This looks to be drilling down to a problem which seems to only affect i386 for some reason. But basically the kvm/qemu process gets into a situation where the thread_info says "you have to reschedule" but the per-cpu counterpart prevents that. Now the kvm/qemu process runs wildly around between trying to run the guest vcpu which is not done because the process side says reschedule and the cond_reschedule() function not doing anything because the cpu info tells it otherwise.
Right now I got a test kernel back to run kvm but that is rather a vile work-around. I have sent an email upstream in the hope that somebody there has a better solution. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
