On Wed, Dec 22, 2010 at 11:22 AM, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > The kernel has an 8M tmpailas space (originally designed for copying > and clearing pages but now only used for clearing). The idea is > to place zeros into the cache above a physical page rather than into > the physical page and flush the cache, because often the zeros end up > being replaced quickly anyway. > > We can also use the tmpalias space for flushing a page. The difference > here is that we have to do tmpalias processing in the non access data and > instruction traps. The principle is the same: as long as we know the physical > address and have a virtual address congruent to the real one, the flush will > be effective. > > In order to use the tmpalias space, the icache miss path has to be enhanced to > check for the alias region to make the fic instruction effective. James, Given that you are currently maintaining the parisc tree, do you have a public branch that we can pull from to test things? I've normally been using: git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6.git I would like to test this patch, and the next one you posted, and I was wondering if you have them on a public branch. Cheers, Carlos. -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
