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8d19c99f JF |
1 | #ifndef _ASM_X86_PGTABLE_DEFS_H |
2 | #define _ASM_X86_PGTABLE_DEFS_H | |
3 | ||
4 | #include <linux/const.h> | |
e43623b4 | 5 | #include <asm/page_types.h> |
8d19c99f | 6 | |
d016bf7e | 7 | #define FIRST_USER_ADDRESS 0UL |
8d19c99f JF |
8 | |
9 | #define _PAGE_BIT_PRESENT 0 /* is present */ | |
10 | #define _PAGE_BIT_RW 1 /* writeable */ | |
11 | #define _PAGE_BIT_USER 2 /* userspace addressable */ | |
12 | #define _PAGE_BIT_PWT 3 /* page write through */ | |
13 | #define _PAGE_BIT_PCD 4 /* page cache disabled */ | |
14 | #define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */ | |
15 | #define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */ | |
16 | #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ | |
17 | #define _PAGE_BIT_PAT 7 /* on 4KB pages */ | |
18 | #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ | |
c46a7c81 MG |
19 | #define _PAGE_BIT_SOFTW1 9 /* available for programmer */ |
20 | #define _PAGE_BIT_SOFTW2 10 /* " */ | |
21 | #define _PAGE_BIT_SOFTW3 11 /* " */ | |
8d19c99f | 22 | #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ |
c46a7c81 MG |
23 | #define _PAGE_BIT_SPECIAL _PAGE_BIT_SOFTW1 |
24 | #define _PAGE_BIT_CPA_TEST _PAGE_BIT_SOFTW1 | |
c46a7c81 MG |
25 | #define _PAGE_BIT_HIDDEN _PAGE_BIT_SOFTW3 /* hidden by kmemcheck */ |
26 | #define _PAGE_BIT_SOFT_DIRTY _PAGE_BIT_SOFTW3 /* software dirty tracking */ | |
8d19c99f JF |
27 | #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ |
28 | ||
29 | /* If _PAGE_BIT_PRESENT is clear, we use these: */ | |
30 | /* - if the user mapped it with PROT_NONE; pte_present gives true */ | |
31 | #define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL | |
8d19c99f JF |
32 | |
33 | #define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT) | |
34 | #define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW) | |
35 | #define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER) | |
36 | #define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT) | |
37 | #define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD) | |
38 | #define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED) | |
39 | #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) | |
40 | #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE) | |
41 | #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL) | |
c46a7c81 | 42 | #define _PAGE_SOFTW1 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW1) |
f955371c | 43 | #define _PAGE_SOFTW2 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW2) |
8d19c99f JF |
44 | #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) |
45 | #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) | |
46 | #define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL) | |
47 | #define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST) | |
48 | #define __HAVE_ARCH_PTE_SPECIAL | |
49 | ||
9d31c506 JF |
50 | #ifdef CONFIG_KMEMCHECK |
51 | #define _PAGE_HIDDEN (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) | |
52 | #else | |
53 | #define _PAGE_HIDDEN (_AT(pteval_t, 0)) | |
54 | #endif | |
55 | ||
0f8975ec PE |
56 | /* |
57 | * The same hidden bit is used by kmemcheck, but since kmemcheck | |
58 | * works on kernel pages while soft-dirty engine on user space, | |
59 | * they do not conflict with each other. | |
60 | */ | |
61 | ||
62 | #ifdef CONFIG_MEM_SOFT_DIRTY | |
41bb3476 | 63 | #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_SOFT_DIRTY) |
0f8975ec PE |
64 | #else |
65 | #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 0)) | |
66 | #endif | |
67 | ||
179ef71c CG |
68 | /* |
69 | * Tracking soft dirty bit when a page goes to a swap is tricky. | |
