nommu build failures on ARM in linux-next
Russell King - ARM Linux
linux at arm.linux.org.uk
Thu May 29 11:55:34 PDT 2014
On Thu, May 29, 2014 at 12:53:51PM -0400, Paul Gortmaker wrote:
> Hi Russell,
>
> The allnoconfig builds in linux-next fail because __clear_cr
> lives in mmu.c without any stub or similar in nommu.c
>
> Introduced by:
>
> commit 247e4fff3aa927ad069447e6da05bb966b70dece
> Author: Russell King <rmk+kernel at arm.linux.org.uk>
> Date: Sun Apr 13 18:57:29 2014 +0100
>
> ARM: provide common method to clear bits in CPU control register
>
> Sample failure:
> http://kisskb.ellerman.id.au/kisskb/buildresult/11264405/
ALIGNMENT_TRAP depends on CPU_CP15_MMU, so it's quite reasonable that
__clear_cr should exist in this case - but it doesn't because it's in
mmu.c. I guess we need __clear_cr moved to arch/arm/kernel/setup.c.
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