Messages in this thread |  | | | Date | Tue, 17 May 2011 15:07:38 -0400 | | From | Don Zickus <> | | Subject | Re: [RFC] x86, NMI, Treat unknown NMI as hardware error |
| |
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
|  |