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SubjectRe: [PATCH 2/2] x86_64 irq: Handle irqs pending in IRR during irq migration.
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> > Once the migration operation is complete we know we will receive
> > no more interrupts on this vector so the irq pending state for
> > this irq will no longer be updated. If the irq is not pending and
> > we are in the intermediate state we immediately free the vector,
> > otherwise in we free the vector in do_IRQ when the pending irq
> > arrives.
>
> So is this a for-2.6.20 thing? The bug was present in 2.6.19, so
> I assume it doesn't affect many people?

I got a few reports of this; irqbalance may trigger this kernel bug it
seems... I would suggest to consider this for 2.6.20 since it's a
hard-hang case

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