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Commit b581af51 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/i386: Put aligned stack-canary in percpu shared_aligned section
  x86/i386: Make sure stack-protector segment base is cache aligned
  x86: Detect stack protector for i386 builds on x86_64
  x86: allow "=rm" in native_save_fl()
  x86: properly annotate alternatives.c
  x86: Introduce GDT_ENTRY_INIT(), initialize bad_bios_desc statically
  x86, 32-bit: Use generic sys_pipe()
  x86: Introduce GDT_ENTRY_INIT(), fix APM
  x86: Introduce GDT_ENTRY_INIT()
  x86: Introduce set_desc_base() and set_desc_limit()
  x86: Remove unused patch_espfix_desc()
  x86: Use get_desc_base()
parents ffaf854b 53f82452

arch/x86/Makefile

+1 −1
Original line number Original line Diff line number Diff line
@@ -72,7 +72,7 @@ endif 




ifdef CONFIG_CC_STACKPROTECTOR

ifdef CONFIG_CC_STACKPROTECTOR

	cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh

	cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh

        ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC)),y)

        ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(biarch)),y)

                stackp-y := -fstack-protector

                stackp-y := -fstack-protector

                stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all

                stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all

                KBUILD_CFLAGS += $(stackp-y)

                KBUILD_CFLAGS += $(stackp-y)

arch/x86/ia32/ia32entry.S

+1 −1
Original line number Original line Diff line number Diff line
@@ -537,7 +537,7 @@ ia32_sys_call_table: 
	.quad sys_mkdir

	.quad sys_mkdir

	.quad sys_rmdir		/* 40 */

	.quad sys_rmdir		/* 40 */

	.quad sys_dup

	.quad sys_dup

	.quad sys32_pipe

	.quad sys_pipe

	.quad compat_sys_times

	.quad compat_sys_times

	.quad quiet_ni_syscall			/* old prof syscall holder */

	.quad quiet_ni_syscall			/* old prof syscall holder */

	.quad sys_brk		/* 45 */

	.quad sys_brk		/* 45 */

arch/x86/ia32/sys_ia32.c

+0 −14
Original line number Original line Diff line number Diff line
@@ -189,20 +189,6 @@ asmlinkage long sys32_mprotect(unsigned long start, size_t len, 
	return sys_mprotect(start, len, prot);

	return sys_mprotect(start, len, prot);

}

}





asmlinkage long sys32_pipe(int __user *fd)

{

	int retval;

	int fds[2];



	retval = do_pipe_flags(fds, 0);

	if (retval)

		goto out;

	if (copy_to_user(fd, fds, sizeof(fds)))

		retval = -EFAULT;

out:

	return retval;

}



asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act,

asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act,

				   struct sigaction32 __user *oact,

				   struct sigaction32 __user *oact,

				   unsigned int sigsetsize)

				   unsigned int sigsetsize)

arch/x86/include/asm/alternative.h

+0 −7
Original line number Original line Diff line number Diff line
@@ -73,8 +73,6 @@ static inline void alternatives_smp_module_del(struct module *mod) {} 
static inline void alternatives_smp_switch(int smp) {}

static inline void alternatives_smp_switch(int smp) {}

#endif	/* CONFIG_SMP */

#endif	/* CONFIG_SMP */





const unsigned char *const *find_nop_table(void);



/* alternative assembly primitive: */

/* alternative assembly primitive: */

#define ALTERNATIVE(oldinstr, newinstr, feature)			\

#define ALTERNATIVE(oldinstr, newinstr, feature)			\

									\

									\
@@ -144,8 +142,6 @@ static inline void apply_paravirt(struct paravirt_patch_site *start, 
#define __parainstructions_end	NULL

#define __parainstructions_end	NULL

#endif

#endif





extern void add_nops(void *insns, unsigned int len);



/*

/*

 * Clear and restore the kernel write-protection flag on the local CPU.

 * Clear and restore the kernel write-protection flag on the local CPU.

 * Allows the kernel to edit read-only pages.

 * Allows the kernel to edit read-only pages.
@@ -161,10 +157,7 @@ extern void add_nops(void *insns, unsigned int len); 
 * Intel's errata.

 * Intel's errata.

 * On the local CPU you need to be protected again NMI or MCE handlers seeing an

 * On the local CPU you need to be protected again NMI or MCE handlers seeing an

 * inconsistent instruction while you patch.

 * inconsistent instruction while you patch.

 * The _early version expects the memory to already be RW.

 */

 */



extern void *text_poke(void *addr, const void *opcode, size_t len);

extern void *text_poke(void *addr, const void *opcode, size_t len);

extern void *text_poke_early(void *addr, const void *opcode, size_t len);





#endif /* _ASM_X86_ALTERNATIVE_H */
 
#endif /* _ASM_X86_ALTERNATIVE_H */

arch/x86/include/asm/desc.h

+13 −0
Original line number Original line Diff line number Diff line
@@ -291,11 +291,24 @@ static inline unsigned long get_desc_base(const struct desc_struct *desc) 
	return desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24);

	return desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24);

}

}





static inline void set_desc_base(struct desc_struct *desc, unsigned long base)

{

	desc->base0 = base & 0xffff;

	desc->base1 = (base >> 16) & 0xff;

	desc->base2 = (base >> 24) & 0xff;

}



static inline unsigned long get_desc_limit(const struct desc_struct *desc)

static inline unsigned long get_desc_limit(const struct desc_struct *desc)

{

{

	return desc->limit0 | (desc->limit << 16);

	return desc->limit0 | (desc->limit << 16);

}

}





static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit)

{

	desc->limit0 = limit & 0xffff;

	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, void *addr,

			     unsigned dpl, unsigned ist, unsigned seg)

			     unsigned dpl, unsigned ist, unsigned seg)

{

{