On 05/07/13 18:55, Jun'ichi Nomura wrote: > With v3.9 kernel and Nehalem CPU (i.e. unrestricted_guest=N), > a guest stuck during boot (seemingly in BIOS). > When setting emulate_invalid_guest_state=0, it does boot. > (With v3.8 kernel and older, the guest used to boot fine by default.) > > The userspace is qemu-kvm of RHEL6. > It seems the guest boots up fine with upstream qemu 1.4.1. > > Is this a kernel bug? Or is the userspace just too old to run on v3.9? With the following patches on top of v3.9, the problem goes away. Thank you! Gleb Natapov (1): KVM: VMX: fix halt emulation while emulating invalid guest sate Paolo Bonzini (3): KVM: emulator: emulate AAM KVM: emulator: emulate XLAT KVM: emulator: emulate SALC -- Jun'ichi Nomura, NEC Corporation -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html