/* $NetBSD: vmparam.h,v 1.42.18.1 2023/02/08 16:40:45 martin Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * 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 8.1 (Berkeley) 6/11/93 */ /* * Machine dependent constants for Sun 4U and 4V UltraSPARC */ #ifndef VMPARAM_H #define VMPARAM_H #define __USE_TOPDOWN_VM /* * We use 8K VM pages on the Sun4U. Override the PAGE_* definitions * to be compile-time constants. */ #define PAGE_SHIFT 13 #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 /* * The kernel itself is mapped by the boot loader with 4Mb locked VM pages, * so let's keep 4Mb definitions here as well. */ #define PAGE_SHIFT_4M 22 #define PAGE_SIZE_4M (1UL<