On Thu, Dec 19, 2013 at 06:25:35PM +0100, Peter Zijlstra wrote: > That said, I would find it very strange indeed if a CLFLUSH doesn't also > flush the store buffer. OK, it explicitly states it does not do that and you indeed need an mfence before the clflush. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html