Commit-ID: 488ca7d72d974e3c00ae73ed9f947590680bdf00 Gitweb: http://git.kernel.org/tip/488ca7d72d974e3c00ae73ed9f947590680bdf00 Author: Tim Chen <tim.c.c...@linux.intel.com> AuthorDate: Fri, 21 Aug 2015 14:56:46 -0700 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Sat, 22 Aug 2015 11:17:31 +0200
x86/cpufeatures: Enable cpuid for Intel SHA extensions Add Intel CPUID for Intel Secure Hash Algorithm Extensions. This feature provides new instructions for accelerated computation of SHA-1 and SHA-256. This allows the feature to be shown in the /proc/cpuinfo for cpus that support it. Refer to SHA extension programming guide in chapter 8.2 of the Intel Architecture Instruction Set Extensions Programming reference for definition of this feature's cpuid: CPUID.(EAX=07H, ECX=0):EBX.SHA [bit 29] = 1 https://software.intel.com/sites/default/files/managed/07/b7/319433-023.pdf Originally-by: Chandramouli Narayanan <mouli_7...@yahoo.com> Signed-off-by: Tim Chen <tim.c.c...@linux.intel.com> Cc: Borislav Petkov <b...@suse.de> Cc: Dave Hansen <dave.han...@intel.com> Cc: Herbert Xu <herb...@gondor.apana.org.au> Link: http://lkml.kernel.org/r/1440194206.3940.6.camel@schen9-mobl2 Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- arch/x86/include/asm/cpufeature.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 3d6606f..a94f83d 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -239,6 +239,7 @@ #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 */ +#define X86_FEATURE_SHA_NI ( 9*32+29) /* SHA1/SHA256 Instruction Extensions */ /* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */ #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
