1 /* $NetBSD: vmparam.h,v 1.55 2022/08/20 23:48:50 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 35 */ 36 37 #ifndef _X86_64_VMPARAM_H_ 38 #define _X86_64_VMPARAM_H_ 39 40 #ifdef __x86_64__ 41 42 #include <sys/mutex.h> 43 #ifdef _KERNEL_OPT 44 #include "opt_xen.h" 45 #endif 46 47 /* 48 * Machine dependent constants for 386. 49 */ 50 51 /* 52 * Page size on the amd64 s not variable in the traditional sense. 53 * We override the PAGE_* definitions to compile-time constants. 54 */ 55 #define PAGE_SHIFT 12 56 #define PAGE_SIZE (1 << PAGE_SHIFT) 57 #define PAGE_MASK (PAGE_SIZE - 1) 58 59 /* 60 * Default pager_map of 16MB is awfully small. There is plenty 61 * of VA so use it. 62 */ 63 #define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024) 64 65 /* 66 * Defaults for Unified Buffer Cache parameters. 67 */ 68 69 #ifndef UBC_WINSHIFT 70 #define UBC_WINSHIFT 16 /* 64kB */ 71 #endif 72 #ifndef UBC_NWINS 73 #define UBC_NWINS 4096 /* 256MB */ 74 #endif 75 76 /* 77 * USRSTACK is the top (end) of the user stack. Immediately above the 78 * user stack resides the user structure, which is UPAGES long and contains 79 * the kernel stack. 80 * 81 * Immediately after the user structure is the page table map, and then 82 * kernel address space. 83 */ 84 #define USRSTACK VM_MAXUSER_ADDRESS 85 86 #define USRSTACK32 VM_MAXUSER_ADDRESS32 87 88 /* 89 * Virtual memory related constants, all in bytes 90 */ 91 #define MAXTSIZ (8L*1024*1024*1024) /* max text size */ 92 #ifndef DFLDSIZ 93 #define DFLDSIZ (256*1024*1024) /* initial data size limit */ 94 #endif 95 #ifndef MAXDSIZ 96 #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 97 #endif 98 #ifndef DFLSSIZ 99 #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 100 #endif 101 #ifndef MAXSSIZ 102 #define MAXSSIZ (128*1024*1024) /* max stack size */ 103 #endif 104 105 /* 106 * 32bit memory related constants. 107 */ 108 109 #ifndef DFLDSIZ32 110 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 111 #endif 112 #ifndef MAXDSIZ32 113 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 114 #endif 115 #ifndef DFLSSIZ32 116 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 117 #endif 118 #ifndef MAXSSIZ32 119 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 120 #endif 121 122 /* 123 * Size of User Raw I/O map 124 */ 125 #define USRIOSIZE 300 126 127 /* User map constants */ 128 #define VM_MIN_ADDRESS 0 129 #define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE) 130 #define VM_MAXUSER_ADDRESS32 0xfffff000 131 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 132 133 /* 134 * Kernel map constants. 135 * MIN = VA_SIGN_NEG(L4_SLOT_KERN * NBPD_L4) 136 * MAX = MIN + NKL4_MAX_ENTRIES * NBPD_L4 137 */ 138 #ifndef XENPV 139 #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffff800000000000 140 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 141 #else 142 #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 143 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffc00000000000 144 #endif 145 146 #if defined(_KMEMUSER) || defined(_KERNEL) 147 extern vaddr_t vm_min_kernel_address; 148 extern vaddr_t vm_max_kernel_address; 149 #define VM_MIN_KERNEL_ADDRESS vm_min_kernel_address 150 #define VM_MAX_KERNEL_ADDRESS vm_max_kernel_address 151 #endif 152 153 #define PDP_SIZE 1 154 155 /* 156 * The address to which unspecified mapping requests default 157 */ 158 #ifdef _KERNEL_OPT 159 #include "opt_uvm.h" 160 #endif 161 #define __USE_TOPDOWN_VM 162 163 #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ 164 round_page((vaddr_t)(da) + (vsize_t)maxdmap) 165 166 #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ 167 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size) 168 #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ 169 round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) 170 171 /* virtual sizes (bytes) for various kernel submaps */ 172 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 173 174 #define VM_PHYSSEG_MAX 64 /* 1 "hole" + 63 free lists */ 175 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 176 177 #define VM_NFREELIST 6 178 #define VM_FREELIST_DEFAULT 0 179 #define VM_FREELIST_FIRST1T 1 180 #define VM_FREELIST_FIRST64G 2 181 #define VM_FREELIST_FIRST4G 3 182 #define VM_FREELIST_FIRST1G 4 183 #define VM_FREELIST_FIRST16 5 184 185 #else /* !__x86_64__ */ 186 187 #include <i386/vmparam.h> 188 189 #endif /* __x86_64__ */ 190 191 #endif /* _X86_64_VMPARAM_H_ */ 192
Indexes created Sun Sep 28 12:09:53 GMT 2025