leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86, AVX-512: AVX-512 Feature Detection

Browse Source 
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
This commit is contained in:
Fenghua Yu 2014-02-20 13:24:50 -08:00 committed by H. Peter Anvin
parent 6d0abeca32
commit 8e5780fdee
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/cpufeature.h
View File

@ -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)