From: Kim Phillips <kim.phillips@freescale.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Akinobu Mita <akinobu.mita@gmail.com>,
Konstantin Khlebnikov <k.khlebnikov@samsung.com>,
Rik van Riel <riel@redhat.com>, <linux-mm@kvack.org>,
<josh@joshtriplett.org>, LKML <linux-kernel@vger.kernel.org>,
Jens Axboe <axboe@fb.com>, Minchan Kim <minchan@kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Johannes Weiner <hannes@cmpxchg.org>,
Sasha Levin <sasha.levin@oracle.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Andrew Morton <akpm@linux-foundation.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Scott Wood <scottwood@freescale.com>
Subject: [PATCH v3] powerpc/mm: fix undefined reference to `.__kernel_map_pages' on FSL PPC64
Date: Mon, 26 Jan 2015 13:22:22 -0600 [thread overview]
Message-ID: <20150126132222.6477257be204a3332601ef11@freescale.com> (raw)
In-Reply-To: <1421987091.24984.13.camel@ellerman.id.au>
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
next prev parent reply other threads:[~2015-01-26 19:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 20:02 [PATCH 2/2] mm: fix undefined reference to `.kernel_map_pages' on PPC builds Kim Phillips
2015-01-20 23:01 ` josh
2015-01-21 0:07 ` Andrew Morton
2015-01-21 12:57 ` Akinobu Mita
2015-01-22 1:45 ` Joonsoo Kim
2015-01-22 20:41 ` Kim Phillips
2015-01-22 23:49 ` Akinobu Mita
2015-01-23 3:20 ` Kim Phillips
2015-01-23 4:24 ` Michael Ellerman
2015-01-26 19:22 ` Kim Phillips [this message]
2015-01-28 1:01 ` [PATCH v3] powerpc/mm: fix undefined reference to `.__kernel_map_pages' on FSL PPC64 Michael Ellerman
2015-01-28 1:33 ` Joonsoo Kim
2015-01-28 2:57 ` Andrew Morton
2015-01-28 3:22 ` Michael Ellerman
2015-01-28 20:14 ` Kim Phillips
2015-01-29 4:05 ` Michael Ellerman
2015-01-26 19:24 ` [PATCH 2/2] mm: fix undefined reference to `.kernel_map_pages' on PPC builds Kim Phillips
2015-01-27 7:56 ` Joonsoo Kim
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