sys/i386/i386/pmap_base.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-4-Clause
   3  *
   4  * Copyright (c) 1991 Regents of the University of California.
   5  * All rights reserved.
   6  * Copyright (c) 1994 John S. Dyson
   7  * All rights reserved.
   8  * Copyright (c) 1994 David Greenman
   9  * All rights reserved.
  10  * Copyright (c) 2005-2010 Alan L. Cox <alc@cs.rice.edu>
  11  * All rights reserved.
  12  *
  13  * This code is derived from software contributed to Berkeley by
  14  * the Systems Programming Group of the University of Utah Computer
  15  * Science Department and William Jolitz of UUNET Technologies Inc.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions
  19  * are met:
  20  * 1. Redistributions of source code must retain the above copyright
  21  *    notice, this list of conditions and the following disclaimer.
  22  * 2. Redistributions in binary form must reproduce the above copyright
  23  *    notice, this list of conditions and the following disclaimer in the
  24  *    documentation and/or other materials provided with the distribution.
  25  * 3. All advertising materials mentioning features or use of this software
  26  *    must display the following acknowledgement:
  27  *      This product includes software developed by the University of
  28  *      California, Berkeley and its contributors.
  29  * 4. Neither the name of the University nor the names of its contributors
  30  *    may be used to endorse or promote products derived from this software
  31  *    without specific prior written permission.
  32  *
  33  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  36  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  37  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  41  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  42  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  43  * SUCH DAMAGE.
  44  *
  45  *      from:   @(#)pmap.c      7.7 (Berkeley)  5/12/91
  46  */
  47 /*-
  48  * Copyright (c) 2003 Networks Associates Technology, Inc.
  49  * All rights reserved.
  50  * Copyright (c) 2018 The FreeBSD Foundation
  51  * All rights reserved.
  52  *
  53  * This software was developed for the FreeBSD Project by Jake Burkholder,
  54  * Safeport Network Services, and Network Associates Laboratories, the
  55  * Security Research Division of Network Associates, Inc. under
  56  * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
  57  * CHATS research program.
  58  *
  59  * Portions of this software were developed by
  60  * Konstantin Belousov <kib@FreeBSD.org> under sponsorship from
  61  * the FreeBSD Foundation.
  62  *
  63  * Redistribution and use in source and binary forms, with or without
  64  * modification, are permitted provided that the following conditions
  65  * are met:
  66  * 1. Redistributions of source code must retain the above copyright
  67  *    notice, this list of conditions and the following disclaimer.
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in the
  70  *    documentation and/or other materials provided with the distribution.
  71  *
