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| author | Venki Pallipadi <venkatesh.pallipadi@intel.com> | 2008-10-07 13:33:12 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-31 11:01:40 +0100 |
| commit | 2576c9991758e431b73e374f6019d6e1e12a8d36 (patch) | |
| tree | 43bf5402e3cef3af33d36c9ff382dbb9cc7855d6 /arch | |
| parent | b342797c1e5116a130841527b47dfaa462ed0968 (diff) | |
| download | linux-2576c9991758e431b73e374f6019d6e1e12a8d36.tar.gz linux-2576c9991758e431b73e374f6019d6e1e12a8d36.tar.bz2 linux-2576c9991758e431b73e374f6019d6e1e12a8d36.zip | |
x86: fix AMDC1E and XTOPOLOGY conflict in cpufeature
Impact: fix xsave slowdown regression
Fix two features from conflicting in feature bits.
Fixes this performance regression:
Subject: cpu2000(both float and int) 13% regression with 2.6.28-rc1
http://lkml.org/lkml/2008/10/28/36
Reported-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Bisected-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index f73e95d75b45..cfdf8c2c5c31 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -91,7 +91,7 @@ #define X86_FEATURE_11AP (3*32+19) /* "" Bad local APIC aka 11AP */ #define X86_FEATURE_NOPL (3*32+20) /* The NOPL (0F 1F) instructions */ #define X86_FEATURE_AMDC1E (3*32+21) /* AMD C1E detected */ -#define X86_FEATURE_XTOPOLOGY (3*32+21) /* cpu topology enum extensions */ +#define X86_FEATURE_XTOPOLOGY (3*32+22) /* cpu topology enum extensions */ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ #define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ |