Commit 791b1daf authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Michael S. Tsirkin
Browse files

virtio: migrate vdev->broken flag 



Send a subsection if the vdev->broken flag is set.  This allows live
migration of broken virtio devices.

The subsection is only sent if vdev->broken has been set.  In most cases
the flag will be clear and no subsection will be sent.

Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
parent f5ed3663

hw/virtio/virtio.c

+19 −0
Original line number Diff line number Diff line
@@ -1343,6 +1343,13 @@ static bool virtio_extra_state_needed(void *opaque) 
        k->has_extra_state(qbus->parent);

}



static bool virtio_broken_needed(void *opaque)

{

    VirtIODevice *vdev = opaque;



    return vdev->broken;

}



static const VMStateDescription vmstate_virtqueue = {

    .name = "virtqueue_state",

    .version_id = 1,
@@ -1457,6 +1464,17 @@ static const VMStateDescription vmstate_virtio_64bit_features = { 
    }

};



static const VMStateDescription vmstate_virtio_broken = {

    .name = "virtio/broken",

    .version_id = 1,

    .minimum_version_id = 1,

    .needed = &virtio_broken_needed,

    .fields = (VMStateField[]) {

        VMSTATE_BOOL(broken, VirtIODevice),

        VMSTATE_END_OF_LIST()

    }

};



static const VMStateDescription vmstate_virtio = {

    .name = "virtio",

    .version_id = 1,
@@ -1470,6 +1488,7 @@ static const VMStateDescription vmstate_virtio = { 
        &vmstate_virtio_64bit_features,

        &vmstate_virtio_virtqueues,

        &vmstate_virtio_ringsize,

        &vmstate_virtio_broken,

        &vmstate_virtio_extra_state,

        NULL

    }