  72  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  73  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  74  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  75  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  76  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  77  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  78  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  79  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  80  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  81  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  82  * SUCH DAMAGE.
  83  */
  84
  85 #include <sys/cdefs.h>
  86 __FBSDID("$FreeBSD$");
  87
  88 #include "opt_apic.h"
  89 #include "opt_cpu.h"
  90 #include "opt_pmap.h"
  91 #include "opt_smp.h"
  92 #include "opt_vm.h"
  93
  94 #include <sys/param.h>
  95 #include <sys/systm.h>
  96 #include <sys/kernel.h>
  97 #include <sys/vmmeter.h>
  98 #include <sys/sysctl.h>
  99 #include <machine/cpu.h>
 100 #include <machine/cputypes.h>
 101 #include <machine/md_var.h>
 102 #ifdef DEV_APIC
 103 #include <sys/bus.h>
 104 #include <machine/intr_machdep.h>
 105 #include <x86/apicvar.h>
 106 #endif
 107 #include <x86/ifunc.h>
 108
 109 static SYSCTL_NODE(_vm, OID_AUTO, pmap, CTLFLAG_RD, 0, "VM/pmap parameters");
 110
 111 #include <machine/vmparam.h>
 112 #include <vm/vm.h>
 113 #include <vm/vm_page.h>
 114 #include <vm/pmap.h>
 115 #include <machine/pmap_base.h>
 116
 117 vm_offset_t virtual_avail;      /* VA of first avail page (after kernel bss) */
 118 vm_offset_t virtual_end;        /* VA of last avail page (end of kernel AS) */
 119
 120 int unmapped_buf_allowed = 1;
 121
 122 int pti;
 123
 124 u_long physfree;        /* phys addr of next free page */
 125 u_long vm86phystk;      /* PA of vm86/bios stack */
 126 u_long vm86paddr;       /* address of vm86 region */
 127 int vm86pa;             /* phys addr of vm86 region */
 128 u_long KERNend;         /* phys addr end of kernel (just after bss) */
 129 u_long KPTphys;         /* phys addr of kernel page tables */
 130 caddr_t ptvmmap = 0;
 131 vm_offset_t kernel_vm_end;
 132
 133 int i386_pmap_VM_NFREEORDER;
 134 int i386_pmap_VM_LEVEL_0_ORDER;
 135 int i386_pmap_PDRSHIFT;
 136
 137 int pat_works = 1;
 138 SYSCTL_INT(_vm_pmap, OID_AUTO, pat_works, CTLFLAG_RD,
 139     &pat_works, 1,
 140     "Is page attribute table fully functional?");
 141
 142 int pg_ps_enabled = 1;
 143 SYSCTL_INT(_vm_pmap, OID_AUTO, pg_ps_enabled, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
 144     &pg_ps_enabled, 0,
 145     "Are large page mappings enabled?");
 146
 147 int pv_entry_max = 0;
 148 SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_max, CTLFLAG_RD,
 149     &pv_entry_max, 0,
 150     "Max number of PV entries");
 151
 152 int pv_entry_count = 0;
 153 SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_count, CTLFLAG_RD,
 154     &pv_entry_count, 0,
 155     "Current number of pv entries");
 156
 157 #ifndef PMAP_SHPGPERPROC
 158 #define PMAP_SHPGPERPROC 200
 159 #endif
 160
 161 int shpgperproc = PMAP_SHPGPERPROC;
 162 SYSCTL_INT(_vm_pmap, OID_AUTO, shpgperproc, CTLFLAG_RD,
 163     &shpgperproc, 0,
 164     "Page share factor per proc");
 165
 166 static SYSCTL_NODE(_vm_pmap, OID_AUTO, pde, CTLFLAG_RD, 0,
 167     "2/4MB page mapping counters");
 168
 169 u_long pmap_pde_demotions;
 170 SYSCTL_ULONG(_vm_pmap_pde, OID_AUTO, demotions, CTLFLAG_RD,
