Line data Source code
1 : /* SPDX-License-Identifier: GPL-2.0 */
2 : #ifndef _ASM_X86_PGTABLE_DEFS_H
3 : #define _ASM_X86_PGTABLE_DEFS_H
4 :
5 : #include <linux/const.h>
6 : #include <linux/mem_encrypt.h>
7 :
8 : #include <asm/page_types.h>
9 :
10 : #define FIRST_USER_ADDRESS 0UL
11 :
12 : #define _PAGE_BIT_PRESENT 0 /* is present */
13 : #define _PAGE_BIT_RW 1 /* writeable */
14 : #define _PAGE_BIT_USER 2 /* userspace addressable */
15 : #define _PAGE_BIT_PWT 3 /* page write through */
16 : #define _PAGE_BIT_PCD 4 /* page cache disabled */
17 : #define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
18 : #define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
19 : #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
20 : #define _PAGE_BIT_PAT 7 /* on 4KB pages */
21 : #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
22 : #define _PAGE_BIT_SOFTW1 9 /* available for programmer */
23 : #define _PAGE_BIT_SOFTW2 10 /* " */
24 : #define _PAGE_BIT_SOFTW3 11 /* " */
25 : #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
26 : #define _PAGE_BIT_SOFTW4 58 /* available for programmer */
27 : #define _PAGE_BIT_PKEY_BIT0 59 /* Protection Keys, bit 1/4 */
28 : #define _PAGE_BIT_PKEY_BIT1 60 /* Protection Keys, bit 2/4 */
29 : #define _PAGE_BIT_PKEY_BIT2 61 /* Protection Keys, bit 3/4 */
30 : #define _PAGE_BIT_PKEY_BIT3 62 /* Protection Keys, bit 4/4 */
31 : #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
32 :
33 : #define _PAGE_BIT_SPECIAL _PAGE_BIT_SOFTW1
34 : #define _PAGE_BIT_CPA_TEST _PAGE_BIT_SOFTW1
35 : #define _PAGE_BIT_UFFD_WP _PAGE_BIT_SOFTW2 /* userfaultfd wrprotected */
36 : #define _PAGE_BIT_SOFT_DIRTY _PAGE_BIT_SOFTW3 /* software dirty tracking */
37 : #define _PAGE_BIT_DEVMAP _PAGE_BIT_SOFTW4
38 :
39 : /* If _PAGE_BIT_PRESENT is clear, we use these: */
40 : /* - if the user mapped it with PROT_NONE; pte_present gives true */
41 : #define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
42 :
43 : #define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
44 : #define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
45 : #define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
46 : #define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
47 : #define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
48 : #define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
49 : #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
50 : #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
51 : #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
52 : #define _PAGE_SOFTW1 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW1)
53 : #define _PAGE_SOFTW2 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW2)
54 : #define _PAGE_SOFTW3 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW3)
55 : #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
56 : #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
57 : #define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
58 : #define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
59 : #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
60 : #define _PAGE_PKEY_BIT0 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT0)
61 : #define _PAGE_PKEY_BIT1 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT1)
62 : #define _PAGE_PKEY_BIT2 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT2)
63 : #define _PAGE_PKEY_BIT3 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT3)
64 : #else
65 : #define _PAGE_PKEY_BIT0 (_AT(pteval_t, 0))
66 : #define _PAGE_PKEY_BIT1 (_AT(pteval_t, 0))
67 : #define _PAGE_PKEY_BIT2 (_AT(pteval_t, 0))
68 : #define _PAGE_PKEY_BIT3 (_AT(pteval_t, 0))
69 : #endif
70 :
71 : #define _PAGE_PKEY_MASK (_PAGE_PKEY_BIT0 | \
72 : _PAGE_PKEY_BIT1 | \
73 : _PAGE_PKEY_BIT2 | \
74 : _PAGE_PKEY_BIT3)
75 :
76 : #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
77 : #define _PAGE_KNL_ERRATUM_MASK (_PAGE_DIRTY | _PAGE_ACCESSED)
78 : #else
79 : #define _PAGE_KNL_ERRATUM_MASK 0
80 : #endif
81 :
82 : #ifdef CONFIG_MEM_SOFT_DIRTY
83 : #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_SOFT_DIRTY)
84 : #else
85 : #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 0))
86 : #endif
87 :
88 : /*
89 : * Tracking soft dirty bit when a page goes to a swap is tricky.
