Re: 2.6.17-rc5-mm1

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> wrote:

> > do_IRQ() did a jump-to-zero.  So there's no handler installed.
> 
> yep. No desc->irq_handler. That should be 'impossible' on x86_64, 
> because the irq_desc[] array is initialized with handle_bad_irq, and 
> from that point on x86_64 only uses set_irq_chip_and_handler(), which 
> at most can set it to another (non-NULL) handle_irq function. Weird.
> 
> does MSI much with the irq_desc[] separately perhaps, clearing 
> handle_irq in the process perhaps?

aha - drivers/pci/msi.c sets msix_irq_type, which has no handle_irq 
entry. This needs to be converted to irqchips.

	Ingo
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