x86, AVX-512: AVX-512 Feature Detection

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>
Link: http://lkml.kernel.org/r/1392931491-33237-1-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # hw enabling

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index e099f9502acec86cb5ec1412745d90384820e625..5f1296872aed61589515e03ac827522dbdf8ce0d 100644 (file)
--- 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)