On Mon, 11 Sep 2006, Atsushi Nemoto wrote: > > What's wrong with just letting a TLB fault happen? > > It might add a little overhead to usual TLB refill handling. The > overhead might be neglectable, but I'm not sure. There is no need to change the refill handler -- only the general TLBL exception has to be modified. And this one may be not too critical -- the change required is in the path to mark pages accessed. Is the path frequent enough to seek a complex solution while a simple one would just work? Maciej