Re: 3.6.11 AMD-Vi: Completion-Wait loop timed out

Jacob Shin
2013-01-21T16:05:01Z

On Sun, Jan 20, 2013 at 12:48:28PM +0100, Borislav Petkov wrote:
> On Sun, Jan 20, 2013 at 12:40:11PM +0100, Jörg Rödel wrote:
> > Yes, the BIOS vendor can fix this issue. They need to disable NB clock
> > gating for the IOMMU.
>
> Right, Udo, you can try Gigabyte first.
>
> Btw, can't we add a quirk to disable NB clock gating? Maybe Boris and
> Jacob could help. CCed.

Hi, yes we will try and reproduce the NB clock gating issue on our
end and submit a patch ASAP.

And Boris P., I think your IOAPIC not in IVRS issue we've also seen
something similar recently (on Xen), so we'll atempt to tackle that
one too afterwards.

-Jacob

>
> Guys, the error description is at
> http://marc.info/?l=linux-kernel&m=135867802432660
>
> Thanks.
>
> --
> Regards/Gruss,
> Boris.
>
> Sent from a fat crate under my desk. Formatting is fine.
> --
>