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    SubjectRe: [PATCH -tip 2/2 resend] x86, traps: Drop nmi_reason_lock until it is really needed
    On 03/02/2011 07:03 PM, Ingo Molnar wrote:
    ...
    >
    > Well, the lock serializes the read-out of the 'NMI reason' port, the handling of
    > whatever known reason and then the reassertion of the NMI (on 32-bit).
    >
    > EDAC has a callback in pci_serr_error() - and this lock serializes that. So we
    > cannot just remove a lock like that, if there's any chance of parallel execution on
    > multiple CPUs.
    >
    > Thanks,
    >
    > Ingo

    OK, probably we need some UV person CC'ed (not sure whom) just to explain the
    reason for such nmi-listening model. Meanwhile -- lets drop my patch.

    --
    Cyrill


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