[RFC PATCH 2/7] powerpc/mm: Don't hardcode the hash pte slot shift

[Aneesh Kumar K.V]

Use the #define instead of open-coding the same

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/book3s/64/hash-64k.h | 2 +-
 arch/powerpc/include/asm/book3s/64/pgtable.h  | 2 +-
 arch/powerpc/include/asm/nohash/64/pgtable.h  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h
index 565f9418c25f..681657cabbe4 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-64k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h
@@ -71,7 +71,7 @@ static inline unsigned long __rpte_to_hidx(real_pte_t rpte, unsigned long index)
 {
 	if ((pte_val(rpte.pte) & _PAGE_COMBO))
 		return (unsigned long) rpte.hidx[index] >> 4;
-	return (pte_val(rpte.pte) >> 12) & 0xf;
+	return (pte_val(rpte.pte) >> _PAGE_F_GIX_SHIFT) & 0xf;
 }
 
 static inline pte_t __rpte_to_pte(real_pte_t rpte)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 0b43ca60dcb9..64ef7316ff88 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -50,7 +50,7 @@
 #define __real_pte(a,e,p)	(e)
 #define __rpte_to_pte(r)	(__pte(r))
 #endif
-#define __rpte_to_hidx(r,index)	(pte_val(__rpte_to_pte(r)) >> 12)
+#define __rpte_to_hidx(r,index)	(pte_val(__rpte_to_pte(r)) >>_PAGE_F_GIX_SHIFT)
 
 #define pte_iterate_hashed_subpages(rpte, psize, va, index, shift)       \
 	do {							         \
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index c4dff4d41c26..8969b4c93c4f 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -121,7 +121,7 @@
 #define __real_pte(a,e,p)	(e)
 #define __rpte_to_pte(r)	(__pte(r))
 #endif
-#define __rpte_to_hidx(r,index)	(pte_val(__rpte_to_pte(r)) >> 12)
+#define __rpte_to_hidx(r,index)	(pte_val(__rpte_to_pte(r)) >> _PAGE_F_GIX_SHIFT)
 
 #define pte_iterate_hashed_subpages(rpte, psize, va, index, shift)       \
 	do {							         \
-- 
2.5.0