From 78f1dbde9fd020419313c2a0c3b602ea2427118f Mon Sep 17 00:00:00 2001
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Date: Mon, 10 Sep 2012 02:52:57 +0000
Subject: powerpc/mm: Make some of the PGTABLE_RANGE dependency explicit

slice array size and slice mask size depend on PGTABLE_RANGE.

Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/mm/slice.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'arch/powerpc/mm/slice.c')

diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index b4e996a398b..5829d2a950d 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -34,6 +34,11 @@
 #include <asm/mmu.h>
 #include <asm/spu.h>
 
+/* some sanity checks */
+#if (PGTABLE_RANGE >> 43) > SLICE_MASK_SIZE
+#error PGTABLE_RANGE exceeds slice_mask high_slices size
+#endif
+
 static DEFINE_SPINLOCK(slice_convert_lock);
 
 
-- 
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