/* $OpenBSD: vmparam.h,v 1.35 2008/09/06 19:49:05 kettenis Exp $ */ /* * Copyright (c) 1988-1994, The University of Utah and * the Computer Systems Laboratory at the University of Utah (CSL). * All rights reserved. * * Permission to use, copy, modify and distribute this software is hereby * granted provided that (1) source code retains these copyright, permission, * and disclaimer notices, and (2) redistributions including binaries * reproduce the notices in supporting documentation, and (3) all advertising * materials mentioning features or use of this software display the following * acknowledgement: ``This product includes software developed by the * Computer Systems Laboratory at the University of Utah.'' * * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * CSL requests users of this software to return to csl-dist@cs.utah.edu any * improvements that they make and grant CSL redistribution rights. * * Utah $Hdr: vmparam.h 1.16 94/12/16$ */ #ifndef _MACHINE_VMPARAM_H_ #define _MACHINE_VMPARAM_H_ /* * Machine dependent constants for HP PA */ /* * USRTEXT is the start of the user text/data space, while USRSTACK * is the bottm (start) of the user stack. */ #define USRTEXT PAGE_SIZE /* Start of user .text */ #define USRSTACK 0x78000000UL /* Start of user stack */ #define SYSCALLGATE 0xC0000000 /* syscall gateway page */ /* * Virtual memory related constants, all in bytes */ #ifndef MAXTSIZ #define MAXTSIZ (512*1024*1024UL) /* max text size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (16*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1*1024*1024*1024UL) /* max data size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (128*1024*1024UL) /* max stack size */ #endif #define STACKGAP_RANDOM 256*1024 #ifndef USRIOSIZE #define USRIOSIZE ((2*HPPA_PGALIAS)/PAGE_SIZE) /* 8mb */ #endif /* * PTEs for system V style shared memory. * This is basically slop for kmempt which we actually allocate (malloc) from. */ #ifndef SHMMAXPGS #define SHMMAXPGS 8192 /* 32mb */ #endif /* user/kernel map constants */ #define VM_MIN_ADDRESS ((vaddr_t)0) #define VM_MAXUSER_ADDRESS ((vaddr_t)0xc0000000) #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0001000) #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xef000000) /* use a small range for PIE to minimize mmap pressure */ #define VM_PIE_MIN_ADDR PAGE_SIZE #define VM_PIE_MAX_ADDR 0x40000UL /* virtual sizes (bytes) for various kernel submaps */ #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) #define VM_PHYSSEG_MAX 1 /* this many physmem segments */ #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM #define VM_PHYSSEG_NOADD /* XXX until uvm code is fixed */ #define VM_NFREELIST 2 #define VM_FREELIST_DEFAULT 0 #define VM_FREELIST_ARCH 1 #if defined(_KERNEL) && !defined(_LOCORE) #define __HAVE_VM_PAGE_MD struct pv_entry; struct vm_page_md { struct simplelock pvh_lock; /* locks every pv on this list */ struct pv_entry *pvh_list; /* head of list (locked by pvh_lock) */ u_int pvh_attrs; /* to preserve ref/mod */ }; #define VM_MDPAGE_INIT(pg) do { \ simple_lock_init(&(pg)->mdpage.pvh_lock); \ (pg)->mdpage.pvh_list = NULL; \ (pg)->mdpage.pvh_attrs = 0; \ } while (0) #endif #endif /* _MACHINE_VMPARAM_H_ */