 171     &pmap_pde_demotions, 0,
 172     "2/4MB page demotions");
 173
 174 u_long pmap_pde_mappings;
 175 SYSCTL_ULONG(_vm_pmap_pde, OID_AUTO, mappings, CTLFLAG_RD,
 176     &pmap_pde_mappings, 0,
 177     "2/4MB page mappings");
 178
 179 u_long pmap_pde_p_failures;
 180 SYSCTL_ULONG(_vm_pmap_pde, OID_AUTO, p_failures, CTLFLAG_RD,
 181     &pmap_pde_p_failures, 0,
 182     "2/4MB page promotion failures");
 183
 184 u_long pmap_pde_promotions;
 185 SYSCTL_ULONG(_vm_pmap_pde, OID_AUTO, promotions, CTLFLAG_RD,
 186     &pmap_pde_promotions, 0,
 187     "2/4MB page promotions");
 188
 189 #ifdef SMP
 190 int PMAP1changedcpu;
 191 SYSCTL_INT(_debug, OID_AUTO, PMAP1changedcpu, CTLFLAG_RD,
 192     &PMAP1changedcpu, 0,
 193     "Number of times pmap_pte_quick changed CPU with same PMAP1");
 194 #endif
 195
 196 int PMAP1changed;
 197 SYSCTL_INT(_debug, OID_AUTO, PMAP1changed, CTLFLAG_RD,
 198     &PMAP1changed, 0,
 199     "Number of times pmap_pte_quick changed PMAP1");
 200 int PMAP1unchanged;
 201 SYSCTL_INT(_debug, OID_AUTO, PMAP1unchanged, CTLFLAG_RD,
 202     &PMAP1unchanged, 0,
 203     "Number of times pmap_pte_quick didn't change PMAP1");
 204
 205 static int
 206 kvm_size(SYSCTL_HANDLER_ARGS)
 207 {
 208         unsigned long ksize;
 209
 210         ksize = VM_MAX_KERNEL_ADDRESS - KERNBASE;
 211         return (sysctl_handle_long(oidp, &ksize, 0, req));
 212 }
 213 SYSCTL_PROC(_vm, OID_AUTO, kvm_size, CTLTYPE_LONG | CTLFLAG_RD | CTLFLAG_MPSAFE,
 214     0, 0, kvm_size, "IU",
 215     "Size of KVM");
 216
 217 static int
 218 kvm_free(SYSCTL_HANDLER_ARGS)
 219 {
 220         unsigned long kfree;
 221
 222         kfree = VM_MAX_KERNEL_ADDRESS - kernel_vm_end;
 223         return (sysctl_handle_long(oidp, &kfree, 0, req));
 224 }
 225 SYSCTL_PROC(_vm, OID_AUTO, kvm_free, CTLTYPE_LONG | CTLFLAG_RD | CTLFLAG_MPSAFE,
 226     0, 0, kvm_free, "IU",
 227     "Amount of KVM free");
 228
 229 #ifdef PV_STATS
 230 int pc_chunk_count, pc_chunk_allocs, pc_chunk_frees, pc_chunk_tryfail;
 231 long pv_entry_frees, pv_entry_allocs;
 232 int pv_entry_spare;
 233
 234 SYSCTL_INT(_vm_pmap, OID_AUTO, pc_chunk_count, CTLFLAG_RD,
 235     &pc_chunk_count, 0,
 236     "Current number of pv entry chunks");
 237 SYSCTL_INT(_vm_pmap, OID_AUTO, pc_chunk_allocs, CTLFLAG_RD,
 238     &pc_chunk_allocs, 0,
 239     "Current number of pv entry chunks allocated");
 240 SYSCTL_INT(_vm_pmap, OID_AUTO, pc_chunk_frees, CTLFLAG_RD,
 241     &pc_chunk_frees, 0,
 242     "Current number of pv entry chunks frees");
 243 SYSCTL_INT(_vm_pmap, OID_AUTO, pc_chunk_tryfail, CTLFLAG_RD,
 244     &pc_chunk_tryfail, 0,
 245     "Number of times tried to get a chunk page but failed.");
 246 SYSCTL_LONG(_vm_pmap, OID_AUTO, pv_entry_frees, CTLFLAG_RD,
 247     &pv_entry_frees, 0,
 248     "Current number of pv entry frees");
 249 SYSCTL_LONG(_vm_pmap, OID_AUTO, pv_entry_allocs, CTLFLAG_RD,
 250     &pv_entry_allocs, 0,
 251     "Current number of pv entry allocs");
 252 SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_spare, CTLFLAG_RD,
 253     &pv_entry_spare, 0,
 254     "Current number of spare pv entries");
 255 #endif
 256
 257 struct pmap kernel_pmap_store;
 258 static struct pmap_methods *pmap_methods_ptr;
 259
 260 /*
 261  * Initialize a vm_page's machine-dependent fields.
