On 15.08.2013, at 17:11, Andreas Färber wrote: > Am 15.08.2013 15:12, schrieb Anthony Liguori: >> Everyone is talking past each other and no one is addressing the real >> problem. There are two distinct issues here: >> >> 1) We have two ABIs that cannot be changed unless there's a very good >> reason to. Alexey's original patch breaks both. The guest ABI >> cannot change given a fixed command line. >> >> IOW, the exposed PVR value for -cpu POWER7 cannot change across >> versions of QEMU or when running on different hardware. This breaks >> live migration and save/resume. >> >> We also cannot break the command line interface. If the last version >> of QEMU supported -cpu POWER7_v2.1, then we must continue to support >> that. > > 1a) How should -cpu 0xDEADBEEF or -cpu DEADBEEF behave. > > I expect it to error out as before > rather than applying the same fuzz/mask that -cpu host might.
I actually think it'd make sense to apply the same fuzz/mask, don't you think? Alex
