Re: Re: FC15: 32-bit PV guest crash on restore on x64_86 host

[Igor Mammedov <imammedo@redhat.com>]

On 05/06/2011 07:12 PM, Konrad Rzeszutek Wilk wrote:
> On Fri, May 06, 2011 at 06:16:26PM +0200, Igor Mammedov wrote:
>> On 05/05/2011 11:28 PM, Konrad Rzeszutek Wilk wrote:
>>> On Wed, May 04, 2011 at 05:13:20PM -0400, Konrad Rzeszutek Wilk wrote:
>>>> On Wed, May 04, 2011 at 11:03:04PM +0200, Igor Mammedov wrote:
>>>>> On 05/04/2011 10:19 PM, Konrad Rzeszutek Wilk wrote:
>>>>>> On Wed, May 04, 2011 at 09:58:01PM +0200, Igor Mammedov wrote:
>>>>>>> On restore 32bit PV guest crashes on x64_86 host, while  x64_86 PV guest
>>>>>>> works as expected.
>>> I tried this with 2.6.39-rc6 and could not reproduce this. Does it work
>>> for you with 2.6.39-rc6? Or is it _only_ failing with 2.6.38?
>>>
>>>
>> It's failing with 2.6.39-rc6 as well. And 2.6.38 with suggested
>> patches as well.
>>
>> But since I do like fast builds, I've used fast PC with 2 NUMA nodes
>> at least and
> Hmm, the guest is a single CPU one, so perhaps you are hitting a hypervisor
> issue. What happens if you turn NUMA off on the hypervisor line?

Looks like removing numa=on from hypervisor init line helped, guest
stays alive after restore.

>> it turns out  that the bug is not reproducible on PC with only one
>> cpu (HPZ800
>> 1 socket config). So you can reproduce it if you try a PC with at
>> least 2 cpus
>> nodes.
> Ok, I've an old IBM x366 that has four sockets - that should do it -
> but will have to wait till next week when I am back from traveling.
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel