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virtio: don't call device on !vm_running

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On vm stop, virtio changes vm_running state
too soon, so callbacks can get envoked with
vm_running = false;

Cc: qemu-stable@nongnu.org
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2014-09-04 13:32:54 +03:00 committed by Stefan Hajnoczi
parent e8bcf84200
commit 269bd822e7
1 changed files with 8 additions and 1 deletions
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9
hw/virtio/virtio.c
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@ -1108,7 +1108,10 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
bool backend_run = running && (vdev->status & VIRTIO_CONFIG_S_DRIVER_OK);
vdev->vm_running = running;
if (running) {
vdev->vm_running = running;
}
if (backend_run) {
virtio_set_status(vdev, vdev->status);
@ -1121,6 +1124,10 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
if (!backend_run) {
virtio_set_status(vdev, vdev->status);
}
if (!running) {
vdev->vm_running = running;
}
}
void virtio_init(VirtIODevice *vdev, const char *name,