1 files changed, 23 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable-2level.h b/arch/sh/include/asm/pgtable-2level.h
new file mode 100644
index 0000000..19bd89d
--- /dev/null
+++ b/arch/sh/include/asm/pgtable-2level.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_SH_PGTABLE_2LEVEL_H
+#define __ASM_SH_PGTABLE_2LEVEL_H
+
+#include <asm-generic/pgtable-nopmd.h>
+
+/*
+ * traditional two-level paging structure
+ */
+#define PAGETABLE_LEVELS	2
+
+/* PTE bits */
+#define PTE_MAGNITUDE		2	/* 32-bit PTEs */
+
+#define PTE_SHIFT		PAGE_SHIFT
+#define PTE_BITS		(PTE_SHIFT - PTE_MAGNITUDE)
+
+/* PGD bits */
+#define PGDIR_SHIFT		(PTE_SHIFT + PTE_BITS)
+
+#define PTRS_PER_PGD		(PAGE_SIZE / (1 << PTE_MAGNITUDE))
+#define USER_PTRS_PER_PGD	(TASK_SIZE/PGDIR_SIZE)
+
+#endif /* __ASM_SH_PGTABLE_2LEVEL_H */