VirtualBox

source: vbox/trunk/include/VBox/hwacc_vmx.h@ 10353

Last change on this file since 10353 was 9457, checked in by vboxsync, 17 years ago

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1/** @file
2 * HWACC/VMX - VMX Structures and Definitions.
3 */
4
5/*
6 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 *
25 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
26 * Clara, CA 95054 USA or visit http://www.sun.com if you need
27 * additional information or have any questions.
28 */
29
30#ifndef ___VBox_vmx_h
31#define ___VBox_vmx_h
32
33#include <VBox/types.h>
34#include <VBox/err.h>
35#include <iprt/assert.h>
36#include <iprt/asm.h>
37
38/** @defgroup grp_vmx vmx Types and Definitions
39 * @ingroup grp_hwaccm
40 * @{
41 */
42
43/** VMX Basic Exit Reasons.
44 * @{
45 */
46/* And-mask for setting reserved bits to zero */
47#define VMX_EFLAGS_RESERVED_0 (~0xffc08028)
48/* Or-mask for setting reserved bits to 1 */
49#define VMX_EFLAGS_RESERVED_1 0x00000002
50/** @} */
51
52/** VMX Basic Exit Reasons.
53 * @{
54 */
55/** 0 Exception or non-maskable interrupt (NMI). */
56#define VMX_EXIT_EXCEPTION 0
57/** 1 External interrupt. */
58#define VMX_EXIT_EXTERNAL_IRQ 1
59/** 2 Triple fault. */
60#define VMX_EXIT_TRIPLE_FAULT 2
61/** 3 INIT signal. */
62#define VMX_EXIT_INIT_SIGNAL 3
63/** 4 Start-up IPI (SIPI). */
64#define VMX_EXIT_SIPI 4
65/** 5 I/O system-management interrupt (SMI). */
66#define VMX_EXIT_IO_SMI_IRQ 5
67/** 6 Other SMI. */
68#define VMX_EXIT_SMI_IRQ 6
69/** 7 Interrupt window. */
70#define VMX_EXIT_IRQ_WINDOW 7
71/** 9 Task switch. */
72#define VMX_EXIT_TASK_SWITCH 9
73/** 10 Guest software attempted to execute CPUID. */
74#define VMX_EXIT_CPUID 10
75/** 12 Guest software attempted to execute HLT. */
76#define VMX_EXIT_HLT 12
77/** 13 Guest software attempted to execute INVD. */
78#define VMX_EXIT_INVD 13
79/** 14 Guest software attempted to execute INVPG. */
80#define VMX_EXIT_INVPG 14
81/** 15 Guest software attempted to execute RDPMC. */
82#define VMX_EXIT_RDPMC 15
83/** 16 Guest software attempted to execute RDTSC. */
84#define VMX_EXIT_RDTSC 16
85/** 17 Guest software attempted to execute RSM in SMM. */
86#define VMX_EXIT_RSM 17
87/** 18 Guest software executed VMCALL. */
88#define VMX_EXIT_VMCALL 18
89/** 19 Guest software executed VMCLEAR. */
90#define VMX_EXIT_VMCLEAR 19
91/** 20 Guest software executed VMLAUNCH. */
92#define VMX_EXIT_VMLAUNCH 20
93/** 21 Guest software executed VMPTRLD. */
94#define VMX_EXIT_VMPTRLD 21
95/** 22 Guest software executed VMPTRST. */
96#define VMX_EXIT_VMPTRST 22
97/** 23 Guest software executed VMREAD. */
98#define VMX_EXIT_VMREAD 23
99/** 24 Guest software executed VMRESUME. */
100#define VMX_EXIT_VMRESUME 24
101/** 25 Guest software executed VMWRITE. */
102#define VMX_EXIT_VMWRITE 25
103/** 26 Guest software executed VMXOFF. */
104#define VMX_EXIT_VMXOFF 26
105/** 27 Guest software executed VMXON. */
106#define VMX_EXIT_VMXON 27
107/** 28 Control-register accesses. */
108#define VMX_EXIT_CRX_MOVE 28
109/** 29 Debug-register accesses. */
110#define VMX_EXIT_DRX_MOVE 29
111/** 30 I/O instruction. */
112#define VMX_EXIT_PORT_IO 30
113/** 31 RDMSR. Guest software attempted to execute RDMSR. */
114#define VMX_EXIT_RDMSR 31
115/** 32 WRMSR. Guest software attempted to execute WRMSR. */
116#define VMX_EXIT_WRMSR 32
117/** 33 VM-entry failure due to invalid guest state. */
118#define VMX_EXIT_ERR_INVALID_GUEST_STATE 33
119/** 34 VM-entry failure due to MSR loading. */
120#define VMX_EXIT_ERR_MSR_LOAD 34
121/** 36 Guest software executed MWAIT. */
122#define VMX_EXIT_MWAIT 36
123/** 39 Guest software attempted to execute MONITOR. */
124#define VMX_EXIT_MONITOR 39
125/** 40 Guest software attempted to execute PAUSE. */
126#define VMX_EXIT_PAUSE 40
