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vmparam.h revision 1.26 
      1 /*	$NetBSD: vmparam.h,v 1.26 2000/11/14 19:34:26 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *        This product includes software developed by the NetBSD
     18  *        Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * We use 8K pages on both the sun3 and sun3x.  Override PAGE_*
     38  * to be compile-time constants.
     39  */
     40 #define	PAGE_SHIFT	13
     41 #define	PAGE_SIZE	(1 << PAGE_SHIFT)
     42 #define	PAGE_MASK	(PAGE_SIZE - 1)
     43 
     44 #ifdef	_SUN3_
     45 #include <machine/vmparam3.h>
     46 #endif	/* SUN3 */
     47 #ifdef	_SUN3X_
     48 #include <machine/vmparam3x.h>
     49 #endif	/* SUN3X */
     50 #ifdef	_LKM
     51 #define	USRSTACK KERNBASE
     52 extern	char KERNBASE[];
     53 #endif	/* _LKM */
     54 
     55 /* This is needed by some LKMs. */
     56 #define VM_PHYSSEG_MAX		4
     57 struct pmap_physseg {
     58 	/* NULL */
     59 };
     60 
     61 /*
     62  * The time for a process to be blocked before being very swappable.
     63  * This is a number of seconds which the system takes as being a non-trivial
     64  * amount of real time.  You probably shouldn't change this;
     65  * it is used in subtle ways (fractions and multiples of it are, that is, like
     66  * half of a ``long time'', almost a long time, etc.)
     67  * It is related to human patience and other factors which don't really
     68  * change over time.
     69  */
     70 #define	MAXSLP 		20
     71