I just tried again with two logical CPUs and the core set to "Westmere" (I think that was the default), and didn't see the bug. So this seems related specifically to "[x] Copy host CPU configuration" being checked. Here's the /proc/cpuinfo from the "virtual Westmere" where it works:
http://paste.ubuntu.com/13836572/ ** Also affects: kvm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to kvm in Ubuntu. https://bugs.launchpad.net/bugs/1524069 Title: Xenial KVM: updating Trusty guest from 3.13.0-68 to 3.13.0-71 causes kernel exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/1524069/+subscriptions -- Ubuntu-server-bugs mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
