On 17/06/2016 17:19, Eduardo Habkost wrote: > > > So, what happens if the guest play tricks in bits 40-45 when QEMU > > > sets the limit to 40 but we are running in a 46-bit host? Is it > > > really a problem? I assumed it would be safe. > > > > The guest expects a "reserved bit set" page fault, but doesn't get one. > > Wait, are you talking about migration only, or are you really > talking about running current QEMU (hardcoded to 40) on a 46-bit > host? I'm not talking about migration, above.
I'm talking about both. :( > We really can't emulate a 40-bit machine in a 46-bit host? I > didn't expect that. Unfortunately that's the case. :( Paolo
