Re: [RFC] x86, NMI, Treat unknown NMI as hardware error

[Don Zickus]

On Tue, May 17, 2011 at 11:18:59AM -0700, Andi Kleen wrote:
> > Random thought, in the Firmware first mode of HEST (which is the only way
> > GHES records get produced??), does an SCI happen first to jump into the
> > firmware for processing, then an NMI?
> 
> Either that or there is a separate service processor which handles it.
> Presumably it depends a lot on the particular system.

Ah interesting.  I was going to suggest somehow setting a bit when an SCI
comes in and check that bit in the unknown NMI path as a possible hint
that the NMI might be related to HEST (sorta how we flag unknown NMIs in
the perf code).

It was just an idea.  Obviously a service processor will make that more
difficult. :-)

Cheers,
Don
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