On 2002.10.14 Paul P Komkoff Jr wrote:
>------------[ cut here ]------------
>kernel BUG at arch/i386/kernel/apm.c:1699!
>
>#ifdef CONFIG_SMP
> /* 2002/08/01 - WT
> * This is to avoid random crashes at boot time during initialization
> * on SMP systems in case of "apm=power-off" mode. Seen on ASUS A7M266D.
> * Some bioses don't like being called from CPU != 0.
> * Method suggested by Ingo Molnar.
> */
> if (smp_processor_id() != 0) {
> current->cpus_allowed = 1;
> schedule();
> if (unlikely(smp_processor_id() != 0))
> BUG();
> }
>#endif
>
>Why ? :()
>
>2.5.42-mm2, 2xPPro-233, etc ...
>
Bug in apm vs O1-scheduler. The apm task is moved from processor 0.
I took the fix from -ac tree. Just diff kernel/apm.c from -mm and from
-ac. That worked for me for 2.4 kernels. Perhaps 2.5 needs some additional
fix in other files. (err, I suppose that fix is in Alan's 2.5 tee also...)
Hope this helps.
Anyways, patch for 2.4 attached. I suppose it won't apply on 2.5, but you
can try...
-- J.A. Magallon <jamagallon@able.es> \ Software is like sex: werewolf.able.es \ It's better when it's free Mandrake Linux release 9.1 (Cooker) for i586 Linux 2.4.20-pre10-jam1 (gcc 3.2 (Mandrake Linux 9.0 3.2-2mdk))
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