On Fri, May 29, 2009 at 12:10:24PM -0400, Rik van Riel wrote:Andi Kleen wrote:On Wed, May 27, 2009 at 10:15:10PM +0100, Alan Cox wrote:Could we use a combination of, say PG_reserved andOn Wed, 27 May 2009 22:12:26 +0200 (CEST)Right now a page must be present with PG_reserved, otherwise /dev/mem, /proc/kcore
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
Hardware poisoned pages need special handling in the VM and shouldn't be touched again. This requires a new page flag. Define it here.Why can't you use PG_reserved ? That already indicates the page may not
even be present (which is effectively your situation at that point).
lots of other things will explode.
PG_writeback to keep /dev/mem and /proc/kcore from
exploding ?
They should just check for poisoned pages.