On Fri, 05 Oct 2007 12:40:05 -0700 Jeremy Fitzhardinge <[EMAIL PROTECTED]> wrote:
> Well, isn't the correct fix to make Xen take all the pagetable locks > while pinning/unpinning? Adding exception handling to > test_and_clear_bit would solve this particular race, but are there > others (either now or potentially)? Seems fragile. You're right, holding the pagetable lock(s) across pinning/unpinning operations would avoid the problem too. While we do not care about the accessed bit, there are similar operations going on with the dirty bit - which is a lot more important :) -- All Rights Reversed - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
