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gerrit-public.fairphone.software / kernel / msm-4.9 / 75b1bdf51c4b5c383296de2df9ad83b1b8dd287f / . / arch / sh / include / asm / pgtable-2level.h
blob: 19bd89db17e71749b1e7bb07355e2152e4c92408 [file] [log] [blame]
Paul Mundte44d6c42010-01-13 19:18:39 +0900[diff] [blame]1#ifndef __ASM_SH_PGTABLE_2LEVEL_H
2#define __ASM_SH_PGTABLE_2LEVEL_H
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]3
4#include <asm-generic/pgtable-nopmd.h>
5
6/*
7 * traditional two-level paging structure
8 */
Paul Mundt782bb5a2010-01-13 19:11:14 +0900[diff] [blame]9#define PAGETABLE_LEVELS 2
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]10
11/* PTE bits */
Paul Mundt782bb5a2010-01-13 19:11:14 +0900[diff] [blame]12#define PTE_MAGNITUDE 2 /* 32-bit PTEs */
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]13
Paul Mundt782bb5a2010-01-13 19:11:14 +0900[diff] [blame]14#define PTE_SHIFT PAGE_SHIFT
15#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]16
17/* PGD bits */
Paul Mundt782bb5a2010-01-13 19:11:14 +0900[diff] [blame]18#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS)
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]19
Paul Mundt782bb5a2010-01-13 19:11:14 +0900[diff] [blame]20#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE))
Matt Flemingb73c8062009-11-25 22:00:08 +0000[diff] [blame]21#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
22
Paul Mundte44d6c42010-01-13 19:18:39 +0900[diff] [blame]23#endif /* __ASM_SH_PGTABLE_2LEVEL_H */