osfmk/vm/pmap.h

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  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
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  41  *
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  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
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  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      File:   vm/pmap.h
  60  *      Author: Avadis Tevanian, Jr.
  61  *      Date:   1985
  62  *
  63  *      Machine address mapping definitions -- machine-independent
  64  *      section.  [For machine-dependent section, see "machine/pmap.h".]
  65  */
  66
  67 #ifndef _VM_PMAP_H_
  68 #define _VM_PMAP_H_
  69
  70 #include <mach/kern_return.h>
  71 #include <mach/vm_param.h>
  72 #include <mach/vm_types.h>
  73 #include <mach/vm_attributes.h>
  74 #include <mach/boolean.h>
  75 #include <mach/vm_prot.h>
  76
  77 #ifdef  KERNEL_PRIVATE
  78
  79 /*
  80  *      The following is a description of the interface to the
  81  *      machine-dependent "physical map" data structure.  The module
  82  *      must provide a "pmap_t" data type that represents the
  83  *      set of valid virtual-to-physical addresses for one user
  84  *      address space.  [The kernel address space is represented
  85  *      by a distinguished "pmap_t".]  The routines described manage
  86  *      this type, install and update virtual-to-physical mappings,
  87  *      and perform operations on physical addresses common to
  88  *      many address spaces.
  89  */
  90
  91 /* Copy between a physical page and a virtual address */
  92 /* LP64todo - switch to vm_map_offset_t when it grows */
  93 extern kern_return_t    copypv(
  94                                 addr64_t source,
  95                                 addr64_t sink,
  96                                 unsigned int size,
  97                                 int which);
  98 #define cppvPsnk        1
  99 #define cppvPsnkb      31
 100 #define cppvPsrc        2
 101 #define cppvPsrcb      30
 102 #define cppvFsnk        4
 103 #define cppvFsnkb      29
 104 #define cppvFsrc        8
 105 #define cppvFsrcb      28
 106 #define cppvNoModSnk   16
 107 #define cppvNoModSnkb  27
 108 #define cppvNoRefSrc   32
 109 #define cppvNoRefSrcb  26
 110 #define cppvKmap       64       /* Use the kernel's vm_map */
 111 #define cppvKmapb      25
 112
 113 #ifdef  MACH_KERNEL_PRIVATE
 114
 115 #include <machine/pmap.h>
 116
 117 /*
 118  *      Routines used for initialization.
 119  *      There is traditionally also a pmap_bootstrap,
 120  *      used very early by machine-dependent code,
 121  *      but it is not part of the interface.
 122  *
 123  *      LP64todo -
 124  *      These interfaces are tied to the size of the
 125  *      kernel pmap - and therefore use the "local"
 126  *      vm_offset_t, etc... types.
 127  */
 128
 129 extern void             *pmap_steal_memory(vm_size_t size);
 130                                                 /* During VM initialization,
 131                                                  * steal a chunk of memory.
 132                                                  */
 133 extern unsigned int     pmap_free_pages(void);  /* During VM initialization,
 134                                                  * report remaining unused
 135                                                  * physical pages.
 136                                                  */
 137 extern void             pmap_startup(
 138                                 vm_offset_t *startp,
 139                                 vm_offset_t *endp);
 140                                                 /* During VM initialization,
 141                                                  * use remaining physical pages
 142                                                  * to allocate page frames.
 143                                                  */
 144 extern void             pmap_init(void);
 145                                                 /* Initialization,
 146                                                  * after kernel runs
 147                                                  * in virtual memory.
 148                                                  */
 149
 150 extern void             mapping_adjust(void);   /* Adjust free mapping count */
 151
 152 extern void             mapping_free_prime(void); /* Primes the mapping block release list */
 153
 154 #ifndef MACHINE_PAGES
 155 /*
 156  *      If machine/pmap.h defines MACHINE_PAGES, it must implement
 157  *      the above functions.  The pmap module has complete control.
 158  *      Otherwise, it must implement
 159  *              pmap_free_pages
 160  *              pmap_virtual_space
 161  *              pmap_next_page
 162  *              pmap_init
 163  *      and vm/vm_resident.c implements pmap_steal_memory and pmap_startup
 164  *      using pmap_free_pages, pmap_next_page, pmap_virtual_space,
 165  *      and pmap_enter.  pmap_free_pages may over-estimate the number
 166  *      of unused physical pages, and pmap_next_page may return FALSE
 167  *      to indicate that there are no more unused pages to return.
