On 22 Sep 2014, at 16:44, Paolo Bonzini <pbonz...@redhat.com> wrote:
> time, RHEL7 did it. Ubuntu didn't, and probably neither did Debian. > > This patch singles out pc-1.0 just because it used to be the default in > Ubuntu 12.04. So basically it's making upstream carry the burden of a > decision of the Ubuntu folks. It's understandable that Alex disagrees > with the decision, but nevertheless it's not something that upstream > should agree with. > > Also, another horse that has left the barn: it's already too late to > apply this patch to upstream Ubuntu. If you do that, any machine > created with 12.04 and reused with 14.04 will fail to migrate to another > 14.04 machine that includes this patch, as I understand it. > > So as things stand, I don't see a reason to apply this patch upstream. Well, Ubuntu (Serge I think) said in the Ubuntu bug report he'd be quite willing to break migration of pc-1.0 machine types from 14.04 to 14.04 because that machine type isn't the default anyway on 14.04. But that isn't the point, as the patch (as a whole) doesn't break anything - it merely gives the possibility to import pc-1.0 machines from qemu-kvm. That's useful even if you build qemu from source every time. Or were you just arguing against the ./configure option? -- Alex Bligh