 262  */
 263 void
 264 pmap_page_init(vm_page_t m)
 265 {
 266
 267         TAILQ_INIT(&m->md.pv_list);
 268         m->md.pat_mode = PAT_WRITE_BACK;
 269 }
 270
 271 void
 272 invltlb_glob(void)
 273 {
 274
 275         invltlb();
 276 }
 277
 278 static void pmap_invalidate_cache_range_selfsnoop(vm_offset_t sva,
 279     vm_offset_t eva);
 280 static void pmap_invalidate_cache_range_all(vm_offset_t sva,
 281     vm_offset_t eva);
 282
 283 void
 284 pmap_flush_page(vm_page_t m)
 285 {
 286
 287         pmap_methods_ptr->pm_flush_page(m);
 288 }
 289
 290 DEFINE_IFUNC(, void, pmap_invalidate_cache_range, (vm_offset_t, vm_offset_t),
 291     static)
 292 {
 293
 294         if ((cpu_feature & CPUID_SS) != 0)
 295                 return (pmap_invalidate_cache_range_selfsnoop);
 296         if ((cpu_feature & CPUID_CLFSH) != 0)
 297                 return (pmap_force_invalidate_cache_range);
 298         return (pmap_invalidate_cache_range_all);
 299 }
 300
 301 #define PMAP_CLFLUSH_THRESHOLD  (2 * 1024 * 1024)
 302
 303 static void
 304 pmap_invalidate_cache_range_check_align(vm_offset_t sva, vm_offset_t eva)
 305 {
 306
 307         KASSERT((sva & PAGE_MASK) == 0,
 308             ("pmap_invalidate_cache_range: sva not page-aligned"));
 309         KASSERT((eva & PAGE_MASK) == 0,
 310             ("pmap_invalidate_cache_range: eva not page-aligned"));
 311 }
 312
 313 static void
 314 pmap_invalidate_cache_range_selfsnoop(vm_offset_t sva, vm_offset_t eva)
 315 {
 316
 317         pmap_invalidate_cache_range_check_align(sva, eva);
 318 }
 319
 320 void
 321 pmap_force_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva)
 322 {
 323
 324         sva &= ~(vm_offset_t)(cpu_clflush_line_size - 1);
 325         if (eva - sva >= PMAP_CLFLUSH_THRESHOLD) {
 326                 /*
 327                  * The supplied range is bigger than 2MB.
 328                  * Globally invalidate cache.
 329                  */
 330                 pmap_invalidate_cache();
 331                 return;
 332         }
 333
 334 #ifdef DEV_APIC
 335         /*
 336          * XXX: Some CPUs fault, hang, or trash the local APIC
 337          * registers if we use CLFLUSH on the local APIC
 338          * range.  The local APIC is always uncached, so we
 339          * don't need to flush for that range anyway.
 340          */
 341         if (pmap_kextract(sva) == lapic_paddr)
 342                 return;
 343 #endif
 344
 345         if ((cpu_stdext_feature & CPUID_STDEXT_CLFLUSHOPT) != 0) {
 346                 /*
 347                  * Do per-cache line flush.  Use the sfence
 348                  * instruction to insure that previous stores are
 349                  * included in the write-back.  The processor
 350                  * propagates flush to other processors in the cache
 351                  * coherence domain.
 352                  */
 353                 sfence();
 354                 for (; sva < eva; sva += cpu_clflush_line_size)
 355                         clflushopt(sva);
 356                 sfence();
 357         } else {
 358                 /*
 359                  * Writes are ordered by CLFLUSH on Intel CPUs.
