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On Sat, Mar 13, 2004 at 03:50:03PM +1100, Benjamin Herrenschmidt wrote: > It would be wise to make the dcbz as long as possible in "advance" > before the actual write to the cache line. I guess we could try "pre-dcbz" ala the dcbt prefetch code. Even dcbz right before stw is probably cheaper than RAM loading data that will be totally overwritten. It's hard to lose eliminating bus I/O (especially reads). Any comments on the dcbt prefetch patch? -Bryan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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