8.1-RC2 - PCI fatal error or MCE triggered by USB/ehci on Sun X4100M2?

John Baldwin jhb at freebsd.org
Mon Jul 12 15:08:45 UTC 2010


On Monday, July 12, 2010 9:57:58 am Markus Gebert wrote:
> 
> On 12.07.2010, at 14:48, John Baldwin wrote:
> 
> 
> > Hmm with mca disabled in the loader you should not be getting any MCE's at 
all 
> > as we don't enable the MCE interrupt in the CPU in that case.  Are you 
> > disabling it in the BIOS rather than loader.conf?
> 
> I disabled it in loader.conf, just tested again, you're right, it just 
reboots in that case.
> 
> 
> > 7.3 has MCA support, but disabled by default.
> 
> IIRC we also tested 7.3 without being able to reproduce, but I'm not sure 
(didn't do all the tests myself).
> 
> But I guess we can rule out MCA at this point, since we just get a forced 
reboot instead of a panic, right?

Yes.

-- 
John Baldwin


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