vmparam3x.h revision 1.16
1 /* $NetBSD: vmparam3x.h,v 1.16 2002/12/10 05:14:35 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 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 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 41 * from: @(#)vmparam.h 7.3 (Berkeley) 5/7/91 42 * vmparam.h,v 1.2 1993/05/22 07:58:38 cgd Exp 43 */ 44 45 /* 46 * Machine dependent constants for Sun3X 47 */ 48 49 /* 50 * USRSTACK is the top (end) of the user stack. 51 */ 52 #define USRSTACK KERNBASE /* High end of user stack */ 53 54 /* 55 * Virtual memory related constants, all in bytes 56 */ 57 #ifndef MAXTSIZ 58 #define MAXTSIZ (8*1024*1024) /* max text size */ 59 #endif 60 #ifndef DFLDSIZ 61 #define DFLDSIZ (32*1024*1024) /* initial data size limit */ 62 #endif 63 #ifndef MAXDSIZ 64 #define MAXDSIZ (128*1024*1024) /* max data size */ 65 #endif 66 #ifndef DFLSSIZ 67 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 68 #endif 69 #ifndef MAXSSIZ 70 #define MAXSSIZ (32*1024*1024) /* max stack size */ 71 #endif 72 73 /* 74 * PTEs for mapping user space into the kernel for phyio operations. 75 * The actual limitation for physio requests will be the DVMA space, 76 * and that is fixed by hardware design at 1MB. We could make the 77 * physio map larger than that, but it would not buy us much. 78 */ 79 #ifndef USRIOSIZE 80 #define USRIOSIZE 128 /* 1 MB */ 81 #endif 82 83 /* 84 * PTEs for system V style shared memory. 85 * This is basically slop for kmempt which we actually allocate (malloc) from. 86 */ 87 #ifndef SHMMAXPGS 88 #define SHMMAXPGS 2048 /* 16 MB */ 89 #endif 90
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