Annotation of sys/arch/amd64/include/vmparam.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vmparam.h,v 1.7 2007/05/15 16:38:33 art Exp $ */
2: /* $NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */
3:
4: /*-
5: * Copyright (c) 1990 The Regents of the University of California.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * William Jolitz.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * @(#)vmparam.h 5.9 (Berkeley) 5/12/91
36: */
37:
38: #ifndef _VMPARAM_H_
39: #define _VMPARAM_H_
40:
41: /*
42: * Machine dependent constants for amd64.
43: */
44:
45: /*
46: * USRSTACK is the top (end) of the user stack. Immediately above the
47: * user stack resides the user structure, which is UPAGES long and contains
48: * the kernel stack.
49: *
50: * Immediately after the user structure is the page table map, and then
51: * kernel address space.
52: */
53: #define USRSTACK VM_MAXUSER_ADDRESS
54:
55: /*
56: * Virtual memory related constants, all in bytes
57: */
58: #define MAXTSIZ (64*1024*1024) /* max text size */
59: #ifndef DFLDSIZ
60: #define DFLDSIZ (128*1024*1024) /* initial data size limit */
61: #endif
62: #ifndef MAXDSIZ
63: #define MAXDSIZ (1*1024*1024*1024) /* max data size */
64: #endif
65: #ifndef DFLSSIZ
66: #define DFLSSIZ (2*1024*1024) /* initial stack size limit */
67: #endif
68: #ifndef MAXSSIZ
69: #define MAXSSIZ (32*1024*1024) /* max stack size */
70: #endif
71:
72: #define STACKGAP_RANDOM 256*1024
73:
74: /*
75: * Size of shared memory map
76: */
77: #ifndef SHMMAXPGS
78: #define SHMMAXPGS 8192
79: #endif
80:
81: /*
82: * Size of User Raw I/O map
83: */
84: #define USRIOSIZE 300
85:
86: /*
87: * Mach derived constants
88: */
89:
90: /* user/kernel map constants */
91: #define VM_MIN_ADDRESS 0
92: #define VM_MAXUSER_ADDRESS 0x00007f7fffffc000
93: #define VM_MAX_ADDRESS 0x00007fbfdfeff000
94: #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000
95: #define VM_MAX_KERNEL_ADDRESS 0xffff800100000000
96:
97: #define VM_MAXUSER_ADDRESS32 0xffffc000
98:
99: /* virtual sizes (bytes) for various kernel submaps */
100: #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
101:
102: #define VM_PHYSSEG_MAX 16 /* actually we could have this many segments */
103: #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
104: #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
105:
106: #define VM_NFREELIST 2
107: #define VM_FREELIST_DEFAULT 0
108: #define VM_FREELIST_FIRST16 1
109:
110: #define __HAVE_VM_PAGE_MD
111: struct pv_entry;
112: struct vm_page_md {
113: struct pv_entry *pv_list;
114: };
115:
116: #define VM_MDPAGE_INIT(pg) do { \
117: (pg)->mdpage.pv_list = NULL; \
118: } while (0)
119:
120: #endif /* _VMPARAM_H_ */
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