IEMAllCImplVmxInstr.cpp@ 100998

Last change on this file since 100998 was 100109, checked in by vboxsync, 18 months ago
VMM/IEM: Make it compile and link again with VBOX_WITH_IEM_RECOMPILER=1. bugref:10369
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1	/* $Id: IEMAllCImplVmxInstr.cpp 100109 2023-06-07 20:21:40Z vboxsync $ */
2	/** @file
3	* IEM - VT-x instruction implementation.
4	*/
5
6	/*
7	* Copyright (C) 2011-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_IEM_VMX
33	#define VMCPU_INCL_CPUM_GST_CTX
34	#include <VBox/vmm/iem.h>
35	#include <VBox/vmm/apic.h>
36	#include <VBox/vmm/cpum.h>
37	#include <VBox/vmm/dbgf.h>
38	#include <VBox/vmm/em.h>
39	#include <VBox/vmm/gim.h>
40	#include <VBox/vmm/hm.h>
41	#include <VBox/vmm/pgm.h>
42	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
43	# include <VBox/vmm/hmvmxinline.h>
44	#endif
45	#include <VBox/vmm/tm.h>
46	#include "IEMInternal.h"
47	#include <VBox/vmm/vmcc.h>
48	#include <VBox/log.h>
49	#include <VBox/err.h>
50	#include <VBox/param.h>
51	#include <VBox/disopcode-x86-amd64.h>
52	#include <iprt/asm-math.h>
53	#include <iprt/assert.h>
54	#include <iprt/string.h>
55	#include <iprt/x86.h>
56
57	#include "IEMInline.h"
58
59
60	/*********************************************************************************************************************************
61	* Defined Constants And Macros *
62	*********************************************************************************************************************************/
63	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
64	/**
65	* Gets the ModR/M, SIB and displacement byte(s) from decoded opcodes given their
66	* relative offsets.
67	*/
68	# ifdef IEM_WITH_CODE_TLB /** @todo IEM TLB */
69	# define IEM_MODRM_GET_U8(a_pVCpu, a_bModRm, a_offModRm) do { a_bModRm = 0; RT_NOREF(a_offModRm); } while (0)
70	# define IEM_SIB_GET_U8(a_pVCpu, a_bSib, a_offSib) do { a_bSib = 0; RT_NOREF(a_offSib); } while (0)
71	# define IEM_DISP_GET_U16(a_pVCpu, a_u16Disp, a_offDisp) do { a_u16Disp = 0; RT_NOREF(a_offDisp); } while (0)
72	# define IEM_DISP_GET_S8_SX_U16(a_pVCpu, a_u16Disp, a_offDisp) do { a_u16Disp = 0; RT_NOREF(a_offDisp); } while (0)
73	# define IEM_DISP_GET_U32(a_pVCpu, a_u32Disp, a_offDisp) do { a_u32Disp = 0; RT_NOREF(a_offDisp); } while (0)
74	# define IEM_DISP_GET_S8_SX_U32(a_pVCpu, a_u32Disp, a_offDisp) do { a_u32Disp = 0; RT_NOREF(a_offDisp); } while (0)
75	# define IEM_DISP_GET_S32_SX_U64(a_pVCpu, a_u64Disp, a_offDisp) do { a_u64Disp = 0; RT_NOREF(a_offDisp); } while (0)
76	# define IEM_DISP_GET_S8_SX_U64(a_pVCpu, a_u64Disp, a_offDisp) do { a_u64Disp = 0; RT_NOREF(a_offDisp); } while (0)
77	# if 0
78	# error "Implement me: Getting ModR/M, SIB, displacement needs to work even when instruction crosses a page boundary."
79	# endif
80	# else /* !IEM_WITH_CODE_TLB */
81	# define IEM_MODRM_GET_U8(a_pVCpu, a_bModRm, a_offModRm) \
82	do \
83	{ \
84	Assert((a_offModRm) < (a_pVCpu)->iem.s.cbOpcode); \
85	(a_bModRm) = (a_pVCpu)->iem.s.abOpcode[(a_offModRm)]; \
86	} while (0)
87
88	# define IEM_SIB_GET_U8(a_pVCpu, a_bSib, a_offSib) IEM_MODRM_GET_U8(a_pVCpu, a_bSib, a_offSib)
89
90	# define IEM_DISP_GET_U16(a_pVCpu, a_u16Disp, a_offDisp) \
91	do \
92	{ \
93	Assert((a_offDisp) + 1 < (a_pVCpu)->iem.s.cbOpcode); \
94	uint8_t const bTmpLo = (a_pVCpu)->iem.s.abOpcode[(a_offDisp)]; \
95	uint8_t const bTmpHi = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 1]; \
96	(a_u16Disp) = RT_MAKE_U16(bTmpLo, bTmpHi); \
97	} while (0)
98
99	# define IEM_DISP_GET_S8_SX_U16(a_pVCpu, a_u16Disp, a_offDisp) \
100	do \
101	{ \
102	Assert((a_offDisp) < (a_pVCpu)->iem.s.cbOpcode); \
103	(a_u16Disp) = (int8_t)((a_pVCpu)->iem.s.abOpcode[(a_offDisp)]); \
104	} while (0)
105
106	# define IEM_DISP_GET_U32(a_pVCpu, a_u32Disp, a_offDisp) \
107	do \
108	{ \
109	Assert((a_offDisp) + 3 < (a_pVCpu)->iem.s.cbOpcode); \
110	uint8_t const bTmp0 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp)]; \
111	uint8_t const bTmp1 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 1]; \
112	uint8_t const bTmp2 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 2]; \
113	uint8_t const bTmp3 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 3]; \
114	(a_u32Disp) = RT_MAKE_U32_FROM_U8(bTmp0, bTmp1, bTmp2, bTmp3); \
115	} while (0)
116
117	# define IEM_DISP_GET_S8_SX_U32(a_pVCpu, a_u32Disp, a_offDisp) \
118	do \
119	{ \
120	Assert((a_offDisp) + 1 < (a_pVCpu)->iem.s.cbOpcode); \
121	(a_u32Disp) = (int8_t)((a_pVCpu)->iem.s.abOpcode[(a_offDisp)]); \
122	} while (0)
123
124	# define IEM_DISP_GET_S8_SX_U64(a_pVCpu, a_u64Disp, a_offDisp) \
125	do \
126	{ \
127	Assert((a_offDisp) + 1 < (a_pVCpu)->iem.s.cbOpcode); \
128	(a_u64Disp) = (int8_t)((a_pVCpu)->iem.s.abOpcode[(a_offDisp)]); \
129	} while (0)
130
131	# define IEM_DISP_GET_S32_SX_U64(a_pVCpu, a_u64Disp, a_offDisp) \
132	do \
133	{ \
134	Assert((a_offDisp) + 3 < (a_pVCpu)->iem.s.cbOpcode); \
135	uint8_t const bTmp0 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp)]; \
136	uint8_t const bTmp1 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 1]; \
137	uint8_t const bTmp2 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 2]; \
138	uint8_t const bTmp3 = (a_pVCpu)->iem.s.abOpcode[(a_offDisp) + 3]; \
139	(a_u64Disp) = (int32_t)RT_MAKE_U32_FROM_U8(bTmp0, bTmp1, bTmp2, bTmp3); \
140	} while (0)
141	# endif /* !IEM_WITH_CODE_TLB */
142
143	/** Check for VMX instructions requiring to be in VMX operation.
144	* @note Any changes here, check if IEMOP_HLP_IN_VMX_OPERATION needs updating. */
145	# define IEM_VMX_IN_VMX_OPERATION(a_pVCpu, a_szInstr, a_InsDiagPrefix) \
146	do \
147	{ \
148	if (IEM_VMX_IS_ROOT_MODE(a_pVCpu)) \
149	{ /* likely */ } \
150	else \
151	{ \
152	Log((a_szInstr ": Not in VMX operation (root mode) -> #UD\n")); \
153	(a_pVCpu)->cpum.GstCtx.hwvirt.vmx.enmDiag = a_InsDiagPrefix##_VmxRoot; \
154	return iemRaiseUndefinedOpcode(a_pVCpu); \
155	} \
156	} while (0)
157
158	/** Marks a VM-entry failure with a diagnostic reason, logs and returns. */
159	# define IEM_VMX_VMENTRY_FAILED_RET(a_pVCpu, a_pszInstr, a_pszFailure, a_VmxDiag) \
160	do \
161	{ \
162	LogRel(("%s: VM-entry failed! enmDiag=%u (%s) -> %s\n", (a_pszInstr), (a_VmxDiag), \
163	HMGetVmxDiagDesc(a_VmxDiag), (a_pszFailure))); \
164	(a_pVCpu)->cpum.GstCtx.hwvirt.vmx.enmDiag = (a_VmxDiag); \
165	return VERR_VMX_VMENTRY_FAILED; \
166	} while (0)
167
168	/** Marks a VM-entry failure with an return code, diagnostic reason, logs and
169	* returns. */
170	# define IEM_VMX_VMENTRY_FAILED_RET_2(a_pVCpu, a_pszInstr, a_pszFailure, a_VmxDiag, a_rc) \
171	do \
172	{ \
173	LogRel(("%s: VM-entry failed! rc=%Rrc enmDiag=%u (%s) -> %s\n", (a_pszInstr), (a_rc), (a_VmxDiag), \
174	HMGetVmxDiagDesc(a_VmxDiag), (a_pszFailure))); \
175	(a_pVCpu)->cpum.GstCtx.hwvirt.vmx.enmDiag = (a_VmxDiag); \
176	return VERR_VMX_VMENTRY_FAILED; \
177	} while (0)
178
179	/** Marks a VM-exit failure with a diagnostic reason and logs. */
180	# define IEM_VMX_VMEXIT_FAILED(a_pVCpu, a_uExitReason, a_pszFailure, a_VmxDiag) \
181	do \
182	{ \
183	LogRel(("VM-exit failed! uExitReason=%u enmDiag=%u (%s) -> %s\n", (a_uExitReason), (a_VmxDiag), \
184	HMGetVmxDiagDesc(a_VmxDiag), (a_pszFailure))); \
185	(a_pVCpu)->cpum.GstCtx.hwvirt.vmx.enmDiag = (a_VmxDiag); \
186	} while (0)
187
188	/** Marks a VM-exit failure with a diagnostic reason, logs and returns. */
189	# define IEM_VMX_VMEXIT_FAILED_RET(a_pVCpu, a_uExitReason, a_pszFailure, a_VmxDiag) \
190	do \
191	{ \
192	IEM_VMX_VMEXIT_FAILED(a_pVCpu, a_uExitReason, a_pszFailure, a_VmxDiag); \
193	return VERR_VMX_VMEXIT_FAILED; \
194	} while (0)
195
196
197	/*********************************************************************************************************************************
198	* Global Variables *
199	*********************************************************************************************************************************/
200	/** @todo NSTVMX: The following VM-exit intercepts are pending:
201	* VMX_EXIT_IO_SMI
202	* VMX_EXIT_SMI
203	* VMX_EXIT_GETSEC
204	* VMX_EXIT_RSM
205	* VMX_EXIT_MONITOR (APIC access VM-exit caused by MONITOR pending)
206	* VMX_EXIT_ERR_MACHINE_CHECK (we never need to raise this?)
207	* VMX_EXIT_RDRAND
208	* VMX_EXIT_VMFUNC
209	* VMX_EXIT_ENCLS
210	* VMX_EXIT_RDSEED
211	* VMX_EXIT_PML_FULL
212	* VMX_EXIT_XSAVES
213	* VMX_EXIT_XRSTORS
214	*/
215	/**
216	* Map of VMCS field encodings to their virtual-VMCS structure offsets.
217	*
218	* The first array dimension is VMCS field encoding of Width OR'ed with Type and the
219	* second dimension is the Index, see VMXVMCSFIELD.
220	*/
221	uint16_t const g_aoffVmcsMap[16][VMX_V_VMCS_MAX_INDEX + 1] =
222	{
223	/* VMX_VMCSFIELD_WIDTH_16BIT \| VMX_VMCSFIELD_TYPE_CONTROL: */
224	{
225	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u16Vpid),
226	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u16PostIntNotifyVector),
227	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u16EptpIndex),
228	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u16HlatPrefixSize),
229	/* 4-11 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
230	/* 12-19 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
231	/* 20-27 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
232	/* 28-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
233	},
234	/* VMX_VMCSFIELD_WIDTH_16BIT \| VMX_VMCSFIELD_TYPE_VMEXIT_INFO: */
235	{
236	/* 0-7 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
237	/* 8-15 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
238	/* 16-23 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
239	/* 24-31 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
240	/* 32-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX
241	},
242	/* VMX_VMCSFIELD_WIDTH_16BIT \| VMX_VMCSFIELD_TYPE_GUEST_STATE: */
243	{
244	/* 0 */ RT_UOFFSETOF(VMXVVMCS, GuestEs),
245	/* 1 */ RT_UOFFSETOF(VMXVVMCS, GuestCs),
246	/* 2 */ RT_UOFFSETOF(VMXVVMCS, GuestSs),
247	/* 3 */ RT_UOFFSETOF(VMXVVMCS, GuestDs),
248	/* 4 */ RT_UOFFSETOF(VMXVVMCS, GuestFs),
249	/* 5 */ RT_UOFFSETOF(VMXVVMCS, GuestGs),
250	/* 6 */ RT_UOFFSETOF(VMXVVMCS, GuestLdtr),
251	/* 7 */ RT_UOFFSETOF(VMXVVMCS, GuestTr),
252	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u16GuestIntStatus),
253	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u16PmlIndex),
254	/* 10-17 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
255	/* 18-25 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
256	/* 26-33 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
257	/* 34 */ UINT16_MAX
258	},
259	/* VMX_VMCSFIELD_WIDTH_16BIT \| VMX_VMCSFIELD_TYPE_HOST_STATE: */
260	{
261	/* 0 */ RT_UOFFSETOF(VMXVVMCS, HostEs),
262	/* 1 */ RT_UOFFSETOF(VMXVVMCS, HostCs),
263	/* 2 */ RT_UOFFSETOF(VMXVVMCS, HostSs),
264	/* 3 */ RT_UOFFSETOF(VMXVVMCS, HostDs),
265	/* 4 */ RT_UOFFSETOF(VMXVVMCS, HostFs),
266	/* 5 */ RT_UOFFSETOF(VMXVVMCS, HostGs),
267	/* 6 */ RT_UOFFSETOF(VMXVVMCS, HostTr),
268	/* 7-14 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
269	/* 15-22 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
270	/* 23-30 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
271	/* 31-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
272	},
273	/* VMX_VMCSFIELD_WIDTH_64BIT \| VMX_VMCSFIELD_TYPE_CONTROL: */
274	{
275	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64AddrIoBitmapA),
276	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64AddrIoBitmapB),
277	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64AddrMsrBitmap),
278	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64AddrExitMsrStore),
279	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64AddrExitMsrLoad),
280	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64AddrEntryMsrLoad),
281	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u64ExecVmcsPtr),
282	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u64AddrPml),
283	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u64TscOffset),
284	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u64AddrVirtApic),
285	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u64AddrApicAccess),
286	/* 11 */ RT_UOFFSETOF(VMXVVMCS, u64AddrPostedIntDesc),
287	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u64VmFuncCtls),
288	/* 13 */ RT_UOFFSETOF(VMXVVMCS, u64EptPtr),
289	/* 14 */ RT_UOFFSETOF(VMXVVMCS, u64EoiExitBitmap0),
290	/* 15 */ RT_UOFFSETOF(VMXVVMCS, u64EoiExitBitmap1),
291	/* 16 */ RT_UOFFSETOF(VMXVVMCS, u64EoiExitBitmap2),
292	/* 17 */ RT_UOFFSETOF(VMXVVMCS, u64EoiExitBitmap3),
293	/* 18 */ RT_UOFFSETOF(VMXVVMCS, u64AddrEptpList),
294	/* 19 */ RT_UOFFSETOF(VMXVVMCS, u64AddrVmreadBitmap),
295	/* 20 */ RT_UOFFSETOF(VMXVVMCS, u64AddrVmwriteBitmap),
296	/* 21 */ RT_UOFFSETOF(VMXVVMCS, u64AddrXcptVeInfo),
297	/* 22 */ RT_UOFFSETOF(VMXVVMCS, u64XssExitBitmap),
298	/* 23 */ RT_UOFFSETOF(VMXVVMCS, u64EnclsExitBitmap),
299	/* 24 */ RT_UOFFSETOF(VMXVVMCS, u64SppTablePtr),
300	/* 25 */ RT_UOFFSETOF(VMXVVMCS, u64TscMultiplier),
301	/* 26 */ RT_UOFFSETOF(VMXVVMCS, u64ProcCtls3),
302	/* 27 */ RT_UOFFSETOF(VMXVVMCS, u64EnclvExitBitmap),
303	/* 28 */ UINT16_MAX,
304	/* 29 */ UINT16_MAX,
305	/* 30 */ UINT16_MAX,
306	/* 31 */ RT_UOFFSETOF(VMXVVMCS, u64PconfigExitBitmap),
307	/* 32 */ RT_UOFFSETOF(VMXVVMCS, u64HlatPtr),
308	/* 33 */ UINT16_MAX,
