Re: Bug#707257: linux-image-3.8-1-686-pae: KVM crashes with "entry failed, hardware error 0x80000021"

[Gleb Natapov <gleb@redhat.com>]

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:
> >>>> <http://download.grml.org/grml32-full_2013.02.iso>.  His original
> >>>> reported is at <http://bugs.debian.org/707257>.
> >>>>
> >>> 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.