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

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 4 May 2011, 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.
> > >>
> > >>Bisecting of upstream kernel shows following offending commit:
> > >Can you try the patches in devel/p2m-e820-pci.v2
> > >(git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git)
> > >
> >
> > devel/p2m-e820-pci.v2 branch isn't boots.
> >
> > Could you point out any specific patches?
> 
> 
> a1fcd6e xen:p2m: Create entries in the P2M_MFN trees's to track 1-1 mappings
> 39fc738 xen/setup: Ignore E820_UNUSABLE when setting 1-1 mappings.
> 

Also the following might help:

commit 706cc9d2a4cb9b03217e15b0bb3d117f4d5109ee
Author: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date:   Wed Feb 2 18:32:59 2011 +0000

    xen/m2p: Check whether the MFN has IDENTITY_FRAME bit set..


> But the more I look at this I don't think those patches will help here at all.
> 
> This looks like a completle new failure. Let me try it on my box tomorrow
> and see how it works out.

I tried to repro the issue but I couldn't.

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