MIPS: Transparent Huge Pages support

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h
index 1e2642c360a8..9ce1ac782448 100644
--- a/arch/mips/include/asm/pgtable-bits.h
+++ b/arch/mips/include/asm/pgtable-bits.h
@@ -137,8 +137,17 @@
 #define _PAGE_HUGE              ({BUG(); 1; })  /* Dummy value */
 #endif
 
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
+/* huge tlb page */
+#define _PAGE_SPLITTING_SHIFT   (_PAGE_HUGE_SHIFT + 1)
+#define _PAGE_SPLITTING         (1 << _PAGE_SPLITTING_SHIFT)
+#else
+#define _PAGE_SPLITTING_SHIFT   (_PAGE_HUGE_SHIFT)
+#define _PAGE_SPLITTING         ({BUG(); 1; })  /* Dummy value */
+#endif
+
 /* Page cannot be executed */
-#define _PAGE_NO_EXEC_SHIFT     (cpu_has_rixi ? _PAGE_HUGE_SHIFT + 1 : _PAGE_HUGE_SHIFT)
+#define _PAGE_NO_EXEC_SHIFT     (cpu_has_rixi ? _PAGE_SPLITTING_SHIFT + 1 : _PAGE_SPLITTING_SHIFT)
 #define _PAGE_NO_EXEC           ({BUG_ON(!cpu_has_rixi); 1 << _PAGE_NO_EXEC_SHIFT; })
 
 /* Page cannot be read */