Hi, On Mon, 14 Dec 2015 20:26:35 +0200 "Michael S. Tsirkin" <m...@redhat.com> wrote: > > > It's set internally by machine types to avoid breaking > > > migration. I don't see any reason for users to set it. > > > > But they do set it :) albeit only through machine types. I don't think > > it's different from offloads, just much more specialized. > > > > Or do you mean that it could go away if we decide to remove very old > > machine types? I think we would remove compat properties connected to > > those machine types as well, even without "x-". > > > > Then we'll break users who set them directly for some reason. > So x- means "not part of stable ABI". > No?
BTW, different drivers use different naming approaches. E.g. d209c744 'hw/audio/intel-hda: Fix MSI capability address' suggests a "old_msi_addr" property (yes, underscores) for intel-hda. Michael, you were the reviewer ;-) Perhaps we can standartize that "c-" prefix denotes compat properties? Regards, Shmulik
