vmm_host.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 NetApp, 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 *
16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/amd64/vmm/vmm_host.h 330897 2018-03-14 03:19:51Z eadler $
29 */
30
31#ifndef	_VMM_HOST_H_
32#define	_VMM_HOST_H_
33
34#ifndef	_KERNEL
35#error "no user-servicable parts inside"
36#endif
37
38struct xsave_limits {
39	int		xsave_enabled;
40	uint64_t	xcr0_allowed;
41	uint32_t	xsave_max_size;
42};
43
44void vmm_host_state_init(void);
45
46uint64_t vmm_get_host_pat(void);
47uint64_t vmm_get_host_efer(void);
48uint64_t vmm_get_host_cr0(void);
49uint64_t vmm_get_host_cr4(void);
50uint64_t vmm_get_host_xcr0(void);
51uint64_t vmm_get_host_datasel(void);
52uint64_t vmm_get_host_codesel(void);
53uint64_t vmm_get_host_tsssel(void);
54uint64_t vmm_get_host_fsbase(void);
55uint64_t vmm_get_host_idtrbase(void);
56const struct xsave_limits *vmm_get_xsave_limits(void);
57
58/*
59 * Inline access to host state that is used on every VM entry
60 */
61static __inline uint64_t
62vmm_get_host_trbase(void)
63{
64
65	return ((uint64_t)PCPU_GET(tssp));
66}
67
68static __inline uint64_t
69vmm_get_host_gdtrbase(void)
70{
71
72	return ((uint64_t)&gdt[NGDT * curcpu]);
73}
74
75struct pcpu;
76extern struct pcpu __pcpu[];
77
78static __inline uint64_t
79vmm_get_host_gsbase(void)
80{
81
82	return ((uint64_t)&__pcpu[curcpu]);
83}
84
85#endif
86