On Thu, 2013-10-10 at 10:12 -0700, H. Peter Anvin wrote: > On 10/10/2013 09:59 AM, Toshi Kani wrote: > > On Thu, 2013-10-10 at 12:55 -0400, Tejun Heo wrote: > >> On Thu, Oct 10, 2013 at 10:50:40AM -0600, Toshi Kani wrote: > >>> Can you elaborate why we need to parse the device hierarchy before > >>> setting up page tables? > >> > >> How else can one put the page tables on the "local device"? Am I > >> missing something? > > > > The local page table item is gone under the current plan as you > > suggested... > > > > That would be a significant performance regression. In earlier discussions, Tejun pointed out that huge mappings dismiss the benefit of local page tables. https://lkml.org/lkml/2013/8/23/245 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>