1 /*- 2 * SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU) 3 * 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * The Mach Operating System project at Carnegie-Mellon University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)vm_map.h 8.9 (Berkeley) 5/17/95 35 * 36 * 37 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 38 * All rights reserved. 39 * 40 * Authors: Avadis Tevanian, Jr., Michael Wayne Young 41 * 42 * Permission to use, copy, modify and distribute this software and 43 * its documentation is hereby granted, provided that both the copyright 44 * notice and this permission notice appear in all copies of the 45 * software, derivative works or modified versions, and any portions 46 * thereof, and that both notices appear in supporting documentation. 47 * 48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 49 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 51 * 52 * Carnegie Mellon requests users of this software to return to 53 * 54 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 55 * School of Computer Science 56 * Carnegie Mellon University 57 * Pittsburgh PA 15213-3890 58 * 59 * any improvements or extensions that they make and grant Carnegie the 60 * rights to redistribute these changes. 61 * 62 * $FreeBSD$ 63 */ 64 65 /* 66 * Virtual memory map module definitions. 67 */ 68 #ifndef _VM_MAP_ 69 #define _VM_MAP_ 70 71 #include <sys/lock.h> 72 #include <sys/sx.h> 73 #include <sys/_mutex.h> 74 75 /* 76 * Types defined: 77 * 78 * vm_map_t the high-level address map data structure. 79 * vm_map_entry_t an entry in an address map. 80 */ 81 82 typedef u_char vm_flags_t; 83 typedef u_int vm_eflags_t; 84 85 /* 86 * Objects which live in maps may be either VM objects, or 87 * another map (called a "sharing map") which denotes read-write 88 * sharing with other maps. 89 */ 90 union vm_map_object { 91 struct vm_object *vm_object; /* object object */ 92 struct vm_map *sub_map; /* belongs to another map */ 93 }; 94 95 /* 96 * Address map entries consist of start and end addresses, 97 * a VM object (or sharing map) and offset into that object, 98 * and user-exported inheritance and protection information. 99 * Also included is control information for virtual copy operations. 100 * 101 * For stack gap map entries (MAP_ENTRY_GUARD | MAP_ENTRY_GROWS_DOWN 102 * or UP), the next_read member is reused as the stack_guard_page 103 * storage, and offset is the stack protection. 104 */ 105 struct vm_map_entry { 106 struct vm_map_entry *left; /* left child or previous entry */ 107 struct vm_map_entry *right; /* right child or next entry */ 108 vm_offset_t start; /* start address */ 109 vm_offset_t end; /* end address */ 110 vm_offset_t next_read; /* vaddr of the next sequential read */ 111 vm_size_t max_free; /* max free space in subtree */ 112 union vm_map_object object; /* object I point to */ 113 vm_ooffset_t offset; /* offset into object */ 114 vm_eflags_t eflags; /* map entry flags */ 115 vm_prot_t protection; /* protection code */ 116 vm_prot_t max_protection; /* maximum protection */ 117 vm_inherit_t inheritance; /* inheritance */ 118 uint8_t read_ahead; /* pages in the read-ahead window */ 119 int wired_count; /* can be paged