Commit 4652f164 authored by Greg Kurz's avatar Greg Kurz Committed by Michael S. Tsirkin
Browse files

virtio-9p: add savem handlers 



We don't support migration of mounted 9p shares. This is handled by a
migration blocker.

One would expect, however, to be able to migrate if the share is unmounted.
Unfortunately virtio-9p-device does not register savevm handlers at all !
Migration succeeds and leaves the guest with a dangling device...

This patch simply registers migration handlers for virtio-9p-device. Whether
migration is possible or not still depends on the migration blocker.

Signed-off-by: default avatarGreg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 1811e64c

hw/9pfs/virtio-9p-device.c

+11 −0
Original line number Diff line number Diff line
@@ -43,6 +43,16 @@ static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) 
    g_free(cfg);

}



static void virtio_9p_save(QEMUFile *f, void *opaque)

{

    virtio_save(VIRTIO_DEVICE(opaque), f);

}



static int virtio_9p_load(QEMUFile *f, void *opaque, int version_id)

{

    return virtio_load(VIRTIO_DEVICE(opaque), f, version_id);

}



static void virtio_9p_device_realize(DeviceState *dev, Error **errp)

{

    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
@@ -130,6 +140,7 @@ static void virtio_9p_device_realize(DeviceState *dev, Error **errp) 
    }

    v9fs_path_free(&path);



    register_savevm(dev, "virtio-9p", -1, 1, virtio_9p_save, virtio_9p_load, s);

    return;

out:

    g_free(s->ctx.fs_root);