diff -NurpP --minimal linux-3.2.22/arch/alpha/include/asm/atomic.h linux-3.2.22-g-v/arch/alpha/include/asm/atomic.h
--- linux-3.2.22/arch/alpha/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/include/asm/atomic.h	2012-07-11 20:20:31.160580195 +0200
@@ -250,6 +250,16 @@ static __inline__ int atomic64_add_unles
 #define atomic_dec(v) atomic_sub(1,(v))
 #define atomic64_dec(v) atomic64_sub(1,(v))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #define smp_mb__before_atomic_dec()	smp_mb()
 #define smp_mb__after_atomic_dec()	smp_mb()
 #define smp_mb__before_atomic_inc()	smp_mb()
diff -NurpP --minimal linux-3.2.22/arch/alpha/include/asm/cache.h linux-3.2.22-g-v/arch/alpha/include/asm/cache.h
--- linux-3.2.22/arch/alpha/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/include/asm/cache.h	2012-07-11 20:20:31.203911378 +0200
@@ -4,19 +4,19 @@
 #ifndef __ARCH_ALPHA_CACHE_H
 #define __ARCH_ALPHA_CACHE_H
 
+#include <linux/const.h>
 
 /* Bytes per L1 (data) cache line. */
 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6)
-# define L1_CACHE_BYTES     64
 # define L1_CACHE_SHIFT     6
 #else
 /* Both EV4 and EV5 are write-through, read-allocate,
    direct-mapped, physical.
 */
-# define L1_CACHE_BYTES     32
 # define L1_CACHE_SHIFT     5
 #endif
 
+#define L1_CACHE_BYTES     (_AC(1,UL) << L1_CACHE_SHIFT)
 #define SMP_CACHE_BYTES    L1_CACHE_BYTES
 
 #endif
diff -NurpP --minimal linux-3.2.22/arch/alpha/include/asm/elf.h linux-3.2.22-g-v/arch/alpha/include/asm/elf.h
--- linux-3.2.22/arch/alpha/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/include/asm/elf.h	2012-07-11 20:20:31.210577225 +0200
@@ -90,6 +90,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N
 
 #define ELF_ET_DYN_BASE		(TASK_UNMAPPED_BASE + 0x1000000)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(current->personality & ADDR_LIMIT_32BIT ? 14 : 28)
+#define PAX_DELTA_STACK_LEN	(current->personality & ADDR_LIMIT_32BIT ? 14 : 19)
+#endif
+
 /* $0 is set by ld.so to a pointer to a function which might be 
    registered using atexit.  This provides a mean for the dynamic
    linker to call DT_FINI functions for shared libraries that have
diff -NurpP --minimal linux-3.2.22/arch/alpha/include/asm/pgalloc.h linux-3.2.22-g-v/arch/alpha/include/asm/pgalloc.h
--- linux-3.2.22/arch/alpha/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/include/asm/pgalloc.h	2012-07-11 20:20:31.270715964 +0200
@@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t
 	pgd_set(pgd, pmd);
 }
 
+static inline void
+pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+	pgd_populate(mm, pgd, pmd);
+}
+
 extern pgd_t *pgd_alloc(struct mm_struct *mm);
 
 static inline void
diff -NurpP --minimal linux-3.2.22/arch/alpha/include/asm/pgtable.h linux-3.2.22-g-v/arch/alpha/include/asm/pgtable.h
--- linux-3.2.22/arch/alpha/include/asm/pgtable.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/include/asm/pgtable.h	2012-07-11 20:20:31.293992186 +0200
@@ -101,6 +101,17 @@ struct vm_area_struct;
 #define PAGE_SHARED	__pgprot(_PAGE_VALID | __ACCESS_BITS)
 #define PAGE_COPY	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
 #define PAGE_READONLY	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE)
+# define PAGE_COPY_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
+# define PAGE_READONLY_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+#endif
+
 #define PAGE_KERNEL	__pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE)
 
 #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x))
diff -NurpP --minimal linux-3.2.22/arch/alpha/Kconfig linux-3.2.22-g-v/arch/alpha/Kconfig
--- linux-3.2.22/arch/alpha/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/Kconfig	2012-07-11 20:20:45.300641187 +0200
@@ -665,6 +665,8 @@ config DUMMY_CONSOLE
 	depends on VGA_HOSE
 	default y
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/entry.S linux-3.2.22-g-v/arch/alpha/kernel/entry.S
--- linux-3.2.22/arch/alpha/kernel/entry.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/entry.S	2012-07-11 20:20:45.303976640 +0200
@@ -860,24 +860,15 @@ sys_getxgid:
 	.globl	sys_getxpid
 	.ent	sys_getxpid
 sys_getxpid:
+	lda	$sp, -16($sp)
+	stq	$26, 0($sp)
 	.prologue 0
-	ldq	$2, TI_TASK($8)
 
-	/* See linux/kernel/timer.c sys_getppid for discussion
-	   about this loop.  */
-	ldq	$3, TASK_GROUP_LEADER($2)
-	ldq	$4, TASK_REAL_PARENT($3)
-	ldl	$0, TASK_TGID($2)
-1:	ldl	$1, TASK_TGID($4)
-#ifdef CONFIG_SMP
-	mov	$4, $5
-	mb
-	ldq	$3, TASK_GROUP_LEADER($2)
-	ldq	$4, TASK_REAL_PARENT($3)
-	cmpeq	$4, $5, $5
-	beq	$5, 1b
-#endif
-	stq	$1, 80($sp)
+	lda	$16, 96($sp)
+	jsr	$26, do_getxpid
+	ldq	$26, 0($sp)
+
+	lda	$sp, 16($sp)
 	ret
 .end sys_getxpid
 
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/module.c linux-3.2.22-g-v/arch/alpha/kernel/module.c
--- linux-3.2.22/arch/alpha/kernel/module.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/module.c	2012-07-11 20:20:31.293992186 +0200
@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, 
 
 	/* The small sections were sorted to the end of the segment.
 	   The following should definitely cover them.  */
-	gp = (u64)me->module_core + me->core_size - 0x8000;
+	gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000;
 	got = sechdrs[me->arch.gotsecindex].sh_addr;
 
 	for (i = 0; i < n; i++) {
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/osf_sys.c linux-3.2.22-g-v/arch/alpha/kernel/osf_sys.c
--- linux-3.2.22/arch/alpha/kernel/osf_sys.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/osf_sys.c	2012-07-11 20:20:31.293992186 +0200
@@ -1147,7 +1147,7 @@ arch_get_unmapped_area_1(unsigned long a
 		/* At this point:  (!vma || addr < vma->vm_end). */
 		if (limit - len < addr)
 			return -ENOMEM;
-		if (!vma || addr + len <= vma->vm_start)
+		if (check_heap_stack_gap(vma, addr, len))
 			return addr;
 		addr = vma->vm_end;
 		vma = vma->vm_next;
@@ -1183,6 +1183,10 @@ arch_get_unmapped_area(struct file *filp
 	   merely specific addresses, but regions of memory -- perhaps
 	   this feature should be incorporated into all ports?  */
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
 		if (addr != (unsigned long) -ENOMEM)
@@ -1190,8 +1194,8 @@ arch_get_unmapped_area(struct file *filp
 	}
 
 	/* Next, try allocating at TASK_UNMAPPED_BASE.  */
-	addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
-					 len, limit);
+	addr = arch_get_unmapped_area_1 (PAGE_ALIGN(current->mm->mmap_base), len, limit);
+
 	if (addr != (unsigned long) -ENOMEM)
 		return addr;
 
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/ptrace.c linux-3.2.22-g-v/arch/alpha/kernel/ptrace.c
--- linux-3.2.22/arch/alpha/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/ptrace.c	2012-07-11 20:20:45.303976640 +0200
@@ -13,6 +13,7 @@
 #include <linux/user.h>
 #include <linux/security.h>
 #include <linux/signal.h>
+#include <linux/vs_base.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/systbls.S linux-3.2.22-g-v/arch/alpha/kernel/systbls.S
--- linux-3.2.22/arch/alpha/kernel/systbls.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/systbls.S	2012-07-11 20:20:45.303976640 +0200
@@ -446,7 +446,7 @@ sys_call_table:
 	.quad sys_stat64			/* 425 */
 	.quad sys_lstat64
 	.quad sys_fstat64
-	.quad sys_ni_syscall			/* sys_vserver */
+	.quad sys_vserver			/* sys_vserver */
 	.quad sys_ni_syscall			/* sys_mbind */
 	.quad sys_ni_syscall			/* sys_get_mempolicy */
 	.quad sys_ni_syscall			/* sys_set_mempolicy */
diff -NurpP --minimal linux-3.2.22/arch/alpha/kernel/traps.c linux-3.2.22-g-v/arch/alpha/kernel/traps.c
--- linux-3.2.22/arch/alpha/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/kernel/traps.c	2012-07-11 20:20:45.303976640 +0200
@@ -183,7 +183,8 @@ die_if_kernel(char * str, struct pt_regs
 #ifdef CONFIG_SMP
 	printk("CPU %d ", hard_smp_processor_id());
 #endif
-	printk("%s(%d): %s %ld\n", current->comm, task_pid_nr(current), str, err);
+	printk("%s(%d[#%u]): %s %ld\n", current->comm,
+		task_pid_nr(current), current->xid, str, err);
 	dik_show_regs(regs, r9_15);
 	add_taint(TAINT_DIE);
 	dik_show_trace((unsigned long *)(regs+1));
diff -NurpP --minimal linux-3.2.22/arch/alpha/mm/fault.c linux-3.2.22-g-v/arch/alpha/mm/fault.c
--- linux-3.2.22/arch/alpha/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/alpha/mm/fault.c	2012-07-11 20:20:31.293992186 +0200
@@ -54,6 +54,124 @@ __load_new_mm_context(struct mm_struct *
 	__reload_thread(pcb);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (regs->pc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int ldah, ldq, jmp;
+
+		err = get_user(ldah, (unsigned int *)regs->pc);
+		err |= get_user(ldq, (unsigned int *)(regs->pc+4));
+		err |= get_user(jmp, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
+		    (ldq & 0xFFFF0000U) == 0xA77B0000U &&
+		    jmp == 0x6BFB0000U)
+		{
+			unsigned long r27, addr;
+			unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
+			unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL;
+
+			addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
+			err = get_user(r27, (unsigned long *)addr);
+			if (err)
+				break;
+
+			regs->r27 = r27;
+			regs->pc = r27;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #2 */
+		unsigned int ldah, lda, br;
+
+		err = get_user(ldah, (unsigned int *)regs->pc);
+		err |= get_user(lda, (unsigned int *)(regs->pc+4));
+		err |= get_user(br, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
+		    (lda & 0xFFFF0000U) == 0xA77B0000U &&
+		    (br & 0xFFE00000U) == 0xC3E00000U)
+		{
+			unsigned long addr = br | 0xFFFFFFFFFFE00000UL;
+			unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
+			unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL;
+
+			regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
+			regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation */
+		unsigned int br;
+
+		err = get_user(br, (unsigned int *)regs->pc);
+
+		if (!err && (br & 0xFFE00000U) == 0xC3800000U) {
+			unsigned int br2, ldq, nop, jmp;
+			unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver;
+
+			addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
+			err = get_user(br2, (unsigned int *)addr);
+			err |= get_user(ldq, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			err |= get_user(jmp, (unsigned int *)(addr+12));
+			err |= get_user(resolver, (unsigned long *)(addr+16));
+
+			if (err)
+				break;
+
+			if (br2 == 0xC3600000U &&
+			    ldq == 0xA77B000CU &&
+			    nop == 0x47FF041FU &&
+			    jmp == 0x6B7B0000U)
+			{
+				regs->r28 = regs->pc+4;
+				regs->r27 = addr+16;
+				regs->pc = resolver;
+				return 3;
+			}
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
 
 /*
  * This routine handles page faults.  It determines the address,
@@ -131,8 +249,29 @@ do_page_fault(unsigned long address, uns
  good_area:
 	si_code = SEGV_ACCERR;
 	if (cause < 0) {
-		if (!(vma->vm_flags & VM_EXEC))
+		if (!(vma->vm_flags & VM_EXEC)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+			if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc)
+				goto bad_area;
+
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 2:
+			case 3:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)regs->pc, (void *)rdusp());
+			do_group_exit(SIGKILL);
+#else
 			goto bad_area;
+#endif
+
+		}
 	} else if (!cause) {
 		/* Allow reads even for write-only mappings */
 		if (!(vma->vm_flags & (VM_READ | VM_WRITE)))
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/atomic.h linux-3.2.22-g-v/arch/arm/include/asm/atomic.h
--- linux-3.2.22/arch/arm/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/atomic.h	2012-07-11 20:20:31.346110845 +0200
@@ -15,6 +15,10 @@
 #include <linux/types.h>
 #include <asm/system.h>
 
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#endif
+
 #define ATOMIC_INIT(i)	{ (i) }
 
 #ifdef __KERNEL__
@@ -25,7 +29,15 @@
  * atomic_set() is the clrex or dummy strex done on every exception return.
  */
 #define atomic_read(v)	(*(volatile int *)&(v)->counter)
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return v->counter;
+}
 #define atomic_set(v,i)	(((v)->counter) = (i))
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
 
 #if __LINUX_ARM_ARCH__ >= 6
 
@@ -40,6 +52,35 @@ static inline void atomic_add(int i, ato
 	int result;
 
 	__asm__ __volatile__("@ atomic_add\n"
+"1:	ldrex	%1, [%3]\n"
+"	adds	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+}
+
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	__asm__ __volatile__("@ atomic_add_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	add	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -58,6 +99,42 @@ static inline int atomic_add_return(int 
 	smp_mb();
 
 	__asm__ __volatile__("@ atomic_add_return\n"
+"1:	ldrex	%1, [%3]\n"
+"	adds	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic_add_return_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	add	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -78,6 +155,35 @@ static inline void atomic_sub(int i, ato
 	int result;
 
 	__asm__ __volatile__("@ atomic_sub\n"
+"1:	ldrex	%1, [%3]\n"
+"	subs	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+}
+
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	__asm__ __volatile__("@ atomic_sub_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	sub	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -96,11 +202,25 @@ static inline int atomic_sub_return(int 
 	smp_mb();
 
 	__asm__ __volatile__("@ atomic_sub_return\n"
-"1:	ldrex	%0, [%3]\n"
-"	sub	%0, %0, %4\n"
+"1:	ldrex	%1, [%3]\n"
+"	sub	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strex	%1, %0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "Ir" (i)
 	: "cc");
@@ -132,6 +252,28 @@ static inline int atomic_cmpxchg(atomic_
 	return oldval;
 }
 
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new)
+{
+	unsigned long oldval, res;
+
+	smp_mb();
+
+	do {
+		__asm__ __volatile__("@ atomic_cmpxchg_unchecked\n"
+		"ldrex	%1, [%3]\n"
+		"mov	%0, #0\n"
+		"teq	%1, %4\n"
+		"strexeq %0, %5, [%3]\n"
+		    : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
+		    : "r" (&ptr->counter), "Ir" (old), "r" (new)
+		    : "cc");
+	} while (res);
+
+	smp_mb();
+
+	return oldval;
+}
+
 static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 {
 	unsigned long tmp, tmp2;
@@ -165,7 +307,17 @@ static inline int atomic_add_return(int 
 
 	return val;
 }
+
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	return atomic_add_return(i, v);
+}
+
 #define atomic_add(i, v)	(void) atomic_add_return(i, v)
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	(void) atomic_add_return(i, v);
+}
 
 static inline int atomic_sub_return(int i, atomic_t *v)
 {
@@ -180,6 +332,10 @@ static inline int atomic_sub_return(int 
 	return val;
 }
 #define atomic_sub(i, v)	(void) atomic_sub_return(i, v)
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	(void) atomic_sub_return(i, v);
+}
 
 static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 {
@@ -195,6 +351,11 @@ static inline int atomic_cmpxchg(atomic_
 	return ret;
 }
 
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
+{
+	return atomic_cmpxchg(v, old, new);
+}
+
 static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 {
 	unsigned long flags;
@@ -207,6 +368,10 @@ static inline void atomic_clear_mask(uns
 #endif /* __LINUX_ARM_ARCH__ */
 
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
 
 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
@@ -219,11 +384,27 @@ static inline int __atomic_add_unless(at
 }
 
 #define atomic_inc(v)		atomic_add(1, v)
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	atomic_add_unchecked(1, v);
+}
 #define atomic_dec(v)		atomic_sub(1, v)
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	atomic_sub_unchecked(1, v);
+}
 
 #define atomic_inc_and_test(v)	(atomic_add_return(1, v) == 0)
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v) == 0;
+}
 #define atomic_dec_and_test(v)	(atomic_sub_return(1, v) == 0)
 #define atomic_inc_return(v)    (atomic_add_return(1, v))
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v);
+}
 #define atomic_dec_return(v)    (atomic_sub_return(1, v))
 #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0)
 
@@ -239,6 +420,14 @@ typedef struct {
 	u64 __aligned(8) counter;
 } atomic64_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	u64 __aligned(8) counter;
+} atomic64_unchecked_t;
+#else
+typedef atomic64_t atomic64_unchecked_t;
+#endif
+
 #define ATOMIC64_INIT(i) { (i) }
 
 static inline u64 atomic64_read(atomic64_t *v)
@@ -254,6 +443,19 @@ static inline u64 atomic64_read(atomic64
 	return result;
 }
 
+static inline u64 atomic64_read_unchecked(atomic64_unchecked_t *v)
+{
+	u64 result;
+
+	__asm__ __volatile__("@ atomic64_read_unchecked\n"
+"	ldrexd	%0, %H0, [%1]"
+	: "=&r" (result)
+	: "r" (&v->counter), "Qo" (v->counter)
+	);
+
+	return result;
+}
+
 static inline void atomic64_set(atomic64_t *v, u64 i)
 {
 	u64 tmp;
@@ -268,6 +470,20 @@ static inline void atomic64_set(atomic64
 	: "cc");
 }
 
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, u64 i)
+{
+	u64 tmp;
+
+	__asm__ __volatile__("@ atomic64_set_unchecked\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	strexd	%0, %3, %H3, [%2]\n"
+"	teq	%0, #0\n"
+"	bne	1b"
+	: "=&r" (tmp), "=Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
 static inline void atomic64_add(u64 i, atomic64_t *v)
 {
 	u64 result;
@@ -276,6 +492,36 @@ static inline void atomic64_add(u64 i, a
 	__asm__ __volatile__("@ atomic64_add\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	adds	%0, %0, %4\n"
+"	adcs	%H0, %H0, %H4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline void atomic64_add_unchecked(u64 i, atomic64_unchecked_t *v)
+{
+	u64 result;
+	unsigned long tmp;
+
+	__asm__ __volatile__("@ atomic64_add_unchecked\n"
+"1:	ldrexd	%0, %H0, [%3]\n"
+"	adds	%0, %0, %4\n"
 "	adc	%H0, %H0, %H4\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
@@ -287,12 +533,49 @@ static inline void atomic64_add(u64 i, a
 
 static inline u64 atomic64_add_return(u64 i, atomic64_t *v)
 {
+	u64 result, tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_add_return\n"
+"1:	ldrexd	%1, %H1, [%3]\n"
+"	adds	%0, %1, %4\n"
+"	adcs	%H0, %H1, %H4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"	mov	%H0, %H1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline u64 atomic64_add_return_unchecked(u64 i, atomic64_unchecked_t *v)
+{
 	u64 result;
 	unsigned long tmp;
 
 	smp_mb();
 
-	__asm__ __volatile__("@ atomic64_add_return\n"
+	__asm__ __volatile__("@ atomic64_add_return_unchecked\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	adds	%0, %0, %4\n"
 "	adc	%H0, %H0, %H4\n"
@@ -316,23 +599,34 @@ static inline void atomic64_sub(u64 i, a
 	__asm__ __volatile__("@ atomic64_sub\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	subs	%0, %0, %4\n"
-"	sbc	%H0, %H0, %H4\n"
+"	sbcs	%H0, %H0, %H4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (i)
 	: "cc");
 }
 
-static inline u64 atomic64_sub_return(u64 i, atomic64_t *v)
+static inline void atomic64_sub_unchecked(u64 i, atomic64_unchecked_t *v)
 {
 	u64 result;
 	unsigned long tmp;
 
-	smp_mb();
-
-	__asm__ __volatile__("@ atomic64_sub_return\n"
+	__asm__ __volatile__("@ atomic64_sub_unchecked\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	subs	%0, %0, %4\n"
 "	sbc	%H0, %H0, %H4\n"
@@ -342,6 +636,39 @@ static inline u64 atomic64_sub_return(u6
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (i)
 	: "cc");
+}
+
+static inline u64 atomic64_sub_return(u64 i, atomic64_t *v)
+{
+	u64 result, tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_sub_return\n"
+"1:	ldrexd	%1, %H1, [%3]\n"
+"	subs	%0, %1, %4\n"
+"	sbc	%H0, %H1, %H4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"	mov	%H0, %H1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
 
 	smp_mb();
 
@@ -372,6 +699,30 @@ static inline u64 atomic64_cmpxchg(atomi
 	return oldval;
 }
 
+static inline u64 atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, u64 old, u64 new)
+{
+	u64 oldval;
+	unsigned long res;
+
+	smp_mb();
+
+	do {
+		__asm__ __volatile__("@ atomic64_cmpxchg_unchecked\n"
+		"ldrexd		%1, %H1, [%3]\n"
+		"mov		%0, #0\n"
+		"teq		%1, %4\n"
+		"teqeq		%H1, %H4\n"
+		"strexdeq	%0, %5, %H5, [%3]"
+		: "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
+		: "r" (&ptr->counter), "r" (old), "r" (new)
+		: "cc");
+	} while (res);
+
+	smp_mb();
+
+	return oldval;
+}
+
 static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new)
 {
 	u64 result;
@@ -395,21 +746,34 @@ static inline u64 atomic64_xchg(atomic64
 
 static inline u64 atomic64_dec_if_positive(atomic64_t *v)
 {
-	u64 result;
-	unsigned long tmp;
+	u64 result, tmp;
 
 	smp_mb();
 
 	__asm__ __volatile__("@ atomic64_dec_if_positive\n"
-"1:	ldrexd	%0, %H0, [%3]\n"
-"	subs	%0, %0, #1\n"
-"	sbc	%H0, %H0, #0\n"
+"1:	ldrexd	%1, %H1, [%3]\n"
+"	subs	%0, %1, #1\n"
+"	sbc	%H0, %H1, #0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"	mov	%H0, %H1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	teq	%H0, #0\n"
-"	bmi	2f\n"
+"	bmi	4f\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b\n"
-"2:"
+"4:\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter)
 	: "cc");
@@ -432,13 +796,25 @@ static inline int atomic64_add_unless(at
 "	teq	%0, %5\n"
 "	teqeq	%H0, %H5\n"
 "	moveq	%1, #0\n"
-"	beq	2f\n"
+"	beq	4f\n"
 "	adds	%0, %0, %6\n"
 "	adc	%H0, %H0, %H6\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strexd	%2, %0, %H0, [%4]\n"
 "	teq	%2, #0\n"
 "	bne	1b\n"
-"2:"
+"4:\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (val), "+r" (ret), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (u), "r" (a)
 	: "cc");
@@ -451,10 +827,13 @@ static inline int atomic64_add_unless(at
 
 #define atomic64_add_negative(a, v)	(atomic64_add_return((a), (v)) < 0)
 #define atomic64_inc(v)			atomic64_add(1LL, (v))
+#define atomic64_inc_unchecked(v)	atomic64_add_unchecked(1LL, (v))
 #define atomic64_inc_return(v)		atomic64_add_return(1LL, (v))
+#define atomic64_inc_return_unchecked(v)	atomic64_add_return_unchecked(1LL, (v))
 #define atomic64_inc_and_test(v)	(atomic64_inc_return(v) == 0)
 #define atomic64_sub_and_test(a, v)	(atomic64_sub_return((a), (v)) == 0)
 #define atomic64_dec(v)			atomic64_sub(1LL, (v))
+#define atomic64_dec_unchecked(v)	atomic64_sub_unchecked(1LL, (v))
 #define atomic64_dec_return(v)		atomic64_sub_return(1LL, (v))
 #define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1LL, 0LL)
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/cacheflush.h linux-3.2.22-g-v/arch/arm/include/asm/cacheflush.h
--- linux-3.2.22/arch/arm/include/asm/cacheflush.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/cacheflush.h	2012-07-11 20:20:31.407451136 +0200
@@ -108,7 +108,7 @@ struct cpu_cache_fns {
 	void (*dma_unmap_area)(const void *, size_t, int);
 
 	void (*dma_flush_range)(const void *, const void *);
-};
+} __no_const;
 
 /*
  * Select the calling method
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/cache.h linux-3.2.22-g-v/arch/arm/include/asm/cache.h
--- linux-3.2.22/arch/arm/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/cache.h	2012-07-11 20:20:31.385296324 +0200
@@ -4,8 +4,10 @@
 #ifndef __ASMARM_CACHE_H
 #define __ASMARM_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT		CONFIG_ARM_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/elf.h linux-3.2.22-g-v/arch/arm/include/asm/elf.h
--- linux-3.2.22/arch/arm/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/elf.h	2012-07-11 20:20:31.457507767 +0200
@@ -116,7 +116,14 @@ int dump_task_regs(struct task_struct *t
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x00008000UL
+
+#define PAX_DELTA_MMAP_LEN	((current->personality == PER_LINUX_32BIT) ? 16 : 10)
+#define PAX_DELTA_STACK_LEN	((current->personality == PER_LINUX_32BIT) ? 16 : 10)
+#endif
 
 /* When the program starts, a1 contains a pointer to a function to be 
    registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
@@ -126,10 +133,6 @@ int dump_task_regs(struct task_struct *t
 extern void elf_set_personality(const struct elf32_hdr *);
 #define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
 
-struct mm_struct;
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 extern int vectors_user_mapping(void);
 #define arch_setup_additional_pages(bprm, uses_interp) vectors_user_mapping()
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/kmap_types.h linux-3.2.22-g-v/arch/arm/include/asm/kmap_types.h
--- linux-3.2.22/arch/arm/include/asm/kmap_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/kmap_types.h	2012-07-11 20:20:31.494117735 +0200
@@ -21,6 +21,7 @@ enum km_type {
 	KM_L1_CACHE,
 	KM_L2_CACHE,
 	KM_KDB,
+	KM_CLEARPAGE,
 	KM_TYPE_NR
 };
 
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/outercache.h linux-3.2.22-g-v/arch/arm/include/asm/outercache.h
--- linux-3.2.22/arch/arm/include/asm/outercache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/outercache.h	2012-07-11 20:20:31.494117735 +0200
@@ -35,7 +35,7 @@ struct outer_cache_fns {
 #endif
 	void (*set_debug)(unsigned long);
 	void (*resume)(void);
-};
+} __no_const;
 
 #ifdef CONFIG_OUTER_CACHE
 
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/page.h linux-3.2.22-g-v/arch/arm/include/asm/page.h
--- linux-3.2.22/arch/arm/include/asm/page.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/page.h	2012-07-11 20:20:31.530589530 +0200
@@ -123,7 +123,7 @@ struct cpu_user_fns {
 	void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
 	void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
 			unsigned long vaddr, struct vm_area_struct *vma);
-};
+} __no_const;
 
 #ifdef MULTI_USER
 extern struct cpu_user_fns cpu_user;
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/pgalloc.h linux-3.2.22-g-v/arch/arm/include/asm/pgalloc.h
--- linux-3.2.22/arch/arm/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/pgalloc.h	2012-07-11 20:20:31.643964669 +0200
@@ -31,6 +31,7 @@
 #define pmd_alloc_one(mm,addr)		({ BUG(); ((pmd_t *)2); })
 #define pmd_free(mm, pmd)		do { } while (0)
 #define pgd_populate(mm,pmd,pte)	BUG()
+#define pgd_populate_kernel(mm,pmd,pte)	BUG()
 
 extern pgd_t *pgd_alloc(struct mm_struct *mm);
 extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/system.h linux-3.2.22-g-v/arch/arm/include/asm/system.h
--- linux-3.2.22/arch/arm/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/system.h	2012-07-11 20:20:31.667513740 +0200
@@ -90,6 +90,8 @@ void hook_ifault_code(int nr, int (*fn)(
 
 #define xchg(ptr,x) \
 	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define xchg_unchecked(ptr,x) \
+	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 
 extern asmlinkage void c_backtrace(unsigned long fp, int pmode);
 
@@ -101,7 +103,7 @@ extern int __pure cpu_architecture(void)
 extern void cpu_init(void);
 
 void arm_machine_restart(char mode, const char *cmd);
-extern void (*arm_pm_restart)(char str, const char *cmd);
+extern void (*arm_pm_restart)(char str, const char *cmd) __noreturn;
 
 #define UDBG_UNDEFINED	(1 << 0)
 #define UDBG_SYSCALL	(1 << 1)
@@ -526,6 +528,13 @@ static inline unsigned long long __cmpxc
 
 #endif	/* __LINUX_ARM_ARCH__ >= 6 */
 
+#define _ASM_EXTABLE(from, to)		\
+"	.pushsection __ex_table,\"a\"\n"\
+"	.align	3\n"			\
+"	.long	" #from ", " #to"\n"	\
+"	.popsection"
+
+
 #endif /* __ASSEMBLY__ */
 
 #define arch_align_stack(x) (x)
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/thread_info.h linux-3.2.22-g-v/arch/arm/include/asm/thread_info.h
--- linux-3.2.22/arch/arm/include/asm/thread_info.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/thread_info.h	2012-07-11 20:20:31.711045991 +0200
@@ -139,6 +139,12 @@ extern void vfp_flush_hwstate(struct thr
 #define TIF_NEED_RESCHED	1
 #define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
 #define TIF_SYSCALL_TRACE	8
+
+/* within 8 bits of TIF_SYSCALL_TRACE
+   to meet flexible second operand requirements
+*/
+#define TIF_GRSEC_SETXID	9
+
 #define TIF_POLLING_NRFLAG	16
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
@@ -155,6 +161,10 @@ extern void vfp_flush_hwstate(struct thr
 #define _TIF_FREEZE		(1 << TIF_FREEZE)
 #define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
+#define _TIF_GRSEC_SETXID	(1 << TIF_GRSEC_SETXID)
+
+/* Checks for any syscall work in entry-common.S */
+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_GRSEC_SETXID)
 
 /*
  * Change these and you break ASM code in entry-common.S
diff -NurpP --minimal linux-3.2.22/arch/arm/include/asm/uaccess.h linux-3.2.22-g-v/arch/arm/include/asm/uaccess.h
--- linux-3.2.22/arch/arm/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/include/asm/uaccess.h	2012-07-11 20:20:31.714184985 +0200
@@ -22,6 +22,8 @@
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1
 
+extern void check_object_size(const void *ptr, unsigned long n, bool to);
+
 /*
  * The exception table consists of pairs of addresses: the first is the
  * address of an instruction that is allowed to fault, and the second is
@@ -387,8 +389,23 @@ do {									\
 
 
 #ifdef CONFIG_MMU
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n);
+
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
+	return ___copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
+	return ___copy_to_user(to, from, n);
+}
+
 extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n);
 extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
 extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n);
@@ -403,6 +420,9 @@ extern unsigned long __must_check __strn
 
 static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (access_ok(VERIFY_READ, from, n))
 		n = __copy_from_user(to, from, n);
 	else /* security hole - plug it */
@@ -412,6 +432,9 @@ static inline unsigned long __must_check
 
 static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (access_ok(VERIFY_WRITE, to, n))
 		n = __copy_to_user(to, from, n);
 	return n;
diff -NurpP --minimal linux-3.2.22/arch/arm/Kconfig linux-3.2.22-g-v/arch/arm/Kconfig
--- linux-3.2.22/arch/arm/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/Kconfig	2012-07-11 20:20:45.307449635 +0200
@@ -2251,6 +2251,8 @@ source "fs/Kconfig"
 
 source "arch/arm/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/armksyms.c linux-3.2.22-g-v/arch/arm/kernel/armksyms.c
--- linux-3.2.22/arch/arm/kernel/armksyms.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/armksyms.c	2012-07-11 20:20:31.767306888 +0200
@@ -95,8 +95,8 @@ EXPORT_SYMBOL(__strncpy_from_user);
 #ifdef CONFIG_MMU
 EXPORT_SYMBOL(copy_page);
 
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(___copy_from_user);
+EXPORT_SYMBOL(___copy_to_user);
 EXPORT_SYMBOL(__clear_user);
 
 EXPORT_SYMBOL(__get_user_1);
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/calls.S linux-3.2.22-g-v/arch/arm/kernel/calls.S
--- linux-3.2.22/arch/arm/kernel/calls.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/calls.S	2012-07-11 20:20:45.307449635 +0200
@@ -322,7 +322,7 @@
 /* 310 */	CALL(sys_request_key)
 		CALL(sys_keyctl)
 		CALL(ABI(sys_semtimedop, sys_oabi_semtimedop))
-/* vserver */	CALL(sys_ni_syscall)
+		CALL(sys_vserver)
 		CALL(sys_ioprio_set)
 /* 315 */	CALL(sys_ioprio_get)
 		CALL(sys_inotify_init)
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/entry-common.S linux-3.2.22-g-v/arch/arm/kernel/entry-common.S
--- linux-3.2.22/arch/arm/kernel/entry-common.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/entry-common.S	2012-07-11 20:20:31.784176855 +0200
@@ -87,7 +87,7 @@ ENTRY(ret_from_fork)
 	get_thread_info tsk
 	ldr	r1, [tsk, #TI_FLAGS]		@ check for syscall tracing
 	mov	why, #1
-	tst	r1, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	tst	r1, #_TIF_SYSCALL_WORK		@ are we tracing syscalls?
 	beq	ret_slow_syscall
 	mov	r1, sp
 	mov	r0, #1				@ trace exit [IP = 1]
@@ -443,7 +443,7 @@ ENTRY(vector_swi)
 1:
 #endif
 
-	tst	r10, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	tst	r10, #_TIF_SYSCALL_WORK		@ are we tracing syscalls?
 	bne	__sys_trace
 
 	cmp	scno, #NR_syscalls		@ check upper syscall limit
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/process.c linux-3.2.22-g-v/arch/arm/kernel/process.c
--- linux-3.2.22/arch/arm/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/process.c	2012-07-11 20:20:45.307449635 +0200
@@ -28,7 +28,6 @@
 #include <linux/tick.h>
 #include <linux/utsname.h>
 #include <linux/uaccess.h>
-#include <linux/random.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/cpuidle.h>
 
@@ -92,7 +91,7 @@ static int __init hlt_setup(char *__unus
 __setup("nohlt", nohlt_setup);
 __setup("hlt", hlt_setup);
 
-void arm_machine_restart(char mode, const char *cmd)
+__noreturn void arm_machine_restart(char mode, const char *cmd)
 {
 	/* Disable interrupts first */
 	local_irq_disable();
@@ -134,7 +133,7 @@ void arm_machine_restart(char mode, cons
 void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
 
-void (*arm_pm_restart)(char str, const char *cmd) = arm_machine_restart;
+void (*arm_pm_restart)(char str, const char *cmd) __noreturn = arm_machine_restart;
 EXPORT_SYMBOL_GPL(arm_pm_restart);
 
 static void do_nothing(void *unused)
@@ -248,6 +247,7 @@ void machine_power_off(void)
 	machine_shutdown();
 	if (pm_power_off)
 		pm_power_off();
+	BUG();
 }
 
 void machine_restart(char *cmd)
@@ -320,7 +320,8 @@ void __show_regs(struct pt_regs *regs)
 void show_regs(struct pt_regs * regs)
 {
 	printk("\n");
-	printk("Pid: %d, comm: %20s\n", task_pid_nr(current), current->comm);
+	printk("Pid: %d[#%u], comm: %20s\n",
+		task_pid_nr(current), current->xid, current->comm);
 	__show_regs(regs);
 	dump_stack();
 }
@@ -484,12 +485,6 @@ unsigned long get_wchan(struct task_stru
 	return 0;
 }
 
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long range_end = mm->brk + 0x02000000;
-	return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
-}
-
 #ifdef CONFIG_MMU
 /*
  * The vectors page is always readable from user space for the
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/ptrace.c linux-3.2.22-g-v/arch/arm/kernel/ptrace.c
--- linux-3.2.22/arch/arm/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/ptrace.c	2012-07-11 20:20:31.787451006 +0200
@@ -904,10 +904,19 @@ long arch_ptrace(struct task_struct *chi
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
 {
 	unsigned long ip;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (!test_thread_flag(TIF_SYSCALL_TRACE))
 		return scno;
 	if (!(current->ptrace & PT_PTRACED))
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/setup.c linux-3.2.22-g-v/arch/arm/kernel/setup.c
--- linux-3.2.22/arch/arm/kernel/setup.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/setup.c	2012-07-11 20:20:31.787451006 +0200
@@ -108,13 +108,13 @@ struct processor processor __read_mostly
 struct cpu_tlb_fns cpu_tlb __read_mostly;
 #endif
 #ifdef MULTI_USER
-struct cpu_user_fns cpu_user __read_mostly;
+struct cpu_user_fns cpu_user __read_only;
 #endif
 #ifdef MULTI_CACHE
-struct cpu_cache_fns cpu_cache __read_mostly;
+struct cpu_cache_fns cpu_cache __read_only;
 #endif
 #ifdef CONFIG_OUTER_CACHE
-struct outer_cache_fns outer_cache __read_mostly;
+struct outer_cache_fns outer_cache __read_only;
 EXPORT_SYMBOL(outer_cache);
 #endif
 
diff -NurpP --minimal linux-3.2.22/arch/arm/kernel/traps.c linux-3.2.22-g-v/arch/arm/kernel/traps.c
--- linux-3.2.22/arch/arm/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/kernel/traps.c	2012-07-11 20:20:45.307449635 +0200
@@ -244,8 +244,8 @@ static int __die(const char *str, int er
 
 	print_modules();
 	__show_regs(regs);
-	printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
-		TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), thread + 1);
+	printk(KERN_EMERG "Process %.*s (pid: %d:#%u, stack limit = 0x%p)\n",
+		TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), tsk->xid, thread + 1);
 
 	if (!user_mode(regs) || in_interrupt()) {
 		dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,
@@ -259,6 +259,8 @@ static int __die(const char *str, int er
 
 static DEFINE_RAW_SPINLOCK(die_lock);
 
+extern void gr_handle_kernel_exploit(void);
+
 /*
  * This function is protected against re-entrancy.
  */
@@ -288,6 +290,9 @@ void die(const char *str, struct pt_regs
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
+
+	gr_handle_kernel_exploit();
+
 	if (ret != NOTIFY_STOP)
 		do_exit(SIGSEGV);
 }
diff -NurpP --minimal linux-3.2.22/arch/arm/lib/copy_from_user.S linux-3.2.22-g-v/arch/arm/lib/copy_from_user.S
--- linux-3.2.22/arch/arm/lib/copy_from_user.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/lib/copy_from_user.S	2012-07-11 20:20:31.787451006 +0200
@@ -16,7 +16,7 @@
 /*
  * Prototype:
  *
- *	size_t __copy_from_user(void *to, const void *from, size_t n)
+ *	size_t ___copy_from_user(void *to, const void *from, size_t n)
  *
  * Purpose:
  *
@@ -84,11 +84,11 @@
 
 	.text
 
-ENTRY(__copy_from_user)
+ENTRY(___copy_from_user)
 
 #include "copy_template.S"
 
-ENDPROC(__copy_from_user)
+ENDPROC(___copy_from_user)
 
 	.pushsection .fixup,"ax"
 	.align 0
diff -NurpP --minimal linux-3.2.22/arch/arm/lib/copy_page.S linux-3.2.22-g-v/arch/arm/lib/copy_page.S
--- linux-3.2.22/arch/arm/lib/copy_page.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/lib/copy_page.S	2012-07-11 20:20:31.787451006 +0200
@@ -10,6 +10,7 @@
  *  ASM optimised string functions
  */
 #include <linux/linkage.h>
+#include <linux/const.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/cache.h>
diff -NurpP --minimal linux-3.2.22/arch/arm/lib/copy_to_user.S linux-3.2.22-g-v/arch/arm/lib/copy_to_user.S
--- linux-3.2.22/arch/arm/lib/copy_to_user.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/lib/copy_to_user.S	2012-07-11 20:20:31.787451006 +0200
@@ -16,7 +16,7 @@
 /*
  * Prototype:
  *
- *	size_t __copy_to_user(void *to, const void *from, size_t n)
+ *	size_t ___copy_to_user(void *to, const void *from, size_t n)
  *
  * Purpose:
  *
@@ -88,11 +88,11 @@
 	.text
 
 ENTRY(__copy_to_user_std)
-WEAK(__copy_to_user)
+WEAK(___copy_to_user)
 
 #include "copy_template.S"
 
-ENDPROC(__copy_to_user)
+ENDPROC(___copy_to_user)
 ENDPROC(__copy_to_user_std)
 
 	.pushsection .fixup,"ax"
diff -NurpP --minimal linux-3.2.22/arch/arm/lib/uaccess.S linux-3.2.22-g-v/arch/arm/lib/uaccess.S
--- linux-3.2.22/arch/arm/lib/uaccess.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/lib/uaccess.S	2012-07-11 20:20:31.790784150 +0200
@@ -20,7 +20,7 @@
 
 #define PAGE_SHIFT 12
 
-/* Prototype: int __copy_to_user(void *to, const char *from, size_t n)
+/* Prototype: int ___copy_to_user(void *to, const char *from, size_t n)
  * Purpose  : copy a block to user memory from kernel memory
  * Params   : to   - user memory
  *          : from - kernel memory
@@ -40,7 +40,7 @@ USER(		T(strgtb) r3, [r0], #1)			@ May f
 		sub	r2, r2, ip
 		b	.Lc2u_dest_aligned
 
-ENTRY(__copy_to_user)
+ENTRY(___copy_to_user)
 		stmfd	sp!, {r2, r4 - r7, lr}
 		cmp	r2, #4
 		blt	.Lc2u_not_enough
@@ -278,14 +278,14 @@ USER(		T(strgeb) r3, [r0], #1)			@ May f
 		ldrgtb	r3, [r1], #0
 USER(		T(strgtb) r3, [r0], #1)			@ May fault
 		b	.Lc2u_finished
-ENDPROC(__copy_to_user)
+ENDPROC(___copy_to_user)
 
 		.pushsection .fixup,"ax"
 		.align	0
 9001:		ldmfd	sp!, {r0, r4 - r7, pc}
 		.popsection
 
-/* Prototype: unsigned long __copy_from_user(void *to,const void *from,unsigned long n);
+/* Prototype: unsigned long ___copy_from_user(void *to,const void *from,unsigned long n);
  * Purpose  : copy a block from user memory to kernel memory
  * Params   : to   - kernel memory
  *          : from - user memory
@@ -304,7 +304,7 @@ USER(		T(ldrgtb) r3, [r1], #1)			@ May f
 		sub	r2, r2, ip
 		b	.Lcfu_dest_aligned
 
-ENTRY(__copy_from_user)
+ENTRY(___copy_from_user)
 		stmfd	sp!, {r0, r2, r4 - r7, lr}
 		cmp	r2, #4
 		blt	.Lcfu_not_enough
@@ -544,7 +544,7 @@ USER(		T(ldrgeb) r3, [r1], #1)			@ May f
 USER(		T(ldrgtb) r3, [r1], #1)			@ May fault
 		strgtb	r3, [r0], #1
 		b	.Lcfu_finished
-ENDPROC(__copy_from_user)
+ENDPROC(___copy_from_user)
 
 		.pushsection .fixup,"ax"
 		.align	0
diff -NurpP --minimal linux-3.2.22/arch/arm/lib/uaccess_with_memcpy.c linux-3.2.22-g-v/arch/arm/lib/uaccess_with_memcpy.c
--- linux-3.2.22/arch/arm/lib/uaccess_with_memcpy.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/lib/uaccess_with_memcpy.c	2012-07-11 20:20:31.790784150 +0200
@@ -104,7 +104,7 @@ out:
 }
 
 unsigned long
-__copy_to_user(void __user *to, const void *from, unsigned long n)
+___copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	/*
 	 * This test is stubbed out of the main function above to keep
diff -NurpP --minimal linux-3.2.22/arch/arm/mach-omap2/board-n8x0.c linux-3.2.22-g-v/arch/arm/mach-omap2/board-n8x0.c
--- linux-3.2.22/arch/arm/mach-omap2/board-n8x0.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/mach-omap2/board-n8x0.c	2012-07-11 20:20:31.790784150 +0200
@@ -593,7 +593,7 @@ static int n8x0_menelaus_late_init(struc
 }
 #endif
 
-static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
+static struct menelaus_platform_data n8x0_menelaus_platform_data __initconst = {
 	.late_init = n8x0_menelaus_late_init,
 };
 
diff -NurpP --minimal linux-3.2.22/arch/arm/mach-ux500/mbox-db5500.c linux-3.2.22-g-v/arch/arm/mach-ux500/mbox-db5500.c
--- linux-3.2.22/arch/arm/mach-ux500/mbox-db5500.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/mach-ux500/mbox-db5500.c	2012-07-11 20:20:31.790784150 +0200
@@ -168,7 +168,7 @@ static ssize_t mbox_read_fifo(struct dev
 	return sprintf(buf, "0x%X\n", mbox_value);
 }
 
-static DEVICE_ATTR(fifo, S_IWUGO | S_IRUGO, mbox_read_fifo, mbox_write_fifo);
+static DEVICE_ATTR(fifo, S_IWUSR | S_IRUGO, mbox_read_fifo, mbox_write_fifo);
 
 static int mbox_show(struct seq_file *s, void *data)
 {
diff -NurpP --minimal linux-3.2.22/arch/arm/mm/fault.c linux-3.2.22-g-v/arch/arm/mm/fault.c
--- linux-3.2.22/arch/arm/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/mm/fault.c	2012-07-11 20:20:31.790784150 +0200
@@ -183,6 +183,13 @@ __do_user_fault(struct task_struct *tsk,
 	}
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (fsr & FSR_LNX_PF) {
+		pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp);
+		do_group_exit(SIGKILL);
+	}
+#endif
+
 	tsk->thread.address = addr;
 	tsk->thread.error_code = fsr;
 	tsk->thread.trap_no = 14;
@@ -386,6 +393,33 @@ do_page_fault(unsigned long addr, unsign
 }
 #endif					/* CONFIG_MMU */
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (__force unsigned char __user *)pc+i))
+			printk(KERN_CONT "?? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+
+	printk(KERN_ERR "PAX: bytes at SP-4: ");
+	for (i = -1; i < 20; i++) {
+		unsigned long c;
+		if (get_user(c, (__force unsigned long __user *)sp+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08lx ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * First Level Translation Fault Handler
  *
@@ -630,6 +664,20 @@ do_PrefetchAbort(unsigned long addr, uns
 	const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr);
 	struct siginfo info;
 
+#ifdef CONFIG_PAX_REFCOUNT
+	if (fsr_fs(ifsr) == 2) {
+		unsigned int bkpt;
+
+		if (!probe_kernel_address((unsigned int *)addr, bkpt) && bkpt == 0xe12f1073) {
+			current->thread.error_code = ifsr;
+			current->thread.trap_no = 0;
+			pax_report_refcount_overflow(regs);
+			fixup_exception(regs);
+			return;
+		}
+	}
+#endif
+
 	if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
 		return;
 
diff -NurpP --minimal linux-3.2.22/arch/arm/mm/mmap.c linux-3.2.22-g-v/arch/arm/mm/mmap.c
--- linux-3.2.22/arch/arm/mm/mmap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/mm/mmap.c	2012-07-11 20:20:31.840843335 +0200
@@ -54,6 +54,10 @@ arch_get_unmapped_area(struct file *filp
 	if (len > TASK_SIZE)
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -61,15 +65,14 @@ arch_get_unmapped_area(struct file *filp
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 	if (len > mm->cached_hole_size) {
-	        start_addr = addr = mm->free_area_cache;
+		start_addr = addr = mm->free_area_cache;
 	} else {
-	        start_addr = addr = TASK_UNMAPPED_BASE;
-	        mm->cached_hole_size = 0;
+		start_addr = addr = mm->mmap_base;
+		mm->cached_hole_size = 0;
 	}
 	/* 8 bits of randomness in 20 address space bits */
 	if ((current->flags & PF_RANDOMIZE) &&
@@ -89,14 +92,14 @@ full_search:
 			 * Start a new search - just in case we missed
 			 * some holes.
 			 */
-			if (start_addr != TASK_UNMAPPED_BASE) {
-				start_addr = addr = TASK_UNMAPPED_BASE;
+			if (start_addr != mm->mmap_base) {
+				start_addr = addr = mm->mmap_base;
 				mm->cached_hole_size = 0;
 				goto full_search;
 			}
 			return -ENOMEM;
 		}
-		if (!vma || addr + len <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
diff -NurpP --minimal linux-3.2.22/arch/arm/plat-samsung/include/plat/dma-ops.h linux-3.2.22-g-v/arch/arm/plat-samsung/include/plat/dma-ops.h
--- linux-3.2.22/arch/arm/plat-samsung/include/plat/dma-ops.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/plat-samsung/include/plat/dma-ops.h	2012-07-11 20:20:31.840843335 +0200
@@ -41,7 +41,7 @@ struct samsung_dma_ops {
 	int (*started)(unsigned ch);
 	int (*flush)(unsigned ch);
 	int (*stop)(unsigned ch);
-};
+} __no_const;
 
 extern void *samsung_dmadev_get_ops(void);
 extern void *s3c_dma_get_ops(void);
diff -NurpP --minimal linux-3.2.22/arch/arm/plat-samsung/include/plat/ehci.h linux-3.2.22-g-v/arch/arm/plat-samsung/include/plat/ehci.h
--- linux-3.2.22/arch/arm/plat-samsung/include/plat/ehci.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/arm/plat-samsung/include/plat/ehci.h	2012-07-11 20:20:31.840843335 +0200
@@ -14,7 +14,7 @@
 struct s5p_ehci_platdata {
 	int (*phy_init)(struct platform_device *pdev, int type);
 	int (*phy_exit)(struct platform_device *pdev, int type);
-};
+} __no_const;
 
 extern void s5p_ehci_set_platdata(struct s5p_ehci_platdata *pd);
 
diff -NurpP --minimal linux-3.2.22/arch/avr32/include/asm/cache.h linux-3.2.22-g-v/arch/avr32/include/asm/cache.h
--- linux-3.2.22/arch/avr32/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/avr32/include/asm/cache.h	2012-07-11 20:20:31.840843335 +0200
@@ -1,8 +1,10 @@
 #ifndef __ASM_AVR32_CACHE_H
 #define __ASM_AVR32_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT 5
-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
diff -NurpP --minimal linux-3.2.22/arch/avr32/include/asm/elf.h linux-3.2.22-g-v/arch/avr32/include/asm/elf.h
--- linux-3.2.22/arch/avr32/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/avr32/include/asm/elf.h	2012-07-11 20:20:31.840843335 +0200
@@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpreg
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x00001000UL
 
+#define PAX_DELTA_MMAP_LEN	15
+#define PAX_DELTA_STACK_LEN	15
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
diff -NurpP --minimal linux-3.2.22/arch/avr32/include/asm/kmap_types.h linux-3.2.22-g-v/arch/avr32/include/asm/kmap_types.h
--- linux-3.2.22/arch/avr32/include/asm/kmap_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/avr32/include/asm/kmap_types.h	2012-07-11 20:20:31.840843335 +0200
@@ -22,7 +22,8 @@ D(10)	KM_IRQ0,
 D(11)	KM_IRQ1,
 D(12)	KM_SOFTIRQ0,
 D(13)	KM_SOFTIRQ1,
-D(14)	KM_TYPE_NR
+D(14)	KM_CLEARPAGE,
+D(15)	KM_TYPE_NR
 };
 
 #undef D
diff -NurpP --minimal linux-3.2.22/arch/avr32/mm/fault.c linux-3.2.22-g-v/arch/avr32/mm/fault.c
--- linux-3.2.22/arch/avr32/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/avr32/mm/fault.c	2012-07-11 20:20:31.844104611 +0200
@@ -41,6 +41,23 @@ static inline int notify_page_fault(stru
 
 int exception_trace = 1;
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (unsigned char *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * This routine handles page faults. It determines the address and the
  * problem, and then passes it off to one of the appropriate routines.
@@ -156,6 +173,16 @@ bad_area:
 	up_read(&mm->mmap_sem);
 
 	if (user_mode(regs)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+			if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) {
+				pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp);
+				do_group_exit(SIGKILL);
+			}
+		}
+#endif
+
 		if (exception_trace && printk_ratelimit())
 			printk("%s%s[%d]: segfault at %08lx pc %08lx "
 			       "sp %08lx ecr %lu\n",
diff -NurpP --minimal linux-3.2.22/arch/blackfin/include/asm/cache.h linux-3.2.22-g-v/arch/blackfin/include/asm/cache.h
--- linux-3.2.22/arch/blackfin/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/blackfin/include/asm/cache.h	2012-07-11 20:20:31.844104611 +0200
@@ -7,6 +7,7 @@
 #ifndef __ARCH_BLACKFIN_CACHE_H
 #define __ARCH_BLACKFIN_CACHE_H
 
+#include <linux/const.h>
 #include <linux/linkage.h>	/* for asmlinkage */
 
 /*
@@ -14,7 +15,7 @@
  * Blackfin loads 32 bytes for cache
  */
 #define L1_CACHE_SHIFT	5
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 #define SMP_CACHE_BYTES	L1_CACHE_BYTES
 
 #define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
diff -NurpP --minimal linux-3.2.22/arch/cris/include/arch-v10/arch/cache.h linux-3.2.22-g-v/arch/cris/include/arch-v10/arch/cache.h
--- linux-3.2.22/arch/cris/include/arch-v10/arch/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/cris/include/arch-v10/arch/cache.h	2012-07-11 20:20:31.847450760 +0200
@@ -1,8 +1,9 @@
 #ifndef _ASM_ARCH_CACHE_H
 #define _ASM_ARCH_CACHE_H
 
+#include <linux/const.h>
 /* Etrax 100LX have 32-byte cache-lines. */
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* _ASM_ARCH_CACHE_H */
diff -NurpP --minimal linux-3.2.22/arch/cris/include/arch-v32/arch/cache.h linux-3.2.22-g-v/arch/cris/include/arch-v32/arch/cache.h
--- linux-3.2.22/arch/cris/include/arch-v32/arch/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/cris/include/arch-v32/arch/cache.h	2012-07-11 20:20:31.898133748 +0200
@@ -1,11 +1,12 @@
 #ifndef _ASM_CRIS_ARCH_CACHE_H
 #define _ASM_CRIS_ARCH_CACHE_H
 
+#include <linux/const.h>
 #include <arch/hwregs/dma.h>
 
 /* A cache-line is 32 bytes. */
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
 
diff -NurpP --minimal linux-3.2.22/arch/cris/Kconfig linux-3.2.22-g-v/arch/cris/Kconfig
--- linux-3.2.22/arch/cris/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/cris/Kconfig	2012-07-11 20:20:45.307449635 +0200
@@ -678,6 +678,8 @@ source "drivers/staging/Kconfig"
 
 source "arch/cris/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/frv/include/asm/atomic.h linux-3.2.22-g-v/arch/frv/include/asm/atomic.h
--- linux-3.2.22/arch/frv/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/frv/include/asm/atomic.h	2012-07-11 20:20:31.924185596 +0200
@@ -241,6 +241,16 @@ extern uint32_t __xchg_32(uint32_t i, vo
 #define atomic64_cmpxchg(v, old, new)	(__cmpxchg_64(old, new, &(v)->counter))
 #define atomic64_xchg(v, new)		(__xchg_64(new, &(v)->counter))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
 {
 	int c, old;
diff -NurpP --minimal linux-3.2.22/arch/frv/include/asm/cache.h linux-3.2.22-g-v/arch/frv/include/asm/cache.h
--- linux-3.2.22/arch/frv/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/frv/include/asm/cache.h	2012-07-11 20:20:31.940575976 +0200
@@ -12,10 +12,11 @@
 #ifndef __ASM_CACHE_H
 #define __ASM_CACHE_H
 
+#include <linux/const.h>
 
 /* bytes per L1 cache line */
 #define L1_CACHE_SHIFT		(CONFIG_FRV_L1_CACHE_SHIFT)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
 #define ____cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
diff -NurpP --minimal linux-3.2.22/arch/frv/include/asm/kmap_types.h linux-3.2.22-g-v/arch/frv/include/asm/kmap_types.h
--- linux-3.2.22/arch/frv/include/asm/kmap_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/frv/include/asm/kmap_types.h	2012-07-11 20:20:32.187302711 +0200
@@ -23,6 +23,7 @@ enum km_type {
 	KM_IRQ1,
 	KM_SOFTIRQ0,
 	KM_SOFTIRQ1,
+	KM_CLEARPAGE,
 	KM_TYPE_NR
 };
 
diff -NurpP --minimal linux-3.2.22/arch/frv/kernel/kernel_thread.S linux-3.2.22-g-v/arch/frv/kernel/kernel_thread.S
--- linux-3.2.22/arch/frv/kernel/kernel_thread.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/frv/kernel/kernel_thread.S	2012-07-11 20:20:45.310782999 +0200
@@ -37,7 +37,7 @@ kernel_thread:
 
 	# start by forking the current process, but with shared VM
 	setlos.p	#__NR_clone,gr7		; syscall number
-	ori		gr10,#CLONE_VM,gr8	; first syscall arg	[clone_flags]
+	ori		gr10,#CLONE_KT,gr8	; first syscall arg	[clone_flags]
 	sethi.p		#0xe4e4,gr9		; second syscall arg	[newsp]
 	setlo		#0xe4e4,gr9
 	setlos.p	#0,gr10			; third syscall arg	[parent_tidptr]
diff -NurpP --minimal linux-3.2.22/arch/frv/mm/elf-fdpic.c linux-3.2.22-g-v/arch/frv/mm/elf-fdpic.c
--- linux-3.2.22/arch/frv/mm/elf-fdpic.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/frv/mm/elf-fdpic.c	2012-07-11 20:20:32.207530699 +0200
@@ -73,8 +73,7 @@ unsigned long arch_get_unmapped_area(str
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(current->mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len))
 			goto success;
 	}
 
@@ -89,7 +88,7 @@ unsigned long arch_get_unmapped_area(str
 			for (; vma; vma = vma->vm_next) {
 				if (addr > limit)
 					break;
-				if (addr + len <= vma->vm_start)
+				if (check_heap_stack_gap(vma, addr, len))
 					goto success;
 				addr = vma->vm_end;
 			}
@@ -104,7 +103,7 @@ unsigned long arch_get_unmapped_area(str
 		for (; vma; vma = vma->vm_next) {
 			if (addr > limit)
 				break;
-			if (addr + len <= vma->vm_start)
+			if (check_heap_stack_gap(vma, addr, len))
 				goto success;
 			addr = vma->vm_end;
 		}
diff -NurpP --minimal linux-3.2.22/arch/h8300/include/asm/cache.h linux-3.2.22-g-v/arch/h8300/include/asm/cache.h
--- linux-3.2.22/arch/h8300/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/h8300/include/asm/cache.h	2012-07-11 20:20:32.242332575 +0200
@@ -1,8 +1,10 @@
 #ifndef __ARCH_H8300_CACHE_H
 #define __ARCH_H8300_CACHE_H
 
+#include <linux/const.h>
+
 /* bytes per L1 cache line */
-#define        L1_CACHE_BYTES  4
+#define        L1_CACHE_BYTES  _AC(4,UL)
 
 /* m68k-elf-gcc  2.95.2 doesn't like these */
 
diff -NurpP --minimal linux-3.2.22/arch/h8300/Kconfig linux-3.2.22-g-v/arch/h8300/Kconfig
--- linux-3.2.22/arch/h8300/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/h8300/Kconfig	2012-07-11 20:20:45.310782999 +0200
@@ -213,6 +213,8 @@ source "fs/Kconfig"
 
 source "arch/h8300/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/hexagon/include/asm/cache.h linux-3.2.22-g-v/arch/hexagon/include/asm/cache.h
--- linux-3.2.22/arch/hexagon/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/hexagon/include/asm/cache.h	2012-07-11 20:20:32.253984754 +0200
@@ -21,9 +21,11 @@
 #ifndef __ASM_CACHE_H
 #define __ASM_CACHE_H
 
+#include <linux/const.h>
+
 /* Bytes per L1 cache line */
-#define L1_CACHE_SHIFT		(5)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_SHIFT		5
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __cacheline_aligned	__aligned(L1_CACHE_BYTES)
 #define ____cacheline_aligned	__aligned(L1_CACHE_BYTES)
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/atomic.h linux-3.2.22-g-v/arch/ia64/include/asm/atomic.h
--- linux-3.2.22/arch/ia64/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/atomic.h	2012-07-11 20:20:32.253984754 +0200
@@ -209,6 +209,16 @@ atomic64_add_negative (__s64 i, atomic64
 #define atomic64_inc(v)			atomic64_add(1, (v))
 #define atomic64_dec(v)			atomic64_sub(1, (v))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 /* Atomic operations are already serializing */
 #define smp_mb__before_atomic_dec()	barrier()
 #define smp_mb__after_atomic_dec()	barrier()
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/cache.h linux-3.2.22-g-v/arch/ia64/include/asm/cache.h
--- linux-3.2.22/arch/ia64/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/cache.h	2012-07-11 20:20:32.253984754 +0200
@@ -1,6 +1,7 @@
 #ifndef _ASM_IA64_CACHE_H
 #define _ASM_IA64_CACHE_H
 
+#include <linux/const.h>
 
 /*
  * Copyright (C) 1998-2000 Hewlett-Packard Co
@@ -9,7 +10,7 @@
 
 /* Bytes per L1 (data) cache line.  */
 #define L1_CACHE_SHIFT		CONFIG_IA64_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #ifdef CONFIG_SMP
 # define SMP_CACHE_SHIFT	L1_CACHE_SHIFT
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/elf.h linux-3.2.22-g-v/arch/ia64/include/asm/elf.h
--- linux-3.2.22/arch/ia64/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/elf.h	2012-07-11 20:20:32.253984754 +0200
@@ -42,6 +42,13 @@
  */
 #define ELF_ET_DYN_BASE		(TASK_UNMAPPED_BASE + 0x800000000UL)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
+#define PAX_DELTA_STACK_LEN	(current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
+#endif
+
 #define PT_IA_64_UNWIND		0x70000001
 
 /* IA-64 relocations: */
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/pgalloc.h linux-3.2.22-g-v/arch/ia64/include/asm/pgalloc.h
--- linux-3.2.22/arch/ia64/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/pgalloc.h	2012-07-11 20:20:32.253984754 +0200
@@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t
 	pgd_val(*pgd_entry) = __pa(pud);
 }
 
+static inline void
+pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
+{
+	pgd_populate(mm, pgd_entry, pud);
+}
+
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return quicklist_alloc(0, GFP_KERNEL, NULL);
@@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t
 	pud_val(*pud_entry) = __pa(pmd);
 }
 
+static inline void
+pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
+{
+	pud_populate(mm, pud_entry, pmd);
+}
+
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return quicklist_alloc(0, GFP_KERNEL, NULL);
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/pgtable.h linux-3.2.22-g-v/arch/ia64/include/asm/pgtable.h
--- linux-3.2.22/arch/ia64/include/asm/pgtable.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/pgtable.h	2012-07-11 20:20:32.253984754 +0200
@@ -12,7 +12,7 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
-
+#include <linux/const.h>
 #include <asm/mman.h>
 #include <asm/page.h>
 #include <asm/processor.h>
@@ -143,6 +143,17 @@
 #define PAGE_READONLY	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
 #define PAGE_COPY	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
 #define PAGE_COPY_EXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW)
+# define PAGE_READONLY_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
+# define PAGE_COPY_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+#endif
+
 #define PAGE_GATE	__pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX)
 #define PAGE_KERNEL	__pgprot(__DIRTY_BITS  | _PAGE_PL_0 | _PAGE_AR_RWX)
 #define PAGE_KERNELRX	__pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX)
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/spinlock.h linux-3.2.22-g-v/arch/ia64/include/asm/spinlock.h
--- linux-3.2.22/arch/ia64/include/asm/spinlock.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/spinlock.h	2012-07-11 20:20:32.257288044 +0200
@@ -72,7 +72,7 @@ static __always_inline void __ticket_spi
 	unsigned short	*p = (unsigned short *)&lock->lock + 1, tmp;
 
 	asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p));
-	ACCESS_ONCE(*p) = (tmp + 2) & ~1;
+	ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1;
 }
 
 static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock)
diff -NurpP --minimal linux-3.2.22/arch/ia64/include/asm/uaccess.h linux-3.2.22-g-v/arch/ia64/include/asm/uaccess.h
--- linux-3.2.22/arch/ia64/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/include/asm/uaccess.h	2012-07-11 20:20:32.257288044 +0200
@@ -257,7 +257,7 @@ __copy_from_user (void *to, const void _
 	const void *__cu_from = (from);							\
 	long __cu_len = (n);								\
 											\
-	if (__access_ok(__cu_to, __cu_len, get_fs()))					\
+	if (__cu_len > 0  && __cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs()))			\
 		__cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len);	\
 	__cu_len;									\
 })
@@ -269,7 +269,7 @@ __copy_from_user (void *to, const void _
 	long __cu_len = (n);								\
 											\
 	__chk_user_ptr(__cu_from);							\
-	if (__access_ok(__cu_from, __cu_len, get_fs()))					\
+	if (__cu_len > 0 && __cu_len <= INT_MAX  && __access_ok(__cu_from, __cu_len, get_fs()))			\
 		__cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len);	\
 	__cu_len;									\
 })
diff -NurpP --minimal linux-3.2.22/arch/ia64/Kconfig linux-3.2.22-g-v/arch/ia64/Kconfig
--- linux-3.2.22/arch/ia64/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/Kconfig	2012-07-11 20:20:45.310782999 +0200
@@ -657,6 +657,8 @@ source "fs/Kconfig"
 
 source "arch/ia64/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/entry.S linux-3.2.22-g-v/arch/ia64/kernel/entry.S
--- linux-3.2.22/arch/ia64/kernel/entry.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/entry.S	2012-07-11 20:20:45.310782999 +0200
@@ -1714,7 +1714,7 @@ sys_call_table:
 	data8 sys_mq_notify
 	data8 sys_mq_getsetattr
 	data8 sys_kexec_load
-	data8 sys_ni_syscall			// reserved for vserver
+	data8 sys_vserver
 	data8 sys_waitid			// 1270
 	data8 sys_add_key
 	data8 sys_request_key
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/module.c linux-3.2.22-g-v/arch/ia64/kernel/module.c
--- linux-3.2.22/arch/ia64/kernel/module.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/module.c	2012-07-11 20:20:32.257288044 +0200
@@ -307,8 +307,7 @@ plt_target (struct plt_entry *plt)
 void
 module_free (struct module *mod, void *module_region)
 {
-	if (mod && mod->arch.init_unw_table &&
-	    module_region == mod->module_init) {
+	if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) {
 		unw_remove_unwind_table(mod->arch.init_unw_table);
 		mod->arch.init_unw_table = NULL;
 	}
@@ -494,15 +493,39 @@ module_frob_arch_sections (Elf_Ehdr *ehd
 }
 
 static inline int
+in_init_rx (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx;
+}
+
+static inline int
+in_init_rw (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw;
+}
+
+static inline int
 in_init (const struct module *mod, uint64_t addr)
 {
-	return addr - (uint64_t) mod->module_init < mod->init_size;
+	return in_init_rx(mod, addr) || in_init_rw(mod, addr);
+}
+
+static inline int
+in_core_rx (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx;
+}
+
+static inline int
+in_core_rw (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw;
 }
 
 static inline int
 in_core (const struct module *mod, uint64_t addr)
 {
-	return addr - (uint64_t) mod->module_core < mod->core_size;
+	return in_core_rx(mod, addr) || in_core_rw(mod, addr);
 }
 
 static inline int
@@ -685,7 +708,14 @@ do_reloc (struct module *mod, uint8_t r_
 		break;
 
 	      case RV_BDREL:
-		val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core);
+		if (in_init_rx(mod, val))
+			val -= (uint64_t) mod->module_init_rx;
+		else if (in_init_rw(mod, val))
+			val -= (uint64_t) mod->module_init_rw;
+		else if (in_core_rx(mod, val))
+			val -= (uint64_t) mod->module_core_rx;
+		else if (in_core_rw(mod, val))
+			val -= (uint64_t) mod->module_core_rw;
 		break;
 
 	      case RV_LTV:
@@ -820,15 +850,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs,
 		 *     addresses have been selected...
 		 */
 		uint64_t gp;
-		if (mod->core_size > MAX_LTOFF)
+		if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF)
 			/*
 			 * This takes advantage of fact that SHF_ARCH_SMALL gets allocated
 			 * at the end of the module.
 			 */
-			gp = mod->core_size - MAX_LTOFF / 2;
+			gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2;
 		else
-			gp = mod->core_size / 2;
-		gp = (uint64_t) mod->module_core + ((gp + 7) & -8);
+			gp = (mod->core_size_rx + mod->core_size_rw) / 2;
+		gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8);
 		mod->arch.gp = gp;
 		DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp);
 	}
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/process.c linux-3.2.22-g-v/arch/ia64/kernel/process.c
--- linux-3.2.22/arch/ia64/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/process.c	2012-07-11 20:20:45.314116230 +0200
@@ -109,8 +109,8 @@ show_regs (struct pt_regs *regs)
 	unsigned long ip = regs->cr_iip + ia64_psr(regs)->ri;
 
 	print_modules();
-	printk("\nPid: %d, CPU %d, comm: %20s\n", task_pid_nr(current),
-			smp_processor_id(), current->comm);
+	printk("\nPid: %d[#%u], CPU %d, comm: %20s\n", task_pid_nr(current),
+			current->xid, smp_processor_id(), current->comm);
 	printk("psr : %016lx ifs : %016lx ip  : [<%016lx>]    %s (%s)\n",
 	       regs->cr_ipsr, regs->cr_ifs, ip, print_tainted(),
 	       init_utsname()->release);
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/ptrace.c linux-3.2.22-g-v/arch/ia64/kernel/ptrace.c
--- linux-3.2.22/arch/ia64/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/ptrace.c	2012-07-11 20:20:45.314116230 +0200
@@ -21,6 +21,7 @@
 #include <linux/regset.h>
 #include <linux/elf.h>
 #include <linux/tracehook.h>
+#include <linux/vs_base.h>
 
 #include <asm/pgtable.h>
 #include <asm/processor.h>
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/sys_ia64.c linux-3.2.22-g-v/arch/ia64/kernel/sys_ia64.c
--- linux-3.2.22/arch/ia64/kernel/sys_ia64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/sys_ia64.c	2012-07-11 20:20:32.257288044 +0200
@@ -43,6 +43,13 @@ arch_get_unmapped_area (struct file *fil
 	if (REGION_NUMBER(addr) == RGN_HPAGE)
 		addr = 0;
 #endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		addr = mm->free_area_cache;
+	else
+#endif
+
 	if (!addr)
 		addr = mm->free_area_cache;
 
@@ -61,14 +68,14 @@ arch_get_unmapped_area (struct file *fil
 	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
 		/* At this point:  (!vma || addr < vma->vm_end). */
 		if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) {
-			if (start_addr != TASK_UNMAPPED_BASE) {
+			if (start_addr != mm->mmap_base) {
 				/* Start a new search --- just in case we missed some holes.  */
-				addr = TASK_UNMAPPED_BASE;
+				addr = mm->mmap_base;
 				goto full_search;
 			}
 			return -ENOMEM;
 		}
-		if (!vma || addr + len <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/* Remember the address where we stopped this search:  */
 			mm->free_area_cache = addr + len;
 			return addr;
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/traps.c linux-3.2.22-g-v/arch/ia64/kernel/traps.c
--- linux-3.2.22/arch/ia64/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/traps.c	2012-07-11 20:20:45.314116230 +0200
@@ -59,8 +59,9 @@ die (const char *str, struct pt_regs *re
 	put_cpu();
 
 	if (++die.lock_owner_depth < 3) {
-		printk("%s[%d]: %s %ld [%d]\n",
-		current->comm, task_pid_nr(current), str, err, ++die_counter);
+		printk("%s[%d[#%u]]: %s %ld [%d]\n",
+			current->comm, task_pid_nr(current), current->xid,
+			str, err, ++die_counter);
 		if (notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV)
 	            != NOTIFY_STOP)
 			show_regs(regs);
@@ -323,8 +324,9 @@ handle_fpu_swa (int fp_fault, struct pt_
 			if ((last.count & 15) < 5 && (ia64_fetchadd(1, &last.count, acq) & 15) < 5) {
 				last.time = current_jiffies + 5 * HZ;
 				printk(KERN_WARNING
-		       			"%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
-		       			current->comm, task_pid_nr(current), regs->cr_iip + ia64_psr(regs)->ri, isr);
+					"%s(%d[#%u]): floating-point assist fault at ip %016lx, isr %016lx\n",
+					current->comm, task_pid_nr(current), current->xid,
+					regs->cr_iip + ia64_psr(regs)->ri, isr);
 			}
 		}
 	}
diff -NurpP --minimal linux-3.2.22/arch/ia64/kernel/vmlinux.lds.S linux-3.2.22-g-v/arch/ia64/kernel/vmlinux.lds.S
--- linux-3.2.22/arch/ia64/kernel/vmlinux.lds.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/kernel/vmlinux.lds.S	2012-07-11 20:20:32.257288044 +0200
@@ -199,7 +199,7 @@ SECTIONS {
 	/* Per-cpu data: */
 	. = ALIGN(PERCPU_PAGE_SIZE);
 	PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu)
-	__phys_per_cpu_start = __per_cpu_load;
+	__phys_per_cpu_start = per_cpu_load;
 	/*
 	 * ensure percpu data fits
 	 * into percpu page size
diff -NurpP --minimal linux-3.2.22/arch/ia64/mm/fault.c linux-3.2.22-g-v/arch/ia64/mm/fault.c
--- linux-3.2.22/arch/ia64/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/mm/fault.c	2012-07-11 20:20:32.257288044 +0200
@@ -73,6 +73,23 @@ mapped_kernel_page_is_present (unsigned 
 	return pte_present(pte);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 void __kprobes
 ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *regs)
 {
@@ -146,9 +163,23 @@ ia64_do_page_fault (unsigned long addres
 	mask = (  (((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT)
 		| (((isr >> IA64_ISR_W_BIT) & 1UL) << VM_WRITE_BIT));
 
-	if ((vma->vm_flags & mask) != mask)
+	if ((vma->vm_flags & mask) != mask) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) {
+			if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip)
+				goto bad_area;
+
+			up_read(&mm->mmap_sem);
+			pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		goto bad_area;
 
+	}
+
 	/*
 	 * If for any reason at all we couldn't handle the fault, make
 	 * sure we exit gracefully rather than endlessly redo the
diff -NurpP --minimal linux-3.2.22/arch/ia64/mm/hugetlbpage.c linux-3.2.22-g-v/arch/ia64/mm/hugetlbpage.c
--- linux-3.2.22/arch/ia64/mm/hugetlbpage.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/mm/hugetlbpage.c	2012-07-11 20:20:32.260649951 +0200
@@ -171,7 +171,7 @@ unsigned long hugetlb_get_unmapped_area(
 		/* At this point:  (!vmm || addr < vmm->vm_end). */
 		if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT)
 			return -ENOMEM;
-		if (!vmm || (addr + len) <= vmm->vm_start)
+		if (check_heap_stack_gap(vmm, addr, len))
 			return addr;
 		addr = ALIGN(vmm->vm_end, HPAGE_SIZE);
 	}
diff -NurpP --minimal linux-3.2.22/arch/ia64/mm/init.c linux-3.2.22-g-v/arch/ia64/mm/init.c
--- linux-3.2.22/arch/ia64/mm/init.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/ia64/mm/init.c	2012-07-11 20:20:32.260649951 +0200
@@ -120,6 +120,19 @@ ia64_init_addr_space (void)
 		vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
 		vma->vm_end = vma->vm_start + PAGE_SIZE;
 		vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (current->mm->pax_flags & MF_PAX_PAGEEXEC) {
+			vma->vm_flags &= ~VM_EXEC;
+
+#ifdef CONFIG_PAX_MPROTECT
+			if (current->mm->pax_flags & MF_PAX_MPROTECT)
+				vma->vm_flags &= ~VM_MAYEXEC;
+#endif
+
+		}
+#endif
+
 		vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 		down_write(&current->mm->mmap_sem);
 		if (insert_vm_struct(current->mm, vma)) {
diff -NurpP --minimal linux-3.2.22/arch/m32r/include/asm/cache.h linux-3.2.22-g-v/arch/m32r/include/asm/cache.h
--- linux-3.2.22/arch/m32r/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/m32r/include/asm/cache.h	2012-07-11 20:20:32.260649951 +0200
@@ -1,8 +1,10 @@
 #ifndef _ASM_M32R_CACHE_H
 #define _ASM_M32R_CACHE_H
 
+#include <linux/const.h>
+
 /* L1 cache line size */
 #define L1_CACHE_SHIFT		4
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif  /* _ASM_M32R_CACHE_H */
diff -NurpP --minimal linux-3.2.22/arch/m32r/kernel/traps.c linux-3.2.22-g-v/arch/m32r/kernel/traps.c
--- linux-3.2.22/arch/m32r/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/m32r/kernel/traps.c	2012-07-11 20:20:45.314116230 +0200
@@ -196,8 +196,9 @@ static void show_registers(struct pt_reg
 	} else {
 		printk("SPI: %08lx\n", sp);
 	}
-	printk("Process %s (pid: %d, process nr: %d, stackpage=%08lx)",
-		current->comm, task_pid_nr(current), 0xffff & i, 4096+(unsigned long)current);
+	printk("Process %s (pid: %d[#%u], process nr: %d, stackpage=%08lx)",
+		current->comm, task_pid_nr(current), current->xid,
+		0xffff & i, 4096+(unsigned long)current);
 
 	/*
 	 * When in-kernel, we also print out the stack and code at the
diff -NurpP --minimal linux-3.2.22/arch/m32r/lib/usercopy.c linux-3.2.22-g-v/arch/m32r/lib/usercopy.c
--- linux-3.2.22/arch/m32r/lib/usercopy.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/m32r/lib/usercopy.c	2012-07-11 20:20:32.260649951 +0200
@@ -14,6 +14,9 @@
 unsigned long
 __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	prefetch(from);
 	if (access_ok(VERIFY_WRITE, to, n))
 		__copy_user(to,from,n);
@@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, 
 unsigned long
 __generic_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	prefetchw(to);
 	if (access_ok(VERIFY_READ, from, n))
 		__copy_user_zeroing(to,from,n);
diff -NurpP --minimal linux-3.2.22/arch/m68k/include/asm/cache.h linux-3.2.22-g-v/arch/m68k/include/asm/cache.h
--- linux-3.2.22/arch/m68k/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/m68k/include/asm/cache.h	2012-07-11 20:20:32.260649951 +0200
@@ -4,9 +4,11 @@
 #ifndef __ARCH_M68K_CACHE_H
 #define __ARCH_M68K_CACHE_H
 
+#include <linux/const.h>
+
 /* bytes per L1 cache line */
 #define        L1_CACHE_SHIFT  4
-#define        L1_CACHE_BYTES  (1<< L1_CACHE_SHIFT)
+#define        L1_CACHE_BYTES  (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
 
diff -NurpP --minimal linux-3.2.22/arch/m68k/Kconfig linux-3.2.22-g-v/arch/m68k/Kconfig
--- linux-3.2.22/arch/m68k/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/m68k/Kconfig	2012-07-11 20:20:45.314116230 +0200
@@ -135,6 +135,8 @@ source "fs/Kconfig"
 
 source "arch/m68k/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/microblaze/include/asm/cache.h linux-3.2.22-g-v/arch/microblaze/include/asm/cache.h
--- linux-3.2.22/arch/microblaze/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/microblaze/include/asm/cache.h	2012-07-11 20:20:32.260649951 +0200
@@ -13,11 +13,12 @@
 #ifndef _ASM_MICROBLAZE_CACHE_H
 #define _ASM_MICROBLAZE_CACHE_H
 
+#include <linux/const.h>
 #include <asm/registers.h>
 
 #define L1_CACHE_SHIFT 5
 /* word-granular cache in microblaze */
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define SMP_CACHE_BYTES	L1_CACHE_BYTES
 
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/atomic.h linux-3.2.22-g-v/arch/mips/include/asm/atomic.h
--- linux-3.2.22/arch/mips/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/atomic.h	2012-07-11 20:20:32.263986840 +0200
@@ -21,6 +21,10 @@
 #include <asm/war.h>
 #include <asm/system.h>
 
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#endif
+
 #define ATOMIC_INIT(i)    { (i) }
 
 /*
@@ -765,6 +769,16 @@ static __inline__ int atomic64_add_unles
  */
 #define atomic64_add_negative(i, v) (atomic64_add_return(i, (v)) < 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* CONFIG_64BIT */
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/cache.h linux-3.2.22-g-v/arch/mips/include/asm/cache.h
--- linux-3.2.22/arch/mips/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/cache.h	2012-07-11 20:20:32.263986840 +0200
@@ -9,10 +9,11 @@
 #ifndef _ASM_CACHE_H
 #define _ASM_CACHE_H
 
+#include <linux/const.h>
 #include <kmalloc.h>
 
 #define L1_CACHE_SHIFT		CONFIG_MIPS_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define SMP_CACHE_SHIFT		L1_CACHE_SHIFT
 #define SMP_CACHE_BYTES		L1_CACHE_BYTES
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/elf.h linux-3.2.22-g-v/arch/mips/include/asm/elf.h
--- linux-3.2.22/arch/mips/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/elf.h	2012-07-11 20:20:32.263986840 +0200
@@ -372,13 +372,16 @@ extern const char *__elf_platform;
 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
 #endif
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 struct linux_binprm;
 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 				       int uses_interp);
 
-struct mm_struct;
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 #endif /* _ASM_ELF_H */
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/page.h linux-3.2.22-g-v/arch/mips/include/asm/page.h
--- linux-3.2.22/arch/mips/include/asm/page.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/page.h	2012-07-11 20:20:32.263986840 +0200
@@ -93,7 +93,7 @@ extern void copy_user_highpage(struct pa
   #ifdef CONFIG_CPU_MIPS32
     typedef struct { unsigned long pte_low, pte_high; } pte_t;
     #define pte_val(x)    ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
-    #define __pte(x)      ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; })
+    #define __pte(x)      ({ pte_t __pte = {(x), (x) >> 32}; __pte; })
   #else
      typedef struct { unsigned long long pte; } pte_t;
      #define pte_val(x)	((x).pte)
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/pgalloc.h linux-3.2.22-g-v/arch/mips/include/asm/pgalloc.h
--- linux-3.2.22/arch/mips/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/pgalloc.h	2012-07-11 20:20:32.263986840 +0200
@@ -37,6 +37,11 @@ static inline void pud_populate(struct m
 {
 	set_pud(pud, __pud((unsigned long)pmd));
 }
+
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_populate(mm, pud, pmd);
+}
 #endif
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/system.h linux-3.2.22-g-v/arch/mips/include/asm/system.h
--- linux-3.2.22/arch/mips/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/system.h	2012-07-11 20:20:32.263986840 +0200
@@ -230,6 +230,6 @@ extern void per_cpu_trap_init(void);
  */
 #define __ARCH_WANT_UNLOCKED_CTXSW
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 #endif /* _ASM_SYSTEM_H */
diff -NurpP --minimal linux-3.2.22/arch/mips/include/asm/thread_info.h linux-3.2.22-g-v/arch/mips/include/asm/thread_info.h
--- linux-3.2.22/arch/mips/include/asm/thread_info.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/include/asm/thread_info.h	2012-07-11 20:20:32.263986840 +0200
@@ -124,6 +124,8 @@ register struct thread_info *__current_t
 #define TIF_32BIT_ADDR		23	/* 32-bit address space (o32/n32) */
 #define TIF_FPUBOUND		24	/* thread bound to FPU-full CPU set */
 #define TIF_LOAD_WATCH		25	/* If set, load watch registers */
+/* li takes a 32bit immediate */
+#define TIF_GRSEC_SETXID	29	/* update credentials on syscall entry/exit */
 #define TIF_SYSCALL_TRACE	31	/* syscall trace active */
 
 #ifdef CONFIG_MIPS32_O32
@@ -148,15 +150,18 @@ register struct thread_info *__current_t
 #define _TIF_32BIT_ADDR		(1<<TIF_32BIT_ADDR)
 #define _TIF_FPUBOUND		(1<<TIF_FPUBOUND)
 #define _TIF_LOAD_WATCH		(1<<TIF_LOAD_WATCH)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
+
+#define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_leave() */
-#define _TIF_WORK_SYSCALL_EXIT	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT)
+#define _TIF_WORK_SYSCALL_EXIT	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_GRSEC_SETXID)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK		(0x0000ffef &				\
 					~(_TIF_SECCOMP | _TIF_SYSCALL_AUDIT))
 /* work to do on any return to u-space */
-#define _TIF_ALLWORK_MASK	(0x8000ffff & ~_TIF_SECCOMP)
+#define _TIF_ALLWORK_MASK	((0x8000ffff & ~_TIF_SECCOMP) | _TIF_GRSEC_SETXID)
 
 #endif /* __KERNEL__ */
 
diff -NurpP --minimal linux-3.2.22/arch/mips/Kconfig linux-3.2.22-g-v/arch/mips/Kconfig
--- linux-3.2.22/arch/mips/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/Kconfig	2012-07-11 20:20:45.317449863 +0200
@@ -2478,6 +2478,8 @@ source "fs/Kconfig"
 
 source "arch/mips/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/binfmt_elfn32.c linux-3.2.22-g-v/arch/mips/kernel/binfmt_elfn32.c
--- linux-3.2.22/arch/mips/kernel/binfmt_elfn32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/binfmt_elfn32.c	2012-07-11 20:20:32.263986840 +0200
@@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N
 #undef ELF_ET_DYN_BASE
 #define ELF_ET_DYN_BASE         (TASK32_SIZE / 3 * 2)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #include <asm/processor.h>
 #include <linux/module.h>
 #include <linux/elfcore.h>
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/binfmt_elfo32.c linux-3.2.22-g-v/arch/mips/kernel/binfmt_elfo32.c
--- linux-3.2.22/arch/mips/kernel/binfmt_elfo32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/binfmt_elfo32.c	2012-07-11 20:20:32.267287327 +0200
@@ -52,6 +52,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N
 #undef ELF_ET_DYN_BASE
 #define ELF_ET_DYN_BASE         (TASK32_SIZE / 3 * 2)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #include <asm/processor.h>
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/process.c linux-3.2.22-g-v/arch/mips/kernel/process.c
--- linux-3.2.22/arch/mips/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/process.c	2012-07-11 20:20:32.267287327 +0200
@@ -481,15 +481,3 @@ unsigned long get_wchan(struct task_stru
 out:
 	return pc;
 }
-
-/*
- * Don't forget that the stack pointer must be aligned on a 8 bytes
- * boundary for 32-bits ABI and 16 bytes for 64-bits ABI.
- */
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-
-	return sp & ALMASK;
-}
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/ptrace.c linux-3.2.22-g-v/arch/mips/kernel/ptrace.c
--- linux-3.2.22/arch/mips/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/ptrace.c	2012-07-11 20:20:45.317449863 +0200
@@ -25,6 +25,7 @@
 #include <linux/security.h>
 #include <linux/audit.h>
 #include <linux/seccomp.h>
+#include <linux/vs_base.h>
 
 #include <asm/byteorder.h>
 #include <asm/cpu.h>
@@ -263,6 +264,9 @@ long arch_ptrace(struct task_struct *chi
 	void __user *datavp = (void __user *) data;
 	unsigned long __user *datalp = (void __user *) data;
 
+	if (!vx_check(vx_task_xid(child), VS_WATCH_P | VS_IDENT))
+		goto out;
+
 	switch (request) {
 	/* when I and D space are separate, these will need to be fixed. */
 	case PTRACE_PEEKTEXT: /* read word at location addr. */
@@ -529,6 +533,10 @@ static inline int audit_arch(void)
 	return arch;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * Notification of system call entry/exit
  * - triggered by current->work.syscall_trace
@@ -538,6 +546,11 @@ asmlinkage void syscall_trace_enter(stru
 	/* do the secure computing check first */
 	secure_computing(regs->regs[2]);
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (!(current->ptrace & PT_PTRACED))
 		goto out;
 
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/scall32-o32.S linux-3.2.22-g-v/arch/mips/kernel/scall32-o32.S
--- linux-3.2.22/arch/mips/kernel/scall32-o32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/scall32-o32.S	2012-07-11 20:20:45.317449863 +0200
@@ -52,7 +52,7 @@ NESTED(handle_sys, PT_SIZE, sp)
 
 stack_done:
 	lw	t0, TI_FLAGS($28)	# syscall tracing enabled?
-	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+	li	t1, _TIF_SYSCALL_WORK
 	and	t0, t1
 	bnez	t0, syscall_trace_entry	# -> yes
 
@@ -523,7 +523,7 @@ einval:	li	v0, -ENOSYS
 	sys	sys_mq_timedreceive	5
 	sys	sys_mq_notify		2	/* 4275 */
 	sys	sys_mq_getsetattr	3
-	sys	sys_ni_syscall		0	/* sys_vserver */
+	sys	sys_vserver		3
 	sys	sys_waitid		5
 	sys	sys_ni_syscall		0	/* available, was setaltroot */
 	sys	sys_add_key		5	/* 4280 */
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/scall64-64.S linux-3.2.22-g-v/arch/mips/kernel/scall64-64.S
--- linux-3.2.22/arch/mips/kernel/scall64-64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/scall64-64.S	2012-07-11 20:20:45.317449863 +0200
@@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp)
 
 	sd	a3, PT_R26(sp)		# save a3 for syscall restarting
 
-	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+	li	t1, _TIF_SYSCALL_WORK
 	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
 	and	t0, t1, t0
 	bnez	t0, syscall_trace_entry
@@ -362,7 +362,7 @@ sys_call_table:
 	PTR	sys_mq_timedreceive
 	PTR	sys_mq_notify
 	PTR	sys_mq_getsetattr		/* 5235 */
-	PTR	sys_ni_syscall			/* sys_vserver */
+	PTR	sys_vserver
 	PTR	sys_waitid
 	PTR	sys_ni_syscall			/* available, was setaltroot */
 	PTR	sys_add_key
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/scall64-n32.S linux-3.2.22-g-v/arch/mips/kernel/scall64-n32.S
--- linux-3.2.22/arch/mips/kernel/scall64-n32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/scall64-n32.S	2012-07-11 20:20:45.320782785 +0200
@@ -53,7 +53,7 @@ NESTED(handle_sysn32, PT_SIZE, sp)
 
 	sd	a3, PT_R26(sp)		# save a3 for syscall restarting
 
-	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+	li	t1, _TIF_SYSCALL_WORK
 	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
 	and	t0, t1, t0
 	bnez	t0, n32_syscall_trace_entry
@@ -361,7 +361,7 @@ EXPORT(sysn32_call_table)
 	PTR	compat_sys_mq_timedreceive
 	PTR	compat_sys_mq_notify
 	PTR	compat_sys_mq_getsetattr
-	PTR	sys_ni_syscall			/* 6240, sys_vserver */
+	PTR	sys32_vserver			/* 6240 */
 	PTR	compat_sys_waitid
 	PTR	sys_ni_syscall			/* available, was setaltroot */
 	PTR	sys_add_key
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/scall64-o32.S linux-3.2.22-g-v/arch/mips/kernel/scall64-o32.S
--- linux-3.2.22/arch/mips/kernel/scall64-o32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/scall64-o32.S	2012-07-11 20:20:45.320782785 +0200
@@ -81,7 +81,7 @@ NESTED(handle_sys, PT_SIZE, sp)
 	PTR	4b, bad_stack
 	.previous
 
-	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+	li	t1, _TIF_SYSCALL_WORK
 	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
 	and	t0, t1, t0
 	bnez	t0, trace_a_syscall
@@ -480,7 +480,7 @@ sys_call_table:
 	PTR	compat_sys_mq_timedreceive
 	PTR	compat_sys_mq_notify		/* 4275 */
 	PTR	compat_sys_mq_getsetattr
-	PTR	sys_ni_syscall			/* sys_vserver */
+	PTR	sys32_vserver
 	PTR	sys_32_waitid
 	PTR	sys_ni_syscall			/* available, was setaltroot */
 	PTR	sys_add_key			/* 4280 */
diff -NurpP --minimal linux-3.2.22/arch/mips/kernel/traps.c linux-3.2.22-g-v/arch/mips/kernel/traps.c
--- linux-3.2.22/arch/mips/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/kernel/traps.c	2012-07-11 20:20:45.320782785 +0200
@@ -343,9 +343,10 @@ void show_registers(struct pt_regs *regs
 
 	__show_regs(regs);
 	print_modules();
-	printk("Process %s (pid: %d, threadinfo=%p, task=%p, tls=%0*lx)\n",
-	       current->comm, current->pid, current_thread_info(), current,
-	      field, current_thread_info()->tp_value);
+	printk("Process %s (pid: %d:#%u, threadinfo=%p, task=%p, tls=%0*lx)\n",
+		current->comm, task_pid_nr(current), current->xid,
+		current_thread_info(), current,
+		field, current_thread_info()->tp_value);
 	if (cpu_has_userlocal) {
 		unsigned long tls;
 
diff -NurpP --minimal linux-3.2.22/arch/mips/mm/fault.c linux-3.2.22-g-v/arch/mips/mm/fault.c
--- linux-3.2.22/arch/mips/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/mm/fault.c	2012-07-11 20:20:32.270653137 +0200
@@ -28,6 +28,23 @@
 #include <asm/highmem.h>		/* For VMALLOC_END */
 #include <linux/kdebug.h>
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * This routine handles page faults.  It determines the address,
  * and the problem, and then passes it off to one of the appropriate
diff -NurpP --minimal linux-3.2.22/arch/mips/mm/mmap.c linux-3.2.22-g-v/arch/mips/mm/mmap.c
--- linux-3.2.22/arch/mips/mm/mmap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mips/mm/mmap.c	2012-07-11 20:20:32.270653137 +0200
@@ -95,6 +95,11 @@ static unsigned long arch_get_unmapped_a
 		do_color_align = 1;
 
 	/* requesting a specific address */
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -102,8 +107,7 @@ static unsigned long arch_get_unmapped_a
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vmm, addr, len))
 			return addr;
 	}
 
@@ -118,7 +122,7 @@ static unsigned long arch_get_unmapped_a
 			/* At this point:  (!vma || addr < vma->vm_end). */
 			if (TASK_SIZE - len < addr)
 				return -ENOMEM;
-			if (!vma || addr + len <= vma->vm_start)
+			if (check_heap_stack_gap(vmm, addr, len))
 				return addr;
 			addr = vma->vm_end;
 			if (do_color_align)
@@ -145,7 +149,7 @@ static unsigned long arch_get_unmapped_a
 		/* make sure it can fit in the remaining address space */
 		if (likely(addr > len)) {
 			vma = find_vma(mm, addr - len);
-			if (!vma || addr <= vma->vm_start) {
+			if (check_heap_stack_gap(vmm, addr - len, len))
 				/* cache the address as a hint for next time */
 				return mm->free_area_cache = addr - len;
 			}
@@ -165,7 +169,7 @@ static unsigned long arch_get_unmapped_a
 			 * return with success:
 			 */
 			vma = find_vma(mm, addr);
-			if (likely(!vma || addr + len <= vma->vm_start)) {
+			if (check_heap_stack_gap(vmm, addr, len)) {
 				/* cache the address as a hint for next time */
 				return mm->free_area_cache = addr;
 			}
@@ -242,30 +246,3 @@ void arch_pick_mmap_layout(struct mm_str
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
 }
-
-static inline unsigned long brk_rnd(void)
-{
-	unsigned long rnd = get_random_int();
-
-	rnd = rnd << PAGE_SHIFT;
-	/* 8MB for 32bit, 256MB for 64bit */
-	if (TASK_IS_32BIT_ADDR)
-		rnd = rnd & 0x7ffffful;
-	else
-		rnd = rnd & 0xffffffful;
-
-	return rnd;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long base = mm->brk;
-	unsigned long ret;
-
-	ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < mm->brk)
-		return mm->brk;
-
-	return ret;
-}
diff -NurpP --minimal linux-3.2.22/arch/mn10300/proc-mn103e010/include/proc/cache.h linux-3.2.22-g-v/arch/mn10300/proc-mn103e010/include/proc/cache.h
--- linux-3.2.22/arch/mn10300/proc-mn103e010/include/proc/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mn10300/proc-mn103e010/include/proc/cache.h	2012-07-11 20:20:32.270653137 +0200
@@ -11,12 +11,14 @@
 #ifndef _ASM_PROC_CACHE_H
 #define _ASM_PROC_CACHE_H
 
+#include <linux/const.h>
+
 /* L1 cache */
 
 #define L1_CACHE_NWAYS		4	/* number of ways in caches */
 #define L1_CACHE_NENTRIES	256	/* number of entries in each way */
-#define L1_CACHE_BYTES		16	/* bytes per entry */
 #define L1_CACHE_SHIFT		4	/* shift for bytes per entry */
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)	/* bytes per entry */
 #define L1_CACHE_WAYDISP	0x1000	/* displacement of one way from the next */
 
 #define L1_CACHE_TAG_VALID	0x00000001	/* cache tag valid bit */
diff -NurpP --minimal linux-3.2.22/arch/mn10300/proc-mn2ws0050/include/proc/cache.h linux-3.2.22-g-v/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
--- linux-3.2.22/arch/mn10300/proc-mn2ws0050/include/proc/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/mn10300/proc-mn2ws0050/include/proc/cache.h	2012-07-11 20:20:32.270653137 +0200
@@ -16,13 +16,15 @@
 #ifndef _ASM_PROC_CACHE_H
 #define _ASM_PROC_CACHE_H
 
+#include <linux/const.h>
+
 /*
  * L1 cache
  */
 #define L1_CACHE_NWAYS		4		/* number of ways in caches */
 #define L1_CACHE_NENTRIES	128		/* number of entries in each way */
-#define L1_CACHE_BYTES		32		/* bytes per entry */
 #define L1_CACHE_SHIFT		5		/* shift for bytes per entry */
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)	/* bytes per entry */
 #define L1_CACHE_WAYDISP	0x1000		/* distance from one way to the next */
 
 #define L1_CACHE_TAG_VALID	0x00000001	/* cache tag valid bit */
diff -NurpP --minimal linux-3.2.22/arch/openrisc/include/asm/cache.h linux-3.2.22-g-v/arch/openrisc/include/asm/cache.h
--- linux-3.2.22/arch/openrisc/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/openrisc/include/asm/cache.h	2012-07-11 20:20:32.270653137 +0200
@@ -19,11 +19,13 @@
 #ifndef __ASM_OPENRISC_CACHE_H
 #define __ASM_OPENRISC_CACHE_H
 
+#include <linux/const.h>
+
 /* FIXME: How can we replace these with values from the CPU...
  * they shouldn't be hard-coded!
  */
 
-#define L1_CACHE_BYTES 16
 #define L1_CACHE_SHIFT 4
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* __ASM_OPENRISC_CACHE_H */
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/atomic.h linux-3.2.22-g-v/arch/parisc/include/asm/atomic.h
--- linux-3.2.22/arch/parisc/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/atomic.h	2012-07-11 20:20:32.270653137 +0200
@@ -335,6 +335,16 @@ static __inline__ int atomic64_add_unles
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* !CONFIG_64BIT */
 
 
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/cache.h linux-3.2.22-g-v/arch/parisc/include/asm/cache.h
--- linux-3.2.22/arch/parisc/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/cache.h	2012-07-11 20:20:32.270653137 +0200
@@ -5,6 +5,7 @@
 #ifndef __ARCH_PARISC_CACHE_H
 #define __ARCH_PARISC_CACHE_H
 
+#include <linux/const.h>
 
 /*
  * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have
@@ -15,13 +16,13 @@
  * just ruin performance.
  */
 #ifdef CONFIG_PA20
-#define L1_CACHE_BYTES 64
 #define L1_CACHE_SHIFT 6
 #else
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
 #endif
 
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
+
 #ifndef __ASSEMBLY__
 
 #define SMP_CACHE_BYTES L1_CACHE_BYTES
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/elf.h linux-3.2.22-g-v/arch/parisc/include/asm/elf.h
--- linux-3.2.22/arch/parisc/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/elf.h	2012-07-11 20:20:32.270653137 +0200
@@ -342,6 +342,13 @@ struct pt_regs;	/* forward declaration..
 
 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x01000000)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x10000UL
+
+#define PAX_DELTA_MMAP_LEN	16
+#define PAX_DELTA_STACK_LEN	16
+#endif
+
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
    but it's not easy, and we've already done it here.  */
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/pgalloc.h linux-3.2.22-g-v/arch/parisc/include/asm/pgalloc.h
--- linux-3.2.22/arch/parisc/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/pgalloc.h	2012-07-11 20:20:32.273950667 +0200
@@ -61,6 +61,11 @@ static inline void pgd_populate(struct m
 		        (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT));
 }
 
+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+	pgd_populate(mm, pgd, pmd);
+}
+
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
 	pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT,
@@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_st
 #define pmd_alloc_one(mm, addr)		({ BUG(); ((pmd_t *)2); })
 #define pmd_free(mm, x)			do { } while (0)
 #define pgd_populate(mm, pmd, pte)	BUG()
+#define pgd_populate_kernel(mm, pmd, pte)	BUG()
 
 #endif
 
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/pgtable.h linux-3.2.22-g-v/arch/parisc/include/asm/pgtable.h
--- linux-3.2.22/arch/parisc/include/asm/pgtable.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/pgtable.h	2012-07-11 20:20:32.273950667 +0200
@@ -210,6 +210,17 @@ struct vm_area_struct;
 #define PAGE_EXECREAD   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED)
 #define PAGE_COPY       PAGE_EXECREAD
 #define PAGE_RWX        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED)
+# define PAGE_COPY_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
+# define PAGE_READONLY_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+#endif
+
 #define PAGE_KERNEL	__pgprot(_PAGE_KERNEL)
 #define PAGE_KERNEL_EXEC	__pgprot(_PAGE_KERNEL_EXEC)
 #define PAGE_KERNEL_RWX	__pgprot(_PAGE_KERNEL_RWX)
diff -NurpP --minimal linux-3.2.22/arch/parisc/include/asm/uaccess.h linux-3.2.22-g-v/arch/parisc/include/asm/uaccess.h
--- linux-3.2.22/arch/parisc/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/include/asm/uaccess.h	2012-07-11 20:20:32.273950667 +0200
@@ -253,10 +253,10 @@ static inline unsigned long __must_check
                                           const void __user *from,
                                           unsigned long n)
 {
-        int sz = __compiletime_object_size(to);
+        size_t sz = __compiletime_object_size(to);
         int ret = -EFAULT;
 
-        if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
+        if (likely(sz == (size_t)-1 || !__builtin_constant_p(n) || sz >= n))
                 ret = __copy_from_user(to, from, n);
         else
                 copy_from_user_overflow();
diff -NurpP --minimal linux-3.2.22/arch/parisc/Kconfig linux-3.2.22-g-v/arch/parisc/Kconfig
--- linux-3.2.22/arch/parisc/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/Kconfig	2012-07-11 20:20:45.320782785 +0200
@@ -278,6 +278,8 @@ source "fs/Kconfig"
 
 source "arch/parisc/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/parisc/kernel/module.c linux-3.2.22-g-v/arch/parisc/kernel/module.c
--- linux-3.2.22/arch/parisc/kernel/module.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/kernel/module.c	2012-07-11 20:20:32.273950667 +0200
@@ -98,16 +98,38 @@
 
 /* three functions to determine where in the module core
  * or init pieces the location is */
+static inline int in_init_rx(struct module *me, void *loc)
+{
+	return (loc >= me->module_init_rx &&
+		loc < (me->module_init_rx + me->init_size_rx));
+}
+
+static inline int in_init_rw(struct module *me, void *loc)
+{
+	return (loc >= me->module_init_rw &&
+		loc < (me->module_init_rw + me->init_size_rw));
+}
+
 static inline int in_init(struct module *me, void *loc)
 {
-	return (loc >= me->module_init &&
-		loc <= (me->module_init + me->init_size));
+	return in_init_rx(me, loc) || in_init_rw(me, loc);
+}
+
+static inline int in_core_rx(struct module *me, void *loc)
+{
+	return (loc >= me->module_core_rx &&
+		loc < (me->module_core_rx + me->core_size_rx));
+}
+
+static inline int in_core_rw(struct module *me, void *loc)
+{
+	return (loc >= me->module_core_rw &&
+		loc < (me->module_core_rw + me->core_size_rw));
 }
 
 static inline int in_core(struct module *me, void *loc)
 {
-	return (loc >= me->module_core &&
-		loc <= (me->module_core + me->core_size));
+	return in_core_rx(me, loc) || in_core_rw(me, loc);
 }
 
 static inline int in_local(struct module *me, void *loc)
@@ -373,13 +395,13 @@ int module_frob_arch_sections(CONST Elf_
 	}
 
 	/* align things a bit */
-	me->core_size = ALIGN(me->core_size, 16);
-	me->arch.got_offset = me->core_size;
-	me->core_size += gots * sizeof(struct got_entry);
+	me->core_size_rw = ALIGN(me->core_size_rw, 16);
+	me->arch.got_offset = me->core_size_rw;
+	me->core_size_rw += gots * sizeof(struct got_entry);
 
-	me->core_size = ALIGN(me->core_size, 16);
-	me->arch.fdesc_offset = me->core_size;
-	me->core_size += fdescs * sizeof(Elf_Fdesc);
+	me->core_size_rw = ALIGN(me->core_size_rw, 16);
+	me->arch.fdesc_offset = me->core_size_rw;
+	me->core_size_rw += fdescs * sizeof(Elf_Fdesc);
 
 	me->arch.got_max = gots;
 	me->arch.fdesc_max = fdescs;
@@ -397,7 +419,7 @@ static Elf64_Word get_got(struct module 
 
 	BUG_ON(value == 0);
 
-	got = me->module_core + me->arch.got_offset;
+	got = me->module_core_rw + me->arch.got_offset;
 	for (i = 0; got[i].addr; i++)
 		if (got[i].addr == value)
 			goto out;
@@ -415,7 +437,7 @@ static Elf64_Word get_got(struct module 
 #ifdef CONFIG_64BIT
 static Elf_Addr get_fdesc(struct module *me, unsigned long value)
 {
-	Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
+	Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset;
 
 	if (!value) {
 		printk(KERN_ERR "%s: zero OPD requested!\n", me->name);
@@ -433,7 +455,7 @@ static Elf_Addr get_fdesc(struct module 
 
 	/* Create new one */
 	fdesc->addr = value;
-	fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+	fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
 	return (Elf_Addr)fdesc;
 }
 #endif /* CONFIG_64BIT */
@@ -845,7 +867,7 @@ register_unwind_table(struct module *me,
 
 	table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr;
 	end = table + sechdrs[me->arch.unwind_section].sh_size;
-	gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+	gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
 
 	DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n",
 	       me->arch.unwind_section, table, end, gp);
diff -NurpP --minimal linux-3.2.22/arch/parisc/kernel/syscall_table.S linux-3.2.22-g-v/arch/parisc/kernel/syscall_table.S
--- linux-3.2.22/arch/parisc/kernel/syscall_table.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/kernel/syscall_table.S	2012-07-11 20:20:45.320782785 +0200
@@ -361,7 +361,7 @@
 	ENTRY_COMP(mbind)		/* 260 */
 	ENTRY_COMP(get_mempolicy)
 	ENTRY_COMP(set_mempolicy)
-	ENTRY_SAME(ni_syscall)	/* 263: reserved for vserver */
+	ENTRY_DIFF(vserver)
 	ENTRY_SAME(add_key)
 	ENTRY_SAME(request_key)		/* 265 */
 	ENTRY_SAME(keyctl)
diff -NurpP --minimal linux-3.2.22/arch/parisc/kernel/sys_parisc.c linux-3.2.22-g-v/arch/parisc/kernel/sys_parisc.c
--- linux-3.2.22/arch/parisc/kernel/sys_parisc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/kernel/sys_parisc.c	2012-07-11 20:20:32.273950667 +0200
@@ -43,7 +43,7 @@ static unsigned long get_unshared_area(u
 		/* At this point:  (!vma || addr < vma->vm_end). */
 		if (TASK_SIZE - len < addr)
 			return -ENOMEM;
-		if (!vma || addr + len <= vma->vm_start)
+		if (check_heap_stack_gap(vma, addr, len))
 			return addr;
 		addr = vma->vm_end;
 	}
@@ -79,7 +79,7 @@ static unsigned long get_shared_area(str
 		/* At this point:  (!vma || addr < vma->vm_end). */
 		if (TASK_SIZE - len < addr)
 			return -ENOMEM;
-		if (!vma || addr + len <= vma->vm_start)
+		if (check_heap_stack_gap(vma, addr, len))
 			return addr;
 		addr = DCACHE_ALIGN(vma->vm_end - offset) + offset;
 		if (addr < vma->vm_end) /* handle wraparound */
@@ -98,7 +98,7 @@ unsigned long arch_get_unmapped_area(str
 	if (flags & MAP_FIXED)
 		return addr;
 	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
+		addr = current->mm->mmap_base;
 
 	if (filp) {
 		addr = get_shared_area(filp->f_mapping, addr, len, pgoff);
diff -NurpP --minimal linux-3.2.22/arch/parisc/kernel/traps.c linux-3.2.22-g-v/arch/parisc/kernel/traps.c
--- linux-3.2.22/arch/parisc/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/kernel/traps.c	2012-07-11 20:20:45.324116236 +0200
@@ -236,8 +236,9 @@ void die_if_kernel(char *str, struct pt_
 		if (err == 0)
 			return; /* STFU */
 
-		printk(KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
-			current->comm, task_pid_nr(current), str, err, regs->iaoq[0]);
+		printk(KERN_CRIT "%s (pid %d:#%u): %s (code %ld) at " RFMT "\n",
+			current->comm, task_pid_nr(current), current->xid,
+			str, err, regs->iaoq[0]);
 #ifdef PRINT_USER_FAULTS
 		/* XXX for debugging only */
 		show_regs(regs);
@@ -270,8 +271,8 @@ void die_if_kernel(char *str, struct pt_
 		pdc_console_restart();
 	
 	if (err)
-		printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
-			current->comm, task_pid_nr(current), str, err);
+		printk(KERN_CRIT "%s (pid %d:#%u): %s (code %ld)\n",
+			current->comm, task_pid_nr(current), current->xid, str, err);
 
 	/* Wot's wrong wif bein' racy? */
 	if (current->thread.flags & PARISC_KERNEL_DEATH) {
@@ -733,9 +734,7 @@ void notrace handle_interruption(int cod
 
 			down_read(&current->mm->mmap_sem);
 			vma = find_vma(current->mm,regs->iaoq[0]);
-			if (vma && (regs->iaoq[0] >= vma->vm_start)
-				&& (vma->vm_flags & VM_EXEC)) {
-
+			if (vma && (regs->iaoq[0] >= vma->vm_start)) {
 				fault_address = regs->iaoq[0];
 				fault_space = regs->iasq[0];
 
diff -NurpP --minimal linux-3.2.22/arch/parisc/mm/fault.c linux-3.2.22-g-v/arch/parisc/mm/fault.c
--- linux-3.2.22/arch/parisc/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/parisc/mm/fault.c	2012-07-11 20:20:45.324116236 +0200
@@ -15,6 +15,7 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/unistd.h>
 
 #include <asm/uaccess.h>
 #include <asm/traps.h>
@@ -52,7 +53,7 @@ DEFINE_PER_CPU(struct exception_data, ex
 static unsigned long
 parisc_acctyp(unsigned long code, unsigned int inst)
 {
-	if (code == 6 || code == 16)
+	if (code == 6 || code == 7 || code == 16)
 	    return VM_EXEC;
 
 	switch (inst & 0xf0000000) {
@@ -138,6 +139,116 @@ parisc_acctyp(unsigned long code, unsign
 			}
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when rt_sigreturn trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: unpatched PLT emulation */
+		unsigned int bl, depwi;
+
+		err = get_user(bl, (unsigned int *)instruction_pointer(regs));
+		err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4));
+
+		if (err)
+			break;
+
+		if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) {
+			unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12;
+
+			err = get_user(ldw, (unsigned int *)addr);
+			err |= get_user(bv, (unsigned int *)(addr+4));
+			err |= get_user(ldw2, (unsigned int *)(addr+8));
+
+			if (err)
+				break;
+
+			if (ldw == 0x0E801096U &&
+			    bv == 0xEAC0C000U &&
+			    ldw2 == 0x0E881095U)
+			{
+				unsigned int resolver, map;
+
+				err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8));
+				err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12));
+				if (err)
+					break;
+
+				regs->gr[20] = instruction_pointer(regs)+8;
+				regs->gr[21] = map;
+				regs->gr[22] = resolver;
+				regs->iaoq[0] = resolver | 3UL;
+				regs->iaoq[1] = regs->iaoq[0] + 4;
+				return 3;
+			}
+		}
+	} while (0);
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+
+#ifndef CONFIG_PAX_EMUSIGRT
+	if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
+		return 1;
+#endif
+
+	do { /* PaX: rt_sigreturn emulation */
+		unsigned int ldi1, ldi2, bel, nop;
+
+		err = get_user(ldi1, (unsigned int *)instruction_pointer(regs));
+		err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4));
+		err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8));
+		err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12));
+
+		if (err)
+			break;
+
+		if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) &&
+		    ldi2 == 0x3414015AU &&
+		    bel == 0xE4008200U &&
+		    nop == 0x08000240U)
+		{
+			regs->gr[25] = (ldi1 & 2) >> 1;
+			regs->gr[20] = __NR_rt_sigreturn;
+			regs->gr[31] = regs->iaoq[1] + 16;
+			regs->sr[0] = regs->iasq[1];
+			regs->iaoq[0] = 0x100UL;
+			regs->iaoq[1] = regs->iaoq[0] + 4;
+			regs->iasq[0] = regs->sr[2];
+			regs->iasq[1] = regs->sr[2];
+			return 2;
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 int fixup_exception(struct pt_regs *regs)
 {
 	const struct exception_table_entry *fix;
@@ -192,8 +303,33 @@ good_area:
 
 	acc_type = parisc_acctyp(code,regs->iir);
 
-	if ((vma->vm_flags & acc_type) != acc_type)
+	if ((vma->vm_flags & acc_type) != acc_type) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) &&
+		    (address & ~3UL) == instruction_pointer(regs))
+		{
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 3:
+				return;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+			case 2:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		goto bad_area;
+	}
 
 	/*
 	 * If for any reason at all we couldn't handle the fault, make
@@ -237,8 +373,9 @@ bad_area:
 
 #ifdef PRINT_USER_FAULTS
 		printk(KERN_DEBUG "\n");
-		printk(KERN_DEBUG "do_page_fault() pid=%d command='%s' type=%lu address=0x%08lx\n",
-		    task_pid_nr(tsk), tsk->comm, code, address);
+		printk(KERN_DEBUG "do_page_fault() pid=%d:#%u "
+		    "command='%s' type=%lu address=0x%08lx\n",
+		    task_pid_nr(tsk), tsk->xid, tsk->comm, code, address);
 		if (vma) {
 			printk(KERN_DEBUG "vm_start = 0x%08lx, vm_end = 0x%08lx\n",
 					vma->vm_start, vma->vm_end);
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/atomic.h linux-3.2.22-g-v/arch/powerpc/include/asm/atomic.h
--- linux-3.2.22/arch/powerpc/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/atomic.h	2012-07-11 20:20:32.277319776 +0200
@@ -469,6 +469,16 @@ static __inline__ int atomic64_add_unles
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* __powerpc64__ */
 
 #endif /* __KERNEL__ */
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/cache.h linux-3.2.22-g-v/arch/powerpc/include/asm/cache.h
--- linux-3.2.22/arch/powerpc/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/cache.h	2012-07-11 20:20:32.277319776 +0200
@@ -3,6 +3,7 @@
 
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 
 /* bytes per L1 cache line */
 #if defined(CONFIG_8xx) || defined(CONFIG_403GCX)
@@ -22,7 +23,7 @@
 #define L1_CACHE_SHIFT		7
 #endif
 
-#define	L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define	L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define	SMP_CACHE_BYTES		L1_CACHE_BYTES
 
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/elf.h linux-3.2.22-g-v/arch/powerpc/include/asm/elf.h
--- linux-3.2.22/arch/powerpc/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/elf.h	2012-07-11 20:20:32.277319776 +0200
@@ -178,8 +178,19 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[E
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-extern unsigned long randomize_et_dyn(unsigned long base);
-#define ELF_ET_DYN_BASE		(randomize_et_dyn(0x20000000))
+#define ELF_ET_DYN_BASE		(0x20000000)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(0x10000000UL)
+
+#ifdef __powerpc64__
+#define PAX_DELTA_MMAP_LEN	(is_32bit_task() ? 16 : 28)
+#define PAX_DELTA_STACK_LEN	(is_32bit_task() ? 16 : 28)
+#else
+#define PAX_DELTA_MMAP_LEN	15
+#define PAX_DELTA_STACK_LEN	15
+#endif
+#endif
 
 /*
  * Our registers are always unsigned longs, whether we're a 32 bit
@@ -274,9 +285,6 @@ extern int arch_setup_additional_pages(s
 	(0x7ff >> (PAGE_SHIFT - 12)) : \
 	(0x3ffff >> (PAGE_SHIFT - 12)))
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 #endif /* __KERNEL__ */
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/kmap_types.h linux-3.2.22-g-v/arch/powerpc/include/asm/kmap_types.h
--- linux-3.2.22/arch/powerpc/include/asm/kmap_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/kmap_types.h	2012-07-11 20:20:32.277319776 +0200
@@ -27,6 +27,7 @@ enum km_type {
 	KM_PPC_SYNC_PAGE,
 	KM_PPC_SYNC_ICACHE,
 	KM_KDB,
+	KM_CLEARPAGE,
 	KM_TYPE_NR
 };
 
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/mman.h linux-3.2.22-g-v/arch/powerpc/include/asm/mman.h
--- linux-3.2.22/arch/powerpc/include/asm/mman.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/mman.h	2012-07-11 20:20:32.277319776 +0200
@@ -44,7 +44,7 @@ static inline unsigned long arch_calc_vm
 }
 #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
 
-static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
+static inline pgprot_t arch_vm_get_page_prot(vm_flags_t vm_flags)
 {
 	return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
 }
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/page_64.h linux-3.2.22-g-v/arch/powerpc/include/asm/page_64.h
--- linux-3.2.22/arch/powerpc/include/asm/page_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/page_64.h	2012-07-11 20:20:32.280625530 +0200
@@ -144,15 +144,18 @@ do {						\
  * stack by default, so in the absence of a PT_GNU_STACK program header
  * we turn execute permission off.
  */
-#define VM_STACK_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_STACK_DEFAULT_FLAGS32 \
+	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
+	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #define VM_STACK_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
 					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
+#ifndef CONFIG_PAX_PAGEEXEC
 #define VM_STACK_DEFAULT_FLAGS \
 	(is_32bit_task() ? \
 	 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
+#endif
 
 #include <asm-generic/getorder.h>
 
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/page.h linux-3.2.22-g-v/arch/powerpc/include/asm/page.h
--- linux-3.2.22/arch/powerpc/include/asm/page.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/page.h	2012-07-11 20:20:32.277319776 +0200
@@ -141,8 +141,9 @@ extern phys_addr_t kernstart_addr;
  * and needs to be executable.  This means the whole heap ends
  * up being executable.
  */
-#define VM_DATA_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS32 \
+	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
+	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #define VM_DATA_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
@@ -170,6 +171,9 @@ extern phys_addr_t kernstart_addr;
 #define is_kernel_addr(x)	((x) >= PAGE_OFFSET)
 #endif
 
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 /*
  * Use the top bit of the higher-level page table entries to indicate whether
  * the entries we point to contain hugepages.  This works because we know that
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/pgalloc-64.h linux-3.2.22-g-v/arch/powerpc/include/asm/pgalloc-64.h
--- linux-3.2.22/arch/powerpc/include/asm/pgalloc-64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/pgalloc-64.h	2012-07-11 20:20:32.280625530 +0200
@@ -50,6 +50,7 @@ static inline void pgd_free(struct mm_st
 #ifndef CONFIG_PPC_64K_PAGES
 
 #define pgd_populate(MM, PGD, PUD)	pgd_set(PGD, PUD)
+#define pgd_populate_kernel(MM, PGD, PUD)	pgd_populate((MM), (PGD), (PUD))
 
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
@@ -67,6 +68,11 @@ static inline void pud_populate(struct m
 	pud_set(pud, (unsigned long)pmd);
 }
 
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_populate(mm, pud, pmd);
+}
+
 #define pmd_populate(mm, pmd, pte_page) \
 	pmd_populate_kernel(mm, pmd, page_address(pte_page))
 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte))
@@ -76,6 +82,7 @@ static inline void pud_populate(struct m
 #else /* CONFIG_PPC_64K_PAGES */
 
 #define pud_populate(mm, pud, pmd)	pud_set(pud, (unsigned long)pmd)
+#define pud_populate_kernel(mm, pud, pmd)	pud_populate((mm), (pud), (pmd))
 
 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
 				       pte_t *pte)
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/pgtable.h linux-3.2.22-g-v/arch/powerpc/include/asm/pgtable.h
--- linux-3.2.22/arch/powerpc/include/asm/pgtable.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/pgtable.h	2012-07-11 20:20:32.280625530 +0200
@@ -2,6 +2,7 @@
 #define _ASM_POWERPC_PGTABLE_H
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 #ifndef __ASSEMBLY__
 #include <asm/processor.h>		/* For TASK_SIZE */
 #include <asm/mmu.h>
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/pte-hash32.h linux-3.2.22-g-v/arch/powerpc/include/asm/pte-hash32.h
--- linux-3.2.22/arch/powerpc/include/asm/pte-hash32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/pte-hash32.h	2012-07-11 20:20:32.280625530 +0200
@@ -21,6 +21,7 @@
 #define _PAGE_FILE	0x004	/* when !present: nonlinear file mapping */
 #define _PAGE_USER	0x004	/* usermode access allowed */
 #define _PAGE_GUARDED	0x008	/* G: prohibit speculative access */
+#define _PAGE_EXEC	_PAGE_GUARDED
 #define _PAGE_COHERENT	0x010	/* M: enforce memory coherence (SMP systems) */
 #define _PAGE_NO_CACHE	0x020	/* I: cache inhibit */
 #define _PAGE_WRITETHRU	0x040	/* W: cache write-through */
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/reg.h linux-3.2.22-g-v/arch/powerpc/include/asm/reg.h
--- linux-3.2.22/arch/powerpc/include/asm/reg.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/reg.h	2012-07-11 20:20:32.280625530 +0200
@@ -212,6 +212,7 @@
 #define SPRN_DBCR	0x136	/* e300 Data Breakpoint Control Reg */
 #define SPRN_DSISR	0x012	/* Data Storage Interrupt Status Register */
 #define   DSISR_NOHPTE		0x40000000	/* no translation found */
+#define   DSISR_GUARDED		0x10000000	/* fetch from guarded storage */
 #define   DSISR_PROTFAULT	0x08000000	/* protection fault */
 #define   DSISR_ISSTORE		0x02000000	/* access was a store */
 #define   DSISR_DABRMATCH	0x00400000	/* hit data breakpoint */
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/system.h linux-3.2.22-g-v/arch/powerpc/include/asm/system.h
--- linux-3.2.22/arch/powerpc/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/system.h	2012-07-11 20:20:32.280625530 +0200
@@ -530,7 +530,7 @@ __cmpxchg_local(volatile void *ptr, unsi
 #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
 #endif
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 /* Used in very early kernel initialization. */
 extern unsigned long reloc_offset(void);
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/thread_info.h linux-3.2.22-g-v/arch/powerpc/include/asm/thread_info.h
--- linux-3.2.22/arch/powerpc/include/asm/thread_info.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/thread_info.h	2012-07-11 20:20:32.280625530 +0200
@@ -104,7 +104,6 @@ static inline struct thread_info *curren
 #define TIF_PERFMON_CTXSW	6	/* perfmon needs ctxsw calls */
 #define TIF_SYSCALL_AUDIT	7	/* syscall auditing active */
 #define TIF_SINGLESTEP		8	/* singlestepping active */
-#define TIF_MEMDIE		9	/* is terminating due to OOM killer */
 #define TIF_SECCOMP		10	/* secure computing */
 #define TIF_RESTOREALL		11	/* Restore all regs (implies NOERROR) */
 #define TIF_NOERROR		12	/* Force successful syscall return */
@@ -112,6 +111,9 @@ static inline struct thread_info *curren
 #define TIF_FREEZE		14	/* Freezing for suspend */
 #define TIF_SYSCALL_TRACEPOINT	15	/* syscall tracepoint instrumentation */
 #define TIF_RUNLATCH		16	/* Is the runlatch enabled? */
+#define TIF_MEMDIE		17	/* is terminating due to OOM killer */
+/* mask must be expressable within 16 bits to satisfy 'andi' instruction reqs */
+#define TIF_GRSEC_SETXID	9	/* update credentials on syscall entry/exit */
 
 /* as above, but as bit values */
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
@@ -130,8 +132,11 @@ static inline struct thread_info *curren
 #define _TIF_FREEZE		(1<<TIF_FREEZE)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
 #define _TIF_RUNLATCH		(1<<TIF_RUNLATCH)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
+
 #define _TIF_SYSCALL_T_OR_A	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
-				 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT)
+				 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT \
+				 _TIF_GRSEC_SETXID)
 
 #define _TIF_USER_WORK_MASK	(_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
 				 _TIF_NOTIFY_RESUME)
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/uaccess.h linux-3.2.22-g-v/arch/powerpc/include/asm/uaccess.h
--- linux-3.2.22/arch/powerpc/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/uaccess.h	2012-07-11 20:20:32.283930701 +0200
@@ -13,6 +13,8 @@
 #define VERIFY_READ	0
 #define VERIFY_WRITE	1
 
+extern void check_object_size(const void *ptr, unsigned long n, bool to);
+
 /*
  * The fs value determines whether argument validity checking should be
  * performed or not.  If get_fs() == USER_DS, checking is performed, with
@@ -327,52 +329,6 @@ do {								\
 extern unsigned long __copy_tofrom_user(void __user *to,
 		const void __user *from, unsigned long size);
 
-#ifndef __powerpc64__
-
-static inline unsigned long copy_from_user(void *to,
-		const void __user *from, unsigned long n)
-{
-	unsigned long over;
-
-	if (access_ok(VERIFY_READ, from, n))
-		return __copy_tofrom_user((__force void __user *)to, from, n);
-	if ((unsigned long)from < TASK_SIZE) {
-		over = (unsigned long)from + n - TASK_SIZE;
-		return __copy_tofrom_user((__force void __user *)to, from,
-				n - over) + over;
-	}
-	return n;
-}
-
-static inline unsigned long copy_to_user(void __user *to,
-		const void *from, unsigned long n)
-{
-	unsigned long over;
-
-	if (access_ok(VERIFY_WRITE, to, n))
-		return __copy_tofrom_user(to, (__force void __user *)from, n);
-	if ((unsigned long)to < TASK_SIZE) {
-		over = (unsigned long)to + n - TASK_SIZE;
-		return __copy_tofrom_user(to, (__force void __user *)from,
-				n - over) + over;
-	}
-	return n;
-}
-
-#else /* __powerpc64__ */
-
-#define __copy_in_user(to, from, size) \
-	__copy_tofrom_user((to), (from), (size))
-
-extern unsigned long copy_from_user(void *to, const void __user *from,
-				    unsigned long n);
-extern unsigned long copy_to_user(void __user *to, const void *from,
-				  unsigned long n);
-extern unsigned long copy_in_user(void __user *to, const void __user *from,
-				  unsigned long n);
-
-#endif /* __powerpc64__ */
-
 static inline unsigned long __copy_from_user_inatomic(void *to,
 		const void __user *from, unsigned long n)
 {
@@ -396,6 +352,10 @@ static inline unsigned long __copy_from_
 		if (ret == 0)
 			return 0;
 	}
+
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
+
 	return __copy_tofrom_user((__force void __user *)to, from, n);
 }
 
@@ -422,6 +382,10 @@ static inline unsigned long __copy_to_us
 		if (ret == 0)
 			return 0;
 	}
+
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
+
 	return __copy_tofrom_user(to, (__force const void __user *)from, n);
 }
 
@@ -439,6 +403,92 @@ static inline unsigned long __copy_to_us
 	return __copy_to_user_inatomic(to, from, size);
 }
 
+#ifndef __powerpc64__
+
+static inline unsigned long __must_check copy_from_user(void *to,
+		const void __user *from, unsigned long n)
+{
+	unsigned long over;
+
+	if ((long)n < 0)
+		return n;
+
+	if (access_ok(VERIFY_READ, from, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
+		return __copy_tofrom_user((__force void __user *)to, from, n);
+	}
+	if ((unsigned long)from < TASK_SIZE) {
+		over = (unsigned long)from + n - TASK_SIZE;
+		if (!__builtin_constant_p(n - over))
+			check_object_size(to, n - over, false);
+		return __copy_tofrom_user((__force void __user *)to, from,
+				n - over) + over;
+	}
+	return n;
+}
+
+static inline unsigned long __must_check copy_to_user(void __user *to,
+		const void *from, unsigned long n)
+{
+	unsigned long over;
+
+	if ((long)n < 0)
+		return n;
+
+	if (access_ok(VERIFY_WRITE, to, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
+		return __copy_tofrom_user(to, (__force void __user *)from, n);
+	}
+	if ((unsigned long)to < TASK_SIZE) {
+		over = (unsigned long)to + n - TASK_SIZE;
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n - over, true);
+		return __copy_tofrom_user(to, (__force void __user *)from,
+				n - over) + over;
+	}
+	return n;
+}
+
+#else /* __powerpc64__ */
+
+#define __copy_in_user(to, from, size) \
+	__copy_tofrom_user((to), (from), (size))
+
+static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	if ((long)n < 0 || n > INT_MAX)
+		return n;
+
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
+
+	if (likely(access_ok(VERIFY_READ, from, n)))
+		n = __copy_from_user(to, from, n);
+	else
+		memset(to, 0, n);
+	return n;
+}
+
+static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	if ((long)n < 0 || n > INT_MAX)
+		return n;
+
+	if (likely(access_ok(VERIFY_WRITE, to, n))) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
+		n = __copy_to_user(to, from, n);
+	}
+	return n;
+}
+
+extern unsigned long copy_in_user(void __user *to, const void __user *from,
+				  unsigned long n);
+
+#endif /* __powerpc64__ */
+
 extern unsigned long __clear_user(void __user *addr, unsigned long size);
 
 static inline unsigned long clear_user(void __user *addr, unsigned long size)
diff -NurpP --minimal linux-3.2.22/arch/powerpc/include/asm/unistd.h linux-3.2.22-g-v/arch/powerpc/include/asm/unistd.h
--- linux-3.2.22/arch/powerpc/include/asm/unistd.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/include/asm/unistd.h	2012-07-11 20:20:45.324116236 +0200
@@ -275,7 +275,7 @@
 #endif
 #define __NR_rtas		255
 #define __NR_sys_debug_setcontext 256
-/* Number 257 is reserved for vserver */
+#define __NR_vserver		257
 #define __NR_migrate_pages	258
 #define __NR_mbind		259
 #define __NR_get_mempolicy	260
diff -NurpP --minimal linux-3.2.22/arch/powerpc/Kconfig linux-3.2.22-g-v/arch/powerpc/Kconfig
--- linux-3.2.22/arch/powerpc/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/Kconfig	2012-07-11 20:20:45.324116236 +0200
@@ -960,6 +960,8 @@ source "lib/Kconfig"
 
 source "arch/powerpc/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 config KEYS_COMPAT
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/exceptions-64e.S linux-3.2.22-g-v/arch/powerpc/kernel/exceptions-64e.S
--- linux-3.2.22/arch/powerpc/kernel/exceptions-64e.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/exceptions-64e.S	2012-07-11 20:20:32.283930701 +0200
@@ -587,6 +587,7 @@ storage_fault_common:
 	std	r14,_DAR(r1)
 	std	r15,_DSISR(r1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	.save_nvgprs
 	mr	r4,r14
 	mr	r5,r15
 	ld	r14,PACA_EXGEN+EX_R14(r13)
@@ -596,8 +597,7 @@ storage_fault_common:
 	cmpdi	r3,0
 	bne-	1f
 	b	.ret_from_except_lite
-1:	bl	.save_nvgprs
-	mr	r5,r3
+1:	mr	r5,r3
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	ld	r4,_DAR(r1)
 	bl	.bad_page_fault
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/exceptions-64s.S linux-3.2.22-g-v/arch/powerpc/kernel/exceptions-64s.S
--- linux-3.2.22/arch/powerpc/kernel/exceptions-64s.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/exceptions-64s.S	2012-07-11 20:20:32.283930701 +0200
@@ -1004,10 +1004,10 @@ handle_page_fault:
 11:	ld	r4,_DAR(r1)
 	ld	r5,_DSISR(r1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	.save_nvgprs
 	bl	.do_page_fault
 	cmpdi	r3,0
 	beq+	13f
-	bl	.save_nvgprs
 	mr	r5,r3
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	lwz	r4,_DAR(r1)
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/irq.c linux-3.2.22-g-v/arch/powerpc/kernel/irq.c
--- linux-3.2.22/arch/powerpc/kernel/irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/irq.c	2012-07-11 20:20:32.283930701 +0200
@@ -547,9 +547,6 @@ struct irq_host *irq_alloc_host(struct d
 	host->ops = ops;
 	host->of_node = of_node_get(of_node);
 
-	if (host->ops->match == NULL)
-		host->ops->match = default_irq_host_match;
-
 	raw_spin_lock_irqsave(&irq_big_lock, flags);
 
 	/* If it's a legacy controller, check for duplicates and
@@ -622,7 +619,12 @@ struct irq_host *irq_find_host(struct de
 	 */
 	raw_spin_lock_irqsave(&irq_big_lock, flags);
 	list_for_each_entry(h, &irq_hosts, link)
-		if (h->ops->match(h, node)) {
+		if (h->ops->match) {
+			if (h->ops->match(h, node)) {
+				found = h;
+				break;
+			}
+		} else if (default_irq_host_match(h, node)) {
 			found = h;
 			break;
 		}
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/module_32.c linux-3.2.22-g-v/arch/powerpc/kernel/module_32.c
--- linux-3.2.22/arch/powerpc/kernel/module_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/module_32.c	2012-07-11 20:20:32.283930701 +0200
@@ -162,7 +162,7 @@ int module_frob_arch_sections(Elf32_Ehdr
 			me->arch.core_plt_section = i;
 	}
 	if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
-		printk("Module doesn't contain .plt or .init.plt sections.\n");
+		printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name);
 		return -ENOEXEC;
 	}
 
@@ -192,11 +192,16 @@ static uint32_t do_plt_call(void *locati
 
 	DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
 	/* Init, or core PLT? */
-	if (location >= mod->module_core
-	    && location < mod->module_core + mod->core_size)
+	if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) ||
+	    (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw))
 		entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
-	else
+	else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) ||
+		 (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw))
 		entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
+	else {
+		printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name);
+		return ~0UL;
+	}
 
 	/* Find this entry, or if that fails, the next avail. entry */
 	while (entry->jump[0]) {
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/process.c linux-3.2.22-g-v/arch/powerpc/kernel/process.c
--- linux-3.2.22/arch/powerpc/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/process.c	2012-07-11 20:20:45.324116236 +0200
@@ -640,8 +640,9 @@ void show_regs(struct pt_regs * regs)
 #else
 		printk("DAR: "REG", DSISR: %08lx\n", regs->dar, regs->dsisr);
 #endif
-	printk("TASK = %p[%d] '%s' THREAD: %p",
-	       current, task_pid_nr(current), current->comm, task_thread_info(current));
+	printk("TASK = %p[%d,#%u] '%s' THREAD: %p",
+	       current, task_pid_nr(current), current->xid,
+	       current->comm, task_thread_info(current));
 
 #ifdef CONFIG_SMP
 	printk(" CPU: %d", raw_smp_processor_id());
@@ -660,8 +661,8 @@ void show_regs(struct pt_regs * regs)
 	 * Lookup NIP late so we have the best change of getting the
 	 * above info out without failing
 	 */
-	printk("NIP ["REG"] %pS\n", regs->nip, (void *)regs->nip);
-	printk("LR ["REG"] %pS\n", regs->link, (void *)regs->link);
+	printk("NIP ["REG"] %pA\n", regs->nip, (void *)regs->nip);
+	printk("LR ["REG"] %pA\n", regs->link, (void *)regs->link);
 #endif
 	show_stack(current, (unsigned long *) regs->gpr[1]);
 	if (!user_mode(regs))
@@ -1165,10 +1166,10 @@ void show_stack(struct task_struct *tsk,
 		newsp = stack[0];
 		ip = stack[STACK_FRAME_LR_SAVE];
 		if (!firstframe || ip != lr) {
-			printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip);
+			printk("["REG"] ["REG"] %pA", sp, ip, (void *)ip);
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 			if ((ip == rth || ip == mrth) && curr_frame >= 0) {
-				printk(" (%pS)",
+				printk(" (%pA)",
 				       (void *)current->ret_stack[curr_frame].ret);
 				curr_frame--;
 			}
@@ -1188,7 +1189,7 @@ void show_stack(struct task_struct *tsk,
 			struct pt_regs *regs = (struct pt_regs *)
 				(sp + STACK_FRAME_OVERHEAD);
 			lr = regs->link;
-			printk("--- Exception: %lx at %pS\n    LR = %pS\n",
+			printk("--- Exception: %lx at %pA\n    LR = %pA\n",
 			       regs->trap, (void *)regs->nip, (void *)lr);
 			firstframe = 1;
 		}
@@ -1263,58 +1264,3 @@ void thread_info_cache_init(void)
 }
 
 #endif /* THREAD_SHIFT < PAGE_SHIFT */
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-	return sp & ~0xf;
-}
-
-static inline unsigned long brk_rnd(void)
-{
-        unsigned long rnd = 0;
-
-	/* 8MB for 32bit, 1GB for 64bit */
-	if (is_32bit_task())
-		rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
-	else
-		rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
-
-	return rnd << PAGE_SHIFT;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long base = mm->brk;
-	unsigned long ret;
-
-#ifdef CONFIG_PPC_STD_MMU_64
-	/*
-	 * If we are using 1TB segments and we are allowed to randomise
-	 * the heap, we can put it above 1TB so it is backed by a 1TB
-	 * segment. Otherwise the heap will be in the bottom 1TB
-	 * which always uses 256MB segments and this may result in a
-	 * performance penalty.
-	 */
-	if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T))
-		base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T);
-#endif
-
-	ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < mm->brk)
-		return mm->brk;
-
-	return ret;
-}
-
-unsigned long randomize_et_dyn(unsigned long base)
-{
-	unsigned long ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < base)
-		return base;
-
-	return ret;
-}
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/ptrace.c linux-3.2.22-g-v/arch/powerpc/kernel/ptrace.c
--- linux-3.2.22/arch/powerpc/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/ptrace.c	2012-07-11 20:20:32.287266682 +0200
@@ -1702,6 +1702,10 @@ long arch_ptrace(struct task_struct *chi
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * We must return the syscall number to actually look up in the table.
  * This can be -1L to skip running any syscall at all.
@@ -1712,6 +1716,11 @@ long do_syscall_trace_enter(struct pt_re
 
 	secure_computing(regs->gpr[0]);
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
 	    tracehook_report_syscall_entry(regs))
 		/*
@@ -1748,6 +1757,11 @@ void do_syscall_trace_leave(struct pt_re
 {
 	int step;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (unlikely(current->audit_context))
 		audit_syscall_exit((regs->ccr&0x10000000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
 				   regs->result);
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/signal_32.c linux-3.2.22-g-v/arch/powerpc/kernel/signal_32.c
--- linux-3.2.22/arch/powerpc/kernel/signal_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/signal_32.c	2012-07-11 20:20:32.287266682 +0200
@@ -859,7 +859,7 @@ int handle_rt_signal32(unsigned long sig
 	/* Save user registers on the stack */
 	frame = &rt_sf->uc.uc_mcontext;
 	addr = frame;
-	if (vdso32_rt_sigtramp && current->mm->context.vdso_base) {
+	if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
 		if (save_user_regs(regs, frame, 0, 1))
 			goto badframe;
 		regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp;
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/signal_64.c linux-3.2.22-g-v/arch/powerpc/kernel/signal_64.c
--- linux-3.2.22/arch/powerpc/kernel/signal_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/signal_64.c	2012-07-11 20:20:32.287266682 +0200
@@ -429,7 +429,7 @@ int handle_rt_signal64(int signr, struct
 	current->thread.fpscr.val = 0;
 
 	/* Set up to return from userspace. */
-	if (vdso64_rt_sigtramp && current->mm->context.vdso_base) {
+	if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
 		regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp;
 	} else {
 		err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/traps.c linux-3.2.22-g-v/arch/powerpc/kernel/traps.c
--- linux-3.2.22/arch/powerpc/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/traps.c	2012-07-11 20:20:45.327402372 +0200
@@ -98,6 +98,8 @@ static void pmac_backlight_unblank(void)
 static inline void pmac_backlight_unblank(void) { }
 #endif
 
+extern void gr_handle_kernel_exploit(void);
+
 int die(const char *str, struct pt_regs *regs, long err)
 {
 	static struct {
@@ -171,6 +173,8 @@ int die(const char *str, struct pt_regs 
 	if (panic_on_oops)
 		panic("Fatal exception");
 
+	gr_handle_kernel_exploit();
+
 	oops_exit();
 	do_exit(err);
 
@@ -1082,8 +1086,9 @@ void nonrecoverable_exception(struct pt_
 
 void trace_syscall(struct pt_regs *regs)
 {
-	printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
-	       current, task_pid_nr(current), regs->nip, regs->link, regs->gpr[0],
+	printk("Task: %p(%d[#%u]), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
+	       current, task_pid_nr(current), current->xid,
+	       regs->nip, regs->link, regs->gpr[0],
 	       regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
 }
 
diff -NurpP --minimal linux-3.2.22/arch/powerpc/kernel/vdso.c linux-3.2.22-g-v/arch/powerpc/kernel/vdso.c
--- linux-3.2.22/arch/powerpc/kernel/vdso.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/kernel/vdso.c	2012-07-11 20:20:32.290716381 +0200
@@ -35,6 +35,7 @@
 #include <asm/firmware.h>
 #include <asm/vdso.h>
 #include <asm/vdso_datapage.h>
+#include <asm/mman.h>
 
 #include "setup.h"
 
@@ -219,7 +220,7 @@ int arch_setup_additional_pages(struct l
 	vdso_base = VDSO32_MBASE;
 #endif
 
-	current->mm->context.vdso_base = 0;
+	current->mm->context.vdso_base = ~0UL;
 
 	/* vDSO has a problem and was disabled, just don't "enable" it for the
 	 * process
@@ -239,7 +240,7 @@ int arch_setup_additional_pages(struct l
 	vdso_base = get_unmapped_area(NULL, vdso_base,
 				      (vdso_pages << PAGE_SHIFT) +
 				      ((VDSO_ALIGNMENT - 1) & PAGE_MASK),
-				      0, 0);
+				      0, MAP_PRIVATE | MAP_EXECUTABLE);
 	if (IS_ERR_VALUE(vdso_base)) {
 		rc = vdso_base;
 		goto fail_mmapsem;
diff -NurpP --minimal linux-3.2.22/arch/powerpc/lib/usercopy_64.c linux-3.2.22-g-v/arch/powerpc/lib/usercopy_64.c
--- linux-3.2.22/arch/powerpc/lib/usercopy_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/lib/usercopy_64.c	2012-07-11 20:20:32.290716381 +0200
@@ -9,22 +9,6 @@
 #include <linux/module.h>
 #include <asm/uaccess.h>
 
-unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_READ, from, n)))
-		n = __copy_from_user(to, from, n);
-	else
-		memset(to, 0, n);
-	return n;
-}
-
-unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_WRITE, to, n)))
-		n = __copy_to_user(to, from, n);
-	return n;
-}
-
 unsigned long copy_in_user(void __user *to, const void __user *from,
 			   unsigned long n)
 {
@@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user *
 	return n;
 }
 
-EXPORT_SYMBOL(copy_from_user);
-EXPORT_SYMBOL(copy_to_user);
 EXPORT_SYMBOL(copy_in_user);
 
diff -NurpP --minimal linux-3.2.22/arch/powerpc/mm/fault.c linux-3.2.22-g-v/arch/powerpc/mm/fault.c
--- linux-3.2.22/arch/powerpc/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/mm/fault.c	2012-07-11 20:20:32.290716381 +0200
@@ -32,6 +32,10 @@
 #include <linux/perf_event.h>
 #include <linux/magic.h>
 #include <linux/ratelimit.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
+#include <linux/unistd.h>
 
 #include <asm/firmware.h>
 #include <asm/page.h>
@@ -43,6 +47,7 @@
 #include <asm/tlbflush.h>
 #include <asm/siginfo.h>
 #include <mm/mmu_decl.h>
+#include <asm/ptrace.h>
 
 #ifdef CONFIG_KPROBES
 static inline int notify_page_fault(struct pt_regs *regs)
@@ -66,6 +71,33 @@ static inline int notify_page_fault(stru
 }
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (regs->nip = fault address)
+ *
+ * returns 1 when task should be killed
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int __user *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * Check whether the instruction at regs->nip is a store using
  * an update addressing form which will update r1.
@@ -136,7 +168,7 @@ int __kprobes do_page_fault(struct pt_re
 	 * indicate errors in DSISR but can validly be set in SRR1.
 	 */
 	if (trap == 0x400)
-		error_code &= 0x48200000;
+		error_code &= 0x58200000;
 	else
 		is_write = error_code & DSISR_ISSTORE;
 #else
@@ -259,7 +291,7 @@ good_area:
          * "undefined".  Of those that can be set, this is the only
          * one which seems bad.
          */
-	if (error_code & 0x10000000)
+	if (error_code & DSISR_GUARDED)
                 /* Guarded storage error. */
 		goto bad_area;
 #endif /* CONFIG_8xx */
@@ -274,7 +306,7 @@ good_area:
 		 * processors use the same I/D cache coherency mechanism
 		 * as embedded.
 		 */
-		if (error_code & DSISR_PROTFAULT)
+		if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))
 			goto bad_area;
 #endif /* CONFIG_PPC_STD_MMU */
 
@@ -343,6 +375,23 @@ bad_area:
 bad_area_nosemaphore:
 	/* User mode accesses cause a SIGSEGV */
 	if (user_mode(regs)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+#ifdef CONFIG_PPC_STD_MMU
+			if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) {
+#else
+			if (is_exec && regs->nip == address) {
+#endif
+				switch (pax_handle_fetch_fault(regs)) {
+				}
+
+				pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]);
+				do_group_exit(SIGKILL);
+			}
+		}
+#endif
+
 		_exception(SIGSEGV, regs, code, address);
 		return 0;
 	}
diff -NurpP --minimal linux-3.2.22/arch/powerpc/mm/mmap_64.c linux-3.2.22-g-v/arch/powerpc/mm/mmap_64.c
--- linux-3.2.22/arch/powerpc/mm/mmap_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/mm/mmap_64.c	2012-07-11 20:20:32.290716381 +0200
@@ -99,10 +99,22 @@ void arch_pick_mmap_layout(struct mm_str
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 		mm->unmap_area = arch_unmap_area;
 	} else {
 		mm->mmap_base = mmap_base();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
diff -NurpP --minimal linux-3.2.22/arch/powerpc/mm/slice.c linux-3.2.22-g-v/arch/powerpc/mm/slice.c
--- linux-3.2.22/arch/powerpc/mm/slice.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/powerpc/mm/slice.c	2012-07-11 20:20:32.294119006 +0200
@@ -98,7 +98,7 @@ static int slice_area_is_free(struct mm_
 	if ((mm->task_size - len) < addr)
 		return 0;
 	vma = find_vma(mm, addr);
-	return (!vma || (addr + len) <= vma->vm_start);
+	return check_heap_stack_gap(vma, addr, len);
 }
 
 static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice)
@@ -256,7 +256,7 @@ full_search:
 				addr = _ALIGN_UP(addr + 1,  1ul << SLICE_HIGH_SHIFT);
 			continue;
 		}
-		if (!vma || addr + len <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
@@ -313,10 +313,14 @@ static unsigned long slice_find_area_top
 		}
 	}
 
-	addr = mm->mmap_base;
-	while (addr > len) {
+	if (mm->mmap_base < len)
+		addr = -ENOMEM;
+	else
+		addr = mm->mmap_base - len;
+
+	while (!IS_ERR_VALUE(addr)) {
 		/* Go down by chunk size */
-		addr = _ALIGN_DOWN(addr - len, 1ul << pshift);
+		addr = _ALIGN_DOWN(addr, 1ul << pshift);
 
 		/* Check for hit with different page size */
 		mask = slice_range_to_mask(addr, len);
@@ -336,7 +340,7 @@ static unsigned long slice_find_area_top
 		 * return with success:
 		 */
 		vma = find_vma(mm, addr);
-		if (!vma || (addr + len) <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/* remember the address as a hint for next time */
 			if (use_cache)
 				mm->free_area_cache = addr;
@@ -348,7 +352,7 @@ static unsigned long slice_find_area_top
 		        mm->cached_hole_size = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = vma->vm_start;
+		addr = skip_heap_stack_gap(vma, len);
 	}
 
 	/*
@@ -426,6 +430,11 @@ unsigned long slice_get_unmapped_area(un
 	if (fixed && addr > (mm->task_size - len))
 		return -EINVAL;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP))
+		addr = 0;
+#endif
+
 	/* If hint, make sure it matches our alignment restrictions */
 	if (!fixed && addr) {
 		addr = _ALIGN_UP(addr, 1ul << pshift);
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/atomic.h linux-3.2.22-g-v/arch/s390/include/asm/atomic.h
--- linux-3.2.22/arch/s390/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/atomic.h	2012-07-11 20:20:32.294119006 +0200
@@ -326,6 +326,16 @@ static inline long long atomic64_dec_if_
 #define atomic64_dec_and_test(_v)	(atomic64_sub_return(1, _v) == 0)
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #define smp_mb__before_atomic_dec()	smp_mb()
 #define smp_mb__after_atomic_dec()	smp_mb()
 #define smp_mb__before_atomic_inc()	smp_mb()
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/cache.h linux-3.2.22-g-v/arch/s390/include/asm/cache.h
--- linux-3.2.22/arch/s390/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/cache.h	2012-07-11 20:20:32.294119006 +0200
@@ -11,8 +11,10 @@
 #ifndef __ARCH_S390_CACHE_H
 #define __ARCH_S390_CACHE_H
 
-#define L1_CACHE_BYTES     256
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT     8
+#define L1_CACHE_BYTES     (_AC(1,UL) << L1_CACHE_SHIFT)
 #define NET_SKB_PAD	   32
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/elf.h linux-3.2.22-g-v/arch/s390/include/asm/elf.h
--- linux-3.2.22/arch/s390/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/elf.h	2012-07-11 20:20:32.294119006 +0200
@@ -162,8 +162,14 @@ extern unsigned int vdso_enabled;
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-extern unsigned long randomize_et_dyn(unsigned long base);
-#define ELF_ET_DYN_BASE		(randomize_et_dyn(STACK_TOP / 3 * 2))
+#define ELF_ET_DYN_BASE		(STACK_TOP / 3 * 2)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(test_thread_flag(TIF_31BIT) ? 15 : 26)
+#define PAX_DELTA_STACK_LEN	(test_thread_flag(TIF_31BIT) ? 15 : 26)
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports. */
@@ -211,7 +217,4 @@ struct linux_binprm;
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 int arch_setup_additional_pages(struct linux_binprm *, int);
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 #endif
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/system.h linux-3.2.22-g-v/arch/s390/include/asm/system.h
--- linux-3.2.22/arch/s390/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/system.h	2012-07-11 20:20:32.294119006 +0200
@@ -262,7 +262,7 @@ extern void (*_machine_restart)(char *co
 extern void (*_machine_halt)(void);
 extern void (*_machine_power_off)(void);
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 static inline int tprot(unsigned long addr)
 {
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/tlb.h linux-3.2.22-g-v/arch/s390/include/asm/tlb.h
--- linux-3.2.22/arch/s390/include/asm/tlb.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/tlb.h	2012-07-11 20:20:45.327402372 +0200
@@ -24,6 +24,7 @@
 #include <linux/mm.h>
 #include <linux/pagemap.h>
 #include <linux/swap.h>
+
 #include <asm/processor.h>
 #include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/uaccess.h linux-3.2.22-g-v/arch/s390/include/asm/uaccess.h
--- linux-3.2.22/arch/s390/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/uaccess.h	2012-07-11 20:20:32.294119006 +0200
@@ -235,6 +235,10 @@ static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
 	if (access_ok(VERIFY_WRITE, to, n))
 		n = __copy_to_user(to, from, n);
 	return n;
@@ -260,6 +264,9 @@ copy_to_user(void __user *to, const void
 static inline unsigned long __must_check
 __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (__builtin_constant_p(n) && (n <= 256))
 		return uaccess.copy_from_user_small(n, from, to);
 	else
@@ -291,10 +298,14 @@ __compiletime_warning("copy_from_user() 
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-	unsigned int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(to);
 
 	might_fault();
-	if (unlikely(sz != -1 && sz < n)) {
+
+	if ((long)n < 0)
+		return n;
+
+	if (unlikely(sz != (size_t)-1 && sz < n)) {
 		copy_from_user_overflow();
 		return n;
 	}
diff -NurpP --minimal linux-3.2.22/arch/s390/include/asm/unistd.h linux-3.2.22-g-v/arch/s390/include/asm/unistd.h
--- linux-3.2.22/arch/s390/include/asm/unistd.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/include/asm/unistd.h	2012-07-11 20:20:45.327402372 +0200
@@ -202,7 +202,7 @@
 #define __NR_clock_gettime	(__NR_timer_create+6)
 #define __NR_clock_getres	(__NR_timer_create+7)
 #define __NR_clock_nanosleep	(__NR_timer_create+8)
-/* Number 263 is reserved for vserver */
+#define __NR_vserver		263
 #define __NR_statfs64		265
 #define __NR_fstatfs64		266
 #define __NR_remap_file_pages	267
diff -NurpP --minimal linux-3.2.22/arch/s390/Kconfig linux-3.2.22-g-v/arch/s390/Kconfig
--- linux-3.2.22/arch/s390/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/Kconfig	2012-07-11 20:20:45.327402372 +0200
@@ -643,6 +643,8 @@ source "fs/Kconfig"
 
 source "arch/s390/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/s390/kernel/module.c linux-3.2.22-g-v/arch/s390/kernel/module.c
--- linux-3.2.22/arch/s390/kernel/module.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/kernel/module.c	2012-07-11 20:20:32.294119006 +0200
@@ -161,11 +161,11 @@ module_frob_arch_sections(Elf_Ehdr *hdr,
 
 	/* Increase core size by size of got & plt and set start
 	   offsets for got and plt. */
-	me->core_size = ALIGN(me->core_size, 4);
-	me->arch.got_offset = me->core_size;
-	me->core_size += me->arch.got_size;
-	me->arch.plt_offset = me->core_size;
-	me->core_size += me->arch.plt_size;
+	me->core_size_rw = ALIGN(me->core_size_rw, 4);
+	me->arch.got_offset = me->core_size_rw;
+	me->core_size_rw += me->arch.got_size;
+	me->arch.plt_offset = me->core_size_rx;
+	me->core_size_rx += me->arch.plt_size;
 	return 0;
 }
 
@@ -242,7 +242,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 		if (info->got_initialized == 0) {
 			Elf_Addr *gotent;
 
-			gotent = me->module_core + me->arch.got_offset +
+			gotent = me->module_core_rw + me->arch.got_offset +
 				info->got_offset;
 			*gotent = val;
 			info->got_initialized = 1;
@@ -266,7 +266,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 		else if (r_type == R_390_GOTENT ||
 			 r_type == R_390_GOTPLTENT)
 			*(unsigned int *) loc =
-				(val + (Elf_Addr) me->module_core - loc) >> 1;
+				(val + (Elf_Addr) me->module_core_rw - loc) >> 1;
 		else if (r_type == R_390_GOT64 ||
 			 r_type == R_390_GOTPLT64)
 			*(unsigned long *) loc = val;
@@ -280,7 +280,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 	case R_390_PLTOFF64:	/* 16 bit offset from GOT to PLT. */
 		if (info->plt_initialized == 0) {
 			unsigned int *ip;
-			ip = me->module_core + me->arch.plt_offset +
+			ip = me->module_core_rx + me->arch.plt_offset +
 				info->plt_offset;
 #ifndef CONFIG_64BIT
 			ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
@@ -305,7 +305,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 			       val - loc + 0xffffUL < 0x1ffffeUL) ||
 			      (r_type == R_390_PLT32DBL &&
 			       val - loc + 0xffffffffULL < 0x1fffffffeULL)))
-				val = (Elf_Addr) me->module_core +
+				val = (Elf_Addr) me->module_core_rx +
 					me->arch.plt_offset +
 					info->plt_offset;
 			val += rela->r_addend - loc;
@@ -327,7 +327,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 	case R_390_GOTOFF32:	/* 32 bit offset to GOT.  */
 	case R_390_GOTOFF64:	/* 64 bit offset to GOT. */
 		val = val + rela->r_addend -
-			((Elf_Addr) me->module_core + me->arch.got_offset);
+			((Elf_Addr) me->module_core_rw + me->arch.got_offset);
 		if (r_type == R_390_GOTOFF16)
 			*(unsigned short *) loc = val;
 		else if (r_type == R_390_GOTOFF32)
@@ -337,7 +337,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base
 		break;
 	case R_390_GOTPC:	/* 32 bit PC relative offset to GOT. */
 	case R_390_GOTPCDBL:	/* 32 bit PC rel. off. to GOT shifted by 1. */
-		val = (Elf_Addr) me->module_core + me->arch.got_offset +
+		val = (Elf_Addr) me->module_core_rw + me->arch.got_offset +
 			rela->r_addend - loc;
 		if (r_type == R_390_GOTPC)
 			*(unsigned int *) loc = val;
diff -NurpP --minimal linux-3.2.22/arch/s390/kernel/process.c linux-3.2.22-g-v/arch/s390/kernel/process.c
--- linux-3.2.22/arch/s390/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/kernel/process.c	2012-07-11 20:20:32.297361399 +0200
@@ -320,39 +320,3 @@ unsigned long get_wchan(struct task_stru
 	}
 	return 0;
 }
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-	return sp & ~0xf;
-}
-
-static inline unsigned long brk_rnd(void)
-{
-	/* 8MB for 32bit, 1GB for 64bit */
-	if (is_32bit_task())
-		return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
-	else
-		return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long ret = PAGE_ALIGN(mm->brk + brk_rnd());
-
-	if (ret < mm->brk)
-		return mm->brk;
-	return ret;
-}
-
-unsigned long randomize_et_dyn(unsigned long base)
-{
-	unsigned long ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (!(current->flags & PF_RANDOMIZE))
-		return base;
-	if (ret < base)
-		return base;
-	return ret;
-}
diff -NurpP --minimal linux-3.2.22/arch/s390/kernel/ptrace.c linux-3.2.22-g-v/arch/s390/kernel/ptrace.c
--- linux-3.2.22/arch/s390/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/kernel/ptrace.c	2012-07-11 20:20:45.330629516 +0200
@@ -20,6 +20,7 @@
 #include <linux/regset.h>
 #include <linux/tracehook.h>
 #include <linux/seccomp.h>
+#include <linux/vs_base.h>
 #include <linux/compat.h>
 #include <trace/syscall.h>
 #include <asm/segment.h>
diff -NurpP --minimal linux-3.2.22/arch/s390/kernel/syscalls.S linux-3.2.22-g-v/arch/s390/kernel/syscalls.S
--- linux-3.2.22/arch/s390/kernel/syscalls.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/kernel/syscalls.S	2012-07-11 20:20:45.330629516 +0200
@@ -271,7 +271,7 @@ SYSCALL(sys_clock_settime,sys_clock_sett
 SYSCALL(sys_clock_gettime,sys_clock_gettime,sys32_clock_gettime_wrapper)	/* 260 */
 SYSCALL(sys_clock_getres,sys_clock_getres,sys32_clock_getres_wrapper)
 SYSCALL(sys_clock_nanosleep,sys_clock_nanosleep,sys32_clock_nanosleep_wrapper)
-NI_SYSCALL							/* reserved for vserver */
+SYSCALL(sys_vserver,sys_vserver,sys32_vserver)
 SYSCALL(sys_s390_fadvise64_64,sys_ni_syscall,sys32_fadvise64_64_wrapper)
 SYSCALL(sys_statfs64,sys_statfs64,compat_sys_statfs64_wrapper)
 SYSCALL(sys_fstatfs64,sys_fstatfs64,compat_sys_fstatfs64_wrapper)
diff -NurpP --minimal linux-3.2.22/arch/s390/mm/mmap.c linux-3.2.22-g-v/arch/s390/mm/mmap.c
--- linux-3.2.22/arch/s390/mm/mmap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/s390/mm/mmap.c	2012-07-11 20:20:32.297361399 +0200
@@ -92,10 +92,22 @@ void arch_pick_mmap_layout(struct mm_str
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 		mm->unmap_area = arch_unmap_area;
 	} else {
 		mm->mmap_base = mmap_base();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
@@ -167,10 +179,22 @@ void arch_pick_mmap_layout(struct mm_str
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = s390_get_unmapped_area;
 		mm->unmap_area = arch_unmap_area;
 	} else {
 		mm->mmap_base = mmap_base();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = s390_get_unmapped_area_topdown;
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
diff -NurpP --minimal linux-3.2.22/arch/score/include/asm/cache.h linux-3.2.22-g-v/arch/score/include/asm/cache.h
--- linux-3.2.22/arch/score/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/score/include/asm/cache.h	2012-07-11 20:20:32.297361399 +0200
@@ -1,7 +1,9 @@
 #ifndef _ASM_SCORE_CACHE_H
 #define _ASM_SCORE_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT		4
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* _ASM_SCORE_CACHE_H */
diff -NurpP --minimal linux-3.2.22/arch/score/include/asm/system.h linux-3.2.22-g-v/arch/score/include/asm/system.h
--- linux-3.2.22/arch/score/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/score/include/asm/system.h	2012-07-11 20:20:32.297361399 +0200
@@ -17,7 +17,7 @@ do {								\
 #define finish_arch_switch(prev)	do {} while (0)
 
 typedef void (*vi_handler_t)(void);
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) (x)
 
 #define mb()		barrier()
 #define rmb()		barrier()
diff -NurpP --minimal linux-3.2.22/arch/score/kernel/process.c linux-3.2.22-g-v/arch/score/kernel/process.c
--- linux-3.2.22/arch/score/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/score/kernel/process.c	2012-07-11 20:20:32.297361399 +0200
@@ -161,8 +161,3 @@ unsigned long get_wchan(struct task_stru
 
 	return task_pt_regs(task)->cp0_epc;
 }
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	return sp;
-}
diff -NurpP --minimal linux-3.2.22/arch/sh/include/asm/cache.h linux-3.2.22-g-v/arch/sh/include/asm/cache.h
--- linux-3.2.22/arch/sh/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sh/include/asm/cache.h	2012-07-11 20:20:32.297361399 +0200
@@ -9,10 +9,11 @@
 #define __ASM_SH_CACHE_H
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 #include <linux/init.h>
 #include <cpu/cache.h>
 
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
diff -NurpP --minimal linux-3.2.22/arch/sh/Kconfig linux-3.2.22-g-v/arch/sh/Kconfig
--- linux-3.2.22/arch/sh/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sh/Kconfig	2012-07-11 20:20:45.330629516 +0200
@@ -901,6 +901,8 @@ source "fs/Kconfig"
 
 source "arch/sh/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/sh/kernel/irq.c linux-3.2.22-g-v/arch/sh/kernel/irq.c
--- linux-3.2.22/arch/sh/kernel/irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sh/kernel/irq.c	2012-07-11 20:20:45.330629516 +0200
@@ -14,6 +14,7 @@
 #include <linux/ftrace.h>
 #include <linux/delay.h>
 #include <linux/ratelimit.h>
+// #include <linux/vs_context.h>
 #include <asm/processor.h>
 #include <asm/machvec.h>
 #include <asm/uaccess.h>
diff -NurpP --minimal linux-3.2.22/arch/sh/mm/mmap.c linux-3.2.22-g-v/arch/sh/mm/mmap.c
--- linux-3.2.22/arch/sh/mm/mmap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sh/mm/mmap.c	2012-07-11 20:20:32.300744575 +0200
@@ -74,8 +74,7 @@ unsigned long arch_get_unmapped_area(str
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 
@@ -106,7 +105,7 @@ full_search:
 			}
 			return -ENOMEM;
 		}
-		if (likely(!vma || addr + len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
@@ -157,8 +156,7 @@ arch_get_unmapped_area_topdown(struct fi
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 
@@ -179,7 +177,7 @@ arch_get_unmapped_area_topdown(struct fi
 	/* make sure it can fit in the remaining address space */
 	if (likely(addr > len)) {
 		vma = find_vma(mm, addr-len);
-		if (!vma || addr <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr - len, len)) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr-len);
 		}
@@ -188,18 +186,18 @@ arch_get_unmapped_area_topdown(struct fi
 	if (unlikely(mm->mmap_base < len))
 		goto bottomup;
 
-	addr = mm->mmap_base-len;
-	if (do_colour_align)
-		addr = COLOUR_ALIGN_DOWN(addr, pgoff);
+	addr = mm->mmap_base - len;
 
 	do {
+		if (do_colour_align)
+			addr = COLOUR_ALIGN_DOWN(addr, pgoff);
 		/*
 		 * Lookup failure means no vma is above this address,
 		 * else if new region fits below vma->vm_start,
 		 * return with success:
 		 */
 		vma = find_vma(mm, addr);
-		if (likely(!vma || addr+len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr);
 		}
@@ -209,10 +207,8 @@ arch_get_unmapped_area_topdown(struct fi
 		        mm->cached_hole_size = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = vma->vm_start-len;
-		if (do_colour_align)
-			addr = COLOUR_ALIGN_DOWN(addr, pgoff);
-	} while (likely(len < vma->vm_start));
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
 
 bottomup:
 	/*
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/atomic_32.h linux-3.2.22-g-v/arch/sparc/include/asm/atomic_32.h
--- linux-3.2.22/arch/sparc/include/asm/atomic_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/atomic_32.h	2012-07-11 20:20:32.300744575 +0200
@@ -13,6 +13,8 @@
 
 #include <linux/types.h>
 
+#include <asm-generic/atomic64.h>
+
 #ifdef __KERNEL__
 
 #include <asm/system.h>
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/atomic_64.h linux-3.2.22-g-v/arch/sparc/include/asm/atomic_64.h
--- linux-3.2.22/arch/sparc/include/asm/atomic_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/atomic_64.h	2012-07-11 20:20:32.300744575 +0200
@@ -14,18 +14,40 @@
 #define ATOMIC64_INIT(i)	{ (i) }
 
 #define atomic_read(v)		(*(volatile int *)&(v)->counter)
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return v->counter;
+}
 #define atomic64_read(v)	(*(volatile long *)&(v)->counter)
+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	return v->counter;
+}
 
 #define atomic_set(v, i)	(((v)->counter) = i)
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
 #define atomic64_set(v, i)	(((v)->counter) = i)
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
+{
+	v->counter = i;
+}
 
 extern void atomic_add(int, atomic_t *);
+extern void atomic_add_unchecked(int, atomic_unchecked_t *);
 extern void atomic64_add(long, atomic64_t *);
+extern void atomic64_add_unchecked(long, atomic64_unchecked_t *);
 extern void atomic_sub(int, atomic_t *);
+extern void atomic_sub_unchecked(int, atomic_unchecked_t *);
 extern void atomic64_sub(long, atomic64_t *);
+extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *);
 
 extern int atomic_add_ret(int, atomic_t *);
+extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *);
 extern long atomic64_add_ret(long, atomic64_t *);
+extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *);
 extern int atomic_sub_ret(int, atomic_t *);
 extern long atomic64_sub_ret(long, atomic64_t *);
 
@@ -33,13 +55,29 @@ extern long atomic64_sub_ret(long, atomi
 #define atomic64_dec_return(v) atomic64_sub_ret(1, v)
 
 #define atomic_inc_return(v) atomic_add_ret(1, v)
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_ret_unchecked(1, v);
+}
 #define atomic64_inc_return(v) atomic64_add_ret(1, v)
+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	return atomic64_add_ret_unchecked(1, v);
+}
 
 #define atomic_sub_return(i, v) atomic_sub_ret(i, v)
 #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v)
 
 #define atomic_add_return(i, v) atomic_add_ret(i, v)
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	return atomic_add_ret_unchecked(i, v);
+}
 #define atomic64_add_return(i, v) atomic64_add_ret(i, v)
+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
+{
+	return atomic64_add_ret_unchecked(i, v);
+}
 
 /*
  * atomic_inc_and_test - increment and test
@@ -50,6 +88,10 @@ extern long atomic64_sub_ret(long, atomi
  * other cases.
  */
 #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_inc_return_unchecked(v) == 0;
+}
 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
 
 #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0)
@@ -59,25 +101,60 @@ extern long atomic64_sub_ret(long, atomi
 #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0)
 
 #define atomic_inc(v) atomic_add(1, v)
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	atomic_add_unchecked(1, v);
+}
 #define atomic64_inc(v) atomic64_add(1, v)
+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
+{
+	atomic64_add_unchecked(1, v);
+}
 
 #define atomic_dec(v) atomic_sub(1, v)
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	atomic_sub_unchecked(1, v);
+}
 #define atomic64_dec(v) atomic64_sub(1, v)
+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
+{
+	atomic64_sub_unchecked(1, v);
+}
 
 #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
 #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
 
 #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
 
 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
-	int c, old;
+	int c, old, new;
 	c = atomic_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic_cmpxchg((v), c, c + (a));
+
+		asm volatile("addcc %2, %0, %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "tvs %%icc, 6\n"
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a)
+			     : "cc");
+
+		old = atomic_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
@@ -89,20 +166,35 @@ static inline int __atomic_add_unless(at
 #define atomic64_cmpxchg(v, o, n) \
 	((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
 #define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new)
+{
+	return xchg(&v->counter, new);
+}
 
 static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
 {
-	long c, old;
+	long c, old, new;
 	c = atomic64_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic64_cmpxchg((v), c, c + (a));
+
+		asm volatile("addcc %2, %0, %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "tvs %%xcc, 6\n"
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a)
+			     : "cc");
+
+		old = atomic64_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
 	}
-	return c != (u);
+	return c != u;
 }
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/cache.h linux-3.2.22-g-v/arch/sparc/include/asm/cache.h
--- linux-3.2.22/arch/sparc/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/cache.h	2012-07-11 20:20:32.300744575 +0200
@@ -7,10 +7,12 @@
 #ifndef _SPARC_CACHE_H
 #define _SPARC_CACHE_H
 
+#include <linux/const.h>
+
 #define ARCH_SLAB_MINALIGN	__alignof__(unsigned long long)
 
 #define L1_CACHE_SHIFT 5
-#define L1_CACHE_BYTES 32
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #ifdef CONFIG_SPARC32
 #define SMP_CACHE_BYTES_SHIFT 5
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/elf_32.h linux-3.2.22-g-v/arch/sparc/include/asm/elf_32.h
--- linux-3.2.22/arch/sparc/include/asm/elf_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/elf_32.h	2012-07-11 20:20:32.300744575 +0200
@@ -114,6 +114,13 @@ typedef struct {
 
 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x10000UL
+
+#define PAX_DELTA_MMAP_LEN	16
+#define PAX_DELTA_STACK_LEN	16
+#endif
+
 /* This yields a mask that user programs can use to figure out what
    instruction set this cpu supports.  This can NOT be done in userspace
    on Sparc.  */
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/elf_64.h linux-3.2.22-g-v/arch/sparc/include/asm/elf_64.h
--- linux-3.2.22/arch/sparc/include/asm/elf_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/elf_64.h	2012-07-11 20:20:32.304117889 +0200
@@ -180,6 +180,13 @@ typedef struct {
 #define ELF_ET_DYN_BASE		0x0000010000000000UL
 #define COMPAT_ELF_ET_DYN_BASE	0x0000000070000000UL
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL)
+
+#define PAX_DELTA_MMAP_LEN	(test_thread_flag(TIF_32BIT) ? 14 : 28)
+#define PAX_DELTA_STACK_LEN	(test_thread_flag(TIF_32BIT) ? 15 : 29)
+#endif
+
 extern unsigned long sparc64_elf_hwcap;
 #define ELF_HWCAP	sparc64_elf_hwcap
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/page_32.h linux-3.2.22-g-v/arch/sparc/include/asm/page_32.h
--- linux-3.2.22/arch/sparc/include/asm/page_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/page_32.h	2012-07-11 20:20:32.304117889 +0200
@@ -8,6 +8,8 @@
 #ifndef _SPARC_PAGE_H
 #define _SPARC_PAGE_H
 
+#include <linux/const.h>
+
 #define PAGE_SHIFT   12
 
 #ifndef __ASSEMBLY__
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/pgalloc_32.h linux-3.2.22-g-v/arch/sparc/include/asm/pgalloc_32.h
--- linux-3.2.22/arch/sparc/include/asm/pgalloc_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/pgalloc_32.h	2012-07-11 20:20:32.304117889 +0200
@@ -37,6 +37,7 @@ BTFIXUPDEF_CALL(void, free_pgd_fast, pgd
 BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *)
 #define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp)
 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
+#define pgd_populate_kernel(MM, PGD, PMD)      pgd_populate((MM), (PGD), (PMD))
 
 BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_one, struct mm_struct *, unsigned long)
 #define pmd_alloc_one(mm, address)	BTFIXUP_CALL(pmd_alloc_one)(mm, address)
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/pgalloc_64.h linux-3.2.22-g-v/arch/sparc/include/asm/pgalloc_64.h
--- linux-3.2.22/arch/sparc/include/asm/pgalloc_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/pgalloc_64.h	2012-07-11 20:20:32.304117889 +0200
@@ -26,6 +26,7 @@ static inline void pgd_free(struct mm_st
 }
 
 #define pud_populate(MM, PUD, PMD)	pud_set(PUD, PMD)
+#define pud_populate_kernel(MM, PUD, PMD)	pud_populate((MM), (PUD), (PMD))
 
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/pgtable_32.h linux-3.2.22-g-v/arch/sparc/include/asm/pgtable_32.h
--- linux-3.2.22/arch/sparc/include/asm/pgtable_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/pgtable_32.h	2012-07-11 20:20:32.304117889 +0200
@@ -45,6 +45,13 @@ BTFIXUPDEF_SIMM13(user_ptrs_per_pgd)
 BTFIXUPDEF_INT(page_none)
 BTFIXUPDEF_INT(page_copy)
 BTFIXUPDEF_INT(page_readonly)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+BTFIXUPDEF_INT(page_shared_noexec)
+BTFIXUPDEF_INT(page_copy_noexec)
+BTFIXUPDEF_INT(page_readonly_noexec)
+#endif
+
 BTFIXUPDEF_INT(page_kernel)
 
 #define PMD_SHIFT		SUN4C_PMD_SHIFT
@@ -66,6 +73,16 @@ extern pgprot_t PAGE_SHARED;
 #define PAGE_COPY      __pgprot(BTFIXUP_INT(page_copy))
 #define PAGE_READONLY  __pgprot(BTFIXUP_INT(page_readonly))
 
+#ifdef CONFIG_PAX_PAGEEXEC
+extern pgprot_t PAGE_SHARED_NOEXEC;
+# define PAGE_COPY_NOEXEC	__pgprot(BTFIXUP_INT(page_copy_noexec))
+# define PAGE_READONLY_NOEXEC	__pgprot(BTFIXUP_INT(page_readonly_noexec))
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+#endif
+
 extern unsigned long page_kernel;
 
 #ifdef MODULE
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/pgtsrmmu.h linux-3.2.22-g-v/arch/sparc/include/asm/pgtsrmmu.h
--- linux-3.2.22/arch/sparc/include/asm/pgtsrmmu.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/pgtsrmmu.h	2012-07-11 20:20:32.304117889 +0200
@@ -115,6 +115,13 @@
 				    SRMMU_EXEC | SRMMU_REF)
 #define SRMMU_PAGE_RDONLY  __pgprot(SRMMU_VALID | SRMMU_CACHE | \
 				    SRMMU_EXEC | SRMMU_REF)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+#define SRMMU_PAGE_SHARED_NOEXEC	__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF)
+#define SRMMU_PAGE_COPY_NOEXEC	__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
+#define SRMMU_PAGE_RDONLY_NOEXEC	__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
+#endif
+
 #define SRMMU_PAGE_KERNEL  __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \
 				    SRMMU_DIRTY | SRMMU_REF)
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/spinlock_64.h linux-3.2.22-g-v/arch/sparc/include/asm/spinlock_64.h
--- linux-3.2.22/arch/sparc/include/asm/spinlock_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/spinlock_64.h	2012-07-11 20:20:32.307325856 +0200
@@ -92,14 +92,19 @@ static inline void arch_spin_lock_flags(
 
 /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */
 
-static void inline arch_read_lock(arch_rwlock_t *lock)
+static inline void arch_read_lock(arch_rwlock_t *lock)
 {
 	unsigned long tmp1, tmp2;
 
 	__asm__ __volatile__ (
 "1:	ldsw		[%2], %0\n"
 "	brlz,pn		%0, 2f\n"
-"4:	 add		%0, 1, %1\n"
+"4:	 addcc		%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs		%%icc, 6\n"
+#endif
+
 "	cas		[%2], %0, %1\n"
 "	cmp		%0, %1\n"
 "	bne,pn		%%icc, 1b\n"
@@ -112,10 +117,10 @@ static void inline arch_read_lock(arch_r
 "	.previous"
 	: "=&r" (tmp1), "=&r" (tmp2)
 	: "r" (lock)
-	: "memory");
+	: "memory", "cc");
 }
 
-static int inline arch_read_trylock(arch_rwlock_t *lock)
+static inline int arch_read_trylock(arch_rwlock_t *lock)
 {
 	int tmp1, tmp2;
 
@@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch
 "1:	ldsw		[%2], %0\n"
 "	brlz,a,pn	%0, 2f\n"
 "	 mov		0, %0\n"
-"	add		%0, 1, %1\n"
+"	addcc		%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs		%%icc, 6\n"
+#endif
+
 "	cas		[%2], %0, %1\n"
 "	cmp		%0, %1\n"
 "	bne,pn		%%icc, 1b\n"
@@ -136,13 +146,18 @@ static int inline arch_read_trylock(arch
 	return tmp1;
 }
 
-static void inline arch_read_unlock(arch_rwlock_t *lock)
+static inline void arch_read_unlock(arch_rwlock_t *lock)
 {
 	unsigned long tmp1, tmp2;
 
 	__asm__ __volatile__(
 "1:	lduw	[%2], %0\n"
-"	sub	%0, 1, %1\n"
+"	subcc	%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs	%%icc, 6\n"
+#endif
+
 "	cas	[%2], %0, %1\n"
 "	cmp	%0, %1\n"
 "	bne,pn	%%xcc, 1b\n"
@@ -152,7 +167,7 @@ static void inline arch_read_unlock(arch
 	: "memory");
 }
 
-static void inline arch_write_lock(arch_rwlock_t *lock)
+static inline void arch_write_lock(arch_rwlock_t *lock)
 {
 	unsigned long mask, tmp1, tmp2;
 
@@ -177,7 +192,7 @@ static void inline arch_write_lock(arch_
 	: "memory");
 }
 
-static void inline arch_write_unlock(arch_rwlock_t *lock)
+static inline void arch_write_unlock(arch_rwlock_t *lock)
 {
 	__asm__ __volatile__(
 "	stw		%%g0, [%0]"
@@ -186,7 +201,7 @@ static void inline arch_write_unlock(arc
 	: "memory");
 }
 
-static int inline arch_write_trylock(arch_rwlock_t *lock)
+static inline int arch_write_trylock(arch_rwlock_t *lock)
 {
 	unsigned long mask, tmp1, tmp2, result;
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/thread_info_32.h linux-3.2.22-g-v/arch/sparc/include/asm/thread_info_32.h
--- linux-3.2.22/arch/sparc/include/asm/thread_info_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/thread_info_32.h	2012-07-11 20:20:32.307325856 +0200
@@ -50,6 +50,8 @@ struct thread_info {
 	unsigned long		w_saved;
 
 	struct restart_block	restart_block;
+
+	unsigned long		lowest_stack;
 };
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/thread_info_64.h linux-3.2.22-g-v/arch/sparc/include/asm/thread_info_64.h
--- linux-3.2.22/arch/sparc/include/asm/thread_info_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/thread_info_64.h	2012-07-11 20:20:32.307325856 +0200
@@ -63,6 +63,8 @@ struct thread_info {
 	struct pt_regs		*kern_una_regs;
 	unsigned int		kern_una_insn;
 
+	unsigned long		lowest_stack;
+
 	unsigned long		fpregs[0] __attribute__ ((aligned(64)));
 };
 
@@ -214,10 +216,11 @@ register struct thread_info *current_thr
 #define TIF_UNALIGNED		5	/* allowed to do unaligned accesses */
 /* flag bit 6 is available */
 #define TIF_32BIT		7	/* 32-bit binary */
-/* flag bit 8 is available */
+#define TIF_GRSEC_SETXID	8	/* update credentials on syscall entry/exit */
 #define TIF_SECCOMP		9	/* secure computing */
 #define TIF_SYSCALL_AUDIT	10	/* syscall auditing active */
 #define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
+
 /* NOTE: Thread flags >= 12 should be ones we have no interest
  *       in using in assembly, else we can't use the mask as
  *       an immediate value in instructions such as andcc.
@@ -238,12 +241,18 @@ register struct thread_info *current_thr
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 #define _TIF_FREEZE		(1<<TIF_FREEZE)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
 
 #define _TIF_USER_WORK_MASK	((0xff << TI_FLAG_WSAVED_SHIFT) | \
 				 _TIF_DO_NOTIFY_RESUME_MASK | \
 				 _TIF_NEED_RESCHED)
 #define _TIF_DO_NOTIFY_RESUME_MASK	(_TIF_NOTIFY_RESUME | _TIF_SIGPENDING)
 
+#define _TIF_WORK_SYSCALL		\
+	(_TIF_SYSCALL_TRACE | _TIF_SECCOMP | _TIF_SYSCALL_AUDIT | \
+	 _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
+
+
 /*
  * Thread-synchronous status.
  *
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/uaccess_32.h linux-3.2.22-g-v/arch/sparc/include/asm/uaccess_32.h
--- linux-3.2.22/arch/sparc/include/asm/uaccess_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/uaccess_32.h	2012-07-11 20:20:32.307325856 +0200
@@ -249,27 +249,46 @@ extern unsigned long __copy_user(void __
 
 static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-	if (n && __access_ok((unsigned long) to, n))
+	if ((long)n < 0)
+		return n;
+
+	if (n && __access_ok((unsigned long) to, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
 		return __copy_user(to, (__force void __user *) from, n);
-	else
+	} else
 		return n;
 }
 
 static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
+
 	return __copy_user(to, (__force void __user *) from, n);
 }
 
 static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-	if (n && __access_ok((unsigned long) from, n))
+	if ((long)n < 0)
+		return n;
+
+	if (n && __access_ok((unsigned long) from, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
 		return __copy_user((__force void __user *) to, from, n);
-	else
+	} else
 		return n;
 }
 
 static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	return __copy_user((__force void __user *) to, from, n);
 }
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/uaccess_64.h linux-3.2.22-g-v/arch/sparc/include/asm/uaccess_64.h
--- linux-3.2.22/arch/sparc/include/asm/uaccess_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/uaccess_64.h	2012-07-11 20:20:32.307325856 +0200
@@ -10,6 +10,7 @@
 #include <linux/compiler.h>
 #include <linux/string.h>
 #include <linux/thread_info.h>
+#include <linux/kernel.h>
 #include <asm/asi.h>
 #include <asm/system.h>
 #include <asm/spitfire.h>
@@ -213,8 +214,15 @@ extern unsigned long copy_from_user_fixu
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long size)
 {
-	unsigned long ret = ___copy_from_user(to, from, size);
+	unsigned long ret;
+
+	if ((long)size < 0 || size > INT_MAX)
+		return size;
 
+	if (!__builtin_constant_p(size))
+		check_object_size(to, size, false);
+
+	ret = ___copy_from_user(to, from, size);
 	if (unlikely(ret))
 		ret = copy_from_user_fixup(to, from, size);
 
@@ -230,8 +238,15 @@ extern unsigned long copy_to_user_fixup(
 static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long size)
 {
-	unsigned long ret = ___copy_to_user(to, from, size);
+	unsigned long ret;
+
+	if ((long)size < 0 || size > INT_MAX)
+		return size;
 
+	if (!__builtin_constant_p(size))
+		check_object_size(from, size, true);
+
+	ret = ___copy_to_user(to, from, size);
 	if (unlikely(ret))
 		ret = copy_to_user_fixup(to, from, size);
 	return ret;
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/uaccess.h linux-3.2.22-g-v/arch/sparc/include/asm/uaccess.h
--- linux-3.2.22/arch/sparc/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/uaccess.h	2012-07-11 20:20:32.307325856 +0200
@@ -1,5 +1,13 @@
 #ifndef ___ASM_SPARC_UACCESS_H
 #define ___ASM_SPARC_UACCESS_H
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+extern void check_object_size(const void *ptr, unsigned long n, bool to);
+#endif
+#endif
+
 #if defined(__sparc__) && defined(__arch64__)
 #include <asm/uaccess_64.h>
 #else
diff -NurpP --minimal linux-3.2.22/arch/sparc/include/asm/unistd.h linux-3.2.22-g-v/arch/sparc/include/asm/unistd.h
--- linux-3.2.22/arch/sparc/include/asm/unistd.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/include/asm/unistd.h	2012-07-11 20:20:45.333975405 +0200
@@ -335,7 +335,7 @@
 #define __NR_timer_getoverrun	264
 #define __NR_timer_delete	265
 #define __NR_timer_create	266
-/* #define __NR_vserver		267 Reserved for VSERVER */
+#define __NR_vserver		267
 #define __NR_io_setup		268
 #define __NR_io_destroy		269
 #define __NR_io_submit		270
diff -NurpP --minimal linux-3.2.22/arch/sparc/Kconfig linux-3.2.22-g-v/arch/sparc/Kconfig
--- linux-3.2.22/arch/sparc/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/Kconfig	2012-07-11 20:20:45.330629516 +0200
@@ -31,6 +31,7 @@ config SPARC
 
 config SPARC32
 	def_bool !64BIT
+	select GENERIC_ATOMIC64
 
 config SPARC64
 	def_bool 64BIT
@@ -598,6 +599,8 @@ source "fs/Kconfig"
 
 source "arch/sparc/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/Makefile linux-3.2.22-g-v/arch/sparc/kernel/Makefile
--- linux-3.2.22/arch/sparc/kernel/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/Makefile	2012-07-11 20:20:32.307325856 +0200
@@ -3,7 +3,7 @@
 #
 
 asflags-y := -ansi
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 extra-y     := head_$(BITS).o
 extra-y     += init_task.o
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/process_32.c linux-3.2.22-g-v/arch/sparc/kernel/process_32.c
--- linux-3.2.22/arch/sparc/kernel/process_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/process_32.c	2012-07-11 20:20:32.307325856 +0200
@@ -204,7 +204,7 @@ void __show_backtrace(unsigned long fp)
 		       rw->ins[4], rw->ins[5],
 		       rw->ins[6],
 		       rw->ins[7]);
-		printk("%pS\n", (void *) rw->ins[7]);
+		printk("%pA\n", (void *) rw->ins[7]);
 		rw = (struct reg_window32 *) rw->ins[6];
 	}
 	spin_unlock_irqrestore(&sparc_backtrace_lock, flags);
@@ -271,14 +271,14 @@ void show_regs(struct pt_regs *r)
 
         printk("PSR: %08lx PC: %08lx NPC: %08lx Y: %08lx    %s\n",
 	       r->psr, r->pc, r->npc, r->y, print_tainted());
-	printk("PC: <%pS>\n", (void *) r->pc);
+	printk("PC: <%pA>\n", (void *) r->pc);
 	printk("%%G: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       r->u_regs[0], r->u_regs[1], r->u_regs[2], r->u_regs[3],
 	       r->u_regs[4], r->u_regs[5], r->u_regs[6], r->u_regs[7]);
 	printk("%%O: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       r->u_regs[8], r->u_regs[9], r->u_regs[10], r->u_regs[11],
 	       r->u_regs[12], r->u_regs[13], r->u_regs[14], r->u_regs[15]);
-	printk("RPC: <%pS>\n", (void *) r->u_regs[15]);
+	printk("RPC: <%pA>\n", (void *) r->u_regs[15]);
 
 	printk("%%L: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       rw->locals[0], rw->locals[1], rw->locals[2], rw->locals[3],
@@ -313,7 +313,7 @@ void show_stack(struct task_struct *tsk,
 		rw = (struct reg_window32 *) fp;
 		pc = rw->ins[7];
 		printk("[%08lx : ", pc);
-		printk("%pS ] ", (void *) pc);
+		printk("%pA ] ", (void *) pc);
 		fp = rw->ins[6];
 	} while (++count < 16);
 	printk("\n");
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/process_64.c linux-3.2.22-g-v/arch/sparc/kernel/process_64.c
--- linux-3.2.22/arch/sparc/kernel/process_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/process_64.c	2012-07-11 20:20:32.310783855 +0200
@@ -180,14 +180,14 @@ static void show_regwindow(struct pt_reg
 	printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n",
 	       rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]);
 	if (regs->tstate & TSTATE_PRIV)
-		printk("I7: <%pS>\n", (void *) rwk->ins[7]);
+		printk("I7: <%pA>\n", (void *) rwk->ins[7]);
 }
 
 void show_regs(struct pt_regs *regs)
 {
 	printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x    %s\n", regs->tstate,
 	       regs->tpc, regs->tnpc, regs->y, print_tainted());
-	printk("TPC: <%pS>\n", (void *) regs->tpc);
+	printk("TPC: <%pA>\n", (void *) regs->tpc);
 	printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n",
 	       regs->u_regs[0], regs->u_regs[1], regs->u_regs[2],
 	       regs->u_regs[3]);
@@ -200,7 +200,7 @@ void show_regs(struct pt_regs *regs)
 	printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n",
 	       regs->u_regs[12], regs->u_regs[13], regs->u_regs[14],
 	       regs->u_regs[15]);
-	printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
+	printk("RPC: <%pA>\n", (void *) regs->u_regs[15]);
 	show_regwindow(regs);
 	show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]);
 }
@@ -285,7 +285,7 @@ void arch_trigger_all_cpu_backtrace(void
 		       ((tp && tp->task) ? tp->task->pid : -1));
 
 		if (gp->tstate & TSTATE_PRIV) {
-			printk("             TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
+			printk("             TPC[%pA] O7[%pA] I7[%pA] RPC[%pA]\n",
 			       (void *) gp->tpc,
 			       (void *) gp->o7,
 			       (void *) gp->i7,
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/ptrace_64.c linux-3.2.22-g-v/arch/sparc/kernel/ptrace_64.c
--- linux-3.2.22/arch/sparc/kernel/ptrace_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/ptrace_64.c	2012-07-11 20:20:32.310783855 +0200
@@ -1058,6 +1058,10 @@ long arch_ptrace(struct task_struct *chi
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 asmlinkage int syscall_trace_enter(struct pt_regs *regs)
 {
 	int ret = 0;
@@ -1065,6 +1069,11 @@ asmlinkage int syscall_trace_enter(struc
 	/* do the secure computing check first */
 	secure_computing(regs->u_regs[UREG_G1]);
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		ret = tracehook_report_syscall_entry(regs);
 
@@ -1086,6 +1095,11 @@ asmlinkage int syscall_trace_enter(struc
 
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 #ifdef CONFIG_AUDITSYSCALL
 	if (unlikely(current->audit_context)) {
 		unsigned long tstate = regs->tstate;
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/syscalls.S linux-3.2.22-g-v/arch/sparc/kernel/syscalls.S
--- linux-3.2.22/arch/sparc/kernel/syscalls.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/syscalls.S	2012-07-11 20:20:32.310783855 +0200
@@ -62,7 +62,7 @@ sys32_rt_sigreturn:
 #endif
 	.align	32
 1:	ldx	[%g6 + TI_FLAGS], %l5
-	andcc	%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
+	andcc	%l5, _TIF_WORK_SYSCALL, %g0
 	be,pt	%icc, rtrap
 	 nop
 	call	syscall_trace_leave
@@ -179,7 +179,7 @@ linux_sparc_syscall32:
 
 	srl	%i5, 0, %o5				! IEU1
 	srl	%i2, 0, %o2				! IEU0	Group
-	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
+	andcc	%l0, _TIF_WORK_SYSCALL, %g0
 	bne,pn	%icc, linux_syscall_trace32		! CTI
 	 mov	%i0, %l5				! IEU1
 	call	%l7					! CTI	Group brk forced
@@ -202,7 +202,7 @@ linux_sparc_syscall:
 
 	mov	%i3, %o3				! IEU1
 	mov	%i4, %o4				! IEU0	Group
-	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
+	andcc	%l0, _TIF_WORK_SYSCALL, %g0
 	bne,pn	%icc, linux_syscall_trace		! CTI	Group
 	 mov	%i0, %l5				! IEU0
 2:	call	%l7					! CTI	Group brk forced
@@ -226,7 +226,7 @@ ret_sys_call:
 
 	cmp	%o0, -ERESTART_RESTARTBLOCK
 	bgeu,pn	%xcc, 1f
-	 andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6
+	 andcc	%l0, _TIF_WORK_SYSCALL, %l6
 80:
 	/* System call success, clear Carry condition code. */
 	andn	%g3, %g2, %g3
@@ -241,7 +241,7 @@ ret_sys_call:
 	/* System call failure, set Carry condition code.
 	 * Also, get abs(errno) to return to the process.
 	 */
-	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6	
+	andcc	%l0, _TIF_WORK_SYSCALL, %l6	
 	sub	%g0, %o0, %o0
 	or	%g3, %g2, %g3
 	stx	%o0, [%sp + PTREGS_OFF + PT_V9_I0]
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/sys_sparc_32.c linux-3.2.22-g-v/arch/sparc/kernel/sys_sparc_32.c
--- linux-3.2.22/arch/sparc/kernel/sys_sparc_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/sys_sparc_32.c	2012-07-11 20:20:32.310783855 +0200
@@ -56,7 +56,7 @@ unsigned long arch_get_unmapped_area(str
 	if (ARCH_SUN4C && len > 0x20000000)
 		return -ENOMEM;
 	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
+		addr = current->mm->mmap_base;
 
 	if (flags & MAP_SHARED)
 		addr = COLOUR_ALIGN(addr);
@@ -71,7 +71,7 @@ unsigned long arch_get_unmapped_area(str
 		}
 		if (TASK_SIZE - PAGE_SIZE - len < addr)
 			return -ENOMEM;
-		if (!vmm || addr + len <= vmm->vm_start)
+		if (check_heap_stack_gap(vmm, addr, len))
 			return addr;
 		addr = vmm->vm_end;
 		if (flags & MAP_SHARED)
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/sys_sparc_64.c linux-3.2.22-g-v/arch/sparc/kernel/sys_sparc_64.c
--- linux-3.2.22/arch/sparc/kernel/sys_sparc_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/sys_sparc_64.c	2012-07-11 20:20:32.310783855 +0200
@@ -124,7 +124,7 @@ unsigned long arch_get_unmapped_area(str
 		/* We do not accept a shared mapping if it would violate
 		 * cache aliasing constraints.
 		 */
-		if ((flags & MAP_SHARED) &&
+		if ((filp || (flags & MAP_SHARED)) &&
 		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
 			return -EINVAL;
 		return addr;
@@ -139,6 +139,10 @@ unsigned long arch_get_unmapped_area(str
 	if (filp || (flags & MAP_SHARED))
 		do_color_align = 1;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -146,15 +150,14 @@ unsigned long arch_get_unmapped_area(str
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 
 	if (len > mm->cached_hole_size) {
-	        start_addr = addr = mm->free_area_cache;
+		start_addr = addr = mm->free_area_cache;
 	} else {
-	        start_addr = addr = TASK_UNMAPPED_BASE;
+		start_addr = addr = mm->mmap_base;
 	        mm->cached_hole_size = 0;
 	}
 
@@ -174,14 +177,14 @@ full_search:
 			vma = find_vma(mm, VA_EXCLUDE_END);
 		}
 		if (unlikely(task_size < addr)) {
-			if (start_addr != TASK_UNMAPPED_BASE) {
-				start_addr = addr = TASK_UNMAPPED_BASE;
+			if (start_addr != mm->mmap_base) {
+				start_addr = addr = mm->mmap_base;
 				mm->cached_hole_size = 0;
 				goto full_search;
 			}
 			return -ENOMEM;
 		}
-		if (likely(!vma || addr + len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
@@ -215,7 +218,7 @@ arch_get_unmapped_area_topdown(struct fi
 		/* We do not accept a shared mapping if it would violate
 		 * cache aliasing constraints.
 		 */
-		if ((flags & MAP_SHARED) &&
+		if ((filp || (flags & MAP_SHARED)) &&
 		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
 			return -EINVAL;
 		return addr;
@@ -236,8 +239,7 @@ arch_get_unmapped_area_topdown(struct fi
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 
@@ -258,7 +260,7 @@ arch_get_unmapped_area_topdown(struct fi
 	/* make sure it can fit in the remaining address space */
 	if (likely(addr > len)) {
 		vma = find_vma(mm, addr-len);
-		if (!vma || addr <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr - len, len)) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr-len);
 		}
@@ -267,18 +269,18 @@ arch_get_unmapped_area_topdown(struct fi
 	if (unlikely(mm->mmap_base < len))
 		goto bottomup;
 
-	addr = mm->mmap_base-len;
-	if (do_color_align)
-		addr = COLOUR_ALIGN_DOWN(addr, pgoff);
+	addr = mm->mmap_base - len;
 
 	do {
+		if (do_color_align)
+			addr = COLOUR_ALIGN_DOWN(addr, pgoff);
 		/*
 		 * Lookup failure means no vma is above this address,
 		 * else if new region fits below vma->vm_start,
 		 * return with success:
 		 */
 		vma = find_vma(mm, addr);
-		if (likely(!vma || addr+len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr);
 		}
@@ -288,10 +290,8 @@ arch_get_unmapped_area_topdown(struct fi
  		        mm->cached_hole_size = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = vma->vm_start-len;
-		if (do_color_align)
-			addr = COLOUR_ALIGN_DOWN(addr, pgoff);
-	} while (likely(len < vma->vm_start));
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
 
 bottomup:
 	/*
@@ -390,6 +390,12 @@ void arch_pick_mmap_layout(struct mm_str
 	    gap == RLIM_INFINITY ||
 	    sysctl_legacy_va_layout) {
 		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 		mm->unmap_area = arch_unmap_area;
 	} else {
@@ -402,6 +408,12 @@ void arch_pick_mmap_layout(struct mm_str
 			gap = (task_size / 6 * 5);
 
 		mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/systbls_32.S linux-3.2.22-g-v/arch/sparc/kernel/systbls_32.S
--- linux-3.2.22/arch/sparc/kernel/systbls_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/systbls_32.S	2012-07-11 20:20:45.333975405 +0200
@@ -70,7 +70,7 @@ sys_call_table:
 /*250*/	.long sys_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_ni_syscall
 /*255*/	.long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 /*260*/	.long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
-/*265*/	.long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
+/*265*/	.long sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 /*270*/	.long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 /*275*/	.long sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 /*280*/	.long sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/systbls_64.S linux-3.2.22-g-v/arch/sparc/kernel/systbls_64.S
--- linux-3.2.22/arch/sparc/kernel/systbls_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/systbls_64.S	2012-07-11 20:20:45.333975405 +0200
@@ -71,7 +71,7 @@ sys_call_table32:
 /*250*/	.word sys_mremap, compat_sys_sysctl, sys32_getsid, sys_fdatasync, sys_nis_syscall
 	.word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
 /*260*/	.word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
-	.word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
+	.word sys_timer_delete, compat_sys_timer_create, sys32_vserver, compat_sys_io_setup, sys_io_destroy
 /*270*/	.word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
 	.word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
 /*280*/	.word sys32_tee, sys_add_key, sys_request_key, compat_sys_keyctl, compat_sys_openat
@@ -148,7 +148,7 @@ sys_call_table:
 /*250*/	.word sys_64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nis_syscall
 	.word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 /*260*/	.word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
-	.word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
+	.word sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
 /*270*/	.word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
 	.word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
 /*280*/	.word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/traps_32.c linux-3.2.22-g-v/arch/sparc/kernel/traps_32.c
--- linux-3.2.22/arch/sparc/kernel/traps_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/traps_32.c	2012-07-11 20:20:32.310783855 +0200
@@ -45,6 +45,8 @@ static void instruction_dump(unsigned lo
 #define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t")
 #define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t")
 
+extern void gr_handle_kernel_exploit(void);
+
 void die_if_kernel(char *str, struct pt_regs *regs)
 {
 	static int die_counter;
@@ -77,15 +79,17 @@ void die_if_kernel(char *str, struct pt_
 		      count++ < 30				&&
                       (((unsigned long) rw) >= PAGE_OFFSET)	&&
 		      !(((unsigned long) rw) & 0x7)) {
-			printk("Caller[%08lx]: %pS\n", rw->ins[7],
+			printk("Caller[%08lx]: %pA\n", rw->ins[7],
 			       (void *) rw->ins[7]);
 			rw = (struct reg_window32 *)rw->ins[6];
 		}
 	}
 	printk("Instruction DUMP:");
 	instruction_dump ((unsigned long *) regs->pc);
-	if(regs->psr & PSR_PS)
+	if(regs->psr & PSR_PS) {
+		gr_handle_kernel_exploit();
 		do_exit(SIGKILL);
+	}
 	do_exit(SIGSEGV);
 }
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/traps_64.c linux-3.2.22-g-v/arch/sparc/kernel/traps_64.c
--- linux-3.2.22/arch/sparc/kernel/traps_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/traps_64.c	2012-07-11 20:20:32.314048560 +0200
@@ -75,7 +75,7 @@ static void dump_tl1_traplog(struct tl1_
 		       i + 1,
 		       p->trapstack[i].tstate, p->trapstack[i].tpc,
 		       p->trapstack[i].tnpc, p->trapstack[i].tt);
-		printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
+		printk("TRAPLOG: TPC<%pA>\n", (void *) p->trapstack[i].tpc);
 	}
 }
 
@@ -95,6 +95,12 @@ void bad_trap(struct pt_regs *regs, long
 
 	lvl -= 0x100;
 	if (regs->tstate & TSTATE_PRIV) {
+
+#ifdef CONFIG_PAX_REFCOUNT
+		if (lvl == 6)
+			pax_report_refcount_overflow(regs);
+#endif
+
 		sprintf(buffer, "Kernel bad sw trap %lx", lvl);
 		die_if_kernel(buffer, regs);
 	}
@@ -113,11 +119,16 @@ void bad_trap(struct pt_regs *regs, long
 void bad_trap_tl1(struct pt_regs *regs, long lvl)
 {
 	char buffer[32];
-	
+
 	if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
 		       0, lvl, SIGTRAP) == NOTIFY_STOP)
 		return;
 
+#ifdef CONFIG_PAX_REFCOUNT
+	if (lvl == 6)
+		pax_report_refcount_overflow(regs);
+#endif
+
 	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
 
 	sprintf (buffer, "Bad trap %lx at tl>0", lvl);
@@ -1141,7 +1152,7 @@ static void cheetah_log_errors(struct pt
 	       regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
 	printk("%s" "ERROR(%d): ",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
-	printk("TPC<%pS>\n", (void *) regs->tpc);
+	printk("TPC<%pA>\n", (void *) regs->tpc);
 	printk("%s" "ERROR(%d): M_SYND(%lx),  E_SYND(%lx)%s%s\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
@@ -1748,7 +1759,7 @@ void cheetah_plus_parity_error(int type,
 		       smp_processor_id(),
 		       (type & 0x1) ? 'I' : 'D',
 		       regs->tpc);
-		printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
+		printk(KERN_EMERG "TPC<%pA>\n", (void *) regs->tpc);
 		panic("Irrecoverable Cheetah+ parity error.");
 	}
 
@@ -1756,7 +1767,7 @@ void cheetah_plus_parity_error(int type,
 	       smp_processor_id(),
 	       (type & 0x1) ? 'I' : 'D',
 	       regs->tpc);
-	printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_WARNING "TPC<%pA>\n", (void *) regs->tpc);
 }
 
 struct sun4v_error_entry {
@@ -1963,9 +1974,9 @@ void sun4v_itlb_error_report(struct pt_r
 
 	printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
 	       regs->tpc, tl);
-	printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-ITLB: TPC<%pA>\n", (void *) regs->tpc);
 	printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
-	printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
+	printk(KERN_EMERG "SUN4V-ITLB: O7<%pA>\n",
 	       (void *) regs->u_regs[UREG_I7]);
 	printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
 	       "pte[%lx] error[%lx]\n",
@@ -1987,9 +1998,9 @@ void sun4v_dtlb_error_report(struct pt_r
 
 	printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
 	       regs->tpc, tl);
-	printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-DTLB: TPC<%pA>\n", (void *) regs->tpc);
 	printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
-	printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
+	printk(KERN_EMERG "SUN4V-DTLB: O7<%pA>\n",
 	       (void *) regs->u_regs[UREG_I7]);
 	printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
 	       "pte[%lx] error[%lx]\n",
@@ -2195,13 +2206,13 @@ void show_stack(struct task_struct *tsk,
 			fp = (unsigned long)sf->fp + STACK_BIAS;
 		}
 
-		printk(" [%016lx] %pS\n", pc, (void *) pc);
+		printk(" [%016lx] %pA\n", pc, (void *) pc);
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 		if ((pc + 8UL) == (unsigned long) &return_to_handler) {
 			int index = tsk->curr_ret_stack;
 			if (tsk->ret_stack && index >= graph) {
 				pc = tsk->ret_stack[index - graph].ret;
-				printk(" [%016lx] %pS\n", pc, (void *) pc);
+				printk(" [%016lx] %pA\n", pc, (void *) pc);
 				graph++;
 			}
 		}
@@ -2226,6 +2237,8 @@ static inline struct reg_window *kernel_
 	return (struct reg_window *) (fp + STACK_BIAS);
 }
 
+extern void gr_handle_kernel_exploit(void);
+
 void die_if_kernel(char *str, struct pt_regs *regs)
 {
 	static int die_counter;
@@ -2254,7 +2267,7 @@ void die_if_kernel(char *str, struct pt_
 		while (rw &&
 		       count++ < 30 &&
 		       kstack_valid(tp, (unsigned long) rw)) {
-			printk("Caller[%016lx]: %pS\n", rw->ins[7],
+			printk("Caller[%016lx]: %pA\n", rw->ins[7],
 			       (void *) rw->ins[7]);
 
 			rw = kernel_stack_up(rw);
@@ -2267,8 +2280,10 @@ void die_if_kernel(char *str, struct pt_
 		}
 		user_instruction_dump ((unsigned int __user *) regs->tpc);
 	}
-	if (regs->tstate & TSTATE_PRIV)
+	if (regs->tstate & TSTATE_PRIV) {
+		gr_handle_kernel_exploit();
 		do_exit(SIGKILL);
+	}
 	do_exit(SIGSEGV);
 }
 EXPORT_SYMBOL(die_if_kernel);
diff -NurpP --minimal linux-3.2.22/arch/sparc/kernel/unaligned_64.c linux-3.2.22-g-v/arch/sparc/kernel/unaligned_64.c
--- linux-3.2.22/arch/sparc/kernel/unaligned_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/kernel/unaligned_64.c	2012-07-11 20:20:32.314048560 +0200
@@ -279,7 +279,7 @@ static void log_unaligned(struct pt_regs
 	static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5);
 
 	if (__ratelimit(&ratelimit)) {
-		printk("Kernel unaligned access at TPC[%lx] %pS\n",
+		printk("Kernel unaligned access at TPC[%lx] %pA\n",
 		       regs->tpc, (void *) regs->tpc);
 	}
 }
diff -NurpP --minimal linux-3.2.22/arch/sparc/lib/atomic_64.S linux-3.2.22-g-v/arch/sparc/lib/atomic_64.S
--- linux-3.2.22/arch/sparc/lib/atomic_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/lib/atomic_64.S	2012-07-11 20:20:32.314048560 +0200
@@ -18,7 +18,12 @@
 atomic_add: /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -28,12 +33,32 @@ atomic_add: /* %o0 = increment, %o1 = at
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_add, .-atomic_add
 
+	.globl	atomic_add_unchecked
+	.type	atomic_add_unchecked,#function
+atomic_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	add	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic_add_unchecked, .-atomic_add_unchecked
+
 	.globl	atomic_sub
 	.type	atomic_sub,#function
 atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -43,12 +68,32 @@ atomic_sub: /* %o0 = decrement, %o1 = at
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_sub, .-atomic_sub
 
+	.globl	atomic_sub_unchecked
+	.type	atomic_sub_unchecked,#function
+atomic_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	sub	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic_sub_unchecked, .-atomic_sub_unchecked
+
 	.globl	atomic_add_ret
 	.type	atomic_add_ret,#function
 atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -58,12 +103,33 @@ atomic_add_ret: /* %o0 = increment, %o1 
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_add_ret, .-atomic_add_ret
 
+	.globl	atomic_add_ret_unchecked
+	.type	atomic_add_ret_unchecked,#function
+atomic_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 add	%g7, %o0, %g7
+	sra	%g7, 0, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic_add_ret_unchecked, .-atomic_add_ret_unchecked
+
 	.globl	atomic_sub_ret
 	.type	atomic_sub_ret,#function
 atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -78,7 +144,12 @@ atomic_sub_ret: /* %o0 = decrement, %o1 
 atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -88,12 +159,32 @@ atomic64_add: /* %o0 = increment, %o1 = 
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_add, .-atomic64_add
 
+	.globl	atomic64_add_unchecked
+	.type	atomic64_add_unchecked,#function
+atomic64_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic64_add_unchecked, .-atomic64_add_unchecked
+
 	.globl	atomic64_sub
 	.type	atomic64_sub,#function
 atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -103,12 +194,32 @@ atomic64_sub: /* %o0 = decrement, %o1 = 
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_sub, .-atomic64_sub
 
+	.globl	atomic64_sub_unchecked
+	.type	atomic64_sub_unchecked,#function
+atomic64_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	subcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic64_sub_unchecked, .-atomic64_sub_unchecked
+
 	.globl	atomic64_add_ret
 	.type	atomic64_add_ret,#function
 atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -118,12 +229,33 @@ atomic64_add_ret: /* %o0 = increment, %o
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_add_ret, .-atomic64_add_ret
 
+	.globl	atomic64_add_ret_unchecked
+	.type	atomic64_add_ret_unchecked,#function
+atomic64_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 add	%g7, %o0, %g7
+	mov	%g7, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+	.size	atomic64_add_ret_unchecked, .-atomic64_add_ret_unchecked
+
 	.globl	atomic64_sub_ret
 	.type	atomic64_sub_ret,#function
 atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
diff -NurpP --minimal linux-3.2.22/arch/sparc/lib/ksyms.c linux-3.2.22-g-v/arch/sparc/lib/ksyms.c
--- linux-3.2.22/arch/sparc/lib/ksyms.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/lib/ksyms.c	2012-07-11 20:20:32.314048560 +0200
@@ -142,12 +142,18 @@ EXPORT_SYMBOL(__downgrade_write);
 
 /* Atomic counter implementation. */
 EXPORT_SYMBOL(atomic_add);
+EXPORT_SYMBOL(atomic_add_unchecked);
 EXPORT_SYMBOL(atomic_add_ret);
+EXPORT_SYMBOL(atomic_add_ret_unchecked);
 EXPORT_SYMBOL(atomic_sub);
+EXPORT_SYMBOL(atomic_sub_unchecked);
 EXPORT_SYMBOL(atomic_sub_ret);
 EXPORT_SYMBOL(atomic64_add);
+EXPORT_SYMBOL(atomic64_add_unchecked);
 EXPORT_SYMBOL(atomic64_add_ret);
+EXPORT_SYMBOL(atomic64_add_ret_unchecked);
 EXPORT_SYMBOL(atomic64_sub);
+EXPORT_SYMBOL(atomic64_sub_unchecked);
 EXPORT_SYMBOL(atomic64_sub_ret);
 
 /* Atomic bit operations. */
diff -NurpP --minimal linux-3.2.22/arch/sparc/lib/Makefile linux-3.2.22-g-v/arch/sparc/lib/Makefile
--- linux-3.2.22/arch/sparc/lib/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/lib/Makefile	2012-07-11 20:20:32.314048560 +0200
@@ -2,7 +2,7 @@
 #
 
 asflags-y := -ansi -DST_DIV0=0x02
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o
 lib-$(CONFIG_SPARC32) += memcpy.o memset.o
diff -NurpP --minimal linux-3.2.22/arch/sparc/Makefile linux-3.2.22-g-v/arch/sparc/Makefile
--- linux-3.2.22/arch/sparc/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/Makefile	2012-07-11 20:20:32.300744575 +0200
@@ -75,7 +75,7 @@ drivers-$(CONFIG_OPROFILE)	+= arch/sparc
 # Export what is needed by arch/sparc/boot/Makefile
 export VMLINUX_INIT VMLINUX_MAIN
 VMLINUX_INIT := $(head-y) $(init-y)
-VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/
+VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/
 VMLINUX_MAIN += $(patsubst %/, %/lib.a, $(libs-y)) $(libs-y)
 VMLINUX_MAIN += $(drivers-y) $(net-y)
 
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/fault_32.c linux-3.2.22-g-v/arch/sparc/mm/fault_32.c
--- linux-3.2.22/arch/sparc/mm/fault_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/fault_32.c	2012-07-11 20:20:32.317303778 +0200
@@ -21,6 +21,9 @@
 #include <linux/perf_event.h>
 #include <linux/interrupt.h>
 #include <linux/kdebug.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
 
 #include <asm/system.h>
 #include <asm/page.h>
@@ -208,6 +211,268 @@ static unsigned long compute_si_addr(str
 	return safe_compute_effective_address(regs, insn);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+#ifdef CONFIG_PAX_DLRESOLVE
+static void pax_emuplt_close(struct vm_area_struct *vma)
+{
+	vma->vm_mm->call_dl_resolve = 0UL;
+}
+
+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	unsigned int *kaddr;
+
+	vmf->page = alloc_page(GFP_HIGHUSER);
+	if (!vmf->page)
+		return VM_FAULT_OOM;
+
+	kaddr = kmap(vmf->page);
+	memset(kaddr, 0, PAGE_SIZE);
+	kaddr[0] = 0x9DE3BFA8U; /* save */
+	flush_dcache_page(vmf->page);
+	kunmap(vmf->page);
+	return VM_FAULT_MAJOR;
+}
+
+static const struct vm_operations_struct pax_vm_ops = {
+	.close = pax_emuplt_close,
+	.fault = pax_emuplt_fault
+};
+
+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
+{
+	int ret;
+
+	INIT_LIST_HEAD(&vma->anon_vma_chain);
+	vma->vm_mm = current->mm;
+	vma->vm_start = addr;
+	vma->vm_end = addr + PAGE_SIZE;
+	vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
+	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+	vma->vm_ops = &pax_vm_ops;
+
+	ret = insert_vm_struct(current->mm, vma);
+	if (ret)
+		return ret;
+
+	++current->mm->total_vm;
+	return 0;
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->pc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int sethi1, sethi2, jmpl;
+
+		err = get_user(sethi1, (unsigned int *)regs->pc);
+		err |= get_user(sethi2, (unsigned int *)(regs->pc+4));
+		err |= get_user(jmpl, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U)
+		{
+			unsigned int addr;
+
+			regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
+			addr = regs->u_regs[UREG_G1];
+			addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	{ /* PaX: patched PLT emulation #2 */
+		unsigned int ba;
+
+		err = get_user(ba, (unsigned int *)regs->pc);
+
+		if (!err && (ba & 0xFFC00000U) == 0x30800000U) {
+			unsigned int addr;
+
+			addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	}
+
+	do { /* PaX: patched PLT emulation #3 */
+		unsigned int sethi, jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->pc);
+		err |= get_user(jmpl, (unsigned int *)(regs->pc+4));
+		err |= get_user(nop, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned int addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 1 */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->pc);
+		err |= get_user(ba, (unsigned int *)(regs->pc+4));
+		err |= get_user(nop, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned int addr, save, call;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
+			else
+				addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
+
+			err = get_user(save, (unsigned int *)addr);
+			err |= get_user(call, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			if (err)
+				break;
+
+#ifdef CONFIG_PAX_DLRESOLVE
+			if (save == 0x9DE3BFA8U &&
+			    (call & 0xC0000000U) == 0x40000000U &&
+			    nop == 0x01000000U)
+			{
+				struct vm_area_struct *vma;
+				unsigned long call_dl_resolve;
+
+				down_read(&current->mm->mmap_sem);
+				call_dl_resolve = current->mm->call_dl_resolve;
+				up_read(&current->mm->mmap_sem);
+				if (likely(call_dl_resolve))
+					goto emulate;
+
+				vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+
+				down_write(&current->mm->mmap_sem);
+				if (current->mm->call_dl_resolve) {
+					call_dl_resolve = current->mm->call_dl_resolve;
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					goto emulate;
+				}
+
+				call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
+				if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				if (pax_insert_vma(vma, call_dl_resolve)) {
+					up_write(&current->mm->mmap_sem);
+					kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				current->mm->call_dl_resolve = call_dl_resolve;
+				up_write(&current->mm->mmap_sem);
+
+emulate:
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->pc = call_dl_resolve;
+				regs->npc = addr+4;
+				return 3;
+			}
+#endif
+
+			/* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
+			if ((save & 0xFFC00000U) == 0x05000000U &&
+			    (call & 0xFFFFE000U) == 0x85C0A000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G2] = addr + 4;
+				addr = (save & 0x003FFFFFU) << 10;
+				addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+				regs->pc = addr;
+				regs->npc = addr+4;
+				return 3;
+			}
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 2 */
+		unsigned int save, call, nop;
+
+		err = get_user(save, (unsigned int *)(regs->pc-4));
+		err |= get_user(call, (unsigned int *)regs->pc);
+		err |= get_user(nop, (unsigned int *)(regs->pc+4));
+		if (err)
+			break;
+
+		if (save == 0x9DE3BFA8U &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2);
+
+			regs->u_regs[UREG_RETPC] = regs->pc;
+			regs->pc = dl_resolve;
+			regs->npc = dl_resolve+4;
+			return 3;
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
 				      int text_fault)
 {
@@ -280,6 +545,24 @@ good_area:
 		if(!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) {
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 2:
+			case 3:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		/* Allow reads even for write-only mappings */
 		if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
 			goto bad_area;
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/fault_64.c linux-3.2.22-g-v/arch/sparc/mm/fault_64.c
--- linux-3.2.22/arch/sparc/mm/fault_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/fault_64.c	2012-07-11 20:20:32.317303778 +0200
@@ -21,6 +21,9 @@
 #include <linux/kprobes.h>
 #include <linux/kdebug.h>
 #include <linux/percpu.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -74,7 +77,7 @@ static void __kprobes bad_kernel_pc(stru
 	printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
 	       regs->tpc);
 	printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
-	printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]);
+	printk("OOPS: RPC <%pA>\n", (void *) regs->u_regs[15]);
 	printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
 	dump_stack();
 	unhandled_fault(regs->tpc, current, regs);
@@ -272,6 +275,457 @@ static void noinline __kprobes bogus_32b
 	show_regs(regs);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+#ifdef CONFIG_PAX_DLRESOLVE
+static void pax_emuplt_close(struct vm_area_struct *vma)
+{
+	vma->vm_mm->call_dl_resolve = 0UL;
+}
+
+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	unsigned int *kaddr;
+
+	vmf->page = alloc_page(GFP_HIGHUSER);
+	if (!vmf->page)
+		return VM_FAULT_OOM;
+
+	kaddr = kmap(vmf->page);
+	memset(kaddr, 0, PAGE_SIZE);
+	kaddr[0] = 0x9DE3BFA8U; /* save */
+	flush_dcache_page(vmf->page);
+	kunmap(vmf->page);
+	return VM_FAULT_MAJOR;
+}
+
+static const struct vm_operations_struct pax_vm_ops = {
+	.close = pax_emuplt_close,
+	.fault = pax_emuplt_fault
+};
+
+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
+{
+	int ret;
+
+	INIT_LIST_HEAD(&vma->anon_vma_chain);
+	vma->vm_mm = current->mm;
+	vma->vm_start = addr;
+	vma->vm_end = addr + PAGE_SIZE;
+	vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
+	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+	vma->vm_ops = &pax_vm_ops;
+
+	ret = insert_vm_struct(current->mm, vma);
+	if (ret)
+		return ret;
+
+	++current->mm->total_vm;
+	return 0;
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->tpc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int sethi1, sethi2, jmpl;
+
+		err = get_user(sethi1, (unsigned int *)regs->tpc);
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+4));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
+			addr = regs->u_regs[UREG_G1];
+			addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	{ /* PaX: patched PLT emulation #2 */
+		unsigned int ba;
+
+		err = get_user(ba, (unsigned int *)regs->tpc);
+
+		if (!err && (ba & 0xFFC00000U) == 0x30800000U) {
+			unsigned long addr;
+
+			addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	}
+
+	do { /* PaX: patched PLT emulation #3 */
+		unsigned int sethi, jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #4 */
+		unsigned int sethi, mov1, call, mov2;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(mov1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(call, (unsigned int *)(regs->tpc+8));
+		err |= get_user(mov2, (unsigned int *)(regs->tpc+12));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    mov1 == 0x8210000FU &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    mov2 == 0x9E100001U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC];
+			addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #5 */
+		unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
+		err |= get_user(or1, (unsigned int *)(regs->tpc+12));
+		err |= get_user(or2, (unsigned int *)(regs->tpc+16));
+		err |= get_user(sllx, (unsigned int *)(regs->tpc+20));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+24));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+28));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+		    (or1 & 0xFFFFE000U) == 0x82106000U &&
+		    (or2 & 0xFFFFE000U) == 0x8A116000U &&
+		    sllx == 0x83287020U &&
+		    jmpl == 0x81C04005U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
+			regs->u_regs[UREG_G1] <<= 32;
+			regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
+			addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #6 */
+		unsigned int sethi, sethi1, sethi2, sllx, or,  jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
+		err |= get_user(sllx, (unsigned int *)(regs->tpc+12));
+		err |= get_user(or, (unsigned int *)(regs->tpc+16));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+20));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+24));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+		    sllx == 0x83287020U &&
+		    (or & 0xFFFFE000U) == 0x8A116000U &&
+		    jmpl == 0x81C04005U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] <<= 32;
+			regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU);
+			addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 1 */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(ba, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+			unsigned int save, call;
+			unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
+			else
+				addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			err = get_user(save, (unsigned int *)addr);
+			err |= get_user(call, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			if (err)
+				break;
+
+#ifdef CONFIG_PAX_DLRESOLVE
+			if (save == 0x9DE3BFA8U &&
+			    (call & 0xC0000000U) == 0x40000000U &&
+			    nop == 0x01000000U)
+			{
+				struct vm_area_struct *vma;
+				unsigned long call_dl_resolve;
+
+				down_read(&current->mm->mmap_sem);
+				call_dl_resolve = current->mm->call_dl_resolve;
+				up_read(&current->mm->mmap_sem);
+				if (likely(call_dl_resolve))
+					goto emulate;
+
+				vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+
+				down_write(&current->mm->mmap_sem);
+				if (current->mm->call_dl_resolve) {
+					call_dl_resolve = current->mm->call_dl_resolve;
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					goto emulate;
+				}
+
+				call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
+				if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				if (pax_insert_vma(vma, call_dl_resolve)) {
+					up_write(&current->mm->mmap_sem);
+					kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				current->mm->call_dl_resolve = call_dl_resolve;
+				up_write(&current->mm->mmap_sem);
+
+emulate:
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->tpc = call_dl_resolve;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+#endif
+
+			/* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
+			if ((save & 0xFFC00000U) == 0x05000000U &&
+			    (call & 0xFFFFE000U) == 0x85C0A000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G2] = addr + 4;
+				addr = (save & 0x003FFFFFU) << 10;
+				addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+
+				if (test_thread_flag(TIF_32BIT))
+					addr &= 0xFFFFFFFFUL;
+
+				regs->tpc = addr;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+
+			/* PaX: 64-bit PLT stub */
+			err = get_user(sethi1, (unsigned int *)addr);
+			err |= get_user(sethi2, (unsigned int *)(addr+4));
+			err |= get_user(or1, (unsigned int *)(addr+8));
+			err |= get_user(or2, (unsigned int *)(addr+12));
+			err |= get_user(sllx, (unsigned int *)(addr+16));
+			err |= get_user(add, (unsigned int *)(addr+20));
+			err |= get_user(jmpl, (unsigned int *)(addr+24));
+			err |= get_user(nop, (unsigned int *)(addr+28));
+			if (err)
+				break;
+
+			if ((sethi1 & 0xFFC00000U) == 0x09000000U &&
+			    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+			    (or1 & 0xFFFFE000U) == 0x88112000U &&
+			    (or2 & 0xFFFFE000U) == 0x8A116000U &&
+			    sllx == 0x89293020U &&
+			    add == 0x8A010005U &&
+			    jmpl == 0x89C14000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
+				regs->u_regs[UREG_G4] <<= 32;
+				regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
+				regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4];
+				regs->u_regs[UREG_G4] = addr + 24;
+				addr = regs->u_regs[UREG_G5];
+				regs->tpc = addr;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+		}
+	} while (0);
+
+#ifdef CONFIG_PAX_DLRESOLVE
+	do { /* PaX: unpatched PLT emulation step 2 */
+		unsigned int save, call, nop;
+
+		err = get_user(save, (unsigned int *)(regs->tpc-4));
+		err |= get_user(call, (unsigned int *)regs->tpc);
+		err |= get_user(nop, (unsigned int *)(regs->tpc+4));
+		if (err)
+			break;
+
+		if (save == 0x9DE3BFA8U &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				dl_resolve &= 0xFFFFFFFFUL;
+
+			regs->u_regs[UREG_RETPC] = regs->tpc;
+			regs->tpc = dl_resolve;
+			regs->tnpc = dl_resolve+4;
+			return 3;
+		}
+	} while (0);
+#endif
+
+	do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(ba, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (ba & 0xFFF00000U) == 0x30600000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
 {
 	struct mm_struct *mm = current->mm;
@@ -340,6 +794,29 @@ asmlinkage void __kprobes do_sparc64_fau
 	if (!vma)
 		goto bad_area;
 
+#ifdef CONFIG_PAX_PAGEEXEC
+	/* PaX: detect ITLB misses on non-exec pages */
+	if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address &&
+	    !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB))
+	{
+		if (address != regs->tpc)
+			goto good_area;
+
+		up_read(&mm->mmap_sem);
+		switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+		case 2:
+		case 3:
+			return;
+#endif
+
+		}
+		pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS));
+		do_group_exit(SIGKILL);
+	}
+#endif
+
 	/* Pure DTLB misses do not tell us whether the fault causing
 	 * load/store/atomic was a write or not, it only says that there
 	 * was no match.  So in such a case we (carefully) read the
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/hugetlbpage.c linux-3.2.22-g-v/arch/sparc/mm/hugetlbpage.c
--- linux-3.2.22/arch/sparc/mm/hugetlbpage.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/hugetlbpage.c	2012-07-11 20:20:32.317303778 +0200
@@ -67,7 +67,7 @@ full_search:
 			}
 			return -ENOMEM;
 		}
-		if (likely(!vma || addr + len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
@@ -106,7 +106,7 @@ hugetlb_get_unmapped_area_topdown(struct
 	/* make sure it can fit in the remaining address space */
 	if (likely(addr > len)) {
 		vma = find_vma(mm, addr-len);
-		if (!vma || addr <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr - len, len)) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr-len);
 		}
@@ -115,16 +115,17 @@ hugetlb_get_unmapped_area_topdown(struct
 	if (unlikely(mm->mmap_base < len))
 		goto bottomup;
 
-	addr = (mm->mmap_base-len) & HPAGE_MASK;
+	addr = mm->mmap_base - len;
 
 	do {
+		addr &= HPAGE_MASK;
 		/*
 		 * Lookup failure means no vma is above this address,
 		 * else if new region fits below vma->vm_start,
 		 * return with success:
 		 */
 		vma = find_vma(mm, addr);
-		if (likely(!vma || addr+len <= vma->vm_start)) {
+		if (likely(check_heap_stack_gap(vma, addr, len))) {
 			/* remember the address as a hint for next time */
 			return (mm->free_area_cache = addr);
 		}
@@ -134,8 +135,8 @@ hugetlb_get_unmapped_area_topdown(struct
  		        mm->cached_hole_size = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = (vma->vm_start-len) & HPAGE_MASK;
-	} while (likely(len < vma->vm_start));
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
 
 bottomup:
 	/*
@@ -181,8 +182,7 @@ hugetlb_get_unmapped_area(struct file *f
 	if (addr) {
 		addr = ALIGN(addr, HPAGE_SIZE);
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/init_32.c linux-3.2.22-g-v/arch/sparc/mm/init_32.c
--- linux-3.2.22/arch/sparc/mm/init_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/init_32.c	2012-07-11 20:20:32.597509827 +0200
@@ -316,6 +316,9 @@ extern void device_scan(void);
 pgprot_t PAGE_SHARED __read_mostly;
 EXPORT_SYMBOL(PAGE_SHARED);
 
+pgprot_t PAGE_SHARED_NOEXEC __read_mostly;
+EXPORT_SYMBOL(PAGE_SHARED_NOEXEC);
+
 void __init paging_init(void)
 {
 	switch(sparc_cpu_model) {
@@ -344,17 +347,17 @@ void __init paging_init(void)
 
 	/* Initialize the protection map with non-constant, MMU dependent values. */
 	protection_map[0] = PAGE_NONE;
-	protection_map[1] = PAGE_READONLY;
-	protection_map[2] = PAGE_COPY;
-	protection_map[3] = PAGE_COPY;
+	protection_map[1] = PAGE_READONLY_NOEXEC;
+	protection_map[2] = PAGE_COPY_NOEXEC;
+	protection_map[3] = PAGE_COPY_NOEXEC;
 	protection_map[4] = PAGE_READONLY;
 	protection_map[5] = PAGE_READONLY;
 	protection_map[6] = PAGE_COPY;
 	protection_map[7] = PAGE_COPY;
 	protection_map[8] = PAGE_NONE;
-	protection_map[9] = PAGE_READONLY;
-	protection_map[10] = PAGE_SHARED;
-	protection_map[11] = PAGE_SHARED;
+	protection_map[9] = PAGE_READONLY_NOEXEC;
+	protection_map[10] = PAGE_SHARED_NOEXEC;
+	protection_map[11] = PAGE_SHARED_NOEXEC;
 	protection_map[12] = PAGE_READONLY;
 	protection_map[13] = PAGE_READONLY;
 	protection_map[14] = PAGE_SHARED;
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/Makefile linux-3.2.22-g-v/arch/sparc/mm/Makefile
--- linux-3.2.22/arch/sparc/mm/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/Makefile	2012-07-11 20:20:32.314048560 +0200
@@ -2,7 +2,7 @@
 #
 
 asflags-y := -ansi
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 obj-$(CONFIG_SPARC64)   += ultra.o tlb.o tsb.o gup.o
 obj-y                   += fault_$(BITS).o
diff -NurpP --minimal linux-3.2.22/arch/sparc/mm/srmmu.c linux-3.2.22-g-v/arch/sparc/mm/srmmu.c
--- linux-3.2.22/arch/sparc/mm/srmmu.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/sparc/mm/srmmu.c	2012-07-11 20:20:35.607289290 +0200
@@ -2200,6 +2200,13 @@ void __init ld_mmu_srmmu(void)
 	PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED);
 	BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY));
 	BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY));
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	PAGE_SHARED_NOEXEC = pgprot_val(SRMMU_PAGE_SHARED_NOEXEC);
+	BTFIXUPSET_INT(page_copy_noexec, pgprot_val(SRMMU_PAGE_COPY_NOEXEC));
+	BTFIXUPSET_INT(page_readonly_noexec, pgprot_val(SRMMU_PAGE_RDONLY_NOEXEC));
+#endif
+
 	BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL));
 	page_kernel = pgprot_val(SRMMU_PAGE_KERNEL);
 
diff -NurpP --minimal linux-3.2.22/arch/tile/include/asm/atomic_64.h linux-3.2.22-g-v/arch/tile/include/asm/atomic_64.h
--- linux-3.2.22/arch/tile/include/asm/atomic_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/tile/include/asm/atomic_64.h	2012-07-11 20:20:36.717450156 +0200
@@ -142,6 +142,16 @@ static inline long atomic64_add_unless(a
 
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 /* Atomic dec and inc don't implement barrier, so provide them if needed. */
 #define smp_mb__before_atomic_dec()	smp_mb()
 #define smp_mb__after_atomic_dec()	smp_mb()
diff -NurpP --minimal linux-3.2.22/arch/tile/include/asm/cache.h linux-3.2.22-g-v/arch/tile/include/asm/cache.h
--- linux-3.2.22/arch/tile/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/tile/include/asm/cache.h	2012-07-11 20:20:36.717450156 +0200
@@ -15,11 +15,12 @@
 #ifndef _ASM_TILE_CACHE_H
 #define _ASM_TILE_CACHE_H
 
+#include <linux/const.h>
 #include <arch/chip.h>
 
 /* bytes per L1 data cache line */
 #define L1_CACHE_SHIFT		CHIP_L1D_LOG_LINE_SIZE()
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /* bytes per L2 cache line */
 #define L2_CACHE_SHIFT		CHIP_L2_LOG_LINE_SIZE()
diff -NurpP --minimal linux-3.2.22/arch/tile/include/asm/uaccess.h linux-3.2.22-g-v/arch/tile/include/asm/uaccess.h
--- linux-3.2.22/arch/tile/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/tile/include/asm/uaccess.h	2012-07-11 20:20:36.900642282 +0200
@@ -361,9 +361,9 @@ static inline unsigned long __must_check
 					  const void __user *from,
 					  unsigned long n)
 {
-	int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(to);
 
-	if (likely(sz == -1 || sz >= n))
+	if (likely(sz == (size_t)-1 || sz >= n))
 		n = _copy_from_user(to, from, n);
 	else
 		copy_from_user_overflow();
diff -NurpP --minimal linux-3.2.22/arch/um/include/asm/cache.h linux-3.2.22-g-v/arch/um/include/asm/cache.h
--- linux-3.2.22/arch/um/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/include/asm/cache.h	2012-07-11 20:20:36.970840540 +0200
@@ -1,6 +1,7 @@
 #ifndef __UM_CACHE_H
 #define __UM_CACHE_H
 
+#include <linux/const.h>
 
 #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT)
 # define L1_CACHE_SHIFT		(CONFIG_X86_L1_CACHE_SHIFT)
@@ -12,6 +13,6 @@
 # define L1_CACHE_SHIFT		5
 #endif
 
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif
diff -NurpP --minimal linux-3.2.22/arch/um/include/asm/kmap_types.h linux-3.2.22-g-v/arch/um/include/asm/kmap_types.h
--- linux-3.2.22/arch/um/include/asm/kmap_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/include/asm/kmap_types.h	2012-07-11 20:20:36.970840540 +0200
@@ -23,6 +23,7 @@ enum km_type {
 	KM_IRQ1,
 	KM_SOFTIRQ0,
 	KM_SOFTIRQ1,
+	KM_CLEARPAGE,
 	KM_TYPE_NR
 };
 
diff -NurpP --minimal linux-3.2.22/arch/um/include/asm/page.h linux-3.2.22-g-v/arch/um/include/asm/page.h
--- linux-3.2.22/arch/um/include/asm/page.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/include/asm/page.h	2012-07-11 20:20:36.974116766 +0200
@@ -14,6 +14,9 @@
 #define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
+#define ktla_ktva(addr)			(addr)
+#define ktva_ktla(addr)			(addr)
+
 #ifndef __ASSEMBLY__
 
 struct page;
diff -NurpP --minimal linux-3.2.22/arch/um/include/asm/pgtable-3level.h linux-3.2.22-g-v/arch/um/include/asm/pgtable-3level.h
--- linux-3.2.22/arch/um/include/asm/pgtable-3level.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/include/asm/pgtable-3level.h	2012-07-11 20:20:36.974116766 +0200
@@ -58,6 +58,7 @@
 #define pud_present(x)	(pud_val(x) & _PAGE_PRESENT)
 #define pud_populate(mm, pud, pmd) \
 	set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd))
 
 #ifdef CONFIG_64BIT
 #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval))
diff -NurpP --minimal linux-3.2.22/arch/um/include/shared/kern_constants.h linux-3.2.22-g-v/arch/um/include/shared/kern_constants.h
--- linux-3.2.22/arch/um/include/shared/kern_constants.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-3.2.22-g-v/arch/um/include/shared/kern_constants.h	2012-07-11 20:20:45.333975405 +0200
@@ -0,0 +1 @@
+#include "../../../../include/generated/asm-offsets.h"
diff -NurpP --minimal linux-3.2.22/arch/um/include/shared/user_constants.h linux-3.2.22-g-v/arch/um/include/shared/user_constants.h
--- linux-3.2.22/arch/um/include/shared/user_constants.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-3.2.22-g-v/arch/um/include/shared/user_constants.h	2012-07-11 20:20:45.333975405 +0200
@@ -0,0 +1,40 @@
+/*
+ * DO NOT MODIFY.
+ *
+ * This file was generated by arch/um/Makefile
+ *
+ */
+
+#define HOST_SC_CR2 176 /* offsetof(struct sigcontext, cr2)	# */
+#define HOST_SC_ERR 152 /* offsetof(struct sigcontext, err)	# */
+#define HOST_SC_TRAPNO 160 /* offsetof(struct sigcontext, trapno)	# */
+#define HOST_FP_SIZE 64 /* sizeof(struct _fpstate) / sizeof(unsigned long)	# */
+#define HOST_RBX 5 /* RBX	# */
+#define HOST_RCX 11 /* RCX	# */
+#define HOST_RDI 14 /* RDI	# */
+#define HOST_RSI 13 /* RSI	# */
+#define HOST_RDX 12 /* RDX	# */
+#define HOST_RBP 4 /* RBP	# */
+#define HOST_RAX 10 /* RAX	# */
+#define HOST_R8 9 /* R8	# */
+#define HOST_R9 8 /* R9	# */
+#define HOST_R10 7 /* R10	# */
+#define HOST_R11 6 /* R11	# */
+#define HOST_R12 3 /* R12	# */
+#define HOST_R13 2 /* R13	# */
+#define HOST_R14 1 /* R14	# */
+#define HOST_R15 0 /* R15	# */
+#define HOST_ORIG_RAX 15 /* ORIG_RAX	# */
+#define HOST_CS 17 /* CS	# */
+#define HOST_SS 20 /* SS	# */
+#define HOST_EFLAGS 18 /* EFLAGS	# */
+#define HOST_IP 16 /* RIP	# */
+#define HOST_SP 19 /* RSP	# */
+#define UM_FRAME_SIZE 216 /* sizeof(struct user_regs_struct)	# */
+#define UM_POLLIN 1 /* POLLIN	# */
+#define UM_POLLPRI 2 /* POLLPRI	# */
+#define UM_POLLOUT 4 /* POLLOUT	# */
+#define UM_PROT_READ 1 /* PROT_READ	# */
+#define UM_PROT_WRITE 2 /* PROT_WRITE	# */
+#define UM_PROT_EXEC 4 /* PROT_EXEC	# */
+
diff -NurpP --minimal linux-3.2.22/arch/um/Kconfig.rest linux-3.2.22-g-v/arch/um/Kconfig.rest
--- linux-3.2.22/arch/um/Kconfig.rest	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/Kconfig.rest	2012-07-11 20:20:45.333975405 +0200
@@ -12,6 +12,8 @@ source "arch/um/Kconfig.net"
 
 source "fs/Kconfig"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/um/kernel/process.c linux-3.2.22-g-v/arch/um/kernel/process.c
--- linux-3.2.22/arch/um/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/kernel/process.c	2012-07-11 20:20:36.974116766 +0200
@@ -406,22 +406,6 @@ int singlestepping(void * t)
 	return 2;
 }
 
-/*
- * Only x86 and x86_64 have an arch_align_stack().
- * All other arches have "#define arch_align_stack(x) (x)"
- * in their asm/system.h
- * As this is included in UML from asm-um/system-generic.h,
- * we can use it to behave as the subarch does.
- */
-#ifndef arch_align_stack
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
-	return sp & ~0xf;
-}
-#endif
-
 unsigned long get_wchan(struct task_struct *p)
 {
 	unsigned long stack_page, sp, ip;
diff -NurpP --minimal linux-3.2.22/arch/um/Makefile linux-3.2.22-g-v/arch/um/Makefile
--- linux-3.2.22/arch/um/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/um/Makefile	2012-07-11 20:20:36.956401226 +0200
@@ -61,6 +61,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINE
 	$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
 	$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
 
+ifdef CONSTIFY_PLUGIN
+USER_CFLAGS	+= $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify
+endif
+
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
 
diff -NurpP --minimal linux-3.2.22/arch/unicore32/include/asm/cache.h linux-3.2.22-g-v/arch/unicore32/include/asm/cache.h
--- linux-3.2.22/arch/unicore32/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/unicore32/include/asm/cache.h	2012-07-11 20:20:36.974116766 +0200
@@ -12,8 +12,10 @@
 #ifndef __UNICORE_CACHE_H__
 #define __UNICORE_CACHE_H__
 
-#define L1_CACHE_SHIFT		(5)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#include <linux/const.h>
+
+#define L1_CACHE_SHIFT		5
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/bitops.h linux-3.2.22-g-v/arch/x86/boot/bitops.h
--- linux-3.2.22/arch/x86/boot/bitops.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/bitops.h	2012-07-11 20:20:36.977450815 +0200
@@ -26,7 +26,7 @@ static inline int variable_test_bit(int 
 	u8 v;
 	const u32 *p = (const u32 *)addr;
 
-	asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
+	asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
 	return v;
 }
 
@@ -37,7 +37,7 @@ static inline int variable_test_bit(int 
 
 static inline void set_bit(int nr, void *addr)
 {
-	asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
+	asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
 }
 
 #endif /* BOOT_BITOPS_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/boot.h linux-3.2.22-g-v/arch/x86/boot/boot.h
--- linux-3.2.22/arch/x86/boot/boot.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/boot.h	2012-07-11 20:20:36.980783608 +0200
@@ -85,7 +85,7 @@ static inline void io_delay(void)
 static inline u16 ds(void)
 {
 	u16 seg;
-	asm("movw %%ds,%0" : "=rm" (seg));
+	asm volatile("movw %%ds,%0" : "=rm" (seg));
 	return seg;
 }
 
@@ -181,7 +181,7 @@ static inline void wrgs32(u32 v, addr_t 
 static inline int memcmp(const void *s1, const void *s2, size_t len)
 {
 	u8 diff;
-	asm("repe; cmpsb; setnz %0"
+	asm volatile("repe; cmpsb; setnz %0"
 	    : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/compressed/head_32.S linux-3.2.22-g-v/arch/x86/boot/compressed/head_32.S
--- linux-3.2.22/arch/x86/boot/compressed/head_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/compressed/head_32.S	2012-07-11 20:20:36.980783608 +0200
@@ -76,7 +76,7 @@ ENTRY(startup_32)
 	notl	%eax
 	andl    %eax, %ebx
 #else
-	movl	$LOAD_PHYSICAL_ADDR, %ebx
+	movl	$____LOAD_PHYSICAL_ADDR, %ebx
 #endif
 
 	/* Target address to relocate to for decompression */
@@ -162,7 +162,7 @@ relocated:
  * and where it was actually loaded.
  */
 	movl	%ebp, %ebx
-	subl	$LOAD_PHYSICAL_ADDR, %ebx
+	subl	$____LOAD_PHYSICAL_ADDR, %ebx
 	jz	2f	/* Nothing to be done if loaded at compiled addr. */
 /*
  * Process relocations.
@@ -170,8 +170,7 @@ relocated:
 
 1:	subl	$4, %edi
 	movl	(%edi), %ecx
-	testl	%ecx, %ecx
-	jz	2f
+	jecxz	2f
 	addl	%ebx, -__PAGE_OFFSET(%ebx, %ecx)
 	jmp	1b
 2:
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/compressed/head_64.S linux-3.2.22-g-v/arch/x86/boot/compressed/head_64.S
--- linux-3.2.22/arch/x86/boot/compressed/head_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/compressed/head_64.S	2012-07-11 20:20:36.980783608 +0200
@@ -91,7 +91,7 @@ ENTRY(startup_32)
 	notl	%eax
 	andl	%eax, %ebx
 #else
-	movl	$LOAD_PHYSICAL_ADDR, %ebx
+	movl	$____LOAD_PHYSICAL_ADDR, %ebx
 #endif
 
 	/* Target address to relocate to for decompression */
@@ -233,7 +233,7 @@ ENTRY(startup_64)
 	notq	%rax
 	andq	%rax, %rbp
 #else
-	movq	$LOAD_PHYSICAL_ADDR, %rbp
+	movq	$____LOAD_PHYSICAL_ADDR, %rbp
 #endif
 
 	/* Target address to relocate to for decompression */
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/compressed/Makefile linux-3.2.22-g-v/arch/x86/boot/compressed/Makefile
--- linux-3.2.22/arch/x86/boot/compressed/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/compressed/Makefile	2012-07-11 20:20:36.980783608 +0200
@@ -14,6 +14,9 @@ cflags-$(CONFIG_X86_64) := -mcmodel=smal
 KBUILD_CFLAGS += $(cflags-y)
 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS += $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify
+endif
 
 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/compressed/misc.c linux-3.2.22-g-v/arch/x86/boot/compressed/misc.c
--- linux-3.2.22/arch/x86/boot/compressed/misc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/compressed/misc.c	2012-07-11 20:20:36.980783608 +0200
@@ -310,7 +310,7 @@ static void parse_elf(void *output)
 		case PT_LOAD:
 #ifdef CONFIG_RELOCATABLE
 			dest = output;
-			dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR);
+			dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR);
 #else
 			dest = (void *)(phdr->p_paddr);
 #endif
@@ -363,7 +363,7 @@ asmlinkage void decompress_kernel(void *
 		error("Destination address too large");
 #endif
 #ifndef CONFIG_RELOCATABLE
-	if ((unsigned long)output != LOAD_PHYSICAL_ADDR)
+	if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR)
 		error("Wrong destination address");
 #endif
 
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/cpucheck.c linux-3.2.22-g-v/arch/x86/boot/cpucheck.c
--- linux-3.2.22/arch/x86/boot/cpucheck.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/cpucheck.c	2012-07-11 20:20:36.980783608 +0200
@@ -74,7 +74,7 @@ static int has_fpu(void)
 	u16 fcw = -1, fsw = -1;
 	u32 cr0;
 
-	asm("movl %%cr0,%0" : "=r" (cr0));
+	asm volatile("movl %%cr0,%0" : "=r" (cr0));
 	if (cr0 & (X86_CR0_EM|X86_CR0_TS)) {
 		cr0 &= ~(X86_CR0_EM|X86_CR0_TS);
 		asm volatile("movl %0,%%cr0" : : "r" (cr0));
@@ -90,7 +90,7 @@ static int has_eflag(u32 mask)
 {
 	u32 f0, f1;
 
-	asm("pushfl ; "
+	asm volatile("pushfl ; "
 	    "pushfl ; "
 	    "popl %0 ; "
 	    "movl %0,%1 ; "
@@ -115,7 +115,7 @@ static void get_flags(void)
 		set_bit(X86_FEATURE_FPU, cpu.flags);
 
 	if (has_eflag(X86_EFLAGS_ID)) {
-		asm("cpuid"
+		asm volatile("cpuid"
 		    : "=a" (max_intel_level),
 		      "=b" (cpu_vendor[0]),
 		      "=d" (cpu_vendor[1]),
@@ -124,7 +124,7 @@ static void get_flags(void)
 
 		if (max_intel_level >= 0x00000001 &&
 		    max_intel_level <= 0x0000ffff) {
-			asm("cpuid"
+			asm volatile("cpuid"
 			    : "=a" (tfms),
 			      "=c" (cpu.flags[4]),
 			      "=d" (cpu.flags[0])
@@ -136,7 +136,7 @@ static void get_flags(void)
 				cpu.model += ((tfms >> 16) & 0xf) << 4;
 		}
 
-		asm("cpuid"
+		asm volatile("cpuid"
 		    : "=a" (max_amd_level)
 		    : "a" (0x80000000)
 		    : "ebx", "ecx", "edx");
@@ -144,7 +144,7 @@ static void get_flags(void)
 		if (max_amd_level >= 0x80000001 &&
 		    max_amd_level <= 0x8000ffff) {
 			u32 eax = 0x80000001;
-			asm("cpuid"
+			asm volatile("cpuid"
 			    : "+a" (eax),
 			      "=c" (cpu.flags[6]),
 			      "=d" (cpu.flags[1])
@@ -203,9 +203,9 @@ int check_cpu(int *cpu_level_ptr, int *r
 		u32 ecx = MSR_K7_HWCR;
 		u32 eax, edx;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
 		eax &= ~(1 << 15);
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		get_flags();	/* Make sure it really did something */
 		err = check_flags();
@@ -218,9 +218,9 @@ int check_cpu(int *cpu_level_ptr, int *r
 		u32 ecx = MSR_VIA_FCR;
 		u32 eax, edx;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
 		eax |= (1<<1)|(1<<7);
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		set_bit(X86_FEATURE_CX8, cpu.flags);
 		err = check_flags();
@@ -231,12 +231,12 @@ int check_cpu(int *cpu_level_ptr, int *r
 		u32 eax, edx;
 		u32 level = 1;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
-		asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
-		asm("cpuid"
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
+		asm volatile("cpuid"
 		    : "+a" (level), "=d" (cpu.flags[0])
 		    : : "ecx", "ebx");
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		err = check_flags();
 	}
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/header.S linux-3.2.22-g-v/arch/x86/boot/header.S
--- linux-3.2.22/arch/x86/boot/header.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/header.S	2012-07-11 20:20:36.984117610 +0200
@@ -224,7 +224,7 @@ setup_data:		.quad 0			# 64-bit physical
 						# single linked list of
 						# struct setup_data
 
-pref_address:		.quad LOAD_PHYSICAL_ADDR	# preferred load addr
+pref_address:		.quad ____LOAD_PHYSICAL_ADDR	# preferred load addr
 
 #define ZO_INIT_SIZE	(ZO__end - ZO_startup_32 + ZO_z_extract_offset)
 #define VO_INIT_SIZE	(VO__end - VO__text)
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/Makefile linux-3.2.22-g-v/arch/x86/boot/Makefile
--- linux-3.2.22/arch/x86/boot/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/Makefile	2012-07-11 20:20:36.977450815 +0200
@@ -63,6 +63,9 @@ KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os 
 		   $(call cc-option, -fno-stack-protector) \
 		   $(call cc-option, -mpreferred-stack-boundary=2)
 KBUILD_CFLAGS	+= $(call cc-option, -m32)
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS	+= $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify
+endif
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
 
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/memory.c linux-3.2.22-g-v/arch/x86/boot/memory.c
--- linux-3.2.22/arch/x86/boot/memory.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/memory.c	2012-07-11 20:20:36.984117610 +0200
@@ -19,7 +19,7 @@
 
 static int detect_memory_e820(void)
 {
-	int count = 0;
+	unsigned int count = 0;
 	struct biosregs ireg, oreg;
 	struct e820entry *desc = boot_params.e820_map;
 	static struct e820entry buf; /* static so it is zeroed */
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/video.c linux-3.2.22-g-v/arch/x86/boot/video.c
--- linux-3.2.22/arch/x86/boot/video.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/video.c	2012-07-11 20:20:36.984117610 +0200
@@ -96,7 +96,7 @@ static void store_mode_params(void)
 static unsigned int get_entry(void)
 {
 	char entry_buf[4];
-	int i, len = 0;
+	unsigned int i, len = 0;
 	int key;
 	unsigned int v;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/boot/video-vesa.c linux-3.2.22-g-v/arch/x86/boot/video-vesa.c
--- linux-3.2.22/arch/x86/boot/video-vesa.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/boot/video-vesa.c	2012-07-11 20:20:36.984117610 +0200
@@ -200,6 +200,7 @@ static void vesa_store_pm_info(void)
 
 	boot_params.screen_info.vesapm_seg = oreg.es;
 	boot_params.screen_info.vesapm_off = oreg.di;
+	boot_params.screen_info.vesapm_size = oreg.cx;
 }
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/aesni-intel_asm.S linux-3.2.22-g-v/arch/x86/crypto/aesni-intel_asm.S
--- linux-3.2.22/arch/x86/crypto/aesni-intel_asm.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/aesni-intel_asm.S	2012-07-11 20:20:36.987284381 +0200
@@ -31,6 +31,7 @@
 
 #include <linux/linkage.h>
 #include <asm/inst.h>
+#include <asm/alternative-asm.h>
 
 #ifdef __x86_64__
 .data
@@ -1436,7 +1437,9 @@ _return_T_done_decrypt:
 	pop	%r14
 	pop	%r13
 	pop	%r12
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_gcm_dec)
 
 
 /*****************************************************************************
@@ -1699,7 +1702,9 @@ _return_T_done_encrypt:
 	pop	%r14
 	pop	%r13
 	pop	%r12
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_gcm_enc)
 
 #endif
 
@@ -1714,6 +1719,7 @@ _key_expansion_256a:
 	pxor %xmm1, %xmm0
 	movaps %xmm0, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr_bts
 	ret
 
 .align 4
@@ -1738,6 +1744,7 @@ _key_expansion_192a:
 	shufps $0b01001110, %xmm2, %xmm1
 	movaps %xmm1, 0x10(TKEYP)
 	add $0x20, TKEYP
+	pax_force_retaddr_bts
 	ret
 
 .align 4
@@ -1757,6 +1764,7 @@ _key_expansion_192b:
 
 	movaps %xmm0, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr_bts
 	ret
 
 .align 4
@@ -1769,6 +1777,7 @@ _key_expansion_256b:
 	pxor %xmm1, %xmm2
 	movaps %xmm2, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -1881,7 +1890,9 @@ ENTRY(aesni_set_key)
 #ifndef __x86_64__
 	popl KEYP
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_set_key)
 
 /*
  * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
@@ -1902,7 +1913,9 @@ ENTRY(aesni_enc)
 	popl KLEN
 	popl KEYP
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_enc)
 
 /*
  * _aesni_enc1:		internal ABI
@@ -1959,6 +1972,7 @@ _aesni_enc1:
 	AESENC KEY STATE
 	movaps 0x70(TKEYP), KEY
 	AESENCLAST KEY STATE
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2067,6 +2081,7 @@ _aesni_enc4:
 	AESENCLAST KEY STATE2
 	AESENCLAST KEY STATE3
 	AESENCLAST KEY STATE4
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2089,7 +2104,9 @@ ENTRY(aesni_dec)
 	popl KLEN
 	popl KEYP
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_dec)
 
 /*
  * _aesni_dec1:		internal ABI
@@ -2146,6 +2163,7 @@ _aesni_dec1:
 	AESDEC KEY STATE
 	movaps 0x70(TKEYP), KEY
 	AESDECLAST KEY STATE
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2254,6 +2272,7 @@ _aesni_dec4:
 	AESDECLAST KEY STATE2
 	AESDECLAST KEY STATE3
 	AESDECLAST KEY STATE4
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2311,7 +2330,9 @@ ENTRY(aesni_ecb_enc)
 	popl KEYP
 	popl LEN
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_ecb_enc)
 
 /*
  * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
@@ -2369,7 +2390,9 @@ ENTRY(aesni_ecb_dec)
 	popl KEYP
 	popl LEN
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_ecb_dec)
 
 /*
  * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
@@ -2410,7 +2433,9 @@ ENTRY(aesni_cbc_enc)
 	popl LEN
 	popl IVP
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_cbc_enc)
 
 /*
  * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
@@ -2500,7 +2525,9 @@ ENTRY(aesni_cbc_dec)
 	popl LEN
 	popl IVP
 #endif
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_cbc_dec)
 
 #ifdef __x86_64__
 .align 16
@@ -2526,6 +2553,7 @@ _aesni_inc_init:
 	mov $1, TCTR_LOW
 	MOVQ_R64_XMM TCTR_LOW INC
 	MOVQ_R64_XMM CTR TCTR_LOW
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2554,6 +2582,7 @@ _aesni_inc:
 .Linc_low:
 	movaps CTR, IV
 	PSHUFB_XMM BSWAP_MASK IV
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -2614,5 +2643,7 @@ ENTRY(aesni_ctr_enc)
 .Lctr_enc_ret:
 	movups IV, (IVP)
 .Lctr_enc_just_ret:
+	pax_force_retaddr 0, 1
 	ret
+ENDPROC(aesni_ctr_enc)
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/aes-x86_64-asm_64.S linux-3.2.22-g-v/arch/x86/crypto/aes-x86_64-asm_64.S
--- linux-3.2.22/arch/x86/crypto/aes-x86_64-asm_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/aes-x86_64-asm_64.S	2012-07-11 20:20:36.984117610 +0200
@@ -8,6 +8,8 @@
  * including this sentence is retained in full.
  */
 
+#include <asm/alternative-asm.h>
+
 .extern crypto_ft_tab
 .extern crypto_it_tab
 .extern crypto_fl_tab
@@ -71,6 +73,8 @@ FUNC:	movq	r1,r2;			\
 	je	B192;			\
 	leaq	32(r9),r9;
 
+#define ret	pax_force_retaddr 0, 1; ret
+
 #define epilogue(r1,r2,r3,r4,r5,r6,r7,r8,r9) \
 	movq	r1,r2;			\
 	movq	r3,r4;			\
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/blowfish-x86_64-asm_64.S linux-3.2.22-g-v/arch/x86/crypto/blowfish-x86_64-asm_64.S
--- linux-3.2.22/arch/x86/crypto/blowfish-x86_64-asm_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/blowfish-x86_64-asm_64.S	2012-07-11 20:20:36.987284381 +0200
@@ -20,6 +20,8 @@
  *
  */
 
+#include <asm/alternative-asm.h>
+
 .file "blowfish-x86_64-asm.S"
 .text
 
@@ -151,9 +153,11 @@ __blowfish_enc_blk:
 	jnz __enc_xor;
 
 	write_block();
+	pax_force_retaddr 0, 1
 	ret;
 __enc_xor:
 	xor_block();
+	pax_force_retaddr 0, 1
 	ret;
 
 .align 8
@@ -188,6 +192,7 @@ blowfish_dec_blk:
 
 	movq %r11, %rbp;
 
+	pax_force_retaddr 0, 1
 	ret;
 
 /**********************************************************************
@@ -342,6 +347,7 @@ __blowfish_enc_blk_4way:
 
 	popq %rbx;
 	popq %rbp;
+	pax_force_retaddr 0, 1
 	ret;
 
 __enc_xor4:
@@ -349,6 +355,7 @@ __enc_xor4:
 
 	popq %rbx;
 	popq %rbp;
+	pax_force_retaddr 0, 1
 	ret;
 
 .align 8
@@ -386,5 +393,6 @@ blowfish_dec_blk_4way:
 	popq %rbx;
 	popq %rbp;
 
+	pax_force_retaddr 0, 1
 	ret;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/salsa20-x86_64-asm_64.S linux-3.2.22-g-v/arch/x86/crypto/salsa20-x86_64-asm_64.S
--- linux-3.2.22/arch/x86/crypto/salsa20-x86_64-asm_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/salsa20-x86_64-asm_64.S	2012-07-11 20:20:36.987284381 +0200
@@ -1,3 +1,5 @@
+#include <asm/alternative-asm.h>
+
 # enter ECRYPT_encrypt_bytes
 .text
 .p2align 5
@@ -790,6 +792,7 @@ ECRYPT_encrypt_bytes:
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr 0, 1
 	ret
 #   bytesatleast65:
 ._bytesatleast65:
@@ -891,6 +894,7 @@ ECRYPT_keysetup:
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr
 	ret
 # enter ECRYPT_ivsetup
 .text
@@ -917,4 +921,5 @@ ECRYPT_ivsetup:
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr
 	ret
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/sha1_ssse3_asm.S linux-3.2.22-g-v/arch/x86/crypto/sha1_ssse3_asm.S
--- linux-3.2.22/arch/x86/crypto/sha1_ssse3_asm.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/sha1_ssse3_asm.S	2012-07-11 20:20:36.987284381 +0200
@@ -28,6 +28,8 @@
  * (at your option) any later version.
  */
 
+#include <asm/alternative-asm.h>
+
 #define CTX	%rdi	// arg1
 #define BUF	%rsi	// arg2
 #define CNT	%rdx	// arg3
@@ -104,6 +106,7 @@
 	pop	%r12
 	pop	%rbp
 	pop	%rbx
+	pax_force_retaddr 0, 1
 	ret
 
 	.size	\name, .-\name
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/twofish-x86_64-asm_64-3way.S linux-3.2.22-g-v/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
--- linux-3.2.22/arch/x86/crypto/twofish-x86_64-asm_64-3way.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/twofish-x86_64-asm_64-3way.S	2012-07-11 20:20:36.990783661 +0200
@@ -20,6 +20,8 @@
  *
  */
 
+#include <asm/alternative-asm.h>
+
 .file "twofish-x86_64-asm-3way.S"
 .text
 
@@ -260,6 +262,7 @@ __twofish_enc_blk_3way:
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr 0, 1
 	ret;
 
 __enc_xor3:
@@ -271,6 +274,7 @@ __enc_xor3:
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr 0, 1
 	ret;
 
 .global twofish_dec_blk_3way
@@ -312,5 +316,6 @@ twofish_dec_blk_3way:
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr 0, 1
 	ret;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/crypto/twofish-x86_64-asm_64.S linux-3.2.22-g-v/arch/x86/crypto/twofish-x86_64-asm_64.S
--- linux-3.2.22/arch/x86/crypto/twofish-x86_64-asm_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/crypto/twofish-x86_64-asm_64.S	2012-07-11 20:20:36.990783661 +0200
@@ -21,6 +21,7 @@
 .text
 
 #include <asm/asm-offsets.h>
+#include <asm/alternative-asm.h>
 
 #define a_offset	0
 #define b_offset	4
@@ -268,6 +269,7 @@ twofish_enc_blk:
 
 	popq	R1
 	movq	$1,%rax
+	pax_force_retaddr 0, 1
 	ret
 
 twofish_dec_blk:
@@ -319,4 +321,5 @@ twofish_dec_blk:
 
 	popq	R1
 	movq	$1,%rax
+	pax_force_retaddr 0, 1
 	ret
diff -NurpP --minimal linux-3.2.22/arch/x86/ia32/ia32_aout.c linux-3.2.22-g-v/arch/x86/ia32/ia32_aout.c
--- linux-3.2.22/arch/x86/ia32/ia32_aout.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/ia32/ia32_aout.c	2012-07-11 20:20:36.990783661 +0200
@@ -162,6 +162,8 @@ static int aout_core_dump(long signr, st
 	unsigned long dump_start, dump_size;
 	struct user32 dump;
 
+	memset(&dump, 0, sizeof(dump));
+
 	fs = get_fs();
 	set_fs(KERNEL_DS);
 	has_dumped = 1;
@@ -315,6 +317,13 @@ static int load_aout_binary(struct linux
 	current->mm->free_area_cache = TASK_UNMAPPED_BASE;
 	current->mm->cached_hole_size = 0;
 
+	retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT);
+	if (retval < 0) {
+		/* Someone check-me: is this error path enough? */
+		send_sig(SIGKILL, current, 0);
+		return retval;
+	}
+
 	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 
@@ -410,13 +419,6 @@ beyond_if:
 
 	set_brk(current->mm->start_brk, current->mm->brk);
 
-	retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT);
-	if (retval < 0) {
-		/* Someone check-me: is this error path enough? */
-		send_sig(SIGKILL, current, 0);
-		return retval;
-	}
-
 	current->mm->start_stack =
 		(unsigned long)create_aout_tables((char __user *)bprm->p, bprm);
 	/* start thread */
diff -NurpP --minimal linux-3.2.22/arch/x86/ia32/ia32entry.S linux-3.2.22-g-v/arch/x86/ia32/ia32entry.S
--- linux-3.2.22/arch/x86/ia32/ia32entry.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/ia32/ia32entry.S	2012-07-11 20:20:45.337449722 +0200
@@ -13,7 +13,9 @@
 #include <asm/thread_info.h>	
 #include <asm/segment.h>
 #include <asm/irqflags.h>
+#include <asm/pgtable.h>
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -95,6 +97,32 @@ ENTRY(native_irq_enable_sysexit)
 ENDPROC(native_irq_enable_sysexit)
 #endif
 
