1 files changed, 42 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/pgtable-ppc64-64k.h b/arch/powerpc/include/asm/pgtable-ppc64-64k.h
new file mode 100644
index 000000000000..6cc085b945a5
--- /dev/null
+++ b/arch/powerpc/include/asm/pgtable-ppc64-64k.h
@@ -0,0 +1,42 @@
+#ifndef _ASM_POWERPC_PGTABLE_PPC64_64K_H
+#define _ASM_POWERPC_PGTABLE_PPC64_64K_H
+
+#include <asm-generic/pgtable-nopud.h>
+
+
+#define PTE_INDEX_SIZE  12
+#define PMD_INDEX_SIZE  12
+#define PUD_INDEX_SIZE  0
+#define PGD_INDEX_SIZE  4
+
+#ifndef __ASSEMBLY__
+
+#define PTE_TABLE_SIZE  (sizeof(real_pte_t) << PTE_INDEX_SIZE)
+#define PMD_TABLE_SIZE  (sizeof(pmd_t) << PMD_INDEX_SIZE)
+#define PGD_TABLE_SIZE  (sizeof(pgd_t) << PGD_INDEX_SIZE)
+
+#define PTRS_PER_PTE    (1 << PTE_INDEX_SIZE)
+#define PTRS_PER_PMD    (1 << PMD_INDEX_SIZE)
+#define PTRS_PER_PGD    (1 << PGD_INDEX_SIZE)
+
+/* With 4k base page size, hugepage PTEs go at the PMD level */
+#define MIN_HUGEPTE_SHIFT       PAGE_SHIFT
+
+/* PMD_SHIFT determines what a second-level page table entry can map */
+#define PMD_SHIFT       (PAGE_SHIFT + PTE_INDEX_SIZE)
+#define PMD_SIZE        (1UL << PMD_SHIFT)
+#define PMD_MASK        (~(PMD_SIZE-1))
+
+/* PGDIR_SHIFT determines what a third-level page table entry can map */
+#define PGDIR_SHIFT     (PMD_SHIFT + PMD_INDEX_SIZE)
+#define PGDIR_SIZE      (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK      (~(PGDIR_SIZE-1))
+
+#endif  /* __ASSEMBLY__ */
+
+/* Bits to mask out from a PMD to get to the PTE page */
+#define PMD_MASKED_BITS         0x1ff
+/* Bits to mask out from a PGD/PUD to get to the PMD page */
+#define PUD_MASKED_BITS         0x1ff
+
+#endif /* _ASM_POWERPC_PGTABLE_PPC64_64K_H */