Re: [Qemu-devel] [PATCH] virtio: Unregister memory listener when unrealize

[Markus Armbruster <armbru@redhat.com>]

Fam Zheng <famz@redhat.com> writes:

> Cc: qemu-stable@nongnu.org
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  hw/virtio/virtio.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
> index 03592c5..a7741f4 100644
> --- a/hw/virtio/virtio.c
> +++ b/hw/virtio/virtio.c
> @@ -2515,6 +2515,7 @@ static void virtio_device_unrealize(DeviceState *dev, Error **errp)
>          }
>      }
>  
> +    memory_listener_unregister(&vdev->listener);
>      g_free(vdev->bus_name);
>      vdev->bus_name = NULL;
>  }

Is this a bug fix?  If yes, what exactly's broken without it?