On Thu, 2015-01-22 at 21:20 -0600, Kim Phillips wrote: > On Fri, 23 Jan 2015 08:49:36 +0900 > Akinobu Mita <akinobu.mita@xxxxxxxxx> wrote: > > > 2015-01-23 5:41 GMT+09:00 Kim Phillips <kim.phillips@xxxxxxxxxxxxx>: > > > Thanks. Now I get this: > > > > > > LD init/built-in.o > > > mm/built-in.o: In function `kernel_map_pages': > > > include/linux/mm.h:2076: undefined reference to `.__kernel_map_pages' > > > include/linux/mm.h:2076: undefined reference to `.__kernel_map_pages' > > > include/linux/mm.h:2076: undefined reference to `.__kernel_map_pages' > > > Makefile:925: recipe for target 'vmlinux' failed > > > make: *** [vmlinux] Error 1 > > > > > > but, AFAICT, that's not because this patch is invalid: it's because > > > __kernel_map_pages() isn't implemented in > > > arch/powerpc/mm/pgtable_64.c, i.e., for non-PPC_STD_MMU_64 PPC64 > > > machines. > > > > Then, in order to use generic __kernel_map_pages() in mm/debug-pagealloc.c, > > CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC shouldn't be selected in > > arch/powerpc/Kconfig, when CONFIG_PPC_STD_MMU_64 isn't defined. > > Thanks. I'm still build-testing this now: > > From 082911ee947246ff962ef21863c45ec467455c40 Mon Sep 17 00:00:00 2001 > From: Kim Phillips <kim.phillips@xxxxxxxxxxxxx> > Date: Thu, 22 Jan 2015 20:42:40 -0600 > Subject: [PATCH v2] mm: fix undefined reference to `.__kernel_map_pages' on FSL > PPC64 > > arch/powerpc has __kernel_map_pages implementations in mm/pgtable_32.c, and > mm/hash_utils_64.c, of which the former is built for PPC32, and the latter > PPC64's without PPC_STD_MMU. That last part is wrong. hash_utils_64.c is built for CONFIG_PPC_STD_MMU_64, which is: config PPC_STD_MMU_64 def_bool y depends on PPC_STD_MMU && PPC64 The problem is when you have PPC64 && !PPC_STD_MMU. cheers -- 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>