Re: [Xen-devel] Dom0 linux 4.0 + devel/for-linus-4.1 branch: p2m.c:884:d0v0 gfn_to_mfn failed! gfn=ffffffff001ed type:4

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Monday, April 13, 2015, 11:50:51 AM, you wrote:

> On 13/04/15 10:39, Sander Eikelenboom wrote:
>> Hi David,
>> 
>> I seem to have spotted some trouble with a 4.0 dom0 kernel with the 
>> devel/for-linus-4.1 branch pulled on top.
>> 
>> Does this remind you of any specific commits in the devel/for-linus-4.1 
>> branch that could
>> likely be involved that i could try to revert ?

> Yes.  This will probably be 4e8c0c8c4bf3a (xen/privcmd: improve
> performance of MMAPBATCH_V2) which makes the kernel try harder to map
> all GFNs instead of failing on the first one.

> I think this is qemu incorrectly trying to map GFNs.

> David

Reverted that specific one, but still get those messages.

--
Sander


>> I now get a very large number of these at guest with passthrough start:
>> (XEN) [2015-04-12 14:55:20.226] p2m.c:884:d0v0 gfn_to_mfn failed! 
>> gfn=ffffffff001ed type:4




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