127/** 41 VM-entry failure due to machine-check. */
128#define VMX_EXIT_ERR_MACHINE_CHECK 41
129/** 43 TPR below threshold. Guest software executed MOV to CR8. */
130#define VMX_EXIT_TPR 43
131
132/** @} */
133
134
135/** VM Instruction Errors
136 * @{
137 */
138/** 1 VMCALL executed in VMX root operation. */
139#define VMX_ERROR_VMCALL 1
140/** 2 VMCLEAR with invalid physical address. */
141#define VMX_ERROR_VMCLEAR_INVALID_PHYS_ADDR 2
142/** 3 VMCLEAR with VMXON pointer. */
143#define VMX_ERROR_VMCLEAR_INVALID_VMXON_PTR 3
144/** 4 VMLAUNCH with non-clear VMCS. */
145#define VMX_ERROR_VMLAUCH_NON_CLEAR_VMCS 4
146/** 5 VMRESUME with non-launched VMCS. */
147#define VMX_ERROR_VMRESUME_NON_LAUNCHED_VMCS 5
148/** 6 VMRESUME with a corrupted VMCS (indicates corruption of the current VMCS). */
149#define VMX_ERROR_VMRESUME_CORRUPTED_VMCS 6
150/** 7 VM entry with invalid control field(s). */
151#define VMX_ERROR_VMENTRY_INVALID_CONTROL_FIELDS 7
152/** 8 VM entry with invalid host-state field(s). */
153#define VMX_ERROR_VMENTRY_INVALID_HOST_STATE 8
154/** 9 VMPTRLD with invalid physical address. */
155#define VMX_ERROR_VMPTRLD_INVALID_PHYS_ADDR 9
156/** 10 VMPTRLD with VMXON pointer. */
157#define VMX_ERROR_VMPTRLD_VMXON_PTR 10
158/** 11 VMPTRLD with incorrect VMCS revision identifier. */
159#define VMX_ERROR_VMPTRLD_WRONG_VMCS_REVISION 11
160/** 12 VMREAD/VMWRITE from/to unsupported VMCS component. */
161#define VMX_ERROR_VMREAD_INVALID_COMPONENT 12
162#define VMX_ERROR_VMWRITE_INVALID_COMPONENT VMX_ERROR_VMREAD_INVALID_COMPONENT
163/** 13 VMWRITE to read-only VMCS component. */
164#define VMX_ERROR_VMWRITE_READONLY_COMPONENT 13
165/** 15 VMXON executed in VMX root operation. */
166#define VMX_ERROR_VMXON_IN_VMX_ROOT_OP 15
167/** 16 VM entry with invalid executive-VMCS pointer. */
168#define VMX_ERROR_VMENTRY_INVALID_VMCS_EXEC_PTR 16
169/** 17 VM entry with non-launched executive VMCS. */
170#define VMX_ERROR_VMENTRY_NON_LAUNCHED_EXEC_VMCS 17
171/** 18 VM entry with executive-VMCS pointer not VMXON pointer. */
172#define VMX_ERROR_VMENTRY_EXEC_VMCS_PTR 18
173/** 19 VMCALL with non-clear VMCS. */
174#define VMX_ERROR_VMCALL_NON_CLEAR_VMCS 19
175/** 20 VMCALL with invalid VM-exit control fields. */
176#define VMX_ERROR_VMCALL_INVALID_VMEXIT_FIELDS 20
177/** 22 VMCALL with incorrect MSEG revision identifier. */
178#define VMX_ERROR_VMCALL_INVALID_MSEG_REVISION 22
179/** 23 VMXOFF under dual-monitor treatment of SMIs and SMM. */
180#define VMX_ERROR_VMXOFF_DUAL_MONITOR 23
181/** 24 VMCALL with invalid SMM-monitor features. */
182#define VMX_ERROR_VMCALL_INVALID_SMM_MONITOR 24
183/** 25 VM entry with invalid VM-execution control fields in executive VMCS. */
184#define VMX_ERROR_VMENTRY_INVALID_VM_EXEC_CTRL 25
185/** 26 VM entry with events blocked by MOV SS. */
186#define VMX_ERROR_VMENTRY_MOV_SS 26
187
188/** @} */
189
190
191/** VMX MSR bit definitions
192 * @{
193 */
194
195/** Basic VMX information.
196 * @{
197 */
198/** VMCS revision identifier used by the processor. */
199#define MSR_IA32_VMX_BASIC_INFO_VMCS_ID(a) (a & 0x7FFFFFFF)
200/** Size of the VMCS. */
201#define MSR_IA32_VMX_BASIC_INFO_VMCS_SIZE(a) ((a >> 32ULL) & 0xFFF)
202/** Width of physical address used for the VMCS.
203 * 0 -> limited to the available amount of physical ram
204 * 1 -> within the first 4 GB
205 */
206#define MSR_IA32_VMX_BASIC_INFO_VMCS_PHYS_WIDTH(a) ((a >> 48ULL) & 1)
207/** Whether the processor supports the dual-monitor treatment of system-management interrupts and system-management code. (always 1) */
208#define MSR_IA32_VMX_BASIC_INFO_VMCS_DUAL_MON(a) ((a >> 49ULL) & 1)
209/** Memory type that must be used for the VMCS. */
210#define MSR_IA32_VMX_BASIC_INFO_VMCS_MEM_TYPE(a) ((a >> 50ULL) & 0xF)
211/** @} */
212
213
214/** Misc VMX info.
215 * @{
216 */
217/** Activity states supported by the implementation. */
218#define MSR_IA32_VMX_MISC_ACTIVITY_STATES(a) ((a >> 6ULL) & 0x7)
219/** Number of CR3 target values supported by the processor. (0-256) */
220#define MSR_IA32_VMX_MISC_CR3_TARGET(a) ((a >> 16ULL) & 0x1FF)
221/** Maximum nr of MSRs in the VMCS. (N+1)*512. */
222#define MSR_IA32_VMX_MISC_MAX_MSR(a) ((((a >> 25ULL) & 0x7) + 1) * 512)
223/** MSEG revision identifier used by the processor. */
224#define MSR_IA32_VMX_MISC_MSEG_ID(a) (a >> 32ULL)
225/** @} */
226
227
228/** VMCS enumeration field info
229 * @{
230 */
231/** Highest field index. */
232#define MSR_IA32_VMX_VMCS_ENUM_HIGHEST_INDEX(a) ((a >> 1ULL) & 0x1FF)
233
234/** @} */
235
236/** @} */
237
238
239/** VMCS field encoding
240 * @{
241 */
242
243/* 16 bits guest fields
244 * @{
245 */
246#define VMX_VMCS_GUEST_FIELD_ES 0x800
247#define VMX_VMCS_GUEST_FIELD_CS 0x802
248#define VMX_VMCS_GUEST_FIELD_SS 0x804
249#define VMX_VMCS_GUEST_FIELD_DS 0x806
250#define VMX_VMCS_GUEST_FIELD_FS 0x808
251#define VMX_VMCS_GUEST_FIELD_GS 0x80A
252#define VMX_VMCS_GUEST_FIELD_LDTR 0x80C
253#define VMX_VMCS_GUEST_FIELD_TR 0x80E
254/** @} */
255
256/** 16 bits host fields
257 * @{
258 */
259#define VMX_VMCS_HOST_FIELD_ES 0xC00
260#define VMX_VMCS_HOST_FIELD_CS 0xC02
261#define VMX_VMCS_HOST_FIELD_SS 0xC04
262#define VMX_VMCS_HOST_FIELD_DS 0xC06
263#define VMX_VMCS_HOST_FIELD_FS 0xC08
264#define VMX_VMCS_HOST_FIELD_GS 0xC0A
265#define VMX_VMCS_HOST_FIELD_TR 0xC0C
266/** @} */
267
268/** 64 Bits control fields
269 * @{
270 */
271#define VMX_VMCS_CTRL_IO_BITMAP_A_FULL 0x2000
272#define VMX_VMCS_CTRL_IO_BITMAP_A_HIGH 0x2001
273#define VMX_VMCS_CTRL_IO_BITMAP_B_FULL 0x2002
274#define VMX_VMCS_CTRL_IO_BITMAP_B_HIGH 0x2003
275
276/* Optional */
277#define VMX_VMCS_CTRL_MSR_BITMAP_FULL 0x2004
278#define VMX_VMCS_CTRL_MSR_BITMAP_HIGH 0x2005
279
280#define VMX_VMCS_CTRL_VMEXIT_MSR_STORE_FULL 0x2006
281#define VMX_VMCS_CTRL_VMEXIT_MSR_STORE_HIGH 0x2007
282#define VMX_VMCS_CTRL_VMEXIT_MSR_LOAD_FULL 0x2008
283#define VMX_VMCS_CTRL_VMEXIT_MSR_LOAD_HIGH 0x2009
284
285#define VMX_VMCS_CTRL_VMENTRY_MSR_LOAD_FULL 0x200A
286#define VMX_VMCS_CTRL_VMENTRY_MSR_LOAD_HIGH 0x200B
287
288#define VMX_VMCS_CTRL_EXEC_VMCS_PTR_FULL 0x200C
289#define VMX_VMCS_CTRL_EXEC_VMCS_PTR_HIGH 0x200D
290
291#define VMX_VMCS_CTRL_TSC_OFFSET_FULL 0x2010
292#define VMX_VMCS_CTRL_TSC_OFFSET_HIGH 0x2011
293
294/* Optional */
295#define VMX_VMCS_CTRL_VAPIC_PAGEADDR_FULL 0x2012
296#define VMX_VMCS_CTRL_VAPIC_PAGEADDR_HIGH 0x2013
297/** @} */
298
299
300/** 64 Bits guest fields
301 * @{
302 */
303#define VMX_VMCS_GUEST_LINK_PTR_FULL 0x2800
304#define VMX_VMCS_GUEST_LINK_PTR_HIGH 0x2801
305#define VMX_VMCS_GUEST_DEBUGCTL_FULL 0x2802 /* MSR IA32_DEBUGCTL */
306#define VMX_VMCS_GUEST_DEBUGCTL_HIGH 0x2803 /* MSR IA32_DEBUGCTL */
307/** @} */
308
309
310/** 32 Bits control fields
311 * @{
312 */
313#define VMX_VMCS_CTRL_PIN_EXEC_CONTROLS 0x4000
314#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS 0x4002
315#define VMX_VMCS_CTRL_EXCEPTION_BITMAP 0x4004
316#define VMX_VMCS_CTRL_PAGEFAULT_ERROR_MASK 0x4006
317#define VMX_VMCS_CTRL_PAGEFAULT_ERROR_MATCH 0x4008
318#define VMX_VMCS_CTRL_CR3_TARGET_COUNT 0x400A
319#define VMX_VMCS_CTRL_EXIT_CONTROLS 0x400C
320#define VMX_VMCS_CTRL_EXIT_MSR_STORE_COUNT 0x400E
321#define VMX_VMCS_CTRL_EXIT_MSR_LOAD_COUNT 0x4010
322#define VMX_VMCS_CTRL_ENTRY_CONTROLS 0x4012
323#define VMX_VMCS_CTRL_ENTRY_MSR_LOAD_COUNT 0x4014
324#define VMX_VMCS_CTRL_ENTRY_IRQ_INFO 0x4016
325#define VMX_VMCS_CTRL_ENTRY_EXCEPTION_ERRCODE 0x4018
326#define VMX_VMCS_CTRL_ENTRY_INSTR_LENGTH 0x401A
327/* Optional */
328#define VMX_VMCS_CTRL_TPR_TRESHOLD 0x401C
329/** @} */
330
331
332/** VMX_VMCS_CTRL_PIN_EXEC_CONTROLS
333 * @{
334 */
335/* External interrupts cause VM exits if set; otherwise dispatched through the guest's IDT. */
336#define VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_EXT_INT_EXIT RT_BIT(0)
337/* Non-maskable interrupts cause VM exits if set; otherwise dispatched through the guest's IDT. */
338#define VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_NMI_EXIT RT_BIT(3)
339/* All other bits are reserved and must be set according to MSR IA32_VMX_PROCBASED_CTLS. */
