On Wed, 2014-09-10 at 13:29 -0700, Andy Lutomirski wrote: > On Wed, Sep 10, 2014 at 1:12 PM, Toshi Kani <toshi.kani@xxxxxx> wrote: > > On Wed, 2014-09-10 at 11:30 -0700, Andy Lutomirski wrote: > >> On Wed, Sep 10, 2014 at 9:51 AM, Toshi Kani <toshi.kani@xxxxxx> wrote: > >> > +Drivers may map the entire NV-DIMM range with ioremap_cache and then change > >> > +a specific range to wt with set_memory_wt. > >> > >> That's mighty specific :) > > > > How about below? > > > > Drivers may use set_memory_wt to set WT type for cached reserve ranges. > > Do they have to be cached? Yes, set_memory_xyz only supports WB->type->WB transition. > How about: > > Drivers may call set_memory_wt on ioremapped ranges. In this case, > there is no need to change the memory type back before calling > iounmap. > > (Or only on cached ioremapped ranges if that is, in fact, the case.) Sounds good. Yes, I will use cashed ioremapped ranges. Thanks, -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>