309	/* 34 */ RT_UOFFSETOF(VMXVVMCS, u64ExitCtls2)
310	},
311	/* VMX_VMCSFIELD_WIDTH_64BIT \| VMX_VMCSFIELD_TYPE_VMEXIT_INFO: */
312	{
313	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64RoGuestPhysAddr),
314	/* 1-8 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
315	/* 9-16 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
316	/* 17-24 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
317	/* 25-32 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
318	/* 33-34*/ UINT16_MAX, UINT16_MAX
319	},
320	/* VMX_VMCSFIELD_WIDTH_64BIT \| VMX_VMCSFIELD_TYPE_GUEST_STATE: */
321	{
322	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64VmcsLinkPtr),
323	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64GuestDebugCtlMsr),
324	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPatMsr),
325	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64GuestEferMsr),
326	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPerfGlobalCtlMsr),
327	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPdpte0),
328	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPdpte1),
329	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPdpte2),
330	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPdpte3),
331	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u64GuestBndcfgsMsr),
332	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u64GuestRtitCtlMsr),
333	/* 11 */ UINT16_MAX,
334	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPkrsMsr),
335	/* 13-20 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
336	/* 21-28 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
337	/* 29-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
338	},
339	/* VMX_VMCSFIELD_WIDTH_64BIT \| VMX_VMCSFIELD_TYPE_HOST_STATE: */
340	{
341	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64HostPatMsr),
342	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64HostEferMsr),
343	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64HostPerfGlobalCtlMsr),
344	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64HostPkrsMsr),
345	/* 4-11 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
346	/* 12-19 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
347	/* 20-27 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
348	/* 28-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
349	},
350	/* VMX_VMCSFIELD_WIDTH_32BIT \| VMX_VMCSFIELD_TYPE_CONTROL: */
351	{
352	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u32PinCtls),
353	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u32ProcCtls),
354	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u32XcptBitmap),
355	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u32XcptPFMask),
356	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u32XcptPFMatch),
357	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u32Cr3TargetCount),
358	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u32ExitCtls),
359	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u32ExitMsrStoreCount),
360	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u32ExitMsrLoadCount),
361	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u32EntryCtls),
362	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u32EntryMsrLoadCount),
363	/* 11 */ RT_UOFFSETOF(VMXVVMCS, u32EntryIntInfo),
364	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u32EntryXcptErrCode),
365	/* 13 */ RT_UOFFSETOF(VMXVVMCS, u32EntryInstrLen),
366	/* 14 */ RT_UOFFSETOF(VMXVVMCS, u32TprThreshold),
367	/* 15 */ RT_UOFFSETOF(VMXVVMCS, u32ProcCtls2),
368	/* 16 */ RT_UOFFSETOF(VMXVVMCS, u32PleGap),
369	/* 17 */ RT_UOFFSETOF(VMXVVMCS, u32PleWindow),
370	/* 18-25 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
371	/* 26-33 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
372	/* 34 */ UINT16_MAX
373	},
374	/* VMX_VMCSFIELD_WIDTH_32BIT \| VMX_VMCSFIELD_TYPE_VMEXIT_INFO: */
375	{
376	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u32RoVmInstrError),
377	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u32RoExitReason),
378	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u32RoExitIntInfo),
379	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u32RoExitIntErrCode),
380	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u32RoIdtVectoringInfo),
381	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u32RoIdtVectoringErrCode),
382	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u32RoExitInstrLen),
383	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u32RoExitInstrInfo),
384	/* 8-15 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
385	/* 16-23 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
386	/* 24-31 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
387	/* 32-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX
388	},
389	/* VMX_VMCSFIELD_WIDTH_32BIT \| VMX_VMCSFIELD_TYPE_GUEST_STATE: */
390	{
391	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u32GuestEsLimit),
392	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u32GuestCsLimit),
393	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u32GuestSsLimit),
394	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u32GuestDsLimit),
395	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u32GuestFsLimit),
396	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u32GuestGsLimit),
397	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u32GuestLdtrLimit),
398	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u32GuestTrLimit),
399	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u32GuestGdtrLimit),
400	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u32GuestIdtrLimit),
401	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u32GuestEsAttr),
402	/* 11 */ RT_UOFFSETOF(VMXVVMCS, u32GuestCsAttr),
403	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u32GuestSsAttr),
404	/* 13 */ RT_UOFFSETOF(VMXVVMCS, u32GuestDsAttr),
405	/* 14 */ RT_UOFFSETOF(VMXVVMCS, u32GuestFsAttr),
406	/* 15 */ RT_UOFFSETOF(VMXVVMCS, u32GuestGsAttr),
407	/* 16 */ RT_UOFFSETOF(VMXVVMCS, u32GuestLdtrAttr),
408	/* 17 */ RT_UOFFSETOF(VMXVVMCS, u32GuestTrAttr),
409	/* 18 */ RT_UOFFSETOF(VMXVVMCS, u32GuestIntrState),
410	/* 19 */ RT_UOFFSETOF(VMXVVMCS, u32GuestActivityState),
411	/* 20 */ RT_UOFFSETOF(VMXVVMCS, u32GuestSmBase),
412	/* 21 */ RT_UOFFSETOF(VMXVVMCS, u32GuestSysenterCS),
413	/* 22 */ UINT16_MAX,
414	/* 23 */ RT_UOFFSETOF(VMXVVMCS, u32PreemptTimer),
415	/* 24-31 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
416	/* 32-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX
417	},
418	/* VMX_VMCSFIELD_WIDTH_32BIT \| VMX_VMCSFIELD_TYPE_HOST_STATE: */
419	{
420	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u32HostSysenterCs),
421	/* 1-8 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
422	/* 9-16 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
423	/* 17-24 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
424	/* 25-32 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
425	/* 33-34 */ UINT16_MAX, UINT16_MAX
426	},
427	/* VMX_VMCSFIELD_WIDTH_NATURAL \| VMX_VMCSFIELD_TYPE_CONTROL: */
428	{
429	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64Cr0Mask),
430	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64Cr4Mask),
431	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64Cr0ReadShadow),
432	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64Cr4ReadShadow),
433	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64Cr3Target0),
434	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64Cr3Target1),
435	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u64Cr3Target2),
436	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u64Cr3Target3),
437	/* 8-15 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
438	/* 16-23 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
439	/* 24-27 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