 168  *      However, for best performance pmap_free_pages should be accurate.
 169  */
 170
 171 extern boolean_t        pmap_next_page(ppnum_t *pnum);
 172 extern boolean_t        pmap_next_page_hi(ppnum_t *pnum);
 173                                                 /* During VM initialization,
 174                                                  * return the next unused
 175                                                  * physical page.
 176                                                  */
 177 extern void             pmap_virtual_space(
 178                                         vm_offset_t     *virtual_start,
 179                                         vm_offset_t     *virtual_end);
 180                                                 /* During VM initialization,
 181                                                  * report virtual space
 182                                                  * available for the kernel.
 183                                                  */
 184 #endif  /* MACHINE_PAGES */
 185
 186 /*
 187  *      Routines to manage the physical map data structure.
 188  */
 189 extern pmap_t           pmap_create(    /* Create a pmap_t. */
 190                                 ledger_t        ledger,
 191                                 vm_map_size_t   size,
 192                                 __unused boolean_t      is_64bit);
 193 extern pmap_t           (pmap_kernel)(void);    /* Return the kernel's pmap */
 194 extern void             pmap_reference(pmap_t pmap);    /* Gain a reference. */
 195 extern void             pmap_destroy(pmap_t pmap); /* Release a reference. */
 196 extern void             pmap_switch(pmap_t);
 197
 198
 199 extern void             pmap_enter(     /* Enter a mapping */
 200                                 pmap_t          pmap,
 201                                 vm_map_offset_t v,
 202                                 ppnum_t         pn,
 203                                 vm_prot_t       prot,
 204                                 vm_prot_t       fault_type,
 205                                 unsigned int    flags,
 206                                 boolean_t       wired);
 207
 208 extern kern_return_t    pmap_enter_options(
 209                                            pmap_t pmap,
 210                                            vm_map_offset_t v,
 211                                            ppnum_t pn,
 212                                            vm_prot_t prot,
 213                                            vm_prot_t fault_type,
 214                                            unsigned int flags,
 215                                            boolean_t wired,
 216                                            unsigned int options,
 217                                            void *arg);
 218
 219 extern void             pmap_remove_some_phys(
 220                                 pmap_t          pmap,
 221                                 ppnum_t         pn);
 222
 223
 224 /*
 225  *      Routines that operate on physical addresses.
 226  */
 227
 228 extern void             pmap_page_protect(      /* Restrict access to page. */
 229                                 ppnum_t phys,
 230                                 vm_prot_t       prot);
 231
 232 extern void             pmap_page_protect_options(      /* Restrict access to page. */
 233                                 ppnum_t phys,
 234                                 vm_prot_t       prot,
 235                                 unsigned int    options,
 236                                 void            *arg);
 237
 238 extern void             (pmap_zero_page)(
 239                                 ppnum_t         pn);
 240
 241 extern void             (pmap_zero_part_page)(
 242                                 ppnum_t         pn,
 243                                 vm_offset_t     offset,
 244                                 vm_size_t       len);
 245
 246 extern void             (pmap_copy_page)(
 247                                 ppnum_t         src,
 248                                 ppnum_t         dest);
 249
 250 extern void             (pmap_copy_part_page)(
 251                                 ppnum_t         src,
 252                                 vm_offset_t     src_offset,
 253                                 ppnum_t         dst,
 254                                 vm_offset_t     dst_offset,
 255                                 vm_size_t       len);
 256
 257 extern void             (pmap_copy_part_lpage)(
 258                                 vm_offset_t     src,
 259                                 ppnum_t         dst,
 260                                 vm_offset_t     dst_offset,
 261                                 vm_size_t       len);
 262
 263 extern void             (pmap_copy_part_rpage)(
 264                                 ppnum_t         src,
 265                                 vm_offset_t     src_offset,
 266                                 vm_offset_t     dst,
 267                                 vm_size_t       len);
 268