90 : * We need a bit which can be stored in pte _and_ not conflict
91 : * with swap entry format. On x86 bits 1-4 are *not* involved
92 : * into swap entry computation, but bit 7 is used for thp migration,
93 : * so we borrow bit 1 for soft dirty tracking.
94 : *
95 : * Please note that this bit must be treated as swap dirty page
96 : * mark if and only if the PTE/PMD has present bit clear!
97 : */
98 : #ifdef CONFIG_MEM_SOFT_DIRTY
99 : #define _PAGE_SWP_SOFT_DIRTY _PAGE_RW
100 : #else
101 : #define _PAGE_SWP_SOFT_DIRTY (_AT(pteval_t, 0))
102 : #endif
103 :
104 : #ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP
105 : #define _PAGE_UFFD_WP (_AT(pteval_t, 1) << _PAGE_BIT_UFFD_WP)
106 : #define _PAGE_SWP_UFFD_WP _PAGE_USER
107 : #else
108 : #define _PAGE_UFFD_WP (_AT(pteval_t, 0))
109 : #define _PAGE_SWP_UFFD_WP (_AT(pteval_t, 0))
110 : #endif
111 :
112 : #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
113 : #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
114 : #define _PAGE_DEVMAP (_AT(u64, 1) << _PAGE_BIT_DEVMAP)
115 : #else
116 : #define _PAGE_NX (_AT(pteval_t, 0))
117 : #define _PAGE_DEVMAP (_AT(pteval_t, 0))
118 : #endif
119 :
120 : #define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
121 :
122 : /*
123 : * Set of bits not changed in pte_modify. The pte's
124 : * protection key is treated like _PAGE_RW, for
125 : * instance, and is *not* included in this mask since
126 : * pte_modify() does modify it.
127 : */
128 : #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
129 : _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \
130 : _PAGE_SOFT_DIRTY | _PAGE_DEVMAP | _PAGE_ENC | \
131 : _PAGE_UFFD_WP)
132 : #define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE)
133 :
134 : /*
135 : * The cache modes defined here are used to translate between pure SW usage
136 : * and the HW defined cache mode bits and/or PAT entries.
137 : *
138 : * The resulting bits for PWT, PCD and PAT should be chosen in a way
139 : * to have the WB mode at index 0 (all bits clear). This is the default
140 : * right now and likely would break too much if changed.