440	/* 32-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX
441	},
442	/* VMX_VMCSFIELD_WIDTH_NATURAL \| VMX_VMCSFIELD_TYPE_VMEXIT_INFO: */
443	{
444	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64RoExitQual),
445	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64RoIoRcx),
446	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64RoIoRsi),
447	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64RoIoRdi),
448	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64RoIoRip),
449	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64RoGuestLinearAddr),
450	/* 6-13 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
451	/* 14-21 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
452	/* 22-29 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
453	/* 30-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
454	},
455	/* VMX_VMCSFIELD_WIDTH_NATURAL \| VMX_VMCSFIELD_TYPE_GUEST_STATE: */
456	{
457	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64GuestCr0),
458	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64GuestCr3),
459	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64GuestCr4),
460	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64GuestEsBase),
461	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64GuestCsBase),
462	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64GuestSsBase),
463	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u64GuestDsBase),
464	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u64GuestFsBase),
465	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u64GuestGsBase),
466	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u64GuestLdtrBase),
467	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u64GuestTrBase),
468	/* 11 */ RT_UOFFSETOF(VMXVVMCS, u64GuestGdtrBase),
469	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u64GuestIdtrBase),
470	/* 13 */ RT_UOFFSETOF(VMXVVMCS, u64GuestDr7),
471	/* 14 */ RT_UOFFSETOF(VMXVVMCS, u64GuestRsp),
472	/* 15 */ RT_UOFFSETOF(VMXVVMCS, u64GuestRip),
473	/* 16 */ RT_UOFFSETOF(VMXVVMCS, u64GuestRFlags),
474	/* 17 */ RT_UOFFSETOF(VMXVVMCS, u64GuestPendingDbgXcpts),
475	/* 18 */ RT_UOFFSETOF(VMXVVMCS, u64GuestSysenterEsp),
476	/* 19 */ RT_UOFFSETOF(VMXVVMCS, u64GuestSysenterEip),
477	/* 20 */ RT_UOFFSETOF(VMXVVMCS, u64GuestSCetMsr),
478	/* 21 */ RT_UOFFSETOF(VMXVVMCS, u64GuestSsp),
479	/* 22 */ RT_UOFFSETOF(VMXVVMCS, u64GuestIntrSspTableAddrMsr),
480	/* 23-27 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
481	/* 31-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
482	},
483	/* VMX_VMCSFIELD_WIDTH_NATURAL \| VMX_VMCSFIELD_TYPE_HOST_STATE: */
484	{
485	/* 0 */ RT_UOFFSETOF(VMXVVMCS, u64HostCr0),
486	/* 1 */ RT_UOFFSETOF(VMXVVMCS, u64HostCr3),
487	/* 2 */ RT_UOFFSETOF(VMXVVMCS, u64HostCr4),
488	/* 3 */ RT_UOFFSETOF(VMXVVMCS, u64HostFsBase),
489	/* 4 */ RT_UOFFSETOF(VMXVVMCS, u64HostGsBase),
490	/* 5 */ RT_UOFFSETOF(VMXVVMCS, u64HostTrBase),
491	/* 6 */ RT_UOFFSETOF(VMXVVMCS, u64HostGdtrBase),
492	/* 7 */ RT_UOFFSETOF(VMXVVMCS, u64HostIdtrBase),
493	/* 8 */ RT_UOFFSETOF(VMXVVMCS, u64HostSysenterEsp),
494	/* 9 */ RT_UOFFSETOF(VMXVVMCS, u64HostSysenterEip),
495	/* 10 */ RT_UOFFSETOF(VMXVVMCS, u64HostRsp),
496	/* 11 */ RT_UOFFSETOF(VMXVVMCS, u64HostRip),
497	/* 12 */ RT_UOFFSETOF(VMXVVMCS, u64HostSCetMsr),
498	/* 13 */ RT_UOFFSETOF(VMXVVMCS, u64HostSsp),
499	/* 14 */ RT_UOFFSETOF(VMXVVMCS, u64HostIntrSspTableAddrMsr),
500	/* 15-22 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
501	/* 23-30 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
502	/* 31-34 */ UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX
503	}
504	};
505
506
507	/**
508	* Gets a host selector from the VMCS.
509	*
510	* @param pVmcs Pointer to the virtual VMCS.
511	* @param iSelReg The index of the segment register (X86_SREG_XXX).
512	*/
513	DECLINLINE(RTSEL) iemVmxVmcsGetHostSelReg(PCVMXVVMCS pVmcs, uint8_t iSegReg)
514	{
515	Assert(iSegReg < X86_SREG_COUNT);
516	RTSEL HostSel;
517	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_16BIT;
518	uint8_t const uType = VMX_VMCSFIELD_TYPE_HOST_STATE;
519	uint8_t const uWidthType = (uWidth << 2) \| uType;
520	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS16_HOST_ES_SEL, VMX_BF_VMCSFIELD_INDEX);
521	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
522	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
523	uint8_t const pbVmcs = (uint8_t )pVmcs;
524	uint8_t const *pbField = pbVmcs + offField;
525	HostSel = (uint16_t )pbField;
526	return HostSel;
527	}
528
529
530	/**
531	* Sets a guest segment register in the VMCS.
532	*
533	* @param pVmcs Pointer to the virtual VMCS.
534	* @param iSegReg The index of the segment register (X86_SREG_XXX).
535	* @param pSelReg Pointer to the segment register.
536	*/
537	static void iemVmxVmcsSetGuestSegReg(PCVMXVVMCS pVmcs, uint8_t iSegReg, PCCPUMSELREG pSelReg) RT_NOEXCEPT
538	{
539	Assert(pSelReg);
540	Assert(iSegReg < X86_SREG_COUNT);
541
542	/* Selector. */
543	{
544	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_16BIT;
545	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
546	uint8_t const uWidthType = (uWidth << 2) \| uType;
547	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS16_GUEST_ES_SEL, VMX_BF_VMCSFIELD_INDEX);
548	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
549	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
550	uint8_t pbVmcs = (uint8_t )pVmcs;
551	uint8_t *pbField = pbVmcs + offField;
552	(uint16_t )pbField = pSelReg->Sel;
553	}
554
555	/* Limit. */
556	{
557	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_32BIT;
558	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
559	uint8_t const uWidthType = (uWidth << 2) \| uType;
560	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS32_GUEST_ES_LIMIT, VMX_BF_VMCSFIELD_INDEX);
561	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
562	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
563	uint8_t pbVmcs = (uint8_t )pVmcs;
564	uint8_t *pbField = pbVmcs + offField;
565	(uint32_t )pbField = pSelReg->u32Limit;
566	}
567
568	/* Base. */
569	{
570	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_NATURAL;
571	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
572	uint8_t const uWidthType = (uWidth << 2) \| uType;
573	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS_GUEST_ES_BASE, VMX_BF_VMCSFIELD_INDEX);
574	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
575	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
576	uint8_t const pbVmcs = (uint8_t )pVmcs;
577	uint8_t const *pbField = pbVmcs + offField;
578	(uint64_t )pbField = pSelReg->u64Base;
579	}
580
581	/* Attributes. */
582	{
583	uint32_t const fValidAttrMask = X86DESCATTR_TYPE \| X86DESCATTR_DT \| X86DESCATTR_DPL \| X86DESCATTR_P
584	\| X86DESCATTR_AVL \| X86DESCATTR_L \| X86DESCATTR_D \| X86DESCATTR_G
585	\| X86DESCATTR_UNUSABLE;
586	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_32BIT;
587	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
588	uint8_t const uWidthType = (uWidth << 2) \| uType;
589	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS32_GUEST_ES_ACCESS_RIGHTS, VMX_BF_VMCSFIELD_INDEX);
590	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
591	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
592	uint8_t pbVmcs = (uint8_t )pVmcs;
593	uint8_t *pbField = pbVmcs + offField;
594	(uint32_t )pbField = pSelReg->Attr.u & fValidAttrMask;
595	}
596	}
597
598
599	/**
600	* Gets a guest segment register from the VMCS.
601	*
602	* @returns VBox status code.
603	* @param pVmcs Pointer to the virtual VMCS.
604	* @param iSegReg The index of the segment register (X86_SREG_XXX).
605	* @param pSelReg Where to store the segment register (only updated when
606	* VINF_SUCCESS is returned).
607	*
608	* @remarks Warning! This does not validate the contents of the retrieved segment
609	* register.