70 | * We need a bit which can be stored in pte _and_ not conflict | |
71 | * with swap entry format. On x86 bits 6 and 7 are *not* involved | |
72 | * into swap entry computation, but bit 6 is used for nonlinear | |
73 | * file mapping, so we borrow bit 7 for soft dirty tracking. | |
fa0f281c CG |
74 | * |
75 | * Please note that this bit must be treated as swap dirty page | |
76 | * mark if and only if the PTE has present bit clear! | |
179ef71c CG |
77 | */ |
78 | #ifdef CONFIG_MEM_SOFT_DIRTY | |
79 | #define _PAGE_SWP_SOFT_DIRTY _PAGE_PSE | |
80 | #else | |
81 | #define _PAGE_SWP_SOFT_DIRTY (_AT(pteval_t, 0)) | |
82 | #endif | |
83 | ||
8d19c99f JF |
84 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) |
85 | #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) | |
86 | #else | |
87 | #define _PAGE_NX (_AT(pteval_t, 0)) | |
88 | #endif | |
89 | ||
8d19c99f JF |
90 | #define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE) |
91 | ||
92 | #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \ | |
93 | _PAGE_ACCESSED | _PAGE_DIRTY) | |
94 | #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \ | |
95 | _PAGE_DIRTY) | |
96 | ||
97 | /* Set of bits not changed in pte_modify */ | |
98 | #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ | |
24f91eba | 99 | _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \ |
21d9ee3e MG |
100 | _PAGE_SOFT_DIRTY) |
101 | #define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE) | |
8d19c99f | 102 | |
281d4078 JG |
103 | /* |
104 | * The cache modes defined here are used to translate between pure SW usage | |
105 | * and the HW defined cache mode bits and/or PAT entries. | |
106 | * | |
107 | * The resulting bits for PWT, PCD and PAT should be chosen in a way | |
108 | * to have the WB mode at index 0 (all bits clear). This is the default | |
109 | * right now and likely would break too much if changed. | |
110 | */ | |
111 | #ifndef __ASSEMBLY__ | |
112 | enum page_cache_mode { | |
113 | _PAGE_CACHE_MODE_WB = 0, | |
114 | _PAGE_CACHE_MODE_WC = 1, | |
115 | _PAGE_CACHE_MODE_UC_MINUS = 2, | |
116 | _PAGE_CACHE_MODE_UC = 3, | |
117 | _PAGE_CACHE_MODE_WT = 4, | |
118 | _PAGE_CACHE_MODE_WP = 5, | |
119 | _PAGE_CACHE_MODE_NUM = 8 | |
120 | }; | |
121 | #endif | |
122 | ||
123 | #define _PAGE_CACHE_MASK (_PAGE_PAT | _PAGE_PCD | _PAGE_PWT) | |
124 | #define _PAGE_NOCACHE (cachemode2protval(_PAGE_CACHE_MODE_UC)) | |
125 | ||
8d19c99f JF |
126 | #define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) |
127 | #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \ | |
128 | _PAGE_ACCESSED | _PAGE_NX) | |
129 | ||
130 | #define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \ | |
131 | _PAGE_USER | _PAGE_ACCESSED) | |
132 | #define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
133 | _PAGE_ACCESSED | _PAGE_NX) | |
134 | #define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
135 | _PAGE_ACCESSED) | |
136 | #define PAGE_COPY PAGE_COPY_NOEXEC | |
137 | #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
138 | _PAGE_ACCESSED | _PAGE_NX) | |
139 | #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
140 | _PAGE_ACCESSED) | |
141 | ||
142 | #define __PAGE_KERNEL_EXEC \ | |
143 | (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) | |
144 | #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) | |
145 | ||
146 | #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) | |
147 | #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) | |
87ad0b71 | 148 | #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_NOCACHE) |
8d19c99f | 149 | #define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) |
9fd67b4e | 150 | #define __PAGE_KERNEL_VVAR (__PAGE_KERNEL_RO | _PAGE_USER) |