if = 0 */ 120 struct ucred *cred; /* tmp storage for creator ref */ 121 struct thread *wiring_thread; 122 }; 123 124 #define MAP_ENTRY_NOSYNC 0x00000001 125 #define MAP_ENTRY_IS_SUB_MAP 0x00000002 126 #define MAP_ENTRY_COW 0x00000004 127 #define MAP_ENTRY_NEEDS_COPY 0x00000008 128 #define MAP_ENTRY_NOFAULT 0x00000010 129 #define MAP_ENTRY_USER_WIRED 0x00000020 130 131 #define MAP_ENTRY_BEHAV_NORMAL 0x00000000 /* default behavior */ 132 #define MAP_ENTRY_BEHAV_SEQUENTIAL 0x00000040 /* expect sequential 133 access */ 134 #define MAP_ENTRY_BEHAV_RANDOM 0x00000080 /* expect random 135 access */ 136 #define MAP_ENTRY_BEHAV_RESERVED 0x000000c0 /* future use */ 137 #define MAP_ENTRY_BEHAV_MASK 0x000000c0 138 #define MAP_ENTRY_IN_TRANSITION 0x00000100 /* entry being 139 changed */ 140 #define MAP_ENTRY_NEEDS_WAKEUP 0x00000200 /* waiters in 141 transition */ 142 #define MAP_ENTRY_NOCOREDUMP 0x00000400 /* don't include in 143 a core */ 144 #define MAP_ENTRY_VN_EXEC 0x00000800 /* text vnode mapping */ 145 #define MAP_ENTRY_GROWS_DOWN 0x00001000 /* top-down stacks */ 146 #define MAP_ENTRY_GROWS_UP 0x00002000 /* bottom-up stacks */ 147 148 #define MAP_ENTRY_WIRE_SKIPPED 0x00004000 149 #define MAP_ENTRY_WRITECNT 0x00008000 /* tracked writeable 150 mapping */ 151 #define MAP_ENTRY_GUARD 0x00010000 152 #define MAP_ENTRY_STACK_GAP_DN 0x00020000 153 #define MAP_ENTRY_STACK_GAP_UP 0x00040000 154 #define MAP_ENTRY_HEADER 0x00080000 155 156 #define MAP_ENTRY_SPLIT_BOUNDARY_MASK 0x00300000 157 158 #define MAP_ENTRY_SPLIT_BOUNDARY_SHIFT 20 159 160 #ifdef _KERNEL 161 static __inline u_char 162 vm_map_entry_behavior(vm_map_entry_t entry) 163 { 164 return (entry->eflags & MAP_ENTRY_BEHAV_MASK); 165 } 166 167 static __inline int 168 vm_map_entry_user_wired_count(vm_map_entry_t entry) 169 { 170 if (entry->eflags & MAP_ENTRY_USER_WIRED) 171 return (1); 172 return (0); 173 } 174 175 static __inline int 176 vm_map_entry_system_wired_count(vm_map_entry_t entry) 177 { 178 return (entry->wired_count - vm_map_entry_user_wired_count(entry)); 179 } 180 #endif /* _KERNEL */ 181 182 /* 183 * A map is a set of map entries. These map entries are 184 * organized as a threaded binary search tree. Both structures 185 * are ordered based upon the start and end addresses contained 186 * within each map entry. The largest gap between an entry in a 187 * subtree and one of its neighbors is saved in the max_free 188 * field, and that field is updated when the tree is 189 * restructured. 190 * 191 * Sleator and Tarjan's top-down splay algorithm is employed to 192 * control height imbalance in the binary search tree. 193 * 194 * The map's min offset value is stored in map->header.end, and 195 * its max offset value is stored in map->header.start. These 196 * values act as sentinels for any forward or backward address 197 * scan of the list. The right and left fields of the map 198 * header point to the first and list map entries. The map 199 * header has a special value for the eflags field, 200 * MAP_ENTRY_HEADER, that is set initially, is never changed, 201 * and prevents an eflags match of the header with any other map 202 * entry. 