Hello hpa, On Wed, Apr 24, 2013 at 03:51:12PM -0700, H. Peter Anvin wrote: > On 04/10/2013 01:02 AM, Minchan Kim wrote: > > > > When I am looking at the code, I was wonder about the logic of GHZP(aka, > > get_huge_zero_page) reference handling. The logic depends on that page > > allocator never alocate PFN 0. > > > > Who makes sure it? What happens if allocator allocates PFN 0? > > I don't know all of architecture makes sure it. > > You investigated it for all arches? > > > > This isn't manifest, right? At least on x86 we should never, ever > allocate PFN 0. Thanks for the confirm. -- Kind regards, Minchan Kim -- 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>