From: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx> Date: Tue, 8 Dec 2009 13:03:30 +0000 (GMT) > That would impose some (unacceptable?) limits, and require some funny > code to migrate the pages over to the new mm later (instead of > relocating within the new mm as we do now). I think this approach would create new failure cases that don't exist now. Whether that's acceptable or not is another issue. The forced page table move, and TLB+cache flush that goes along with that, for every single compat task we get now on the other hand is not acceptable :-) I also think this page table move overhead is worse than the non-swapability added by Al's approach. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