203 * 204 * List of locks 205 * (c) const until freed 206 */ 207 struct vm_map { 208 struct vm_map_entry header; /* List of entries */ 209 struct sx lock; /* Lock for map data */ 210 struct mtx system_mtx; 211 int nentries; /* Number of entries */ 212 vm_size_t size; /* virtual size */ 213 u_int timestamp; /* Version number */ 214 u_char needs_wakeup; 215 u_char system_map; /* (c) Am I a system map? */ 216 vm_flags_t flags; /* flags for this vm_map */ 217 vm_map_entry_t root; /* Root of a binary search tree */ 218 pmap_t pmap; /* (c) Physical map */ 219 vm_offset_t anon_loc; 220 int busy; 221 #ifdef DIAGNOSTIC 222 int nupdates; 223 #endif 224 }; 225 226 /* 227 * vm_flags_t values 228 */ 229 #define MAP_WIREFUTURE 0x01 /* wire all future pages */ 230 #define MAP_BUSY_WAKEUP 0x02 /* thread(s) waiting on busy state */ 231 #define MAP_IS_SUB_MAP 0x04 /* has parent */ 232 #define MAP_ASLR 0x08 /* enabled ASLR */ 233 #define MAP_ASLR_IGNSTART 0x10 /* ASLR ignores data segment */ 234 #define MAP_REPLENISH 0x20 /* kmapent zone needs to be refilled */ 235 #define MAP_WXORX 0x40 /* enforce W^X */ 236 #define MAP_ASLR_STACK 0x80 /* stack location is randomized */ 237 238 #ifdef _KERNEL 239 #if defined(KLD_MODULE) && !defined(KLD_TIED) 240 #define vm_map_max(map) vm_map_max_KBI((map)) 241 #define vm_map_min(map) vm_map_min_KBI((map)) 242 #define vm_map_pmap(map) vm_map_pmap_KBI((map)) 243 #define vm_map_range_valid(map, start, end) \ 244 vm_map_range_valid_KBI((map), (start), (end)) 245 #else 246 static __inline vm_offset_t 247 vm_map_max(const struct vm_map *map) 248 { 249 250 return (map->header.start); 251 } 252 253 static __inline vm_offset_t 254 vm_map_min(const struct vm_map *map) 255 { 256 257 return (map->header.end); 258 } 259 260 static __inline pmap_t 261 vm_map_pmap(vm_map_t map) 262 { 263 return (map->pmap); 264 } 265 266 static __inline void 267 vm_map_modflags(vm_map_t map, vm_flags_t set, vm_flags_t clear) 268 { 269 map->flags = (map->flags | set) & ~clear; 270 } 271 272 static inline bool 273 vm_map_range_valid(vm_map_t map, vm_offset_t start, vm_offset_t end) 274 { 275 if (end < start) 276 return (false); 277 if (start < vm_map_min(map) || end > vm_map_max(map)) 278 return (false); 279 return (true); 280 } 281 282 #endif /* KLD_MODULE */ 283 #endif /* _KERNEL */ 284 285 /* 286 * Shareable process virtual address space. 287 * 288 * List of locks 289 * (c) const until freed 290 */ 291 struct vmspace { 292 struct vm_map vm_map; /* VM address map */ 293 struct shmmap_state *vm_shm; /* SYS5 shared memory private data XXX */ 294 segsz_t vm_swrss; /* resident set size before last swap */ 295 segsz_t vm_tsize; /* text size (pages) XXX */ 296 segsz_t vm_dsize; /* data size (pages) XXX */ 297 segsz_t vm_ssize; /* stack size (pages) */ 298 caddr_t vm_taddr; /* (c) user virtual address of text */ 299 caddr_t vm_daddr; /* (c) user virtual address of data */ 300 caddr_t vm_maxsaddr; /* user VA at max stack growth */ 301 vm_offset_t vm_stacktop; /* top of the stack, may not be page-aligned */ 302 vm_offset_t vm_shp_base; /* shared page address */ 303 u_int vm_refcnt; /* number of references */ 304 /* 305 * Keep the PMAP last, so that CPU-specific variations of that 306 * structure on a single architecture don't result in offset 307 * variations of the machine-independent fields in the vmspace. 