610	*/
611	static int iemVmxVmcsGetGuestSegReg(PCVMXVVMCS pVmcs, uint8_t iSegReg, PCPUMSELREG pSelReg) RT_NOEXCEPT
612	{
613	Assert(pSelReg);
614	Assert(iSegReg < X86_SREG_COUNT);
615
616	/* Selector. */
617	uint16_t u16Sel;
618	{
619	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_16BIT;
620	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
621	uint8_t const uWidthType = (uWidth << 2) \| uType;
622	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS16_GUEST_ES_SEL, VMX_BF_VMCSFIELD_INDEX);
623	AssertReturn(uIndex <= VMX_V_VMCS_MAX_INDEX, VERR_IEM_IPE_3);
624	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
625	uint8_t const pbVmcs = (uint8_t )pVmcs;
626	uint8_t const *pbField = pbVmcs + offField;
627	u16Sel = (uint16_t )pbField;
628	}
629
630	/* Limit. */
631	uint32_t u32Limit;
632	{
633	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_32BIT;
634	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
635	uint8_t const uWidthType = (uWidth << 2) \| uType;
636	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS32_GUEST_ES_LIMIT, VMX_BF_VMCSFIELD_INDEX);
637	AssertReturn(uIndex <= VMX_V_VMCS_MAX_INDEX, VERR_IEM_IPE_3);
638	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
639	uint8_t const pbVmcs = (uint8_t )pVmcs;
640	uint8_t const *pbField = pbVmcs + offField;
641	u32Limit = (uint32_t )pbField;
642	}
643
644	/* Base. */
645	uint64_t u64Base;
646	{
647	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_NATURAL;
648	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
649	uint8_t const uWidthType = (uWidth << 2) \| uType;
650	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS_GUEST_ES_BASE, VMX_BF_VMCSFIELD_INDEX);
651	AssertReturn(uIndex <= VMX_V_VMCS_MAX_INDEX, VERR_IEM_IPE_3);
652	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
653	uint8_t const pbVmcs = (uint8_t )pVmcs;
654	uint8_t const *pbField = pbVmcs + offField;
655	u64Base = (uint64_t )pbField;
656	/** @todo NSTVMX: Should we zero out high bits here for 32-bit virtual CPUs? */
657	}
658
659	/* Attributes. */
660	uint32_t u32Attr;
661	{
662	uint8_t const uWidth = VMX_VMCSFIELD_WIDTH_32BIT;
663	uint8_t const uType = VMX_VMCSFIELD_TYPE_GUEST_STATE;
664	uint8_t const uWidthType = (uWidth << 2) \| uType;
665	uint8_t const uIndex = iSegReg + RT_BF_GET(VMX_VMCS32_GUEST_ES_ACCESS_RIGHTS, VMX_BF_VMCSFIELD_INDEX);
666	AssertReturn(uIndex <= VMX_V_VMCS_MAX_INDEX, VERR_IEM_IPE_3);
667	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
668	uint8_t const pbVmcs = (uint8_t )pVmcs;
669	uint8_t const *pbField = pbVmcs + offField;
670	u32Attr = (uint32_t )pbField;
671	}
672
673	pSelReg->Sel = u16Sel;
674	pSelReg->ValidSel = u16Sel;
675	pSelReg->fFlags = CPUMSELREG_FLAGS_VALID;
676	pSelReg->u32Limit = u32Limit;
677	pSelReg->u64Base = u64Base;
678	pSelReg->Attr.u = u32Attr;
679	return VINF_SUCCESS;
680	}
681
682
683	/**
684	* Converts an IEM exception event type to a VMX event type.
685	*
686	* @returns The VMX event type.
687	* @param uVector The interrupt / exception vector.
688	* @param fFlags The IEM event flag (see IEM_XCPT_FLAGS_XXX).
689	*/
690	DECLINLINE(uint8_t) iemVmxGetEventType(uint32_t uVector, uint32_t fFlags)
691	{
692	/* Paranoia (callers may use these interchangeably). */
693	AssertCompile(VMX_EXIT_INT_INFO_TYPE_NMI == VMX_IDT_VECTORING_INFO_TYPE_NMI);
694	AssertCompile(VMX_EXIT_INT_INFO_TYPE_HW_XCPT == VMX_IDT_VECTORING_INFO_TYPE_HW_XCPT);
695	AssertCompile(VMX_EXIT_INT_INFO_TYPE_EXT_INT == VMX_IDT_VECTORING_INFO_TYPE_EXT_INT);
696	AssertCompile(VMX_EXIT_INT_INFO_TYPE_SW_XCPT == VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT);
697	AssertCompile(VMX_EXIT_INT_INFO_TYPE_SW_INT == VMX_IDT_VECTORING_INFO_TYPE_SW_INT);
698	AssertCompile(VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT == VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT);
699	AssertCompile(VMX_EXIT_INT_INFO_TYPE_NMI == VMX_ENTRY_INT_INFO_TYPE_NMI);
700	AssertCompile(VMX_EXIT_INT_INFO_TYPE_HW_XCPT == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT);
701	AssertCompile(VMX_EXIT_INT_INFO_TYPE_EXT_INT == VMX_ENTRY_INT_INFO_TYPE_EXT_INT);
702	AssertCompile(VMX_EXIT_INT_INFO_TYPE_SW_XCPT == VMX_ENTRY_INT_INFO_TYPE_SW_XCPT);
703	AssertCompile(VMX_EXIT_INT_INFO_TYPE_SW_INT == VMX_ENTRY_INT_INFO_TYPE_SW_INT);
704	AssertCompile(VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT == VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT);
705
706	if (fFlags & IEM_XCPT_FLAGS_T_CPU_XCPT)
707	{
708	if (uVector == X86_XCPT_NMI)
709	return VMX_EXIT_INT_INFO_TYPE_NMI;
710	return VMX_EXIT_INT_INFO_TYPE_HW_XCPT;
711	}
712
713	if (fFlags & IEM_XCPT_FLAGS_T_SOFT_INT)
714	{
715	if (fFlags & (IEM_XCPT_FLAGS_BP_INSTR \| IEM_XCPT_FLAGS_OF_INSTR))
716	return VMX_EXIT_INT_INFO_TYPE_SW_XCPT;
717	if (fFlags & IEM_XCPT_FLAGS_ICEBP_INSTR)
718	return VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT;
719	return VMX_EXIT_INT_INFO_TYPE_SW_INT;
720	}
721
722	Assert(fFlags & IEM_XCPT_FLAGS_T_EXT_INT);
723	return VMX_EXIT_INT_INFO_TYPE_EXT_INT;
724	}
725
726
727	/**
728	* Determines whether the guest is using PAE paging given the VMCS.
729	*
730	* @returns @c true if PAE paging mode is used, @c false otherwise.
731	* @param pVmcs Pointer to the virtual VMCS.
732	*
733	* @warning Only use this prior to switching the guest-CPU state with the
734	* nested-guest CPU state!
735	*/
736	DECL_FORCE_INLINE(bool) iemVmxVmcsIsGuestPaePagingEnabled(PCVMXVVMCS pVmcs)
737	{
738	return ( !(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST)
739	&& (pVmcs->u64GuestCr4.u & X86_CR4_PAE)
740	&& (pVmcs->u64GuestCr0.u & X86_CR0_PG));
741	}
742
743
744	/**
745	* Sets the Exit qualification VMCS field.
746	*
747	* @param pVCpu The cross context virtual CPU structure.
748	* @param u64ExitQual The Exit qualification.
749	*/
750	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitQual(PVMCPUCC pVCpu, uint64_t u64ExitQual)
751	{
752	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64RoExitQual.u = u64ExitQual;
753	}
754
755
756	/**
757	* Sets the VM-exit interruption information field.
758	*
759	* @param pVCpu The cross context virtual CPU structure.
760	* @param uExitIntInfo The VM-exit interruption information.
761	*/
762	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitIntInfo(PVMCPUCC pVCpu, uint32_t uExitIntInfo)
763	{
764	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoExitIntInfo = uExitIntInfo;
765	}
766
767
768	/**
769	* Sets the VM-exit interruption error code.
770	*
771	* @param pVCpu The cross context virtual CPU structure.
772	* @param uErrCode The error code.
773	*/
774	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitIntErrCode(PVMCPUCC pVCpu, uint32_t uErrCode)
775	{
776	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoExitIntErrCode = uErrCode;
777	}
778
779
780	/**
781	* Sets the IDT-vectoring information field.
782	*
783	* @param pVCpu The cross context virtual CPU structure.
784	* @param uIdtVectorInfo The IDT-vectoring information.
785	*/
786	DECL_FORCE_INLINE(void) iemVmxVmcsSetIdtVectoringInfo(PVMCPUCC pVCpu, uint32_t uIdtVectorInfo)
787	{
788	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoIdtVectoringInfo = uIdtVectorInfo;
789	}
790
791
792	/**
793	* Sets the IDT-vectoring error code field.
794	*
795	* @param pVCpu The cross context virtual CPU structure.
796	* @param uErrCode The error code.
797	*/
798	DECL_FORCE_INLINE(void) iemVmxVmcsSetIdtVectoringErrCode(PVMCPUCC pVCpu, uint32_t uErrCode)
799	{
800	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoIdtVectoringErrCode = uErrCode;
801	}
802
803
804	/**
805	* Sets the VM-exit guest-linear address VMCS field.
806	*
807	* @param pVCpu The cross context virtual CPU structure.
808	* @param uGuestLinearAddr The VM-exit guest-linear address.