141 : */
142 : #ifndef __ASSEMBLY__
143 : enum page_cache_mode {
144 : _PAGE_CACHE_MODE_WB = 0,
145 : _PAGE_CACHE_MODE_WC = 1,
146 : _PAGE_CACHE_MODE_UC_MINUS = 2,
147 : _PAGE_CACHE_MODE_UC = 3,
148 : _PAGE_CACHE_MODE_WT = 4,
149 : _PAGE_CACHE_MODE_WP = 5,
150 :
151 : _PAGE_CACHE_MODE_NUM = 8
152 : };
153 : #endif
154 :
155 : #define _PAGE_ENC (_AT(pteval_t, sme_me_mask))
156 :
157 : #define _PAGE_CACHE_MASK (_PAGE_PWT | _PAGE_PCD | _PAGE_PAT)
158 : #define _PAGE_LARGE_CACHE_MASK (_PAGE_PWT | _PAGE_PCD | _PAGE_PAT_LARGE)
159 :
160 : #define _PAGE_NOCACHE (cachemode2protval(_PAGE_CACHE_MODE_UC))
161 : #define _PAGE_CACHE_WP (cachemode2protval(_PAGE_CACHE_MODE_WP))
162 :
163 : #define __PP _PAGE_PRESENT
164 : #define __RW _PAGE_RW
165 : #define _USR _PAGE_USER
166 : #define ___A _PAGE_ACCESSED
167 : #define ___D _PAGE_DIRTY
168 : #define ___G _PAGE_GLOBAL
169 : #define __NX _PAGE_NX
170 :
171 : #define _ENC _PAGE_ENC
172 : #define __WP _PAGE_CACHE_WP
173 : #define __NC _PAGE_NOCACHE
174 : #define _PSE _PAGE_PSE
175 :
176 : #define pgprot_val(x) ((x).pgprot)
177 : #define __pgprot(x) ((pgprot_t) { (x) } )
178 : #define __pg(x) __pgprot(x)
179 :
180 : #define PAGE_NONE __pg( 0| 0| 0|___A| 0| 0| 0|___G)
181 : #define PAGE_SHARED __pg(__PP|__RW|_USR|___A|__NX| 0| 0| 0)
182 : #define PAGE_SHARED_EXEC __pg(__PP|__RW|_USR|___A| 0| 0| 0| 0)
183 : #define PAGE_COPY_NOEXEC __pg(__PP| 0|_USR|___A|__NX| 0| 0| 0)
184 : #define PAGE_COPY_EXEC __pg(__PP| 0|_USR|___A| 0| 0| 0| 0)
185 : #define PAGE_COPY __pg(__PP| 0|_USR|___A|__NX| 0| 0| 0)
186 : #define PAGE_READONLY __pg(__PP| 0|_USR|___A|__NX| 0| 0| 0)
187 : #define PAGE_READONLY_EXEC __pg(__PP| 0|_USR|___A| 0| 0| 0| 0)
188 :
189 : #define __PAGE_KERNEL (__PP|__RW| 0|___A|__NX|___D| 0|___G)
190 : #define __PAGE_KERNEL_EXEC (__PP|__RW| 0|___A| 0|___D| 0|___G)
191 : #define _KERNPG_TABLE_NOENC (__PP|__RW| 0|___A| 0|___D| 0| 0)
192 : #define _KERNPG_TABLE (__PP|__RW| 0|___A| 0|___D| 0| 0| _ENC)
193 : #define _PAGE_TABLE_NOENC (__PP|__RW|_USR|___A| 0|___D| 0| 0)
194 : #define _PAGE_TABLE (__PP|__RW|_USR|___A| 0|___D| 0| 0| _ENC)
195 : #define __PAGE_KERNEL_RO (__PP| 0| 0|___A|__NX|___D| 0|___G)
196 : #define __PAGE_KERNEL_ROX (__PP| 0| 0|___A| 0|___D| 0|___G)
197 : #define __PAGE_KERNEL_NOCACHE (__PP|__RW| 0|___A|__NX|___D| 0|___G| __NC)
198 : #define __PAGE_KERNEL_VVAR (__PP| 0|_USR|___A|__NX|___D| 0|___G)
199 : #define __PAGE_KERNEL_LARGE (__PP|__RW| 0|___A|__NX|___D|_PSE|___G)
200 : #define __PAGE_KERNEL_LARGE_EXEC (__PP|__RW| 0|___A| 0|___D|_PSE|___G)
201 : #define __PAGE_KERNEL_WP (__PP|__RW| 0|___A|__NX|___D| 0|___G| __WP)
202 :
203 :
204 : #define __PAGE_KERNEL_IO __PAGE_KERNEL
205 : #define __PAGE_KERNEL_IO_NOCACHE __PAGE_KERNEL_NOCACHE