 269 extern unsigned int (pmap_disconnect)(  /* disconnect mappings and return reference and change */
 270                                 ppnum_t         phys);
 271
 272 extern unsigned int (pmap_disconnect_options)(  /* disconnect mappings and return reference and change */
 273                                 ppnum_t         phys,
 274                                 unsigned int    options,
 275                                 void            *arg);
 276
 277 extern kern_return_t    (pmap_attribute_cache_sync)(  /* Flush appropriate
 278                                                        * cache based on
 279                                                        * page number sent */
 280                                 ppnum_t         pn,
 281                                 vm_size_t       size,
 282                                 vm_machine_attribute_t attribute,
 283                                 vm_machine_attribute_val_t* value);
 284
 285 extern unsigned int     (pmap_cache_attributes)(
 286                                 ppnum_t         pn);
 287
 288 /*
 289  * Set (override) cache attributes for the specified physical page
 290  */
 291 extern  void            pmap_set_cache_attributes(
 292                                 ppnum_t,
 293                                 unsigned int);
 294 extern void pmap_sync_page_data_phys(ppnum_t pa);
 295 extern void pmap_sync_page_attributes_phys(ppnum_t pa);
 296
 297 /*
 298  * debug/assertions. pmap_verify_free returns true iff
 299  * the given physical page is mapped into no pmap.
 300  */
 301 extern boolean_t        pmap_verify_free(ppnum_t pn);
 302
 303 /*
 304  *      Statistics routines
 305  */
 306 extern int              (pmap_resident_count)(pmap_t pmap);
 307 extern int              (pmap_resident_max)(pmap_t pmap);
 308
 309 /*
 310  *      Sundry required (internal) routines
 311  */
 312 #ifdef CURRENTLY_UNUSED_AND_UNTESTED
 313 extern void             pmap_collect(pmap_t pmap);/* Perform garbage
 314                                                  * collection, if any */
 315 #endif
 316 /*
 317  *      Optional routines
 318  */
 319 extern void             (pmap_copy)(            /* Copy range of mappings,
 320                                                  * if desired. */
 321                                 pmap_t          dest,
 322                                 pmap_t          source,
 323                                 vm_map_offset_t dest_va,
 324                                 vm_map_size_t   size,
 325                                 vm_map_offset_t source_va);
 326
 327 extern kern_return_t    (pmap_attribute)(       /* Get/Set special memory
 328                                                  * attributes */
 329                                 pmap_t          pmap,
 330                                 vm_map_offset_t va,
 331                                 vm_map_size_t   size,
 332                                 vm_machine_attribute_t  attribute,
 333                                 vm_machine_attribute_val_t* value);
 334
 335 /*
 336  * Routines defined as macros.
 337  */
 338 #ifndef PMAP_ACTIVATE_USER
 339 #ifndef PMAP_ACTIVATE
 340 #define PMAP_ACTIVATE_USER(thr, cpu)
 341 #else   /* PMAP_ACTIVATE */
 342 #define PMAP_ACTIVATE_USER(thr, cpu) {                  \
 343         pmap_t  pmap;                                           \
 344                                                                 \
 345         pmap = (thr)->map->pmap;                                \
 346         if (pmap != pmap_kernel())                              \
 347                 PMAP_ACTIVATE(pmap, (thr), (cpu));              \
 348 }
 349 #endif  /* PMAP_ACTIVATE */
 350 #endif  /* PMAP_ACTIVATE_USER */
 351
 352 #ifndef PMAP_DEACTIVATE_USER
 353 #ifndef PMAP_DEACTIVATE
 354 #define PMAP_DEACTIVATE_USER(thr, cpu)
 355 #else   /* PMAP_DEACTIVATE */
 356 #define PMAP_DEACTIVATE_USER(thr, cpu) {                        \
 357         pmap_t  pmap;                                           \
 358                                                                 \
 359         pmap = (thr)->map->pmap;                                \
 360         if ((pmap) != pmap_kernel())                    \
 361                 PMAP_DEACTIVATE(pmap, (thr), (cpu));    \
 362 }
 363 #endif  /* PMAP_DEACTIVATE */
 364 #endif  /* PMAP_DEACTIVATE_USER */
 365
 366 #ifndef PMAP_ACTIVATE_KERNEL
 367 #ifndef PMAP_ACTIVATE
 368 #define PMAP_ACTIVATE_KERNEL(cpu)
 369 #else   /* PMAP_ACTIVATE */
 370 #define PMAP_ACTIVATE_KERNEL(cpu)                       \
 371                 PMAP_ACTIVATE(pmap_kernel(), THREAD_NULL, cpu)
 372 #endif  /* PMAP_ACTIVATE */
 373 #endif  /* PMAP_ACTIVATE_KERNEL */
 374
 375 #ifndef PMAP_DEACTIVATE_KERNEL
 376 #ifndef PMAP_DEACTIVATE
 377 #define PMAP_DEACTIVATE_KERNEL(cpu)
 378 #else   /* PMAP_DEACTIVATE */
 379 #define PMAP_DEACTIVATE_KERNEL(cpu)                     \
 380                 PMAP_DEACTIVATE(pmap_kernel(), THREAD_NULL, cpu)
 381 #endif  /* PMAP_DEACTIVATE */
 382 #endif  /* PMAP_DEACTIVATE_KERNEL */
 383
 384 #ifndef PMAP_ENTER
 385 /*
 386  *      Macro to be used in place of pmap_enter()
 387  */
 388 #define PMAP_ENTER(pmap, virtual_address, page, protection, fault_type, flags, wired) \
 389         MACRO_BEGIN                                                     \
 390         pmap_t          __pmap = (pmap);                                \
 391         vm_page_t       __page = (page);                                \
 392         int             __options = 0;                                  \
 393                                                                         \
 394         PMAP_ENTER_CHECK(__pmap, __page)                                \
 395         if (__page->object->internal) {                                 \
 396                 __options |= PMAP_OPTIONS_INTERNAL;                     \
 397         }                                                               \
 398         if (__page->reusable || __page->object->all_reusable) {         \
 399                 __options |= PMAP_OPTIONS_REUSABLE;                     \
 400         }                                                               \
 401         (void) pmap_enter_options(__pmap,                               \
 402                                   (virtual_address),                    \
 403                                   __page->phys_page,                    \
 404                                   (protection),                         \
 405                                   (fault_type),                         \
 406                                   (flags),                              \
 407                                   (wired),                              \
 408                                   __options,                            \
 409                                   NULL);                                \
 410         MACRO_END
 411 #endif  /* !PMAP_ENTER */
 412
 413 #ifndef PMAP_ENTER_OPTIONS
 414 #define PMAP_ENTER_OPTIONS(pmap, virtual_address, page, protection,     \
 415                            fault_type, flags, wired, options, result)   \
 416         MACRO_BEGIN                                                     \
 417         pmap_t          __pmap = (pmap);                                \
 418         vm_page_t       __page = (page);                                \
 419         int             __extra_options = 0;                            \
 420                                                                         \
 421         PMAP_ENTER_CHECK(__pmap, __page)                                \
 422         if (__page->object->internal) {                                 \
 423                 __extra_options |= PMAP_OPTIONS_INTERNAL;               \
 424         }                                                               \
 425         if (__page->reusable || __page->object->all_reusable) {         \
 426                 __extra_options |= PMAP_OPTIONS_REUSABLE;               \
 427         }                                                               \
 428         result = pmap_enter_options(__pmap,                             \
 429                                     (virtual_address),                  \
 430                                     __page->phys_page,                  \
 431                                     (protection),                       \
 432                                     (fault_type),                       \
 433                                     (flags),                            \
 434                                     (wired),                            \
 435                                     (options) | __extra_options,        \
 436                                     NULL);                              \
 437         MACRO_END
 438 #endif  /* !PMAP_ENTER_OPTIONS */
 439
 440 #ifndef PMAP_SET_CACHE_ATTR
 441 #define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op)             \
 442         MACRO_BEGIN                                                             \
 443                 if (!batch_pmap_op) {                                           \
 444                         pmap_set_cache_attributes(mem->phys_page, cache_attr);  \
 445                         object->set_cache_attr = TRUE;                          \
 446                 }                                                               \
 447         MACRO_END
 448 #endif  /* PMAP_SET_CACHE_ATTR */
 449
 450 #ifndef PMAP_BATCH_SET_CACHE_ATTR
 451 #define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list,                       \
 452                                         cache_attr, num_pages, batch_pmap_op)   \
 453         MACRO_BEGIN                                                             \
 454                 if ((batch_pmap_op)) {                                          \
 455                         unsigned int __page_idx=0;                              \
 456                         while (__page_idx < (num_pages)) {                      \
 457                                 pmap_set_cache_attributes(                      \
