Messages in this thread | | | Date | Wed, 11 Feb 2015 13:55:34 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86/smpboot: check if CLFLUSH is actually necessary |
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On 01/30/2015 01:26 PM, Scotty Bauer wrote: > mwait_play_dead previously issued a CLFLUSH to work around a bug on > some xeon processors. We can now determine if the CPU is a buggy CPU. > This patch checks if if we're on a buggy CPU which allows non-buggy > cpu's to eliminate the CLFLUSH.
Here is my first question: does this matter at all? Otherwise I don't see a point.
-hpa
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