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SubjectRe: [PATCH 3.1-rc2] x86: fix mm/fault.c build
On Mon, Aug 15, 2011 at 10:18 AM, Randy Dunlap <rdunlap@xenotime.net> wrote:
> From: Randy Dunlap <rdunlap@xenotime.net>
>
> arch/x86/mm/fault.c needs to include asm/vsyscall.h to fix a
> build error:
>
> arch/x86/mm/fault.c: In function '__bad_area_nosemaphore':
> arch/x86/mm/fault.c:728: error: 'VSYSCALL_START' undeclared (first use in this function)

Grr. This seems to be one of those "under certain configurations
only". I can trigger it with "allnoconfig", but not with my common
configuration or "allmodconfig"

I just don't see *why* it ends up being config-related. Can anybody
fill me in? It looks like some header file does a conditional include
of fixmap.h or something. Urgh. I *hate* those kinds of "some configs
work" cases.

Linus


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