On 05/26/2011 10:03 PM, Sasha Levin wrote:
Hi Avi, I'm working on adding ioeventfd support into tools/kvm/. Currently the implementation creates ioeventfd entries at the 'VIRTIO_PCI_QUEUE_NOTIFY' of each device and waits on all of them using epoll(). The basics are working - when IO is triggered I receive a notification using the event instead of an exit. I couldn't find a way to retrieve the value written to the PIO port - the guest memory at that location doesn't change, 'reading' the event just returns 1 (as expected) and I couldn't find anything else which might suggest what value was written to the PIO port.
You can use KVM_IOEVENTFD_FLAG_DATAMATCH for that. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. -- 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