206 :
207 :
208 : #ifndef __ASSEMBLY__
209 :
210 : #define __PAGE_KERNEL_ENC (__PAGE_KERNEL | _ENC)
211 : #define __PAGE_KERNEL_ENC_WP (__PAGE_KERNEL_WP | _ENC)
212 : #define __PAGE_KERNEL_NOENC (__PAGE_KERNEL | 0)
213 : #define __PAGE_KERNEL_NOENC_WP (__PAGE_KERNEL_WP | 0)
214 :
215 : #define __pgprot_mask(x) __pgprot((x) & __default_kernel_pte_mask)
216 :
217 : #define PAGE_KERNEL __pgprot_mask(__PAGE_KERNEL | _ENC)
218 : #define PAGE_KERNEL_NOENC __pgprot_mask(__PAGE_KERNEL | 0)
219 : #define PAGE_KERNEL_RO __pgprot_mask(__PAGE_KERNEL_RO | _ENC)
220 : #define PAGE_KERNEL_EXEC __pgprot_mask(__PAGE_KERNEL_EXEC | _ENC)
221 : #define PAGE_KERNEL_EXEC_NOENC __pgprot_mask(__PAGE_KERNEL_EXEC | 0)
222 : #define PAGE_KERNEL_ROX __pgprot_mask(__PAGE_KERNEL_ROX | _ENC)
223 : #define PAGE_KERNEL_NOCACHE __pgprot_mask(__PAGE_KERNEL_NOCACHE | _ENC)
224 : #define PAGE_KERNEL_LARGE __pgprot_mask(__PAGE_KERNEL_LARGE | _ENC)
225 : #define PAGE_KERNEL_LARGE_EXEC __pgprot_mask(__PAGE_KERNEL_LARGE_EXEC | _ENC)
226 : #define PAGE_KERNEL_VVAR __pgprot_mask(__PAGE_KERNEL_VVAR | _ENC)
227 :
228 : #define PAGE_KERNEL_IO __pgprot_mask(__PAGE_KERNEL_IO)
229 : #define PAGE_KERNEL_IO_NOCACHE __pgprot_mask(__PAGE_KERNEL_IO_NOCACHE)
230 :
231 : #endif /* __ASSEMBLY__ */
232 :
233 : /* xwr */
234 : #define __P000 PAGE_NONE
235 : #define __P001 PAGE_READONLY
236 : #define __P010 PAGE_COPY
237 : #define __P011 PAGE_COPY
238 : #define __P100 PAGE_READONLY_EXEC
239 : #define __P101 PAGE_READONLY_EXEC
240 : #define __P110 PAGE_COPY_EXEC
241 : #define __P111 PAGE_COPY_EXEC
242 :
243 : #define __S000 PAGE_NONE
244 : #define __S001 PAGE_READONLY
245 : #define __S010 PAGE_SHARED
246 : #define __S011 PAGE_SHARED
247 : #define __S100 PAGE_READONLY_EXEC
248 : #define __S101 PAGE_READONLY_EXEC
249 : #define __S110 PAGE_SHARED_EXEC
250 : #define __S111 PAGE_SHARED_EXEC
251 :
252 : /*
253 : * early identity mapping pte attrib macros.
254 : */
255 : #ifdef CONFIG_X86_64
256 : #define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
257 : #else
258 : #define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
259 : #define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */
260 : #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
261 : #endif
262 :
263 : #ifdef CONFIG_X86_32
264 : # include <asm/pgtable_32_types.h>
265 : #else
266 : # include <asm/pgtable_64_types.h>
267 : #endif
268 :
269 : #ifndef __ASSEMBLY__
270 :
271 : #include <linux/types.h>
272 :
273 : /* Extracts the PFN from a (pte|pmd|pud|pgd)val_t of a 4KB page */
274 : #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
275 :
276 : /*
277 : * Extracts the flags from a (pte|pmd|pud|pgd)val_t
278 : * This includes the protection key value.
