On 5 Oct 2014, at 08:00, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > Il 29/09/2014 09:02, Markus Armbruster ha scritto: >>> If you were just objecting to the fact that pc-1.0 was made to >>> be an alias of either one or the other at compile time, simply >>> drop the second patch of the v2 patchset. > > I was objecting to making pc-1.0 special. There's nothing special in > pc-1.0, other machine types also had differences between qemu-kvm and > qemu. And I do not think that upstream has any reason to make pc-1.0 > special. OK, so in v5, pc-1.0 is unchanged, and not made special. A new machine type is added which allows import from something (unfortunately) called pc-1.0 in something in qemu's past, as well as some distributions. > So, if Ubuntu is okay with breaking pc-1.0 migration from 14.04-old to > 14.04-new, the right thing to do is simply that Ubuntu makes its pc-1.0 > machine type the qemu-kvm one. No new machine types, no aliases, no > anything. That would not allow Ubuntu (or Suse - similarly affected I think) to import pc-1.0 VMs from things actually running pc-1.0, and would mean that newly created pc-1.0 VMs would be 'wrong', perpetuating the problem. -- Alex Bligh -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list