2 * Copyright (c) 2006 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/sys/vkernel.h,v 1.3 2006/09/13 21:05:22 dillon Exp $
37 #ifndef _SYS_VKERNEL_H_
38 #define _SYS_VKERNEL_H_
40 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
42 * KERNEL ONLY DEFINITIONS
46 #include <sys/param.h>
49 #include <sys/queue.h>
54 #ifndef _SYS_SPINLOCK_H_
55 #include <sys/spinlock.h>
58 struct vmspace_rb_tree;
60 RB_PROTOTYPE(vmspace_rb_tree, vmspace_entry, rb_entry, rb_vmspace_compare);
63 RB_HEAD(vmspace_rb_tree, vmspace_entry) vk_root;
64 struct vmspace *vk_orig_vmspace; /* vkernel's vmspace */
65 struct vmspace_entry *vk_vvmspace; /* selected vmspace */
66 struct spinlock vk_spin;
70 struct vmspace_entry {
72 struct vmspace *vmspace;
73 RB_ENTRY(vmspace_entry) rb_entry;
77 void vkernel_hold(struct vkernel *vk);
78 void vkernel_drop(struct vkernel *vk);
83 * USER ONLY DEFINITIONS
86 #ifndef _MACHINE_PARAM_H_
87 #include <machine/param.h>
93 * KERNEL AND USER DEFINITIONS
96 typedef u_int32_t vpte_t;
98 #define VPTE_PAGE_ENTRIES (PAGE_SIZE / sizeof(vpte_t))
99 #define VPTE_PAGE_BITS 10
100 #define VPTE_PAGE_MASK ((1 << VPTE_PAGE_BITS) - 1)
102 #define VPTE_V 0x00000001 /* inverted valid bit (TEMPORARY) */
103 #define VPTE_PS 0x00000002