Comment 4 for bug 1467927

I think Daniel has a good point, that it's invalid to prefer thread siblings and then tell the guest it's on separate sockets. I would suggest that it's also not valid to use host cores and tell the guest they're separate sockets.

Ideally the topology we specify to the guest should match the topology on the host in order to allow the guest scheduler to make the best possible decisions.

So I think we should fix the fact that odd/even gives different behaviour, but ideally we should also fix https://bugs.launchpad.net/nova/+bug/1417723