From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y Date: Tue, 07 May 2013 16:46:22 +0200 Message-ID: <518913BE.8060300@redhat.com> References: <5188CF8B.8040809@ce.jp.nec.com> <20130507103520.GL12349@redhat.com> <5188DFF7.1090808@ce.jp.nec.com> <20130507120611.GM12349@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Jun'ichi Nomura , kvm@vger.kernel.org To: Gleb Natapov Return-path: Received: from mail-yh0-f43.google.com ([209.85.213.43]:45958 "EHLO mail-yh0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753832Ab3EGOqc (ORCPT ); Tue, 7 May 2013 10:46:32 -0400 Received: by mail-yh0-f43.google.com with SMTP id a41so144003yho.30 for ; Tue, 07 May 2013 07:46:31 -0700 (PDT) In-Reply-To: <20130507120611.GM12349@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 07/05/2013 14:06, Gleb Natapov ha scritto: > On Tue, May 07, 2013 at 08:05:27PM +0900, Jun'ichi Nomura wrote: >> On 05/07/13 19:35, Gleb Natapov wrote: >>> On Tue, May 07, 2013 at 06:55:23PM +0900, Jun'ichi Nomura wrote: >>>> Hello, >>>> >>>> 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? >>>> >>>> >>> It should work. What seabios version are you using? >> >> It's seabios-0.6.1.2-26.el6. >> (and qemu-kvm-0.12.1.2-2.355.el6) >> > Works for me, but it looks like in your case the bios is in option rom. What version of vgabios, too? > What are you booting from? What's the qemu command line? > > What is the output of "virsh qemu-monitor-command vm12 --hmp x/i $pc" > when it hangs? Paolo