Hello, On Fri, Aug 23, 2013 at 04:24:06PM +0200, H. Peter Anvin wrote: > Well... relying on MTRRs is a big cost in complexity and failure modes. Yeah, it's true that MTRRs are nasty. On the other hand, we've been doing that for over a decade and are still doing it anyway if I'm not mistaken. It probably isn't a big difference but it's still a bit sad that this is likely causing small performance regression out in the wild. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>