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

Borislav Petkov
2013-01-21T14:52:26Z

On Mon, Jan 21, 2013 at 03:10:19PM +0100, Udo van den Heuvel wrote:
> On 2013-01-21 14:09, Borislav Petkov wrote:
> >> Let's see what happens...
> >
> > Btw, while we're at it, here's some more h0rkage from my PD box:
> >
> > [ 0.220022] [Firmware Bug]: AMD-Vi: IOAPIC[9] not in IVRS table
> > [ 0.220078] [Firmware Bug]: AMD-Vi: IOAPIC[10] not in IVRS table
> > [ 0.220132] [Firmware Bug]: AMD-Vi: No southbridge IOAPIC found in IVRS table
> > [ 0.220187] AMD-Vi: Disabling interrupt remapping due to BIOS Bug(s)
>
> I have:
>
> # dmesg|grep -i amd-vi
> [ 1.125636] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
> [ 1.125701] AMD-Vi: Extended features: PreF PPR GT IA
> [ 1.131725] AMD-Vi: Lazy IO/TLB flushing enabled
>
> Is that 'OK'?

That's simply dumping the IOMMU extended features and yes, it is ok.

Mine happen when enabling CONFIG_IRQ_REMAP and they're somewhat related.
Anyways, I decided to show them to Joerg so that he's aware.

Btw, you could try enabling that on your machine and see whether IRQ
remapping works there.

Thanks.

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
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