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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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