I prepared a proposed patch to address these concerns:
https://lists.oasis-open.org/archives/virtio-dev/202104/msg00007.html

Feedback will be much appreciated

Thanks,
- Enrico

On Tue, Apr 20, 2021 at 4:08 AM Michael S. Tsirkin [off-list ref] wrote:

On Tue, Apr 20, 2021 at 08:01:29AM +0100, Christoph Hellwig wrote:

quoted

Just to despit my 2 cents again:  I think the way this is specified
in the virtio spec is actively harmful and we should not suport it in
Linux.

If others override me we at least need to require a detailed
documentation of these fields as the virto spec does not provide it.

Please also do not add pointless over 80 character lines, and follow
the one value per sysfs file rule.

Enrico would you like to raise the issues with the virtio TC
for resolution?

--
MST