+	.macro pax_enter_kernel_user
+	pax_set_fptr_mask
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_enter_kernel_user
+#endif
+	.endm
+
+	.macro pax_exit_kernel_user
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_exit_kernel_user
+#endif
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushq %rax
+	pushq %r11
+	call pax_randomize_kstack
+	popq %r11
+	popq %rax
+#endif
+	.endm
+
+.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+.endm
+
 /*
  * 32bit SYSENTER instruction entry.
  *
@@ -121,12 +149,6 @@ ENTRY(ia32_sysenter_target)
 	CFI_REGISTER	rsp,rbp
 	SWAPGS_UNSAFE_STACK
 	movq	PER_CPU_VAR(kernel_stack), %rsp
-	addq	$(KERNEL_STACK_OFFSET),%rsp
-	/*
-	 * No need to follow this irqs on/off section: the syscall
-	 * disabled irqs, here we enable it straight after entry:
-	 */
-	ENABLE_INTERRUPTS(CLBR_NONE)
  	movl	%ebp,%ebp		/* zero extension */
 	pushq_cfi $__USER32_DS
 	/*CFI_REL_OFFSET ss,0*/
@@ -134,25 +156,39 @@ ENTRY(ia32_sysenter_target)
 	CFI_REL_OFFSET rsp,0
 	pushfq_cfi
 	/*CFI_REL_OFFSET rflags,0*/
-	movl	8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
-	CFI_REGISTER rip,r10
+	orl	$X86_EFLAGS_IF,(%rsp)
+	GET_THREAD_INFO(%r11)
+	movl	TI_sysenter_return(%r11), %r11d
+	CFI_REGISTER rip,r11
 	pushq_cfi $__USER32_CS
 	/*CFI_REL_OFFSET cs,0*/
 	movl	%eax, %eax
-	pushq_cfi %r10
+	pushq_cfi %r11
 	CFI_REL_OFFSET rip,0
 	pushq_cfi %rax
 	cld
 	SAVE_ARGS 0,1,0
+	pax_enter_kernel_user
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs, here we enable it straight after entry:
+	 */
+	ENABLE_INTERRUPTS(CLBR_NONE)
  	/* no need to do an access_ok check here because rbp has been
  	   32bit zero extended */ 
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov $PAX_USER_SHADOW_BASE,%r11
+	add %r11,%rbp
+#endif
+
 1:	movl	(%rbp),%ebp
  	.section __ex_table,"a"
  	.quad 1b,ia32_badarg
  	.previous	
-	GET_THREAD_INFO(%r10)
-	orl    $TS_COMPAT,TI_status(%r10)
-	testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
+	GET_THREAD_INFO(%r11)
+	orl    $TS_COMPAT,TI_status(%r11)
+	testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	CFI_REMEMBER_STATE
 	jnz  sysenter_tracesys
 	cmpq	$(IA32_NR_syscalls-1),%rax
@@ -162,13 +198,15 @@ sysenter_do_call:
 sysenter_dispatch:
 	call	*ia32_sys_call_table(,%rax,8)
 	movq	%rax,RAX-ARGOFFSET(%rsp)
-	GET_THREAD_INFO(%r10)
+	GET_THREAD_INFO(%r11)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl	$_TIF_ALLWORK_MASK,TI_flags(%r10)
+	testl	$_TIF_ALLWORK_MASK,TI_flags(%r11)
 	jnz	sysexit_audit
 sysexit_from_sys_call:
-	andl    $~TS_COMPAT,TI_status(%r10)
+	pax_exit_kernel_user
+	pax_erase_kstack
+	andl    $~TS_COMPAT,TI_status(%r11)
 	/* clear IF, that popfq doesn't enable interrupts early */
 	andl  $~0x200,EFLAGS-R11(%rsp) 
 	movl	RIP-R11(%rsp),%edx		/* User %eip */
@@ -194,6 +232,9 @@ sysexit_from_sys_call:
 	movl %eax,%esi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */
 	call audit_syscall_entry
+
+	pax_erase_kstack
+
 	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja ia32_badsys
@@ -205,7 +246,7 @@ sysexit_from_sys_call:
 	.endm
 
 	.macro auditsys_exit exit
-	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jnz ia32_ret_from_sys_call
 	TRACE_IRQS_ON
 	sti
@@ -215,12 +256,12 @@ sysexit_from_sys_call:
 	movzbl %al,%edi		/* zero-extend that into %edi */
 	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
 	call audit_syscall_exit
-	GET_THREAD_INFO(%r10)
+	GET_THREAD_INFO(%r11)
 	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall return value */
 	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
 	cli
 	TRACE_IRQS_OFF
-	testl %edi,TI_flags(%r10)
+	testl %edi,TI_flags(%r11)
 	jz \exit
 	CLEAR_RREGS -ARGOFFSET
 	jmp int_with_check
@@ -238,7 +279,7 @@ sysexit_audit:
 
 sysenter_tracesys:
 #ifdef CONFIG_AUDITSYSCALL
-	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jz	sysenter_auditsys
 #endif
 	SAVE_REST
@@ -246,6 +287,9 @@ sysenter_tracesys:
 	movq	$-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */
 	movq	%rsp,%rdi        /* &pt_regs -> arg1 */
 	call	syscall_trace_enter
+
+	pax_erase_kstack
+
 	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
 	RESTORE_REST
 	cmpq	$(IA32_NR_syscalls-1),%rax
@@ -277,19 +321,20 @@ ENDPROC(ia32_sysenter_target)
 ENTRY(ia32_cstar_target)
 	CFI_STARTPROC32	simple
 	CFI_SIGNAL_FRAME
-	CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET
+	CFI_DEF_CFA	rsp,0
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	SWAPGS_UNSAFE_STACK
 	movl	%esp,%r8d
 	CFI_REGISTER	rsp,r8
 	movq	PER_CPU_VAR(kernel_stack),%rsp
+	SAVE_ARGS 8*6,0,0
+	pax_enter_kernel_user
 	/*
 	 * No need to follow this irqs on/off section: the syscall
 	 * disabled irqs and here we enable it straight after entry:
 	 */
 	ENABLE_INTERRUPTS(CLBR_NONE)
-	SAVE_ARGS 8,0,0
 	movl 	%eax,%eax	/* zero extension */
 	movq	%rax,ORIG_RAX-ARGOFFSET(%rsp)
 	movq	%rcx,RIP-ARGOFFSET(%rsp)
@@ -305,13 +350,19 @@ ENTRY(ia32_cstar_target)
 	/* no need to do an access_ok check here because r8 has been
 	   32bit zero extended */ 
 	/* hardware stack frame is complete now */	
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov $PAX_USER_SHADOW_BASE,%r11
+	add %r11,%r8
+#endif
+
 1:	movl	(%r8),%r9d
 	.section __ex_table,"a"
 	.quad 1b,ia32_badarg
 	.previous	
-	GET_THREAD_INFO(%r10)
-	orl   $TS_COMPAT,TI_status(%r10)
-	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
+	GET_THREAD_INFO(%r11)
+	orl   $TS_COMPAT,TI_status(%r11)
+	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	CFI_REMEMBER_STATE
 	jnz   cstar_tracesys
 	cmpq $IA32_NR_syscalls-1,%rax
@@ -321,13 +372,15 @@ cstar_do_call:
 cstar_dispatch:
 	call *ia32_sys_call_table(,%rax,8)
 	movq %rax,RAX-ARGOFFSET(%rsp)
-	GET_THREAD_INFO(%r10)
+	GET_THREAD_INFO(%r11)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
+	testl $_TIF_ALLWORK_MASK,TI_flags(%r11)
 	jnz sysretl_audit
 sysretl_from_sys_call:
-	andl $~TS_COMPAT,TI_status(%r10)
+	pax_exit_kernel_user
+	pax_erase_kstack
+	andl $~TS_COMPAT,TI_status(%r11)
 	RESTORE_ARGS 0,-ARG_SKIP,0,0,0
 	movl RIP-ARGOFFSET(%rsp),%ecx
 	CFI_REGISTER rip,rcx
@@ -355,7 +408,7 @@ sysretl_audit:
 
 cstar_tracesys:
 #ifdef CONFIG_AUDITSYSCALL
-	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
+	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jz cstar_auditsys
 #endif
 	xchgl %r9d,%ebp
@@ -364,6 +417,9 @@ cstar_tracesys:
 	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
 	movq %rsp,%rdi        /* &pt_regs -> arg1 */
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	LOAD_ARGS32 ARGOFFSET, 1  /* reload args from stack in case ptrace changed it */
 	RESTORE_REST
 	xchgl %ebp,%r9d
@@ -409,20 +465,21 @@ ENTRY(ia32_syscall)
 	CFI_REL_OFFSET	rip,RIP-RIP
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	SWAPGS
-	/*
-	 * No need to follow this irqs on/off section: the syscall
-	 * disabled irqs and here we enable it straight after entry:
-	 */
-	ENABLE_INTERRUPTS(CLBR_NONE)
 	movl %eax,%eax
 	pushq_cfi %rax
 	cld
 	/* note the registers are not zero extended to the sf.
 	   this could be a problem. */
 	SAVE_ARGS 0,1,0
-	GET_THREAD_INFO(%r10)
-	orl   $TS_COMPAT,TI_status(%r10)
-	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
+	pax_enter_kernel_user
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs and here we enable it straight after entry:
+	 */
+	ENABLE_INTERRUPTS(CLBR_NONE)
+	GET_THREAD_INFO(%r11)
+	orl   $TS_COMPAT,TI_status(%r11)
+	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	jnz ia32_tracesys
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja ia32_badsys
@@ -441,6 +498,9 @@ ia32_tracesys:			 
 	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
 	movq %rsp,%rdi        /* &pt_regs -> arg1 */
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
 	RESTORE_REST
 	cmpq $(IA32_NR_syscalls-1),%rax
@@ -455,6 +515,7 @@ ia32_badsys:
 
 quiet_ni_syscall:
 	movq $-ENOSYS,%rax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 	
@@ -776,7 +837,7 @@ ia32_sys_call_table:
 	.quad sys_tgkill		/* 270 */
 	.quad compat_sys_utimes
 	.quad sys32_fadvise64_64
-	.quad quiet_ni_syscall	/* sys_vserver */
+	.quad sys32_vserver
 	.quad sys_mbind
 	.quad compat_sys_get_mempolicy	/* 275 */
 	.quad sys_set_mempolicy
diff -NurpP --minimal linux-3.2.22/arch/x86/ia32/ia32_signal.c linux-3.2.22-g-v/arch/x86/ia32/ia32_signal.c
--- linux-3.2.22/arch/x86/ia32/ia32_signal.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/ia32/ia32_signal.c	2012-07-11 20:20:36.990783661 +0200
@@ -169,7 +169,7 @@ asmlinkage long sys32_sigaltstack(const 
 	}
 	seg = get_fs();
 	set_fs(KERNEL_DS);
-	ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp);
+	ret = do_sigaltstack(uss_ptr ? (const stack_t __force_user *)&uss : NULL, (stack_t __force_user *)&uoss, regs->sp);
 	set_fs(seg);
 	if (ret >= 0 && uoss_ptr)  {
 		if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t)))
@@ -370,7 +370,7 @@ static int ia32_setup_sigcontext(struct 
  */
 static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
 				 size_t frame_size,
-				 void **fpstate)
+				 void __user **fpstate)
 {
 	unsigned long sp;
 
@@ -391,7 +391,7 @@ static void __user *get_sigframe(struct 
 
 	if (used_math()) {
 		sp = sp - sig_xstate_ia32_size;
-		*fpstate = (struct _fpstate_ia32 *) sp;
+		*fpstate = (struct _fpstate_ia32 __user *) sp;
 		if (save_i387_xstate_ia32(*fpstate) < 0)
 			return (void __user *) -1L;
 	}
@@ -399,7 +399,7 @@ static void __user *get_sigframe(struct 
 	sp -= frame_size;
 	/* Align the stack pointer according to the i386 ABI,
 	 * i.e. so that on function entry ((sp + 4) & 15) == 0. */
-	sp = ((sp + 4) & -16ul) - 4;
+	sp = ((sp - 12) & -16ul) - 4;
 	return (void __user *) sp;
 }
 
@@ -457,7 +457,7 @@ int ia32_setup_frame(int sig, struct k_s
 		 * These are actually not used anymore, but left because some
 		 * gdb versions depend on them as a marker.
 		 */
-		put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
+		put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 
 	if (err)
@@ -499,7 +499,7 @@ int ia32_setup_rt_frame(int sig, struct 
 		0xb8,
 		__NR_ia32_rt_sigreturn,
 		0x80cd,
-		0,
+		0
 	};
 
 	frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
@@ -529,16 +529,18 @@ int ia32_setup_rt_frame(int sig, struct 
 
 		if (ka->sa.sa_flags & SA_RESTORER)
 			restorer = ka->sa.sa_restorer;
+		else if (current->mm->context.vdso)
+			/* Return stub is in 32bit vsyscall page */
+			restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
 		else
-			restorer = VDSO32_SYMBOL(current->mm->context.vdso,
-						 rt_sigreturn);
+			restorer = &frame->retcode;
 		put_user_ex(ptr_to_compat(restorer), &frame->pretcode);
 
 		/*
 		 * Not actually used anymore, but left because some gdb
 		 * versions need it.
 		 */
-		put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
+		put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 
 	if (err)
diff -NurpP --minimal linux-3.2.22/arch/x86/ia32/sys_ia32.c linux-3.2.22-g-v/arch/x86/ia32/sys_ia32.c
--- linux-3.2.22/arch/x86/ia32/sys_ia32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/ia32/sys_ia32.c	2012-07-11 20:20:36.994117565 +0200
@@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsign
  */
 static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
 {
-	typeof(ubuf->st_uid) uid = 0;
-	typeof(ubuf->st_gid) gid = 0;
+	typeof(((struct stat64 *)0)->st_uid) uid = 0;
+	typeof(((struct stat64 *)0)->st_gid) gid = 0;
 	SET_UID(uid, stat->uid);
 	SET_GID(gid, stat->gid);
 	if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
@@ -308,8 +308,8 @@ asmlinkage long sys32_rt_sigprocmask(int
 	}
 	set_fs(KERNEL_DS);
 	ret = sys_rt_sigprocmask(how,
-				 set ? (sigset_t __user *)&s : NULL,
-				 oset ? (sigset_t __user *)&s : NULL,
+				 set ? (sigset_t __force_user *)&s : NULL,
+				 oset ? (sigset_t __force_user *)&s : NULL,
 				 sigsetsize);
 	set_fs(old_fs);
 	if (ret)
@@ -332,7 +332,7 @@ asmlinkage long sys32_alarm(unsigned int
 	return alarm_setitimer(seconds);
 }
 
-asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
+asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int __user *stat_addr,
 			      int options)
 {
 	return compat_sys_wait4(pid, stat_addr, options, NULL);
@@ -353,7 +353,7 @@ asmlinkage long sys32_sched_rr_get_inter
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(KERNEL_DS);
-	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
+	ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t);
 	set_fs(old_fs);
 	if (put_compat_timespec(&t, interval))
 		return -EFAULT;
@@ -369,7 +369,7 @@ asmlinkage long sys32_rt_sigpending(comp
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(KERNEL_DS);
-	ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize);
+	ret = sys_rt_sigpending((sigset_t __force_user *)&s, sigsetsize);
 	set_fs(old_fs);
 	if (!ret) {
 		switch (_NSIG_WORDS) {
@@ -394,7 +394,7 @@ asmlinkage long sys32_rt_sigqueueinfo(in
 	if (copy_siginfo_from_user32(&info, uinfo))
 		return -EFAULT;
 	set_fs(KERNEL_DS);
-	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
+	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force_user *)&info);
 	set_fs(old_fs);
 	return ret;
 }
@@ -439,7 +439,7 @@ asmlinkage long sys32_sendfile(int out_f
 		return -EFAULT;
 
 	set_fs(KERNEL_DS);
-	ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL,
+	ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __force_user *)&of : NULL,
 			   count);
 	set_fs(old_fs);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/alternative-asm.h linux-3.2.22-g-v/arch/x86/include/asm/alternative-asm.h
--- linux-3.2.22/arch/x86/include/asm/alternative-asm.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/alternative-asm.h	2012-07-11 20:20:36.994117565 +0200
@@ -4,10 +4,10 @@
 
 #ifdef CONFIG_SMP
 	.macro LOCK_PREFIX
-1:	lock
+672:	lock
 	.section .smp_locks,"a"
 	.balign 4
-	.long 1b - .
+	.long 672b - .
 	.previous
 	.endm
 #else
@@ -15,6 +15,45 @@
 	.endm
 #endif
 
+#ifdef KERNEXEC_PLUGIN
+	.macro pax_force_retaddr_bts rip=0
+	btsq $63,\rip(%rsp)
+	.endm
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
+	.macro pax_force_retaddr rip=0, reload=0
+	btsq $63,\rip(%rsp)
+	.endm
+	.macro pax_force_fptr ptr
+	btsq $63,\ptr
+	.endm
+	.macro pax_set_fptr_mask
+	.endm
+#endif
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	.macro pax_force_retaddr rip=0, reload=0
+	.if \reload
+	pax_set_fptr_mask
+	.endif
+	orq %r10,\rip(%rsp)
+	.endm
+	.macro pax_force_fptr ptr
+	orq %r10,\ptr
+	.endm
+	.macro pax_set_fptr_mask
+	movabs $0x8000000000000000,%r10
+	.endm
+#endif
+#else
+	.macro pax_force_retaddr rip=0, reload=0
+	.endm
+	.macro pax_force_fptr ptr
+	.endm
+	.macro pax_force_retaddr_bts rip=0
+	.endm
+	.macro pax_set_fptr_mask
+	.endm
+#endif
+
 .macro altinstruction_entry orig alt feature orig_len alt_len
 	.long \orig - .
 	.long \alt - .
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/alternative.h linux-3.2.22-g-v/arch/x86/include/asm/alternative.h
--- linux-3.2.22/arch/x86/include/asm/alternative.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/alternative.h	2012-07-11 20:20:36.994117565 +0200
@@ -89,7 +89,7 @@ static inline int alternatives_text_rese
       ".section .discard,\"aw\",@progbits\n"				\
       "	 .byte 0xff + (664f-663f) - (662b-661b)\n" /* rlen <= slen */	\
       ".previous\n"							\
-      ".section .altinstr_replacement, \"ax\"\n"			\
+      ".section .altinstr_replacement, \"a\"\n"			\
       "663:\n\t" newinstr "\n664:\n"		/* replacement     */	\
       ".previous"
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/apic.h linux-3.2.22-g-v/arch/x86/include/asm/apic.h
--- linux-3.2.22/arch/x86/include/asm/apic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/apic.h	2012-07-11 20:20:36.994117565 +0200
@@ -45,7 +45,7 @@ static inline void generic_apic_probe(vo
 
 #ifdef CONFIG_X86_LOCAL_APIC
 
-extern unsigned int apic_verbosity;
+extern int apic_verbosity;
 extern int local_apic_timer_c2_ok;
 
 extern int disable_apic;
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/apm.h linux-3.2.22-g-v/arch/x86/include/asm/apm.h
--- linux-3.2.22/arch/x86/include/asm/apm.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/apm.h	2012-07-11 20:20:36.994117565 +0200
@@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32
 	__asm__ __volatile__(APM_DO_ZERO_SEGS
 		"pushl %%edi\n\t"
 		"pushl %%ebp\n\t"
-		"lcall *%%cs:apm_bios_entry\n\t"
+		"lcall *%%ss:apm_bios_entry\n\t"
 		"setc %%al\n\t"
 		"popl %%ebp\n\t"
 		"popl %%edi\n\t"
@@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_as
 	__asm__ __volatile__(APM_DO_ZERO_SEGS
 		"pushl %%edi\n\t"
 		"pushl %%ebp\n\t"
-		"lcall *%%cs:apm_bios_entry\n\t"
+		"lcall *%%ss:apm_bios_entry\n\t"
 		"setc %%bl\n\t"
 		"popl %%ebp\n\t"
 		"popl %%edi\n\t"
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/atomic64_32.h linux-3.2.22-g-v/arch/x86/include/asm/atomic64_32.h
--- linux-3.2.22/arch/x86/include/asm/atomic64_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/atomic64_32.h	2012-07-11 20:20:36.997450440 +0200
@@ -12,6 +12,14 @@ typedef struct {
 	u64 __aligned(8) counter;
 } atomic64_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	u64 __aligned(8) counter;
+} atomic64_unchecked_t;
+#else
+typedef atomic64_t atomic64_unchecked_t;
+#endif
+
 #define ATOMIC64_INIT(val)	{ (val) }
 
 #ifdef CONFIG_X86_CMPXCHG64
@@ -38,6 +46,21 @@ static inline long long atomic64_cmpxchg
 }
 
 /**
+ * atomic64_cmpxchg_unchecked - cmpxchg atomic64 variable
+ * @p: pointer to type atomic64_unchecked_t
+ * @o: expected value
+ * @n: new value
+ *
+ * Atomically sets @v to @n if it was equal to @o and returns
+ * the old value.
+ */
+
+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long long o, long long n)
+{
+	return cmpxchg64(&v->counter, o, n);
+}
+
+/**
  * atomic64_xchg - xchg atomic64 variable
  * @v: pointer to type atomic64_t
  * @n: value to assign
@@ -77,6 +100,24 @@ static inline void atomic64_set(atomic64
 }
 
 /**
+ * atomic64_set_unchecked - set atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ * @n: value to assign
+ *
+ * Atomically sets the value of @v to @n.
+ */
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
+{
+	unsigned high = (unsigned)(i >> 32);
+	unsigned low = (unsigned)i;
+	asm volatile(ATOMIC64_ALTERNATIVE(set)
+		     : "+b" (low), "+c" (high)
+		     : "S" (v)
+		     : "eax", "edx", "memory"
+		     );
+}
+
+/**
  * atomic64_read - read atomic64 variable
  * @v: pointer to type atomic64_t
  *
@@ -93,6 +134,22 @@ static inline long long atomic64_read(at
  }
 
 /**
+ * atomic64_read_unchecked - read atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically reads the value of @v and returns it.
+ */
+static inline long long atomic64_read_unchecked(atomic64_unchecked_t *v)
+{
+	long long r;
+	asm volatile(ATOMIC64_ALTERNATIVE(read_unchecked)
+		     : "=A" (r), "+c" (v)
+		     : : "memory"
+		     );
+	return r;
+ }
+
+/**
  * atomic64_add_return - add and return
  * @i: integer value to add
  * @v: pointer to type atomic64_t
@@ -108,6 +165,22 @@ static inline long long atomic64_add_ret
 	return i;
 }
 
+/**
+ * atomic64_add_return_unchecked - add and return
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + *@v
+ */
+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	asm volatile(ATOMIC64_ALTERNATIVE(add_return_unchecked)
+		     : "+A" (i), "+c" (v)
+		     : : "memory"
+		     );
+	return i;
+}
+
 /*
  * Other variants with different arithmetic operators:
  */
@@ -131,6 +204,17 @@ static inline long long atomic64_inc_ret
 	return a;
 }
 
+static inline long long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	long long a;
+	asm volatile(ATOMIC64_ALTERNATIVE(inc_return_unchecked)
+		     : "=A" (a)
+		     : "S" (v)
+		     : "memory", "ecx"
+		     );
+	return a;
+}
+
 static inline long long atomic64_dec_return(atomic64_t *v)
 {
 	long long a;
@@ -159,6 +243,22 @@ static inline long long atomic64_add(lon
 }
 
 /**
+ * atomic64_add_unchecked - add integer to atomic64 variable
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline long long atomic64_add_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	asm volatile(ATOMIC64_ALTERNATIVE_(add_unchecked, add_return_unchecked)
+		     : "+A" (i), "+c" (v)
+		     : : "memory"
+		     );
+	return i;
+}
+
+/**
  * atomic64_sub - subtract the atomic64 variable
  * @i: integer value to subtract
  * @v: pointer to type atomic64_t
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/atomic64_64.h linux-3.2.22-g-v/arch/x86/include/asm/atomic64_64.h
--- linux-3.2.22/arch/x86/include/asm/atomic64_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/atomic64_64.h	2012-07-11 20:20:36.997450440 +0200
@@ -18,7 +18,19 @@
  */
 static inline long atomic64_read(const atomic64_t *v)
 {
-	return (*(volatile long *)&(v)->counter);
+	return (*(volatile const long *)&(v)->counter);
+}
+
+/**
+ * atomic64_read_unchecked - read atomic64 variable
+ * @v: pointer of type atomic64_unchecked_t
+ *
+ * Atomically reads the value of @v.
+ * Doesn't imply a read memory barrier.
+ */
+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	return (*(volatile const long *)&(v)->counter);
 }
 
 /**
@@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64
 }
 
 /**
+ * atomic64_set_unchecked - set atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
+{
+	v->counter = i;
+}
+
+/**
  * atomic64_add - add integer to atomic64 variable
  * @i: integer value to add
  * @v: pointer to type atomic64_t
@@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64
  */
 static inline void atomic64_add(long i, atomic64_t *v)
 {
+	asm volatile(LOCK_PREFIX "addq %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subq %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "er" (i), "m" (v->counter));
+}
+
+/**
+ * atomic64_add_unchecked - add integer to atomic64 variable
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v)
+{
 	asm volatile(LOCK_PREFIX "addq %1,%0"
 		     : "=m" (v->counter)
 		     : "er" (i), "m" (v->counter));
@@ -56,7 +102,29 @@ static inline void atomic64_add(long i, 
  */
 static inline void atomic64_sub(long i, atomic64_t *v)
 {
-	asm volatile(LOCK_PREFIX "subq %1,%0"
+	asm volatile(LOCK_PREFIX "subq %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addq %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "er" (i), "m" (v->counter));
+}
+
+/**
+ * atomic64_sub_unchecked - subtract the atomic64 variable
+ * @i: integer value to subtract
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "subq %1,%0\n"
 		     : "=m" (v->counter)
 		     : "er" (i), "m" (v->counter));
 }
@@ -74,7 +142,16 @@ static inline int atomic64_sub_and_test(
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "subq %2,%0; sete %1"
+	asm volatile(LOCK_PREFIX "subq %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addq %2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "=m" (v->counter), "=qm" (c)
 		     : "er" (i), "m" (v->counter) : "memory");
 	return c;
@@ -88,6 +165,27 @@ static inline int atomic64_sub_and_test(
  */
 static inline void atomic64_inc(atomic64_t *v)
 {
+	asm volatile(LOCK_PREFIX "incq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "m" (v->counter));
+}
+
+/**
+ * atomic64_inc_unchecked - increment atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically increments @v by 1.
+ */
+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
+{
 	asm volatile(LOCK_PREFIX "incq %0"
 		     : "=m" (v->counter)
 		     : "m" (v->counter));
@@ -101,7 +199,28 @@ static inline void atomic64_inc(atomic64
  */
 static inline void atomic64_dec(atomic64_t *v)
 {
-	asm volatile(LOCK_PREFIX "decq %0"
+	asm volatile(LOCK_PREFIX "decq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "m" (v->counter));
+}
+
+/**
+ * atomic64_dec_unchecked - decrement atomic64 variable
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically decrements @v by 1.
+ */
+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "decq %0\n"
 		     : "=m" (v->counter)
 		     : "m" (v->counter));
 }
@@ -118,7 +237,16 @@ static inline int atomic64_dec_and_test(
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "decq %0; sete %1"
+	asm volatile(LOCK_PREFIX "decq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "=m" (v->counter), "=qm" (c)
 		     : "m" (v->counter) : "memory");
 	return c != 0;
@@ -136,7 +264,16 @@ static inline int atomic64_inc_and_test(
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "incq %0; sete %1"
+	asm volatile(LOCK_PREFIX "incq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "=m" (v->counter), "=qm" (c)
 		     : "m" (v->counter) : "memory");
 	return c != 0;
@@ -155,7 +292,16 @@ static inline int atomic64_add_negative(
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "addq %2,%0; sets %1"
+	asm volatile(LOCK_PREFIX "addq %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subq %2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sets %1\n"
 		     : "=m" (v->counter), "=qm" (c)
 		     : "er" (i), "m" (v->counter) : "memory");
 	return c;
@@ -170,6 +316,18 @@ static inline int atomic64_add_negative(
  */
 static inline long atomic64_add_return(long i, atomic64_t *v)
 {
+	return i + xadd_check_overflow(&v->counter, i);
+}
+
+/**
+ * atomic64_add_return_unchecked - add and return
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + @v
+ */
+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
+{
 	return i + xadd(&v->counter, i);
 }
 
@@ -179,6 +337,10 @@ static inline long atomic64_sub_return(l
 }
 
 #define atomic64_inc_return(v)  (atomic64_add_return(1, (v)))
+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	return atomic64_add_return_unchecked(1, v);
+}
 #define atomic64_dec_return(v)  (atomic64_sub_return(1, (v)))
 
 static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
@@ -186,6 +348,11 @@ static inline long atomic64_cmpxchg(atom
 	return cmpxchg(&v->counter, old, new);
 }
 
+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
 static inline long atomic64_xchg(atomic64_t *v, long new)
 {
 	return xchg(&v->counter, new);
@@ -202,17 +369,30 @@ static inline long atomic64_xchg(atomic6
  */
 static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
 {
-	long c, old;
+	long c, old, new;
 	c = atomic64_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic64_cmpxchg((v), c, c + (a));
+
+		asm volatile("add %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "sub %2,%0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a));
+
+		old = atomic64_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
 	}
-	return c != (u);
+	return c != u;
 }
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/atomic.h linux-3.2.22-g-v/arch/x86/include/asm/atomic.h
--- linux-3.2.22/arch/x86/include/asm/atomic.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/atomic.h	2012-07-11 20:20:36.997450440 +0200
@@ -22,7 +22,18 @@
  */
 static inline int atomic_read(const atomic_t *v)
 {
-	return (*(volatile int *)&(v)->counter);
+	return (*(volatile const int *)&(v)->counter);
+}
+
+/**
+ * atomic_read_unchecked - read atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically reads the value of @v.
+ */
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return (*(volatile const int *)&(v)->counter);
 }
 
 /**
@@ -38,6 +49,18 @@ static inline void atomic_set(atomic_t *
 }
 
 /**
+ * atomic_set_unchecked - set atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
+
+/**
  * atomic_add - add integer to atomic variable
  * @i: integer value to add
  * @v: pointer of type atomic_t
@@ -46,7 +69,29 @@ static inline void atomic_set(atomic_t *
  */
 static inline void atomic_add(int i, atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "addl %1,%0"
+	asm volatile(LOCK_PREFIX "addl %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subl %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter)
+		     : "ir" (i));
+}
+
+/**
+ * atomic_add_unchecked - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "addl %1,%0\n"
 		     : "+m" (v->counter)
 		     : "ir" (i));
 }
@@ -60,7 +105,29 @@ static inline void atomic_add(int i, ato
  */
 static inline void atomic_sub(int i, atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "subl %1,%0"
+	asm volatile(LOCK_PREFIX "subl %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addl %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter)
+		     : "ir" (i));
+}
+
+/**
+ * atomic_sub_unchecked - subtract integer from atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "subl %1,%0\n"
 		     : "+m" (v->counter)
 		     : "ir" (i));
 }
@@ -78,7 +145,16 @@ static inline int atomic_sub_and_test(in
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "subl %2,%0; sete %1"
+	asm volatile(LOCK_PREFIX "subl %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addl %2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "+m" (v->counter), "=qm" (c)
 		     : "ir" (i) : "memory");
 	return c;
@@ -92,7 +168,27 @@ static inline int atomic_sub_and_test(in
  */
 static inline void atomic_inc(atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "incl %0"
+	asm volatile(LOCK_PREFIX "incl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter));
+}
+
+/**
+ * atomic_inc_unchecked - increment atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically increments @v by 1.
+ */
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "incl %0\n"
 		     : "+m" (v->counter));
 }
 
@@ -104,7 +200,27 @@ static inline void atomic_inc(atomic_t *
  */
 static inline void atomic_dec(atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "decl %0"
+	asm volatile(LOCK_PREFIX "decl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter));
+}
+
+/**
+ * atomic_dec_unchecked - decrement atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically decrements @v by 1.
+ */
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "decl %0\n"
 		     : "+m" (v->counter));
 }
 
@@ -120,7 +236,16 @@ static inline int atomic_dec_and_test(at
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "decl %0; sete %1"
+	asm volatile(LOCK_PREFIX "decl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "+m" (v->counter), "=qm" (c)
 		     : : "memory");
 	return c != 0;
@@ -138,7 +263,35 @@ static inline int atomic_inc_and_test(at
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "incl %0; sete %1"
+	asm volatile(LOCK_PREFIX "incl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
+		     : "+m" (v->counter), "=qm" (c)
+		     : : "memory");
+	return c != 0;
+}
+
+/**
+ * atomic_inc_and_test_unchecked - increment and test
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	unsigned char c;
+
+	asm volatile(LOCK_PREFIX "incl %0\n"
+		     "sete %1\n"
 		     : "+m" (v->counter), "=qm" (c)
 		     : : "memory");
 	return c != 0;
@@ -157,7 +310,16 @@ static inline int atomic_add_negative(in
 {
 	unsigned char c;
 
-	asm volatile(LOCK_PREFIX "addl %2,%0; sets %1"
+	asm volatile(LOCK_PREFIX "addl %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subl %2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sets %1\n"
 		     : "+m" (v->counter), "=qm" (c)
 		     : "ir" (i) : "memory");
 	return c;
@@ -179,7 +341,7 @@ static inline int atomic_add_return(int 
 		goto no_xadd;
 #endif
 	/* Modern 486+ processor */
-	return i + xadd(&v->counter, i);
+	return i + xadd_check_overflow(&v->counter, i);
 
 #ifdef CONFIG_M386
 no_xadd: /* Legacy 386 processor */
@@ -192,6 +354,34 @@ no_xadd: /* Legacy 386 processor */
 }
 
 /**
+ * atomic_add_return_unchecked - add integer and return
+ * @i: integer value to add
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + @v
+ */
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+#ifdef CONFIG_M386
+	int __i;
+	unsigned long flags;
+	if (unlikely(boot_cpu_data.x86 <= 3))
+		goto no_xadd;
+#endif
+	/* Modern 486+ processor */
+	return i + xadd(&v->counter, i);
+
+#ifdef CONFIG_M386
+no_xadd: /* Legacy 386 processor */
+	raw_local_irq_save(flags);
+	__i = atomic_read_unchecked(v);
+	atomic_set_unchecked(v, i + __i);
+	raw_local_irq_restore(flags);
+	return i + __i;
+#endif
+}
+
+/**
  * atomic_sub_return - subtract integer and return
  * @v: pointer of type atomic_t
  * @i: integer value to subtract
@@ -204,6 +394,10 @@ static inline int atomic_sub_return(int 
 }
 
 #define atomic_inc_return(v)  (atomic_add_return(1, v))
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v);
+}
 #define atomic_dec_return(v)  (atomic_sub_return(1, v))
 
 static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
@@ -211,11 +405,21 @@ static inline int atomic_cmpxchg(atomic_
 	return cmpxchg(&v->counter, old, new);
 }
 
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
 static inline int atomic_xchg(atomic_t *v, int new)
 {
 	return xchg(&v->counter, new);
 }
 
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
+
 /**
  * __atomic_add_unless - add unless the number is already a given value
  * @v: pointer of type atomic_t
@@ -227,12 +431,25 @@ static inline int atomic_xchg(atomic_t *
  */
 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
-	int c, old;
+	int c, old, new;
 	c = atomic_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic_cmpxchg((v), c, c + (a));
+
+		asm volatile("addl %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "subl %2,%0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a));
+
+		old = atomic_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
@@ -240,6 +457,48 @@ static inline int __atomic_add_unless(at
 	return c;
 }
 
+/**
+ * atomic_inc_not_zero_hint - increment if not null
+ * @v: pointer of type atomic_t
+ * @hint: probable value of the atomic before the increment
+ *
+ * This version of atomic_inc_not_zero() gives a hint of probable
+ * value of the atomic. This helps processor to not read the memory
+ * before doing the atomic read/modify/write cycle, lowering
+ * number of bus transactions on some arches.
+ *
+ * Returns: 0 if increment was not done, 1 otherwise.
+ */
+#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint
+static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint)
+{
+	int val, c = hint, new;
+
+	/* sanity test, should be removed by compiler if hint is a constant */
+	if (!hint)
+		return __atomic_add_unless(v, 1, 0);
+
+	do {
+		asm volatile("incl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "decl %0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c));
+
+		val = atomic_cmpxchg(v, c, new);
+		if (val == c)
+			return 1;
+		c = val;
+	} while (c);
+
+	return 0;
+}
 
 /*
  * atomic_dec_if_positive - decrement by 1 if old value positive
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/bitops.h linux-3.2.22-g-v/arch/x86/include/asm/bitops.h
--- linux-3.2.22/arch/x86/include/asm/bitops.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/bitops.h	2012-07-11 20:20:36.997450440 +0200
@@ -38,7 +38,7 @@
  * a mask operation on a byte.
  */
 #define IS_IMMEDIATE(nr)		(__builtin_constant_p(nr))
-#define CONST_MASK_ADDR(nr, addr)	BITOP_ADDR((void *)(addr) + ((nr)>>3))
+#define CONST_MASK_ADDR(nr, addr)	BITOP_ADDR((volatile void *)(addr) + ((nr)>>3))
 #define CONST_MASK(nr)			(1 << ((nr) & 7))
 
 /**
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/boot.h linux-3.2.22-g-v/arch/x86/include/asm/boot.h
--- linux-3.2.22/arch/x86/include/asm/boot.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/boot.h	2012-07-11 20:20:36.997450440 +0200
@@ -11,10 +11,15 @@
 #include <asm/pgtable_types.h>
 
 /* Physical address where kernel should be loaded. */
-#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
+#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
 				+ (CONFIG_PHYSICAL_ALIGN - 1)) \
 				& ~(CONFIG_PHYSICAL_ALIGN - 1))
 
+#ifndef __ASSEMBLY__
+extern unsigned char __LOAD_PHYSICAL_ADDR[];
+#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR)
+#endif
+
 /* Minimum kernel alignment, as a power of two */
 #ifdef CONFIG_X86_64
 #define MIN_KERNEL_ALIGN_LG2	PMD_SHIFT
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/cacheflush.h linux-3.2.22-g-v/arch/x86/include/asm/cacheflush.h
--- linux-3.2.22/arch/x86/include/asm/cacheflush.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/cacheflush.h	2012-07-11 20:20:37.000784165 +0200
@@ -26,7 +26,7 @@ static inline unsigned long get_page_mem
 	unsigned long pg_flags = pg->flags & _PGMT_MASK;
 
 	if (pg_flags == _PGMT_DEFAULT)
-		return -1;
+		return ~0UL;
 	else if (pg_flags == _PGMT_WC)
 		return _PAGE_CACHE_WC;
 	else if (pg_flags == _PGMT_UC_MINUS)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/cache.h linux-3.2.22-g-v/arch/x86/include/asm/cache.h
--- linux-3.2.22/arch/x86/include/asm/cache.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/cache.h	2012-07-11 20:20:36.997450440 +0200
@@ -5,12 +5,13 @@
 
 /* L1 cache line size */
 #define L1_CACHE_SHIFT	(CONFIG_X86_L1_CACHE_SHIFT)
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
+#define __read_only __attribute__((__section__(".data..read_only")))
 
 #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT
-#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT)
+#define INTERNODE_CACHE_BYTES (_AC(1,UL) << INTERNODE_CACHE_SHIFT)
 
 #ifdef CONFIG_X86_VSMP
 #ifdef CONFIG_SMP
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/checksum_32.h linux-3.2.22-g-v/arch/x86/include/asm/checksum_32.h
--- linux-3.2.22/arch/x86/include/asm/checksum_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/checksum_32.h	2012-07-11 20:20:37.000784165 +0200
@@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_gene
 					    int len, __wsum sum,
 					    int *src_err_ptr, int *dst_err_ptr);
 
+asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst,
+						  int len, __wsum sum,
+						  int *src_err_ptr, int *dst_err_ptr);
+
+asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst,
+						  int len, __wsum sum,
+						  int *src_err_ptr, int *dst_err_ptr);
+
 /*
  *	Note: when you get a NULL pointer exception here this means someone
  *	passed in an incorrect kernel address to one of these functions.
@@ -50,7 +58,7 @@ static inline __wsum csum_partial_copy_f
 						 int *err_ptr)
 {
 	might_sleep();
-	return csum_partial_copy_generic((__force void *)src, dst,
+	return csum_partial_copy_generic_from_user((__force void *)src, dst,
 					 len, sum, err_ptr, NULL);
 }
 
@@ -178,7 +186,7 @@ static inline __wsum csum_and_copy_to_us
 {
 	might_sleep();
 	if (access_ok(VERIFY_WRITE, dst, len))
-		return csum_partial_copy_generic(src, (__force void *)dst,
+		return csum_partial_copy_generic_to_user(src, (__force void *)dst,
 						 len, sum, NULL, err_ptr);
 
 	if (len)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/cmpxchg.h linux-3.2.22-g-v/arch/x86/include/asm/cmpxchg.h
--- linux-3.2.22/arch/x86/include/asm/cmpxchg.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/cmpxchg.h	2012-07-11 20:20:37.000784165 +0200
@@ -14,6 +14,8 @@ extern void __cmpxchg_wrong_size(void)
 	__compiletime_error("Bad argument size for cmpxchg");
 extern void __xadd_wrong_size(void)
 	__compiletime_error("Bad argument size for xadd");
+extern void __xadd_check_overflow_wrong_size(void)
+	__compiletime_error("Bad argument size for xadd_check_overflow");
 
 /*
  * Constants for operation sizes. On 32-bit, the 64-bit size it set to
@@ -195,6 +197,34 @@ extern void __xadd_wrong_size(void)
 		__ret;							\
 	})
 
+#define __xadd_check_overflow(ptr, inc, lock)				\
+	({								\
+	        __typeof__ (*(ptr)) __ret = (inc);			\
+		switch (sizeof(*(ptr))) {				\
+		case __X86_CASE_L:					\
+			asm volatile (lock "xaddl %0, %1\n"		\
+				      "jno 0f\n"			\
+				      "mov %0,%1\n"			\
+				      "int $4\n0:\n"			\
+				      _ASM_EXTABLE(0b, 0b)		\
+				      : "+r" (__ret), "+m" (*(ptr))	\
+				      : : "memory", "cc");		\
+			break;						\
+		case __X86_CASE_Q:					\
+			asm volatile (lock "xaddq %q0, %1\n"		\
+				      "jno 0f\n"			\
+				      "mov %0,%1\n"			\
+				      "int $4\n0:\n"			\
+				      _ASM_EXTABLE(0b, 0b)		\
+				      : "+r" (__ret), "+m" (*(ptr))	\
+				      : : "memory", "cc");		\
+			break;						\
+		default:						\
+			__xadd_check_overflow_wrong_size();		\
+		}							\
+		__ret;							\
+	})
+
 /*
  * xadd() adds "inc" to "*ptr" and atomically returns the previous
  * value of "*ptr".
@@ -207,4 +237,6 @@ extern void __xadd_wrong_size(void)
 #define xadd_sync(ptr, inc)	__xadd((ptr), (inc), "lock; ")
 #define xadd_local(ptr, inc)	__xadd((ptr), (inc), "")
 
+#define xadd_check_overflow(ptr, inc)	__xadd_check_overflow((ptr), (inc), LOCK_PREFIX)
+
 #endif	/* ASM_X86_CMPXCHG_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/cpufeature.h linux-3.2.22-g-v/arch/x86/include/asm/cpufeature.h
--- linux-3.2.22/arch/x86/include/asm/cpufeature.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/cpufeature.h	2012-07-11 20:20:37.000784165 +0200
@@ -363,7 +363,7 @@ static __always_inline __pure bool __sta
 			     ".section .discard,\"aw\",@progbits\n"
 			     " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
 			     ".previous\n"
-			     ".section .altinstr_replacement,\"ax\"\n"
+			     ".section .altinstr_replacement,\"a\"\n"
 			     "3: movb $1,%0\n"
 			     "4:\n"
 			     ".previous\n"
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/desc_defs.h linux-3.2.22-g-v/arch/x86/include/asm/desc_defs.h
--- linux-3.2.22/arch/x86/include/asm/desc_defs.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/desc_defs.h	2012-07-11 20:20:37.003997244 +0200
@@ -31,6 +31,12 @@ struct desc_struct {
 			unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1;
 			unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8;
 		};
+		struct {
+			u16 offset_low;
+			u16 seg;
+			unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1;
+			unsigned offset_high: 16;
+		} gate;
 	};
 } __attribute__((packed));
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/desc.h linux-3.2.22-g-v/arch/x86/include/asm/desc.h
--- linux-3.2.22/arch/x86/include/asm/desc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/desc.h	2012-07-11 20:20:37.000784165 +0200
@@ -4,6 +4,7 @@
 #include <asm/desc_defs.h>
 #include <asm/ldt.h>
 #include <asm/mmu.h>
+#include <asm/pgtable.h>
 
 #include <linux/smp.h>
 
@@ -16,6 +17,7 @@ static inline void fill_ldt(struct desc_
 
 	desc->type		= (info->read_exec_only ^ 1) << 1;
 	desc->type	       |= info->contents << 2;
+	desc->type	       |= info->seg_not_present ^ 1;
 
 	desc->s			= 1;
 	desc->dpl		= 0x3;
@@ -34,17 +36,12 @@ static inline void fill_ldt(struct desc_
 }
 
 extern struct desc_ptr idt_descr;
-extern gate_desc idt_table[];
-
-struct gdt_page {
-	struct desc_struct gdt[GDT_ENTRIES];
-} __attribute__((aligned(PAGE_SIZE)));
-
-DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page);
+extern gate_desc idt_table[256];
 
+extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)];
 static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
 {
-	return per_cpu(gdt_page, cpu).gdt;
+	return cpu_gdt_table[cpu];
 }
 
 #ifdef CONFIG_X86_64
@@ -69,8 +66,14 @@ static inline void pack_gate(gate_desc *
 			     unsigned long base, unsigned dpl, unsigned flags,
 			     unsigned short seg)
 {
-	gate->a = (seg << 16) | (base & 0xffff);
-	gate->b = (base & 0xffff0000) | (((0x80 | type | (dpl << 5)) & 0xff) << 8);
+	gate->gate.offset_low	= base;
+	gate->gate.seg		= seg;
+	gate->gate.reserved	= 0;
+	gate->gate.type		= type;
+	gate->gate.s		= 0;
+	gate->gate.dpl		= dpl;
+	gate->gate.p		= 1;
+	gate->gate.offset_high	= base >> 16;
 }
 
 #endif
@@ -115,12 +118,16 @@ static inline void paravirt_free_ldt(str
 
 static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate)
 {
+	pax_open_kernel();
 	memcpy(&idt[entry], gate, sizeof(*gate));
+	pax_close_kernel();
 }
 
 static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc)
 {
+	pax_open_kernel();
 	memcpy(&ldt[entry], desc, 8);
+	pax_close_kernel();
 }
 
 static inline void
@@ -134,7 +141,9 @@ native_write_gdt_entry(struct desc_struc
 	default:	size = sizeof(*gdt);		break;
 	}
 
+	pax_open_kernel();
 	memcpy(&gdt[entry], desc, size);
+	pax_close_kernel();
 }
 
 static inline void pack_descriptor(struct desc_struct *desc, unsigned long base,
@@ -207,7 +216,9 @@ static inline void native_set_ldt(const 
 
 static inline void native_load_tr_desc(void)
 {
+	pax_open_kernel();
 	asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
+	pax_close_kernel();
 }
 
 static inline void native_load_gdt(const struct desc_ptr *dtr)
@@ -244,8 +255,10 @@ static inline void native_load_tls(struc
 	struct desc_struct *gdt = get_cpu_gdt_table(cpu);
 	unsigned int i;
 
+	pax_open_kernel();
 	for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
 		gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i];
+	pax_close_kernel();
 }
 
 #define _LDT_empty(info)				\
@@ -307,7 +320,7 @@ static inline void set_desc_limit(struct
 	desc->limit = (limit >> 16) & 0xf;
 }
 
-static inline void _set_gate(int gate, unsigned type, void *addr,
+static inline void _set_gate(int gate, unsigned type, const void *addr,
 			     unsigned dpl, unsigned ist, unsigned seg)
 {
 	gate_desc s;
@@ -326,7 +339,7 @@ static inline void _set_gate(int gate, u
  * Pentium F0 0F bugfix can have resulted in the mapped
  * IDT being write-protected.
  */
-static inline void set_intr_gate(unsigned int n, void *addr)
+static inline void set_intr_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS);
@@ -356,19 +369,19 @@ static inline void alloc_intr_gate(unsig
 /*
  * This routine sets up an interrupt gate at directory privilege level 3.
  */
-static inline void set_system_intr_gate(unsigned int n, void *addr)
+static inline void set_system_intr_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS);
 }
 
-static inline void set_system_trap_gate(unsigned int n, void *addr)
+static inline void set_system_trap_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS);
 }
 
-static inline void set_trap_gate(unsigned int n, void *addr)
+static inline void set_trap_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS);
@@ -377,19 +390,31 @@ static inline void set_trap_gate(unsigne
 static inline void set_task_gate(unsigned int n, unsigned int gdt_entry)
 {
 	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3));
+	_set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3));
 }
 
-static inline void set_intr_gate_ist(int n, void *addr, unsigned ist)
+static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS);
 }
 
-static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist)
+static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
 }
 
+#ifdef CONFIG_X86_32
+static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu)
+{
+	struct desc_struct d;
+
+	if (likely(limit))
+		limit = (limit - 1UL) >> PAGE_SHIFT;
+	pack_descriptor(&d, base, limit, 0xFB, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S);
+}
+#endif
+
 #endif /* _ASM_X86_DESC_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/e820.h linux-3.2.22-g-v/arch/x86/include/asm/e820.h
--- linux-3.2.22/arch/x86/include/asm/e820.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/e820.h	2012-07-11 20:20:37.003997244 +0200
@@ -69,7 +69,7 @@ struct e820map {
 #define ISA_START_ADDRESS	0xa0000
 #define ISA_END_ADDRESS		0x100000
 
-#define BIOS_BEGIN		0x000a0000
+#define BIOS_BEGIN		0x000c0000
 #define BIOS_END		0x00100000
 
 #define BIOS_ROM_BASE		0xffe00000
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/elf.h linux-3.2.22-g-v/arch/x86/include/asm/elf.h
--- linux-3.2.22/arch/x86/include/asm/elf.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/elf.h	2012-07-11 20:20:37.003997244 +0200
@@ -238,7 +238,25 @@ extern int force_personality32;
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
+#ifdef CONFIG_PAX_SEGMEXEC
+#define ELF_ET_DYN_BASE		((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2)
+#else
 #define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+#ifdef CONFIG_X86_32
+#define PAX_ELF_ET_DYN_BASE	0x10000000UL
+
+#define PAX_DELTA_MMAP_LEN	(current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
+#define PAX_DELTA_STACK_LEN	(current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
+#else
+#define PAX_ELF_ET_DYN_BASE	0x400000UL
+
+#define PAX_DELTA_MMAP_LEN	((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
+#define PAX_DELTA_STACK_LEN	((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
+#endif
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
@@ -291,9 +309,7 @@ do {									\
 
 #define ARCH_DLINFO							\
 do {									\
-	if (vdso_enabled)						\
-		NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
-			    (unsigned long)current->mm->context.vdso);	\
+	NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso);	\
 } while (0)
 
 #define AT_SYSINFO		32
@@ -304,7 +320,7 @@ do {									\
 
 #endif /* !CONFIG_X86_32 */
 
-#define VDSO_CURRENT_BASE	((unsigned long)current->mm->context.vdso)
+#define VDSO_CURRENT_BASE	(current->mm->context.vdso)
 
 #define VDSO_ENTRY							\
 	((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
@@ -318,9 +334,6 @@ extern int arch_setup_additional_pages(s
 extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
 #define compat_arch_setup_additional_pages	syscall32_setup_pages
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 /*
  * True on X86_32 or when emulating IA32 on X86_64
  */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/emergency-restart.h linux-3.2.22-g-v/arch/x86/include/asm/emergency-restart.h
--- linux-3.2.22/arch/x86/include/asm/emergency-restart.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/emergency-restart.h	2012-07-11 20:20:37.003997244 +0200
@@ -15,6 +15,6 @@ enum reboot_type {
 
 extern enum reboot_type reboot_type;
 
-extern void machine_emergency_restart(void);
+extern void machine_emergency_restart(void) __noreturn;
 
 #endif /* _ASM_X86_EMERGENCY_RESTART_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/futex.h linux-3.2.22-g-v/arch/x86/include/asm/futex.h
--- linux-3.2.22/arch/x86/include/asm/futex.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/futex.h	2012-07-11 20:20:37.003997244 +0200
@@ -12,16 +12,18 @@
 #include <asm/system.h>
 
 #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg)	\
+	typecheck(u32 __user *, uaddr);				\
 	asm volatile("1:\t" insn "\n"				\
 		     "2:\t.section .fixup,\"ax\"\n"		\
 		     "3:\tmov\t%3, %1\n"			\
 		     "\tjmp\t2b\n"				\
 		     "\t.previous\n"				\
 		     _ASM_EXTABLE(1b, 3b)			\
-		     : "=r" (oldval), "=r" (ret), "+m" (*uaddr)	\
+		     : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr))\
 		     : "i" (-EFAULT), "0" (oparg), "1" (0))
 
 #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg)	\
+	typecheck(u32 __user *, uaddr);				\
 	asm volatile("1:\tmovl	%2, %0\n"			\
 		     "\tmovl\t%0, %3\n"				\
 		     "\t" insn "\n"				\
@@ -34,7 +36,7 @@
 		     _ASM_EXTABLE(1b, 4b)			\
 		     _ASM_EXTABLE(2b, 4b)			\
 		     : "=&a" (oldval), "=&r" (ret),		\
-		       "+m" (*uaddr), "=&r" (tem)		\
+		       "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem)	\
 		     : "r" (oparg), "i" (-EFAULT), "1" (0))
 
 static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
@@ -61,10 +63,10 @@ static inline int futex_atomic_op_inuser
 
 	switch (op) {
 	case FUTEX_OP_SET:
-		__futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg);
+		__futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_ADD:
-		__futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval,
+		__futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval,
 				   uaddr, oparg);
 		break;
 	case FUTEX_OP_OR:
@@ -123,13 +125,13 @@ static inline int futex_atomic_cmpxchg_i
 	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
 		return -EFAULT;
 
-	asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n"
+	asm volatile("1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %4, %2\n"
 		     "2:\t.section .fixup, \"ax\"\n"
 		     "3:\tmov     %3, %0\n"
 		     "\tjmp     2b\n"
 		     "\t.previous\n"
 		     _ASM_EXTABLE(1b, 3b)
-		     : "+r" (ret), "=a" (oldval), "+m" (*uaddr)
+		     : "+r" (ret), "=a" (oldval), "+m" (*(u32 __user *)____m(uaddr))
 		     : "i" (-EFAULT), "r" (newval), "1" (oldval)
 		     : "memory"
 	);
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/hw_irq.h linux-3.2.22-g-v/arch/x86/include/asm/hw_irq.h
--- linux-3.2.22/arch/x86/include/asm/hw_irq.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/hw_irq.h	2012-07-11 20:20:37.003997244 +0200
@@ -136,8 +136,8 @@ extern void setup_ioapic_dest(void);
 extern void enable_IO_APIC(void);
 
 /* Statistics */
-extern atomic_t irq_err_count;
-extern atomic_t irq_mis_count;
+extern atomic_unchecked_t irq_err_count;
+extern atomic_unchecked_t irq_mis_count;
 
 /* EISA */
 extern void eisa_set_level_irq(unsigned int irq);
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/i387.h linux-3.2.22-g-v/arch/x86/include/asm/i387.h
--- linux-3.2.22/arch/x86/include/asm/i387.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/i387.h	2012-07-11 20:20:37.007450618 +0200
@@ -92,6 +92,11 @@ static inline int fxrstor_checking(struc
 {
 	int err;
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if ((unsigned long)fx < PAX_USER_SHADOW_BASE)
+		fx = (struct i387_fxsave_struct __user *)((void *)fx + PAX_USER_SHADOW_BASE);
+#endif
+
 	/* See comment in fxsave() below. */
 #ifdef CONFIG_AS_FXSAVEQ
 	asm volatile("1:  fxrstorq %[fx]\n\t"
@@ -121,6 +126,11 @@ static inline int fxsave_user(struct i38
 {
 	int err;
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if ((unsigned long)fx < PAX_USER_SHADOW_BASE)
+		fx = (struct i387_fxsave_struct __user *)((void __user *)fx + PAX_USER_SHADOW_BASE);
+#endif
+
 	/*
 	 * Clear the bytes not touched by the fxsave and reserved
 	 * for the SW usage.
@@ -424,7 +434,7 @@ static inline bool interrupted_kernel_fp
 static inline bool interrupted_user_mode(void)
 {
 	struct pt_regs *regs = get_irq_regs();
-	return regs && user_mode_vm(regs);
+	return regs && user_mode(regs);
 }
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/io.h linux-3.2.22-g-v/arch/x86/include/asm/io.h
--- linux-3.2.22/arch/x86/include/asm/io.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/io.h	2012-07-11 20:20:37.007450618 +0200
@@ -194,6 +194,17 @@ extern void set_iounmap_nonlazy(void);
 
 #include <linux/vmalloc.h>
 
+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
+static inline int valid_phys_addr_range(unsigned long addr, size_t count)
+{
+	return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
+}
+
+static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count)
+{
+	return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
+}
+
 /*
  * Convert a virtual cached pointer to an uncached pointer
  */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/irqflags.h linux-3.2.22-g-v/arch/x86/include/asm/irqflags.h
--- linux-3.2.22/arch/x86/include/asm/irqflags.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/irqflags.h	2012-07-11 20:20:37.007450618 +0200
@@ -141,6 +141,11 @@ static inline notrace unsigned long arch
 	sti;					\
 	sysexit
 
+#define GET_CR0_INTO_RDI		mov %cr0, %rdi
+#define SET_RDI_INTO_CR0		mov %rdi, %cr0
+#define GET_CR3_INTO_RDI		mov %cr3, %rdi
+#define SET_RDI_INTO_CR3		mov %rdi, %cr3
+
 #else
 #define INTERRUPT_RETURN		iret
 #define ENABLE_INTERRUPTS_SYSEXIT	sti; sysexit
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/kprobes.h linux-3.2.22-g-v/arch/x86/include/asm/kprobes.h
--- linux-3.2.22/arch/x86/include/asm/kprobes.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/kprobes.h	2012-07-11 20:20:37.007450618 +0200
@@ -37,13 +37,8 @@ typedef u8 kprobe_opcode_t;
 #define RELATIVEJUMP_SIZE 5
 #define RELATIVECALL_OPCODE 0xe8
 #define RELATIVE_ADDR_SIZE 4
-#define MAX_STACK_SIZE 64
-#define MIN_STACK_SIZE(ADDR)					       \
-	(((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
-			      THREAD_SIZE - (unsigned long)(ADDR)))    \
-	 ? (MAX_STACK_SIZE)					       \
-	 : (((unsigned long)current_thread_info()) +		       \
-	    THREAD_SIZE - (unsigned long)(ADDR)))
+#define MAX_STACK_SIZE 64UL
+#define MIN_STACK_SIZE(ADDR)	min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR))
 
 #define flush_insn_slot(p)	do { } while (0)
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/kvm_host.h linux-3.2.22-g-v/arch/x86/include/asm/kvm_host.h
--- linux-3.2.22/arch/x86/include/asm/kvm_host.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/kvm_host.h	2012-07-11 20:20:37.007450618 +0200
@@ -459,7 +459,7 @@ struct kvm_arch {
 	unsigned int n_requested_mmu_pages;
 	unsigned int n_max_mmu_pages;
 	unsigned int indirect_shadow_pages;
-	atomic_t invlpg_counter;
+	atomic_unchecked_t invlpg_counter;
 	struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
 	/*
 	 * Hash table of struct kvm_mmu_page.
@@ -638,7 +638,7 @@ struct kvm_x86_ops {
 	int (*check_intercept)(struct kvm_vcpu *vcpu,
 			       struct x86_instruction_info *info,
 			       enum x86_intercept_stage stage);
-};
+} __do_const;
 
 struct kvm_arch_async_pf {
 	u32 token;
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/local.h linux-3.2.22-g-v/arch/x86/include/asm/local.h
--- linux-3.2.22/arch/x86/include/asm/local.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/local.h	2012-07-11 20:20:37.007450618 +0200
@@ -18,26 +18,58 @@ typedef struct {
 
 static inline void local_inc(local_t *l)
 {
-	asm volatile(_ASM_INC "%0"
+	asm volatile(_ASM_INC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_DEC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (l->a.counter));
 }
 
 static inline void local_dec(local_t *l)
 {
-	asm volatile(_ASM_DEC "%0"
+	asm volatile(_ASM_DEC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_INC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (l->a.counter));
 }
 
 static inline void local_add(long i, local_t *l)
 {
-	asm volatile(_ASM_ADD "%1,%0"
+	asm volatile(_ASM_ADD "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_SUB "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (l->a.counter)
 		     : "ir" (i));
 }
 
 static inline void local_sub(long i, local_t *l)
 {
-	asm volatile(_ASM_SUB "%1,%0"
+	asm volatile(_ASM_SUB "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_ADD "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (l->a.counter)
 		     : "ir" (i));
 }
@@ -55,7 +87,16 @@ static inline int local_sub_and_test(lon
 {
 	unsigned char c;
 
-	asm volatile(_ASM_SUB "%2,%0; sete %1"
+	asm volatile(_ASM_SUB "%2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_ADD "%2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "+m" (l->a.counter), "=qm" (c)
 		     : "ir" (i) : "memory");
 	return c;
@@ -73,7 +114,16 @@ static inline int local_dec_and_test(loc
 {
 	unsigned char c;
 
-	asm volatile(_ASM_DEC "%0; sete %1"
+	asm volatile(_ASM_DEC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_INC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "+m" (l->a.counter), "=qm" (c)
 		     : : "memory");
 	return c != 0;
@@ -91,7 +141,16 @@ static inline int local_inc_and_test(loc
 {
 	unsigned char c;
 
-	asm volatile(_ASM_INC "%0; sete %1"
+	asm volatile(_ASM_INC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_DEC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sete %1\n"
 		     : "+m" (l->a.counter), "=qm" (c)
 		     : : "memory");
 	return c != 0;
@@ -110,7 +169,16 @@ static inline int local_add_negative(lon
 {
 	unsigned char c;
 
-	asm volatile(_ASM_ADD "%2,%0; sets %1"
+	asm volatile(_ASM_ADD "%2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_SUB "%2,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     "sets %1\n"
 		     : "+m" (l->a.counter), "=qm" (c)
 		     : "ir" (i) : "memory");
 	return c;
@@ -133,7 +201,15 @@ static inline long local_add_return(long
 #endif
 	/* Modern 486+ processor */
 	__i = i;
-	asm volatile(_ASM_XADD "%0, %1;"
+	asm volatile(_ASM_XADD "%0, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_MOV "%0,%1\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+r" (i), "+m" (l->a.counter)
 		     : : "memory");
 	return i + __i;
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/mman.h linux-3.2.22-g-v/arch/x86/include/asm/mman.h
--- linux-3.2.22/arch/x86/include/asm/mman.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/mman.h	2012-07-11 20:20:37.010784161 +0200
@@ -5,4 +5,14 @@
 
 #include <asm-generic/mman.h>
 
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_X86_32
+#define arch_mmap_check	i386_mmap_check
+int i386_mmap_check(unsigned long addr, unsigned long len,
+		unsigned long flags);
+#endif
+#endif
+#endif
+
 #endif /* _ASM_X86_MMAN_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/mmu_context.h linux-3.2.22-g-v/arch/x86/include/asm/mmu_context.h
--- linux-3.2.22/arch/x86/include/asm/mmu_context.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/mmu_context.h	2012-07-11 20:20:37.010784161 +0200
@@ -24,6 +24,18 @@ void destroy_context(struct mm_struct *m
 
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	unsigned int i;
+	pgd_t *pgd;
+
+	pax_open_kernel();
+	pgd = get_cpu_pgd(smp_processor_id());
+	for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i)
+		set_pgd_batched(pgd+i, native_make_pgd(0));
+	pax_close_kernel();
+#endif
+
 #ifdef CONFIG_SMP
 	if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK)
 		percpu_write(cpu_tlbstate.state, TLBSTATE_LAZY);
@@ -34,16 +46,30 @@ static inline void switch_mm(struct mm_s
 			     struct task_struct *tsk)
 {
 	unsigned cpu = smp_processor_id();
+#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+	int tlbstate = TLBSTATE_OK;
+#endif
 
 	if (likely(prev != next)) {
 #ifdef CONFIG_SMP
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+		tlbstate = percpu_read(cpu_tlbstate.state);
+#endif
 		percpu_write(cpu_tlbstate.state, TLBSTATE_OK);
 		percpu_write(cpu_tlbstate.active_mm, next);
 #endif
 		cpumask_set_cpu(cpu, mm_cpumask(next));
 
 		/* Re-load page tables */
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		pax_open_kernel();
+		__clone_user_pgds(get_cpu_pgd(cpu), next->pgd);
+		__shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd);
+		pax_close_kernel();
+		load_cr3(get_cpu_pgd(cpu));
+#else
 		load_cr3(next->pgd);
+#endif
 
 		/* stop flush ipis for the previous mm */
 		cpumask_clear_cpu(cpu, mm_cpumask(prev));
@@ -53,9 +79,38 @@ static inline void switch_mm(struct mm_s
 		 */
 		if (unlikely(prev->context.ldt != next->context.ldt))
 			load_LDT_nolock(&next->context);
-	}
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+		if (!(__supported_pte_mask & _PAGE_NX)) {
+			smp_mb__before_clear_bit();
+			cpu_clear(cpu, prev->context.cpu_user_cs_mask);
+			smp_mb__after_clear_bit();
+			cpu_set(cpu, next->context.cpu_user_cs_mask);
+		}
+#endif
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+		if (unlikely(prev->context.user_cs_base != next->context.user_cs_base ||
+			     prev->context.user_cs_limit != next->context.user_cs_limit))
+			set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
 #ifdef CONFIG_SMP
+		else if (unlikely(tlbstate != TLBSTATE_OK))
+			set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
+#endif
+#endif
+
+	}
 	else {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		pax_open_kernel();
+		__clone_user_pgds(get_cpu_pgd(cpu), next->pgd);
+		__shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd);
+		pax_close_kernel();
+		load_cr3(get_cpu_pgd(cpu));
+#endif
+
+#ifdef CONFIG_SMP
 		percpu_write(cpu_tlbstate.state, TLBSTATE_OK);
 		BUG_ON(percpu_read(cpu_tlbstate.active_mm) != next);
 
@@ -64,11 +119,28 @@ static inline void switch_mm(struct mm_s
 			 * tlb flush IPI delivery. We must reload CR3
 			 * to make sure to use no freed page tables.
 			 */
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			load_cr3(next->pgd);
+#endif
+
 			load_LDT_nolock(&next->context);
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+			if (!(__supported_pte_mask & _PAGE_NX))
+				cpu_set(cpu, next->context.cpu_user_cs_mask);
+#endif
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+#ifdef CONFIG_PAX_PAGEEXEC
+			if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX)))
+#endif
+				set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
+#endif
+
 		}
-	}
 #endif
+	}
 }
 
 #define activate_mm(prev, next)			\
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/mmu.h linux-3.2.22-g-v/arch/x86/include/asm/mmu.h
--- linux-3.2.22/arch/x86/include/asm/mmu.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/mmu.h	2012-07-11 20:20:37.010784161 +0200
@@ -9,7 +9,7 @@
  * we put the segment information here.
  */
 typedef struct {
-	void *ldt;
+	struct desc_struct *ldt;
 	int size;
 
 #ifdef CONFIG_X86_64
@@ -18,7 +18,19 @@ typedef struct {
 #endif
 
 	struct mutex lock;
-	void *vdso;
+	unsigned long vdso;
+
+#ifdef CONFIG_X86_32
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+	unsigned long user_cs_base;
+	unsigned long user_cs_limit;
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+	cpumask_t cpu_user_cs_mask;
+#endif
+
+#endif
+#endif
 } mm_context_t;
 
 #ifdef CONFIG_SMP
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/module.h linux-3.2.22-g-v/arch/x86/include/asm/module.h
--- linux-3.2.22/arch/x86/include/asm/module.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/module.h	2012-07-11 20:20:37.010784161 +0200
@@ -5,6 +5,7 @@
 
 #ifdef CONFIG_X86_64
 /* X86_64 does not define MODULE_PROC_FAMILY */
+#define MODULE_PROC_FAMILY ""
 #elif defined CONFIG_M386
 #define MODULE_PROC_FAMILY "386 "
 #elif defined CONFIG_M486
@@ -59,8 +60,20 @@
 #error unknown processor family
 #endif
 
-#ifdef CONFIG_X86_32
-# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
+#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS "
+#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR)
+#define MODULE_PAX_KERNEXEC "KERNEXEC_OR "
+#else
+#define MODULE_PAX_KERNEXEC ""
 #endif
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#define MODULE_PAX_UDEREF "UDEREF "
+#else
+#define MODULE_PAX_UDEREF ""
+#endif
+
+#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF
+
 #endif /* _ASM_X86_MODULE_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/page_64_types.h linux-3.2.22-g-v/arch/x86/include/asm/page_64_types.h
--- linux-3.2.22/arch/x86/include/asm/page_64_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/page_64_types.h	2012-07-11 20:20:37.010784161 +0200
@@ -56,7 +56,7 @@ void copy_page(void *to, void *from);
 
 /* duplicated to the one in bootmem.h */
 extern unsigned long max_pfn;
-extern unsigned long phys_base;
+extern const unsigned long phys_base;
 
 extern unsigned long __phys_addr(unsigned long);
 #define __phys_reloc_hide(x)	(x)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/paravirt.h linux-3.2.22-g-v/arch/x86/include/asm/paravirt.h
--- linux-3.2.22/arch/x86/include/asm/paravirt.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/paravirt.h	2012-07-11 20:20:37.010784161 +0200
@@ -667,6 +667,18 @@ static inline void set_pgd(pgd_t *pgdp, 
 			    val);
 }
 
+static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
+{
+	pgdval_t val = native_pgd_val(pgd);
+
+	if (sizeof(pgdval_t) > sizeof(long))
+		PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp,
+			    val, (u64)val >> 32);
+	else
+		PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp,
+			    val);
+}
+
 static inline void pgd_clear(pgd_t *pgdp)
 {
 	set_pgd(pgdp, __pgd(0));
@@ -748,6 +760,21 @@ static inline void __set_fixmap(unsigned
 	pv_mmu_ops.set_fixmap(idx, phys, flags);
 }
 
+#ifdef CONFIG_PAX_KERNEXEC
+static inline unsigned long pax_open_kernel(void)
+{
+	return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel);
+}
+
+static inline unsigned long pax_close_kernel(void)
+{
+	return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel);
+}
+#else
+static inline unsigned long pax_open_kernel(void) { return 0; }
+static inline unsigned long pax_close_kernel(void) { return 0; }
+#endif
+
 #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
 
 static inline int arch_spin_is_locked(struct arch_spinlock *lock)
@@ -964,7 +991,7 @@ extern void default_banner(void);
 
 #define PARA_PATCH(struct, off)        ((PARAVIRT_PATCH_##struct + (off)) / 4)
 #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4)
-#define PARA_INDIRECT(addr)	*%cs:addr
+#define PARA_INDIRECT(addr)	*%ss:addr
 #endif
 
 #define INTERRUPT_RETURN						\
@@ -1041,6 +1068,21 @@ extern void default_banner(void);
 	PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit),	\
 		  CLBR_NONE,						\
 		  jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
+
+#define GET_CR0_INTO_RDI				\
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);	\
+	mov %rax,%rdi
+
+#define SET_RDI_INTO_CR0				\
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
+
+#define GET_CR3_INTO_RDI				\
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3);	\
+	mov %rax,%rdi
+
+#define SET_RDI_INTO_CR3				\
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3)
+
 #endif	/* CONFIG_X86_32 */
 
 #endif /* __ASSEMBLY__ */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/paravirt_types.h linux-3.2.22-g-v/arch/x86/include/asm/paravirt_types.h
--- linux-3.2.22/arch/x86/include/asm/paravirt_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/paravirt_types.h	2012-07-11 20:20:37.014116656 +0200
@@ -84,20 +84,20 @@ struct pv_init_ops {
 	 */
 	unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
 			  unsigned long addr, unsigned len);
-};
+} __no_const;
 
 
 struct pv_lazy_ops {
 	/* Set deferred update mode, used for batching operations. */
 	void (*enter)(void);
 	void (*leave)(void);
-};
+} __no_const;
 
 struct pv_time_ops {
 	unsigned long long (*sched_clock)(void);
 	unsigned long long (*steal_clock)(int cpu);
 	unsigned long (*get_tsc_khz)(void);
-};
+} __no_const;
 
 struct pv_cpu_ops {
 	/* hooks for various privileged instructions */
@@ -193,7 +193,7 @@ struct pv_cpu_ops {
 
 	void (*start_context_switch)(struct task_struct *prev);
 	void (*end_context_switch)(struct task_struct *next);
-};
+} __no_const;
 
 struct pv_irq_ops {
 	/*
@@ -224,7 +224,7 @@ struct pv_apic_ops {
 				 unsigned long start_eip,
 				 unsigned long start_esp);
 #endif
-};
+} __no_const;
 
 struct pv_mmu_ops {
 	unsigned long (*read_cr2)(void);
@@ -313,6 +313,7 @@ struct pv_mmu_ops {
 	struct paravirt_callee_save make_pud;
 
 	void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);
+	void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval);
 #endif	/* PAGETABLE_LEVELS == 4 */
 #endif	/* PAGETABLE_LEVELS >= 3 */
 
@@ -324,6 +325,12 @@ struct pv_mmu_ops {
 	   an mfn.  We can tell which is which from the index. */
 	void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
 			   phys_addr_t phys, pgprot_t flags);
+
+#ifdef CONFIG_PAX_KERNEXEC
+	unsigned long (*pax_open_kernel)(void);
+	unsigned long (*pax_close_kernel)(void);
+#endif
+
 };
 
 struct arch_spinlock;
@@ -334,7 +341,7 @@ struct pv_lock_ops {
 	void (*spin_lock_flags)(struct arch_spinlock *lock, unsigned long flags);
 	int (*spin_trylock)(struct arch_spinlock *lock);
 	void (*spin_unlock)(struct arch_spinlock *lock);
-};
+} __no_const;
 
 /* This contains all the paravirt structures: we get a convenient
  * number for each function using the offset which we use to indicate
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgalloc.h linux-3.2.22-g-v/arch/x86/include/asm/pgalloc.h
--- linux-3.2.22/arch/x86/include/asm/pgalloc.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgalloc.h	2012-07-11 20:20:37.014116656 +0200
@@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(s
 				       pmd_t *pmd, pte_t *pte)
 {
 	paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
+	set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE));
+}
+
+static inline void pmd_populate_user(struct mm_struct *mm,
+				       pmd_t *pmd, pte_t *pte)
+{
+	paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
 	set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
 }
 
@@ -99,12 +106,22 @@ static inline void __pmd_free_tlb(struct
 
 #ifdef CONFIG_X86_PAE
 extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
+{
+	pud_populate(mm, pudp, pmd);
+}
 #else	/* !CONFIG_X86_PAE */
 static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 {
 	paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
 	set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
 }
+
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
+	set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd)));
+}
 #endif	/* CONFIG_X86_PAE */
 
 #if PAGETABLE_LEVELS > 3
@@ -114,6 +131,12 @@ static inline void pgd_populate(struct m
 	set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
 }
 
+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
+{
+	paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT);
+	set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud)));
+}
+
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable-2level.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable-2level.h
--- linux-3.2.22/arch/x86/include/asm/pgtable-2level.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable-2level.h	2012-07-11 20:20:37.014116656 +0200
@@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t 
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	*pmdp = pmd;
+	pax_close_kernel();
 }
 
 static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable_32.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable_32.h
--- linux-3.2.22/arch/x86/include/asm/pgtable_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable_32.h	2012-07-11 20:20:37.017450359 +0200
@@ -25,9 +25,6 @@
 struct mm_struct;
 struct vm_area_struct;
 
-extern pgd_t swapper_pg_dir[1024];
-extern pgd_t initial_page_table[1024];
-
 static inline void pgtable_cache_init(void) { }
 static inline void check_pgt_cache(void) { }
 void paging_init(void);
@@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, u
 # include <asm/pgtable-2level.h>
 #endif
 
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+extern pgd_t initial_page_table[PTRS_PER_PGD];
+#ifdef CONFIG_X86_PAE
+extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD];
+#endif
+
 #if defined(CONFIG_HIGHPTE)
 #define pte_offset_map(dir, address)					\
 	((pte_t *)kmap_atomic(pmd_page(*(dir))) +		\
@@ -62,7 +65,9 @@ extern void set_pmd_pfn(unsigned long, u
 /* Clear a kernel PTE and flush it from the TLB */
 #define kpte_clear_flush(ptep, vaddr)		\
 do {						\
+	pax_open_kernel();			\
 	pte_clear(&init_mm, (vaddr), (ptep));	\
+	pax_close_kernel();			\
 	__flush_tlb_one((vaddr));		\
 } while (0)
 
@@ -74,6 +79,9 @@ do {						\
 
 #endif /* !__ASSEMBLY__ */
 
+#define HAVE_ARCH_UNMAPPED_AREA
+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
+
 /*
  * kern_addr_valid() is (1) for FLATMEM and (0) for
  * SPARSEMEM and DISCONTIGMEM
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable_32_types.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable_32_types.h
--- linux-3.2.22/arch/x86/include/asm/pgtable_32_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable_32_types.h	2012-07-11 20:20:37.017450359 +0200
@@ -8,7 +8,7 @@
  */
 #ifdef CONFIG_X86_PAE
 # include <asm/pgtable-3level_types.h>
-# define PMD_SIZE	(1UL << PMD_SHIFT)
+# define PMD_SIZE	(_AC(1, UL) << PMD_SHIFT)
 # define PMD_MASK	(~(PMD_SIZE - 1))
 #else
 # include <asm/pgtable-2level_types.h>
@@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set 
 # define VMALLOC_END	(FIXADDR_START - 2 * PAGE_SIZE)
 #endif
 
+#ifdef CONFIG_PAX_KERNEXEC
+#ifndef __ASSEMBLY__
+extern unsigned char MODULES_EXEC_VADDR[];
+extern unsigned char MODULES_EXEC_END[];
+#endif
+#include <asm/boot.h>
+#define ktla_ktva(addr)		(addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET)
+#define ktva_ktla(addr)		(addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET)
+#else
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+#endif
+
 #define MODULES_VADDR	VMALLOC_START
 #define MODULES_END	VMALLOC_END
 #define MODULES_LEN	(MODULES_VADDR - MODULES_END)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable-3level.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable-3level.h
--- linux-3.2.22/arch/x86/include/asm/pgtable-3level.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable-3level.h	2012-07-11 20:20:37.014116656 +0200
@@ -92,12 +92,16 @@ static inline void native_set_pte_atomic
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd));
+	pax_close_kernel();
 }
 
 static inline void native_set_pud(pud_t *pudp, pud_t pud)
 {
+	pax_open_kernel();
 	set_64bit((unsigned long long *)(pudp), native_pud_val(pud));
+	pax_close_kernel();
 }
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable_64.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable_64.h
--- linux-3.2.22/arch/x86/include/asm/pgtable_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable_64.h	2012-07-11 20:20:37.017450359 +0200
@@ -16,10 +16,14 @@
 
 extern pud_t level3_kernel_pgt[512];
 extern pud_t level3_ident_pgt[512];
+extern pud_t level3_vmalloc_start_pgt[512];
+extern pud_t level3_vmalloc_end_pgt[512];
+extern pud_t level3_vmemmap_pgt[512];
+extern pud_t level2_vmemmap_pgt[512];
 extern pmd_t level2_kernel_pgt[512];
 extern pmd_t level2_fixmap_pgt[512];
-extern pmd_t level2_ident_pgt[512];
-extern pgd_t init_level4_pgt[];
+extern pmd_t level2_ident_pgt[512*2];
+extern pgd_t init_level4_pgt[512];
 
 #define swapper_pg_dir init_level4_pgt
 
@@ -61,7 +65,9 @@ static inline void native_set_pte_atomic
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	*pmdp = pmd;
+	pax_close_kernel();
 }
 
 static inline void native_pmd_clear(pmd_t *pmd)
@@ -97,7 +103,9 @@ static inline pmd_t native_pmdp_get_and_
 
 static inline void native_set_pud(pud_t *pudp, pud_t pud)
 {
+	pax_open_kernel();
 	*pudp = pud;
+	pax_close_kernel();
 }
 
 static inline void native_pud_clear(pud_t *pud)
@@ -107,6 +115,13 @@ static inline void native_pud_clear(pud_
 
 static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
 {
+	pax_open_kernel();
+	*pgdp = pgd;
+	pax_close_kernel();
+}
+
+static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
+{
 	*pgdp = pgd;
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable_64_types.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable_64_types.h
--- linux-3.2.22/arch/x86/include/asm/pgtable_64_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable_64_types.h	2012-07-11 20:20:37.017450359 +0200
@@ -59,5 +59,10 @@ typedef struct { pteval_t pte; } pte_t;
 #define MODULES_VADDR    _AC(0xffffffffa0000000, UL)
 #define MODULES_END      _AC(0xffffffffff000000, UL)
 #define MODULES_LEN   (MODULES_END - MODULES_VADDR)
+#define MODULES_EXEC_VADDR MODULES_VADDR
+#define MODULES_EXEC_END MODULES_END
+
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
 
 #endif /* _ASM_X86_PGTABLE_64_DEFS_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable.h
--- linux-3.2.22/arch/x86/include/asm/pgtable.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable.h	2012-07-11 20:20:37.014116656 +0200
@@ -44,6 +44,7 @@ extern struct mm_struct *pgd_page_get_mm
 
 #ifndef __PAGETABLE_PUD_FOLDED
 #define set_pgd(pgdp, pgd)		native_set_pgd(pgdp, pgd)
+#define set_pgd_batched(pgdp, pgd)	native_set_pgd_batched(pgdp, pgd)
 #define pgd_clear(pgd)			native_pgd_clear(pgd)
 #endif
 
@@ -81,12 +82,51 @@ extern struct mm_struct *pgd_page_get_mm
 
 #define arch_end_context_switch(prev)	do {} while(0)
 
+#define pax_open_kernel()	native_pax_open_kernel()
+#define pax_close_kernel()	native_pax_close_kernel()
 #endif	/* CONFIG_PARAVIRT */
 
+#define  __HAVE_ARCH_PAX_OPEN_KERNEL
+#define  __HAVE_ARCH_PAX_CLOSE_KERNEL
+
+#ifdef CONFIG_PAX_KERNEXEC
+static inline unsigned long native_pax_open_kernel(void)
+{
+	unsigned long cr0;
+
+	preempt_disable();
+	barrier();
+	cr0 = read_cr0() ^ X86_CR0_WP;
+	BUG_ON(unlikely(cr0 & X86_CR0_WP));
+	write_cr0(cr0);
+	return cr0 ^ X86_CR0_WP;
+}
+
+static inline unsigned long native_pax_close_kernel(void)
+{
+	unsigned long cr0;
+
+	cr0 = read_cr0() ^ X86_CR0_WP;
+	BUG_ON(unlikely(!(cr0 & X86_CR0_WP)));
+	write_cr0(cr0);
+	barrier();
+	preempt_enable_no_resched();
+	return cr0 ^ X86_CR0_WP;
+}
+#else
+static inline unsigned long native_pax_open_kernel(void) { return 0; }
+static inline unsigned long native_pax_close_kernel(void) { return 0; }
+#endif
+
 /*
  * The following only work if pte_present() is true.
  * Undefined behaviour if not..
  */
+static inline int pte_user(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_USER;
+}
+
 static inline int pte_dirty(pte_t pte)
 {
 	return pte_flags(pte) & _PAGE_DIRTY;
@@ -196,9 +236,29 @@ static inline pte_t pte_wrprotect(pte_t 
 	return pte_clear_flags(pte, _PAGE_RW);
 }
 
+static inline pte_t pte_mkread(pte_t pte)
+{
+	return __pte(pte_val(pte) | _PAGE_USER);
+}
+
 static inline pte_t pte_mkexec(pte_t pte)
 {
-	return pte_clear_flags(pte, _PAGE_NX);
+#ifdef CONFIG_X86_PAE
+	if (__supported_pte_mask & _PAGE_NX)
+		return pte_clear_flags(pte, _PAGE_NX);
+	else
+#endif
+		return pte_set_flags(pte, _PAGE_USER);
+}
+
+static inline pte_t pte_exprotect(pte_t pte)
+{
+#ifdef CONFIG_X86_PAE
+	if (__supported_pte_mask & _PAGE_NX)
+		return pte_set_flags(pte, _PAGE_NX);
+	else
+#endif
+		return pte_clear_flags(pte, _PAGE_USER);
 }
 
 static inline pte_t pte_mkdirty(pte_t pte)
@@ -390,6 +450,15 @@ pte_t *populate_extra_pte(unsigned long 
 #endif
 
 #ifndef __ASSEMBLY__
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+extern pgd_t cpu_pgd[NR_CPUS][PTRS_PER_PGD];
+static inline pgd_t *get_cpu_pgd(unsigned int cpu)
+{
+	return cpu_pgd[cpu];
+}
+#endif
+
 #include <linux/mm_types.h>
 
 static inline int pte_none(pte_t pte)
@@ -560,7 +629,7 @@ static inline pud_t *pud_offset(pgd_t *p
 
 static inline int pgd_bad(pgd_t pgd)
 {
-	return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE;
+	return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE;
 }
 
 static inline int pgd_none(pgd_t pgd)
@@ -583,7 +652,12 @@ static inline int pgd_none(pgd_t pgd)
  * pgd_offset() returns a (pgd_t *)
  * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
  */
-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address)))
+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+#define pgd_offset_cpu(cpu, address) (get_cpu_pgd(cpu) + pgd_index(address))
+#endif
+
 /*
  * a shortcut which implies the use of the kernel's pgd, instead
  * of a process's
@@ -594,6 +668,20 @@ static inline int pgd_none(pgd_t pgd)
 #define KERNEL_PGD_BOUNDARY	pgd_index(PAGE_OFFSET)
 #define KERNEL_PGD_PTRS		(PTRS_PER_PGD - KERNEL_PGD_BOUNDARY)
 
+#ifdef CONFIG_X86_32
+#define USER_PGD_PTRS		KERNEL_PGD_BOUNDARY
+#else
+#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT
+#define USER_PGD_PTRS		(_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT))
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#define PAX_USER_SHADOW_BASE	(_AC(1,UL) << TASK_SIZE_MAX_SHIFT)
+#else
+#define PAX_USER_SHADOW_BASE	(_AC(0,UL))
+#endif
+
+#endif
+
 #ifndef __ASSEMBLY__
 
 extern int direct_gbpages;
@@ -758,11 +846,23 @@ static inline void pmdp_set_wrprotect(st
  * dst and src can be on the same page, but the range must not overlap,
  * and must not cross a page boundary.
  */
-static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
+static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count)
 {
-       memcpy(dst, src, count * sizeof(pgd_t));
+	pax_open_kernel();
+	while (count--)
+		*dst++ = *src++;
+	pax_close_kernel();
 }
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src);
+#endif
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src);
+#else
+static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {}
+#endif
 
 #include <asm-generic/pgtable.h>
 #endif	/* __ASSEMBLY__ */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/pgtable_types.h linux-3.2.22-g-v/arch/x86/include/asm/pgtable_types.h
--- linux-3.2.22/arch/x86/include/asm/pgtable_types.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/pgtable_types.h	2012-07-11 20:20:37.017450359 +0200
@@ -16,13 +16,12 @@
 #define _PAGE_BIT_PSE		7	/* 4 MB (or 2MB) page */
 #define _PAGE_BIT_PAT		7	/* on 4KB pages */
 #define _PAGE_BIT_GLOBAL	8	/* Global TLB entry PPro+ */
-#define _PAGE_BIT_UNUSED1	9	/* available for programmer */
+#define _PAGE_BIT_SPECIAL	9	/* special mappings, no associated struct page */
 #define _PAGE_BIT_IOMAP		10	/* flag used to indicate IO mapping */
 #define _PAGE_BIT_HIDDEN	11	/* hidden by kmemcheck */
 #define _PAGE_BIT_PAT_LARGE	12	/* On 2MB or 1GB pages */
-#define _PAGE_BIT_SPECIAL	_PAGE_BIT_UNUSED1
-#define _PAGE_BIT_CPA_TEST	_PAGE_BIT_UNUSED1
-#define _PAGE_BIT_SPLITTING	_PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */
+#define _PAGE_BIT_CPA_TEST	_PAGE_BIT_SPECIAL
+#define _PAGE_BIT_SPLITTING	_PAGE_BIT_SPECIAL /* only valid on a PSE pmd */
 #define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */
 
 /* If _PAGE_BIT_PRESENT is clear, we use these: */
@@ -40,7 +39,6 @@
 #define _PAGE_DIRTY	(_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
 #define _PAGE_PSE	(_AT(pteval_t, 1) << _PAGE_BIT_PSE)
 #define _PAGE_GLOBAL	(_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
-#define _PAGE_UNUSED1	(_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
 #define _PAGE_IOMAP	(_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
 #define _PAGE_PAT	(_AT(pteval_t, 1) << _PAGE_BIT_PAT)
 #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
@@ -57,8 +55,10 @@
 
 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 #define _PAGE_NX	(_AT(pteval_t, 1) << _PAGE_BIT_NX)
-#else
+#elif defined(CONFIG_KMEMCHECK)
 #define _PAGE_NX	(_AT(pteval_t, 0))
+#else
+#define _PAGE_NX	(_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
 #endif
 
 #define _PAGE_FILE	(_AT(pteval_t, 1) << _PAGE_BIT_FILE)
@@ -96,6 +96,9 @@
 #define PAGE_READONLY_EXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
 					 _PAGE_ACCESSED)
 
+#define PAGE_READONLY_NOEXEC PAGE_READONLY
+#define PAGE_SHARED_NOEXEC PAGE_SHARED
+
 #define __PAGE_KERNEL_EXEC						\
 	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
 #define __PAGE_KERNEL		(__PAGE_KERNEL_EXEC | _PAGE_NX)
@@ -106,7 +109,7 @@
 #define __PAGE_KERNEL_WC		(__PAGE_KERNEL | _PAGE_CACHE_WC)
 #define __PAGE_KERNEL_NOCACHE		(__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_UC_MINUS		(__PAGE_KERNEL | _PAGE_PCD)
-#define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RX | _PAGE_USER)
+#define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RO | _PAGE_USER)
 #define __PAGE_KERNEL_VVAR		(__PAGE_KERNEL_RO | _PAGE_USER)
 #define __PAGE_KERNEL_VVAR_NOCACHE	(__PAGE_KERNEL_VVAR | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_LARGE		(__PAGE_KERNEL | _PAGE_PSE)
@@ -168,8 +171,8 @@
  * bits are combined, this will alow user to access the high address mapped
  * VDSO in the presence of CONFIG_COMPAT_VDSO
  */
-#define PTE_IDENT_ATTR	 0x003		/* PRESENT+RW */
-#define PDE_IDENT_ATTR	 0x067		/* PRESENT+RW+USER+DIRTY+ACCESSED */
+#define PTE_IDENT_ATTR	 0x063		/* PRESENT+RW+DIRTY+ACCESSED */
+#define PDE_IDENT_ATTR	 0x063		/* PRESENT+RW+DIRTY+ACCESSED */
 #define PGD_IDENT_ATTR	 0x001		/* PRESENT (no other attributes) */
 #endif
 
@@ -207,7 +210,17 @@ static inline pgdval_t pgd_flags(pgd_t p
 {
 	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
 }
+#endif
+
+#if PAGETABLE_LEVELS == 3
+#include <asm-generic/pgtable-nopud.h>
+#endif
+
+#if PAGETABLE_LEVELS == 2
+#include <asm-generic/pgtable-nopmd.h>
+#endif
 
+#ifndef __ASSEMBLY__
 #if PAGETABLE_LEVELS > 3
 typedef struct { pudval_t pud; } pud_t;
 
@@ -221,8 +234,6 @@ static inline pudval_t native_pud_val(pu
 	return pud.pud;
 }
 #else
-#include <asm-generic/pgtable-nopud.h>
-
 static inline pudval_t native_pud_val(pud_t pud)
 {
 	return native_pgd_val(pud.pgd);
@@ -242,8 +253,6 @@ static inline pmdval_t native_pmd_val(pm
 	return pmd.pmd;
 }
 #else
-#include <asm-generic/pgtable-nopmd.h>
-
 static inline pmdval_t native_pmd_val(pmd_t pmd)
 {
 	return native_pgd_val(pmd.pud.pgd);
@@ -283,7 +292,6 @@ typedef struct page *pgtable_t;
 
 extern pteval_t __supported_pte_mask;
 extern void set_nx(void);
-extern int nx_enabled;
 
 #define pgprot_writecombine	pgprot_writecombine
 extern pgprot_t pgprot_writecombine(pgprot_t prot);
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/processor.h linux-3.2.22-g-v/arch/x86/include/asm/processor.h
--- linux-3.2.22/arch/x86/include/asm/processor.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/processor.h	2012-07-11 20:20:37.020643954 +0200
@@ -268,7 +268,7 @@ struct tss_struct {
 
 } ____cacheline_aligned;
 
-DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss);
+extern struct tss_struct init_tss[NR_CPUS];
 
 /*
  * Save the original ist values for checking stack pointers during debugging
@@ -861,11 +861,18 @@ static inline void spin_lock_prefetch(co
  */
 #define TASK_SIZE		PAGE_OFFSET
 #define TASK_SIZE_MAX		TASK_SIZE
+
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_SIZE	(TASK_SIZE / 2)
+#define STACK_TOP		((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
+#else
 #define STACK_TOP		TASK_SIZE
-#define STACK_TOP_MAX		STACK_TOP
+#endif
+
+#define STACK_TOP_MAX		TASK_SIZE
 
 #define INIT_THREAD  {							  \
-	.sp0			= sizeof(init_stack) + (long)&init_stack, \
+	.sp0			= sizeof(init_stack) + (long)&init_stack - 8, \
 	.vm86_info		= NULL,					  \
 	.sysenter_cs		= __KERNEL_CS,				  \
 	.io_bitmap_ptr		= NULL,					  \
@@ -879,7 +886,7 @@ static inline void spin_lock_prefetch(co
  */
 #define INIT_TSS  {							  \
 	.x86_tss = {							  \
-		.sp0		= sizeof(init_stack) + (long)&init_stack, \
+		.sp0		= sizeof(init_stack) + (long)&init_stack - 8, \
 		.ss0		= __KERNEL_DS,				  \
 		.ss1		= __KERNEL_CS,				  \
 		.io_bitmap_base	= INVALID_IO_BITMAP_OFFSET,		  \
@@ -890,11 +897,7 @@ static inline void spin_lock_prefetch(co
 extern unsigned long thread_saved_pc(struct task_struct *tsk);
 
 #define THREAD_SIZE_LONGS      (THREAD_SIZE/sizeof(unsigned long))
-#define KSTK_TOP(info)                                                 \
-({                                                                     \
-       unsigned long *__ptr = (unsigned long *)(info);                 \
-       (unsigned long)(&__ptr[THREAD_SIZE_LONGS]);                     \
-})
+#define KSTK_TOP(info)         ((container_of(info, struct task_struct, tinfo))->thread.sp0)
 
 /*
  * The below -8 is to reserve 8 bytes on top of the ring0 stack.
@@ -909,7 +912,7 @@ extern unsigned long thread_saved_pc(str
 #define task_pt_regs(task)                                             \
 ({                                                                     \
        struct pt_regs *__regs__;                                       \
-       __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \
+       __regs__ = (struct pt_regs *)((task)->thread.sp0);              \
        __regs__ - 1;                                                   \
 })
 
@@ -919,13 +922,13 @@ extern unsigned long thread_saved_pc(str
 /*
  * User space process size. 47bits minus one guard page.
  */
-#define TASK_SIZE_MAX	((1UL << 47) - PAGE_SIZE)
+#define TASK_SIZE_MAX	((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE)
 
 /* This decides where the kernel will search for a free chunk of vm
  * space during mmap's.
  */
 #define IA32_PAGE_OFFSET	((current->personality & ADDR_LIMIT_3GB) ? \
-					0xc0000000 : 0xFFFFe000)
+					0xc0000000 : 0xFFFFf000)
 
 #define TASK_SIZE		(test_thread_flag(TIF_IA32) ? \
 					IA32_PAGE_OFFSET : TASK_SIZE_MAX)
@@ -936,11 +939,11 @@ extern unsigned long thread_saved_pc(str
 #define STACK_TOP_MAX		TASK_SIZE_MAX
 
 #define INIT_THREAD  { \
-	.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
+	.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
 }
 
 #define INIT_TSS  { \
-	.x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
+	.x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
 }
 
 /*
@@ -962,6 +965,10 @@ extern void start_thread(struct pt_regs 
  */
 #define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 3))
 
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_UNMAPPED_BASE	(PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3))
+#endif
+
 #define KSTK_EIP(task)		(task_pt_regs(task)->ip)
 
 /* Get/set a process' ability to use the timestamp counter instruction */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/ptrace.h linux-3.2.22-g-v/arch/x86/include/asm/ptrace.h
--- linux-3.2.22/arch/x86/include/asm/ptrace.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/ptrace.h	2012-07-11 20:20:37.020643954 +0200
@@ -156,28 +156,29 @@ static inline unsigned long regs_return_
 }
 
 /*
- * user_mode_vm(regs) determines whether a register set came from user mode.
+ * user_mode(regs) determines whether a register set came from user mode.
  * This is true if V8086 mode was enabled OR if the register set was from
  * protected mode with RPL-3 CS value.  This tricky test checks that with
  * one comparison.  Many places in the kernel can bypass this full check
- * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
+ * if they have already ruled out V8086 mode, so user_mode_novm(regs) can
+ * be used.
  */
-static inline int user_mode(struct pt_regs *regs)
+static inline int user_mode_novm(struct pt_regs *regs)
 {
 #ifdef CONFIG_X86_32
 	return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
 #else
-	return !!(regs->cs & 3);
+	return !!(regs->cs & SEGMENT_RPL_MASK);
 #endif
 }
 
-static inline int user_mode_vm(struct pt_regs *regs)
+static inline int user_mode(struct pt_regs *regs)
 {
 #ifdef CONFIG_X86_32
 	return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >=
 		USER_RPL;
 #else
-	return user_mode(regs);
+	return user_mode_novm(regs);
 #endif
 }
 
@@ -193,15 +194,16 @@ static inline int v8086_mode(struct pt_r
 #ifdef CONFIG_X86_64
 static inline bool user_64bit_mode(struct pt_regs *regs)
 {
+	unsigned long cs = regs->cs & 0xffff;
 #ifndef CONFIG_PARAVIRT
 	/*
 	 * On non-paravirt systems, this is the only long mode CPL 3
 	 * selector.  We do not allow long mode selectors in the LDT.
 	 */
-	return regs->cs == __USER_CS;
+	return cs == __USER_CS;
 #else
 	/* Headers are too twisted for this to go in paravirt.h. */
-	return regs->cs == __USER_CS || regs->cs == pv_info.extra_user_64bit_cs;
+	return cs == __USER_CS || cs == pv_info.extra_user_64bit_cs;
 #endif
 }
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/reboot.h linux-3.2.22-g-v/arch/x86/include/asm/reboot.h
--- linux-3.2.22/arch/x86/include/asm/reboot.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/reboot.h	2012-07-11 20:20:37.020643954 +0200
@@ -6,19 +6,19 @@
 struct pt_regs;
 
 struct machine_ops {
-	void (*restart)(char *cmd);
-	void (*halt)(void);
-	void (*power_off)(void);
+	void (* __noreturn restart)(char *cmd);
+	void (* __noreturn halt)(void);
+	void (* __noreturn power_off)(void);
 	void (*shutdown)(void);
 	void (*crash_shutdown)(struct pt_regs *);
-	void (*emergency_restart)(void);
-};
+	void (* __noreturn emergency_restart)(void);
+} __no_const;
 
 extern struct machine_ops machine_ops;
 
 void native_machine_crash_shutdown(struct pt_regs *regs);
 void native_machine_shutdown(void);
-void machine_real_restart(unsigned int type);
+void machine_real_restart(unsigned int type) __noreturn;
 /* These must match dispatch_table in reboot_32.S */
 #define MRR_BIOS	0
 #define MRR_APM		1
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/rwsem.h linux-3.2.22-g-v/arch/x86/include/asm/rwsem.h
--- linux-3.2.22/arch/x86/include/asm/rwsem.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/rwsem.h	2012-07-11 20:20:37.020643954 +0200
@@ -64,6 +64,14 @@ static inline void __down_read(struct rw
 {
 	asm volatile("# beginning down_read\n\t"
 		     LOCK_PREFIX _ASM_INC "(%1)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_DEC "(%1)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* adds 0x00000001 */
 		     "  jns        1f\n"
 		     "  call call_rwsem_down_read_failed\n"
@@ -85,6 +93,14 @@ static inline int __down_read_trylock(st
 		     "1:\n\t"
 		     "  mov          %1,%2\n\t"
 		     "  add          %3,%2\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "sub %3,%2\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "  jle	     2f\n\t"
 		     LOCK_PREFIX "  cmpxchg  %2,%0\n\t"
 		     "  jnz	     1b\n\t"
@@ -104,6 +120,14 @@ static inline void __down_write_nested(s
 	long tmp;
 	asm volatile("# beginning down_write\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* adds 0xffff0001, returns the old value */
 		     "  test      %1,%1\n\t"
 		     /* was the count 0 before? */
@@ -141,6 +165,14 @@ static inline void __up_read(struct rw_s
 	long tmp;
 	asm volatile("# beginning __up_read\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* subtracts 1, returns the old value */
 		     "  jns        1f\n\t"
 		     "  call call_rwsem_wake\n" /* expects old value in %edx */
@@ -159,6 +191,14 @@ static inline void __up_write(struct rw_
 	long tmp;
 	asm volatile("# beginning __up_write\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* subtracts 0xffff0001, returns the old value */
 		     "  jns        1f\n\t"
 		     "  call call_rwsem_wake\n" /* expects old value in %edx */
@@ -176,6 +216,14 @@ static inline void __downgrade_write(str
 {
 	asm volatile("# beginning __downgrade_write\n\t"
 		     LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_SUB "%2,(%1)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /*
 		      * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386)
 		      *     0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64)
@@ -194,7 +242,15 @@ static inline void __downgrade_write(str
  */
 static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
 {
-	asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0"
+	asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_SUB "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (sem->count)
 		     : "er" (delta));
 }
@@ -204,7 +260,7 @@ static inline void rwsem_atomic_add(long
  */
 static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 {
-	return delta + xadd(&sem->count, delta);
+	return delta + xadd_check_overflow(&sem->count, delta);
 }
 
 #endif /* __KERNEL__ */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/segment.h linux-3.2.22-g-v/arch/x86/include/asm/segment.h
--- linux-3.2.22/arch/x86/include/asm/segment.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/segment.h	2012-07-11 20:20:37.020643954 +0200
@@ -64,10 +64,15 @@
  *  26 - ESPFIX small SS
  *  27 - per-cpu			[ offset to per-cpu data area ]
  *  28 - stack_canary-20		[ for stack protector ]
- *  29 - unused
- *  30 - unused
+ *  29 - PCI BIOS CS
+ *  30 - PCI BIOS DS
  *  31 - TSS for double fault handler
  */
+#define GDT_ENTRY_KERNEXEC_EFI_CS	(1)
+#define GDT_ENTRY_KERNEXEC_EFI_DS	(2)
+#define __KERNEXEC_EFI_CS	(GDT_ENTRY_KERNEXEC_EFI_CS*8)
+#define __KERNEXEC_EFI_DS	(GDT_ENTRY_KERNEXEC_EFI_DS*8)
+
 #define GDT_ENTRY_TLS_MIN	6
 #define GDT_ENTRY_TLS_MAX 	(GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
 
@@ -79,6 +84,8 @@
 
 #define GDT_ENTRY_KERNEL_CS		(GDT_ENTRY_KERNEL_BASE+0)
 
+#define GDT_ENTRY_KERNEXEC_KERNEL_CS	(4)
+
 #define GDT_ENTRY_KERNEL_DS		(GDT_ENTRY_KERNEL_BASE+1)
 
 #define GDT_ENTRY_TSS			(GDT_ENTRY_KERNEL_BASE+4)
@@ -104,6 +111,12 @@
 #define __KERNEL_STACK_CANARY		0
 #endif
 
+#define GDT_ENTRY_PCIBIOS_CS		(GDT_ENTRY_KERNEL_BASE+17)
+#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8)
+
+#define GDT_ENTRY_PCIBIOS_DS		(GDT_ENTRY_KERNEL_BASE+18)
+#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8)
+
 #define GDT_ENTRY_DOUBLEFAULT_TSS	31
 
 /*
@@ -141,7 +154,7 @@
  */
 
 /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */
-#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
+#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16)
 
 
 #else
@@ -165,6 +178,8 @@
 #define __USER32_CS   (GDT_ENTRY_DEFAULT_USER32_CS*8+3)
 #define __USER32_DS	__USER_DS
 
+#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7
+
 #define GDT_ENTRY_TSS 8	/* needs two entries */
 #define GDT_ENTRY_LDT 10 /* needs two entries */
 #define GDT_ENTRY_TLS_MIN 12
@@ -185,6 +200,7 @@
 #endif
 
 #define __KERNEL_CS	(GDT_ENTRY_KERNEL_CS*8)
+#define __KERNEXEC_KERNEL_CS	(GDT_ENTRY_KERNEXEC_KERNEL_CS*8)
 #define __KERNEL_DS	(GDT_ENTRY_KERNEL_DS*8)
 #define __USER_DS	(GDT_ENTRY_DEFAULT_USER_DS*8+3)
 #define __USER_CS	(GDT_ENTRY_DEFAULT_USER_CS*8+3)
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/smp.h linux-3.2.22-g-v/arch/x86/include/asm/smp.h
--- linux-3.2.22/arch/x86/include/asm/smp.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/smp.h	2012-07-11 20:20:37.023976577 +0200
@@ -36,7 +36,7 @@ DECLARE_PER_CPU(cpumask_var_t, cpu_core_
 /* cpus sharing the last level cache: */
 DECLARE_PER_CPU(cpumask_var_t, cpu_llc_shared_map);
 DECLARE_PER_CPU(u16, cpu_llc_id);
-DECLARE_PER_CPU(int, cpu_number);
+DECLARE_PER_CPU(unsigned int, cpu_number);
 
 static inline struct cpumask *cpu_sibling_mask(int cpu)
 {
@@ -77,7 +77,7 @@ struct smp_ops {
 
 	void (*send_call_func_ipi)(const struct cpumask *mask);
 	void (*send_call_func_single_ipi)(int cpu);
-};
+} __no_const;
 
 /* Globals due to paravirt */
 extern void set_cpu_sibling_map(int cpu);
@@ -192,14 +192,8 @@ extern unsigned disabled_cpus __cpuinitd
 extern int safe_smp_processor_id(void);
 
 #elif defined(CONFIG_X86_64_SMP)
-#define raw_smp_processor_id() (percpu_read(cpu_number))
-
-#define stack_smp_processor_id()					\
-({								\
-	struct thread_info *ti;						\
-	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK));	\
-	ti->cpu;							\
-})
+#define raw_smp_processor_id()		(percpu_read(cpu_number))
+#define stack_smp_processor_id()	raw_smp_processor_id()
 #define safe_smp_processor_id()		smp_processor_id()
 
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/spinlock.h linux-3.2.22-g-v/arch/x86/include/asm/spinlock.h
--- linux-3.2.22/arch/x86/include/asm/spinlock.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/spinlock.h	2012-07-11 20:20:37.023976577 +0200
@@ -188,6 +188,14 @@ static inline int arch_write_can_lock(ar
 static inline void arch_read_lock(arch_rwlock_t *rw)
 {
 	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(dec) " (%0)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX READ_LOCK_SIZE(inc) " (%0)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "jns 1f\n"
 		     "call __read_lock_failed\n\t"
 		     "1:\n"
@@ -197,6 +205,14 @@ static inline void arch_read_lock(arch_r
 static inline void arch_write_lock(arch_rwlock_t *rw)
 {
 	asm volatile(LOCK_PREFIX WRITE_LOCK_SUB(%1) "(%0)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX WRITE_LOCK_ADD(%1) "(%0)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "jz 1f\n"
 		     "call __write_lock_failed\n\t"
 		     "1:\n"
@@ -226,13 +242,29 @@ static inline int arch_write_trylock(arc
 
 static inline void arch_read_unlock(arch_rwlock_t *rw)
 {
-	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0"
+	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX READ_LOCK_SIZE(dec) " %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     :"+m" (rw->lock) : : "memory");
 }
 
 static inline void arch_write_unlock(arch_rwlock_t *rw)
 {
-	asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0"
+	asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX WRITE_LOCK_SUB(%1) "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (rw->write) : "i" (RW_LOCK_BIAS) : "memory");
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/stackprotector.h linux-3.2.22-g-v/arch/x86/include/asm/stackprotector.h
--- linux-3.2.22/arch/x86/include/asm/stackprotector.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/stackprotector.h	2012-07-11 20:20:37.023976577 +0200
@@ -48,7 +48,7 @@
  * head_32 for boot CPU and setup_per_cpu_areas() for others.
  */
 #define GDT_STACK_CANARY_INIT						\
-	[GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18),
+	[GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17),
 
 /*
  * Initialize the stackprotector canary value.
@@ -113,7 +113,7 @@ static inline void setup_stack_canary_se
 
 static inline void load_stack_canary_segment(void)
 {
-#ifdef CONFIG_X86_32
+#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF)
 	asm volatile ("mov %0, %%gs" : : "r" (0));
 #endif
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/stacktrace.h linux-3.2.22-g-v/arch/x86/include/asm/stacktrace.h
--- linux-3.2.22/arch/x86/include/asm/stacktrace.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/stacktrace.h	2012-07-11 20:20:37.023976577 +0200
@@ -11,28 +11,20 @@
 
 extern int kstack_depth_to_print;
 
-struct thread_info;
+struct task_struct;
 struct stacktrace_ops;
 
-typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
-				      unsigned long *stack,
-				      unsigned long bp,
-				      const struct stacktrace_ops *ops,
-				      void *data,
-				      unsigned long *end,
-				      int *graph);
-
-extern unsigned long
-print_context_stack(struct thread_info *tinfo,
-		    unsigned long *stack, unsigned long bp,
-		    const struct stacktrace_ops *ops, void *data,
-		    unsigned long *end, int *graph);
+typedef unsigned long walk_stack_t(struct task_struct *task,
+				   void *stack_start,
+				   unsigned long *stack,
+				   unsigned long bp,
+				   const struct stacktrace_ops *ops,
+				   void *data,
+				   unsigned long *end,
+				   int *graph);
 
-extern unsigned long
-print_context_stack_bp(struct thread_info *tinfo,
-		       unsigned long *stack, unsigned long bp,
-		       const struct stacktrace_ops *ops, void *data,
-		       unsigned long *end, int *graph);
+extern walk_stack_t print_context_stack;
+extern walk_stack_t print_context_stack_bp;
 
 /* Generic stack tracer with callbacks */
 
@@ -40,7 +32,7 @@ struct stacktrace_ops {
 	void (*address)(void *data, unsigned long address, int reliable);
 	/* On negative return stop dumping */
 	int (*stack)(void *data, char *name);
-	walk_stack_t	walk_stack;
+	walk_stack_t	*walk_stack;
 };
 
 void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/sys_ia32.h linux-3.2.22-g-v/arch/x86/include/asm/sys_ia32.h
--- linux-3.2.22/arch/x86/include/asm/sys_ia32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/sys_ia32.h	2012-07-11 20:20:37.023976577 +0200
@@ -40,7 +40,7 @@ asmlinkage long sys32_rt_sigprocmask(int
 				     compat_sigset_t __user *, unsigned int);
 asmlinkage long sys32_alarm(unsigned int);
 
-asmlinkage long sys32_waitpid(compat_pid_t, unsigned int *, int);
+asmlinkage long sys32_waitpid(compat_pid_t, unsigned int __user *, int);
 asmlinkage long sys32_sysfs(int, u32, u32);
 
 asmlinkage long sys32_sched_rr_get_interval(compat_pid_t,
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/system.h linux-3.2.22-g-v/arch/x86/include/asm/system.h
--- linux-3.2.22/arch/x86/include/asm/system.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/system.h	2012-07-11 20:20:37.023976577 +0200
@@ -129,7 +129,7 @@ do {									\
 	     "call __switch_to\n\t"					  \
 	     "movq "__percpu_arg([current_task])",%%rsi\n\t"		  \
 	     __switch_canary						  \
-	     "movq %P[thread_info](%%rsi),%%r8\n\t"			  \
+	     "movq "__percpu_arg([thread_info])",%%r8\n\t"		  \
 	     "movq %%rax,%%rdi\n\t" 					  \
 	     "testl  %[_tif_fork],%P[ti_flags](%%r8)\n\t"		  \
 	     "jnz   ret_from_fork\n\t"					  \
@@ -140,7 +140,7 @@ do {									\
 	       [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
 	       [ti_flags] "i" (offsetof(struct thread_info, flags)),	  \
 	       [_tif_fork] "i" (_TIF_FORK),			  	  \
-	       [thread_info] "i" (offsetof(struct task_struct, stack)),   \
+	       [thread_info] "m" (current_tinfo),			  \
 	       [current_task] "m" (current_task)			  \
 	       __switch_canary_iparam					  \
 	     : "memory", "cc" __EXTRA_CLOBBER)
@@ -200,7 +200,7 @@ static inline unsigned long get_limit(un
 {
 	unsigned long __limit;
 	asm("lsll %1,%0" : "=r" (__limit) : "r" (segment));
-	return __limit + 1;
+	return __limit;
 }
 
 static inline void native_clts(void)
@@ -397,13 +397,13 @@ void enable_hlt(void);
 
 void cpu_idle_wait(void);
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
 
 void default_idle(void);
 bool set_pm_idle_to_default(void);
 
-void stop_this_cpu(void *dummy);
+void stop_this_cpu(void *dummy) __noreturn;
 
 /*
  * Force strict CPU ordering.
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/thread_info.h linux-3.2.22-g-v/arch/x86/include/asm/thread_info.h
--- linux-3.2.22/arch/x86/include/asm/thread_info.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/thread_info.h	2012-07-11 20:20:37.027285117 +0200
@@ -10,6 +10,7 @@
 #include <linux/compiler.h>
 #include <asm/page.h>
 #include <asm/types.h>
+#include <asm/percpu.h>
 
 /*
  * low level task data that entry.S needs immediate access to
@@ -24,7 +25,6 @@ struct exec_domain;
 #include <linux/atomic.h>
 
 struct thread_info {
-	struct task_struct	*task;		/* main task structure */
 	struct exec_domain	*exec_domain;	/* execution domain */
 	__u32			flags;		/* low level flags */
 	__u32			status;		/* thread synchronous flags */
@@ -34,18 +34,12 @@ struct thread_info {
 	mm_segment_t		addr_limit;
 	struct restart_block    restart_block;
 	void __user		*sysenter_return;
-#ifdef CONFIG_X86_32
-	unsigned long           previous_esp;   /* ESP of the previous stack in
-						   case of nested (IRQ) stacks
-						*/
-	__u8			supervisor_stack[0];
-#endif
+	unsigned long		lowest_stack;
 	int			uaccess_err;
 };
 
-#define INIT_THREAD_INFO(tsk)			\
+#define INIT_THREAD_INFO			\
 {						\
-	.task		= &tsk,			\
 	.exec_domain	= &default_exec_domain,	\
 	.flags		= 0,			\
 	.cpu		= 0,			\
@@ -56,7 +50,7 @@ struct thread_info {
 	},					\
 }
 
-#define init_thread_info	(init_thread_union.thread_info)
+#define init_thread_info	(init_thread_union.stack)
 #define init_stack		(init_thread_union.stack)
 
 #else /* !__ASSEMBLY__ */
@@ -95,6 +89,7 @@ struct thread_info {
 #define TIF_BLOCKSTEP		25	/* set when we want DEBUGCTLMSR_BTF */
 #define TIF_LAZY_MMU_UPDATES	27	/* task is updating the mmu lazily */
 #define TIF_SYSCALL_TRACEPOINT	28	/* syscall tracepoint instrumentation */
+#define TIF_GRSEC_SETXID	29	/* update credentials on syscall entry/exit */
 
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
@@ -117,16 +112,17 @@ struct thread_info {
 #define _TIF_BLOCKSTEP		(1 << TIF_BLOCKSTEP)
 #define _TIF_LAZY_MMU_UPDATES	(1 << TIF_LAZY_MMU_UPDATES)
 #define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
+#define _TIF_GRSEC_SETXID	(1 << TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_enter() */
 #define _TIF_WORK_SYSCALL_ENTRY	\
 	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT |	\
-	 _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT)
+	 _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_leave() */
 #define _TIF_WORK_SYSCALL_EXIT	\
 	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP |	\
-	 _TIF_SYSCALL_TRACEPOINT)
+	 _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK							\
@@ -136,7 +132,8 @@ struct thread_info {
 
 /* work to do on any return to user space */
 #define _TIF_ALLWORK_MASK						\
-	((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT)
+	((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT |	\
+	 _TIF_GRSEC_SETXID)
 
 /* Only used for 64 bit */
 #define _TIF_DO_NOTIFY_MASK						\
@@ -170,6 +167,23 @@ struct thread_info {
 	ret;								\
 })
 
+#ifdef __ASSEMBLY__
+/* how to get the thread information struct from ASM */
+#define GET_THREAD_INFO(reg)	 \
+	mov PER_CPU_VAR(current_tinfo), reg
+
+/* use this one if reg already contains %esp */
+#define GET_THREAD_INFO_WITH_ESP(reg) GET_THREAD_INFO(reg)
+#else
+/* how to get the thread information struct from C */
+DECLARE_PER_CPU(struct thread_info *, current_tinfo);
+
+static __always_inline struct thread_info *current_thread_info(void)
+{
+	return percpu_read_stable(current_tinfo);
+}
+#endif
+
 #ifdef CONFIG_X86_32
 
 #define STACK_WARN	(THREAD_SIZE/8)
@@ -180,35 +194,13 @@ struct thread_info {
  */
 #ifndef __ASSEMBLY__
 
-
 /* how to get the current stack pointer from C */
 register unsigned long current_stack_pointer asm("esp") __used;
 
-/* how to get the thread information struct from C */
-static inline struct thread_info *current_thread_info(void)
-{
-	return (struct thread_info *)
-		(current_stack_pointer & ~(THREAD_SIZE - 1));
-}
-
-#else /* !__ASSEMBLY__ */
-
-/* how to get the thread information struct from ASM */
-#define GET_THREAD_INFO(reg)	 \
-	movl $-THREAD_SIZE, reg; \
-	andl %esp, reg
-
-/* use this one if reg already contains %esp */
-#define GET_THREAD_INFO_WITH_ESP(reg) \
-	andl $-THREAD_SIZE, reg
-
 #endif
 
 #else /* X86_32 */
 
-#include <asm/percpu.h>
-#define KERNEL_STACK_OFFSET (5*8)
-
 /*
  * macros/functions for gaining access to the thread information structure
  * preempt_count needs to be 1 initially, until the scheduler is functional.
@@ -216,21 +208,8 @@ static inline struct thread_info *curren
 #ifndef __ASSEMBLY__
 DECLARE_PER_CPU(unsigned long, kernel_stack);
 
-static inline struct thread_info *current_thread_info(void)
-{
-	struct thread_info *ti;
-	ti = (void *)(percpu_read_stable(kernel_stack) +
-		      KERNEL_STACK_OFFSET - THREAD_SIZE);
-	return ti;
-}
-
-#else /* !__ASSEMBLY__ */
-
-/* how to get the thread information struct from ASM */
-#define GET_THREAD_INFO(reg) \
-	movq PER_CPU_VAR(kernel_stack),reg ; \
-	subq $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg
-
+/* how to get the current stack pointer from C */
+register unsigned long current_stack_pointer asm("rsp") __used;
 #endif
 
 #endif /* !X86_32 */
@@ -264,5 +243,16 @@ extern void arch_task_cache_init(void);
 extern void free_thread_info(struct thread_info *ti);
 extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
 #define arch_task_cache_init arch_task_cache_init
+
+#define __HAVE_THREAD_FUNCTIONS
+#define task_thread_info(task)	(&(task)->tinfo)
+#define task_stack_page(task)	((task)->stack)
+#define setup_thread_stack(p, org) do {} while (0)
+#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1)
+
+#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
+extern struct task_struct *alloc_task_struct_node(int node);
+extern void free_task_struct(struct task_struct *);
+
 #endif
 #endif /* _ASM_X86_THREAD_INFO_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/uaccess_32.h linux-3.2.22-g-v/arch/x86/include/asm/uaccess_32.h
--- linux-3.2.22/arch/x86/include/asm/uaccess_32.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/uaccess_32.h	2012-07-11 20:20:37.027285117 +0200
@@ -11,15 +11,15 @@
 #include <asm/page.h>
 
 unsigned long __must_check __copy_to_user_ll
-		(void __user *to, const void *from, unsigned long n);
+		(void __user *to, const void *from, unsigned long n) __size_overflow(3);
 unsigned long __must_check __copy_from_user_ll
-		(void *to, const void __user *from, unsigned long n);
+		(void *to, const void __user *from, unsigned long n) __size_overflow(3);
 unsigned long __must_check __copy_from_user_ll_nozero
-		(void *to, const void __user *from, unsigned long n);
+		(void *to, const void __user *from, unsigned long n) __size_overflow(3);
 unsigned long __must_check __copy_from_user_ll_nocache
-		(void *to, const void __user *from, unsigned long n);
+		(void *to, const void __user *from, unsigned long n) __size_overflow(3);
 unsigned long __must_check __copy_from_user_ll_nocache_nozero
-		(void *to, const void __user *from, unsigned long n);
+		(void *to, const void __user *from, unsigned long n) __size_overflow(3);
 
 /**
  * __copy_to_user_inatomic: - Copy a block of data into user space, with less checking.
@@ -43,6 +43,9 @@ unsigned long __must_check __copy_from_u
 static __always_inline unsigned long __must_check
 __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -61,6 +64,8 @@ __copy_to_user_inatomic(void __user *to,
 			return ret;
 		}
 	}
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
 	return __copy_to_user_ll(to, from, n);
 }
 
@@ -82,12 +87,16 @@ static __always_inline unsigned long __m
 __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	might_fault();
+
 	return __copy_to_user_inatomic(to, from, n);
 }
 
 static __always_inline unsigned long
 __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	/* Avoid zeroing the tail if the copy fails..
 	 * If 'n' is constant and 1, 2, or 4, we do still zero on a failure,
 	 * but as the zeroing behaviour is only significant when n is not
@@ -137,6 +146,10 @@ static __always_inline unsigned long
 __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -152,6 +165,8 @@ __copy_from_user(void *to, const void __
 			return ret;
 		}
 	}
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
 	return __copy_from_user_ll(to, from, n);
 }
 
@@ -159,6 +174,10 @@ static __always_inline unsigned long __c
 				const void __user *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -181,15 +200,19 @@ static __always_inline unsigned long
 __copy_from_user_inatomic_nocache(void *to, const void __user *from,
 				  unsigned long n)
 {
-       return __copy_from_user_ll_nocache_nozero(to, from, n);
-}
+	if ((long)n < 0)
+		return n;
 
-unsigned long __must_check copy_to_user(void __user *to,
-					const void *from, unsigned long n);
-unsigned long __must_check _copy_from_user(void *to,
-					  const void __user *from,
-					  unsigned long n);
+	return __copy_from_user_ll_nocache_nozero(to, from, n);
+}
 
+extern void copy_to_user_overflow(void)
+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
+	__compiletime_error("copy_to_user() buffer size is not provably correct")
+#else
+	__compiletime_warning("copy_to_user() buffer size is not provably correct")
+#endif
+;
 
 extern void copy_from_user_overflow(void)
 #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
@@ -199,17 +222,61 @@ extern void copy_from_user_overflow(void
 #endif
 ;
 
-static inline unsigned long __must_check copy_from_user(void *to,
-					  const void __user *from,
-					  unsigned long n)
+/**
+ * copy_to_user: - Copy a block of data into user space.
+ * @to:   Destination address, in user space.
+ * @from: Source address, in kernel space.
+ * @n:    Number of bytes to copy.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * Copy data from kernel space to user space.
+ *
+ * Returns number of bytes that could not be copied.
+ * On success, this will be zero.
+ */
+static inline unsigned long __must_check
+copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-	int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(from);
 
-	if (likely(sz == -1 || sz >= n))
-		n = _copy_from_user(to, from, n);
-	else
-		copy_from_user_overflow();
+	if (unlikely(sz != (size_t)-1 && sz < n))
+		copy_to_user_overflow();
+	else if (access_ok(VERIFY_WRITE, to, n))
+		n = __copy_to_user(to, from, n);
+	return n;
+}
 
+/**
+ * copy_from_user: - Copy a block of data from user space.
+ * @to:   Destination address, in kernel space.
+ * @from: Source address, in user space.
+ * @n:    Number of bytes to copy.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * Copy data from user space to kernel space.
+ *
+ * Returns number of bytes that could not be copied.
+ * On success, this will be zero.
+ *
+ * If some data could not be copied, this function will pad the copied
+ * data to the requested size using zero bytes.
+ */
+static inline unsigned long __must_check
+copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	size_t sz = __compiletime_object_size(to);
+
+	if (unlikely(sz != (size_t)-1 && sz < n))
+		copy_from_user_overflow();
+	else if (access_ok(VERIFY_READ, from, n))
+		n = __copy_from_user(to, from, n);
+	else if ((long)n > 0) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
+		memset(to, 0, n);
+	}
 	return n;
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/uaccess_64.h linux-3.2.22-g-v/arch/x86/include/asm/uaccess_64.h
--- linux-3.2.22/arch/x86/include/asm/uaccess_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/uaccess_64.h	2012-07-11 20:20:37.027285117 +0200
@@ -10,6 +10,9 @@
 #include <asm/alternative.h>
 #include <asm/cpufeature.h>
 #include <asm/page.h>
+#include <asm/pgtable.h>
+
+#define set_fs(x)	(current_thread_info()->addr_limit = (x))
 
 /*
  * Copy To/From Userspace
@@ -17,12 +20,14 @@
 
 /* Handles exceptions in both to and from, but doesn't do access_ok */
 __must_check unsigned long
-copy_user_generic_string(void *to, const void *from, unsigned len);
+copy_user_generic_string(void *to, const void *from, unsigned long len) __size_overflow(3);
 __must_check unsigned long
-copy_user_generic_unrolled(void *to, const void *from, unsigned len);
+copy_user_generic_unrolled(void *to, const void *from, unsigned long len) __size_overflow(3);
 
 static __always_inline __must_check unsigned long
-copy_user_generic(void *to, const void *from, unsigned len)
+copy_user_generic(void *to, const void *from, unsigned long len) __size_overflow(3);
+static __always_inline __must_check unsigned long
+copy_user_generic(void *to, const void *from, unsigned long len)
 {
 	unsigned ret;
 
@@ -32,142 +37,238 @@ copy_user_generic(void *to, const void *
 			 ASM_OUTPUT2("=a" (ret), "=D" (to), "=S" (from),
 				     "=d" (len)),
 			 "1" (to), "2" (from), "3" (len)
-			 : "memory", "rcx", "r8", "r9", "r10", "r11");
+			 : "memory", "rcx", "r8", "r9", "r11");
 	return ret;
 }
 
+static __always_inline __must_check unsigned long
+__copy_to_user(void __user *to, const void *from, unsigned long len) __size_overflow(3);
+static __always_inline __must_check unsigned long
+__copy_from_user(void *to, const void __user *from, unsigned long len) __size_overflow(3);
 __must_check unsigned long
-_copy_to_user(void __user *to, const void *from, unsigned len);
-__must_check unsigned long
-_copy_from_user(void *to, const void __user *from, unsigned len);
-__must_check unsigned long
-copy_in_user(void __user *to, const void __user *from, unsigned len);
+copy_in_user(void __user *to, const void __user *from, unsigned long len) __size_overflow(3);
+
+extern void copy_to_user_overflow(void)
+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
+	__compiletime_error("copy_to_user() buffer size is not provably correct")
+#else
+	__compiletime_warning("copy_to_user() buffer size is not provably correct")
+#endif
+;
+
+extern void copy_from_user_overflow(void)
+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
+	__compiletime_error("copy_from_user() buffer size is not provably correct")
+#else
+	__compiletime_warning("copy_from_user() buffer size is not provably correct")
+#endif
+;
 
 static inline unsigned long __must_check copy_from_user(void *to,
 					  const void __user *from,
 					  unsigned long n)
 {
-	int sz = __compiletime_object_size(to);
-
 	might_fault();
-	if (likely(sz == -1 || sz >= n))
-		n = _copy_from_user(to, from, n);
-#ifdef CONFIG_DEBUG_VM
-	else
-		WARN(1, "Buffer overflow detected!\n");
-#endif
+
+	if (access_ok(VERIFY_READ, from, n))
+		n = __copy_from_user(to, from, n);
+	else if (n < INT_MAX) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
+		memset(to, 0, n);
+	}
 	return n;
 }
 
 static __always_inline __must_check
-int copy_to_user(void __user *dst, const void *src, unsigned size)
+int copy_to_user(void __user *dst, const void *src, unsigned long size)
 {
 	might_fault();
 
