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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) | |
3 | * Copyright 2003 PathScale, Inc. | |
4 | * Derived from include/asm-i386/pgtable.h | |
5 | * Licensed under the GPL | |
6 | */ | |
7 | ||
8 | #ifndef __UM_PGTABLE_2LEVEL_H | |
9 | #define __UM_PGTABLE_2LEVEL_H | |
10 | ||
9849a569 | 11 | #define __ARCH_USE_5LEVEL_HACK |
1da177e4 LT |
12 | #include <asm-generic/pgtable-nopmd.h> |
13 | ||
14 | /* PGDIR_SHIFT determines what a third-level page table entry can map */ | |
15 | ||
16 | #define PGDIR_SHIFT 22 | |
17 | #define PGDIR_SIZE (1UL << PGDIR_SHIFT) | |
18 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) | |
19 | ||
20 | /* | |
21 | * entries per page directory level: the i386 is two-level, so | |
22 | * we don't really have any PMD directory physically. | |
23 | */ | |
24 | #define PTRS_PER_PTE 1024 | |
25 | #define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE) | |
26 | #define PTRS_PER_PGD 1024 | |
d016bf7e | 27 | #define FIRST_USER_ADDRESS 0UL |
1da177e4 LT |
28 | |
29 | #define pte_ERROR(e) \ | |
30 | printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \ | |
31 | pte_val(e)) | |
32 | #define pgd_ERROR(e) \ | |
33 | printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), \ | |
34 | pgd_val(e)) | |
35 | ||
36 | static inline int pgd_newpage(pgd_t pgd) { return 0; } | |
37 | static inline void pgd_mkuptodate(pgd_t pgd) { } | |
38 | ||
1da177e4 LT |
39 | #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval)) |
40 | ||
1da177e4 LT |
41 | #define pte_pfn(x) phys_to_pfn(pte_val(x)) |
42 | #define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot)) | |
43 | #define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot)) | |
44 | ||
1da177e4 | 45 | #endif |