It's possible to configure DEBUG_PAGEALLOC without PAGE_POISONING on ppc. Fix building the generic kernel_map_pages() implementation in this case: LD init/built-in.o mm/built-in.o: In function `free_pages_prepare': mm/page_alloc.c:770: undefined reference to `.kernel_map_pages' mm/built-in.o: In function `prep_new_page': mm/page_alloc.c:933: undefined reference to `.kernel_map_pages' mm/built-in.o: In function `map_pages': mm/compaction.c:61: undefined reference to `.kernel_map_pages' make: *** [vmlinux] Error 1 Signed-off-by: Kim Phillips <kim.phillips@xxxxxxxxxxxxx> --- mm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/Makefile b/mm/Makefile index 4bf586e..2956467 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -46,6 +46,7 @@ obj-$(CONFIG_SLOB) += slob.o obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o obj-$(CONFIG_KSM) += ksm.o obj-$(CONFIG_PAGE_POISONING) += debug-pagealloc.o +obj-$(CONFIG_DEBUG_PAGEALLOC) += debug-pagealloc.o obj-$(CONFIG_SLAB) += slab.o obj-$(CONFIG_SLUB) += slub.o obj-$(CONFIG_KMEMCHECK) += kmemcheck.o -- 2.2.2 -- 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>