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. -hpa -- 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>