 360                  */
 361                 if (cpu_vendor_id != CPU_VENDOR_INTEL)
 362                         mfence();
 363                 for (; sva < eva; sva += cpu_clflush_line_size)
 364                         clflush(sva);
 365                 if (cpu_vendor_id != CPU_VENDOR_INTEL)
 366                         mfence();
 367         }
 368 }
 369
 370 static void
 371 pmap_invalidate_cache_range_all(vm_offset_t sva, vm_offset_t eva)
 372 {
 373
 374         pmap_invalidate_cache_range_check_align(sva, eva);
 375         pmap_invalidate_cache();
 376 }
 377
 378 void
 379 pmap_invalidate_cache_pages(vm_page_t *pages, int count)
 380 {
 381         int i;
 382
 383         if (count >= PMAP_CLFLUSH_THRESHOLD / PAGE_SIZE ||
 384             (cpu_feature & CPUID_CLFSH) == 0) {
 385                 pmap_invalidate_cache();
 386         } else {
 387                 for (i = 0; i < count; i++)
 388                         pmap_flush_page(pages[i]);
 389         }
 390 }
 391
 392 void
 393 pmap_ksetrw(vm_offset_t va)
 394 {
 395
 396         pmap_methods_ptr->pm_ksetrw(va);
 397 }
 398
 399 void
 400 pmap_remap_lower(bool enable)
 401 {
 402
 403         pmap_methods_ptr->pm_remap_lower(enable);
 404 }
 405
 406 void
 407 pmap_remap_lowptdi(bool enable)
 408 {
 409
 410         pmap_methods_ptr->pm_remap_lowptdi(enable);
 411 }
 412
 413 void
 414 pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
 415     vm_offset_t *addr, vm_size_t size)
 416 {
 417
 418         return (pmap_methods_ptr->pm_align_superpage(object, offset,
 419             addr, size));
 420 }
 421
 422 vm_offset_t
 423 pmap_quick_enter_page(vm_page_t m)
 424 {
 425
 426         return (pmap_methods_ptr->pm_quick_enter_page(m));
 427 }
 428
 429 void
 430 pmap_quick_remove_page(vm_offset_t addr)
 431 {
 432
 433         return (pmap_methods_ptr->pm_quick_remove_page(addr));
 434 }
 435
 436 void *
 437 pmap_trm_alloc(size_t size, int flags)
 438 {
 439
 440         return (pmap_methods_ptr->pm_trm_alloc(size, flags));
 441 }
 442
 443 void
 444 pmap_trm_free(void *addr, size_t size)
 445 {
 446
 447         pmap_methods_ptr->pm_trm_free(addr, size);
 448 }
 449
 450 void
 451 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
 452 {
 453 }
 454
 455 vm_offset_t
 456 pmap_get_map_low(void)
 457 {
 458
 459         return (pmap_methods_ptr->pm_get_map_low());
 460 }
 461
 462 vm_offset_t
 463 pmap_get_vm_maxuser_address(void)
 464 {
 465
 466         return (pmap_methods_ptr->pm_get_vm_maxuser_address());
 467 }
 468
 469 vm_paddr_t
 470 pmap_kextract(vm_offset_t va)
 471 {
 472
 473         return (pmap_methods_ptr->pm_kextract(va));
 474 }
 475
 476 vm_paddr_t
 477 pmap_pg_frame(vm_paddr_t pa)
 478 {
 479
 480         return (pmap_methods_ptr->pm_pg_frame(pa));
 481 }
 482
 483 void
 484 pmap_sf_buf_map(struct sf_buf *sf)
 485 {
 486
 487         pmap_methods_ptr->pm_sf_buf_map(sf);
 488 }
 489
 490 void
 491 pmap_cp_slow0_map(vm_offset_t kaddr, int plen, vm_page_t *ma)
 492 {
 493
 494         pmap_methods_ptr->pm_cp_slow0_map(kaddr, plen, ma);
 495 }
 496
 497 u_int
 498 pmap_get_kcr3(void)
 499 {
 500
 501         return (pmap_methods_ptr->pm_get_kcr3());
 502 }
 503
