Update: The invtsc isolation test has now failed as well.
Two VMs configured with: host-passthrough migratable='off' invtsc disabled also crashed. Therefore disabling invtsc does not prevent the issue, and invariant TSC does not appear to be the sole trigger. Current result: migratable='off' -> reproducibly unstable migratable='off' + invtsc disabled -> also unstable migratable='on' -> stable so far This narrows the problem to some other CPU-feature difference or KVM behavior associated with migratable='off', rather than invtsc alone. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2166603 Title: KVM guests randomly panic/freeze with host-passthrough migratable=off, stable with migratable=on To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2166603/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
