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    SubjectRe: 2.6.17-rc6-mm1
    Andi Kleen wrote:
    > I don't see an explicit check in alternatives.c for the main kernel
    > vs init sections and with CPU hotplug the alternatives can be applied
    > arbitarily after the system has booted. So it would just stomp
    > over the init text pages which are used for something else now.

    very close to the end of the file:

    alternatives_smp_module_add(NULL, "core kernel",
    __smp_locks, __smp_locks_end,
    _text, _etext);

    The core kernel is just a "special" module (where we keep track of the
    .text section boundaries too), and LOCKs outside the _text -> _etext
    range are never ever patched.



    Gerd Hoffmann <>
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