 504 u_int
 505 pmap_get_cr3(pmap_t pmap)
 506 {
 507
 508         return (pmap_methods_ptr->pm_get_cr3(pmap));
 509 }
 510
 511 caddr_t
 512 pmap_cmap3(vm_paddr_t pa, u_int pte_flags)
 513 {
 514
 515         return (pmap_methods_ptr->pm_cmap3(pa, pte_flags));
 516 }
 517
 518 void
 519 pmap_basemem_setup(u_int basemem)
 520 {
 521
 522         pmap_methods_ptr->pm_basemem_setup(basemem);
 523 }
 524
 525 void
 526 pmap_set_nx(void)
 527 {
 528
 529         pmap_methods_ptr->pm_set_nx();
 530 }
 531
 532 void *
 533 pmap_bios16_enter(void)
 534 {
 535
 536         return (pmap_methods_ptr->pm_bios16_enter());
 537 }
 538
 539 void
 540 pmap_bios16_leave(void *handle)
 541 {
 542
 543         pmap_methods_ptr->pm_bios16_leave(handle);
 544 }
 545
 546 void
 547 pmap_bootstrap(vm_paddr_t firstaddr)
 548 {
 549
 550         pmap_methods_ptr->pm_bootstrap(firstaddr);
 551 }
 552
 553 boolean_t
 554 pmap_is_valid_memattr(pmap_t pmap, vm_memattr_t mode)
 555 {
 556
 557         return (pmap_methods_ptr->pm_is_valid_memattr(pmap, mode));
 558 }
 559
 560 int
 561 pmap_cache_bits(pmap_t pmap, int mode, boolean_t is_pde)
 562 {
 563
 564         return (pmap_methods_ptr->pm_cache_bits(pmap, mode, is_pde));
 565 }
 566
 567 bool
 568 pmap_ps_enabled(pmap_t pmap)
 569 {
 570
 571         return (pmap_methods_ptr->pm_ps_enabled(pmap));
 572 }
 573
 574 void
 575 pmap_pinit0(pmap_t pmap)
 576 {
 577
 578         pmap_methods_ptr->pm_pinit0(pmap);
 579 }
 580
 581 int
 582 pmap_pinit(pmap_t pmap)
 583 {
 584
 585         return (pmap_methods_ptr->pm_pinit(pmap));
 586 }
 587
 588 void
 589 pmap_activate(struct thread *td)
 590 {
 591
 592         pmap_methods_ptr->pm_activate(td);
 593 }
 594
 595 void
 596 pmap_activate_boot(pmap_t pmap)
 597 {
 598
 599         pmap_methods_ptr->pm_activate_boot(pmap);
 600 }
 601
 602 void
 603 pmap_advise(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, int advice)
 604 {
 605
 606         pmap_methods_ptr->pm_advise(pmap, sva, eva, advice);
 607 }
 608
 609 void
 610 pmap_clear_modify(vm_page_t m)
 611 {
 612
 613         pmap_methods_ptr->pm_clear_modify(m);
 614 }
 615
 616 int
 617 pmap_change_attr(vm_offset_t va, vm_size_t size, int mode)
 618 {
 619
 620         return (pmap_methods_ptr->pm_change_attr(va, size, mode));
 621 }
 622
 623 int
 624 pmap_mincore(pmap_t pmap, vm_offset_t addr, vm_paddr_t *locked_pa)
 625 {
 626
 627         return (pmap_methods_ptr->pm_mincore(pmap, addr, locked_pa));
 628 }
 629
 630 void
 631 pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
 632     vm_offset_t src_addr)
 633 {
 634
 635         pmap_methods_ptr->pm_copy(dst_pmap, src_pmap, dst_addr, len, src_addr);
 636 }
 637
 638 void
 639 pmap_copy_page(vm_page_t src, vm_page_t dst)
 640 {
 641
 642         pmap_methods_ptr->pm_copy_page(src, dst);
 643 }
 644
 645 void
 646 pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset, vm_page_t mb[],
 647     vm_offset_t b_offset, int xfersize)
 648 {
 649
 650         pmap_methods_ptr->pm_copy_pages(ma, a_offset, mb, b_offset, xfersize);
 651 }
 652
 653 void
 654 pmap_zero_page(vm_page_t m)
 655 {
 656
 657         pmap_methods_ptr->pm_zero_page(m);
 658 }
 659
 660 void
