We have also run into the problem on our AMD Opteron KVM hosts and I'm the author of the Proxmox post. The problem seems related to SMP. Setting the guest to run with only one core works.
I see that there was a SMP kernel update in the 2.6.32-25 revision. Could this have caused a regression? http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_2.6.32-26.48/changelog * can: Fix SJA1000 command register writes on SMP systems - LP: #607824 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/669818 Title: Update to 10.04 2.6.32-25 as KVM Guest no longer boot -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
