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. > It's also not all that informative. Are you supposed to set the > memory back before iounmapping? Setting back to WB before iounmap is not required, but set_memory_wb is used when it wants to put it back to WB before unmapping. > Can you do this with set_memory_wc on > an uncached mapping? The table lists interfaces and their intended usage. Using set_memory_wc on an uncached mapping probably works, but is not an intended use. 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>