powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT

Switch to using the Power ISA defined PTE format when we have a 64-bit
PTE.  This makes the code handling between fsl-booke and book3e-64
similiar for TLB faults.

Additionally this lets use take advantage of the page size encodings and
full permissions that the HW PTE defines.

Also defined _PMD_PRESENT, _PMD_PRESENT_MASK, and _PMD_BAD since the
32-bit ppc arch code expects them.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

3 files changed, 5 insertions, 7 deletions

diff --git a/arch/powerpc/include/asm/pgtable-ppc32.h b/arch/powerpc/include/asm/pgtable-ppc32.h
index f2c52e253956..55646adfa843 100644
--- a/arch/powerpc/include/asm/pgtable-ppc32.h
+++ b/arch/powerpc/include/asm/pgtable-ppc32.h
@@ -111,6 +111,8 @@ extern int icache_44x_need_flush;
 #include <asm/pte-40x.h>
 #elif defined(CONFIG_44x)
 #include <asm/pte-44x.h>
+#elif defined(CONFIG_FSL_BOOKE) && defined(CONFIG_PTE_64BIT)
+#include <asm/pte-book3e.h>
 #elif defined(CONFIG_FSL_BOOKE)
 #include <asm/pte-fsl-booke.h>
 #elif defined(CONFIG_8xx)
diff --git a/arch/powerpc/include/asm/pte-book3e.h b/arch/powerpc/include/asm/pte-book3e.h
index b82b9dc91a7d..082d515930a2 100644
--- a/arch/powerpc/include/asm/pte-book3e.h
+++ b/arch/powerpc/include/asm/pte-book3e.h
@@ -75,6 +75,9 @@
 /* On 32-bit, we never clear the top part of the PTE */
 #ifdef CONFIG_PPC32
 #define _PTE_NONE_MASK  0xffffffff00000000ULL
+#define _PMD_PRESENT    0
+#define _PMD_PRESENT_MASK (PAGE_MASK)
+#define _PMD_BAD        (~PAGE_MASK)
 #endif
 
 #endif /* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/pte-fsl-booke.h b/arch/powerpc/include/asm/pte-fsl-booke.h
index ce8a9e94ce7f..2c12be5f677a 100644
--- a/arch/powerpc/include/asm/pte-fsl-booke.h
+++ b/arch/powerpc/include/asm/pte-fsl-booke.h
@@ -33,13 +33,6 @@
 #define _PAGE_WRITETHRU 0x00400 /* H: W bit */
 #define _PAGE_SPECIAL   0x00800 /* S: Special page */
 
-#ifdef CONFIG_PTE_64BIT
-/* ERPN in a PTE never gets cleared, ignore it */
-#define _PTE_NONE_MASK  0xffffffffffff0000ULL
-/* We extend the size of the PTE flags area when using 64-bit PTEs */
-#define PTE_RPN_SHIFT   (PAGE_SHIFT + 8)
-#endif
-
 #define _PMD_PRESENT    0
 #define _PMD_PRESENT_MASK (PAGE_MASK)
 #define _PMD_BAD        (~PAGE_MASK)