On Sun, 1 Dec 2019 at 10:19, Marc-André Lureau <marcandre.lur...@gmail.com> wrote: > > - "serial: register vmsd with DeviceClass" > > This is standard qdev-ification, however it breaks backward migration, > but that's just how qdev_set_legacy_instance_id() works.
I don't understand this part. Surely the whole point of setting a legacy instance ID is exactly to preserve migration compatibility? If it doesn't do that then what does setting legacy ID value do? thanks -- PMM
