On 05/03/2013 09:25 PM, Konrad Rzeszutek Wilk wrote:
>> Oh I am sorry - I gave you incorrect information. We are not seeing the
>> crash on our xenified 2.6.32 kernel. We just started seeing it in our newer
>> 3.2 pvops kernel. Sorry for the confusion.
>>
>
> I would suggest you try the v3.9 kernel to see if the problem shows
> up. There were fixes in arch/x86/xen/setup.c and arch/x86/xen/p2m.c
> that might cause this.

I know we are working on moving to a 3.8 kernel. At the very least we 
can diff them and see if we can identify the fixes and try them.

>
> (XEN) mm.c:901:d0 Error getting mfn 800 (pfn 5555555555555555) from L1
> entry 0000000000800403 for l1e_owner=0, pg_owner=0
> (XEN) mm.c:4976:d0 ptwr_emulate: could not get_page_from_l1e()
>
> And earlier:
>
> [    0.000000] init_memory_mapping: 0000000000000000-0000000036ffe000
>
> is a bit odd. It is trying to map only up to 36ffe000.
>
> Thought it also reminds me of an clipped MTRR issue that Stefan Bader
> found - take a look in the xen-devel archives and see.I think the fix
> was a one line change in the Linxu code but I can't recall the details
>
> What you need to figure out is why the M2P (so DIRECTMAP from Xen) is
> giving dom0 the 14060 MFN value for some PTE.

Ok we will try hunting those issues down. Thanks a lot for the help Konrad.

>> Thanks
>>
>> --
>> Ross Philipson
>>


-- 
Ross Philipson

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