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 /* Copyright (c) 1988 AT&T */ 22 /* All Rights Reserved */ 23 24 /* 25 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 #ifndef _SYS_VM_MACHPARAM_H 30 #define _SYS_VM_MACHPARAM_H 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Machine dependent constants for sun4u. 38 */ 39 40 /* 41 * USRTEXT is the start of the user text/data space. 42 */ 43 #define USRTEXT 0x2000 44 45 /* 46 * Virtual memory related constants for UNIX resource control, all in bytes 47 * The default stack size of 8M allows an optimization of mmu mapping 48 * resources so that in normal use a single mmu region map entry (smeg) 49 * can be used to map both the stack and shared libraries 50 */ 51 #define MAXSSIZ (0x7ffff000) /* max stack size limit */ 52 #define DFLSSIZ (8*1024*1024) /* initial stack size limit */ 53 54 /* 55 * Minimum allowable virtual address space to be used 56 * by the seg_map segment driver for fast kernel mappings. 57 */ 58 #define MINMAPSIZE 0x200000 59 60 /* 61 * The virtual address space to be used by the seg_map segment 62 * driver for fast kernel mappings. 63 * 64 * Size is 1/8th of physmem at boot. 65 */ 66 67 #ifdef _LP64 68 #define SEGMAPSIZE (256L * 1024L * 1024L * 1024L) /* 256G */ 69 #else 70 #define SEGMAPSIZE (256 * 1024 * 1024) /* 256M */ 71 #endif /* _LP64 */ 72 73 /* 74 * Define the default virtual size and valid size range for the segkp segment. 75 */ 76 #ifdef _LP64 77 #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ 78 #define SEGKPMAXSIZE (24L * 1024L * 1024L * 1024L) /* 24G */ 79 #define SEGKPMINSIZE (512L * 1024 * 1024L) /* 512M */ 80 #else 81 #define SEGKPDEFSIZE (512 * 1024 * 1024) 82 #define SEGKPMAXSIZE (512 * 1024 * 1024) 83 #define SEGKPMINSIZE (512 * 1024 * 1024) 84 #endif /* _LP64 */ 85 86 /* 87 * Define minimum size for zio segment 88 */ 89 #define SEGZIOMINSIZE (512L * 1024L * 1024L) /* 512M */ 90 #define SEGZIOMAXSIZE (512L * 1024L * 1024L * 1024L) /* 512G */ 91 92 /* 93 * The time for a process to be blocked before being very swappable. 94 * This is a number of seconds which the system takes as being a non-trivial 95 * amount of real time. You probably shouldn't change this; 96 * it is used in subtle ways (fractions and multiples of it are, that is, like 97 * half of a ``long time'', almost a long time, etc.) 98 * It is related to human patience and other factors which don't really 99 * change over time. 100 */ 101 #define MAXSLP 20 102 103 /* 104 * A swapped in process is given a small amount of core without being bothered 105 * by the page replacement algorithm. Basically this says that if you are 106 * swapped in you deserve some resources. We protect the last SAFERSS 107 * pages against paging and will just swap you out rather than paging you. 108 * Note that each process has at least UPAGES pages which are not 109 * paged anyways so this number just means a swapped in process is 110 * given around 32k bytes. 111 */ 112 /* 113 * nominal ``small'' resident set size 114 * protected against replacement 115 */ 116 #define SAFERSS 3 117 118 /* 119 * DISKRPM is used to estimate the number of paging i/o operations 120 * which one can expect from a single disk controller. 121 * 122 * XXX - The system doesn't account for multiple swap devices. 123 */ 124 #define DISKRPM 60 125 126 /* 127 * The maximum value for handspreadpages which is the the distance 128 * between the two clock hands in pages. 129 */ 130 #define MAXHANDSPREADPAGES ((64 * 1024 * 1024) / PAGESIZE) 131 132 /* 133 * Paged text files that are less than PGTHRESH bytes 134 * may be "prefaulted in" instead of demand paged. 135 */ 136 #define PGTHRESH (280 * 1024) 137 138 /* 139 * Cacheable bit for 64 bit MXCC Stream Source registers 140 */ 141 #define BC_CACHE_SHIFT 36 142 143 /* 144 * set type for 64 bit phys addr variables. Needed at least for interface 145 * with MXCC. 146 */ 147 148 #ifndef _ASM 149 typedef unsigned long long pa_t; 150 #endif 151 152 #ifdef __cplusplus 153 } 154 #endif 155 156 #endif /* _SYS_VM_MACHPARAM_H */ 157