Re: [PATCH v33 0/4] Virtio-balloon: support free page reporting

From: Michael S. Tsirkin
Date: Fri Jun 15 2018 - 07:30:01 EST

On Fri, Jun 15, 2018 at 12:43:09PM +0800, Wei Wang wrote:
> - remove the cmd id related interface. Now host can just send a free
> page hint command to the guest (via the host_cmd config register)
> to start the reporting.

Here we go again. And what if reporting was already started previously?
I don't think it's a good idea to tweak the host/guest interface yet