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    SubjectRE: [PATCH] x86, MCE: Kill CPU_POST_DEAD
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    >> So I think we can reduce it to just the one rwsem (with recursion) if we
    >> shoot CPU_POST_DEAD in the head.
    >
    > Here's the first bullet. Stressing my box here with Steve's hotplug
    > script seems to work fine.
    >
    > Tony, any objections?

    what was this comment referring to:

    /* intentionally ignoring frozen here */

    After you move the cmci_rediscover() call, it is now in a place where we are
    no longer ignoring frozen (i.e. the old placement did the rediscover even if the
    CPU_TASKS_FROZEN bit was set - with the new placement we will skip rediscovery.

    So we were working around some interaction between cpu hotplug and frozen.
    Do we no longer need to do that?

    -Tony

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