Re: [PATCH] sha: Enable cpuid check for Intel SHA extensions implementations

From: Thomas Gleixner
Date: Tue Aug 18 2015 - 12:47:34 EST


On Mon, 17 Aug 2015, Tim Chen wrote:
> Signed-off-by: Chandramouli Narayanan <mouli@xxxxxxxxxxxxxxx>
> Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>

And now the question who authored this complex one liner ....

> ---
> 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 */
> --
> 1.8.3.1
>
>
>
>
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