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

[Gunther Persoons]

Ingo Molnar wrote:

> * Ingo Molnar <mingo@xxxxxxx> 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
>
>  
It locked up after 20 minutes with CONFIG_SMP enabled.
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