diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
commit | ea62ccd00fd0b6720b033adfc9984f31130ce195 (patch) | |
tree | 9837b797b2466fffcb0af96c388b06eae9c3df18 /include/asm-i386/alternative.h | |
parent | 886a0768affe9a32f18c45f8e1393bca9ece5392 (diff) | |
parent | 35060b6a9a4e1c89bc6fbea61090e302dbc61847 (diff) |
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
[PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
[PATCH] i386: type may be unused
[PATCH] i386: Some additional chipset register values validation.
[PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
[PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
[PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
[PATCH] i386: white space fixes in i387.h
[PATCH] i386: Drop noisy e820 debugging printks
[PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
[PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
[PATCH] x86-64: Share identical video.S between i386 and x86-64
[PATCH] x86-64: Remove CONFIG_REORDER
[PATCH] x86-64: Print type and size correctly for unknown compat ioctls
[PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
[PATCH] i386: Little cleanups in smpboot.c
[PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
[PATCH] i386: Add X86_FEATURE_RDTSCP
[PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
[PATCH] i386: Implement alternative_io for i386
...
Fix up trivial conflict in include/linux/highmem.h manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-i386/alternative.h')
-rw-r--r-- | include/asm-i386/alternative.h | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/include/asm-i386/alternative.h b/include/asm-i386/alternative.h index b8fa9557c53..0f70b379b02 100644 --- a/include/asm-i386/alternative.h +++ b/include/asm-i386/alternative.h @@ -1,8 +1,6 @@ #ifndef _I386_ALTERNATIVE_H #define _I386_ALTERNATIVE_H -#ifdef __KERNEL__ - #include <asm/types.h> #include <linux/stddef.h> #include <linux/types.h> @@ -16,6 +14,7 @@ struct alt_instr { u8 pad; }; +extern void alternative_instructions(void); extern void apply_alternatives(struct alt_instr *start, struct alt_instr *end); struct module; @@ -31,9 +30,7 @@ static inline void alternatives_smp_module_add(struct module *mod, char *name, void *text, void *text_end) {} static inline void alternatives_smp_module_del(struct module *mod) {} static inline void alternatives_smp_switch(int smp) {} -#endif - -#endif +#endif /* CONFIG_SMP */ /* * Alternative instructions for different CPU types or capabilities. @@ -85,6 +82,21 @@ static inline void alternatives_smp_switch(int smp) {} "663:\n\t" newinstr "\n664:\n" /* replacement */\ ".previous" :: "i" (feature), ##input) +/* Like alternative_input, but with a single output argument */ +#define alternative_io(oldinstr, newinstr, feature, output, input...) \ + asm volatile ("661:\n\t" oldinstr "\n662:\n" \ + ".section .altinstructions,\"a\"\n" \ + " .align 4\n" \ + " .long 661b\n" /* label */ \ + " .long 663f\n" /* new instruction */ \ + " .byte %c[feat]\n" /* feature bit */ \ + " .byte 662b-661b\n" /* sourcelen */ \ + " .byte 664f-663f\n" /* replacementlen */ \ + ".previous\n" \ + ".section .altinstr_replacement,\"ax\"\n" \ + "663:\n\t" newinstr "\n664:\n" /* replacement */ \ + ".previous" : output : [feat] "i" (feature), ##input) + /* * Alternative inline assembly for SMP. * @@ -118,15 +130,17 @@ static inline void alternatives_smp_switch(int smp) {} #define LOCK_PREFIX "" #endif -struct paravirt_patch; +struct paravirt_patch_site; #ifdef CONFIG_PARAVIRT -void apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end); +void apply_paravirt(struct paravirt_patch_site *start, + struct paravirt_patch_site *end); #else static inline void -apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end) +apply_paravirt(struct paravirt_patch_site *start, + struct paravirt_patch_site *end) {} -#define __start_parainstructions NULL -#define __stop_parainstructions NULL +#define __parainstructions NULL +#define __parainstructions_end NULL #endif #endif /* _I386_ALTERNATIVE_H */ |