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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
|
/*
* vmcs.h: VMCS definitions for creation of APs mini-guests
*
* Copyright (c) 2003-2009, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE
* COPYRIGHT OWNER 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.
*
*/
#ifndef __TXT_VMCS_H__
#define __TXT_VMCS_H__
struct vmcs_struct {
uint32_t vmcs_revision_id;
unsigned char data[0]; /* vmcs size is read from MSR */
};
union vmcs_arbytes {
struct arbyte_fields {
unsigned int seg_type : 4,
s : 1,
dpl : 2,
p : 1,
reserved0 : 4,
avl : 1,
reserved1 : 1,
default_ops_size: 1,
g : 1,
null_bit : 1,
reserved2 : 15;
} fields;
unsigned int bytes;
};
#define CPU_BASED_HLT_EXITING 0x00000080
#define CPU_BASED_INVDPG_EXITING 0x00000200
#define CPU_BASED_MWAIT_EXITING 0x00000400
#define PIN_BASED_EXT_INTR_MASK 0x00000001
#define PIN_BASED_NMI_EXITING 0x00000008
#define VM_EXIT_IA32E_MODE 0x00000200
#define VM_EXIT_ACK_INTR_ON_EXIT 0x00008000
#define VM_ENTRY_IA32E_MODE 0x00000200
#define VM_ENTRY_SMM 0x00000400
#define VM_ENTRY_DEACT_DUAL_MONITOR 0x00000800
/* VMCS Encordings */
enum vmcs_field {
GUEST_ES_SELECTOR = 0x00000800,
GUEST_CS_SELECTOR = 0x00000802,
GUEST_SS_SELECTOR = 0x00000804,
GUEST_DS_SELECTOR = 0x00000806,
GUEST_FS_SELECTOR = 0x00000808,
GUEST_GS_SELECTOR = 0x0000080a,
GUEST_LDTR_SELECTOR = 0x0000080c,
GUEST_TR_SELECTOR = 0x0000080e,
HOST_ES_SELECTOR = 0x00000c00,
HOST_CS_SELECTOR = 0x00000c02,
HOST_SS_SELECTOR = 0x00000c04,
HOST_DS_SELECTOR = 0x00000c06,
HOST_FS_SELECTOR = 0x00000c08,
HOST_GS_SELECTOR = 0x00000c0a,
HOST_TR_SELECTOR = 0x00000c0c,
IO_BITMAP_A = 0x00002000,
IO_BITMAP_A_HIGH = 0x00002001,
IO_BITMAP_B = 0x00002002,
IO_BITMAP_B_HIGH = 0x00002003,
VM_EXIT_MSR_STORE_ADDR = 0x00002006,
VM_EXIT_MSR_STORE_ADDR_HIGH = 0x00002007,
VM_EXIT_MSR_LOAD_ADDR = 0x00002008,
VM_EXIT_MSR_LOAD_ADDR_HIGH = 0x00002009,
VM_ENTRY_MSR_LOAD_ADDR = 0x0000200a,
VM_ENTRY_MSR_LOAD_ADDR_HIGH = 0x0000200b,
TSC_OFFSET = 0x00002010,
TSC_OFFSET_HIGH = 0x00002011,
VIRTUAL_APIC_PAGE_ADDR = 0x00002012,
VIRTUAL_APIC_PAGE_ADDR_HIGH = 0x00002013,
VMCS_LINK_POINTER = 0x00002800,
VMCS_LINK_POINTER_HIGH = 0x00002801,
GUEST_IA32_DEBUGCTL = 0x00002802,
GUEST_IA32_DEBUGCTL_HIGH = 0x00002803,
PIN_BASED_VM_EXEC_CONTROL = 0x00004000,
CPU_BASED_VM_EXEC_CONTROL = 0x00004002,
EXCEPTION_BITMAP = 0x00004004,
PAGE_FAULT_ERROR_CODE_MASK = 0x00004006,
PAGE_FAULT_ERROR_CODE_MATCH = 0x00004008,
CR3_TARGET_COUNT = 0x0000400a,
VM_EXIT_CONTROLS = 0x0000400c,
VM_EXIT_MSR_STORE_COUNT = 0x0000400e,
VM_EXIT_MSR_LOAD_COUNT = 0x00004010,
VM_ENTRY_CONTROLS = 0x00004012,
VM_ENTRY_MSR_LOAD_COUNT = 0x00004014,
VM_ENTRY_INTR_INFO_FIELD = 0x00004016,
VM_ENTRY_EXCEPTION_ERROR_CODE = 0x00004018,
VM_ENTRY_INSTRUCTION_LEN = 0x0000401a,
TPR_THRESHOLD = 0x0000401c,
SECONDARY_VM_EXEC_CONTROL = 0x0000401e,
VM_INSTRUCTION_ERROR = 0x00004400,
VM_EXIT_REASON = 0x00004402,
VM_EXIT_INTR_INFO = 0x00004404,
VM_EXIT_INTR_ERROR_CODE = 0x00004406,
IDT_VECTORING_INFO_FIELD = 0x00004408,
IDT_VECTORING_ERROR_CODE = 0x0000440a,
VM_EXIT_INSTRUCTION_LEN = 0x0000440c,
VMX_INSTRUCTION_INFO = 0x0000440e,
GUEST_ES_LIMIT = 0x00004800,
GUEST_CS_LIMIT = 0x00004802,
GUEST_SS_LIMIT = 0x00004804,
GUEST_DS_LIMIT = 0x00004806,
GUEST_FS_LIMIT = 0x00004808,
GUEST_GS_LIMIT = 0x0000480a,
GUEST_LDTR_LIMIT = 0x0000480c,
GUEST_TR_LIMIT = 0x0000480e,
GUEST_GDTR_LIMIT = 0x00004810,
GUEST_IDTR_LIMIT = 0x00004812,
GUEST_ES_AR_BYTES = 0x00004814,
GUEST_CS_AR_BYTES = 0x00004816,
GUEST_SS_AR_BYTES = 0x00004818,
GUEST_DS_AR_BYTES = 0x0000481a,
GUEST_FS_AR_BYTES = 0x0000481c,
GUEST_GS_AR_BYTES = 0x0000481e,
GUEST_LDTR_AR_BYTES = 0x00004820,
GUEST_TR_AR_BYTES = 0x00004822,
GUEST_INTERRUPTIBILITY_INFO = 0x00004824,
GUEST_ACTIVITY_STATE = 0x00004826,
GUEST_SYSENTER_CS = 0x0000482A,
HOST_IA32_SYSENTER_CS = 0x00004c00,
CR0_GUEST_HOST_MASK = 0x00006000,
CR4_GUEST_HOST_MASK = 0x00006002,
CR0_READ_SHADOW = 0x00006004,
CR4_READ_SHADOW = 0x00006006,
CR3_TARGET_VALUE0 = 0x00006008,
CR3_TARGET_VALUE1 = 0x0000600a,
CR3_TARGET_VALUE2 = 0x0000600c,
CR3_TARGET_VALUE3 = 0x0000600e,
EXIT_QUALIFICATION = 0x00006400,
GUEST_LINEAR_ADDRESS = 0x0000640a,
GUEST_CR0 = 0x00006800,
GUEST_CR3 = 0x00006802,
GUEST_CR4 = 0x00006804,
GUEST_ES_BASE = 0x00006806,
GUEST_CS_BASE = 0x00006808,
GUEST_SS_BASE = 0x0000680a,
GUEST_DS_BASE = 0x0000680c,
GUEST_FS_BASE = 0x0000680e,
GUEST_GS_BASE = 0x00006810,
GUEST_LDTR_BASE = 0x00006812,
GUEST_TR_BASE = 0x00006814,
GUEST_GDTR_BASE = 0x00006816,
GUEST_IDTR_BASE = 0x00006818,
GUEST_DR7 = 0x0000681a,
GUEST_RSP = 0x0000681c,
GUEST_RIP = 0x0000681e,
GUEST_RFLAGS = 0x00006820,
GUEST_PENDING_DBG_EXCEPTIONS = 0x00006822,
GUEST_SYSENTER_ESP = 0x00006824,
GUEST_SYSENTER_EIP = 0x00006826,
HOST_CR0 = 0x00006c00,
HOST_CR3 = 0x00006c02,
HOST_CR4 = 0x00006c04,
HOST_FS_BASE = 0x00006c06,
HOST_GS_BASE = 0x00006c08,
HOST_TR_BASE = 0x00006c0a,
HOST_GDTR_BASE = 0x00006c0c,
HOST_IDTR_BASE = 0x00006c0e,
HOST_IA32_SYSENTER_ESP = 0x00006c10,
HOST_IA32_SYSENTER_EIP = 0x00006c12,
HOST_RSP = 0x00006c14,
HOST_RIP = 0x00006c16,
};
enum guest_activity_state {
GUEST_STATE_ACTIVE = 0,
GUEST_STATE_HALT = 1,
GUEST_STATE_SHUTDOWN = 2,
GUEST_STATE_WAIT_SIPI = 3,
};
#define VMCALL_OPCODE ".byte 0x0f,0x01,0xc1\n"
#define VMCLEAR_OPCODE ".byte 0x66,0x0f,0xc7\n" /* reg/opcode: /6 */
