Re: [Xen-devel] Re: [PATCH] Handle MSI irq storm

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 3/7/08 10:11, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

>  1. Push your INPROGRESS logic inside of hvm_do_IRQ_dpci() (you'll have to
> create new flag in place of using IRQ_INPROGRESS, obviously). Have
> hvm_do_IRQ_dpci() return one of three statuses: not handled, handled, and
> already pending. Don't bother clearing the flag in the hvm eoi function.
> It's not really a requirement for this scheme to work.

Errm, actually it *is* a requirement to clear the flag in the eoi function.
That's the whole point of how you'll detect spurious interrupts delivered to
HVM guests. Ignore my ridiculous last sentence above. :-)

 -- Keir



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