308 */ 309 struct pmap vm_pmap; /* private physical map */ 310 }; 311 312 #ifdef _KERNEL 313 static __inline pmap_t 314 vmspace_pmap(struct vmspace *vmspace) 315 { 316 return &vmspace->vm_pmap; 317 } 318 #endif /* _KERNEL */ 319 320 #ifdef _KERNEL 321 /* 322 * Macros: vm_map_lock, etc. 323 * Function: 324 * Perform locking on the data portion of a map. Note that 325 * these macros mimic procedure calls returning void. The 326 * semicolon is supplied by the user of these macros, not 327 * by the macros themselves. The macros can safely be used 328 * as unbraced elements in a higher level statement. 329 */ 330 331 void _vm_map_lock(vm_map_t map, const char *file, int line); 332 void _vm_map_unlock(vm_map_t map, const char *file, int line); 333 int _vm_map_unlock_and_wait(vm_map_t map, int timo, const char *file, int line); 334 void _vm_map_lock_read(vm_map_t map, const char *file, int line); 335 void _vm_map_unlock_read(vm_map_t map, const char *file, int line); 336 int _vm_map_trylock(vm_map_t map, const char *file, int line); 337 int _vm_map_trylock_read(vm_map_t map, const char *file, int line); 338 int _vm_map_lock_upgrade(vm_map_t map, const char *file, int line); 339 void _vm_map_lock_downgrade(vm_map_t map, const char *file, int line); 340 int vm_map_locked(vm_map_t map); 341 void vm_map_wakeup(vm_map_t map); 342 void vm_map_busy(vm_map_t map); 343 void vm_map_unbusy(vm_map_t map); 344 void vm_map_wait_busy(vm_map_t map); 345 vm_offset_t vm_map_max_KBI(const struct vm_map *map); 346 vm_offset_t vm_map_min_KBI(const struct vm_map *map); 347 pmap_t vm_map_pmap_KBI(vm_map_t map); 348 bool vm_map_range_valid_KBI(vm_map_t map, vm_offset_t start, vm_offset_t end); 349 350 #define vm_map_lock(map) _vm_map_lock(map, LOCK_FILE, LOCK_LINE) 351 #define vm_map_unlock(map) _vm_map_unlock(map, LOCK_FILE, LOCK_LINE) 352 #define vm_map_unlock_and_wait(map, timo) \ 353 _vm_map_unlock_and_wait(map, timo, LOCK_FILE, LOCK_LINE) 354 #define vm_map_lock_read(map) _vm_map_lock_read(map, LOCK_FILE, LOCK_LINE) 355 #define vm_map_unlock_read(map) _vm_map_unlock_read(map, LOCK_FILE, LOCK_LINE) 356 #define vm_map_trylock(map) _vm_map_trylock(map, LOCK_FILE, LOCK_LINE) 357 #define vm_map_trylock_read(map) \ 358 _vm_map_trylock_read(map, LOCK_FILE, LOCK_LINE) 359 #define vm_map_lock_upgrade(map) \ 360 _vm_map_lock_upgrade(map, LOCK_FILE, LOCK_LINE) 361 #define vm_map_lock_downgrade(map) \ 362 _vm_map_lock_downgrade(map, LOCK_FILE, LOCK_LINE) 363 364 long vmspace_resident_count(struct vmspace *vmspace); 365 #endif /* _KERNEL */ 366 367 /* 368 * Copy-on-write flags for vm_map operations 369 */ 370 #define MAP_INHERIT_SHARE 0x00000001 371 #define MAP_COPY_ON_WRITE 0x00000002 372 #define MAP_NOFAULT 0x00000004 373 #define MAP_PREFAULT 0x00000008 374 #define MAP_PREFAULT_PARTIAL 0x00000010 375 #define MAP_DISABLE_SYNCER 0x00000020 376 #define MAP_CHECK_EXCL 0x00000040 377 #define MAP_CREATE_GUARD 0x00000080 378 #define MAP_DISABLE_COREDUMP 0x00000100 379 #define MAP_PREFAULT_MADVISE 0x00000200 /* from (user) madvise request */ 380 #define MAP_WRITECOUNT 0x00000400 381 #define MAP_REMAP 0x00000800 382 #define MAP_STACK_GROWS_DOWN 