Re: [Xen-devel] Error getting mfn

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 18/09/2012 09:24, William Dauchy wrote:
> Hello,
>
> I'm getting many "Error getting mfn" on a xen4.1.3 with dom0 3.4.11 x86_32.
> I thought it could be related to
> xen/mmu: Release just the MFN list, not MFN list and part of pagetables.
> http://git.kernel.org/?p=linux/kernel/git/konrad/xen.git;a=commit;h=785f62314984ea3af9dd830b020289ba2509ae69
>
> (XEN) Freed 212kB init memory.
> (XEN) mm.c:908:d0 Error getting mfn 2009b (pfn 5555555555555555) from
> L1 entry 000000002009b023 for l1e_owner=0, pg_owner=0
> (XEN) mm.c:908:d0 Error getting mfn 2009c (pfn 5555555555555555) from
> L1 entry 000000002009c023 for l1e_owner=0, pg_owner=0
> [...]
> (XEN) mm.c:908:d0 Error getting mfn c32116 (pfn 5555555555555555) from
> L1 entry 8000000c32116063 for l1e_owner=0, pg_owner=0
> (XEN) mm.c:908:d0 Error getting mfn c32117 (pfn 5555555555555555) from
> L1 entry 8000000c32117063 for l1e_owner=0, pg_owner=0
> (XEN) ../physdev.c:171: dom0: wrong map_pirq type 3
>
> Any hint?

Are you compiling as uniprocessor rather than SMP?  This reminds me of a
bug XenServer came across where a 32bit uniprocessor build would use two
32bit writes to change PTEs, and issue the two writes in the wrong
order, triggering this error.

~Andrew

>
> Regards,


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel