On Thu, Nov 05, 2020 at 11:40:37AM +0000, Stefan Hajnoczi wrote: > On Wed, Nov 04, 2020 at 05:32:02PM +0000, Dr. David Alan Gilbert wrote: > > * Stefan Hajnoczi (stefa...@redhat.com) wrote: > > > Michael replied in another sub-thread wondering if versions are really > > > necessary since tools do the migration checks. Let's try dropping > > > versions to simplify things. We can bring them back if needed later. > > > > What does a user facing tool do? If I say I want one of these NICs > > and I'm on the latest QEMU machine type, who sets all these parameters? > > The machine type is orthogonal since QEMU doesn't know about every > possible VFIO device. The device is like a PCI adapter that is added to > a physical machine aftermarket, it's not part of the base machine's > specs.
I think at least at the first stage, it is a smart thing to do to have a list of allowed devices in QEMU. This way we can ask for a spec of the migration format, include it in qemu (or a subtree? I don't mind ...) and check it is sane. And we can be reasonably sure we can make changes without breaking the world - we will know whom to contact if we change the protocol. -- MST
