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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
8d19c99f JF |
2 | #ifndef _ASM_X86_PGTABLE_DEFS_H |
3 | #define _ASM_X86_PGTABLE_DEFS_H | |
4 | ||
5 | #include <linux/const.h> | |
21729f81 TL |
6 | #include <linux/mem_encrypt.h> |
7 | ||
e43623b4 | 8 | #include <asm/page_types.h> |
8d19c99f | 9 | |
d016bf7e | 10 | #define FIRST_USER_ADDRESS 0UL |
8d19c99f JF |
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+ */ | |
c46a7c81 MG |
22 | #define _PAGE_BIT_SOFTW1 9 /* available for programmer */ |
23 | #define _PAGE_BIT_SOFTW2 10 /* " */ | |
24 | #define _PAGE_BIT_SOFTW3 11 /* " */ | |
8d19c99f | 25 | #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ |
5c1d90f5 DH |
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 | ||
c46a7c81 MG |
33 | #define _PAGE_BIT_SPECIAL _PAGE_BIT_SOFTW1 |
34 | #define _PAGE_BIT_CPA_TEST _PAGE_BIT_SOFTW1 | |
c46a7c81 MG |
35 | #define _PAGE_BIT_HIDDEN _PAGE_BIT_SOFTW3 /* hidden by kmemcheck */ |
36 | #define _PAGE_BIT_SOFT_DIRTY _PAGE_BIT_SOFTW3 /* software dirty tracking */ | |
5c1d90f5 | 37 | #define _PAGE_BIT_DEVMAP _PAGE_BIT_SOFTW4 |
8d19c99f JF |
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 | |
8d19c99f JF |
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) | |
c46a7c81 | 52 | #define _PAGE_SOFTW1 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW1) |
f955371c | 53 | #define _PAGE_SOFTW2 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW2) |
8d19c99f JF |
54 | #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) |
55 | #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) | |
56 | #define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL) | |
57 | #define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST) | |
5c1d90f5 DH |
58 | #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS |
59 | #define _PAGE_PKEY_BIT0 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT0) | |
60 | #define _PAGE_PKEY_BIT1 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT1) | |
61 | #define _PAGE_PKEY_BIT2 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT2) | |
62 | #define _PAGE_PKEY_BIT3 (_AT(pteval_t, 1) << _PAGE_BIT_PKEY_BIT3) | |
63 | #else | |
64 | #define _PAGE_PKEY_BIT0 (_AT(pteval_t, 0)) | |
65 | #define _PAGE_PKEY_BIT1 (_AT(pteval_t, 0)) | |
66 | #define _PAGE_PKEY_BIT2 (_AT(pteval_t, 0)) | |
67 | #define _PAGE_PKEY_BIT3 (_AT(pteval_t, 0)) | |
68 | #endif | |
8d19c99f JF |
69 | #define __HAVE_ARCH_PTE_SPECIAL |
70 | ||
019132ff DH |
71 | #define _PAGE_PKEY_MASK (_PAGE_PKEY_BIT0 | \ |
72 | _PAGE_PKEY_BIT1 | \ | |
73 | _PAGE_PKEY_BIT2 | \ | |
74 | _PAGE_PKEY_BIT3) | |
75 | ||
97e3c602 DH |
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 | ||
9d31c506 JF |
82 | #ifdef CONFIG_KMEMCHECK |
83 | #define _PAGE_HIDDEN (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) | |
84 | #else | |
85 | #define _PAGE_HIDDEN (_AT(pteval_t, 0)) | |
86 | #endif | |
87 | ||
0f8975ec PE |
88 | /* |
89 | * The same hidden bit is used by kmemcheck, but since kmemcheck | |
90 | * works on kernel pages while soft-dirty engine on user space, | |
91 | * they do not conflict with each other. | |
92 | */ | |
93 | ||
94 | #ifdef CONFIG_MEM_SOFT_DIRTY | |
41bb3476 | 95 | #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_SOFT_DIRTY) |
0f8975ec PE |
96 | #else |
97 | #define _PAGE_SOFT_DIRTY (_AT(pteval_t, 0)) | |
98 | #endif | |
99 | ||
179ef71c CG |
100 | /* |
101 | * Tracking soft dirty bit when a page goes to a swap is tricky. | |
102 | * We need a bit which can be stored in pte _and_ not conflict | |
