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    SubjectRe: [RFC PATCH v4 03/28] x86: Add the Secure Memory Encryption CPU feature
    On Thu, Feb 16, 2017 at 09:42:36AM -0600, 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
    > SYS_CFG MSR). 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/cpufeature.h | 7 +++++--
    > arch/x86/include/asm/cpufeatures.h | 5 ++++-
    > arch/x86/include/asm/disabled-features.h | 3 ++-
    > arch/x86/include/asm/msr-index.h | 2 ++
    > arch/x86/include/asm/required-features.h | 3 ++-
    > arch/x86/kernel/cpu/common.c | 19 +++++++++++++++++++
    > 6 files changed, 34 insertions(+), 5 deletions(-)

    What happened here?

    You had it already:

    https://lkml.kernel.org/r/20161110003459.3280.25796.stgit@tlendack-t1.amdoffice.net

    The bit in get_cpu_cap() with checking the MSR you can add at the end of
    init_amd() for example.

    --
    Regards/Gruss,
    Boris.

    Good mailing practices for 400: avoid top-posting and trim the reply.

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