-	return _copy_to_user(dst, src, size);
+	if (access_ok(VERIFY_WRITE, dst, size))
+		size = __copy_to_user(dst, src, size);
+	return size;
 }
 
 static __always_inline __must_check
-int __copy_from_user(void *dst, const void __user *src, unsigned size)
+unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size)
 {
-	int ret = 0;
+	size_t sz = __compiletime_object_size(dst);
+	unsigned ret = 0;
 
 	might_fault();
-	if (!__builtin_constant_p(size))
-		return copy_user_generic(dst, (__force void *)src, size);
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_READ, src, size))
+		return size;
+#endif
+
+	if (unlikely(sz != (size_t)-1 && sz < size)) {
+		copy_from_user_overflow();
+		return size;
+	}
+
+	if (!__builtin_constant_p(size)) {
+		check_object_size(dst, size, false);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+			src += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic(dst, (__force_kernel const void *)src, size);
+	}
 	switch (size) {
-	case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
+	case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src,
 			      ret, "b", "b", "=q", 1);
 		return ret;
-	case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
+	case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src,
 			      ret, "w", "w", "=r", 2);
 		return ret;
-	case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
+	case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src,
 			      ret, "l", "k", "=r", 4);
 		return ret;
-	case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+	case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			      ret, "q", "", "=r", 8);
 		return ret;
 	case 10:
-		__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+		__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			       ret, "q", "", "=r", 10);
 		if (unlikely(ret))
 			return ret;
 		__get_user_asm(*(u16 *)(8 + (char *)dst),
-			       (u16 __user *)(8 + (char __user *)src),
+			       (const u16 __user *)(8 + (const char __user *)src),
 			       ret, "w", "w", "=r", 2);
 		return ret;
 	case 16:
-		__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+		__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			       ret, "q", "", "=r", 16);
 		if (unlikely(ret))
 			return ret;
 		__get_user_asm(*(u64 *)(8 + (char *)dst),
-			       (u64 __user *)(8 + (char __user *)src),
+			       (const u64 __user *)(8 + (const char __user *)src),
 			       ret, "q", "", "=r", 8);
 		return ret;
 	default:
-		return copy_user_generic(dst, (__force void *)src, size);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+			src += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic(dst, (__force_kernel const void *)src, size);
 	}
 }
 
 static __always_inline __must_check
-int __copy_to_user(void __user *dst, const void *src, unsigned size)
+unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size)
 {
-	int ret = 0;
+	size_t sz = __compiletime_object_size(src);
+	unsigned ret = 0;
 
 	might_fault();
-	if (!__builtin_constant_p(size))
-		return copy_user_generic((__force void *)dst, src, size);
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_WRITE, dst, size))
+		return size;
+#endif
+
+	if (unlikely(sz != (size_t)-1 && sz < size)) {
+		copy_to_user_overflow();
+		return size;
+	}
+
+	if (!__builtin_constant_p(size)) {
+		check_object_size(src, size, true);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+			dst += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic((__force_kernel void *)dst, src, size);
+	}
 	switch (size) {
-	case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
+	case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst,
 			      ret, "b", "b", "iq", 1);
 		return ret;
-	case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
+	case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst,
 			      ret, "w", "w", "ir", 2);
 		return ret;
-	case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
+	case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst,
 			      ret, "l", "k", "ir", 4);
 		return ret;
-	case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+	case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			      ret, "q", "", "er", 8);
 		return ret;
 	case 10:
-		__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+		__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			       ret, "q", "", "er", 10);
 		if (unlikely(ret))
 			return ret;
 		asm("":::"memory");
-		__put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
+		__put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst,
 			       ret, "w", "w", "ir", 2);
 		return ret;
 	case 16:
-		__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+		__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			       ret, "q", "", "er", 16);
 		if (unlikely(ret))
 			return ret;
 		asm("":::"memory");
-		__put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
+		__put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst,
 			       ret, "q", "", "er", 8);
 		return ret;
 	default:
-		return copy_user_generic((__force void *)dst, src, size);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+			dst += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic((__force_kernel void *)dst, src, size);
 	}
 }
 
 static __always_inline __must_check
-int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
+unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned long size)
 {
-	int ret = 0;
+	unsigned ret = 0;
 
 	might_fault();
-	if (!__builtin_constant_p(size))
-		return copy_user_generic((__force void *)dst,
-					 (__force void *)src, size);
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_READ, src, size))
+		return size;
+	if (!__access_ok(VERIFY_WRITE, dst, size))
+		return size;
+#endif
+
+	if (!__builtin_constant_p(size)) {
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+			src += PAX_USER_SHADOW_BASE;
+		if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+			dst += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic((__force_kernel void *)dst,
+					 (__force_kernel const void *)src, size);
+	}
 	switch (size) {
 	case 1: {
 		u8 tmp;
-		__get_user_asm(tmp, (u8 __user *)src,
+		__get_user_asm(tmp, (const u8 __user *)src,
 			       ret, "b", "b", "=q", 1);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u8 __user *)dst,
@@ -176,7 +277,7 @@ int __copy_in_user(void __user *dst, con
 	}
 	case 2: {
 		u16 tmp;
-		__get_user_asm(tmp, (u16 __user *)src,
+		__get_user_asm(tmp, (const u16 __user *)src,
 			       ret, "w", "w", "=r", 2);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u16 __user *)dst,
@@ -186,7 +287,7 @@ int __copy_in_user(void __user *dst, con
 
 	case 4: {
 		u32 tmp;
-		__get_user_asm(tmp, (u32 __user *)src,
+		__get_user_asm(tmp, (const u32 __user *)src,
 			       ret, "l", "k", "=r", 4);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u32 __user *)dst,
@@ -195,7 +296,7 @@ int __copy_in_user(void __user *dst, con
 	}
 	case 8: {
 		u64 tmp;
-		__get_user_asm(tmp, (u64 __user *)src,
+		__get_user_asm(tmp, (const u64 __user *)src,
 			       ret, "q", "", "=r", 8);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u64 __user *)dst,
@@ -203,8 +304,16 @@ int __copy_in_user(void __user *dst, con
 		return ret;
 	}
 	default:
-		return copy_user_generic((__force void *)dst,
-					 (__force void *)src, size);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+			src += PAX_USER_SHADOW_BASE;
+		if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+			dst += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic((__force_kernel void *)dst,
+					 (__force_kernel const void *)src, size);
 	}
 }
 
@@ -215,39 +324,76 @@ __strncpy_from_user(char *dst, const cha
 __must_check long strnlen_user(const char __user *str, long n);
 __must_check long __strnlen_user(const char __user *str, long n);
 __must_check long strlen_user(const char __user *str);
-__must_check unsigned long clear_user(void __user *mem, unsigned long len);
-__must_check unsigned long __clear_user(void __user *mem, unsigned long len);
+__must_check unsigned long clear_user(void __user *mem, unsigned long len) __size_overflow(2);
+__must_check unsigned long __clear_user(void __user *mem, unsigned long len) __size_overflow(2);
 
 static __must_check __always_inline int
-__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size)
+__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size)
 {
-	return copy_user_generic(dst, (__force const void *)src, size);
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_READ, src, size))
+		return size;
+
+	if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+		src += PAX_USER_SHADOW_BASE;
+#endif
+
+	return copy_user_generic(dst, (__force_kernel const void *)src, size);
 }
 
-static __must_check __always_inline int
-__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
+static __must_check __always_inline unsigned long
+__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size)
 {
-	return copy_user_generic((__force void *)dst, src, size);
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_WRITE, dst, size))
+		return size;
+
+	if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+		dst += PAX_USER_SHADOW_BASE;
+#endif
+
+	return copy_user_generic((__force_kernel void *)dst, src, size);
 }
 
-extern long __copy_user_nocache(void *dst, const void __user *src,
-				unsigned size, int zerorest);
+extern unsigned long __copy_user_nocache(void *dst, const void __user *src,
+				unsigned long size, int zerorest) __size_overflow(3);
 
-static inline int
-__copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
+static inline unsigned long __copy_from_user_nocache(void *dst, const void __user *src, unsigned long size)
 {
 	might_sleep();
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_READ, src, size))
+		return size;
+#endif
+
 	return __copy_user_nocache(dst, src, size, 1);
 }
 
-static inline int
-__copy_from_user_inatomic_nocache(void *dst, const void __user *src,
-				  unsigned size)
+static inline unsigned long __copy_from_user_inatomic_nocache(void *dst, const void __user *src,
+				  unsigned long size)
 {
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!__access_ok(VERIFY_READ, src, size))
+		return size;
+#endif
+
 	return __copy_user_nocache(dst, src, size, 0);
 }
 
-unsigned long
-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest);
+extern unsigned long
+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3);
 
 #endif /* _ASM_X86_UACCESS_64_H */
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/uaccess.h linux-3.2.22-g-v/arch/x86/include/asm/uaccess.h
--- linux-3.2.22/arch/x86/include/asm/uaccess.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/uaccess.h	2012-07-11 20:20:37.027285117 +0200
@@ -7,12 +7,15 @@
 #include <linux/compiler.h>
 #include <linux/thread_info.h>
 #include <linux/string.h>
+#include <linux/sched.h>
 #include <asm/asm.h>
 #include <asm/page.h>
 
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1
 
+extern void check_object_size(const void *ptr, unsigned long n, bool to);
+
 /*
  * The fs value determines whether argument validity checking should be
  * performed or not.  If get_fs() == USER_DS, checking is performed, with
@@ -28,7 +31,12 @@
 
 #define get_ds()	(KERNEL_DS)
 #define get_fs()	(current_thread_info()->addr_limit)
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+void __set_fs(mm_segment_t x);
+void set_fs(mm_segment_t x);
+#else
 #define set_fs(x)	(current_thread_info()->addr_limit = (x))
+#endif
 
 #define segment_eq(a, b)	((a).seg == (b).seg)
 
@@ -76,7 +84,33 @@
  * checks that the pointer is in the user space range - after calling
  * this function, memory access functions may still return -EFAULT.
  */
-#define access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0))
+#define __access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0))
+#define access_ok(type, addr, size)					\
+({									\
+	long __size = size;						\
+	unsigned long __addr = (unsigned long)addr;			\
+	unsigned long __addr_ao = __addr & PAGE_MASK;			\
+	unsigned long __end_ao = __addr + __size - 1;			\
+	bool __ret_ao = __range_not_ok(__addr, __size) == 0;		\
+	if (__ret_ao && unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) {	\
+		while(__addr_ao <= __end_ao) {				\
+			char __c_ao;					\
+			__addr_ao += PAGE_SIZE;				\
+			if (__size > PAGE_SIZE)				\
+				cond_resched();				\
+			if (__get_user(__c_ao, (char __user *)__addr))	\
+				break;					\
+			if (type != VERIFY_WRITE) {			\
+				__addr = __addr_ao;			\
+				continue;				\
+			}						\
+			if (__put_user(__c_ao, (char __user *)__addr))	\
+				break;					\
+			__addr = __addr_ao;				\
+		}							\
+	}								\
+	__ret_ao;							\
+})
 
 /*
  * The exception table consists of pairs of addresses: the first is the
@@ -182,12 +216,20 @@ extern int __get_user_bad(void);
 	asm volatile("call __put_user_" #size : "=a" (__ret_pu)	\
 		     : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 
-
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg "gs;"
+#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n"
+#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n"
+#else
+#define __copyuser_seg
+#define __COPYUSER_SET_ES
+#define __COPYUSER_RESTORE_ES
+#endif
 
 #ifdef CONFIG_X86_32
 #define __put_user_asm_u64(x, addr, err, errret)			\
-	asm volatile("1:	movl %%eax,0(%2)\n"			\
-		     "2:	movl %%edx,4(%2)\n"			\
+	asm volatile("1:	"__copyuser_seg"movl %%eax,0(%2)\n"	\
+		     "2:	"__copyuser_seg"movl %%edx,4(%2)\n"	\
 		     "3:\n"						\
 		     ".section .fixup,\"ax\"\n"				\
 		     "4:	movl %3,%0\n"				\
@@ -199,8 +241,8 @@ extern int __get_user_bad(void);
 		     : "A" (x), "r" (addr), "i" (errret), "0" (err))
 
 #define __put_user_asm_ex_u64(x, addr)					\
-	asm volatile("1:	movl %%eax,0(%1)\n"			\
-		     "2:	movl %%edx,4(%1)\n"			\
+	asm volatile("1:	"__copyuser_seg"movl %%eax,0(%1)\n"	\
+		     "2:	"__copyuser_seg"movl %%edx,4(%1)\n"	\
 		     "3:\n"						\
 		     _ASM_EXTABLE(1b, 2b - 1b)				\
 		     _ASM_EXTABLE(2b, 3b - 2b)				\
@@ -252,7 +294,7 @@ extern void __put_user_8(void);
 	__typeof__(*(ptr)) __pu_val;				\
 	__chk_user_ptr(ptr);					\
 	might_fault();						\
-	__pu_val = x;						\
+	__pu_val = (x);						\
 	switch (sizeof(*(ptr))) {				\
 	case 1:							\
 		__put_user_x(1, __pu_val, ptr, __ret_pu);	\
@@ -373,7 +415,7 @@ do {									\
 } while (0)
 
 #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
-	asm volatile("1:	mov"itype" %2,%"rtype"1\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %2,%"rtype"1\n"\
 		     "2:\n"						\
 		     ".section .fixup,\"ax\"\n"				\
 		     "3:	mov %3,%0\n"				\
@@ -381,7 +423,7 @@ do {									\
 		     "	jmp 2b\n"					\
 		     ".previous\n"					\
 		     _ASM_EXTABLE(1b, 3b)				\
-		     : "=r" (err), ltype(x)				\
+		     : "=r" (err), ltype (x)				\
 		     : "m" (__m(addr)), "i" (errret), "0" (err))
 
 #define __get_user_size_ex(x, ptr, size)				\
@@ -406,7 +448,7 @@ do {									\
 } while (0)
 
 #define __get_user_asm_ex(x, addr, itype, rtype, ltype)			\
-	asm volatile("1:	mov"itype" %1,%"rtype"0\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %1,%"rtype"0\n"\
 		     "2:\n"						\
 		     _ASM_EXTABLE(1b, 2b - 1b)				\
 		     : ltype(x) : "m" (__m(addr)))
@@ -423,13 +465,24 @@ do {									\
 	int __gu_err;							\
 	unsigned long __gu_val;						\
 	__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT);	\
-	(x) = (__force __typeof__(*(ptr)))__gu_val;			\
+	(x) = (__typeof__(*(ptr)))__gu_val;				\
 	__gu_err;							\
 })
 
 /* FIXME: this hack is definitely wrong -AK */
 struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct __user *)(x))
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define ____m(x)					\
+({							\
+	unsigned long ____x = (unsigned long)(x);	\
+	if (____x < PAX_USER_SHADOW_BASE)		\
+		____x += PAX_USER_SHADOW_BASE;		\
+	(void __user *)____x;				\
+})
+#else
+#define ____m(x) (x)
+#endif
+#define __m(x) (*(struct __large_struct __user *)____m(x))
 
 /*
  * Tell gcc we read from memory instead of writing: this is because
@@ -437,7 +490,7 @@ struct __large_struct { unsigned long bu
  * aliasing issues.
  */
 #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
-	asm volatile("1:	mov"itype" %"rtype"1,%2\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %"rtype"1,%2\n"\
 		     "2:\n"						\
 		     ".section .fixup,\"ax\"\n"				\
 		     "3:	mov %3,%0\n"				\
@@ -445,10 +498,10 @@ struct __large_struct { unsigned long bu
 		     ".previous\n"					\
 		     _ASM_EXTABLE(1b, 3b)				\
 		     : "=r"(err)					\
-		     : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err))
+		     : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err))
 
 #define __put_user_asm_ex(x, addr, itype, rtype, ltype)			\
-	asm volatile("1:	mov"itype" %"rtype"0,%1\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %"rtype"0,%1\n"\
 		     "2:\n"						\
 		     _ASM_EXTABLE(1b, 2b - 1b)				\
 		     : : ltype(x), "m" (__m(addr)))
@@ -487,8 +540,12 @@ struct __large_struct { unsigned long bu
  * On error, the variable @x is set to zero.
  */
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __get_user(x, ptr)	get_user((x), (ptr))
+#else
 #define __get_user(x, ptr)						\
 	__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+#endif
 
 /**
  * __put_user: - Write a simple value into user space, with less checking.
@@ -510,8 +567,12 @@ struct __large_struct { unsigned long bu
  * Returns zero on success, or -EFAULT on error.
  */
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __put_user(x, ptr)	put_user((x), (ptr))
+#else
 #define __put_user(x, ptr)						\
 	__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
+#endif
 
 #define __get_user_unaligned __get_user
 #define __put_user_unaligned __put_user
@@ -529,7 +590,7 @@ struct __large_struct { unsigned long bu
 #define get_user_ex(x, ptr)	do {					\
 	unsigned long __gue_val;					\
 	__get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr))));	\
-	(x) = (__force __typeof__(*(ptr)))__gue_val;			\
+	(x) = (__typeof__(*(ptr)))__gue_val;				\
 } while (0)
 
 #ifdef CONFIG_X86_WP_WORKS_OK
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/unistd_64.h linux-3.2.22-g-v/arch/x86/include/asm/unistd_64.h
--- linux-3.2.22/arch/x86/include/asm/unistd_64.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/unistd_64.h	2012-07-11 20:20:45.337449722 +0200
@@ -535,7 +535,7 @@ __SYSCALL(__NR_tgkill, sys_tgkill)
 #define __NR_utimes				235
 __SYSCALL(__NR_utimes, sys_utimes)
 #define __NR_vserver				236
-__SYSCALL(__NR_vserver, sys_ni_syscall)
+__SYSCALL(__NR_vserver, sys_vserver)
 #define __NR_mbind				237
 __SYSCALL(__NR_mbind, sys_mbind)
 #define __NR_set_mempolicy			238
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/vdso.h linux-3.2.22-g-v/arch/x86/include/asm/vdso.h
--- linux-3.2.22/arch/x86/include/asm/vdso.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/vdso.h	2012-07-11 20:20:37.030640835 +0200
@@ -11,7 +11,7 @@ extern const char VDSO32_PRELINK[];
 #define VDSO32_SYMBOL(base, name)					\
 ({									\
 	extern const char VDSO32_##name[];				\
-	(void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
+	(void __user *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
 })
 #endif
 
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/x86_init.h linux-3.2.22-g-v/arch/x86/include/asm/x86_init.h
--- linux-3.2.22/arch/x86/include/asm/x86_init.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/x86_init.h	2012-07-11 20:20:37.030640835 +0200
@@ -28,7 +28,7 @@ struct x86_init_mpparse {
 	void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
 	void (*find_smp_config)(void);
 	void (*get_smp_config)(unsigned int early);
-};
+} __no_const;
 
 /**
  * struct x86_init_resources - platform specific resource related ops
@@ -42,7 +42,7 @@ struct x86_init_resources {
 	void (*probe_roms)(void);
 	void (*reserve_resources)(void);
 	char *(*memory_setup)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_irqs - platform specific interrupt setup
@@ -55,7 +55,7 @@ struct x86_init_irqs {
 	void (*pre_vector_init)(void);
 	void (*intr_init)(void);
 	void (*trap_init)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_oem - oem platform specific customizing functions
@@ -65,7 +65,7 @@ struct x86_init_irqs {
 struct x86_init_oem {
 	void (*arch_setup)(void);
 	void (*banner)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_mapping - platform specific initial kernel pagetable setup
@@ -76,7 +76,7 @@ struct x86_init_oem {
  */
 struct x86_init_mapping {
 	void (*pagetable_reserve)(u64 start, u64 end);
-};
+} __no_const;
 
 /**
  * struct x86_init_paging - platform specific paging functions
@@ -86,7 +86,7 @@ struct x86_init_mapping {
 struct x86_init_paging {
 	void (*pagetable_setup_start)(pgd_t *base);
 	void (*pagetable_setup_done)(pgd_t *base);
-};
+} __no_const;
 
 /**
  * struct x86_init_timers - platform specific timer setup
@@ -101,7 +101,7 @@ struct x86_init_timers {
 	void (*tsc_pre_init)(void);
 	void (*timer_init)(void);
 	void (*wallclock_init)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_iommu - platform specific iommu setup
@@ -109,7 +109,7 @@ struct x86_init_timers {
  */
 struct x86_init_iommu {
 	int (*iommu_init)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_pci - platform specific pci init functions
@@ -123,7 +123,7 @@ struct x86_init_pci {
 	int (*init)(void);
 	void (*init_irq)(void);
 	void (*fixup_irqs)(void);
-};
+} __no_const;
 
 /**
  * struct x86_init_ops - functions for platform specific setup
@@ -139,7 +139,7 @@ struct x86_init_ops {
 	struct x86_init_timers		timers;
 	struct x86_init_iommu		iommu;
 	struct x86_init_pci		pci;
-};
+} __no_const;
 
 /**
  * struct x86_cpuinit_ops - platform specific cpu hotplug setups
@@ -147,7 +147,7 @@ struct x86_init_ops {
  */
 struct x86_cpuinit_ops {
 	void (*setup_percpu_clockev)(void);
-};
+} __no_const;
 
 /**
  * struct x86_platform_ops - platform specific runtime functions
@@ -169,7 +169,7 @@ struct x86_platform_ops {
 	void (*nmi_init)(void);
 	unsigned char (*get_nmi_reason)(void);
 	int (*i8042_detect)(void);
-};
+} __no_const;
 
 struct pci_dev;
 
@@ -177,7 +177,7 @@ struct x86_msi_ops {
 	int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
 	void (*teardown_msi_irq)(unsigned int irq);
 	void (*teardown_msi_irqs)(struct pci_dev *dev);
-};
+} __no_const;
 
 extern struct x86_init_ops x86_init;
 extern struct x86_cpuinit_ops x86_cpuinit;
diff -NurpP --minimal linux-3.2.22/arch/x86/include/asm/xsave.h linux-3.2.22-g-v/arch/x86/include/asm/xsave.h
--- linux-3.2.22/arch/x86/include/asm/xsave.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/include/asm/xsave.h	2012-07-11 20:20:37.030640835 +0200
@@ -65,6 +65,11 @@ static inline int xsave_user(struct xsav
 {
 	int err;
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if ((unsigned long)buf < PAX_USER_SHADOW_BASE)
+		buf = (struct xsave_struct __user *)((void __user*)buf + PAX_USER_SHADOW_BASE);
+#endif
+
 	/*
 	 * Clear the xsave header first, so that reserved fields are
 	 * initialized to zero.
@@ -96,10 +101,15 @@ static inline int xsave_user(struct xsav
 static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask)
 {
 	int err;
-	struct xsave_struct *xstate = ((__force struct xsave_struct *)buf);
+	struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)buf);
 	u32 lmask = mask;
 	u32 hmask = mask >> 32;
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if ((unsigned long)xstate < PAX_USER_SHADOW_BASE)
+		xstate = (struct xsave_struct *)((void *)xstate + PAX_USER_SHADOW_BASE);
+#endif
+
 	__asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n"
 			     "2:\n"
 			     ".section .fixup,\"ax\"\n"
diff -NurpP --minimal linux-3.2.22/arch/x86/Kconfig linux-3.2.22-g-v/arch/x86/Kconfig
--- linux-3.2.22/arch/x86/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/Kconfig	2012-07-11 20:20:45.337449722 +0200
@@ -235,7 +235,7 @@ config X86_HT
 
 config X86_32_LAZY_GS
 	def_bool y
-	depends on X86_32 && !CC_STACKPROTECTOR
+	depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF
 
 config ARCH_HWEIGHT_CFLAGS
 	string
@@ -1022,7 +1022,7 @@ choice
 
 config NOHIGHMEM
 	bool "off"
-	depends on !X86_NUMAQ
+	depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
 	---help---
 	  Linux can use up to 64 Gigabytes of physical memory on x86 systems.
 	  However, the address space of 32-bit x86 processors is only 4
@@ -1059,7 +1059,7 @@ config NOHIGHMEM
 
 config HIGHMEM4G
 	bool "4GB"
-	depends on !X86_NUMAQ
+	depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
 	---help---
 	  Select this if you have a 32-bit processor and between 1 and 4
 	  gigabytes of physical RAM.
@@ -1113,7 +1113,7 @@ config PAGE_OFFSET
 	hex
 	default 0xB0000000 if VMSPLIT_3G_OPT
 	default 0x80000000 if VMSPLIT_2G
-	default 0x78000000 if VMSPLIT_2G_OPT
+	default 0x70000000 if VMSPLIT_2G_OPT
 	default 0x40000000 if VMSPLIT_1G
 	default 0xC0000000
 	depends on X86_32
@@ -1496,6 +1496,7 @@ config SECCOMP
 
 config CC_STACKPROTECTOR
 	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
+	depends on X86_64 || !PAX_MEMORY_UDEREF
 	---help---
 	  This option turns on the -fstack-protector GCC feature. This
 	  feature puts, at the beginning of functions, a canary value on
@@ -1553,6 +1554,7 @@ config KEXEC_JUMP
 config PHYSICAL_START
 	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 	default "0x1000000"
+	range 0x400000 0x40000000
 	---help---
 	  This gives the physical address where the kernel is loaded.
 
@@ -1616,6 +1618,7 @@ config X86_NEED_RELOCS
 config PHYSICAL_ALIGN
 	hex "Alignment value to which kernel should be aligned" if X86_32
 	default "0x1000000"
+	range 0x400000 0x1000000 if PAX_KERNEXEC
 	range 0x2000 0x1000000
 	---help---
 	  This value puts the alignment restrictions on physical address
@@ -1647,9 +1650,10 @@ config HOTPLUG_CPU
 	  Say N if you want to disable CPU hotplug.
 
 config COMPAT_VDSO
-	def_bool y
+	def_bool n
 	prompt "Compat VDSO support"
 	depends on X86_32 || IA32_EMULATION
+	depends on !PAX_NOEXEC && !PAX_MEMORY_UDEREF
 	---help---
 	  Map the 32-bit VDSO to the predictable old-style address too.
 
@@ -2170,6 +2174,8 @@ source "fs/Kconfig"
 
 source "arch/x86/Kconfig.debug"
 
+source "kernel/vserver/Kconfig"
+
 source "security/Kconfig"
 
 source "crypto/Kconfig"
diff -NurpP --minimal linux-3.2.22/arch/x86/Kconfig.cpu linux-3.2.22-g-v/arch/x86/Kconfig.cpu
--- linux-3.2.22/arch/x86/Kconfig.cpu	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/Kconfig.cpu	2012-07-11 20:20:36.977450815 +0200
@@ -341,7 +341,7 @@ config X86_PPRO_FENCE
 
 config X86_F00F_BUG
 	def_bool y
-	depends on M586MMX || M586TSC || M586 || M486 || M386
+	depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC
 
 config X86_INVD_BUG
 	def_bool y
@@ -365,7 +365,7 @@ config X86_POPAD_OK
 
 config X86_ALIGNMENT_16
 	def_bool y
-	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
+	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
 
 config X86_INTEL_USERCOPY
 	def_bool y
@@ -411,7 +411,7 @@ config X86_CMPXCHG64
 # generates cmov.
 config X86_CMOV
 	def_bool y
-	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
+	depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
 
 config X86_MINIMUM_CPU_FAMILY
 	int
diff -NurpP --minimal linux-3.2.22/arch/x86/Kconfig.debug linux-3.2.22-g-v/arch/x86/Kconfig.debug
--- linux-3.2.22/arch/x86/Kconfig.debug	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/Kconfig.debug	2012-07-11 20:20:36.977450815 +0200
@@ -81,7 +81,7 @@ config X86_PTDUMP
 config DEBUG_RODATA
 	bool "Write protect kernel read-only data structures"
 	default y
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL && BROKEN
 	---help---
 	  Mark the kernel read-only data as write-protected in the pagetables,
 	  in order to catch accidental (and incorrect) writes to such const
@@ -99,7 +99,7 @@ config DEBUG_RODATA_TEST
 
 config DEBUG_SET_MODULE_RONX
 	bool "Set loadable kernel module data as NX and text as RO"
-	depends on MODULES
+	depends on MODULES && BROKEN
 	---help---
 	  This option helps catch unintended modifications to loadable
 	  kernel module's text and read-only data. It also prevents execution
@@ -272,7 +272,7 @@ config OPTIMIZE_INLINING
 
 config DEBUG_STRICT_USER_COPY_CHECKS
 	bool "Strict copy size checks"
-	depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING
+	depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING && !PAX_SIZE_OVERFLOW
 	---help---
 	  Enabling this option turns a certain set of sanity checks for user
 	  copy operations into compile time failures.
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/acpi/realmode/Makefile linux-3.2.22-g-v/arch/x86/kernel/acpi/realmode/Makefile
--- linux-3.2.22/arch/x86/kernel/acpi/realmode/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/acpi/realmode/Makefile	2012-07-11 20:20:37.030640835 +0200
@@ -41,6 +41,9 @@ KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os 
 		   $(call cc-option, -fno-stack-protector) \
 		   $(call cc-option, -mpreferred-stack-boundary=2)
 KBUILD_CFLAGS	+= $(call cc-option, -m32)
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS	+= $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify
+endif
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/acpi/realmode/wakeup.S linux-3.2.22-g-v/arch/x86/kernel/acpi/realmode/wakeup.S
--- linux-3.2.22/arch/x86/kernel/acpi/realmode/wakeup.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/acpi/realmode/wakeup.S	2012-07-11 20:20:37.030640835 +0200
@@ -108,6 +108,9 @@ wakeup_code:
 	/* Do any other stuff... */
 
 #ifndef CONFIG_64BIT
+	/* Recheck NX bit overrides (64bit path does this in trampoline */
+	call	verify_cpu
+
 	/* This could also be done in C code... */
 	movl	pmode_cr3, %eax
 	movl	%eax, %cr3
@@ -131,6 +134,7 @@ wakeup_code:
 	movl	pmode_cr0, %eax
 	movl	%eax, %cr0
 	jmp	pmode_return
+# include "../../verify_cpu.S"
 #else
 	pushw	$0
 	pushw	trampoline_segment
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/acpi/sleep.c linux-3.2.22-g-v/arch/x86/kernel/acpi/sleep.c
--- linux-3.2.22/arch/x86/kernel/acpi/sleep.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/acpi/sleep.c	2012-07-11 20:20:37.030640835 +0200
@@ -94,8 +94,12 @@ int acpi_suspend_lowlevel(void)
 	header->trampoline_segment = trampoline_address() >> 4;
 #ifdef CONFIG_SMP
 	stack_start = (unsigned long)temp_stack + sizeof(temp_stack);
+
+	pax_open_kernel();
 	early_gdt_descr.address =
 			(unsigned long)get_cpu_gdt_table(smp_processor_id());
+	pax_close_kernel();
+
 	initial_gs = per_cpu_offset(smp_processor_id());
 #endif
 	initial_code = (unsigned long)wakeup_long64;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/acpi/wakeup_32.S linux-3.2.22-g-v/arch/x86/kernel/acpi/wakeup_32.S
--- linux-3.2.22/arch/x86/kernel/acpi/wakeup_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/acpi/wakeup_32.S	2012-07-11 20:20:37.033972772 +0200
@@ -30,13 +30,11 @@ wakeup_pmode_return:
 	# and restore the stack ... but you need gdt for this to work
 	movl	saved_context_esp, %esp
 
-	movl	%cs:saved_magic, %eax
-	cmpl	$0x12345678, %eax
+	cmpl	$0x12345678, saved_magic
 	jne	bogus_magic
 
 	# jump to place where we left off
-	movl	saved_eip, %eax
-	jmp	*%eax
+	jmp	*(saved_eip)
 
 bogus_magic:
 	jmp	bogus_magic
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/alternative.c linux-3.2.22-g-v/arch/x86/kernel/alternative.c
--- linux-3.2.22/arch/x86/kernel/alternative.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/alternative.c	2012-07-11 20:20:37.033972772 +0200
@@ -276,6 +276,13 @@ void __init_or_module apply_alternatives
 	 */
 	for (a = start; a < end; a++) {
 		instr = (u8 *)&a->instr_offset + a->instr_offset;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		instr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (instr < (u8 *)_text || (u8 *)_einittext <= instr)
+			instr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		replacement = (u8 *)&a->repl_offset + a->repl_offset;
 		BUG_ON(a->replacementlen > a->instrlen);
 		BUG_ON(a->instrlen > sizeof(insnbuf));
@@ -307,10 +314,16 @@ static void alternatives_smp_lock(const 
 	for (poff = start; poff < end; poff++) {
 		u8 *ptr = (u8 *)poff + *poff;
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
+			ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		if (!*poff || ptr < text || ptr >= text_end)
 			continue;
 		/* turn DS segment override prefix into lock prefix */
-		if (*ptr == 0x3e)
+		if (*ktla_ktva(ptr) == 0x3e)
 			text_poke(ptr, ((unsigned char []){0xf0}), 1);
 	};
 	mutex_unlock(&text_mutex);
@@ -328,10 +341,16 @@ static void alternatives_smp_unlock(cons
 	for (poff = start; poff < end; poff++) {
 		u8 *ptr = (u8 *)poff + *poff;
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
+			ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		if (!*poff || ptr < text || ptr >= text_end)
 			continue;
 		/* turn lock prefix into DS segment override prefix */
-		if (*ptr == 0xf0)
+		if (*ktla_ktva(ptr) == 0xf0)
 			text_poke(ptr, ((unsigned char []){0x3E}), 1);
 	};
 	mutex_unlock(&text_mutex);
@@ -500,7 +519,7 @@ void __init_or_module apply_paravirt(str
 
 		BUG_ON(p->len > MAX_PATCH_LEN);
 		/* prep the buffer with the original instructions */
-		memcpy(insnbuf, p->instr, p->len);
+		memcpy(insnbuf, ktla_ktva(p->instr), p->len);
 		used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf,
 					 (unsigned long)p->instr, p->len);
 
@@ -568,7 +587,7 @@ void __init alternative_instructions(voi
 	if (smp_alt_once)
 		free_init_pages("SMP alternatives",
 				(unsigned long)__smp_locks,
-				(unsigned long)__smp_locks_end);
+				PAGE_ALIGN((unsigned long)__smp_locks_end));
 
 	restart_nmi();
 }
@@ -585,13 +604,17 @@ void __init alternative_instructions(voi
  * instructions. And on the local CPU you need to be protected again NMI or MCE
  * handlers seeing an inconsistent instruction while you patch.
  */
-void *__init_or_module text_poke_early(void *addr, const void *opcode,
+void *__kprobes text_poke_early(void *addr, const void *opcode,
 					      size_t len)
 {
 	unsigned long flags;
 	local_irq_save(flags);
-	memcpy(addr, opcode, len);
+
+	pax_open_kernel();
+	memcpy(ktla_ktva(addr), opcode, len);
 	sync_core();
+	pax_close_kernel();
+
 	local_irq_restore(flags);
 	/* Could also do a CLFLUSH here to speed up CPU recovery; but
 	   that causes hangs on some VIA CPUs. */
@@ -613,36 +636,22 @@ void *__init_or_module text_poke_early(v
  */
 void *__kprobes text_poke(void *addr, const void *opcode, size_t len)
 {
-	unsigned long flags;
-	char *vaddr;
+	unsigned char *vaddr = ktla_ktva(addr);
 	struct page *pages[2];
-	int i;
+	size_t i;
 
 	if (!core_kernel_text((unsigned long)addr)) {
-		pages[0] = vmalloc_to_page(addr);
-		pages[1] = vmalloc_to_page(addr + PAGE_SIZE);
+		pages[0] = vmalloc_to_page(vaddr);
+		pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE);
 	} else {
-		pages[0] = virt_to_page(addr);
+		pages[0] = virt_to_page(vaddr);
 		WARN_ON(!PageReserved(pages[0]));
-		pages[1] = virt_to_page(addr + PAGE_SIZE);
+		pages[1] = virt_to_page(vaddr + PAGE_SIZE);
 	}
 	BUG_ON(!pages[0]);
-	local_irq_save(flags);
-	set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0]));
-	if (pages[1])
-		set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1]));
-	vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0);
-	memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len);
-	clear_fixmap(FIX_TEXT_POKE0);
-	if (pages[1])
-		clear_fixmap(FIX_TEXT_POKE1);
-	local_flush_tlb();
-	sync_core();
-	/* Could also do a CLFLUSH here to speed up CPU recovery; but
-	   that causes hangs on some VIA CPUs. */
+	text_poke_early(addr, opcode, len);
 	for (i = 0; i < len; i++)
-		BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]);
-	local_irq_restore(flags);
+		BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]);
 	return addr;
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/apic/apic.c linux-3.2.22-g-v/arch/x86/kernel/apic/apic.c
--- linux-3.2.22/arch/x86/kernel/apic/apic.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/apic/apic.c	2012-07-11 20:20:37.033972772 +0200
@@ -174,7 +174,7 @@ int first_system_vector = 0xfe;
 /*
  * Debug level, exported for io_apic.c
  */
-unsigned int apic_verbosity;
+int apic_verbosity;
 
 int pic_mode;
 
@@ -1857,7 +1857,7 @@ void smp_error_interrupt(struct pt_regs 
 	apic_write(APIC_ESR, 0);
 	v1 = apic_read(APIC_ESR);
 	ack_APIC_irq();
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 
 	apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x(%02x)",
 		    smp_processor_id(), v0 , v1);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/apic/io_apic.c linux-3.2.22-g-v/arch/x86/kernel/apic/io_apic.c
--- linux-3.2.22/arch/x86/kernel/apic/io_apic.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/apic/io_apic.c	2012-07-11 20:20:37.037311537 +0200
@@ -1096,7 +1096,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, 
 }
 EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
 
-void lock_vector_lock(void)
+void lock_vector_lock(void) __acquires(vector_lock)
 {
 	/* Used to the online set of cpus does not change
 	 * during assign_irq_vector.
@@ -1104,7 +1104,7 @@ void lock_vector_lock(void)
 	raw_spin_lock(&vector_lock);
 }
 
-void unlock_vector_lock(void)
+void unlock_vector_lock(void) __releases(vector_lock)
 {
 	raw_spin_unlock(&vector_lock);
 }
@@ -2510,7 +2510,7 @@ static void ack_apic_edge(struct irq_dat
 	ack_APIC_irq();
 }
 
-atomic_t irq_mis_count;
+atomic_unchecked_t irq_mis_count;
 
 static void ack_apic_level(struct irq_data *data)
 {
@@ -2576,7 +2576,7 @@ static void ack_apic_level(struct irq_da
 	 * at the cpu.
 	 */
 	if (!(v & (1 << (i & 0x1f)))) {
-		atomic_inc(&irq_mis_count);
+		atomic_inc_unchecked(&irq_mis_count);
 
 		eoi_ioapic_irq(irq, cfg);
 	}
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/apm_32.c linux-3.2.22-g-v/arch/x86/kernel/apm_32.c
--- linux-3.2.22/arch/x86/kernel/apm_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/apm_32.c	2012-07-11 20:20:37.037311537 +0200
@@ -411,7 +411,7 @@ static DEFINE_MUTEX(apm_mutex);
  * This is for buggy BIOS's that refer to (real mode) segment 0x40
  * even though they are called in protected mode.
  */
-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
 			(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
 
 static const char driver_version[] = "1.16ac";	/* no spaces */
@@ -589,7 +589,10 @@ static long __apm_bios_call(void *_call)
 	BUG_ON(cpu != 0);
 	gdt = get_cpu_gdt_table(cpu);
 	save_desc_40 = gdt[0x40 / 8];
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = bad_bios_desc;
+	pax_close_kernel();
 
 	apm_irq_save(flags);
 	APM_DO_SAVE_SEGS;
@@ -598,7 +601,11 @@ static long __apm_bios_call(void *_call)
 			  &call->esi);
 	APM_DO_RESTORE_SEGS;
 	apm_irq_restore(flags);
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = save_desc_40;
+	pax_close_kernel();
+
 	put_cpu();
 
 	return call->eax & 0xff;
@@ -665,7 +672,10 @@ static long __apm_bios_call_simple(void 
 	BUG_ON(cpu != 0);
 	gdt = get_cpu_gdt_table(cpu);
 	save_desc_40 = gdt[0x40 / 8];
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = bad_bios_desc;
+	pax_close_kernel();
 
 	apm_irq_save(flags);
 	APM_DO_SAVE_SEGS;
@@ -673,7 +683,11 @@ static long __apm_bios_call_simple(void 
 					 &call->eax);
 	APM_DO_RESTORE_SEGS;
 	apm_irq_restore(flags);
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = save_desc_40;
+	pax_close_kernel();
+
 	put_cpu();
 	return error;
 }
@@ -2347,12 +2361,15 @@ static int __init apm_init(void)
 	 * code to that CPU.
 	 */
 	gdt = get_cpu_gdt_table(0);
+
+	pax_open_kernel();
 	set_desc_base(&gdt[APM_CS >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4));
 	set_desc_base(&gdt[APM_CS_16 >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4));
 	set_desc_base(&gdt[APM_DS >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4));
+	pax_close_kernel();
 
 	proc_create("apm", 0, NULL, &apm_file_ops);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/asm-offsets_64.c linux-3.2.22-g-v/arch/x86/kernel/asm-offsets_64.c
--- linux-3.2.22/arch/x86/kernel/asm-offsets_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/asm-offsets_64.c	2012-07-11 20:20:37.040642656 +0200
@@ -69,6 +69,7 @@ int main(void)
 	BLANK();
 #undef ENTRY
 
+	DEFINE(TSS_size, sizeof(struct tss_struct));
 	OFFSET(TSS_ist, tss_struct, x86_tss.ist);
 	BLANK();
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/asm-offsets.c linux-3.2.22-g-v/arch/x86/kernel/asm-offsets.c
--- linux-3.2.22/arch/x86/kernel/asm-offsets.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/asm-offsets.c	2012-07-11 20:20:37.040642656 +0200
@@ -33,6 +33,8 @@ void common(void) {
 	OFFSET(TI_status, thread_info, status);
 	OFFSET(TI_addr_limit, thread_info, addr_limit);
 	OFFSET(TI_preempt_count, thread_info, preempt_count);
+	OFFSET(TI_lowest_stack, thread_info, lowest_stack);
+	DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo));
 
 	BLANK();
 	OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
@@ -53,8 +55,26 @@ void common(void) {
 	OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit);
 	OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
 	OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2);
+
+#ifdef CONFIG_PAX_KERNEXEC
+	OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0);
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3);
+	OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3);
+#ifdef CONFIG_X86_64
+	OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched);
+#endif
+#endif
+
 #endif
 
+	BLANK();
+	DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
+	DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
+	DEFINE(THREAD_SIZE_asm, THREAD_SIZE);
+
 #ifdef CONFIG_XEN
 	BLANK();
 	OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/amd.c linux-3.2.22-g-v/arch/x86/kernel/cpu/amd.c
--- linux-3.2.22/arch/x86/kernel/cpu/amd.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/amd.c	2012-07-11 20:20:37.040642656 +0200
@@ -682,7 +682,7 @@ static unsigned int __cpuinit amd_size_c
 							unsigned int size)
 {
 	/* AMD errata T13 (order #21922) */
-	if ((c->x86 == 6)) {
+	if (c->x86 == 6) {
 		/* Duron Rev A0 */
 		if (c->x86_model == 3 && c->x86_mask == 0)
 			size = 64;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/common.c linux-3.2.22-g-v/arch/x86/kernel/cpu/common.c
--- linux-3.2.22/arch/x86/kernel/cpu/common.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/common.c	2012-07-11 20:20:37.040642656 +0200
@@ -84,60 +84,6 @@ static const struct cpu_dev __cpuinitcon
 
 static const struct cpu_dev *this_cpu __cpuinitdata = &default_cpu;
 
-DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = {
-#ifdef CONFIG_X86_64
-	/*
-	 * We need valid kernel segments for data and code in long mode too
-	 * IRET will check the segment types  kkeil 2000/10/28
-	 * Also sysret mandates a special GDT layout
-	 *
-	 * TLS descriptors are currently at a different place compared to i386.
-	 * Hopefully nobody expects them at a fixed place (Wine?)
-	 */
-	[GDT_ENTRY_KERNEL32_CS]		= GDT_ENTRY_INIT(0xc09b, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xa09b, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc093, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER32_CS]	= GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff),
-#else
-	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xc09a, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff),
-	/*
-	 * Segments used for calling PnP BIOS have byte granularity.
-	 * They code segments and data segments have fixed 64k limits,
-	 * the transfer segment sizes are set at run time.
-	 */
-	/* 32-bit code */
-	[GDT_ENTRY_PNPBIOS_CS32]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
-	/* 16-bit code */
-	[GDT_ENTRY_PNPBIOS_CS16]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_DS]		= GDT_ENTRY_INIT(0x0092, 0, 0xffff),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS1]		= GDT_ENTRY_INIT(0x0092, 0, 0),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS2]		= GDT_ENTRY_INIT(0x0092, 0, 0),
-	/*
-	 * The APM segments have byte granularity and their bases
-	 * are set at run time.  All have 64k limits.
-	 */
-	/* 32-bit code */
-	[GDT_ENTRY_APMBIOS_BASE]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
-	/* 16-bit code */
-	[GDT_ENTRY_APMBIOS_BASE+1]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
-	/* data */
-	[GDT_ENTRY_APMBIOS_BASE+2]	= GDT_ENTRY_INIT(0x4092, 0, 0xffff),
-
-	[GDT_ENTRY_ESPFIX_SS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	[GDT_ENTRY_PERCPU]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	GDT_STACK_CANARY_INIT
-#endif
-} };
-EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
-
 static int __init x86_xsave_setup(char *s)
 {
 	setup_clear_cpu_cap(X86_FEATURE_XSAVE);
@@ -372,7 +318,7 @@ void switch_to_new_gdt(int cpu)
 {
 	struct desc_ptr gdt_descr;
 
-	gdt_descr.address = (long)get_cpu_gdt_table(cpu);
+	gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
 	/* Reload the per-cpu base */
@@ -844,6 +790,10 @@ static void __cpuinit identify_cpu(struc
 	/* Filter out anything that depends on CPUID levels we don't have */
 	filter_cpuid_features(c, true);
 
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
+	setup_clear_cpu_cap(X86_FEATURE_SEP);
+#endif
+
 	/* If the model name is still unset, do table lookup. */
 	if (!c->x86_model_id[0]) {
 		const char *p;
@@ -1024,6 +974,9 @@ static __init int setup_disablecpuid(cha
 }
 __setup("clearcpuid=", setup_disablecpuid);
 
+DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo;
+EXPORT_PER_CPU_SYMBOL(current_tinfo);
+
 #ifdef CONFIG_X86_64
 struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
 
@@ -1039,7 +992,7 @@ DEFINE_PER_CPU(struct task_struct *, cur
 EXPORT_PER_CPU_SYMBOL(current_task);
 
 DEFINE_PER_CPU(unsigned long, kernel_stack) =
-	(unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE;
+	(unsigned long)&init_thread_union - 16 + THREAD_SIZE;
 EXPORT_PER_CPU_SYMBOL(kernel_stack);
 
 DEFINE_PER_CPU(char *, irq_stack_ptr) =
@@ -1104,7 +1057,7 @@ struct pt_regs * __cpuinit idle_regs(str
 {
 	memset(regs, 0, sizeof(struct pt_regs));
 	regs->fs = __KERNEL_PERCPU;
-	regs->gs = __KERNEL_STACK_CANARY;
+	savesegment(gs, regs->gs);
 
 	return regs;
 }
@@ -1159,7 +1112,7 @@ void __cpuinit cpu_init(void)
 	int i;
 
 	cpu = stack_smp_processor_id();
-	t = &per_cpu(init_tss, cpu);
+	t = init_tss + cpu;
 	oist = &per_cpu(orig_ist, cpu);
 
 #ifdef CONFIG_NUMA
@@ -1185,7 +1138,7 @@ void __cpuinit cpu_init(void)
 	switch_to_new_gdt(cpu);
 	loadsegment(fs, 0);
 
-	load_idt((const struct desc_ptr *)&idt_descr);
+	load_idt(&idt_descr);
 
 	memset(me->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8);
 	syscall_init();
@@ -1194,7 +1147,6 @@ void __cpuinit cpu_init(void)
 	wrmsrl(MSR_KERNEL_GS_BASE, 0);
 	barrier();
 
-	x86_configure_nx();
 	if (cpu != 0)
 		enable_x2apic();
 
@@ -1248,7 +1200,7 @@ void __cpuinit cpu_init(void)
 {
 	int cpu = smp_processor_id();
 	struct task_struct *curr = current;
-	struct tss_struct *t = &per_cpu(init_tss, cpu);
+	struct tss_struct *t = init_tss + cpu;
 	struct thread_struct *thread = &curr->thread;
 
 	if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) {
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/intel.c linux-3.2.22-g-v/arch/x86/kernel/cpu/intel.c
--- linux-3.2.22/arch/x86/kernel/cpu/intel.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/intel.c	2012-07-11 20:20:37.043975545 +0200
@@ -174,7 +174,7 @@ static void __cpuinit trap_init_f00f_bug
 	 * Update the IDT descriptor and reload the IDT so that
 	 * it uses the read-only mapped virtual address.
 	 */
-	idt_descr.address = fix_to_virt(FIX_F00F_IDT);
+	idt_descr.address = (struct desc_struct *)fix_to_virt(FIX_F00F_IDT);
 	load_idt(&idt_descr);
 }
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/Makefile linux-3.2.22-g-v/arch/x86/kernel/cpu/Makefile
--- linux-3.2.22/arch/x86/kernel/cpu/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/Makefile	2012-07-11 20:20:37.040642656 +0200
@@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg
 CFLAGS_REMOVE_perf_event.o = -pg
 endif
 
-# Make sure load_percpu_segment has no stackprotector
-nostackp := $(call cc-option, -fno-stack-protector)
-CFLAGS_common.o		:= $(nostackp)
-
 obj-y			:= intel_cacheinfo.o scattered.o topology.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
 obj-y			+= vmware.o hypervisor.o sched.o mshyperv.o
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/mcheck/mce.c linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/mce.c
--- linux-3.2.22/arch/x86/kernel/cpu/mcheck/mce.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/mce.c	2012-07-11 20:20:37.043975545 +0200
@@ -42,6 +42,7 @@
 #include <asm/processor.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/local.h>
 
 #include "mce-internal.h"
 
@@ -202,7 +203,7 @@ static void print_mce(struct mce *m)
 			!(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "",
 				m->cs, m->ip);
 
-		if (m->cs == __KERNEL_CS)
+		if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS)
 			print_symbol("{%s}", m->ip);
 		pr_cont("\n");
 	}
@@ -235,10 +236,10 @@ static void print_mce(struct mce *m)
 
 #define PANIC_TIMEOUT 5 /* 5 seconds */
 
-static atomic_t mce_paniced;
+static atomic_unchecked_t mce_paniced;
 
 static int fake_panic;
-static atomic_t mce_fake_paniced;
+static atomic_unchecked_t mce_fake_paniced;
 
 /* Panic in progress. Enable interrupts and wait for final IPI */
 static void wait_for_panic(void)
@@ -262,7 +263,7 @@ static void mce_panic(char *msg, struct 
 		/*
 		 * Make sure only one CPU runs in machine check panic
 		 */
-		if (atomic_inc_return(&mce_paniced) > 1)
+		if (atomic_inc_return_unchecked(&mce_paniced) > 1)
 			wait_for_panic();
 		barrier();
 
@@ -270,7 +271,7 @@ static void mce_panic(char *msg, struct 
 		console_verbose();
 	} else {
 		/* Don't log too much for fake panic */
-		if (atomic_inc_return(&mce_fake_paniced) > 1)
+		if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1)
 			return;
 	}
 	/* First print corrected ones that are still unlogged */
@@ -618,7 +619,7 @@ static int mce_timed_out(u64 *t)
 	 * might have been modified by someone else.
 	 */
 	rmb();
-	if (atomic_read(&mce_paniced))
+	if (atomic_read_unchecked(&mce_paniced))
 		wait_for_panic();
 	if (!monarch_timeout)
 		goto out;
@@ -1406,7 +1407,7 @@ static void unexpected_machine_check(str
 }
 
 /* Call the installed machine check handler for this CPU setup. */
-void (*machine_check_vector)(struct pt_regs *, long error_code) =
+void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only =
 						unexpected_machine_check;
 
 /*
@@ -1429,7 +1430,9 @@ void __cpuinit mcheck_cpu_init(struct cp
 		return;
 	}
 
+	pax_open_kernel();
 	machine_check_vector = do_machine_check;
+	pax_close_kernel();
 
 	__mcheck_cpu_init_generic();
 	__mcheck_cpu_init_vendor(c);
@@ -1443,7 +1446,7 @@ void __cpuinit mcheck_cpu_init(struct cp
  */
 
 static DEFINE_SPINLOCK(mce_chrdev_state_lock);
-static int mce_chrdev_open_count;	/* #times opened */
+static local_t mce_chrdev_open_count;	/* #times opened */
 static int mce_chrdev_open_exclu;	/* already open exclusive? */
 
 static int mce_chrdev_open(struct inode *inode, struct file *file)
@@ -1451,7 +1454,7 @@ static int mce_chrdev_open(struct inode 
 	spin_lock(&mce_chrdev_state_lock);
 
 	if (mce_chrdev_open_exclu ||
-	    (mce_chrdev_open_count && (file->f_flags & O_EXCL))) {
+	    (local_read(&mce_chrdev_open_count) && (file->f_flags & O_EXCL))) {
 		spin_unlock(&mce_chrdev_state_lock);
 
 		return -EBUSY;
@@ -1459,7 +1462,7 @@ static int mce_chrdev_open(struct inode 
 
 	if (file->f_flags & O_EXCL)
 		mce_chrdev_open_exclu = 1;
-	mce_chrdev_open_count++;
+	local_inc(&mce_chrdev_open_count);
 
 	spin_unlock(&mce_chrdev_state_lock);
 
@@ -1470,7 +1473,7 @@ static int mce_chrdev_release(struct ino
 {
 	spin_lock(&mce_chrdev_state_lock);
 
-	mce_chrdev_open_count--;
+	local_dec(&mce_chrdev_open_count);
 	mce_chrdev_open_exclu = 0;
 
 	spin_unlock(&mce_chrdev_state_lock);
@@ -2179,7 +2182,7 @@ struct dentry *mce_get_debugfs_dir(void)
 static void mce_reset(void)
 {
 	cpu_missing = 0;
-	atomic_set(&mce_fake_paniced, 0);
+	atomic_set_unchecked(&mce_fake_paniced, 0);
 	atomic_set(&mce_executing, 0);
 	atomic_set(&mce_callin, 0);
 	atomic_set(&global_nwo, 0);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/mcheck/p5.c linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/p5.c
--- linux-3.2.22/arch/x86/kernel/cpu/mcheck/p5.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/p5.c	2012-07-11 20:20:37.043975545 +0200
@@ -12,6 +12,7 @@
 #include <asm/system.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/pgtable.h>
 
 /* By default disabled */
 int mce_p5_enabled __read_mostly;
@@ -50,7 +51,9 @@ void intel_p5_mcheck_init(struct cpuinfo
 	if (!cpu_has(c, X86_FEATURE_MCE))
 		return;
 
+	pax_open_kernel();
 	machine_check_vector = pentium_machine_check;
+	pax_close_kernel();
 	/* Make sure the vector pointer is visible before we enable MCEs: */
 	wmb();
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/mcheck/winchip.c linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/winchip.c
--- linux-3.2.22/arch/x86/kernel/cpu/mcheck/winchip.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/mcheck/winchip.c	2012-07-11 20:20:37.043975545 +0200
@@ -11,6 +11,7 @@
 #include <asm/system.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/pgtable.h>
 
 /* Machine check handler for WinChip C6: */
 static void winchip_machine_check(struct pt_regs *regs, long error_code)
@@ -24,7 +25,9 @@ void winchip_mcheck_init(struct cpuinfo_
 {
 	u32 lo, hi;
 
+	pax_open_kernel();
 	machine_check_vector = winchip_machine_check;
+	pax_close_kernel();
 	/* Make sure the vector pointer is visible before we enable MCEs: */
 	wmb();
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/mtrr/main.c linux-3.2.22-g-v/arch/x86/kernel/cpu/mtrr/main.c
--- linux-3.2.22/arch/x86/kernel/cpu/mtrr/main.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/mtrr/main.c	2012-07-11 20:20:37.047310894 +0200
@@ -62,7 +62,7 @@ static DEFINE_MUTEX(mtrr_mutex);
 u64 size_or_mask, size_and_mask;
 static bool mtrr_aps_delayed_init;
 
-static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM];
+static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only;
 
 const struct mtrr_ops *mtrr_if;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/mtrr/mtrr.h linux-3.2.22-g-v/arch/x86/kernel/cpu/mtrr/mtrr.h
--- linux-3.2.22/arch/x86/kernel/cpu/mtrr/mtrr.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/mtrr/mtrr.h	2012-07-11 20:20:37.047310894 +0200
@@ -25,7 +25,7 @@ struct mtrr_ops {
 	int	(*validate_add_page)(unsigned long base, unsigned long size,
 				     unsigned int type);
 	int	(*have_wrcomb)(void);
-};
+} __do_const;
 
 extern int generic_get_free_region(unsigned long base, unsigned long size,
 				   int replace_reg);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/cpu/perf_event.c linux-3.2.22-g-v/arch/x86/kernel/cpu/perf_event.c
--- linux-3.2.22/arch/x86/kernel/cpu/perf_event.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/cpu/perf_event.c	2012-07-11 20:20:37.047310894 +0200
@@ -1529,7 +1529,7 @@ perf_callchain_user(struct perf_callchai
 			break;
 
 		perf_callchain_store(entry, frame.return_address);
-		fp = frame.next_frame;
+		fp = (const void __force_user *)frame.next_frame;
 	}
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/crash.c linux-3.2.22-g-v/arch/x86/kernel/crash.c
--- linux-3.2.22/arch/x86/kernel/crash.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/crash.c	2012-07-11 20:20:37.047310894 +0200
@@ -36,10 +36,8 @@ static void kdump_nmi_callback(int cpu, 
 {
 #ifdef CONFIG_X86_32
 	struct pt_regs fixed_regs;
-#endif
 
-#ifdef CONFIG_X86_32
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		crash_fixup_ss_esp(&fixed_regs, regs);
 		regs = &fixed_regs;
 	}
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/doublefault_32.c linux-3.2.22-g-v/arch/x86/kernel/doublefault_32.c
--- linux-3.2.22/arch/x86/kernel/doublefault_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/doublefault_32.c	2012-07-11 20:20:37.047310894 +0200
@@ -11,7 +11,7 @@
 
 #define DOUBLEFAULT_STACKSIZE (1024)
 static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE];
-#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE)
+#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2)
 
 #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM)
 
@@ -21,7 +21,7 @@ static void doublefault_fn(void)
 	unsigned long gdt, tss;
 
 	store_gdt(&gdt_desc);
-	gdt = gdt_desc.address;
+	gdt = (unsigned long)gdt_desc.address;
 
 	printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);
 
@@ -58,10 +58,10 @@ struct tss_struct doublefault_tss __cach
 		/* 0x2 bit is always set */
 		.flags		= X86_EFLAGS_SF | 0x2,
 		.sp		= STACK_START,
-		.es		= __USER_DS,
+		.es		= __KERNEL_DS,
 		.cs		= __KERNEL_CS,
 		.ss		= __KERNEL_DS,
-		.ds		= __USER_DS,
+		.ds		= __KERNEL_DS,
 		.fs		= __KERNEL_PERCPU,
 
 		.__cr3		= __pa_nodebug(swapper_pg_dir),
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/dumpstack_32.c linux-3.2.22-g-v/arch/x86/kernel/dumpstack_32.c
--- linux-3.2.22/arch/x86/kernel/dumpstack_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/dumpstack_32.c	2012-07-11 20:20:37.050642664 +0200
@@ -38,15 +38,13 @@ void dump_trace(struct task_struct *task
 		bp = stack_frame(task, regs);
 
 	for (;;) {
-		struct thread_info *context;
+		void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
 
-		context = (struct thread_info *)
-			((unsigned long)stack & (~(THREAD_SIZE - 1)));
-		bp = ops->walk_stack(context, stack, bp, ops, data, NULL, &graph);
+		bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph);
 
-		stack = (unsigned long *)context->previous_esp;
-		if (!stack)
+		if (stack_start == task_stack_page(task))
 			break;
+		stack = *(unsigned long **)stack_start;
 		if (ops->stack(data, "IRQ") < 0)
 			break;
 		touch_nmi_watchdog();
@@ -96,21 +94,22 @@ void show_registers(struct pt_regs *regs
 	 * When in-kernel, we also print out the stack and code at the
 	 * time of the fault..
 	 */
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		unsigned int code_prologue = code_bytes * 43 / 64;
 		unsigned int code_len = code_bytes;
 		unsigned char c;
 		u8 *ip;
+		unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(smp_processor_id())[(0xffff & regs->cs) >> 3]);
 
 		printk(KERN_EMERG "Stack:\n");
 		show_stack_log_lvl(NULL, regs, &regs->sp, 0, KERN_EMERG);
 
 		printk(KERN_EMERG "Code: ");
 
-		ip = (u8 *)regs->ip - code_prologue;
+		ip = (u8 *)regs->ip - code_prologue + cs_base;
 		if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
 			/* try starting at IP */
-			ip = (u8 *)regs->ip;
+			ip = (u8 *)regs->ip + cs_base;
 			code_len = code_len - code_prologue + 1;
 		}
 		for (i = 0; i < code_len; i++, ip++) {
@@ -119,7 +118,7 @@ void show_registers(struct pt_regs *regs
 				printk(KERN_CONT " Bad EIP value.");
 				break;
 			}
-			if (ip == (u8 *)regs->ip)
+			if (ip == (u8 *)regs->ip + cs_base)
 				printk(KERN_CONT "<%02x> ", c);
 			else
 				printk(KERN_CONT "%02x ", c);
@@ -132,6 +131,7 @@ int is_valid_bugaddr(unsigned long ip)
 {
 	unsigned short ud2;
 
+	ip = ktla_ktva(ip);
 	if (ip < PAGE_OFFSET)
 		return 0;
 	if (probe_kernel_address((unsigned short *)ip, ud2))
@@ -139,3 +139,15 @@ int is_valid_bugaddr(unsigned long ip)
 
 	return ud2 == 0x0b0f;
 }
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+void pax_check_alloca(unsigned long size)
+{
+	unsigned long sp = (unsigned long)&sp, stack_left;
+
+	/* all kernel stacks are of the same size */
+	stack_left = sp & (THREAD_SIZE - 1);
+	BUG_ON(stack_left < 256 || size >= stack_left - 256);
+}
+EXPORT_SYMBOL(pax_check_alloca);
+#endif
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/dumpstack_64.c linux-3.2.22-g-v/arch/x86/kernel/dumpstack_64.c
--- linux-3.2.22/arch/x86/kernel/dumpstack_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/dumpstack_64.c	2012-07-11 20:20:37.050642664 +0200
@@ -119,9 +119,9 @@ void dump_trace(struct task_struct *task
 	unsigned long *irq_stack_end =
 		(unsigned long *)per_cpu(irq_stack_ptr, cpu);
 	unsigned used = 0;
-	struct thread_info *tinfo;
 	int graph = 0;
 	unsigned long dummy;
+	void *stack_start;
 
 	if (!task)
 		task = current;
@@ -142,10 +142,10 @@ void dump_trace(struct task_struct *task
 	 * current stack address. If the stacks consist of nested
 	 * exceptions
 	 */
-	tinfo = task_thread_info(task);
 	for (;;) {
 		char *id;
 		unsigned long *estack_end;
+
 		estack_end = in_exception_stack(cpu, (unsigned long)stack,
 						&used, &id);
 
@@ -153,7 +153,7 @@ void dump_trace(struct task_struct *task
 			if (ops->stack(data, id) < 0)
 				break;
 
-			bp = ops->walk_stack(tinfo, stack, bp, ops,
+			bp = ops->walk_stack(task, estack_end - EXCEPTION_STKSZ, stack, bp, ops,
 					     data, estack_end, &graph);
 			ops->stack(data, "<EOE>");
 			/*
@@ -161,6 +161,8 @@ void dump_trace(struct task_struct *task
 			 * second-to-last pointer (index -2 to end) in the
 			 * exception stack:
 			 */
+			if ((u16)estack_end[-1] != __KERNEL_DS)
+				goto out;
 			stack = (unsigned long *) estack_end[-2];
 			continue;
 		}
@@ -172,7 +174,7 @@ void dump_trace(struct task_struct *task
 			if (in_irq_stack(stack, irq_stack, irq_stack_end)) {
 				if (ops->stack(data, "IRQ") < 0)
 					break;
-				bp = ops->walk_stack(tinfo, stack, bp,
+				bp = ops->walk_stack(task, irq_stack, stack, bp,
 					ops, data, irq_stack_end, &graph);
 				/*
 				 * We link to the next stack (which would be
@@ -191,7 +193,9 @@ void dump_trace(struct task_struct *task
 	/*
 	 * This handles the process stack:
 	 */
-	bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph);
+	stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
+	bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph);
+out:
 	put_cpu();
 }
 EXPORT_SYMBOL(dump_trace);
@@ -305,3 +309,50 @@ int is_valid_bugaddr(unsigned long ip)
 
 	return ud2 == 0x0b0f;
 }
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+void pax_check_alloca(unsigned long size)
+{
+	unsigned long sp = (unsigned long)&sp, stack_start, stack_end;
+	unsigned cpu, used;
+	char *id;
+
+	/* check the process stack first */
+	stack_start = (unsigned long)task_stack_page(current);
+	stack_end = stack_start + THREAD_SIZE;
+	if (likely(stack_start <= sp && sp < stack_end)) {
+		unsigned long stack_left = sp & (THREAD_SIZE - 1);
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	cpu = get_cpu();
+
+	/* check the irq stacks */
+	stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu);
+	stack_start = stack_end - IRQ_STACK_SIZE;
+	if (stack_start <= sp && sp < stack_end) {
+		unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1);
+		put_cpu();
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	/* check the exception stacks */
+	used = 0;
+	stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id);
+	stack_start = stack_end - EXCEPTION_STKSZ;
+	if (stack_end && stack_start <= sp && sp < stack_end) {
+		unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1);
+		put_cpu();
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	put_cpu();
+
+	/* unknown stack */
+	BUG();
+}
+EXPORT_SYMBOL(pax_check_alloca);
+#endif
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/dumpstack.c linux-3.2.22-g-v/arch/x86/kernel/dumpstack.c
--- linux-3.2.22/arch/x86/kernel/dumpstack.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/dumpstack.c	2012-07-11 20:20:37.050642664 +0200
@@ -2,6 +2,9 @@
  *  Copyright (C) 1991, 1992  Linus Torvalds
  *  Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
  */
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+#define __INCLUDED_BY_HIDESYM 1
+#endif
 #include <linux/kallsyms.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
@@ -35,9 +38,8 @@ void printk_address(unsigned long addres
 static void
 print_ftrace_graph_addr(unsigned long addr, void *data,
 			const struct stacktrace_ops *ops,
-			struct thread_info *tinfo, int *graph)
+			struct task_struct *task, int *graph)
 {
-	struct task_struct *task = tinfo->task;
 	unsigned long ret_addr;
 	int index = task->curr_ret_stack;
 
@@ -58,7 +60,7 @@ print_ftrace_graph_addr(unsigned long ad
 static inline void
 print_ftrace_graph_addr(unsigned long addr, void *data,
 			const struct stacktrace_ops *ops,
-			struct thread_info *tinfo, int *graph)
+			struct task_struct *task, int *graph)
 { }
 #endif
 
@@ -69,10 +71,8 @@ print_ftrace_graph_addr(unsigned long ad
  * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
  */
 
-static inline int valid_stack_ptr(struct thread_info *tinfo,
-			void *p, unsigned int size, void *end)
+static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end)
 {
-	void *t = tinfo;
 	if (end) {
 		if (p < end && p >= (end-THREAD_SIZE))
 			return 1;
@@ -83,14 +83,14 @@ static inline int valid_stack_ptr(struct
 }
 
 unsigned long
-print_context_stack(struct thread_info *tinfo,
+print_context_stack(struct task_struct *task, void *stack_start,
 		unsigned long *stack, unsigned long bp,
 		const struct stacktrace_ops *ops, void *data,
 		unsigned long *end, int *graph)
 {
 	struct stack_frame *frame = (struct stack_frame *)bp;
 
-	while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
+	while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) {
 		unsigned long addr;
 
 		addr = *stack;
@@ -102,7 +102,7 @@ print_context_stack(struct thread_info *
 			} else {
 				ops->address(data, addr, 0);
 			}
-			print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
+			print_ftrace_graph_addr(addr, data, ops, task, graph);
 		}
 		stack++;
 	}
@@ -111,7 +111,7 @@ print_context_stack(struct thread_info *
 EXPORT_SYMBOL_GPL(print_context_stack);
 
 unsigned long
-print_context_stack_bp(struct thread_info *tinfo,
+print_context_stack_bp(struct task_struct *task, void *stack_start,
 		       unsigned long *stack, unsigned long bp,
 		       const struct stacktrace_ops *ops, void *data,
 		       unsigned long *end, int *graph)
@@ -119,7 +119,7 @@ print_context_stack_bp(struct thread_inf
 	struct stack_frame *frame = (struct stack_frame *)bp;
 	unsigned long *ret_addr = &frame->return_address;
 
-	while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
+	while (valid_stack_ptr(stack_start, ret_addr, sizeof(*ret_addr), end)) {
 		unsigned long addr = *ret_addr;
 
 		if (!__kernel_text_address(addr))
@@ -128,7 +128,7 @@ print_context_stack_bp(struct thread_inf
 		ops->address(data, addr, 1);
 		frame = frame->next_frame;
 		ret_addr = &frame->return_address;
-		print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
+		print_ftrace_graph_addr(addr, data, ops, task, graph);
 	}
 
 	return (unsigned long)frame;
@@ -186,7 +186,7 @@ void dump_stack(void)
 
 	bp = stack_frame(current, NULL);
 	printk("Pid: %d, comm: %.20s %s %s %.*s\n",
-		current->pid, current->comm, print_tainted(),
+		task_pid_nr(current), current->comm, print_tainted(),
 		init_utsname()->release,
 		(int)strcspn(init_utsname()->version, " "),
 		init_utsname()->version);
@@ -222,6 +222,8 @@ unsigned __kprobes long oops_begin(void)
 }
 EXPORT_SYMBOL_GPL(oops_begin);
 
+extern void gr_handle_kernel_exploit(void);
+
 void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
 {
 	if (regs && kexec_should_crash(current))
@@ -243,7 +245,10 @@ void __kprobes oops_end(unsigned long fl
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
-	do_exit(signr);
+
+	gr_handle_kernel_exploit();
+
+	do_group_exit(signr);
 }
 
 int __kprobes __die(const char *str, struct pt_regs *regs, long err)
@@ -269,7 +274,7 @@ int __kprobes __die(const char *str, str
 
 	show_registers(regs);
 #ifdef CONFIG_X86_32
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		sp = regs->sp;
 		ss = regs->ss & 0xffff;
 	} else {
@@ -297,7 +302,7 @@ void die(const char *str, struct pt_regs
 	unsigned long flags = oops_begin();
 	int sig = SIGSEGV;
 
-	if (!user_mode_vm(regs))
+	if (!user_mode(regs))
 		report_bug(regs->ip, regs);
 
 	if (__die(str, regs, err))
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/early_printk.c linux-3.2.22-g-v/arch/x86/kernel/early_printk.c
--- linux-3.2.22/arch/x86/kernel/early_printk.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/early_printk.c	2012-07-11 20:20:37.050642664 +0200
@@ -7,6 +7,7 @@
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
 #include <linux/errno.h>
+#include <linux/sched.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/fcntl.h>
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/entry_32.S linux-3.2.22-g-v/arch/x86/kernel/entry_32.S
--- linux-3.2.22/arch/x86/kernel/entry_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/entry_32.S	2012-07-11 20:20:37.053972140 +0200
@@ -180,13 +180,146 @@
 	/*CFI_REL_OFFSET gs, PT_GS*/
 .endm
 .macro SET_KERNEL_GS reg
+
+#ifdef CONFIG_CC_STACKPROTECTOR
 	movl $(__KERNEL_STACK_CANARY), \reg
+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
+	movl $(__USER_DS), \reg
+#else
+	xorl \reg, \reg
+#endif
+
 	movl \reg, %gs
 .endm
 
 #endif	/* CONFIG_X86_32_LAZY_GS */
 
-.macro SAVE_ALL
+.macro pax_enter_kernel
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_enter_kernel
+#endif
+.endm
+
+.macro pax_exit_kernel
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_exit_kernel
+#endif
+.endm
+
+#ifdef CONFIG_PAX_KERNEXEC
+ENTRY(pax_enter_kernel)
+#ifdef CONFIG_PARAVIRT
+	pushl %eax
+	pushl %ecx
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0)
+	mov %eax, %esi
+#else
+	mov %cr0, %esi
+#endif
+	bts $16, %esi
+	jnc 1f
+	mov %cs, %esi
+	cmp $__KERNEL_CS, %esi
+	jz 3f
+	ljmp $__KERNEL_CS, $3f
+1:	ljmp $__KERNEXEC_KERNEL_CS, $2f
+2:
+#ifdef CONFIG_PARAVIRT
+	mov %esi, %eax
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
+#else
+	mov %esi, %cr0
+#endif
+3:
+#ifdef CONFIG_PARAVIRT
+	popl %ecx
+	popl %eax
+#endif
+	ret
+ENDPROC(pax_enter_kernel)
+
+ENTRY(pax_exit_kernel)
+#ifdef CONFIG_PARAVIRT
+	pushl %eax
+	pushl %ecx
+#endif
+	mov %cs, %esi
+	cmp $__KERNEXEC_KERNEL_CS, %esi
+	jnz 2f
+#ifdef CONFIG_PARAVIRT
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);
+	mov %eax, %esi
+#else
+	mov %cr0, %esi
+#endif
+	btr $16, %esi
+	ljmp $__KERNEL_CS, $1f
+1:
+#ifdef CONFIG_PARAVIRT
+	mov %esi, %eax
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0);
+#else
+	mov %esi, %cr0
+#endif
+2:
+#ifdef CONFIG_PARAVIRT
+	popl %ecx
+	popl %eax
+#endif
+	ret
+ENDPROC(pax_exit_kernel)
+#endif
+
+.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+.endm
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+/*
+ * ebp: thread_info
+ * ecx, edx: can be clobbered
+ */
+ENTRY(pax_erase_kstack)
+	pushl %edi
+	pushl %eax
+
+	mov TI_lowest_stack(%ebp), %edi
+	mov $-0xBEEF, %eax
+	std
+
+1:	mov %edi, %ecx
+	and $THREAD_SIZE_asm - 1, %ecx
+	shr $2, %ecx
+	repne scasl
+	jecxz 2f
+
+	cmp $2*16, %ecx
+	jc 2f
+
+	mov $2*16, %ecx
+	repe scasl
+	jecxz 2f
+	jne 1b
+
+2:	cld
+	mov %esp, %ecx
+	sub %edi, %ecx
+	shr $2, %ecx
+	rep stosl
+
+	mov TI_task_thread_sp0(%ebp), %edi
+	sub $128, %edi
+	mov %edi, TI_lowest_stack(%ebp)
+
+	popl %eax
+	popl %edi
+	ret
+ENDPROC(pax_erase_kstack)
+#endif
+
+.macro __SAVE_ALL _DS
 	cld
 	PUSH_GS
 	pushl_cfi %fs
@@ -209,7 +342,7 @@
 	CFI_REL_OFFSET ecx, 0
 	pushl_cfi %ebx
 	CFI_REL_OFFSET ebx, 0
-	movl $(__USER_DS), %edx
+	movl $\_DS, %edx
 	movl %edx, %ds
 	movl %edx, %es
 	movl $(__KERNEL_PERCPU), %edx
@@ -217,6 +350,15 @@
 	SET_KERNEL_GS %edx
 .endm
 
+.macro SAVE_ALL
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	__SAVE_ALL __KERNEL_DS
+	pax_enter_kernel
+#else
+	__SAVE_ALL __USER_DS
+#endif
+.endm
+
 .macro RESTORE_INT_REGS
 	popl_cfi %ebx
 	CFI_RESTORE ebx
@@ -302,7 +444,7 @@ ENTRY(ret_from_fork)
 	popfl_cfi
 	jmp syscall_exit
 	CFI_ENDPROC
-END(ret_from_fork)
+ENDPROC(ret_from_fork)
 
 /*
  * Interrupt exit functions should be protected against kprobes
@@ -336,7 +478,15 @@ resume_userspace_sig:
 	andl $SEGMENT_RPL_MASK, %eax
 #endif
 	cmpl $USER_RPL, %eax
+
+#ifdef CONFIG_PAX_KERNEXEC
+	jae resume_userspace
+
+	pax_exit_kernel
+	jmp resume_kernel
+#else
 	jb resume_kernel		# not returning to v8086 or userspace
+#endif
 
 ENTRY(resume_userspace)
 	LOCKDEP_SYS_EXIT
@@ -348,8 +498,8 @@ ENTRY(resume_userspace)
 	andl $_TIF_WORK_MASK, %ecx	# is there any work to be done on
 					# int/exception return?
 	jne work_pending
-	jmp restore_all
-END(ret_from_exception)
+	jmp restore_all_pax
+ENDPROC(ret_from_exception)
 
 #ifdef CONFIG_PREEMPT
 ENTRY(resume_kernel)
@@ -364,7 +514,7 @@ need_resched:
 	jz restore_all
 	call preempt_schedule_irq
 	jmp need_resched
-END(resume_kernel)
+ENDPROC(resume_kernel)
 #endif
 	CFI_ENDPROC
 /*
@@ -398,23 +548,34 @@ sysenter_past_esp:
 	/*CFI_REL_OFFSET cs, 0*/
 	/*
 	 * Push current_thread_info()->sysenter_return to the stack.
-	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
-	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
 	 */
-	pushl_cfi ((TI_sysenter_return)-THREAD_SIZE+8+4*4)(%esp)
+	pushl_cfi $0
 	CFI_REL_OFFSET eip, 0
 
 	pushl_cfi %eax
 	SAVE_ALL
+	GET_THREAD_INFO(%ebp)
+	movl TI_sysenter_return(%ebp),%ebp
+	movl %ebp,PT_EIP(%esp)
 	ENABLE_INTERRUPTS(CLBR_NONE)
 
 /*
  * Load the potential sixth argument from user stack.
  * Careful about security.
  */
+	movl PT_OLDESP(%esp),%ebp
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov PT_OLDSS(%esp),%ds
+1:	movl %ds:(%ebp),%ebp
+	push %ss
+	pop %ds
+#else
 	cmpl $__PAGE_OFFSET-3,%ebp
 	jae syscall_fault
 1:	movl (%ebp),%ebp
+#endif
+
 	movl %ebp,PT_EBP(%esp)
 .section __ex_table,"a"
 	.align 4
@@ -437,12 +598,24 @@ sysenter_do_call:
 	testl $_TIF_ALLWORK_MASK, %ecx
 	jne sysexit_audit
 sysenter_exit:
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushl_cfi %eax
+	movl %esp, %eax
+	call pax_randomize_kstack
+	popl_cfi %eax
+#endif
+
+	pax_erase_kstack
+
 /* if something modifies registers it must also disable sysexit */
 	movl PT_EIP(%esp), %edx
 	movl PT_OLDESP(%esp), %ecx
 	xorl %ebp,%ebp
 	TRACE_IRQS_ON
 1:	mov  PT_FS(%esp), %fs
+2:	mov  PT_DS(%esp), %ds
+3:	mov  PT_ES(%esp), %es
 	PTGS_TO_GS
 	ENABLE_INTERRUPTS_SYSEXIT
 
@@ -459,6 +632,9 @@ sysenter_audit:
 	movl %eax,%edx			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%eax	/* 1st arg: audit arch */
 	call audit_syscall_entry
+
+	pax_erase_kstack
+
 	pushl_cfi %ebx
 	movl PT_EAX(%esp),%eax		/* reload syscall number */
 	jmp sysenter_do_call
@@ -485,11 +661,17 @@ sysexit_audit:
 
 	CFI_ENDPROC
 .pushsection .fixup,"ax"
-2:	movl $0,PT_FS(%esp)
+4:	movl $0,PT_FS(%esp)
+	jmp 1b
+5:	movl $0,PT_DS(%esp)
+	jmp 1b
+6:	movl $0,PT_ES(%esp)
 	jmp 1b
 .section __ex_table,"a"
 	.align 4
-	.long 1b,2b
+	.long 1b,4b
+	.long 2b,5b
+	.long 3b,6b
 .popsection
 	PTGS_TO_GS_EX
 ENDPROC(ia32_sysenter_target)
@@ -522,6 +704,15 @@ syscall_exit:
 	testl $_TIF_ALLWORK_MASK, %ecx	# current->work
 	jne syscall_exit_work
 
+restore_all_pax:
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	movl %esp, %eax
+	call pax_randomize_kstack
+#endif
+
+	pax_erase_kstack
+
 restore_all:
 	TRACE_IRQS_IRET
 restore_all_notrace:
@@ -581,14 +772,34 @@ ldt_ss:
  * compensating for the offset by changing to the ESPFIX segment with
  * a base address that matches for the difference.
  */
-#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8)
+#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx)
 	mov %esp, %edx			/* load kernel esp */
 	mov PT_OLDESP(%esp), %eax	/* load userspace esp */
 	mov %dx, %ax			/* eax: new kernel esp */
 	sub %eax, %edx			/* offset (low word is 0) */
+#ifdef CONFIG_SMP
+	movl PER_CPU_VAR(cpu_number), %ebx
+	shll $PAGE_SHIFT_asm, %ebx
+	addl $cpu_gdt_table, %ebx
+#else
+	movl $cpu_gdt_table, %ebx
+#endif
 	shr $16, %edx
-	mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */
-	mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	mov %cr0, %esi
+	btr $16, %esi
+	mov %esi, %cr0
+#endif
+
+	mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */
+	mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	bts $16, %esi
+	mov %esi, %cr0
+#endif
+
 	pushl_cfi $__ESPFIX_SS
 	pushl_cfi %eax			/* new kernel esp */
 	/* Disable interrupts, but do not irqtrace this section: we
@@ -617,34 +828,28 @@ work_resched:
 	movl TI_flags(%ebp), %ecx
 	andl $_TIF_WORK_MASK, %ecx	# is there any work to be done other
 					# than syscall tracing?
-	jz restore_all
+	jz restore_all_pax
 	testb $_TIF_NEED_RESCHED, %cl
 	jnz work_resched
 
 work_notifysig:				# deal with pending signals and
 					# notify-resume requests
+	movl %esp, %eax
 #ifdef CONFIG_VM86
 	testl $X86_EFLAGS_VM, PT_EFLAGS(%esp)
-	movl %esp, %eax
-	jne work_notifysig_v86		# returning to kernel-space or
+	jz 1f				# returning to kernel-space or
 					# vm86-space
-	xorl %edx, %edx
-	call do_notify_resume
-	jmp resume_userspace_sig
 
-	ALIGN
-work_notifysig_v86:
 	pushl_cfi %ecx			# save ti_flags for do_notify_resume
 	call save_v86_state		# %eax contains pt_regs pointer
 	popl_cfi %ecx
 	movl %eax, %esp
-#else
-	movl %esp, %eax
+1:
 #endif
 	xorl %edx, %edx
 	call do_notify_resume
 	jmp resume_userspace_sig
-END(work_pending)
+ENDPROC(work_pending)
 
 	# perform syscall exit tracing
 	ALIGN
@@ -652,11 +857,14 @@ syscall_trace_entry:
 	movl $-ENOSYS,PT_EAX(%esp)
 	movl %esp, %eax
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	/* What it returned is what we'll actually use.  */
 	cmpl $(nr_syscalls), %eax
 	jnae syscall_call
 	jmp syscall_exit
-END(syscall_trace_entry)
+ENDPROC(syscall_trace_entry)
 
 	# perform syscall exit tracing
 	ALIGN
@@ -669,20 +877,24 @@ syscall_exit_work:
 	movl %esp, %eax
 	call syscall_trace_leave
 	jmp resume_userspace
-END(syscall_exit_work)
+ENDPROC(syscall_exit_work)
 	CFI_ENDPROC
 
 	RING0_INT_FRAME			# can't unwind into user space anyway
 syscall_fault:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	push %ss
+	pop %ds
+#endif
 	GET_THREAD_INFO(%ebp)
 	movl $-EFAULT,PT_EAX(%esp)
 	jmp resume_userspace
-END(syscall_fault)
+ENDPROC(syscall_fault)
 
 syscall_badsys:
 	movl $-ENOSYS,PT_EAX(%esp)
 	jmp resume_userspace
-END(syscall_badsys)
+ENDPROC(syscall_badsys)
 	CFI_ENDPROC
 /*
  * End of kprobes section
@@ -756,6 +968,36 @@ ptregs_clone:
 	CFI_ENDPROC
 ENDPROC(ptregs_clone)
 
+	ALIGN;
+ENTRY(kernel_execve)
+	CFI_STARTPROC
+	pushl_cfi %ebp
+	sub $PT_OLDSS+4,%esp
+	pushl_cfi %edi
+	pushl_cfi %ecx
+	pushl_cfi %eax
+	lea 3*4(%esp),%edi
+	mov $PT_OLDSS/4+1,%ecx
+	xorl %eax,%eax
+	rep stosl
+	popl_cfi %eax
+	popl_cfi %ecx
+	popl_cfi %edi
+	movl $X86_EFLAGS_IF,PT_EFLAGS(%esp)
+	pushl_cfi %esp
+	call sys_execve
+	add $4,%esp
+	CFI_ADJUST_CFA_OFFSET -4
+	GET_THREAD_INFO(%ebp)
+	test %eax,%eax
+	jz syscall_exit
+	add $PT_OLDSS+4,%esp
+	CFI_ADJUST_CFA_OFFSET -PT_OLDSS-4
+	popl_cfi %ebp
+	ret
+	CFI_ENDPROC
+ENDPROC(kernel_execve)
+
 .macro FIXUP_ESPFIX_STACK
 /*
  * Switch back for ESPFIX stack to the normal zerobased stack
@@ -765,8 +1007,15 @@ ENDPROC(ptregs_clone)
  * normal stack and adjusts ESP with the matching offset.
  */
 	/* fixup the stack */
-	mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */
-	mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
+#ifdef CONFIG_SMP
+	movl PER_CPU_VAR(cpu_number), %ebx
+	shll $PAGE_SHIFT_asm, %ebx
+	addl $cpu_gdt_table, %ebx
+#else
+	movl $cpu_gdt_table, %ebx
+#endif
+	mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */
+	mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */
 	shl $16, %eax
 	addl %esp, %eax			/* the adjusted stack pointer */
 	pushl_cfi $__KERNEL_DS
@@ -819,7 +1068,7 @@ vector=vector+1
   .endr
 2:	jmp common_interrupt
 .endr
-END(irq_entries_start)
+ENDPROC(irq_entries_start)
 
 .previous
 END(interrupt)
@@ -867,7 +1116,7 @@ ENTRY(coprocessor_error)
 	pushl_cfi $do_coprocessor_error
 	jmp error_code
 	CFI_ENDPROC
-END(coprocessor_error)
+ENDPROC(coprocessor_error)
 
 ENTRY(simd_coprocessor_error)
 	RING0_INT_FRAME
@@ -888,7 +1137,7 @@ ENTRY(simd_coprocessor_error)
 #endif
 	jmp error_code
 	CFI_ENDPROC
-END(simd_coprocessor_error)
+ENDPROC(simd_coprocessor_error)
 
 ENTRY(device_not_available)
 	RING0_INT_FRAME
@@ -896,7 +1145,7 @@ ENTRY(device_not_available)
 	pushl_cfi $do_device_not_available
 	jmp error_code
 	CFI_ENDPROC
-END(device_not_available)
+ENDPROC(device_not_available)
 
 #ifdef CONFIG_PARAVIRT
 ENTRY(native_iret)
@@ -905,12 +1154,12 @@ ENTRY(native_iret)
 	.align 4
 	.long native_iret, iret_exc
 .previous
-END(native_iret)
+ENDPROC(native_iret)
 
 ENTRY(native_irq_enable_sysexit)
 	sti
 	sysexit
-END(native_irq_enable_sysexit)
+ENDPROC(native_irq_enable_sysexit)
 #endif
 
 ENTRY(overflow)
@@ -919,7 +1168,7 @@ ENTRY(overflow)
 	pushl_cfi $do_overflow
 	jmp error_code
 	CFI_ENDPROC
-END(overflow)
+ENDPROC(overflow)
 
 ENTRY(bounds)
 	RING0_INT_FRAME
@@ -927,7 +1176,7 @@ ENTRY(bounds)
 	pushl_cfi $do_bounds
 	jmp error_code
 	CFI_ENDPROC
-END(bounds)
+ENDPROC(bounds)
 
 ENTRY(invalid_op)
 	RING0_INT_FRAME
@@ -935,7 +1184,7 @@ ENTRY(invalid_op)
 	pushl_cfi $do_invalid_op
 	jmp error_code
 	CFI_ENDPROC
-END(invalid_op)
+ENDPROC(invalid_op)
 
 ENTRY(coprocessor_segment_overrun)
 	RING0_INT_FRAME
@@ -943,35 +1192,35 @@ ENTRY(coprocessor_segment_overrun)
 	pushl_cfi $do_coprocessor_segment_overrun
 	jmp error_code
 	CFI_ENDPROC
-END(coprocessor_segment_overrun)
+ENDPROC(coprocessor_segment_overrun)
 
 ENTRY(invalid_TSS)
 	RING0_EC_FRAME
 	pushl_cfi $do_invalid_TSS
 	jmp error_code
 	CFI_ENDPROC
-END(invalid_TSS)
+ENDPROC(invalid_TSS)
 
 ENTRY(segment_not_present)
 	RING0_EC_FRAME
 	pushl_cfi $do_segment_not_present
 	jmp error_code
 	CFI_ENDPROC
-END(segment_not_present)
+ENDPROC(segment_not_present)
 
 ENTRY(stack_segment)
 	RING0_EC_FRAME
 	pushl_cfi $do_stack_segment
 	jmp error_code
 	CFI_ENDPROC
-END(stack_segment)
+ENDPROC(stack_segment)
 
 ENTRY(alignment_check)
 	RING0_EC_FRAME
 	pushl_cfi $do_alignment_check
 	jmp error_code
 	CFI_ENDPROC
-END(alignment_check)
+ENDPROC(alignment_check)
 
 ENTRY(divide_error)
 	RING0_INT_FRAME
@@ -979,7 +1228,7 @@ ENTRY(divide_error)
 	pushl_cfi $do_divide_error
 	jmp error_code
 	CFI_ENDPROC
-END(divide_error)
+ENDPROC(divide_error)
 
 #ifdef CONFIG_X86_MCE
 ENTRY(machine_check)
@@ -988,7 +1237,7 @@ ENTRY(machine_check)
 	pushl_cfi machine_check_vector
 	jmp error_code
 	CFI_ENDPROC
-END(machine_check)
+ENDPROC(machine_check)
 #endif
 
 ENTRY(spurious_interrupt_bug)
@@ -997,7 +1246,7 @@ ENTRY(spurious_interrupt_bug)
 	pushl_cfi $do_spurious_interrupt_bug
 	jmp error_code
 	CFI_ENDPROC
-END(spurious_interrupt_bug)
+ENDPROC(spurious_interrupt_bug)
 /*
  * End of kprobes section
  */
@@ -1112,7 +1361,7 @@ BUILD_INTERRUPT3(xen_hvm_callback_vector
 
 ENTRY(mcount)
 	ret
-END(mcount)
+ENDPROC(mcount)
 
 ENTRY(ftrace_caller)
 	cmpl $0, function_trace_stop
@@ -1141,7 +1390,7 @@ ftrace_graph_call:
 .globl ftrace_stub
 ftrace_stub:
 	ret
-END(ftrace_caller)
+ENDPROC(ftrace_caller)
 
 #else /* ! CONFIG_DYNAMIC_FTRACE */
 
@@ -1177,7 +1426,7 @@ trace:
 	popl %ecx
 	popl %eax
 	jmp ftrace_stub
-END(mcount)
+ENDPROC(mcount)
 #endif /* CONFIG_DYNAMIC_FTRACE */
 #endif /* CONFIG_FUNCTION_TRACER */
 
@@ -1198,7 +1447,7 @@ ENTRY(ftrace_graph_caller)
 	popl %ecx
 	popl %eax
 	ret
-END(ftrace_graph_caller)
+ENDPROC(ftrace_graph_caller)
 
 .globl return_to_handler
 return_to_handler:
@@ -1212,7 +1461,6 @@ return_to_handler:
 	jmp *%ecx
 #endif
 
-.section .rodata,"a"
 #include "syscall_table_32.S"
 
 syscall_table_size=(.-sys_call_table)
@@ -1258,15 +1506,18 @@ error_code:
 	movl $-1, PT_ORIG_EAX(%esp)	# no syscall to restart
 	REG_TO_PTGS %ecx
 	SET_KERNEL_GS %ecx
-	movl $(__USER_DS), %ecx
+	movl $(__KERNEL_DS), %ecx
 	movl %ecx, %ds
 	movl %ecx, %es
+
+	pax_enter_kernel
+
 	TRACE_IRQS_OFF
 	movl %esp,%eax			# pt_regs pointer
 	call *%edi
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(page_fault)
+ENDPROC(page_fault)
 
 /*
  * Debug traps and NMI can happen at the one SYSENTER instruction
@@ -1308,7 +1559,7 @@ debug_stack_correct:
 	call do_debug
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(debug)
+ENDPROC(debug)
 
 /*
  * NMI is doubly nasty. It can happen _while_ we're handling
@@ -1345,6 +1596,9 @@ nmi_stack_correct:
 	xorl %edx,%edx		# zero error code
 	movl %esp,%eax		# pt_regs pointer
 	call do_nmi
+
+	pax_exit_kernel
+
 	jmp restore_all_notrace
 	CFI_ENDPROC
 
@@ -1381,12 +1635,15 @@ nmi_espfix_stack:
 	FIXUP_ESPFIX_STACK		# %eax == %esp
 	xorl %edx,%edx			# zero error code
 	call do_nmi
+
+	pax_exit_kernel
+
 	RESTORE_REGS
 	lss 12+4(%esp), %esp		# back to espfix stack
 	CFI_ADJUST_CFA_OFFSET -24
 	jmp irq_return
 	CFI_ENDPROC
-END(nmi)
+ENDPROC(nmi)
 
 ENTRY(int3)
 	RING0_INT_FRAME
@@ -1398,14 +1655,14 @@ ENTRY(int3)
 	call do_int3
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(int3)
+ENDPROC(int3)
 
 ENTRY(general_protection)
 	RING0_EC_FRAME
 	pushl_cfi $do_general_protection
 	jmp error_code
 	CFI_ENDPROC
-END(general_protection)
+ENDPROC(general_protection)
 
 #ifdef CONFIG_KVM_GUEST
 ENTRY(async_page_fault)
@@ -1413,7 +1670,7 @@ ENTRY(async_page_fault)
 	pushl_cfi $do_async_page_fault
 	jmp error_code
 	CFI_ENDPROC
-END(async_page_fault)
+ENDPROC(async_page_fault)
 #endif
 
 /*
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/entry_64.S linux-3.2.22-g-v/arch/x86/kernel/entry_64.S
--- linux-3.2.22/arch/x86/kernel/entry_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/entry_64.S	2012-07-11 20:20:37.053972140 +0200
@@ -55,6 +55,8 @@
 #include <asm/paravirt.h>
 #include <asm/ftrace.h>
 #include <asm/percpu.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -68,8 +70,9 @@
 #ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 ENTRY(mcount)
+	pax_force_retaddr
 	retq
-END(mcount)
+ENDPROC(mcount)
 
 ENTRY(ftrace_caller)
 	cmpl $0, function_trace_stop
@@ -92,8 +95,9 @@ GLOBAL(ftrace_graph_call)
 #endif
 
 GLOBAL(ftrace_stub)
+	pax_force_retaddr
 	retq
-END(ftrace_caller)
+ENDPROC(ftrace_caller)
 
 #else /* ! CONFIG_DYNAMIC_FTRACE */
 ENTRY(mcount)
@@ -112,6 +116,7 @@ ENTRY(mcount)
 #endif
 
 GLOBAL(ftrace_stub)
+	pax_force_retaddr
 	retq
 
 trace:
@@ -121,12 +126,13 @@ trace:
 	movq 8(%rbp), %rsi
 	subq $MCOUNT_INSN_SIZE, %rdi
 
+	pax_force_fptr ftrace_trace_function
 	call   *ftrace_trace_function
 
 	MCOUNT_RESTORE_FRAME
 
 	jmp ftrace_stub
-END(mcount)
+ENDPROC(mcount)
 #endif /* CONFIG_DYNAMIC_FTRACE */
 #endif /* CONFIG_FUNCTION_TRACER */
 
@@ -146,8 +152,9 @@ ENTRY(ftrace_graph_caller)
 
 	MCOUNT_RESTORE_FRAME
 
+	pax_force_retaddr
 	retq
-END(ftrace_graph_caller)
+ENDPROC(ftrace_graph_caller)
 
 GLOBAL(return_to_handler)
 	subq  $24, %rsp
@@ -163,6 +170,7 @@ GLOBAL(return_to_handler)
 	movq 8(%rsp), %rdx
 	movq (%rsp), %rax
 	addq $24, %rsp
+	pax_force_fptr %rdi
 	jmp *%rdi
 #endif
 
@@ -178,6 +186,282 @@ ENTRY(native_usergs_sysret64)
 ENDPROC(native_usergs_sysret64)
 #endif /* CONFIG_PARAVIRT */
 
+	.macro ljmpq sel, off
+#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM)
+	.byte 0x48; ljmp *1234f(%rip)
+	.pushsection .rodata
+	.align 16
+	1234: .quad \off; .word \sel
+	.popsection
+#else
+	pushq $\sel
+	pushq $\off
+	lretq
+#endif
+	.endm
+
+	.macro pax_enter_kernel
+	pax_set_fptr_mask
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_enter_kernel
+#endif
+	.endm
+
+	.macro pax_exit_kernel
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_exit_kernel
+#endif
+	.endm
+
+#ifdef CONFIG_PAX_KERNEXEC
+ENTRY(pax_enter_kernel)
+	pushq %rdi
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	jnc 3f
+	mov %cs,%edi
+	cmp $__KERNEL_CS,%edi
+	jnz 2f
+1:
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI)
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+
+2:	ljmpq __KERNEL_CS,1f
+3:	ljmpq __KERNEXEC_KERNEL_CS,4f
+4:	SET_RDI_INTO_CR0
+	jmp 1b
+ENDPROC(pax_enter_kernel)
+
+ENTRY(pax_exit_kernel)
+	pushq %rdi
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+	mov %cs,%rdi
+	cmp $__KERNEXEC_KERNEL_CS,%edi
+	jz 2f
+1:
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI);
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+
+2:	GET_CR0_INTO_RDI
+	btr $16,%rdi
+	ljmpq __KERNEL_CS,3f
+3:	SET_RDI_INTO_CR0
+	jmp 1b
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI);
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+ENDPROC(pax_exit_kernel)
+#endif
+
+	.macro pax_enter_kernel_user
+	pax_set_fptr_mask
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_enter_kernel_user
+#endif
+	.endm
+
+	.macro pax_exit_kernel_user
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_exit_kernel_user
+#endif
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushq %rax
+	call pax_randomize_kstack
+	popq %rax
+#endif
+	.endm
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+ENTRY(pax_enter_kernel_user)
+	pushq %rdi
+	pushq %rbx
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+	GET_CR3_INTO_RDI
+	mov %rdi,%rbx
+	add $__START_KERNEL_map,%rbx
+	sub phys_base(%rip),%rbx
+
+#ifdef CONFIG_PARAVIRT
+	pushq %rdi
+	cmpl $0, pv_info+PARAVIRT_enabled
+	jz 1f
+	i = 0
+	.rept USER_PGD_PTRS
+	mov i*8(%rbx),%rsi
+	mov $0,%sil
+	lea i*8(%rbx),%rdi
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
+	i = i + 1
+	.endr
+	jmp 2f
+1:
+#endif
+
+	i = 0
+	.rept USER_PGD_PTRS
+	movb $0,i*8(%rbx)
+	i = i + 1
+	.endr
+
+#ifdef CONFIG_PARAVIRT
+2:	popq %rdi
+#endif
+	SET_RDI_INTO_CR3
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	SET_RDI_INTO_CR0
+#endif
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI)
+#endif
+
+	popq %rbx
+	popq %rdi
+	pax_force_retaddr
+	retq
+ENDPROC(pax_enter_kernel_user)
+
+ENTRY(pax_exit_kernel_user)
+	push %rdi
+
+#ifdef CONFIG_PARAVIRT
+	pushq %rbx
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	btr $16,%rdi
+	SET_RDI_INTO_CR0
+#endif
+
+	GET_CR3_INTO_RDI
+	add $__START_KERNEL_map,%rdi
+	sub phys_base(%rip),%rdi
+
+#ifdef CONFIG_PARAVIRT
+	cmpl $0, pv_info+PARAVIRT_enabled
+	jz 1f
+	mov %rdi,%rbx
+	i = 0
+	.rept USER_PGD_PTRS
+	mov i*8(%rbx),%rsi
+	mov $0x67,%sil
+	lea i*8(%rbx),%rdi
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
+	i = i + 1
+	.endr
+	jmp 2f
+1:
+#endif
+
+	i = 0
+	.rept USER_PGD_PTRS
+	movb $0x67,i*8(%rdi)
+	i = i + 1
+	.endr
+
+#ifdef CONFIG_PARAVIRT
+2:	PV_RESTORE_REGS(CLBR_RDI)
+	popq %rbx
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+ENDPROC(pax_exit_kernel_user)
+#endif
+
+.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+.endm
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+/*
+ * r11: thread_info
+ * rcx, rdx: can be clobbered
+ */
+ENTRY(pax_erase_kstack)
+	pushq %rdi
+	pushq %rax
+	pushq %r11
+
+	GET_THREAD_INFO(%r11)
+	mov TI_lowest_stack(%r11), %rdi
+	mov $-0xBEEF, %rax
+	std
+
+1:	mov %edi, %ecx
+	and $THREAD_SIZE_asm - 1, %ecx
+	shr $3, %ecx
+	repne scasq
+	jecxz 2f
+
+	cmp $2*8, %ecx
+	jc 2f
+
+	mov $2*8, %ecx
+	repe scasq
+	jecxz 2f
+	jne 1b
+
+2:	cld
+	mov %esp, %ecx
+	sub %edi, %ecx
+
+	cmp $THREAD_SIZE_asm, %rcx
+	jb 3f
+	ud2
+3:
+
+	shr $3, %ecx
+	rep stosq
+
+	mov TI_task_thread_sp0(%r11), %rdi
+	sub $256, %rdi
+	mov %rdi, TI_lowest_stack(%r11)
+
+	popq %r11
+	popq %rax
+	popq %rdi
+	pax_force_retaddr
+	ret
+ENDPROC(pax_erase_kstack)
+#endif
 
 .macro TRACE_IRQS_IRETQ offset=ARGOFFSET
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -231,8 +515,8 @@ ENDPROC(native_usergs_sysret64)
 	.endm
 
 	.macro UNFAKE_STACK_FRAME
-	addq $8*6, %rsp
-	CFI_ADJUST_CFA_OFFSET	-(6*8)
+	addq $8*6 + ARG_SKIP, %rsp
+	CFI_ADJUST_CFA_OFFSET	-(6*8 + ARG_SKIP)
 	.endm
 
 /*
@@ -319,7 +603,7 @@ ENDPROC(native_usergs_sysret64)
 	movq %rsp, %rsi
 
 	leaq -RBP(%rsp),%rdi	/* arg1 for handler */
-	testl $3, CS(%rdi)
+	testb $3, CS(%rdi)
 	je 1f
 	SWAPGS
 	/*
@@ -355,9 +639,10 @@ ENTRY(save_rest)
 	movq_cfi r15, R15+16
 	movq %r11, 8(%rsp)	/* return address */
 	FIXUP_TOP_OF_STACK %r11, 16
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(save_rest)
+ENDPROC(save_rest)
 
 /* save complete stack frame */
 	.pushsection .kprobes.text, "ax"
@@ -386,9 +671,10 @@ ENTRY(save_paranoid)
 	js 1f	/* negative -> in kernel */
 	SWAPGS
 	xorl %ebx,%ebx
-1:	ret
+1:	pax_force_retaddr_bts
+	ret
 	CFI_ENDPROC
-END(save_paranoid)
+ENDPROC(save_paranoid)
 	.popsection
 
 /*
@@ -410,7 +696,7 @@ ENTRY(ret_from_fork)
 
 	RESTORE_REST
 
-	testl $3, CS-ARGOFFSET(%rsp)		# from kernel_thread?
+	testb $3, CS-ARGOFFSET(%rsp)		# from kernel_thread?
 	je   int_ret_from_sys_call
 
 	testl $_TIF_IA32, TI_flags(%rcx)	# 32-bit compat task needs IRET
@@ -420,7 +706,7 @@ ENTRY(ret_from_fork)
 	jmp ret_from_sys_call			# go to the SYSRET fastpath
 
 	CFI_ENDPROC
-END(ret_from_fork)
+ENDPROC(ret_from_fork)
 
 /*
  * System call entry. Up to 6 arguments in registers are supported.
@@ -456,7 +742,7 @@ END(ret_from_fork)
 ENTRY(system_call)
 	CFI_STARTPROC	simple
 	CFI_SIGNAL_FRAME
-	CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET
+	CFI_DEF_CFA	rsp,0
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	SWAPGS_UNSAFE_STACK
@@ -469,12 +755,13 @@ ENTRY(system_call_after_swapgs)
 
 	movq	%rsp,PER_CPU_VAR(old_rsp)
 	movq	PER_CPU_VAR(kernel_stack),%rsp
+	SAVE_ARGS 8*6,0
+	pax_enter_kernel_user
 	/*
 	 * No need to follow this irqs off/on section - it's straight
 	 * and short:
 	 */
 	ENABLE_INTERRUPTS(CLBR_NONE)
-	SAVE_ARGS 8,0
 	movq  %rax,ORIG_RAX-ARGOFFSET(%rsp)
 	movq  %rcx,RIP-ARGOFFSET(%rsp)
 	CFI_REL_OFFSET rip,RIP-ARGOFFSET
@@ -484,7 +771,7 @@ ENTRY(system_call_after_swapgs)
 system_call_fastpath:
 	cmpq $__NR_syscall_max,%rax
 	ja badsys
-	movq %r10,%rcx
+	movq R10-ARGOFFSET(%rsp),%rcx
 	call *sys_call_table(,%rax,8)  # XXX:	 rip relative
 	movq %rax,RAX-ARGOFFSET(%rsp)
 /*
@@ -503,6 +790,8 @@ sysret_check:
 	andl %edi,%edx
 	jnz  sysret_careful
 	CFI_REMEMBER_STATE
+	pax_exit_kernel_user
+	pax_erase_kstack
 	/*
 	 * sysretq will re-enable interrupts:
 	 */
@@ -554,14 +843,18 @@ badsys:
 	 * jump back to the normal fast path.
 	 */
 auditsys:
-	movq %r10,%r9			/* 6th arg: 4th syscall arg */
+	movq R10-ARGOFFSET(%rsp),%r9	/* 6th arg: 4th syscall arg */
 	movq %rdx,%r8			/* 5th arg: 3rd syscall arg */
 	movq %rsi,%rcx			/* 4th arg: 2nd syscall arg */
 	movq %rdi,%rdx			/* 3rd arg: 1st syscall arg */
 	movq %rax,%rsi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_X86_64,%edi	/* 1st arg: audit arch */
 	call audit_syscall_entry
+
+	pax_erase_kstack
+
 	LOAD_ARGS 0		/* reload call-clobbered registers */
+	pax_set_fptr_mask
 	jmp system_call_fastpath
 
 	/*
@@ -591,16 +884,20 @@ tracesys:
 	FIXUP_TOP_OF_STACK %rdi
 	movq %rsp,%rdi
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	/*
 	 * Reload arg registers from stack in case ptrace changed them.
 	 * We don't reload %rax because syscall_trace_enter() returned
 	 * the value it wants us to use in the table lookup.
 	 */
 	LOAD_ARGS ARGOFFSET, 1
+	pax_set_fptr_mask
 	RESTORE_REST
 	cmpq $__NR_syscall_max,%rax
 	ja   int_ret_from_sys_call	/* RAX(%rsp) set to -ENOSYS above */
-	movq %r10,%rcx	/* fixup for C */
+	movq R10-ARGOFFSET(%rsp),%rcx	/* fixup for C */
 	call *sys_call_table(,%rax,8)
 	movq %rax,RAX-ARGOFFSET(%rsp)
 	/* Use IRET because user could have changed frame */
@@ -612,7 +909,7 @@ tracesys:
 GLOBAL(int_ret_from_sys_call)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl $3,CS-ARGOFFSET(%rsp)
+	testb $3,CS-ARGOFFSET(%rsp)
 	je retint_restore_args
 	movl $_TIF_ALLWORK_MASK,%edi
 	/* edi:	mask to check */
@@ -623,6 +920,7 @@ GLOBAL(int_with_check)
 	andl %edi,%edx
 	jnz   int_careful
 	andl    $~TS_COMPAT,TI_status(%rcx)
+	pax_erase_kstack
 	jmp   retint_swapgs
 
 	/* Either reschedule or signal or syscall exit tracking needed. */
@@ -669,7 +967,7 @@ int_restore_rest:
 	TRACE_IRQS_OFF
 	jmp int_with_check
 	CFI_ENDPROC
-END(system_call)
+ENDPROC(system_call)
 
 /*
  * Certain special system calls that need to save a complete full stack frame.
@@ -685,7 +983,7 @@ ENTRY(\label)
 	call \func
 	jmp ptregscall_common
 	CFI_ENDPROC
-END(\label)
+ENDPROC(\label)
 	.endm
 
 	PTREGSCALL stub_clone, sys_clone, %r8
@@ -703,9 +1001,10 @@ ENTRY(ptregscall_common)
 	movq_cfi_restore R12+8, r12
 	movq_cfi_restore RBP+8, rbp
 	movq_cfi_restore RBX+8, rbx
+	pax_force_retaddr
 	ret $REST_SKIP		/* pop extended registers */
 	CFI_ENDPROC
-END(ptregscall_common)
+ENDPROC(ptregscall_common)
 
 ENTRY(stub_execve)
 	CFI_STARTPROC
@@ -720,7 +1019,7 @@ ENTRY(stub_execve)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_execve)
+ENDPROC(stub_execve)
 
 /*
  * sigreturn is special because it needs to restore all registers on return.
@@ -738,7 +1037,7 @@ ENTRY(stub_rt_sigreturn)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_rt_sigreturn)
+ENDPROC(stub_rt_sigreturn)
 
 /*
  * Build the entry stubs and pointer table with some assembler magic.
@@ -773,7 +1072,7 @@ vector=vector+1
 2:	jmp common_interrupt
 .endr
 	CFI_ENDPROC
-END(irq_entries_start)
+ENDPROC(irq_entries_start)
 
 .previous
 END(interrupt)
@@ -793,6 +1092,16 @@ END(interrupt)
 	subq $ORIG_RAX-RBP, %rsp
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP
 	SAVE_ARGS_IRQ
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rdi)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	call \func
 	.endm
 
@@ -824,7 +1133,7 @@ ret_from_intr:
 
 exit_intr:
 	GET_THREAD_INFO(%rcx)
-	testl $3,CS-ARGOFFSET(%rsp)
+	testb $3,CS-ARGOFFSET(%rsp)
 	je retint_kernel
 
 	/* Interrupt came from user space */
@@ -846,12 +1155,15 @@ retint_swapgs:		/* return to user-space 
 	 * The iretq could re-enable interrupts:
 	 */
 	DISABLE_INTERRUPTS(CLBR_ANY)
+	pax_exit_kernel_user
 	TRACE_IRQS_IRETQ
 	SWAPGS
 	jmp restore_args
 
 retint_restore_args:	/* return to kernel space */
 	DISABLE_INTERRUPTS(CLBR_ANY)
+	pax_exit_kernel
+	pax_force_retaddr RIP-ARGOFFSET
 	/*
 	 * The iretq could re-enable interrupts:
 	 */
@@ -940,7 +1252,7 @@ ENTRY(retint_kernel)
 #endif
 
 	CFI_ENDPROC
-END(common_interrupt)
+ENDPROC(common_interrupt)
 /*
  * End of kprobes section
  */
@@ -956,7 +1268,7 @@ ENTRY(\sym)
 	interrupt \do_sym
 	jmp ret_from_intr
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 #ifdef CONFIG_SMP
@@ -1021,12 +1333,22 @@ ENTRY(\sym)
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	call error_entry
 	DEFAULT_FRAME 0
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	movq %rsp,%rdi		/* pt_regs pointer */
 	xorl %esi,%esi		/* no error code */
 	call \do_sym
 	jmp error_exit		/* %ebx: no swapgs flag */
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 .macro paranoidzeroentry sym do_sym
@@ -1038,15 +1360,25 @@ ENTRY(\sym)
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	call save_paranoid
 	TRACE_IRQS_OFF
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	movq %rsp,%rdi		/* pt_regs pointer */
 	xorl %esi,%esi		/* no error code */
 	call \do_sym
 	jmp paranoid_exit	/* %ebx: no swapgs flag */
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
-#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8)
+#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r12)
 .macro paranoidzeroentry_ist sym do_sym ist
 ENTRY(\sym)
 	INTR_FRAME
@@ -1056,14 +1388,30 @@ ENTRY(\sym)
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	call save_paranoid
 	TRACE_IRQS_OFF
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	movq %rsp,%rdi		/* pt_regs pointer */
 	xorl %esi,%esi		/* no error code */
+#ifdef CONFIG_SMP
+	imul $TSS_size, PER_CPU_VAR(cpu_number), %r12d
+	lea init_tss(%r12), %r12
+#else
+	lea init_tss(%rip), %r12
+#endif
 	subq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist)
 	call \do_sym
 	addq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist)
 	jmp paranoid_exit	/* %ebx: no swapgs flag */
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 .macro errorentry sym do_sym
@@ -1074,13 +1422,23 @@ ENTRY(\sym)
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	call error_entry
 	DEFAULT_FRAME 0
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	movq %rsp,%rdi			/* pt_regs pointer */
 	movq ORIG_RAX(%rsp),%rsi	/* get error code */
 	movq $-1,ORIG_RAX(%rsp)		/* no syscall to restart */
 	call \do_sym
 	jmp error_exit			/* %ebx: no swapgs flag */
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 	/* error code is on the stack already */
@@ -1093,13 +1451,23 @@ ENTRY(\sym)
 	call save_paranoid
 	DEFAULT_FRAME 0
 	TRACE_IRQS_OFF
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	movq %rsp,%rdi			/* pt_regs pointer */
 	movq ORIG_RAX(%rsp),%rsi	/* get error code */
 	movq $-1,ORIG_RAX(%rsp)		/* no syscall to restart */
 	call \do_sym
 	jmp paranoid_exit		/* %ebx: no swapgs flag */
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 zeroentry divide_error do_divide_error
@@ -1129,9 +1497,10 @@ gs_change:
 2:	mfence		/* workaround */
 	SWAPGS
 	popfq_cfi
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(native_load_gs_index)
+ENDPROC(native_load_gs_index)
 
 	.section __ex_table,"a"
 	.align 8
@@ -1153,13 +1522,14 @@ ENTRY(kernel_thread_helper)
 	 * Here we are in the child and the registers are set as they were
 	 * at kernel_thread() invocation in the parent.
 	 */
+	pax_force_fptr %rsi
 	call *%rsi
 	# exit
 	mov %eax, %edi
 	call do_exit
 	ud2			# padding for call trace
 	CFI_ENDPROC
-END(kernel_thread_helper)
+ENDPROC(kernel_thread_helper)
 
 /*
  * execve(). This function needs to use IRET, not SYSRET, to set up all state properly.
@@ -1186,11 +1556,11 @@ ENTRY(kernel_execve)
 	RESTORE_REST
 	testq %rax,%rax
 	je int_ret_from_sys_call
-	RESTORE_ARGS
 	UNFAKE_STACK_FRAME
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(kernel_execve)
+ENDPROC(kernel_execve)
 
 /* Call softirq on interrupt stack. Interrupts are off. */
 ENTRY(call_softirq)
@@ -1208,9 +1578,10 @@ ENTRY(call_softirq)
 	CFI_DEF_CFA_REGISTER	rsp
 	CFI_ADJUST_CFA_OFFSET   -8
 	decl PER_CPU_VAR(irq_count)
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(call_softirq)
+ENDPROC(call_softirq)
 
 #ifdef CONFIG_XEN
 zeroentry xen_hypervisor_callback xen_do_hypervisor_callback
@@ -1248,7 +1619,7 @@ ENTRY(xen_do_hypervisor_callback)   # do
 	decl PER_CPU_VAR(irq_count)
 	jmp  error_exit
 	CFI_ENDPROC
-END(xen_do_hypervisor_callback)
+ENDPROC(xen_do_hypervisor_callback)
 
 /*
  * Hypervisor uses this for application faults while it executes.
@@ -1307,7 +1678,7 @@ ENTRY(xen_failsafe_callback)
 	SAVE_ALL
 	jmp error_exit
 	CFI_ENDPROC
-END(xen_failsafe_callback)
+ENDPROC(xen_failsafe_callback)
 
 apicinterrupt XEN_HVM_EVTCHN_CALLBACK \
 	xen_hvm_callback_vector xen_evtchn_do_upcall
@@ -1356,16 +1727,31 @@ ENTRY(paranoid_exit)
 	TRACE_IRQS_OFF
 	testl %ebx,%ebx				/* swapgs needed? */
 	jnz paranoid_restore
-	testl $3,CS(%rsp)
+	testb $3,CS(%rsp)
 	jnz   paranoid_userspace
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel
+	TRACE_IRQS_IRETQ 0
+	SWAPGS_UNSAFE_STACK
+	RESTORE_ALL 8
+	pax_force_retaddr_bts
+	jmp irq_return
+#endif
 paranoid_swapgs:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel_user
+#else
+	pax_exit_kernel
+#endif
 	TRACE_IRQS_IRETQ 0
 	SWAPGS_UNSAFE_STACK
 	RESTORE_ALL 8
 	jmp irq_return
 paranoid_restore:
+	pax_exit_kernel
 	TRACE_IRQS_IRETQ 0
 	RESTORE_ALL 8
+	pax_force_retaddr_bts
 	jmp irq_return
 paranoid_userspace:
 	GET_THREAD_INFO(%rcx)
@@ -1394,7 +1780,7 @@ paranoid_schedule:
 	TRACE_IRQS_OFF
 	jmp paranoid_userspace
 	CFI_ENDPROC
-END(paranoid_exit)
+ENDPROC(paranoid_exit)
 
 /*
  * Exception entry point. This expects an error code/orig_rax on the stack.
@@ -1421,12 +1807,13 @@ ENTRY(error_entry)
 	movq_cfi r14, R14+8
 	movq_cfi r15, R15+8
 	xorl %ebx,%ebx
-	testl $3,CS+8(%rsp)
+	testb $3,CS+8(%rsp)
 	je error_kernelspace
 error_swapgs:
 	SWAPGS
 error_sti:
 	TRACE_IRQS_OFF
+	pax_force_retaddr_bts
 	ret
 
 /*
@@ -1453,7 +1840,7 @@ bstep_iret:
 	movq %rcx,RIP+8(%rsp)
 	jmp error_swapgs
 	CFI_ENDPROC
-END(error_entry)
+ENDPROC(error_entry)
 
 
 /* ebx:	no swapgs flag (1: don't need swapgs, 0: need it) */
@@ -1473,7 +1860,7 @@ ENTRY(error_exit)
 	jnz retint_careful
 	jmp retint_swapgs
 	CFI_ENDPROC
-END(error_exit)
+ENDPROC(error_exit)
 
 
 	/* runs on exception stack */
@@ -1485,6 +1872,16 @@ ENTRY(nmi)
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	call save_paranoid
 	DEFAULT_FRAME 0
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	/* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */
 	movq %rsp,%rdi
 	movq $-1,%rsi
@@ -1495,12 +1892,28 @@ ENTRY(nmi)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	testl %ebx,%ebx				/* swapgs needed? */
 	jnz nmi_restore
-	testl $3,CS(%rsp)
+	testb $3,CS(%rsp)
 	jnz nmi_userspace
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel
+	SWAPGS_UNSAFE_STACK
+	RESTORE_ALL 8
+	pax_force_retaddr_bts
+	jmp irq_return
+#endif
 nmi_swapgs:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel_user
+#else
+	pax_exit_kernel
+#endif
 	SWAPGS_UNSAFE_STACK
+	RESTORE_ALL 8
+	jmp irq_return
 nmi_restore:
+	pax_exit_kernel
 	RESTORE_ALL 8
+	pax_force_retaddr_bts
 	jmp irq_return
 nmi_userspace:
 	GET_THREAD_INFO(%rcx)
@@ -1529,14 +1942,14 @@ nmi_schedule:
 	jmp paranoid_exit
 	CFI_ENDPROC
 #endif
-END(nmi)
+ENDPROC(nmi)
 
 ENTRY(ignore_sysret)
 	CFI_STARTPROC
 	mov $-ENOSYS,%eax
 	sysret
 	CFI_ENDPROC
-END(ignore_sysret)
+ENDPROC(ignore_sysret)
 
 /*
  * End of kprobes section
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/ftrace.c linux-3.2.22-g-v/arch/x86/kernel/ftrace.c
--- linux-3.2.22/arch/x86/kernel/ftrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/ftrace.c	2012-07-11 20:20:37.053972140 +0200
@@ -126,7 +126,7 @@ static void *mod_code_ip;		/* holds the 
 static const void *mod_code_newcode;	/* holds the text to write to the IP */
 
 static unsigned nmi_wait_count;
-static atomic_t nmi_update_count = ATOMIC_INIT(0);
+static atomic_unchecked_t nmi_update_count = ATOMIC_INIT(0);
 
 int ftrace_arch_read_dyn_info(char *buf, int size)
 {
@@ -134,7 +134,7 @@ int ftrace_arch_read_dyn_info(char *buf,
 
 	r = snprintf(buf, size, "%u %u",
 		     nmi_wait_count,
-		     atomic_read(&nmi_update_count));
+		     atomic_read_unchecked(&nmi_update_count));
 	return r;
 }
 
@@ -177,8 +177,10 @@ void ftrace_nmi_enter(void)
 
 	if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) {
 		smp_rmb();
+		pax_open_kernel();
 		ftrace_mod_code();
-		atomic_inc(&nmi_update_count);
+		pax_close_kernel();
+		atomic_inc_unchecked(&nmi_update_count);
 	}
 	/* Must have previous changes seen before executions */
 	smp_mb();
@@ -271,6 +273,8 @@ ftrace_modify_code(unsigned long ip, uns
 {
 	unsigned char replaced[MCOUNT_INSN_SIZE];
 
+	ip = ktla_ktva(ip);
+
 	/*
 	 * Note: Due to modules and __init, code can
 	 *  disappear and change, we need to protect against faulting
@@ -327,7 +331,7 @@ int ftrace_update_ftrace_func(ftrace_fun
 	unsigned char old[MCOUNT_INSN_SIZE], *new;
 	int ret;
 
-	memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE);
+	memcpy(old, (void *)ktla_ktva((unsigned long)ftrace_call), MCOUNT_INSN_SIZE);
 	new = ftrace_call_replace(ip, (unsigned long)func);
 	ret = ftrace_modify_code(ip, old, new);
 
@@ -353,6 +357,8 @@ static int ftrace_mod_jmp(unsigned long 
 {
 	unsigned char code[MCOUNT_INSN_SIZE];
 
+	ip = ktla_ktva(ip);
+
 	if (probe_kernel_read(code, (void *)ip, MCOUNT_INSN_SIZE))
 		return -EFAULT;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/head32.c linux-3.2.22-g-v/arch/x86/kernel/head32.c
--- linux-3.2.22/arch/x86/kernel/head32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/head32.c	2012-07-11 20:20:37.057321254 +0200
@@ -19,6 +19,7 @@
 #include <asm/io_apic.h>
 #include <asm/bios_ebda.h>
 #include <asm/tlbflush.h>
+#include <asm/boot.h>
 
 static void __init i386_default_early_setup(void)
 {
@@ -33,7 +34,7 @@ void __init i386_start_kernel(void)
 {
 	memblock_init();
 
-	memblock_x86_reserve_range(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS");
+	memblock_x86_reserve_range(LOAD_PHYSICAL_ADDR, __pa_symbol(&__bss_stop), "TEXT DATA BSS");
 
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/head_32.S linux-3.2.22-g-v/arch/x86/kernel/head_32.S
--- linux-3.2.22/arch/x86/kernel/head_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/head_32.S	2012-07-11 20:20:37.057321254 +0200
@@ -25,6 +25,12 @@
 /* Physical address */
 #define pa(X) ((X) - __PAGE_OFFSET)
 
+#ifdef CONFIG_PAX_KERNEXEC
+#define ta(X) (X)
+#else
+#define ta(X) ((X) - __PAGE_OFFSET)
+#endif
+
 /*
  * References to members of the new_cpu_data structure.
  */
@@ -54,11 +60,7 @@
  * and small than max_low_pfn, otherwise will waste some page table entries
  */
 
-#if PTRS_PER_PMD > 1
-#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD)
-#else
-#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
-#endif
+#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE)
 
 /* Number of possible pages in the lowmem region */
 LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
@@ -77,6 +79,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_P
 RESERVE_BRK(pagetables, INIT_MAP_SIZE)
 
 /*
+ * Real beginning of normal "text" segment
+ */
+ENTRY(stext)
+ENTRY(_stext)
+
+/*
  * 32-bit kernel entrypoint; only used by the boot CPU.  On entry,
  * %esi points to the real-mode code as a 32-bit pointer.
  * CS and DS must be 4 GB flat segments, but we don't depend on
@@ -84,6 +92,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE)
  * can.
  */
 __HEAD
+
+#ifdef CONFIG_PAX_KERNEXEC
+	jmp startup_32
+/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */
+.fill PAGE_SIZE-5,1,0xcc
+#endif
+
 ENTRY(startup_32)
 	movl pa(stack_start),%ecx
 	
@@ -105,6 +120,57 @@ ENTRY(startup_32)
 2:
 	leal -__PAGE_OFFSET(%ecx),%esp
 
+#ifdef CONFIG_SMP
+	movl $pa(cpu_gdt_table),%edi
+	movl $__per_cpu_load,%eax
+	movw %ax,__KERNEL_PERCPU + 2(%edi)
+	rorl $16,%eax
+	movb %al,__KERNEL_PERCPU + 4(%edi)
+	movb %ah,__KERNEL_PERCPU + 7(%edi)
+	movl $__per_cpu_end - 1,%eax
+	subl $__per_cpu_start,%eax
+	movw %ax,__KERNEL_PERCPU + 0(%edi)
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	movl $NR_CPUS,%ecx
+	movl $pa(cpu_gdt_table),%edi
+1:
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi)
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi)
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi)
+	addl $PAGE_SIZE_asm,%edi
+	loop 1b
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	movl $pa(boot_gdt),%edi
+	movl $__LOAD_PHYSICAL_ADDR,%eax
+	movw %ax,__BOOT_CS + 2(%edi)
+	rorl $16,%eax
+	movb %al,__BOOT_CS + 4(%edi)
+	movb %ah,__BOOT_CS + 7(%edi)
+	rorl $16,%eax
+
+	ljmp $(__BOOT_CS),$1f
+1:
+
+	movl $NR_CPUS,%ecx
+	movl $pa(cpu_gdt_table),%edi
+	addl $__PAGE_OFFSET,%eax
+1:
+	movw %ax,__KERNEL_CS + 2(%edi)
+	movw %ax,__KERNEXEC_KERNEL_CS + 2(%edi)
+	rorl $16,%eax
+	movb %al,__KERNEL_CS + 4(%edi)
+	movb %al,__KERNEXEC_KERNEL_CS + 4(%edi)
+	movb %ah,__KERNEL_CS + 7(%edi)
+	movb %ah,__KERNEXEC_KERNEL_CS + 7(%edi)
+	rorl $16,%eax
+	addl $PAGE_SIZE_asm,%edi
+	loop 1b
+#endif
+
 /*
  * Clear BSS first so that there are no surprises...
  */
@@ -195,8 +261,11 @@ ENTRY(startup_32)
 	movl %eax, pa(max_pfn_mapped)
 
 	/* Do early initialization of the fixmap area */
-	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
-	movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#ifdef CONFIG_COMPAT_VDSO
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#else
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#endif
 #else	/* Not PAE */
 
 page_pde_offset = (__PAGE_OFFSET >> 20);
@@ -226,8 +295,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
 	movl %eax, pa(max_pfn_mapped)
 
 	/* Do early initialization of the fixmap area */
-	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
-	movl %eax,pa(initial_page_table+0xffc)
+#ifdef CONFIG_COMPAT_VDSO
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_page_table+0xffc)
+#else
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_page_table+0xffc)
+#endif
 #endif
 
 #ifdef CONFIG_PARAVIRT
@@ -241,9 +313,7 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
 	cmpl $num_subarch_entries, %eax
 	jae bad_subarch
 
-	movl pa(subarch_entries)(,%eax,4), %eax
-	subl $__PAGE_OFFSET, %eax
-	jmp *%eax
+	jmp *pa(subarch_entries)(,%eax,4)
 
 bad_subarch:
 WEAK(lguest_entry)
@@ -255,10 +325,10 @@ WEAK(xen_entry)
 	__INITDATA
 
 subarch_entries:
-	.long default_entry		/* normal x86/PC */
-	.long lguest_entry		/* lguest hypervisor */
-	.long xen_entry			/* Xen hypervisor */
-	.long default_entry		/* Moorestown MID */
+	.long ta(default_entry)		/* normal x86/PC */
+	.long ta(lguest_entry)		/* lguest hypervisor */
+	.long ta(xen_entry)		/* Xen hypervisor */
+	.long ta(default_entry)		/* Moorestown MID */
 num_subarch_entries = (. - subarch_entries) / 4
 .previous
 #else
@@ -312,6 +382,7 @@ default_entry:
 	orl %edx,%eax
 	movl %eax,%cr4
 
+#ifdef CONFIG_X86_PAE
 	testb $X86_CR4_PAE, %al		# check if PAE is enabled
 	jz 6f
 
@@ -340,6 +411,9 @@ default_entry:
 	/* Make changes effective */
 	wrmsr
 
+	btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4)
+#endif
+
 6:
 
 /*
@@ -443,7 +517,7 @@ is386:	movl $2,%ecx		# set MP
 1:	movl $(__KERNEL_DS),%eax	# reload all the segment registers
 	movl %eax,%ss			# after changing gdt.
 
