Re: [Qemu-devel] migration: new sections and backward compatibility.

[Gerd Hoffmann]

  Hi,

> > We don't have a hard policy about not merging devices that don't
> > support migration.
> >
> > Since migration must be supported forever, I'd rather see a device
> > get some solid testing before it starts doing live migration.  That
> > said, we should probably do this consciously by explicitly marking
> > the device non-migrateable.
>
> Can't we just implicitly fail migration whenever there's a device in
> the tree that doesn't have VMSTATE?

There are cases where the device doesn't need to save state, so that 
alone doesn't cut it.

cheers,
  Gerd