diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-05-18 20:59:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-18 20:59:30 +0200 |
| commit | 01ed58abec07633791f03684b937a7e22e00c9bb (patch) | |
| tree | 7bb5b60c102aa08e404928ffcb3edf1e8404b5a2 /arch/x86/include/asm | |
| parent | af2d03d4aaa847ef41a229dfee098a47908437c6 (diff) | |
| parent | 26afb7c661080ae3f1f13ddf7f0c58c4f931c22b (diff) | |
Merge branch 'x86/mem' into perf/core
Merge reason: memcpy_64.S changes an assumption perf bench has, so merge this
here so we can fix it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/alternative-asm.h | 9 | ||||
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/uaccess.h | 2 |
3 files changed, 11 insertions, 1 deletions
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h index a63a68be1cc..94d420b360d 100644 --- a/arch/x86/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -15,4 +15,13 @@ .endm #endif +.macro altinstruction_entry orig alt feature orig_len alt_len + .align 8 + .quad \orig + .quad \alt + .word \feature + .byte \orig_len + .byte \alt_len +.endm + #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 91f3e087cf2..7f2f7b12329 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -195,6 +195,7 @@ /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */ #define X86_FEATURE_FSGSBASE (9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/ +#define X86_FEATURE_ERMS (9*32+ 9) /* Enhanced REP MOVSB/STOSB */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index abd3e0ea762..99f0ad753f3 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -42,7 +42,7 @@ * Returns 0 if the range is valid, nonzero otherwise. * * This is equivalent to the following test: - * (u33)addr + (u33)size >= (u33)current->addr_limit.seg (u65 for x86_64) + * (u33)addr + (u33)size > (u33)current->addr_limit.seg (u65 for x86_64) * * This needs 33-bit (65-bit for x86_64) arithmetic. We have a carry... */ |