xref: /titanic_44/usr/src/uts/intel/sys/vmparam.h (revision 49b225e1cfa7bbf7738d4df0a03f18e3283426eb)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 /*
31  * Portions of this source code were derived from Berkeley 4.3 BSD
32  * under license from the Regents of the University of California.
33  */
34 
35 #ifndef _SYS_VMPARAM_H
36 #define	_SYS_VMPARAM_H
37 
38 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
39 #include <sys/vm_machparam.h>
40 #endif
41 
42 #ifdef	__cplusplus
43 extern "C" {
44 #endif
45 
46 #define	SSIZE		4096		/* initial stack size */
47 #define	SINCR		4096		/* increment of stack */
48 
49 /*
50  * USRSTACK is the top (end) of the user stack.
51  */
52 #if defined(__amd64)
53 #define	USRSTACK	USERLIMIT
54 #define	USRSTACK32	0x8048000
55 #define	USRSTACK64_32	USERLIMIT32
56 #elif defined(__i386)
57 #define	USRSTACK	0x8048000
58 #define	USRSTACK32	USRSTACK
59 #define	USRSTACK64_32	USRSTACK
60 #endif
61 
62 /*
63  * Implementation architecture independent sections of the kernel use
64  * this section.
65  */
66 #if (defined(_KERNEL) || defined(_KMEMUSER)) && !defined(_MACHDEP)
67 
68 #if defined(_KERNEL) && !defined(_ASM)
69 extern const unsigned int	_diskrpm;
70 extern const unsigned long	_dsize_limit;
71 extern const unsigned long	_ssize_limit;
72 extern const unsigned long	_pgthresh;
73 extern const unsigned int	_maxslp;
74 extern const unsigned long	_maxhandspreadpages;
75 #endif	/* defined(_KERNEL) && !defined(_ASM) */
76 
77 #define	DISKRPM		_diskrpm
78 #define	DSIZE_LIMIT	_dsize_limit
79 #define	SSIZE_LIMIT	_ssize_limit
80 #define	PGTHRESH	_pgthresh
81 #define	MAXSLP		_maxslp
82 #define	MAXHANDSPREADPAGES	_maxhandspreadpages
83 
84 #endif	/* (defined(_KERNEL) || defined(_KMEMUSER)) && !defined(_MACHDEP) */
85 
86 #ifdef	__cplusplus
87 }
88 #endif
89 
90 #endif	/* _SYS_VMPARAM_H */
91