809	*/
810	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitGuestLinearAddr(PVMCPUCC pVCpu, uint64_t uGuestLinearAddr)
811	{
812	/* Bits 63:32 of guest-linear address MBZ if the guest isn't in long mode prior to the VM-exit. */
813	Assert(CPUMIsGuestInLongModeEx(IEM_GET_CTX(pVCpu)) \|\| !(uGuestLinearAddr & UINT64_C(0xffffffff00000000)));
814	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64RoGuestLinearAddr.u = uGuestLinearAddr;
815	}
816
817
818	/**
819	* Sets the VM-exit guest-physical address VMCS field.
820	*
821	* @param pVCpu The cross context virtual CPU structure.
822	* @param uGuestPhysAddr The VM-exit guest-physical address.
823	*/
824	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitGuestPhysAddr(PVMCPUCC pVCpu, uint64_t uGuestPhysAddr)
825	{
826	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64RoGuestPhysAddr.u = uGuestPhysAddr;
827	}
828
829
830	/**
831	* Sets the VM-exit instruction length VMCS field.
832	*
833	* @param pVCpu The cross context virtual CPU structure.
834	* @param cbInstr The VM-exit instruction length in bytes.
835	*
836	* @remarks Callers may clear this field to 0. Hence, this function does not check
837	* the validity of the instruction length.
838	*/
839	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitInstrLen(PVMCPUCC pVCpu, uint32_t cbInstr)
840	{
841	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoExitInstrLen = cbInstr;
842	}
843
844
845	/**
846	* Sets the VM-exit instruction info. VMCS field.
847	*
848	* @param pVCpu The cross context virtual CPU structure.
849	* @param uExitInstrInfo The VM-exit instruction information.
850	*/
851	DECL_FORCE_INLINE(void) iemVmxVmcsSetExitInstrInfo(PVMCPUCC pVCpu, uint32_t uExitInstrInfo)
852	{
853	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoExitInstrInfo = uExitInstrInfo;
854	}
855
856
857	/**
858	* Sets the guest pending-debug exceptions field.
859	*
860	* @param pVCpu The cross context virtual CPU structure.
861	* @param uGuestPendingDbgXcpts The guest pending-debug exceptions.
862	*/
863	DECL_FORCE_INLINE(void) iemVmxVmcsSetGuestPendingDbgXcpts(PVMCPUCC pVCpu, uint64_t uGuestPendingDbgXcpts)
864	{
865	Assert(!(uGuestPendingDbgXcpts & VMX_VMCS_GUEST_PENDING_DEBUG_VALID_MASK));
866	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64GuestPendingDbgXcpts.u = uGuestPendingDbgXcpts;
867	}
868
869
870	/**
871	* Implements VMSucceed for VMX instruction success.
872	*
873	* @param pVCpu The cross context virtual CPU structure.
874	*/
875	DECL_FORCE_INLINE(void) iemVmxVmSucceed(PVMCPUCC pVCpu)
876	{
877	return CPUMSetGuestVmxVmSucceed(&pVCpu->cpum.GstCtx);
878	}
879
880
881	/**
882	* Implements VMFailInvalid for VMX instruction failure.
883	*
884	* @param pVCpu The cross context virtual CPU structure.
885	*/
886	DECL_FORCE_INLINE(void) iemVmxVmFailInvalid(PVMCPUCC pVCpu)
887	{
888	return CPUMSetGuestVmxVmFailInvalid(&pVCpu->cpum.GstCtx);
889	}
890
891
892	/**
893	* Implements VMFail for VMX instruction failure.
894	*
895	* @param pVCpu The cross context virtual CPU structure.
896	* @param enmInsErr The VM instruction error.
897	*/
898	DECL_FORCE_INLINE(void) iemVmxVmFail(PVMCPUCC pVCpu, VMXINSTRERR enmInsErr)
899	{
900	return CPUMSetGuestVmxVmFail(&pVCpu->cpum.GstCtx, enmInsErr);
901	}
902
903
904	/**
905	* Checks if the given auto-load/store MSR area count is valid for the
906	* implementation.
907	*
908	* @returns @c true if it's within the valid limit, @c false otherwise.
909	* @param pVCpu The cross context virtual CPU structure.
910	* @param uMsrCount The MSR area count to check.
911	*/
912	DECL_FORCE_INLINE(bool) iemVmxIsAutoMsrCountValid(PCVMCPU pVCpu, uint32_t uMsrCount)
913	{
914	uint64_t const u64VmxMiscMsr = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Misc;
915	uint32_t const cMaxSupportedMsrs = VMX_MISC_MAX_MSRS(u64VmxMiscMsr);
916	Assert(cMaxSupportedMsrs <= VMX_V_AUTOMSR_AREA_SIZE / sizeof(VMXAUTOMSR));
917	if (uMsrCount <= cMaxSupportedMsrs)
918	return true;
919	return false;
920	}
921
922
923	/**
924	* Flushes the current VMCS contents back to guest memory.
925	*
926	* @returns VBox status code.
927	* @param pVCpu The cross context virtual CPU structure.
928	*/
929	DECL_FORCE_INLINE(int) iemVmxWriteCurrentVmcsToGstMem(PVMCPUCC pVCpu)
930	{
931	Assert(IEM_VMX_HAS_CURRENT_VMCS(pVCpu));
932	int rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), IEM_VMX_GET_CURRENT_VMCS(pVCpu),
933	&pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs, sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs));
934	return rc;
935	}
936
937
938	/**
939	* Populates the current VMCS contents from guest memory.
940	*
941	* @returns VBox status code.
942	* @param pVCpu The cross context virtual CPU structure.
943	*/
944	DECL_FORCE_INLINE(int) iemVmxReadCurrentVmcsFromGstMem(PVMCPUCC pVCpu)
945	{
946	Assert(IEM_VMX_HAS_CURRENT_VMCS(pVCpu));
947	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs,
948	IEM_VMX_GET_CURRENT_VMCS(pVCpu), sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs));
949	return rc;
950	}
951
952
953	/**
954	* Gets the instruction diagnostic for segment base checks during VM-entry of a
955	* nested-guest.
956	*
957	* @param iSegReg The segment index (X86_SREG_XXX).
958	*/
959	static VMXVDIAG iemVmxGetDiagVmentrySegBase(unsigned iSegReg) RT_NOEXCEPT
960	{
961	switch (iSegReg)
962	{
963	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegBaseCs;
964	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegBaseDs;
965	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegBaseEs;
966	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegBaseFs;
967	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegBaseGs;
968	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegBaseSs;
969	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_1);
970	}
971	}
972
973
974	/**
975	* Gets the instruction diagnostic for segment base checks during VM-entry of a
976	* nested-guest that is in Virtual-8086 mode.
977	*
978	* @param iSegReg The segment index (X86_SREG_XXX).
979	*/
980	static VMXVDIAG iemVmxGetDiagVmentrySegBaseV86(unsigned iSegReg) RT_NOEXCEPT
981	{
982	switch (iSegReg)
983	{
984	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegBaseV86Cs;
985	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegBaseV86Ds;
986	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegBaseV86Es;
987	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegBaseV86Fs;
988	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegBaseV86Gs;
989	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegBaseV86Ss;
990	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_2);
991	}
992	}
993
994
995	/**
996	* Gets the instruction diagnostic for segment limit checks during VM-entry of a
997	* nested-guest that is in Virtual-8086 mode.
998	*
999	* @param iSegReg The segment index (X86_SREG_XXX).
1000	*/
1001	static VMXVDIAG iemVmxGetDiagVmentrySegLimitV86(unsigned iSegReg) RT_NOEXCEPT
1002	{
1003	switch (iSegReg)
1004	{
1005	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegLimitV86Cs;
1006	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegLimitV86Ds;
1007	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegLimitV86Es;
1008	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegLimitV86Fs;
1009	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegLimitV86Gs;
1010	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegLimitV86Ss;
1011	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_3);
1012	}
1013	}
1014
1015
1016	/**
1017	* Gets the instruction diagnostic for segment attribute checks during VM-entry of a
1018	* nested-guest that is in Virtual-8086 mode.
1019	*
1020	* @param iSegReg The segment index (X86_SREG_XXX).
1021	*/
1022	static VMXVDIAG iemVmxGetDiagVmentrySegAttrV86(unsigned iSegReg) RT_NOEXCEPT
1023	{
1024	switch (iSegReg)
1025	{
1026	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrV86Cs;
1027	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrV86Ds;
1028	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrV86Es;
1029	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrV86Fs;
1030	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrV86Gs;
1031	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrV86Ss;
1032	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_4);
1033	}
1034	}
1035
1036
1037	/**
1038	* Gets the instruction diagnostic for segment attributes reserved bits failure
1039	* during VM-entry of a nested-guest.
