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    SubjectRe: [PATCH v5 28/28] x86/fpu/amx: Clear the AMX state when appropriate
    On Mon, May 24, 2021 at 10:10 AM Dave Hansen <dave.hansen@intel.com> wrote:

    > On 5/23/21 8:13 PM, Andy Lutomirski wrote:
    > >
    > > Can we do this just when going idle?
    >
    > Chang, you might also want to talk with folks that do scheduler
    > performance work (I've cc'd Tim). I know we're always fighting to trim
    > down the idle and wakeup paths. There might be no other alternative,
    > but unconditionally forcing an AMX XRSTOR on return from idle might be
    > considered nasty.

    I'm not excited about burdening the generic idle path with a CPU
    feature specific check
    that would need to be checked on every idle entry.

    thanks,
    Len Brown, Intel Open Source Technology Center

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