[tip:x86/vdso] x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.c

["tip-bot for H. Peter Anvin" <hpa@linux.intel.com>]

Commit-ID:  fab1167c4698e3ff11ebb06281d78def6c53728b
Gitweb:     http://git.kernel.org/tip/fab1167c4698e3ff11ebb06281d78def6c53728b
Author:     H. Peter Anvin <hpa@linux.intel.com>
AuthorDate: Mon, 15 Aug 2011 22:28:56 -0700
Committer:  H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Tue, 16 Aug 2011 08:04:02 -0700

x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.c

arch/x86/mm/fault.c now depend on having the symbol VSYSCALL_START
defined, which is best handled by including <asm/fixmap.h> (it isn't
unreasonable we may want other fixed addresses in this file in the
future, and so it is cleaner than including <asm/vsyscall.h>
directly.)

This addresses an x86-64 allnoconfig build failure.  On other
configurations it was masked by an indirect path:

<asm/smp.h> -> <asm/apic.h> -> <asm/fixmap.h> -> <asm/vsyscall.h>

... however, the first such include is conditional on CONFIG_X86_LOCAL_APIC.

Originally-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/CA%2B55aFxsOMc9=p02r8-QhJ=h=Mqwckk4_Pnx9LQt5%2BfqMp_exQ@mail.gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
 arch/x86/mm/fault.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 247aae3..f2d4c9d 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -17,6 +17,7 @@
 #include <asm/traps.h>			/* dotraplinkage, ...		*/
 #include <asm/pgalloc.h>		/* pgd_*(), ...			*/
 #include <asm/kmemcheck.h>		/* kmemcheck_*(), ...		*/
+#include <asm/fixmap.h>			/* VSYSCALL_START		*/
 
 /*
  * Page fault error code bits: