vmm_host.h revision 331722 
1/*-
2 * Copyright (c) 2012 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/amd64/vmm/vmm_host.h 331722 2018-03-29 02:50:57Z eadler $
27 */
28
29#ifndef	_VMM_HOST_H_
30#define	_VMM_HOST_H_
31
32#ifndef	_KERNEL
33#error "no user-servicable parts inside"
34#endif
35
36struct xsave_limits {
37	int		xsave_enabled;
38	uint64_t	xcr0_allowed;
39	uint32_t	xsave_max_size;
40};
41
42void vmm_host_state_init(void);
43
44uint64_t vmm_get_host_pat(void);
45uint64_t vmm_get_host_efer(void);
46uint64_t vmm_get_host_cr0(void);
47uint64_t vmm_get_host_cr4(void);
48uint64_t vmm_get_host_xcr0(void);
49uint64_t vmm_get_host_datasel(void);
50uint64_t vmm_get_host_codesel(void);
51uint64_t vmm_get_host_tsssel(void);
52uint64_t vmm_get_host_fsbase(void);
53uint64_t vmm_get_host_idtrbase(void);
54const struct xsave_limits *vmm_get_xsave_limits(void);
55
56/*
57 * Inline access to host state that is used on every VM entry
58 */
59static __inline uint64_t
60vmm_get_host_trbase(void)
61{
62
63	return ((uint64_t)PCPU_GET(tssp));
64}
65
66static __inline uint64_t
67vmm_get_host_gdtrbase(void)
68{
69
70	return ((uint64_t)&gdt[NGDT * curcpu]);
71}
72
73struct pcpu;
74extern struct pcpu __pcpu[];
75
76static __inline uint64_t
77vmm_get_host_gsbase(void)
78{
79
80	return ((uint64_t)&__pcpu[curcpu]);
81}
82
83#endif
84