I am seeing this same error message when I start kvm with an empty disk attached right when pxe kicks in. With kernel v3.6-rc3 it works fine, with v3.5.3it still fails. I found a comment from the upstream developer at http://www.mail-archive.com/kvm@vger.kernel.org/msg73419.html: "We'll try to get emulate_invalid_guest_state=1 to be the default for 3.6."
3.6-rc3 indeed has emulate_invalid_guest_state enabled, with 3.5.3 and 3.5.0-13-generic it is disabled (as shown with cat /sys/module/kvm_intel/parameters/emulate_invalid_guest_state). Unloading kvm_intel and reloading it with emulate_invalid_guest_state=y gives me a working kvm again, not crashing when pxe kicks in. Dave, could you test if setting emulate_invalid_guest_state=y solves the issue for you too? (sudo rmmod kvm_intel and sudo modprobe kvm-intel emulate_invalid_guest_state=y) If that works for Dave as well, I guess the winning upstream commit is "KVM: VMX: Emulate invalid guest state by default" (a27685c33a on main tree from kernel.org). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1045027 Title: iPXE kills kvm with KVM: entry failed, hardware error 0x80000021 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1045027/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
