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

Paul Brook wrote:

quoted

The PCI bus doesn't need any special support (I think) but something on
the other end needs to interpret those writes.
    

Sure. But there's definitely nothing PCI specific about it. I assumed this 
would all be contained within the APIC.
  

MSIs are defined by PCI and their configuration is done using the PCI 
configuration space.

quoted

In any case we need some internal API for this, and qemu_irq looks like
a good choice.
    

What do you expect to be using this API?
  

virtio, emulated devices capable of supporting MSI (e1000?), device 
assignment (not yet in qemu.git).

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