| pmap-v4.c (160537) | pmap-v4.c (160889) |
|---|---|
| 1/* From: $NetBSD: pmap.c,v 1.148 2004/04/03 04:35:48 bsh Exp $ */ 2/*- 3 * Copyright 2004 Olivier Houchard. 4 * Copyright 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 * --- 133 unchanged lines hidden (view full) --- 142 * Special compilation symbols 143 * PMAP_DEBUG - Build in pmap_debug_level code 144 */ 145/* Include header files */ 146 147#include "opt_vm.h" 148 149#include <sys/cdefs.h> | 1/* From: $NetBSD: pmap.c,v 1.148 2004/04/03 04:35:48 bsh Exp $ */ 2/*- 3 * Copyright 2004 Olivier Houchard. 4 * Copyright 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 * --- 133 unchanged lines hidden (view full) --- 142 * Special compilation symbols 143 * PMAP_DEBUG - Build in pmap_debug_level code 144 */ 145/* Include header files */ 146 147#include "opt_vm.h" 148 149#include <sys/cdefs.h> |
| 150__FBSDID("$FreeBSD: head/sys/arm/arm/pmap.c 160537 2006-07-20 23:26:22Z alc $"); | 150__FBSDID("$FreeBSD: head/sys/arm/arm/pmap.c 160889 2006-08-01 19:06:06Z alc $"); |
| 151#include <sys/param.h> 152#include <sys/systm.h> 153#include <sys/kernel.h> 154#include <sys/proc.h> 155#include <sys/malloc.h> 156#include <sys/msgbuf.h> 157#include <sys/vmmeter.h> 158#include <sys/mman.h> --- 2595 unchanged lines hidden (view full) --- 2754 cpu_tlb_flushD(); 2755 cpu_cpwait(); 2756 kernel_vm_end = pmap_curmaxkvaddr; 2757 2758} 2759 2760 2761/* | 151#include <sys/param.h> 152#include <sys/systm.h> 153#include <sys/kernel.h> 154#include <sys/proc.h> 155#include <sys/malloc.h> 156#include <sys/msgbuf.h> 157#include <sys/vmmeter.h> 158#include <sys/mman.h> --- 2595 unchanged lines hidden (view full) --- 2754 cpu_tlb_flushD(); 2755 cpu_cpwait(); 2756 kernel_vm_end = pmap_curmaxkvaddr; 2757 2758} 2759 2760 2761/* |
| 2762 * pmap_page_protect: 2763 * 2764 * Lower the permission for all mappings to a given page. 2765 */ 2766void 2767pmap_page_protect(vm_page_t m, vm_prot_t prot) 2768{ 2769 switch(prot) { 2770 case VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE: 2771 case VM_PROT_READ|VM_PROT_WRITE: 2772 return; 2773 2774 case VM_PROT_READ: 2775 case VM_PROT_READ|VM_PROT_EXECUTE: 2776 pmap_clearbit(m, PVF_WRITE); 2777 break; 2778 2779 default: 2780 pmap_remove_all(m); 2781 break; 2782 } 2783 2784} 2785 2786 2787/* | |
| 2788 * Remove all pages from specified address space 2789 * this aids process exit speeds. Also, this code 2790 * is special cased for current process only, but 2791 * can have the more generic (and slightly slower) 2792 * mode enabled. This is much faster than pmap_remove 2793 * in the case of running down an entire address space. 2794 */ 2795void --- 1663 unchanged lines hidden (view full) --- 4459 pmap_clearbit(m, PVF_REF); 4460} 4461 4462 4463/* 4464 * Clear the write and modified bits in each of the given page's mappings. 4465 */ 4466void | 2762 * Remove all pages from specified address space 2763 * this aids process exit speeds. Also, this code 2764 * is special cased for current process only, but 2765 * can have the more generic (and slightly slower) 2766 * mode enabled. This is much faster than pmap_remove 2767 * in the case of running down an entire address space. 2768 */ 2769void --- 1663 unchanged lines hidden (view full) --- 4433 pmap_clearbit(m, PVF_REF); 4434} 4435 4436 4437/* 4438 * Clear the write and modified bits in each of the given page's mappings. 4439 */ 4440void |
| 4467pmap_clear_write(vm_page_t m) | 4441pmap_remove_write(vm_page_t m) |
| 4468{ 4469 4470 if (m->md.pvh_attrs & PVF_WRITE) 4471 pmap_clearbit(m, PVF_WRITE); 4472 else 4473 KASSERT((m->flags & PG_WRITEABLE) == 0, 4474 ("pmap_clear_write: page %p has PG_WRITEABLE set", m)); 4475} --- 346 unchanged lines hidden --- | 4442{ 4443 4444 if (m->md.pvh_attrs & PVF_WRITE) 4445 pmap_clearbit(m, PVF_WRITE); 4446 else 4447 KASSERT((m->flags & PG_WRITEABLE) == 0, 4448 ("pmap_clear_write: page %p has PG_WRITEABLE set", m)); 4449} --- 346 unchanged lines hidden --- |