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

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On 06.06.2013 08:42, Gleb Natapov wrote:
> 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.


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".

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