1040	*
1041	* @param iSegReg The segment index (X86_SREG_XXX).
1042	*/
1043	static VMXVDIAG iemVmxGetDiagVmentrySegAttrRsvd(unsigned iSegReg) RT_NOEXCEPT
1044	{
1045	switch (iSegReg)
1046	{
1047	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrRsvdCs;
1048	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrRsvdDs;
1049	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrRsvdEs;
1050	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrRsvdFs;
1051	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrRsvdGs;
1052	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrRsvdSs;
1053	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_5);
1054	}
1055	}
1056
1057
1058	/**
1059	* Gets the instruction diagnostic for segment attributes descriptor-type
1060	* (code/segment or system) failure during VM-entry of a nested-guest.
1061	*
1062	* @param iSegReg The segment index (X86_SREG_XXX).
1063	*/
1064	static VMXVDIAG iemVmxGetDiagVmentrySegAttrDescType(unsigned iSegReg) RT_NOEXCEPT
1065	{
1066	switch (iSegReg)
1067	{
1068	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeCs;
1069	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeDs;
1070	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeEs;
1071	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeFs;
1072	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeGs;
1073	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrDescTypeSs;
1074	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_6);
1075	}
1076	}
1077
1078
1079	/**
1080	* Gets the instruction diagnostic for segment attributes descriptor-type
1081	* (code/segment or system) failure during VM-entry of a nested-guest.
1082	*
1083	* @param iSegReg The segment index (X86_SREG_XXX).
1084	*/
1085	static VMXVDIAG iemVmxGetDiagVmentrySegAttrPresent(unsigned iSegReg) RT_NOEXCEPT
1086	{
1087	switch (iSegReg)
1088	{
1089	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrPresentCs;
1090	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrPresentDs;
1091	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrPresentEs;
1092	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrPresentFs;
1093	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrPresentGs;
1094	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrPresentSs;
1095	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_7);
1096	}
1097	}
1098
1099
1100	/**
1101	* Gets the instruction diagnostic for segment attribute granularity failure during
1102	* VM-entry of a nested-guest.
1103	*
1104	* @param iSegReg The segment index (X86_SREG_XXX).
1105	*/
1106	static VMXVDIAG iemVmxGetDiagVmentrySegAttrGran(unsigned iSegReg) RT_NOEXCEPT
1107	{
1108	switch (iSegReg)
1109	{
1110	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrGranCs;
1111	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrGranDs;
1112	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrGranEs;
1113	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrGranFs;
1114	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrGranGs;
1115	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrGranSs;
1116	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_8);
1117	}
1118	}
1119
1120	/**
1121	* Gets the instruction diagnostic for segment attribute DPL/RPL failure during
1122	* VM-entry of a nested-guest.
1123	*
1124	* @param iSegReg The segment index (X86_SREG_XXX).
1125	*/
1126	static VMXVDIAG iemVmxGetDiagVmentrySegAttrDplRpl(unsigned iSegReg) RT_NOEXCEPT
1127	{
1128	switch (iSegReg)
1129	{
1130	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrDplRplCs;
1131	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrDplRplDs;
1132	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrDplRplEs;
1133	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrDplRplFs;
1134	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrDplRplGs;
1135	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrDplRplSs;
1136	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_9);
1137	}
1138	}
1139
1140
1141	/**
1142	* Gets the instruction diagnostic for segment attribute type accessed failure
1143	* during VM-entry of a nested-guest.
1144	*
1145	* @param iSegReg The segment index (X86_SREG_XXX).
1146	*/
1147	static VMXVDIAG iemVmxGetDiagVmentrySegAttrTypeAcc(unsigned iSegReg) RT_NOEXCEPT
1148	{
1149	switch (iSegReg)
1150	{
1151	case X86_SREG_CS: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccCs;
1152	case X86_SREG_DS: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccDs;
1153	case X86_SREG_ES: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccEs;
1154	case X86_SREG_FS: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccFs;
1155	case X86_SREG_GS: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccGs;
1156	case X86_SREG_SS: return kVmxVDiag_Vmentry_GuestSegAttrTypeAccSs;
1157	IEM_NOT_REACHED_DEFAULT_CASE_RET2(kVmxVDiag_Ipe_10);
1158	}
1159	}
1160
1161
1162	/**
1163	* Saves the guest control registers, debug registers and some MSRs are part of
1164	* VM-exit.
1165	*
1166	* @param pVCpu The cross context virtual CPU structure.
1167	*/
1168	static void iemVmxVmexitSaveGuestControlRegsMsrs(PVMCPUCC pVCpu) RT_NOEXCEPT
1169	{
1170	/*
1171	* Saves the guest control registers, debug registers and some MSRs.
1172	* See Intel spec. 27.3.1 "Saving Control Registers, Debug Registers and MSRs".
1173	*/
1174	PVMXVVMCS pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1175
1176	/* Save control registers. */
1177	pVmcs->u64GuestCr0.u = pVCpu->cpum.GstCtx.cr0;
1178	pVmcs->u64GuestCr3.u = pVCpu->cpum.GstCtx.cr3;
1179	pVmcs->u64GuestCr4.u = pVCpu->cpum.GstCtx.cr4;
1180
1181	/* Save SYSENTER CS, ESP, EIP. */
1182	pVmcs->u32GuestSysenterCS = pVCpu->cpum.GstCtx.SysEnter.cs;
1183	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
1184	{
1185	pVmcs->u64GuestSysenterEsp.u = pVCpu->cpum.GstCtx.SysEnter.esp;
1186	pVmcs->u64GuestSysenterEip.u = pVCpu->cpum.GstCtx.SysEnter.eip;
1187	}
1188	else
1189	{
1190	pVmcs->u64GuestSysenterEsp.s.Lo = pVCpu->cpum.GstCtx.SysEnter.esp;
1191	pVmcs->u64GuestSysenterEip.s.Lo = pVCpu->cpum.GstCtx.SysEnter.eip;
1192	}
1193
1194	/* Save debug registers (DR7 and IA32_DEBUGCTL MSR). */
1195	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_SAVE_DEBUG)
1196	{
1197	pVmcs->u64GuestDr7.u = pVCpu->cpum.GstCtx.dr[7];
1198	/** @todo NSTVMX: Support IA32_DEBUGCTL MSR */
1199	}
1200
1201	/* Save PAT MSR. */
1202	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_SAVE_PAT_MSR)
1203	pVmcs->u64GuestPatMsr.u = pVCpu->cpum.GstCtx.msrPAT;
1204
1205	/* Save EFER MSR. */
1206	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_SAVE_EFER_MSR)
1207	pVmcs->u64GuestEferMsr.u = pVCpu->cpum.GstCtx.msrEFER;
1208
1209	/* We don't support clearing IA32_BNDCFGS MSR yet. */
1210	Assert(!(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_CLEAR_BNDCFGS_MSR));
1211
1212	/* Nothing to do for SMBASE register - We don't support SMM yet. */
1213	}
1214
1215
1216	/**
1217	* Saves the guest force-flags in preparation of entering the nested-guest.
1218	*
1219	* @param pVCpu The cross context virtual CPU structure.
1220	*/
1221	static void iemVmxVmentrySaveNmiBlockingFF(PVMCPUCC pVCpu) RT_NOEXCEPT
1222	{
1223	/* We shouldn't be called multiple times during VM-entry. */
1224	Assert(pVCpu->cpum.GstCtx.hwvirt.fSavedInhibit == 0);
1225
1226	/* MTF should not be set outside VMX non-root mode. */
1227	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_MTF));
1228
1229	/*
1230	* Preserve the required force-flags.
1231	*
1232	* We cache and clear force-flags that would affect the execution of the
1233	* nested-guest. Cached flags are then restored while returning to the guest
1234	* if necessary.
1235	*
1236	* - VMCPU_FF_INHIBIT_INTERRUPTS need not be cached as it only affects
1237	* interrupts until the completion of the current VMLAUNCH/VMRESUME
1238	* instruction. Interrupt inhibition for any nested-guest instruction
1239	* is supplied by the guest-interruptibility state VMCS field and will
1240	* be set up as part of loading the guest state. Technically
1241	* blocking-by-STI is possible with VMLAUNCH/VMRESUME but we currently
1242	* disallow it since we can't distinguish it from blocking-by-MovSS
1243	* and no nested-hypervisor we care about uses STI immediately
1244	* followed by VMLAUNCH/VMRESUME.