 458                                         user_page_list[__page_idx].phys_addr,   \
 459                                         (cache_attr));                          \
 460                                 __page_idx++;                                   \
 461                         }                                                       \
 462                         (object)->set_cache_attr = TRUE;                        \
 463                 }                                                               \
 464         MACRO_END
 465 #endif  /* PMAP_BATCH_SET_CACHE_ATTR */
 466
 467 #define PMAP_ENTER_CHECK(pmap, page)                                    \
 468 {                                                                       \
 469         if ((pmap) != kernel_pmap) {                                    \
 470                 ASSERT_PAGE_DECRYPTED(page);                            \
 471         }                                                               \
 472         if ((page)->error) {                                            \
 473                 panic("VM page %p should not have an error\n",          \
 474                         (page));                                        \
 475         }                                                               \
 476 }
 477
 478 /*
 479  *      Routines to manage reference/modify bits based on
 480  *      physical addresses, simulating them if not provided
 481  *      by the hardware.
 482  */
 483 struct pfc {
 484         long    pfc_cpus;
 485         long    pfc_invalid_global;
 486 };
 487
 488 typedef struct pfc      pmap_flush_context;
 489
 490                                 /* Clear reference bit */
 491 extern void             pmap_clear_reference(ppnum_t     pn);
 492                                 /* Return reference bit */
 493 extern boolean_t        (pmap_is_referenced)(ppnum_t     pn);
 494                                 /* Set modify bit */
 495 extern void             pmap_set_modify(ppnum_t  pn);
 496                                 /* Clear modify bit */
 497 extern void             pmap_clear_modify(ppnum_t pn);
 498                                 /* Return modify bit */
 499 extern boolean_t        pmap_is_modified(ppnum_t pn);
 500                                 /* Return modified and referenced bits */
 501 extern unsigned int pmap_get_refmod(ppnum_t pn);
 502                                 /* Clear modified and referenced bits */
 503 extern void                     pmap_clear_refmod(ppnum_t pn, unsigned int mask);
 504 #define VM_MEM_MODIFIED         0x01    /* Modified bit */
 505 #define VM_MEM_REFERENCED       0x02    /* Referenced bit */
 506 extern void                     pmap_clear_refmod_options(ppnum_t pn, unsigned int mask, unsigned int options, void *);
 507
 508
 509 extern void pmap_flush_context_init(pmap_flush_context *);
 510 extern void pmap_flush(pmap_flush_context *);
 511
 512 /*
 513  *      Routines that operate on ranges of virtual addresses.
 514  */
 515 extern void             pmap_protect(   /* Change protections. */
 516                                 pmap_t          map,
 517                                 vm_map_offset_t s,
 518                                 vm_map_offset_t e,
 519                                 vm_prot_t       prot);
 520
 521 extern void             pmap_protect_options(   /* Change protections. */
 522                                 pmap_t          map,
 523                                 vm_map_offset_t s,
 524                                 vm_map_offset_t e,
 525                                 vm_prot_t       prot,
 526                                 unsigned int    options,
 527                                 void            *arg);
 528
 529 extern void             (pmap_pageable)(
 530                                 pmap_t          pmap,
 531                                 vm_map_offset_t start,
 532                                 vm_map_offset_t end,
 533                                 boolean_t       pageable);
 534
 535
 536 extern uint64_t pmap_nesting_size_min;
 537 extern uint64_t pmap_nesting_size_max;
 538
 539 extern kern_return_t pmap_nest(pmap_t,
 540                                pmap_t,
 541                                addr64_t,
 542                                addr64_t,
 543                                uint64_t);
 544 extern kern_return_t pmap_unnest(pmap_t,
 545                                  addr64_t,
 546                                  uint64_t);
 547 extern boolean_t pmap_adjust_unnest_parameters(pmap_t, vm_map_offset_t *, vm_map_offset_t *);
 548 #endif  /* MACH_KERNEL_PRIVATE */
 549
 550 extern boolean_t        pmap_is_noencrypt(ppnum_t);
 551 extern void             pmap_set_noencrypt(ppnum_t pn);
 552 extern void             pmap_clear_noencrypt(ppnum_t pn);
 553
 554 /*
 555  * JMM - This portion is exported to other kernel components right now,
 556  * but will be pulled back in the future when the needed functionality
 557  * is provided in a cleaner manner.
