pmap.c (e29632c9e12dabb912a35bba6e8a86646d38cf75) pmap.c (910548dea729e52e27a95187cd3f7e9859ba05f2)
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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1281{
1282 vm_page_t ptdpg;
1283
1284 /*
1285 * No need to allocate page table space yet but we do need a valid
1286 * page directory table.
1287 */
1288 if (pmap->pm_pdir == NULL)
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 * Copyright (c) 1994 John S. Dyson
5 * All rights reserved.
6 * Copyright (c) 1994 David Greenman
7 * All rights reserved.
8 *

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1281{
1282 vm_page_t ptdpg;
1283
1284 /*
1285 * No need to allocate page table space yet but we do need a valid
1286 * page directory table.
1287 */
1288 if (pmap->pm_pdir == NULL)
1289 pmap->pm_pdir =
1290 (pd_entry_t *)kmem_alloc_pageable(kernel_map, PAGE_SIZE);
1289 pmap->pm_pdir = (pd_entry_t *)kmem_alloc_pageable(kernel_map,
1290 NBPTD);
1291
1292 /*
1293 * allocate object for the ptes
1294 */
1295 if (pmap->pm_pteobj == NULL)
1291
1292 /*
1293 * allocate object for the ptes
1294 */
1295 if (pmap->pm_pteobj == NULL)
1296 pmap->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PTDPTDI + 1);
1296 pmap->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PTDPTDI +
1297 NPGPTD);
1297
1298 /*
1299 * allocate the page directory page
1300 */
1301 ptdpg = vm_page_grab(pmap->pm_pteobj, PTDPTDI,
1302 VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED | VM_ALLOC_ZERO);
1303 vm_page_lock_queues();
1304 vm_page_flag_clear(ptdpg, PG_BUSY);
1305 ptdpg->valid = VM_PAGE_BITS_ALL;
1306 vm_page_unlock_queues();
1307
1298
1299 /*
1300 * allocate the page directory page
1301 */
1302 ptdpg = vm_page_grab(pmap->pm_pteobj, PTDPTDI,
1303 VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED | VM_ALLOC_ZERO);
1304 vm_page_lock_queues();
1305 vm_page_flag_clear(ptdpg, PG_BUSY);
1306 ptdpg->valid = VM_PAGE_BITS_ALL;
1307 vm_page_unlock_queues();
1308
1308 pmap_qenter((vm_offset_t) pmap->pm_pdir, &ptdpg, 1);
1309 pmap_qenter((vm_offset_t)pmap->pm_pdir, &ptdpg, NPGPTD);
1309 if ((ptdpg->flags & PG_ZERO) == 0)
1310 bzero(pmap->pm_pdir, PAGE_SIZE);
1311
1312 mtx_lock_spin(&allpmaps_lock);
1313 LIST_INSERT_HEAD(&allpmaps, pmap, pm_list);
1314 mtx_unlock_spin(&allpmaps_lock);
1315 /* Wire in kernel global address entries. */
1316 /* XXX copies current process, does not fill in MPPTDI */

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3418 LIST_FOREACH(p, &allproc, p_list) {
3419 if (p->p_pid != pid)
3420 continue;
3421
3422 if (p->p_vmspace) {
3423 int i,j;
3424 index = 0;
3425 pmap = vmspace_pmap(p->p_vmspace);
1310 if ((ptdpg->flags & PG_ZERO) == 0)
1311 bzero(pmap->pm_pdir, PAGE_SIZE);
1312
1313 mtx_lock_spin(&allpmaps_lock);
1314 LIST_INSERT_HEAD(&allpmaps, pmap, pm_list);
1315 mtx_unlock_spin(&allpmaps_lock);
1316 /* Wire in kernel global address entries. */
1317 /* XXX copies current process, does not fill in MPPTDI */

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3419 LIST_FOREACH(p, &allproc, p_list) {
3420 if (p->p_pid != pid)
3421 continue;
3422
3423 if (p->p_vmspace) {
3424 int i,j;
3425 index = 0;
3426 pmap = vmspace_pmap(p->p_vmspace);
3426 for (i = 0; i < NPDEPG; i++) {
3427 for (i = 0; i < NPDEPTD; i++) {
3427 pd_entry_t *pde;
3428 pt_entry_t *pte;
3429 vm_offset_t base = i << PDRSHIFT;
3430
3431 pde = &pmap->pm_pdir[i];
3432 if (pde && pmap_pde_v(pde)) {
3433 for (j = 0; j < NPTEPG; j++) {
3434 vm_offset_t va = base + (j << PAGE_SHIFT);

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3478 pmap_t pm;
3479{
3480 int i, j;
3481 vm_offset_t va;
3482 pt_entry_t *ptep;
3483
3484 if (pm == kernel_pmap)
3485 return;
3428 pd_entry_t *pde;
3429 pt_entry_t *pte;
3430 vm_offset_t base = i << PDRSHIFT;
3431
3432 pde = &pmap->pm_pdir[i];
3433 if (pde && pmap_pde_v(pde)) {
3434 for (j = 0; j < NPTEPG; j++) {
3435 vm_offset_t va = base + (j << PAGE_SHIFT);

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3479 pmap_t pm;
3480{
3481 int i, j;
3482 vm_offset_t va;
3483 pt_entry_t *ptep;
3484
3485 if (pm == kernel_pmap)
3486 return;
3486 for (i = 0; i < NPDEPG; i++)
3487 for (i = 0; i < NPDEPTD; i++)
3487 if (pm->pm_pdir[i])
3488 for (j = 0; j < NPTEPG; j++) {
3489 va = (i << PDRSHIFT) + (j << PAGE_SHIFT);
3490 if (pm == kernel_pmap && va < KERNBASE)
3491 continue;
3492 if (pm != kernel_pmap && va > UPT_MAX_ADDRESS)
3493 continue;
3494 ptep = pmap_pte_quick(pm, va);

--- 22 unchanged lines hidden --- 		3488 if (pm->pm_pdir[i])
3489 for (j = 0; j < NPTEPG; j++) {
3490 va = (i << PDRSHIFT) + (j << PAGE_SHIFT);
3491 if (pm == kernel_pmap && va < KERNBASE)
3492 continue;
3493 if (pm != kernel_pmap && va > UPT_MAX_ADDRESS)
3494 continue;
3495 ptep = pmap_pte_quick(pm, va);

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