Messages in this thread Patch in this message | | | From | "Fenghua Yu" <> | Subject | [PATCH 1/2] x86/AVX-512: AVX-512 Feature Detection | Date | Thu, 20 Feb 2014 13:24:50 -0800 |
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From: Fenghua Yu <fenghua.yu@intel.com>
AVX-512 is an extention of AVX2. Its spec can be found at: http://download-software.intel.com/sites/default/files/managed/71/2e/319433-017.pdf
This patch detects AVX-512 features by CPUID.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> --- arch/x86/include/asm/cpufeature.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index e099f95..5f12968 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -217,9 +217,13 @@ #define X86_FEATURE_INVPCID (9*32+10) /* Invalidate Processor Context ID */ #define X86_FEATURE_RTM (9*32+11) /* Restricted Transactional Memory */ #define X86_FEATURE_MPX (9*32+14) /* Memory Protection Extension */ +#define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */ #define X86_FEATURE_RDSEED (9*32+18) /* The RDSEED instruction */ #define X86_FEATURE_ADX (9*32+19) /* The ADCX and ADOX instructions */ #define X86_FEATURE_SMAP (9*32+20) /* Supervisor Mode Access Prevention */ +#define X86_FEATURE_AVX512PF (9*32+26) /* AVX-512 Prefetch */ +#define X86_FEATURE_AVX512ER (9*32+27) /* AVX-512 Exponential and Reciprocal */ +#define X86_FEATURE_AVX512CD (9*32+28) /* AVX-512 Conflict Detection */ /* * BUG word(s) -- 1.8.1.2
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