-	movl $(__USER_DS),%eax		# DS/ES contains default USER segment
+#	movl $(__KERNEL_DS),%eax	# DS/ES contains default KERNEL segment
 	movl %eax,%ds
 	movl %eax,%es
 
@@ -457,15 +531,22 @@ is386:	movl $2,%ecx		# set MP
 	 */
 	cmpb $0,ready
 	jne 1f
-	movl $gdt_page,%eax
+	movl $cpu_gdt_table,%eax
 	movl $stack_canary,%ecx
+#ifdef CONFIG_SMP
+	addl $__per_cpu_load,%ecx
+#endif
 	movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax)
 	shrl $16, %ecx
 	movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax)
 	movb %ch, 8 * GDT_ENTRY_STACK_CANARY + 7(%eax)
 1:
-#endif
 	movl $(__KERNEL_STACK_CANARY),%eax
+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
+	movl $(__USER_DS),%eax
+#else
+	xorl %eax,%eax
+#endif
 	movl %eax,%gs
 
 	xorl %eax,%eax			# Clear LDT
@@ -558,22 +639,22 @@ early_page_fault:
 	jmp early_fault
 
 early_fault:
-	cld
 #ifdef CONFIG_PRINTK
+	cmpl $1,%ss:early_recursion_flag
+	je hlt_loop
+	incl %ss:early_recursion_flag
+	cld
 	pusha
 	movl $(__KERNEL_DS),%eax
 	movl %eax,%ds
 	movl %eax,%es
-	cmpl $2,early_recursion_flag
-	je hlt_loop
-	incl early_recursion_flag
 	movl %cr2,%eax
 	pushl %eax
 	pushl %edx		/* trapno */
 	pushl $fault_msg
 	call printk
+;	call dump_stack
 #endif
-	call dump_stack
 hlt_loop:
 	hlt
 	jmp hlt_loop
@@ -581,8 +662,11 @@ hlt_loop:
 /* This is the default interrupt "handler" :-) */
 	ALIGN
 ignore_int:
-	cld
 #ifdef CONFIG_PRINTK
+	cmpl $2,%ss:early_recursion_flag
+	je hlt_loop
+	incl %ss:early_recursion_flag
+	cld
 	pushl %eax
 	pushl %ecx
 	pushl %edx
@@ -591,9 +675,6 @@ ignore_int:
 	movl $(__KERNEL_DS),%eax
 	movl %eax,%ds
 	movl %eax,%es
-	cmpl $2,early_recursion_flag
-	je hlt_loop
-	incl early_recursion_flag
 	pushl 16(%esp)
 	pushl 24(%esp)
 	pushl 32(%esp)
@@ -622,29 +703,43 @@ ENTRY(initial_code)
 /*
  * BSS section
  */
-__PAGE_ALIGNED_BSS
-	.align PAGE_SIZE
 #ifdef CONFIG_X86_PAE
+.section .initial_pg_pmd,"a",@progbits
 initial_pg_pmd:
 	.fill 1024*KPMDS,4,0
 #else
+.section .initial_page_table,"a",@progbits
 ENTRY(initial_page_table)
 	.fill 1024,4,0
 #endif
+.section .initial_pg_fixmap,"a",@progbits
 initial_pg_fixmap:
 	.fill 1024,4,0
+.section .empty_zero_page,"a",@progbits
 ENTRY(empty_zero_page)
 	.fill 4096,1,0
+.section .swapper_pg_dir,"a",@progbits
 ENTRY(swapper_pg_dir)
+#ifdef CONFIG_X86_PAE
+	.fill 4,8,0
+#else
 	.fill 1024,4,0
+#endif
+
+/*
+ * The IDT has to be page-aligned to simplify the Pentium
+ * F0 0F bug workaround.. We have a special link segment
+ * for this.
+ */
+.section .idt,"a",@progbits
+ENTRY(idt_table)
+	.fill 256,8,0
 
 /*
  * This starts the data section.
  */
 #ifdef CONFIG_X86_PAE
-__PAGE_ALIGNED_DATA
-	/* Page-aligned for the benefit of paravirt? */
-	.align PAGE_SIZE
+.section .initial_page_table,"a",@progbits
 ENTRY(initial_page_table)
 	.long	pa(initial_pg_pmd+PGD_IDENT_ATTR),0	/* low identity map */
 # if KPMDS == 3
@@ -663,18 +758,27 @@ ENTRY(initial_page_table)
 #  error "Kernel PMDs should be 1, 2 or 3"
 # endif
 	.align PAGE_SIZE		/* needs to be page-sized too */
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+ENTRY(cpu_pgd)
+	.rept NR_CPUS
+	.fill	4,8,0
+	.endr
+#endif
+
 #endif
 
 .data
 .balign 4
 ENTRY(stack_start)
-	.long init_thread_union+THREAD_SIZE
+	.long init_thread_union+THREAD_SIZE-8
+
+ready:	.byte 0
 
+.section .rodata,"a",@progbits
 early_recursion_flag:
 	.long 0
 
-ready:	.byte 0
-
 int_msg:
 	.asciz "Unknown interrupt or fault at: %p %p %p\n"
 
@@ -707,7 +811,7 @@ fault_msg:
 	.word 0				# 32 bit align gdt_desc.address
 boot_gdt_descr:
 	.word __BOOT_DS+7
-	.long boot_gdt - __PAGE_OFFSET
+	.long pa(boot_gdt)
 
 	.word 0				# 32-bit align idt_desc.address
 idt_descr:
@@ -718,7 +822,7 @@ idt_descr:
 	.word 0				# 32 bit align gdt_desc.address
 ENTRY(early_gdt_descr)
 	.word GDT_ENTRIES*8-1
-	.long gdt_page			/* Overwritten for secondary CPUs */
+	.long cpu_gdt_table		/* Overwritten for secondary CPUs */
 
 /*
  * The boot_gdt must mirror the equivalent in setup.S and is
@@ -727,5 +831,65 @@ ENTRY(early_gdt_descr)
 	.align L1_CACHE_BYTES
 ENTRY(boot_gdt)
 	.fill GDT_ENTRY_BOOT_CS,8,0
-	.quad 0x00cf9a000000ffff	/* kernel 4GB code at 0x00000000 */
-	.quad 0x00cf92000000ffff	/* kernel 4GB data at 0x00000000 */
+	.quad 0x00cf9b000000ffff	/* kernel 4GB code at 0x00000000 */
+	.quad 0x00cf93000000ffff	/* kernel 4GB data at 0x00000000 */
+
+	.align PAGE_SIZE_asm
+ENTRY(cpu_gdt_table)
+	.rept NR_CPUS
+	.quad 0x0000000000000000	/* NULL descriptor */
+	.quad 0x0000000000000000	/* 0x0b reserved */
+	.quad 0x0000000000000000	/* 0x13 reserved */
+	.quad 0x0000000000000000	/* 0x1b reserved */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.quad 0x00cf9b000000ffff	/* 0x20 alternate kernel 4GB code at 0x00000000 */
+#else
+	.quad 0x0000000000000000	/* 0x20 unused */
+#endif
+
+	.quad 0x0000000000000000	/* 0x28 unused */
+	.quad 0x0000000000000000	/* 0x33 TLS entry 1 */
+	.quad 0x0000000000000000	/* 0x3b TLS entry 2 */
+	.quad 0x0000000000000000	/* 0x43 TLS entry 3 */
+	.quad 0x0000000000000000	/* 0x4b reserved */
+	.quad 0x0000000000000000	/* 0x53 reserved */
+	.quad 0x0000000000000000	/* 0x5b reserved */
+
+	.quad 0x00cf9b000000ffff	/* 0x60 kernel 4GB code at 0x00000000 */
+	.quad 0x00cf93000000ffff	/* 0x68 kernel 4GB data at 0x00000000 */
+	.quad 0x00cffb000000ffff	/* 0x73 user 4GB code at 0x00000000 */
+	.quad 0x00cff3000000ffff	/* 0x7b user 4GB data at 0x00000000 */
+
+	.quad 0x0000000000000000	/* 0x80 TSS descriptor */
+	.quad 0x0000000000000000	/* 0x88 LDT descriptor */
+
+	/*
+	 * Segments used for calling PnP BIOS have byte granularity.
+	 * The code segments and data segments have fixed 64k limits,
+	 * the transfer segment sizes are set at run time.
+	 */
+	.quad 0x00409b000000ffff	/* 0x90 32-bit code */
+	.quad 0x00009b000000ffff	/* 0x98 16-bit code */
+	.quad 0x000093000000ffff	/* 0xa0 16-bit data */
+	.quad 0x0000930000000000	/* 0xa8 16-bit data */
+	.quad 0x0000930000000000	/* 0xb0 16-bit data */
+
+	/*
+	 * The APM segments have byte granularity and their bases
+	 * are set at run time.  All have 64k limits.
+	 */
+	.quad 0x00409b000000ffff	/* 0xb8 APM CS    code */
+	.quad 0x00009b000000ffff	/* 0xc0 APM CS 16 code (16 bit) */
+	.quad 0x004093000000ffff	/* 0xc8 APM DS    data */
+
+	.quad 0x00c0930000000000	/* 0xd0 - ESPFIX SS */
+	.quad 0x0040930000000000	/* 0xd8 - PERCPU */
+	.quad 0x0040910000000017	/* 0xe0 - STACK_CANARY */
+	.quad 0x0000000000000000	/* 0xe8 - PCIBIOS_CS */
+	.quad 0x0000000000000000	/* 0xf0 - PCIBIOS_DS */
+	.quad 0x0000000000000000	/* 0xf8 - GDT entry 31: double-fault TSS */
+
+	/* Be sure this is zeroed to avoid false validations in Xen */
+	.fill PAGE_SIZE_asm - GDT_SIZE,1,0
+	.endr
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/head_64.S linux-3.2.22-g-v/arch/x86/kernel/head_64.S
--- linux-3.2.22/arch/x86/kernel/head_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/head_64.S	2012-07-11 20:20:37.057321254 +0200
@@ -19,6 +19,8 @@
 #include <asm/cache.h>
 #include <asm/processor-flags.h>
 #include <asm/percpu.h>
+#include <asm/cpufeature.h>
+#include <asm/alternative-asm.h>
 
 #ifdef CONFIG_PARAVIRT
 #include <asm/asm-offsets.h>
@@ -38,6 +40,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET
 L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET)
 L4_START_KERNEL = pgd_index(__START_KERNEL_map)
 L3_START_KERNEL = pud_index(__START_KERNEL_map)
+L4_VMALLOC_START = pgd_index(VMALLOC_START)
+L3_VMALLOC_START = pud_index(VMALLOC_START)
+L4_VMALLOC_END = pgd_index(VMALLOC_END)
+L3_VMALLOC_END = pud_index(VMALLOC_END)
+L4_VMEMMAP_START = pgd_index(VMEMMAP_START)
+L3_VMEMMAP_START = pud_index(VMEMMAP_START)
 
 	.text
 	__HEAD
@@ -85,35 +93,23 @@ startup_64:
 	 */
 	addq	%rbp, init_level4_pgt + 0(%rip)
 	addq	%rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip)
 	addq	%rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip)
 
 	addq	%rbp, level3_ident_pgt + 0(%rip)
+#ifndef CONFIG_XEN
+	addq	%rbp, level3_ident_pgt + 8(%rip)
+#endif
 
-	addq	%rbp, level3_kernel_pgt + (510*8)(%rip)
-	addq	%rbp, level3_kernel_pgt + (511*8)(%rip)
-
-	addq	%rbp, level2_fixmap_pgt + (506*8)(%rip)
-
-	/* Add an Identity mapping if I am above 1G */
-	leaq	_text(%rip), %rdi
-	andq	$PMD_PAGE_MASK, %rdi
-
-	movq	%rdi, %rax
-	shrq	$PUD_SHIFT, %rax
-	andq	$(PTRS_PER_PUD - 1), %rax
-	jz	ident_complete
+	addq	%rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip)
 
-	leaq	(level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx
-	leaq	level3_ident_pgt(%rip), %rbx
-	movq	%rdx, 0(%rbx, %rax, 8)
+	addq	%rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip)
+	addq	%rbp, level3_kernel_pgt + (L3_START_KERNEL*8+8)(%rip)
 
-	movq	%rdi, %rax
-	shrq	$PMD_SHIFT, %rax
-	andq	$(PTRS_PER_PMD - 1), %rax
-	leaq	__PAGE_KERNEL_IDENT_LARGE_EXEC(%rdi), %rdx
-	leaq	level2_spare_pgt(%rip), %rbx
-	movq	%rdx, 0(%rbx, %rax, 8)
-ident_complete:
+	addq	%rbp, level2_fixmap_pgt + (506*8)(%rip)
+	addq	%rbp, level2_fixmap_pgt + (507*8)(%rip)
 
 	/*
 	 * Fixup the kernel text+data virtual addresses. Note that
@@ -160,8 +156,8 @@ ENTRY(secondary_startup_64)
 	 * after the boot processor executes this code.
 	 */
 
-	/* Enable PAE mode and PGE */
-	movl	$(X86_CR4_PAE | X86_CR4_PGE), %eax
+	/* Enable PAE mode and PSE/PGE */
+	movl	$(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax
 	movq	%rax, %cr4
 
 	/* Setup early boot stage 4 level pagetables. */
@@ -183,9 +179,17 @@ ENTRY(secondary_startup_64)
 	movl	$MSR_EFER, %ecx
 	rdmsr
 	btsl	$_EFER_SCE, %eax	/* Enable System Call */
-	btl	$20,%edi		/* No Execute supported? */
+	btl	$(X86_FEATURE_NX & 31),%edi	/* No Execute supported? */
 	jnc     1f
 	btsl	$_EFER_NX, %eax
+	leaq	init_level4_pgt(%rip), %rdi
+#ifndef CONFIG_EFI
+	btsq	$_PAGE_BIT_NX, 8*L4_PAGE_OFFSET(%rdi)
+#endif
+	btsq	$_PAGE_BIT_NX, 8*L4_VMALLOC_START(%rdi)
+	btsq	$_PAGE_BIT_NX, 8*L4_VMALLOC_END(%rdi)
+	btsq	$_PAGE_BIT_NX, 8*L4_VMEMMAP_START(%rdi)
+	btsq	$_PAGE_BIT_NX, __supported_pte_mask(%rip)
 1:	wrmsr				/* Make changes effective */
 
 	/* Setup cr0 */
@@ -247,6 +251,7 @@ ENTRY(secondary_startup_64)
 	 * jump.  In addition we need to ensure %cs is set so we make this
 	 * a far return.
 	 */
+	pax_set_fptr_mask
 	movq	initial_code(%rip),%rax
 	pushq	$0		# fake return address to stop unwinder
 	pushq	$__KERNEL_CS	# set correct cs
@@ -269,7 +274,7 @@ ENTRY(secondary_startup_64)
 bad_address:
 	jmp bad_address
 
-	.section ".init.text","ax"
+	__INIT
 #ifdef CONFIG_EARLY_PRINTK
 	.globl early_idt_handlers
 early_idt_handlers:
@@ -314,18 +319,23 @@ ENTRY(early_idt_handler)
 #endif /* EARLY_PRINTK */
 1:	hlt
 	jmp 1b
+	.previous
 
 #ifdef CONFIG_EARLY_PRINTK
+	__INITDATA
 early_recursion_flag:
 	.long 0
+	.previous
 
+	.section .rodata,"a",@progbits
 early_idt_msg:
 	.asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n"
 early_idt_ripmsg:
 	.asciz "RIP %s\n"
-#endif /* CONFIG_EARLY_PRINTK */
 	.previous
+#endif /* CONFIG_EARLY_PRINTK */
 
+	.section .rodata,"a",@progbits
 #define NEXT_PAGE(name) \
 	.balign	PAGE_SIZE; \
 ENTRY(name)
@@ -338,7 +348,6 @@ ENTRY(name)
 	i = i + 1 ;					\
 	.endr
 
-	.data
 	/*
 	 * This default setting generates an ident mapping at address 0x100000
 	 * and a mapping for the kernel that precisely maps virtual address
@@ -349,13 +358,41 @@ NEXT_PAGE(init_level4_pgt)
 	.quad	level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.org	init_level4_pgt + L4_PAGE_OFFSET*8, 0
 	.quad	level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMALLOC_START*8, 0
+	.quad	level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMALLOC_END*8, 0
+	.quad	level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMEMMAP_START*8, 0
+	.quad	level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.org	init_level4_pgt + L4_START_KERNEL*8, 0
 	/* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
 	.quad	level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+NEXT_PAGE(cpu_pgd)
+	.rept NR_CPUS
+	.fill	512,8,0
+	.endr
+#endif
+
 NEXT_PAGE(level3_ident_pgt)
 	.quad	level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
+#ifdef CONFIG_XEN
 	.fill	511,8,0
+#else
+	.quad	level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE
+	.fill	510,8,0
+#endif
+
+NEXT_PAGE(level3_vmalloc_start_pgt)
+	.fill	512,8,0
+
+NEXT_PAGE(level3_vmalloc_end_pgt)
+	.fill	512,8,0
+
+NEXT_PAGE(level3_vmemmap_pgt)
+	.fill	L3_VMEMMAP_START,8,0
+	.quad	level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
 
 NEXT_PAGE(level3_kernel_pgt)
 	.fill	L3_START_KERNEL,8,0
@@ -363,20 +400,23 @@ NEXT_PAGE(level3_kernel_pgt)
 	.quad	level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.quad	level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
 
+NEXT_PAGE(level2_vmemmap_pgt)
+	.fill	512,8,0
+
 NEXT_PAGE(level2_fixmap_pgt)
-	.fill	506,8,0
-	.quad	level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
-	/* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
-	.fill	5,8,0
+	.fill	507,8,0
+	.quad	level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE
+	/* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */
+	.fill	4,8,0
 
-NEXT_PAGE(level1_fixmap_pgt)
+NEXT_PAGE(level1_vsyscall_pgt)
 	.fill	512,8,0
 
-NEXT_PAGE(level2_ident_pgt)
-	/* Since I easily can, map the first 1G.
+	/* Since I easily can, map the first 2G.
 	 * Don't set NX because code runs from these pages.
 	 */
-	PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD)
+NEXT_PAGE(level2_ident_pgt)
+	PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD)
 
 NEXT_PAGE(level2_kernel_pgt)
 	/*
@@ -389,33 +429,55 @@ NEXT_PAGE(level2_kernel_pgt)
 	 *  If you want to increase this then increase MODULES_VADDR
 	 *  too.)
 	 */
-	PMDS(0, __PAGE_KERNEL_LARGE_EXEC,
-		KERNEL_IMAGE_SIZE/PMD_SIZE)
-
-NEXT_PAGE(level2_spare_pgt)
-	.fill   512, 8, 0
+	PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE/PMD_SIZE)
 
 #undef PMDS
 #undef NEXT_PAGE
 
-	.data
+	.align PAGE_SIZE
+ENTRY(cpu_gdt_table)
+	.rept NR_CPUS
+	.quad	0x0000000000000000	/* NULL descriptor */
+	.quad	0x00cf9b000000ffff	/* __KERNEL32_CS */
+	.quad	0x00af9b000000ffff	/* __KERNEL_CS */
+	.quad	0x00cf93000000ffff	/* __KERNEL_DS */
+	.quad	0x00cffb000000ffff	/* __USER32_CS */
+	.quad	0x00cff3000000ffff	/* __USER_DS, __USER32_DS  */
+	.quad	0x00affb000000ffff	/* __USER_CS */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.quad	0x00af9b000000ffff	/* __KERNEXEC_KERNEL_CS */
+#else
+	.quad	0x0			/* unused */
+#endif
+
+	.quad	0,0			/* TSS */
+	.quad	0,0			/* LDT */
+	.quad	0,0,0			/* three TLS descriptors */
+	.quad	0x0000f40000000000	/* node/CPU stored in limit */
+	/* asm/segment.h:GDT_ENTRIES must match this */
+
+	/* zero the remaining page */
+	.fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0
+	.endr
+
 	.align 16
 	.globl early_gdt_descr
 early_gdt_descr:
 	.word	GDT_ENTRIES*8-1
 early_gdt_descr_base:
-	.quad	INIT_PER_CPU_VAR(gdt_page)
+	.quad	cpu_gdt_table
 
 ENTRY(phys_base)
 	/* This must match the first entry in level2_kernel_pgt */
 	.quad   0x0000000000000000
 
 #include "../../x86/xen/xen-head.S"
-	
-	.section .bss, "aw", @nobits
+
+	.section .rodata,"a",@progbits
 	.align L1_CACHE_BYTES
 ENTRY(idt_table)
-	.skip IDT_ENTRIES * 16
+	.fill 512,8,0
 
 	__PAGE_ALIGNED_BSS
 	.align PAGE_SIZE
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/i386_ksyms_32.c linux-3.2.22-g-v/arch/x86/kernel/i386_ksyms_32.c
--- linux-3.2.22/arch/x86/kernel/i386_ksyms_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/i386_ksyms_32.c	2012-07-11 20:20:37.057321254 +0200
@@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void);
 EXPORT_SYMBOL(cmpxchg8b_emu);
 #endif
 
+EXPORT_SYMBOL_GPL(cpu_gdt_table);
+
 /* Networking helper routines. */
 EXPORT_SYMBOL(csum_partial_copy_generic);
+EXPORT_SYMBOL(csum_partial_copy_generic_to_user);
+EXPORT_SYMBOL(csum_partial_copy_generic_from_user);
 
 EXPORT_SYMBOL(__get_user_1);
 EXPORT_SYMBOL(__get_user_2);
@@ -36,3 +40,7 @@ EXPORT_SYMBOL(strstr);
 
 EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(empty_zero_page);
+
+#ifdef CONFIG_PAX_KERNEXEC
+EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR);
+#endif
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/i8259.c linux-3.2.22-g-v/arch/x86/kernel/i8259.c
--- linux-3.2.22/arch/x86/kernel/i8259.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/i8259.c	2012-07-11 20:20:37.057321254 +0200
@@ -210,7 +210,7 @@ spurious_8259A_irq:
 			       "spurious 8259A interrupt: IRQ%d.\n", irq);
 			spurious_irq_mask |= irqmask;
 		}
-		atomic_inc(&irq_err_count);
+		atomic_inc_unchecked(&irq_err_count);
 		/*
 		 * Theoretically we do not have to handle this IRQ,
 		 * but in Linux this does not cause problems and is
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/init_task.c linux-3.2.22-g-v/arch/x86/kernel/init_task.c
--- linux-3.2.22/arch/x86/kernel/init_task.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/init_task.c	2012-07-11 20:20:37.060644256 +0200
@@ -20,8 +20,7 @@ static struct sighand_struct init_sighan
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */
-union thread_union init_thread_union __init_task_data =
-	{ INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data;
 
 /*
  * Initial task structure.
@@ -38,5 +37,5 @@ EXPORT_SYMBOL(init_task);
  * section. Since TSS's are completely CPU-local, we want them
  * on exact cacheline boundaries, to eliminate cacheline ping-pong.
  */
-DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
-
+struct tss_struct init_tss[NR_CPUS] ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS };
+EXPORT_SYMBOL(init_tss);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/ioport.c linux-3.2.22-g-v/arch/x86/kernel/ioport.c
--- linux-3.2.22/arch/x86/kernel/ioport.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/ioport.c	2012-07-11 20:20:37.060644256 +0200
@@ -6,6 +6,7 @@
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/capability.h>
+#include <linux/security.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/ioport.h>
@@ -28,6 +29,12 @@ asmlinkage long sys_ioperm(unsigned long
 
 	if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
 		return -EINVAL;
+#ifdef CONFIG_GRKERNSEC_IO
+	if (turn_on && grsec_disable_privio) {
+		gr_handle_ioperm();
+		return -EPERM;
+	}
+#endif
 	if (turn_on && !capable(CAP_SYS_RAWIO))
 		return -EPERM;
 
@@ -54,7 +61,7 @@ asmlinkage long sys_ioperm(unsigned long
 	 * because the ->io_bitmap_max value must match the bitmap
 	 * contents:
 	 */
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 
 	if (turn_on)
 		bitmap_clear(t->io_bitmap_ptr, from, num);
@@ -102,6 +109,12 @@ long sys_iopl(unsigned int level, struct
 		return -EINVAL;
 	/* Trying to gain more privileges? */
 	if (level > old) {
+#ifdef CONFIG_GRKERNSEC_IO
+		if (grsec_disable_privio) {
+			gr_handle_iopl();
+			return -EPERM;
+		}
+#endif
 		if (!capable(CAP_SYS_RAWIO))
 			return -EPERM;
 	}
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/irq_32.c linux-3.2.22-g-v/arch/x86/kernel/irq_32.c
--- linux-3.2.22/arch/x86/kernel/irq_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/irq_32.c	2012-07-11 20:20:37.060644256 +0200
@@ -36,7 +36,7 @@ static int check_stack_overflow(void)
 	__asm__ __volatile__("andl %%esp,%0" :
 			     "=r" (sp) : "0" (THREAD_SIZE - 1));
 
-	return sp < (sizeof(struct thread_info) + STACK_WARN);
+	return sp < STACK_WARN;
 }
 
 static void print_stack_overflow(void)
@@ -54,8 +54,8 @@ static inline void print_stack_overflow(
  * per-CPU IRQ handling contexts (thread information and stack)
  */
 union irq_ctx {
-	struct thread_info      tinfo;
-	u32                     stack[THREAD_SIZE/sizeof(u32)];
+	unsigned long		previous_esp;
+	u32			stack[THREAD_SIZE/sizeof(u32)];
 } __attribute__((aligned(THREAD_SIZE)));
 
 static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx);
@@ -75,10 +75,9 @@ static void call_on_stack(void *func, vo
 static inline int
 execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
 {
-	union irq_ctx *curctx, *irqctx;
+	union irq_ctx *irqctx;
 	u32 *isp, arg1, arg2;
 
-	curctx = (union irq_ctx *) current_thread_info();
 	irqctx = __this_cpu_read(hardirq_ctx);
 
 	/*
@@ -87,21 +86,16 @@ execute_on_irq_stack(int overflow, struc
 	 * handler) we can't do that and just have to keep using the
 	 * current stack (which is the irq stack already after all)
 	 */
-	if (unlikely(curctx == irqctx))
+	if (unlikely((void *)current_stack_pointer - (void *)irqctx < THREAD_SIZE))
 		return 0;
 
 	/* build the stack frame on the IRQ stack */
-	isp = (u32 *) ((char *)irqctx + sizeof(*irqctx));
-	irqctx->tinfo.task = curctx->tinfo.task;
-	irqctx->tinfo.previous_esp = current_stack_pointer;
+	isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8);
+	irqctx->previous_esp = current_stack_pointer;
 
-	/*
-	 * Copy the softirq bits in preempt_count so that the
-	 * softirq checks work in the hardirq context.
-	 */
-	irqctx->tinfo.preempt_count =
-		(irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
-		(curctx->tinfo.preempt_count & SOFTIRQ_MASK);
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(MAKE_MM_SEG(0));
+#endif
 
 	if (unlikely(overflow))
 		call_on_stack(print_stack_overflow, isp);
@@ -113,6 +107,11 @@ execute_on_irq_stack(int overflow, struc
 		     :  "0" (irq),   "1" (desc),  "2" (isp),
 			"D" (desc->handle_irq)
 		     : "memory", "cc", "ecx");
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 	return 1;
 }
 
@@ -121,29 +120,11 @@ execute_on_irq_stack(int overflow, struc
  */
 void __cpuinit irq_ctx_init(int cpu)
 {
-	union irq_ctx *irqctx;
-
 	if (per_cpu(hardirq_ctx, cpu))
 		return;
 
-	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREAD_FLAGS,
-					       THREAD_ORDER));
-	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
-	irqctx->tinfo.cpu		= cpu;
-	irqctx->tinfo.preempt_count	= HARDIRQ_OFFSET;
-	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);
-
-	per_cpu(hardirq_ctx, cpu) = irqctx;
-
-	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREAD_FLAGS,
-					       THREAD_ORDER));
-	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
-	irqctx->tinfo.cpu		= cpu;
-	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);
-
-	per_cpu(softirq_ctx, cpu) = irqctx;
+	per_cpu(hardirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER));
+	per_cpu(softirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER));
 
 	printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n",
 	       cpu, per_cpu(hardirq_ctx, cpu),  per_cpu(softirq_ctx, cpu));
@@ -152,7 +133,6 @@ void __cpuinit irq_ctx_init(int cpu)
 asmlinkage void do_softirq(void)
 {
 	unsigned long flags;
-	struct thread_info *curctx;
 	union irq_ctx *irqctx;
 	u32 *isp;
 
@@ -162,15 +142,22 @@ asmlinkage void do_softirq(void)
 	local_irq_save(flags);
 
 	if (local_softirq_pending()) {
-		curctx = current_thread_info();
 		irqctx = __this_cpu_read(softirq_ctx);
-		irqctx->tinfo.task = curctx->task;
-		irqctx->tinfo.previous_esp = current_stack_pointer;
+		irqctx->previous_esp = current_stack_pointer;
 
 		/* build the stack frame on the softirq stack */
-		isp = (u32 *) ((char *)irqctx + sizeof(*irqctx));
+		isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		__set_fs(MAKE_MM_SEG(0));
+#endif
 
 		call_on_stack(__do_softirq, isp);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		__set_fs(current_thread_info()->addr_limit);
+#endif
+
 		/*
 		 * Shouldn't happen, we returned above if in_interrupt():
 		 */
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/irq_64.c linux-3.2.22-g-v/arch/x86/kernel/irq_64.c
--- linux-3.2.22/arch/x86/kernel/irq_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/irq_64.c	2012-07-11 20:20:37.060644256 +0200
@@ -38,7 +38,7 @@ static inline void stack_overflow_check(
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
 	u64 curbase = (u64)task_stack_page(current);
 
-	if (user_mode_vm(regs))
+	if (user_mode(regs))
 		return;
 
 	WARN_ONCE(regs->sp >= curbase &&
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/irq.c linux-3.2.22-g-v/arch/x86/kernel/irq.c
--- linux-3.2.22/arch/x86/kernel/irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/irq.c	2012-07-11 20:20:37.060644256 +0200
@@ -18,7 +18,7 @@
 #include <asm/mce.h>
 #include <asm/hw_irq.h>
 
-atomic_t irq_err_count;
+atomic_unchecked_t irq_err_count;
 
 /* Function pointer for generic interrupt vector handling */
 void (*x86_platform_ipi_callback)(void) = NULL;
@@ -117,9 +117,9 @@ int arch_show_interrupts(struct seq_file
 		seq_printf(p, "%10u ", per_cpu(mce_poll_count, j));
 	seq_printf(p, "  Machine check polls\n");
 #endif
-	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
+	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)
-	seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
+	seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count));
 #endif
 	return 0;
 }
@@ -159,10 +159,10 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 
 u64 arch_irq_stat(void)
 {
-	u64 sum = atomic_read(&irq_err_count);
+	u64 sum = atomic_read_unchecked(&irq_err_count);
 
 #ifdef CONFIG_X86_IO_APIC
-	sum += atomic_read(&irq_mis_count);
+	sum += atomic_read_unchecked(&irq_mis_count);
 #endif
 	return sum;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/kdebugfs.c linux-3.2.22-g-v/arch/x86/kernel/kdebugfs.c
--- linux-3.2.22/arch/x86/kernel/kdebugfs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/kdebugfs.c	2012-07-11 20:20:37.060644256 +0200
@@ -28,6 +28,8 @@ struct setup_data_node {
 };
 
 static ssize_t setup_data_read(struct file *file, char __user *user_buf,
+			       size_t count, loff_t *ppos) __size_overflow(3);
+static ssize_t setup_data_read(struct file *file, char __user *user_buf,
 			       size_t count, loff_t *ppos)
 {
 	struct setup_data_node *node = file->private_data;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/kgdb.c linux-3.2.22-g-v/arch/x86/kernel/kgdb.c
--- linux-3.2.22/arch/x86/kernel/kgdb.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/kgdb.c	2012-07-11 20:20:37.063977711 +0200
@@ -126,11 +126,11 @@ char *dbg_get_reg(int regno, void *mem, 
 #ifdef CONFIG_X86_32
 	switch (regno) {
 	case GDB_SS:
-		if (!user_mode_vm(regs))
+		if (!user_mode(regs))
 			*(unsigned long *)mem = __KERNEL_DS;
 		break;
 	case GDB_SP:
-		if (!user_mode_vm(regs))
+		if (!user_mode(regs))
 			*(unsigned long *)mem = kernel_stack_pointer(regs);
 		break;
 	case GDB_GS:
@@ -475,12 +475,12 @@ int kgdb_arch_handle_exception(int e_vec
 	case 'k':
 		/* clear the trace bit */
 		linux_regs->flags &= ~X86_EFLAGS_TF;
-		atomic_set(&kgdb_cpu_doing_single_step, -1);
+		atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1);
 
 		/* set the trace bit if we're stepping */
 		if (remcomInBuffer[0] == 's') {
 			linux_regs->flags |= X86_EFLAGS_TF;
-			atomic_set(&kgdb_cpu_doing_single_step,
+			atomic_set_unchecked(&kgdb_cpu_doing_single_step,
 				   raw_smp_processor_id());
 		}
 
@@ -545,7 +545,7 @@ static int __kgdb_notify(struct die_args
 
 	switch (cmd) {
 	case DIE_DEBUG:
-		if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
+		if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) {
 			if (user_mode(regs))
 				return single_step_cont(regs, args);
 			break;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/kprobes.c linux-3.2.22-g-v/arch/x86/kernel/kprobes.c
--- linux-3.2.22/arch/x86/kernel/kprobes.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/kprobes.c	2012-07-11 20:20:37.063977711 +0200
@@ -118,8 +118,11 @@ static void __kprobes __synthesize_relat
 	} __attribute__((packed)) *insn;
 
 	insn = (struct __arch_relative_insn *)from;
+
+	pax_open_kernel();
 	insn->raddr = (s32)((long)(to) - ((long)(from) + 5));
 	insn->op = op;
+	pax_close_kernel();
 }
 
 /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/
@@ -156,7 +159,7 @@ static int __kprobes can_boost(kprobe_op
 	kprobe_opcode_t opcode;
 	kprobe_opcode_t *orig_opcodes = opcodes;
 
-	if (search_exception_tables((unsigned long)opcodes))
+	if (search_exception_tables(ktva_ktla((unsigned long)opcodes)))
 		return 0;	/* Page fault may occur on this address. */
 
 retry:
@@ -317,7 +320,9 @@ static int __kprobes __copy_instruction(
 		}
 	}
 	insn_get_length(&insn);
+	pax_open_kernel();
 	memcpy(dest, insn.kaddr, insn.length);
+	pax_close_kernel();
 
 #ifdef CONFIG_X86_64
 	if (insn_rip_relative(&insn)) {
@@ -341,7 +346,9 @@ static int __kprobes __copy_instruction(
 			  (u8 *) dest;
 		BUG_ON((s64) (s32) newdisp != newdisp); /* Sanity check.  */
 		disp = (u8 *) dest + insn_offset_displacement(&insn);
+		pax_open_kernel();
 		*(s32 *) disp = (s32) newdisp;
+		pax_close_kernel();
 	}
 #endif
 	return insn.length;
@@ -355,12 +362,12 @@ static void __kprobes arch_copy_kprobe(s
 	 */
 	__copy_instruction(p->ainsn.insn, p->addr, 0);
 
-	if (can_boost(p->addr))
+	if (can_boost(ktla_ktva(p->addr)))
 		p->ainsn.boostable = 0;
 	else
 		p->ainsn.boostable = -1;
 
-	p->opcode = *p->addr;
+	p->opcode = *(ktla_ktva(p->addr));
 }
 
 int __kprobes arch_prepare_kprobe(struct kprobe *p)
@@ -477,7 +484,7 @@ static void __kprobes setup_singlestep(s
 		 * nor set current_kprobe, because it doesn't use single
 		 * stepping.
 		 */
-		regs->ip = (unsigned long)p->ainsn.insn;
+		regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
 		preempt_enable_no_resched();
 		return;
 	}
@@ -496,7 +503,7 @@ static void __kprobes setup_singlestep(s
 	if (p->opcode == BREAKPOINT_INSTRUCTION)
 		regs->ip = (unsigned long)p->addr;
 	else
-		regs->ip = (unsigned long)p->ainsn.insn;
+		regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
 }
 
 /*
@@ -575,7 +582,7 @@ static int __kprobes kprobe_handler(stru
 				setup_singlestep(p, regs, kcb, 0);
 			return 1;
 		}
-	} else if (*addr != BREAKPOINT_INSTRUCTION) {
+	} else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) {
 		/*
 		 * The breakpoint instruction was removed right
 		 * after we hit it.  Another cpu has removed
@@ -683,6 +690,9 @@ static void __used __kprobes kretprobe_t
 			"	movq %rax, 152(%rsp)\n"
 			RESTORE_REGS_STRING
 			"	popfq\n"
+#ifdef KERNEXEC_PLUGIN
+			"	btsq $63,(%rsp)\n"
+#endif
 #else
 			"	pushf\n"
 			SAVE_REGS_STRING
@@ -820,7 +830,7 @@ static void __kprobes resume_execution(s
 		struct pt_regs *regs, struct kprobe_ctlblk *kcb)
 {
 	unsigned long *tos = stack_addr(regs);
-	unsigned long copy_ip = (unsigned long)p->ainsn.insn;
+	unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn);
 	unsigned long orig_ip = (unsigned long)p->addr;
 	kprobe_opcode_t *insn = p->ainsn.insn;
 
@@ -1002,7 +1012,7 @@ int __kprobes kprobe_exceptions_notify(s
 	struct die_args *args = data;
 	int ret = NOTIFY_DONE;
 
-	if (args->regs && user_mode_vm(args->regs))
+	if (args->regs && user_mode(args->regs))
 		return ret;
 
 	switch (val) {
@@ -1384,7 +1394,7 @@ int __kprobes arch_prepare_optimized_kpr
 	 * Verify if the address gap is in 2GB range, because this uses
 	 * a relative jump.
 	 */
-	rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE;
+	rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE;
 	if (abs(rel) > 0x7fffffff)
 		return -ERANGE;
 
@@ -1405,11 +1415,11 @@ int __kprobes arch_prepare_optimized_kpr
 	synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op);
 
 	/* Set probe function call */
-	synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback);
+	synthesize_relcall(buf + TMPL_CALL_IDX, ktla_ktva(optimized_callback));
 
 	/* Set returning jmp instruction at the tail of out-of-line buffer */
 	synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size,
-			   (u8 *)op->kp.addr + op->optinsn.size);
+			   (u8 *)ktla_ktva(op->kp.addr) + op->optinsn.size);
 
 	flush_icache_range((unsigned long) buf,
 			   (unsigned long) buf + TMPL_END_IDX +
@@ -1431,7 +1441,7 @@ static void __kprobes setup_optimize_kpr
 			((long)op->kp.addr + RELATIVEJUMP_SIZE));
 
 	/* Backup instructions which will be replaced by jump address */
-	memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE,
+	memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE,
 	       RELATIVE_ADDR_SIZE);
 
 	insn_buf[0] = RELATIVEJUMP_OPCODE;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/kvm.c linux-3.2.22-g-v/arch/x86/kernel/kvm.c
--- linux-3.2.22/arch/x86/kernel/kvm.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/kvm.c	2012-07-11 20:20:37.063977711 +0200
@@ -437,6 +437,7 @@ static void __init paravirt_ops_setup(vo
 		pv_mmu_ops.set_pud = kvm_set_pud;
 #if PAGETABLE_LEVELS == 4
 		pv_mmu_ops.set_pgd = kvm_set_pgd;
+		pv_mmu_ops.set_pgd_batched = kvm_set_pgd;
 #endif
 #endif
 		pv_mmu_ops.flush_tlb_user = kvm_flush_tlb;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/ldt.c linux-3.2.22-g-v/arch/x86/kernel/ldt.c
--- linux-3.2.22/arch/x86/kernel/ldt.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/ldt.c	2012-07-11 20:20:37.063977711 +0200
@@ -67,13 +67,13 @@ static int alloc_ldt(mm_context_t *pc, i
 	if (reload) {
 #ifdef CONFIG_SMP
 		preempt_disable();
-		load_LDT(pc);
+		load_LDT_nolock(pc);
 		if (!cpumask_equal(mm_cpumask(current->mm),
 				   cpumask_of(smp_processor_id())))
 			smp_call_function(flush_ldt, current->mm, 1);
 		preempt_enable();
 #else
-		load_LDT(pc);
+		load_LDT_nolock(pc);
 #endif
 	}
 	if (oldsize) {
@@ -95,7 +95,7 @@ static inline int copy_ldt(mm_context_t 
 		return err;
 
 	for (i = 0; i < old->size; i++)
-		write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE);
+		write_ldt_entry(new->ldt, i, old->ldt + i);
 	return 0;
 }
 
@@ -116,6 +116,24 @@ int init_new_context(struct task_struct 
 		retval = copy_ldt(&mm->context, &old_mm->context);
 		mutex_unlock(&old_mm->context.lock);
 	}
+
+	if (tsk == current) {
+		mm->context.vdso = 0;
+
+#ifdef CONFIG_X86_32
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		mm->context.user_cs_base = 0UL;
+		mm->context.user_cs_limit = ~0UL;
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+		cpus_clear(mm->context.cpu_user_cs_mask);
+#endif
+
+#endif
+#endif
+
+	}
+
 	return retval;
 }
 
@@ -230,6 +248,13 @@ static int write_ldt(void __user *ptr, u
 		}
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) {
+		error = -EINVAL;
+		goto out_unlock;
+	}
+#endif
+
 	fill_ldt(&ldt, &ldt_info);
 	if (oldmode)
 		ldt.avl = 0;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/machine_kexec_32.c linux-3.2.22-g-v/arch/x86/kernel/machine_kexec_32.c
--- linux-3.2.22/arch/x86/kernel/machine_kexec_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/machine_kexec_32.c	2012-07-11 20:20:37.067242316 +0200
@@ -27,7 +27,7 @@
 #include <asm/cacheflush.h>
 #include <asm/debugreg.h>
 
-static void set_idt(void *newidt, __u16 limit)
+static void set_idt(struct desc_struct *newidt, __u16 limit)
 {
 	struct desc_ptr curidt;
 
@@ -39,7 +39,7 @@ static void set_idt(void *newidt, __u16 
 }
 
 
-static void set_gdt(void *newgdt, __u16 limit)
+static void set_gdt(struct desc_struct *newgdt, __u16 limit)
 {
 	struct desc_ptr curgdt;
 
@@ -217,7 +217,7 @@ void machine_kexec(struct kimage *image)
 	}
 
 	control_page = page_address(image->control_code_page);
-	memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE);
+	memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE);
 
 	relocate_kernel_ptr = control_page;
 	page_list[PA_CONTROL_PAGE] = __pa(control_page);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/microcode_intel.c linux-3.2.22-g-v/arch/x86/kernel/microcode_intel.c
--- linux-3.2.22/arch/x86/kernel/microcode_intel.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/microcode_intel.c	2012-07-11 20:20:37.067242316 +0200
@@ -436,13 +436,13 @@ static enum ucode_state request_microcod
 
 static int get_ucode_user(void *to, const void *from, size_t n)
 {
-	return copy_from_user(to, from, n);
+	return copy_from_user(to, (const void __force_user *)from, n);
 }
 
 static enum ucode_state
 request_microcode_user(int cpu, const void __user *buf, size_t size)
 {
-	return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user);
+	return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user);
 }
 
 static void microcode_fini_cpu(int cpu)
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/module.c linux-3.2.22-g-v/arch/x86/kernel/module.c
--- linux-3.2.22/arch/x86/kernel/module.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/module.c	2012-07-11 20:20:37.067242316 +0200
@@ -36,15 +36,63 @@
 #define DEBUGP(fmt...)
 #endif
 
-void *module_alloc(unsigned long size)
+static inline void *__module_alloc(unsigned long size, pgprot_t prot) __size_overflow(1);
+static inline void *__module_alloc(unsigned long size, pgprot_t prot)
 {
-	if (PAGE_ALIGN(size) > MODULES_LEN)
+	if (size == 0 || PAGE_ALIGN(size) > MODULES_LEN)
 		return NULL;
 	return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
-				GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC,
+				GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, prot,
 				-1, __builtin_return_address(0));
 }
 
+void *module_alloc(unsigned long size)
+{
+
+#ifdef CONFIG_PAX_KERNEXEC
+	return __module_alloc(size, PAGE_KERNEL);
+#else
+	return __module_alloc(size, PAGE_KERNEL_EXEC);
+#endif
+
+}
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+void *module_alloc_exec(unsigned long size) __size_overflow(1);
+void *module_alloc_exec(unsigned long size)
+{
+	struct vm_struct *area;
+
+	if (size == 0)
+		return NULL;
+
+	area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END);
+	return area ? area->addr : NULL;
+}
+EXPORT_SYMBOL(module_alloc_exec);
+
+void module_free_exec(struct module *mod, void *module_region)
+{
+	vunmap(module_region);
+}
+EXPORT_SYMBOL(module_free_exec);
+#else
+void module_free_exec(struct module *mod, void *module_region)
+{
+	module_free(mod, module_region);
+}
+EXPORT_SYMBOL(module_free_exec);
+
+void *module_alloc_exec(unsigned long size) __size_overflow(1);
+void *module_alloc_exec(unsigned long size)
+{
+	return __module_alloc(size, PAGE_KERNEL_RX);
+}
+EXPORT_SYMBOL(module_alloc_exec);
+#endif
+#endif
+
 #ifdef CONFIG_X86_32
 int apply_relocate(Elf32_Shdr *sechdrs,
 		   const char *strtab,
@@ -55,14 +103,16 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 	unsigned int i;
 	Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
 	Elf32_Sym *sym;
-	uint32_t *location;
+	uint32_t *plocation, location;
 
 	DEBUGP("Applying relocate section %u to %u\n", relsec,
 	       sechdrs[relsec].sh_info);
 	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
 		/* This is where to make the change */
-		location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-			+ rel[i].r_offset;
+		plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset;
+		location = (uint32_t)plocation;
+		if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR)
+			plocation = ktla_ktva((void *)plocation);
 		/* This is the symbol it is referring to.  Note that all
 		   undefined symbols have been resolved.  */
 		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
@@ -71,11 +121,15 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 		switch (ELF32_R_TYPE(rel[i].r_info)) {
 		case R_386_32:
 			/* We add the value into the location given */
-			*location += sym->st_value;
+			pax_open_kernel();
+			*plocation += sym->st_value;
+			pax_close_kernel();
 			break;
 		case R_386_PC32:
 			/* Add the value, subtract its postition */
-			*location += sym->st_value - (uint32_t)location;
+			pax_open_kernel();
+			*plocation += sym->st_value - location;
+			pax_close_kernel();
 			break;
 		default:
 			printk(KERN_ERR "module %s: Unknown relocation: %u\n",
@@ -120,21 +174,30 @@ int apply_relocate_add(Elf64_Shdr *sechd
 		case R_X86_64_NONE:
 			break;
 		case R_X86_64_64:
+			pax_open_kernel();
 			*(u64 *)loc = val;
+			pax_close_kernel();
 			break;
 		case R_X86_64_32:
+			pax_open_kernel();
 			*(u32 *)loc = val;
+			pax_close_kernel();
 			if (val != *(u32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_32S:
+			pax_open_kernel();
 			*(s32 *)loc = val;
+			pax_close_kernel();
 			if ((s64)val != *(s32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_PC32:
 			val -= (u64)loc;
+			pax_open_kernel();
 			*(u32 *)loc = val;
+			pax_close_kernel();
+
 #if 0
 			if ((s64)val != *(s32 *)loc)
 				goto overflow;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/nmi.c linux-3.2.22-g-v/arch/x86/kernel/nmi.c
--- linux-3.2.22/arch/x86/kernel/nmi.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/nmi.c	2012-07-11 20:20:37.067242316 +0200
@@ -408,6 +408,17 @@ static notrace __kprobes void default_do
 dotraplinkage notrace __kprobes void
 do_nmi(struct pt_regs *regs, long error_code)
 {
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if (!user_mode(regs)) {
+		unsigned long cs = regs->cs & 0xFFFF;
+		unsigned long ip = ktva_ktla(regs->ip);
+
+		if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext)
+			regs->ip = ip;
+	}
+#endif
+
 	nmi_enter();
 
 	inc_irq_stat(__nmi_count);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/paravirt.c linux-3.2.22-g-v/arch/x86/kernel/paravirt.c
--- linux-3.2.22/arch/x86/kernel/paravirt.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/paravirt.c	2012-07-11 20:20:37.070601745 +0200
@@ -53,6 +53,9 @@ u64 _paravirt_ident_64(u64 x)
 {
 	return x;
 }
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
+PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64);
+#endif
 
 void __init default_banner(void)
 {
@@ -145,15 +148,19 @@ unsigned paravirt_patch_default(u8 type,
 	if (opfunc == NULL)
 		/* If there's no function, patch it with a ud2a (BUG) */
 		ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
-	else if (opfunc == _paravirt_nop)
+	else if (opfunc == (void *)_paravirt_nop)
 		/* If the operation is a nop, then nop the callsite */
 		ret = paravirt_patch_nop();
 
 	/* identity functions just return their single argument */
-	else if (opfunc == _paravirt_ident_32)
+	else if (opfunc == (void *)_paravirt_ident_32)
 		ret = paravirt_patch_ident_32(insnbuf, len);
-	else if (opfunc == _paravirt_ident_64)
+	else if (opfunc == (void *)_paravirt_ident_64)
+		ret = paravirt_patch_ident_64(insnbuf, len);
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
+	else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64)
 		ret = paravirt_patch_ident_64(insnbuf, len);
+#endif
 
 	else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
 		 type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
@@ -178,7 +185,7 @@ unsigned paravirt_patch_insns(void *insn
 	if (insn_len > len || start == NULL)
 		insn_len = len;
 	else
-		memcpy(insnbuf, start, insn_len);
+		memcpy(insnbuf, ktla_ktva(start), insn_len);
 
 	return insn_len;
 }
@@ -302,7 +309,7 @@ void arch_flush_lazy_mmu_mode(void)
 	preempt_enable();
 }
 
-struct pv_info pv_info = {
+struct pv_info pv_info __read_only = {
 	.name = "bare hardware",
 	.paravirt_enabled = 0,
 	.kernel_rpl = 0,
@@ -313,16 +320,16 @@ struct pv_info pv_info = {
 #endif
 };
 
-struct pv_init_ops pv_init_ops = {
+struct pv_init_ops pv_init_ops __read_only = {
 	.patch = native_patch,
 };
 
-struct pv_time_ops pv_time_ops = {
+struct pv_time_ops pv_time_ops __read_only = {
 	.sched_clock = native_sched_clock,
 	.steal_clock = native_steal_clock,
 };
 
-struct pv_irq_ops pv_irq_ops = {
+struct pv_irq_ops pv_irq_ops __read_only = {
 	.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
 	.restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
 	.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
@@ -334,7 +341,7 @@ struct pv_irq_ops pv_irq_ops = {
 #endif
 };
 
-struct pv_cpu_ops pv_cpu_ops = {
+struct pv_cpu_ops pv_cpu_ops __read_only = {
 	.cpuid = native_cpuid,
 	.get_debugreg = native_get_debugreg,
 	.set_debugreg = native_set_debugreg,
@@ -395,21 +402,26 @@ struct pv_cpu_ops pv_cpu_ops = {
 	.end_context_switch = paravirt_nop,
 };
 
-struct pv_apic_ops pv_apic_ops = {
+struct pv_apic_ops pv_apic_ops __read_only = {
 #ifdef CONFIG_X86_LOCAL_APIC
 	.startup_ipi_hook = paravirt_nop,
 #endif
 };
 
-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
+#ifdef CONFIG_X86_32
+#ifdef CONFIG_X86_PAE
+/* 64-bit pagetable entries */
+#define PTE_IDENT	PV_CALLEE_SAVE(_paravirt_ident_64)
+#else
 /* 32-bit pagetable entries */
 #define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_32)
+#endif
 #else
 /* 64-bit pagetable entries */
 #define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_64)
 #endif
 
-struct pv_mmu_ops pv_mmu_ops = {
+struct pv_mmu_ops pv_mmu_ops __read_only = {
 
 	.read_cr2 = native_read_cr2,
 	.write_cr2 = native_write_cr2,
@@ -459,6 +471,7 @@ struct pv_mmu_ops pv_mmu_ops = {
 	.make_pud = PTE_IDENT,
 
 	.set_pgd = native_set_pgd,
+	.set_pgd_batched = native_set_pgd_batched,
 #endif
 #endif /* PAGETABLE_LEVELS >= 3 */
 
@@ -478,6 +491,12 @@ struct pv_mmu_ops pv_mmu_ops = {
 	},
 
 	.set_fixmap = native_set_fixmap,
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.pax_open_kernel = native_pax_open_kernel,
+	.pax_close_kernel = native_pax_close_kernel,
+#endif
+
 };
 
 EXPORT_SYMBOL_GPL(pv_time_ops);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/paravirt-spinlocks.c linux-3.2.22-g-v/arch/x86/kernel/paravirt-spinlocks.c
--- linux-3.2.22/arch/x86/kernel/paravirt-spinlocks.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/paravirt-spinlocks.c	2012-07-11 20:20:37.067242316 +0200
@@ -13,7 +13,7 @@ default_spin_lock_flags(arch_spinlock_t 
 	arch_spin_lock(lock);
 }
 
-struct pv_lock_ops pv_lock_ops = {
+struct pv_lock_ops pv_lock_ops __read_only = {
 #ifdef CONFIG_SMP
 	.spin_is_locked = __ticket_spin_is_locked,
 	.spin_is_contended = __ticket_spin_is_contended,
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/pci-iommu_table.c linux-3.2.22-g-v/arch/x86/kernel/pci-iommu_table.c
--- linux-3.2.22/arch/x86/kernel/pci-iommu_table.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/pci-iommu_table.c	2012-07-11 20:20:37.070601745 +0200
@@ -2,7 +2,7 @@
 #include <asm/iommu_table.h>
 #include <linux/string.h>
 #include <linux/kallsyms.h>
-
+#include <linux/sched.h>
 
 #define DEBUG 1
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/process_32.c linux-3.2.22-g-v/arch/x86/kernel/process_32.c
--- linux-3.2.22/arch/x86/kernel/process_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/process_32.c	2012-07-11 20:20:37.070601745 +0200
@@ -67,6 +67,7 @@ asmlinkage void ret_from_fork(void) __as
 unsigned long thread_saved_pc(struct task_struct *tsk)
 {
 	return ((unsigned long *)tsk->thread.sp)[3];
+//XXX	return tsk->thread.eip;
 }
 
 #ifndef CONFIG_SMP
@@ -130,15 +131,14 @@ void __show_regs(struct pt_regs *regs, i
 	unsigned long sp;
 	unsigned short ss, gs;
 
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		sp = regs->sp;
 		ss = regs->ss & 0xffff;
-		gs = get_user_gs(regs);
 	} else {
 		sp = kernel_stack_pointer(regs);
 		savesegment(ss, ss);
-		savesegment(gs, gs);
 	}
+	gs = get_user_gs(regs);
 
 	show_regs_common();
 
@@ -200,13 +200,14 @@ int copy_thread(unsigned long clone_flag
 	struct task_struct *tsk;
 	int err;
 
-	childregs = task_pt_regs(p);
+	childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8;
 	*childregs = *regs;
 	childregs->ax = 0;
 	childregs->sp = sp;
 
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.sp0 = (unsigned long) (childregs+1);
+	p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
 
 	p->thread.ip = (unsigned long) ret_from_fork;
 
@@ -296,7 +297,7 @@ __switch_to(struct task_struct *prev_p, 
 	struct thread_struct *prev = &prev_p->thread,
 				 *next = &next_p->thread;
 	int cpu = smp_processor_id();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 	fpu_switch_t fpu;
 
 	/* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
@@ -320,6 +321,10 @@ __switch_to(struct task_struct *prev_p, 
 	 */
 	lazy_save_gs(prev->gs);
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(task_thread_info(next_p)->addr_limit);
+#endif
+
 	/*
 	 * Load the per-thread Thread-Local Storage descriptor.
 	 */
@@ -350,6 +355,9 @@ __switch_to(struct task_struct *prev_p, 
 	 */
 	arch_end_context_switch(next_p);
 
+	percpu_write(current_task, next_p);
+	percpu_write(current_tinfo, &next_p->tinfo);
+
 	/*
 	 * Restore %gs if needed (which is common)
 	 */
@@ -358,8 +366,6 @@ __switch_to(struct task_struct *prev_p, 
 
 	switch_fpu_finish(next_p, fpu);
 
-	percpu_write(current_task, next_p);
-
 	return prev_p;
 }
 
@@ -389,4 +395,3 @@ unsigned long get_wchan(struct task_stru
 	} while (count++ < 16);
 	return 0;
 }
-
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/process_64.c linux-3.2.22-g-v/arch/x86/kernel/process_64.c
--- linux-3.2.22/arch/x86/kernel/process_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/process_64.c	2012-07-11 20:20:37.070601745 +0200
@@ -89,7 +89,7 @@ static void __exit_idle(void)
 void exit_idle(void)
 {
 	/* idle loop has pid 0 */
-	if (current->pid)
+	if (task_pid_nr(current))
 		return;
 	__exit_idle();
 }
@@ -264,8 +264,7 @@ int copy_thread(unsigned long clone_flag
 	struct pt_regs *childregs;
 	struct task_struct *me = current;
 
-	childregs = ((struct pt_regs *)
-			(THREAD_SIZE + task_stack_page(p))) - 1;
+	childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 16;
 	*childregs = *regs;
 
 	childregs->ax = 0;
@@ -277,6 +276,7 @@ int copy_thread(unsigned long clone_flag
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.sp0 = (unsigned long) (childregs+1);
 	p->thread.usersp = me->thread.usersp;
+	p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
 
 	set_tsk_thread_flag(p, TIF_FORK);
 
@@ -379,7 +379,7 @@ __switch_to(struct task_struct *prev_p, 
 	struct thread_struct *prev = &prev_p->thread;
 	struct thread_struct *next = &next_p->thread;
 	int cpu = smp_processor_id();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 	unsigned fsindex, gsindex;
 	fpu_switch_t fpu;
 
@@ -461,10 +461,9 @@ __switch_to(struct task_struct *prev_p, 
 	prev->usersp = percpu_read(old_rsp);
 	percpu_write(old_rsp, next->usersp);
 	percpu_write(current_task, next_p);
+	percpu_write(current_tinfo, &next_p->tinfo);
 
-	percpu_write(kernel_stack,
-		  (unsigned long)task_stack_page(next_p) +
-		  THREAD_SIZE - KERNEL_STACK_OFFSET);
+	percpu_write(kernel_stack, next->sp0);
 
 	/*
 	 * Now maybe reload the debug registers and handle I/O bitmaps
@@ -519,12 +518,11 @@ unsigned long get_wchan(struct task_stru
 	if (!p || p == current || p->state == TASK_RUNNING)
 		return 0;
 	stack = (unsigned long)task_stack_page(p);
-	if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
+	if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64))
 		return 0;
 	fp = *(u64 *)(p->thread.sp);
 	do {
-		if (fp < (unsigned long)stack ||
-		    fp >= (unsigned long)stack+THREAD_SIZE)
+		if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64))
 			return 0;
 		ip = *(u64 *)(fp+8);
 		if (!in_sched_functions(ip))
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/process.c linux-3.2.22-g-v/arch/x86/kernel/process.c
--- linux-3.2.22/arch/x86/kernel/process.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/process.c	2012-07-11 20:20:37.070601745 +0200
@@ -48,16 +48,33 @@ void free_thread_xstate(struct task_stru
 
 void free_thread_info(struct thread_info *ti)
 {
-	free_thread_xstate(ti->task);
 	free_pages((unsigned long)ti, THREAD_ORDER);
 }
 
+static struct kmem_cache *task_struct_cachep;
+
 void arch_task_cache_init(void)
 {
-        task_xstate_cachep =
-        	kmem_cache_create("task_xstate", xstate_size,
+	/* create a slab on which task_structs can be allocated */
+	task_struct_cachep =
+		kmem_cache_create("task_struct", sizeof(struct task_struct),
+			ARCH_MIN_TASKALIGN, SLAB_PANIC | SLAB_NOTRACK, NULL);
+
+	task_xstate_cachep =
+		kmem_cache_create("task_xstate", xstate_size,
 				  __alignof__(union thread_xstate),
-				  SLAB_PANIC | SLAB_NOTRACK, NULL);
+				  SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL);
+}
+
+struct task_struct *alloc_task_struct_node(int node)
+{
+	return kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node);
+}
+
+void free_task_struct(struct task_struct *task)
+{
+	free_thread_xstate(task);
+	kmem_cache_free(task_struct_cachep, task);
 }
 
 /*
@@ -70,7 +87,7 @@ void exit_thread(void)
 	unsigned long *bp = t->io_bitmap_ptr;
 
 	if (bp) {
-		struct tss_struct *tss = &per_cpu(init_tss, get_cpu());
+		struct tss_struct *tss = init_tss + get_cpu();
 
 		t->io_bitmap_ptr = NULL;
 		clear_thread_flag(TIF_IO_BITMAP);
@@ -106,7 +123,7 @@ void show_regs_common(void)
 
 	printk(KERN_CONT "\n");
 	printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s",
-		current->pid, current->comm, print_tainted(),
+		task_pid_nr(current), current->comm, print_tainted(),
 		init_utsname()->release,
 		(int)strcspn(init_utsname()->version, " "),
 		init_utsname()->version);
@@ -120,6 +137,9 @@ void flush_thread(void)
 {
 	struct task_struct *tsk = current;
 
+#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF)
+	loadsegment(gs, 0);
+#endif
 	flush_ptrace_hw_breakpoint(tsk);
 	memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
 	/*
@@ -282,10 +302,10 @@ int kernel_thread(int (*fn)(void *), voi
 	regs.di = (unsigned long) arg;
 
 #ifdef CONFIG_X86_32
-	regs.ds = __USER_DS;
-	regs.es = __USER_DS;
+	regs.ds = __KERNEL_DS;
+	regs.es = __KERNEL_DS;
 	regs.fs = __KERNEL_PERCPU;
-	regs.gs = __KERNEL_STACK_CANARY;
+	savesegment(gs, regs.gs);
 #else
 	regs.ss = __KERNEL_DS;
 #endif
@@ -411,7 +431,7 @@ bool set_pm_idle_to_default(void)
 
 	return ret;
 }
-void stop_this_cpu(void *dummy)
+__noreturn void stop_this_cpu(void *dummy)
 {
 	local_irq_disable();
 	/*
@@ -653,16 +673,37 @@ static int __init idle_setup(char *str)
 }
 early_param("idle", idle_setup);
 
-unsigned long arch_align_stack(unsigned long sp)
+#ifdef CONFIG_PAX_RANDKSTACK
+void pax_randomize_kstack(struct pt_regs *regs)
 {
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
-	return sp & ~0xf;
-}
+	struct thread_struct *thread = &current->thread;
+	unsigned long time;
 
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long range_end = mm->brk + 0x02000000;
-	return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
-}
+	if (!randomize_va_space)
+		return;
+
+	if (v8086_mode(regs))
+		return;
+
+	rdtscl(time);
 
+	/* P4 seems to return a 0 LSB, ignore it */
+#ifdef CONFIG_MPENTIUM4
+	time &= 0x3EUL;
+	time <<= 2;
+#elif defined(CONFIG_X86_64)
+	time &= 0xFUL;
+	time <<= 4;
+#else
+	time &= 0x1FUL;
+	time <<= 3;
+#endif
+
+	thread->sp0 ^= time;
+	load_sp0(init_tss + smp_processor_id(), thread);
+
+#ifdef CONFIG_X86_64
+	percpu_write(kernel_stack, thread->sp0);
+#endif
+}
+#endif
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/ptrace.c linux-3.2.22-g-v/arch/x86/kernel/ptrace.c
--- linux-3.2.22/arch/x86/kernel/ptrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/ptrace.c	2012-07-11 20:20:37.073975632 +0200
@@ -822,7 +822,7 @@ long arch_ptrace(struct task_struct *chi
 		 unsigned long addr, unsigned long data)
 {
 	int ret;
-	unsigned long __user *datap = (unsigned long __user *)data;
+	unsigned long __user *datap = (__force unsigned long __user *)data;
 
 	switch (request) {
 	/* read the word at location addr in the USER area. */
@@ -907,14 +907,14 @@ long arch_ptrace(struct task_struct *chi
 		if ((int) addr < 0)
 			return -EIO;
 		ret = do_get_thread_area(child, addr,
-					(struct user_desc __user *)data);
+					(__force struct user_desc __user *) data);
 		break;
 
 	case PTRACE_SET_THREAD_AREA:
 		if ((int) addr < 0)
 			return -EIO;
 		ret = do_set_thread_area(child, addr,
-					(struct user_desc __user *)data, 0);
+					(__force struct user_desc __user *) data, 0);
 		break;
 #endif
 
@@ -1331,7 +1331,7 @@ static void fill_sigtrap_info(struct tas
 	memset(info, 0, sizeof(*info));
 	info->si_signo = SIGTRAP;
 	info->si_code = si_code;
-	info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL;
+	info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL;
 }
 
 void user_single_step_siginfo(struct task_struct *tsk,
@@ -1360,6 +1360,10 @@ void send_sigtrap(struct task_struct *ts
 # define IS_IA32	0
 #endif
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * We must return the syscall number to actually look up in the table.
  * This can be -1L to skip running any syscall at all.
@@ -1368,6 +1372,11 @@ long syscall_trace_enter(struct pt_regs 
 {
 	long ret = 0;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+                gr_delayed_cred_worker();
+#endif		
+
 	/*
 	 * If we stepped into a sysenter/syscall insn, it trapped in
 	 * kernel mode; do_debug() cleared TF and set TIF_SINGLESTEP.
@@ -1413,6 +1422,11 @@ void syscall_trace_leave(struct pt_regs 
 {
 	bool step;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+                gr_delayed_cred_worker();
+#endif		
+
 	if (unlikely(current->audit_context))
 		audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/pvclock.c linux-3.2.22-g-v/arch/x86/kernel/pvclock.c
--- linux-3.2.22/arch/x86/kernel/pvclock.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/pvclock.c	2012-07-11 20:20:37.073975632 +0200
@@ -81,11 +81,11 @@ unsigned long pvclock_tsc_khz(struct pvc
 	return pv_tsc_khz;
 }
 
-static atomic64_t last_value = ATOMIC64_INIT(0);
+static atomic64_unchecked_t last_value = ATOMIC64_INIT(0);
 
 void pvclock_resume(void)
 {
-	atomic64_set(&last_value, 0);
+	atomic64_set_unchecked(&last_value, 0);
 }
 
 cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
@@ -121,11 +121,11 @@ cycle_t pvclock_clocksource_read(struct 
 	 * updating at the same time, and one of them could be slightly behind,
 	 * making the assumption that last_value always go forward fail to hold.
 	 */
-	last = atomic64_read(&last_value);
+	last = atomic64_read_unchecked(&last_value);
 	do {
 		if (ret < last)
 			return last;
-		last = atomic64_cmpxchg(&last_value, last, ret);
+		last = atomic64_cmpxchg_unchecked(&last_value, last, ret);
 	} while (unlikely(last != ret));
 
 	return ret;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/reboot.c linux-3.2.22-g-v/arch/x86/kernel/reboot.c
--- linux-3.2.22/arch/x86/kernel/reboot.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/reboot.c	2012-07-11 20:20:37.073975632 +0200
@@ -35,7 +35,7 @@ void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
 
 static const struct desc_ptr no_idt = {};
-static int reboot_mode;
+static unsigned short reboot_mode;
 enum reboot_type reboot_type = BOOT_ACPI;
 int reboot_force;
 
@@ -324,13 +324,17 @@ core_initcall(reboot_init);
 extern const unsigned char machine_real_restart_asm[];
 extern const u64 machine_real_restart_gdt[3];
 
-void machine_real_restart(unsigned int type)
+__noreturn void machine_real_restart(unsigned int type)
 {
 	void *restart_va;
 	unsigned long restart_pa;
-	void (*restart_lowmem)(unsigned int);
+	void (* __noreturn restart_lowmem)(unsigned int);
 	u64 *lowmem_gdt;
 
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
+	struct desc_struct *gdt;
+#endif
+
 	local_irq_disable();
 
 	/* Write zero to CMOS register number 0x0f, which the BIOS POST
@@ -356,14 +360,14 @@ void machine_real_restart(unsigned int t
 	   boot)".  This seems like a fairly standard thing that gets set by
 	   REBOOT.COM programs, and the previous reset routine did this
 	   too. */
-	*((unsigned short *)0x472) = reboot_mode;
+	*(unsigned short *)(__va(0x472)) = reboot_mode;
 
 	/* Patch the GDT in the low memory trampoline */
 	lowmem_gdt = TRAMPOLINE_SYM(machine_real_restart_gdt);
 
 	restart_va = TRAMPOLINE_SYM(machine_real_restart_asm);
 	restart_pa = virt_to_phys(restart_va);
-	restart_lowmem = (void (*)(unsigned int))restart_pa;
+	restart_lowmem = (void *)restart_pa;
 
 	/* GDT[0]: GDT self-pointer */
 	lowmem_gdt[0] =
@@ -374,7 +378,33 @@ void machine_real_restart(unsigned int t
 		GDT_ENTRY(0x009b, restart_pa, 0xffff);
 
 	/* Jump to the identity-mapped low memory code */
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
+	gdt = get_cpu_gdt_table(smp_processor_id());
+	pax_open_kernel();
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	gdt[GDT_ENTRY_KERNEL_DS].type = 3;
+	gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf;
+	asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r" (__KERNEL_DS) : "memory");
+#endif
+#ifdef CONFIG_PAX_KERNEXEC
+	gdt[GDT_ENTRY_KERNEL_CS].base0 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].base1 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].base2 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].limit0 = 0xffff;
+	gdt[GDT_ENTRY_KERNEL_CS].limit = 0xf;
+	gdt[GDT_ENTRY_KERNEL_CS].g = 1;
+#endif
+	pax_close_kernel();
+#endif
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	asm volatile("push %0; push %1; lret\n" : : "i" (__KERNEL_CS), "rm" (restart_lowmem), "a" (type));
+	unreachable();
+#else
 	restart_lowmem(type);
+#endif
+
 }
 #ifdef CONFIG_APM_MODULE
 EXPORT_SYMBOL(machine_real_restart);
@@ -540,7 +570,7 @@ void __attribute__((weak)) mach_reboot_f
  * try to force a triple fault and then cycle between hitting the keyboard
  * controller and doing that
  */
-static void native_machine_emergency_restart(void)
+__noreturn static void native_machine_emergency_restart(void)
 {
 	int i;
 	int attempt = 0;
@@ -664,13 +694,13 @@ void native_machine_shutdown(void)
 #endif
 }
 
-static void __machine_emergency_restart(int emergency)
+static __noreturn void __machine_emergency_restart(int emergency)
 {
 	reboot_emergency = emergency;
 	machine_ops.emergency_restart();
 }
 
-static void native_machine_restart(char *__unused)
+static __noreturn void native_machine_restart(char *__unused)
 {
 	printk("machine restart\n");
 
@@ -679,7 +709,7 @@ static void native_machine_restart(char 
 	__machine_emergency_restart(0);
 }
 
-static void native_machine_halt(void)
+static __noreturn void native_machine_halt(void)
 {
 	/* stop other cpus and apics */
 	machine_shutdown();
@@ -690,7 +720,7 @@ static void native_machine_halt(void)
 	stop_this_cpu(NULL);
 }
 
-static void native_machine_power_off(void)
+__noreturn static void native_machine_power_off(void)
 {
 	if (pm_power_off) {
 		if (!reboot_force)
@@ -699,6 +729,7 @@ static void native_machine_power_off(voi
 	}
 	/* a fallback in case there is no PM info available */
 	tboot_shutdown(TB_SHUTDOWN_HALT);
+	unreachable();
 }
 
 struct machine_ops machine_ops = {
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/relocate_kernel_64.S linux-3.2.22-g-v/arch/x86/kernel/relocate_kernel_64.S
--- linux-3.2.22/arch/x86/kernel/relocate_kernel_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/relocate_kernel_64.S	2012-07-11 20:20:37.073975632 +0200
@@ -11,6 +11,7 @@
 #include <asm/kexec.h>
 #include <asm/processor-flags.h>
 #include <asm/pgtable_types.h>
+#include <asm/alternative-asm.h>
 
 /*
  * Must be relocatable PIC code callable as a C function
@@ -160,13 +161,14 @@ identity_mapped:
 	xorq    %rbp, %rbp
 	xorq	%r8,  %r8
 	xorq	%r9,  %r9
-	xorq	%r10, %r9
+	xorq	%r10, %r10
 	xorq	%r11, %r11
 	xorq	%r12, %r12
 	xorq	%r13, %r13
 	xorq	%r14, %r14
 	xorq	%r15, %r15
 
+	pax_force_retaddr 0, 1
 	ret
 
 1:
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/setup.c linux-3.2.22-g-v/arch/x86/kernel/setup.c
--- linux-3.2.22/arch/x86/kernel/setup.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/setup.c	2012-07-11 20:20:37.077316963 +0200
@@ -447,7 +447,7 @@ static void __init parse_setup_data(void
 
 		switch (data->type) {
 		case SETUP_E820_EXT:
-			parse_e820_ext(data);
+			parse_e820_ext((struct setup_data __force_kernel *)data);
 			break;
 		case SETUP_DTB:
 			add_dtb(pa_data);
@@ -650,7 +650,7 @@ static void __init trim_bios_range(void)
 	 * area (640->1Mb) as ram even though it is not.
 	 * take them out.
 	 */
-	e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
+	e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1);
 	sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
 }
 
@@ -773,14 +773,14 @@ void __init setup_arch(char **cmdline_p)
 
 	if (!boot_params.hdr.root_flags)
 		root_mountflags &= ~MS_RDONLY;
-	init_mm.start_code = (unsigned long) _text;
-	init_mm.end_code = (unsigned long) _etext;
+	init_mm.start_code = ktla_ktva((unsigned long) _text);
+	init_mm.end_code = ktla_ktva((unsigned long) _etext);
 	init_mm.end_data = (unsigned long) _edata;
 	init_mm.brk = _brk_end;
 
-	code_resource.start = virt_to_phys(_text);
-	code_resource.end = virt_to_phys(_etext)-1;
-	data_resource.start = virt_to_phys(_etext);
+	code_resource.start = virt_to_phys(ktla_ktva(_text));
+	code_resource.end = virt_to_phys(ktla_ktva(_etext))-1;
+	data_resource.start = virt_to_phys(_sdata);
 	data_resource.end = virt_to_phys(_edata)-1;
 	bss_resource.start = virt_to_phys(&__bss_start);
 	bss_resource.end = virt_to_phys(&__bss_stop)-1;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/setup_percpu.c linux-3.2.22-g-v/arch/x86/kernel/setup_percpu.c
--- linux-3.2.22/arch/x86/kernel/setup_percpu.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/setup_percpu.c	2012-07-11 20:20:37.077316963 +0200
@@ -21,19 +21,17 @@
 #include <asm/cpu.h>
 #include <asm/stackprotector.h>
 
-DEFINE_PER_CPU(int, cpu_number);
+#ifdef CONFIG_SMP
+DEFINE_PER_CPU(unsigned int, cpu_number);
 EXPORT_PER_CPU_SYMBOL(cpu_number);
+#endif
 
-#ifdef CONFIG_X86_64
 #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
-#else
-#define BOOT_PERCPU_OFFSET 0
-#endif
 
 DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
 EXPORT_PER_CPU_SYMBOL(this_cpu_off);
 
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
+unsigned long __per_cpu_offset[NR_CPUS] __read_only = {
 	[0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET,
 };
 EXPORT_SYMBOL(__per_cpu_offset);
@@ -155,10 +153,10 @@ static inline void setup_percpu_segment(
 {
 #ifdef CONFIG_X86_32
 	struct desc_struct gdt;
+	unsigned long base = per_cpu_offset(cpu);
 
-	pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF,
-			0x2 | DESCTYPE_S, 0x8);
-	gdt.s = 1;
+	pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT,
+			0x83 | DESCTYPE_S, 0xC);
 	write_gdt_entry(get_cpu_gdt_table(cpu),
 			GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
 #endif
@@ -219,6 +217,11 @@ void __init setup_per_cpu_areas(void)
 	/* alrighty, percpu areas up and running */
 	delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
 	for_each_possible_cpu(cpu) {
+#ifdef CONFIG_CC_STACKPROTECTOR
+#ifdef CONFIG_X86_32
+		unsigned long canary = per_cpu(stack_canary.canary, cpu);
+#endif
+#endif
 		per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
 		per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
 		per_cpu(cpu_number, cpu) = cpu;
@@ -259,6 +262,12 @@ void __init setup_per_cpu_areas(void)
 		 */
 		set_cpu_numa_node(cpu, early_cpu_to_node(cpu));
 #endif
+#ifdef CONFIG_CC_STACKPROTECTOR
+#ifdef CONFIG_X86_32
+		if (!cpu)
+			per_cpu(stack_canary.canary, cpu) = canary;
+#endif
+#endif
 		/*
 		 * Up to this point, the boot CPU has been using .init.data
 		 * area.  Reload any changed state for the boot CPU.
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/signal.c linux-3.2.22-g-v/arch/x86/kernel/signal.c
--- linux-3.2.22/arch/x86/kernel/signal.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/signal.c	2012-07-11 20:20:37.077316963 +0200
@@ -198,7 +198,7 @@ static unsigned long align_sigframe(unsi
 	 * Align the stack pointer according to the i386 ABI,
 	 * i.e. so that on function entry ((sp + 4) & 15) == 0.
 	 */
-	sp = ((sp + 4) & -16ul) - 4;
+	sp = ((sp - 12) & -16ul) - 4;
 #else /* !CONFIG_X86_32 */
 	sp = round_down(sp, 16) - 8;
 #endif
@@ -249,11 +249,11 @@ get_sigframe(struct k_sigaction *ka, str
 	 * Return an always-bogus address instead so we will die with SIGSEGV.
 	 */
 	if (onsigstack && !likely(on_sig_stack(sp)))
-		return (void __user *)-1L;
+		return (__force void __user *)-1L;
 
 	/* save i387 state */
 	if (used_math() && save_i387_xstate(*fpstate) < 0)
-		return (void __user *)-1L;
+		return (__force void __user *)-1L;
 
 	return (void __user *)sp;
 }
@@ -308,9 +308,9 @@ __setup_frame(int sig, struct k_sigactio
 	}
 
 	if (current->mm->context.vdso)
-		restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn);
+		restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn);
 	else
-		restorer = &frame->retcode;
+		restorer = (void __user *)&frame->retcode;
 	if (ka->sa.sa_flags & SA_RESTORER)
 		restorer = ka->sa.sa_restorer;
 
@@ -324,7 +324,7 @@ __setup_frame(int sig, struct k_sigactio
 	 * reasons and because gdb uses it as a signature to notice
 	 * signal handler stack frames.
 	 */
-	err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode);
+	err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode);
 
 	if (err)
 		return -EFAULT;
@@ -378,7 +378,10 @@ static int __setup_rt_frame(int sig, str
 		err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
 		/* Set up to return from userspace.  */
-		restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
+		if (current->mm->context.vdso)
+			restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
+		else
+			restorer = (void __user *)&frame->retcode;
 		if (ka->sa.sa_flags & SA_RESTORER)
 			restorer = ka->sa.sa_restorer;
 		put_user_ex(restorer, &frame->pretcode);
@@ -390,7 +393,7 @@ static int __setup_rt_frame(int sig, str
 		 * reasons and because gdb uses it as a signature to notice
 		 * signal handler stack frames.
 		 */
-		put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode);
+		put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 
 	if (err)
@@ -769,7 +772,7 @@ static void do_signal(struct pt_regs *re
 	 * X86_32: vm86 regs switched out by assembly code before reaching
 	 * here, so testing against kernel CS suffices.
 	 */
-	if (!user_mode(regs))
+	if (!user_mode_novm(regs))
 		return;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/smpboot.c linux-3.2.22-g-v/arch/x86/kernel/smpboot.c
--- linux-3.2.22/arch/x86/kernel/smpboot.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/smpboot.c	2012-07-11 20:20:37.077316963 +0200
@@ -709,17 +709,20 @@ static int __cpuinit do_boot_cpu(int api
 	set_idle_for_cpu(cpu, c_idle.idle);
 do_rest:
 	per_cpu(current_task, cpu) = c_idle.idle;
+	per_cpu(current_tinfo, cpu) = &c_idle.idle->tinfo;
 #ifdef CONFIG_X86_32
 	/* Stack for startup_32 can be just as for start_secondary onwards */
 	irq_ctx_init(cpu);
 #else
 	clear_tsk_thread_flag(c_idle.idle, TIF_FORK);
 	initial_gs = per_cpu_offset(cpu);
-	per_cpu(kernel_stack, cpu) =
-		(unsigned long)task_stack_page(c_idle.idle) -
-		KERNEL_STACK_OFFSET + THREAD_SIZE;
+	per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(c_idle.idle) - 16 + THREAD_SIZE;
 #endif
+
+	pax_open_kernel();
 	early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
+	pax_close_kernel();
+
 	initial_code = (unsigned long)start_secondary;
 	stack_start  = c_idle.idle->thread.sp;
 
@@ -861,6 +864,12 @@ int __cpuinit native_cpu_up(unsigned int
 
 	per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	clone_pgd_range(get_cpu_pgd(cpu) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+#endif
+
 	err = do_boot_cpu(apicid, cpu);
 	if (err) {
 		pr_debug("do_boot_cpu failed %d\n", err);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/step.c linux-3.2.22-g-v/arch/x86/kernel/step.c
--- linux-3.2.22/arch/x86/kernel/step.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/step.c	2012-07-11 20:20:37.080645401 +0200
@@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struc
 		struct desc_struct *desc;
 		unsigned long base;
 
-		seg &= ~7UL;
+		seg >>= 3;
 
 		mutex_lock(&child->mm->context.lock);
-		if (unlikely((seg >> 3) >= child->mm->context.size))
+		if (unlikely(seg >= child->mm->context.size))
 			addr = -1L; /* bogus selector, access would fault */
 		else {
 			desc = child->mm->context.ldt + seg;
@@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struc
 			addr += base;
 		}
 		mutex_unlock(&child->mm->context.lock);
-	}
+	} else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS)
+		addr = ktla_ktva(addr);
 
 	return addr;
 }
@@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct t
 	unsigned char opcode[15];
 	unsigned long addr = convert_ip_to_linear(child, regs);
 
+	if (addr == -EINVAL)
+		return 0;
+
 	copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0);
 	for (i = 0; i < copied; i++) {
 		switch (opcode[i]) {
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/syscall_table_32.S linux-3.2.22-g-v/arch/x86/kernel/syscall_table_32.S
--- linux-3.2.22/arch/x86/kernel/syscall_table_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/syscall_table_32.S	2012-07-11 20:20:45.337449722 +0200
@@ -1,3 +1,4 @@
+.section .rodata,"a",@progbits
 ENTRY(sys_call_table)
 	.long sys_restart_syscall	/* 0 - old "setup()" system call, used for restarting */
 	.long sys_exit
@@ -272,7 +273,7 @@ ENTRY(sys_call_table)
 	.long sys_tgkill	/* 270 */
 	.long sys_utimes
  	.long sys_fadvise64_64
-	.long sys_ni_syscall	/* sys_vserver */
+	.long sys_vserver
 	.long sys_mbind
 	.long sys_get_mempolicy
 	.long sys_set_mempolicy
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/sys_i386_32.c linux-3.2.22-g-v/arch/x86/kernel/sys_i386_32.c
--- linux-3.2.22/arch/x86/kernel/sys_i386_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/sys_i386_32.c	2012-07-11 20:20:37.080645401 +0200
@@ -24,17 +24,224 @@
 
 #include <asm/syscalls.h>
 
-/*
- * Do a system call from kernel instead of calling sys_execve so we
- * end up with proper pt_regs.
- */
-int kernel_execve(const char *filename,
-		  const char *const argv[],
-		  const char *const envp[])
+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
 {
-	long __res;
-	asm volatile ("int $0x80"
-	: "=a" (__res)
-	: "0" (__NR_execve), "b" (filename), "c" (argv), "d" (envp) : "memory");
-	return __res;
+	unsigned long pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	if (len > pax_task_size || addr > pax_task_size - len)
+		return -EINVAL;
+
+	return 0;
+}
+
+unsigned long
+arch_get_unmapped_area(struct file *filp, unsigned long addr,
+		unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct *vma;
+	unsigned long start_addr, pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (len > pax_task_size)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		if (pax_task_size - len >= addr) {
+			vma = find_vma(mm, addr);
+			if (check_heap_stack_gap(vma, addr, len))
+				return addr;
+		}
+	}
+	if (len > mm->cached_hole_size) {
+		start_addr = addr = mm->free_area_cache;
+	} else {
+		start_addr = addr = mm->mmap_base;
+		mm->cached_hole_size = 0;
+	}
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE) && start_addr >= mm->mmap_base) {
+		start_addr = 0x00110000UL;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			start_addr += mm->delta_mmap & 0x03FFF000UL;
+#endif
+
+		if (mm->start_brk <= start_addr && start_addr < mm->mmap_base)
+			start_addr = addr = mm->mmap_base;
+		else
+			addr = start_addr;
+	}
+#endif
+
+full_search:
+	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+		/* At this point:  (!vma || addr < vma->vm_end). */
+		if (pax_task_size - len < addr) {
+			/*
+			 * Start a new search - just in case we missed
+			 * some holes.
+			 */
+			if (start_addr != mm->mmap_base) {
+				start_addr = addr = mm->mmap_base;
+				mm->cached_hole_size = 0;
+				goto full_search;
+			}
+			return -ENOMEM;
+		}
+		if (check_heap_stack_gap(vma, addr, len))
+			break;
+		if (addr + mm->cached_hole_size < vma->vm_start)
+			mm->cached_hole_size = vma->vm_start - addr;
+		addr = vma->vm_end;
+		if (mm->start_brk <= addr && addr < mm->mmap_base) {
+			start_addr = addr = mm->mmap_base;
+			mm->cached_hole_size = 0;
+			goto full_search;
+		}
+	}
+
+	/*
+	 * Remember the place where we stopped the search:
+	 */
+	mm->free_area_cache = addr + len;
+	return addr;
+}
+
+unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
+			  const unsigned long len, const unsigned long pgoff,
+			  const unsigned long flags)
+{
+	struct vm_area_struct *vma;
+	struct mm_struct *mm = current->mm;
+	unsigned long base = mm->mmap_base, addr = addr0, pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	/* requested length too big for entire address space */
+	if (len > pax_task_size)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE))
+		goto bottomup;
+#endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
+	/* requesting a specific address */
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		if (pax_task_size - len >= addr) {
+			vma = find_vma(mm, addr);
+			if (check_heap_stack_gap(vma, addr, len))
+				return addr;
+		}
+	}
+
+	/* check if free_area_cache is useful for us */
+	if (len <= mm->cached_hole_size) {
+		mm->cached_hole_size = 0;
+		mm->free_area_cache = mm->mmap_base;
+	}
+
+	/* either no address requested or can't fit in requested address hole */
+	addr = mm->free_area_cache;
+
+	/* make sure it can fit in the remaining address space */
+	if (addr > len) {
+		vma = find_vma(mm, addr-len);
+		if (check_heap_stack_gap(vma, addr - len, len))
+			/* remember the address as a hint for next time */
+			return (mm->free_area_cache = addr-len);
+	}
+
+	if (mm->mmap_base < len)
+		goto bottomup;
+
+	addr = mm->mmap_base-len;
+
+	do {
+		/*
+		 * Lookup failure means no vma is above this address,
+		 * else if new region fits below vma->vm_start,
+		 * return with success:
+		 */
+		vma = find_vma(mm, addr);
+		if (check_heap_stack_gap(vma, addr, len))
+			/* remember the address as a hint for next time */
+			return (mm->free_area_cache = addr);
+
+		/* remember the largest hole we saw so far */
+		if (addr + mm->cached_hole_size < vma->vm_start)
+			mm->cached_hole_size = vma->vm_start - addr;
+
+		/* try just below the current vma->vm_start */
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
+
+bottomup:
+	/*
+	 * A failed mmap() very likely causes application failure,
+	 * so fall back to the bottom-up function here. This scenario
+	 * can happen with large stack limits and large mmap()
+	 * allocations.
+	 */
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE;
+	else
+#endif
+
+	mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		mm->mmap_base += mm->delta_mmap;
+#endif
+
+	mm->free_area_cache = mm->mmap_base;
+	mm->cached_hole_size = ~0UL;
+	addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
+	/*
+	 * Restore the topdown base:
+	 */
+	mm->mmap_base = base;
+	mm->free_area_cache = base;
+	mm->cached_hole_size = ~0UL;
+
+	return addr;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/sys_x86_64.c linux-3.2.22-g-v/arch/x86/kernel/sys_x86_64.c
--- linux-3.2.22/arch/x86/kernel/sys_x86_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/sys_x86_64.c	2012-07-11 20:20:37.080645401 +0200
@@ -95,8 +95,8 @@ out:
 	return error;
 }
 
-static void find_start_end(unsigned long flags, unsigned long *begin,
-			   unsigned long *end)
+static void find_start_end(struct mm_struct *mm, unsigned long flags,
+			   unsigned long *begin, unsigned long *end)
 {
 	if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) {
 		unsigned long new_begin;
@@ -115,7 +115,7 @@ static void find_start_end(unsigned long
 				*begin = new_begin;
 		}
 	} else {
-		*begin = TASK_UNMAPPED_BASE;
+		*begin = mm->mmap_base;
 		*end = TASK_SIZE;
 	}
 }
@@ -132,16 +132,19 @@ arch_get_unmapped_area(struct file *filp
 	if (flags & MAP_FIXED)
 		return addr;
 
-	find_start_end(flags, &begin, &end);
+	find_start_end(mm, flags, &begin, &end);
 
 	if (len > end)
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
-		if (end - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (end - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 	if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32))
@@ -172,7 +175,7 @@ full_search:
 			}
 			return -ENOMEM;
 		}
-		if (!vma || addr + len <= vma->vm_start) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/*
 			 * Remember the place where we stopped the search:
 			 */
@@ -195,7 +198,7 @@ arch_get_unmapped_area_topdown(struct fi
 {
 	struct vm_area_struct *vma;
 	struct mm_struct *mm = current->mm;
-	unsigned long addr = addr0;
+	unsigned long base = mm->mmap_base, addr = addr0;
 
 	/* requested length too big for entire address space */
 	if (len > TASK_SIZE)
@@ -208,13 +211,18 @@ arch_get_unmapped_area_topdown(struct fi
 	if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT))
 		goto bottomup;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
-		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-				(!vma || addr + len <= vma->vm_start))
-			return addr;
+		if (TASK_SIZE - len >= addr) {
+			vma = find_vma(mm, addr);
+			if (check_heap_stack_gap(vma, addr, len))
+				return addr;
+		}
 	}
 
 	/* check if free_area_cache is useful for us */
@@ -232,7 +240,7 @@ arch_get_unmapped_area_topdown(struct fi
 						    ALIGN_TOPDOWN);
 
 		vma = find_vma(mm, tmp_addr);
-		if (!vma || tmp_addr + len <= vma->vm_start)
+		if (check_heap_stack_gap(vma, tmp_addr, len))
 			/* remember the address as a hint for next time */
 			return mm->free_area_cache = tmp_addr;
 	}
@@ -251,7 +259,7 @@ arch_get_unmapped_area_topdown(struct fi
 		 * return with success:
 		 */
 		vma = find_vma(mm, addr);
-		if (!vma || addr+len <= vma->vm_start)
+		if (check_heap_stack_gap(vma, addr, len))
 			/* remember the address as a hint for next time */
 			return mm->free_area_cache = addr;
 
@@ -260,8 +268,8 @@ arch_get_unmapped_area_topdown(struct fi
 			mm->cached_hole_size = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = vma->vm_start-len;
-	} while (len < vma->vm_start);
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
 
 bottomup:
 	/*
@@ -270,13 +278,21 @@ bottomup:
 	 * can happen with large stack limits and large mmap()
 	 * allocations.
 	 */
+	mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		mm->mmap_base += mm->delta_mmap;
+#endif
+
+	mm->free_area_cache = mm->mmap_base;
 	mm->cached_hole_size = ~0UL;
-	mm->free_area_cache = TASK_UNMAPPED_BASE;
 	addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
 	/*
 	 * Restore the topdown base:
 	 */
-	mm->free_area_cache = mm->mmap_base;
+	mm->mmap_base = base;
+	mm->free_area_cache = base;
 	mm->cached_hole_size = ~0UL;
 
 	return addr;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/tboot.c linux-3.2.22-g-v/arch/x86/kernel/tboot.c
--- linux-3.2.22/arch/x86/kernel/tboot.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/tboot.c	2012-07-11 20:20:37.080645401 +0200
@@ -219,7 +219,7 @@ static int tboot_setup_sleep(void)
 
 void tboot_shutdown(u32 shutdown_type)
 {
-	void (*shutdown)(void);
+	void (* __noreturn shutdown)(void);
 
 	if (!tboot_enabled())
 		return;
@@ -241,7 +241,7 @@ void tboot_shutdown(u32 shutdown_type)
 
 	switch_to_tboot_pt();
 
-	shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry;
+	shutdown = (void *)tboot->shutdown_entry;
 	shutdown();
 
 	/* should not reach here */
@@ -298,7 +298,7 @@ void tboot_sleep(u8 sleep_state, u32 pm1
 	tboot_shutdown(acpi_shutdown_map[sleep_state]);
 }
 
-static atomic_t ap_wfs_count;
+static atomic_unchecked_t ap_wfs_count;
 
 static int tboot_wait_for_aps(int num_aps)
 {
@@ -322,9 +322,9 @@ static int __cpuinit tboot_cpu_callback(
 {
 	switch (action) {
 	case CPU_DYING:
-		atomic_inc(&ap_wfs_count);
+		atomic_inc_unchecked(&ap_wfs_count);
 		if (num_online_cpus() == 1)
-			if (tboot_wait_for_aps(atomic_read(&ap_wfs_count)))
+			if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count)))
 				return NOTIFY_BAD;
 		break;
 	}
@@ -343,7 +343,7 @@ static __init int tboot_late_init(void)
 
 	tboot_create_trampoline();
 
-	atomic_set(&ap_wfs_count, 0);
+	atomic_set_unchecked(&ap_wfs_count, 0);
 	register_hotcpu_notifier(&tboot_cpu_notifier);
 	return 0;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/time.c linux-3.2.22-g-v/arch/x86/kernel/time.c
--- linux-3.2.22/arch/x86/kernel/time.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/time.c	2012-07-11 20:20:37.083974226 +0200
@@ -31,9 +31,9 @@ unsigned long profile_pc(struct pt_regs 
 {
 	unsigned long pc = instruction_pointer(regs);
 
-	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
+	if (!user_mode(regs) && in_lock_functions(pc)) {
 #ifdef CONFIG_FRAME_POINTER
-		return *(unsigned long *)(regs->bp + sizeof(long));
+		return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long)));
 #else
 		unsigned long *sp =
 			(unsigned long *)kernel_stack_pointer(regs);
@@ -42,11 +42,17 @@ unsigned long profile_pc(struct pt_regs 
 		 * or above a saved flags. Eflags has bits 22-31 zero,
 		 * kernel addresses don't.
 		 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		return ktla_ktva(sp[0]);
+#else
 		if (sp[0] >> 22)
 			return sp[0];
 		if (sp[1] >> 22)
 			return sp[1];
 #endif
+
+#endif
 	}
 	return pc;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/tls.c linux-3.2.22-g-v/arch/x86/kernel/tls.c
--- linux-3.2.22/arch/x86/kernel/tls.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/tls.c	2012-07-11 20:20:37.083974226 +0200
@@ -85,6 +85,11 @@ int do_set_thread_area(struct task_struc
 	if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
 		return -EINVAL;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE))
+		return -EINVAL;
+#endif
+
 	set_tls_desc(p, idx, &info, 1);
 
 	return 0;
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/trampoline_32.S linux-3.2.22-g-v/arch/x86/kernel/trampoline_32.S
--- linux-3.2.22/arch/x86/kernel/trampoline_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/trampoline_32.S	2012-07-11 20:20:37.083974226 +0200
@@ -32,6 +32,12 @@
 #include <asm/segment.h>
 #include <asm/page_types.h>
 
+#ifdef CONFIG_PAX_KERNEXEC
+#define ta(X) (X)
+#else
+#define ta(X) ((X) - __PAGE_OFFSET)
+#endif
+
 #ifdef CONFIG_SMP
 
 	.section ".x86_trampoline","a"
@@ -62,7 +68,7 @@ r_base = .
 	inc	%ax		# protected mode (PE) bit
 	lmsw	%ax		# into protected mode
 	# flush prefetch and jump to startup_32_smp in arch/i386/kernel/head.S
-	ljmpl	$__BOOT_CS, $(startup_32_smp-__PAGE_OFFSET)
+	ljmpl	$__BOOT_CS, $ta(startup_32_smp)
 
 	# These need to be in the same 64K segment as the above;
 	# hence we don't use the boot_gdt_descr defined in head.S
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/trampoline_64.S linux-3.2.22-g-v/arch/x86/kernel/trampoline_64.S
--- linux-3.2.22/arch/x86/kernel/trampoline_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/trampoline_64.S	2012-07-11 20:20:37.083974226 +0200
@@ -90,7 +90,7 @@ startup_32:
 	movl	$__KERNEL_DS, %eax	# Initialize the %ds segment register
 	movl	%eax, %ds
 
-	movl	$X86_CR4_PAE, %eax
+	movl	$(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax
 	movl	%eax, %cr4		# Enable PAE mode
 
 					# Setup trampoline 4 level pagetables
@@ -138,7 +138,7 @@ tidt:
 	# so the kernel can live anywhere
 	.balign 4
 tgdt:
-	.short	tgdt_end - tgdt		# gdt limit
+	.short	tgdt_end - tgdt - 1	# gdt limit
 	.long	tgdt - r_base
 	.short 0
 	.quad	0x00cf9b000000ffff	# __KERNEL32_CS
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/traps.c linux-3.2.22-g-v/arch/x86/kernel/traps.c
--- linux-3.2.22/arch/x86/kernel/traps.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/traps.c	2012-07-11 20:20:37.083974226 +0200
@@ -70,12 +70,6 @@ asmlinkage int system_call(void);
 
 /* Do we ignore FPU interrupts ? */
 char ignore_fpu_irq;
-
-/*
- * The IDT has to be page-aligned to simplify the Pentium
- * F0 0F bug workaround.
- */
-gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, };
 #endif
 
 DECLARE_BITMAP(used_vectors, NR_VECTORS);
@@ -108,13 +102,13 @@ static inline void preempt_conditional_c
 }
 
 static void __kprobes
-do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
+do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs,
 	long error_code, siginfo_t *info)
 {
 	struct task_struct *tsk = current;
 
 #ifdef CONFIG_X86_32
-	if (regs->flags & X86_VM_MASK) {
+	if (v8086_mode(regs)) {
 		/*
 		 * traps 0, 1, 3, 4, and 5 should be forwarded to vm86.
 		 * On nmi (interrupt 2), do_trap should not be called.
@@ -125,7 +119,7 @@ do_trap(int trapnr, int signr, char *str
 	}
 #endif
 
-	if (!user_mode(regs))
+	if (!user_mode_novm(regs))
 		goto kernel_trap;
 
 #ifdef CONFIG_X86_32
@@ -148,7 +142,7 @@ trap_signal:
 	    printk_ratelimit()) {
 		printk(KERN_INFO
 		       "%s[%d] trap %s ip:%lx sp:%lx error:%lx",
-		       tsk->comm, tsk->pid, str,
+		       tsk->comm, task_pid_nr(tsk), str,
 		       regs->ip, regs->sp, error_code);
 		print_vma_addr(" in ", regs->ip);
 		printk("\n");
@@ -165,8 +159,20 @@ kernel_trap:
 	if (!fixup_exception(regs)) {
 		tsk->thread.error_code = error_code;
 		tsk->thread.trap_no = trapnr;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		if (trapnr == 12 && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS))
+			str = "PAX: suspicious stack segment fault";
+#endif
+
 		die(str, regs, error_code);
 	}
+
+#ifdef CONFIG_PAX_REFCOUNT
+	if (trapnr == 4)
+		pax_report_refcount_overflow(regs);
+#endif
+
 	return;
 
 #ifdef CONFIG_X86_32
@@ -255,14 +261,30 @@ do_general_protection(struct pt_regs *re
 	conditional_sti(regs);
 
 #ifdef CONFIG_X86_32
-	if (regs->flags & X86_VM_MASK)
+	if (v8086_mode(regs))
 		goto gp_in_vm86;
 #endif
 
 	tsk = current;
-	if (!user_mode(regs))
+	if (!user_mode_novm(regs))
 		goto gp_in_kernel;
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+	if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) {
+		struct mm_struct *mm = tsk->mm;
+		unsigned long limit;
+
+		down_write(&mm->mmap_sem);
+		limit = mm->context.user_cs_limit;
+		if (limit < TASK_SIZE) {
+			track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC);
+			up_write(&mm->mmap_sem);
+			return;
+		}
+		up_write(&mm->mmap_sem);
+	}
+#endif
+
 	tsk->thread.error_code = error_code;
 	tsk->thread.trap_no = 13;
 
@@ -295,6 +317,13 @@ gp_in_kernel:
 	if (notify_die(DIE_GPF, "general protection fault", regs,
 				error_code, 13, SIGSEGV) == NOTIFY_STOP)
 		return;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)
+		die("PAX: suspicious general protection fault", regs, error_code);
+	else
+#endif
+
 	die("general protection fault", regs, error_code);
 }
 
@@ -414,7 +443,7 @@ dotraplinkage void __kprobes do_debug(st
 	/* It's safe to allow irq's after DR6 has been saved */
 	preempt_conditional_sti(regs);
 
-	if (regs->flags & X86_VM_MASK) {
+	if (v8086_mode(regs)) {
 		handle_vm86_trap((struct kernel_vm86_regs *) regs,
 				error_code, 1);
 		preempt_conditional_cli(regs);
@@ -428,7 +457,7 @@ dotraplinkage void __kprobes do_debug(st
 	 * We already checked v86 mode above, so we can check for kernel mode
 	 * by just checking the CPL of CS.
 	 */
-	if ((dr6 & DR_STEP) && !user_mode(regs)) {
+	if ((dr6 & DR_STEP) && !user_mode_novm(regs)) {
 		tsk->thread.debugreg6 &= ~DR_STEP;
 		set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
 		regs->flags &= ~X86_EFLAGS_TF;
@@ -457,7 +486,7 @@ void math_error(struct pt_regs *regs, in
 		return;
 	conditional_sti(regs);
 
-	if (!user_mode_vm(regs))
+	if (!user_mode(regs))
 	{
 		if (!fixup_exception(regs)) {
 			task->thread.error_code = error_code;
@@ -569,8 +598,8 @@ asmlinkage void __attribute__((weak)) sm
 void __math_state_restore(struct task_struct *tsk)
 {
 	/* We need a safe address that is cheap to find and that is already
-	   in L1. We've just brought in "tsk->thread.has_fpu", so use that */
-#define safe_address (tsk->thread.has_fpu)
+	   in L1. */
+#define safe_address (init_tss[smp_processor_id()].x86_tss.sp0)
 
 	/* AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception
 	   is pending.  Clear the x87 state here by setting it to fixed
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/verify_cpu.S linux-3.2.22-g-v/arch/x86/kernel/verify_cpu.S
--- linux-3.2.22/arch/x86/kernel/verify_cpu.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/verify_cpu.S	2012-07-11 20:20:37.083974226 +0200
@@ -20,6 +20,7 @@
  *	arch/x86/boot/compressed/head_64.S: Boot cpu verification
  *	arch/x86/kernel/trampoline_64.S: secondary processor verification
  *	arch/x86/kernel/head_32.S: processor startup
+ *	arch/x86/kernel/acpi/realmode/wakeup.S: 32bit processor resume
  *
  *	verify_cpu, returns the status of longmode and SSE in register %eax.
  *		0: Success    1: Failure
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/vm86_32.c linux-3.2.22-g-v/arch/x86/kernel/vm86_32.c
--- linux-3.2.22/arch/x86/kernel/vm86_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/vm86_32.c	2012-07-11 20:20:37.087304854 +0200
@@ -41,6 +41,7 @@
 #include <linux/ptrace.h>
 #include <linux/audit.h>
 #include <linux/stddef.h>
+#include <linux/grsecurity.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -148,7 +149,7 @@ struct pt_regs *save_v86_state(struct ke
 		do_exit(SIGSEGV);
 	}
 
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 	current->thread.sp0 = current->thread.saved_sp0;
 	current->thread.sysenter_cs = __KERNEL_CS;
 	load_sp0(tss, &current->thread);
@@ -210,6 +211,13 @@ int sys_vm86old(struct vm86_struct __use
 	struct task_struct *tsk;
 	int tmp, ret = -EPERM;
 
+#ifdef CONFIG_GRKERNSEC_VM86
+	if (!capable(CAP_SYS_RAWIO)) {
+		gr_handle_vm86();
+		goto out;
+	}
+#endif
+
 	tsk = current;
 	if (tsk->thread.saved_sp0)
 		goto out;
@@ -240,6 +248,14 @@ int sys_vm86(unsigned long cmd, unsigned
 	int tmp, ret;
 	struct vm86plus_struct __user *v86;
 
+#ifdef CONFIG_GRKERNSEC_VM86
+	if (!capable(CAP_SYS_RAWIO)) {
+		gr_handle_vm86();
+		ret = -EPERM;
+		goto out;
+	}
+#endif
+
 	tsk = current;
 	switch (cmd) {
 	case VM86_REQUEST_IRQ:
@@ -326,7 +342,7 @@ static void do_sys_vm86(struct kernel_vm
 	tsk->thread.saved_fs = info->regs32->fs;
 	tsk->thread.saved_gs = get_user_gs(info->regs32);
 
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 	tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0;
 	if (cpu_has_sep)
 		tsk->thread.sysenter_cs = 0;
@@ -531,7 +547,7 @@ static void do_int(struct kernel_vm86_re
 		goto cannot_handle;
 	if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored))
 		goto cannot_handle;
-	intr_ptr = (unsigned long __user *) (i << 2);
+	intr_ptr = (__force unsigned long __user *) (i << 2);
 	if (get_user(segoffs, intr_ptr))
 		goto cannot_handle;
 	if ((segoffs >> 16) == BIOSSEG)
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/vmlinux.lds.S linux-3.2.22-g-v/arch/x86/kernel/vmlinux.lds.S
--- linux-3.2.22/arch/x86/kernel/vmlinux.lds.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/vmlinux.lds.S	2012-07-11 20:20:37.087304854 +0200
@@ -26,6 +26,13 @@
 #include <asm/page_types.h>
 #include <asm/cache.h>
 #include <asm/boot.h>
+#include <asm/segment.h>
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+#define __KERNEL_TEXT_OFFSET	(LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR)
+#else
+#define __KERNEL_TEXT_OFFSET	0
+#endif
 
 #undef i386     /* in case the preprocessor is a 32bit one */
 
@@ -69,30 +76,43 @@ jiffies_64 = jiffies;
 
 PHDRS {
 	text PT_LOAD FLAGS(5);          /* R_E */
+#ifdef CONFIG_X86_32
+	module PT_LOAD FLAGS(5);        /* R_E */
+#endif
+#ifdef CONFIG_XEN
+	rodata PT_LOAD FLAGS(5);        /* R_E */
+#else
+	rodata PT_LOAD FLAGS(4);        /* R__ */
+#endif
 	data PT_LOAD FLAGS(6);          /* RW_ */
-#ifdef CONFIG_X86_64
+	init.begin PT_LOAD FLAGS(6);    /* RW_ */
 #ifdef CONFIG_SMP
 	percpu PT_LOAD FLAGS(6);        /* RW_ */
 #endif
+	text.init PT_LOAD FLAGS(5);     /* R_E */
+	text.exit PT_LOAD FLAGS(5);     /* R_E */
 	init PT_LOAD FLAGS(7);          /* RWE */
-#endif
 	note PT_NOTE FLAGS(0);          /* ___ */
 }
 
 SECTIONS
 {
 #ifdef CONFIG_X86_32
-        . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
-        phys_startup_32 = startup_32 - LOAD_OFFSET;
+	. = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR;
 #else
-        . = __START_KERNEL;
-        phys_startup_64 = startup_64 - LOAD_OFFSET;
+	. = __START_KERNEL;
 #endif
 
 	/* Text and read-only data */
-	.text :  AT(ADDR(.text) - LOAD_OFFSET) {
-		_text = .;
+	.text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
 		/* bootstrapping code */
+#ifdef CONFIG_X86_32
+		phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+#else
+		phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+#endif
+		__LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+		_text = .;
 		HEAD_TEXT
 #ifdef CONFIG_X86_32
 		. = ALIGN(PAGE_SIZE);
@@ -108,13 +128,47 @@ SECTIONS
 		IRQENTRY_TEXT
 		*(.fixup)
 		*(.gnu.warning)
-		/* End of text section */
-		_etext = .;
 	} :text = 0x9090
 
-	NOTES :text :note
+	. += __KERNEL_TEXT_OFFSET;
 
-	EXCEPTION_TABLE(16) :text = 0x9090
+#ifdef CONFIG_X86_32
+	. = ALIGN(PAGE_SIZE);
+	.module.text : AT(ADDR(.module.text) - LOAD_OFFSET) {
+
+#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_MODULES)
+		MODULES_EXEC_VADDR = .;
+		BYTE(0)
+		. += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024);
+		. = ALIGN(HPAGE_SIZE);
+		MODULES_EXEC_END = . - 1;
+#endif
+
+	} :module
+#endif
+
+	.text.end : AT(ADDR(.text.end) - LOAD_OFFSET) {
+		/* End of text section */
+		_etext = . - __KERNEL_TEXT_OFFSET;
+	}
+
+#ifdef CONFIG_X86_32
+	. = ALIGN(PAGE_SIZE);
+	.rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) {
+		*(.idt)
+		. = ALIGN(PAGE_SIZE);
+		*(.empty_zero_page)
+		*(.initial_pg_fixmap)
+		*(.initial_pg_pmd)
+		*(.initial_page_table)
+		*(.swapper_pg_dir)
+	} :rodata
+#endif
+
+	. = ALIGN(PAGE_SIZE);
+	NOTES :rodata :note
+
+	EXCEPTION_TABLE(16) :rodata
 
 #if defined(CONFIG_DEBUG_RODATA)
 	/* .text should occupy whole number of pages */
@@ -126,16 +180,20 @@ SECTIONS
 
 	/* Data */
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+
+#ifdef CONFIG_PAX_KERNEXEC
+		. = ALIGN(HPAGE_SIZE);
+#else
+		. = ALIGN(PAGE_SIZE);
+#endif
+
 		/* Start of data section */
 		_sdata = .;
 
 		/* init_task */
 		INIT_TASK_DATA(THREAD_SIZE)
 
-#ifdef CONFIG_X86_32
-		/* 32 bit has nosave before _edata */
 		NOSAVE_DATA
-#endif
 
 		PAGE_ALIGNED_DATA(PAGE_SIZE)
 
@@ -176,12 +234,19 @@ SECTIONS
 #endif /* CONFIG_X86_64 */
 
 	/* Init code and data - will be freed after init */
-	. = ALIGN(PAGE_SIZE);
 	.init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
+		BYTE(0)
+
+#ifdef CONFIG_PAX_KERNEXEC
+		. = ALIGN(HPAGE_SIZE);
+#else
+		. = ALIGN(PAGE_SIZE);
+#endif
+
 		__init_begin = .; /* paired with __init_end */
-	}
+	} :init.begin
 
-#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
+#ifdef CONFIG_SMP
 	/*
 	 * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
 	 * output PHDR, so the next output section - .init.text - should
@@ -190,12 +255,27 @@ SECTIONS
 	PERCPU_VADDR(INTERNODE_CACHE_BYTES, 0, :percpu)
 #endif
 
-	INIT_TEXT_SECTION(PAGE_SIZE)
-#ifdef CONFIG_X86_64
-	:init
-#endif
+	. = ALIGN(PAGE_SIZE);
+	init_begin = .;
+	.init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) {
+		VMLINUX_SYMBOL(_sinittext) = .;
+		INIT_TEXT
+		VMLINUX_SYMBOL(_einittext) = .;
+		. = ALIGN(PAGE_SIZE);
+	} :text.init
 
-	INIT_DATA_SECTION(16)
+	/*
+	 * .exit.text is discard at runtime, not link time, to deal with
+	 *  references from .altinstructions and .eh_frame
+	 */
+	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
+		EXIT_TEXT
+		. = ALIGN(16);
+	} :text.exit
+	. = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text);
+
+	. = ALIGN(PAGE_SIZE);
+	INIT_DATA_SECTION(16) :init
 
 	/*
 	 * Code and data for a variety of lowlevel trampolines, to be
@@ -269,19 +349,12 @@ SECTIONS
 	}
 
 	. = ALIGN(8);
-	/*
-	 * .exit.text is discard at runtime, not link time, to deal with
-	 *  references from .altinstructions and .eh_frame
-	 */
-	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
-		EXIT_TEXT
-	}
 
 	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
 		EXIT_DATA
 	}
 
-#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
+#ifndef CONFIG_SMP
 	PERCPU_SECTION(INTERNODE_CACHE_BYTES)
 #endif
 
@@ -300,16 +373,10 @@ SECTIONS
 	.smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
 		__smp_locks = .;
 		*(.smp_locks)
-		. = ALIGN(PAGE_SIZE);
 		__smp_locks_end = .;
+		. = ALIGN(PAGE_SIZE);
 	}
 
-#ifdef CONFIG_X86_64
-	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
-		NOSAVE_DATA
-	}
-#endif
-
 	/* BSS */
 	. = ALIGN(PAGE_SIZE);
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
@@ -325,6 +392,7 @@ SECTIONS
 		__brk_base = .;
 		. += 64 * 1024;		/* 64k alignment slop space */
 		*(.brk_reservation)	/* areas brk users have reserved */
+		. = ALIGN(HPAGE_SIZE);
 		__brk_limit = .;
 	}
 
@@ -351,13 +419,12 @@ SECTIONS
  * for the boot processor.
  */
 #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load
-INIT_PER_CPU(gdt_page);
 INIT_PER_CPU(irq_stack_union);
 
 /*
  * Build-time check on the image size:
  */
-. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
+. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE),
 	   "kernel image bigger than KERNEL_IMAGE_SIZE");
 
 #ifdef CONFIG_SMP
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/vsyscall_64.c linux-3.2.22-g-v/arch/x86/kernel/vsyscall_64.c
--- linux-3.2.22/arch/x86/kernel/vsyscall_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/vsyscall_64.c	2012-07-11 20:20:37.087304854 +0200
@@ -57,15 +57,13 @@ DEFINE_VVAR(struct vsyscall_gtod_data, v
 	.lock = __SEQLOCK_UNLOCKED(__vsyscall_gtod_data.lock),
 };
 
-static enum { EMULATE, NATIVE, NONE } vsyscall_mode = NATIVE;
+static enum { EMULATE, NONE } vsyscall_mode = EMULATE;
 
 static int __init vsyscall_setup(char *str)
 {
 	if (str) {
 		if (!strcmp("emulate", str))
 			vsyscall_mode = EMULATE;
-		else if (!strcmp("native", str))
-			vsyscall_mode = NATIVE;
 		else if (!strcmp("none", str))
 			vsyscall_mode = NONE;
 		else
@@ -178,7 +176,7 @@ bool emulate_vsyscall(struct pt_regs *re
 
 	tsk = current;
 	if (seccomp_mode(&tsk->seccomp))
-		do_exit(SIGKILL);
+		do_group_exit(SIGKILL);
 
 	switch (vsyscall_nr) {
 	case 0:
@@ -220,8 +218,7 @@ bool emulate_vsyscall(struct pt_regs *re
 	return true;
 
 sigsegv:
-	force_sig(SIGSEGV, current);
-	return true;
+	do_group_exit(SIGKILL);
 }
 
 /*
@@ -274,10 +271,7 @@ void __init map_vsyscall(void)
 	extern char __vvar_page;
 	unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page);
 
-	__set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall,
-		     vsyscall_mode == NATIVE
-		     ? PAGE_KERNEL_VSYSCALL
-		     : PAGE_KERNEL_VVAR);
+	__set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, PAGE_KERNEL_VVAR);
 	BUILD_BUG_ON((unsigned long)__fix_to_virt(VSYSCALL_FIRST_PAGE) !=
 		     (unsigned long)VSYSCALL_START);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/x8664_ksyms_64.c linux-3.2.22-g-v/arch/x86/kernel/x8664_ksyms_64.c
--- linux-3.2.22/arch/x86/kernel/x8664_ksyms_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/x8664_ksyms_64.c	2012-07-11 20:20:37.087304854 +0200
@@ -29,8 +29,6 @@ EXPORT_SYMBOL(__put_user_8);
 EXPORT_SYMBOL(copy_user_generic_string);
 EXPORT_SYMBOL(copy_user_generic_unrolled);
 EXPORT_SYMBOL(__copy_user_nocache);
-EXPORT_SYMBOL(_copy_from_user);
-EXPORT_SYMBOL(_copy_to_user);
 
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(clear_page);
diff -NurpP --minimal linux-3.2.22/arch/x86/kernel/xsave.c linux-3.2.22-g-v/arch/x86/kernel/xsave.c
--- linux-3.2.22/arch/x86/kernel/xsave.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kernel/xsave.c	2012-07-11 20:20:37.087304854 +0200
@@ -130,7 +130,7 @@ int check_for_xstate(struct i387_fxsave_
 	    fx_sw_user->xstate_size > fx_sw_user->extended_size)
 		return -EINVAL;
 
-	err = __get_user(magic2, (__u32 *) (((void *)fpstate) +
+	err = __get_user(magic2, (__u32 __user *) (((void __user *)fpstate) +
 					    fx_sw_user->extended_size -
 					    FP_XSTATE_MAGIC2_SIZE));
 	if (err)
@@ -266,7 +266,7 @@ fx_only:
 	 * the other extended state.
 	 */
 	xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE);
-	return fxrstor_checking((__force struct i387_fxsave_struct *)buf);
+	return fxrstor_checking((struct i387_fxsave_struct __force_kernel *)buf);
 }
 
 /*
@@ -295,7 +295,7 @@ int restore_i387_xstate(void __user *buf
 	if (use_xsave())
 		err = restore_user_xstate(buf);
 	else
-		err = fxrstor_checking((__force struct i387_fxsave_struct *)
+		err = fxrstor_checking((struct i387_fxsave_struct __force_kernel *)
 				       buf);
 	if (unlikely(err)) {
 		/*
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/emulate.c linux-3.2.22-g-v/arch/x86/kvm/emulate.c
--- linux-3.2.22/arch/x86/kvm/emulate.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/emulate.c	2012-07-11 20:20:37.090783739 +0200
@@ -249,6 +249,7 @@ struct gprefix {
 
 #define ____emulate_2op(ctxt, _op, _x, _y, _suffix, _dsttype)	\
 	do {								\
+		unsigned long _tmp;					\
 		__asm__ __volatile__ (					\
 			_PRE_EFLAGS("0", "4", "2")			\
 			_op _suffix " %"_x"3,%1; "			\
@@ -263,8 +264,6 @@ struct gprefix {
 /* Raw emulation: instruction has two explicit operands. */
 #define __emulate_2op_nobyte(ctxt,_op,_wx,_wy,_lx,_ly,_qx,_qy)		\
 	do {								\
-		unsigned long _tmp;					\
-									\
 		switch ((ctxt)->dst.bytes) {				\
 		case 2:							\
 			____emulate_2op(ctxt,_op,_wx,_wy,"w",u16);	\
@@ -280,7 +279,6 @@ struct gprefix {
 
 #define __emulate_2op(ctxt,_op,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy)		     \
 	do {								     \
-		unsigned long _tmp;					     \
 		switch ((ctxt)->dst.bytes) {				     \
 		case 1:							     \
 			____emulate_2op(ctxt,_op,_bx,_by,"b",u8);	     \
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/lapic.c linux-3.2.22-g-v/arch/x86/kvm/lapic.c
--- linux-3.2.22/arch/x86/kvm/lapic.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/lapic.c	2012-07-11 20:20:37.090783739 +0200
@@ -53,7 +53,7 @@
 #define APIC_BUS_CYCLE_NS 1
 
 /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */
-#define apic_debug(fmt, arg...)
+#define apic_debug(fmt, arg...) do {} while (0)
 
 #define APIC_LVT_NUM			6
 /* 14 is the version for Xeon and Pentium 8.4.8*/
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/mmu.c linux-3.2.22-g-v/arch/x86/kvm/mmu.c
--- linux-3.2.22/arch/x86/kvm/mmu.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/mmu.c	2012-07-11 20:20:37.094117053 +0200
@@ -3555,7 +3555,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *
 
 	pgprintk("%s: gpa %llx bytes %d\n", __func__, gpa, bytes);
 
-	invlpg_counter = atomic_read(&vcpu->kvm->arch.invlpg_counter);
+	invlpg_counter = atomic_read_unchecked(&vcpu->kvm->arch.invlpg_counter);
 
 	/*
 	 * Assume that the pte write on a page table of the same type
@@ -3587,7 +3587,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *
 	}
 
 	spin_lock(&vcpu->kvm->mmu_lock);
-	if (atomic_read(&vcpu->kvm->arch.invlpg_counter) != invlpg_counter)
+	if (atomic_read_unchecked(&vcpu->kvm->arch.invlpg_counter) != invlpg_counter)
 		gentry = 0;
 	kvm_mmu_free_some_pages(vcpu);
 	++vcpu->kvm->stat.mmu_pte_write;
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/paging_tmpl.h linux-3.2.22-g-v/arch/x86/kvm/paging_tmpl.h
--- linux-3.2.22/arch/x86/kvm/paging_tmpl.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/paging_tmpl.h	2012-07-11 20:20:37.094117053 +0200
@@ -197,7 +197,7 @@ retry_walk:
 		if (unlikely(kvm_is_error_hva(host_addr)))
 			goto error;
 
-		ptep_user = (pt_element_t __user *)((void *)host_addr + offset);
+		ptep_user = (pt_element_t __force_user *)((void *)host_addr + offset);
 		if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte))))
 			goto error;
 
@@ -705,7 +705,7 @@ static void FNAME(invlpg)(struct kvm_vcp
 	if (need_flush)
 		kvm_flush_remote_tlbs(vcpu->kvm);
 
-	atomic_inc(&vcpu->kvm->arch.invlpg_counter);
+	atomic_inc_unchecked(&vcpu->kvm->arch.invlpg_counter);
 
 	spin_unlock(&vcpu->kvm->mmu_lock);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/svm.c linux-3.2.22-g-v/arch/x86/kvm/svm.c
--- linux-3.2.22/arch/x86/kvm/svm.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/svm.c	2012-07-11 20:20:37.097450461 +0200
@@ -3405,7 +3405,11 @@ static void reload_tss(struct kvm_vcpu *
 	int cpu = raw_smp_processor_id();
 
 	struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
+
+	pax_open_kernel();
 	sd->tss_desc->type = 9; /* available 32/64-bit TSS */
+	pax_close_kernel();
+
 	load_TR_desc();
 }
 
@@ -3783,6 +3787,10 @@ static void svm_vcpu_run(struct kvm_vcpu
 #endif
 #endif
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 	reload_tss(vcpu);
 
 	local_irq_disable();
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/vmx.c linux-3.2.22-g-v/arch/x86/kvm/vmx.c
--- linux-3.2.22/arch/x86/kvm/vmx.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/vmx.c	2012-07-11 20:20:37.100783817 +0200
@@ -1305,7 +1305,11 @@ static void reload_tss(void)
 	struct desc_struct *descs;
 
 	descs = (void *)gdt->address;
+
+	pax_open_kernel();
 	descs[GDT_ENTRY_TSS].type = 9; /* available TSS */
+	pax_close_kernel();
+
 	load_TR_desc();
 }
 
@@ -2633,8 +2637,11 @@ static __init int hardware_setup(void)
 	if (!cpu_has_vmx_flexpriority())
 		flexpriority_enabled = 0;
 
-	if (!cpu_has_vmx_tpr_shadow())
-		kvm_x86_ops->update_cr8_intercept = NULL;
+	if (!cpu_has_vmx_tpr_shadow()) {
+		pax_open_kernel();
+		*(void **)&kvm_x86_ops->update_cr8_intercept = NULL;
+		pax_close_kernel();
+	}
 
 	if (enable_ept && !cpu_has_vmx_ept_2m_page())
 		kvm_disable_largepages();
@@ -3648,7 +3655,7 @@ static void vmx_set_constant_host_state(
 	vmcs_writel(HOST_IDTR_BASE, dt.address);   /* 22.2.4 */
 
 	asm("mov $.Lkvm_vmx_return, %0" : "=r"(tmpl));
-	vmcs_writel(HOST_RIP, tmpl); /* 22.2.5 */
+	vmcs_writel(HOST_RIP, ktla_ktva(tmpl)); /* 22.2.5 */
 
 	rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
 	vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
@@ -6171,6 +6178,12 @@ static void __noclone vmx_vcpu_run(struc
 		"jmp .Lkvm_vmx_return \n\t"
 		".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t"
 		".Lkvm_vmx_return: "
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		"ljmp %[cs],$.Lkvm_vmx_return2\n\t"
+		".Lkvm_vmx_return2: "
+#endif
+
 		/* Save guest registers, load host registers, keep flags */
 		"mov %0, %c[wordsize](%%"R"sp) \n\t"
 		"pop %0 \n\t"
@@ -6219,6 +6232,11 @@ static void __noclone vmx_vcpu_run(struc
 #endif
 		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
 		[wordsize]"i"(sizeof(ulong))
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		,[cs]"i"(__KERNEL_CS)
+#endif
+
 	      : "cc", "memory"
 		, R"ax", R"bx", R"di", R"si"
 #ifdef CONFIG_X86_64
@@ -6247,7 +6265,16 @@ static void __noclone vmx_vcpu_run(struc
 		}
 	}
 
-	asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS));
+	asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r"(__KERNEL_DS));
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	loadsegment(fs, __KERNEL_PERCPU);
+#endif
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 	vmx->loaded_vmcs->launched = 1;
 
 	vmx->exit_reason = vmcs_read32(VM_EXIT_REASON);
diff -NurpP --minimal linux-3.2.22/arch/x86/kvm/x86.c linux-3.2.22-g-v/arch/x86/kvm/x86.c
--- linux-3.2.22/arch/x86/kvm/x86.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/kvm/x86.c	2012-07-11 20:20:37.104117121 +0200
@@ -1345,8 +1345,8 @@ static int xen_hvm_config(struct kvm_vcp
 {
 	struct kvm *kvm = vcpu->kvm;
 	int lm = is_long_mode(vcpu);
-	u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64
-		: (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
+	u8 __user *blob_addr = lm ? (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_64
+		: (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
 	u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64
 		: kvm->arch.xen_hvm_config.blob_size_32;
 	u32 page_num = data & ~PAGE_MASK;
@@ -2165,6 +2165,8 @@ long kvm_arch_dev_ioctl(struct file *fil
 		if (n < msr_list.nmsrs)
 			goto out;
 		r = -EFAULT;
+		if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save))
+			goto out;
 		if (copy_to_user(user_msr_list->indices, &msrs_to_save,
 				 num_msrs_to_save * sizeof(u32)))
 			goto out;
@@ -2340,15 +2342,20 @@ static int kvm_vcpu_ioctl_set_cpuid2(str
 				     struct kvm_cpuid2 *cpuid,
 				     struct kvm_cpuid_entry2 __user *entries)
 {
-	int r;
+	int r, i;
 
 	r = -E2BIG;
 	if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
 		goto out;
 	r = -EFAULT;
-	if (copy_from_user(&vcpu->arch.cpuid_entries, entries,
-			   cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
+	if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
 		goto out;
+	for (i = 0; i < cpuid->nent; ++i) {
+		struct kvm_cpuid_entry2 cpuid_entry;
+		if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry)))
+			goto out;
+		vcpu->arch.cpuid_entries[i] = cpuid_entry;
+	}
 	vcpu->arch.cpuid_nent = cpuid->nent;
 	kvm_apic_set_version(vcpu);
 	kvm_x86_ops->cpuid_update(vcpu);
@@ -2363,15 +2370,19 @@ static int kvm_vcpu_ioctl_get_cpuid2(str
 				     struct kvm_cpuid2 *cpuid,
 				     struct kvm_cpuid_entry2 __user *entries)
 {
-	int r;
+	int r, i;
 
 	r = -E2BIG;
 	if (cpuid->nent < vcpu->arch.cpuid_nent)
 		goto out;
 	r = -EFAULT;
-	if (copy_to_user(entries, &vcpu->arch.cpuid_entries,
-			 vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
+	if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
 		goto out;
+	for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {
+		struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i];
+		if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry)))
+			goto out;
+	}
 	return 0;
 
 out:
@@ -2746,7 +2757,7 @@ static int kvm_vcpu_ioctl_set_lapic(stru
 static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
 				    struct kvm_interrupt *irq)
 {
-	if (irq->irq < 0 || irq->irq >= 256)
+	if (irq->irq >= 256)
 		return -EINVAL;
 	if (irqchip_in_kernel(vcpu->kvm))
 		return -ENXIO;
@@ -5188,7 +5199,7 @@ static void kvm_set_mmio_spte_mask(void)
 	kvm_mmu_set_mmio_spte_mask(mask);
 }
 
-int kvm_arch_init(void *opaque)
+int kvm_arch_init(const void *opaque)
 {
 	int r;
 	struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque;
diff -NurpP --minimal linux-3.2.22/arch/x86/lguest/boot.c linux-3.2.22-g-v/arch/x86/lguest/boot.c
--- linux-3.2.22/arch/x86/lguest/boot.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lguest/boot.c	2012-07-11 20:20:37.107450394 +0200
@@ -1195,9 +1195,10 @@ static __init int early_put_chars(u32 vt
  * Rebooting also tells the Host we're finished, but the RESTART flag tells the
  * Launcher to reboot us.
  */
-static void lguest_restart(char *reason)
+static __noreturn void lguest_restart(char *reason)
 {
 	hcall(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART, 0, 0);
+	BUG();
 }
 
 /*G:050
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/atomic64_32.c linux-3.2.22-g-v/arch/x86/lib/atomic64_32.c
--- linux-3.2.22/arch/x86/lib/atomic64_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/atomic64_32.c	2012-07-11 20:20:37.107450394 +0200
@@ -8,18 +8,30 @@
 
 long long atomic64_read_cx8(long long, const atomic64_t *v);
 EXPORT_SYMBOL(atomic64_read_cx8);
+long long atomic64_read_unchecked_cx8(long long, const atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_read_unchecked_cx8);
 long long atomic64_set_cx8(long long, const atomic64_t *v);
 EXPORT_SYMBOL(atomic64_set_cx8);
+long long atomic64_set_unchecked_cx8(long long, const atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_set_unchecked_cx8);
 long long atomic64_xchg_cx8(long long, unsigned high);
 EXPORT_SYMBOL(atomic64_xchg_cx8);
 long long atomic64_add_return_cx8(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_add_return_cx8);
+long long atomic64_add_return_unchecked_cx8(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_add_return_unchecked_cx8);
 long long atomic64_sub_return_cx8(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_sub_return_cx8);
+long long atomic64_sub_return_unchecked_cx8(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_sub_return_unchecked_cx8);
 long long atomic64_inc_return_cx8(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_inc_return_cx8);
+long long atomic64_inc_return_unchecked_cx8(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_inc_return_unchecked_cx8);
 long long atomic64_dec_return_cx8(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_dec_return_cx8);
+long long atomic64_dec_return_unchecked_cx8(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_dec_return_unchecked_cx8);
 long long atomic64_dec_if_positive_cx8(atomic64_t *v);
 EXPORT_SYMBOL(atomic64_dec_if_positive_cx8);
 int atomic64_inc_not_zero_cx8(atomic64_t *v);
@@ -30,26 +42,46 @@ EXPORT_SYMBOL(atomic64_add_unless_cx8);
 #ifndef CONFIG_X86_CMPXCHG64
 long long atomic64_read_386(long long, const atomic64_t *v);
 EXPORT_SYMBOL(atomic64_read_386);
+long long atomic64_read_unchecked_386(long long, const atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_read_unchecked_386);
 long long atomic64_set_386(long long, const atomic64_t *v);
 EXPORT_SYMBOL(atomic64_set_386);
+long long atomic64_set_unchecked_386(long long, const atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_set_unchecked_386);
 long long atomic64_xchg_386(long long, unsigned high);
 EXPORT_SYMBOL(atomic64_xchg_386);
 long long atomic64_add_return_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_add_return_386);
+long long atomic64_add_return_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_add_return_unchecked_386);
 long long atomic64_sub_return_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_sub_return_386);
+long long atomic64_sub_return_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_sub_return_unchecked_386);
 long long atomic64_inc_return_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_inc_return_386);
+long long atomic64_inc_return_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_inc_return_unchecked_386);
 long long atomic64_dec_return_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_dec_return_386);
+long long atomic64_dec_return_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_dec_return_unchecked_386);
 long long atomic64_add_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_add_386);
+long long atomic64_add_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_add_unchecked_386);
 long long atomic64_sub_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_sub_386);
+long long atomic64_sub_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_sub_unchecked_386);
 long long atomic64_inc_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_inc_386);
+long long atomic64_inc_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_inc_unchecked_386);
 long long atomic64_dec_386(long long a, atomic64_t *v);
 EXPORT_SYMBOL(atomic64_dec_386);
+long long atomic64_dec_unchecked_386(long long a, atomic64_unchecked_t *v);
+EXPORT_SYMBOL(atomic64_dec_unchecked_386);
 long long atomic64_dec_if_positive_386(atomic64_t *v);
 EXPORT_SYMBOL(atomic64_dec_if_positive_386);
 int atomic64_inc_not_zero_386(atomic64_t *v);
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/atomic64_386_32.S linux-3.2.22-g-v/arch/x86/lib/atomic64_386_32.S
--- linux-3.2.22/arch/x86/lib/atomic64_386_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/atomic64_386_32.S	2012-07-11 20:20:37.107450394 +0200
@@ -48,6 +48,10 @@ BEGIN(read)
 	movl  (v), %eax
 	movl 4(v), %edx
 RET_ENDP
+BEGIN(read_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+RET_ENDP
 #undef v
 
 #define v %esi
@@ -55,6 +59,10 @@ BEGIN(set)
 	movl %ebx,  (v)
 	movl %ecx, 4(v)
 RET_ENDP
+BEGIN(set_unchecked)
+	movl %ebx,  (v)
+	movl %ecx, 4(v)
+RET_ENDP
 #undef v
 
 #define v  %esi
@@ -70,6 +78,20 @@ RET_ENDP
 BEGIN(add)
 	addl %eax,  (v)
 	adcl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	subl %eax,  (v)
+	sbbl %edx, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(add_unchecked)
+	addl %eax,  (v)
+	adcl %edx, 4(v)
 RET_ENDP
 #undef v
 
@@ -77,6 +99,24 @@ RET_ENDP
 BEGIN(add_return)
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(add_return_unchecked)
+	addl  (v), %eax
+	adcl 4(v), %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -86,6 +126,20 @@ RET_ENDP
 BEGIN(sub)
 	subl %eax,  (v)
 	sbbl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	addl %eax,  (v)
+	adcl %edx, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(sub_unchecked)
+	subl %eax,  (v)
+	sbbl %edx, 4(v)
 RET_ENDP
 #undef v
 
@@ -96,6 +150,27 @@ BEGIN(sub_return)
 	sbbl $0, %edx
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(sub_return_unchecked)
+	negl %edx
+	negl %eax
+	sbbl $0, %edx
+	addl  (v), %eax
+	adcl 4(v), %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -105,6 +180,20 @@ RET_ENDP
 BEGIN(inc)
 	addl $1,  (v)
 	adcl $0, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	subl $1,  (v)
+	sbbl $0, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(inc_unchecked)
+	addl $1,  (v)
+	adcl $0, 4(v)
 RET_ENDP
 #undef v
 
@@ -114,6 +203,26 @@ BEGIN(inc_return)
 	movl 4(v), %edx
 	addl $1, %eax
 	adcl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(inc_return_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+	addl $1, %eax
+	adcl $0, %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -123,6 +232,20 @@ RET_ENDP
 BEGIN(dec)
 	subl $1,  (v)
 	sbbl $0, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	addl $1,  (v)
+	adcl $0, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(dec_unchecked)
+	subl $1,  (v)
+	sbbl $0, 4(v)
 RET_ENDP
 #undef v
 
@@ -132,6 +255,26 @@ BEGIN(dec_return)
 	movl 4(v), %edx
 	subl $1, %eax
 	sbbl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(dec_return_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+	subl $1, %eax
+	sbbl $0, %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -143,6 +286,13 @@ BEGIN(add_unless)
 	adcl %edx, %edi
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	cmpl %eax, %esi
 	je 3f
 1:
@@ -168,6 +318,13 @@ BEGIN(inc_not_zero)
 1:
 	addl $1, %eax
 	adcl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	movl %eax,  (v)
 	movl %edx, 4(v)
 	movl $1, %eax
@@ -186,6 +343,13 @@ BEGIN(dec_if_positive)
 	movl 4(v), %edx
 	subl $1, %eax
 	sbbl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 1f)
+#endif
+
 	js 1f
 	movl %eax,  (v)
 	movl %edx, 4(v)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/atomic64_cx8_32.S linux-3.2.22-g-v/arch/x86/lib/atomic64_cx8_32.S
--- linux-3.2.22/arch/x86/lib/atomic64_cx8_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/atomic64_cx8_32.S	2012-07-11 20:20:37.107450394 +0200
@@ -35,10 +35,20 @@ ENTRY(atomic64_read_cx8)
 	CFI_STARTPROC
 
 	read64 %ecx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_read_cx8)
 
+ENTRY(atomic64_read_unchecked_cx8)
+	CFI_STARTPROC
+
+	read64 %ecx
+	pax_force_retaddr
+	ret
+	CFI_ENDPROC
+ENDPROC(atomic64_read_unchecked_cx8)
+
 ENTRY(atomic64_set_cx8)
 	CFI_STARTPROC
 
@@ -48,10 +58,25 @@ ENTRY(atomic64_set_cx8)
 	cmpxchg8b (%esi)
 	jne 1b
 
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_set_cx8)
 
+ENTRY(atomic64_set_unchecked_cx8)
+	CFI_STARTPROC
+
+1:
+/* we don't need LOCK_PREFIX since aligned 64-bit writes
+ * are atomic on 586 and newer */
+	cmpxchg8b (%esi)
+	jne 1b
+
+	pax_force_retaddr
+	ret
+	CFI_ENDPROC
+ENDPROC(atomic64_set_unchecked_cx8)
+
 ENTRY(atomic64_xchg_cx8)
 	CFI_STARTPROC
 
@@ -62,12 +87,13 @@ ENTRY(atomic64_xchg_cx8)
 	cmpxchg8b (%esi)
 	jne 1b
 
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_xchg_cx8)
 
-.macro addsub_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
+.macro addsub_return func ins insc unchecked=""
+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
 	CFI_STARTPROC
 	SAVE ebp
 	SAVE ebx
@@ -84,27 +110,44 @@ ENTRY(atomic64_\func\()_return_cx8)
 	movl %edx, %ecx
 	\ins\()l %esi, %ebx
 	\insc\()l %edi, %ecx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+2:
+	_ASM_EXTABLE(2b, 3f)
+#endif
+.endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%ebp)
 	jne 1b
-
-10:
 	movl %ebx, %eax
 	movl %ecx, %edx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+3:
+#endif
+.endif
+
 	RESTORE edi
 	RESTORE esi
 	RESTORE ebx
 	RESTORE ebp
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
 .endm
 
 addsub_return add add adc
 addsub_return sub sub sbb
+addsub_return add add adc _unchecked
+addsub_return sub sub sbb _unchecked
 
-.macro incdec_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
+.macro incdec_return func ins insc unchecked=""
+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
 	CFI_STARTPROC
 	SAVE ebx
 
@@ -114,21 +157,39 @@ ENTRY(atomic64_\func\()_return_cx8)
 	movl %edx, %ecx
 	\ins\()l $1, %ebx
 	\insc\()l $0, %ecx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+2:
+	_ASM_EXTABLE(2b, 3f)
+#endif
+.endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
 	jne 1b
 
-10:
 	movl %ebx, %eax
 	movl %ecx, %edx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+3:
+#endif
+.endif
+
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
 .endm
 
 incdec_return inc add adc
 incdec_return dec sub sbb
+incdec_return inc add adc _unchecked
+incdec_return dec sub sbb _unchecked
 
 ENTRY(atomic64_dec_if_positive_cx8)
 	CFI_STARTPROC
@@ -140,6 +201,13 @@ ENTRY(atomic64_dec_if_positive_cx8)
 	movl %edx, %ecx
 	subl $1, %ebx
 	sbb $0, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	js 2f
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
@@ -149,6 +217,7 @@ ENTRY(atomic64_dec_if_positive_cx8)
 	movl %ebx, %eax
 	movl %ecx, %edx
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_dec_if_positive_cx8)
@@ -174,6 +243,13 @@ ENTRY(atomic64_add_unless_cx8)
 	movl %edx, %ecx
 	addl %esi, %ebx
 	adcl %edi, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 3f)
+#endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%ebp)
 	jne 1b
@@ -184,6 +260,7 @@ ENTRY(atomic64_add_unless_cx8)
 	CFI_ADJUST_CFA_OFFSET -8
 	RESTORE ebx
 	RESTORE ebp
+	pax_force_retaddr
 	ret
 4:
 	cmpl %edx, 4(%esp)
@@ -206,6 +283,13 @@ ENTRY(atomic64_inc_not_zero_cx8)
 	movl %edx, %ecx
 	addl $1, %ebx
 	adcl $0, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 3f)
+#endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
 	jne 1b
@@ -213,6 +297,7 @@ ENTRY(atomic64_inc_not_zero_cx8)
 	movl $1, %eax
 3:
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 4:
 	testl %edx, %edx
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/checksum_32.S linux-3.2.22-g-v/arch/x86/lib/checksum_32.S
--- linux-3.2.22/arch/x86/lib/checksum_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/checksum_32.S	2012-07-11 20:20:37.107450394 +0200
@@ -28,7 +28,8 @@
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
 #include <asm/errno.h>
-				
+#include <asm/segment.h>
+
 /*
  * computes a partial checksum, e.g. for TCP/UDP fragments
  */
@@ -296,9 +297,24 @@ unsigned int csum_partial_copy_generic (
 
 #define ARGBASE 16		
 #define FP		12
-		
-ENTRY(csum_partial_copy_generic)
+
+ENTRY(csum_partial_copy_generic_to_user)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %es
+	jmp csum_partial_copy_generic
+#endif
+
+ENTRY(csum_partial_copy_generic_from_user)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %ds
+#endif
+
+ENTRY(csum_partial_copy_generic)
 	subl  $4,%esp	
 	CFI_ADJUST_CFA_OFFSET 4
 	pushl_cfi %edi
@@ -320,7 +336,7 @@ ENTRY(csum_partial_copy_generic)
 	jmp 4f
 SRC(1:	movw (%esi), %bx	)
 	addl $2, %esi
-DST(	movw %bx, (%edi)	)
+DST(	movw %bx, %es:(%edi)	)
 	addl $2, %edi
 	addw %bx, %ax	
 	adcl $0, %eax
@@ -332,30 +348,30 @@ DST(	movw %bx, (%edi)	)
 SRC(1:	movl (%esi), %ebx	)
 SRC(	movl 4(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, (%edi)	)
+DST(	movl %ebx, %es:(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 4(%edi)	)
+DST(	movl %edx, %es:4(%edi)	)
 
 SRC(	movl 8(%esi), %ebx	)
 SRC(	movl 12(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 8(%edi)	)
+DST(	movl %ebx, %es:8(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 12(%edi)	)
+DST(	movl %edx, %es:12(%edi)	)
 
 SRC(	movl 16(%esi), %ebx 	)
 SRC(	movl 20(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 16(%edi)	)
+DST(	movl %ebx, %es:16(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 20(%edi)	)
+DST(	movl %edx, %es:20(%edi)	)
 
 SRC(	movl 24(%esi), %ebx	)
 SRC(	movl 28(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 24(%edi)	)
+DST(	movl %ebx, %es:24(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 28(%edi)	)
+DST(	movl %edx, %es:28(%edi)	)
 
 	lea 32(%esi), %esi
 	lea 32(%edi), %edi
@@ -369,7 +385,7 @@ DST(	movl %edx, 28(%edi)	)
 	shrl $2, %edx			# This clears CF
 SRC(3:	movl (%esi), %ebx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, (%edi)	)
+DST(	movl %ebx, %es:(%edi)	)
 	lea 4(%esi), %esi
 	lea 4(%edi), %edi
 	dec %edx
@@ -381,12 +397,12 @@ DST(	movl %ebx, (%edi)	)
 	jb 5f
 SRC(	movw (%esi), %cx	)
 	leal 2(%esi), %esi
-DST(	movw %cx, (%edi)	)
+DST(	movw %cx, %es:(%edi)	)
 	leal 2(%edi), %edi
 	je 6f
 	shll $16,%ecx
 SRC(5:	movb (%esi), %cl	)
-DST(	movb %cl, (%edi)	)
+DST(	movb %cl, %es:(%edi)	)
 6:	addl %ecx, %eax
 	adcl $0, %eax
 7:
@@ -397,7 +413,7 @@ DST(	movb %cl, (%edi)	)
 
 6001:
 	movl ARGBASE+20(%esp), %ebx	# src_err_ptr
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 
 	# zero the complete destination - computing the rest
 	# is too much work 
@@ -410,11 +426,15 @@ DST(	movb %cl, (%edi)	)
 
 6002:
 	movl ARGBASE+24(%esp), %ebx	# dst_err_ptr
-	movl $-EFAULT,(%ebx)
+	movl $-EFAULT,%ss:(%ebx)
 	jmp 5000b
 
 .previous
 
+	pushl_cfi %ss
+	popl_cfi %ds
+	pushl_cfi %ss
+	popl_cfi %es
 	popl_cfi %ebx
 	CFI_RESTORE ebx
 	popl_cfi %esi
@@ -424,26 +444,43 @@ DST(	movb %cl, (%edi)	)
 	popl_cfi %ecx			# equivalent to addl $4,%esp
 	ret	
 	CFI_ENDPROC
-ENDPROC(csum_partial_copy_generic)
+ENDPROC(csum_partial_copy_generic_to_user)
 
 #else
 
 /* Version for PentiumII/PPro */
 
 #define ROUND1(x) \
+	nop; nop; nop;				\
 	SRC(movl x(%esi), %ebx	)	;	\
 	addl %ebx, %eax			;	\
-	DST(movl %ebx, x(%edi)	)	; 
+	DST(movl %ebx, %es:x(%edi))	;
 
 #define ROUND(x) \
+	nop; nop; nop;				\
 	SRC(movl x(%esi), %ebx	)	;	\
 	adcl %ebx, %eax			;	\
-	DST(movl %ebx, x(%edi)	)	;
+	DST(movl %ebx, %es:x(%edi))	;
 
 #define ARGBASE 12
-		
-ENTRY(csum_partial_copy_generic)
+
+ENTRY(csum_partial_copy_generic_to_user)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %es
+	jmp csum_partial_copy_generic
+#endif
+
+ENTRY(csum_partial_copy_generic_from_user)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %ds
+#endif
+
+ENTRY(csum_partial_copy_generic)
 	pushl_cfi %ebx
 	CFI_REL_OFFSET ebx, 0
 	pushl_cfi %edi
@@ -464,7 +501,7 @@ ENTRY(csum_partial_copy_generic)
 	subl %ebx, %edi  
 	lea  -1(%esi),%edx
 	andl $-32,%edx
-	lea 3f(%ebx,%ebx), %ebx
+	lea 3f(%ebx,%ebx,2), %ebx
 	testl %esi, %esi 
 	jmp *%ebx
 1:	addl $64,%esi
@@ -485,19 +522,19 @@ ENTRY(csum_partial_copy_generic)
 	jb 5f
 SRC(	movw (%esi), %dx         )
 	leal 2(%esi), %esi
-DST(	movw %dx, (%edi)         )
+DST(	movw %dx, %es:(%edi)     )
 	leal 2(%edi), %edi
 	je 6f
 	shll $16,%edx
 5:
 SRC(	movb (%esi), %dl         )
-DST(	movb %dl, (%edi)         )
+DST(	movb %dl, %es:(%edi)     )
 6:	addl %edx, %eax
 	adcl $0, %eax
 7:
 .section .fixup, "ax"
 6001:	movl	ARGBASE+20(%esp), %ebx	# src_err_ptr	
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 	# zero the complete destination (computing the rest is too much work)
 	movl ARGBASE+8(%esp),%edi	# dst
 	movl ARGBASE+12(%esp),%ecx	# len
@@ -505,10 +542,17 @@ DST(	movb %dl, (%edi)         )
 	rep; stosb
 	jmp 7b
 6002:	movl ARGBASE+24(%esp), %ebx	# dst_err_ptr
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 	jmp  7b			
 .previous				
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %ss
+	popl_cfi %ds
+	pushl_cfi %ss
+	popl_cfi %es
+#endif
+
 	popl_cfi %esi
 	CFI_RESTORE esi
 	popl_cfi %edi
@@ -517,7 +561,7 @@ DST(	movb %dl, (%edi)         )
 	CFI_RESTORE ebx
 	ret
 	CFI_ENDPROC
-ENDPROC(csum_partial_copy_generic)
+ENDPROC(csum_partial_copy_generic_to_user)
 				
 #undef ROUND
 #undef ROUND1		
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/clear_page_64.S linux-3.2.22-g-v/arch/x86/lib/clear_page_64.S
--- linux-3.2.22/arch/x86/lib/clear_page_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/clear_page_64.S	2012-07-11 20:20:37.110609593 +0200
@@ -11,6 +11,7 @@ ENTRY(clear_page_c)
 	movl $4096/8,%ecx
 	xorl %eax,%eax
 	rep stosq
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(clear_page_c)
@@ -20,6 +21,7 @@ ENTRY(clear_page_c_e)
 	movl $4096,%ecx
 	xorl %eax,%eax
 	rep stosb
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(clear_page_c_e)
@@ -43,6 +45,7 @@ ENTRY(clear_page)
 	leaq	64(%rdi),%rdi
 	jnz	.Lloop
 	nop
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 .Lclear_page_end:
@@ -58,7 +61,7 @@ ENDPROC(clear_page)
 
 #include <asm/cpufeature.h>
 
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 1:	.byte 0xeb					/* jmp <disp8> */
 	.byte (clear_page_c - clear_page) - (2f - 1b)	/* offset */
 2:	.byte 0xeb					/* jmp <disp8> */
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/cmpxchg16b_emu.S linux-3.2.22-g-v/arch/x86/lib/cmpxchg16b_emu.S
--- linux-3.2.22/arch/x86/lib/cmpxchg16b_emu.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/cmpxchg16b_emu.S	2012-07-11 20:20:37.110609593 +0200
@@ -53,11 +53,13 @@ this_cpu_cmpxchg16b_emu:
 
 	popf
 	mov $1, %al
+	pax_force_retaddr
 	ret
 
  not_same:
 	popf
 	xor %al,%al
+	pax_force_retaddr
 	ret
 
 CFI_ENDPROC
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/copy_page_64.S linux-3.2.22-g-v/arch/x86/lib/copy_page_64.S
--- linux-3.2.22/arch/x86/lib/copy_page_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/copy_page_64.S	2012-07-11 20:20:37.110609593 +0200
@@ -9,6 +9,7 @@ copy_page_c:
 	CFI_STARTPROC
 	movl $4096/8,%ecx
 	rep movsq
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(copy_page_c)
@@ -39,7 +40,7 @@ ENTRY(copy_page)
 	movq     16 (%rsi), %rdx
 	movq     24 (%rsi), %r8
 	movq     32 (%rsi), %r9
-	movq     40 (%rsi), %r10
+	movq     40 (%rsi), %r13
 	movq     48 (%rsi), %r11
 	movq     56 (%rsi), %r12
 
@@ -50,7 +51,7 @@ ENTRY(copy_page)
 	movq     %rdx, 16 (%rdi)
 	movq     %r8,  24 (%rdi)
 	movq     %r9,  32 (%rdi)
-	movq     %r10, 40 (%rdi)
+	movq     %r13, 40 (%rdi)
 	movq     %r11, 48 (%rdi)
 	movq     %r12, 56 (%rdi)
 
@@ -69,7 +70,7 @@ ENTRY(copy_page)
 	movq     16 (%rsi), %rdx
 	movq     24 (%rsi), %r8
 	movq     32 (%rsi), %r9
-	movq     40 (%rsi), %r10
+	movq     40 (%rsi), %r13
 	movq     48 (%rsi), %r11
 	movq     56 (%rsi), %r12
 
@@ -78,7 +79,7 @@ ENTRY(copy_page)
 	movq     %rdx, 16 (%rdi)
 	movq     %r8,  24 (%rdi)
 	movq     %r9,  32 (%rdi)
-	movq     %r10, 40 (%rdi)
+	movq     %r13, 40 (%rdi)
 	movq     %r11, 48 (%rdi)
 	movq     %r12, 56 (%rdi)
 
@@ -95,6 +96,7 @@ ENTRY(copy_page)
 	CFI_RESTORE r13
 	addq	$3*8,%rsp
 	CFI_ADJUST_CFA_OFFSET -3*8
+	pax_force_retaddr
 	ret
 .Lcopy_page_end:
 	CFI_ENDPROC
@@ -105,7 +107,7 @@ ENDPROC(copy_page)
 
 #include <asm/cpufeature.h>
 
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 1:	.byte 0xeb					/* jmp <disp8> */
 	.byte (copy_page_c - copy_page) - (2f - 1b)	/* offset */
 2:
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/copy_user_64.S linux-3.2.22-g-v/arch/x86/lib/copy_user_64.S
--- linux-3.2.22/arch/x86/lib/copy_user_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/copy_user_64.S	2012-07-11 20:20:37.110609593 +0200
@@ -16,6 +16,7 @@
 #include <asm/thread_info.h>
 #include <asm/cpufeature.h>
 #include <asm/alternative-asm.h>
+#include <asm/pgtable.h>
 
 /*
  * By placing feature2 after feature1 in altinstructions section, we logically
@@ -29,7 +30,7 @@
 	.byte 0xe9	/* 32bit jump */
 	.long \orig-1f	/* by default jump to orig */
 1:
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 2:	.byte 0xe9			/* near jump with 32bit immediate */
 	.long \alt1-1b /* offset */   /* or alternatively to alt1 */
 3:	.byte 0xe9			/* near jump with 32bit immediate */
@@ -71,47 +72,20 @@
 #endif
 	.endm
 
-/* Standard copy_to_user with segment limit checking */
-ENTRY(_copy_to_user)
-	CFI_STARTPROC
-	GET_THREAD_INFO(%rax)
-	movq %rdi,%rcx
-	addq %rdx,%rcx
-	jc bad_to_user
-	cmpq TI_addr_limit(%rax),%rcx
-	ja bad_to_user
-	ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS,	\
-		copy_user_generic_unrolled,copy_user_generic_string,	\
-		copy_user_enhanced_fast_string
-	CFI_ENDPROC
-ENDPROC(_copy_to_user)
-
-/* Standard copy_from_user with segment limit checking */
-ENTRY(_copy_from_user)
-	CFI_STARTPROC
-	GET_THREAD_INFO(%rax)
-	movq %rsi,%rcx
-	addq %rdx,%rcx
-	jc bad_from_user
-	cmpq TI_addr_limit(%rax),%rcx
-	ja bad_from_user
-	ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS,	\
-		copy_user_generic_unrolled,copy_user_generic_string,	\
-		copy_user_enhanced_fast_string
-	CFI_ENDPROC
-ENDPROC(_copy_from_user)
-
 	.section .fixup,"ax"
 	/* must zero dest */
 ENTRY(bad_from_user)
 bad_from_user:
 	CFI_STARTPROC
+	testl %edx,%edx
+	js bad_to_user
 	movl %edx,%ecx
 	xorl %eax,%eax
 	rep
 	stosb
 bad_to_user:
 	movl %edx,%eax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(bad_from_user)
@@ -141,19 +115,19 @@ ENTRY(copy_user_generic_unrolled)
 	jz 17f
 1:	movq (%rsi),%r8
 2:	movq 1*8(%rsi),%r9
-3:	movq 2*8(%rsi),%r10
+3:	movq 2*8(%rsi),%rax
 4:	movq 3*8(%rsi),%r11
 5:	movq %r8,(%rdi)
 6:	movq %r9,1*8(%rdi)
-7:	movq %r10,2*8(%rdi)
+7:	movq %rax,2*8(%rdi)
 8:	movq %r11,3*8(%rdi)
 9:	movq 4*8(%rsi),%r8
 10:	movq 5*8(%rsi),%r9
-11:	movq 6*8(%rsi),%r10
+11:	movq 6*8(%rsi),%rax
 12:	movq 7*8(%rsi),%r11
 13:	movq %r8,4*8(%rdi)
 14:	movq %r9,5*8(%rdi)
-15:	movq %r10,6*8(%rdi)
+15:	movq %rax,6*8(%rdi)
 16:	movq %r11,7*8(%rdi)
 	leaq 64(%rsi),%rsi
 	leaq 64(%rdi),%rdi
@@ -179,6 +153,7 @@ ENTRY(copy_user_generic_unrolled)
 	decl %ecx
 	jnz 21b
 23:	xor %eax,%eax
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
@@ -251,6 +226,7 @@ ENTRY(copy_user_generic_string)
 3:	rep
 	movsb
 4:	xorl %eax,%eax
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
@@ -287,6 +263,7 @@ ENTRY(copy_user_enhanced_fast_string)
 1:	rep
 	movsb
 2:	xorl %eax,%eax
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/copy_user_nocache_64.S linux-3.2.22-g-v/arch/x86/lib/copy_user_nocache_64.S
--- linux-3.2.22/arch/x86/lib/copy_user_nocache_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/copy_user_nocache_64.S	2012-07-11 20:20:37.110609593 +0200
@@ -8,12 +8,14 @@
 
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 #define FIX_ALIGNMENT 1
 
 #include <asm/current.h>
 #include <asm/asm-offsets.h>
 #include <asm/thread_info.h>
+#include <asm/pgtable.h>
 
 	.macro ALIGN_DESTINATION
 #ifdef FIX_ALIGNMENT
@@ -50,6 +52,15 @@
  */
 ENTRY(__copy_user_nocache)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov $PAX_USER_SHADOW_BASE,%rcx
+	cmp %rcx,%rsi
+	jae 1f
+	add %rcx,%rsi
+1:
+#endif
+
 	cmpl $8,%edx
 	jb 20f		/* less then 8 bytes, go to byte copy loop */
 	ALIGN_DESTINATION
@@ -59,19 +70,19 @@ ENTRY(__copy_user_nocache)
 	jz 17f
 1:	movq (%rsi),%r8
 2:	movq 1*8(%rsi),%r9
-3:	movq 2*8(%rsi),%r10
+3:	movq 2*8(%rsi),%rax
 4:	movq 3*8(%rsi),%r11
 5:	movnti %r8,(%rdi)
 6:	movnti %r9,1*8(%rdi)
-7:	movnti %r10,2*8(%rdi)
+7:	movnti %rax,2*8(%rdi)
 8:	movnti %r11,3*8(%rdi)
 9:	movq 4*8(%rsi),%r8
 10:	movq 5*8(%rsi),%r9
-11:	movq 6*8(%rsi),%r10
+11:	movq 6*8(%rsi),%rax
 12:	movq 7*8(%rsi),%r11
 13:	movnti %r8,4*8(%rdi)
 14:	movnti %r9,5*8(%rdi)
-15:	movnti %r10,6*8(%rdi)
+15:	movnti %rax,6*8(%rdi)
 16:	movnti %r11,7*8(%rdi)
 	leaq 64(%rsi),%rsi
 	leaq 64(%rdi),%rdi
@@ -98,6 +109,7 @@ ENTRY(__copy_user_nocache)
 	jnz 21b
 23:	xorl %eax,%eax
 	sfence
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/csum-copy_64.S linux-3.2.22-g-v/arch/x86/lib/csum-copy_64.S
--- linux-3.2.22/arch/x86/lib/csum-copy_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/csum-copy_64.S	2012-07-11 20:20:37.110609593 +0200
@@ -8,6 +8,7 @@
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
 #include <asm/errno.h>
+#include <asm/alternative-asm.h>
 
 /*
  * Checksum copy with exception handling.
@@ -228,6 +229,7 @@ ENTRY(csum_partial_copy_generic)
 	CFI_RESTORE rbp
 	addq $7*8, %rsp
 	CFI_ADJUST_CFA_OFFSET -7*8
+	pax_force_retaddr 0, 1
 	ret
 	CFI_RESTORE_STATE
 
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/csum-wrappers_64.c linux-3.2.22-g-v/arch/x86/lib/csum-wrappers_64.c
--- linux-3.2.22/arch/x86/lib/csum-wrappers_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/csum-wrappers_64.c	2012-07-11 20:20:37.110609593 +0200
@@ -52,7 +52,13 @@ csum_partial_copy_from_user(const void _
 			len -= 2;
 		}
 	}
-	isum = csum_partial_copy_generic((__force const void *)src,
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+		src += PAX_USER_SHADOW_BASE;
+#endif
+
+	isum = csum_partial_copy_generic((const void __force_kernel *)src,
 				dst, len, isum, errp, NULL);
 	if (unlikely(*errp))
 		goto out_err;
@@ -105,7 +111,13 @@ csum_partial_copy_to_user(const void *sr
 	}
 
 	*errp = 0;
-	return csum_partial_copy_generic(src, (void __force *)dst,
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if ((unsigned long)dst < PAX_USER_SHADOW_BASE)
+		dst += PAX_USER_SHADOW_BASE;
+#endif
+
+	return csum_partial_copy_generic(src, (void __force_kernel *)dst,
 					 len, isum, NULL, errp);
 }
 EXPORT_SYMBOL(csum_partial_copy_to_user);
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/getuser.S linux-3.2.22-g-v/arch/x86/lib/getuser.S
--- linux-3.2.22/arch/x86/lib/getuser.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/getuser.S	2012-07-11 20:20:37.114093847 +0200
@@ -33,15 +33,38 @@
 #include <asm/asm-offsets.h>
 #include <asm/thread_info.h>
 #include <asm/asm.h>
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg gs;
+#else
+#define __copyuser_seg
+#endif
 
 	.text
 ENTRY(__get_user_1)
 	CFI_STARTPROC
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
-1:	movzb (%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+1:	__copyuser_seg movzb (%_ASM_AX),%edx
 	xor %eax,%eax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_1)
@@ -49,12 +72,26 @@ ENDPROC(__get_user_1)
 ENTRY(__get_user_2)
 	CFI_STARTPROC
 	add $1,%_ASM_AX
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	jc bad_get_user
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
-2:	movzwl -1(%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+2:	__copyuser_seg movzwl -1(%_ASM_AX),%edx
 	xor %eax,%eax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_2)
@@ -62,12 +99,26 @@ ENDPROC(__get_user_2)
 ENTRY(__get_user_4)
 	CFI_STARTPROC
 	add $3,%_ASM_AX
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	jc bad_get_user
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
-3:	mov -3(%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+3:	__copyuser_seg mov -3(%_ASM_AX),%edx
 	xor %eax,%eax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_4)
@@ -80,8 +131,18 @@ ENTRY(__get_user_8)
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae	bad_get_user
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov $PAX_USER_SHADOW_BASE,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
 4:	movq -7(%_ASM_AX),%_ASM_DX
 	xor %eax,%eax
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_8)
@@ -91,6 +152,7 @@ bad_get_user:
 	CFI_STARTPROC
 	xor %edx,%edx
 	mov $(-EFAULT),%_ASM_AX
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(bad_get_user)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/insn.c linux-3.2.22-g-v/arch/x86/lib/insn.c
--- linux-3.2.22/arch/x86/lib/insn.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/insn.c	2012-07-11 20:20:37.114093847 +0200
@@ -21,6 +21,11 @@
 #include <linux/string.h>
 #include <asm/inat.h>
 #include <asm/insn.h>
+#ifdef __KERNEL__
+#include <asm/pgtable_types.h>
+#else
+#define ktla_ktva(addr) addr
+#endif
 
 /* Verify next sizeof(t) bytes can be on the same instruction */
 #define validate_next(t, insn, n)	\
@@ -49,8 +54,8 @@
 void insn_init(struct insn *insn, const void *kaddr, int x86_64)
 {
 	memset(insn, 0, sizeof(*insn));
-	insn->kaddr = kaddr;
-	insn->next_byte = kaddr;
+	insn->kaddr = ktla_ktva(kaddr);
+	insn->next_byte = ktla_ktva(kaddr);
 	insn->x86_64 = x86_64 ? 1 : 0;
 	insn->opnd_bytes = 4;
 	if (x86_64)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/iomap_copy_64.S linux-3.2.22-g-v/arch/x86/lib/iomap_copy_64.S
--- linux-3.2.22/arch/x86/lib/iomap_copy_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/iomap_copy_64.S	2012-07-11 20:20:37.114093847 +0200
@@ -17,6 +17,7 @@
 
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 /*
  * override generic version in lib/iomap_copy.c
@@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy)
 	CFI_STARTPROC
 	movl %edx,%ecx
 	rep movsd
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__iowrite32_copy)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/memcpy_64.S linux-3.2.22-g-v/arch/x86/lib/memcpy_64.S
--- linux-3.2.22/arch/x86/lib/memcpy_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/memcpy_64.S	2012-07-11 20:20:37.114093847 +0200
@@ -34,6 +34,7 @@
 	rep movsq
 	movl %edx, %ecx
 	rep movsb
+	pax_force_retaddr
 	ret
 .Lmemcpy_e:
 	.previous
@@ -51,6 +52,7 @@
 
 	movl %edx, %ecx
 	rep movsb
+	pax_force_retaddr
 	ret
 .Lmemcpy_e_e:
 	.previous
@@ -81,13 +83,13 @@ ENTRY(memcpy)
 	 */
 	movq 0*8(%rsi),	%r8
 	movq 1*8(%rsi),	%r9
-	movq 2*8(%rsi),	%r10
+	movq 2*8(%rsi),	%rcx
 	movq 3*8(%rsi),	%r11
 	leaq 4*8(%rsi),	%rsi
 
 	movq %r8,	0*8(%rdi)
 	movq %r9,	1*8(%rdi)
-	movq %r10,	2*8(%rdi)
+	movq %rcx,	2*8(%rdi)
 	movq %r11,	3*8(%rdi)
 	leaq 4*8(%rdi),	%rdi
 	jae  .Lcopy_forward_loop
@@ -110,12 +112,12 @@ ENTRY(memcpy)
 	subq $0x20,	%rdx
 	movq -1*8(%rsi),	%r8
 	movq -2*8(%rsi),	%r9
-	movq -3*8(%rsi),	%r10
+	movq -3*8(%rsi),	%rcx
 	movq -4*8(%rsi),	%r11
 	leaq -4*8(%rsi),	%rsi
 	movq %r8,		-1*8(%rdi)
 	movq %r9,		-2*8(%rdi)
-	movq %r10,		-3*8(%rdi)
+	movq %rcx,		-3*8(%rdi)
 	movq %r11,		-4*8(%rdi)
 	leaq -4*8(%rdi),	%rdi
 	jae  .Lcopy_backward_loop
@@ -135,12 +137,13 @@ ENTRY(memcpy)
 	 */
 	movq 0*8(%rsi), %r8
 	movq 1*8(%rsi),	%r9
-	movq -2*8(%rsi, %rdx),	%r10
+	movq -2*8(%rsi, %rdx),	%rcx
 	movq -1*8(%rsi, %rdx),	%r11
 	movq %r8,	0*8(%rdi)
 	movq %r9,	1*8(%rdi)
-	movq %r10,	-2*8(%rdi, %rdx)
+	movq %rcx,	-2*8(%rdi, %rdx)
 	movq %r11,	-1*8(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_16bytes:
@@ -153,6 +156,7 @@ ENTRY(memcpy)
 	movq -1*8(%rsi, %rdx),	%r9
 	movq %r8,	0*8(%rdi)
 	movq %r9,	-1*8(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_8bytes:
@@ -166,6 +170,7 @@ ENTRY(memcpy)
 	movl -4(%rsi, %rdx), %r8d
 	movl %ecx, (%rdi)
 	movl %r8d, -4(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_3bytes:
@@ -183,6 +188,7 @@ ENTRY(memcpy)
 	jnz .Lloop_1
 
 .Lend:
+	pax_force_retaddr
 	retq
 	CFI_ENDPROC
 ENDPROC(memcpy)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/memmove_64.S linux-3.2.22-g-v/arch/x86/lib/memmove_64.S
--- linux-3.2.22/arch/x86/lib/memmove_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/memmove_64.S	2012-07-11 20:20:37.114093847 +0200
@@ -61,13 +61,13 @@ ENTRY(memmove)
 5:
 	sub $0x20, %rdx
 	movq 0*8(%rsi), %r11
-	movq 1*8(%rsi), %r10
+	movq 1*8(%rsi), %rcx
 	movq 2*8(%rsi), %r9
 	movq 3*8(%rsi), %r8
 	leaq 4*8(%rsi), %rsi
 
 	movq %r11, 0*8(%rdi)
-	movq %r10, 1*8(%rdi)
+	movq %rcx, 1*8(%rdi)
 	movq %r9, 2*8(%rdi)
 	movq %r8, 3*8(%rdi)
 	leaq 4*8(%rdi), %rdi
@@ -81,10 +81,10 @@ ENTRY(memmove)
 4:
 	movq %rdx, %rcx
 	movq -8(%rsi, %rdx), %r11
-	lea -8(%rdi, %rdx), %r10
+	lea -8(%rdi, %rdx), %r9
 	shrq $3, %rcx
 	rep movsq
-	movq %r11, (%r10)
+	movq %r11, (%r9)
 	jmp 13f
 .Lmemmove_end_forward:
 
@@ -95,14 +95,14 @@ ENTRY(memmove)
 7:
 	movq %rdx, %rcx
 	movq (%rsi), %r11
-	movq %rdi, %r10
+	movq %rdi, %r9
 	leaq -8(%rsi, %rdx), %rsi
 	leaq -8(%rdi, %rdx), %rdi
 	shrq $3, %rcx
 	std
 	rep movsq
 	cld
-	movq %r11, (%r10)
+	movq %r11, (%r9)
 	jmp 13f
 
 	/*
@@ -127,13 +127,13 @@ ENTRY(memmove)
 8:
 	subq $0x20, %rdx
 	movq -1*8(%rsi), %r11
-	movq -2*8(%rsi), %r10
+	movq -2*8(%rsi), %rcx
 	movq -3*8(%rsi), %r9
 	movq -4*8(%rsi), %r8
 	leaq -4*8(%rsi), %rsi
 
 	movq %r11, -1*8(%rdi)
-	movq %r10, -2*8(%rdi)
+	movq %rcx, -2*8(%rdi)
 	movq %r9, -3*8(%rdi)
 	movq %r8, -4*8(%rdi)
 	leaq -4*8(%rdi), %rdi
@@ -151,11 +151,11 @@ ENTRY(memmove)
 	 * Move data from 16 bytes to 31 bytes.
 	 */
 	movq 0*8(%rsi), %r11
-	movq 1*8(%rsi), %r10
+	movq 1*8(%rsi), %rcx
 	movq -2*8(%rsi, %rdx), %r9
 	movq -1*8(%rsi, %rdx), %r8
 	movq %r11, 0*8(%rdi)
-	movq %r10, 1*8(%rdi)
+	movq %rcx, 1*8(%rdi)
 	movq %r9, -2*8(%rdi, %rdx)
 	movq %r8, -1*8(%rdi, %rdx)
 	jmp 13f
@@ -167,9 +167,9 @@ ENTRY(memmove)
 	 * Move data from 8 bytes to 15 bytes.
 	 */
 	movq 0*8(%rsi), %r11
-	movq -1*8(%rsi, %rdx), %r10
+	movq -1*8(%rsi, %rdx), %r9
 	movq %r11, 0*8(%rdi)
-	movq %r10, -1*8(%rdi, %rdx)
+	movq %r9, -1*8(%rdi, %rdx)
 	jmp 13f
 10:
 	cmpq $4, %rdx
@@ -178,9 +178,9 @@ ENTRY(memmove)
 	 * Move data from 4 bytes to 7 bytes.
 	 */
 	movl (%rsi), %r11d
-	movl -4(%rsi, %rdx), %r10d
+	movl -4(%rsi, %rdx), %r9d
 	movl %r11d, (%rdi)
-	movl %r10d, -4(%rdi, %rdx)
+	movl %r9d, -4(%rdi, %rdx)
 	jmp 13f
 11:
 	cmp $2, %rdx
@@ -189,9 +189,9 @@ ENTRY(memmove)
 	 * Move data from 2 bytes to 3 bytes.
 	 */
 	movw (%rsi), %r11w
-	movw -2(%rsi, %rdx), %r10w
+	movw -2(%rsi, %rdx), %r9w
 	movw %r11w, (%rdi)
-	movw %r10w, -2(%rdi, %rdx)
+	movw %r9w, -2(%rdi, %rdx)
 	jmp 13f
 12:
 	cmp $1, %rdx
@@ -202,6 +202,7 @@ ENTRY(memmove)
 	movb (%rsi), %r11b
 	movb %r11b, (%rdi)
 13:
+	pax_force_retaddr
 	retq
 	CFI_ENDPROC
 
@@ -210,6 +211,7 @@ ENTRY(memmove)
 	/* Forward moving data. */
 	movq %rdx, %rcx
 	rep movsb
+	pax_force_retaddr
 	retq
 .Lmemmove_end_forward_efs:
 	.previous
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/memset_64.S linux-3.2.22-g-v/arch/x86/lib/memset_64.S
--- linux-3.2.22/arch/x86/lib/memset_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/memset_64.S	2012-07-11 20:20:37.114093847 +0200
@@ -31,6 +31,7 @@
 	movl %r8d,%ecx
 	rep stosb
 	movq %r9,%rax
+	pax_force_retaddr
 	ret
 .Lmemset_e:
 	.previous
@@ -53,6 +54,7 @@
 	movl %edx,%ecx
 	rep stosb
 	movq %r9,%rax
+	pax_force_retaddr
 	ret
 .Lmemset_e_e:
 	.previous
@@ -60,13 +62,13 @@
 ENTRY(memset)
 ENTRY(__memset)
 	CFI_STARTPROC
-	movq %rdi,%r10
 	movq %rdx,%r11
 
 	/* expand byte value  */
 	movzbl %sil,%ecx
 	movabs $0x0101010101010101,%rax
 	mul    %rcx		/* with rax, clobbers rdx */
+	movq  %rdi,%rdx
 
 	/* align dst */
 	movl  %edi,%r9d
@@ -120,7 +122,8 @@ ENTRY(__memset)
 	jnz     .Lloop_1
 
 .Lende:
-	movq	%r10,%rax
+	movq	%rdx,%rax
+	pax_force_retaddr
 	ret
 
 	CFI_RESTORE_STATE
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/mmx_32.c linux-3.2.22-g-v/arch/x86/lib/mmx_32.c
--- linux-3.2.22/arch/x86/lib/mmx_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/mmx_32.c	2012-07-11 20:20:37.117399664 +0200
@@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void *
 {
 	void *p;
 	int i;
+	unsigned long cr0;
 
 	if (unlikely(in_interrupt()))
 		return __memcpy(to, from, len);
@@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void *
 	kernel_fpu_begin();
 
 	__asm__ __volatile__ (
-		"1: prefetch (%0)\n"		/* This set is 28 bytes */
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"		/* This set is 28 bytes */
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from));
+			: "=&r" (cr0) : "r" (from) : "ax");
 
 	for ( ; i > 5; i--) {
 		__asm__ __volatile__ (
-		"1:  prefetch 320(%0)\n"
-		"2:  movq (%0), %%mm0\n"
-		"  movq 8(%0), %%mm1\n"
-		"  movq 16(%0), %%mm2\n"
-		"  movq 24(%0), %%mm3\n"
-		"  movq %%mm0, (%1)\n"
-		"  movq %%mm1, 8(%1)\n"
-		"  movq %%mm2, 16(%1)\n"
-		"  movq %%mm3, 24(%1)\n"
-		"  movq 32(%0), %%mm0\n"
-		"  movq 40(%0), %%mm1\n"
-		"  movq 48(%0), %%mm2\n"
-		"  movq 56(%0), %%mm3\n"
-		"  movq %%mm0, 32(%1)\n"
-		"  movq %%mm1, 40(%1)\n"
-		"  movq %%mm2, 48(%1)\n"
-		"  movq %%mm3, 56(%1)\n"
+		"1:  prefetch 320(%1)\n"
+		"2:  movq (%1), %%mm0\n"
+		"  movq 8(%1), %%mm1\n"
+		"  movq 16(%1), %%mm2\n"
+		"  movq 24(%1), %%mm3\n"
+		"  movq %%mm0, (%2)\n"
+		"  movq %%mm1, 8(%2)\n"
+		"  movq %%mm2, 16(%2)\n"
+		"  movq %%mm3, 24(%2)\n"
+		"  movq 32(%1), %%mm0\n"
+		"  movq 40(%1), %%mm1\n"
+		"  movq 48(%1), %%mm2\n"
+		"  movq 56(%1), %%mm3\n"
+		"  movq %%mm0, 32(%2)\n"
+		"  movq %%mm1, 40(%2)\n"
+		"  movq %%mm2, 48(%2)\n"
+		"  movq %%mm3, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from), "r" (to) : "memory");
+			: "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
@@ -158,6 +187,7 @@ static void fast_clear_page(void *page)
 static void fast_copy_page(void *to, void *from)
 {
 	int i;
+	unsigned long cr0;
 
 	kernel_fpu_begin();
 
@@ -166,42 +196,70 @@ static void fast_copy_page(void *to, voi
 	 * but that is for later. -AV
 	 */
 	__asm__ __volatile__(
-		"1: prefetch (%0)\n"
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-			_ASM_EXTABLE(1b, 3b) : : "r" (from));
+			_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
 
 	for (i = 0; i < (4096-320)/64; i++) {
 		__asm__ __volatile__ (
-		"1: prefetch 320(%0)\n"
-		"2: movq (%0), %%mm0\n"
-		"   movntq %%mm0, (%1)\n"
-		"   movq 8(%0), %%mm1\n"
-		"   movntq %%mm1, 8(%1)\n"
-		"   movq 16(%0), %%mm2\n"
-		"   movntq %%mm2, 16(%1)\n"
-		"   movq 24(%0), %%mm3\n"
-		"   movntq %%mm3, 24(%1)\n"
-		"   movq 32(%0), %%mm4\n"
-		"   movntq %%mm4, 32(%1)\n"
-		"   movq 40(%0), %%mm5\n"
-		"   movntq %%mm5, 40(%1)\n"
-		"   movq 48(%0), %%mm6\n"
-		"   movntq %%mm6, 48(%1)\n"
-		"   movq 56(%0), %%mm7\n"
-		"   movntq %%mm7, 56(%1)\n"
+		"1: prefetch 320(%1)\n"
+		"2: movq (%1), %%mm0\n"
+		"   movntq %%mm0, (%2)\n"
+		"   movq 8(%1), %%mm1\n"
+		"   movntq %%mm1, 8(%2)\n"
+		"   movq 16(%1), %%mm2\n"
+		"   movntq %%mm2, 16(%2)\n"
+		"   movq 24(%1), %%mm3\n"
+		"   movntq %%mm3, 24(%2)\n"
+		"   movq 32(%1), %%mm4\n"
+		"   movntq %%mm4, 32(%2)\n"
+		"   movq 40(%1), %%mm5\n"
+		"   movntq %%mm5, 40(%2)\n"
+		"   movq 48(%1), %%mm6\n"
+		"   movntq %%mm6, 48(%2)\n"
+		"   movq 56(%1), %%mm7\n"
+		"   movntq %%mm7, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-		_ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory");
+		_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
@@ -280,47 +338,76 @@ static void fast_clear_page(void *page)
 static void fast_copy_page(void *to, void *from)
 {
 	int i;
+	unsigned long cr0;
 
 	kernel_fpu_begin();
 
 	__asm__ __volatile__ (
-		"1: prefetch (%0)\n"
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-			_ASM_EXTABLE(1b, 3b) : : "r" (from));
+			_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
 
 	for (i = 0; i < 4096/64; i++) {
 		__asm__ __volatile__ (
-		"1: prefetch 320(%0)\n"
-		"2: movq (%0), %%mm0\n"
-		"   movq 8(%0), %%mm1\n"
-		"   movq 16(%0), %%mm2\n"
-		"   movq 24(%0), %%mm3\n"
-		"   movq %%mm0, (%1)\n"
-		"   movq %%mm1, 8(%1)\n"
-		"   movq %%mm2, 16(%1)\n"
-		"   movq %%mm3, 24(%1)\n"
-		"   movq 32(%0), %%mm0\n"
-		"   movq 40(%0), %%mm1\n"
-		"   movq 48(%0), %%mm2\n"
-		"   movq 56(%0), %%mm3\n"
-		"   movq %%mm0, 32(%1)\n"
-		"   movq %%mm1, 40(%1)\n"
-		"   movq %%mm2, 48(%1)\n"
-		"   movq %%mm3, 56(%1)\n"
+		"1: prefetch 320(%1)\n"
+		"2: movq (%1), %%mm0\n"
+		"   movq 8(%1), %%mm1\n"
+		"   movq 16(%1), %%mm2\n"
+		"   movq 24(%1), %%mm3\n"
+		"   movq %%mm0, (%2)\n"
+		"   movq %%mm1, 8(%2)\n"
+		"   movq %%mm2, 16(%2)\n"
+		"   movq %%mm3, 24(%2)\n"
+		"   movq 32(%1), %%mm0\n"
+		"   movq 40(%1), %%mm1\n"
+		"   movq 48(%1), %%mm2\n"
+		"   movq 56(%1), %%mm3\n"
+		"   movq %%mm0, 32(%2)\n"
+		"   movq %%mm1, 40(%2)\n"
+		"   movq %%mm2, 48(%2)\n"
+		"   movq %%mm3, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from), "r" (to) : "memory");
+			: "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/msr-reg.S linux-3.2.22-g-v/arch/x86/lib/msr-reg.S
--- linux-3.2.22/arch/x86/lib/msr-reg.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/msr-reg.S	2012-07-11 20:20:37.117399664 +0200
@@ -3,6 +3,7 @@
 #include <asm/dwarf2.h>
 #include <asm/asm.h>
 #include <asm/msr.h>
+#include <asm/alternative-asm.h>
 
 #ifdef CONFIG_X86_64
 /*
@@ -16,7 +17,7 @@ ENTRY(native_\op\()_safe_regs)
 	CFI_STARTPROC
 	pushq_cfi %rbx
 	pushq_cfi %rbp
-	movq	%rdi, %r10	/* Save pointer */
+	movq	%rdi, %r9	/* Save pointer */
 	xorl	%r11d, %r11d	/* Return value */
 	movl    (%rdi), %eax
 	movl    4(%rdi), %ecx
@@ -27,16 +28,17 @@ ENTRY(native_\op\()_safe_regs)
 	movl    28(%rdi), %edi
 	CFI_REMEMBER_STATE
 1:	\op
-2:	movl    %eax, (%r10)
+2:	movl    %eax, (%r9)
 	movl	%r11d, %eax	/* Return value */
-	movl    %ecx, 4(%r10)
-	movl    %edx, 8(%r10)
-	movl    %ebx, 12(%r10)
-	movl    %ebp, 20(%r10)
-	movl    %esi, 24(%r10)
-	movl    %edi, 28(%r10)
+	movl    %ecx, 4(%r9)
+	movl    %edx, 8(%r9)
+	movl    %ebx, 12(%r9)
+	movl    %ebp, 20(%r9)
+	movl    %esi, 24(%r9)
+	movl    %edi, 28(%r9)
 	popq_cfi %rbp
 	popq_cfi %rbx
+	pax_force_retaddr
 	ret
 3:
 	CFI_RESTORE_STATE
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/putuser.S linux-3.2.22-g-v/arch/x86/lib/putuser.S
--- linux-3.2.22/arch/x86/lib/putuser.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/putuser.S	2012-07-11 20:20:37.117399664 +0200
@@ -15,7 +15,9 @@
 #include <asm/thread_info.h>
 #include <asm/errno.h>
 #include <asm/asm.h>
-
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
 
 /*
  * __put_user_X
@@ -29,52 +31,119 @@
  * as they get called from within inline assembly.
  */
 
-#define ENTER	CFI_STARTPROC ; \
-		GET_THREAD_INFO(%_ASM_BX)
-#define EXIT	ret ; \
+#define ENTER	CFI_STARTPROC
+#define EXIT	pax_force_retaddr; ret ; \
 		CFI_ENDPROC
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define _DEST %_ASM_CX,%_ASM_BX
+#else
+#define _DEST %_ASM_CX
+#endif
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg gs;
+#else
+#define __copyuser_seg
+#endif
+
 .text
 ENTRY(__put_user_1)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	cmp TI_addr_limit(%_ASM_BX),%_ASM_CX
 	jae bad_put_user
-1:	movb %al,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+1:	__copyuser_seg movb %al,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_1)
 
 ENTRY(__put_user_2)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $1,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
-2:	movw %ax,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+2:	__copyuser_seg movw %ax,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_2)
 
 ENTRY(__put_user_4)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $3,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
-3:	movl %eax,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+3:	__copyuser_seg movl %eax,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_4)
 
 ENTRY(__put_user_8)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $7,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
-4:	mov %_ASM_AX,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov $PAX_USER_SHADOW_BASE,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+4:	__copyuser_seg mov %_ASM_AX,(_DEST)
 #ifdef CONFIG_X86_32
-5:	movl %edx,4(%_ASM_CX)
+5:	__copyuser_seg movl %edx,4(_DEST)
 #endif
 	xor %eax,%eax
 	EXIT
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/rwlock.S linux-3.2.22-g-v/arch/x86/lib/rwlock.S
--- linux-3.2.22/arch/x86/lib/rwlock.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/rwlock.S	2012-07-11 20:20:37.117399664 +0200
@@ -16,13 +16,34 @@ ENTRY(__write_lock_failed)
 	FRAME
 0:	LOCK_PREFIX
 	WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 1:	rep; nop
 	cmpl	$WRITE_LOCK_CMP, (%__lock_ptr)
 	jne	1b
 	LOCK_PREFIX
 	WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 	jnz	0b
 	ENDFRAME
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(__write_lock_failed)
@@ -32,13 +53,34 @@ ENTRY(__read_lock_failed)
 	FRAME
 0:	LOCK_PREFIX
 	READ_LOCK_SIZE(inc) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	READ_LOCK_SIZE(dec) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 1:	rep; nop
 	READ_LOCK_SIZE(cmp) $1, (%__lock_ptr)
 	js	1b
 	LOCK_PREFIX
 	READ_LOCK_SIZE(dec) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	READ_LOCK_SIZE(inc) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 	js	0b
 	ENDFRAME
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(__read_lock_failed)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/rwsem.S linux-3.2.22-g-v/arch/x86/lib/rwsem.S
--- linux-3.2.22/arch/x86/lib/rwsem.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/rwsem.S	2012-07-11 20:20:37.117399664 +0200
@@ -94,6 +94,7 @@ ENTRY(call_rwsem_down_read_failed)
 	__ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
 	CFI_RESTORE __ASM_REG(dx)
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_down_read_failed)
@@ -104,6 +105,7 @@ ENTRY(call_rwsem_down_write_failed)
 	movq %rax,%rdi
 	call rwsem_down_write_failed
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_down_write_failed)
@@ -117,7 +119,8 @@ ENTRY(call_rwsem_wake)
 	movq %rax,%rdi
 	call rwsem_wake
 	restore_common_regs
-1:	ret
+1:	pax_force_retaddr
+	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_wake)
 
@@ -131,6 +134,7 @@ ENTRY(call_rwsem_downgrade_wake)
 	__ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
 	CFI_RESTORE __ASM_REG(dx)
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_downgrade_wake)
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/thunk_64.S linux-3.2.22-g-v/arch/x86/lib/thunk_64.S
--- linux-3.2.22/arch/x86/lib/thunk_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/thunk_64.S	2012-07-11 20:20:37.117399664 +0200
@@ -8,6 +8,7 @@
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
 #include <asm/calling.h>
+#include <asm/alternative-asm.h>
 
 	/* rdi:	arg1 ... normal C conventions. rax is saved/restored. */
 	.macro THUNK name, func, put_ret_addr_in_rdi=0
@@ -41,5 +42,6 @@
 	SAVE_ARGS
 restore:
 	RESTORE_ARGS
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/usercopy_32.c linux-3.2.22-g-v/arch/x86/lib/usercopy_32.c
--- linux-3.2.22/arch/x86/lib/usercopy_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/usercopy_32.c	2012-07-11 20:20:37.120623209 +0200
@@ -43,7 +43,7 @@ do {									   \
 	__asm__ __volatile__(						   \
 		"	testl %1,%1\n"					   \
 		"	jz 2f\n"					   \
-		"0:	lodsb\n"					   \
+		"0:	"__copyuser_seg"lodsb\n"			   \
 		"	stosb\n"					   \
 		"	testb %%al,%%al\n"				   \
 		"	jz 1f\n"					   \
@@ -128,10 +128,12 @@ do {									\
 	int __d0;							\
 	might_fault();							\
 	__asm__ __volatile__(						\
+		__COPYUSER_SET_ES					\
 		"0:	rep; stosl\n"					\
 		"	movl %2,%0\n"					\
 		"1:	rep; stosb\n"					\
 		"2:\n"							\
+		__COPYUSER_RESTORE_ES					\
 		".section .fixup,\"ax\"\n"				\
 		"3:	lea 0(%2,%0,4),%0\n"				\
 		"	jmp 2b\n"					\
@@ -200,6 +202,7 @@ long strnlen_user(const char __user *s, 
 	might_fault();
 
 	__asm__ __volatile__(
+		__COPYUSER_SET_ES
 		"	testl %0, %0\n"
 		"	jz 3f\n"
 		"	andl %0,%%ecx\n"
@@ -208,6 +211,7 @@ long strnlen_user(const char __user *s, 
 		"	subl %%ecx,%0\n"
 		"	addl %0,%%eax\n"
 		"1:\n"
+		__COPYUSER_RESTORE_ES
 		".section .fixup,\"ax\"\n"
 		"2:	xorl %%eax,%%eax\n"
 		"	jmp 1b\n"
@@ -227,7 +231,7 @@ EXPORT_SYMBOL(strnlen_user);
 
 #ifdef CONFIG_X86_INTEL_USERCOPY
 static unsigned long
-__copy_user_intel(void __user *to, const void *from, unsigned long size)
+__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size)
 {
 	int d0, d1;
 	__asm__ __volatile__(
@@ -239,36 +243,36 @@ __copy_user_intel(void __user *to, const
 		       "       .align 2,0x90\n"
 		       "3:     movl 0(%4), %%eax\n"
 		       "4:     movl 4(%4), %%edx\n"
-		       "5:     movl %%eax, 0(%3)\n"
-		       "6:     movl %%edx, 4(%3)\n"
+		       "5:     "__copyuser_seg" movl %%eax, 0(%3)\n"
+		       "6:     "__copyuser_seg" movl %%edx, 4(%3)\n"
 		       "7:     movl 8(%4), %%eax\n"
 		       "8:     movl 12(%4),%%edx\n"
-		       "9:     movl %%eax, 8(%3)\n"
-		       "10:    movl %%edx, 12(%3)\n"
+		       "9:     "__copyuser_seg" movl %%eax, 8(%3)\n"
+		       "10:    "__copyuser_seg" movl %%edx, 12(%3)\n"
 		       "11:    movl 16(%4), %%eax\n"
 		       "12:    movl 20(%4), %%edx\n"
-		       "13:    movl %%eax, 16(%3)\n"
-		       "14:    movl %%edx, 20(%3)\n"
+		       "13:    "__copyuser_seg" movl %%eax, 16(%3)\n"
+		       "14:    "__copyuser_seg" movl %%edx, 20(%3)\n"
 		       "15:    movl 24(%4), %%eax\n"
 		       "16:    movl 28(%4), %%edx\n"
-		       "17:    movl %%eax, 24(%3)\n"
-		       "18:    movl %%edx, 28(%3)\n"
+		       "17:    "__copyuser_seg" movl %%eax, 24(%3)\n"
+		       "18:    "__copyuser_seg" movl %%edx, 28(%3)\n"
 		       "19:    movl 32(%4), %%eax\n"
 		       "20:    movl 36(%4), %%edx\n"
-		       "21:    movl %%eax, 32(%3)\n"
-		       "22:    movl %%edx, 36(%3)\n"
+		       "21:    "__copyuser_seg" movl %%eax, 32(%3)\n"
+		       "22:    "__copyuser_seg" movl %%edx, 36(%3)\n"
 		       "23:    movl 40(%4), %%eax\n"
 		       "24:    movl 44(%4), %%edx\n"
-		       "25:    movl %%eax, 40(%3)\n"
-		       "26:    movl %%edx, 44(%3)\n"
+		       "25:    "__copyuser_seg" movl %%eax, 40(%3)\n"
+		       "26:    "__copyuser_seg" movl %%edx, 44(%3)\n"
 		       "27:    movl 48(%4), %%eax\n"
 		       "28:    movl 52(%4), %%edx\n"
-		       "29:    movl %%eax, 48(%3)\n"
-		       "30:    movl %%edx, 52(%3)\n"
+		       "29:    "__copyuser_seg" movl %%eax, 48(%3)\n"
+		       "30:    "__copyuser_seg" movl %%edx, 52(%3)\n"
 		       "31:    movl 56(%4), %%eax\n"
 		       "32:    movl 60(%4), %%edx\n"
-		       "33:    movl %%eax, 56(%3)\n"
-		       "34:    movl %%edx, 60(%3)\n"
+		       "33:    "__copyuser_seg" movl %%eax, 56(%3)\n"
+		       "34:    "__copyuser_seg" movl %%edx, 60(%3)\n"
 		       "       addl $-64, %0\n"
 		       "       addl $64, %4\n"
 		       "       addl $64, %3\n"
@@ -278,10 +282,12 @@ __copy_user_intel(void __user *to, const
 		       "       shrl  $2, %0\n"
 		       "       andl  $3, %%eax\n"
 		       "       cld\n"
+		       __COPYUSER_SET_ES
 		       "99:    rep; movsl\n"
 		       "36:    movl %%eax, %0\n"
 		       "37:    rep; movsb\n"
 		       "100:\n"
+		       __COPYUSER_RESTORE_ES
 		       ".section .fixup,\"ax\"\n"
 		       "101:   lea 0(%%eax,%0,4),%0\n"
 		       "       jmp 100b\n"
@@ -334,46 +340,155 @@ __copy_user_intel(void __user *to, const
 }
 
 static unsigned long
+__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size)
+{
+	int d0, d1;
+	__asm__ __volatile__(
+		       "       .align 2,0x90\n"
+		       "1:     "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "       cmpl $67, %0\n"
+		       "       jbe 3f\n"
+		       "2:     "__copyuser_seg" movl 64(%4), %%eax\n"
+		       "       .align 2,0x90\n"
+		       "3:     "__copyuser_seg" movl 0(%4), %%eax\n"
+		       "4:     "__copyuser_seg" movl 4(%4), %%edx\n"
+		       "5:     movl %%eax, 0(%3)\n"
+		       "6:     movl %%edx, 4(%3)\n"
+		       "7:     "__copyuser_seg" movl 8(%4), %%eax\n"
+		       "8:     "__copyuser_seg" movl 12(%4),%%edx\n"
+		       "9:     movl %%eax, 8(%3)\n"
+		       "10:    movl %%edx, 12(%3)\n"
+		       "11:    "__copyuser_seg" movl 16(%4), %%eax\n"
+		       "12:    "__copyuser_seg" movl 20(%4), %%edx\n"
+		       "13:    movl %%eax, 16(%3)\n"
+		       "14:    movl %%edx, 20(%3)\n"
+		       "15:    "__copyuser_seg" movl 24(%4), %%eax\n"
+		       "16:    "__copyuser_seg" movl 28(%4), %%edx\n"
+		       "17:    movl %%eax, 24(%3)\n"
+		       "18:    movl %%edx, 28(%3)\n"
+		       "19:    "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "20:    "__copyuser_seg" movl 36(%4), %%edx\n"
+		       "21:    movl %%eax, 32(%3)\n"
+		       "22:    movl %%edx, 36(%3)\n"
+		       "23:    "__copyuser_seg" movl 40(%4), %%eax\n"
+		       "24:    "__copyuser_seg" movl 44(%4), %%edx\n"
+		       "25:    movl %%eax, 40(%3)\n"
+		       "26:    movl %%edx, 44(%3)\n"
+		       "27:    "__copyuser_seg" movl 48(%4), %%eax\n"
+		       "28:    "__copyuser_seg" movl 52(%4), %%edx\n"
+		       "29:    movl %%eax, 48(%3)\n"
+		       "30:    movl %%edx, 52(%3)\n"
+		       "31:    "__copyuser_seg" movl 56(%4), %%eax\n"
+		       "32:    "__copyuser_seg" movl 60(%4), %%edx\n"
+		       "33:    movl %%eax, 56(%3)\n"
+		       "34:    movl %%edx, 60(%3)\n"
+		       "       addl $-64, %0\n"
+		       "       addl $64, %4\n"
+		       "       addl $64, %3\n"
+		       "       cmpl $63, %0\n"
+		       "       ja  1b\n"
+		       "35:    movl  %0, %%eax\n"
+		       "       shrl  $2, %0\n"
+		       "       andl  $3, %%eax\n"
+		       "       cld\n"
+		       "99:    rep; "__copyuser_seg" movsl\n"
+		       "36:    movl %%eax, %0\n"
+		       "37:    rep; "__copyuser_seg" movsb\n"
+		       "100:\n"
+		       ".section .fixup,\"ax\"\n"
+		       "101:   lea 0(%%eax,%0,4),%0\n"
+		       "       jmp 100b\n"
+		       ".previous\n"
+		       ".section __ex_table,\"a\"\n"
+		       "       .align 4\n"
+		       "       .long 1b,100b\n"
+		       "       .long 2b,100b\n"
+		       "       .long 3b,100b\n"
+		       "       .long 4b,100b\n"
+		       "       .long 5b,100b\n"
+		       "       .long 6b,100b\n"
+		       "       .long 7b,100b\n"
+		       "       .long 8b,100b\n"
+		       "       .long 9b,100b\n"
+		       "       .long 10b,100b\n"
+		       "       .long 11b,100b\n"
+		       "       .long 12b,100b\n"
+		       "       .long 13b,100b\n"
+		       "       .long 14b,100b\n"
+		       "       .long 15b,100b\n"
+		       "       .long 16b,100b\n"
+		       "       .long 17b,100b\n"
+		       "       .long 18b,100b\n"
+		       "       .long 19b,100b\n"
+		       "       .long 20b,100b\n"
+		       "       .long 21b,100b\n"
+		       "       .long 22b,100b\n"
+		       "       .long 23b,100b\n"
+		       "       .long 24b,100b\n"
+		       "       .long 25b,100b\n"
+		       "       .long 26b,100b\n"
+		       "       .long 27b,100b\n"
+		       "       .long 28b,100b\n"
+		       "       .long 29b,100b\n"
+		       "       .long 30b,100b\n"
+		       "       .long 31b,100b\n"
+		       "       .long 32b,100b\n"
+		       "       .long 33b,100b\n"
+		       "       .long 34b,100b\n"
+		       "       .long 35b,100b\n"
+		       "       .long 36b,100b\n"
+		       "       .long 37b,100b\n"
+		       "       .long 99b,101b\n"
+		       ".previous"
+		       : "=&c"(size), "=&D" (d0), "=&S" (d1)
+		       :  "1"(to), "2"(from), "0"(size)
+		       : "eax", "edx", "memory");
+	return size;
+}
+
+static unsigned long
+__copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) __size_overflow(3);
+static unsigned long
 __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
 {
 	int d0, d1;
 	__asm__ __volatile__(
 		       "        .align 2,0x90\n"
-		       "0:      movl 32(%4), %%eax\n"
+		       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 		       "        cmpl $67, %0\n"
 		       "        jbe 2f\n"
-		       "1:      movl 64(%4), %%eax\n"
+		       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 		       "        .align 2,0x90\n"
-		       "2:      movl 0(%4), %%eax\n"
-		       "21:     movl 4(%4), %%edx\n"
+		       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+		       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 		       "        movl %%eax, 0(%3)\n"
 		       "        movl %%edx, 4(%3)\n"
-		       "3:      movl 8(%4), %%eax\n"
-		       "31:     movl 12(%4),%%edx\n"
+		       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+		       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 		       "        movl %%eax, 8(%3)\n"
 		       "        movl %%edx, 12(%3)\n"
-		       "4:      movl 16(%4), %%eax\n"
-		       "41:     movl 20(%4), %%edx\n"
+		       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+		       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 		       "        movl %%eax, 16(%3)\n"
 		       "        movl %%edx, 20(%3)\n"
-		       "10:     movl 24(%4), %%eax\n"
-		       "51:     movl 28(%4), %%edx\n"
+		       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+		       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 		       "        movl %%eax, 24(%3)\n"
 		       "        movl %%edx, 28(%3)\n"
-		       "11:     movl 32(%4), %%eax\n"
-		       "61:     movl 36(%4), %%edx\n"
+		       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 		       "        movl %%eax, 32(%3)\n"
 		       "        movl %%edx, 36(%3)\n"
-		       "12:     movl 40(%4), %%eax\n"
-		       "71:     movl 44(%4), %%edx\n"
+		       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+		       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 		       "        movl %%eax, 40(%3)\n"
 		       "        movl %%edx, 44(%3)\n"
-		       "13:     movl 48(%4), %%eax\n"
-		       "81:     movl 52(%4), %%edx\n"
+		       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+		       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 		       "        movl %%eax, 48(%3)\n"
 		       "        movl %%edx, 52(%3)\n"
-		       "14:     movl 56(%4), %%eax\n"
-		       "91:     movl 60(%4), %%edx\n"
+		       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+		       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 		       "        movl %%eax, 56(%3)\n"
 		       "        movl %%edx, 60(%3)\n"
 		       "        addl $-64, %0\n"
@@ -385,9 +500,9 @@ __copy_user_zeroing_intel(void *to, cons
 		       "        shrl  $2, %0\n"
 		       "        andl $3, %%eax\n"
 		       "        cld\n"
-		       "6:      rep; movsl\n"
+		       "6:      rep; "__copyuser_seg" movsl\n"
 		       "        movl %%eax,%0\n"
-		       "7:      rep; movsb\n"
+		       "7:      rep; "__copyuser_seg" movsb\n"
 		       "8:\n"
 		       ".section .fixup,\"ax\"\n"
 		       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -434,47 +549,49 @@ __copy_user_zeroing_intel(void *to, cons
  */
 
 static unsigned long __copy_user_zeroing_intel_nocache(void *to,
+				const void __user *from, unsigned long size) __size_overflow(3);
+static unsigned long __copy_user_zeroing_intel_nocache(void *to,
 				const void __user *from, unsigned long size)
 {
 	int d0, d1;
 
 	__asm__ __volatile__(
 	       "        .align 2,0x90\n"
-	       "0:      movl 32(%4), %%eax\n"
+	       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 	       "        cmpl $67, %0\n"
 	       "        jbe 2f\n"
-	       "1:      movl 64(%4), %%eax\n"
+	       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 	       "        .align 2,0x90\n"
-	       "2:      movl 0(%4), %%eax\n"
-	       "21:     movl 4(%4), %%edx\n"
+	       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+	       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 	       "        movnti %%eax, 0(%3)\n"
 	       "        movnti %%edx, 4(%3)\n"
-	       "3:      movl 8(%4), %%eax\n"
-	       "31:     movl 12(%4),%%edx\n"
+	       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+	       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 	       "        movnti %%eax, 8(%3)\n"
 	       "        movnti %%edx, 12(%3)\n"
-	       "4:      movl 16(%4), %%eax\n"
-	       "41:     movl 20(%4), %%edx\n"
+	       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+	       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 	       "        movnti %%eax, 16(%3)\n"
 	       "        movnti %%edx, 20(%3)\n"
-	       "10:     movl 24(%4), %%eax\n"
-	       "51:     movl 28(%4), %%edx\n"
+	       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+	       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 	       "        movnti %%eax, 24(%3)\n"
 	       "        movnti %%edx, 28(%3)\n"
-	       "11:     movl 32(%4), %%eax\n"
-	       "61:     movl 36(%4), %%edx\n"
+	       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+	       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 	       "        movnti %%eax, 32(%3)\n"
 	       "        movnti %%edx, 36(%3)\n"
-	       "12:     movl 40(%4), %%eax\n"
-	       "71:     movl 44(%4), %%edx\n"
+	       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+	       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 	       "        movnti %%eax, 40(%3)\n"
 	       "        movnti %%edx, 44(%3)\n"
-	       "13:     movl 48(%4), %%eax\n"
-	       "81:     movl 52(%4), %%edx\n"
+	       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+	       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 	       "        movnti %%eax, 48(%3)\n"
 	       "        movnti %%edx, 52(%3)\n"
-	       "14:     movl 56(%4), %%eax\n"
-	       "91:     movl 60(%4), %%edx\n"
+	       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+	       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 	       "        movnti %%eax, 56(%3)\n"
 	       "        movnti %%edx, 60(%3)\n"
 	       "        addl $-64, %0\n"
@@ -487,9 +604,9 @@ static unsigned long __copy_user_zeroing
 	       "        shrl  $2, %0\n"
 	       "        andl $3, %%eax\n"
 	       "        cld\n"
-	       "6:      rep; movsl\n"
+	       "6:      rep; "__copyuser_seg" movsl\n"
 	       "        movl %%eax,%0\n"
-	       "7:      rep; movsb\n"
+	       "7:      rep; "__copyuser_seg" movsb\n"
 	       "8:\n"
 	       ".section .fixup,\"ax\"\n"
 	       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -531,47 +648,49 @@ static unsigned long __copy_user_zeroing
 }
 
 static unsigned long __copy_user_intel_nocache(void *to,
+				const void __user *from, unsigned long size) __size_overflow(3);
+static unsigned long __copy_user_intel_nocache(void *to,
 				const void __user *from, unsigned long size)
 {
 	int d0, d1;
 
 	__asm__ __volatile__(
 	       "        .align 2,0x90\n"
-	       "0:      movl 32(%4), %%eax\n"
+	       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 	       "        cmpl $67, %0\n"
 	       "        jbe 2f\n"
-	       "1:      movl 64(%4), %%eax\n"
+	       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 	       "        .align 2,0x90\n"
-	       "2:      movl 0(%4), %%eax\n"
-	       "21:     movl 4(%4), %%edx\n"
+	       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+	       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 	       "        movnti %%eax, 0(%3)\n"
 	       "        movnti %%edx, 4(%3)\n"
-	       "3:      movl 8(%4), %%eax\n"
-	       "31:     movl 12(%4),%%edx\n"
+	       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+	       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 	       "        movnti %%eax, 8(%3)\n"
 	       "        movnti %%edx, 12(%3)\n"
-	       "4:      movl 16(%4), %%eax\n"
-	       "41:     movl 20(%4), %%edx\n"
+	       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+	       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 	       "        movnti %%eax, 16(%3)\n"
 	       "        movnti %%edx, 20(%3)\n"
-	       "10:     movl 24(%4), %%eax\n"
-	       "51:     movl 28(%4), %%edx\n"
+	       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+	       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 	       "        movnti %%eax, 24(%3)\n"
 	       "        movnti %%edx, 28(%3)\n"
-	       "11:     movl 32(%4), %%eax\n"
-	       "61:     movl 36(%4), %%edx\n"
+	       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+	       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 	       "        movnti %%eax, 32(%3)\n"
 	       "        movnti %%edx, 36(%3)\n"
-	       "12:     movl 40(%4), %%eax\n"
-	       "71:     movl 44(%4), %%edx\n"
+	       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+	       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 	       "        movnti %%eax, 40(%3)\n"
 	       "        movnti %%edx, 44(%3)\n"
-	       "13:     movl 48(%4), %%eax\n"
-	       "81:     movl 52(%4), %%edx\n"
+	       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+	       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 	       "        movnti %%eax, 48(%3)\n"
 	       "        movnti %%edx, 52(%3)\n"
-	       "14:     movl 56(%4), %%eax\n"
-	       "91:     movl 60(%4), %%edx\n"
+	       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+	       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 	       "        movnti %%eax, 56(%3)\n"
 	       "        movnti %%edx, 60(%3)\n"
 	       "        addl $-64, %0\n"
@@ -584,9 +703,9 @@ static unsigned long __copy_user_intel_n
 	       "        shrl  $2, %0\n"
 	       "        andl $3, %%eax\n"
 	       "        cld\n"
-	       "6:      rep; movsl\n"
+	       "6:      rep; "__copyuser_seg" movsl\n"
 	       "        movl %%eax,%0\n"
-	       "7:      rep; movsb\n"
+	       "7:      rep; "__copyuser_seg" movsb\n"
 	       "8:\n"
 	       ".section .fixup,\"ax\"\n"
 	       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -629,32 +748,36 @@ static unsigned long __copy_user_intel_n
  */
 unsigned long __copy_user_zeroing_intel(void *to, const void __user *from,
 					unsigned long size);
-unsigned long __copy_user_intel(void __user *to, const void *from,
+unsigned long __generic_copy_to_user_intel(void __user *to, const void *from,
+					unsigned long size);
+unsigned long __generic_copy_from_user_intel(void *to, const void __user *from,
 					unsigned long size);
 unsigned long __copy_user_zeroing_intel_nocache(void *to,
 				const void __user *from, unsigned long size);
 #endif /* CONFIG_X86_INTEL_USERCOPY */
 
 /* Generic arbitrary sized copy.  */
-#define __copy_user(to, from, size)					\
+#define __copy_user(to, from, size, prefix, set, restore)		\
 do {									\
 	int __d0, __d1, __d2;						\
 	__asm__ __volatile__(						\
+		set							\
 		"	cmp  $7,%0\n"					\
 		"	jbe  1f\n"					\
 		"	movl %1,%0\n"					\
 		"	negl %0\n"					\
 		"	andl $7,%0\n"					\
 		"	subl %0,%3\n"					\
-		"4:	rep; movsb\n"					\
+		"4:	rep; "prefix"movsb\n"				\
 		"	movl %3,%0\n"					\
 		"	shrl $2,%0\n"					\
 		"	andl $3,%3\n"					\
 		"	.align 2,0x90\n"				\
-		"0:	rep; movsl\n"					\
+		"0:	rep; "prefix"movsl\n"				\
 		"	movl %3,%0\n"					\
-		"1:	rep; movsb\n"					\
+		"1:	rep; "prefix"movsb\n"				\
 		"2:\n"							\
+		restore							\
 		".section .fixup,\"ax\"\n"				\
 		"5:	addl %3,%0\n"					\
 		"	jmp 2b\n"					\
@@ -682,14 +805,14 @@ do {									\
 		"	negl %0\n"					\
 		"	andl $7,%0\n"					\
 		"	subl %0,%3\n"					\
-		"4:	rep; movsb\n"					\
+		"4:	rep; "__copyuser_seg"movsb\n"			\
 		"	movl %3,%0\n"					\
 		"	shrl $2,%0\n"					\
 		"	andl $3,%3\n"					\
 		"	.align 2,0x90\n"				\
-		"0:	rep; movsl\n"					\
+		"0:	rep; "__copyuser_seg"movsl\n"			\
 		"	movl %3,%0\n"					\
-		"1:	rep; movsb\n"					\
+		"1:	rep; "__copyuser_seg"movsb\n"			\
 		"2:\n"							\
 		".section .fixup,\"ax\"\n"				\
 		"5:	addl %3,%0\n"					\
@@ -775,9 +898,9 @@ survive:
 	}
 #endif
 	if (movsl_is_ok(to, from, n))
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES);
 	else
-		n = __copy_user_intel(to, from, n);
+		n = __generic_copy_to_user_intel(to, from, n);
 	return n;
 }
 EXPORT_SYMBOL(__copy_to_user_ll);
@@ -797,10 +920,9 @@ unsigned long __copy_from_user_ll_nozero
 					 unsigned long n)
 {
 	if (movsl_is_ok(to, from, n))
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, __copyuser_seg, "", "");
 	else
-		n = __copy_user_intel((void __user *)to,
-				      (const void *)from, n);
+		n = __generic_copy_from_user_intel(to, from, n);
 	return n;
 }
 EXPORT_SYMBOL(__copy_from_user_ll_nozero);
@@ -827,65 +949,50 @@ unsigned long __copy_from_user_ll_nocach
 	if (n > 64 && cpu_has_xmm2)
 		n = __copy_user_intel_nocache(to, from, n);
 	else
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, __copyuser_seg, "", "");
 #else
-	__copy_user(to, from, n);
+	__copy_user(to, from, n, __copyuser_seg, "", "");
 #endif
 	return n;
 }
 EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero);
 
-/**
- * copy_to_user: - Copy a block of data into user space.
- * @to:   Destination address, in user space.
- * @from: Source address, in kernel space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from kernel space to user space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- */
-unsigned long
-copy_to_user(void __user *to, const void *from, unsigned long n)
+void copy_from_user_overflow(void)
 {
-	if (access_ok(VERIFY_WRITE, to, n))
-		n = __copy_to_user(to, from, n);
-	return n;
+	WARN(1, "Buffer overflow detected!\n");
 }
-EXPORT_SYMBOL(copy_to_user);
+EXPORT_SYMBOL(copy_from_user_overflow);
 
-/**
- * copy_from_user: - Copy a block of data from user space.
- * @to:   Destination address, in kernel space.
- * @from: Source address, in user space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from user space to kernel space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- *
- * If some data could not be copied, this function will pad the copied
- * data to the requested size using zero bytes.
- */
-unsigned long
-_copy_from_user(void *to, const void __user *from, unsigned long n)
+void copy_to_user_overflow(void)
 {
-	if (access_ok(VERIFY_READ, from, n))
-		n = __copy_from_user(to, from, n);
-	else
-		memset(to, 0, n);
-	return n;
+	WARN(1, "Buffer overflow detected!\n");
 }
-EXPORT_SYMBOL(_copy_from_user);
+EXPORT_SYMBOL(copy_to_user_overflow);
 
-void copy_from_user_overflow(void)
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+void __set_fs(mm_segment_t x)
 {
-	WARN(1, "Buffer overflow detected!\n");
+	switch (x.seg) {
+	case 0:
+		loadsegment(gs, 0);
+		break;
+	case TASK_SIZE_MAX:
+		loadsegment(gs, __USER_DS);
+		break;
+	case -1UL:
+		loadsegment(gs, __KERNEL_DS);
+		break;
+	default:
+		BUG();
+	}
+	return;
 }
-EXPORT_SYMBOL(copy_from_user_overflow);
+EXPORT_SYMBOL(__set_fs);
+
+void set_fs(mm_segment_t x)
+{
+	current_thread_info()->addr_limit = x;
+	__set_fs(x);
+}
+EXPORT_SYMBOL(set_fs);
+#endif
diff -NurpP --minimal linux-3.2.22/arch/x86/lib/usercopy_64.c linux-3.2.22-g-v/arch/x86/lib/usercopy_64.c
--- linux-3.2.22/arch/x86/lib/usercopy_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/lib/usercopy_64.c	2012-07-11 20:20:37.120623209 +0200
@@ -42,6 +42,12 @@ long
 __strncpy_from_user(char *dst, const char __user *src, long count)
 {
 	long res;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if ((unsigned long)src < PAX_USER_SHADOW_BASE)
+		src += PAX_USER_SHADOW_BASE;
+#endif
+
 	__do_strncpy_from_user(dst, src, count, res);
 	return res;
 }
@@ -65,6 +71,12 @@ unsigned long __clear_user(void __user *
 {
 	long __d0;
 	might_fault();
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if ((unsigned long)addr < PAX_USER_SHADOW_BASE)
+		addr += PAX_USER_SHADOW_BASE;
+#endif
+
 	/* no memory constraint because it doesn't change any memory gcc knows
 	   about */
 	asm volatile(
@@ -149,12 +161,20 @@ long strlen_user(const char __user *s)
 }
 EXPORT_SYMBOL(strlen_user);
 
-unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len)
+unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len)
 {
-	if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { 
-		return copy_user_generic((__force void *)to, (__force void *)from, len);
-	} 
-	return len;		
+	if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) {
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if ((unsigned long)to < PAX_USER_SHADOW_BASE)
+			to += PAX_USER_SHADOW_BASE;
+		if ((unsigned long)from < PAX_USER_SHADOW_BASE)
+			from += PAX_USER_SHADOW_BASE;
+#endif
+
+		return copy_user_generic((void __force_kernel *)to, (void __force_kernel *)from, len);
+	}
+	return len;
 }
 EXPORT_SYMBOL(copy_in_user);
 
@@ -164,7 +184,7 @@ EXPORT_SYMBOL(copy_in_user);
  * it is not necessary to optimize tail handling.
  */
 unsigned long
-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest)
 {
 	char c;
 	unsigned zero_len;
@@ -181,3 +201,15 @@ copy_user_handle_tail(char *to, char *fr
 			break;
 	return len;
 }
+
+void copy_from_user_overflow(void)
+{
+	WARN(1, "Buffer overflow detected!\n");
+}
+EXPORT_SYMBOL(copy_from_user_overflow);
+
+void copy_to_user_overflow(void)
+{
+	WARN(1, "Buffer overflow detected!\n");
+}
+EXPORT_SYMBOL(copy_to_user_overflow);
diff -NurpP --minimal linux-3.2.22/arch/x86/Makefile linux-3.2.22-g-v/arch/x86/Makefile
--- linux-3.2.22/arch/x86/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/Makefile	2012-07-11 20:20:36.977450815 +0200
@@ -46,6 +46,7 @@ else
         UTS_MACHINE := x86_64
         CHECKFLAGS += -D__x86_64__ -m64
 
+        biarch := $(call cc-option,-m64)
         KBUILD_AFLAGS += -m64
         KBUILD_CFLAGS += -m64
 
@@ -199,3 +200,12 @@ define archhelp
   echo  '                  FDARGS="..."  arguments for the booted kernel'
   echo  '                  FDINITRD=file initrd for the booted kernel'
 endef
+
+define OLD_LD
+
+*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils.
+*** Please upgrade your binutils to 2.18 or newer
+endef
+
+archprepare:
+	$(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD)))
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/extable.c linux-3.2.22-g-v/arch/x86/mm/extable.c
--- linux-3.2.22/arch/x86/mm/extable.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/extable.c	2012-07-11 20:20:37.120623209 +0200
@@ -8,7 +8,7 @@ int fixup_exception(struct pt_regs *regs
 	const struct exception_table_entry *fixup;
 
 #ifdef CONFIG_PNPBIOS
-	if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) {
+	if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) {
 		extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp;
 		extern u32 pnp_bios_is_utter_crap;
 		pnp_bios_is_utter_crap = 1;
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/fault.c linux-3.2.22-g-v/arch/x86/mm/fault.c
--- linux-3.2.22/arch/x86/mm/fault.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/fault.c	2012-07-11 20:20:37.124117127 +0200
@@ -13,11 +13,18 @@
 #include <linux/perf_event.h>		/* perf_sw_event		*/
 #include <linux/hugetlb.h>		/* hstate_index_to_shift	*/
 #include <linux/prefetch.h>		/* prefetchw			*/
+#include <linux/unistd.h>
+#include <linux/compiler.h>
 
 #include <asm/traps.h>			/* dotraplinkage, ...		*/
 #include <asm/pgalloc.h>		/* pgd_*(), ...			*/
 #include <asm/kmemcheck.h>		/* kmemcheck_*(), ...		*/
 #include <asm/fixmap.h>			/* VSYSCALL_START		*/
+#include <asm/tlbflush.h>
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#include <asm/stacktrace.h>
+#endif
 
 /*
  * Page fault error code bits:
@@ -55,7 +62,7 @@ static inline int __kprobes notify_page_
 	int ret = 0;
 
 	/* kprobe_running() needs smp_processor_id() */
-	if (kprobes_built_in() && !user_mode_vm(regs)) {
+	if (kprobes_built_in() && !user_mode(regs)) {
 		preempt_disable();
 		if (kprobe_running() && kprobe_fault_handler(regs, 14))
 			ret = 1;
@@ -116,7 +123,10 @@ check_prefetch_opcode(struct pt_regs *re
 		return !instr_lo || (instr_lo>>1) == 1;
 	case 0x00:
 		/* Prefetch instruction is 0x0F0D or 0x0F18 */
-		if (probe_kernel_address(instr, opcode))
+		if (user_mode(regs)) {
+			if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
+				return 0;
+		} else if (probe_kernel_address(instr, opcode))
 			return 0;
 
 		*prefetch = (instr_lo == 0xF) &&
@@ -150,7 +160,10 @@ is_prefetch(struct pt_regs *regs, unsign
 	while (instr < max_instr) {
 		unsigned char opcode;
 
-		if (probe_kernel_address(instr, opcode))
+		if (user_mode(regs)) {
+			if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
+				break;
+		} else if (probe_kernel_address(instr, opcode))
 			break;
 
 		instr++;
@@ -181,6 +194,34 @@ force_sig_info_fault(int si_signo, int s
 	force_sig_info(si_signo, &info, tsk);
 }
 
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address);
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+static int pax_handle_fetch_fault(struct pt_regs *regs);
+#endif
+
+#ifdef CONFIG_PAX_PAGEEXEC
+static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address)
+{
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+
+	pgd = pgd_offset(mm, address);
+	if (!pgd_present(*pgd))
+		return NULL;
+	pud = pud_offset(pgd, address);
+	if (!pud_present(*pud))
+		return NULL;
+	pmd = pmd_offset(pud, address);
+	if (!pmd_present(*pmd))
+		return NULL;
+	return pmd;
+}
+#endif
+
 DEFINE_SPINLOCK(pgd_lock);
 LIST_HEAD(pgd_list);
 
@@ -231,10 +272,22 @@ void vmalloc_sync_all(void)
 	for (address = VMALLOC_START & PMD_MASK;
 	     address >= TASK_SIZE && address < FIXADDR_TOP;
 	     address += PMD_SIZE) {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
 		spin_lock(&pgd_lock);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = get_cpu_pgd(cpu);
+			pmd_t *ret;
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
+			pgd_t *pgd = page_address(page);
 			spinlock_t *pgt_lock;
 			pmd_t *ret;
 
@@ -242,8 +295,13 @@ void vmalloc_sync_all(void)
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 
 			spin_lock(pgt_lock);
-			ret = vmalloc_sync_one(page_address(page), address);
+#endif
+
+			ret = vmalloc_sync_one(pgd, address);
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			spin_unlock(pgt_lock);
+#endif
 
 			if (!ret)
 				break;
@@ -277,6 +335,11 @@ static noinline __kprobes int vmalloc_fa
 	 * an interrupt in the middle of a task switch..
 	 */
 	pgd_paddr = read_cr3();
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (pgd_paddr & PHYSICAL_PAGE_MASK));
+#endif
+
 	pmd_k = vmalloc_sync_one(__va(pgd_paddr), address);
 	if (!pmd_k)
 		return -1;
@@ -372,7 +435,14 @@ static noinline __kprobes int vmalloc_fa
 	 * happen within a race in page table update. In the later
 	 * case just flush:
 	 */
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (read_cr3() & PHYSICAL_PAGE_MASK));
+	pgd = pgd_offset_cpu(smp_processor_id(), address);
+#else
 	pgd = pgd_offset(current->active_mm, address);
+#endif
+
 	pgd_ref = pgd_offset_k(address);
 	if (pgd_none(*pgd_ref))
 		return -1;
@@ -540,7 +610,7 @@ static int is_errata93(struct pt_regs *r
 static int is_errata100(struct pt_regs *regs, unsigned long address)
 {
 #ifdef CONFIG_X86_64
-	if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32))
+	if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32))
 		return 1;
 #endif
 	return 0;
@@ -567,7 +637,7 @@ static int is_f00f_bug(struct pt_regs *r
 }
 
 static const char nx_warning[] = KERN_CRIT
-"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n";
+"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n";
 
 static void
 show_fault_oops(struct pt_regs *regs, unsigned long error_code,
@@ -576,15 +646,26 @@ show_fault_oops(struct pt_regs *regs, un
 	if (!oops_may_print())
 		return;
 
-	if (error_code & PF_INSTR) {
+	if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) {
 		unsigned int level;
 
 		pte_t *pte = lookup_address(address, &level);
 
 		if (pte && pte_present(*pte) && !pte_exec(*pte))
-			printk(nx_warning, current_uid());
+			printk(nx_warning, current_uid(), current->comm, task_pid_nr(current));
 	}
 
+#ifdef CONFIG_PAX_KERNEXEC
+	if (init_mm.start_code <= address && address < init_mm.end_code) {
+		if (current->signal->curr_ip)
+			printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n",
+					 &current->signal->curr_ip, current->comm, task_pid_nr(current), current_uid(), current_euid());
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n",
+					 current->comm, task_pid_nr(current), current_uid(), current_euid());
+	}
+#endif
+
 	printk(KERN_ALERT "BUG: unable to handle kernel ");
 	if (address < PAGE_SIZE)
 		printk(KERN_CONT "NULL pointer dereference");
@@ -739,6 +820,21 @@ __bad_area_nosemaphore(struct pt_regs *r
 		}
 #endif
 
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		if (pax_is_fetch_fault(regs, error_code, address)) {
+
+#ifdef CONFIG_PAX_EMUTRAMP
+			switch (pax_handle_fetch_fault(regs)) {
+			case 2:
+				return;
+			}
+#endif
+
+			pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		if (unlikely(show_unhandled_signals))
 			show_signal_msg(regs, error_code, address, tsk);
 
@@ -835,7 +931,7 @@ do_sigbus(struct pt_regs *regs, unsigned
 	if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
 		printk(KERN_ERR
 	"MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n",
-			tsk->comm, tsk->pid, address);
+			tsk->comm, task_pid_nr(tsk), address);
 		code = BUS_MCEERR_AR;
 	}
 #endif
@@ -890,6 +986,99 @@ static int spurious_fault_check(unsigned
 	return 1;
 }
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code)
+{
+	pte_t *pte;
+	pmd_t *pmd;
+	spinlock_t *ptl;
+	unsigned char pte_mask;
+
+	if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) ||
+	    !(mm->pax_flags & MF_PAX_PAGEEXEC))
+		return 0;
+
+	/* PaX: it's our fault, let's handle it if we can */
+
+	/* PaX: take a look at read faults before acquiring any locks */
+	if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) {
+		/* instruction fetch attempt from a protected page in user mode */
+		up_read(&mm->mmap_sem);
+
+#ifdef CONFIG_PAX_EMUTRAMP
+		switch (pax_handle_fetch_fault(regs)) {
+		case 2:
+			return 1;
+		}
+#endif
+
+		pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
+		do_group_exit(SIGKILL);
+	}
+
+	pmd = pax_get_pmd(mm, address);
+	if (unlikely(!pmd))
+		return 0;
+
+	pte = pte_offset_map_lock(mm, pmd, address, &ptl);
+	if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) {
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+	if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) {
+		/* write attempt to a protected page in user mode */
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+#ifdef CONFIG_SMP
+	if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask)))
+#else
+	if (likely(address > get_limit(regs->cs)))
+#endif
+	{
+		set_pte(pte, pte_mkread(*pte));
+		__flush_tlb_one(address);
+		pte_unmap_unlock(pte, ptl);
+		up_read(&mm->mmap_sem);
+		return 1;
+	}
+
+	pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1));
+
+	/*
+	 * PaX: fill DTLB with user rights and retry
+	 */
+	__asm__ __volatile__ (
+		"orb %2,(%1)\n"
+#if defined(CONFIG_M586) || defined(CONFIG_M586TSC)
+/*
+ * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's
+ * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any*
+ * page fault when examined during a TLB load attempt. this is true not only
+ * for PTEs holding a non-present entry but also present entries that will
+ * raise a page fault (such as those set up by PaX, or the copy-on-write
+ * mechanism). in effect it means that we do *not* need to flush the TLBs
+ * for our target pages since their PTEs are simply not in the TLBs at all.
+
+ * the best thing in omitting it is that we gain around 15-20% speed in the
+ * fast path of the page fault handler and can get rid of tracing since we
+ * can no longer flush unintended entries.
+ */
+		"invlpg (%0)\n"
+#endif
+		__copyuser_seg"testb $0,(%0)\n"
+		"xorb %3,(%1)\n"
+		:
+		: "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER)
+		: "memory", "cc");
+	pte_unmap_unlock(pte, ptl);
+	up_read(&mm->mmap_sem);
+	return 1;
+}
+#endif
+
 /*
  * Handle a spurious fault caused by a stale TLB entry.
  *
@@ -962,6 +1151,9 @@ int show_unhandled_signals = 1;
 static inline int
 access_error(unsigned long error_code, struct vm_area_struct *vma)
 {
+	if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC))
+		return 1;
+
 	if (error_code & PF_WRITE) {
 		/* write, present and write, not present: */
 		if (unlikely(!(vma->vm_flags & VM_WRITE)))
@@ -995,19 +1187,33 @@ do_page_fault(struct pt_regs *regs, unsi
 {
 	struct vm_area_struct *vma;
 	struct task_struct *tsk;
-	unsigned long address;
 	struct mm_struct *mm;
 	int fault;
 	int write = error_code & PF_WRITE;
 	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
 					(write ? FAULT_FLAG_WRITE : 0);
 
+	/* Get the faulting address: */
+	unsigned long address = read_cr2();
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if (!user_mode(regs) && address < 2 * PAX_USER_SHADOW_BASE) {
+		if (!search_exception_tables(regs->ip)) {
+			bad_area_nosemaphore(regs, error_code, address);
+			return;
+		}
+		if (address < PAX_USER_SHADOW_BASE) {
+			printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n");
+			printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip);
+			show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR);
+		} else
+			address -= PAX_USER_SHADOW_BASE;
+	}
+#endif
+
 	tsk = current;
 	mm = tsk->mm;
 
-	/* Get the faulting address: */
-	address = read_cr2();
-
 	/*
 	 * Detect and handle instructions that would cause a page fault for
 	 * both a tracked kernel page and a userspace page.
@@ -1067,7 +1273,7 @@ do_page_fault(struct pt_regs *regs, unsi
 	 * User-mode registers count as a user access even for any
 	 * potential system fault or CPU buglet:
 	 */
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		local_irq_enable();
 		error_code |= PF_USER;
 	} else {
@@ -1122,6 +1328,11 @@ retry:
 		might_sleep();
 	}
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+	if (pax_handle_pageexec_fault(regs, mm, address, error_code))
+		return;
+#endif
+
 	vma = find_vma(mm, address);
 	if (unlikely(!vma)) {
 		bad_area(regs, error_code, address);
@@ -1133,18 +1344,24 @@ retry:
 		bad_area(regs, error_code, address);
 		return;
 	}
-	if (error_code & PF_USER) {
-		/*
-		 * Accessing the stack below %sp is always a bug.
-		 * The large cushion allows instructions like enter
-		 * and pusha to work. ("enter $65535, $31" pushes
-		 * 32 pointers and then decrements %sp by 65535.)
-		 */
-		if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) {
-			bad_area(regs, error_code, address);
-			return;
-		}
+	/*
+	 * Accessing the stack below %sp is always a bug.
+	 * The large cushion allows instructions like enter
+	 * and pusha to work. ("enter $65535, $31" pushes
+	 * 32 pointers and then decrements %sp by 65535.)
+	 */
+	if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) {
+		bad_area(regs, error_code, address);
+		return;
+	}
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) {
+		bad_area(regs, error_code, address);
+		return;
 	}
+#endif
+
 	if (unlikely(expand_stack(vma, address))) {
 		bad_area(regs, error_code, address);
 		return;
@@ -1199,3 +1416,292 @@ good_area:
 
 	up_read(&mm->mmap_sem);
 }
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address)
+{
+	struct mm_struct *mm = current->mm;
+	unsigned long ip = regs->ip;
+
+	if (v8086_mode(regs))
+		ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff);
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+		if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR))
+			return true;
+		if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address)
+			return true;
+		return false;
+	}
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC) {
+		if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address))
+			return true;
+		return false;
+	}
+#endif
+
+	return false;
+}
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+static int pax_handle_fetch_fault_32(struct pt_regs *regs)
+{
+	int err;
+
+	do { /* PaX: libffi trampoline emulation */
+		unsigned char mov, jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 9) >> 32)
+			break;
+#endif
+
+		err = get_user(mov, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+
+		if (err)
+			break;
+
+		if (mov == 0xB8 && jmp == 0xE9) {
+			regs->ax = addr1;
+			regs->ip = (unsigned int)(regs->ip + addr2 + 10);
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #1 */
+		unsigned char mov1, mov2;
+		unsigned short jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 11) >> 32)
+			break;
+#endif
+
+		err = get_user(mov1, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+		err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) {
+			regs->cx = addr1;
+			regs->ax = addr2;
+			regs->ip = addr2;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #2 */
+		unsigned char mov, jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 9) >> 32)
+			break;
+#endif
+
+		err = get_user(mov, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+
+		if (err)
+			break;
+
+		if (mov == 0xB9 && jmp == 0xE9) {
+			regs->cx = addr1;
+			regs->ip = (unsigned int)(regs->ip + addr2 + 10);
+			return 2;
+		}
+	} while (0);
+
+	return 1; /* PaX in action */
+}
+
+#ifdef CONFIG_X86_64
+static int pax_handle_fetch_fault_64(struct pt_regs *regs)
+{
+	int err;
+
+	do { /* PaX: libffi trampoline emulation */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char stcclc, jmp2;
+		unsigned long addr1, addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
+		err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			if (stcclc == 0xF8)
+				regs->flags &= ~X86_EFLAGS_CF;
+			else
+				regs->flags |= X86_EFLAGS_CF;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #1 */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char jmp2;
+		unsigned int addr1;
+		unsigned long addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #2 */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char jmp2;
+		unsigned long addr1, addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	return 1; /* PaX in action */
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->ip = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when gcc trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+	if (v8086_mode(regs))
+		return 1;
+
+	if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
+		return 1;
+
+#ifdef CONFIG_X86_32
+	return pax_handle_fetch_fault_32(regs);
+#else
+	if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))
+		return pax_handle_fetch_fault_32(regs);
+	else
+		return pax_handle_fetch_fault_64(regs);
+#endif
+}
+#endif
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (unsigned char __force_user *)pc+i))
+			printk(KERN_CONT "?? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+
+	printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long));
+	for (i = -1; i < 80 / (long)sizeof(long); i++) {
+		unsigned long c;
+		if (get_user(c, (unsigned long __force_user *)sp+i)) {
+#ifdef CONFIG_X86_32
+			printk(KERN_CONT "???????? ");
+#else
+			if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)))
+				printk(KERN_CONT "???????? ???????? ");
+			else
+				printk(KERN_CONT "???????????????? ");
+#endif
+		} else {
+#ifdef CONFIG_X86_64
+			if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) {
+				printk(KERN_CONT "%08x ", (unsigned int)c);
+				printk(KERN_CONT "%08x ", (unsigned int)(c >> 32));
+			} else
+#endif
+				printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c);
+		}
+	}
+	printk("\n");
+}
+#endif
+
+/**
+ * probe_kernel_write(): safely attempt to write to a location
+ * @dst: address to write to
+ * @src: pointer to the data that shall be written
+ * @size: size of the data chunk
+ *
+ * Safely write to address @dst from the buffer at @src.  If a kernel fault
+ * happens, handle that and return -EFAULT.
+ */
+long notrace probe_kernel_write(void *dst, const void *src, size_t size)
+{
+	long ret;
+	mm_segment_t old_fs = get_fs();
+
+	set_fs(KERNEL_DS);
+	pagefault_disable();
+	pax_open_kernel();
+	ret = __copy_to_user_inatomic((void __force_user *)dst, src, size);
+	pax_close_kernel();
+	pagefault_enable();
+	set_fs(old_fs);
+
+	return ret ? -EFAULT : 0;
+}
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/gup.c linux-3.2.22-g-v/arch/x86/mm/gup.c
--- linux-3.2.22/arch/x86/mm/gup.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/gup.c	2012-07-11 20:20:37.124117127 +0200
@@ -255,7 +255,7 @@ int __get_user_pages_fast(unsigned long 
 	addr = start;
 	len = (unsigned long) nr_pages << PAGE_SHIFT;
 	end = start + len;
-	if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
+	if (unlikely(!__access_ok(write ? VERIFY_WRITE : VERIFY_READ,
 					(void __user *)start, len)))
 		return 0;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/highmem_32.c linux-3.2.22-g-v/arch/x86/mm/highmem_32.c
--- linux-3.2.22/arch/x86/mm/highmem_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/highmem_32.c	2012-07-11 20:20:37.124117127 +0200
@@ -44,7 +44,11 @@ void *kmap_atomic_prot(struct page *page
 	idx = type + KM_TYPE_NR*smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
 	BUG_ON(!pte_none(*(kmap_pte-idx)));
+
+	pax_open_kernel();
 	set_pte(kmap_pte-idx, mk_pte(page, prot));
+	pax_close_kernel();
+
 	arch_flush_lazy_mmu_mode();
 
 	return (void *)vaddr;
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/hugetlbpage.c linux-3.2.22-g-v/arch/x86/mm/hugetlbpage.c
--- linux-3.2.22/arch/x86/mm/hugetlbpage.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/hugetlbpage.c	2012-07-11 20:20:37.124117127 +0200
@@ -266,13 +266,20 @@ static unsigned long hugetlb_get_unmappe
 	struct hstate *h = hstate_file(file);
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
-	unsigned long start_addr;
+	unsigned long start_addr, pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
 
 	if (len > mm->cached_hole_size) {
-	        start_addr = mm->free_area_cache;
+		start_addr = mm->free_area_cache;
 	} else {
-	        start_addr = TASK_UNMAPPED_BASE;
-	        mm->cached_hole_size = 0;
+		start_addr = mm->mmap_base;
+		mm->cached_hole_size = 0;
 	}
 
 full_search:
@@ -280,26 +287,27 @@ full_search:
 
 	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
 		/* At this point:  (!vma || addr < vma->vm_end). */
-		if (TASK_SIZE - len < addr) {
+		if (pax_task_size - len < addr) {
 			/*
 			 * Start a new search - just in case we missed
 			 * some holes.
 			 */
-			if (start_addr != TASK_UNMAPPED_BASE) {
-				start_addr = TASK_UNMAPPED_BASE;
+			if (start_addr != mm->mmap_base) {
+				start_addr = mm->mmap_base;
 				mm->cached_hole_size = 0;
 				goto full_search;
 			}
 			return -ENOMEM;
 		}
-		if (!vma || addr + len <= vma->vm_start) {
-			mm->free_area_cache = addr + len;
-			return addr;
-		}
+		if (check_heap_stack_gap(vma, addr, len))
+			break;
 		if (addr + mm->cached_hole_size < vma->vm_start)
 		        mm->cached_hole_size = vma->vm_start - addr;
 		addr = ALIGN(vma->vm_end, huge_page_size(h));
 	}
+
+	mm->free_area_cache = addr + len;
+	return addr;
 }
 
 static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
@@ -308,10 +316,9 @@ static unsigned long hugetlb_get_unmappe
 {
 	struct hstate *h = hstate_file(file);
 	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma, *prev_vma;
-	unsigned long base = mm->mmap_base, addr = addr0;
+	struct vm_area_struct *vma;
+	unsigned long base = mm->mmap_base, addr;
 	unsigned long largest_hole = mm->cached_hole_size;
-	int first_time = 1;
 
 	/* don't allow allocations above current base */
 	if (mm->free_area_cache > base)
@@ -321,64 +328,68 @@ static unsigned long hugetlb_get_unmappe
 	        largest_hole = 0;
 		mm->free_area_cache  = base;
 	}
-try_again:
+
 	/* make sure it can fit in the remaining address space */
 	if (mm->free_area_cache < len)
 		goto fail;
 
 	/* either no address requested or can't fit in requested address hole */
-	addr = (mm->free_area_cache - len) & huge_page_mask(h);
+	addr = (mm->free_area_cache - len);
 	do {
+		addr &= huge_page_mask(h);
 		/*
 		 * Lookup failure means no vma is above this address,
 		 * i.e. return with success:
 		 */
-		if (!(vma = find_vma_prev(mm, addr, &prev_vma)))
+		vma = find_vma(mm, addr);
+		if (!vma)
 			return addr;
 
 		/*
 		 * new region fits between prev_vma->vm_end and
 		 * vma->vm_start, use it:
 		 */
-		if (addr + len <= vma->vm_start &&
-		            (!prev_vma || (addr >= prev_vma->vm_end))) {
+		if (check_heap_stack_gap(vma, addr, len)) {
 			/* remember the address as a hint for next time */
-		        mm->cached_hole_size = largest_hole;
-		        return (mm->free_area_cache = addr);
-		} else {
-			/* pull free_area_cache down to the first hole */
-		        if (mm->free_area_cache == vma->vm_end) {
-				mm->free_area_cache = vma->vm_start;
-				mm->cached_hole_size = largest_hole;
-			}
+			mm->cached_hole_size = largest_hole;
+			return (mm->free_area_cache = addr);
+		}
+		/* pull free_area_cache down to the first hole */
+		if (mm->free_area_cache == vma->vm_end) {
+			mm->free_area_cache = vma->vm_start;
+			mm->cached_hole_size = largest_hole;
 		}
 
 		/* remember the largest hole we saw so far */
 		if (addr + largest_hole < vma->vm_start)
-		        largest_hole = vma->vm_start - addr;
+			largest_hole = vma->vm_start - addr;
 
 		/* try just below the current vma->vm_start */
-		addr = (vma->vm_start - len) & huge_page_mask(h);
-	} while (len <= vma->vm_start);
+		addr = skip_heap_stack_gap(vma, len);
+	} while (!IS_ERR_VALUE(addr));
 
 fail:
 	/*
-	 * if hint left us with no space for the requested
-	 * mapping then try again:
-	 */
-	if (first_time) {
-		mm->free_area_cache = base;
-		largest_hole = 0;
-		first_time = 0;
-		goto try_again;
-	}
-	/*
 	 * A failed mmap() very likely causes application failure,
 	 * so fall back to the bottom-up function here. This scenario
 	 * can happen with large stack limits and large mmap()
 	 * allocations.
 	 */
-	mm->free_area_cache = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE;
+	else
+#endif
+
+	mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		mm->mmap_base += mm->delta_mmap;
+#endif
+
+	mm->free_area_cache = mm->mmap_base;
 	mm->cached_hole_size = ~0UL;
 	addr = hugetlb_get_unmapped_area_bottomup(file, addr0,
 			len, pgoff, flags);
@@ -386,6 +397,7 @@ fail:
 	/*
 	 * Restore the topdown base:
 	 */
+	mm->mmap_base = base;
 	mm->free_area_cache = base;
 	mm->cached_hole_size = ~0UL;
 
@@ -399,10 +411,19 @@ hugetlb_get_unmapped_area(struct file *f
 	struct hstate *h = hstate_file(file);
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
+	unsigned long pax_task_size = TASK_SIZE;
 
 	if (len & ~huge_page_mask(h))
 		return -EINVAL;
-	if (len > TASK_SIZE)
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (len > pax_task_size)
 		return -ENOMEM;
 
 	if (flags & MAP_FIXED) {
@@ -414,8 +435,7 @@ hugetlb_get_unmapped_area(struct file *f
 	if (addr) {
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/init_32.c linux-3.2.22-g-v/arch/x86/mm/init_32.c
--- linux-3.2.22/arch/x86/mm/init_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/init_32.c	2012-07-11 20:20:37.127338527 +0200
@@ -74,36 +74,6 @@ static __init void *alloc_low_page(void)
 }
 
 /*
- * Creates a middle page table and puts a pointer to it in the
- * given global directory entry. This only returns the gd entry
- * in non-PAE compilation mode, since the middle layer is folded.
- */
-static pmd_t * __init one_md_table_init(pgd_t *pgd)
-{
-	pud_t *pud;
-	pmd_t *pmd_table;
-
-#ifdef CONFIG_X86_PAE
-	if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
-		if (after_bootmem)
-			pmd_table = (pmd_t *)alloc_bootmem_pages(PAGE_SIZE);
-		else
-			pmd_table = (pmd_t *)alloc_low_page();
-		paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
-		set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
-		pud = pud_offset(pgd, 0);
-		BUG_ON(pmd_table != pmd_offset(pud, 0));
-
-		return pmd_table;
-	}
-#endif
-	pud = pud_offset(pgd, 0);
-	pmd_table = pmd_offset(pud, 0);
-
-	return pmd_table;
-}
-
-/*
  * Create a page table and place a pointer to it in a middle page
  * directory entry:
  */
@@ -123,13 +93,28 @@ static pte_t * __init one_page_table_ini
 			page_table = (pte_t *)alloc_low_page();
 
 		paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT);
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE));
+#else
 		set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
+#endif
 		BUG_ON(page_table != pte_offset_kernel(pmd, 0));
 	}
 
 	return pte_offset_kernel(pmd, 0);
 }
 
+static pmd_t * __init one_md_table_init(pgd_t *pgd)
+{
+	pud_t *pud;
+	pmd_t *pmd_table;
+
+	pud = pud_offset(pgd, 0);
+	pmd_table = pmd_offset(pud, 0);
+
+	return pmd_table;
+}
+
 pmd_t * __init populate_extra_pmd(unsigned long vaddr)
 {
 	int pgd_idx = pgd_index(vaddr);
@@ -203,6 +188,7 @@ page_table_range_init(unsigned long star
 	int pgd_idx, pmd_idx;
 	unsigned long vaddr;
 	pgd_t *pgd;
+	pud_t *pud;
 	pmd_t *pmd;
 	pte_t *pte = NULL;
 
@@ -212,8 +198,13 @@ page_table_range_init(unsigned long star
 	pgd = pgd_base + pgd_idx;
 
 	for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
-		pmd = one_md_table_init(pgd);
-		pmd = pmd + pmd_index(vaddr);
+		pud = pud_offset(pgd, vaddr);
+		pmd = pmd_offset(pud, vaddr);
+
+#ifdef CONFIG_X86_PAE
+		paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
+#endif
+
 		for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);
 							pmd++, pmd_idx++) {
 			pte = page_table_kmap_check(one_page_table_init(pmd),
@@ -225,11 +216,20 @@ page_table_range_init(unsigned long star
 	}
 }
 
-static inline int is_kernel_text(unsigned long addr)
+static inline int is_kernel_text(unsigned long start, unsigned long end)
 {
-	if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end)
-		return 1;
-	return 0;
+	if ((start > ktla_ktva((unsigned long)_etext) ||
+	     end <= ktla_ktva((unsigned long)_stext)) &&
+	    (start > ktla_ktva((unsigned long)_einittext) ||
+	     end <= ktla_ktva((unsigned long)_sinittext)) &&
+
+#ifdef CONFIG_ACPI_SLEEP
+	    (start > (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) &&
+#endif
+
+	    (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000)))
+		return 0;
+	return 1;
 }
 
 /*
@@ -246,9 +246,10 @@ kernel_physical_mapping_init(unsigned lo
 	unsigned long last_map_addr = end;
 	unsigned long start_pfn, end_pfn;
 	pgd_t *pgd_base = swapper_pg_dir;
-	int pgd_idx, pmd_idx, pte_ofs;
+	unsigned int pgd_idx, pmd_idx, pte_ofs;
 	unsigned long pfn;
 	pgd_t *pgd;
+	pud_t *pud;
 	pmd_t *pmd;
 	pte_t *pte;
 	unsigned pages_2m, pages_4k;
@@ -281,8 +282,13 @@ repeat:
 	pfn = start_pfn;
 	pgd_idx = pgd_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
 	pgd = pgd_base + pgd_idx;
-	for (; pgd_idx < PTRS_PER_PGD; pgd++, pgd_idx++) {
-		pmd = one_md_table_init(pgd);
+	for (; pgd_idx < PTRS_PER_PGD && pfn < max_low_pfn; pgd++, pgd_idx++) {
+		pud = pud_offset(pgd, 0);
+		pmd = pmd_offset(pud, 0);
+
+#ifdef CONFIG_X86_PAE
+		paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
+#endif
 
 		if (pfn >= end_pfn)
 			continue;
@@ -294,14 +300,13 @@ repeat:
 #endif
 		for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn;
 		     pmd++, pmd_idx++) {
-			unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET;
+			unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET;
 
 			/*
 			 * Map with big pages if possible, otherwise
 			 * create normal page tables:
 			 */
 			if (use_pse) {
-				unsigned int addr2;
 				pgprot_t prot = PAGE_KERNEL_LARGE;
 				/*
 				 * first pass will use the same initial
@@ -311,11 +316,7 @@ repeat:
 					__pgprot(PTE_IDENT_ATTR |
 						 _PAGE_PSE);
 
-				addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE +
-					PAGE_OFFSET + PAGE_SIZE-1;
-
-				if (is_kernel_text(addr) ||
-				    is_kernel_text(addr2))
+				if (is_kernel_text(address, address + PMD_SIZE))
 					prot = PAGE_KERNEL_LARGE_EXEC;
 
 				pages_2m++;
@@ -332,7 +333,7 @@ repeat:
 			pte_ofs = pte_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
 			pte += pte_ofs;
 			for (; pte_ofs < PTRS_PER_PTE && pfn < end_pfn;
-			     pte++, pfn++, pte_ofs++, addr += PAGE_SIZE) {
+			     pte++, pfn++, pte_ofs++, address += PAGE_SIZE) {
 				pgprot_t prot = PAGE_KERNEL;
 				/*
 				 * first pass will use the same initial
@@ -340,7 +341,7 @@ repeat:
 				 */
 				pgprot_t init_prot = __pgprot(PTE_IDENT_ATTR);
 
-				if (is_kernel_text(addr))
+				if (is_kernel_text(address, address + PAGE_SIZE))
 					prot = PAGE_KERNEL_EXEC;
 
 				pages_4k++;
@@ -472,7 +473,7 @@ void __init native_pagetable_setup_start
 
 		pud = pud_offset(pgd, va);
 		pmd = pmd_offset(pud, va);
-		if (!pmd_present(*pmd))
+		if (!pmd_present(*pmd) || pmd_huge(*pmd))
 			break;
 
 		pte = pte_offset_kernel(pmd, va);
@@ -524,12 +525,10 @@ void __init early_ioremap_page_table_ran
 
 static void __init pagetable_init(void)
 {
-	pgd_t *pgd_base = swapper_pg_dir;
-
-	permanent_kmaps_init(pgd_base);
+	permanent_kmaps_init(swapper_pg_dir);
 }
 
-pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 /* user-defined highmem size */
@@ -757,6 +756,12 @@ void __init mem_init(void)
 
 	pci_iommu_alloc();
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+#endif
+
 #ifdef CONFIG_FLATMEM
 	BUG_ON(!mem_map);
 #endif
@@ -774,7 +779,7 @@ void __init mem_init(void)
 	set_highmem_pages_init();
 
 	codesize =  (unsigned long) &_etext - (unsigned long) &_text;
-	datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
+	datasize =  (unsigned long) &_edata - (unsigned long) &_sdata;
 	initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
 
 	printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
@@ -815,10 +820,10 @@ void __init mem_init(void)
 		((unsigned long)&__init_end -
 		 (unsigned long)&__init_begin) >> 10,
 
-		(unsigned long)&_etext, (unsigned long)&_edata,
-		((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
+		(unsigned long)&_sdata, (unsigned long)&_edata,
+		((unsigned long)&_edata - (unsigned long)&_sdata) >> 10,
 
-		(unsigned long)&_text, (unsigned long)&_etext,
+		ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext),
 		((unsigned long)&_etext - (unsigned long)&_text) >> 10);
 
 	/*
@@ -896,6 +901,7 @@ void set_kernel_text_rw(void)
 	if (!kernel_set_to_readonly)
 		return;
 
+	start = ktla_ktva(start);
 	pr_debug("Set kernel text: %lx - %lx for read write\n",
 		 start, start+size);
 
@@ -910,6 +916,7 @@ void set_kernel_text_ro(void)
 	if (!kernel_set_to_readonly)
 		return;
 
+	start = ktla_ktva(start);
 	pr_debug("Set kernel text: %lx - %lx for read only\n",
 		 start, start+size);
 
@@ -938,6 +945,7 @@ void mark_rodata_ro(void)
 	unsigned long start = PFN_ALIGN(_text);
 	unsigned long size = PFN_ALIGN(_etext) - start;
 
+	start = ktla_ktva(start);
 	set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
 	printk(KERN_INFO "Write protecting the kernel text: %luk\n",
 		size >> 10);
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/init_64.c linux-3.2.22-g-v/arch/x86/mm/init_64.c
--- linux-3.2.22/arch/x86/mm/init_64.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/init_64.c	2012-07-11 20:20:37.127338527 +0200
@@ -75,7 +75,7 @@ early_param("gbpages", parse_direct_gbpa
  * around without checking the pgd every time.
  */
 
-pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP;
+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 int force_personality32;
@@ -108,12 +108,22 @@ void sync_global_pgds(unsigned long star
 
 	for (address = start; address <= end; address += PGDIR_SIZE) {
 		const pgd_t *pgd_ref = pgd_offset_k(address);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
 		if (pgd_none(*pgd_ref))
 			continue;
 
 		spin_lock(&pgd_lock);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = pgd_offset_cpu(cpu, address);
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
 			pgd_t *pgd;
 			spinlock_t *pgt_lock;
@@ -122,6 +132,7 @@ void sync_global_pgds(unsigned long star
 			/* the pgt_lock only for Xen */
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 			spin_lock(pgt_lock);
+#endif
 
 			if (pgd_none(*pgd))
 				set_pgd(pgd, *pgd_ref);
@@ -129,7 +140,10 @@ void sync_global_pgds(unsigned long star
 				BUG_ON(pgd_page_vaddr(*pgd)
 				       != pgd_page_vaddr(*pgd_ref));
 
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			spin_unlock(pgt_lock);
+#endif
+
 		}
 		spin_unlock(&pgd_lock);
 	}
@@ -162,7 +176,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsig
 {
 	if (pgd_none(*pgd)) {
 		pud_t *pud = (pud_t *)spp_getpage();
-		pgd_populate(&init_mm, pgd, pud);
+		pgd_populate_kernel(&init_mm, pgd, pud);
 		if (pud != pud_offset(pgd, 0))
 			printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n",
 			       pud, pud_offset(pgd, 0));
@@ -174,7 +188,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsig
 {
 	if (pud_none(*pud)) {
 		pmd_t *pmd = (pmd_t *) spp_getpage();
-		pud_populate(&init_mm, pud, pmd);
+		pud_populate_kernel(&init_mm, pud, pmd);
 		if (pmd != pmd_offset(pud, 0))
 			printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n",
 			       pmd, pmd_offset(pud, 0));
@@ -203,7 +217,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, 
 	pmd = fill_pmd(pud, vaddr);
 	pte = fill_pte(pmd, vaddr);
 
+	pax_open_kernel();
 	set_pte(pte, new_pte);
+	pax_close_kernel();
 
 	/*
 	 * It's enough to flush this one mapping.
@@ -262,14 +278,12 @@ static void __init __init_extra_mapping(
 		pgd = pgd_offset_k((unsigned long)__va(phys));
 		if (pgd_none(*pgd)) {
 			pud = (pud_t *) spp_getpage();
-			set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE |
-						_PAGE_USER));
+			set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE));
 		}
 		pud = pud_offset(pgd, (unsigned long)__va(phys));
 		if (pud_none(*pud)) {
 			pmd = (pmd_t *) spp_getpage();
-			set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE |
-						_PAGE_USER));
+			set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE));
 		}
 		pmd = pmd_offset(pud, phys);
 		BUG_ON(!pmd_none(*pmd));
@@ -330,7 +344,7 @@ static __ref void *alloc_low_page(unsign
 	if (pfn >= pgt_buf_top)
 		panic("alloc_low_page: ran out of memory");
 
-	adr = early_memremap(pfn * PAGE_SIZE, PAGE_SIZE);
+	adr = (void __force_kernel *)early_memremap(pfn * PAGE_SIZE, PAGE_SIZE);
 	clear_page(adr);
 	*phys  = pfn * PAGE_SIZE;
 	return adr;
@@ -346,7 +360,7 @@ static __ref void *map_low_page(void *vi
 
 	phys = __pa(virt);
 	left = phys & (PAGE_SIZE - 1);
-	adr = early_memremap(phys & PAGE_MASK, PAGE_SIZE);
+	adr = (void __force_kernel *)early_memremap(phys & PAGE_MASK, PAGE_SIZE);
 	adr = (void *)(((unsigned long)adr) | left);
 
 	return adr;
@@ -546,7 +560,7 @@ phys_pud_init(pud_t *pud_page, unsigned 
 		unmap_low_page(pmd);
 
 		spin_lock(&init_mm.page_table_lock);
-		pud_populate(&init_mm, pud, __va(pmd_phys));
+		pud_populate_kernel(&init_mm, pud, __va(pmd_phys));
 		spin_unlock(&init_mm.page_table_lock);
 	}
 	__flush_tlb_all();
@@ -592,7 +606,7 @@ kernel_physical_mapping_init(unsigned lo
 		unmap_low_page(pud);
 
 		spin_lock(&init_mm.page_table_lock);
-		pgd_populate(&init_mm, pgd, __va(pud_phys));
+		pgd_populate_kernel(&init_mm, pgd, __va(pud_phys));
 		spin_unlock(&init_mm.page_table_lock);
 		pgd_changed = true;
 	}
@@ -693,6 +707,12 @@ void __init mem_init(void)
 
 	pci_iommu_alloc();
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+#endif
+
 	/* clear_bss() already clear the empty_zero_page */
 
 	reservedpages = 0;
@@ -853,8 +873,8 @@ int kern_addr_valid(unsigned long addr)
 static struct vm_area_struct gate_vma = {
 	.vm_start	= VSYSCALL_START,
 	.vm_end		= VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE),
-	.vm_page_prot	= PAGE_READONLY_EXEC,
-	.vm_flags	= VM_READ | VM_EXEC
+	.vm_page_prot	= PAGE_READONLY,
+	.vm_flags	= VM_READ
 };
 
 struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
@@ -888,7 +908,7 @@ int in_gate_area_no_mm(unsigned long add
 
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
-	if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
+	if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso)
 		return "[vdso]";
 	if (vma == &gate_vma)
 		return "[vsyscall]";
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/init.c linux-3.2.22-g-v/arch/x86/mm/init.c
--- linux-3.2.22/arch/x86/mm/init.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/init.c	2012-07-11 20:20:37.124117127 +0200
@@ -15,6 +15,8 @@
 #include <asm/tlbflush.h>
 #include <asm/tlb.h>
 #include <asm/proto.h>
+#include <asm/desc.h>
+#include <asm/bios_ebda.h>
 
 unsigned long __initdata pgt_buf_start;
 unsigned long __meminitdata pgt_buf_end;
@@ -31,7 +33,7 @@ int direct_gbpages
 static void __init find_early_table_space(unsigned long end, int use_pse,
 					  int use_gbpages)
 {
-	unsigned long puds, pmds, ptes, tables, start = 0, good_end = end;
+	unsigned long puds, pmds, ptes, tables, start = 0x100000, good_end = end;
 	phys_addr_t base;
 
 	puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
@@ -310,10 +312,37 @@ unsigned long __init_refok init_memory_m
  * Access has to be given to non-kernel-ram areas as well, these contain the PCI
  * mmio resources as well as potential bios/acpi data regions.
  */
+
+#ifdef CONFIG_GRKERNSEC_KMEM
+static unsigned int ebda_start __read_only;
+static unsigned int ebda_end __read_only;
+#endif
+
 int devmem_is_allowed(unsigned long pagenr)
 {
-	if (pagenr <= 256)
+#ifdef CONFIG_GRKERNSEC_KMEM
+	/* allow BDA */
+	if (!pagenr)
+		return 1;
+	/* allow EBDA */
+	if (pagenr >= ebda_start && pagenr < ebda_end)
+		return 1;
+#else
+	if (!pagenr)
+		return 1;
+#ifdef CONFIG_VM86
+	if (pagenr < (ISA_START_ADDRESS >> PAGE_SHIFT))
+		return 1;
+#endif
+#endif
+
+	if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT))
 		return 1;
+#ifdef CONFIG_GRKERNSEC_KMEM
+	/* throw out everything else below 1MB */
+	if (pagenr <= 256)
+		return 0;
+#endif
 	if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
 		return 0;
 	if (!page_is_ram(pagenr))
@@ -370,8 +399,116 @@ void free_init_pages(char *what, unsigne
 #endif
 }
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+static inline void gr_init_ebda(void)
+{
+	unsigned int ebda_addr;
+	unsigned int ebda_size = 0;
+
+	ebda_addr = get_bios_ebda();
+	if (ebda_addr) {
+		ebda_size = *(unsigned char *)phys_to_virt(ebda_addr);
+		ebda_size <<= 10;
+	}
+	if (ebda_addr && ebda_size) {
+		ebda_start = ebda_addr >> PAGE_SHIFT;
+		ebda_end = min((unsigned int)PAGE_ALIGN(ebda_addr + ebda_size), (unsigned int)0xa0000) >> PAGE_SHIFT;
+	} else {
+		ebda_start = 0x9f000 >> PAGE_SHIFT;
+		ebda_end = 0xa0000 >> PAGE_SHIFT;
+	}
+}
+#else
+static inline void gr_init_ebda(void) { }
+#endif
+
 void free_initmem(void)
 {
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+	/* PaX: limit KERNEL_CS to actual size */
+	unsigned long addr, limit;
+	struct desc_struct d;
+	int cpu;
+#else
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+	unsigned long addr, end;
+#endif
+#endif
+
+	gr_init_ebda();
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+	limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext;
+	limit = (limit - 1UL) >> PAGE_SHIFT;
+
+	memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE);
+	for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+		pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC);
+		write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S);
+	}
+
+	/* PaX: make KERNEL_CS read-only */
+	addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text));
+	if (!paravirt_enabled())
+		set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT);
+/*
+		for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) {
+			pgd = pgd_offset_k(addr);
+			pud = pud_offset(pgd, addr);
+			pmd = pmd_offset(pud, addr);
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+		}
+*/
+#ifdef CONFIG_X86_PAE
+	set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT);
+/*
+	for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) {
+		pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+		set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
+	}
+*/
+#endif
+
+#ifdef CONFIG_MODULES
+	set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT);
+#endif
+
+#else
+	/* PaX: make kernel code/rodata read-only, rest non-executable */
+	for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) {
+		pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+		if (!pmd_present(*pmd))
+			continue;
+		if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata)
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+		else
+			set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
+	}
+
+	addr = (unsigned long)__va(__pa(__START_KERNEL_map));
+	end = addr + KERNEL_IMAGE_SIZE;
+	for (; addr < end; addr += PMD_SIZE) {
+		pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+		if (!pmd_present(*pmd))
+			continue;
+		if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata)))
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+	}
+#endif
+
+	flush_tlb_all();
+#endif
+
 	free_init_pages("unused kernel memory",
 			(unsigned long)(&__init_begin),
 			(unsigned long)(&__init_end));
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/iomap_32.c linux-3.2.22-g-v/arch/x86/mm/iomap_32.c
--- linux-3.2.22/arch/x86/mm/iomap_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/iomap_32.c	2012-07-11 20:20:37.127338527 +0200
@@ -64,7 +64,11 @@ void *kmap_atomic_prot_pfn(unsigned long
 	type = kmap_atomic_idx_push();
 	idx = type + KM_TYPE_NR * smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
+
+	pax_open_kernel();
 	set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
+	pax_close_kernel();
+
 	arch_flush_lazy_mmu_mode();
 
 	return (void *)vaddr;
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/ioremap.c linux-3.2.22-g-v/arch/x86/mm/ioremap.c
--- linux-3.2.22/arch/x86/mm/ioremap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/ioremap.c	2012-07-11 20:20:37.127338527 +0200
@@ -97,7 +97,7 @@ static void __iomem *__ioremap_caller(re
 	for (pfn = phys_addr >> PAGE_SHIFT; pfn <= last_pfn; pfn++) {
 		int is_ram = page_is_ram(pfn);
 
-		if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn)))
+		if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn))))
 			return NULL;
 		WARN_ON_ONCE(is_ram);
 	}
@@ -315,6 +315,9 @@ void *xlate_dev_mem_ptr(unsigned long ph
 
 	/* If page is RAM, we can use __va. Otherwise ioremap and unmap. */
 	if (page_is_ram(start >> PAGE_SHIFT))
+#ifdef CONFIG_HIGHMEM
+	if ((start >> PAGE_SHIFT) < max_low_pfn)
+#endif
 		return __va(phys);
 
 	addr = (void __force *)ioremap_cache(start, PAGE_SIZE);
@@ -344,7 +347,7 @@ static int __init early_ioremap_debug_se
 early_param("early_ioremap_debug", early_ioremap_debug_setup);
 
 static __initdata int after_paging_init;
-static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss;
+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE);
 
 static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
 {
@@ -381,8 +384,7 @@ void __init early_ioremap_init(void)
 		slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
 
 	pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
-	memset(bm_pte, 0, sizeof(bm_pte));
-	pmd_populate_kernel(&init_mm, pmd, bm_pte);
+	pmd_populate_user(&init_mm, pmd, bm_pte);
 
 	/*
 	 * The boot-ioremap range spans multiple pmds, for which
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/kmemcheck/kmemcheck.c linux-3.2.22-g-v/arch/x86/mm/kmemcheck/kmemcheck.c
--- linux-3.2.22/arch/x86/mm/kmemcheck/kmemcheck.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/kmemcheck/kmemcheck.c	2012-07-11 20:20:37.130681243 +0200
@@ -622,9 +622,9 @@ bool kmemcheck_fault(struct pt_regs *reg
 	 * memory (e.g. tracked pages)? For now, we need this to avoid
 	 * invoking kmemcheck for PnP BIOS calls.
 	 */
-	if (regs->flags & X86_VM_MASK)
+	if (v8086_mode(regs))
 		return false;
-	if (regs->cs != __KERNEL_CS)
+	if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS)
 		return false;
 
 	pte = kmemcheck_pte_lookup(address);
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/mmap.c linux-3.2.22-g-v/arch/x86/mm/mmap.c
--- linux-3.2.22/arch/x86/mm/mmap.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/mmap.c	2012-07-11 20:20:37.130681243 +0200
@@ -52,7 +52,7 @@ static unsigned int stack_maxrandom_size
  * Leave an at least ~128 MB hole with possible stack randomization.
  */
 #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size())
-#define MAX_GAP (TASK_SIZE/6*5)
+#define MAX_GAP (pax_task_size/6*5)
 
 static int mmap_is_legacy(void)
 {
@@ -82,27 +82,40 @@ static unsigned long mmap_rnd(void)
 	return rnd << PAGE_SHIFT;
 }
 
-static unsigned long mmap_base(void)
+static unsigned long mmap_base(struct mm_struct *mm)
 {
 	unsigned long gap = rlimit(RLIMIT_STACK);
+	unsigned long pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
 
 	if (gap < MIN_GAP)
 		gap = MIN_GAP;
 	else if (gap > MAX_GAP)
 		gap = MAX_GAP;
 
-	return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
+	return PAGE_ALIGN(pax_task_size - gap - mmap_rnd());
 }
 
 /*
  * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64
  * does, but not when emulating X86_32
  */
-static unsigned long mmap_legacy_base(void)
+static unsigned long mmap_legacy_base(struct mm_struct *mm)
 {
-	if (mmap_is_ia32())
+	if (mmap_is_ia32()) {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		if (mm->pax_flags & MF_PAX_SEGMEXEC)
+			return SEGMEXEC_TASK_UNMAPPED_BASE;
+		else
+#endif
+
 		return TASK_UNMAPPED_BASE;
-	else
+	} else
 		return TASK_UNMAPPED_BASE + mmap_rnd();
 }
 
@@ -113,11 +126,23 @@ static unsigned long mmap_legacy_base(vo
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
 	if (mmap_is_legacy()) {
-		mm->mmap_base = mmap_legacy_base();
+		mm->mmap_base = mmap_legacy_base(mm);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 		mm->unmap_area = arch_unmap_area;
 	} else {
-		mm->mmap_base = mmap_base();
+		mm->mmap_base = mmap_base(mm);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 		mm->unmap_area = arch_unmap_area_topdown;
 	}
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/mmio-mod.c linux-3.2.22-g-v/arch/x86/mm/mmio-mod.c
--- linux-3.2.22/arch/x86/mm/mmio-mod.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/mmio-mod.c	2012-07-11 20:20:37.130681243 +0200
@@ -194,7 +194,7 @@ static void pre(struct kmmio_probe *p, s
 		break;
 	default:
 		{
-			unsigned char *ip = (unsigned char *)instptr;
+			unsigned char *ip = (unsigned char *)ktla_ktva(instptr);
 			my_trace->opcode = MMIO_UNKNOWN_OP;
 			my_trace->width = 0;
 			my_trace->value = (*ip) << 16 | *(ip + 1) << 8 |
@@ -234,7 +234,7 @@ static void post(struct kmmio_probe *p, 
 static void ioremap_trace_core(resource_size_t offset, unsigned long size,
 							void __iomem *addr)
 {
-	static atomic_t next_id;
+	static atomic_unchecked_t next_id;
 	struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL);
 	/* These are page-unaligned. */
 	struct mmiotrace_map map = {
@@ -258,7 +258,7 @@ static void ioremap_trace_core(resource_
 			.private = trace
 		},
 		.phys = offset,
-		.id = atomic_inc_return(&next_id)
+		.id = atomic_inc_return_unchecked(&next_id)
 	};
 	map.map_id = trace->id;
 
