1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*-
* Copyright (c) 2011 NetApp, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VMX_H_
#define _VMX_H_
#include "vmcs.h"
#define GUEST_MSR_MAX_ENTRIES 64 /* arbitrary */
struct vmxctx {
register_t tmpstk[32]; /* vmx_return() stack */
register_t tmpstktop;
register_t guest_rdi; /* Guest state */
register_t guest_rsi;
register_t guest_rdx;
register_t guest_rcx;
register_t guest_r8;
register_t guest_r9;
register_t guest_rax;
register_t guest_rbx;
register_t guest_rbp;
register_t guest_r10;
register_t guest_r11;
register_t guest_r12;
register_t guest_r13;
register_t guest_r14;
register_t guest_r15;
register_t guest_cr2;
register_t host_r15; /* Host state */
register_t host_r14;
register_t host_r13;
register_t host_r12;
register_t host_rbp;
register_t host_rsp;
register_t host_rbx;
register_t host_rip;
/*
* XXX todo debug registers and fpu state
*/
int launched; /* vmcs launch state */
int launch_error;
};
struct vmxcap {
int set;
uint32_t proc_ctls;
};
struct vmxstate {
int lastcpu; /* host cpu that this 'vcpu' last ran on */
uint16_t vpid;
};
/* virtual machine softc */
struct vmx {
pml4_entry_t pml4ept[NPML4EPG];
struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */
char msr_bitmap[PAGE_SIZE];
struct msr_entry guest_msrs[VM_MAXCPU][GUEST_MSR_MAX_ENTRIES];
struct vmxctx ctx[VM_MAXCPU];
struct vmxcap cap[VM_MAXCPU];
struct vmxstate state[VM_MAXCPU];
struct vm *vm;
};
CTASSERT((offsetof(struct vmx, pml4ept) & PAGE_MASK) == 0);
CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0);
CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0);
CTASSERT((offsetof(struct vmx, guest_msrs) & 15) == 0);
#define VMX_RETURN_DIRECT 0
#define VMX_RETURN_LONGJMP 1
#define VMX_RETURN_VMRESUME 2
#define VMX_RETURN_VMLAUNCH 3
#define VMX_RETURN_AST 4
/*
* vmx_setjmp() returns:
* - 0 when it returns directly
* - 1 when it returns from vmx_longjmp
* - 2 when it returns from vmx_resume (which would only be in the error case)
* - 3 when it returns from vmx_launch (which would only be in the error case)
* - 4 when it returns from vmx_resume or vmx_launch because of AST pending
*/
int vmx_setjmp(struct vmxctx *ctx);
void vmx_longjmp(void); /* returns via vmx_setjmp */
void vmx_launch(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */
void vmx_resume(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */
u_long vmx_fix_cr0(u_long cr0);
u_long vmx_fix_cr4(u_long cr4);
#endif
|