8d19c99f | 151 | #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) |
8d19c99f JF |
152 | #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) |
153 | ||
f955371c DV |
154 | #define __PAGE_KERNEL_IO (__PAGE_KERNEL) |
155 | #define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE) | |
8d19c99f JF |
156 | |
157 | #define PAGE_KERNEL __pgprot(__PAGE_KERNEL) | |
158 | #define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO) | |
159 | #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC) | |
160 | #define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX) | |
8d19c99f | 161 | #define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE) |
8d19c99f | 162 | #define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE) |
8d19c99f JF |
163 | #define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC) |
164 | #define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL) | |
9fd67b4e | 165 | #define PAGE_KERNEL_VVAR __pgprot(__PAGE_KERNEL_VVAR) |
8d19c99f JF |
166 | |
167 | #define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO) | |
168 | #define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE) | |
8d19c99f JF |
169 | |
170 | /* xwr */ | |
171 | #define __P000 PAGE_NONE | |
172 | #define __P001 PAGE_READONLY | |
173 | #define __P010 PAGE_COPY | |
174 | #define __P011 PAGE_COPY | |
175 | #define __P100 PAGE_READONLY_EXEC | |
176 | #define __P101 PAGE_READONLY_EXEC | |
177 | #define __P110 PAGE_COPY_EXEC | |
178 | #define __P111 PAGE_COPY_EXEC | |
179 | ||
180 | #define __S000 PAGE_NONE | |
181 | #define __S001 PAGE_READONLY | |
182 | #define __S010 PAGE_SHARED | |
183 | #define __S011 PAGE_SHARED | |
184 | #define __S100 PAGE_READONLY_EXEC | |
185 | #define __S101 PAGE_READONLY_EXEC | |
186 | #define __S110 PAGE_SHARED_EXEC | |
187 | #define __S111 PAGE_SHARED_EXEC | |
188 | ||
189 | /* | |
190 | * early identity mapping pte attrib macros. | |
191 | */ | |
192 | #ifdef CONFIG_X86_64 | |
193 | #define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC | |
194 | #else | |
8d19c99f | 195 | #define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ |
7dda0387 | 196 | #define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ |
8d19c99f JF |
197 | #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ |
198 | #endif | |
199 | ||
54321d94 | 200 | #ifdef CONFIG_X86_32 |
a1ce3928 | 201 | # include <asm/pgtable_32_types.h> |
54321d94 | 202 | #else |
a1ce3928 | 203 | # include <asm/pgtable_64_types.h> |
54321d94 JF |
204 | #endif |
205 | ||
8d19c99f JF |
206 | #ifndef __ASSEMBLY__ |
207 | ||
54321d94 JF |
208 | #include <linux/types.h> |
209 | ||
4be4c1fb | 210 | /* Extracts the PFN from a (pte|pmd|pud|pgd)val_t of a 4KB page */ |
9b3651cb JF |
211 | #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) |
212 | ||
4be4c1fb | 213 | /* Extracts the flags from a (pte|pmd|pud|pgd)val_t of a 4KB page */ |
9b3651cb JF |
214 | #define PTE_FLAGS_MASK (~PTE_PFN_MASK) |
215 | ||
54321d94 JF |
216 | typedef struct pgprot { pgprotval_t pgprot; } pgprot_t; |
217 | ||
218 | typedef struct { pgdval_t pgd; } pgd_t; | |
219 | ||
220 | static inline pgd_t native_make_pgd(pgdval_t val) | |
221 | { | |
222 | return (pgd_t) { val }; | |
223 | } | |
224 | ||
225 | static inline pgdval_t native_pgd_val(pgd_t pgd) | |
226 | { | |
227 | return pgd.pgd; | |
228 | } | |
229 | ||
230 | static inline pgdval_t pgd_flags(pgd_t pgd) | |
231 | { | |
232 | return native_pgd_val(pgd) & PTE_FLAGS_MASK; | |
233 | } | |
234 | ||
98233368 | 235 | #if CONFIG_PGTABLE_LEVELS > 3 |
54321d94 JF |
236 | typedef struct { pudval_t pud; } pud_t; |
237 | ||
238 | static inline pud_t native_make_pud(pmdval_t val) | |
239 | { | |
240 | return (pud_t) { val }; | |
241 | } | |
