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    SubjectRe: [PATCH] x86/mce: Enable additional error logging on certain Intel CPUs
    On Fri, Oct 30, 2020 at 12:08:07PM -0700, Luck, Tony wrote:
    > On Fri, Oct 30, 2020 at 12:04:03PM -0700, Luck, Tony wrote:
    >
    > Bah, didn't notice this conversation didn't include LKML.
    >
    > > The Xeon versions of Sandy Bridge, Ivy Bridge and Haswell support an
    > > optional additional error logging mode which is enabled by an MSR.
    > >
    > > Previously this mode was enabled from the mcelog(8) tool via /dev/cpu,
    > > but the kernel is now very picky about which MSRs may be written. So
    > > move the enabling into the kernel.
    > >
    > > Suggested-by: Boris Petkov <bp@alien8.de>
    > > Signed-off-by: Tony Luck <tony.luck@intel.com>
    > > ---
    > >
    > > N.B. I don't have any of these old systems in my lab any more. So
    > > this is untested :-(

    I do:

    # rdmsr 0x0000017f
    2

    Thx for doing this, queued.

    --
    Regards/Gruss,
    Boris.

    https://people.kernel.org/tglx/notes-about-netiquette

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