Messages in this thread | | | Date | Fri, 20 May 2011 16:13:25 +0800 | From | Huang Ying <> | Subject | Re: [RFC] x86, NMI, Treat unknown NMI as hardware error |
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Hi, Don,
On 05/18/2011 03:07 AM, Don Zickus wrote: > 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. :-)
Hmm, what's the conclusion? Do you think unknown NMI should be seen as hardware error? At least on some white listed machines?
Best Regards, Huang Ying
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