Re: [Xen-devel] Re: FC15: 32-bit PV guest crash on restore on x64_86 host

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

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?

> 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.

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