Messages in this thread Patch in this message | | | Date | Mon, 26 Jan 2015 13:22:22 -0600 | From | Kim Phillips <> | Subject | [PATCH v3] powerpc/mm: fix undefined reference to `.__kernel_map_pages' on FSL PPC64 |
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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 for PPC64 machines with PPC_STD_MMU. Fix arch/powerpc/Kconfig to not select ARCH_SUPPORTS_DEBUG_PAGEALLOC when CONFIG_PPC_STD_MMU_64 isn't defined, i.e., for 64-bit book3e builds to use the generic __kernel_map_pages() in mm/debug-pagealloc.c.
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
Signed-off-by: Kim Phillips <kim.phillips@freescale.com> --- v3: - fix wording for hash_utils_64.c implementation pointed out by Michael Ellerman - changed designation from 'mm:' to 'powerpc/mm:', as I think this now belongs in ppc-land
v2: - corrected SUPPORTS_DEBUG_PAGEALLOC selection to enable non-STD_MMU_64 builds to use the generic __kernel_map_pages().
depends on: From: Joonsoo Kim <iamjoonsoo.kim@lge.com> Date: Thu, 22 Jan 2015 10:28:58 +0900 Subject: [PATCH] mm/debug_pagealloc: fix build failure on ppc and some other archs
arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index a2a168e..22b0940 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -256,6 +256,7 @@ config PPC_OF_PLATFORM_PCI default n config ARCH_SUPPORTS_DEBUG_PAGEALLOC + depends on PPC32 || PPC_STD_MMU_64 def_bool y config ARCH_SUPPORTS_UPROBES -- 2.2.2
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