279 : */
280 : #define PTE_FLAGS_MASK (~PTE_PFN_MASK)
281 :
282 : typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
283 :
284 : typedef struct { pgdval_t pgd; } pgd_t;
285 :
286 0 : static inline pgprot_t pgprot_nx(pgprot_t prot)
287 : {
288 0 : return __pgprot(pgprot_val(prot) | _PAGE_NX);
289 : }
290 : #define pgprot_nx pgprot_nx
291 :
292 : #ifdef CONFIG_X86_PAE
293 :
294 : /*
295 : * PHYSICAL_PAGE_MASK might be non-constant when SME is compiled in, so we can't
296 : * use it here.
297 : */
298 :
299 : #define PGD_PAE_PAGE_MASK ((signed long)PAGE_MASK)
300 : #define PGD_PAE_PHYS_MASK (((1ULL << __PHYSICAL_MASK_SHIFT)-1) & PGD_PAE_PAGE_MASK)
301 :
302 : /*
303 : * PAE allows Base Address, P, PWT, PCD and AVL bits to be set in PGD entries.
304 : * All other bits are Reserved MBZ
305 : */
306 : #define PGD_ALLOWED_BITS (PGD_PAE_PHYS_MASK | _PAGE_PRESENT | \
307 : _PAGE_PWT | _PAGE_PCD | \
308 : _PAGE_SOFTW1 | _PAGE_SOFTW2 | _PAGE_SOFTW3)
309 :
310 : #else
311 : /* No need to mask any bits for !PAE */
312 : #define PGD_ALLOWED_BITS (~0ULL)
313 : #endif
314 :
315 14258 : static inline pgd_t native_make_pgd(pgdval_t val)
316 : {
317 7214 : return (pgd_t) { val & PGD_ALLOWED_BITS };
318 : }
319 :
320 1029297 : static inline pgdval_t native_pgd_val(pgd_t pgd)
321 : {
322 1028770 : return pgd.pgd & PGD_ALLOWED_BITS;
323 : }
324 :
325 0 : static inline pgdval_t pgd_flags(pgd_t pgd)
326 : {
327 0 : return native_pgd_val(pgd) & PTE_FLAGS_MASK;
328 : }
329 :
330 : #if CONFIG_PGTABLE_LEVELS > 4
331 : typedef struct { p4dval_t p4d; } p4d_t;
332 :
333 : static inline p4d_t native_make_p4d(pudval_t val)
334 : {
335 : return (p4d_t) { val };
336 : }
337 :
338 : static inline p4dval_t native_p4d_val(p4d_t p4d)
339 : {
340 : return p4d.p4d;
341 : }
342 : #else
343 : #include <asm-generic/pgtable-nop4d.h>
344 :
345 7043 : static inline p4d_t native_make_p4d(pudval_t val)
346 : {
347 7043 : return (p4d_t) { .pgd = native_make_pgd((pgdval_t)val) };
348 : }
349 :
350 614615 : static inline p4dval_t native_p4d_val(p4d_t p4d)
351 : {
352 411727 : return native_pgd_val(p4d.pgd);
353 : }
354 : #endif
355 :
356 : #if CONFIG_PGTABLE_LEVELS > 3
357 : typedef struct { pudval_t pud; } pud_t;
358 :
359 21960 : static inline pud_t native_make_pud(pmdval_t val)
360 : {
361 21959 : return (pud_t) { val };
362 : }
363 :
364 2566936 : static inline pudval_t native_pud_val(pud_t pud)
365 : {
366 1100416 : return pud.pud;
367 : }
368 : #else
369 : #include <asm-generic/pgtable-nopud.h>
370 :
371 : static inline pud_t native_make_pud(pudval_t val)
372 : {
373 : return (pud_t) { .p4d.pgd = native_make_pgd(val) };
374 : }
375 :
376 : static inline pudval_t native_pud_val(pud_t pud)
377 : {
378 : return native_pgd_val(pud.p4d.pgd);
379 : }
380 : #endif
381 :
382 : #if CONFIG_PGTABLE_LEVELS > 2
383 : typedef struct { pmdval_t pmd; } pmd_t;
384 :
385 33750 : static inline pmd_t native_make_pmd(pmdval_t val)
386 : {
387 19673 : return (pmd_t) { val };
388 : }
389 :
390 4815662 : static inline pmdval_t native_pmd_val(pmd_t pmd)
391 : {
392 2163106 : return pmd.pmd;
393 : }
394 : #else
395 : #include <asm-generic/pgtable-nopmd.h>
396 :
397 : static inline pmd_t native_make_pmd(pmdval_t val)
398 : {
399 : return (pmd_t) { .pud.p4d.pgd = native_make_pgd(val) };
400 : }
401 :
402 : static inline pmdval_t native_pmd_val(pmd_t pmd)
403 : {
404 : return native_pgd_val(pmd.pud.p4d.pgd);
405 : }
406 : #endif
407 :
408 617750 : static inline p4dval_t p4d_pfn_mask(p4d_t p4d)
409 : {
410 : /* No 512 GiB huge pages yet */
411 414481 : return PTE_PFN_MASK;
412 : }
413 :
414 203073 : static inline p4dval_t p4d_flags_mask(p4d_t p4d)
415 : {
416 203073 : return ~p4d_pfn_mask(p4d);
417 : }
418 :
419 203073 : static inline p4dval_t p4d_flags(p4d_t p4d)
420 : {
421 203073 : return native_p4d_val(p4d) & p4d_flags_mask(p4d);
422 : }
423 :
424 796206 : static inline pudval_t pud_pfn_mask(pud_t pud)
425 : {
426 417031 : if (native_pud_val(pud) & _PAGE_PSE)
427 : return PHYSICAL_PUD_PAGE_MASK;
428 : else
429 789543 : return PTE_PFN_MASK;
430 : }
431 :
432 379175 : static inline pudval_t pud_flags_mask(pud_t pud)
433 : {
434 758223 : return ~pud_pfn_mask(pud);
435 : }
436 :
437 379175 : static inline pudval_t pud_flags(pud_t pud)
438 : {
439 758224 : return native_pud_val(pud) & pud_flags_mask(pud);
440 : }
441 :
442 1970677 : static inline pmdval_t pmd_pfn_mask(pmd_t pmd)
443 : {
444 819891 : if (native_pmd_val(pmd) & _PAGE_PSE)
445 : return PHYSICAL_PMD_PAGE_MASK;
446 : else
447 1613018 : return PTE_PFN_MASK;
448 : }
449 :
450 1150814 : static inline pmdval_t pmd_flags_mask(pmd_t pmd)
451 : {
452 1952717 : return ~pmd_pfn_mask(pmd);
453 : }
454 :
455 1150814 : static inline pmdval_t pmd_flags(pmd_t pmd)
456 : {
457 1603373 : return native_pmd_val(pmd) & pmd_flags_mask(pmd);
458 : }
459 :
460 2142900 : static inline pte_t native_make_pte(pteval_t val)
461 : {
462 1174488 : return (pte_t) { .pte = val };
463 : }
464 :
465 5493202 : static inline pteval_t native_pte_val(pte_t pte)
466 : {
467 1329074 : return pte.pte;
468 : }
469 :
470 4138132 : static inline pteval_t pte_flags(pte_t pte)
471 : {
472 3388508 : return native_pte_val(pte) & PTE_FLAGS_MASK;
473 : }
474 :
475 : #define __pte2cm_idx(cb) \
476 : ((((cb) >> (_PAGE_BIT_PAT - 2)) & 4) | \
477 : (((cb) >> (_PAGE_BIT_PCD - 1)) & 2) | \
478 : (((cb) >> _PAGE_BIT_PWT) & 1))
479 : #define __cm_idx2pte(i) \
480 : ((((i) & 4) << (_PAGE_BIT_PAT - 2)) | \
481 : (((i) & 2) << (_PAGE_BIT_PCD - 1)) | \
482 : (((i) & 1) << _PAGE_BIT_PWT))
483 :
484 : unsigned long cachemode2protval(enum page_cache_mode pcm);
485 :
486 221 : static inline pgprotval_t protval_4k_2_large(pgprotval_t val)
487 : {
488 221 : return (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
489 221 : ((val & _PAGE_PAT) << (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));
490 : }
491 153 : static inline pgprot_t pgprot_4k_2_large(pgprot_t pgprot)
492 : {
493 153 : return __pgprot(protval_4k_2_large(pgprot_val(pgprot)));
494 : }
