Jeroen Van den Keybus wrote:
>     Now looking into xnintr_attach().
> In xnintr_attach(), the crash occurs in xnarch_set_irq_affinity(). If
> the call is removed, the driver works as expected (gaining another 3
> usec of latency). Now investigating ipipe_set_irq_affinity.

arch_setup_msi_irq() creates an IRQ on-the-fly from the current
descriptor which is being converted to an MSI interrupt using
pci_msi_enable(). From that point, the I-pipe might have an obsolete
view of the interrupt map. I suspect an I-pipe issue here.


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