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    SubjectRe: [PATCH] Fix the race between smp_call_function and CPU booting
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    On Mon, 2012-03-12 at 09:27 +0000, Liu, Chuansheng wrote:
    > The solution is just to send smp call to active cpus instead of online
    > cpus.

    BTW, that solution is broken because !active cpus can still be online
    and actually running stuff, so sending IPIs to them is perfectly fine
    and actually required.




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