 661 pmap_zero_page_area(vm_page_t m, int off, int size)
 662 {
 663
 664         pmap_methods_ptr->pm_zero_page_area(m, off, size);
 665 }
 666
 667 int
 668 pmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot,
 669     u_int flags, int8_t psind)
 670 {
 671
 672         return (pmap_methods_ptr->pm_enter(pmap, va, m, prot, flags, psind));
 673 }
 674
 675 void
 676 pmap_enter_object(pmap_t pmap, vm_offset_t start, vm_offset_t end,
 677     vm_page_t m_start, vm_prot_t prot)
 678 {
 679
 680         pmap_methods_ptr->pm_enter_object(pmap, start, end, m_start, prot);
 681 }
 682
 683 void
 684 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot)
 685 {
 686
 687         pmap_methods_ptr->pm_enter_quick(pmap, va, m, prot);
 688 }
 689
 690 void *
 691 pmap_kenter_temporary(vm_paddr_t pa, int i)
 692 {
 693
 694         return (pmap_methods_ptr->pm_kenter_temporary(pa, i));
 695 }
 696
 697 void
 698 pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_object_t object,
 699     vm_pindex_t pindex, vm_size_t size)
 700 {
 701
 702         pmap_methods_ptr->pm_object_init_pt(pmap, addr, object, pindex, size);
 703 }
 704
 705 void
 706 pmap_unwire(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
 707 {
 708
 709         pmap_methods_ptr->pm_unwire(pmap, sva, eva);
 710 }
 711
 712 boolean_t
 713 pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
 714 {
 715
 716         return (pmap_methods_ptr->pm_page_exists_quick(pmap, m));
 717 }
 718
 719 int
 720 pmap_page_wired_mappings(vm_page_t m)
 721 {
 722
 723         return (pmap_methods_ptr->pm_page_wired_mappings(m));
 724 }
 725
 726 boolean_t
 727 pmap_page_is_mapped(vm_page_t m)
 728 {
 729
 730         return (pmap_methods_ptr->pm_page_is_mapped(m));
 731 }
 732
 733 void
 734 pmap_remove_pages(pmap_t pmap)
 735 {
 736
 737         pmap_methods_ptr->pm_remove_pages(pmap);
 738 }
 739
 740 boolean_t
 741 pmap_is_modified(vm_page_t m)
 742 {
 743
 744         return (pmap_methods_ptr->pm_is_modified(m));
 745 }
 746
 747 boolean_t
 748 pmap_is_prefaultable(pmap_t pmap, vm_offset_t addr)
 749 {
 750
 751         return (pmap_methods_ptr->pm_is_prefaultable(pmap, addr));
 752 }
 753
 754 boolean_t
 755 pmap_is_referenced(vm_page_t m)
 756 {
 757
 758         return (pmap_methods_ptr->pm_is_referenced(m));
 759 }
 760
 761 void
 762 pmap_remove_write(vm_page_t m)
 763 {
 764
 765         pmap_methods_ptr->pm_remove_write(m);
 766 }
 767
 768 int
 769 pmap_ts_referenced(vm_page_t m)
 770 {
 771
 772         return (pmap_methods_ptr->pm_ts_referenced(m));
 773 }
 774
 775 void *
 776 pmap_mapdev_attr(vm_paddr_t pa, vm_size_t size, int mode)
 777 {
 778
 779         return (pmap_methods_ptr->pm_mapdev_attr(pa, size, mode));
 780 }
 781
 782 void *
 783 pmap_mapdev(vm_paddr_t pa, vm_size_t size)
 784 {
 785
 786         return (pmap_methods_ptr->pm_mapdev_attr(pa, size, PAT_UNCACHEABLE));
 787 }
 788
 789 void *
 790 pmap_mapbios(vm_paddr_t pa, vm_size_t size)
 791 {
 792
 793         return (pmap_methods_ptr->pm_mapdev_attr(pa, size, PAT_WRITE_BACK));
 794 }
 795
 796 void
 797 pmap_unmapdev(vm_offset_t va, vm_size_t size)
 798 {
 799
 800         pmap_methods_ptr->pm_unmapdev(va, size);