340/** @} */
341
342
343/** VMX_VMCS_CTRL_PROC_EXEC_CONTROLS
344 * @{
345 */
346/* VM Exit as soon as RFLAGS.IF=1 and no blocking is active. */
347#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_IRQ_WINDOW_EXIT RT_BIT(2)
348/* Use timestamp counter offset. */
349#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_TSC_OFFSET RT_BIT(3)
350/* VM Exit when executing the HLT instruction. */
351#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_HLT_EXIT RT_BIT(7)
352/* VM Exit when executing the INVLPG instruction. */
353#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_INVLPG_EXIT RT_BIT(9)
354/* VM Exit when executing the MWAIT instruction. */
355#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MWAIT_EXIT RT_BIT(10)
356/* VM Exit when executing the RDPMC instruction. */
357#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDPMC_EXIT RT_BIT(11)
358/* VM Exit when executing the RDTSC instruction. */
359#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDTSC_EXIT RT_BIT(12)
360/* VM Exit on CR8 loads. */
361#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_LOAD_EXIT RT_BIT(19)
362/* VM Exit on CR8 stores. */
363#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_STORE_EXIT RT_BIT(20)
364/* Use TPR shadow. */
365#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_TPR_SHADOW RT_BIT(21)
366/* VM Exit when executing a MOV DRx instruction. */
367#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MOV_DR_EXIT RT_BIT(23)
368/* VM Exit when executing IO instructions. */
369#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_UNCOND_IO_EXIT RT_BIT(24)
370/* Use IO bitmaps. */
371#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_IO_BITMAPS RT_BIT(25)
372/* Use MSR bitmaps. */
373#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_MSR_BITMAPS RT_BIT(28)
374/* VM Exit when executing the MONITOR instruction. */
375#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MONITOR_EXIT RT_BIT(29)
376/* VM Exit when executing the PAUSE instruction. */
377#define VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_PAUSE_EXIT RT_BIT(30)
378/** @} */
379
380
381/** VMX_VMCS_CTRL_ENTRY_CONTROLS
382 * @{
383 */
384/** 64 bits guest mode. Must be 0 for CPUs that don't support AMD64. */
385#define VMX_VMCS_CTRL_ENTRY_CONTROLS_IA64_MODE RT_BIT(9)
386/** In SMM mode after VM-entry. */
387#define VMX_VMCS_CTRL_ENTRY_CONTROLS_ENTRY_SMM RT_BIT(10)
388/** Disable dual treatment of SMI and SMM; must be zero for VM-entry outside of SMM. */
389#define VMX_VMCS_CTRL_ENTRY_CONTROLS_DEACTIVATE_DUALMON RT_BIT(11)
390/** @} */
391
392
393/** VMX_VMCS_CTRL_EXIT_CONTROLS
394 * @{
395 */
396/** Return to long mode after a VM-exit. */
397#define VMX_VMCS_CTRL_EXIT_CONTROLS_HOST_AMD64 RT_BIT(9)
398/** Acknowledge external interrupts with the irq controller if one caused a VM-exit. */
399#define VMX_VMCS_CTRL_EXIT_CONTROLS_ACK_EXTERNAL_IRQ RT_BIT(15)
400/** @} */
401
402/** 32 Bits read-only fields
403 * @{
404 */
405#define VMX_VMCS_RO_VM_INSTR_ERROR 0x4400
406#define VMX_VMCS_RO_EXIT_REASON 0x4402
407#define VMX_VMCS_RO_EXIT_INTERRUPTION_INFO 0x4404
408#define VMX_VMCS_RO_EXIT_INTERRUPTION_ERRCODE 0x4406
409#define VMX_VMCS_RO_IDT_INFO 0x4408
410#define VMX_VMCS_RO_IDT_ERRCODE 0x440A
411#define VMX_VMCS_RO_EXIT_INSTR_LENGTH 0x440C
412#define VMX_VMCS_RO_EXIT_INSTR_INFO 0x440E
413/** @} */
414
415/** VMX_VMCS_RO_EXIT_INTERRUPTION_INFO
416 * @{
417 */
418#define VMX_EXIT_INTERRUPTION_INFO_VECTOR(a) (a & 0xff)
419#define VMX_EXIT_INTERRUPTION_INFO_TYPE_SHIFT 8
420#define VMX_EXIT_INTERRUPTION_INFO_TYPE(a) ((a >> VMX_EXIT_INTERRUPTION_INFO_TYPE_SHIFT) & 7)
421#define VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_VALID RT_BIT(11)
422#define VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_IS_VALID(a) (a & VMX_EXIT_INTERRUPTION_INFO_ERROR_CODE_VALID)
423#define VMX_EXIT_INTERRUPTION_INFO_NMI_UNBLOCK(a) (a & RT_BIT(12))
424#define VMX_EXIT_INTERRUPTION_INFO_VALID_SHIFT 31
425#define VMX_EXIT_INTERRUPTION_INFO_VALID(a) (a & RT_BIT(31))
426/* Construct an irq event injection value from the exit interruption info value (same except that bit 12 is reserved). */
427#define VMX_VMCS_CTRL_ENTRY_IRQ_INFO_FROM_EXIT_INT_INFO(a) (a & ~RT_BIT(12))
428/** @} */
