vmparam.h revision 1.43
1 /* $NetBSD: vmparam.h,v 1.43 2017/06/24 13:43:36 joerg 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 * USRSTACK is the top (end) of the user stack. Immediately above the 61 * user stack resides the user structure, which is UPAGES long and contains 62 * the kernel stack. 63 * 64 * Immediately after the user structure is the page table map, and then 65 * kernel address space. 66 */ 67 #define USRSTACK VM_MAXUSER_ADDRESS 68 69 #define USRSTACK32 VM_MAXUSER_ADDRESS32 70 71 /* 72 * Virtual memory related constants, all in bytes 73 */ 74 #define MAXTSIZ (256*1024*1024) /* max text size */ 75 #ifndef DFLDSIZ 76 #define DFLDSIZ (256*1024*1024) /* initial data size limit */ 77 #endif 78 #ifndef MAXDSIZ 79 #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 80 #endif 81 #ifndef DFLSSIZ 82 #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 83 #endif 84 #ifndef MAXSSIZ 85 #define MAXSSIZ (128*1024*1024) /* max stack size */ 86 #endif 87 88 /* 89 * 32bit memory related constants. 90 */ 91 92 #define MAXTSIZ32 (256*1024*1024) 93 #ifndef DFLDSIZ32 94 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 95 #endif 96 #ifndef MAXDSIZ32 97 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 98 #endif 99 #ifndef DFLSSIZ32 100 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 101 #endif 102 #ifndef MAXSSIZ32 103 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 104 #endif 105 106 /* 107 * Size of User Raw I/O map 108 */ 109 #define USRIOSIZE 300 110 111 /* User map constants */ 112 #define VM_MIN_ADDRESS 0 113 #define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE) 114 #define VM_MAXUSER_ADDRESS32 0xfffff000 115 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 116 117 /* 118 * Kernel map constants. 119 * MIN = VA_SIGN_NEG(L4_SLOT_KERN * NBPD_L4) 120 * MAX = MIN + NKL4_MAX_ENTRIES * NBPD_L4 121 */ 122 #ifndef XEN 123 #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 124 #define VM_MAX_KERNEL_ADDRESS 0xffffa00000000000 125 #else 126 #define VM_MIN_KERNEL_ADDRESS 0xffffa00000000000 127 #define VM_MAX_KERNEL_ADDRESS 0xffffc00000000000 128 #endif 129 130 /* 131 * The address to which unspecified mapping requests default 132 */ 133 #ifdef _KERNEL_OPT 134 #include "opt_uvm.h" 135 #endif 136 #define __USE_TOPDOWN_VM 137 138 #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ 139 round_page((vaddr_t)(da) + (vsize_t)maxdmap) 140 141 #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ 142 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size) 143 #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ 144 round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) 145 146 /* virtual sizes (bytes) for various kernel submaps */ 147 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 148 149 #define VM_PHYSSEG_MAX 32 /* 1 "hole" + 31 free lists */ 150 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 151 152 #define VM_NFREELIST 6 153 #define VM_FREELIST_DEFAULT 0 154 #define VM_FREELIST_FIRST1T 1 155 #define VM_FREELIST_FIRST64G 2 156 #define VM_FREELIST_FIRST4G 3 157 #define VM_FREELIST_FIRST1G 4 158 #define VM_FREELIST_FIRST16 5 159 160 #else /* !__x86_64__ */ 161 162 #include <i386/vmparam.h> 163 164 #endif /* __x86_64__ */ 165 166 #endif /* _X86_64_VMPARAM_H_ */ 167
Indexes created Mon Sep 29 21:09:56 GMT 2025