1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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
29 #ifndef _VMM_HOST_H_
30 #define _VMM_HOST_H_
31
32 #ifndef _KERNEL
33 #error "no user-serviceable parts inside"
34 #endif
35
36 struct xsave_limits {
37 int xsave_enabled;
38 uint64_t xcr0_allowed;
39 uint32_t xsave_max_size;
40 };
41
42 void vmm_host_state_init(void);
43
44 uint64_t vmm_get_host_pat(void);
45 uint64_t vmm_get_host_efer(void);
46 uint64_t vmm_get_host_cr0(void);
47 uint64_t vmm_get_host_cr4(void);
48 uint64_t vmm_get_host_xcr0(void);
49 uint64_t vmm_get_host_datasel(void);
50 uint64_t vmm_get_host_codesel(void);
51 uint64_t vmm_get_host_tsssel(void);
52 uint64_t vmm_get_host_fsbase(void);
53 uint64_t vmm_get_host_idtrbase(void);
54 const struct xsave_limits *vmm_get_xsave_limits(void);
55
56 /*
57 * Inline access to host state that is used on every VM entry
58 */
59 static __inline uint64_t
vmm_get_host_trbase(void)60 vmm_get_host_trbase(void)
61 {
62
63 return ((uint64_t)PCPU_GET(tssp));
64 }
65
66 static __inline uint64_t
vmm_get_host_gdtrbase(void)67 vmm_get_host_gdtrbase(void)
68 {
69
70 return ((uint64_t)*PCPU_PTR(gdt));
71 }
72
73 static __inline uint64_t
vmm_get_host_gsbase(void)74 vmm_get_host_gsbase(void)
75 {
76
77 return ((uint64_t)get_pcpu());
78 }
79
80 #endif
81