429
430/** VMX_VMCS_RO_EXIT_INTERRUPTION_INFO_TYPE
431 * @{
432 */
433#define VMX_EXIT_INTERRUPTION_INFO_TYPE_EXT 0
434#define VMX_EXIT_INTERRUPTION_INFO_TYPE_NMI 2
435#define VMX_EXIT_INTERRUPTION_INFO_TYPE_HWEXCPT 3
436#define VMX_EXIT_INTERRUPTION_INFO_TYPE_SW 4 /* int xx */
437#define VMX_EXIT_INTERRUPTION_INFO_TYPE_SWEXCPT 6
438/** @} */
439
440
441/** 32 Bits guest state fields
442 * @{
443 */
444#define VMX_VMCS_GUEST_ES_LIMIT 0x4800
445#define VMX_VMCS_GUEST_CS_LIMIT 0x4802
446#define VMX_VMCS_GUEST_SS_LIMIT 0x4804
447#define VMX_VMCS_GUEST_DS_LIMIT 0x4806
448#define VMX_VMCS_GUEST_FS_LIMIT 0x4808
449#define VMX_VMCS_GUEST_GS_LIMIT 0x480A
450#define VMX_VMCS_GUEST_LDTR_LIMIT 0x480C
451#define VMX_VMCS_GUEST_TR_LIMIT 0x480E
452#define VMX_VMCS_GUEST_GDTR_LIMIT 0x4810
453#define VMX_VMCS_GUEST_IDTR_LIMIT 0x4812
454#define VMX_VMCS_GUEST_ES_ACCESS_RIGHTS 0x4814
455#define VMX_VMCS_GUEST_CS_ACCESS_RIGHTS 0x4816
456#define VMX_VMCS_GUEST_SS_ACCESS_RIGHTS 0x4818
457#define VMX_VMCS_GUEST_DS_ACCESS_RIGHTS 0x481A
458#define VMX_VMCS_GUEST_FS_ACCESS_RIGHTS 0x481C
459#define VMX_VMCS_GUEST_GS_ACCESS_RIGHTS 0x481E
460#define VMX_VMCS_GUEST_LDTR_ACCESS_RIGHTS 0x4820
461#define VMX_VMCS_GUEST_TR_ACCESS_RIGHTS 0x4822
462#define VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE 0x4824
463#define VMX_VMCS_GUEST_ACTIVITY_STATE 0x4826
464#define VMX_VMCS_GUEST_SYSENTER_CS 0x482A /* MSR IA32_SYSENTER_CS */
465/** @} */
466
467
468/** VMX_VMCS_GUEST_ACTIVITY_STATE
469 * @{
470 */
471/* The logical processor is active. */
472#define VMX_CMS_GUEST_ACTIVITY_ACTIVE 0x0
473/* The logical processor is inactive, because executed a HLT instruction. */
474#define VMX_CMS_GUEST_ACTIVITY_HLT 0x1
475/* The logical processor is inactive, because of a triple fault or other serious error. */
476#define VMX_CMS_GUEST_ACTIVITY_SHUTDOWN 0x2
477/* The logical processor is inactive, because it's waiting for a startup-IPI */
478#define VMX_CMS_GUEST_ACTIVITY_SIPI_WAIT 0x3
479/** @} */
480
481
482/** VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE
483 * @{
484 */
485#define VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE_BLOCK_STI RT_BIT(0)
486#define VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE_BLOCK_MOVSS RT_BIT(1)
487#define VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE_BLOCK_SMI RT_BIT(2)
488#define VMX_VMCS_GUEST_INTERRUPTIBILITY_STATE_BLOCK_NMI RT_BIT(3)
489/** @} */
490
491
492/** 32 Bits host state fields
493 * @{
494 */
495#define VMX_VMCS_HOST_SYSENTER_CS 0x4C00
496/** @} */
497
498/** Natural width control fields
499 * @{
500 */
501#define VMX_VMCS_CTRL_CR0_MASK 0x6000
502#define VMX_VMCS_CTRL_CR4_MASK 0x6002
503#define VMX_VMCS_CTRL_CR0_READ_SHADOW 0x6004
504#define VMX_VMCS_CTRL_CR4_READ_SHADOW 0x6006
505#define VMX_VMCS_CTRL_CR3_TARGET_VAL0 0x6008
506#define VMX_VMCS_CTRL_CR3_TARGET_VAL1 0x600A
507#define VMX_VMCS_CTRL_CR3_TARGET_VAL2 0x600C
508#define VMX_VMCS_CTRL_CR3_TARGET_VAL31 0x600E
509/** @} */
510
511
512/** Natural width read-only data fields
513 * @{
514 */
515#define VMX_VMCS_RO_EXIT_QUALIFICATION 0x6400
516#define VMX_VMCS_RO_IO_RCX 0x6402
517#define VMX_VMCS_RO_IO_RSX 0x6404
518#define VMX_VMCS_RO_IO_RDI 0x6406
519#define VMX_VMCS_RO_IO_RIP 0x6408
520#define VMX_VMCS_GUEST_LINEAR_ADDR 0x640A
521/** @} */
522
523
524/** VMX_VMCS_RO_EXIT_QUALIFICATION
525 * @{
526 */
527
528/** DRx moves
529 * @{
530 */
531/** 0-2: Debug register number */
532#define VMX_EXIT_QUALIFICATION_DRX_REGISTER(a) (a & 7)
533/** 3: Reserved; cleared to 0. */
534#define VMX_EXIT_QUALIFICATION_DRX_RES1(a) ((a >> 3) & 1)
535/** 4: Direction of move (0 = write, 1 = read) */
536#define VMX_EXIT_QUALIFICATION_DRX_DIRECTION(a) ((a >> 4) & 1)
537/** 5-7: Reserved; cleared to 0. */
538#define VMX_EXIT_QUALIFICATION_DRX_RES2(a) ((a >> 5) & 7)
539/** 8-11: General purpose register number. */
540#define VMX_EXIT_QUALIFICATION_DRX_GENREG(a) ((a >> 8) & 0xF)
541/** Rest: reserved. */
542
543/** VMX_EXIT_QUALIFICATION_DRX_DIRECTION
544 * @{
545 */
546#define VMX_EXIT_QUALIFICATION_DRX_DIRECTION_WRITE 0
547#define VMX_EXIT_QUALIFICATION_DRX_DIRECTION_READ 1
548/** @} */
549
550/** @} */
551
552
553/** CRx accesses
554 * @{
555 */
556/** 0-3: Control register number (0 for CLTS & LMSW) */
