Re: [PATCH 0/2] jump label: 2.6.38 updates

[H. Peter Anvin]

On 02/16/2011 05:55 PM, Masami Hiramatsu wrote:
> 
> Hmm, I think that is miss-coding ll/sc.
> If I understand correctly, usually cache invalidation should be done
> right before storing value, as MSI protocol does.
> (or, sc should atomically invalidate the cache line)
> 

I suspect in this case one should flush the cache line before ll (a
cache flush will typically invalidate the ll/sc link.)

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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