[RFC/PATCH 4/7] Powerpc MSI implementation

[Eric W. Biederman]

Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:

>> For message signalled interrupts and hyptertransport interrupts we probably
> want
>> to add an additional field for pointing to their per irq state.  Per device
>> interrupt controllers are truly peculiar.
>
> A per-irq addition field for the MSI data might indeed be useful. I
> still want to store it in the pci_dev, but it would be good to have a
> pointer to it in the irq_desc.

The msi_info in pci_dev is reasonable.  But storing all 4096 possible
msi_desc's in pci_dev seems a little much.

Hopefully I can look at this a little more this evening and see what we
need to do to harmonize the two msi implementations.

Eric