242 | ||
243 | static inline pudval_t native_pud_val(pud_t pud) | |
244 | { | |
245 | return pud.pud; | |
246 | } | |
247 | #else | |
248 | #include <asm-generic/pgtable-nopud.h> | |
249 | ||
250 | static inline pudval_t native_pud_val(pud_t pud) | |
251 | { | |
252 | return native_pgd_val(pud.pgd); | |
253 | } | |
254 | #endif | |
255 | ||
98233368 | 256 | #if CONFIG_PGTABLE_LEVELS > 2 |
54321d94 JF |
257 | typedef struct { pmdval_t pmd; } pmd_t; |
258 | ||
259 | static inline pmd_t native_make_pmd(pmdval_t val) | |
260 | { | |
261 | return (pmd_t) { val }; | |
262 | } | |
263 | ||
264 | static inline pmdval_t native_pmd_val(pmd_t pmd) | |
265 | { | |
266 | return pmd.pmd; | |
267 | } | |
268 | #else | |
269 | #include <asm-generic/pgtable-nopmd.h> | |
270 | ||
271 | static inline pmdval_t native_pmd_val(pmd_t pmd) | |
272 | { | |
273 | return native_pgd_val(pmd.pud.pgd); | |
274 | } | |
275 | #endif | |
276 | ||
4be4c1fb TK |
277 | static inline pudval_t pud_pfn_mask(pud_t pud) |
278 | { | |
279 | if (native_pud_val(pud) & _PAGE_PSE) | |
70f15287 | 280 | return PHYSICAL_PUD_PAGE_MASK; |
4be4c1fb TK |
281 | else |
282 | return PTE_PFN_MASK; | |
283 | } | |
284 | ||
285 | static inline pudval_t pud_flags_mask(pud_t pud) | |
286 | { | |
70f15287 | 287 | return ~pud_pfn_mask(pud); |
4be4c1fb TK |
288 | } |
289 | ||
54321d94 JF |
290 | static inline pudval_t pud_flags(pud_t pud) |
291 | { | |
f70abb0f | 292 | return native_pud_val(pud) & pud_flags_mask(pud); |
54321d94 JF |
293 | } |
294 | ||
4be4c1fb TK |
295 | static inline pmdval_t pmd_pfn_mask(pmd_t pmd) |
296 | { | |
297 | if (native_pmd_val(pmd) & _PAGE_PSE) | |
70f15287 | 298 | return PHYSICAL_PMD_PAGE_MASK; |
4be4c1fb TK |
299 | else |
300 | return PTE_PFN_MASK; | |
301 | } | |
302 | ||
303 | static inline pmdval_t pmd_flags_mask(pmd_t pmd) | |
304 | { | |
70f15287 | 305 | return ~pmd_pfn_mask(pmd); |
4be4c1fb TK |
306 | } |
307 | ||
54321d94 JF |
308 | static inline pmdval_t pmd_flags(pmd_t pmd) |
309 | { | |
f70abb0f | 310 | return native_pmd_val(pmd) & pmd_flags_mask(pmd); |
54321d94 JF |
311 | } |
312 | ||
313 | static inline pte_t native_make_pte(pteval_t val) | |
314 | { | |
315 | return (pte_t) { .pte = val }; | |
316 | } | |
317 | ||
318 | static inline pteval_t native_pte_val(pte_t pte) | |
319 | { | |
320 | return pte.pte; | |
321 | } | |
322 | ||
323 | static inline pteval_t pte_flags(pte_t pte) | |
324 | { | |
325 | return native_pte_val(pte) & PTE_FLAGS_MASK; | |
326 | } | |
327 | ||
328 | #define pgprot_val(x) ((x).pgprot) | |
329 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
330 | ||
281d4078 JG |
331 | extern uint16_t __cachemode2pte_tbl[_PAGE_CACHE_MODE_NUM]; |
332 | extern uint8_t __pte2cachemode_tbl[8]; | |
333 | ||
334 | #define __pte2cm_idx(cb) \ | |
335 | ((((cb) >> (_PAGE_BIT_PAT - 2)) & 4) | \ | |
336 | (((cb) >> (_PAGE_BIT_PCD - 1)) & 2) | \ | |
337 | (((cb) >> _PAGE_BIT_PWT) & 1)) | |
bd809af1 JG |
338 | #define __cm_idx2pte(i) \ |
339 | ((((i) & 4) << (_PAGE_BIT_PAT - 2)) | \ | |
340 | (((i) & 2) << (_PAGE_BIT_PCD - 1)) | \ | |
341 | (((i) & 1) << _PAGE_BIT_PWT)) | |
281d4078 JG |
342 | |
343 | static inline unsigned long cachemode2protval(enum page_cache_mode pcm) | |
344 | { | |
345 | if (likely(pcm == 0)) | |
346 | return 0; | |
347 | return __cachemode2pte_tbl[pcm]; | |
348 | } | |
349 | static inline pgprot_t cachemode2pgprot(enum page_cache_mode pcm) | |
350 | { | |
351 | return __pgprot(cachemode2protval(pcm)); | |
352 | } | |
353 | static inline enum page_cache_mode pgprot2cachemode(pgprot_t pgprot) | |
354 | { | |
355 | unsigned long masked; | |
356 | ||
357 | masked = pgprot_val(pgprot) & _PAGE_CACHE_MASK; | |
358 | if (likely(masked == 0)) | |
359 | return 0; | |
