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Annotation of sys/arch/amd64/include/vmparam.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: vmparam.h,v 1.7 2007/05/15 16:38:33 art Exp $ */
        !             2: /*     $NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1990 The Regents of the University of California.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * This code is derived from software contributed to Berkeley by
        !             9:  * William Jolitz.
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. Neither the name of the University nor the names of its contributors
        !            20:  *    may be used to endorse or promote products derived from this software
        !            21:  *    without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            33:  * SUCH DAMAGE.
        !            34:  *
        !            35:  *     @(#)vmparam.h   5.9 (Berkeley) 5/12/91
        !            36:  */
        !            37:
        !            38: #ifndef _VMPARAM_H_
        !            39: #define _VMPARAM_H_
        !            40:
        !            41: /*
        !            42:  * Machine dependent constants for amd64.
        !            43:  */
        !            44:
        !            45: /*
        !            46:  * USRSTACK is the top (end) of the user stack. Immediately above the
        !            47:  * user stack resides the user structure, which is UPAGES long and contains
        !            48:  * the kernel stack.
        !            49:  *
        !            50:  * Immediately after the user structure is the page table map, and then
        !            51:  * kernel address space.
        !            52:  */
        !            53: #define        USRSTACK        VM_MAXUSER_ADDRESS
        !            54:
        !            55: /*
        !            56:  * Virtual memory related constants, all in bytes
        !            57:  */
        !            58: #define        MAXTSIZ         (64*1024*1024)          /* max text size */
        !            59: #ifndef DFLDSIZ
        !            60: #define        DFLDSIZ         (128*1024*1024)         /* initial data size limit */
        !            61: #endif
        !            62: #ifndef MAXDSIZ
        !            63: #define        MAXDSIZ         (1*1024*1024*1024)      /* max data size */
        !            64: #endif
        !            65: #ifndef        DFLSSIZ
        !            66: #define        DFLSSIZ         (2*1024*1024)           /* initial stack size limit */
        !            67: #endif
        !            68: #ifndef        MAXSSIZ
        !            69: #define        MAXSSIZ         (32*1024*1024)          /* max stack size */
        !            70: #endif
        !            71:
        !            72: #define STACKGAP_RANDOM        256*1024
        !            73:
        !            74: /*
        !            75:  * Size of shared memory map
        !            76:  */
        !            77: #ifndef SHMMAXPGS
        !            78: #define SHMMAXPGS      8192
        !            79: #endif
        !            80:
        !            81: /*
        !            82:  * Size of User Raw I/O map
        !            83:  */
        !            84: #define        USRIOSIZE       300
        !            85:
        !            86: /*
        !            87:  * Mach derived constants
        !            88:  */
        !            89:
        !            90: /* user/kernel map constants */
        !            91: #define VM_MIN_ADDRESS         0
        !            92: #define VM_MAXUSER_ADDRESS     0x00007f7fffffc000
        !            93: #define VM_MAX_ADDRESS         0x00007fbfdfeff000
        !            94: #define VM_MIN_KERNEL_ADDRESS  0xffff800000000000
        !            95: #define VM_MAX_KERNEL_ADDRESS  0xffff800100000000
        !            96:
        !            97: #define VM_MAXUSER_ADDRESS32   0xffffc000
        !            98:
        !            99: /* virtual sizes (bytes) for various kernel submaps */
        !           100: #define VM_PHYS_SIZE           (USRIOSIZE*PAGE_SIZE)
        !           101:
        !           102: #define VM_PHYSSEG_MAX         16      /* actually we could have this many segments */
        !           103: #define VM_PHYSSEG_STRAT       VM_PSTRAT_BIGFIRST
        !           104: #define VM_PHYSSEG_NOADD               /* can't add RAM after vm_mem_init */
        !           105:
        !           106: #define        VM_NFREELIST            2
        !           107: #define        VM_FREELIST_DEFAULT     0
        !           108: #define        VM_FREELIST_FIRST16     1
        !           109:
        !           110: #define __HAVE_VM_PAGE_MD
        !           111: struct pv_entry;
        !           112: struct vm_page_md {
        !           113:        struct pv_entry *pv_list;
        !           114: };
        !           115:
        !           116: #define VM_MDPAGE_INIT(pg) do {                \
        !           117:        (pg)->mdpage.pv_list = NULL;    \
        !           118: } while (0)
        !           119:
        !           120: #endif /* _VMPARAM_H_ */