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SubjectRe: [BUG] 2.6.25-rc3-mm1 kernel panic while bootup on powerpc ()
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On Tue, 2008-03-04 at 10:33 -0800, Andrew Morton wrote:
> > Are we somehow enabling interrupts before we've setup
> ppc_md.get_irq?
> >
>
> Yes, we are - it's the semaphore rewrite which is doing this in
> start_kernel(). It's being discussed.
>
> Enabling interrupts too early on powerpc was discovered to be fatal on
> powerpc years ago. It looks like that remains the case.

Yes, it is and will probably always be. All that semaphore mucking
around that hard-enables interrupts is just asking for trouble (and on
more than just powerpc... heh, how do you do if your main interrupt
controller hasn't even been initialized yet ?)

Ben.




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