eee4818b NH |
103 | * with swap entry format. On x86 bits 1-4 are *not* involved |
104 | * into swap entry computation, but bit 7 is used for thp migration, | |
105 | * so we borrow bit 1 for soft dirty tracking. | |
fa0f281c CG |
106 | * |
107 | * Please note that this bit must be treated as swap dirty page | |
eee4818b | 108 | * mark if and only if the PTE/PMD has present bit clear! |
179ef71c CG |
109 | */ |
110 | #ifdef CONFIG_MEM_SOFT_DIRTY | |
eee4818b | 111 | #define _PAGE_SWP_SOFT_DIRTY _PAGE_RW |
179ef71c CG |
112 | #else |
113 | #define _PAGE_SWP_SOFT_DIRTY (_AT(pteval_t, 0)) | |
114 | #endif | |
115 | ||
8d19c99f JF |
116 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) |
117 | #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) | |
69660fd7 DW |
118 | #define _PAGE_DEVMAP (_AT(u64, 1) << _PAGE_BIT_DEVMAP) |
119 | #define __HAVE_ARCH_PTE_DEVMAP | |
8d19c99f JF |
120 | #else |
121 | #define _PAGE_NX (_AT(pteval_t, 0)) | |
69660fd7 | 122 | #define _PAGE_DEVMAP (_AT(pteval_t, 0)) |
8d19c99f JF |
123 | #endif |
124 | ||
8d19c99f JF |
125 | #define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE) |
126 | ||
21729f81 TL |
127 | #define _PAGE_TABLE_NOENC (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |\ |
128 | _PAGE_ACCESSED | _PAGE_DIRTY) | |
129 | #define _KERNPG_TABLE_NOENC (_PAGE_PRESENT | _PAGE_RW | \ | |
130 | _PAGE_ACCESSED | _PAGE_DIRTY) | |
8d19c99f | 131 | |
8f62c883 DH |
132 | /* |
133 | * Set of bits not changed in pte_modify. The pte's | |
134 | * protection key is treated like _PAGE_RW, for | |
135 | * instance, and is *not* included in this mask since | |
136 | * pte_modify() does modify it. | |
137 | */ | |
8d19c99f | 138 | #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ |
24f91eba | 139 | _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \ |
21d9ee3e MG |
140 | _PAGE_SOFT_DIRTY) |
141 | #define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE) | |
8d19c99f | 142 | |
281d4078 JG |
143 | /* |
144 | * The cache modes defined here are used to translate between pure SW usage | |
145 | * and the HW defined cache mode bits and/or PAT entries. | |
146 | * | |
147 | * The resulting bits for PWT, PCD and PAT should be chosen in a way | |
148 | * to have the WB mode at index 0 (all bits clear). This is the default | |
149 | * right now and likely would break too much if changed. | |
150 | */ | |
151 | #ifndef __ASSEMBLY__ | |
152 | enum page_cache_mode { | |
153 | _PAGE_CACHE_MODE_WB = 0, | |
154 | _PAGE_CACHE_MODE_WC = 1, | |
155 | _PAGE_CACHE_MODE_UC_MINUS = 2, | |
156 | _PAGE_CACHE_MODE_UC = 3, | |
157 | _PAGE_CACHE_MODE_WT = 4, | |
158 | _PAGE_CACHE_MODE_WP = 5, | |
159 | _PAGE_CACHE_MODE_NUM = 8 | |
160 | }; | |
161 | #endif | |
162 | ||
163 | #define _PAGE_CACHE_MASK (_PAGE_PAT | _PAGE_PCD | _PAGE_PWT) | |
164 | #define _PAGE_NOCACHE (cachemode2protval(_PAGE_CACHE_MODE_UC)) | |
f88a68fa | 165 | #define _PAGE_CACHE_WP (cachemode2protval(_PAGE_CACHE_MODE_WP)) |
281d4078 | 166 | |
8d19c99f JF |
167 | #define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) |
168 | #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \ | |
169 | _PAGE_ACCESSED | _PAGE_NX) | |
170 | ||
171 | #define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \ | |
172 | _PAGE_USER | _PAGE_ACCESSED) | |
173 | #define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
174 | _PAGE_ACCESSED | _PAGE_NX) | |
175 | #define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
176 | _PAGE_ACCESSED) | |
177 | #define PAGE_COPY PAGE_COPY_NOEXEC | |
