Messages in this thread | | | Subject | Re: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction | From | Benjamin Herrenschmidt <> | Date | Thu, 19 Jun 2008 10:39:31 +1000 |
| |
On Wed, 2008-06-18 at 17:24 -0700, Linus Torvalds wrote: > > On Wed, 18 Jun 2008, Jeremy Fitzhardinge wrote: > > > > Along the lines of: > > Hell no. There's a reason we have a special set_wrprotect() thing. We can > do it more efficiently on native hardware by just clearing the bit > atomically. No need to do the cmpxchg games.
But we can't batch ...
Ben.
| |