diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-16 14:59:24 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 15:01:15 -0500 |
| commit | d4377974062122d6d9be0bbd8a910a0954714194 (patch) | |
| tree | a044b2e54325a43ec6e762c02ff53e0297b0bd2e | |
| parent | dd7a5230cd651bfb119d222561c4032f30dd5659 (diff) | |
x86: support always running TSC on Intel CPUs, add cpufeature definition
Impact: add new synthetic-cpuid bit definition
add X86_FEATURE_NONSTOP_TSC to the cpufeature bits - this is in
preparation of Venki's always-running-TSC patch.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 5bce8ed02b44..ea408dcba513 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h | |||
| @@ -92,6 +92,7 @@ | |||
| 92 | #define X86_FEATURE_AMDC1E (3*32+21) /* AMD C1E detected */ | 92 | #define X86_FEATURE_AMDC1E (3*32+21) /* AMD C1E detected */ |
| 93 | #define X86_FEATURE_XTOPOLOGY (3*32+22) /* cpu topology enum extensions */ | 93 | #define X86_FEATURE_XTOPOLOGY (3*32+22) /* cpu topology enum extensions */ |
| 94 | #define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */ | 94 | #define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */ |
| 95 | #define X86_FEATURE_NONSTOP_TSC (3*32+24) /* TSC does not stop in C states */ | ||
| 95 | 96 | ||
| 96 | /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ | 97 | /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ |
| 97 | #define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ | 98 | #define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */ |