Commit 95477323 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

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: default avatarMichael S. Tsirkin <mst@redhat.com>
Tested-by: default avatarJason Wang <jasowang@redhat.com>
parent eff06c40

hw/virtio-net.c

+3 −0
Original line number Diff line number Diff line
@@ -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))