On Wednesday 13 August 2008 14:48:04 Keir Fraser wrote:
> On 13/8/08 13:40, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote:
> >>>> This looks to me, there's a non-public event channel using the same
> >>>> number as VIRQ_MCA which fires when launching memtest as HVM guest.
> >>>
> >>> I don't think this is the case. Sounds easy to repro this issue though.
> >>> I'll give it a go.
> >>
> >> I can boot a memtest-3.4 ISO in an HVM guest on PAE hypervisor just
> >> fine.
> >
> > Does your Dom0 kernel registrate the machine check event handler ?
> > If not, then it things go fine. If yes, then you should see the flood of
> > VIRQ_MCA events in the Dom0.
>
> How do I make it do that?
Assuming you use Linux as Dom0, apply the attached patch to your local tree.
With it, you should see a flood of "xen_mca: HW reported correctable error(s)"
Dom0 kernel messages.
Note, the patch is not intended to go upstream. There will be something better
in the future.
Christoph
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linux_xenmca.diff
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