On 09/16/2010 03:38 PM, Michael S. Tsirkin wrote:
> > That's just an implementation detail. Devices either assert INT# or > they do not. Tying the wires together constitutes an AND gate. > This gate has to be modelled somewhere, currently it's in qemu's pci > emulation. Right. kvm in kernel has this as well, we need to keep this in kvm kernel if we want to support level with irqfd.
Right, we added the irq_source_id hack for device assignment. What's wrong with letting userspace mediate this, though?
Where it does not belong is individual devices: these should be able to assert INTx multiple times and it should have no effect, as per spec.
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