Re: [Qemu-devel] [RESEND PATCH 1/2] balloon: call qdev_alias_all_properties for proxy dev in balloon class init

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Jan 29, 2015 at 05:24:41PM +0300, Denis V. Lunev wrote:
> The idea is that all other virtio devices are calling this helper
> to merge properties of the proxy device. This is the only difference
> in between this helper and code in inside virtio_instance_init_common.
> The patch should not cause any harm as property list in generic balloon
> code is empty.
> 
> This also allows to avoid some dummy errors like fixed by this
>     commit 91ba21208839643603e7f7fa5864723c3f371ebe
>     Author: Gonglei <arei.gonglei@huawei.com>
>     Date:   Tue Sep 30 14:10:35 2014 +0800
>     virtio-balloon: fix virtio-balloon child refcount in transports
> 
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> Signed-off-by: Raushaniya Maksudova <rmaksudova@parallels.com>
> Revieved-by: Cornelia Huck <cornelia.huck@de.ibm.com>
> CC: Christian Borntraeger <borntraeger@de.ibm.com>
> CC: Anthony Liguori <aliguori@amazon.com>
> CC: Michael S. Tsirkin <mst@redhat.com>
> ---
>  hw/s390x/virtio-ccw.c  | 5 ++---
>  hw/virtio/virtio-pci.c | 5 ++---
>  2 files changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index ea236c9..82da894 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -899,9 +899,8 @@ static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v,
>  static void virtio_ccw_balloon_instance_init(Object *obj)
>  {
>      VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
> -    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
> -    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
> -    object_unref(OBJECT(&dev->vdev));
> +    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
> +                                TYPE_VIRTIO_BALLOON);
>      object_property_add(obj, "guest-stats", "guest statistics",
>                          balloon_ccw_stats_get_all, NULL, NULL, dev, NULL);
>  
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index dde1d73..745324b 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1316,9 +1316,8 @@ static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
>  static void virtio_balloon_pci_instance_init(Object *obj)
>  {
>      VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
> -    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
> -    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
> -    object_unref(OBJECT(&dev->vdev));
> +    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
> +                                TYPE_VIRTIO_BALLOON);
>      object_property_add(obj, "guest-stats", "guest statistics",
>                          balloon_pci_stats_get_all, NULL, NULL, dev,
>                          NULL);

OK, but what about this guest-stats property?
Should it get the same treatment?

> -- 
> 1.9.1