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    SubjectRe: [PATCH V3]hrtimer: Fix a performance regression by disable reprogramming in remove_hrtimer
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    On Thu, 2013-12-12 at 22:14 +0800, Ethan Zhao wrote: 
    > Mike,
    > it seems the IPI issue got root cause (cpu hardware errata ) now ?
    > I only catch some pieces of the mails, is that to say the crazy horse
    > made by Intel will wake up unexpected, and eat too much reschedule
    > IPI, then the horse got hotter, performance down, and so the fix would
    > be a 'CFLUSH' to all the buggy CPU, is that right ?

    You're mixing a couple different issues together, but yeah, close
    enough. The barking amazonian tree guppy is being saved as we speak.

    -Mike



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