Peter Mladek reported that balloon might never refill completely after restore. This is because fill_balloon is only called once there. Calling fill_balloon repeatedly seems too aggressive, especially in light of the fact that it sleeps on failure: let's wake the config change handler and fill it asynchronously.
Reported-by: Petr Mladek <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> --- I was unable to test this - for some reason my test VM doesn't resume (with or without the patch). Petr, does this work for you? drivers/virtio/virtio_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 7efc329..ee29473 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -589,7 +589,7 @@ static int virtballoon_restore(struct virtio_device *vdev) virtio_device_ready(vdev); - fill_balloon(vb, towards_target(vb)); + wake_up(&vb->config_change); update_balloon_size(vb); return 0; } -- MST _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