557#define VMX_EXIT_QUALIFICATION_CRX_REGISTER(a) (a & 0xF)
558/** 4-5: Access type. */
559#define VMX_EXIT_QUALIFICATION_CRX_ACCESS(a) ((a >> 4) & 3)
560/** 6: LMSW operand type */
561#define VMX_EXIT_QUALIFICATION_CRX_LMSW_OP(a) ((a >> 6) & 1)
562/** 7: Reserved; cleared to 0. */
563#define VMX_EXIT_QUALIFICATION_CRX_RES1(a) ((a >> 7) & 1)
564/** 8-11: General purpose register number (0 for CLTS & LMSW). */
565#define VMX_EXIT_QUALIFICATION_CRX_GENREG(a) ((a >> 8) & 0xF)
566/** 12-15: Reserved; cleared to 0. */
567#define VMX_EXIT_QUALIFICATION_CRX_RES2(a) ((a >> 12) & 0xF)
568/** 16-31: LMSW source data (else 0). */
569#define VMX_EXIT_QUALIFICATION_CRX_LMSW_DATA(a) ((a >> 16) & 0xFFFF)
570/** Rest: reserved. */
571
572
573/** VMX_EXIT_QUALIFICATION_CRX_ACCESS
574 * @{
575 */
576#define VMX_EXIT_QUALIFICATION_CRX_ACCESS_WRITE 0
577#define VMX_EXIT_QUALIFICATION_CRX_ACCESS_READ 1
578#define VMX_EXIT_QUALIFICATION_CRX_ACCESS_CLTS 2
579#define VMX_EXIT_QUALIFICATION_CRX_ACCESS_LMSW 3
580/** @} */
581
582/** @} */
583
584
585/** VMX_EXIT_PORT_IO
586 * @{
587 */
588/** 0-2: IO operation width. */
589#define VMX_EXIT_QUALIFICATION_IO_WIDTH(a) (a & 7)
590/** 3: IO operation direction. */
591#define VMX_EXIT_QUALIFICATION_IO_DIRECTION(a) ((a >> 3) & 1)
592/** 4: String IO operation. */
593#define VMX_EXIT_QUALIFICATION_IO_STRING(a) ((a >> 4) & 1)
594/** 5: Repeated IO operation. */
595#define VMX_EXIT_QUALIFICATION_IO_REP(a) ((a >> 5) & 1)
596/** 6: Operand encoding. */
597#define VMX_EXIT_QUALIFICATION_IO_ENCODING(a) ((a >> 6) & 1)
598/** 16-31: IO Port (0-0xffff). */
599#define VMX_EXIT_QUALIFICATION_IO_PORT(a) ((a >> 16) & 0xffff)
600/* Rest reserved. */
601/** @} */
602
603/** VMX_EXIT_QUALIFICATION_IO_DIRECTION
604 * @{
605 */
606#define VMX_EXIT_QUALIFICATION_IO_DIRECTION_OUT 0
607#define VMX_EXIT_QUALIFICATION_IO_DIRECTION_IN 1
608/** @} */
609
610
611/** VMX_EXIT_QUALIFICATION_IO_ENCODING
612 * @{
613 */
614#define VMX_EXIT_QUALIFICATION_IO_ENCODING_DX 0
615#define VMX_EXIT_QUALIFICATION_IO_ENCODING_IMM 1
616/** @} */
617
618/** @} */
619
620/** Natural width guest state fields
621 * @{
622 */
623#define VMX_VMCS_GUEST_CR0 0x6800
624#define VMX_VMCS_GUEST_CR3 0x6802
625#define VMX_VMCS_GUEST_CR4 0x6804
626#define VMX_VMCS_GUEST_ES_BASE 0x6806
627#define VMX_VMCS_GUEST_CS_BASE 0x6808
628#define VMX_VMCS_GUEST_SS_BASE 0x680A
629#define VMX_VMCS_GUEST_DS_BASE 0x680C
630#define VMX_VMCS_GUEST_FS_BASE 0x680E
631#define VMX_VMCS_GUEST_GS_BASE 0x6810
632#define VMX_VMCS_GUEST_LDTR_BASE 0x6812
633#define VMX_VMCS_GUEST_TR_BASE 0x6814
634#define VMX_VMCS_GUEST_GDTR_BASE 0x6816
635#define VMX_VMCS_GUEST_IDTR_BASE 0x6818
636#define VMX_VMCS_GUEST_DR7 0x681A
637#define VMX_VMCS_GUEST_RSP 0x681C
638#define VMX_VMCS_GUEST_RIP 0x681E
639#define VMX_VMCS_GUEST_RFLAGS 0x6820
640#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS 0x6822
641#define VMX_VMCS_GUEST_SYSENTER_ESP 0x6824 /* MSR IA32_SYSENTER_ESP */
642#define VMX_VMCS_GUEST_SYSENTER_EIP 0x6826 /* MSR IA32_SYSENTER_EIP */
643/** @} */
644
645
646/** VMX_VMCS_GUEST_DEBUG_EXCEPTIONS
647 * @{
648 */
649/* Hardware breakpoint 0 was met. */
650#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_B0 RT_BIT(0)
651/* Hardware breakpoint 1 was met. */
652#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_B1 RT_BIT(1)
653/* Hardware breakpoint 2 was met. */
654#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_B2 RT_BIT(2)
655/* Hardware breakpoint 3 was met. */
656#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_B3 RT_BIT(3)
657/* At least one data or IO breakpoint was hit. */
658#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_BREAKPOINT_ENABLED RT_BIT(12)
659/* A debug exception would have been triggered by single-step execution mode. */
660#define VMX_VMCS_GUEST_DEBUG_EXCEPTIONS_BS RT_BIT(14)
661/* Bits 4-11, 13 and 15-63 are reserved. */
662
663
664
665
666/** @} */
667
668/** Natural width host state fields
669 * @{
670 */
671#define VMX_VMCS_HOST_CR0 0x6C00
672#define VMX_VMCS_HOST_CR3 0x6C02
673#define VMX_VMCS_HOST_CR4 0x6C04
674#define VMX_VMCS_HOST_FS_BASE 0x6C06
675#define VMX_VMCS_HOST_GS_BASE 0x6C08
676#define VMX_VMCS_HOST_TR_BASE 0x6C0A
677#define VMX_VMCS_HOST_GDTR_BASE 0x6C0C
