1 files changed, 48 insertions, 0 deletions

diff --git a/arch/x86/include/asm/pgtable-3level_types.h b/arch/x86/include/asm/pgtable-3level_types.h
new file mode 100644
index 00000000000..1bd5876c864
--- /dev/null
+++ b/arch/x86/include/asm/pgtable-3level_types.h
@@ -0,0 +1,48 @@
+#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
+#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
+typedef u64     pteval_t;
+typedef u64     pmdval_t;
+typedef u64     pudval_t;
+typedef u64     pgdval_t;
+typedef u64     pgprotval_t;
+
+typedef union {
+        struct {
+                unsigned long pte_low, pte_high;
+        };
+        pteval_t pte;
+} pte_t;
+#endif  /* !__ASSEMBLY__ */
+
+#ifdef CONFIG_PARAVIRT
+#define SHARED_KERNEL_PMD       (pv_info.shared_kernel_pmd)
+#else
+#define SHARED_KERNEL_PMD       1
+#endif
+
+#define PAGETABLE_LEVELS        3
+
+/*
+ * PGDIR_SHIFT determines what a top-level page table entry can map
+ */
+#define PGDIR_SHIFT     30
+#define PTRS_PER_PGD    4
+
+/*
+ * PMD_SHIFT determines the size of the area a middle-level
+ * page table can map
+ */
+#define PMD_SHIFT       21
+#define PTRS_PER_PMD    512
+
+/*
+ * entries per page directory level
+ */
+#define PTRS_PER_PTE    512
+
+
+#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */