On 17/06/2015 18:34, Michael S. Tsirkin wrote: > > > > I just tried, set prog_if to different values, sure it failed. > > > > > > How so? It's just a byte in config space. > > Why does it fail? Because pci core migrates it and validates it > on both sides.
I cannot find it, can you show me the validation code? > > > David's patches are also guest visible, are they not? > > > We are losing state guest can indirectly observe, right? > > > > One case only happens during migration, the other does not. > > > True - apparently the bug was only in the migration stream, > not the functionality? Yes. Paolo