1/* $NetBSD$ */ 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/tree.h> 43#include <sys/mutex.h> 44#ifdef _KERNEL_OPT 45#include "opt_xen.h" 46#endif 47 48/* 49 * Machine dependent constants for 386. 50 */ 51 52/* 53 * Page size on the amd64 s not variable in the traditional sense. 54 * We override the PAGE_* definitions to compile-time constants. 55 */ 56#define PAGE_SHIFT 12 57#define PAGE_SIZE (1 << PAGE_SHIFT) 58#define PAGE_MASK (PAGE_SIZE - 1) 59 60/* 61 * USRSTACK is the top (end) of the user stack. Immediately above the 62 * user stack resides the user structure, which is UPAGES long and contains 63 * the kernel stack. 64 * 65 * Immediately after the user structure is the page table map, and then 66 * kernel address space. 67 */ 68#define USRSTACK VM_MAXUSER_ADDRESS 69 70#define USRSTACK32 VM_MAXUSER_ADDRESS32 71 72/* 73 * Virtual memory related constants, all in bytes 74 */ 75#define MAXTSIZ (128*1024*1024) /* max text size */ 76#ifndef DFLDSIZ 77#define DFLDSIZ (256*1024*1024) /* initial data size limit */ 78#endif 79#ifndef MAXDSIZ 80#define MAXDSIZ (8L*1024*1024*1024) /* max data size */ 81#endif 82#ifndef DFLSSIZ 83#define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 84#endif 85#ifndef MAXSSIZ 86#define MAXSSIZ (128*1024*1024) /* max stack size */ 87#endif 88 89/* 90 * 32bit memory related constants. 91 */ 92 93#define MAXTSIZ32 (128*1024*1024) 94#ifndef DFLDSIZ32 95#define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ 96#endif 97#ifndef MAXDSIZ32 98#define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 99#endif 100#ifndef DFLSSIZ32 101#define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ 102#endif 103#ifndef MAXSSIZ32 104#define MAXSSIZ32 (64*1024*1024) /* max stack size */ 105#endif 106 107/* 108 * Size of User Raw I/O map 109 */ 110#define USRIOSIZE 300 111 112/* 113 * Mach derived constants 114 */ 115 116/* user/kernel map constants */ 117#define VM_MIN_ADDRESS 0 118#define VM_MAXUSER_ADDRESS 0x00007f8000000000 119#define VM_MAX_ADDRESS 0x00007fbfdfeff000 120#ifndef XEN 121#define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 122#else /* XEN */ 123#define VM_MIN_KERNEL_ADDRESS 0xffffa00000000000 124#endif 125#define VM_MAX_KERNEL_ADDRESS 0xfffffe8000000000 126 127#define VM_MAXUSER_ADDRESS32 0xfffff000 128 129/* 130 * The address to which unspecified mapping requests default 131 */ 132#ifdef _KERNEL_OPT 133#include "opt_uvm.h" 134#endif 135#define __USE_TOPDOWN_VM 136#define VM_DEFAULT_ADDRESS(da, sz) \ 137 trunc_page(USRSTACK - MAXSSIZ - (sz)) 138#define VM_DEFAULT_ADDRESS32(da, sz) \ 139 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz)) 140 141/* 142 * XXXfvdl we have plenty of KVM now, remove this. 143 */ 144#ifndef VM_MAX_KERNEL_BUF 145#define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) 146#endif 147 148/* virtual sizes (bytes) for various kernel submaps */ 149#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 150 151#define VM_PHYSSEG_MAX 16 /* 1 "hole" + 15 free lists */ 152#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 153 154#define VM_NFREELIST 3 155#define VM_FREELIST_DEFAULT 0 156#define VM_FREELIST_FIRST4G 1 157#define VM_FREELIST_FIRST16 2 158 159#else /* !__x86_64__ */ 160 161#include <i386/vmparam.h> 162 163#endif /* __x86_64__ */ 164 165#endif /* _X86_64_VMPARAM_H_ */ 166