178 | #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
179 | _PAGE_ACCESSED | _PAGE_NX) | |
180 | #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ | |
181 | _PAGE_ACCESSED) | |
182 | ||
183 | #define __PAGE_KERNEL_EXEC \ | |
184 | (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) | |
185 | #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) | |
186 | ||
187 | #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) | |
188 | #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) | |
87ad0b71 | 189 | #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_NOCACHE) |
8d19c99f | 190 | #define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) |
9fd67b4e | 191 | #define __PAGE_KERNEL_VVAR (__PAGE_KERNEL_RO | _PAGE_USER) |
8d19c99f | 192 | #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) |
8d19c99f | 193 | #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) |
f88a68fa | 194 | #define __PAGE_KERNEL_WP (__PAGE_KERNEL | _PAGE_CACHE_WP) |
8d19c99f | 195 | |
f955371c DV |
196 | #define __PAGE_KERNEL_IO (__PAGE_KERNEL) |
197 | #define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE) | |
8d19c99f | 198 | |
21729f81 TL |
199 | #ifndef __ASSEMBLY__ |
200 | ||
201 | #define _PAGE_ENC (_AT(pteval_t, sme_me_mask)) | |
202 | ||
203 | #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \ | |
204 | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_ENC) | |
205 | #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \ | |
206 | _PAGE_DIRTY | _PAGE_ENC) | |
207 | ||
f88a68fa TL |
208 | #define __PAGE_KERNEL_ENC (__PAGE_KERNEL | _PAGE_ENC) |
209 | #define __PAGE_KERNEL_ENC_WP (__PAGE_KERNEL_WP | _PAGE_ENC) | |
210 | ||
211 | #define __PAGE_KERNEL_NOENC (__PAGE_KERNEL) | |
212 | #define __PAGE_KERNEL_NOENC_WP (__PAGE_KERNEL_WP) | |
213 | ||
21729f81 | 214 | #define PAGE_KERNEL __pgprot(__PAGE_KERNEL | _PAGE_ENC) |
57bd1905 | 215 | #define PAGE_KERNEL_NOENC __pgprot(__PAGE_KERNEL) |
21729f81 TL |
216 | #define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO | _PAGE_ENC) |
217 | #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC | _PAGE_ENC) | |
bba4ed01 | 218 | #define PAGE_KERNEL_EXEC_NOENC __pgprot(__PAGE_KERNEL_EXEC) |
21729f81 TL |
219 | #define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX | _PAGE_ENC) |
220 | #define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE | _PAGE_ENC) | |
221 | #define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE | _PAGE_ENC) | |
222 | #define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC | _PAGE_ENC) | |
223 | #define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL | _PAGE_ENC) | |
224 | #define PAGE_KERNEL_VVAR __pgprot(__PAGE_KERNEL_VVAR | _PAGE_ENC) | |
225 | ||
226 | #define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO) | |
227 | #define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE) | |
228 | ||
229 | #endif /* __ASSEMBLY__ */ | |
8d19c99f JF |
230 | |
231 | /* xwr */ | |
232 | #define __P000 PAGE_NONE | |
233 | #define __P001 PAGE_READONLY | |
234 | #define __P010 PAGE_COPY | |
235 | #define __P011 PAGE_COPY | |
236 | #define __P100 PAGE_READONLY_EXEC | |
237 | #define __P101 PAGE_READONLY_EXEC | |
238 | #define __P110 PAGE_COPY_EXEC | |
239 | #define __P111 PAGE_COPY_EXEC | |
240 | ||
241 | #define __S000 PAGE_NONE | |
242 | #define __S001 PAGE_READONLY | |
243 | #define __S010 PAGE_SHARED | |
244 | #define __S011 PAGE_SHARED | |
245 | #define __S100 PAGE_READONLY_EXEC | |
246 | #define __S101 PAGE_READONLY_EXEC | |
247 | #define __S110 PAGE_SHARED_EXEC | |
