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| author | Michael S. Tsirkin <mst@redhat.com> | 2010-11-22 19:52:19 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-12-09 12:47:48 +0200 |
| commit | 954773230484f5afeb675e9ff814c97e54e69e17 (patch) | |
| tree | 327b263d65f6e0b97d895172c1a3d10932470e77 /hw/virtio-net.c | |
| parent | eff06c40d330cdbea414331337ca6f5032dbf6d7 (diff) | |
| download | qemu-954773230484f5afeb675e9ff814c97e54e69e17.zip qemu-954773230484f5afeb675e9ff814c97e54e69e17.tar.gz qemu-954773230484f5afeb675e9ff814c97e54e69e17.tar.bz2 | |
virtio-net: don't dma while vm is stopped
DMA into memory while VM is stopped makes it
hard to debug migration (consequitive saves
result in different files).
Fixing this completely is a large effort,
this patch does this for virtio-net.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw/virtio-net.c')
| -rw-r--r-- | hw/virtio-net.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/virtio-net.c b/hw/virtio-net.c index 1d61f19..43a2b3d 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -424,6 +424,9 @@ static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq) static int virtio_net_can_receive(VLANClientState *nc) { VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque; + if (!n->vm_running) { + return 0; + } if (!virtio_queue_ready(n->rx_vq) || !(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK)) |