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pageattr.c linux-3.2.22-g-v/arch/x86/mm/pageattr.c
--- linux-3.2.22/arch/x86/mm/pageattr.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pageattr.c	2012-07-11 20:20:37.130681243 +0200
@@ -261,7 +261,7 @@ static inline pgprot_t static_protection
 	 */
 #ifdef CONFIG_PCI_BIOS
 	if (pcibios_enabled && within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT))
-		pgprot_val(forbidden) |= _PAGE_NX;
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
 #endif
 
 	/*
@@ -269,9 +269,10 @@ static inline pgprot_t static_protection
 	 * Does not cover __inittext since that is gone later on. On
 	 * 64bit we do not enforce !NX on the low mapping
 	 */
-	if (within(address, (unsigned long)_text, (unsigned long)_etext))
-		pgprot_val(forbidden) |= _PAGE_NX;
+	if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext)))
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
 
+#ifdef CONFIG_DEBUG_RODATA
 	/*
 	 * The .rodata section needs to be read-only. Using the pfn
 	 * catches all aliases.
@@ -279,6 +280,7 @@ static inline pgprot_t static_protection
 	if (within(pfn, __pa((unsigned long)__start_rodata) >> PAGE_SHIFT,
 		   __pa((unsigned long)__end_rodata) >> PAGE_SHIFT))
 		pgprot_val(forbidden) |= _PAGE_RW;
+#endif
 
 #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA)
 	/*
@@ -317,6 +319,13 @@ static inline pgprot_t static_protection
 	}
 #endif
 
+#ifdef CONFIG_PAX_KERNEXEC
+	if (within(pfn, __pa((unsigned long)&_text), __pa((unsigned long)&_sdata))) {
+		pgprot_val(forbidden) |= _PAGE_RW;
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
+	}
+#endif
+
 	prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden));
 
 	return prot;
@@ -369,23 +378,37 @@ EXPORT_SYMBOL_GPL(lookup_address);
 static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
 {
 	/* change init_mm */
+	pax_open_kernel();
 	set_pte_atomic(kpte, pte);
+
 #ifdef CONFIG_X86_32
 	if (!SHARED_KERNEL_PMD) {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = get_cpu_pgd(cpu);
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
-			pgd_t *pgd;
+			pgd_t *pgd = (pgd_t *)page_address(page);
+#endif
+
 			pud_t *pud;
 			pmd_t *pmd;
 
-			pgd = (pgd_t *)page_address(page) + pgd_index(address);
+			pgd += pgd_index(address);
 			pud = pud_offset(pgd, address);
 			pmd = pmd_offset(pud, address);
 			set_pte_atomic((pte_t *)pmd, pte);
 		}
 	}
 #endif
+	pax_close_kernel();
 }
 
 static int
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pageattr-test.c linux-3.2.22-g-v/arch/x86/mm/pageattr-test.c
--- linux-3.2.22/arch/x86/mm/pageattr-test.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pageattr-test.c	2012-07-11 20:20:37.130681243 +0200
@@ -36,7 +36,7 @@ enum {
 
 static int pte_testbit(pte_t pte)
 {
-	return pte_flags(pte) & _PAGE_UNUSED1;
+	return pte_flags(pte) & _PAGE_CPA_TEST;
 }
 
 struct split_state {
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pat.c linux-3.2.22-g-v/arch/x86/mm/pat.c
--- linux-3.2.22/arch/x86/mm/pat.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pat.c	2012-07-11 20:20:37.134027349 +0200
@@ -361,7 +361,7 @@ int free_memtype(u64 start, u64 end)
 
 	if (!entry) {
 		printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n",
-			current->comm, current->pid, start, end);
+			current->comm, task_pid_nr(current), start, end);
 		return -EINVAL;
 	}
 
@@ -492,8 +492,8 @@ static inline int range_is_allowed(unsig
 	while (cursor < to) {
 		if (!devmem_is_allowed(pfn)) {
 			printk(KERN_INFO
-		"Program %s tried to access /dev/mem between %Lx->%Lx.\n",
-				current->comm, from, to);
+		"Program %s tried to access /dev/mem between %Lx->%Lx (%Lx).\n",
+				current->comm, from, to, cursor);
 			return 0;
 		}
 		cursor += PAGE_SIZE;
@@ -557,7 +557,7 @@ int kernel_map_sync_memtype(u64 base, un
 		printk(KERN_INFO
 			"%s:%d ioremap_change_attr failed %s "
 			"for %Lx-%Lx\n",
-			current->comm, current->pid,
+			current->comm, task_pid_nr(current),
 			cattr_name(flags),
 			base, (unsigned long long)(base + size));
 		return -EINVAL;
@@ -593,7 +593,7 @@ static int reserve_pfn_range(u64 paddr, 
 		if (want_flags != flags) {
 			printk(KERN_WARNING
 			"%s:%d map pfn RAM range req %s for %Lx-%Lx, got %s\n",
-				current->comm, current->pid,
+				current->comm, task_pid_nr(current),
 				cattr_name(want_flags),
 				(unsigned long long)paddr,
 				(unsigned long long)(paddr + size),
@@ -615,7 +615,7 @@ static int reserve_pfn_range(u64 paddr, 
 			free_memtype(paddr, paddr + size);
 			printk(KERN_ERR "%s:%d map pfn expected mapping type %s"
 				" for %Lx-%Lx, got %s\n",
-				current->comm, current->pid,
+				current->comm, task_pid_nr(current),
 				cattr_name(want_flags),
 				(unsigned long long)paddr,
 				(unsigned long long)(paddr + size),
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pf_in.c linux-3.2.22-g-v/arch/x86/mm/pf_in.c
--- linux-3.2.22/arch/x86/mm/pf_in.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pf_in.c	2012-07-11 20:20:37.134027349 +0200
@@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned l
 	int i;
 	enum reason_type rv = OTHERS;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(un
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned 
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -415,7 +415,7 @@ unsigned long get_ins_reg_val(unsigned l
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 	for (i = 0; i < ARRAY_SIZE(reg_rop); i++)
@@ -470,7 +470,7 @@ unsigned long get_ins_imm_val(unsigned l
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 	for (i = 0; i < ARRAY_SIZE(imm_wop); i++)
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pgtable_32.c linux-3.2.22-g-v/arch/x86/mm/pgtable_32.c
--- linux-3.2.22/arch/x86/mm/pgtable_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pgtable_32.c	2012-07-11 20:20:37.134027349 +0200
@@ -48,10 +48,13 @@ void set_pte_vaddr(unsigned long vaddr, 
 		return;
 	}
 	pte = pte_offset_kernel(pmd, vaddr);
+
+	pax_open_kernel();
 	if (pte_val(pteval))
 		set_pte_at(&init_mm, vaddr, pte, pteval);
 	else
 		pte_clear(&init_mm, vaddr, pte);
+	pax_close_kernel();
 
 	/*
 	 * It's enough to flush this one mapping.
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/pgtable.c linux-3.2.22-g-v/arch/x86/mm/pgtable.c
--- linux-3.2.22/arch/x86/mm/pgtable.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/pgtable.c	2012-07-11 20:20:37.134027349 +0200
@@ -84,10 +84,64 @@ static inline void pgd_list_del(pgd_t *p
 	list_del(&page->lru);
 }
 
-#define UNSHARED_PTRS_PER_PGD				\
-	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT;
+
+void __shadow_user_pgds(pgd_t *dst, const pgd_t *src)
+{
+	unsigned int count = USER_PGD_PTRS;
+
+	while (count--)
+		*dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER);
+}
+#endif
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+void __clone_user_pgds(pgd_t *dst, const pgd_t *src)
+{
+	unsigned int count = USER_PGD_PTRS;
 
+	while (count--) {
+		pgd_t pgd;
+
+#ifdef CONFIG_X86_64
+		pgd = __pgd(pgd_val(*src++) | _PAGE_USER);
+#else
+		pgd = *src++;
+#endif
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		pgd = __pgd(pgd_val(pgd) & clone_pgd_mask);
+#endif
+
+		*dst++ = pgd;
+	}
+
+}
+#endif
+
+#ifdef CONFIG_X86_64
+#define pxd_t				pud_t
+#define pyd_t				pgd_t
+#define paravirt_release_pxd(pfn)	paravirt_release_pud(pfn)
+#define pxd_free(mm, pud)		pud_free((mm), (pud))
+#define pyd_populate(mm, pgd, pud)	pgd_populate((mm), (pgd), (pud))
+#define pyd_offset(mm, address)		pgd_offset((mm), (address))
+#define PYD_SIZE			PGDIR_SIZE
+#else
+#define pxd_t				pmd_t
+#define pyd_t				pud_t
+#define paravirt_release_pxd(pfn)	paravirt_release_pmd(pfn)
+#define pxd_free(mm, pud)		pmd_free((mm), (pud))
+#define pyd_populate(mm, pgd, pud)	pud_populate((mm), (pgd), (pud))
+#define pyd_offset(mm, address)		pud_offset((mm), (address))
+#define PYD_SIZE			PUD_SIZE
+#endif
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+static inline void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) {}
+static inline void pgd_dtor(pgd_t *pgd) {}
+#else
 static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm)
 {
 	BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm));
@@ -128,6 +182,7 @@ static void pgd_dtor(pgd_t *pgd)
 	pgd_list_del(pgd);
 	spin_unlock(&pgd_lock);
 }
+#endif
 
 /*
  * List of all pgd's needed for non-PAE so it can invalidate entries
@@ -140,7 +195,7 @@ static void pgd_dtor(pgd_t *pgd)
  * -- wli
  */
 
-#ifdef CONFIG_X86_PAE
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
 /*
  * In PAE mode, we need to do a cr3 reload (=tlb flush) when
  * updating the top-level pagetable entries to guarantee the
@@ -152,7 +207,7 @@ static void pgd_dtor(pgd_t *pgd)
  * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate
  * and initialize the kernel pmds here.
  */
-#define PREALLOCATED_PMDS	UNSHARED_PTRS_PER_PGD
+#define PREALLOCATED_PXDS	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
 
 void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
 {
@@ -170,36 +225,38 @@ void pud_populate(struct mm_struct *mm, 
 	 */
 	flush_tlb_mm(mm);
 }
+#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD)
+#define PREALLOCATED_PXDS	USER_PGD_PTRS
 #else  /* !CONFIG_X86_PAE */
 
 /* No need to prepopulate any pagetable entries in non-PAE modes. */
-#define PREALLOCATED_PMDS	0
+#define PREALLOCATED_PXDS	0
 
 #endif	/* CONFIG_X86_PAE */
 
-static void free_pmds(pmd_t *pmds[])
+static void free_pxds(pxd_t *pxds[])
 {
 	int i;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++)
-		if (pmds[i])
-			free_page((unsigned long)pmds[i]);
+	for(i = 0; i < PREALLOCATED_PXDS; i++)
+		if (pxds[i])
+			free_page((unsigned long)pxds[i]);
 }
 
-static int preallocate_pmds(pmd_t *pmds[])
+static int preallocate_pxds(pxd_t *pxds[])
 {
 	int i;
 	bool failed = false;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
-		pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP);
-		if (pmd == NULL)
+	for(i = 0; i < PREALLOCATED_PXDS; i++) {
+		pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP);
+		if (pxd == NULL)
 			failed = true;
-		pmds[i] = pmd;
+		pxds[i] = pxd;
 	}
 
 	if (failed) {
-		free_pmds(pmds);
+		free_pxds(pxds);
 		return -ENOMEM;
 	}
 
@@ -212,51 +269,55 @@ static int preallocate_pmds(pmd_t *pmds[
  * preallocate which never got a corresponding vma will need to be
  * freed manually.
  */
-static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
+static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp)
 {
 	int i;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
+	for(i = 0; i < PREALLOCATED_PXDS; i++) {
 		pgd_t pgd = pgdp[i];
 
 		if (pgd_val(pgd) != 0) {
-			pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd);
+			pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd);
 
-			pgdp[i] = native_make_pgd(0);
+			set_pgd(pgdp + i, native_make_pgd(0));
 
-			paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT);
-			pmd_free(mm, pmd);
+			paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT);
+			pxd_free(mm, pxd);
 		}
 	}
 }
 
-static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
+static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[])
 {
-	pud_t *pud;
+	pyd_t *pyd;
 	unsigned long addr;
 	int i;
 
-	if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
+	if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */
 		return;
 
-	pud = pud_offset(pgd, 0);
+#ifdef CONFIG_X86_64
+	pyd = pyd_offset(mm, 0L);
+#else
+	pyd = pyd_offset(pgd, 0L);
+#endif
 
- 	for (addr = i = 0; i < PREALLOCATED_PMDS;
-	     i++, pud++, addr += PUD_SIZE) {
-		pmd_t *pmd = pmds[i];
+ 	for (addr = i = 0; i < PREALLOCATED_PXDS;
+	     i++, pyd++, addr += PYD_SIZE) {
+		pxd_t *pxd = pxds[i];
 
 		if (i >= KERNEL_PGD_BOUNDARY)
-			memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
-			       sizeof(pmd_t) * PTRS_PER_PMD);
+			memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
+			       sizeof(pxd_t) * PTRS_PER_PMD);
 
-		pud_populate(mm, pud, pmd);
+		pyd_populate(mm, pyd, pxd);
 	}
 }
 
 pgd_t *pgd_alloc(struct mm_struct *mm)
 {
 	pgd_t *pgd;
-	pmd_t *pmds[PREALLOCATED_PMDS];
+	pxd_t *pxds[PREALLOCATED_PXDS];
 
 	pgd = (pgd_t *)__get_free_page(PGALLOC_GFP);
 
@@ -265,11 +326,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
 
 	mm->pgd = pgd;
 
-	if (preallocate_pmds(pmds) != 0)
+	if (preallocate_pxds(pxds) != 0)
 		goto out_free_pgd;
 
 	if (paravirt_pgd_alloc(mm) != 0)
-		goto out_free_pmds;
+		goto out_free_pxds;
 
 	/*
 	 * Make sure that pre-populating the pmds is atomic with
@@ -279,14 +340,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
 	spin_lock(&pgd_lock);
 
 	pgd_ctor(mm, pgd);
-	pgd_prepopulate_pmd(mm, pgd, pmds);
+	pgd_prepopulate_pxd(mm, pgd, pxds);
 
 	spin_unlock(&pgd_lock);
 
 	return pgd;
 
-out_free_pmds:
-	free_pmds(pmds);
+out_free_pxds:
+	free_pxds(pxds);
 out_free_pgd:
 	free_page((unsigned long)pgd);
 out:
@@ -295,7 +356,7 @@ out:
 
 void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
-	pgd_mop_up_pmds(mm, pgd);
+	pgd_mop_up_pxds(mm, pgd);
 	pgd_dtor(pgd);
 	paravirt_pgd_free(mm, pgd);
 	free_page((unsigned long)pgd);
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/setup_nx.c linux-3.2.22-g-v/arch/x86/mm/setup_nx.c
--- linux-3.2.22/arch/x86/mm/setup_nx.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/setup_nx.c	2012-07-11 20:20:37.137308528 +0200
@@ -5,8 +5,10 @@
 #include <asm/pgtable.h>
 #include <asm/proto.h>
 
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 static int disable_nx __cpuinitdata;
 
+#ifndef CONFIG_PAX_PAGEEXEC
 /*
  * noexec = on|off
  *
@@ -28,12 +30,17 @@ static int __init noexec_setup(char *str
 	return 0;
 }
 early_param("noexec", noexec_setup);
+#endif
+
+#endif
 
 void __cpuinit x86_configure_nx(void)
 {
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 	if (cpu_has_nx && !disable_nx)
 		__supported_pte_mask |= _PAGE_NX;
 	else
+#endif
 		__supported_pte_mask &= ~_PAGE_NX;
 }
 
diff -NurpP --minimal linux-3.2.22/arch/x86/mm/tlb.c linux-3.2.22-g-v/arch/x86/mm/tlb.c
--- linux-3.2.22/arch/x86/mm/tlb.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/mm/tlb.c	2012-07-11 20:20:37.137308528 +0200
@@ -65,7 +65,11 @@ void leave_mm(int cpu)
 		BUG();
 	cpumask_clear_cpu(cpu,
 			  mm_cpumask(percpu_read(cpu_tlbstate.active_mm)));
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 	load_cr3(swapper_pg_dir);
+#endif
+
 }
 EXPORT_SYMBOL_GPL(leave_mm);
 
diff -NurpP --minimal linux-3.2.22/arch/x86/net/bpf_jit_comp.c linux-3.2.22-g-v/arch/x86/net/bpf_jit_comp.c
--- linux-3.2.22/arch/x86/net/bpf_jit_comp.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/net/bpf_jit_comp.c	2012-07-11 20:20:37.137308528 +0200
@@ -117,6 +117,10 @@ static inline void bpf_flush_icache(void
 	set_fs(old_fs);
 }
 
+struct bpf_jit_work {
+	struct work_struct work;
+	void *image;
+};
 
 void bpf_jit_compile(struct sk_filter *fp)
 {
@@ -141,6 +145,10 @@ void bpf_jit_compile(struct sk_filter *f
 	if (addrs == NULL)
 		return;
 
+	fp->work = kmalloc(sizeof(*fp->work), GFP_KERNEL);
+	if (!fp->work)
+		goto out;
+
 	/* Before first pass, make a rough estimation of addrs[]
 	 * each bpf instruction is translated to less than 64 bytes
 	 */
@@ -477,7 +485,7 @@ void bpf_jit_compile(struct sk_filter *f
 common_load:			seen |= SEEN_DATAREF;
 				if ((int)K < 0) {
 					/* Abort the JIT because __load_pointer() is needed. */
-					goto out;
+					goto error;
 				}
 				t_offset = func - (image + addrs[i]);
 				EMIT1_off32(0xbe, K); /* mov imm32,%esi */
@@ -492,7 +500,7 @@ common_load:			seen |= SEEN_DATAREF;
 			case BPF_S_LDX_B_MSH:
 				if ((int)K < 0) {
 					/* Abort the JIT because __load_pointer() is needed. */
-					goto out;
+					goto error;
 				}
 				seen |= SEEN_DATAREF | SEEN_XREG;
 				t_offset = sk_load_byte_msh - (image + addrs[i]);
@@ -582,17 +590,18 @@ cond_branch:			f_offset = addrs[i + filt
 				break;
 			default:
 				/* hmm, too complex filter, give up with jit compiler */
-				goto out;
+				goto error;
 			}
 			ilen = prog - temp;
 			if (image) {
 				if (unlikely(proglen + ilen > oldproglen)) {
 					pr_err("bpb_jit_compile fatal error\n");
-					kfree(addrs);
-					module_free(NULL, image);
-					return;
+					module_free_exec(NULL, image);
+					goto error;
 				}
+				pax_open_kernel();
 				memcpy(image + proglen, temp, ilen);
+				pax_close_kernel();
 			}
 			proglen += ilen;
 			addrs[i] = proglen;
@@ -613,11 +622,9 @@ cond_branch:			f_offset = addrs[i + filt
 			break;
 		}
 		if (proglen == oldproglen) {
-			image = module_alloc(max_t(unsigned int,
-						   proglen,
-						   sizeof(struct work_struct)));
+			image = module_alloc_exec(proglen);
 			if (!image)
-				goto out;
+				goto error;
 		}
 		oldproglen = proglen;
 	}
@@ -633,7 +640,10 @@ cond_branch:			f_offset = addrs[i + filt
 		bpf_flush_icache(image, image + proglen);
 
 		fp->bpf_func = (void *)image;
-	}
+	} else
+error:
+		kfree(fp->work);
+
 out:
 	kfree(addrs);
 	return;
@@ -641,18 +651,20 @@ out:
 
 static void jit_free_defer(struct work_struct *arg)
 {
-	module_free(NULL, arg);
+	module_free_exec(NULL, ((struct bpf_jit_work *)arg)->image);
+	kfree(arg);
 }
 
 /* run from softirq, we must use a work_struct to call
- * module_free() from process context
+ * module_free_exec() from process context
  */
 void bpf_jit_free(struct sk_filter *fp)
 {
 	if (fp->bpf_func != sk_run_filter) {
-		struct work_struct *work = (struct work_struct *)fp->bpf_func;
+		struct work_struct *work = &fp->work->work;
 
 		INIT_WORK(work, jit_free_defer);
+		fp->work->image = fp->bpf_func;
 		schedule_work(work);
 	}
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/net/bpf_jit.S linux-3.2.22-g-v/arch/x86/net/bpf_jit.S
--- linux-3.2.22/arch/x86/net/bpf_jit.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/net/bpf_jit.S	2012-07-11 20:20:37.137308528 +0200
@@ -9,6 +9,7 @@
  */
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 /*
  * Calling convention :
@@ -35,6 +36,7 @@ sk_load_word:
 	jle	bpf_slow_path_word
 	mov     (SKBDATA,%rsi),%eax
 	bswap   %eax  			/* ntohl() */
+	pax_force_retaddr
 	ret
 
 
@@ -53,6 +55,7 @@ sk_load_half:
 	jle	bpf_slow_path_half
 	movzwl	(SKBDATA,%rsi),%eax
 	rol	$8,%ax			# ntohs()
+	pax_force_retaddr
 	ret
 
 sk_load_byte_ind:
@@ -66,6 +69,7 @@ sk_load_byte:
 	cmp	%esi,%r9d   /* if (offset >= hlen) goto bpf_slow_path_byte */
 	jle	bpf_slow_path_byte
 	movzbl	(SKBDATA,%rsi),%eax
+	pax_force_retaddr
 	ret
 
 /**
@@ -82,6 +86,7 @@ ENTRY(sk_load_byte_msh)
 	movzbl	(SKBDATA,%rsi),%ebx
 	and	$15,%bl
 	shl	$2,%bl
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(sk_load_byte_msh)
@@ -91,6 +96,7 @@ bpf_error:
 	xor		%eax,%eax
 	mov		-8(%rbp),%rbx
 	leaveq
+	pax_force_retaddr
 	ret
 
 /* rsi contains offset and can be scratched */
@@ -113,6 +119,7 @@ bpf_slow_path_word:
 	js	bpf_error
 	mov	-12(%rbp),%eax
 	bswap	%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_half:
@@ -121,12 +128,14 @@ bpf_slow_path_half:
 	mov	-12(%rbp),%ax
 	rol	$8,%ax
 	movzwl	%ax,%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_byte:
 	bpf_slow_path_common(1)
 	js	bpf_error
 	movzbl	-12(%rbp),%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_byte_msh:
@@ -137,4 +146,5 @@ bpf_slow_path_byte_msh:
 	and	$15,%al
 	shl	$2,%al
 	xchg	%eax,%ebx
+	pax_force_retaddr
 	ret
diff -NurpP --minimal linux-3.2.22/arch/x86/oprofile/backtrace.c linux-3.2.22-g-v/arch/x86/oprofile/backtrace.c
--- linux-3.2.22/arch/x86/oprofile/backtrace.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/oprofile/backtrace.c	2012-07-11 20:20:37.137308528 +0200
@@ -46,11 +46,11 @@ dump_user_backtrace_32(struct stack_fram
 	struct stack_frame_ia32 *fp;
 	unsigned long bytes;
 
-	bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
+	bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
 	if (bytes != sizeof(bufhead))
 		return NULL;
 
-	fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame);
+	fp = (struct stack_frame_ia32 __force_kernel *) compat_ptr(bufhead[0].next_frame);
 
 	oprofile_add_trace(bufhead[0].return_address);
 
@@ -92,7 +92,7 @@ static struct stack_frame *dump_user_bac
 	struct stack_frame bufhead[2];
 	unsigned long bytes;
 
-	bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
+	bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
 	if (bytes != sizeof(bufhead))
 		return NULL;
 
@@ -111,7 +111,7 @@ x86_backtrace(struct pt_regs * const reg
 {
 	struct stack_frame *head = (struct stack_frame *)frame_pointer(regs);
 
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		unsigned long stack = kernel_stack_pointer(regs);
 		if (depth)
 			dump_trace(NULL, regs, (unsigned long *)stack, 0,
diff -NurpP --minimal linux-3.2.22/arch/x86/pci/mrst.c linux-3.2.22-g-v/arch/x86/pci/mrst.c
--- linux-3.2.22/arch/x86/pci/mrst.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/pci/mrst.c	2012-07-11 20:20:37.140783580 +0200
@@ -234,7 +234,9 @@ int __init pci_mrst_init(void)
 	printk(KERN_INFO "Moorestown platform detected, using MRST PCI ops\n");
 	pci_mmcfg_late_init();
 	pcibios_enable_irq = mrst_pci_irq_enable;
-	pci_root_ops = pci_mrst_ops;
+	pax_open_kernel();
+	memcpy((void *)&pci_root_ops, &pci_mrst_ops, sizeof(pci_mrst_ops));
+	pax_close_kernel();
 	/* Continue with standard init */
 	return 1;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/pci/pcbios.c linux-3.2.22-g-v/arch/x86/pci/pcbios.c
--- linux-3.2.22/arch/x86/pci/pcbios.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/pci/pcbios.c	2012-07-11 20:20:37.140783580 +0200
@@ -79,50 +79,93 @@ union bios32 {
 static struct {
 	unsigned long address;
 	unsigned short segment;
-} bios32_indirect = { 0, __KERNEL_CS };
+} bios32_indirect __read_only = { 0, __PCIBIOS_CS };
 
 /*
  * Returns the entry point for the given service, NULL on error
  */
 
-static unsigned long bios32_service(unsigned long service)
+static unsigned long __devinit bios32_service(unsigned long service)
 {
 	unsigned char return_code;	/* %al */
 	unsigned long address;		/* %ebx */
 	unsigned long length;		/* %ecx */
 	unsigned long entry;		/* %edx */
 	unsigned long flags;
+	struct desc_struct d, *gdt;
 
 	local_irq_save(flags);
-	__asm__("lcall *(%%edi); cld"
+
+	gdt = get_cpu_gdt_table(smp_processor_id());
+
+	pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC);
+	write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
+	pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC);
+	write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
+
+	__asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld"
 		: "=a" (return_code),
 		  "=b" (address),
 		  "=c" (length),
 		  "=d" (entry)
 		: "0" (service),
 		  "1" (0),
-		  "D" (&bios32_indirect));
+		  "D" (&bios32_indirect),
+		  "r"(__PCIBIOS_DS)
+		: "memory");
+
+	pax_open_kernel();
+	gdt[GDT_ENTRY_PCIBIOS_CS].a = 0;
+	gdt[GDT_ENTRY_PCIBIOS_CS].b = 0;
+	gdt[GDT_ENTRY_PCIBIOS_DS].a = 0;
+	gdt[GDT_ENTRY_PCIBIOS_DS].b = 0;
+	pax_close_kernel();
+
 	local_irq_restore(flags);
 
 	switch (return_code) {
-		case 0:
-			return address + entry;
-		case 0x80:	/* Not present */
-			printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
-			return 0;
-		default: /* Shouldn't happen */
-			printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
-				service, return_code);
+	case 0: {
+		int cpu;
+		unsigned char flags;
+
+		printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry);
+		if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) {
+			printk(KERN_WARNING "bios32_service: not valid\n");
 			return 0;
+		}
+		address = address + PAGE_OFFSET;
+		length += 16UL; /* some BIOSs underreport this... */
+		flags = 4;
+		if (length >= 64*1024*1024) {
+			length >>= PAGE_SHIFT;
+			flags |= 8;
+		}
+
+		for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+			gdt = get_cpu_gdt_table(cpu);
+			pack_descriptor(&d, address, length, 0x9b, flags);
+			write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
+			pack_descriptor(&d, address, length, 0x93, flags);
+			write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
+		}
+		return entry;
+	}
+	case 0x80:	/* Not present */
+		printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
+		return 0;
+	default: /* Shouldn't happen */
+		printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
+			service, return_code);
+		return 0;
 	}
 }
 
 static struct {
 	unsigned long address;
 	unsigned short segment;
-} pci_indirect = { 0, __KERNEL_CS };
+} pci_indirect __read_only = { 0, __PCIBIOS_CS };
 
-static int pci_bios_present;
+static int pci_bios_present __read_only;
 
 static int __devinit check_pcibios(void)
 {
@@ -131,11 +174,13 @@ static int __devinit check_pcibios(void)
 	unsigned long flags, pcibios_entry;
 
 	if ((pcibios_entry = bios32_service(PCI_SERVICE))) {
-		pci_indirect.address = pcibios_entry + PAGE_OFFSET;
+		pci_indirect.address = pcibios_entry;
 
 		local_irq_save(flags);
-		__asm__(
-			"lcall *(%%edi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%edi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -144,7 +189,8 @@ static int __devinit check_pcibios(void)
 			  "=b" (ebx),
 			  "=c" (ecx)
 			: "1" (PCIBIOS_PCI_BIOS_PRESENT),
-			  "D" (&pci_indirect)
+			  "D" (&pci_indirect),
+			  "r" (__PCIBIOS_DS)
 			: "memory");
 		local_irq_restore(flags);
 
@@ -189,7 +235,10 @@ static int pci_bios_read(unsigned int se
 
 	switch (len) {
 	case 1:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -198,7 +247,8 @@ static int pci_bios_read(unsigned int se
 			: "1" (PCIBIOS_READ_CONFIG_BYTE),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		/*
 		 * Zero-extend the result beyond 8 bits, do not trust the
 		 * BIOS having done it:
@@ -206,7 +256,10 @@ static int pci_bios_read(unsigned int se
 		*value &= 0xff;
 		break;
 	case 2:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -215,7 +268,8 @@ static int pci_bios_read(unsigned int se
 			: "1" (PCIBIOS_READ_CONFIG_WORD),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		/*
 		 * Zero-extend the result beyond 16 bits, do not trust the
 		 * BIOS having done it:
@@ -223,7 +277,10 @@ static int pci_bios_read(unsigned int se
 		*value &= 0xffff;
 		break;
 	case 4:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -232,7 +289,8 @@ static int pci_bios_read(unsigned int se
 			: "1" (PCIBIOS_READ_CONFIG_DWORD),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	}
 
@@ -256,7 +314,10 @@ static int pci_bios_write(unsigned int s
 
 	switch (len) {
 	case 1:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -265,10 +326,14 @@ static int pci_bios_write(unsigned int s
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	case 2:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -277,10 +342,14 @@ static int pci_bios_write(unsigned int s
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	case 4:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -289,7 +358,8 @@ static int pci_bios_write(unsigned int s
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	}
 
@@ -394,10 +464,13 @@ struct irq_routing_table * pcibios_get_i
 
 	DBG("PCI: Fetching IRQ routing table... ");
 	__asm__("push %%es\n\t"
+		"movw %w8, %%ds\n\t"
 		"push %%ds\n\t"
 		"pop  %%es\n\t"
-		"lcall *(%%esi); cld\n\t"
+		"lcall *%%ss:(%%esi); cld\n\t"
 		"pop %%es\n\t"
+		"push %%ss\n\t"
+		"pop %%ds\n"
 		"jc 1f\n\t"
 		"xor %%ah, %%ah\n"
 		"1:"
@@ -408,7 +481,8 @@ struct irq_routing_table * pcibios_get_i
 		  "1" (0),
 		  "D" ((long) &opt),
 		  "S" (&pci_indirect),
-		  "m" (opt)
+		  "m" (opt),
+		  "r" (__PCIBIOS_DS)
 		: "memory");
 	DBG("OK  ret=%d, size=%d, map=%x\n", ret, opt.size, map);
 	if (ret & 0xff00)
@@ -432,7 +506,10 @@ int pcibios_set_irq_routing(struct pci_d
 {
 	int ret;
 
-	__asm__("lcall *(%%esi); cld\n\t"
+	__asm__("movw %w5, %%ds\n\t"
+		"lcall *%%ss:(%%esi); cld\n\t"
+		"push %%ss\n\t"
+		"pop %%ds\n"
 		"jc 1f\n\t"
 		"xor %%ah, %%ah\n"
 		"1:"
@@ -440,7 +517,8 @@ int pcibios_set_irq_routing(struct pci_d
 		: "0" (PCIBIOS_SET_PCI_HW_INT),
 		  "b" ((dev->bus->number << 8) | dev->devfn),
 		  "c" ((irq << 8) | (pin + 10)),
-		  "S" (&pci_indirect));
+		  "S" (&pci_indirect),
+		  "r" (__PCIBIOS_DS));
 	return !(ret & 0xff00);
 }
 EXPORT_SYMBOL(pcibios_set_irq_routing);
diff -NurpP --minimal linux-3.2.22/arch/x86/platform/efi/efi_32.c linux-3.2.22-g-v/arch/x86/platform/efi/efi_32.c
--- linux-3.2.22/arch/x86/platform/efi/efi_32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/platform/efi/efi_32.c	2012-07-11 20:20:37.140783580 +0200
@@ -44,11 +44,22 @@ void efi_call_phys_prelog(void)
 {
 	struct desc_ptr gdt_descr;
 
+#ifdef CONFIG_PAX_KERNEXEC
+	struct desc_struct d;
+#endif
+
 	local_irq_save(efi_rt_eflags);
 
 	load_cr3(initial_page_table);
 	__flush_tlb_all();
 
+#ifdef CONFIG_PAX_KERNEXEC
+	pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
+	pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
+#endif
+
 	gdt_descr.address = __pa(get_cpu_gdt_table(0));
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
@@ -58,6 +69,14 @@ void efi_call_phys_epilog(void)
 {
 	struct desc_ptr gdt_descr;
 
+#ifdef CONFIG_PAX_KERNEXEC
+	struct desc_struct d;
+
+	memset(&d, 0, sizeof d);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
+#endif
+
 	gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
diff -NurpP --minimal linux-3.2.22/arch/x86/platform/efi/efi_stub_32.S linux-3.2.22-g-v/arch/x86/platform/efi/efi_stub_32.S
--- linux-3.2.22/arch/x86/platform/efi/efi_stub_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/platform/efi/efi_stub_32.S	2012-07-11 20:20:37.140783580 +0200
@@ -6,7 +6,9 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 #include <asm/page_types.h>
+#include <asm/segment.h>
 
 /*
  * efi_call_phys(void *, ...) is a function with variable parameters.
@@ -20,7 +22,7 @@
  * service functions will comply with gcc calling convention, too.
  */
 
-.text
+__INIT
 ENTRY(efi_call_phys)
 	/*
 	 * 0. The function can only be called in Linux kernel. So CS has been
@@ -36,9 +38,11 @@ ENTRY(efi_call_phys)
 	 * The mapping of lower virtual memory has been created in prelog and
 	 * epilog.
 	 */
-	movl	$1f, %edx
-	subl	$__PAGE_OFFSET, %edx
-	jmp	*%edx
+	movl	$(__KERNEXEC_EFI_DS), %edx
+	mov	%edx, %ds
+	mov	%edx, %es
+	mov	%edx, %ss
+	ljmp $(__KERNEXEC_EFI_CS),$1f-__PAGE_OFFSET
 1:
 
 	/*
@@ -47,14 +51,8 @@ ENTRY(efi_call_phys)
 	 * parameter 2, ..., param n. To make things easy, we save the return
 	 * address of efi_call_phys in a global variable.
 	 */
-	popl	%edx
-	movl	%edx, saved_return_addr
-	/* get the function pointer into ECX*/
-	popl	%ecx
-	movl	%ecx, efi_rt_function_ptr
-	movl	$2f, %edx
-	subl	$__PAGE_OFFSET, %edx
-	pushl	%edx
+	popl	(saved_return_addr)
+	popl	(efi_rt_function_ptr)
 
 	/*
 	 * 3. Clear PG bit in %CR0.
@@ -73,9 +71,8 @@ ENTRY(efi_call_phys)
 	/*
 	 * 5. Call the physical function.
 	 */
-	jmp	*%ecx
+	call	*(efi_rt_function_ptr-__PAGE_OFFSET)
 
-2:
 	/*
 	 * 6. After EFI runtime service returns, control will return to
 	 * following instruction. We'd better readjust stack pointer first.
@@ -88,35 +85,32 @@ ENTRY(efi_call_phys)
 	movl	%cr0, %edx
 	orl	$0x80000000, %edx
 	movl	%edx, %cr0
-	jmp	1f
-1:
+
 	/*
 	 * 8. Now restore the virtual mode from flat mode by
 	 * adding EIP with PAGE_OFFSET.
 	 */
-	movl	$1f, %edx
-	jmp	*%edx
+	ljmp $(__KERNEL_CS),$1f+__PAGE_OFFSET
 1:
+	movl	$(__KERNEL_DS), %edx
+	mov	%edx, %ds
+	mov	%edx, %es
+	mov	%edx, %ss
 
 	/*
 	 * 9. Balance the stack. And because EAX contain the return value,
 	 * we'd better not clobber it.
 	 */
-	leal	efi_rt_function_ptr, %edx
-	movl	(%edx), %ecx
-	pushl	%ecx
+	pushl	(efi_rt_function_ptr)
 
 	/*
-	 * 10. Push the saved return address onto the stack and return.
+	 * 10. Return to the saved return address.
 	 */
-	leal	saved_return_addr, %edx
-	movl	(%edx), %ecx
-	pushl	%ecx
-	ret
+	jmpl	*(saved_return_addr)
 ENDPROC(efi_call_phys)
 .previous
 
-.data
+__INITDATA
 saved_return_addr:
 	.long 0
 efi_rt_function_ptr:
diff -NurpP --minimal linux-3.2.22/arch/x86/platform/efi/efi_stub_64.S linux-3.2.22-g-v/arch/x86/platform/efi/efi_stub_64.S
--- linux-3.2.22/arch/x86/platform/efi/efi_stub_64.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/platform/efi/efi_stub_64.S	2012-07-11 20:20:37.140783580 +0200
@@ -7,6 +7,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 #define SAVE_XMM			\
 	mov %rsp, %rax;			\
@@ -40,6 +41,7 @@ ENTRY(efi_call0)
 	call *%rdi
 	addq $32, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call0)
 
@@ -50,6 +52,7 @@ ENTRY(efi_call1)
 	call *%rdi
 	addq $32, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call1)
 
@@ -60,6 +63,7 @@ ENTRY(efi_call2)
 	call *%rdi
 	addq $32, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call2)
 
@@ -71,6 +75,7 @@ ENTRY(efi_call3)
 	call *%rdi
 	addq $32, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call3)
 
@@ -83,6 +88,7 @@ ENTRY(efi_call4)
 	call *%rdi
 	addq $32, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call4)
 
@@ -96,6 +102,7 @@ ENTRY(efi_call5)
 	call *%rdi
 	addq $48, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call5)
 
@@ -112,5 +119,6 @@ ENTRY(efi_call6)
 	call *%rdi
 	addq $48, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call6)
diff -NurpP --minimal linux-3.2.22/arch/x86/platform/mrst/mrst.c linux-3.2.22-g-v/arch/x86/platform/mrst/mrst.c
--- linux-3.2.22/arch/x86/platform/mrst/mrst.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/platform/mrst/mrst.c	2012-07-11 20:20:37.140783580 +0200
@@ -76,18 +76,20 @@ struct sfi_rtc_table_entry sfi_mrtc_arra
 EXPORT_SYMBOL_GPL(sfi_mrtc_array);
 int sfi_mrtc_num;
 
-static void mrst_power_off(void)
+static __noreturn void mrst_power_off(void)
 {
 	if (__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT)
 		intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 1);
+	BUG();
 }
 
-static void mrst_reboot(void)
+static __noreturn void mrst_reboot(void)
 {
 	if (__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT)
 		intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 0);
 	else
 		intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0);
+	BUG();
 }
 
 /* parse all the mtimer info to a static mtimer array */
diff -NurpP --minimal linux-3.2.22/arch/x86/power/cpu.c linux-3.2.22-g-v/arch/x86/power/cpu.c
--- linux-3.2.22/arch/x86/power/cpu.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/power/cpu.c	2012-07-11 20:20:37.144117339 +0200
@@ -131,7 +131,7 @@ static void do_fpu_end(void)
 static void fix_processor_context(void)
 {
 	int cpu = smp_processor_id();
-	struct tss_struct *t = &per_cpu(init_tss, cpu);
+	struct tss_struct *t = init_tss + cpu;
 
 	set_tss_desc(cpu, t);	/*
 				 * This just modifies memory; should not be
@@ -141,7 +141,9 @@ static void fix_processor_context(void)
 				 */
 
 #ifdef CONFIG_X86_64
+	pax_open_kernel();
 	get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9;
+	pax_close_kernel();
 
 	syscall_init();				/* This sets MSR_*STAR and related */
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/tools/relocs.c linux-3.2.22-g-v/arch/x86/tools/relocs.c
--- linux-3.2.22/arch/x86/tools/relocs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/tools/relocs.c	2012-07-11 20:20:37.144117339 +0200
@@ -11,10 +11,13 @@
 #include <endian.h>
 #include <regex.h>
 
+#include "../../../include/generated/autoconf.h"
+
 static void die(char *fmt, ...);
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 static Elf32_Ehdr ehdr;
+static Elf32_Phdr *phdr;
 static unsigned long reloc_count, reloc_idx;
 static unsigned long *relocs;
 static unsigned long reloc16_count, reloc16_idx;
@@ -322,9 +325,39 @@ static void read_ehdr(FILE *fp)
 	}
 }
 
+static void read_phdrs(FILE *fp)
+{
+	unsigned int i;
+
+	phdr = calloc(ehdr.e_phnum, sizeof(Elf32_Phdr));
+	if (!phdr) {
+		die("Unable to allocate %d program headers\n",
+		    ehdr.e_phnum);
+	}
+	if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) {
+		die("Seek to %d failed: %s\n",
+			ehdr.e_phoff, strerror(errno));
+	}
+	if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) {
+		die("Cannot read ELF program headers: %s\n",
+			strerror(errno));
+	}
+	for(i = 0; i < ehdr.e_phnum; i++) {
+		phdr[i].p_type      = elf32_to_cpu(phdr[i].p_type);
+		phdr[i].p_offset    = elf32_to_cpu(phdr[i].p_offset);
+		phdr[i].p_vaddr     = elf32_to_cpu(phdr[i].p_vaddr);
+		phdr[i].p_paddr     = elf32_to_cpu(phdr[i].p_paddr);
+		phdr[i].p_filesz    = elf32_to_cpu(phdr[i].p_filesz);
+		phdr[i].p_memsz     = elf32_to_cpu(phdr[i].p_memsz);
+		phdr[i].p_flags     = elf32_to_cpu(phdr[i].p_flags);
+		phdr[i].p_align     = elf32_to_cpu(phdr[i].p_align);
+	}
+
+}
+
 static void read_shdrs(FILE *fp)
 {
-	int i;
+	unsigned int i;
 	Elf32_Shdr shdr;
 
 	secs = calloc(ehdr.e_shnum, sizeof(struct section));
@@ -359,7 +392,7 @@ static void read_shdrs(FILE *fp)
 
 static void read_strtabs(FILE *fp)
 {
-	int i;
+	unsigned int i;
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_STRTAB) {
@@ -384,7 +417,7 @@ static void read_strtabs(FILE *fp)
 
 static void read_symtabs(FILE *fp)
 {
-	int i,j;
+	unsigned int i,j;
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_SYMTAB) {
@@ -417,7 +450,9 @@ static void read_symtabs(FILE *fp)
 
 static void read_relocs(FILE *fp)
 {
-	int i,j;
+	unsigned int i,j;
+	uint32_t base;
+
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_REL) {
@@ -437,9 +472,22 @@ static void read_relocs(FILE *fp)
 			die("Cannot read symbol table: %s\n",
 				strerror(errno));
 		}
+		base = 0;
+
+#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32)
+		for (j = 0; j < ehdr.e_phnum; j++) {
+			if (phdr[j].p_type != PT_LOAD )
+				continue;
+			if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz)
+				continue;
+			base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr;
+			break;
+		}
+#endif
+
 		for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
 			Elf32_Rel *rel = &sec->reltab[j];
-			rel->r_offset = elf32_to_cpu(rel->r_offset);
+			rel->r_offset = elf32_to_cpu(rel->r_offset) + base;
 			rel->r_info   = elf32_to_cpu(rel->r_info);
 		}
 	}
@@ -448,13 +496,13 @@ static void read_relocs(FILE *fp)
 
 static void print_absolute_symbols(void)
 {
-	int i;
+	unsigned int i;
 	printf("Absolute symbols\n");
 	printf(" Num:    Value Size  Type       Bind        Visibility  Name\n");
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		char *sym_strtab;
-		int j;
+		unsigned int j;
 
 		if (sec->shdr.sh_type != SHT_SYMTAB) {
 			continue;
@@ -481,14 +529,14 @@ static void print_absolute_symbols(void)
 
 static void print_absolute_relocs(void)
 {
-	int i, printed = 0;
+	unsigned int i, printed = 0;
 
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		struct section *sec_applies, *sec_symtab;
 		char *sym_strtab;
 		Elf32_Sym *sh_symtab;
-		int j;
+		unsigned int j;
 		if (sec->shdr.sh_type != SHT_REL) {
 			continue;
 		}
@@ -550,13 +598,13 @@ static void print_absolute_relocs(void)
 static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym),
 			int use_real_mode)
 {
-	int i;
+	unsigned int i;
 	/* Walk through the relocations */
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		char *sym_strtab;
 		Elf32_Sym *sh_symtab;
 		struct section *sec_applies, *sec_symtab;
-		int j;
+		unsigned int j;
 		struct section *sec = &secs[i];
 
 		if (sec->shdr.sh_type != SHT_REL) {
@@ -580,6 +628,22 @@ static void walk_relocs(void (*visit)(El
 			sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
 			r_type = ELF32_R_TYPE(rel->r_info);
 
+			/* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */
+			if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load"))
+				continue;
+
+#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32)
+			/* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */
+			if (!strcmp(sec_name(sym->st_shndx), ".module.text") && !strcmp(sym_name(sym_strtab, sym), "_etext"))
+				continue;
+			if (!strcmp(sec_name(sym->st_shndx), ".init.text"))
+				continue;
+			if (!strcmp(sec_name(sym->st_shndx), ".exit.text"))
+				continue;
+			if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR"))
+				continue;
+#endif
+
 			shn_abs = sym->st_shndx == SHN_ABS;
 
 			switch (r_type) {
@@ -676,7 +740,7 @@ static int write32(unsigned int v, FILE 
 
 static void emit_relocs(int as_text, int use_real_mode)
 {
-	int i;
+	unsigned int i;
 	/* Count how many relocations I have and allocate space for them. */
 	reloc_count = 0;
 	walk_relocs(count_reloc, use_real_mode);
@@ -803,6 +867,7 @@ int main(int argc, char **argv)
 			fname, strerror(errno));
 	}
 	read_ehdr(fp);
+	read_phdrs(fp);
 	read_shdrs(fp);
 	read_strtabs(fp);
 	read_symtabs(fp);
diff -NurpP --minimal linux-3.2.22/arch/x86/vdso/Makefile linux-3.2.22-g-v/arch/x86/vdso/Makefile
--- linux-3.2.22/arch/x86/vdso/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/vdso/Makefile	2012-07-11 20:20:37.144117339 +0200
@@ -137,7 +137,7 @@ quiet_cmd_vdso = VDSO    $@
 		       -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
 		 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
 
-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
+VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
 GCOV_PROFILE := n
 
 #
diff -NurpP --minimal linux-3.2.22/arch/x86/vdso/vdso32-setup.c linux-3.2.22-g-v/arch/x86/vdso/vdso32-setup.c
--- linux-3.2.22/arch/x86/vdso/vdso32-setup.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/vdso/vdso32-setup.c	2012-07-11 20:20:37.144117339 +0200
@@ -25,6 +25,7 @@
 #include <asm/tlbflush.h>
 #include <asm/vdso.h>
 #include <asm/proto.h>
+#include <asm/mman.h>
 
 enum {
 	VDSO_DISABLED = 0,
@@ -226,7 +227,7 @@ static inline void map_compat_vdso(int m
 void enable_sep_cpu(void)
 {
 	int cpu = get_cpu();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 
 	if (!boot_cpu_has(X86_FEATURE_SEP)) {
 		put_cpu();
@@ -249,7 +250,7 @@ static int __init gate_vma_init(void)
 	gate_vma.vm_start = FIXADDR_USER_START;
 	gate_vma.vm_end = FIXADDR_USER_END;
 	gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
-	gate_vma.vm_page_prot = __P101;
+	gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
 	/*
 	 * Make sure the vDSO gets into every core dump.
 	 * Dumping its contents makes post-mortem fully interpretable later
@@ -331,14 +332,14 @@ int arch_setup_additional_pages(struct l
 	if (compat)
 		addr = VDSO_HIGH_BASE;
 	else {
-		addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
+		addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, MAP_EXECUTABLE);
 		if (IS_ERR_VALUE(addr)) {
 			ret = addr;
 			goto up_fail;
 		}
 	}
 
-	current->mm->context.vdso = (void *)addr;
+	current->mm->context.vdso = addr;
 
 	if (compat_uses_vma || !compat) {
 		/*
@@ -361,11 +362,11 @@ int arch_setup_additional_pages(struct l
 	}
 
 	current_thread_info()->sysenter_return =
-		VDSO32_SYMBOL(addr, SYSENTER_RETURN);
+		(__force void __user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN);
 
   up_fail:
 	if (ret)
-		current->mm->context.vdso = NULL;
+		current->mm->context.vdso = 0;
 
 	up_write(&mm->mmap_sem);
 
@@ -412,8 +413,14 @@ __initcall(ia32_binfmt_init);
 
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
-	if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
+	if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso)
 		return "[vdso]";
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso)
+		return "[vdso]";
+#endif
+
 	return NULL;
 }
 
@@ -423,7 +430,7 @@ struct vm_area_struct *get_gate_vma(stru
 	 * Check to see if the corresponding task was created in compat vdso
 	 * mode.
 	 */
-	if (mm && mm->context.vdso == (void *)VDSO_HIGH_BASE)
+	if (mm && mm->context.vdso == VDSO_HIGH_BASE)
 		return &gate_vma;
 	return NULL;
 }
diff -NurpP --minimal linux-3.2.22/arch/x86/vdso/vma.c linux-3.2.22-g-v/arch/x86/vdso/vma.c
--- linux-3.2.22/arch/x86/vdso/vma.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/vdso/vma.c	2012-07-11 20:20:37.144117339 +0200
@@ -16,8 +16,6 @@
 #include <asm/vdso.h>
 #include <asm/page.h>
 
-unsigned int __read_mostly vdso_enabled = 1;
-
 extern char vdso_start[], vdso_end[];
 extern unsigned short vdso_sync_cpuid;
 
@@ -96,7 +94,6 @@ static unsigned long vdso_addr(unsigned 
 	 * unaligned here as a result of stack start randomization.
 	 */
 	addr = PAGE_ALIGN(addr);
-	addr = align_addr(addr, NULL, ALIGN_VDSO);
 
 	return addr;
 }
@@ -106,40 +103,35 @@ static unsigned long vdso_addr(unsigned 
 int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 {
 	struct mm_struct *mm = current->mm;
-	unsigned long addr;
+	unsigned long addr = 0;
 	int ret;
 
-	if (!vdso_enabled)
-		return 0;
-
 	down_write(&mm->mmap_sem);
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	addr = vdso_addr(mm->start_stack, vdso_size);
+	addr = align_addr(addr, NULL, ALIGN_VDSO);
 	addr = get_unmapped_area(NULL, addr, vdso_size, 0, 0);
 	if (IS_ERR_VALUE(addr)) {
 		ret = addr;
 		goto up_fail;
 	}
 
-	current->mm->context.vdso = (void *)addr;
+	mm->context.vdso = addr;
 
 	ret = install_special_mapping(mm, addr, vdso_size,
 				      VM_READ|VM_EXEC|
 				      VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
 				      VM_ALWAYSDUMP,
 				      vdso_pages);
-	if (ret) {
-		current->mm->context.vdso = NULL;
-		goto up_fail;
-	}
+
+	if (ret)
+		mm->context.vdso = 0;
 
 up_fail:
 	up_write(&mm->mmap_sem);
 	return ret;
 }
-
-static __init int vdso_setup(char *s)
-{
-	vdso_enabled = simple_strtoul(s, NULL, 0);
-	return 0;
-}
-__setup("vdso=", vdso_setup);
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/enlighten.c linux-3.2.22-g-v/arch/x86/xen/enlighten.c
--- linux-3.2.22/arch/x86/xen/enlighten.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/enlighten.c	2012-07-11 20:20:37.147450331 +0200
@@ -86,8 +86,6 @@ EXPORT_SYMBOL_GPL(xen_start_info);
 
 struct shared_info xen_dummy_shared_info;
 
-void *xen_initial_gdt;
-
 RESERVE_BRK(shared_info_page_brk, PAGE_SIZE);
 __read_mostly int xen_have_vector_callback;
 EXPORT_SYMBOL_GPL(xen_have_vector_callback);
@@ -1041,7 +1039,7 @@ static const struct pv_apic_ops xen_apic
 #endif
 };
 
-static void xen_reboot(int reason)
+static __noreturn void xen_reboot(int reason)
 {
 	struct sched_shutdown r = { .reason = reason };
 
@@ -1049,17 +1047,17 @@ static void xen_reboot(int reason)
 		BUG();
 }
 
-static void xen_restart(char *msg)
+static __noreturn void xen_restart(char *msg)
 {
 	xen_reboot(SHUTDOWN_reboot);
 }
 
-static void xen_emergency_restart(void)
+static __noreturn void xen_emergency_restart(void)
 {
 	xen_reboot(SHUTDOWN_reboot);
 }
 
-static void xen_machine_halt(void)
+static __noreturn void xen_machine_halt(void)
 {
 	xen_reboot(SHUTDOWN_poweroff);
 }
@@ -1165,7 +1163,17 @@ asmlinkage void __init xen_start_kernel(
 	__userpte_alloc_gfp &= ~__GFP_HIGHMEM;
 
 	/* Work out if we support NX */
-	x86_configure_nx();
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
+	if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 &&
+	    (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) {
+		unsigned l, h;
+
+		__supported_pte_mask |= _PAGE_NX;
+		rdmsr(MSR_EFER, l, h);
+		l |= EFER_NX;
+		wrmsr(MSR_EFER, l, h);
+	}
+#endif
 
 	xen_setup_features();
 
@@ -1196,13 +1204,6 @@ asmlinkage void __init xen_start_kernel(
 
 	machine_ops = xen_machine_ops;
 
-	/*
-	 * The only reliable way to retain the initial address of the
-	 * percpu gdt_page is to remember it here, so we can go and
-	 * mark it RW later, when the initial percpu area is freed.
-	 */
-	xen_initial_gdt = &per_cpu(gdt_page, 0);
-
 	xen_smp_init();
 
 #ifdef CONFIG_ACPI_NUMA
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/mmu.c linux-3.2.22-g-v/arch/x86/xen/mmu.c
--- linux-3.2.22/arch/x86/xen/mmu.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/mmu.c	2012-07-11 20:20:37.147450331 +0200
@@ -1738,6 +1738,9 @@ pgd_t * __init xen_setup_kernel_pagetabl
 	convert_pfn_mfn(init_level4_pgt);
 	convert_pfn_mfn(level3_ident_pgt);
 	convert_pfn_mfn(level3_kernel_pgt);
+	convert_pfn_mfn(level3_vmalloc_start_pgt);
+	convert_pfn_mfn(level3_vmalloc_end_pgt);
+	convert_pfn_mfn(level3_vmemmap_pgt);
 
 	l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd);
 	l2 = m2v(l3[pud_index(__START_KERNEL_map)].pud);
@@ -1756,7 +1759,11 @@ pgd_t * __init xen_setup_kernel_pagetabl
 	set_page_prot(init_level4_pgt, PAGE_KERNEL_RO);
 	set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO);
 	set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO);
+	set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO);
+	set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO);
+	set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO);
 	set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO);
+	set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO);
 	set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
 	set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO);
 
@@ -1967,6 +1974,7 @@ static void __init xen_post_allocator_in
 	pv_mmu_ops.set_pud = xen_set_pud;
 #if PAGETABLE_LEVELS == 4
 	pv_mmu_ops.set_pgd = xen_set_pgd;
+	pv_mmu_ops.set_pgd_batched = xen_set_pgd;
 #endif
 
 	/* This will work as long as patching hasn't happened yet
@@ -2048,6 +2056,7 @@ static const struct pv_mmu_ops xen_mmu_o
 	.pud_val = PV_CALLEE_SAVE(xen_pud_val),
 	.make_pud = PV_CALLEE_SAVE(xen_make_pud),
 	.set_pgd = xen_set_pgd_hyper,
+	.set_pgd_batched = xen_set_pgd_hyper,
 
 	.alloc_pud = xen_alloc_pmd_init,
 	.release_pud = xen_release_pmd_init,
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/smp.c linux-3.2.22-g-v/arch/x86/xen/smp.c
--- linux-3.2.22/arch/x86/xen/smp.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/smp.c	2012-07-11 20:20:37.150639393 +0200
@@ -209,11 +209,6 @@ static void __init xen_smp_prepare_boot_
 {
 	BUG_ON(smp_processor_id() != 0);
 	native_smp_prepare_boot_cpu();
-
-	/* We've switched to the "real" per-cpu gdt, so make sure the
-	   old memory can be recycled */
-	make_lowmem_page_readwrite(xen_initial_gdt);
-
 	xen_filter_cpu_maps();
 	xen_setup_vcpu_info_placement();
 }
@@ -290,12 +285,12 @@ cpu_initialize_context(unsigned int cpu,
 	gdt = get_cpu_gdt_table(cpu);
 
 	ctxt->flags = VGCF_IN_KERNEL;
-	ctxt->user_regs.ds = __USER_DS;
-	ctxt->user_regs.es = __USER_DS;
+	ctxt->user_regs.ds = __KERNEL_DS;
+	ctxt->user_regs.es = __KERNEL_DS;
 	ctxt->user_regs.ss = __KERNEL_DS;
 #ifdef CONFIG_X86_32
 	ctxt->user_regs.fs = __KERNEL_PERCPU;
-	ctxt->user_regs.gs = __KERNEL_STACK_CANARY;
+	savesegment(gs, ctxt->user_regs.gs);
 #else
 	ctxt->gs_base_kernel = per_cpu_offset(cpu);
 #endif
@@ -346,13 +341,12 @@ static int __cpuinit xen_cpu_up(unsigned
 	int rc;
 
 	per_cpu(current_task, cpu) = idle;
+	per_cpu(current_tinfo, cpu) = &idle->tinfo;
 #ifdef CONFIG_X86_32
 	irq_ctx_init(cpu);
 #else
 	clear_tsk_thread_flag(idle, TIF_FORK);
-	per_cpu(kernel_stack, cpu) =
-		(unsigned long)task_stack_page(idle) -
-		KERNEL_STACK_OFFSET + THREAD_SIZE;
+	per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE;
 #endif
 	xen_setup_runstate_info(cpu);
 	xen_setup_timer(cpu);
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/xen-asm_32.S linux-3.2.22-g-v/arch/x86/xen/xen-asm_32.S
--- linux-3.2.22/arch/x86/xen/xen-asm_32.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/xen-asm_32.S	2012-07-11 20:20:37.150639393 +0200
@@ -83,14 +83,14 @@ ENTRY(xen_iret)
 	ESP_OFFSET=4	# bytes pushed onto stack
 
 	/*
-	 * Store vcpu_info pointer for easy access.  Do it this way to
-	 * avoid having to reload %fs
+	 * Store vcpu_info pointer for easy access.
 	 */
 #ifdef CONFIG_SMP
-	GET_THREAD_INFO(%eax)
-	movl TI_cpu(%eax), %eax
-	movl __per_cpu_offset(,%eax,4), %eax
-	mov xen_vcpu(%eax), %eax
+	push %fs
+	mov $(__KERNEL_PERCPU), %eax
+	mov %eax, %fs
+	mov PER_CPU_VAR(xen_vcpu), %eax
+	pop %fs
 #else
 	movl xen_vcpu, %eax
 #endif
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/xen-head.S linux-3.2.22-g-v/arch/x86/xen/xen-head.S
--- linux-3.2.22/arch/x86/xen/xen-head.S	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/xen-head.S	2012-07-11 20:20:37.150639393 +0200
@@ -19,6 +19,17 @@ ENTRY(startup_xen)
 #ifdef CONFIG_X86_32
 	mov %esi,xen_start_info
 	mov $init_thread_union+THREAD_SIZE,%esp
+#ifdef CONFIG_SMP
+	movl $cpu_gdt_table,%edi
+	movl $__per_cpu_load,%eax
+	movw %ax,__KERNEL_PERCPU + 2(%edi)
+	rorl $16,%eax
+	movb %al,__KERNEL_PERCPU + 4(%edi)
+	movb %ah,__KERNEL_PERCPU + 7(%edi)
+	movl $__per_cpu_end - 1,%eax
+	subl $__per_cpu_start,%eax
+	movw %ax,__KERNEL_PERCPU + 0(%edi)
+#endif
 #else
 	mov %rsi,xen_start_info
 	mov $init_thread_union+THREAD_SIZE,%rsp
diff -NurpP --minimal linux-3.2.22/arch/x86/xen/xen-ops.h linux-3.2.22-g-v/arch/x86/xen/xen-ops.h
--- linux-3.2.22/arch/x86/xen/xen-ops.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/x86/xen/xen-ops.h	2012-07-11 20:20:37.150639393 +0200
@@ -10,8 +10,6 @@
 extern const char xen_hypervisor_callback[];
 extern const char xen_failsafe_callback[];
 
-extern void *xen_initial_gdt;
-
 struct trap_info;
 void xen_copy_trap_info(struct trap_info *traps);
 
diff -NurpP --minimal linux-3.2.22/arch/xtensa/variants/dc232b/include/variant/core.h linux-3.2.22-g-v/arch/xtensa/variants/dc232b/include/variant/core.h
--- linux-3.2.22/arch/xtensa/variants/dc232b/include/variant/core.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/xtensa/variants/dc232b/include/variant/core.h	2012-07-11 20:20:37.150639393 +0200
@@ -119,9 +119,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		32	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		32	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		5	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		5	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH)	/* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		16384	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		16384	/* D-cache size in bytes or 0 */
diff -NurpP --minimal linux-3.2.22/arch/xtensa/variants/fsf/include/variant/core.h linux-3.2.22-g-v/arch/xtensa/variants/fsf/include/variant/core.h
--- linux-3.2.22/arch/xtensa/variants/fsf/include/variant/core.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/xtensa/variants/fsf/include/variant/core.h	2012-07-11 20:20:37.150639393 +0200
@@ -11,6 +11,7 @@
 #ifndef _XTENSA_CORE_H
 #define _XTENSA_CORE_H
 
+#include <linux/const.h>
 
 /****************************************************************************
 	    Parameters Useful for Any Code, USER or PRIVILEGED
@@ -112,9 +113,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		16	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		16	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		4	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		4	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		8192	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		8192	/* D-cache size in bytes or 0 */
diff -NurpP --minimal linux-3.2.22/arch/xtensa/variants/s6000/include/variant/core.h linux-3.2.22-g-v/arch/xtensa/variants/s6000/include/variant/core.h
--- linux-3.2.22/arch/xtensa/variants/s6000/include/variant/core.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/arch/xtensa/variants/s6000/include/variant/core.h	2012-07-11 20:20:37.153972054 +0200
@@ -11,6 +11,7 @@
 #ifndef _XTENSA_CORE_CONFIGURATION_H
 #define _XTENSA_CORE_CONFIGURATION_H
 
+#include <linux/const.h>
 
 /****************************************************************************
 	    Parameters Useful for Any Code, USER or PRIVILEGED
@@ -118,9 +119,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		16	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		16	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		4	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		4	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH)	/* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		32768	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		32768	/* D-cache size in bytes or 0 */
diff -NurpP --minimal linux-3.2.22/block/blk-iopoll.c linux-3.2.22-g-v/block/blk-iopoll.c
--- linux-3.2.22/block/blk-iopoll.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/blk-iopoll.c	2012-07-11 20:20:37.153972054 +0200
@@ -77,7 +77,7 @@ void blk_iopoll_complete(struct blk_iopo
 }
 EXPORT_SYMBOL(blk_iopoll_complete);
 
-static void blk_iopoll_softirq(struct softirq_action *h)
+static void blk_iopoll_softirq(void)
 {
 	struct list_head *list = &__get_cpu_var(blk_cpu_iopoll);
 	int rearm = 0, budget = blk_iopoll_budget;
diff -NurpP --minimal linux-3.2.22/block/blk-map.c linux-3.2.22-g-v/block/blk-map.c
--- linux-3.2.22/block/blk-map.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/blk-map.c	2012-07-11 20:20:37.153972054 +0200
@@ -302,7 +302,7 @@ int blk_rq_map_kern(struct request_queue
 	if (!len || !kbuf)
 		return -EINVAL;
 
-	do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf);
+	do_copy = !blk_rq_aligned(q, addr, len) || object_starts_on_stack(kbuf);
 	if (do_copy)
 		bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading);
 	else
diff -NurpP --minimal linux-3.2.22/block/blk-softirq.c linux-3.2.22-g-v/block/blk-softirq.c
--- linux-3.2.22/block/blk-softirq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/blk-softirq.c	2012-07-11 20:20:37.153972054 +0200
@@ -17,7 +17,7 @@ static DEFINE_PER_CPU(struct list_head, 
  * Softirq action handler - move entries to local list and loop over them
  * while passing them to the queue registered handler.
  */
-static void blk_done_softirq(struct softirq_action *h)
+static void blk_done_softirq(void)
 {
 	struct list_head *cpu_list, local_list;
 
diff -NurpP --minimal linux-3.2.22/block/bsg.c linux-3.2.22-g-v/block/bsg.c
--- linux-3.2.22/block/bsg.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/bsg.c	2012-07-11 20:20:37.153972054 +0200
@@ -176,16 +176,24 @@ static int blk_fill_sgv4_hdr_rq(struct r
 				struct sg_io_v4 *hdr, struct bsg_device *bd,
 				fmode_t has_write_perm)
 {
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
+
 	if (hdr->request_len > BLK_MAX_CDB) {
 		rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
 		if (!rq->cmd)
 			return -ENOMEM;
-	}
+		cmdptr = rq->cmd;
+	} else
+		cmdptr = tmpcmd;
 
-	if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request,
+	if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request,
 			   hdr->request_len))
 		return -EFAULT;
 
+	if (cmdptr != rq->cmd)
+		memcpy(rq->cmd, cmdptr, hdr->request_len);
+
 	if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
 		if (blk_verify_command(rq->cmd, has_write_perm))
 			return -EPERM;
diff -NurpP --minimal linux-3.2.22/block/compat_ioctl.c linux-3.2.22-g-v/block/compat_ioctl.c
--- linux-3.2.22/block/compat_ioctl.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/compat_ioctl.c	2012-07-11 20:20:37.153972054 +0200
@@ -340,7 +340,7 @@ static int compat_fd_ioctl(struct block_
 		err |= __get_user(f->spec1, &uf->spec1);
 		err |= __get_user(f->fmt_gap, &uf->fmt_gap);
 		err |= __get_user(name, &uf->name);
-		f->name = compat_ptr(name);
+		f->name = (void __force_kernel *)compat_ptr(name);
 		if (err) {
 			err = -EFAULT;
 			goto out;
diff -NurpP --minimal linux-3.2.22/block/scsi_ioctl.c linux-3.2.22-g-v/block/scsi_ioctl.c
--- linux-3.2.22/block/scsi_ioctl.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/block/scsi_ioctl.c	2012-07-11 20:20:37.157307614 +0200
@@ -223,8 +223,20 @@ EXPORT_SYMBOL(blk_verify_command);
 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
 			     struct sg_io_hdr *hdr, fmode_t mode)
 {
-	if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
+
+	if (rq->cmd != rq->__cmd)
+		cmdptr = rq->cmd;
+	else
+		cmdptr = tmpcmd;
+
+	if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len))
 		return -EFAULT;
+
+	if (cmdptr != rq->cmd)
+		memcpy(rq->cmd, cmdptr, hdr->cmd_len);
+
 	if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
 		return -EPERM;
 
@@ -433,6 +445,8 @@ int sg_scsi_ioctl(struct request_queue *
 	int err;
 	unsigned int in_len, out_len, bytes, opcode, cmdlen;
 	char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
 
 	if (!sic)
 		return -EINVAL;
@@ -466,9 +480,18 @@ int sg_scsi_ioctl(struct request_queue *
 	 */
 	err = -EFAULT;
 	rq->cmd_len = cmdlen;
-	if (copy_from_user(rq->cmd, sic->data, cmdlen))
+
+	if (rq->cmd != rq->__cmd)
+		cmdptr = rq->cmd;
+	else
+		cmdptr = tmpcmd;
+
+	if (copy_from_user(cmdptr, sic->data, cmdlen))
 		goto error;
 
+	if (rq->cmd != cmdptr)
+		memcpy(rq->cmd, cmdptr, cmdlen);
+
 	if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
 		goto error;
 
diff -NurpP --minimal linux-3.2.22/crypto/cryptd.c linux-3.2.22-g-v/crypto/cryptd.c
--- linux-3.2.22/crypto/cryptd.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/crypto/cryptd.c	2012-07-11 20:20:37.157307614 +0200
@@ -63,7 +63,7 @@ struct cryptd_blkcipher_ctx {
 
 struct cryptd_blkcipher_request_ctx {
 	crypto_completion_t complete;
-};
+} __no_const;
 
 struct cryptd_hash_ctx {
 	struct crypto_shash *child;
@@ -80,7 +80,7 @@ struct cryptd_aead_ctx {
 
 struct cryptd_aead_request_ctx {
 	crypto_completion_t complete;
-};
+} __no_const;
 
 static void cryptd_queue_worker(struct work_struct *work);
 
diff -NurpP --minimal linux-3.2.22/Documentation/dontdiff linux-3.2.22-g-v/Documentation/dontdiff
--- linux-3.2.22/Documentation/dontdiff	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/Documentation/dontdiff	2012-07-11 20:31:05.763910630 +0200
@@ -81,6 +81,7 @@ aic7*seq.h*
 aicasm
 aicdb.h*
 altivec*.c
+ashldi3.S
 asm-offsets.h
 asm_offsets.h
 autoconf.h*
@@ -218,6 +219,7 @@ series
 setup
 setup.bin
 setup.elf
+size_overflow_hash.h
 sImage
 sm_tbl*
 split-include
diff -NurpP --minimal linux-3.2.22/Documentation/kernel-parameters.txt linux-3.2.22-g-v/Documentation/kernel-parameters.txt
--- linux-3.2.22/Documentation/kernel-parameters.txt	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/Documentation/kernel-parameters.txt	2012-07-11 20:20:31.027306567 +0200
@@ -1935,6 +1935,13 @@ bytes respectively. Such letter suffixes
 			the specified number of seconds.  This is to be used if
 			your oopses keep scrolling off the screen.
 
+	pax_nouderef	[X86] disables UDEREF.  Most likely needed under certain
+			virtualization environments that don't cope well with the
+			expand down segment used by UDEREF on X86-32 or the frequent
+			page table updates on X86-64.
+
+	pax_softmode=	0/1 to disable/enable PaX softmode on boot already.
+
 	pcbit=		[HW,ISDN]
 
 	pcd.		[PARIDE]
diff -NurpP --minimal linux-3.2.22/Documentation/vserver/debug.txt linux-3.2.22-g-v/Documentation/vserver/debug.txt
--- linux-3.2.22/Documentation/vserver/debug.txt	1970-01-01 01:00:00.000000000 +0100
+++ linux-3.2.22-g-v/Documentation/vserver/debug.txt	2012-07-11 20:20:45.291061218 +0200
@@ -0,0 +1,154 @@
+
+debug_cvirt:
+
+ 2   4	"vx_map_tgid: %p/%llx: %d -> %d"
+	"vx_rmap_tgid: %p/%llx: %d -> %d"
+
+debug_dlim:
+
+ 0   1	"ALLOC (%p,#%d)%c inode (%d)"
+	"FREE  (%p,#%d)%c inode"
+ 1   2	"ALLOC (%p,#%d)%c %lld bytes (%d)"
+	"FREE  (%p,#%d)%c %lld bytes"
+ 2   4	"ADJUST: %lld,%lld on %ld,%ld [mult=%d]"
+ 3   8	"ext3_has_free_blocks(%p): %lu<%lu+1, %c, %u!=%u r=%d"
+	"ext3_has_free_blocks(%p): free=%lu, root=%lu"
+	"rcu_free_dl_info(%p)"
+ 4  10	"alloc_dl_info(%p,%d) = %p"
+	"dealloc_dl_info(%p)"
+	"get_dl_info(%p[#%d.%d])"
+	"put_dl_info(%p[#%d.%d])"
+ 5  20	"alloc_dl_info(%p,%d)*"
+ 6  40	"__hash_dl_info: %p[#%d]"
+	"__unhash_dl_info: %p[#%d]"
+ 7  80	"locate_dl_info(%p,#%d) = %p"
+
+debug_misc:
+
+ 0   1	"destroy_dqhash: %p [#0x%08x] c=%d"
+	"new_dqhash: %p [#0x%08x]"
+	"vroot[%d]_clr_dev: dev=%p[%lu,%d:%d]"
+	"vroot[%d]_get_real_bdev: dev=%p[%lu,%d:%d]"
+	"vroot[%d]_set_dev: dev=%p[%lu,%d:%d]"
+	"vroot_get_real_bdev not set"
+ 1   2	"cow_break_link(»%s«)"
+	"temp copy »%s«"
+ 2   4	"dentry_open(new): %p"
+	"dentry_open(old): %p"
+	"lookup_create(new): %p"
+	"old path »%s«"
+	"path_lookup(old): %d"
+	"vfs_create(new): %d"
+	"vfs_rename: %d"
+	"vfs_sendfile: %d"
+ 3   8	"fput(new_file=%p[#%d])"
+	"fput(old_file=%p[#%d])"
+ 4  10	"vx_info_kill(%p[#%d],%d,%d) = %d"
+	"vx_info_kill(%p[#%d],%d,%d)*"
+ 5  20	"vs_reboot(%p[#%d],%d)"
+ 6  40	"dropping task %p[#%u,%u] for %p[#%u,%u]"
+
+debug_net:
+
+ 2   4	"nx_addr_conflict(%p,%p) %d.%d,%d.%d"
+ 3   8	"inet_bind(%p) %d.%d.%d.%d, %d.%d.%d.%d, %d.%d.%d.%d"
+	"inet_bind(%p)* %p,%p;%lx %d.%d.%d.%d"
+ 4  10	"ip_route_connect(%p) %p,%p;%lx"
+ 5  20	"__addr_in_socket(%p,%d.%d.%d.%d) %p:%d.%d.%d.%d %p;%lx"
+ 6  40	"sk,egf: %p [#%d] (from %d)"
+	"sk,egn: %p [#%d] (from %d)"
+	"sk,req: %p [#%d] (from %d)"
+	"sk: %p [#%d] (from %d)"
+	"tw: %p [#%d] (from %d)"
+ 7  80	"__sock_recvmsg: %p[%p,%p,%p;%d]:%d/%d"
+	"__sock_sendmsg: %p[%p,%p,%p;%d]:%d/%d"
+
+debug_nid:
+
+ 0   1	"__lookup_nx_info(#%u): %p[#%u]"
+	"alloc_nx_info(%d) = %p"
+	"create_nx_info(%d) (dynamic rejected)"
+	"create_nx_info(%d) = %p (already there)"
+	"create_nx_info(%d) = %p (new)"
+	"dealloc_nx_info(%p)"
+ 1   2	"alloc_nx_info(%d)*"
+	"create_nx_info(%d)*"
+ 2   4	"get_nx_info(%p[#%d.%d])"
+	"put_nx_info(%p[#%d.%d])"
+ 3   8	"claim_nx_info(%p[#%d.%d.%d]) %p"
+	"clr_nx_info(%p[#%d.%d])"
+	"init_nx_info(%p[#%d.%d])"
+	"release_nx_info(%p[#%d.%d.%d]) %p"
+	"set_nx_info(%p[#%d.%d])"
+ 4  10	"__hash_nx_info: %p[#%d]"
+	"__nx_dynamic_id: [#%d]"
+	"__unhash_nx_info: %p[#%d.%d.%d]"
+ 5  20	"moved task %p into nxi:%p[#%d]"
+	"nx_migrate_task(%p,%p[#%d.%d.%d])"
+	"task_get_nx_info(%p)"
+ 6  40	"nx_clear_persistent(%p[#%d])"
+
+debug_quota:
+
+ 0   1	"quota_sync_dqh(%p,%d) discard inode %p"
+ 1   2	"quota_sync_dqh(%p,%d)"
+	"sync_dquots(%p,%d)"
+	"sync_dquots_dqh(%p,%d)"
+ 3   8	"do_quotactl(%p,%d,cmd=%d,id=%d,%p)"
+
+debug_switch:
+
+ 0   1	"vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]"
+ 1   2	"vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]"
+ 4  10	"%s: (%s %s) returned %s with %d"
+
+debug_tag:
+
+ 7  80	"dx_parse_tag(»%s«): %d:#%d"
+	"dx_propagate_tag(%p[#%lu.%d]): %d,%d"
+
+debug_xid:
+
+ 0   1	"__lookup_vx_info(#%u): %p[#%u]"
+	"alloc_vx_info(%d) = %p"
+	"alloc_vx_info(%d)*"
+	"create_vx_info(%d) (dynamic rejected)"
+	"create_vx_info(%d) = %p (already there)"
+	"create_vx_info(%d) = %p (new)"
+	"dealloc_vx_info(%p)"
+	"loc_vx_info(%d) = %p (found)"
+	"loc_vx_info(%d) = %p (new)"
+	"loc_vx_info(%d) = %p (not available)"
+ 1   2	"create_vx_info(%d)*"
+	"loc_vx_info(%d)*"
+ 2   4	"get_vx_info(%p[#%d.%d])"
+	"put_vx_info(%p[#%d.%d])"
+ 3   8	"claim_vx_info(%p[#%d.%d.%d]) %p"
+	"clr_vx_info(%p[#%d.%d])"
+	"init_vx_info(%p[#%d.%d])"
+	"release_vx_info(%p[#%d.%d.%d]) %p"
+	"set_vx_info(%p[#%d.%d])"
+ 4  10	"__hash_vx_info: %p[#%d]"
+	"__unhash_vx_info: %p[#%d.%d.%d]"
+	"__vx_dynamic_id: [#%d]"
+ 5  20	"enter_vx_info(%p[#%d],%p) %p[#%d,%p]"
+	"leave_vx_info(%p[#%d,%p]) %p[#%d,%p]"
+	"moved task %p into vxi:%p[#%d]"
+	"task_get_vx_info(%p)"
+	"vx_migrate_task(%p,%p[#%d.%d])"
+ 6  40	"vx_clear_persistent(%p[#%d])"
+	"vx_exit_init(%p[#%d],%p[#%d,%d,%d])"
+	"vx_set_init(%p[#%d],%p[#%d,%d,%d])"
+	"vx_set_persistent(%p[#%d])"
+	"vx_set_reaper(%p[#%d],%p[#%d,%d])"
+ 7  80	"vx_child_reaper(%p[#%u,%u]) = %p[#%u,%u]"
+
+
+debug_limit:
+
+ n 2^n	"vx_acc_cres[%5d,%s,%2d]: %5d%s"
+	"vx_cres_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
+
+ m 2^m	"vx_acc_page[%5d,%s,%2d]: %5d%s"
+	"vx_acc_pages[%5d,%s,%2d]: %5d += %5d"
+	"vx_pages_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
diff -NurpP --minimal linux-3.2.22/drivers/acpi/apei/cper.c linux-3.2.22-g-v/drivers/acpi/apei/cper.c
--- linux-3.2.22/drivers/acpi/apei/cper.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/acpi/apei/cper.c	2012-07-11 20:20:37.157307614 +0200
@@ -38,12 +38,12 @@
  */
 u64 cper_next_record_id(void)
 {
-	static atomic64_t seq;
+	static atomic64_unchecked_t seq;
 
-	if (!atomic64_read(&seq))
-		atomic64_set(&seq, ((u64)get_seconds()) << 32);
+	if (!atomic64_read_unchecked(&seq))
+		atomic64_set_unchecked(&seq, ((u64)get_seconds()) << 32);
 
-	return atomic64_inc_return(&seq);
+	return atomic64_inc_return_unchecked(&seq);
 }
 EXPORT_SYMBOL_GPL(cper_next_record_id);
 
diff -NurpP --minimal linux-3.2.22/drivers/acpi/ec_sys.c linux-3.2.22-g-v/drivers/acpi/ec_sys.c
--- linux-3.2.22/drivers/acpi/ec_sys.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/acpi/ec_sys.c	2012-07-11 20:20:37.157307614 +0200
@@ -12,6 +12,7 @@
 #include <linux/acpi.h>
 #include <linux/debugfs.h>
 #include <linux/module.h>
+#include <linux/uaccess.h>
 #include "internal.h"
 
 MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
@@ -40,7 +41,7 @@ static ssize_t acpi_ec_read_io(struct fi
 	 * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
 	 */
 	unsigned int size = EC_SPACE_SIZE;
-	u8 *data = (u8 *) buf;
+	u8 data;
 	loff_t init_off = *off;
 	int err = 0;
 
@@ -53,9 +54,11 @@ static ssize_t acpi_ec_read_io(struct fi
 		size = count;
 
 	while (size) {
-		err = ec_read(*off, &data[*off - init_off]);
+		err = ec_read(*off, &data);
 		if (err)
 			return err;
+		if (put_user(data, &buf[*off - init_off]))
+			return -EFAULT;
 		*off += 1;
 		size--;
 	}
@@ -71,7 +74,6 @@ static ssize_t acpi_ec_write_io(struct f
 
 	unsigned int size = count;
 	loff_t init_off = *off;
-	u8 *data = (u8 *) buf;
 	int err = 0;
 
 	if (*off >= EC_SPACE_SIZE)
@@ -82,7 +84,9 @@ static ssize_t acpi_ec_write_io(struct f
 	}
 
 	while (size) {
-		u8 byte_write = data[*off - init_off];
+		u8 byte_write;
+		if (get_user(byte_write, &buf[*off - init_off]))
+			return -EFAULT;
 		err = ec_write(*off, byte_write);
 		if (err)
 			return err;
diff -NurpP --minimal linux-3.2.22/drivers/acpi/proc.c linux-3.2.22-g-v/drivers/acpi/proc.c
--- linux-3.2.22/drivers/acpi/proc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/acpi/proc.c	2012-07-11 20:20:37.157307614 +0200
@@ -343,19 +343,13 @@ acpi_system_write_wakeup_device(struct f
 				size_t count, loff_t * ppos)
 {
 	struct list_head *node, *next;
-	char strbuf[5];
-	char str[5] = "";
-	unsigned int len = count;
-
-	if (len > 4)
-		len = 4;
-	if (len < 0)
-		return -EFAULT;
+	char strbuf[5] = {0};
 
-	if (copy_from_user(strbuf, buffer, len))
+	if (count > 4)
+		count = 4;
+	if (copy_from_user(strbuf, buffer, count))
 		return -EFAULT;
-	strbuf[len] = '\0';
-	sscanf(strbuf, "%s", str);
+	strbuf[count] = '\0';
 
 	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
@@ -364,7 +358,7 @@ acpi_system_write_wakeup_device(struct f
 		if (!dev->wakeup.flags.valid)
 			continue;
 
-		if (!strncmp(dev->pnp.bus_id, str, 4)) {
+		if (!strncmp(dev->pnp.bus_id, strbuf, 4)) {
 			if (device_can_wakeup(&dev->dev)) {
 				bool enable = !device_may_wakeup(&dev->dev);
 				device_set_wakeup_enable(&dev->dev, enable);
diff -NurpP --minimal linux-3.2.22/drivers/acpi/processor_driver.c linux-3.2.22-g-v/drivers/acpi/processor_driver.c
--- linux-3.2.22/drivers/acpi/processor_driver.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/acpi/processor_driver.c	2012-07-11 20:20:37.160665377 +0200
@@ -473,7 +473,7 @@ static int __cpuinit acpi_processor_add(
 		return 0;
 #endif
 
-	BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
+	BUG_ON(pr->id >= nr_cpu_ids);
 
 	/*
 	 * Buggy BIOS check
diff -NurpP --minimal linux-3.2.22/drivers/ata/libata-core.c linux-3.2.22-g-v/drivers/ata/libata-core.c
--- linux-3.2.22/drivers/ata/libata-core.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ata/libata-core.c	2012-07-11 20:20:37.160665377 +0200
@@ -4733,7 +4733,7 @@ void ata_qc_free(struct ata_queued_cmd *
 	struct ata_port *ap;
 	unsigned int tag;
 
-	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+	BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 	ap = qc->ap;
 
 	qc->flags = 0;
@@ -4749,7 +4749,7 @@ void __ata_qc_complete(struct ata_queued
 	struct ata_port *ap;
 	struct ata_link *link;
 
-	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+	BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 	WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
 	ap = qc->ap;
 	link = qc->dev->link;
@@ -5754,6 +5754,7 @@ static void ata_finalize_port_ops(struct
 		return;
 
 	spin_lock(&lock);
+	pax_open_kernel();
 
 	for (cur = ops->inherits; cur; cur = cur->inherits) {
 		void **inherit = (void **)cur;
@@ -5767,8 +5768,9 @@ static void ata_finalize_port_ops(struct
 		if (IS_ERR(*pp))
 			*pp = NULL;
 
-	ops->inherits = NULL;
+	*(struct ata_port_operations **)&ops->inherits = NULL;
 
+	pax_close_kernel();
 	spin_unlock(&lock);
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/ata/pata_arasan_cf.c linux-3.2.22-g-v/drivers/ata/pata_arasan_cf.c
--- linux-3.2.22/drivers/ata/pata_arasan_cf.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ata/pata_arasan_cf.c	2012-07-11 20:20:37.163986579 +0200
@@ -862,7 +862,9 @@ static int __devinit arasan_cf_probe(str
 	/* Handle platform specific quirks */
 	if (pdata->quirk) {
 		if (pdata->quirk & CF_BROKEN_PIO) {
-			ap->ops->set_piomode = NULL;
+			pax_open_kernel();
+			*(void **)&ap->ops->set_piomode = NULL;
+			pax_close_kernel();
 			ap->pio_mask = 0;
 		}
 		if (pdata->quirk & CF_BROKEN_MWDMA)
diff -NurpP --minimal linux-3.2.22/drivers/atm/adummy.c linux-3.2.22-g-v/drivers/atm/adummy.c
--- linux-3.2.22/drivers/atm/adummy.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/adummy.c	2012-07-11 20:20:37.163986579 +0200
@@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct 
 		vcc->pop(vcc, skb);
 	else
 		dev_kfree_skb_any(skb);
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
diff -NurpP --minimal linux-3.2.22/drivers/atm/ambassador.c linux-3.2.22-g-v/drivers/atm/ambassador.c
--- linux-3.2.22/drivers/atm/ambassador.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/ambassador.c	2012-07-11 20:20:37.167310531 +0200
@@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, 
   PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx);
   
   // VC layer stats
-  atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+  atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
   
   // free the descriptor
   kfree (tx_descr);
@@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, 
 	  dump_skb ("<<<", vc, skb);
 	  
 	  // VC layer stats
-	  atomic_inc(&atm_vcc->stats->rx);
+	  atomic_inc_unchecked(&atm_vcc->stats->rx);
 	  __net_timestamp(skb);
 	  // end of our responsibility
 	  atm_vcc->push (atm_vcc, skb);
@@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, 
       } else {
       	PRINTK (KERN_INFO, "dropped over-size frame");
 	// should we count this?
-	atomic_inc(&atm_vcc->stats->rx_drop);
+	atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
       }
       
     } else {
@@ -1338,7 +1338,7 @@ static int amb_send (struct atm_vcc * at
   }
   
   if (check_area (skb->data, skb->len)) {
-    atomic_inc(&atm_vcc->stats->tx_err);
+    atomic_inc_unchecked(&atm_vcc->stats->tx_err);
     return -ENOMEM; // ?
   }
   
diff -NurpP --minimal linux-3.2.22/drivers/atm/atmtcp.c linux-3.2.22-g-v/drivers/atm/atmtcp.c
--- linux-3.2.22/drivers/atm/atmtcp.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/atmtcp.c	2012-07-11 20:20:37.167310531 +0200
@@ -207,7 +207,7 @@ static int atmtcp_v_send(struct atm_vcc 
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb(skb);
 		if (dev_data) return 0;
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOLINK;
 	}
 	size = skb->len+sizeof(struct atmtcp_hdr);
@@ -215,7 +215,7 @@ static int atmtcp_v_send(struct atm_vcc 
 	if (!new_skb) {
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOBUFS;
 	}
 	hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr));
@@ -226,8 +226,8 @@ static int atmtcp_v_send(struct atm_vcc 
 	if (vcc->pop) vcc->pop(vcc,skb);
 	else dev_kfree_skb(skb);
 	out_vcc->push(out_vcc,new_skb);
-	atomic_inc(&vcc->stats->tx);
-	atomic_inc(&out_vcc->stats->rx);
+	atomic_inc_unchecked(&vcc->stats->tx);
+	atomic_inc_unchecked(&out_vcc->stats->rx);
 	return 0;
 }
 
@@ -301,7 +301,7 @@ static int atmtcp_c_send(struct atm_vcc 
 	out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci));
 	read_unlock(&vcc_sklist_lock);
 	if (!out_vcc) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		goto done;
 	}
 	skb_pull(skb,sizeof(struct atmtcp_hdr));
@@ -313,8 +313,8 @@ static int atmtcp_c_send(struct atm_vcc 
 	__net_timestamp(new_skb);
 	skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len);
 	out_vcc->push(out_vcc,new_skb);
-	atomic_inc(&vcc->stats->tx);
-	atomic_inc(&out_vcc->stats->rx);
+	atomic_inc_unchecked(&vcc->stats->tx);
+	atomic_inc_unchecked(&out_vcc->stats->rx);
 done:
 	if (vcc->pop) vcc->pop(vcc,skb);
 	else dev_kfree_skb(skb);
diff -NurpP --minimal linux-3.2.22/drivers/atm/eni.c linux-3.2.22-g-v/drivers/atm/eni.c
--- linux-3.2.22/drivers/atm/eni.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/eni.c	2012-07-11 20:20:37.167310531 +0200
@@ -526,7 +526,7 @@ static int rx_aal0(struct atm_vcc *vcc)
 		DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n",
 		    vcc->dev->number);
 		length = 0;
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	}
 	else {
 		length = ATM_CELL_SIZE-1; /* no HEC */
@@ -581,7 +581,7 @@ static int rx_aal5(struct atm_vcc *vcc)
 			    size);
 		}
 		eff = length = 0;
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	}
 	else {
 		size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2);
@@ -598,7 +598,7 @@ static int rx_aal5(struct atm_vcc *vcc)
 			    "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n",
 			    vcc->dev->number,vcc->vci,length,size << 2,descr);
 			length = eff = 0;
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 		}
 	}
 	skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL;
@@ -771,7 +771,7 @@ rx_dequeued++;
 			vcc->push(vcc,skb);
 			pushed++;
 		}
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 	}
 	wake_up(&eni_dev->rx_wait);
 }
@@ -1229,7 +1229,7 @@ static void dequeue_tx(struct atm_dev *d
 		    PCI_DMA_TODEVICE);
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb_irq(skb);
-		atomic_inc(&vcc->stats->tx);
+		atomic_inc_unchecked(&vcc->stats->tx);
 		wake_up(&eni_dev->tx_wait);
 dma_complete++;
 	}
@@ -1569,7 +1569,7 @@ tx_complete++;
 /*--------------------------------- entries ---------------------------------*/
 
 
-static const char *media_name[] __devinitdata = {
+static const char *media_name[] __devinitconst = {
     "MMF", "SMF", "MMF", "03?", /*  0- 3 */
     "UTP", "05?", "06?", "07?", /*  4- 7 */
     "TAXI","09?", "10?", "11?", /*  8-11 */
diff -NurpP --minimal linux-3.2.22/drivers/atm/firestream.c linux-3.2.22-g-v/drivers/atm/firestream.c
--- linux-3.2.22/drivers/atm/firestream.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/firestream.c	2012-07-11 20:20:37.170642658 +0200
@@ -750,7 +750,7 @@ static void process_txdone_queue (struct
 				}
 			}
 
-			atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+			atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
 
 			fs_dprintk (FS_DEBUG_TXMEM, "i");
 			fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb);
@@ -817,7 +817,7 @@ static void process_incoming (struct fs_
 #endif
 				skb_put (skb, qe->p1 & 0xffff); 
 				ATM_SKB(skb)->vcc = atm_vcc;
-				atomic_inc(&atm_vcc->stats->rx);
+				atomic_inc_unchecked(&atm_vcc->stats->rx);
 				__net_timestamp(skb);
 				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb);
 				atm_vcc->push (atm_vcc, skb);
@@ -838,12 +838,12 @@ static void process_incoming (struct fs_
 				kfree (pe);
 			}
 			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
+				atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
 			break;
 		case 0x1f: /*  Reassembly abort: no buffers. */
 			/* Silently increment error counter. */
 			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
+				atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
 			break;
 		default: /* Hmm. Haven't written the code to handle the others yet... -- REW */
 			printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", 
diff -NurpP --minimal linux-3.2.22/drivers/atm/fore200e.c linux-3.2.22-g-v/drivers/atm/fore200e.c
--- linux-3.2.22/drivers/atm/fore200e.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/fore200e.c	2012-07-11 20:20:37.170642658 +0200
@@ -933,9 +933,9 @@ fore200e_tx_irq(struct fore200e* fore200
 #endif
 		/* check error condition */
 		if (*entry->status & STATUS_ERROR)
-		    atomic_inc(&vcc->stats->tx_err);
+		    atomic_inc_unchecked(&vcc->stats->tx_err);
 		else
-		    atomic_inc(&vcc->stats->tx);
+		    atomic_inc_unchecked(&vcc->stats->tx);
 	    }
 	}
 
@@ -1084,7 +1084,7 @@ fore200e_push_rpd(struct fore200e* fore2
     if (skb == NULL) {
 	DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
 
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return -ENOMEM;
     } 
 
@@ -1127,14 +1127,14 @@ fore200e_push_rpd(struct fore200e* fore2
 
 	dev_kfree_skb_any(skb);
 
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return -ENOMEM;
     }
 
     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
 
     vcc->push(vcc, skb);
-    atomic_inc(&vcc->stats->rx);
+    atomic_inc_unchecked(&vcc->stats->rx);
 
     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
 
@@ -1212,7 +1212,7 @@ fore200e_rx_irq(struct fore200e* fore200
 		DPRINTK(2, "damaged PDU on %d.%d.%d\n",
 			fore200e->atm_dev->number,
 			entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	    }
 	}
 
@@ -1657,7 +1657,7 @@ fore200e_send(struct atm_vcc *vcc, struc
 		goto retry_here;
 	    }
 
-	    atomic_inc(&vcc->stats->tx_err);
+	    atomic_inc_unchecked(&vcc->stats->tx_err);
 
 	    fore200e->tx_sat++;
 	    DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
diff -NurpP --minimal linux-3.2.22/drivers/atm/he.c linux-3.2.22-g-v/drivers/atm/he.c
--- linux-3.2.22/drivers/atm/he.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/he.c	2012-07-11 20:20:37.173973949 +0200
@@ -1709,7 +1709,7 @@ he_service_rbrq(struct he_dev *he_dev, i
 
 		if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
 			hprintk("HBUF_ERR!  (cid 0x%x)\n", cid);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			goto return_host_buffers;
 		}
 
@@ -1736,7 +1736,7 @@ he_service_rbrq(struct he_dev *he_dev, i
 				RBRQ_LEN_ERR(he_dev->rbrq_head)
 							? "LEN_ERR" : "",
 							vcc->vpi, vcc->vci);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto return_host_buffers;
 		}
 
@@ -1788,7 +1788,7 @@ he_service_rbrq(struct he_dev *he_dev, i
 		vcc->push(vcc, skb);
 		spin_lock(&he_dev->global_lock);
 
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 return_host_buffers:
 		++pdus_assembled;
@@ -2114,7 +2114,7 @@ __enqueue_tpd(struct he_dev *he_dev, str
 					tpd->vcc->pop(tpd->vcc, tpd->skb);
 				else
 					dev_kfree_skb_any(tpd->skb);
-				atomic_inc(&tpd->vcc->stats->tx_err);
+				atomic_inc_unchecked(&tpd->vcc->stats->tx_err);
 			}
 			pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
 			return;
@@ -2526,7 +2526,7 @@ he_send(struct atm_vcc *vcc, struct sk_b
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -EINVAL;
 	}
 
@@ -2537,7 +2537,7 @@ he_send(struct atm_vcc *vcc, struct sk_b
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -EINVAL;
 	}
 #endif
@@ -2549,7 +2549,7 @@ he_send(struct atm_vcc *vcc, struct sk_b
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		spin_unlock_irqrestore(&he_dev->global_lock, flags);
 		return -ENOMEM;
 	}
@@ -2591,7 +2591,7 @@ he_send(struct atm_vcc *vcc, struct sk_b
 					vcc->pop(vcc, skb);
 				else
 					dev_kfree_skb_any(skb);
-				atomic_inc(&vcc->stats->tx_err);
+				atomic_inc_unchecked(&vcc->stats->tx_err);
 				spin_unlock_irqrestore(&he_dev->global_lock, flags);
 				return -ENOMEM;
 			}
@@ -2622,7 +2622,7 @@ he_send(struct atm_vcc *vcc, struct sk_b
 	__enqueue_tpd(he_dev, tpd, cid);
 	spin_unlock_irqrestore(&he_dev->global_lock, flags);
 
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
diff -NurpP --minimal linux-3.2.22/drivers/atm/horizon.c linux-3.2.22-g-v/drivers/atm/horizon.c
--- linux-3.2.22/drivers/atm/horizon.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/horizon.c	2012-07-11 20:20:37.173973949 +0200
@@ -1035,7 +1035,7 @@ static void rx_schedule (hrz_dev * dev, 
 	{
 	  struct atm_vcc * vcc = ATM_SKB(skb)->vcc;
 	  // VC layer stats
-	  atomic_inc(&vcc->stats->rx);
+	  atomic_inc_unchecked(&vcc->stats->rx);
 	  __net_timestamp(skb);
 	  // end of our responsibility
 	  vcc->push (vcc, skb);
@@ -1187,7 +1187,7 @@ static void tx_schedule (hrz_dev * const
 	dev->tx_iovec = NULL;
 	
 	// VC layer stats
-	atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+	atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
 	
 	// free the skb
 	hrz_kfree_skb (skb);
diff -NurpP --minimal linux-3.2.22/drivers/atm/idt77252.c linux-3.2.22-g-v/drivers/atm/idt77252.c
--- linux-3.2.22/drivers/atm/idt77252.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/idt77252.c	2012-07-11 20:20:37.177310475 +0200
@@ -812,7 +812,7 @@ drain_scq(struct idt77252_dev *card, str
 		else
 			dev_kfree_skb(skb);
 
-		atomic_inc(&vcc->stats->tx);
+		atomic_inc_unchecked(&vcc->stats->tx);
 	}
 
 	atomic_dec(&scq->used);
@@ -1075,13 +1075,13 @@ dequeue_rx(struct idt77252_dev *card, st
 			if ((sb = dev_alloc_skb(64)) == NULL) {
 				printk("%s: Can't allocate buffers for aal0.\n",
 				       card->name);
-				atomic_add(i, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i, &vcc->stats->rx_drop);
 				break;
 			}
 			if (!atm_charge(vcc, sb->truesize)) {
 				RXPRINTK("%s: atm_charge() dropped aal0 packets.\n",
 					 card->name);
-				atomic_add(i - 1, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i - 1, &vcc->stats->rx_drop);
 				dev_kfree_skb(sb);
 				break;
 			}
@@ -1098,7 +1098,7 @@ dequeue_rx(struct idt77252_dev *card, st
 			ATM_SKB(sb)->vcc = vcc;
 			__net_timestamp(sb);
 			vcc->push(vcc, sb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 
 			cell += ATM_CELL_PAYLOAD;
 		}
@@ -1135,13 +1135,13 @@ dequeue_rx(struct idt77252_dev *card, st
 			         "(CDC: %08x)\n",
 			         card->name, len, rpp->len, readl(SAR_REG_CDC));
 			recycle_rx_pool_skb(card, rpp);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			return;
 		}
 		if (stat & SAR_RSQE_CRC) {
 			RXPRINTK("%s: AAL5 CRC error.\n", card->name);
 			recycle_rx_pool_skb(card, rpp);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			return;
 		}
 		if (skb_queue_len(&rpp->queue) > 1) {
@@ -1152,7 +1152,7 @@ dequeue_rx(struct idt77252_dev *card, st
 				RXPRINTK("%s: Can't alloc RX skb.\n",
 					 card->name);
 				recycle_rx_pool_skb(card, rpp);
-				atomic_inc(&vcc->stats->rx_err);
+				atomic_inc_unchecked(&vcc->stats->rx_err);
 				return;
 			}
 			if (!atm_charge(vcc, skb->truesize)) {
@@ -1171,7 +1171,7 @@ dequeue_rx(struct idt77252_dev *card, st
 			__net_timestamp(skb);
 
 			vcc->push(vcc, skb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 
 			return;
 		}
@@ -1193,7 +1193,7 @@ dequeue_rx(struct idt77252_dev *card, st
 		__net_timestamp(skb);
 
 		vcc->push(vcc, skb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 		if (skb->truesize > SAR_FB_SIZE_3)
 			add_rx_skb(card, 3, SAR_FB_SIZE_3, 1);
@@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *car
 		if (vcc->qos.aal != ATM_AAL0) {
 			RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n",
 				card->name, vpi, vci);
-			atomic_inc(&vcc->stats->rx_drop);
+			atomic_inc_unchecked(&vcc->stats->rx_drop);
 			goto drop;
 		}
 	
 		if ((sb = dev_alloc_skb(64)) == NULL) {
 			printk("%s: Can't allocate buffers for AAL0.\n",
 			       card->name);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto drop;
 		}
 
@@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *car
 		ATM_SKB(sb)->vcc = vcc;
 		__net_timestamp(sb);
 		vcc->push(vcc, sb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 drop:
 		skb_pull(queue, 64);
@@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, s
 
 	if (vc == NULL) {
 		printk("%s: NULL connection in send().\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
 	if (!test_bit(VCF_TX, &vc->flags)) {
 		printk("%s: Trying to transmit on a non-tx VC.\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, s
 		break;
 	default:
 		printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
 
 	if (skb_shinfo(skb)->nr_frags != 0) {
 		printk("%s: No scatter-gather yet.\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, s
 
 	err = queue_skb(card, vc, skb, oam);
 	if (err) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return err;
 	}
@@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, v
 	skb = dev_alloc_skb(64);
 	if (!skb) {
 		printk("%s: Out of memory in send_oam().\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOMEM;
 	}
 	atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
diff -NurpP --minimal linux-3.2.22/drivers/atm/iphase.c linux-3.2.22-g-v/drivers/atm/iphase.c
--- linux-3.2.22/drivers/atm/iphase.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/iphase.c	2012-07-11 20:20:37.180640365 +0200
@@ -1146,7 +1146,7 @@ static int rx_pkt(struct atm_dev *dev)  
 	status = (u_short) (buf_desc_ptr->desc_mode);  
 	if (status & (RX_CER | RX_PTE | RX_OFL))  
 	{  
-                atomic_inc(&vcc->stats->rx_err);
+                atomic_inc_unchecked(&vcc->stats->rx_err);
 		IF_ERR(printk("IA: bad packet, dropping it");)  
                 if (status & RX_CER) { 
                     IF_ERR(printk(" cause: packet CRC error\n");)
@@ -1169,7 +1169,7 @@ static int rx_pkt(struct atm_dev *dev)  
 	len = dma_addr - buf_addr;  
         if (len > iadev->rx_buf_sz) {
            printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
-           atomic_inc(&vcc->stats->rx_err);
+           atomic_inc_unchecked(&vcc->stats->rx_err);
 	   goto out_free_desc;
         }
 		  
@@ -1319,7 +1319,7 @@ static void rx_dle_intr(struct atm_dev *
           ia_vcc = INPH_IA_VCC(vcc);
           if (ia_vcc == NULL)
           {
-             atomic_inc(&vcc->stats->rx_err);
+             atomic_inc_unchecked(&vcc->stats->rx_err);
              dev_kfree_skb_any(skb);
              atm_return(vcc, atm_guess_pdu2truesize(len));
              goto INCR_DLE;
@@ -1331,7 +1331,7 @@ static void rx_dle_intr(struct atm_dev *
           if ((length > iadev->rx_buf_sz) || (length > 
                               (skb->len - sizeof(struct cpcs_trailer))))
           {
-             atomic_inc(&vcc->stats->rx_err);
+             atomic_inc_unchecked(&vcc->stats->rx_err);
              IF_ERR(printk("rx_dle_intr: Bad  AAL5 trailer %d (skb len %d)", 
                                                             length, skb->len);)
              dev_kfree_skb_any(skb);
@@ -1347,7 +1347,7 @@ static void rx_dle_intr(struct atm_dev *
 
 	  IF_RX(printk("rx_dle_intr: skb push");)  
 	  vcc->push(vcc,skb);  
-	  atomic_inc(&vcc->stats->rx);
+	  atomic_inc_unchecked(&vcc->stats->rx);
           iadev->rx_pkt_cnt++;
       }  
 INCR_DLE:
@@ -2827,15 +2827,15 @@ static int ia_ioctl(struct atm_dev *dev,
          {
              struct k_sonet_stats *stats;
              stats = &PRIV(_ia_dev[board])->sonet_stats;
-             printk("section_bip: %d\n", atomic_read(&stats->section_bip));
-             printk("line_bip   : %d\n", atomic_read(&stats->line_bip));
-             printk("path_bip   : %d\n", atomic_read(&stats->path_bip));
-             printk("line_febe  : %d\n", atomic_read(&stats->line_febe));
-             printk("path_febe  : %d\n", atomic_read(&stats->path_febe));
-             printk("corr_hcs   : %d\n", atomic_read(&stats->corr_hcs));
-             printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
-             printk("tx_cells   : %d\n", atomic_read(&stats->tx_cells));
-             printk("rx_cells   : %d\n", atomic_read(&stats->rx_cells));
+             printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip));
+             printk("line_bip   : %d\n", atomic_read_unchecked(&stats->line_bip));
+             printk("path_bip   : %d\n", atomic_read_unchecked(&stats->path_bip));
+             printk("line_febe  : %d\n", atomic_read_unchecked(&stats->line_febe));
+             printk("path_febe  : %d\n", atomic_read_unchecked(&stats->path_febe));
+             printk("corr_hcs   : %d\n", atomic_read_unchecked(&stats->corr_hcs));
+             printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs));
+             printk("tx_cells   : %d\n", atomic_read_unchecked(&stats->tx_cells));
+             printk("rx_cells   : %d\n", atomic_read_unchecked(&stats->rx_cells));
          }
             ia_cmds.status = 0;
             break;
@@ -2940,7 +2940,7 @@ static int ia_pkt_tx (struct atm_vcc *vc
 	if ((desc == 0) || (desc > iadev->num_tx_desc))  
 	{  
 		IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) 
-                atomic_inc(&vcc->stats->tx);
+                atomic_inc_unchecked(&vcc->stats->tx);
 		if (vcc->pop)   
 		    vcc->pop(vcc, skb);   
 		else  
@@ -3045,14 +3045,14 @@ static int ia_pkt_tx (struct atm_vcc *vc
         ATM_DESC(skb) = vcc->vci;
         skb_queue_tail(&iadev->tx_dma_q, skb);
 
-        atomic_inc(&vcc->stats->tx);
+        atomic_inc_unchecked(&vcc->stats->tx);
         iadev->tx_pkt_cnt++;
 	/* Increment transaction counter */  
 	writel(2, iadev->dma+IPHASE5575_TX_COUNTER);  
         
 #if 0        
         /* add flow control logic */ 
-        if (atomic_read(&vcc->stats->tx) % 20 == 0) {
+        if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) {
           if (iavcc->vc_desc_cnt > 10) {
              vcc->tx_quota =  vcc->tx_quota * 3 / 4;
             printk("Tx1:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
diff -NurpP --minimal linux-3.2.22/drivers/atm/lanai.c linux-3.2.22-g-v/drivers/atm/lanai.c
--- linux-3.2.22/drivers/atm/lanai.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/lanai.c	2012-07-11 20:20:37.180640365 +0200
@@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct l
 	vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0);
 	lanai_endtx(lanai, lvcc);
 	lanai_free_skb(lvcc->tx.atmvcc, skb);
-	atomic_inc(&lvcc->tx.atmvcc->stats->tx);
+	atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx);
 }
 
 /* Try to fill the buffer - don't call unless there is backlog */
@@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc
 	ATM_SKB(skb)->vcc = lvcc->rx.atmvcc;
 	__net_timestamp(skb);
 	lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb);
-	atomic_inc(&lvcc->rx.atmvcc->stats->rx);
+	atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx);
     out:
 	lvcc->rx.buf.ptr = end;
 	cardvcc_write(lvcc, endptr, vcc_rxreadptr);
@@ -1667,7 +1667,7 @@ static int handle_service(struct lanai_d
 		DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 "
 		    "vcc %d\n", lanai->number, (unsigned int) s, vci);
 		lanai->stats.service_rxnotaal5++;
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		return 0;
 	}
 	if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) {
@@ -1679,7 +1679,7 @@ static int handle_service(struct lanai_d
 		int bytes;
 		read_unlock(&vcc_sklist_lock);
 		DPRINTK("got trashed rx pdu on vci %d\n", vci);
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		lvcc->stats.x.aal5.service_trash++;
 		bytes = (SERVICE_GET_END(s) * 16) -
 		    (((unsigned long) lvcc->rx.buf.ptr) -
@@ -1691,7 +1691,7 @@ static int handle_service(struct lanai_d
 	}
 	if (s & SERVICE_STREAM) {
 		read_unlock(&vcc_sklist_lock);
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		lvcc->stats.x.aal5.service_stream++;
 		printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream "
 		    "PDU on VCI %d!\n", lanai->number, vci);
@@ -1699,7 +1699,7 @@ static int handle_service(struct lanai_d
 		return 0;
 	}
 	DPRINTK("got rx crc error on vci %d\n", vci);
-	atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+	atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 	lvcc->stats.x.aal5.service_rxcrc++;
 	lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4];
 	cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr);
diff -NurpP --minimal linux-3.2.22/drivers/atm/nicstar.c linux-3.2.22-g-v/drivers/atm/nicstar.c
--- linux-3.2.22/drivers/atm/nicstar.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/nicstar.c	2012-07-11 20:20:37.183975796 +0200
@@ -1654,7 +1654,7 @@ static int ns_send(struct atm_vcc *vcc, 
 	if ((vc = (vc_map *) vcc->dev_data) == NULL) {
 		printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1662,7 +1662,7 @@ static int ns_send(struct atm_vcc *vcc, 
 	if (!vc->tx) {
 		printk("nicstar%d: Trying to transmit on a non-tx VC.\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1670,14 +1670,14 @@ static int ns_send(struct atm_vcc *vcc, 
 	if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) {
 		printk("nicstar%d: Only AAL0 and AAL5 are supported.\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
 
 	if (skb_shinfo(skb)->nr_frags != 0) {
 		printk("nicstar%d: No scatter-gather yet.\n", card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1725,11 +1725,11 @@ static int ns_send(struct atm_vcc *vcc, 
 	}
 
 	if (push_scqe(card, vc, scq, &scqe, skb) != 0) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EIO;
 	}
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
@@ -2046,14 +2046,14 @@ static void dequeue_rx(ns_dev * card, ns
 				printk
 				    ("nicstar%d: Can't allocate buffers for aal0.\n",
 				     card->index);
-				atomic_add(i, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i, &vcc->stats->rx_drop);
 				break;
 			}
 			if (!atm_charge(vcc, sb->truesize)) {
 				RXPRINTK
 				    ("nicstar%d: atm_charge() dropped aal0 packets.\n",
 				     card->index);
-				atomic_add(i - 1, &vcc->stats->rx_drop);	/* already increased by 1 */
+				atomic_add_unchecked(i - 1, &vcc->stats->rx_drop);	/* already increased by 1 */
 				dev_kfree_skb_any(sb);
 				break;
 			}
@@ -2068,7 +2068,7 @@ static void dequeue_rx(ns_dev * card, ns
 			ATM_SKB(sb)->vcc = vcc;
 			__net_timestamp(sb);
 			vcc->push(vcc, sb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 			cell += ATM_CELL_PAYLOAD;
 		}
 
@@ -2085,7 +2085,7 @@ static void dequeue_rx(ns_dev * card, ns
 			if (iovb == NULL) {
 				printk("nicstar%d: Out of iovec buffers.\n",
 				       card->index);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 				recycle_rx_buf(card, skb);
 				return;
 			}
@@ -2109,7 +2109,7 @@ static void dequeue_rx(ns_dev * card, ns
 		   small or large buffer itself. */
 	} else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) {
 		printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 		recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 				      NS_MAX_IOVECS);
 		NS_PRV_IOVCNT(iovb) = 0;
@@ -2129,7 +2129,7 @@ static void dequeue_rx(ns_dev * card, ns
 			    ("nicstar%d: Expected a small buffer, and this is not one.\n",
 			     card->index);
 			which_list(card, skb);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_rx_buf(card, skb);
 			vc->rx_iov = NULL;
 			recycle_iov_buf(card, iovb);
@@ -2142,7 +2142,7 @@ static void dequeue_rx(ns_dev * card, ns
 			    ("nicstar%d: Expected a large buffer, and this is not one.\n",
 			     card->index);
 			which_list(card, skb);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 					      NS_PRV_IOVCNT(iovb));
 			vc->rx_iov = NULL;
@@ -2165,7 +2165,7 @@ static void dequeue_rx(ns_dev * card, ns
 				printk(" - PDU size mismatch.\n");
 			else
 				printk(".\n");
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 					      NS_PRV_IOVCNT(iovb));
 			vc->rx_iov = NULL;
@@ -2179,7 +2179,7 @@ static void dequeue_rx(ns_dev * card, ns
 			/* skb points to a small buffer */
 			if (!atm_charge(vcc, skb->truesize)) {
 				push_rxbufs(card, skb);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			} else {
 				skb_put(skb, len);
 				dequeue_sm_buf(card, skb);
@@ -2189,7 +2189,7 @@ static void dequeue_rx(ns_dev * card, ns
 				ATM_SKB(skb)->vcc = vcc;
 				__net_timestamp(skb);
 				vcc->push(vcc, skb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 			}
 		} else if (NS_PRV_IOVCNT(iovb) == 2) {	/* One small plus one large buffer */
 			struct sk_buff *sb;
@@ -2200,7 +2200,7 @@ static void dequeue_rx(ns_dev * card, ns
 			if (len <= NS_SMBUFSIZE) {
 				if (!atm_charge(vcc, sb->truesize)) {
 					push_rxbufs(card, sb);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 				} else {
 					skb_put(sb, len);
 					dequeue_sm_buf(card, sb);
@@ -2210,7 +2210,7 @@ static void dequeue_rx(ns_dev * card, ns
 					ATM_SKB(sb)->vcc = vcc;
 					__net_timestamp(sb);
 					vcc->push(vcc, sb);
-					atomic_inc(&vcc->stats->rx);
+					atomic_inc_unchecked(&vcc->stats->rx);
 				}
 
 				push_rxbufs(card, skb);
@@ -2219,7 +2219,7 @@ static void dequeue_rx(ns_dev * card, ns
 
 				if (!atm_charge(vcc, skb->truesize)) {
 					push_rxbufs(card, skb);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 				} else {
 					dequeue_lg_buf(card, skb);
 #ifdef NS_USE_DESTRUCTORS
@@ -2232,7 +2232,7 @@ static void dequeue_rx(ns_dev * card, ns
 					ATM_SKB(skb)->vcc = vcc;
 					__net_timestamp(skb);
 					vcc->push(vcc, skb);
-					atomic_inc(&vcc->stats->rx);
+					atomic_inc_unchecked(&vcc->stats->rx);
 				}
 
 				push_rxbufs(card, sb);
@@ -2253,7 +2253,7 @@ static void dequeue_rx(ns_dev * card, ns
 					printk
 					    ("nicstar%d: Out of huge buffers.\n",
 					     card->index);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 					recycle_iovec_rx_bufs(card,
 							      (struct iovec *)
 							      iovb->data,
@@ -2304,7 +2304,7 @@ static void dequeue_rx(ns_dev * card, ns
 					card->hbpool.count++;
 				} else
 					dev_kfree_skb_any(hb);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			} else {
 				/* Copy the small buffer to the huge buffer */
 				sb = (struct sk_buff *)iov->iov_base;
@@ -2341,7 +2341,7 @@ static void dequeue_rx(ns_dev * card, ns
 #endif /* NS_USE_DESTRUCTORS */
 				__net_timestamp(hb);
 				vcc->push(vcc, hb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 			}
 		}
 
diff -NurpP --minimal linux-3.2.22/drivers/atm/solos-pci.c linux-3.2.22-g-v/drivers/atm/solos-pci.c
--- linux-3.2.22/drivers/atm/solos-pci.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/solos-pci.c	2012-07-11 20:20:37.183975796 +0200
@@ -714,7 +714,7 @@ void solos_bh(unsigned long card_arg)
 				}
 				atm_charge(vcc, skb->truesize);
 				vcc->push(vcc, skb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 				break;
 
 			case PKT_STATUS:
@@ -1009,7 +1009,7 @@ static uint32_t fpga_tx(struct solos_car
 			vcc = SKB_CB(oldskb)->vcc;
 
 			if (vcc) {
-				atomic_inc(&vcc->stats->tx);
+				atomic_inc_unchecked(&vcc->stats->tx);
 				solos_pop(vcc, oldskb);
 			} else
 				dev_kfree_skb_irq(oldskb);
diff -NurpP --minimal linux-3.2.22/drivers/atm/suni.c linux-3.2.22-g-v/drivers/atm/suni.c
--- linux-3.2.22/drivers/atm/suni.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/suni.c	2012-07-11 20:20:37.183975796 +0200
@@ -50,8 +50,8 @@ static DEFINE_SPINLOCK(sunis_lock);
 
 
 #define ADD_LIMITED(s,v) \
-    atomic_add((v),&stats->s); \
-    if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX);
+    atomic_add_unchecked((v),&stats->s); \
+    if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX);
 
 
 static void suni_hz(unsigned long from_timer)
diff -NurpP --minimal linux-3.2.22/drivers/atm/uPD98402.c linux-3.2.22-g-v/drivers/atm/uPD98402.c
--- linux-3.2.22/drivers/atm/uPD98402.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/uPD98402.c	2012-07-11 20:20:37.187309374 +0200
@@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *d
 	struct sonet_stats tmp;
  	int error = 0;
 
-	atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
+	atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
 	sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp);
 	if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp));
 	if (zero && !error) {
@@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev
 
 
 #define ADD_LIMITED(s,v) \
-    { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \
-    if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \
-	atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); }
+    { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \
+    if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); }
 
 
 static void stat_event(struct atm_dev *dev)
@@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev 
 		if (reason & uPD98402_INT_PFM) stat_event(dev);
 		if (reason & uPD98402_INT_PCO) {
 			(void) GET(PCOCR); /* clear interrupt cause */
-			atomic_add(GET(HECCT),
+			atomic_add_unchecked(GET(HECCT),
 			    &PRIV(dev)->sonet_stats.uncorr_hcs);
 		}
 		if ((reason & uPD98402_INT_RFO) && 
@@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev
 	PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO |
 	  uPD98402_INT_LOS),PIMR); /* enable them */
 	(void) fetch_stats(dev,NULL,1); /* clear kernel counters */
-	atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1);
-	atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1);
-	atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1);
 	return 0;
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/atm/zatm.c linux-3.2.22-g-v/drivers/atm/zatm.c
--- linux-3.2.22/drivers/atm/zatm.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/atm/zatm.c	2012-07-11 20:20:37.187309374 +0200
@@ -460,7 +460,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy
 		}
 		if (!size) {
 			dev_kfree_skb_irq(skb);
-			if (vcc) atomic_inc(&vcc->stats->rx_err);
+			if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err);
 			continue;
 		}
 		if (!atm_charge(vcc,skb->truesize)) {
@@ -470,7 +470,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy
 		skb->len = size;
 		ATM_SKB(skb)->vcc = vcc;
 		vcc->push(vcc,skb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 	}
 	zout(pos & 0xffff,MTA(mbx));
 #if 0 /* probably a stupid idea */
@@ -734,7 +734,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD
 			skb_queue_head(&zatm_vcc->backlog,skb);
 			break;
 		}
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 	wake_up(&zatm_vcc->tx_wait);
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/base/devtmpfs.c linux-3.2.22-g-v/drivers/base/devtmpfs.c
--- linux-3.2.22/drivers/base/devtmpfs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/base/devtmpfs.c	2012-07-11 20:20:37.187309374 +0200
@@ -368,7 +368,7 @@ int devtmpfs_mount(const char *mntdir)
 	if (!thread)
 		return 0;
 
-	err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL);
+	err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)mntdir, (char __force_user *)"devtmpfs", MS_SILENT, NULL);
 	if (err)
 		printk(KERN_INFO "devtmpfs: error mounting %i\n", err);
 	else
diff -NurpP --minimal linux-3.2.22/drivers/base/node.c linux-3.2.22-g-v/drivers/base/node.c
--- linux-3.2.22/drivers/base/node.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/base/node.c	2012-07-11 20:20:37.187309374 +0200
@@ -587,11 +587,9 @@ static ssize_t print_nodes_state(enum no
 {
 	int n;
 
-	n = nodelist_scnprintf(buf, PAGE_SIZE, node_states[state]);
-	if (n > 0 && PAGE_SIZE > n + 1) {
-		*(buf + n++) = '\n';
-		*(buf + n++) = '\0';
-	}
+	n = nodelist_scnprintf(buf, PAGE_SIZE-2, node_states[state]);
+	buf[n++] = '\n';
+	buf[n] = '\0';
 	return n;
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/base/power/wakeup.c linux-3.2.22-g-v/drivers/base/power/wakeup.c
--- linux-3.2.22/drivers/base/power/wakeup.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/base/power/wakeup.c	2012-07-11 20:20:37.190639556 +0200
@@ -30,14 +30,14 @@ bool events_check_enabled;
  * They need to be modified together atomically, so it's better to use one
  * atomic variable to hold them both.
  */
-static atomic_t combined_event_count = ATOMIC_INIT(0);
+static atomic_unchecked_t combined_event_count = ATOMIC_INIT(0);
 
 #define IN_PROGRESS_BITS	(sizeof(int) * 4)
 #define MAX_IN_PROGRESS		((1 << IN_PROGRESS_BITS) - 1)
 
 static void split_counters(unsigned int *cnt, unsigned int *inpr)
 {
-	unsigned int comb = atomic_read(&combined_event_count);
+	unsigned int comb = atomic_read_unchecked(&combined_event_count);
 
 	*cnt = (comb >> IN_PROGRESS_BITS);
 	*inpr = comb & MAX_IN_PROGRESS;
@@ -353,7 +353,7 @@ static void wakeup_source_activate(struc
 	ws->last_time = ktime_get();
 
 	/* Increment the counter of events in progress. */
-	atomic_inc(&combined_event_count);
+	atomic_inc_unchecked(&combined_event_count);
 }
 
 /**
@@ -443,7 +443,7 @@ static void wakeup_source_deactivate(str
 	 * Increment the counter of registered wakeup events and decrement the
 	 * couter of wakeup events in progress simultaneously.
 	 */
-	atomic_add(MAX_IN_PROGRESS, &combined_event_count);
+	atomic_add_unchecked(MAX_IN_PROGRESS, &combined_event_count);
 }
 
 /**
diff -NurpP --minimal linux-3.2.22/drivers/block/cciss.c linux-3.2.22-g-v/drivers/block/cciss.c
--- linux-3.2.22/drivers/block/cciss.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/cciss.c	2012-07-11 20:20:37.190639556 +0200
@@ -1198,6 +1198,8 @@ static int cciss_ioctl32_passthru(struct
 	int err;
 	u32 cp;
 
+	memset(&arg64, 0, sizeof(arg64));
+
 	err = 0;
 	err |=
 	    copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
@@ -3007,7 +3009,7 @@ static void start_io(ctlr_info_t *h)
 	while (!list_empty(&h->reqQ)) {
 		c = list_entry(h->reqQ.next, CommandList_struct, list);
 		/* can't do anything if fifo is full */
-		if ((h->access.fifo_full(h))) {
+		if ((h->access->fifo_full(h))) {
 			dev_warn(&h->pdev->dev, "fifo full\n");
 			break;
 		}
@@ -3017,7 +3019,7 @@ static void start_io(ctlr_info_t *h)
 		h->Qdepth--;
 
 		/* Tell the controller execute command */
-		h->access.submit_command(h, c);
+		h->access->submit_command(h, c);
 
 		/* Put job onto the completed Q */
 		addQ(&h->cmpQ, c);
@@ -3443,17 +3445,17 @@ startio:
 
 static inline unsigned long get_next_completion(ctlr_info_t *h)
 {
-	return h->access.command_completed(h);
+	return h->access->command_completed(h);
 }
 
 static inline int interrupt_pending(ctlr_info_t *h)
 {
-	return h->access.intr_pending(h);
+	return h->access->intr_pending(h);
 }
 
 static inline long interrupt_not_for_us(ctlr_info_t *h)
 {
-	return ((h->access.intr_pending(h) == 0) ||
+	return ((h->access->intr_pending(h) == 0) ||
 		(h->interrupts_enabled == 0));
 }
 
@@ -3486,7 +3488,7 @@ static inline u32 next_command(ctlr_info
 	u32 a;
 
 	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
-		return h->access.command_completed(h);
+		return h->access->command_completed(h);
 
 	if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
 		a = *(h->reply_pool_head); /* Next cmd in ring buffer */
@@ -4044,7 +4046,7 @@ static void __devinit cciss_put_controll
 		trans_support & CFGTBL_Trans_use_short_tags);
 
 	/* Change the access methods to the performant access methods */
-	h->access = SA5_performant_access;
+	h->access = &SA5_performant_access;
 	h->transMethod = CFGTBL_Trans_Performant;
 
 	return;
@@ -4316,7 +4318,7 @@ static int __devinit cciss_pci_init(ctlr
 	if (prod_index < 0)
 		return -ENODEV;
 	h->product_name = products[prod_index].product_name;
-	h->access = *(products[prod_index].access);
+	h->access = products[prod_index].access;
 
 	if (cciss_board_disabled(h)) {
 		dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
@@ -5041,7 +5043,7 @@ reinit_after_soft_reset:
 	}
 
 	/* make sure the board interrupts are off */
-	h->access.set_intr_mask(h, CCISS_INTR_OFF);
+	h->access->set_intr_mask(h, CCISS_INTR_OFF);
 	rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx);
 	if (rc)
 		goto clean2;
@@ -5093,7 +5095,7 @@ reinit_after_soft_reset:
 		 * fake ones to scoop up any residual completions.
 		 */
 		spin_lock_irqsave(&h->lock, flags);
-		h->access.set_intr_mask(h, CCISS_INTR_OFF);
+		h->access->set_intr_mask(h, CCISS_INTR_OFF);
 		spin_unlock_irqrestore(&h->lock, flags);
 		free_irq(h->intr[h->intr_mode], h);
 		rc = cciss_request_irq(h, cciss_msix_discard_completions,
@@ -5113,9 +5115,9 @@ reinit_after_soft_reset:
 		dev_info(&h->pdev->dev, "Board READY.\n");
 		dev_info(&h->pdev->dev,
 			"Waiting for stale completions to drain.\n");
-		h->access.set_intr_mask(h, CCISS_INTR_ON);
+		h->access->set_intr_mask(h, CCISS_INTR_ON);
 		msleep(10000);
-		h->access.set_intr_mask(h, CCISS_INTR_OFF);
+		h->access->set_intr_mask(h, CCISS_INTR_OFF);
 
 		rc = controller_reset_failed(h->cfgtable);
 		if (rc)
@@ -5138,7 +5140,7 @@ reinit_after_soft_reset:
 	cciss_scsi_setup(h);
 
 	/* Turn the interrupts on so we can service requests */
-	h->access.set_intr_mask(h, CCISS_INTR_ON);
+	h->access->set_intr_mask(h, CCISS_INTR_ON);
 
 	/* Get the firmware version */
 	inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
@@ -5211,7 +5213,7 @@ static void cciss_shutdown(struct pci_de
 	kfree(flush_buf);
 	if (return_code != IO_OK)
 		dev_warn(&h->pdev->dev, "Error flushing cache\n");
-	h->access.set_intr_mask(h, CCISS_INTR_OFF);
+	h->access->set_intr_mask(h, CCISS_INTR_OFF);
 	free_irq(h->intr[h->intr_mode], h);
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/block/cciss.h linux-3.2.22-g-v/drivers/block/cciss.h
--- linux-3.2.22/drivers/block/cciss.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/cciss.h	2012-07-11 20:20:37.193991595 +0200
@@ -101,7 +101,7 @@ struct ctlr_info
 	/* information about each logical volume */
 	drive_info_struct *drv[CISS_MAX_LUN];
 
-	struct access_method access;
+	struct access_method *access;
 
 	/* queue and queue Info */ 
 	struct list_head reqQ;
diff -NurpP --minimal linux-3.2.22/drivers/block/cpqarray.c linux-3.2.22-g-v/drivers/block/cpqarray.c
--- linux-3.2.22/drivers/block/cpqarray.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/cpqarray.c	2012-07-11 20:20:37.193991595 +0200
@@ -404,7 +404,7 @@ static int __devinit cpqarray_register_c
 	if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
 		goto Enomem4;
 	}
-	hba[i]->access.set_intr_mask(hba[i], 0);
+	hba[i]->access->set_intr_mask(hba[i], 0);
 	if (request_irq(hba[i]->intr, do_ida_intr,
 		IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i]))
 	{
@@ -459,7 +459,7 @@ static int __devinit cpqarray_register_c
 	add_timer(&hba[i]->timer);
 
 	/* Enable IRQ now that spinlock and rate limit timer are set up */
-	hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
+	hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY);
 
 	for(j=0; j<NWD; j++) {
 		struct gendisk *disk = ida_gendisk[i][j];
@@ -694,7 +694,7 @@ DBGINFO(
 	for(i=0; i<NR_PRODUCTS; i++) {
 		if (board_id == products[i].board_id) {
 			c->product_name = products[i].product_name;
-			c->access = *(products[i].access);
+			c->access = products[i].access;
 			break;
 		}
 	}
@@ -792,7 +792,7 @@ static int __devinit cpqarray_eisa_detec
 		hba[ctlr]->intr = intr;
 		sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr);
 		hba[ctlr]->product_name = products[j].product_name;
-		hba[ctlr]->access = *(products[j].access);
+		hba[ctlr]->access = products[j].access;
 		hba[ctlr]->ctlr = ctlr;
 		hba[ctlr]->board_id = board_id;
 		hba[ctlr]->pci_dev = NULL; /* not PCI */
@@ -980,7 +980,7 @@ static void start_io(ctlr_info_t *h)
 
 	while((c = h->reqQ) != NULL) {
 		/* Can't do anything if we're busy */
-		if (h->access.fifo_full(h) == 0)
+		if (h->access->fifo_full(h) == 0)
 			return;
 
 		/* Get the first entry from the request Q */
@@ -988,7 +988,7 @@ static void start_io(ctlr_info_t *h)
 		h->Qdepth--;
 	
 		/* Tell the controller to do our bidding */
-		h->access.submit_command(h, c);
+		h->access->submit_command(h, c);
 
 		/* Get onto the completion Q */
 		addQ(&h->cmpQ, c);
@@ -1050,7 +1050,7 @@ static irqreturn_t do_ida_intr(int irq, 
 	unsigned long flags;
 	__u32 a,a1;
 
