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

[Gleb Natapov <gleb@redhat.com>]

On Thu, Jun 06, 2013 at 02:10:39PM +0200, Stefan Pietsch wrote:
> On 06.06.2013 13:40, Gleb Natapov wrote:
> > On Thu, Jun 06, 2013 at 01:35:13PM +0200, Stefan Pietsch wrote:
> 
> >> I had no success with the Debian kernel 3.10~rc4-1~exp1 (3.10-rc4-686-pae).
> >>
> >> The machine hangs after "Enabling APIC mode:  Flat.  Using 1 I/O APICs".
> > OK, since it looks like it hangs during timer initialization can you try
> > to disable kvmclock? Add -cpu qemu64,-kvmclock to your command line.
> > Also can you provide the output of "cat /proc/cpuinfo" on your host? And
> > complete serial output before hang.
> 
> 
> command line:
> qemu-system-i386 -machine accel=kvm -m 512 -cpu qemu64,-kvmclock -cdrom
> grml32-full_2013.02.iso -serial file:ttyS0.log
> 
> 
> ttyS0.log:
> ##########
> 

Nothing out of ordinary here. Since you can reproduce the hang and I
cannot, can you try and bisect it? Also can trace kvm during the hang
http://www.linux-kvm.org/page/Tracing? Start the trace as close to hang
as possible and stop it as quick after it as possible too to make trace
file smaller.

--
			Gleb.