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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-0

    * Ingo Molnar <mingo@elte.hu> wrote:

    > just in case you are using UP-IOAPIC, could you enable CONFIG_SMP
    > (even if you are running an UP box) and see whether the lockup goes
    > away? Which was the last -RT kernel that you tried that didnt lock up
    > in this fashion?

    if with CONFIG_SMP it's more stable, could you try the following: turn
    off CONFIG_SMP again and edit arch/i386/kernel/io_apic.c and remove this
    string:

    && defined(CONFIG_SMP)

    (there should be only one occurence of this string.)

    this will turn the previous IO-APIC logic (used in -V0.7.24) back on.

    Ingo
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