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Re: [Qemu-devel] [PULL 3/6] virtio: don't call device on !vm_running
From: |
Christian Borntraeger |
Subject: |
Re: [Qemu-devel] [PULL 3/6] virtio: don't call device on !vm_running |
Date: |
Thu, 11 Sep 2014 14:19:42 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.0 |
On 04/09/14 18:38, Stefan Hajnoczi wrote:
> From: "Michael S. Tsirkin" <address@hidden>
>
> On vm stop, virtio changes vm_running state
> too soon, so callbacks can get envoked with
> vm_running = false;
>
> Cc: address@hidden
> Cc: Jason Wang <address@hidden>
> Signed-off-by: Michael S. Tsirkin <address@hidden>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
> hw/virtio/virtio.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
> index 5c98180..ac22238 100644
> --- a/hw/virtio/virtio.c
> +++ b/hw/virtio/virtio.c
> @@ -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,
>
This broke managedsave on s390x:
qemu-system-s390x: hw/net/virtio-net.c:1348: virtio_net_save: Assertion
`!n->vhost_started' failed.
reverting that commit makes it working again.
Any ideas?
Christian
- [Qemu-devel] [PULL v2 0/6] Net patches, Stefan Hajnoczi, 2014/09/04
- [Qemu-devel] [PULL 4/6] net: invoke callback when purging queue, Stefan Hajnoczi, 2014/09/04
- [Qemu-devel] [PULL 5/6] net: complete all queued packets on VM stop, Stefan Hajnoczi, 2014/09/04
- [Qemu-devel] [PULL 6/6] virtio-net: purge outstanding packets when starting vhost, Stefan Hajnoczi, 2014/09/04
- Re: [Qemu-devel] [PULL v2 0/6] Net patches, Peter Maydell, 2014/09/04