On 02/22/2010 03:59 PM, Marcelo Tosatti wrote:
VIRTIO_PCI_QUEUE_NOTIFY is used to inform availability of new buffers, so wakeup the iothread to process that information immediately.Reported-by: Amit Shah<amit.s...@redhat.com> Signed-off-by: Marcelo Tosatti<mtosa...@redhat.com> Index: qemu/hw/virtio-pci.c =================================================================== --- qemu.orig/hw/virtio-pci.c +++ qemu/hw/virtio-pci.c @@ -204,6 +204,7 @@ static void virtio_ioport_write(void *op break; case VIRTIO_PCI_QUEUE_NOTIFY: virtio_queue_notify(vdev, val); + qemu_notify_event(); break;
virtio_queue_notify() will call ->handle_output(), which should either do what's needed to be done, or wake up some iothread itself.
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