Messages in this thread | | | Date | Mon, 19 May 2014 09:26:19 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/mce: Distirbute the clear operation of mces_seen to Per-CPU rather than only monarch CPU |
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On Mon, May 19, 2014 at 09:55:40AM +0800, Chen Yucong wrote: > But all other CPUs also have to wait monarch CPU to exit from mce_end. > What's the difference between monarch CPU and Per-CPU for clearing > mces_seen? In practice, there is no difference between them. If we use > monarch CPU to clear mces_seen, then Per-CPU variable can not play out > its advantage.
I'll let you stare at mce_reign() a little bit longer... Also, pay attention to its callsite, that might help.
> Well, in that case, why is there a need for time-out machine in MCE > handler?
I'll let you figure this out yourself too - it is only fair.
:-)
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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