linux-kernel - Re: [PATCH v3] powerpc/mm: fix undefined reference to `.__kernel_map

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAAmzW4M3O81wBFeZ+JEVZnjRwMNwXnPKeL62Zz96xe_6a7WZpg@mail.gmail.com>
Date:	Wed, 28 Jan 2015 10:33:59 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Kim Phillips <kim.phillips@...escale.com>,
	Akinobu Mita <akinobu.mita@...il.com>,
	Konstantin Khlebnikov <k.khlebnikov@...sung.com>,
	Rik van Riel <riel@...hat.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	josh@...htriplett.org, LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...com>, Minchan Kim <minchan@...nel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Johannes Weiner <hannes@...xchg.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Scott Wood <scottwood@...escale.com>
Subject: Re: [PATCH v3] powerpc/mm: fix undefined reference to
 `.__kernel_map_pages' on FSL PPC64

2015-01-28 10:01 GMT+09:00 Michael Ellerman <mpe@...erman.id.au>:
> On Mon, 2015-01-26 at 13:22 -0600, Kim Phillips wrote:
>> 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@...escale.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().
>
> I'd be happy to take this through the powerpc tree for 3.20, but for this:
>
>> depends on:
>> From: Joonsoo Kim <iamjoonsoo.kim@....com>
>> Date: Thu, 22 Jan 2015 10:28:58 +0900
>> Subject: [PATCH] mm/debug_pagealloc: fix build failure on ppc and some other archs
>
> I don't have that patch in my tree.
>
> But in what way does this patch depend on that one?
>
> It looks to me like it'd be safe to take this on its own, or am I wrong?
>

Hello,

These two patches are merged to Andrew's tree now.

Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/