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Diffstat (limited to 'arch/x86/include/asm/pgtable_64.h')
-rw-r--r--arch/x86/include/asm/pgtable_64.h113
1 files changed, 2 insertions, 111 deletions
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index ba09289acca..6b87bc6d501 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -2,6 +2,8 @@
2#define _ASM_X86_PGTABLE_64_H 2#define _ASM_X86_PGTABLE_64_H
3 3
4#include <linux/const.h> 4#include <linux/const.h>
5#include <asm/pgtable_64_types.h>
6
5#ifndef __ASSEMBLY__ 7#ifndef __ASSEMBLY__
6 8
7/* 9/*
@@ -11,7 +13,6 @@
11#include <asm/processor.h> 13#include <asm/processor.h>
12#include <linux/bitops.h> 14#include <linux/bitops.h>
13#include <linux/threads.h> 15#include <linux/threads.h>
14#include <asm/pda.h>
15 16
16extern pud_t level3_kernel_pgt[512]; 17extern pud_t level3_kernel_pgt[512];
17extern pud_t level3_ident_pgt[512]; 18extern pud_t level3_ident_pgt[512];
@@ -26,32 +27,6 @@ extern void paging_init(void);
26 27
27#endif /* !__ASSEMBLY__ */ 28#endif /* !__ASSEMBLY__ */
28 29
29#define SHARED_KERNEL_PMD 0
30
31/*
32 * PGDIR_SHIFT determines what a top-level page table entry can map
33 */
34#define PGDIR_SHIFT 39
35#define PTRS_PER_PGD 512
36
37/*
38 * 3rd level page
39 */
40#define PUD_SHIFT 30
41#define PTRS_PER_PUD 512
42
43/*
44 * PMD_SHIFT determines the size of the area a middle-level
45 * page table can map
46 */
47#define PMD_SHIFT 21
48#define PTRS_PER_PMD 512
49
50/*
51 * entries per page directory level
52 */
53#define PTRS_PER_PTE 512
54
55#ifndef __ASSEMBLY__ 30#ifndef __ASSEMBLY__
56 31
57#define pte_ERROR(e) \ 32#define pte_ERROR(e) \
@@ -67,9 +42,6 @@ extern void paging_init(void);
67 printk("%s:%d: bad pgd %p(%016lx).\n", \ 42 printk("%s:%d: bad pgd %p(%016lx).\n", \
68 __FILE__, __LINE__, &(e), pgd_val(e)) 43 __FILE__, __LINE__, &(e), pgd_val(e))
69 44
70#define pgd_none(x) (!pgd_val(x))
71#define pud_none(x) (!pud_val(x))
72
73struct mm_struct; 45struct mm_struct;
74 46
75void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte); 47void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte);
@@ -134,48 +106,6 @@ static inline void native_pgd_clear(pgd_t *pgd)
134 native_set_pgd(pgd, native_make_pgd(0)); 106 native_set_pgd(pgd, native_make_pgd(0));
135} 107}
136 108
137#define pte_same(a, b) ((a).pte == (b).pte)
138
139#endif /* !__ASSEMBLY__ */
140
141#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
142#define PMD_MASK (~(PMD_SIZE - 1))
143#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
144#define PUD_MASK (~(PUD_SIZE - 1))
145#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
146#define PGDIR_MASK (~(PGDIR_SIZE - 1))
147
148
149#define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL)
150#define VMALLOC_START _AC(0xffffc20000000000, UL)
151#define VMALLOC_END _AC(0xffffe1ffffffffff, UL)
152#define VMEMMAP_START _AC(0xffffe20000000000, UL)
153#define MODULES_VADDR _AC(0xffffffffa0000000, UL)
154#define MODULES_END _AC(0xffffffffff000000, UL)
155#define MODULES_LEN (MODULES_END - MODULES_VADDR)
156
157#ifndef __ASSEMBLY__
158
159static inline int pgd_bad(pgd_t pgd)
160{
161 return (pgd_val(pgd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
162}
163
164static inline int pud_bad(pud_t pud)
165{
166 return (pud_val(pud) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
167}
168
169static inline int pmd_bad(pmd_t pmd)
170{
171 return (pmd_val(pmd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
172}
173
174#define pte_none(x) (!pte_val((x)))
175#define pte_present(x) (pte_val((x)) & (_PAGE_PRESENT | _PAGE_PROTNONE))
176
177#define pages_to_mb(x) ((x) >> (20 - PAGE_SHIFT)) /* FIXME: is this right? */
178
179/* 109/*
180 * Conversion functions: convert a page and protection to a page entry, 110 * Conversion functions: convert a page and protection to a page entry,
181 * and a page entry and page directory to the page they refer to. 111 * and a page entry and page directory to the page they refer to.
@@ -184,41 +114,12 @@ static inline int pmd_bad(pmd_t pmd)
184/* 114/*
185 * Level 4 access. 115 * Level 4 access.
186 */ 116 */
187#define pgd_page_vaddr(pgd) \
188 ((unsigned long)__va((unsigned long)pgd_val((pgd)) & PTE_PFN_MASK))
189#define pgd_page(pgd) (pfn_to_page(pgd_val((pgd)) >> PAGE_SHIFT))
190#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_PRESENT)
191static inline int pgd_large(pgd_t pgd) { return 0; } 117static inline int pgd_large(pgd_t pgd) { return 0; }
192#define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE) 118#define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE)
193 119
194/* PUD - Level3 access */ 120/* PUD - Level3 access */
195/* to find an entry in a page-table-directory. */
196#define pud_page_vaddr(pud) \
197 ((unsigned long)__va(pud_val((pud)) & PHYSICAL_PAGE_MASK))
198#define pud_page(pud) (pfn_to_page(pud_val((pud)) >> PAGE_SHIFT))
199#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
200#define pud_offset(pgd, address) \
201 ((pud_t *)pgd_page_vaddr(*(pgd)) + pud_index((address)))
202#define pud_present(pud) (pud_val((pud)) & _PAGE_PRESENT)
203
204static inline int pud_large(pud_t pte)
205{
206 return (pud_val(pte) & (_PAGE_PSE | _PAGE_PRESENT)) ==
207 (_PAGE_PSE | _PAGE_PRESENT);
208}
209 121
210/* PMD - Level 2 access */ 122/* PMD - Level 2 access */
211#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val((pmd)) & PTE_PFN_MASK))
212#define pmd_page(pmd) (pfn_to_page(pmd_val((pmd)) >> PAGE_SHIFT))
213
214#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
215#define pmd_offset(dir, address) ((pmd_t *)pud_page_vaddr(*(dir)) + \
216 pmd_index(address))
217#define pmd_none(x) (!pmd_val((x)))
218#define pmd_present(x) (pmd_val((x)) & _PAGE_PRESENT)
219#define pfn_pmd(nr, prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val((prot))))
220#define pmd_pfn(x) ((pmd_val((x)) & __PHYSICAL_MASK) >> PAGE_SHIFT)
221
222#define pte_to_pgoff(pte) ((pte_val((pte)) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT) 123#define pte_to_pgoff(pte) ((pte_val((pte)) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
223#define pgoff_to_pte(off) ((pte_t) { .pte = ((off) << PAGE_SHIFT) | \ 124#define pgoff_to_pte(off) ((pte_t) { .pte = ((off) << PAGE_SHIFT) | \
224 _PAGE_FILE }) 125 _PAGE_FILE })
@@ -226,13 +127,6 @@ static inline int pud_large(pud_t pte)
226 127
227/* PTE - Level 1 access. */ 128/* PTE - Level 1 access. */
228 129
229/* page, protection -> pte */
230#define mk_pte(page, pgprot) pfn_pte(page_to_pfn((page)), (pgprot))
231
232#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
233#define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_vaddr(*(dir)) + \
234 pte_index((address)))
235
236/* x86-64 always has all page tables mapped. */ 130/* x86-64 always has all page tables mapped. */
237#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address)) 131#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
238#define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address)) 132#define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address))
@@ -266,9 +160,6 @@ extern int direct_gbpages;
266extern int kern_addr_valid(unsigned long addr); 160extern int kern_addr_valid(unsigned long addr);
267extern void cleanup_highmap(void); 161extern void cleanup_highmap(void);
268 162
269#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
270 remap_pfn_range(vma, vaddr, pfn, size, prot)
271
272#define HAVE_ARCH_UNMAPPED_AREA 163#define HAVE_ARCH_UNMAPPED_AREA
273#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN 164#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
274 165