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    SubjectRe: [PULL] cpumask tree
    Ingo Molnar wrote:
    > * Ingo Molnar <mingo@elte.hu> wrote:
    >
    >> i suspect it's:
    >>
    >> | commit 2d22bd5e74519854458ad372a89006e65f45e628
    >> | Author: Mike Travis <travis@sgi.com>
    >> | Date: Wed Dec 31 18:08:46 2008 -0800
    >> |
    >> | x86: cleanup remaining cpumask_t code in microcode_core.c
    >>
    >> as the microcode is loaded during CPU onlining.
    >
    > yep, that's the bad one. Should i revert it or do you have a safe fix in
    > mind?
    >
    > Ingo

    Probably revert for now. There are a few more following patches that also
    use 'work_on_cpu' so a better (more global?) fix should be used.

    Any thought on using a recursive lock for cpu-hotplug-lock? (At least for
    get_online_cpus()?)

    Thanks,
    Mike


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