678#define VMX_VMCS_HOST_IDTR_BASE 0x6C0E
679#define VMX_VMCS_HOST_SYSENTER_ESP 0x6C10
680#define VMX_VMCS_HOST_SYSENTER_EIP 0x6C12
681#define VMX_VMCS_HOST_RSP 0x6C14
682#define VMX_VMCS_HOST_RIP 0x6C16
683/** @} */
684
685/** @} */
686
687
688#if RT_INLINE_ASM_GNU_STYLE
689# define __STR(x) #x
690# define STR(x) __STR(x)
691#endif
692
693
694/** @} */
695
696/** @defgroup grp_vmx_asm vmx assembly helpers
697 * @ingroup grp_vmx
698 * @{
699 */
700
701/**
702 * Executes VMXON
703 *
704 * @returns VBox status code
705 * @param pVMXOn Physical address of VMXON structure
706 */
707#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
708DECLASM(int) VMXEnable(RTHCPHYS pVMXOn);
709#else
710DECLINLINE(int) VMXEnable(RTHCPHYS pVMXOn)
711{
712 int rc = VINF_SUCCESS;
713# if RT_INLINE_ASM_GNU_STYLE
714 __asm__ __volatile__ (
715 "push %3 \n\t"
716 "push %2 \n\t"
717 ".byte 0xF3, 0x0F, 0xC7, 0x34, 0x24 # VMXON [esp] \n\t"
718 "ja 2f \n\t"
719 "je 1f \n\t"
720 "movl $"STR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
721 "jmp 2f \n\t"
722 "1: \n\t"
723 "movl $"STR(VERR_VMX_GENERIC)", %0 \n\t"
724 "2: \n\t"
725 "add $8, %%esp \n\t"
726 :"=rm"(rc)
727 :"0"(VINF_SUCCESS),
728 "ir"((uint32_t)pVMXOn), /* don't allow direct memory reference here, */
729 "ir"((uint32_t)(pVMXOn >> 32)) /* this would not work with -fomit-frame-pointer */
730 :"memory"
731 );
732# else
733 __asm
734 {
735 push dword ptr [pVMXOn+4]
736 push dword ptr [pVMXOn]
737 _emit 0xF3
738 _emit 0x0F
739 _emit 0xC7
740 _emit 0x34
741 _emit 0x24 /* VMXON [esp] */
742 jnc vmxon_good
743 mov dword ptr [rc], VERR_VMX_INVALID_VMXON_PTR
744 jmp the_end
745
746vmxon_good:
747 jnz the_end
748 mov dword ptr [rc], VERR_VMX_GENERIC
749the_end:
750 add esp, 8
751 }
752# endif
753 return rc;
754}
755#endif
756
757
758/**
759 * Executes VMXOFF
760 */
761#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
762DECLASM(void) VMXDisable(void);
763#else
764DECLINLINE(void) VMXDisable(void)
765{
766# if RT_INLINE_ASM_GNU_STYLE
767 __asm__ __volatile__ (
768 ".byte 0x0F, 0x01, 0xC4 # VMXOFF \n\t"
769 );
770# else
771 __asm
772 {
773 _emit 0x0F
774 _emit 0x01
775 _emit 0xC4 /* VMXOFF */
776 }
777# endif
778}
779#endif
780
781
782/**
783 * Executes VMCLEAR
784 *
785 * @returns VBox status code
786 * @param pVMCS Physical address of VM control structure
787 */
788#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
789DECLASM(int) VMXClearVMCS(RTHCPHYS pVMCS);
790#else
791DECLINLINE(int) VMXClearVMCS(RTHCPHYS pVMCS)
792{
793 int rc = VINF_SUCCESS;
794# if RT_INLINE_ASM_GNU_STYLE
795 __asm__ __volatile__ (
796 "push %3 \n\t"
797 "push %2 \n\t"
798 ".byte 0x66, 0x0F, 0xC7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
799 "jnc 1f \n\t"
800 "movl $"STR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
801 "1: \n\t"
802 "add $8, %%esp \n\t"
803 :"=rm"(rc)
804 :"0"(VINF_SUCCESS),
805 "ir"((uint32_t)pVMCS), /* don't allow direct memory reference here, */
806 "ir"((uint32_t)(pVMCS >> 32)) /* this would not work with -fomit-frame-pointer */
807 :"memory"
808 );
809# else
810 __asm
811 {
812 push dword ptr [pVMCS+4]
813 push dword ptr [pVMCS]
814 _emit 0x66
815 _emit 0x0F
816 _emit 0xC7
817 _emit 0x34
818 _emit 0x24 /* VMCLEAR [esp] */
819 jnc success
820 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
821success:
822 add esp, 8
823 }
824# endif
825 return rc;
826}
827#endif
828
829
830/**
831 * Executes VMPTRLD
832 *
833 * @returns VBox status code
834 * @param pVMCS Physical address of VMCS structure
835 */
836#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
837DECLASM(int) VMXActivateVMCS(RTHCPHYS pVMCS);
838#else
839DECLINLINE(int) VMXActivateVMCS(RTHCPHYS pVMCS)
840{
841 int rc = VINF_SUCCESS;
842# if RT_INLINE_ASM_GNU_STYLE
843 __asm__ __volatile__ (
844 "push %3 \n\t"
845 "push %2 \n\t"
846 ".byte 0x0F, 0xC7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
847 "jnc 1f \n\t"
848 "movl $"STR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
849 "1: \n\t"
850 "add $8, %%esp \n\t"
851 :"=rm"(rc)
852 :"0"(VINF_SUCCESS),
853 "ir"((uint32_t)pVMCS), /* don't allow direct memory reference here, */
854 "ir"((uint32_t)(pVMCS >> 32)) /* this will not work with -fomit-frame-pointer */
855 );
