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authorVenki Pallipadi <venkatesh.pallipadi@intel.com>2008-10-07 13:33:12 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-31 11:01:40 +0100
commit2576c9991758e431b73e374f6019d6e1e12a8d36 (patch)
tree43bf5402e3cef3af33d36c9ff382dbb9cc7855d6
parentb342797c1e5116a130841527b47dfaa462ed0968 (diff)
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>
-rw-r--r--arch/x86/include/asm/cpufeature.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index f73e95d75b4..cfdf8c2c5c3 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 */