360 | return __pte2cachemode_tbl[__pte2cm_idx(masked)]; | |
361 | } | |
362 | static inline pgprot_t pgprot_4k_2_large(pgprot_t pgprot) | |
363 | { | |
364 | pgprot_t new; | |
365 | unsigned long val; | |
366 | ||
367 | val = pgprot_val(pgprot); | |
368 | pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) | | |
369 | ((val & _PAGE_PAT) << (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT)); | |
370 | return new; | |
371 | } | |
372 | static inline pgprot_t pgprot_large_2_4k(pgprot_t pgprot) | |
373 | { | |
374 | pgprot_t new; | |
375 | unsigned long val; | |
376 | ||
377 | val = pgprot_val(pgprot); | |
378 | pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) | | |
379 | ((val & _PAGE_PAT_LARGE) >> | |
380 | (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT)); | |
381 | return new; | |
382 | } | |
383 | ||
54321d94 JF |
384 | |
385 | typedef struct page *pgtable_t; | |
386 | ||
8d19c99f | 387 | extern pteval_t __supported_pte_mask; |
c44c9ec0 | 388 | extern void set_nx(void); |
54321d94 | 389 | extern int nx_enabled; |
8d19c99f JF |
390 | |
391 | #define pgprot_writecombine pgprot_writecombine | |
392 | extern pgprot_t pgprot_writecombine(pgprot_t prot); | |
393 | ||
d1b4bfbf TK |
394 | #define pgprot_writethrough pgprot_writethrough |
395 | extern pgprot_t pgprot_writethrough(pgprot_t prot); | |
396 | ||
8d19c99f JF |
397 | /* Indicate that x86 has its own track and untrack pfn vma functions */ |
398 | #define __HAVE_PFNMAP_TRACKING | |
399 | ||
400 | #define __HAVE_PHYS_MEM_ACCESS_PROT | |
401 | struct file; | |
402 | pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, | |
403 | unsigned long size, pgprot_t vma_prot); | |
404 | int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn, | |
405 | unsigned long size, pgprot_t *vma_prot); | |
406 | ||
407 | /* Install a pte for a particular vaddr in kernel space. */ | |
408 | void set_pte_vaddr(unsigned long vaddr, pte_t pte); | |
409 | ||
410 | #ifdef CONFIG_X86_32 | |
7737b215 | 411 | extern void native_pagetable_init(void); |
8d19c99f | 412 | #else |
843b8ed2 | 413 | #define native_pagetable_init paging_init |
8d19c99f JF |
414 | #endif |
415 | ||
416 | struct seq_file; | |
417 | extern void arch_report_meminfo(struct seq_file *m); | |
418 | ||
4cbeb51b | 419 | enum pg_level { |
8d19c99f JF |
420 | PG_LEVEL_NONE, |
421 | PG_LEVEL_4K, | |
422 | PG_LEVEL_2M, | |
423 | PG_LEVEL_1G, | |
424 | PG_LEVEL_NUM | |
425 | }; | |
426 | ||
427 | #ifdef CONFIG_PROC_FS | |
428 | extern void update_page_count(int level, unsigned long pages); | |
429 | #else | |
430 | static inline void update_page_count(int level, unsigned long pages) { } | |
431 | #endif | |
432 | ||
433 | /* | |
434 | * Helper function that returns the kernel pagetable entry controlling | |
435 | * the virtual address 'address'. NULL means no pagetable entry present. | |
436 | * NOTE: the return type is pte_t but if the pmd is PSE then we return it | |
437 | * as a pte too. | |
438 | */ | |
439 | extern pte_t *lookup_address(unsigned long address, unsigned int *level); | |
426e34cc MF |
440 | extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address, |
441 | unsigned int *level); | |
792230c3 | 442 | extern pmd_t *lookup_pmd_address(unsigned long address); |
d7656534 | 443 | extern phys_addr_t slow_virt_to_phys(void *__address); |
d2f7cbe7 BP |
444 | extern int kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn, unsigned long address, |
445 | unsigned numpages, unsigned long page_flags); | |
42a54772 BP |
446 | void kernel_unmap_pages_in_pgd(pgd_t *root, unsigned long address, |
447 | unsigned numpages); | |
8d19c99f JF |
448 | #endif /* !__ASSEMBLY__ */ |
449 | ||
450 | #endif /* _ASM_X86_PGTABLE_DEFS_H */ |