On Thu, 06 Jul 2006 15:12:11 +0200, Franck Bui-Huu <vagabon.xyz@xxxxxxxxx> wrote: > Ok thinking more about it, some platforms may have physical memory > that doesn't start at 0. MIPS doesn't support such platform though it > should be fairly easy. In that case __pa should be defined as: > > #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET + PFN_PHYS(ARCH_PFN_OFFSET)) > > and use in your patch: > > free_area_init_node(0, NODE_DATA(0), zones_size, ARCH_PFN_OFFSET, zholes_size); > > So I would recommend to use ARCH_PFN_OFFSET. Well, currently ARCH_PFN_OFFSET is defined in asm-generic/memory_model.h only for FLATMEM case. I think other memory models do not need it because it is just a case that a first hole begins at pfn 0. --- Atsushi Nemoto
