diff options
Diffstat (limited to 'arch/x86/include/asm/pgtable_32.h')
-rw-r--r-- | arch/x86/include/asm/pgtable_32.h | 88 |
1 files changed, 1 insertions, 87 deletions
diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h index 72b020deb46..97612fc7632 100644 --- a/arch/x86/include/asm/pgtable_32.h +++ b/arch/x86/include/asm/pgtable_32.h | |||
@@ -1,6 +1,7 @@ | |||
1 | #ifndef _ASM_X86_PGTABLE_32_H | 1 | #ifndef _ASM_X86_PGTABLE_32_H |
2 | #define _ASM_X86_PGTABLE_32_H | 2 | #define _ASM_X86_PGTABLE_32_H |
3 | 3 | ||
4 | #include <asm/pgtable_32_types.h> | ||
4 | 5 | ||
5 | /* | 6 | /* |
6 | * The Linux memory management assumes a three-level page table setup. On | 7 | * The Linux memory management assumes a three-level page table setup. On |
@@ -33,47 +34,6 @@ void paging_init(void); | |||
33 | 34 | ||
34 | extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); | 35 | extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); |
35 | 36 | ||
36 | /* | ||
37 | * The Linux x86 paging architecture is 'compile-time dual-mode', it | ||
38 | * implements both the traditional 2-level x86 page tables and the | ||
39 | * newer 3-level PAE-mode page tables. | ||
40 | */ | ||
41 | #ifdef CONFIG_X86_PAE | ||
42 | # include <asm/pgtable-3level-defs.h> | ||
43 | # define PMD_SIZE (1UL << PMD_SHIFT) | ||
44 | # define PMD_MASK (~(PMD_SIZE - 1)) | ||
45 | #else | ||
46 | # include <asm/pgtable-2level-defs.h> | ||
47 | #endif | ||
48 | |||
49 | #define PGDIR_SIZE (1UL << PGDIR_SHIFT) | ||
50 | #define PGDIR_MASK (~(PGDIR_SIZE - 1)) | ||
51 | |||
52 | /* Just any arbitrary offset to the start of the vmalloc VM area: the | ||
53 | * current 8MB value just means that there will be a 8MB "hole" after the | ||
54 | * physical memory until the kernel virtual memory starts. That means that | ||
55 | * any out-of-bounds memory accesses will hopefully be caught. | ||
56 | * The vmalloc() routines leaves a hole of 4kB between each vmalloced | ||
57 | * area for the same reason. ;) | ||
58 | */ | ||
59 | #define VMALLOC_OFFSET (8 * 1024 * 1024) | ||
60 | #define VMALLOC_START ((unsigned long)high_memory + VMALLOC_OFFSET) | ||
61 | #ifdef CONFIG_X86_PAE | ||
62 | #define LAST_PKMAP 512 | ||
63 | #else | ||
64 | #define LAST_PKMAP 1024 | ||
65 | #endif | ||
66 | |||
67 | #define PKMAP_BASE ((FIXADDR_BOOT_START - PAGE_SIZE * (LAST_PKMAP + 1)) \ | ||
68 | & PMD_MASK) | ||
69 | |||
70 | #ifdef CONFIG_HIGHMEM | ||
71 | # define VMALLOC_END (PKMAP_BASE - 2 * PAGE_SIZE) | ||
72 | #else | ||
73 | # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) | ||
74 | #endif | ||
75 | |||
76 | #define MAXMEM (VMALLOC_END - PAGE_OFFSET - __VMALLOC_RESERVE) | ||
77 | 37 | ||
78 | /* | 38 | /* |
79 | * Define this if things work differently on an i386 and an i486: | 39 | * Define this if things work differently on an i386 and an i486: |
@@ -85,55 +45,12 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); | |||
85 | /* The boot page tables (all created as a single array) */ | 45 | /* The boot page tables (all created as a single array) */ |
86 | extern unsigned long pg0[]; | 46 | extern unsigned long pg0[]; |
87 | 47 | ||
88 | #define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE)) | ||
89 | |||
90 | /* To avoid harmful races, pmd_none(x) should check only the lower when PAE */ | ||
91 | #define pmd_none(x) (!(unsigned long)pmd_val((x))) | ||
92 | #define pmd_present(x) (pmd_val((x)) & _PAGE_PRESENT) | ||
93 | #define pmd_bad(x) ((pmd_val(x) & (PTE_FLAGS_MASK & ~_PAGE_USER)) != _KERNPG_TABLE) | ||
94 | |||
95 | #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) | ||
96 | |||
97 | #ifdef CONFIG_X86_PAE | 48 | #ifdef CONFIG_X86_PAE |
98 | # include <asm/pgtable-3level.h> | 49 | # include <asm/pgtable-3level.h> |
99 | #else | 50 | #else |
100 | # include <asm/pgtable-2level.h> | 51 | # include <asm/pgtable-2level.h> |
101 | #endif | 52 | #endif |
102 | 53 | ||
103 | /* | ||
104 | * Conversion functions: convert a page and protection to a page entry, | ||
105 | * and a page entry and page directory to the page they refer to. | ||
106 | */ | ||
107 | #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) | ||
108 | |||
109 | |||
110 | static inline int pud_large(pud_t pud) { return 0; } | ||
111 | |||
112 | /* | ||
113 | * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD] | ||
114 | * | ||
115 | * this macro returns the index of the entry in the pmd page which would | ||
116 | * control the given virtual address | ||
117 | */ | ||
118 | #define pmd_index(address) \ | ||
119 | (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) | ||
120 | |||
121 | /* | ||
122 | * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE] | ||
123 | * | ||
124 | * this macro returns the index of the entry in the pte page which would | ||
125 | * control the given virtual address | ||
126 | */ | ||
127 | #define pte_index(address) \ | ||
128 | (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) | ||
129 | #define pte_offset_kernel(dir, address) \ | ||
130 | ((pte_t *)pmd_page_vaddr(*(dir)) + pte_index((address))) | ||
131 | |||
132 | #define pmd_page(pmd) (pfn_to_page(pmd_val((pmd)) >> PAGE_SHIFT)) | ||
133 | |||
134 | #define pmd_page_vaddr(pmd) \ | ||
135 | ((unsigned long)__va(pmd_val((pmd)) & PTE_PFN_MASK)) | ||
136 | |||
137 | #if defined(CONFIG_HIGHPTE) | 54 | #if defined(CONFIG_HIGHPTE) |
138 | #define pte_offset_map(dir, address) \ | 55 | #define pte_offset_map(dir, address) \ |
139 | ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE0) + \ | 56 | ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE0) + \ |
@@ -176,7 +93,4 @@ do { \ | |||
176 | #define kern_addr_valid(kaddr) (0) | 93 | #define kern_addr_valid(kaddr) (0) |
177 | #endif | 94 | #endif |
178 | 95 | ||
179 | #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ | ||
180 | remap_pfn_range(vma, vaddr, pfn, size, prot) | ||
181 | |||
182 | #endif /* _ASM_X86_PGTABLE_32_H */ | 96 | #endif /* _ASM_X86_PGTABLE_32_H */ |