Re: [Xen-devel] [VTD][PATCH] Support intra-domain shared interrupt

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 5/11/07 08:16, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:

> Current data structure hvm_irq_dpci_mapping
> doesn't consider this situation, mirq[i] contains only one device and
> corresponding guest irq, need to add a list to contain multiple devices
> whice share physical interrupt.

The reverse is also true I believe: you can have two devices with different
physical IRQs getting aliased to the same guest GSI. Is that a problem?
e.g., do you need the reverse mapping from guest GSI to physical IRQ or
physical device (I'd guess you do, to work out what to do when the guest GSI
is EOIed)?

> What's more, we need to deal with
> intra-domain shared interrupt injection and eoi specially.

How?

 -- Keir



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