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Re: [PATCH v6 04/34] x86/CPU/AMD: Add the Secure Memory Encryption CPU feature

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  Re: [PATCH v6 04/34] x86/CPU/AMD: Add the Secure Memory Encryption  CPU feature Borislav Petkov <bp@alien8.de> - 2017-06-09 13:00 +0200

#1662288 — Re: [PATCH v6 04/34] x86/CPU/AMD: Add the Secure Memory Encryption CPU feature

On Wed, Jun 07, 2017 at 02:13:53PM -0500, Tom Lendacky wrote:
> Update the CPU features to include identifying and reporting on the
> Secure Memory Encryption (SME) feature.  SME is identified by CPUID
> 0x8000001f, but requires BIOS support to enable it (set bit 23 of
> MSR_K8_SYSCFG).  Only show the SME feature as available if reported by
> CPUID and enabled by BIOS.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> ---
>  arch/x86/include/asm/cpufeatures.h |    1 +
>  arch/x86/include/asm/msr-index.h   |    2 ++
>  arch/x86/kernel/cpu/amd.c          |   13 +++++++++++++
>  arch/x86/kernel/cpu/scattered.c    |    1 +
>  4 files changed, 17 insertions(+)

Reviewed-by: Borislav Petkov <bp@suse.de>

-- 
Regards/Gruss,
    Boris.

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