0x00001000 383 #define MAP_STACK_GROWS_UP 0x00002000 384 #define MAP_ACC_CHARGED 0x00004000 385 #define MAP_ACC_NO_CHARGE 0x00008000 386 #define MAP_CREATE_STACK_GAP_UP 0x00010000 387 #define MAP_CREATE_STACK_GAP_DN 0x00020000 388 #define MAP_VN_EXEC 0x00040000 389 #define MAP_SPLIT_BOUNDARY_MASK 0x00180000 390 #define MAP_NO_HINT 0x00200000 391 392 #define MAP_SPLIT_BOUNDARY_SHIFT 19 393 394 /* 395 * vm_fault option flags 396 */ 397 #define VM_FAULT_NORMAL 0x00 /* Nothing special */ 398 #define VM_FAULT_WIRE 0x01 /* Wire the mapped page */ 399 #define VM_FAULT_DIRTY 0x02 /* Dirty the page; use w/VM_PROT_COPY */ 400 #define VM_FAULT_NOFILL 0x04 /* Fail if the pager doesn't have a copy */ 401 402 /* 403 * Initially, mappings are slightly sequential. The maximum window size must 404 * account for the map entry's "read_ahead" field being defined as an uint8_t. 405 */ 406 #define VM_FAULT_READ_AHEAD_MIN 7 407 #define VM_FAULT_READ_AHEAD_INIT 15 408 #define VM_FAULT_READ_AHEAD_MAX min(atop(maxphys) - 1, UINT8_MAX) 409 410 /* 411 * The following "find_space" options are supported by vm_map_find(). 412 * 413 * For VMFS_ALIGNED_SPACE, the desired alignment is specified to 414 * the macro argument as log base 2 of the desired alignment. 415 */ 416 #define VMFS_NO_SPACE 0 /* don't find; use the given range */ 417 #define VMFS_ANY_SPACE 1 /* find a range with any alignment */ 418 #define VMFS_OPTIMAL_SPACE 2 /* find a range with optimal alignment*/ 419 #define VMFS_SUPER_SPACE 3 /* find a superpage-aligned range */ 420 #define VMFS_ALIGNED_SPACE(x) ((x) << 8) /* find a range with fixed alignment */ 421 422 /* 423 * vm_map_wire and vm_map_unwire option flags 424 */ 425 #define VM_MAP_WIRE_SYSTEM 0 /* wiring in a kernel map */ 426 #define VM_MAP_WIRE_USER 1 /* wiring in a user map */ 427 428 #define VM_MAP_WIRE_NOHOLES 0 /* region must not have holes */ 429 #define VM_MAP_WIRE_HOLESOK 2 /* region may have holes */ 430 431 #define VM_MAP_WIRE_WRITE 4 /* Validate writable. */ 432 433 typedef int vm_map_entry_reader(void *token, vm_map_entry_t addr, 434 vm_map_entry_t dest); 435 436 #ifndef _KERNEL 437 /* 438 * Find the successor of a map_entry, using a reader to dereference pointers. 439 * '*clone' is a copy of a vm_map entry. 'reader' is used to copy a map entry 440 * at some address into '*clone'. Change *clone to a copy of the next map 441 * entry, and return the address of that entry, or NULL if copying has failed. 442 * 443 * This function is made available to user-space code that needs to traverse 444 * map entries. 445 */ 446 static inline vm_map_entry_t 447 vm_map_entry_read_succ(void *token, struct vm_map_entry *const clone, 448 vm_map_entry_reader reader) 449 { 450 vm_map_entry_t after, backup; 451 vm_offset_t start; 452 453 after = clone->right; 454 start = clone->start; 455 if (!reader(token, after, clone)) 456 return (NULL); 457 backup = clone->left; 458 if (!reader(token, backup, clone)) 459 return (NULL); 460 if (clone->start > start) { 461 do { 462 after = backup; 463 backup = clone->left; 464 if (!reader(token, backup, clone)) 465 return (NULL); 466 } while (clone->start != start); 467 } 468 if (!reader(token, after, clone)) 469 return (NULL); 470 return (after); 471 } 472 #endif /* ! _KERNEL */ 473 474 #ifdef _KERNEL 475 boolean_t vm_map_check_protection (vm_map_t, vm_offset_t, vm_offset_t, vm_prot_t); 476 int vm_map_delete(vm_map_t, vm_offset_t, vm_offset_t); 477 int vm_map_find(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, vm_size_t, 478 vm_offset_t, int, vm_prot_t, vm_prot_t, int); 479 int vm_map_find_min(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, 480 vm_size_t, vm_offset_t, vm_offset_t, int, vm_prot_t, vm_prot_t, int); 481 int vm_map_find_aligned(vm_map_t map, vm_offset_t *addr, vm_size_t length, 482 vm_offset_t max_addr, vm_offset_t alignment); 483 int vm_map_fixed(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t, vm_size_t, 484 vm_prot_t, vm_prot_t, int); 485 vm_offset_t vm_map_findspace(vm_map_t, vm_offset_t, vm_size_t); 486 int vm_map_inherit (vm_map_t, vm_offset_t, vm_offset_t, vm_inherit_t); 487 void vm_map_init(vm_map_t, pmap_t, vm_offset_t, vm_offset_t); 488 int vm_map_insert (vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t, vm_offset_t, vm_prot_t, vm_prot_t, int); 489 int vm_map_lookup (vm_map_t *, vm_offset_t, vm_prot_t, vm_map_entry_t *, vm_object_t *, 490 vm_pindex_t *, vm_prot_t *, boolean_t *); 491 int vm_map_lookup_locked(vm_map_t *, vm_offset_t, vm_prot_t, vm_map_entry_t *, vm_object_t *, 492 vm_pindex_t *, vm_prot_t *, boolean_t *); 493 void vm_map_lookup_done (vm_map_t, vm_map_entry_t); 494 boolean_t vm_map_lookup_entry (vm_map_t, vm_offset_t, vm_map_entry_t *); 495 496 static inline vm_map_entry_t 497 vm_map_entry_first(vm_map_t map) 498 { 499 500 return (map->header.right); 501 } 502 503 static inline vm_map_entry_t 504 vm_map_entry_succ(vm_map_entry_t entry) 505 { 506 vm_map_entry_t after; 507 508 after = entry->right; 509 if (after->left->start > entry->start) { 510 do 511 after = after->left; 512 while (after->left != entry); 513 } 514 return (after); 515 } 516 517 #define VM_MAP_ENTRY_FOREACH(it, map) \ 518 for ((it) = vm_map_entry_first(map); \ 519 (it) != &(map)->header; \ 520 (it) = vm_map_entry_succ(it)) 521 522 #define VM_MAP_PROTECT_SET_PROT 0x0001 523 #define VM_MAP_PROTECT_SET_MAXPROT 0x0002 524 525 int vm_map_protect(vm_map_t map, vm_offset_t start, vm_offset_t end, 526 vm_prot_t new_prot, vm_prot_t new_maxprot, int flags); 527 int vm_map_remove (vm_map_t, vm_offset_t, vm_offset_t); 528 void vm_map_try_merge_entries(vm_map_t map, vm_map_entry_t prev, 529 vm_map_entry_t entry); 530 void vm_map_startup (void); 531 int vm_map_submap (vm_map_t, vm_offset_t, vm_offset_t, vm_map_t); 532 int vm_map_sync(vm_map_t, vm_offset_t, vm_offset_t, boolean_t, boolean_t); 533 int vm_map_madvise (vm_map_t, vm_offset_t, vm_offset_t, int); 534 int vm_map_stack (vm_map_t, vm_offset_t, vm_size_t, vm_prot_t, vm_prot_t, int); 535 int vm_map_unwire(vm_map_t map, vm_offset_t start, vm_offset_t end, 536 int flags); 537 int vm_map_wire(vm_map_t map, vm_offset_t start, vm_offset_t end, int flags); 538 int vm_map_wire_locked(vm_map_t map, vm_offset_t start, vm_offset_t end, 539 int flags); 540 long vmspace_swap_count(struct vmspace *vmspace); 541 void vm_map_entry_set_vnode_text(vm_map_entry_t entry, bool add); 542 #endif /* _KERNEL */ 543 #endif /* _VM_MAP_ */ 544