From 7880f7464546842ee14179bef16a6e14381ea638 Mon Sep 17 00:00:00 2001
From: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Date: Tue, 24 Feb 2009 17:35:13 -0800
Subject: gpu/drm, x86, PAT: routine to keep identity map in sync

Add a function to check and keep identity maps in sync, when changing
any memory type. One of the follow on patches will also use this
routine.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/include/asm/pat.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/x86/include/asm/pat.h')

diff --git a/arch/x86/include/asm/pat.h b/arch/x86/include/asm/pat.h
index b8493b3b9890..abb3c29fc9d5 100644
--- a/arch/x86/include/asm/pat.h
+++ b/arch/x86/include/asm/pat.h
@@ -19,4 +19,7 @@ extern int free_memtype(u64 start, u64 end);
 
 extern void pat_disable(char *reason);
 
+extern int kernel_map_sync_memtype(u64 base, unsigned long size,
+		unsigned long flag);
+
 #endif /* _ASM_X86_PAT_H */
-- 
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