248 | #define __S111 PAGE_SHARED_EXEC | |
249 | ||
250 | /* | |
251 | * early identity mapping pte attrib macros. | |
252 | */ | |
253 | #ifdef CONFIG_X86_64 | |
254 | #define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC | |
255 | #else | |
8d19c99f | 256 | #define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ |
7dda0387 | 257 | #define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ |
8d19c99f JF |
258 | #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ |
259 | #endif | |
260 | ||
54321d94 | 261 | #ifdef CONFIG_X86_32 |
a1ce3928 | 262 | # include <asm/pgtable_32_types.h> |
54321d94 | 263 | #else |
a1ce3928 | 264 | # include <asm/pgtable_64_types.h> |
54321d94 JF |
265 | #endif |
266 | ||
8d19c99f JF |
267 | #ifndef __ASSEMBLY__ |
268 | ||
54321d94 JF |
269 | #include <linux/types.h> |
270 | ||
4be4c1fb | 271 | /* Extracts the PFN from a (pte|pmd|pud|pgd)val_t of a 4KB page */ |
9b3651cb JF |
272 | #define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) |
273 | ||
8f62c883 DH |
274 | /* |
275 | * Extracts the flags from a (pte|pmd|pud|pgd)val_t | |
276 | * This includes the protection key value. | |
277 | */ | |
9b3651cb JF |
278 | #define PTE_FLAGS_MASK (~PTE_PFN_MASK) |
279 | ||
54321d94 JF |
280 | typedef struct pgprot { pgprotval_t pgprot; } pgprot_t; |
281 | ||
282 | typedef struct { pgdval_t pgd; } pgd_t; | |
283 | ||
284 | static inline pgd_t native_make_pgd(pgdval_t val) | |
285 | { | |
286 | return (pgd_t) { val }; | |
287 | } | |
288 | ||
289 | static inline pgdval_t native_pgd_val(pgd_t pgd) | |
290 | { | |
291 | return pgd.pgd; | |
292 | } | |
293 | ||
294 | static inline pgdval_t pgd_flags(pgd_t pgd) | |
295 | { | |
296 | return native_pgd_val(pgd) & PTE_FLAGS_MASK; | |
297 | } | |
298 | ||
fe1e8c3e | 299 | #if CONFIG_PGTABLE_LEVELS > 4 |
b8504058 | 300 | typedef struct { p4dval_t p4d; } p4d_t; |
fe1e8c3e | 301 | |
b8504058 KS |
302 | static inline p4d_t native_make_p4d(pudval_t val) |
303 | { | |
304 | return (p4d_t) { val }; | |
305 | } | |
fe1e8c3e | 306 | |
b8504058 KS |
307 | static inline p4dval_t native_p4d_val(p4d_t p4d) |
308 | { | |
309 | return p4d.p4d; | |
310 | } | |
fe1e8c3e | 311 | #else |
f2a6a705 | 312 | #include <asm-generic/pgtable-nop4d.h> |
9849a569 | 313 | |
db516997 TL |
314 | static inline p4d_t native_make_p4d(pudval_t val) |
315 | { | |
316 | return (p4d_t) { .pgd = native_make_pgd((pgdval_t)val) }; | |
317 | } | |
318 | ||
fe1e8c3e KS |
319 | static inline p4dval_t native_p4d_val(p4d_t p4d) |
320 | { | |
f2a6a705 | 321 | return native_pgd_val(p4d.pgd); |
fe1e8c3e KS |
322 | } |
323 | #endif | |
324 | ||
325 | #if CONFIG_PGTABLE_LEVELS > 3 | |
54321d94 JF |
326 | typedef struct { pudval_t pud; } pud_t; |
327 | ||
328 | static inline pud_t native_make_pud(pmdval_t val) | |
329 | { | |
330 | return (pud_t) { val }; | |
331 | } | |
332 | ||
333 | static inline pudval_t native_pud_val(pud_t pud) | |
334 | { | |
335 | return pud.pud; | |
336 | } | |
337 | #else | |
338 | #include <asm-generic/pgtable-nopud.h> | |
339 | ||
340 | static inline pudval_t native_pud_val(pud_t pud) | |
341 | { | |
f2a6a705 | 342 | return native_pgd_val(pud.p4d.pgd); |
54321d94 JF |
343 | } |
344 | #endif | |
345 | ||
98233368 | 346 | #if CONFIG_PGTABLE_LEVELS > 2 |
54321d94 JF |
347 | typedef struct { pmdval_t pmd; } pmd_t; |
348 | ||
349 | static inline pmd_t native_make_pmd(pmdval_t val) | |
350 | { | |
351 | return (pmd_t) { val }; | |
352 | } | |
353 | ||
354 | static inline pmdval_t native_pmd_val(pmd_t pmd) | |
355 | { | |
356 | return pmd.pmd; | |
