From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: Bug#707257: linux-image-3.8-1-686-pae: KVM crashes with "entry failed, hardware error 0x80000021" Date: Thu, 6 Jun 2013 09:42:40 +0300 Message-ID: <20130606064240.GR4725@redhat.com> References: <518A7323.7000302@sp.consulting.lsexperts.de> <1368061686.4131.225.camel@deadeye.wl.decadent.org.uk> <518BF14E.3070509@sp.consulting.lsexperts.de> <5194C254.4000201@sp.consulting.lsexperts.de> <1368925231.3469.98.camel@deadeye.wl.decadent.org.uk> <20130519123227.GA13375@redhat.com> <51AF27A5.5030509@sp.consulting.lsexperts.de> <20130605121024.GZ4725@redhat.com> <51AF3447.6090308@sp.consulting.lsexperts.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Ben Hutchings , kvm@vger.kernel.org, 707257@bugs.debian.org To: Stefan Pietsch Return-path: Received: from mx1.redhat.com ([209.132.183.28]:37362 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754126Ab3FFGmv (ORCPT ); Thu, 6 Jun 2013 02:42:51 -0400 Content-Disposition: inline In-Reply-To: <51AF3447.6090308@sp.consulting.lsexperts.de> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Jun 05, 2013 at 02:51:19PM +0200, Stefan Pietsch wrote: > On 05.06.2013 14:10, Gleb Natapov wrote: > > On Wed, Jun 05, 2013 at 01:57:25PM +0200, Stefan Pietsch wrote: > >> On 19.05.2013 14:32, Gleb Natapov wrote: > >>> On Sun, May 19, 2013 at 02:00:31AM +0100, Ben Hutchings wrote: > >>>> Dear KVM maintainers, it appears that there is a gap in x86 emulation, > >>>> at least on a 32-bit host. Stefan found this when running GRML, a live > >>>> distribution which can be downloaded from: > >>>> . His original > >>>> reported is at . > >>>> > >>> Can you verify with latest linux.git HEAD? It works for me there on > >>> 64bit. There were a lot of problems fixed in this area in 3.9/3.10 time frame, > >>> so it would be helpful if you'll test 32bit before I install one myself. > >> > >> > >> Kernel version 3.9.4-1 (linux-image-3.9-1-686-pae) made things worse. > >> > >> The virtual machine tries to boot the kernel, but stops after a few > >> seconds and the kern.log shows: > > At what point does it stop? > > > The machine stops at: > > Performance Events: Broken PMU hardware detected, using software events > only. > Failed to access perfctr msr (MSR c1 is 0) > Enabling APIC mode: Flat. Using 1 I/O APICs Timer initialization is what comes next. I tried 32bit kernel compiled from kvm.git "next" (3.10.0-rc2+) branch and upstream qemu and I cannot reproduce the problem. The guest boots fine. -- Gleb.