/* $NetBSD: vmparam.h,v 1.55 2022/08/20 23:48:50 riastradh Exp $ */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 */ #ifndef _X86_64_VMPARAM_H_ #define _X86_64_VMPARAM_H_ #ifdef __x86_64__ #include <sys/mutex.h> #ifdef _KERNEL_OPT #include "opt_xen.h" #endif /* * Machine dependent constants for 386. */ /* * Page size on the amd64 s not variable in the traditional sense. * We override the PAGE_* definitions to compile-time constants. */ #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) /* * Default pager_map of 16MB is awfully small. There is plenty * of VA so use it. */ #define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024) /* * Defaults for Unified Buffer Cache parameters. */ #ifndef UBC_WINSHIFT #define UBC_WINSHIFT 16 /* 64kB */ #endif #ifndef UBC_NWINS #define UBC_NWINS 4096 /* 256MB */ #endif /* * USRSTACK is the top (end) of the user stack. Immediately above the * user stack resides the user structure, which is UPAGES long and contains * the kernel stack. * * Immediately after the user structure is the page table map, and then * kernel address space. */ #define USRSTACK VM_MAXUSER_ADDRESS #define USRSTACK32 VM_MAXUSER_ADDRESS32 /* * Virtual memory related constants, all in bytes */ #define MAXTSIZ (8L*1024*1024*1024) /* max text size */ #ifndef DFLDSIZ #define DFLDSIZ (256*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (128*1024*1024) /* max stack size */ #endif /* * 32bit memory related constants. */ #ifndef DFLDSIZ32 #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ32 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ32 #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ32 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ #endif /* * Size of User Raw I/O map */ #define USRIOSIZE 300 /* User map constants */ #define VM_MIN_ADDRESS 0 #define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE) #define VM_MAXUSER_ADDRESS32 0xfffff000 #define VM_MAX_ADDRESS 0x00007fbfdfeff000 /* * Kernel map constants. * MIN = VA_SIGN_NEG(L4_SLOT_KERN * NBPD_L4) * MAX = MIN + NKL4_MAX_ENTRIES * NBPD_L4 */ #ifndef XENPV #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffff800000000000 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 #else #define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000 #define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffc00000000000 #endif #if defined(_KMEMUSER) || defined(_KERNEL) extern vaddr_t vm_min_kernel_address; extern vaddr_t vm_max_kernel_address; #define VM_MIN_KERNEL_ADDRESS vm_min_kernel_address #define VM_MAX_KERNEL_ADDRESS vm_max_kernel_address #endif #define PDP_SIZE 1 /* * The address to which unspecified mapping requests default */ #ifdef _KERNEL_OPT #include "opt_uvm.h" #endif #define __USE_TOPDOWN_VM #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ round_page((vaddr_t)(da) + (vsize_t)maxdmap) #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size) #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) /* virtual sizes (bytes) for various kernel submaps */ #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) #define VM_PHYSSEG_MAX 64 /* 1 "hole" + 63 free lists */ #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST #define VM_NFREELIST 6 #define VM_FREELIST_DEFAULT 0 #define VM_FREELIST_FIRST1T 1 #define VM_FREELIST_FIRST64G 2 #define VM_FREELIST_FIRST4G 3 #define VM_FREELIST_FIRST1G 4 #define VM_FREELIST_FIRST16 5 #else /* !__x86_64__ */ #include <i386/vmparam.h> #endif /* __x86_64__ */ #endif /* _X86_64_VMPARAM_H_ */