856# else
857 __asm
858 {
859 push dword ptr [pVMCS+4]
860 push dword ptr [pVMCS]
861 _emit 0x0F
862 _emit 0xC7
863 _emit 0x34
864 _emit 0x24 /* VMPTRLD [esp] */
865 jnc success
866 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
867
868success:
869 add esp, 8
870 }
871# endif
872 return rc;
873}
874#endif
875
876
877/**
878 * Executes VMWRITE
879 *
880 * @returns VBox status code
881 * @param idxField VMCS index
882 * @param u64Val 16, 32 or 64 bits value
883 */
884DECLASM(int) VMXWriteVMCS64(uint32_t idxField, uint64_t u64Val);
885
886/**
887 * Executes VMWRITE
888 *
889 * @returns VBox status code
890 * @param idxField VMCS index
891 * @param u32Val 32 bits value
892 */
893#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
894DECLASM(int) VMXWriteVMCS32(uint32_t idxField, uint32_t u32Val);
895#else
896DECLINLINE(int) VMXWriteVMCS32(uint32_t idxField, uint32_t u32Val)
897{
898 int rc = VINF_SUCCESS;
899# if RT_INLINE_ASM_GNU_STYLE
900 __asm__ __volatile__ (
901 ".byte 0x0F, 0x79, 0xC2 # VMWRITE eax, edx \n\t"
902 "ja 2f \n\t"
903 "je 1f \n\t"
904 "movl $"STR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
905 "jmp 2f \n\t"
906 "1: \n\t"
907 "movl $"STR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
908 "2: \n\t"
909 :"=rm"(rc)
910 :"0"(VINF_SUCCESS),
911 "a"(idxField),
912 "d"(u32Val)
913 );
914# else
915 __asm
916 {
917 push dword ptr [u32Val]
918 mov eax, [idxField]
919 _emit 0x0F
920 _emit 0x79
921 _emit 0x04
922 _emit 0x24 /* VMWRITE eax, [esp] */
923 jnc valid_vmcs
924 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
925 jmp the_end
926
927valid_vmcs:
928 jnz the_end
929 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
930the_end:
931 add esp, 4
932 }
933# endif
934 return rc;
935}
936#endif
937
938#if HC_ARCH_BITS == 64
939#define VMXWriteVMCS VMXWriteVMCS64
940#else
941#define VMXWriteVMCS VMXWriteVMCS32
942#endif /* HC_ARCH_BITS == 64 */
943
944
945/**
946 * Executes VMREAD
947 *
948 * @returns VBox status code
949 * @param idxField VMCS index
950 * @param pData Ptr to store VM field value
951 */
952DECLASM(int) VMXReadVMCS64(uint32_t idxField, uint64_t *pData);
953
954/**
955 * Executes VMREAD
956 *
957 * @returns VBox status code
958 * @param idxField VMCS index
959 * @param pData Ptr to store VM field value
960 */
961#if RT_INLINE_ASM_EXTERNAL || HC_ARCH_BITS == 64
962DECLASM(int) VMXReadVMCS32(uint32_t idxField, uint32_t *pData);
963#else
964DECLINLINE(int) VMXReadVMCS32(uint32_t idxField, uint32_t *pData)
965{
966 int rc = VINF_SUCCESS;
967# if RT_INLINE_ASM_GNU_STYLE
968 __asm__ __volatile__ (
969 "movl $"STR(VINF_SUCCESS)", %0 \n\t"
970 ".byte 0x0F, 0x78, 0xc2 # VMREAD eax, edx \n\t"
971 "ja 2f \n\t"
972 "je 1f \n\t"
973 "movl $"STR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
974 "jmp 2f \n\t"
975 "1: \n\t"
976 "movl $"STR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
977 "2: \n\t"
978 :"=&r"(rc),
979 "=d"(*pData)
980 :"a"(idxField),
981 "d"(0)
982 );
983# else
984 __asm
985 {
986 sub esp, 4
987 mov dword ptr [esp], 0
988 mov eax, [idxField]
989 _emit 0x0F
990 _emit 0x78
991 _emit 0x04
992 _emit 0x24 /* VMREAD eax, [esp] */
993 mov edx, pData
994 pop dword ptr [edx]
995 jnc valid_vmcs
996 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
997 jmp the_end
998
999valid_vmcs:
1000 jnz the_end
1001 mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
1002the_end:
1003 }
1004# endif
1005 return rc;
1006}
1007#endif
1008
1009#if HC_ARCH_BITS == 64
1010#define VMXReadVMCS VMXReadVMCS64
1011#else
1012#define VMXReadVMCS VMXReadVMCS32
1013#endif /* HC_ARCH_BITS == 64 */
1014
1015/**
1016 * Gets the last instruction error value from the current VMCS
1017 *
1018 * @returns error value
1019 */
1020DECLINLINE(uint32_t) VMXGetLastError(void)
1021{
1022#if HC_ARCH_BITS == 64
1023 uint64_t uLastError = 0;
1024 int rc = VMXReadVMCS(VMX_VMCS_RO_VM_INSTR_ERROR, &uLastError);
1025 AssertRC(rc);
1026 return (uint32_t)uLastError;
1027
1028#else /* 32-bit host: */
1029 uint32_t lasterr = 0;
1030 int rc;
1031
1032 rc = VMXReadVMCS32(VMX_VMCS_RO_VM_INSTR_ERROR, &lasterr);
1033 AssertRC(rc);
1034 return lasterr;
1035#endif
1036}
1037
1038/** @} */
1039
1040#endif
1041
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