vmparam.h revision 1.46
1 /* $NetBSD: vmparam.h,v 1.46 2018/08/12 08:17:50 maxv 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 * USRSTACK is the top (end) of the user stack. Immediately above the 67 * user stack resides the user structure, which is UPAGES long and contains 68 * the kernel stack. 69 * 70 * Immediately after the user structure is the page table map, and then 71 * kernel address space. 72 */ 73 #define USRSTACK VM_MAXUSER_ADDRESS 74 75 #define USRSTACK32 VM_MAXUSER_ADDRESS32 76 77 /* 78 * Virtual memory related constants, all in bytes 79 */ 80 #define MAXTSIZ (256*1024*1024) /* max text size */ 81 #ifndef DFLDSIZ 82 #define DFLDSIZ (256*1024*1024) /* initial data size limit */ 83 #endif 84 #ifndef MAXDSIZ 85 #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 86 #endif 87 #ifndef DFLSSIZ 88 #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 89 #endif 90 #ifndef MAXSSIZ 91 #define MAXSSIZ (128*1024*1024) /* max stack size */ 92 #endif 93 94 /* 95 * 32bit memory related constants. 96 */ 97 98 #define MAXTSIZ32 (256*1024*1024) 99 #ifndef DFLDSIZ32 100 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 101 #endif 102 #ifndef MAXDSIZ32 103 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 104 #endif 105 #ifndef DFLSSIZ32 106 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 107 #endif 108 #ifndef MAXSSIZ32 109 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 110 #endif 111 112 /* 113 * Size of User Raw I/O map 114 */ 115 #define USRIOSIZE 300 116 117 /* User map constants */ 118 #define VM_MIN_ADDRESS 0 119 #define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE) 120 #define VM_MAXUSER_ADDRESS32 0xfffff000 121 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 122 123 /* 124 * Kernel map constants. 125 * MIN = VA_SIGN_NEG(L4_SLOT_KERN * NBPD_L4) 126 * MAX = MIN + NKL4_MAX_ENTRIES * NBPD_L4 127 */ 128 #ifndef XEN 129 #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffff800000000000 130 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 131 extern vaddr_t vm_min_kernel_address; 132 extern vaddr_t vm_max_kernel_address; 133 #define VM_MIN_KERNEL_ADDRESS vm_min_kernel_address 134 #define VM_MAX_KERNEL_ADDRESS vm_max_kernel_address 135 #else 136 #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 137 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffc00000000000 138 #define VM_MIN_KERNEL_ADDRESS VM_MIN_KERNEL_ADDRESS_DEFAULT 139 #define VM_MAX_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS_DEFAULT 140 #endif 141 142 /* 143 * The address to which unspecified mapping requests default 144 */ 145 #ifdef _KERNEL_OPT 146 #include "opt_uvm.h" 147 #endif 148 #define __USE_TOPDOWN_VM 149 150 #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ 151 round_page((vaddr_t)(da) + (vsize_t)maxdmap) 152 153 #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ 154 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size) 155 #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ 156 round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) 157 158 /* virtual sizes (bytes) for various kernel submaps */ 159 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 160 161 #define VM_PHYSSEG_MAX 32 /* 1 "hole" + 31 free lists */ 162 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 163 164 #define VM_NFREELIST 6 165 #define VM_FREELIST_DEFAULT 0 166 #define VM_FREELIST_FIRST1T 1 167 #define VM_FREELIST_FIRST64G 2 168 #define VM_FREELIST_FIRST4G 3 169 #define VM_FREELIST_FIRST1G 4 170 #define VM_FREELIST_FIRST16 5 171 172 #else /* !__x86_64__ */ 173 174 #include <i386/vmparam.h> 175 176 #endif /* __x86_64__ */ 177 178 #endif /* _X86_64_VMPARAM_H_ */ 179
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