 801 }
 802
 803 void
 804 pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma)
 805 {
 806
 807         pmap_methods_ptr->pm_page_set_memattr(m, ma);
 808 }
 809
 810 vm_paddr_t
 811 pmap_extract(pmap_t pmap, vm_offset_t va)
 812 {
 813
 814         return (pmap_methods_ptr->pm_extract(pmap, va));
 815 }
 816
 817 vm_page_t
 818 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
 819 {
 820
 821         return (pmap_methods_ptr->pm_extract_and_hold(pmap, va, prot));
 822 }
 823
 824 vm_offset_t
 825 pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
 826 {
 827
 828         return (pmap_methods_ptr->pm_map(virt, start, end, prot));
 829 }
 830
 831 void
 832 pmap_qenter(vm_offset_t sva, vm_page_t *ma, int count)
 833 {
 834
 835         pmap_methods_ptr->pm_qenter(sva, ma, count);
 836 }
 837
 838 void
 839 pmap_qremove(vm_offset_t sva, int count)
 840 {
 841
 842         pmap_methods_ptr->pm_qremove(sva, count);
 843 }
 844
 845 void
 846 pmap_release(pmap_t pmap)
 847 {
 848
 849         pmap_methods_ptr->pm_release(pmap);
 850 }
 851
 852 void
 853 pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
 854 {
 855
 856         pmap_methods_ptr->pm_remove(pmap, sva, eva);
 857 }
 858
 859 void
 860 pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
 861 {
 862
 863         pmap_methods_ptr->pm_protect(pmap, sva, eva, prot);
 864 }
 865
 866 void
 867 pmap_remove_all(vm_page_t m)
 868 {
 869
 870         pmap_methods_ptr->pm_remove_all(m);
 871 }
 872
 873 void
 874 pmap_init(void)
 875 {
 876
 877         pmap_methods_ptr->pm_init();
 878 }
 879
 880 void
 881 pmap_init_pat(void)
 882 {
 883
 884         pmap_methods_ptr->pm_init_pat();
 885 }
 886
 887 void
 888 pmap_growkernel(vm_offset_t addr)
 889 {
 890
 891         pmap_methods_ptr->pm_growkernel(addr);
 892 }
 893
 894 void
 895 pmap_invalidate_page(pmap_t pmap, vm_offset_t va)
 896 {
 897
 898         pmap_methods_ptr->pm_invalidate_page(pmap, va);
 899 }
 900
 901 void
 902 pmap_invalidate_range(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
 903 {
 904
 905         pmap_methods_ptr->pm_invalidate_range(pmap, sva, eva);
 906 }
 907
 908 void
 909 pmap_invalidate_all(pmap_t pmap)
 910 {
 911
 912         pmap_methods_ptr->pm_invalidate_all(pmap);
 913 }
 914
 915 void
 916 pmap_invalidate_cache(void)
 917 {
 918
 919         pmap_methods_ptr->pm_invalidate_cache();
 920 }
 921
 922 void
 923 pmap_kenter(vm_offset_t va, vm_paddr_t pa)
 924 {
 925
 926         pmap_methods_ptr->pm_kenter(va, pa);
 927 }
 928
 929 void
 930 pmap_kremove(vm_offset_t va)
 931 {
 932
 933         pmap_methods_ptr->pm_kremove(va);
 934 }
 935
 936 extern struct pmap_methods pmap_pae_methods, pmap_nopae_methods;
 937 int pae_mode;
 938 SYSCTL_INT(_vm_pmap, OID_AUTO, pae_mode, CTLFLAG_RD,
 939     &pae_mode, 1,
 940     "PAE");
 941
 942 void
 943 pmap_cold(void)
 944 {
 945
 946         if ((cpu_feature & CPUID_PAE) != 0) {
 947                 pae_mode = 1;
 948                 pmap_methods_ptr = &pmap_pae_methods;
 949                 pmap_pae_cold();
 950         } else {
 951                 pmap_methods_ptr = &pmap_nopae_methods;
 952                 pmap_nopae_cold();
 953         }
 954 }