On Sat, Jun 16, 2012 at 10:34:39AM -0600, Alex Williamson wrote: > I'm looking for opinions on this approach. For vfio device assignment > we minimally need a way to get EOIs from the in-kernel irqchip out to > userspace. Getting that out via an eventfd would allow us to bounce > all level interrupts out to userspace, where we would de-assert the > device interrupt in qemu and unmask the physical device. Ideally we > could deassert the interrupt in KVM, which allows us to send the EOI > directly to vfio. To do that, we need to use a new IRQ source ID so > the guest sees the logical OR of qemu requested state and external > device state. Given that yopu want to involve userspace anyway, why insist on irqfd for this? You can simply use KVM_IRQ_LINE_STATUS from qemu, no? -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
