Re: [PATCH 2/3] virtio-net: Convert feature properties to OnOffAuto

[Akihiko Odaki]

On 2024/05/01 0:02, Yuri Benditovich wrote:
> Question:
> How will libvirt (as an example) work with this change. In the
> existing semantic of libvirt profile the "on" means "on if possible"
> and using existing profile after qemu update will still use "on" with
> meaning "force"? > Typically this is solved by machine type - if libvirt uses
> 'machine='pc-q35-8.1'' this will be backward-compatible.
> How will this change be accepted?

The reasoning here is that this patch only changes the configuration 
validation and, once the validation passes, QEMU can load the state of a 
machine created with an old version of QEMU.

It is still a good idea to add a compatibility property. I'll do so in 
the next version.