495 167 : static inline pgprotval_t protval_large_2_4k(pgprotval_t val)
496 : {
497 167 : return (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
498 167 : ((val & _PAGE_PAT_LARGE) >>
499 : (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));
500 : }
501 167 : static inline pgprot_t pgprot_large_2_4k(pgprot_t pgprot)
502 : {
503 167 : return __pgprot(protval_large_2_4k(pgprot_val(pgprot)));
504 : }
505 :
506 :
507 : typedef struct page *pgtable_t;
508 :
509 : extern pteval_t __supported_pte_mask;
510 : extern pteval_t __default_kernel_pte_mask;
511 : extern void set_nx(void);
512 : extern int nx_enabled;
513 :
514 : #define pgprot_writecombine pgprot_writecombine
515 : extern pgprot_t pgprot_writecombine(pgprot_t prot);
516 :
517 : #define pgprot_writethrough pgprot_writethrough
518 : extern pgprot_t pgprot_writethrough(pgprot_t prot);
519 :
520 : /* Indicate that x86 has its own track and untrack pfn vma functions */
521 : #define __HAVE_PFNMAP_TRACKING
522 :
523 : #define __HAVE_PHYS_MEM_ACCESS_PROT
524 : struct file;
525 : pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
526 : unsigned long size, pgprot_t vma_prot);
527 :
528 : /* Install a pte for a particular vaddr in kernel space. */
529 : void set_pte_vaddr(unsigned long vaddr, pte_t pte);
530 :
531 : #ifdef CONFIG_X86_32
532 : extern void native_pagetable_init(void);
533 : #else
534 : #define native_pagetable_init paging_init
535 : #endif
536 :
537 : struct seq_file;
538 : extern void arch_report_meminfo(struct seq_file *m);
539 :
540 : enum pg_level {
541 : PG_LEVEL_NONE,
542 : PG_LEVEL_4K,
543 : PG_LEVEL_2M,
544 : PG_LEVEL_1G,
545 : PG_LEVEL_512G,
546 : PG_LEVEL_NUM
547 : };
548 :
549 : #ifdef CONFIG_PROC_FS
550 : extern void update_page_count(int level, unsigned long pages);
551 : #else
552 : static inline void update_page_count(int level, unsigned long pages) { }
553 : #endif
554 :
555 : /*
556 : * Helper function that returns the kernel pagetable entry controlling
557 : * the virtual address 'address'. NULL means no pagetable entry present.
558 : * NOTE: the return type is pte_t but if the pmd is PSE then we return it
559 : * as a pte too.
560 : */
561 : extern pte_t *lookup_address(unsigned long address, unsigned int *level);
562 : extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
563 : unsigned int *level);
564 :
565 : struct mm_struct;
566 : extern pte_t *lookup_address_in_mm(struct mm_struct *mm, unsigned long address,
567 : unsigned int *level);
568 : extern pmd_t *lookup_pmd_address(unsigned long address);
569 : extern phys_addr_t slow_virt_to_phys(void *__address);
570 : extern int __init kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn,
571 : unsigned long address,
572 : unsigned numpages,
573 : unsigned long page_flags);
574 : extern int __init kernel_unmap_pages_in_pgd(pgd_t *pgd, unsigned long address,
575 : unsigned long numpages);
576 : #endif /* !__ASSEMBLY__ */
577 :
578 : #endif /* _ASM_X86_PGTABLE_DEFS_H */
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