 558  */
 559
 560 extern pmap_t   kernel_pmap;                    /* The kernel's map */
 561 #define         pmap_kernel()   (kernel_pmap)
 562
 563 /* machine independent WIMG bits */
 564
 565 #define VM_MEM_GUARDED          0x1             /* (G) Guarded Storage */
 566 #define VM_MEM_COHERENT         0x2             /* (M) Memory Coherency */
 567 #define VM_MEM_NOT_CACHEABLE    0x4             /* (I) Cache Inhibit */
 568 #define VM_MEM_WRITE_THROUGH    0x8             /* (W) Write-Through */
 569
 570 #define VM_WIMG_USE_DEFAULT     0x80
 571 #define VM_WIMG_MASK            0xFF
 572
 573 #define VM_MEM_SUPERPAGE        0x100           /* map a superpage instead of a base page */
 574 #define VM_MEM_STACK            0x200
 575
 576 #define PMAP_OPTIONS_NOWAIT     0x1             /* don't block, return
 577                                                  * KERN_RESOURCE_SHORTAGE
 578                                                  * instead */
 579 #define PMAP_OPTIONS_NOENTER    0x2             /* expand pmap if needed
 580                                                  * but don't enter mapping
 581                                                  */
 582 #define PMAP_OPTIONS_COMPRESSOR 0x4             /* credit the compressor for
 583                                                  * this operation */
 584 #define PMAP_OPTIONS_INTERNAL   0x8             /* page from internal object */
 585 #define PMAP_OPTIONS_REUSABLE   0x10            /* page is "reusable" */
 586 #define PMAP_OPTIONS_NOFLUSH    0x20            /* delay flushing of pmap */
 587 #define PMAP_OPTIONS_NOREFMOD   0x40            /* don't need ref/mod on disconnect */
 588 #define PMAP_OPTIONS_REMOVE     0x100           /* removing a mapping */
 589
 590 #if     !defined(__LP64__)
 591 extern vm_offset_t      pmap_extract(pmap_t pmap,
 592                                 vm_map_offset_t va);
 593 #endif
 594 extern void             pmap_change_wiring(     /* Specify pageability */
 595                                 pmap_t          pmap,
 596                                 vm_map_offset_t va,
 597                                 boolean_t       wired);
 598
 599 /* LP64todo - switch to vm_map_offset_t when it grows */
 600 extern void             pmap_remove(    /* Remove mappings. */
 601                                 pmap_t          map,
 602                                 vm_map_offset_t s,
 603                                 vm_map_offset_t e);
 604
 605 extern void             pmap_remove_options(    /* Remove mappings. */
 606                                 pmap_t          map,
 607                                 vm_map_offset_t s,
 608                                 vm_map_offset_t e,
 609                                 int             options);
 610
 611 extern void             pmap_reusable(
 612                                 pmap_t          map,
 613                                 vm_map_offset_t s,
 614                                 vm_map_offset_t e,
 615                                 boolean_t       reusable);
 616
 617 extern void             fillPage(ppnum_t pa, unsigned int fill);
 618
 619 extern void pmap_map_sharedpage(task_t task, pmap_t pmap);
 620 extern void pmap_unmap_sharedpage(pmap_t pmap);
 621
 622 #if defined(__LP64__)
 623 void pmap_pre_expand(pmap_t pmap, vm_map_offset_t vaddr);
 624 #endif
 625
 626 unsigned int pmap_query_resident(pmap_t pmap,
 627                                  vm_map_offset_t s,
 628                                  vm_map_offset_t e);
 629
 630 #endif  /* KERNEL_PRIVATE */
 631
 632 #endif  /* _VM_PMAP_H_ */