On Thu, 9 Mar 2006, Paul Mackerras wrote:
>
> If you ask me, the need for mmiowb on some platforms merely shows that
> those platforms' implementations of spinlocks and read*/write* are
> buggy...
You could also state that same as
"If you ask me, the need for mmiowb on some platforms merely shows
that those platforms perform like a bat out of hell, and I think
they should be slower"
because the fact is, x86 memory barrier rules are just about optimal for
performance.
Linus
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