357 | } | |
358 | #else | |
359 | #include <asm-generic/pgtable-nopmd.h> | |
360 | ||
361 | static inline pmdval_t native_pmd_val(pmd_t pmd) | |
362 | { | |
f2a6a705 | 363 | return native_pgd_val(pmd.pud.p4d.pgd); |
54321d94 JF |
364 | } |
365 | #endif | |
366 | ||
fe1e8c3e KS |
367 | static inline p4dval_t p4d_pfn_mask(p4d_t p4d) |
368 | { | |
369 | /* No 512 GiB huge pages yet */ | |
370 | return PTE_PFN_MASK; | |
371 | } | |
372 | ||
373 | static inline p4dval_t p4d_flags_mask(p4d_t p4d) | |
374 | { | |
375 | return ~p4d_pfn_mask(p4d); | |
376 | } | |
377 | ||
378 | static inline p4dval_t p4d_flags(p4d_t p4d) | |
379 | { | |
380 | return native_p4d_val(p4d) & p4d_flags_mask(p4d); | |
381 | } | |
382 | ||
4be4c1fb TK |
383 | static inline pudval_t pud_pfn_mask(pud_t pud) |
384 | { | |
385 | if (native_pud_val(pud) & _PAGE_PSE) | |
70f15287 | 386 | return PHYSICAL_PUD_PAGE_MASK; |
4be4c1fb TK |
387 | else |
388 | return PTE_PFN_MASK; | |
389 | } | |
390 | ||
391 | static inline pudval_t pud_flags_mask(pud_t pud) | |
392 | { | |
70f15287 | 393 | return ~pud_pfn_mask(pud); |
4be4c1fb TK |
394 | } |
395 | ||
54321d94 JF |
396 | static inline pudval_t pud_flags(pud_t pud) |
397 | { | |
f70abb0f | 398 | return native_pud_val(pud) & pud_flags_mask(pud); |
54321d94 JF |
399 | } |
400 | ||
4be4c1fb TK |
401 | static inline pmdval_t pmd_pfn_mask(pmd_t pmd) |
402 | { | |
403 | if (native_pmd_val(pmd) & _PAGE_PSE) | |
70f15287 | 404 | return PHYSICAL_PMD_PAGE_MASK; |
4be4c1fb TK |
405 | else |
406 | return PTE_PFN_MASK; | |
407 | } | |
408 | ||
409 | static inline pmdval_t pmd_flags_mask(pmd_t pmd) | |
410 | { | |
70f15287 | 411 | return ~pmd_pfn_mask(pmd); |
4be4c1fb TK |
412 | } |
413 | ||
54321d94 JF |
414 | static inline pmdval_t pmd_flags(pmd_t pmd) |
415 | { | |
f70abb0f | 416 | return native_pmd_val(pmd) & pmd_flags_mask(pmd); |
54321d94 JF |
417 | } |
418 | ||
419 | static inline pte_t native_make_pte(pteval_t val) | |
420 | { | |
421 | return (pte_t) { .pte = val }; | |
422 | } | |
423 | ||
424 | static inline pteval_t native_pte_val(pte_t pte) | |
425 | { | |
426 | return pte.pte; | |
427 | } | |
428 | ||
429 | static inline pteval_t pte_flags(pte_t pte) | |
430 | { | |
431 | return native_pte_val(pte) & PTE_FLAGS_MASK; | |
432 | } | |
433 | ||
434 | #define pgprot_val(x) ((x).pgprot) | |
435 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
436 | ||
281d4078 JG |
437 | extern uint16_t __cachemode2pte_tbl[_PAGE_CACHE_MODE_NUM]; |
438 | extern uint8_t __pte2cachemode_tbl[8]; | |
439 | ||
440 | #define __pte2cm_idx(cb) \ | |
441 | ((((cb) >> (_PAGE_BIT_PAT - 2)) & 4) | \ | |
442 | (((cb) >> (_PAGE_BIT_PCD - 1)) & 2) | \ | |
443 | (((cb) >> _PAGE_BIT_PWT) & 1)) | |
bd809af1 JG |
444 | #define __cm_idx2pte(i) \ |
445 | ((((i) & 4) << (_PAGE_BIT_PAT - 2)) | \ | |
446 | (((i) & 2) << (_PAGE_BIT_PCD - 1)) | \ | |
447 | (((i) & 1) << _PAGE_BIT_PWT)) | |
281d4078 JG |
448 | |
449 | static inline unsigned long cachemode2protval(enum page_cache_mode pcm) | |
450 | { | |
451 | if (likely(pcm == 0)) | |
452 | return 0; | |
453 | return __cachemode2pte_tbl[pcm]; | |
454 | } | |
455 | static inline pgprot_t cachemode2pgprot(enum page_cache_mode pcm) | |
456 | { | |
457 | return __pgprot(cachemode2protval(pcm)); | |
458 | } | |
459 | static inline enum page_cache_mode pgprot2cachemode(pgprot_t pgprot) | |
460 | { | |
461 | unsigned long masked; | |
462 | ||
463 | masked = pgprot_val(pgprot) & _PAGE_CACHE_MASK; | |
464 | if (likely(masked == 0)) | |
465 | return 0; | |