#define VMLAUNCH_OPCODE ".byte 0x0f,0x01,0xc2\n"
#define VMPTRLD_OPCODE ".byte 0x0f,0xc7\n" /* reg/opcode: /6 */
#define VMPTRST_OPCODE ".byte 0x0f,0xc7\n" /* reg/opcode: /7 */
#define VMREAD_OPCODE ".byte 0x0f,0x78\n"
#define VMRESUME_OPCODE ".byte 0x0f,0x01,0xc3\n"
#define VMWRITE_OPCODE ".byte 0x0f,0x79\n"
#define VMXOFF_OPCODE ".byte 0x0f,0x01,0xc4\n"
#define VMXON_OPCODE ".byte 0xf3,0x0f,0xc7\n"
#define MODRM_EAX_06 ".byte 0x30\n" /* [EAX], with reg/opcode: /6 */
#define MODRM_EAX_07 ".byte 0x38\n" /* [EAX], with reg/opcode: /7 */
#define MODRM_EAX_ECX ".byte 0xc1\n" /* [EAX], [ECX] */
/*
* Exit Reasons
*/
#define VMX_EXIT_REASONS_FAILED_VMENTRY 0x80000000
#define EXIT_REASON_INIT 3
#define EXIT_REASON_SIPI 4
#define EXIT_REASON_VMCALL 18
#define EXIT_REASON_INVALID_GUEST_STATE 33
#define EXIT_REASON_MSR_LOADING 34
#define EXIT_REASON_MACHINE_CHECK 41
static inline void __vmptrld(uint64_t addr)
{
/* TBD: do not crash on failure */
__asm__ __volatile__ ( VMPTRLD_OPCODE
MODRM_EAX_06
/* CF==1 or ZF==1 --> crash (ud2) */
"ja 1f ; ud2 ; 1:\n"
:
: "a" (&addr)
: "memory");
}
static inline void __vmptrst(uint64_t addr)
{
__asm__ __volatile__ ( VMPTRST_OPCODE
MODRM_EAX_07
:
: "a" (&addr)
: "memory");
}
static inline void __vmpclear(uint64_t addr)
{
/* TBD: do not crash on failure */
__asm__ __volatile__ ( VMCLEAR_OPCODE
MODRM_EAX_06
/* CF==1 or ZF==1 --> crash (ud2) */
"ja 1f ; ud2 ; 1:\n"
:
: "a" (&addr)
: "memory");
}
static inline unsigned long __vmread(unsigned long field)
{
unsigned long ecx;
/* TBD: do not crash on failure */
__asm__ __volatile__ ( VMREAD_OPCODE
MODRM_EAX_ECX
/* CF==1 or ZF==1 --> crash (ud2) */
"ja 1f ; ud2 ; 1:\n"
: "=c" (ecx)
: "a" (field)
: "memory");
return ecx;
}
static inline void __vmwrite(unsigned long field, unsigned long value)
{
/* TBD: do not crash on failure */
__asm__ __volatile__ ( VMWRITE_OPCODE
MODRM_EAX_ECX
/* CF==1 or ZF==1 --> crash (ud2) */
"ja 1f ; ud2 ; 1:\n"
:
: "a" (field) , "c" (value)
: "memory");
}
static inline void __vmlaunch (void)
{
__asm__ __volatile__ ( VMLAUNCH_OPCODE
::: "memory");
}
static inline void __vmresume (void)
{
__asm__ __volatile__ ( VMRESUME_OPCODE
::: "memory");
}
static inline void __vmxoff (void)
{
__asm__ __volatile__ ( VMXOFF_OPCODE
::: "memory");
}
static inline int __vmxon (uint64_t addr)
{
int rc;
__asm__ __volatile__ ( VMXON_OPCODE
MODRM_EAX_06
/* CF==1 or ZF==1 --> rc = -1 */
"setna %b0 ; neg %0"
: "=q" (rc)
: "0" (0), "a" (&addr)
: "memory");
return rc;
}
void handle_init_sipi_sipi(unsigned int cpuid);
void force_aps_exit(void);
void init_vmcs_addrs(void);
struct mutex ap_lock;
#endif /* __TXT_VMCS_H__ */
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
|
