vhost net currently keeps running after vmstop, which causes trouble as qemy does not check for dirty pages anymore. The fix is to simply keep vm and vhost running/stopped status in sync.
Tested-by: David L Stevens <dlstev...@us.ibm.com> Signed-off-by: Michael S. Tsirkin <m...@redhat.com> --- Changes from v1: Simplify code as suggested by Amit. hw/virtio-net.c | 11 +++++------ 1 files changed, 5 insertions(+), 6 deletions(-) diff --git a/hw/virtio-net.c b/hw/virtio-net.c index 28f26e1..67eebcf 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -877,12 +877,11 @@ static void virtio_net_set_status(struct VirtIODevice *vdev, uint8_t status) static void virtio_net_vmstate_change(void *opaque, int running, int reason) { VirtIONet *n = opaque; - if (!running) { - return; - } - /* This is called when vm is started, it will start vhost backend if - * appropriate e.g. after migration. */ - virtio_net_set_status(&n->vdev, n->vdev.status); + uint8_t status = running ? n->vdev.status : 0; + /* This is called when vm is started/stopped, + * it will start/stop vhost backend if appropriate + * e.g. after migration. */ + virtio_net_set_status(&n->vdev, status); } VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf) -- 1.7.1.12.g42b7f