[Qemu-devel] [patch uq/master 1/2] virtio-pci: wake up iothread on VIRTIO_PCI_QUEUE_NOTIFY

[Marcelo Tosatti]

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 <address@hidden>
Signed-off-by: Marcelo Tosatti <address@hidden>

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;
     case VIRTIO_PCI_STATUS:
         vdev->status = val & 0xFF;