Messages in this thread | | | Date | Fri, 26 Nov 1999 03:15:04 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: [patch] smp-2.3.30-A1, mb(), wmb(), rmb() |
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On Thu, 25 Nov 1999, Andrea Arcangeli wrote:
> Your "addl $0, (%%esp)" make no sense to me.
It's basically a dummy store, which prevents previous reads executing after the write has been executed. [It's guaranteed to be a store and it will never be optimized away by the CPU as a no-op.]
-- mingo
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