commit b8193adbda922659ba290fd9fb6ee053ee191d70
author Michael S. Tsirkin <mst@redhat.com> Mon Sep 07 21:20:15 2009 +0300
committer Anthony Liguori <aliguori@us.ibm.com> Fri Sep 11 10:19:46 2009 -0500
tree a2713572832003a6345a02ec2216cbbf69b081dd
parent 711bf3d954371abffc07e397fc868a9c9e7e5585

qemu: init all queues to NO_VECTOR value

initialize vectors for all vqs to VIRTIO_NO_VECTOR rather than 0 which
is a valid vector. This fixes migration which happened before driver
was loaded.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by: Amit Shah <amit.shah@redhat.com>
Tested-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/virtio.c

diff --git a/hw/virtio.c b/hw/virtio.c
index 41e7ca2..337ff27 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -694,6 +694,7 @@
                                  size_t config_size, size_t struct_size)
 {
     VirtIODevice *vdev;
+    int i;
 
     vdev = qemu_mallocz(struct_size);
 
@@ -703,6 +704,8 @@
     vdev->queue_sel = 0;
     vdev->config_vector = VIRTIO_NO_VECTOR;
     vdev->vq = qemu_mallocz(sizeof(VirtQueue) * VIRTIO_PCI_QUEUE_MAX);
+    for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++)
+        vdev->vq[i].vector = VIRTIO_NO_VECTOR;
 
     vdev->name = name;
     vdev->config_len = config_size;