2 * SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU)
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#)vm.h 8.2 (Berkeley) 12/13/93
32 * @(#)vm_prot.h 8.1 (Berkeley) 6/11/93
33 * @(#)vm_inherit.h 8.1 (Berkeley) 6/11/93
35 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
36 * All rights reserved.
38 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
40 * Permission to use, copy, modify and distribute this software and
41 * its documentation is hereby granted, provided that both the copyright
42 * notice and this permission notice appear in all copies of the
43 * software, derivative works or modified versions, and any portions
44 * thereof, and that both notices appear in supporting documentation.
46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
50 * Carnegie Mellon requests users of this software to return to
52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53 * School of Computer Science
54 * Carnegie Mellon University
55 * Pittsburgh PA 15213-3890
57 * any improvements or extensions that they make and grant Carnegie the
58 * rights to redistribute these changes.
66 #include <machine/vm.h>
68 typedef char vm_inherit_t; /* inheritance codes */
70 #define VM_INHERIT_SHARE ((vm_inherit_t) 0)
71 #define VM_INHERIT_COPY ((vm_inherit_t) 1)
72 #define VM_INHERIT_NONE ((vm_inherit_t) 2)
73 #define VM_INHERIT_ZERO ((vm_inherit_t) 3)
74 #define VM_INHERIT_DEFAULT VM_INHERIT_COPY
76 typedef u_char vm_prot_t; /* protection codes */
78 #define VM_PROT_NONE ((vm_prot_t) 0x00)
79 #define VM_PROT_READ ((vm_prot_t) 0x01)
80 #define VM_PROT_WRITE ((vm_prot_t) 0x02)
81 #define VM_PROT_EXECUTE ((vm_prot_t) 0x04)
82 #define VM_PROT_COPY ((vm_prot_t) 0x08) /* copy-on-read */
83 #define VM_PROT_PRIV_FLAG ((vm_prot_t) 0x10)
84 #define VM_PROT_FAULT_LOOKUP VM_PROT_PRIV_FLAG
85 #define VM_PROT_QUICK_NOFAULT VM_PROT_PRIV_FLAG /* same to save bits */
87 #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
88 #define VM_PROT_RW (VM_PROT_READ|VM_PROT_WRITE)
89 #define VM_PROT_DEFAULT VM_PROT_ALL
92 OBJT_RESERVED = 0, /* was OBJT_DEFAULT */
94 OBJT_DEFAULT = OBJT_SWAP,
103 typedef u_char objtype_t;
106 typedef union vm_map_object vm_map_object_t;
109 typedef struct vm_map_entry *vm_map_entry_t;
112 typedef struct vm_map *vm_map_t;
115 typedef struct vm_object *vm_object_t;
119 * This is defined in <sys/types.h> for the kernel so that non-vm kernel
120 * sources (mainly Mach-derived ones such as ddb) don't have to include
121 * vm stuff. Defining it there for applications might break things.
122 * Define it here for "applications" that include vm headers (e.g.,
126 typedef int boolean_t;
130 * The exact set of memory attributes is machine dependent. However,
131 * every machine is required to define VM_MEMATTR_DEFAULT and
132 * VM_MEMATTR_UNCACHEABLE.
134 typedef char vm_memattr_t; /* memory attribute codes */
137 * This is defined in <sys/types.h> for the kernel so that vnode_if.h
138 * doesn't have to include <vm/vm.h>.
141 typedef struct vm_page *vm_page_t;
145 typedef struct vm_reserv *vm_reserv_t;
148 * Information passed from the machine-independent VM initialization code
149 * for use by machine-dependant code (mainly for MMU support)
152 vm_offset_t buffer_sva;
153 vm_offset_t buffer_eva;
154 vm_offset_t clean_sva;
155 vm_offset_t clean_eva;
158 #define VA_IS_CLEANMAP(va) \
159 ((va) >= kmi.clean_sva && (va) < kmi.clean_eva)
161 extern struct kva_md_info kmi;
162 extern void vm_ksubmap_init(struct kva_md_info *);
164 extern int old_mlock;
166 extern int vm_ndomains;
170 bool swap_reserve(vm_ooffset_t incr);
171 bool swap_reserve_by_cred(vm_ooffset_t incr, struct ucred *cred);
172 void swap_reserve_force(vm_ooffset_t incr);
173 void swap_release(vm_ooffset_t decr);
174 void swap_release_by_cred(vm_ooffset_t decr, struct ucred *cred);