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    SubjectRe: [PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs
    On Tue, Aug 17, 2010 at 12:55:25AM +0200, Robert Richter wrote:
    > On 16.08.10 15:06:59, Cyrill Gorcunov wrote:
    > > I suspect Peter was supposed to be in To: field ;)
    >
    > It was the attempt to answer 2 mails with one. :)
    >

    ah, I see ;)

    > > Robert, I think we still may miss unknown irq, consider the case when
    > > unknown nmi is latched while you handle nmi from perf and what is
    > > more interesting several counters may be overflowed. So you set
    > > delta small enough and second (unknown nmi) will be in range and
    > > treated as being perf back-to-back, or I miss something from patch?
    >
    > Yes, that's true, but before you have to enable your Infinite
    > Improbability Drive.
    >

    not at all, it's absolutely legit to happen ;)

    > -Robert
    >
    > --
    > Advanced Micro Devices, Inc.
    > Operating System Research Center
    >
    -- Cyrill


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