466 | return __pte2cachemode_tbl[__pte2cm_idx(masked)]; | |
467 | } | |
468 | static inline pgprot_t pgprot_4k_2_large(pgprot_t pgprot) | |
469 | { | |
3625c2c2 | 470 | pgprotval_t val = pgprot_val(pgprot); |
281d4078 | 471 | pgprot_t new; |
281d4078 | 472 | |
281d4078 JG |
473 | pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) | |
474 | ((val & _PAGE_PAT) << (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT)); | |
475 | return new; | |
476 | } | |
477 | static inline pgprot_t pgprot_large_2_4k(pgprot_t pgprot) | |
478 | { | |
3625c2c2 | 479 | pgprotval_t val = pgprot_val(pgprot); |
281d4078 | 480 | pgprot_t new; |
281d4078 | 481 | |
281d4078 JG |
482 | pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) | |
483 | ((val & _PAGE_PAT_LARGE) >> | |
484 | (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT)); | |
485 | return new; | |
486 | } | |
487 | ||
54321d94 JF |
488 | |
489 | typedef struct page *pgtable_t; | |
490 | ||
8d19c99f | 491 | extern pteval_t __supported_pte_mask; |
c44c9ec0 | 492 | extern void set_nx(void); |
54321d94 | 493 | extern int nx_enabled; |
8d19c99f JF |
494 | |
495 | #define pgprot_writecombine pgprot_writecombine | |
496 | extern pgprot_t pgprot_writecombine(pgprot_t prot); | |
497 | ||
d1b4bfbf TK |
498 | #define pgprot_writethrough pgprot_writethrough |
499 | extern pgprot_t pgprot_writethrough(pgprot_t prot); | |
500 | ||
8d19c99f JF |
501 | /* Indicate that x86 has its own track and untrack pfn vma functions */ |
502 | #define __HAVE_PFNMAP_TRACKING | |
503 | ||
504 | #define __HAVE_PHYS_MEM_ACCESS_PROT | |
505 | struct file; | |
506 | pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, | |
507 | unsigned long size, pgprot_t vma_prot); | |
8d19c99f JF |
508 | |
509 | /* Install a pte for a particular vaddr in kernel space. */ | |
510 | void set_pte_vaddr(unsigned long vaddr, pte_t pte); | |
511 | ||
512 | #ifdef CONFIG_X86_32 | |
7737b215 | 513 | extern void native_pagetable_init(void); |
8d19c99f | 514 | #else |
843b8ed2 | 515 | #define native_pagetable_init paging_init |
8d19c99f JF |
516 | #endif |
517 | ||
518 | struct seq_file; | |
519 | extern void arch_report_meminfo(struct seq_file *m); | |
520 | ||
4cbeb51b | 521 | enum pg_level { |
8d19c99f JF |
522 | PG_LEVEL_NONE, |
523 | PG_LEVEL_4K, | |
524 | PG_LEVEL_2M, | |
525 | PG_LEVEL_1G, | |
fe1e8c3e | 526 | PG_LEVEL_512G, |
8d19c99f JF |
527 | PG_LEVEL_NUM |
528 | }; | |
529 | ||
530 | #ifdef CONFIG_PROC_FS | |
531 | extern void update_page_count(int level, unsigned long pages); | |
532 | #else | |
533 | static inline void update_page_count(int level, unsigned long pages) { } | |
534 | #endif | |
535 | ||
536 | /* | |
537 | * Helper function that returns the kernel pagetable entry controlling | |
538 | * the virtual address 'address'. NULL means no pagetable entry present. | |
539 | * NOTE: the return type is pte_t but if the pmd is PSE then we return it | |
540 | * as a pte too. | |
541 | */ | |
542 | extern pte_t *lookup_address(unsigned long address, unsigned int *level); | |
426e34cc MF |
543 | extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address, |
544 | unsigned int *level); | |
792230c3 | 545 | extern pmd_t *lookup_pmd_address(unsigned long address); |
d7656534 | 546 | extern phys_addr_t slow_virt_to_phys(void *__address); |
d2f7cbe7 BP |
547 | extern int kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn, unsigned long address, |
548 | unsigned numpages, unsigned long page_flags); | |
8d19c99f JF |
549 | #endif /* !__ASSEMBLY__ */ |
550 | ||
551 | #endif /* _ASM_X86_PGTABLE_DEFS_H */ |