Re: [Qemu-devel] [PATCH] qemu: msi irq allocation api

[Blue Swirl]

On 5/20/09, Michael S. Tsirkin <address@hidden> wrote:
> define api for allocating/setting up msi-x irqs, and for updating them
>  with msi-x vector information, supply implementation in ioapic. Please
>  comment on this API: I intend to port my msi-x patch to work on top of
>  it.
>
>  Signed-off-by: Michael S. Tsirkin <address@hidden>

Sparc64 also uses packets ("mondos", not implemented yet) for
interrupt vector data, there the packet size is 8 * 64 bits. I think
we should aim for a more generic API that covers this case also.

For example, irq.c could support opaque packet payload of
unspecified/predefined size. MSI packet structure should be defined in
ioapic.c.

The pci_msi_ops structure could be 'const', or do you expect it to
change during execution?