diff options
| -rw-r--r-- | docs/virtio-balloon-stats.txt | 5 | ||||
| -rw-r--r-- | hw/virtio/virtio-balloon.c | 7 |
2 files changed, 5 insertions, 7 deletions
diff --git a/docs/virtio-balloon-stats.txt b/docs/virtio-balloon-stats.txt index f74612f468..edff5f22a8 100644 --- a/docs/virtio-balloon-stats.txt +++ b/docs/virtio-balloon-stats.txt @@ -35,7 +35,8 @@ which will return a dictionary containing: o A key named last-update, which contains the last stats update timestamp in seconds. Since this timestamp is generated by the host, - a buggy guest can't influence its value + a buggy guest can't influence its value. The value is 0 if the guest + has not updated the stats (yet). It's also important to note the following: @@ -49,7 +50,7 @@ It's also important to note the following: - Polling can be enabled even if the guest doesn't have stats support or the balloon driver wasn't loaded in the guest. If this is the case - and stats are queried, an error will be returned + and stats are queried, last-update will be 0. - The polling timer is only re-armed when the guest responds to the statistics request. This means that if a (buggy) guest doesn't ever diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index bf2b588b24..22cd52edee 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -112,11 +112,6 @@ static void balloon_stats_get_all(Object *obj, struct Visitor *v, VirtIOBalloon *s = opaque; int i; - if (!s->stats_last_update) { - error_setg(errp, "guest hasn't updated any stats yet"); - return; - } - visit_start_struct(v, NULL, "guest-stats", name, 0, &err); if (err) { goto out; @@ -378,6 +373,8 @@ static void virtio_balloon_device_realize(DeviceState *dev, Error **errp) s->dvq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output); s->svq = virtio_add_queue(vdev, 128, virtio_balloon_receive_stats); + reset_stats(s); + register_savevm(dev, "virtio-balloon", -1, 1, virtio_balloon_save, virtio_balloon_load, s); |