Re: [Xen-devel] [TestDay] Xen crash on boot

[Eric Houby <ehouby@xxxxxxxxx>]

On Fri, 2014-01-24 at 01:44 +0000, Andrew Cooper wrote:
> On 24/01/2014 00:47, Eric Houby wrote:
> > On Thu, 2014-01-23 at 11:16 +0000, Jan Beulich wrote:
> >
> >> But you didn't turn on interrupt remapping, or it got forcibly
> >> disabled:
> >>
> >> [Firmware Bug]: AMD-Vi: No southbridge IOAPIC found
> >> AMD-Vi: Disabling interrupt remapping
> >
> > Jan,
> >
> > If there is not a specific switch required to enable interrupt remapping
> > while booting 3.12.7 on bare hardware, then it was forcibly disabled.
> > Would boot logs from xen 4.1.3 be helpful?  If so, they are attached.
> >
> >> If
> >> the kernel responds to that mentioned firmware bug by forcing
> >> interrupt remapping off, maybe we would have to do the same...
> >>
> >> Jan
> >
> >
> > That would be better than xen failing to boot.
> >
> >
> > Thanks,
> >
> > -Eric
> 
> You probably want "iommu=debug,verbose" rather than verbos
> 
> ~Andrew

oops.

The verbose version without a typo doesn't provide any additional
details.  I also tried iommu=verbose and the log was no different.  Is
the command different in 4.1.3?


 Eric

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