-	istat = h->access.intr_pending(h);
+	istat = h->access->intr_pending(h);
 	/* Is this interrupt for us? */
 	if (istat == 0)
 		return IRQ_NONE;
@@ -1061,7 +1061,7 @@ static irqreturn_t do_ida_intr(int irq, 
 	 */
 	spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
 	if (istat & FIFO_NOT_EMPTY) {
-		while((a = h->access.command_completed(h))) {
+		while((a = h->access->command_completed(h))) {
 			a1 = a; a &= ~3;
 			if ((c = h->cmpQ) == NULL)
 			{  
@@ -1449,11 +1449,11 @@ static int sendcmd(
 	/*
 	 * Disable interrupt
 	 */
-	info_p->access.set_intr_mask(info_p, 0);
+	info_p->access->set_intr_mask(info_p, 0);
 	/* Make sure there is room in the command FIFO */
 	/* Actually it should be completely empty at this time. */
 	for (i = 200000; i > 0; i--) {
-		temp = info_p->access.fifo_full(info_p);
+		temp = info_p->access->fifo_full(info_p);
 		if (temp != 0) {
 			break;
 		}
@@ -1466,7 +1466,7 @@ DBG(
 	/*
 	 * Send the cmd
 	 */
-	info_p->access.submit_command(info_p, c);
+	info_p->access->submit_command(info_p, c);
 	complete = pollcomplete(ctlr);
 	
 	pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, 
@@ -1549,9 +1549,9 @@ static int revalidate_allvol(ctlr_info_t
 	 * we check the new geometry.  Then turn interrupts back on when
 	 * we're done.
 	 */
-	host->access.set_intr_mask(host, 0);
+	host->access->set_intr_mask(host, 0);
 	getgeometry(ctlr);
-	host->access.set_intr_mask(host, FIFO_NOT_EMPTY);
+	host->access->set_intr_mask(host, FIFO_NOT_EMPTY);
 
 	for(i=0; i<NWD; i++) {
 		struct gendisk *disk = ida_gendisk[ctlr][i];
@@ -1591,7 +1591,7 @@ static int pollcomplete(int ctlr)
 	/* Wait (up to 2 seconds) for a command to complete */
 
 	for (i = 200000; i > 0; i--) {
-		done = hba[ctlr]->access.command_completed(hba[ctlr]);
+		done = hba[ctlr]->access->command_completed(hba[ctlr]);
 		if (done == 0) {
 			udelay(10);	/* a short fixed delay */
 		} else
diff -NurpP --minimal linux-3.2.22/drivers/block/cpqarray.h linux-3.2.22-g-v/drivers/block/cpqarray.h
--- linux-3.2.22/drivers/block/cpqarray.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/cpqarray.h	2012-07-11 20:20:37.193991595 +0200
@@ -99,7 +99,7 @@ struct ctlr_info {
 	drv_info_t	drv[NWD];
 	struct proc_dir_entry *proc;
 
-	struct access_method access;
+	struct access_method *access;
 
 	cmdlist_t *reqQ;
 	cmdlist_t *cmpQ;
diff -NurpP --minimal linux-3.2.22/drivers/block/drbd/drbd_int.h linux-3.2.22-g-v/drivers/block/drbd/drbd_int.h
--- linux-3.2.22/drivers/block/drbd/drbd_int.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/drbd/drbd_int.h	2012-07-11 20:20:37.197307281 +0200
@@ -736,7 +736,7 @@ struct drbd_request;
 struct drbd_epoch {
 	struct list_head list;
 	unsigned int barrier_nr;
-	atomic_t epoch_size; /* increased on every request added. */
+	atomic_unchecked_t epoch_size; /* increased on every request added. */
 	atomic_t active;     /* increased on every req. added, and dec on every finished. */
 	unsigned long flags;
 };
@@ -1108,7 +1108,7 @@ struct drbd_conf {
 	void *int_dig_in;
 	void *int_dig_vv;
 	wait_queue_head_t seq_wait;
-	atomic_t packet_seq;
+	atomic_unchecked_t packet_seq;
 	unsigned int peer_seq;
 	spinlock_t peer_seq_lock;
 	unsigned int minor;
@@ -1617,30 +1617,30 @@ static inline int drbd_setsockopt(struct
 
 static inline void drbd_tcp_cork(struct socket *sock)
 {
-	int __user val = 1;
+	int val = 1;
 	(void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK,
-			(char __user *)&val, sizeof(val));
+			(char __force_user *)&val, sizeof(val));
 }
 
 static inline void drbd_tcp_uncork(struct socket *sock)
 {
-	int __user val = 0;
+	int val = 0;
 	(void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK,
-			(char __user *)&val, sizeof(val));
+			(char __force_user *)&val, sizeof(val));
 }
 
 static inline void drbd_tcp_nodelay(struct socket *sock)
 {
-	int __user val = 1;
+	int val = 1;
 	(void) drbd_setsockopt(sock, SOL_TCP, TCP_NODELAY,
-			(char __user *)&val, sizeof(val));
+			(char __force_user *)&val, sizeof(val));
 }
 
 static inline void drbd_tcp_quickack(struct socket *sock)
 {
-	int __user val = 2;
+	int val = 2;
 	(void) drbd_setsockopt(sock, SOL_TCP, TCP_QUICKACK,
-			(char __user *)&val, sizeof(val));
+			(char __force_user *)&val, sizeof(val));
 }
 
 void drbd_bump_write_ordering(struct drbd_conf *mdev, enum write_ordering_e wo);
diff -NurpP --minimal linux-3.2.22/drivers/block/drbd/drbd_main.c linux-3.2.22-g-v/drivers/block/drbd/drbd_main.c
--- linux-3.2.22/drivers/block/drbd/drbd_main.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/drbd/drbd_main.c	2012-07-11 20:20:37.197307281 +0200
@@ -2397,7 +2397,7 @@ static int _drbd_send_ack(struct drbd_co
 	p.sector   = sector;
 	p.block_id = block_id;
 	p.blksize  = blksize;
-	p.seq_num  = cpu_to_be32(atomic_add_return(1, &mdev->packet_seq));
+	p.seq_num  = cpu_to_be32(atomic_add_return_unchecked(1, &mdev->packet_seq));
 
 	if (!mdev->meta.socket || mdev->state.conn < C_CONNECTED)
 		return false;
@@ -2696,7 +2696,7 @@ int drbd_send_dblock(struct drbd_conf *m
 	p.sector   = cpu_to_be64(req->sector);
 	p.block_id = (unsigned long)req;
 	p.seq_num  = cpu_to_be32(req->seq_num =
-				 atomic_add_return(1, &mdev->packet_seq));
+				 atomic_add_return_unchecked(1, &mdev->packet_seq));
 
 	dp_flags = bio_flags_to_wire(mdev, req->master_bio->bi_rw);
 
@@ -2981,7 +2981,7 @@ void drbd_init_set_defaults(struct drbd_
 	atomic_set(&mdev->unacked_cnt, 0);
 	atomic_set(&mdev->local_cnt, 0);
 	atomic_set(&mdev->net_cnt, 0);
-	atomic_set(&mdev->packet_seq, 0);
+	atomic_set_unchecked(&mdev->packet_seq, 0);
 	atomic_set(&mdev->pp_in_use, 0);
 	atomic_set(&mdev->pp_in_use_by_net, 0);
 	atomic_set(&mdev->rs_sect_in, 0);
@@ -3063,8 +3063,8 @@ void drbd_mdev_cleanup(struct drbd_conf 
 				mdev->receiver.t_state);
 
 	/* no need to lock it, I'm the only thread alive */
-	if (atomic_read(&mdev->current_epoch->epoch_size) !=  0)
-		dev_err(DEV, "epoch_size:%d\n", atomic_read(&mdev->current_epoch->epoch_size));
+	if (atomic_read_unchecked(&mdev->current_epoch->epoch_size) !=  0)
+		dev_err(DEV, "epoch_size:%d\n", atomic_read_unchecked(&mdev->current_epoch->epoch_size));
 	mdev->al_writ_cnt  =
 	mdev->bm_writ_cnt  =
 	mdev->read_cnt     =
diff -NurpP --minimal linux-3.2.22/drivers/block/drbd/drbd_nl.c linux-3.2.22-g-v/drivers/block/drbd/drbd_nl.c
--- linux-3.2.22/drivers/block/drbd/drbd_nl.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/drbd/drbd_nl.c	2012-07-11 20:20:37.200620722 +0200
@@ -2297,7 +2297,7 @@ static void drbd_connector_callback(stru
 		return;
 	}
 
-	if (!cap_raised(current_cap(), CAP_SYS_ADMIN)) {
+	if (!capable(CAP_SYS_ADMIN)) {
 		retcode = ERR_PERM;
 		goto fail;
 	}
@@ -2359,7 +2359,7 @@ static void drbd_connector_callback(stru
 	module_put(THIS_MODULE);
 }
 
-static atomic_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */
+static atomic_unchecked_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */
 
 static unsigned short *
 __tl_add_blob(unsigned short *tl, enum drbd_tags tag, const void *data,
@@ -2430,7 +2430,7 @@ void drbd_bcast_state(struct drbd_conf *
 	cn_reply->id.idx = CN_IDX_DRBD;
 	cn_reply->id.val = CN_VAL_DRBD;
 
-	cn_reply->seq = atomic_add_return(1, &drbd_nl_seq);
+	cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq);
 	cn_reply->ack = 0; /* not used here. */
 	cn_reply->len = sizeof(struct drbd_nl_cfg_reply) +
 		(int)((char *)tl - (char *)reply->tag_list);
@@ -2462,7 +2462,7 @@ void drbd_bcast_ev_helper(struct drbd_co
 	cn_reply->id.idx = CN_IDX_DRBD;
 	cn_reply->id.val = CN_VAL_DRBD;
 
-	cn_reply->seq = atomic_add_return(1, &drbd_nl_seq);
+	cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq);
 	cn_reply->ack = 0; /* not used here. */
 	cn_reply->len = sizeof(struct drbd_nl_cfg_reply) +
 		(int)((char *)tl - (char *)reply->tag_list);
@@ -2540,7 +2540,7 @@ void drbd_bcast_ee(struct drbd_conf *mde
 	cn_reply->id.idx = CN_IDX_DRBD;
 	cn_reply->id.val = CN_VAL_DRBD;
 
-	cn_reply->seq = atomic_add_return(1,&drbd_nl_seq);
+	cn_reply->seq = atomic_add_return_unchecked(1,&drbd_nl_seq);
 	cn_reply->ack = 0; // not used here.
 	cn_reply->len = sizeof(struct drbd_nl_cfg_reply) +
 		(int)((char*)tl - (char*)reply->tag_list);
@@ -2579,7 +2579,7 @@ void drbd_bcast_sync_progress(struct drb
 	cn_reply->id.idx = CN_IDX_DRBD;
 	cn_reply->id.val = CN_VAL_DRBD;
 
-	cn_reply->seq = atomic_add_return(1, &drbd_nl_seq);
+	cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq);
 	cn_reply->ack = 0; /* not used here. */
 	cn_reply->len = sizeof(struct drbd_nl_cfg_reply) +
 		(int)((char *)tl - (char *)reply->tag_list);
diff -NurpP --minimal linux-3.2.22/drivers/block/drbd/drbd_receiver.c linux-3.2.22-g-v/drivers/block/drbd/drbd_receiver.c
--- linux-3.2.22/drivers/block/drbd/drbd_receiver.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/drbd/drbd_receiver.c	2012-07-11 20:20:37.203976706 +0200
@@ -894,7 +894,7 @@ retry:
 	sock->sk->sk_sndtimeo = mdev->net_conf->timeout*HZ/10;
 	sock->sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT;
 
-	atomic_set(&mdev->packet_seq, 0);
+	atomic_set_unchecked(&mdev->packet_seq, 0);
 	mdev->peer_seq = 0;
 
 	drbd_thread_start(&mdev->asender);
@@ -985,7 +985,7 @@ static enum finish_epoch drbd_may_finish
 	do {
 		next_epoch = NULL;
 
-		epoch_size = atomic_read(&epoch->epoch_size);
+		epoch_size = atomic_read_unchecked(&epoch->epoch_size);
 
 		switch (ev & ~EV_CLEANUP) {
 		case EV_PUT:
@@ -1020,7 +1020,7 @@ static enum finish_epoch drbd_may_finish
 					rv = FE_DESTROYED;
 			} else {
 				epoch->flags = 0;
-				atomic_set(&epoch->epoch_size, 0);
+				atomic_set_unchecked(&epoch->epoch_size, 0);
 				/* atomic_set(&epoch->active, 0); is already zero */
 				if (rv == FE_STILL_LIVE)
 					rv = FE_RECYCLED;
@@ -1191,14 +1191,14 @@ static int receive_Barrier(struct drbd_c
 		drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
 		drbd_flush(mdev);
 
-		if (atomic_read(&mdev->current_epoch->epoch_size)) {
+		if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) {
 			epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO);
 			if (epoch)
 				break;
 		}
 
 		epoch = mdev->current_epoch;
-		wait_event(mdev->ee_wait, atomic_read(&epoch->epoch_size) == 0);
+		wait_event(mdev->ee_wait, atomic_read_unchecked(&epoch->epoch_size) == 0);
 
 		D_ASSERT(atomic_read(&epoch->active) == 0);
 		D_ASSERT(epoch->flags == 0);
@@ -1210,11 +1210,11 @@ static int receive_Barrier(struct drbd_c
 	}
 
 	epoch->flags = 0;
-	atomic_set(&epoch->epoch_size, 0);
+	atomic_set_unchecked(&epoch->epoch_size, 0);
 	atomic_set(&epoch->active, 0);
 
 	spin_lock(&mdev->epoch_lock);
-	if (atomic_read(&mdev->current_epoch->epoch_size)) {
+	if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) {
 		list_add(&epoch->list, &mdev->current_epoch->list);
 		mdev->current_epoch = epoch;
 		mdev->epochs++;
@@ -1663,7 +1663,7 @@ static int receive_Data(struct drbd_conf
 		spin_unlock(&mdev->peer_seq_lock);
 
 		drbd_send_ack_dp(mdev, P_NEG_ACK, p, data_size);
-		atomic_inc(&mdev->current_epoch->epoch_size);
+		atomic_inc_unchecked(&mdev->current_epoch->epoch_size);
 		return drbd_drain_block(mdev, data_size);
 	}
 
@@ -1689,7 +1689,7 @@ static int receive_Data(struct drbd_conf
 
 	spin_lock(&mdev->epoch_lock);
 	e->epoch = mdev->current_epoch;
-	atomic_inc(&e->epoch->epoch_size);
+	atomic_inc_unchecked(&e->epoch->epoch_size);
 	atomic_inc(&e->epoch->active);
 	spin_unlock(&mdev->epoch_lock);
 
@@ -3885,7 +3885,7 @@ static void drbd_disconnect(struct drbd_
 	D_ASSERT(list_empty(&mdev->done_ee));
 
 	/* ok, no more ee's on the fly, it is safe to reset the epoch_size */
-	atomic_set(&mdev->current_epoch->epoch_size, 0);
+	atomic_set_unchecked(&mdev->current_epoch->epoch_size, 0);
 	D_ASSERT(list_empty(&mdev->current_epoch->list));
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/block/Kconfig linux-3.2.22-g-v/drivers/block/Kconfig
--- linux-3.2.22/drivers/block/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/Kconfig	2012-07-11 20:20:45.340782851 +0200
@@ -288,6 +288,13 @@ config BLK_DEV_CRYPTOLOOP
 
 source "drivers/block/drbd/Kconfig"
 
+config BLK_DEV_VROOT
+	tristate "Virtual Root device support"
+	depends on QUOTACTL
+	---help---
+	  Saying Y here will allow you to use quota/fs ioctls on a shared
+	  partition within a virtual server without compromising security.
+
 config BLK_DEV_NBD
 	tristate "Network block device support"
 	depends on NET
diff -NurpP --minimal linux-3.2.22/drivers/block/loop.c linux-3.2.22-g-v/drivers/block/loop.c
--- linux-3.2.22/drivers/block/loop.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/loop.c	2012-07-11 20:20:45.340782851 +0200
@@ -77,6 +77,7 @@
 #include <linux/sysfs.h>
 #include <linux/miscdevice.h>
 #include <linux/falloc.h>
+#include <linux/vs_context.h>
 
 #include <asm/uaccess.h>
 
@@ -227,7 +228,7 @@ static int __do_lo_send_write(struct fil
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(get_ds());
-	bw = file->f_op->write(file, buf, len, &pos);
+	bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos);
 	set_fs(old_fs);
 	if (likely(bw == len))
 		return 0;
@@ -868,6 +869,7 @@ static int loop_set_fd(struct loop_devic
 	lo->lo_blocksize = lo_blocksize;
 	lo->lo_device = bdev;
 	lo->lo_flags = lo_flags;
+	lo->lo_xid = vx_current_xid();
 	lo->lo_backing_file = file;
 	lo->transfer = transfer_none;
 	lo->ioctl = NULL;
@@ -1000,6 +1002,7 @@ static int loop_clr_fd(struct loop_devic
 	lo->lo_sizelimit = 0;
 	lo->lo_encrypt_key_size = 0;
 	lo->lo_thread = NULL;
+	lo->lo_xid = 0;
 	memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE);
 	memset(lo->lo_crypt_name, 0, LO_NAME_SIZE);
 	memset(lo->lo_file_name, 0, LO_NAME_SIZE);
@@ -1041,7 +1044,7 @@ loop_set_status(struct loop_device *lo, 
 
 	if (lo->lo_encrypt_key_size &&
 	    lo->lo_key_owner != uid &&
-	    !capable(CAP_SYS_ADMIN))
+	    !vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP))
 		return -EPERM;
 	if (lo->lo_state != Lo_bound)
 		return -ENXIO;
@@ -1131,7 +1134,8 @@ loop_get_status(struct loop_device *lo, 
 	memcpy(info->lo_crypt_name, lo->lo_crypt_name, LO_NAME_SIZE);
 	info->lo_encrypt_type =
 		lo->lo_encryption ? lo->lo_encryption->number : 0;
-	if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) {
+	if (lo->lo_encrypt_key_size &&
+		vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP)) {
 		info->lo_encrypt_key_size = lo->lo_encrypt_key_size;
 		memcpy(info->lo_encrypt_key, lo->lo_encrypt_key,
 		       lo->lo_encrypt_key_size);
@@ -1491,6 +1495,11 @@ static int lo_open(struct block_device *
 		goto out;
 	}
 
+	if (!vx_check(lo->lo_xid, VS_IDENT|VS_HOSTID|VS_ADMIN_P)) {
+		err = -EACCES;
+		goto out;
+	}
+
 	mutex_lock(&lo->lo_ctl_mutex);
 	lo->lo_refcnt++;
 	mutex_unlock(&lo->lo_ctl_mutex);
diff -NurpP --minimal linux-3.2.22/drivers/block/Makefile linux-3.2.22-g-v/drivers/block/Makefile
--- linux-3.2.22/drivers/block/Makefile	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/block/Makefile	2012-07-11 20:20:45.340782851 +0200
@@ -34,6 +34,7 @@ obj-$(CONFIG_VIODASD)		+= viodasd.o
 obj-$(CONFIG_BLK_DEV_SX8)	+= sx8.o
 obj-$(CONFIG_BLK_DEV_UB)	+= ub.o
 obj-$(CONFIG_BLK_DEV_HD)	+= hd.o
+obj-$(CONFIG_BLK_DEV_VROOT)	+= vroot.o
 
 obj-$(CONFIG_XEN_BLKDEV_FRONTEND)	+= xen-blkfront.o
 obj-$(CONFIG_XEN_BLKDEV_BACKEND)	+= xen-blkback/
diff -NurpP --minimal linux-3.2.22/drivers/block/vroot.c linux-3.2.22-g-v/drivers/block/vroot.c
--- linux-3.2.22/drivers/block/vroot.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-3.2.22-g-v/drivers/block/vroot.c	2012-07-11 20:20:45.340782851 +0200
@@ -0,0 +1,291 @@
+/*
+ *  linux/drivers/block/vroot.c
+ *
+ *  written by Herbert Pötzl, 9/11/2002
+ *  ported to 2.6.10 by Herbert Pötzl, 30/12/2004
+ *
+ *  based on the loop.c code by Theodore Ts'o.
+ *
+ * Copyright (C) 2002-2007 by Herbert Pötzl.
+ * Redistribution of this file is permitted under the
+ * GNU General Public License.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/file.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/slab.h>
+
+#include <linux/vroot.h>
+#include <linux/vs_context.h>
+
+
+static int max_vroot = 8;
+
+static struct vroot_device *vroot_dev;
+static struct gendisk **disks;
+
+
+static int vroot_set_dev(
+	struct vroot_device *vr,
+	struct block_device *bdev,
+	unsigned int arg)
+{
+	struct block_device *real_bdev;
+	struct file *file;
+	struct inode *inode;
+	int error;
+
+	error = -EBUSY;
+	if (vr->vr_state != Vr_unbound)
+		goto out;
+
+	error = -EBADF;
+	file = fget(arg);
+	if (!file)
+		goto out;
+
+	error = -EINVAL;
+	inode = file->f_dentry->d_inode;
+
+
+	if (S_ISBLK(inode->i_mode)) {
+		real_bdev = inode->i_bdev;
+		vr->vr_device = real_bdev;
+		__iget(real_bdev->bd_inode);
+	} else
+		goto out_fput;
+
+	vxdprintk(VXD_CBIT(misc, 0),
+		"vroot[%d]_set_dev: dev=" VXF_DEV,
+		vr->vr_number, VXD_DEV(real_bdev));
+
+	vr->vr_state = Vr_bound;
+	error = 0;
+
+ out_fput:
+	fput(file);
+ out:
+	return error;
+}
+
+static int vroot_clr_dev(
+	struct vroot_device *vr,
+	struct block_device *bdev)
+{
+	struct block_device *real_bdev;
+
+	if (vr->vr_state != Vr_bound)
+		return -ENXIO;
+	if (vr->vr_refcnt > 1)	/* we needed one fd for the ioctl */
+		return -EBUSY;
+
+	real_bdev = vr->vr_device;
+
+	vxdprintk(VXD_CBIT(misc, 0),
+		"vroot[%d]_clr_dev: dev=" VXF_DEV,
+		vr->vr_number, VXD_DEV(real_bdev));
+
+	bdput(real_bdev);
+	vr->vr_state = Vr_unbound;
+	vr->vr_device = NULL;
+	return 0;
+}
+
+
+static int vr_ioctl(struct block_device *bdev, fmode_t mode,
+	unsigned int cmd, unsigned long arg)
+{
+	struct vroot_device *vr = bdev->bd_disk->private_data;
+	int err;
+
+	down(&vr->vr_ctl_mutex);
+	switch (cmd) {
+	case VROOT_SET_DEV:
+		err = vroot_set_dev(vr, bdev, arg);
+		break;
+	case VROOT_CLR_DEV:
+		err = vroot_clr_dev(vr, bdev);
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+	up(&vr->vr_ctl_mutex);
+	return err;
+}
+
+static int vr_open(struct block_device *bdev, fmode_t mode)
+{
+	struct vroot_device *vr = bdev->bd_disk->private_data;
+
+	down(&vr->vr_ctl_mutex);
+	vr->vr_refcnt++;
+	up(&vr->vr_ctl_mutex);
+	return 0;
+}
+
+static int vr_release(struct gendisk *disk, fmode_t mode)
+{
+	struct vroot_device *vr = disk->private_data;
+
+	down(&vr->vr_ctl_mutex);
+	--vr->vr_refcnt;
+	up(&vr->vr_ctl_mutex);
+	return 0;
+}
+
+static struct block_device_operations vr_fops = {
+	.owner =	THIS_MODULE,
+	.open =		vr_open,
+	.release =	vr_release,
+	.ioctl =	vr_ioctl,
+};
+
+static void vroot_make_request(struct request_queue *q, struct bio *bio)
+{
+	printk("vroot_make_request %p, %p\n", q, bio);
+	bio_io_error(bio);
+}
+
+struct block_device *__vroot_get_real_bdev(struct block_device *bdev)
+{
+	struct inode *inode = bdev->bd_inode;
+	struct vroot_device *vr;
+	struct block_device *real_bdev;
+	int minor = iminor(inode);
+
+	vr = &vroot_dev[minor];
+	real_bdev = vr->vr_device;
+
+	vxdprintk(VXD_CBIT(misc, 0),
+		"vroot[%d]_get_real_bdev: dev=" VXF_DEV,
+		vr->vr_number, VXD_DEV(real_bdev));
+
+	if (vr->vr_state != Vr_bound)
+		return ERR_PTR(-ENXIO);
+
+	__iget(real_bdev->bd_inode);
+	return real_bdev;
+}
+
+
+
+/*
+ * And now the modules code and kernel interface.
+ */
+
+module_param(max_vroot, int, 0);
+
+MODULE_PARM_DESC(max_vroot, "Maximum number of vroot devices (1-256)");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_BLOCKDEV_MAJOR(VROOT_MAJOR);
+
+MODULE_AUTHOR ("Herbert Pötzl");
+MODULE_DESCRIPTION ("Virtual Root Device Mapper");
+
+
+int __init vroot_init(void)
+{
+	int err, i;
+
+	if (max_vroot < 1 || max_vroot > 256) {
+		max_vroot = MAX_VROOT_DEFAULT;
+		printk(KERN_WARNING "vroot: invalid max_vroot "
+			"(must be between 1 and 256), "
+			"using default (%d)\n", max_vroot);
+	}
+
+	if (register_blkdev(VROOT_MAJOR, "vroot"))
+		return -EIO;
+
+	err = -ENOMEM;
+	vroot_dev = kmalloc(max_vroot * sizeof(struct vroot_device), GFP_KERNEL);
+	if (!vroot_dev)
+		goto out_mem1;
+	memset(vroot_dev, 0, max_vroot * sizeof(struct vroot_device));
+
+	disks = kmalloc(max_vroot * sizeof(struct gendisk *), GFP_KERNEL);
+	if (!disks)
+		goto out_mem2;
+
+	for (i = 0; i < max_vroot; i++) {
+		disks[i] = alloc_disk(1);
+		if (!disks[i])
+			goto out_mem3;
+		disks[i]->queue = blk_alloc_queue(GFP_KERNEL);
+		if (!disks[i]->queue)
+			goto out_mem3;
+		blk_queue_make_request(disks[i]->queue, vroot_make_request);
+	}
+
+	for (i = 0; i < max_vroot; i++) {
+		struct vroot_device *vr = &vroot_dev[i];
+		struct gendisk *disk = disks[i];
+
+		memset(vr, 0, sizeof(*vr));
+		sema_init(&vr->vr_ctl_mutex, 1);
+		vr->vr_number = i;
+		disk->major = VROOT_MAJOR;
+		disk->first_minor = i;
+		disk->fops = &vr_fops;
+		sprintf(disk->disk_name, "vroot%d", i);
+		disk->private_data = vr;
+	}
+
+	err = register_vroot_grb(&__vroot_get_real_bdev);
+	if (err)
+		goto out_mem3;
+
+	for (i = 0; i < max_vroot; i++)
+		add_disk(disks[i]);
+	printk(KERN_INFO "vroot: loaded (max %d devices)\n", max_vroot);
+	return 0;
+
+out_mem3:
+	while (i--)
+		put_disk(disks[i]);
+	kfree(disks);
+out_mem2:
+	kfree(vroot_dev);
+out_mem1:
+	unregister_blkdev(VROOT_MAJOR, "vroot");
+	printk(KERN_ERR "vroot: ran out of memory\n");
+	return err;
+}
+
+void vroot_exit(void)
+{
+	int i;
+
+	if (unregister_vroot_grb(&__vroot_get_real_bdev))
+		printk(KERN_WARNING "vroot: cannot unregister grb\n");
+
+	for (i = 0; i < max_vroot; i++) {
+		del_gendisk(disks[i]);
+		put_disk(disks[i]);
+	}
+	unregister_blkdev(VROOT_MAJOR, "vroot");
+
+	kfree(disks);
+	kfree(vroot_dev);
+}
+
+module_init(vroot_init);
+module_exit(vroot_exit);
+
+#ifndef MODULE
+
+static int __init max_vroot_setup(char *str)
+{
+	max_vroot = simple_strtol(str, NULL, 0);
+	return 1;
+}
+
+__setup("max_vroot=", max_vroot_setup);
+
+#endif
+
diff -NurpP --minimal linux-3.2.22/drivers/char/agp/frontend.c linux-3.2.22-g-v/drivers/char/agp/frontend.c
--- linux-3.2.22/drivers/char/agp/frontend.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/agp/frontend.c	2012-07-11 20:20:37.207313636 +0200
@@ -817,7 +817,7 @@ static int agpioc_reserve_wrap(struct ag
 	if (copy_from_user(&reserve, arg, sizeof(struct agp_region)))
 		return -EFAULT;
 
-	if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment))
+	if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv))
 		return -EFAULT;
 
 	client = agp_find_client_by_pid(reserve.pid);
diff -NurpP --minimal linux-3.2.22/drivers/char/briq_panel.c linux-3.2.22-g-v/drivers/char/briq_panel.c
--- linux-3.2.22/drivers/char/briq_panel.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/briq_panel.c	2012-07-11 20:20:37.207313636 +0200
@@ -9,6 +9,7 @@
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
+#include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/kernel.h>
 #include <linux/wait.h>
@@ -34,6 +35,7 @@ static int		vfd_is_open;
 static unsigned char	vfd[40];
 static int		vfd_cursor;
 static unsigned char	ledpb, led;
+static DEFINE_MUTEX(vfd_mutex);
 
 static void update_vfd(void)
 {
@@ -140,12 +142,15 @@ static ssize_t briq_panel_write(struct f
 	if (!vfd_is_open)
 		return -EBUSY;
 
+	mutex_lock(&vfd_mutex);
 	for (;;) {
 		char c;
 		if (!indx)
 			break;
-		if (get_user(c, buf))
+		if (get_user(c, buf)) {
+			mutex_unlock(&vfd_mutex);
 			return -EFAULT;
+		}
 		if (esc) {
 			set_led(c);
 			esc = 0;
@@ -175,6 +180,7 @@ static ssize_t briq_panel_write(struct f
 		buf++;
 	}
 	update_vfd();
+	mutex_unlock(&vfd_mutex);
 
 	return len;
 }
diff -NurpP --minimal linux-3.2.22/drivers/char/genrtc.c linux-3.2.22-g-v/drivers/char/genrtc.c
--- linux-3.2.22/drivers/char/genrtc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/genrtc.c	2012-07-11 20:20:37.207313636 +0200
@@ -273,6 +273,7 @@ static int gen_rtc_ioctl(struct file *fi
 	switch (cmd) {
 
 	case RTC_PLL_GET:
+	    memset(&pll, 0, sizeof(pll));
 	    if (get_rtc_pll(&pll))
 	 	    return -EINVAL;
 	    else
diff -NurpP --minimal linux-3.2.22/drivers/char/hpet.c linux-3.2.22-g-v/drivers/char/hpet.c
--- linux-3.2.22/drivers/char/hpet.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/hpet.c	2012-07-11 20:20:37.207313636 +0200
@@ -572,7 +572,7 @@ static inline unsigned long hpet_time_di
 }
 
 static int
-hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg,
+hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg,
 		  struct hpet_info *info)
 {
 	struct hpet_timer __iomem *timer;
diff -NurpP --minimal linux-3.2.22/drivers/char/ipmi/ipmi_msghandler.c linux-3.2.22-g-v/drivers/char/ipmi/ipmi_msghandler.c
--- linux-3.2.22/drivers/char/ipmi/ipmi_msghandler.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/ipmi/ipmi_msghandler.c	2012-07-11 20:20:37.210645269 +0200
@@ -415,7 +415,7 @@ struct ipmi_smi {
 	struct proc_dir_entry *proc_dir;
 	char                  proc_dir_name[10];
 
-	atomic_t stats[IPMI_NUM_STATS];
+	atomic_unchecked_t stats[IPMI_NUM_STATS];
 
 	/*
 	 * run_to_completion duplicate of smb_info, smi_info
@@ -448,9 +448,9 @@ static DEFINE_MUTEX(smi_watchers_mutex);
 
 
 #define ipmi_inc_stat(intf, stat) \
-	atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat])
+	atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])
 #define ipmi_get_stat(intf, stat) \
-	((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat]))
+	((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]))
 
 static int is_lan_addr(struct ipmi_addr *addr)
 {
@@ -2868,7 +2868,7 @@ int ipmi_register_smi(struct ipmi_smi_ha
 	INIT_LIST_HEAD(&intf->cmd_rcvrs);
 	init_waitqueue_head(&intf->waitq);
 	for (i = 0; i < IPMI_NUM_STATS; i++)
-		atomic_set(&intf->stats[i], 0);
+		atomic_set_unchecked(&intf->stats[i], 0);
 
 	intf->proc_dir = NULL;
 
diff -NurpP --minimal linux-3.2.22/drivers/char/ipmi/ipmi_si_intf.c linux-3.2.22-g-v/drivers/char/ipmi/ipmi_si_intf.c
--- linux-3.2.22/drivers/char/ipmi/ipmi_si_intf.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/ipmi/ipmi_si_intf.c	2012-07-11 20:20:37.213973690 +0200
@@ -277,7 +277,7 @@ struct smi_info {
 	unsigned char slave_addr;
 
 	/* Counters and things for the proc filesystem. */
-	atomic_t stats[SI_NUM_STATS];
+	atomic_unchecked_t stats[SI_NUM_STATS];
 
 	struct task_struct *thread;
 
@@ -286,9 +286,9 @@ struct smi_info {
 };
 
 #define smi_inc_stat(smi, stat) \
-	atomic_inc(&(smi)->stats[SI_STAT_ ## stat])
+	atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat])
 #define smi_get_stat(smi, stat) \
-	((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat]))
+	((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat]))
 
 #define SI_MAX_PARMS 4
 
@@ -3230,7 +3230,7 @@ static int try_smi_init(struct smi_info 
 	atomic_set(&new_smi->req_events, 0);
 	new_smi->run_to_completion = 0;
 	for (i = 0; i < SI_NUM_STATS; i++)
-		atomic_set(&new_smi->stats[i], 0);
+		atomic_set_unchecked(&new_smi->stats[i], 0);
 
 	new_smi->interrupt_disabled = 1;
 	atomic_set(&new_smi->stop_operation, 0);
diff -NurpP --minimal linux-3.2.22/drivers/char/Kconfig linux-3.2.22-g-v/drivers/char/Kconfig
--- linux-3.2.22/drivers/char/Kconfig	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/Kconfig	2012-07-11 20:20:37.203976706 +0200
@@ -8,7 +8,8 @@ source "drivers/tty/Kconfig"
 
 config DEVKMEM
 	bool "/dev/kmem virtual device support"
-	default y
+	default n
+	depends on !GRKERNSEC_KMEM
 	help
 	  Say Y here if you want to support the /dev/kmem device. The
 	  /dev/kmem device is rarely used, but can be used for certain
@@ -596,6 +597,7 @@ config DEVPORT
 	bool
 	depends on !M68K
 	depends on ISA || PCI
+	depends on !GRKERNSEC_KMEM
 	default y
 
 source "drivers/s390/char/Kconfig"
diff -NurpP --minimal linux-3.2.22/drivers/char/mbcs.c linux-3.2.22-g-v/drivers/char/mbcs.c
--- linux-3.2.22/drivers/char/mbcs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/mbcs.c	2012-07-11 20:20:37.213973690 +0200
@@ -800,7 +800,7 @@ static int mbcs_remove(struct cx_dev *de
 	return 0;
 }
 
-static const struct cx_device_id __devinitdata mbcs_id_table[] = {
+static const struct cx_device_id __devinitconst mbcs_id_table[] = {
 	{
 	 .part_num = MBCS_PART_NUM,
 	 .mfg_num = MBCS_MFG_NUM,
diff -NurpP --minimal linux-3.2.22/drivers/char/mem.c linux-3.2.22-g-v/drivers/char/mem.c
--- linux-3.2.22/drivers/char/mem.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/mem.c	2012-07-11 20:20:37.213973690 +0200
@@ -18,6 +18,7 @@
 #include <linux/raw.h>
 #include <linux/tty.h>
 #include <linux/capability.h>
+#include <linux/security.h>
 #include <linux/ptrace.h>
 #include <linux/device.h>
 #include <linux/highmem.h>
@@ -35,6 +36,10 @@
 # include <linux/efi.h>
 #endif
 
+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
+extern const struct file_operations grsec_fops;
+#endif
+
 static inline unsigned long size_inside_page(unsigned long start,
 					     unsigned long size)
 {
@@ -66,9 +71,13 @@ static inline int range_is_allowed(unsig
 
 	while (cursor < to) {
 		if (!devmem_is_allowed(pfn)) {
+#ifdef CONFIG_GRKERNSEC_KMEM
+			gr_handle_mem_readwrite(from, to);
+#else
 			printk(KERN_INFO
 		"Program %s tried to access /dev/mem between %Lx->%Lx.\n",
 				current->comm, from, to);
+#endif
 			return 0;
 		}
 		cursor += PAGE_SIZE;
@@ -76,6 +85,11 @@ static inline int range_is_allowed(unsig
 	}
 	return 1;
 }
+#elif defined(CONFIG_GRKERNSEC_KMEM)
+static inline int range_is_allowed(unsigned long pfn, unsigned long size)
+{
+	return 0;
+}
 #else
 static inline int range_is_allowed(unsigned long pfn, unsigned long size)
 {
@@ -118,6 +132,7 @@ static ssize_t read_mem(struct file *fil
 
 	while (count > 0) {
 		unsigned long remaining;
+		char *temp;
 
 		sz = size_inside_page(p, count);
 
@@ -133,7 +148,23 @@ static ssize_t read_mem(struct file *fil
 		if (!ptr)
 			return -EFAULT;
 
-		remaining = copy_to_user(buf, ptr, sz);
+#ifdef CONFIG_PAX_USERCOPY
+		temp = kmalloc(sz, GFP_KERNEL);
+		if (!temp) {
+			unxlate_dev_mem_ptr(p, ptr);
+			return -ENOMEM;
+		}
+		memcpy(temp, ptr, sz);
+#else
+		temp = ptr;
+#endif
+
+		remaining = copy_to_user(buf, temp, sz);
+
+#ifdef CONFIG_PAX_USERCOPY
+		kfree(temp);
+#endif
+
 		unxlate_dev_mem_ptr(p, ptr);
 		if (remaining)
 			return -EFAULT;
@@ -396,9 +427,8 @@ static ssize_t read_kmem(struct file *fi
 			 size_t count, loff_t *ppos)
 {
 	unsigned long p = *ppos;
-	ssize_t low_count, read, sz;
+	ssize_t low_count, read, sz, err = 0;
 	char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
-	int err = 0;
 
 	read = 0;
 	if (p < (unsigned long) high_memory) {
@@ -420,6 +450,8 @@ static ssize_t read_kmem(struct file *fi
 		}
 #endif
 		while (low_count > 0) {
+			char *temp;
+
 			sz = size_inside_page(p, low_count);
 
 			/*
@@ -429,7 +461,22 @@ static ssize_t read_kmem(struct file *fi
 			 */
 			kbuf = xlate_dev_kmem_ptr((char *)p);
 
-			if (copy_to_user(buf, kbuf, sz))
+#ifdef CONFIG_PAX_USERCOPY
+			temp = kmalloc(sz, GFP_KERNEL);
+			if (!temp)
+				return -ENOMEM;
+			memcpy(temp, kbuf, sz);
+#else
+			temp = kbuf;
+#endif
+
+			err = copy_to_user(buf, temp, sz);
+
+#ifdef CONFIG_PAX_USERCOPY
+			kfree(temp);
+#endif
+
+			if (err)
 				return -EFAULT;
 			buf += sz;
 			p += sz;
@@ -867,6 +914,9 @@ static const struct memdev {
 #ifdef CONFIG_CRASH_DUMP
 	[12] = { "oldmem", 0, &oldmem_fops, NULL },
 #endif
+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
+	[13] = { "grsec",S_IRUSR | S_IWUGO, &grsec_fops, NULL },
+#endif
 };
 
 static int memory_open(struct inode *inode, struct file *filp)
diff -NurpP --minimal linux-3.2.22/drivers/char/nvram.c linux-3.2.22-g-v/drivers/char/nvram.c
--- linux-3.2.22/drivers/char/nvram.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/nvram.c	2012-07-11 20:20:37.217310089 +0200
@@ -248,7 +248,7 @@ static ssize_t nvram_read(struct file *f
 
 	spin_unlock_irq(&rtc_lock);
 
-	if (copy_to_user(buf, contents, tmp - contents))
+	if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents))
 		return -EFAULT;
 
 	*ppos = i;
diff -NurpP --minimal linux-3.2.22/drivers/char/random.c linux-3.2.22-g-v/drivers/char/random.c
--- linux-3.2.22/drivers/char/random.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/random.c	2012-07-11 20:20:37.217310089 +0200
@@ -261,8 +261,13 @@
 /*
  * Configuration information
  */
+#ifdef CONFIG_GRKERNSEC_RANDNET
+#define INPUT_POOL_WORDS 512
+#define OUTPUT_POOL_WORDS 128
+#else
 #define INPUT_POOL_WORDS 128
 #define OUTPUT_POOL_WORDS 32
+#endif
 #define SEC_XFER_SIZE 512
 #define EXTRACT_SIZE 10
 
@@ -300,10 +305,17 @@ static struct poolinfo {
 	int poolwords;
 	int tap1, tap2, tap3, tap4, tap5;
 } poolinfo_table[] = {
+#ifdef CONFIG_GRKERNSEC_RANDNET
+	/* x^512 + x^411 + x^308 + x^208 +x^104 + x + 1 -- 225 */
+	{ 512,	411,	308,	208,	104,	1 },
+	/* x^128 + x^103 + x^76 + x^51 + x^25 + x + 1 -- 105 */
+	{ 128,	103,	76,	51,	25,	1 },
+#else
 	/* x^128 + x^103 + x^76 + x^51 +x^25 + x + 1 -- 105 */
 	{ 128,	103,	76,	51,	25,	1 },
 	/* x^32 + x^26 + x^20 + x^14 + x^7 + x + 1 -- 15 */
 	{ 32,	26,	20,	14,	7,	1 },
+#endif
 #if 0
 	/* x^2048 + x^1638 + x^1231 + x^819 + x^411 + x + 1  -- 115 */
 	{ 2048,	1638,	1231,	819,	411,	1 },
@@ -909,7 +921,7 @@ static ssize_t extract_entropy_user(stru
 
 		extract_buf(r, tmp);
 		i = min_t(int, nbytes, EXTRACT_SIZE);
-		if (copy_to_user(buf, tmp, i)) {
+		if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) {
 			ret = -EFAULT;
 			break;
 		}
@@ -1228,7 +1240,7 @@ EXPORT_SYMBOL(generate_random_uuid);
 #include <linux/sysctl.h>
 
 static int min_read_thresh = 8, min_write_thresh;
-static int max_read_thresh = INPUT_POOL_WORDS * 32;
+static int max_read_thresh = OUTPUT_POOL_WORDS * 32;
 static int max_write_thresh = INPUT_POOL_WORDS * 32;
 static char sysctl_bootid[16];
 
@@ -1250,10 +1262,15 @@ static int proc_do_uuid(ctl_table *table
 	uuid = table->data;
 	if (!uuid) {
 		uuid = tmp_uuid;
-		uuid[8] = 0;
-	}
-	if (uuid[8] == 0)
 		generate_random_uuid(uuid);
+	} else {
+		static DEFINE_SPINLOCK(bootid_spinlock);
+
+		spin_lock(&bootid_spinlock);
+		if (!uuid[8])
+			generate_random_uuid(uuid);
+		spin_unlock(&bootid_spinlock);
+	}
 
 	sprintf(buf, "%pU", uuid);
 
diff -NurpP --minimal linux-3.2.22/drivers/char/sonypi.c linux-3.2.22-g-v/drivers/char/sonypi.c
--- linux-3.2.22/drivers/char/sonypi.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/sonypi.c	2012-07-11 20:20:37.217310089 +0200
@@ -55,6 +55,7 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/system.h>
+#include <asm/local.h>
 
 #include <linux/sonypi.h>
 
@@ -491,7 +492,7 @@ static struct sonypi_device {
 	spinlock_t fifo_lock;
 	wait_queue_head_t fifo_proc_list;
 	struct fasync_struct *fifo_async;
-	int open_count;
+	local_t open_count;
 	int model;
 	struct input_dev *input_jog_dev;
 	struct input_dev *input_key_dev;
@@ -898,7 +899,7 @@ static int sonypi_misc_fasync(int fd, st
 static int sonypi_misc_release(struct inode *inode, struct file *file)
 {
 	mutex_lock(&sonypi_device.lock);
-	sonypi_device.open_count--;
+	local_dec(&sonypi_device.open_count);
 	mutex_unlock(&sonypi_device.lock);
 	return 0;
 }
@@ -907,9 +908,9 @@ static int sonypi_misc_open(struct inode
 {
 	mutex_lock(&sonypi_device.lock);
 	/* Flush input queue on first open */
-	if (!sonypi_device.open_count)
+	if (!local_read(&sonypi_device.open_count))
 		kfifo_reset(&sonypi_device.fifo);
-	sonypi_device.open_count++;
+	local_inc(&sonypi_device.open_count);
 	mutex_unlock(&sonypi_device.lock);
 
 	return 0;
diff -NurpP --minimal linux-3.2.22/drivers/char/tpm/tpm_bios.c linux-3.2.22-g-v/drivers/char/tpm/tpm_bios.c
--- linux-3.2.22/drivers/char/tpm/tpm_bios.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/tpm/tpm_bios.c	2012-07-11 20:20:37.220641316 +0200
@@ -173,7 +173,7 @@ static void *tpm_bios_measurements_start
 	event = addr;
 
 	if ((event->event_type == 0 && event->event_size == 0) ||
-	    ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit))
+	    (event->event_size >= limit - addr - sizeof(struct tcpa_event)))
 		return NULL;
 
 	return addr;
@@ -198,7 +198,7 @@ static void *tpm_bios_measurements_next(
 		return NULL;
 
 	if ((event->event_type == 0 && event->event_size == 0) ||
-	    ((v + sizeof(struct tcpa_event) + event->event_size) >= limit))
+	    (event->event_size >= limit - v - sizeof(struct tcpa_event)))
 		return NULL;
 
 	(*pos)++;
@@ -291,7 +291,8 @@ static int tpm_binary_bios_measurements_
 	int i;
 
 	for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++)
-		seq_putc(m, data[i]);
+		if (!seq_putc(m, data[i]))
+			return -EFAULT;
 
 	return 0;
 }
@@ -410,8 +411,13 @@ static int read_log(struct tpm_bios_log 
 	log->bios_event_log_end = log->bios_event_log + len;
 
 	virt = acpi_os_map_memory(start, len);
+	if (!virt) {
+		kfree(log->bios_event_log);
+		log->bios_event_log = NULL;
+		return -EFAULT;
+	}
 
-	memcpy(log->bios_event_log, virt, len);
+	memcpy(log->bios_event_log, (const char __force_kernel *)virt, len);
 
 	acpi_os_unmap_memory(virt, len);
 	return 0;
diff -NurpP --minimal linux-3.2.22/drivers/char/tpm/tpm.c linux-3.2.22-g-v/drivers/char/tpm/tpm.c
--- linux-3.2.22/drivers/char/tpm/tpm.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/tpm/tpm.c	2012-07-11 20:20:37.220641316 +0200
@@ -414,7 +414,7 @@ static ssize_t tpm_transmit(struct tpm_c
 		    chip->vendor.req_complete_val)
 			goto out_recv;
 
-		if ((status == chip->vendor.req_canceled)) {
+		if (status == chip->vendor.req_canceled) {
 			dev_err(chip->dev, "Operation Canceled\n");
 			rc = -ECANCELED;
 			goto out;
diff -NurpP --minimal linux-3.2.22/drivers/char/virtio_console.c linux-3.2.22-g-v/drivers/char/virtio_console.c
--- linux-3.2.22/drivers/char/virtio_console.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/char/virtio_console.c	2012-07-11 20:20:37.220641316 +0200
@@ -563,7 +563,7 @@ static ssize_t fill_readbuf(struct port 
 	if (to_user) {
 		ssize_t ret;
 
-		ret = copy_to_user(out_buf, buf->buf + buf->offset, out_count);
+		ret = copy_to_user((char __force_user *)out_buf, buf->buf + buf->offset, out_count);
 		if (ret)
 			return -EFAULT;
 	} else {
@@ -662,7 +662,7 @@ static ssize_t port_fops_read(struct fil
 	if (!port_has_data(port) && !port->host_connected)
 		return 0;
 
-	return fill_readbuf(port, ubuf, count, true);
+	return fill_readbuf(port, (char __force_kernel *)ubuf, count, true);
 }
 
 static ssize_t port_fops_write(struct file *filp, const char __user *ubuf,
diff -NurpP --minimal linux-3.2.22/drivers/dma/dmatest.c linux-3.2.22-g-v/drivers/dma/dmatest.c
--- linux-3.2.22/drivers/dma/dmatest.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/dma/dmatest.c	2012-07-11 20:20:37.220641316 +0200
@@ -591,7 +591,7 @@ static int dmatest_add_channel(struct dm
 	}
 	if (dma_has_cap(DMA_PQ, dma_dev->cap_mask)) {
 		cnt = dmatest_add_threads(dtc, DMA_PQ);
-		thread_count += cnt > 0 ?: 0;
+		thread_count += cnt > 0 ? cnt : 0;
 	}
 
 	pr_info("dmatest: Started %u threads using %s\n",
diff -NurpP --minimal linux-3.2.22/drivers/edac/amd64_edac.c linux-3.2.22-g-v/drivers/edac/amd64_edac.c
--- linux-3.2.22/drivers/edac/amd64_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/amd64_edac.c	2012-07-11 20:20:37.223977475 +0200
@@ -2685,7 +2685,7 @@ static void __devexit amd64_remove_one_i
  * PCI core identifies what devices are on a system during boot, and then
  * inquiry this table to see if this driver is for a given device found.
  */
-static const struct pci_device_id amd64_pci_table[] __devinitdata = {
+static const struct pci_device_id amd64_pci_table[] __devinitconst = {
 	{
 		.vendor		= PCI_VENDOR_ID_AMD,
 		.device		= PCI_DEVICE_ID_AMD_K8_NB_MEMCTL,
diff -NurpP --minimal linux-3.2.22/drivers/edac/amd76x_edac.c linux-3.2.22-g-v/drivers/edac/amd76x_edac.c
--- linux-3.2.22/drivers/edac/amd76x_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/amd76x_edac.c	2012-07-11 20:20:37.223977475 +0200
@@ -321,7 +321,7 @@ static void __devexit amd76x_remove_one(
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id amd76x_pci_tbl[] __devinitdata = {
+static const struct pci_device_id amd76x_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 AMD762},
diff -NurpP --minimal linux-3.2.22/drivers/edac/e752x_edac.c linux-3.2.22-g-v/drivers/edac/e752x_edac.c
--- linux-3.2.22/drivers/edac/e752x_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/e752x_edac.c	2012-07-11 20:20:37.223977475 +0200
@@ -1380,7 +1380,7 @@ static void __devexit e752x_remove_one(s
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id e752x_pci_tbl[] __devinitdata = {
+static const struct pci_device_id e752x_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 E7520},
diff -NurpP --minimal linux-3.2.22/drivers/edac/e7xxx_edac.c linux-3.2.22-g-v/drivers/edac/e7xxx_edac.c
--- linux-3.2.22/drivers/edac/e7xxx_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/e7xxx_edac.c	2012-07-11 20:20:37.227305337 +0200
@@ -525,7 +525,7 @@ static void __devexit e7xxx_remove_one(s
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id e7xxx_pci_tbl[] __devinitdata = {
+static const struct pci_device_id e7xxx_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 E7205},
diff -NurpP --minimal linux-3.2.22/drivers/edac/edac_pci_sysfs.c linux-3.2.22-g-v/drivers/edac/edac_pci_sysfs.c
--- linux-3.2.22/drivers/edac/edac_pci_sysfs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/edac_pci_sysfs.c	2012-07-11 20:20:37.227305337 +0200
@@ -26,8 +26,8 @@ static int edac_pci_log_pe = 1;		/* log 
 static int edac_pci_log_npe = 1;	/* log PCI non-parity error errors */
 static int edac_pci_poll_msec = 1000;	/* one second workq period */
 
-static atomic_t pci_parity_count = ATOMIC_INIT(0);
-static atomic_t pci_nonparity_count = ATOMIC_INIT(0);
+static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0);
+static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0);
 
 static struct kobject *edac_pci_top_main_kobj;
 static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0);
@@ -582,7 +582,7 @@ static void edac_pci_dev_parity_test(str
 			edac_printk(KERN_CRIT, EDAC_PCI,
 				"Signaled System Error on %s\n",
 				pci_name(dev));
-			atomic_inc(&pci_nonparity_count);
+			atomic_inc_unchecked(&pci_nonparity_count);
 		}
 
 		if (status & (PCI_STATUS_PARITY)) {
@@ -590,7 +590,7 @@ static void edac_pci_dev_parity_test(str
 				"Master Data Parity Error on %s\n",
 				pci_name(dev));
 
-			atomic_inc(&pci_parity_count);
+			atomic_inc_unchecked(&pci_parity_count);
 		}
 
 		if (status & (PCI_STATUS_DETECTED_PARITY)) {
@@ -598,7 +598,7 @@ static void edac_pci_dev_parity_test(str
 				"Detected Parity Error on %s\n",
 				pci_name(dev));
 
-			atomic_inc(&pci_parity_count);
+			atomic_inc_unchecked(&pci_parity_count);
 		}
 	}
 
@@ -619,7 +619,7 @@ static void edac_pci_dev_parity_test(str
 				edac_printk(KERN_CRIT, EDAC_PCI, "Bridge "
 					"Signaled System Error on %s\n",
 					pci_name(dev));
-				atomic_inc(&pci_nonparity_count);
+				atomic_inc_unchecked(&pci_nonparity_count);
 			}
 
 			if (status & (PCI_STATUS_PARITY)) {
@@ -627,7 +627,7 @@ static void edac_pci_dev_parity_test(str
 					"Master Data Parity Error on "
 					"%s\n", pci_name(dev));
 
-				atomic_inc(&pci_parity_count);
+				atomic_inc_unchecked(&pci_parity_count);
 			}
 
 			if (status & (PCI_STATUS_DETECTED_PARITY)) {
@@ -635,7 +635,7 @@ static void edac_pci_dev_parity_test(str
 					"Detected Parity Error on %s\n",
 					pci_name(dev));
 
-				atomic_inc(&pci_parity_count);
+				atomic_inc_unchecked(&pci_parity_count);
 			}
 		}
 	}
@@ -677,7 +677,7 @@ void edac_pci_do_parity_check(void)
 	if (!check_pci_errors)
 		return;
 
-	before_count = atomic_read(&pci_parity_count);
+	before_count = atomic_read_unchecked(&pci_parity_count);
 
 	/* scan all PCI devices looking for a Parity Error on devices and
 	 * bridges.
@@ -689,7 +689,7 @@ void edac_pci_do_parity_check(void)
 	/* Only if operator has selected panic on PCI Error */
 	if (edac_pci_get_panic_on_pe()) {
 		/* If the count is different 'after' from 'before' */
-		if (before_count != atomic_read(&pci_parity_count))
+		if (before_count != atomic_read_unchecked(&pci_parity_count))
 			panic("EDAC: PCI Parity Error");
 	}
 }
diff -NurpP --minimal linux-3.2.22/drivers/edac/i3000_edac.c linux-3.2.22-g-v/drivers/edac/i3000_edac.c
--- linux-3.2.22/drivers/edac/i3000_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i3000_edac.c	2012-07-11 20:20:37.227305337 +0200
@@ -470,7 +470,7 @@ static void __devexit i3000_remove_one(s
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i3000_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i3000_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, 3000_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 I3000},
diff -NurpP --minimal linux-3.2.22/drivers/edac/i3200_edac.c linux-3.2.22-g-v/drivers/edac/i3200_edac.c
--- linux-3.2.22/drivers/edac/i3200_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i3200_edac.c	2012-07-11 20:20:37.227305337 +0200
@@ -456,7 +456,7 @@ static void __devexit i3200_remove_one(s
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i3200_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i3200_pci_tbl[] __devinitconst = {
 	{
 		PCI_VEND_DEV(INTEL, 3200_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		I3200},
diff -NurpP --minimal linux-3.2.22/drivers/edac/i5000_edac.c linux-3.2.22-g-v/drivers/edac/i5000_edac.c
--- linux-3.2.22/drivers/edac/i5000_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i5000_edac.c	2012-07-11 20:20:37.230645334 +0200
@@ -1516,7 +1516,7 @@ static void __devexit i5000_remove_one(s
  *
  *	The "E500P" device is the first device supported.
  */
-static const struct pci_device_id i5000_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i5000_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I5000_DEV16),
 	 .driver_data = I5000P},
 
diff -NurpP --minimal linux-3.2.22/drivers/edac/i5100_edac.c linux-3.2.22-g-v/drivers/edac/i5100_edac.c
--- linux-3.2.22/drivers/edac/i5100_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i5100_edac.c	2012-07-11 20:20:37.230645334 +0200
@@ -1051,7 +1051,7 @@ static void __devexit i5100_remove_one(s
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i5100_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i5100_pci_tbl[] __devinitconst = {
 	/* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5100_16) },
 	{ 0, }
diff -NurpP --minimal linux-3.2.22/drivers/edac/i5400_edac.c linux-3.2.22-g-v/drivers/edac/i5400_edac.c
--- linux-3.2.22/drivers/edac/i5400_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i5400_edac.c	2012-07-11 20:20:37.230645334 +0200
@@ -1383,7 +1383,7 @@ static void __devexit i5400_remove_one(s
  *
  *	The "E500P" device is the first device supported.
  */
-static const struct pci_device_id i5400_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i5400_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR)},
 	{0,}			/* 0 terminated list. */
 };
diff -NurpP --minimal linux-3.2.22/drivers/edac/i7300_edac.c linux-3.2.22-g-v/drivers/edac/i7300_edac.c
--- linux-3.2.22/drivers/edac/i7300_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i7300_edac.c	2012-07-11 20:20:37.230645334 +0200
@@ -1192,7 +1192,7 @@ static void __devexit i7300_remove_one(s
  *
  * Has only 8086:360c PCI ID
  */
-static const struct pci_device_id i7300_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i7300_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I7300_MCH_ERR)},
 	{0,}			/* 0 terminated list. */
 };
diff -NurpP --minimal linux-3.2.22/drivers/edac/i7core_edac.c linux-3.2.22-g-v/drivers/edac/i7core_edac.c
--- linux-3.2.22/drivers/edac/i7core_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i7core_edac.c	2012-07-11 20:20:37.233971835 +0200
@@ -391,7 +391,7 @@ static const struct pci_id_table pci_dev
 /*
  *	pci_device_id	table for which devices we are looking for
  */
-static const struct pci_device_id i7core_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i7core_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_X58_HUB_MGMT)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LYNNFIELD_QPI_LINK0)},
 	{0,}			/* 0 terminated list. */
diff -NurpP --minimal linux-3.2.22/drivers/edac/i82443bxgx_edac.c linux-3.2.22-g-v/drivers/edac/i82443bxgx_edac.c
--- linux-3.2.22/drivers/edac/i82443bxgx_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i82443bxgx_edac.c	2012-07-11 20:20:37.233971835 +0200
@@ -380,7 +380,7 @@ static void __devexit i82443bxgx_edacmc_
 
 EXPORT_SYMBOL_GPL(i82443bxgx_edacmc_remove_one);
 
-static const struct pci_device_id i82443bxgx_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i82443bxgx_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0)},
diff -NurpP --minimal linux-3.2.22/drivers/edac/i82860_edac.c linux-3.2.22-g-v/drivers/edac/i82860_edac.c
--- linux-3.2.22/drivers/edac/i82860_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i82860_edac.c	2012-07-11 20:20:37.233971835 +0200
@@ -270,7 +270,7 @@ static void __devexit i82860_remove_one(
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i82860_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i82860_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, 82860_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 I82860},
diff -NurpP --minimal linux-3.2.22/drivers/edac/i82875p_edac.c linux-3.2.22-g-v/drivers/edac/i82875p_edac.c
--- linux-3.2.22/drivers/edac/i82875p_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i82875p_edac.c	2012-07-11 20:20:37.237311179 +0200
@@ -511,7 +511,7 @@ static void __devexit i82875p_remove_one
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i82875p_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 I82875P},
diff -NurpP --minimal linux-3.2.22/drivers/edac/i82975x_edac.c linux-3.2.22-g-v/drivers/edac/i82975x_edac.c
--- linux-3.2.22/drivers/edac/i82975x_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/i82975x_edac.c	2012-07-11 20:20:37.237311179 +0200
@@ -604,7 +604,7 @@ static void __devexit i82975x_remove_one
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id i82975x_pci_tbl[] __devinitdata = {
+static const struct pci_device_id i82975x_pci_tbl[] __devinitconst = {
 	{
 		PCI_VEND_DEV(INTEL, 82975_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		I82975X
diff -NurpP --minimal linux-3.2.22/drivers/edac/mce_amd.h linux-3.2.22-g-v/drivers/edac/mce_amd.h
--- linux-3.2.22/drivers/edac/mce_amd.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/mce_amd.h	2012-07-11 20:20:37.237311179 +0200
@@ -83,7 +83,7 @@ struct amd_decoder_ops {
 	bool (*dc_mce)(u16, u8);
 	bool (*ic_mce)(u16, u8);
 	bool (*nb_mce)(u16, u8);
-};
+} __no_const;
 
 void amd_report_gart_errors(bool);
 void amd_register_ecc_decoder(void (*f)(int, struct mce *));
diff -NurpP --minimal linux-3.2.22/drivers/edac/r82600_edac.c linux-3.2.22-g-v/drivers/edac/r82600_edac.c
--- linux-3.2.22/drivers/edac/r82600_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/r82600_edac.c	2012-07-11 20:20:37.237311179 +0200
@@ -373,7 +373,7 @@ static void __devexit r82600_remove_one(
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id r82600_pci_tbl[] __devinitdata = {
+static const struct pci_device_id r82600_pci_tbl[] __devinitconst = {
 	{
 	 PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID)
 	 },
diff -NurpP --minimal linux-3.2.22/drivers/edac/sb_edac.c linux-3.2.22-g-v/drivers/edac/sb_edac.c
--- linux-3.2.22/drivers/edac/sb_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/sb_edac.c	2012-07-11 20:20:37.237311179 +0200
@@ -367,7 +367,7 @@ static const struct pci_id_table pci_dev
 /*
  *	pci_device_id	table for which devices we are looking for
  */
-static const struct pci_device_id sbridge_pci_tbl[] __devinitdata = {
+static const struct pci_device_id sbridge_pci_tbl[] __devinitconst = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA)},
 	{0,}			/* 0 terminated list. */
 };
diff -NurpP --minimal linux-3.2.22/drivers/edac/x38_edac.c linux-3.2.22-g-v/drivers/edac/x38_edac.c
--- linux-3.2.22/drivers/edac/x38_edac.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/edac/x38_edac.c	2012-07-11 20:20:37.240641588 +0200
@@ -440,7 +440,7 @@ static void __devexit x38_remove_one(str
 	edac_mc_free(mci);
 }
 
-static const struct pci_device_id x38_pci_tbl[] __devinitdata = {
+static const struct pci_device_id x38_pci_tbl[] __devinitconst = {
 	{
 	 PCI_VEND_DEV(INTEL, X38_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	 X38},
diff -NurpP --minimal linux-3.2.22/drivers/firewire/core-card.c linux-3.2.22-g-v/drivers/firewire/core-card.c
--- linux-3.2.22/drivers/firewire/core-card.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/firewire/core-card.c	2012-07-11 20:20:37.240641588 +0200
@@ -657,7 +657,7 @@ void fw_card_release(struct kref *kref)
 
 void fw_core_remove_card(struct fw_card *card)
 {
-	struct fw_card_driver dummy_driver = dummy_driver_template;
+	fw_card_driver_no_const dummy_driver = dummy_driver_template;
 
 	card->driver->update_phy_reg(card, 4,
 				     PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
diff -NurpP --minimal linux-3.2.22/drivers/firewire/core-cdev.c linux-3.2.22-g-v/drivers/firewire/core-cdev.c
--- linux-3.2.22/drivers/firewire/core-cdev.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/firewire/core-cdev.c	2012-07-11 20:20:37.240641588 +0200
@@ -1331,8 +1331,7 @@ static int init_iso_resource(struct clie
 	int ret;
 
 	if ((request->channels == 0 && request->bandwidth == 0) ||
-	    request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL ||
-	    request->bandwidth < 0)
+	    request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL)
 		return -EINVAL;
 
 	r  = kmalloc(sizeof(*r), GFP_KERNEL);
diff -NurpP --minimal linux-3.2.22/drivers/firewire/core.h linux-3.2.22-g-v/drivers/firewire/core.h
--- linux-3.2.22/drivers/firewire/core.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/firewire/core.h	2012-07-11 20:20:37.243971874 +0200
@@ -101,6 +101,7 @@ struct fw_card_driver {
 
 	int (*stop_iso)(struct fw_iso_context *ctx);
 };
+typedef struct fw_card_driver __no_const fw_card_driver_no_const;
 
 void fw_card_initialize(struct fw_card *card,
 		const struct fw_card_driver *driver, struct device *device);
diff -NurpP --minimal linux-3.2.22/drivers/firewire/core-transaction.c linux-3.2.22-g-v/drivers/firewire/core-transaction.c
--- linux-3.2.22/drivers/firewire/core-transaction.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/firewire/core-transaction.c	2012-07-11 20:20:37.240641588 +0200
@@ -37,6 +37,7 @@
 #include <linux/timer.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
+#include <linux/sched.h>
 
 #include <asm/byteorder.h>
 
diff -NurpP --minimal linux-3.2.22/drivers/firmware/dmi_scan.c linux-3.2.22-g-v/drivers/firmware/dmi_scan.c
--- linux-3.2.22/drivers/firmware/dmi_scan.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/firmware/dmi_scan.c	2012-07-11 20:20:37.243971874 +0200
@@ -449,11 +449,6 @@ void __init dmi_scan_machine(void)
 		}
 	}
 	else {
-		/*
-		 * no iounmap() for that ioremap(); it would be a no-op, but
-		 * it's so early in setup that sucker gets confused into doing
-		 * what it shouldn't if we actually call it.
-		 */
 		p = dmi_ioremap(0xF0000, 0x10000);
 		if (p == NULL)
 			goto error;
@@ -723,7 +718,7 @@ int dmi_walk(void (*decode)(const struct
 	if (buf == NULL)
 		return -1;
 
-	dmi_table(buf, dmi_len, dmi_num, decode, private_data);
+	dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data);
 
 	iounmap(buf);
 	return 0;
diff -NurpP --minimal linux-3.2.22/drivers/gpio/gpio-vr41xx.c linux-3.2.22-g-v/drivers/gpio/gpio-vr41xx.c
--- linux-3.2.22/drivers/gpio/gpio-vr41xx.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpio/gpio-vr41xx.c	2012-07-11 20:20:37.243971874 +0200
@@ -204,7 +204,7 @@ static int giu_get_irq(unsigned int irq)
 	printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
 	       maskl, pendl, maskh, pendh);
 
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 
 	return -EINVAL;
 }
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_crtc.c linux-3.2.22-g-v/drivers/gpu/drm/drm_crtc.c
--- linux-3.2.22/drivers/gpu/drm/drm_crtc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_crtc.c	2012-07-11 20:20:37.247306365 +0200
@@ -1379,7 +1379,7 @@ int drm_mode_getconnector(struct drm_dev
 	 */
 	if ((out_resp->count_modes >= mode_count) && mode_count) {
 		copied = 0;
-		mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
+		mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
 		list_for_each_entry(mode, &connector->modes, head) {
 			drm_crtc_convert_to_umode(&u_mode, mode);
 			if (copy_to_user(mode_ptr + copied,
@@ -1394,8 +1394,8 @@ int drm_mode_getconnector(struct drm_dev
 
 	if ((out_resp->count_props >= props_count) && props_count) {
 		copied = 0;
-		prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
-		prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
+		prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
+		prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
 		for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
 			if (connector->property_ids[i] != 0) {
 				if (put_user(connector->property_ids[i],
@@ -1417,7 +1417,7 @@ int drm_mode_getconnector(struct drm_dev
 
 	if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
 		copied = 0;
-		encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
+		encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
 		for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 			if (connector->encoder_ids[i] != 0) {
 				if (put_user(connector->encoder_ids[i],
@@ -1576,7 +1576,7 @@ int drm_mode_setcrtc(struct drm_device *
 		}
 
 		for (i = 0; i < crtc_req->count_connectors; i++) {
-			set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
+			set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
 			if (get_user(out_id, &set_connectors_ptr[i])) {
 				ret = -EFAULT;
 				goto out;
@@ -1857,7 +1857,7 @@ int drm_mode_dirtyfb_ioctl(struct drm_de
 	fb = obj_to_fb(obj);
 
 	num_clips = r->num_clips;
-	clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
+	clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
 
 	if (!num_clips != !clips_ptr) {
 		ret = -EINVAL;
@@ -2283,7 +2283,7 @@ int drm_mode_getproperty_ioctl(struct dr
 	out_resp->flags = property->flags;
 
 	if ((out_resp->count_values >= value_count) && value_count) {
-		values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
+		values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
 		for (i = 0; i < value_count; i++) {
 			if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
 				ret = -EFAULT;
@@ -2296,7 +2296,7 @@ int drm_mode_getproperty_ioctl(struct dr
 	if (property->flags & DRM_MODE_PROP_ENUM) {
 		if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
 			copied = 0;
-			enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
+			enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
 			list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
 
 				if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
@@ -2319,7 +2319,7 @@ int drm_mode_getproperty_ioctl(struct dr
 		if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
 			copied = 0;
 			blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
-			blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
+			blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
 
 			list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
 				if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
@@ -2380,7 +2380,7 @@ int drm_mode_getblob_ioctl(struct drm_de
 	struct drm_mode_get_blob *out_resp = data;
 	struct drm_property_blob *blob;
 	int ret = 0;
-	void *blob_ptr;
+	void __user *blob_ptr;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -EINVAL;
@@ -2394,7 +2394,7 @@ int drm_mode_getblob_ioctl(struct drm_de
 	blob = obj_to_blob(obj);
 
 	if (out_resp->length == blob->length) {
-		blob_ptr = (void *)(unsigned long)out_resp->data;
+		blob_ptr = (void __user *)(unsigned long)out_resp->data;
 		if (copy_to_user(blob_ptr, blob->data, blob->length)){
 			ret = -EFAULT;
 			goto done;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_crtc_helper.c linux-3.2.22-g-v/drivers/gpu/drm/drm_crtc_helper.c
--- linux-3.2.22/drivers/gpu/drm/drm_crtc_helper.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_crtc_helper.c	2012-07-11 20:20:37.247306365 +0200
@@ -279,7 +279,7 @@ static bool drm_encoder_crtc_ok(struct d
 	struct drm_crtc *tmp;
 	int crtc_mask = 1;
 
-	WARN(!crtc, "checking null crtc?\n");
+	BUG_ON(!crtc);
 
 	dev = crtc->dev;
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_drv.c linux-3.2.22-g-v/drivers/gpu/drm/drm_drv.c
--- linux-3.2.22/drivers/gpu/drm/drm_drv.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_drv.c	2012-07-11 20:20:37.247306365 +0200
@@ -308,7 +308,7 @@ module_exit(drm_core_exit);
 /**
  * Copy and IOCTL return string to user space
  */
-static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
+static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value)
 {
 	int len;
 
@@ -387,7 +387,7 @@ long drm_ioctl(struct file *filp,
 
 	dev = file_priv->minor->dev;
 	atomic_inc(&dev->ioctl_count);
-	atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
+	atomic_inc_unchecked(&dev->counts[_DRM_STAT_IOCTLS]);
 	++file_priv->ioctl_count;
 
 	DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_fops.c linux-3.2.22-g-v/drivers/gpu/drm/drm_fops.c
--- linux-3.2.22/drivers/gpu/drm/drm_fops.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_fops.c	2012-07-11 20:20:37.247306365 +0200
@@ -71,7 +71,7 @@ static int drm_setup(struct drm_device *
 	}
 
 	for (i = 0; i < ARRAY_SIZE(dev->counts); i++)
-		atomic_set(&dev->counts[i], 0);
+		atomic_set_unchecked(&dev->counts[i], 0);
 
 	dev->sigdata.lock = NULL;
 
@@ -135,8 +135,8 @@ int drm_open(struct inode *inode, struct
 
 	retcode = drm_open_helper(inode, filp, dev);
 	if (!retcode) {
-		atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
-		if (!dev->open_count++)
+		atomic_inc_unchecked(&dev->counts[_DRM_STAT_OPENS]);
+		if (local_inc_return(&dev->open_count) == 1)
 			retcode = drm_setup(dev);
 	}
 	if (!retcode) {
@@ -473,7 +473,7 @@ int drm_release(struct inode *inode, str
 
 	mutex_lock(&drm_global_mutex);
 
-	DRM_DEBUG("open_count = %d\n", dev->open_count);
+	DRM_DEBUG("open_count = %d\n", local_read(&dev->open_count));
 
 	if (dev->driver->preclose)
 		dev->driver->preclose(dev, file_priv);
@@ -485,7 +485,7 @@ int drm_release(struct inode *inode, str
 	DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 		  task_pid_nr(current),
 		  (long)old_encode_dev(file_priv->minor->device),
-		  dev->open_count);
+		  local_read(&dev->open_count));
 
 	/* Release any auth tokens that might point to this file_priv,
 	   (do that under the drm_global_mutex) */
@@ -571,8 +571,8 @@ int drm_release(struct inode *inode, str
 	 * End inline drm_release
 	 */
 
-	atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
-	if (!--dev->open_count) {
+	atomic_inc_unchecked(&dev->counts[_DRM_STAT_CLOSES]);
+	if (local_dec_and_test(&dev->open_count)) {
 		if (atomic_read(&dev->ioctl_count)) {
 			DRM_ERROR("Device busy: %d\n",
 				  atomic_read(&dev->ioctl_count));
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_global.c linux-3.2.22-g-v/drivers/gpu/drm/drm_global.c
--- linux-3.2.22/drivers/gpu/drm/drm_global.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_global.c	2012-07-11 20:20:37.247306365 +0200
@@ -36,7 +36,7 @@
 struct drm_global_item {
 	struct mutex mutex;
 	void *object;
-	int refcount;
+	atomic_t refcount;
 };
 
 static struct drm_global_item glob[DRM_GLOBAL_NUM];
@@ -49,7 +49,7 @@ void drm_global_init(void)
 		struct drm_global_item *item = &glob[i];
 		mutex_init(&item->mutex);
 		item->object = NULL;
-		item->refcount = 0;
+		atomic_set(&item->refcount, 0);
 	}
 }
 
@@ -59,7 +59,7 @@ void drm_global_release(void)
 	for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
 		struct drm_global_item *item = &glob[i];
 		BUG_ON(item->object != NULL);
-		BUG_ON(item->refcount != 0);
+		BUG_ON(atomic_read(&item->refcount) != 0);
 	}
 }
 
@@ -70,7 +70,7 @@ int drm_global_item_ref(struct drm_globa
 	void *object;
 
 	mutex_lock(&item->mutex);
-	if (item->refcount == 0) {
+	if (atomic_read(&item->refcount) == 0) {
 		item->object = kzalloc(ref->size, GFP_KERNEL);
 		if (unlikely(item->object == NULL)) {
 			ret = -ENOMEM;
@@ -83,7 +83,7 @@ int drm_global_item_ref(struct drm_globa
 			goto out_err;
 
 	}
-	++item->refcount;
+	atomic_inc(&item->refcount);
 	ref->object = item->object;
 	object = item->object;
 	mutex_unlock(&item->mutex);
@@ -100,9 +100,9 @@ void drm_global_item_unref(struct drm_gl
 	struct drm_global_item *item = &glob[ref->global_type];
 
 	mutex_lock(&item->mutex);
-	BUG_ON(item->refcount == 0);
+	BUG_ON(atomic_read(&item->refcount) == 0);
 	BUG_ON(ref->object != item->object);
-	if (--item->refcount == 0) {
+	if (atomic_dec_and_test(&item->refcount)) {
 		ref->release(ref);
 		item->object = NULL;
 	}
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_info.c linux-3.2.22-g-v/drivers/gpu/drm/drm_info.c
--- linux-3.2.22/drivers/gpu/drm/drm_info.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_info.c	2012-07-11 20:20:37.250642849 +0200
@@ -75,10 +75,14 @@ int drm_vm_info(struct seq_file *m, void
 	struct drm_local_map *map;
 	struct drm_map_list *r_list;
 
-	/* Hardcoded from _DRM_FRAME_BUFFER,
-	   _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
-	   _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
-	const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
+	static const char * const types[] = {
+		[_DRM_FRAME_BUFFER] = "FB",
+		[_DRM_REGISTERS] = "REG",
+		[_DRM_SHM] = "SHM",
+		[_DRM_AGP] = "AGP",
+		[_DRM_SCATTER_GATHER] = "SG",
+		[_DRM_CONSISTENT] = "PCI",
+		[_DRM_GEM] = "GEM" };
 	const char *type;
 	int i;
 
@@ -89,7 +93,7 @@ int drm_vm_info(struct seq_file *m, void
 		map = r_list->map;
 		if (!map)
 			continue;
-		if (map->type < 0 || map->type > 5)
+		if (map->type >= ARRAY_SIZE(types))
 			type = "??";
 		else
 			type = types[map->type];
@@ -290,7 +294,11 @@ int drm_vma_info(struct seq_file *m, voi
 			   vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
 			   vma->vm_flags & VM_LOCKED ? 'l' : '-',
 			   vma->vm_flags & VM_IO ? 'i' : '-',
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+			   0);
+#else
 			   vma->vm_pgoff);
+#endif
 
 #if defined(__i386__)
 		pgprot = pgprot_val(vma->vm_page_prot);
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_ioc32.c linux-3.2.22-g-v/drivers/gpu/drm/drm_ioc32.c
--- linux-3.2.22/drivers/gpu/drm/drm_ioc32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_ioc32.c	2012-07-11 20:20:37.250642849 +0200
@@ -456,7 +456,7 @@ static int compat_drm_infobufs(struct fi
 	request = compat_alloc_user_space(nbytes);
 	if (!access_ok(VERIFY_WRITE, request, nbytes))
 		return -EFAULT;
-	list = (struct drm_buf_desc *) (request + 1);
+	list = (struct drm_buf_desc __user *) (request + 1);
 
 	if (__put_user(count, &request->count)
 	    || __put_user(list, &request->list))
@@ -517,7 +517,7 @@ static int compat_drm_mapbufs(struct fil
 	request = compat_alloc_user_space(nbytes);
 	if (!access_ok(VERIFY_WRITE, request, nbytes))
 		return -EFAULT;
-	list = (struct drm_buf_pub *) (request + 1);
+	list = (struct drm_buf_pub __user *) (request + 1);
 
 	if (__put_user(count, &request->count)
 	    || __put_user(list, &request->list))
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_ioctl.c linux-3.2.22-g-v/drivers/gpu/drm/drm_ioctl.c
--- linux-3.2.22/drivers/gpu/drm/drm_ioctl.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_ioctl.c	2012-07-11 20:20:37.250642849 +0200
@@ -256,7 +256,7 @@ int drm_getstats(struct drm_device *dev,
 			stats->data[i].value =
 			    (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0);
 		else
-			stats->data[i].value = atomic_read(&dev->counts[i]);
+			stats->data[i].value = atomic_read_unchecked(&dev->counts[i]);
 		stats->data[i].type = dev->types[i];
 	}
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/drm_lock.c linux-3.2.22-g-v/drivers/gpu/drm/drm_lock.c
--- linux-3.2.22/drivers/gpu/drm/drm_lock.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/drm_lock.c	2012-07-11 20:20:37.250642849 +0200
@@ -89,7 +89,7 @@ int drm_lock(struct drm_device *dev, voi
 		if (drm_lock_take(&master->lock, lock->context)) {
 			master->lock.file_priv = file_priv;
 			master->lock.lock_time = jiffies;
-			atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
+			atomic_inc_unchecked(&dev->counts[_DRM_STAT_LOCKS]);
 			break;	/* Got lock */
 		}
 
@@ -160,7 +160,7 @@ int drm_unlock(struct drm_device *dev, v
 		return -EINVAL;
 	}
 
-	atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]);
+	atomic_inc_unchecked(&dev->counts[_DRM_STAT_UNLOCKS]);
 
 	if (drm_lock_free(&master->lock, lock->context)) {
 		/* FIXME: Should really bail out here. */
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i810/i810_dma.c linux-3.2.22-g-v/drivers/gpu/drm/i810/i810_dma.c
--- linux-3.2.22/drivers/gpu/drm/i810/i810_dma.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i810/i810_dma.c	2012-07-11 20:20:37.253980035 +0200
@@ -950,8 +950,8 @@ static int i810_dma_vertex(struct drm_de
 				 dma->buflist[vertex->idx],
 				 vertex->discard, vertex->used);
 
-	atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
-	atomic_inc(&dev->counts[_DRM_STAT_DMA]);
+	atomic_add_unchecked(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
+	atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]);
 	sarea_priv->last_enqueue = dev_priv->counter - 1;
 	sarea_priv->last_dispatch = (int)hw_status[5];
 
@@ -1111,8 +1111,8 @@ static int i810_dma_mc(struct drm_device
 	i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
 			     mc->last_render);
 
-	atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
-	atomic_inc(&dev->counts[_DRM_STAT_DMA]);
+	atomic_add_unchecked(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
+	atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]);
 	sarea_priv->last_enqueue = dev_priv->counter - 1;
 	sarea_priv->last_dispatch = (int)hw_status[5];
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i810/i810_drv.h linux-3.2.22-g-v/drivers/gpu/drm/i810/i810_drv.h
--- linux-3.2.22/drivers/gpu/drm/i810/i810_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i810/i810_drv.h	2012-07-11 20:20:37.253980035 +0200
@@ -108,8 +108,8 @@ typedef struct drm_i810_private {
 	int page_flipping;
 
 	wait_queue_head_t irq_queue;
-	atomic_t irq_received;
-	atomic_t irq_emitted;
+	atomic_unchecked_t irq_received;
+	atomic_unchecked_t irq_emitted;
 
 	int front_offset;
 } drm_i810_private_t;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/i915_debugfs.c linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_debugfs.c
--- linux-3.2.22/drivers/gpu/drm/i915/i915_debugfs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_debugfs.c	2012-07-11 20:20:37.253980035 +0200
@@ -499,7 +499,7 @@ static int i915_interrupt_info(struct se
 			   I915_READ(GTIMR));
 	}
 	seq_printf(m, "Interrupts received: %d\n",
-		   atomic_read(&dev_priv->irq_received));
+		   atomic_read_unchecked(&dev_priv->irq_received));
 	for (i = 0; i < I915_NUM_RINGS; i++) {
 		if (IS_GEN6(dev) || IS_GEN7(dev)) {
 			seq_printf(m, "Graphics Interrupt mask (%s):	%08x\n",
@@ -1232,7 +1232,7 @@ static int i915_opregion(struct seq_file
 		return ret;
 
 	if (opregion->header)
-		seq_write(m, opregion->header, OPREGION_SIZE);
+		seq_write(m, (const void __force_kernel *)opregion->header, OPREGION_SIZE);
 
 	mutex_unlock(&dev->struct_mutex);
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/i915_dma.c linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_dma.c
--- linux-3.2.22/drivers/gpu/drm/i915/i915_dma.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_dma.c	2012-07-11 20:20:37.253980035 +0200
@@ -1172,7 +1172,7 @@ static bool i915_switcheroo_can_switch(s
 	bool can_switch;
 
 	spin_lock(&dev->count_lock);
-	can_switch = (dev->open_count == 0);
+	can_switch = (local_read(&dev->open_count) == 0);
 	spin_unlock(&dev->count_lock);
 	return can_switch;
 }
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/i915_drv.h linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_drv.h
--- linux-3.2.22/drivers/gpu/drm/i915/i915_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_drv.h	2012-07-11 20:20:37.257310985 +0200
@@ -229,7 +229,7 @@ struct drm_i915_display_funcs {
 	/* render clock increase/decrease */
 	/* display clock increase/decrease */
 	/* pll clock increase/decrease */
-};
+} __no_const;
 
 struct intel_device_info {
 	u8 gen;
@@ -319,7 +319,7 @@ typedef struct drm_i915_private {
 	int current_page;
 	int page_flipping;
 
-	atomic_t irq_received;
+	atomic_unchecked_t irq_received;
 
 	/* protects the irq masks */
 	spinlock_t irq_lock;
@@ -894,7 +894,7 @@ struct drm_i915_gem_object {
 	 * will be page flipped away on the next vblank.  When it
 	 * reaches 0, dev_priv->pending_flip_queue will be woken up.
 	 */
-	atomic_t pending_flip;
+	atomic_unchecked_t pending_flip;
 };
 
 #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
@@ -1276,7 +1276,7 @@ extern int intel_setup_gmbus(struct drm_
 extern void intel_teardown_gmbus(struct drm_device *dev);
 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
-extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
+static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
 {
 	return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
 }
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/i915_gem_execbuffer.c linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_gem_execbuffer.c
--- linux-3.2.22/drivers/gpu/drm/i915/i915_gem_execbuffer.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_gem_execbuffer.c	2012-07-11 20:20:37.257310985 +0200
@@ -189,7 +189,7 @@ i915_gem_object_set_to_gpu_domain(struct
 		i915_gem_clflush_object(obj);
 
 	if (obj->base.pending_write_domain)
-		cd->flips |= atomic_read(&obj->pending_flip);
+		cd->flips |= atomic_read_unchecked(&obj->pending_flip);
 
 	/* The actual obj->write_domain will be updated with
 	 * pending_write_domain after we emit the accumulated flush for all
@@ -882,9 +882,9 @@ i915_gem_check_execbuffer(struct drm_i91
 
 static int
 validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
-		   int count)
+		   unsigned int count)
 {
-	int i;
+	unsigned int i;
 
 	for (i = 0; i < count; i++) {
 		char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/i915_irq.c linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_irq.c
--- linux-3.2.22/drivers/gpu/drm/i915/i915_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/i915_irq.c	2012-07-11 20:20:37.260644072 +0200
@@ -496,7 +496,7 @@ static irqreturn_t ivybridge_irq_handler
 	u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir;
 	struct drm_i915_master_private *master_priv;
 
-	atomic_inc(&dev_priv->irq_received);
+	atomic_inc_unchecked(&dev_priv->irq_received);
 
 	/* disable master interrupt before clearing iir  */
 	de_ier = I915_READ(DEIER);
@@ -579,7 +579,7 @@ static irqreturn_t ironlake_irq_handler(
 	struct drm_i915_master_private *master_priv;
 	u32 bsd_usr_interrupt = GT_BSD_USER_INTERRUPT;
 
-	atomic_inc(&dev_priv->irq_received);
+	atomic_inc_unchecked(&dev_priv->irq_received);
 
 	if (IS_GEN6(dev))
 		bsd_usr_interrupt = GT_GEN6_BSD_USER_INTERRUPT;
@@ -1227,7 +1227,7 @@ static irqreturn_t i915_driver_irq_handl
 	int ret = IRQ_NONE, pipe;
 	bool blc_event = false;
 
-	atomic_inc(&dev_priv->irq_received);
+	atomic_inc_unchecked(&dev_priv->irq_received);
 
 	iir = I915_READ(IIR);
 
@@ -1746,7 +1746,7 @@ static void ironlake_irq_preinstall(stru
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
-	atomic_set(&dev_priv->irq_received, 0);
+	atomic_set_unchecked(&dev_priv->irq_received, 0);
 
 	INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func);
 	INIT_WORK(&dev_priv->error_work, i915_error_work_func);
@@ -1934,7 +1934,7 @@ static void i915_driver_irq_preinstall(s
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int pipe;
 
-	atomic_set(&dev_priv->irq_received, 0);
+	atomic_set_unchecked(&dev_priv->irq_received, 0);
 
 	INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func);
 	INIT_WORK(&dev_priv->error_work, i915_error_work_func);
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/i915/intel_display.c linux-3.2.22-g-v/drivers/gpu/drm/i915/intel_display.c
--- linux-3.2.22/drivers/gpu/drm/i915/intel_display.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/i915/intel_display.c	2012-07-11 20:20:37.263972194 +0200
@@ -2196,7 +2196,7 @@ intel_finish_fb(struct drm_framebuffer *
 
 	wait_event(dev_priv->pending_flip_queue,
 		   atomic_read(&dev_priv->mm.wedged) ||
-		   atomic_read(&obj->pending_flip) == 0);
+		   atomic_read_unchecked(&obj->pending_flip) == 0);
 
 	/* Big Hammer, we also need to ensure that any pending
 	 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
@@ -2861,7 +2861,7 @@ static void intel_crtc_wait_for_pending_
 	obj = to_intel_framebuffer(crtc->fb)->obj;
 	dev_priv = crtc->dev->dev_private;
 	wait_event(dev_priv->pending_flip_queue,
-		   atomic_read(&obj->pending_flip) == 0);
+		   atomic_read_unchecked(&obj->pending_flip) == 0);
 }
 
 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
@@ -6982,7 +6982,7 @@ static void do_intel_finish_page_flip(st
 
 	atomic_clear_mask(1 << intel_crtc->plane,
 			  &obj->pending_flip.counter);
-	if (atomic_read(&obj->pending_flip) == 0)
+	if (atomic_read_unchecked(&obj->pending_flip) == 0)
 		wake_up(&dev_priv->pending_flip_queue);
 
 	schedule_work(&work->work);
@@ -7177,7 +7177,13 @@ static int intel_gen6_queue_flip(struct 
 	OUT_RING(fb->pitch | obj->tiling_mode);
 	OUT_RING(obj->gtt_offset);
 
-	pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+	/* Contrary to the suggestions in the documentation,
+	 * "Enable Panel Fitter" does not seem to be required when page
+	 * flipping with a non-native mode, and worse causes a normal
+	 * modeset to fail.
+	 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+	 */
+	pf = 0;
 	pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
 	OUT_RING(pf | pipesrc);
 	ADVANCE_LP_RING();
@@ -7309,7 +7315,7 @@ static int intel_crtc_page_flip(struct d
 	/* Block clients from rendering to the new back buffer until
 	 * the flip occurs and the object is no longer visible.
 	 */
-	atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
+	atomic_add_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
 
 	ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
 	if (ret)
@@ -7323,7 +7329,7 @@ static int intel_crtc_page_flip(struct d
 	return 0;
 
 cleanup_pending:
-	atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
+	atomic_sub_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
 	drm_gem_object_unreference(&work->old_fb_obj->base);
 	drm_gem_object_unreference(&obj->base);
 	mutex_unlock(&dev->struct_mutex);
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/mga/mga_drv.h linux-3.2.22-g-v/drivers/gpu/drm/mga/mga_drv.h
--- linux-3.2.22/drivers/gpu/drm/mga/mga_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/mga/mga_drv.h	2012-07-11 20:20:37.263972194 +0200
@@ -120,9 +120,9 @@ typedef struct drm_mga_private {
 	u32 clear_cmd;
 	u32 maccess;
 
-	atomic_t vbl_received;          /**< Number of vblanks received. */
+	atomic_unchecked_t vbl_received;          /**< Number of vblanks received. */
 	wait_queue_head_t fence_queue;
-	atomic_t last_fence_retired;
+	atomic_unchecked_t last_fence_retired;
 	u32 next_fence_to_post;
 
 	unsigned int fb_cpp;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/mga/mga_irq.c linux-3.2.22-g-v/drivers/gpu/drm/mga/mga_irq.c
--- linux-3.2.22/drivers/gpu/drm/mga/mga_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/mga/mga_irq.c	2012-07-11 20:20:37.267286672 +0200
@@ -44,7 +44,7 @@ u32 mga_get_vblank_counter(struct drm_de
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 
@@ -60,7 +60,7 @@ irqreturn_t mga_driver_irq_handler(DRM_I
 	/* VBLANK interrupt */
 	if (status & MGA_VLINEPEN) {
 		MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
-		atomic_inc(&dev_priv->vbl_received);
+		atomic_inc_unchecked(&dev_priv->vbl_received);
 		drm_handle_vblank(dev, 0);
 		handled = 1;
 	}
@@ -79,7 +79,7 @@ irqreturn_t mga_driver_irq_handler(DRM_I
 		if ((prim_start & ~0x03) != (prim_end & ~0x03))
 			MGA_WRITE(MGA_PRIMEND, prim_end);
 
-		atomic_inc(&dev_priv->last_fence_retired);
+		atomic_inc_unchecked(&dev_priv->last_fence_retired);
 		DRM_WAKEUP(&dev_priv->fence_queue);
 		handled = 1;
 	}
@@ -130,7 +130,7 @@ int mga_driver_fence_wait(struct drm_dev
 	 * using fences.
 	 */
 	DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * DRM_HZ,
-		    (((cur_fence = atomic_read(&dev_priv->last_fence_retired))
+		    (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired))
 		      - *sequence) <= (1 << 23)));
 
 	*sequence = cur_fence;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_bios.c linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_bios.c
--- linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_bios.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_bios.c	2012-07-11 20:20:37.267286672 +0200
@@ -201,7 +201,7 @@ struct methods {
 	const char desc[8];
 	void (*loadbios)(struct drm_device *, uint8_t *);
 	const bool rw;
-};
+} __do_const;
 
 static struct methods shadow_methods[] = {
 	{ "PRAMIN", load_vbios_pramin, true },
@@ -5474,7 +5474,7 @@ parse_bit_U_tbl_entry(struct drm_device 
 struct bit_table {
 	const char id;
 	int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
-};
+} __no_const;
 
 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_drv.h linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_drv.h
--- linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_drv.h	2012-07-11 20:20:37.270603437 +0200
@@ -238,7 +238,7 @@ struct nouveau_channel {
 		struct list_head pending;
 		uint32_t sequence;
 		uint32_t sequence_ack;
-		atomic_t last_sequence_irq;
+		atomic_unchecked_t last_sequence_irq;
 		struct nouveau_vma vma;
 	} fence;
 
@@ -319,7 +319,7 @@ struct nouveau_exec_engine {
 			   u32 handle, u16 class);
 	void (*set_tile_region)(struct drm_device *dev, int i);
 	void (*tlb_flush)(struct drm_device *, int engine);
-};
+} __no_const;
 
 struct nouveau_instmem_engine {
 	void	*priv;
@@ -341,13 +341,13 @@ struct nouveau_instmem_engine {
 struct nouveau_mc_engine {
 	int  (*init)(struct drm_device *dev);
 	void (*takedown)(struct drm_device *dev);
-};
+} __no_const;
 
 struct nouveau_timer_engine {
 	int      (*init)(struct drm_device *dev);
 	void     (*takedown)(struct drm_device *dev);
 	uint64_t (*read)(struct drm_device *dev);
-};
+} __no_const;
 
 struct nouveau_fb_engine {
 	int num_tiles;
@@ -558,7 +558,7 @@ struct nouveau_vram_engine {
 	void (*put)(struct drm_device *, struct nouveau_mem **);
 
 	bool (*flags_valid)(struct drm_device *, u32 tile_flags);
-};
+} __no_const;
 
 struct nouveau_engine {
 	struct nouveau_instmem_engine instmem;
@@ -706,7 +706,7 @@ struct drm_nouveau_private {
 		struct drm_global_reference mem_global_ref;
 		struct ttm_bo_global_ref bo_global_ref;
 		struct ttm_bo_device bdev;
-		atomic_t validate_sequence;
+		atomic_unchecked_t validate_sequence;
 	} ttm;
 
 	struct {
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_fence.c linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_fence.c
--- linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_fence.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_fence.c	2012-07-11 20:20:37.270603437 +0200
@@ -85,7 +85,7 @@ nouveau_fence_update(struct nouveau_chan
 		if (USE_REFCNT(dev))
 			sequence = nvchan_rd32(chan, 0x48);
 		else
-			sequence = atomic_read(&chan->fence.last_sequence_irq);
+			sequence = atomic_read_unchecked(&chan->fence.last_sequence_irq);
 
 		if (chan->fence.sequence_ack == sequence)
 			goto out;
@@ -539,7 +539,7 @@ nouveau_fence_channel_init(struct nouvea
 			return ret;
 	}
 
-	atomic_set(&chan->fence.last_sequence_irq, 0);
+	atomic_set_unchecked(&chan->fence.last_sequence_irq, 0);
 	return 0;
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_gem.c linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_gem.c
--- linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_gem.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_gem.c	2012-07-11 20:20:37.273978796 +0200
@@ -314,7 +314,7 @@ validate_init(struct nouveau_channel *ch
 	int trycnt = 0;
 	int ret, i;
 
-	sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
+	sequence = atomic_add_return_unchecked(1, &dev_priv->ttm.validate_sequence);
 retry:
 	if (++trycnt > 100000) {
 		NV_ERROR(dev, "%s failed and gave up.\n", __func__);
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_state.c linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_state.c
--- linux-3.2.22/drivers/gpu/drm/nouveau/nouveau_state.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nouveau_state.c	2012-07-11 20:20:37.273978796 +0200
@@ -542,7 +542,7 @@ static bool nouveau_switcheroo_can_switc
 	bool can_switch;
 
 	spin_lock(&dev->count_lock);
-	can_switch = (dev->open_count == 0);
+	can_switch = (local_read(&dev->open_count) == 0);
 	spin_unlock(&dev->count_lock);
 	return can_switch;
 }
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/nouveau/nv04_graph.c linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nv04_graph.c
--- linux-3.2.22/drivers/gpu/drm/nouveau/nv04_graph.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/nouveau/nv04_graph.c	2012-07-11 20:20:37.273978796 +0200
@@ -554,7 +554,7 @@ static int
 nv04_graph_mthd_set_ref(struct nouveau_channel *chan,
 			u32 class, u32 mthd, u32 data)
 {
-	atomic_set(&chan->fence.last_sequence_irq, data);
+	atomic_set_unchecked(&chan->fence.last_sequence_irq, data);
 	return 0;
 }
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/r128/r128_cce.c linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_cce.c
--- linux-3.2.22/drivers/gpu/drm/r128/r128_cce.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_cce.c	2012-07-11 20:20:37.277307491 +0200
@@ -378,7 +378,7 @@ static int r128_do_init_cce(struct drm_d
 
 	/* GH: Simple idle check.
 	 */
-	atomic_set(&dev_priv->idle_count, 0);
+	atomic_set_unchecked(&dev_priv->idle_count, 0);
 
 	/* We don't support anything other than bus-mastering ring mode,
 	 * but the ring can be in either AGP or PCI space for the ring
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/r128/r128_drv.h linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_drv.h
--- linux-3.2.22/drivers/gpu/drm/r128/r128_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_drv.h	2012-07-11 20:20:37.277307491 +0200
@@ -90,14 +90,14 @@ typedef struct drm_r128_private {
 	int is_pci;
 	unsigned long cce_buffers_offset;
 
-	atomic_t idle_count;
+	atomic_unchecked_t idle_count;
 
 	int page_flipping;
 	int current_page;
 	u32 crtc_offset;
 	u32 crtc_offset_cntl;
 
-	atomic_t vbl_received;
+	atomic_unchecked_t vbl_received;
 
 	u32 color_fmt;
 	unsigned int front_offset;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/r128/r128_irq.c linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_irq.c
--- linux-3.2.22/drivers/gpu/drm/r128/r128_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_irq.c	2012-07-11 20:20:37.277307491 +0200
@@ -42,7 +42,7 @@ u32 r128_get_vblank_counter(struct drm_d
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS)
@@ -56,7 +56,7 @@ irqreturn_t r128_driver_irq_handler(DRM_
 	/* VBLANK interrupt */
 	if (status & R128_CRTC_VBLANK_INT) {
 		R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
-		atomic_inc(&dev_priv->vbl_received);
+		atomic_inc_unchecked(&dev_priv->vbl_received);
 		drm_handle_vblank(dev, 0);
 		return IRQ_HANDLED;
 	}
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/r128/r128_state.c linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_state.c
--- linux-3.2.22/drivers/gpu/drm/r128/r128_state.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/r128/r128_state.c	2012-07-11 20:20:37.277307491 +0200
@@ -321,10 +321,10 @@ static void r128_clear_box(drm_r128_priv
 
 static void r128_cce_performance_boxes(drm_r128_private_t *dev_priv)
 {
-	if (atomic_read(&dev_priv->idle_count) == 0)
+	if (atomic_read_unchecked(&dev_priv->idle_count) == 0)
 		r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0);
 	else
-		atomic_set(&dev_priv->idle_count, 0);
+		atomic_set_unchecked(&dev_priv->idle_count, 0);
 }
 
 #endif
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/mkregtable.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/mkregtable.c
--- linux-3.2.22/drivers/gpu/drm/radeon/mkregtable.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/mkregtable.c	2012-07-11 20:20:37.277307491 +0200
@@ -637,14 +637,14 @@ static int parser_auth(struct table *t, 
 	regex_t mask_rex;
 	regmatch_t match[4];
 	char buf[1024];
-	size_t end;
+	long end;
 	int len;
 	int done = 0;
 	int r;
 	unsigned o;
 	struct offset *offset;
 	char last_reg_s[10];
-	int last_reg;
+	unsigned long last_reg;
 
 	if (regcomp
 	    (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) {
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/r600_cs.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/r600_cs.c
--- linux-3.2.22/drivers/gpu/drm/radeon/r600_cs.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/r600_cs.c	2012-07-11 20:20:37.280579080 +0200
@@ -1304,6 +1304,7 @@ static int r600_check_texture_resource(s
 	h0 = G_038004_TEX_HEIGHT(word1) + 1;
 	d0 = G_038004_TEX_DEPTH(word1);
 	nfaces = 1;
+	array = 0;
 	switch (G_038000_DIM(word0)) {
 	case V_038000_SQ_TEX_DIM_1D:
 	case V_038000_SQ_TEX_DIM_2D:
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_device.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_device.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_device.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_device.c	2012-07-11 20:20:37.280579080 +0200
@@ -687,7 +687,7 @@ static bool radeon_switcheroo_can_switch
 	bool can_switch;
 
 	spin_lock(&dev->count_lock);
-	can_switch = (dev->open_count == 0);
+	can_switch = (local_read(&dev->open_count) == 0);
 	spin_unlock(&dev->count_lock);
 	return can_switch;
 }
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_drv.h linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_drv.h
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_drv.h	2012-07-11 20:20:37.284116661 +0200
@@ -255,7 +255,7 @@ typedef struct drm_radeon_private {
 
 	/* SW interrupt */
 	wait_queue_head_t swi_queue;
-	atomic_t swi_emitted;
+	atomic_unchecked_t swi_emitted;
 	int vblank_crtc;
 	uint32_t irq_enable_reg;
 	uint32_t r500_disp_irq_reg;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_fence.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_fence.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_fence.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_fence.c	2012-07-11 20:20:37.284116661 +0200
@@ -78,7 +78,7 @@ int radeon_fence_emit(struct radeon_devi
 		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
 		return 0;
 	}
-	fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);
+	fence->seq = atomic_add_return_unchecked(1, &rdev->fence_drv.seq);
 	if (!rdev->cp.ready)
 		/* FIXME: cp is not running assume everythings is done right
 		 * away
@@ -373,7 +373,7 @@ int radeon_fence_driver_init(struct rade
 		return r;
 	}
 	radeon_fence_write(rdev, 0);
-	atomic_set(&rdev->fence_drv.seq, 0);
+	atomic_set_unchecked(&rdev->fence_drv.seq, 0);
 	INIT_LIST_HEAD(&rdev->fence_drv.created);
 	INIT_LIST_HEAD(&rdev->fence_drv.emited);
 	INIT_LIST_HEAD(&rdev->fence_drv.signaled);
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon.h linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon.h
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon.h	2012-07-11 20:20:37.280579080 +0200
@@ -192,7 +192,7 @@ extern int sumo_get_temp(struct radeon_d
  */
 struct radeon_fence_driver {
 	uint32_t			scratch_reg;
-	atomic_t			seq;
+	atomic_unchecked_t		seq;
 	uint32_t			last_seq;
 	unsigned long			last_jiffies;
 	unsigned long			last_timeout;
@@ -530,7 +530,7 @@ struct r600_blit_cp_primitives {
 			     int x2, int y2);
 	void (*draw_auto)(struct radeon_device *rdev);
 	void (*set_default_state)(struct radeon_device *rdev);
-};
+} __no_const;
 
 struct r600_blit {
 	struct mutex		mutex;
@@ -954,7 +954,7 @@ struct radeon_asic {
 	void (*pre_page_flip)(struct radeon_device *rdev, int crtc);
 	u32 (*page_flip)(struct radeon_device *rdev, int crtc, u64 crtc_base);
 	void (*post_page_flip)(struct radeon_device *rdev, int crtc);
-};
+} __no_const;
 
 /*
  * Asic structures
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_ioc32.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_ioc32.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_ioc32.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_ioc32.c	2012-07-11 20:20:37.284116661 +0200
@@ -359,7 +359,7 @@ static int compat_radeon_cp_setparam(str
 	request = compat_alloc_user_space(sizeof(*request));
 	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 	    || __put_user(req32.param, &request->param)
-	    || __put_user((void __user *)(unsigned long)req32.value,
+	    || __put_user((unsigned long)req32.value,
 			  &request->value))
 		return -EFAULT;
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_irq.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_irq.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_irq.c	2012-07-11 20:20:37.287450189 +0200
@@ -225,8 +225,8 @@ static int radeon_emit_irq(struct drm_de
 	unsigned int ret;
 	RING_LOCALS;
 
-	atomic_inc(&dev_priv->swi_emitted);
-	ret = atomic_read(&dev_priv->swi_emitted);
+	atomic_inc_unchecked(&dev_priv->swi_emitted);
+	ret = atomic_read_unchecked(&dev_priv->swi_emitted);
 
 	BEGIN_RING(4);
 	OUT_RING_REG(RADEON_LAST_SWI_REG, ret);
@@ -352,7 +352,7 @@ int radeon_driver_irq_postinstall(struct
 	drm_radeon_private_t *dev_priv =
 	    (drm_radeon_private_t *) dev->dev_private;
 
-	atomic_set(&dev_priv->swi_emitted, 0);
+	atomic_set_unchecked(&dev_priv->swi_emitted, 0);
 	DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
 
 	dev->max_vblank_count = 0x001fffff;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_state.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_state.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_state.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_state.c	2012-07-11 20:20:37.287450189 +0200
@@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_de
 	if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS)
 		sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS;
 
-	if (DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes,
+	if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes,
 			       sarea_priv->nbox * sizeof(depth_boxes[0])))
 		return -EFAULT;
 
@@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	drm_radeon_getparam_t *param = data;
-	int value;
+	int value = 0;
 
 	DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/radeon_ttm.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_ttm.c
--- linux-3.2.22/drivers/gpu/drm/radeon/radeon_ttm.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/radeon_ttm.c	2012-07-11 20:20:37.287450189 +0200
@@ -672,8 +672,10 @@ int radeon_mmap(struct file *filp, struc
 	}
 	if (unlikely(ttm_vm_ops == NULL)) {
 		ttm_vm_ops = vma->vm_ops;
-		radeon_ttm_vm_ops = *ttm_vm_ops;
-		radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
+		pax_open_kernel();
+		memcpy((void *)&radeon_ttm_vm_ops, ttm_vm_ops, sizeof(radeon_ttm_vm_ops));
+		*(void **)&radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
+		pax_close_kernel();
 	}
 	vma->vm_ops = &radeon_ttm_vm_ops;
 	return 0;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/radeon/rs690.c linux-3.2.22-g-v/drivers/gpu/drm/radeon/rs690.c
--- linux-3.2.22/drivers/gpu/drm/radeon/rs690.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/radeon/rs690.c	2012-07-11 20:20:37.290783393 +0200
@@ -304,9 +304,11 @@ void rs690_crtc_bandwidth_compute(struct
 		if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&
 			rdev->pm.sideport_bandwidth.full)
 			rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth;
-		read_delay_latency.full = dfixed_const(370 * 800 * 1000);
+		read_delay_latency.full = dfixed_const(800 * 1000);
 		read_delay_latency.full = dfixed_div(read_delay_latency,
 			rdev->pm.igp_sideport_mclk);
+		a.full = dfixed_const(370);
+		read_delay_latency.full = dfixed_mul(read_delay_latency, a);
 	} else {
 		if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full &&
 			rdev->pm.k8_bandwidth.full)
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/ttm/ttm_page_alloc.c linux-3.2.22-g-v/drivers/gpu/drm/ttm/ttm_page_alloc.c
--- linux-3.2.22/drivers/gpu/drm/ttm/ttm_page_alloc.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/ttm/ttm_page_alloc.c	2012-07-11 20:20:37.290783393 +0200
@@ -398,9 +398,9 @@ static int ttm_pool_get_num_unused_pages
 static int ttm_pool_mm_shrink(struct shrinker *shrink,
 			      struct shrink_control *sc)
 {
-	static atomic_t start_pool = ATOMIC_INIT(0);
+	static atomic_unchecked_t start_pool = ATOMIC_INIT(0);
 	unsigned i;
-	unsigned pool_offset = atomic_add_return(1, &start_pool);
+	unsigned pool_offset = atomic_add_return_unchecked(1, &start_pool);
 	struct ttm_page_pool *pool;
 	int shrink_pages = sc->nr_to_scan;
 
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/via/via_drv.h linux-3.2.22-g-v/drivers/gpu/drm/via/via_drv.h
--- linux-3.2.22/drivers/gpu/drm/via/via_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/via/via_drv.h	2012-07-11 20:20:37.290783393 +0200
@@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer {
 typedef uint32_t maskarray_t[5];
 
 typedef struct drm_via_irq {
-	atomic_t irq_received;
+	atomic_unchecked_t irq_received;
 	uint32_t pending_mask;
 	uint32_t enable_mask;
 	wait_queue_head_t irq_queue;
@@ -75,7 +75,7 @@ typedef struct drm_via_private {
 	struct timeval last_vblank;
 	int last_vblank_valid;
 	unsigned usec_per_vblank;
-	atomic_t vbl_received;
+	atomic_unchecked_t vbl_received;
 	drm_via_state_t hc_state;
 	char pci_buf[VIA_PCI_BUF_SIZE];
 	const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/via/via_irq.c linux-3.2.22-g-v/drivers/gpu/drm/via/via_irq.c
--- linux-3.2.22/drivers/gpu/drm/via/via_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/via/via_irq.c	2012-07-11 20:20:37.290783393 +0200
@@ -102,7 +102,7 @@ u32 via_get_vblank_counter(struct drm_de
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
@@ -117,8 +117,8 @@ irqreturn_t via_driver_irq_handler(DRM_I
 
 	status = VIA_READ(VIA_REG_INTERRUPT);
 	if (status & VIA_IRQ_VBLANK_PENDING) {
-		atomic_inc(&dev_priv->vbl_received);
-		if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
+		atomic_inc_unchecked(&dev_priv->vbl_received);
+		if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) {
 			do_gettimeofday(&cur_vblank);
 			if (dev_priv->last_vblank_valid) {
 				dev_priv->usec_per_vblank =
@@ -128,7 +128,7 @@ irqreturn_t via_driver_irq_handler(DRM_I
 			dev_priv->last_vblank = cur_vblank;
 			dev_priv->last_vblank_valid = 1;
 		}
-		if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
+		if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) {
 			DRM_DEBUG("US per vblank is: %u\n",
 				  dev_priv->usec_per_vblank);
 		}
@@ -138,7 +138,7 @@ irqreturn_t via_driver_irq_handler(DRM_I
 
 	for (i = 0; i < dev_priv->num_irqs; ++i) {
 		if (status & cur_irq->pending_mask) {
-			atomic_inc(&cur_irq->irq_received);
+			atomic_inc_unchecked(&cur_irq->irq_received);
 			DRM_WAKEUP(&cur_irq->irq_queue);
 			handled = 1;
 			if (dev_priv->irq_map[drm_via_irq_dma0_td] == i)
@@ -243,11 +243,11 @@ via_driver_irq_wait(struct drm_device *d
 		DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ,
 			    ((VIA_READ(masks[irq][2]) & masks[irq][3]) ==
 			     masks[irq][4]));
-		cur_irq_sequence = atomic_read(&cur_irq->irq_received);
+		cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received);
 	} else {
 		DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ,
 			    (((cur_irq_sequence =
-			       atomic_read(&cur_irq->irq_received)) -
+			       atomic_read_unchecked(&cur_irq->irq_received)) -
 			      *sequence) <= (1 << 23)));
 	}
 	*sequence = cur_irq_sequence;
@@ -285,7 +285,7 @@ void via_driver_irq_preinstall(struct dr
 		}
 
 		for (i = 0; i < dev_priv->num_irqs; ++i) {
-			atomic_set(&cur_irq->irq_received, 0);
+			atomic_set_unchecked(&cur_irq->irq_received, 0);
 			cur_irq->enable_mask = dev_priv->irq_masks[i][0];
 			cur_irq->pending_mask = dev_priv->irq_masks[i][1];
 			DRM_INIT_WAITQUEUE(&cur_irq->irq_queue);
@@ -367,7 +367,7 @@ int via_wait_irq(struct drm_device *dev,
 	switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) {
 	case VIA_IRQ_RELATIVE:
 		irqwait->request.sequence +=
-			atomic_read(&cur_irq->irq_received);
+			atomic_read_unchecked(&cur_irq->irq_received);
 		irqwait->request.type &= ~_DRM_VBLANK_RELATIVE;
 	case VIA_IRQ_ABSOLUTE:
 		break;
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
--- linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h	2012-07-11 20:20:37.290783393 +0200
@@ -260,7 +260,7 @@ struct vmw_private {
 	 * Fencing and IRQs.
 	 */
 
-	atomic_t marker_seq;
+	atomic_unchecked_t marker_seq;
 	wait_queue_head_t fence_queue;
 	wait_queue_head_t fifo_queue;
 	int fence_queue_waiters; /* Protected by hw_mutex */
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
--- linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c	2012-07-11 20:20:37.294116872 +0200
@@ -137,7 +137,7 @@ int vmw_fifo_init(struct vmw_private *de
 		 (unsigned int) min,
 		 (unsigned int) fifo->capabilities);
 
-	atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno);
+	atomic_set_unchecked(&dev_priv->marker_seq, dev_priv->last_read_seqno);
 	iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE);
 	vmw_marker_queue_init(&fifo->marker_queue);
 	return vmw_fifo_send_fence(dev_priv, &dummy);
@@ -355,7 +355,7 @@ void *vmw_fifo_reserve(struct vmw_privat
 				if (reserveable)
 					iowrite32(bytes, fifo_mem +
 						  SVGA_FIFO_RESERVED);
-				return fifo_mem + (next_cmd >> 2);
+				return (__le32 __force_kernel *)fifo_mem + (next_cmd >> 2);
 			} else {
 				need_bounce = true;
 			}
@@ -475,7 +475,7 @@ int vmw_fifo_send_fence(struct vmw_priva
 
 	fm = vmw_fifo_reserve(dev_priv, bytes);
 	if (unlikely(fm == NULL)) {
-		*seqno = atomic_read(&dev_priv->marker_seq);
+		*seqno = atomic_read_unchecked(&dev_priv->marker_seq);
 		ret = -ENOMEM;
 		(void)vmw_fallback_wait(dev_priv, false, true, *seqno,
 					false, 3*HZ);
@@ -483,7 +483,7 @@ int vmw_fifo_send_fence(struct vmw_priva
 	}
 
 	do {
-		*seqno = atomic_add_return(1, &dev_priv->marker_seq);
+		*seqno = atomic_add_return_unchecked(1, &dev_priv->marker_seq);
 	} while (*seqno == 0);
 
 	if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) {
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
--- linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c	2012-07-11 20:20:37.294116872 +0200
@@ -107,7 +107,7 @@ bool vmw_seqno_passed(struct vmw_private
 	 * emitted. Then the fence is stale and signaled.
 	 */
 
-	ret = ((atomic_read(&dev_priv->marker_seq) - seqno)
+	ret = ((atomic_read_unchecked(&dev_priv->marker_seq) - seqno)
 	       > VMW_FENCE_WRAP);
 
 	return ret;
@@ -138,7 +138,7 @@ int vmw_fallback_wait(struct vmw_private
 
 	if (fifo_idle)
 		down_read(&fifo_state->rwsem);
-	signal_seq = atomic_read(&dev_priv->marker_seq);
+	signal_seq = atomic_read_unchecked(&dev_priv->marker_seq);
 	ret = 0;
 
 	for (;;) {
diff -NurpP --minimal linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
--- linux-3.2.22/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c	2012-07-11 20:20:37.294116872 +0200
@@ -151,7 +151,7 @@ int vmw_wait_lag(struct vmw_private *dev
 	while (!vmw_lag_lt(queue, us)) {
 		spin_lock(&queue->lock);
 		if (list_empty(&queue->head))
-			seqno = atomic_read(&dev_priv->marker_seq);
+			seqno = atomic_read_unchecked(&dev_priv->marker_seq);
 		else {
 			marker = list_first_entry(&queue->head,
 						 struct vmw_marker, head);
diff -NurpP --minimal linux-3.2.22/drivers/hid/hid-core.c linux-3.2.22-g-v/drivers/hid/hid-core.c
--- linux-3.2.22/drivers/hid/hid-core.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hid/hid-core.c	2012-07-11 20:20:37.294116872 +0200
@@ -2013,7 +2013,7 @@ static bool hid_ignore(struct hid_device
 
 int hid_add_device(struct hid_device *hdev)
 {
-	static atomic_t id = ATOMIC_INIT(0);
+	static atomic_unchecked_t id = ATOMIC_INIT(0);
 	int ret;
 
 	if (WARN_ON(hdev->status & HID_STAT_ADDED))
@@ -2028,7 +2028,7 @@ int hid_add_device(struct hid_device *hd
 	/* XXX hack, any other cleaner solution after the driver core
 	 * is converted to allow more than 20 bytes as the device name? */
 	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
-		     hdev->vendor, hdev->product, atomic_inc_return(&id));
+		     hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id));
 
 	hid_debug_register(hdev, dev_name(&hdev->dev));
 	ret = device_add(&hdev->dev);
diff -NurpP --minimal linux-3.2.22/drivers/hid/usbhid/hiddev.c linux-3.2.22-g-v/drivers/hid/usbhid/hiddev.c
--- linux-3.2.22/drivers/hid/usbhid/hiddev.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hid/usbhid/hiddev.c	2012-07-11 20:20:37.297447106 +0200
@@ -624,7 +624,7 @@ static long hiddev_ioctl(struct file *fi
 		break;
 
 	case HIDIOCAPPLICATION:
-		if (arg < 0 || arg >= hid->maxapplication)
+		if (arg >= hid->maxapplication)
 			break;
 
 		for (i = 0; i < hid->maxcollection; i++)
diff -NurpP --minimal linux-3.2.22/drivers/hv/channel.c linux-3.2.22-g-v/drivers/hv/channel.c
--- linux-3.2.22/drivers/hv/channel.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hv/channel.c	2012-07-11 20:20:37.297447106 +0200
@@ -400,8 +400,8 @@ int vmbus_establish_gpadl(struct vmbus_c
 	int ret = 0;
 	int t;
 
-	next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle);
-	atomic_inc(&vmbus_connection.next_gpadl_handle);
+	next_gpadl_handle = atomic_read_unchecked(&vmbus_connection.next_gpadl_handle);
+	atomic_inc_unchecked(&vmbus_connection.next_gpadl_handle);
 
 	ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount);
 	if (ret)
diff -NurpP --minimal linux-3.2.22/drivers/hv/hv.c linux-3.2.22-g-v/drivers/hv/hv.c
--- linux-3.2.22/drivers/hv/hv.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hv/hv.c	2012-07-11 20:20:37.297447106 +0200
@@ -132,7 +132,7 @@ static u64 do_hypercall(u64 control, voi
 	u64 output_address = (output) ? virt_to_phys(output) : 0;
 	u32 output_address_hi = output_address >> 32;
 	u32 output_address_lo = output_address & 0xFFFFFFFF;
-	void *hypercall_page = hv_context.hypercall_page;
+	void *hypercall_page = ktva_ktla(hv_context.hypercall_page);
 
 	__asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
 			      "=a"(hv_status_lo) : "d" (control_hi),
diff -NurpP --minimal linux-3.2.22/drivers/hv/hyperv_vmbus.h linux-3.2.22-g-v/drivers/hv/hyperv_vmbus.h
--- linux-3.2.22/drivers/hv/hyperv_vmbus.h	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hv/hyperv_vmbus.h	2012-07-11 20:20:37.297447106 +0200
@@ -556,7 +556,7 @@ enum vmbus_connect_state {
 struct vmbus_connection {
 	enum vmbus_connect_state conn_state;
 
-	atomic_t next_gpadl_handle;
+	atomic_unchecked_t next_gpadl_handle;
 
 	/*
 	 * Represents channel interrupts. Each bit position represents a
diff -NurpP --minimal linux-3.2.22/drivers/hv/vmbus_drv.c linux-3.2.22-g-v/drivers/hv/vmbus_drv.c
--- linux-3.2.22/drivers/hv/vmbus_drv.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hv/vmbus_drv.c	2012-07-11 20:20:37.300635985 +0200
@@ -663,10 +663,10 @@ int vmbus_device_register(struct hv_devi
 {
 	int ret = 0;
 
-	static atomic_t device_num = ATOMIC_INIT(0);
+	static atomic_unchecked_t device_num = ATOMIC_INIT(0);
 
 	dev_set_name(&child_device_obj->device, "vmbus_0_%d",
-		     atomic_inc_return(&device_num));
+		     atomic_inc_return_unchecked(&device_num));
 
 	child_device_obj->device.bus = &hv_bus;
 	child_device_obj->device.parent = &hv_acpi_dev->dev;
diff -NurpP --minimal linux-3.2.22/drivers/hwmon/acpi_power_meter.c linux-3.2.22-g-v/drivers/hwmon/acpi_power_meter.c
--- linux-3.2.22/drivers/hwmon/acpi_power_meter.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hwmon/acpi_power_meter.c	2012-07-11 20:20:37.300635985 +0200
@@ -316,8 +316,6 @@ static ssize_t set_trip(struct device *d
 		return res;
 
 	temp /= 1000;
-	if (temp < 0)
-		return -EINVAL;
 
 	mutex_lock(&resource->lock);
 	resource->trip[attr->index - 7] = temp;
diff -NurpP --minimal linux-3.2.22/drivers/hwmon/sht15.c linux-3.2.22-g-v/drivers/hwmon/sht15.c
--- linux-3.2.22/drivers/hwmon/sht15.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/hwmon/sht15.c	2012-07-11 20:20:37.300635985 +0200
@@ -166,7 +166,7 @@ struct sht15_data {
 	int				supply_uV;
 	bool				supply_uV_valid;
 	struct work_struct		update_supply_work;
-	atomic_t			interrupt_handled;
+	atomic_unchecked_t		interrupt_handled;
 };
 
 /**
@@ -509,13 +509,13 @@ static int sht15_measurement(struct sht1
 		return ret;
 
 	gpio_direction_input(data->pdata->gpio_data);
-	atomic_set(&data->interrupt_handled, 0);
+	atomic_set_unchecked(&data->interrupt_handled, 0);
 
 	enable_irq(gpio_to_irq(data->pdata->gpio_data));
 	if (gpio_get_value(data->pdata->gpio_data) == 0) {
 		disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data));
 		/* Only relevant if the interrupt hasn't occurred. */
-		if (!atomic_read(&data->interrupt_handled))
+		if (!atomic_read_unchecked(&data->interrupt_handled))
 			schedule_work(&data->read_work);
 	}
 	ret = wait_event_timeout(data->wait_queue,
@@ -782,7 +782,7 @@ static irqreturn_t sht15_interrupt_fired
 
 	/* First disable the interrupt */
 	disable_irq_nosync(irq);
-	atomic_inc(&data->interrupt_handled);
+	atomic_inc_unchecked(&data->interrupt_handled);
 	/* Then schedule a reading work struct */
 	if (data->state != SHT15_READING_NOTHING)
 		schedule_work(&data->read_work);
@@ -804,11 +804,11 @@ static void sht15_bh_read_data(struct wo
 		 * If not, then start the interrupt again - care here as could
 		 * have gone low in meantime so verify it hasn't!
 		 */
-		atomic_set(&data->interrupt_handled, 0);
+		atomic_set_unchecked(&data->interrupt_handled, 0);
 		enable_irq(gpio_to_irq(data->pdata->gpio_data));
 		/* If still not occurred or another handler has been scheduled */
 		if (gpio_get_value(data->pdata->gpio_data)
-		    || atomic_read(&data->interrupt_handled))
+		    || atomic_read_unchecked(&data->interrupt_handled))
 			return;
 	}
 
diff -NurpP --minimal linux-3.2.22/drivers/i2c/busses/i2c-amd756-s4882.c linux-3.2.22-g-v/drivers/i2c/busses/i2c-amd756-s4882.c
--- linux-3.2.22/drivers/i2c/busses/i2c-amd756-s4882.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/i2c/busses/i2c-amd756-s4882.c	2012-07-11 20:20:37.300635985 +0200
@@ -43,7 +43,7 @@
 extern struct i2c_adapter amd756_smbus;
 
 static struct i2c_adapter *s4882_adapter;
-static struct i2c_algorithm *s4882_algo;
+static i2c_algorithm_no_const *s4882_algo;
 
 /* Wrapper access functions for multiplexed SMBus */
 static DEFINE_MUTEX(amd756_lock);
diff -NurpP --minimal linux-3.2.22/drivers/i2c/busses/i2c-nforce2-s4985.c linux-3.2.22-g-v/drivers/i2c/busses/i2c-nforce2-s4985.c
--- linux-3.2.22/drivers/i2c/busses/i2c-nforce2-s4985.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/i2c/busses/i2c-nforce2-s4985.c	2012-07-11 20:20:37.303927638 +0200
@@ -41,7 +41,7 @@
 extern struct i2c_adapter *nforce2_smbus;
 
 static struct i2c_adapter *s4985_adapter;
-static struct i2c_algorithm *s4985_algo;
+static i2c_algorithm_no_const *s4985_algo;
 
 /* Wrapper access functions for multiplexed SMBus */
 static DEFINE_MUTEX(nforce2_lock);
diff -NurpP --minimal linux-3.2.22/drivers/i2c/i2c-mux.c linux-3.2.22-g-v/drivers/i2c/i2c-mux.c
--- linux-3.2.22/drivers/i2c/i2c-mux.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/i2c/i2c-mux.c	2012-07-11 20:20:37.303927638 +0200
@@ -28,7 +28,7 @@
 /* multiplexer per channel data */
 struct i2c_mux_priv {
 	struct i2c_adapter adap;
-	struct i2c_algorithm algo;
+	i2c_algorithm_no_const algo;
 
 	struct i2c_adapter *parent;
 	void *mux_dev;	/* the mux chip/device */
diff -NurpP --minimal linux-3.2.22/drivers/ide/aec62xx.c linux-3.2.22-g-v/drivers/ide/aec62xx.c
--- linux-3.2.22/drivers/ide/aec62xx.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/aec62xx.c	2012-07-11 20:20:37.303927638 +0200
@@ -181,7 +181,7 @@ static const struct ide_port_ops atp86x_
 	.cable_detect		= atp86x_cable_detect,
 };
 
-static const struct ide_port_info aec62xx_chipsets[] __devinitdata = {
+static const struct ide_port_info aec62xx_chipsets[] __devinitconst = {
 	{	/* 0: AEC6210 */
 		.name		= DRV_NAME,
 		.init_chipset	= init_chipset_aec62xx,
diff -NurpP --minimal linux-3.2.22/drivers/ide/alim15x3.c linux-3.2.22-g-v/drivers/ide/alim15x3.c
--- linux-3.2.22/drivers/ide/alim15x3.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/alim15x3.c	2012-07-11 20:20:37.303927638 +0200
@@ -512,7 +512,7 @@ static const struct ide_dma_ops ali_dma_
 	.dma_sff_read_status	= ide_dma_sff_read_status,
 };
 
-static const struct ide_port_info ali15x3_chipset __devinitdata = {
+static const struct ide_port_info ali15x3_chipset __devinitconst = {
 	.name		= DRV_NAME,
 	.init_chipset	= init_chipset_ali15x3,
 	.init_hwif	= init_hwif_ali15x3,
diff -NurpP --minimal linux-3.2.22/drivers/ide/amd74xx.c linux-3.2.22-g-v/drivers/ide/amd74xx.c
--- linux-3.2.22/drivers/ide/amd74xx.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/amd74xx.c	2012-07-11 20:20:37.303927638 +0200
@@ -223,7 +223,7 @@ static const struct ide_port_ops amd_por
 		.udma_mask	= udma,					\
 	}
 
-static const struct ide_port_info amd74xx_chipsets[] __devinitdata = {
+static const struct ide_port_info amd74xx_chipsets[] __devinitconst = {
 	/* 0: AMD7401 */	DECLARE_AMD_DEV(0x00, ATA_UDMA2),
 	/* 1: AMD7409 */	DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4),
 	/* 2: AMD7411/7441 */	DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5),
diff -NurpP --minimal linux-3.2.22/drivers/ide/atiixp.c linux-3.2.22-g-v/drivers/ide/atiixp.c
--- linux-3.2.22/drivers/ide/atiixp.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/atiixp.c	2012-07-11 20:20:37.303927638 +0200
@@ -139,7 +139,7 @@ static const struct ide_port_ops atiixp_
 	.cable_detect		= atiixp_cable_detect,
 };
 
-static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
+static const struct ide_port_info atiixp_pci_info[] __devinitconst = {
 	{	/* 0: IXP200/300/400/700 */
 		.name		= DRV_NAME,
 		.enablebits	= {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
diff -NurpP --minimal linux-3.2.22/drivers/ide/cmd64x.c linux-3.2.22-g-v/drivers/ide/cmd64x.c
--- linux-3.2.22/drivers/ide/cmd64x.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/cmd64x.c	2012-07-11 20:20:37.307450222 +0200
@@ -327,7 +327,7 @@ static const struct ide_dma_ops cmd646_r
 	.dma_sff_read_status	= ide_dma_sff_read_status,
 };
 
-static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
+static const struct ide_port_info cmd64x_chipsets[] __devinitconst = {
 	{	/* 0: CMD643 */
 		.name		= DRV_NAME,
 		.init_chipset	= init_chipset_cmd64x,
diff -NurpP --minimal linux-3.2.22/drivers/ide/cs5520.c linux-3.2.22-g-v/drivers/ide/cs5520.c
--- linux-3.2.22/drivers/ide/cs5520.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/cs5520.c	2012-07-11 20:20:37.307450222 +0200
@@ -94,7 +94,7 @@ static const struct ide_port_ops cs5520_
 	.set_dma_mode		= cs5520_set_dma_mode,
 };
 
-static const struct ide_port_info cyrix_chipset __devinitdata = {
+static const struct ide_port_info cyrix_chipset __devinitconst = {
 	.name		= DRV_NAME,
 	.enablebits	= { { 0x60, 0x01, 0x01 }, { 0x60, 0x02, 0x02 } },
 	.port_ops	= &cs5520_port_ops,
diff -NurpP --minimal linux-3.2.22/drivers/ide/cs5530.c linux-3.2.22-g-v/drivers/ide/cs5530.c
--- linux-3.2.22/drivers/ide/cs5530.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/cs5530.c	2012-07-11 20:20:37.307450222 +0200
@@ -245,7 +245,7 @@ static const struct ide_port_ops cs5530_
 	.udma_filter		= cs5530_udma_filter,
 };
 
-static const struct ide_port_info cs5530_chipset __devinitdata = {
+static const struct ide_port_info cs5530_chipset __devinitconst = {
 	.name		= DRV_NAME,
 	.init_chipset	= init_chipset_cs5530,
 	.init_hwif	= init_hwif_cs5530,
diff -NurpP --minimal linux-3.2.22/drivers/ide/cs5535.c linux-3.2.22-g-v/drivers/ide/cs5535.c
--- linux-3.2.22/drivers/ide/cs5535.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/cs5535.c	2012-07-11 20:20:37.307450222 +0200
@@ -170,7 +170,7 @@ static const struct ide_port_ops cs5535_
 	.cable_detect		= cs5535_cable_detect,
 };
 
-static const struct ide_port_info cs5535_chipset __devinitdata = {
+static const struct ide_port_info cs5535_chipset __devinitconst = {
 	.name		= DRV_NAME,
 	.port_ops	= &cs5535_port_ops,
 	.host_flags	= IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE,
diff -NurpP --minimal linux-3.2.22/drivers/ide/cy82c693.c linux-3.2.22-g-v/drivers/ide/cy82c693.c
--- linux-3.2.22/drivers/ide/cy82c693.c	2012-07-04 06:44:35.000000000 +0200
+++ linux-3.2.22-g-v/drivers/ide/cy82c693.c	2012-07-11 20:20:37.307450222 +0200
@@ -163,7 +163,7 @@ static const struct ide_port_ops cy82c69
 	.set_dma_mode		= cy82c693_set_dma_mode,
 };
 
-static const struct ide_port_info cy82c693_chipset __devinitdata = {
+static const struct ide_port_info cy82c693_chipset __devinitconst = {
 	.