On Wed, Oct 07, 2015 at 10:33:10AM -0400, Brian Gerst wrote: > This is an optimization, since NT is unlikely to be set. The forward > branch is usually predicted as not taken, and it keeps these rarely > used instructions out of the hot cache.
Ah, slick. Because branch predictors mark new branches as not taken and this particular one will remain non-taken in the majority of the cases. I think this warrants a mention in the comment above it though... -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/