Re: [Qemu-ppc] [PATCH 2/3] KVM: add kvm_arch_irqchip_add_msi_route

[Benjamin Herrenschmidt]

On Fri, 2013-06-21 at 15:46 +0200, Alexander Graf wrote:
> Not sure. We could just declare a "direct virq==irq" mode in which
> msi.data == virq == irq. No need for any translation then.

Maybe. Beware that MSI data is only 16-bit on the wire but we may not
care here.

One thing I'm not 100% certain of is how Alexey makes all that work with
VFIO since the MSI address/data in the device shall not be the qemu
"cooked up" ones, but the real HW ones (corresponding to a different
host interrupt).

How do that work ?

Cheers,
Ben.