1245	*
1246	* - VMCPU_FF_BLOCK_NMIS needs to be cached as VM-exits caused before
1247	* successful VM-entry (due to invalid guest-state) need to continue
1248	* blocking NMIs if it was in effect before VM-entry.
1249	*
1250	* - MTF need not be preserved as it's used only in VMX non-root mode and
1251	* is supplied through the VM-execution controls.
1252	*
1253	* The remaining FFs (e.g. timers, APIC updates) can stay in place so that
1254	* we will be able to generate interrupts that may cause VM-exits for
1255	* the nested-guest.
1256	*/
1257	pVCpu->cpum.GstCtx.hwvirt.fSavedInhibit = pVCpu->cpum.GstCtx.eflags.uBoth & CPUMCTX_INHIBIT_NMI;
1258	}
1259
1260
1261	/**
1262	* Restores the guest force-flags in preparation of exiting the nested-guest.
1263	*
1264	* @param pVCpu The cross context virtual CPU structure.
1265	*/
1266	static void iemVmxVmexitRestoreNmiBlockingFF(PVMCPUCC pVCpu) RT_NOEXCEPT
1267	{
1268	/** @todo r=bird: why aren't we clearing the nested guest flags first here?
1269	* If there is some other code doing that already, it would be great
1270	* to point to it here... */
1271	pVCpu->cpum.GstCtx.eflags.uBoth \|= pVCpu->cpum.GstCtx.hwvirt.fSavedInhibit;
1272	pVCpu->cpum.GstCtx.hwvirt.fSavedInhibit = 0;
1273	}
1274
1275
1276	/**
1277	* Performs the VMX transition to/from VMX non-root mode.
1278	*
1279	* @param pVCpu The cross context virtual CPU structure.
1280	* @param cbInstr The length of the current instruction.
1281	*/
1282	static int iemVmxTransition(PVMCPUCC pVCpu, uint8_t cbInstr) RT_NOEXCEPT
1283	{
1284	/*
1285	* Inform PGM about paging mode changes.
1286	* We include X86_CR0_PE because PGM doesn't handle paged-real mode yet,
1287	* see comment in iemMemPageTranslateAndCheckAccess().
1288	*/
1289	int rc = PGMChangeMode(pVCpu, pVCpu->cpum.GstCtx.cr0 \| X86_CR0_PE, pVCpu->cpum.GstCtx.cr4, pVCpu->cpum.GstCtx.msrEFER,
1290	true /* fForce */);
1291	if (RT_SUCCESS(rc))
1292	{ /* likely */ }
1293	else
1294	return rc;
1295
1296	/* Invalidate IEM TLBs now that we've forced a PGM mode change. */
1297	IEMTlbInvalidateAll(pVCpu);
1298
1299	/* Inform CPUM (recompiler), can later be removed. */
1300	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL);
1301
1302	/* Re-initialize IEM cache/state after the drastic mode switch. */
1303	iemReInitExec(pVCpu, cbInstr);
1304	return rc;
1305	}
1306
1307
1308	/**
1309	* Calculates the current VMX-preemption timer value.
1310	*
1311	* @returns The current VMX-preemption timer value.
1312	* @param pVCpu The cross context virtual CPU structure.
1313	*/
1314	static uint32_t iemVmxCalcPreemptTimer(PVMCPUCC pVCpu) RT_NOEXCEPT
1315	{
1316	/*
1317	* Assume the following:
1318	* PreemptTimerShift = 5
1319	* VmcsPreemptTimer = 2 (i.e. need to decrement by 1 every 2 * RT_BIT(5) = 20000 TSC ticks)
1320	* EntryTick = 50000 (TSC at time of VM-entry)
1321	*
1322	* CurTick Delta PreemptTimerVal
1323	* ----------------------------------
1324	* 60000 10000 2
1325	* 80000 30000 1
1326	* 90000 40000 0 -> VM-exit.
1327	*
1328	* If Delta >= VmcsPreemptTimer * RT_BIT(PreemptTimerShift) cause a VMX-preemption timer VM-exit.
1329	* The saved VMX-preemption timer value is calculated as follows:
1330	* PreemptTimerVal = VmcsPreemptTimer - (Delta / (VmcsPreemptTimer * RT_BIT(PreemptTimerShift)))
1331	* E.g.:
1332	* Delta = 10000
1333	* Tmp = 10000 / (2 * 10000) = 0.5
1334	* NewPt = 2 - 0.5 = 2
1335	* Delta = 30000
1336	* Tmp = 30000 / (2 * 10000) = 1.5
1337	* NewPt = 2 - 1.5 = 1
1338	* Delta = 40000
1339	* Tmp = 40000 / 20000 = 2
1340	* NewPt = 2 - 2 = 0
1341	*/
1342	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_HWVIRT);
1343	uint32_t const uVmcsPreemptVal = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32PreemptTimer;
1344	if (uVmcsPreemptVal > 0)
1345	{
1346	uint64_t const uCurTick = TMCpuTickGetNoCheck(pVCpu);
1347	uint64_t const uEntryTick = pVCpu->cpum.GstCtx.hwvirt.vmx.uEntryTick;
1348	uint64_t const uDelta = uCurTick - uEntryTick;
1349	uint32_t const uPreemptTimer = uVmcsPreemptVal
1350	- ASMDivU64ByU32RetU32(uDelta, uVmcsPreemptVal * RT_BIT(VMX_V_PREEMPT_TIMER_SHIFT));
1351	return uPreemptTimer;
1352	}
1353	return 0;
1354	}
1355
1356
1357	/**
1358	* Saves guest segment registers, GDTR, IDTR, LDTR, TR as part of VM-exit.
1359	*
1360	* @param pVCpu The cross context virtual CPU structure.
1361	*/
1362	static void iemVmxVmexitSaveGuestSegRegs(PVMCPUCC pVCpu) RT_NOEXCEPT
1363	{
1364	/*
1365	* Save guest segment registers, GDTR, IDTR, LDTR, TR.
1366	* See Intel spec 27.3.2 "Saving Segment Registers and Descriptor-Table Registers".
1367	*/
1368	/* CS, SS, ES, DS, FS, GS. */
1369	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1370	for (unsigned iSegReg = 0; iSegReg < X86_SREG_COUNT; iSegReg++)
1371	{
1372	PCCPUMSELREG pSelReg = &pVCpu->cpum.GstCtx.aSRegs[iSegReg];
1373	if (!pSelReg->Attr.n.u1Unusable)
1374	iemVmxVmcsSetGuestSegReg(pVmcs, iSegReg, pSelReg);
1375	else
1376	{
1377	/*
1378	* For unusable segments the attributes are undefined except for CS and SS.
1379	* For the rest we don't bother preserving anything but the unusable bit.
1380	*/
1381	switch (iSegReg)
1382	{
1383	case X86_SREG_CS:
1384	pVmcs->GuestCs = pSelReg->Sel;
1385	pVmcs->u64GuestCsBase.u = pSelReg->u64Base;
1386	pVmcs->u32GuestCsLimit = pSelReg->u32Limit;
1387	pVmcs->u32GuestCsAttr = pSelReg->Attr.u & ( X86DESCATTR_L \| X86DESCATTR_D \| X86DESCATTR_G
1388	\| X86DESCATTR_UNUSABLE);
1389	break;
1390
1391	case X86_SREG_SS:
1392	pVmcs->GuestSs = pSelReg->Sel;
1393	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
1394	pVmcs->u64GuestSsBase.u &= UINT32_C(0xffffffff);
1395	pVmcs->u32GuestSsAttr = pSelReg->Attr.u & (X86DESCATTR_DPL \| X86DESCATTR_UNUSABLE);
1396	break;
1397
1398	case X86_SREG_DS:
1399	pVmcs->GuestDs = pSelReg->Sel;
1400	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
1401	pVmcs->u64GuestDsBase.u &= UINT32_C(0xffffffff);
1402	pVmcs->u32GuestDsAttr = X86DESCATTR_UNUSABLE;
1403	break;
1404
1405	case X86_SREG_ES:
1406	pVmcs->GuestEs = pSelReg->Sel;
1407	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
1408	pVmcs->u64GuestEsBase.u &= UINT32_C(0xffffffff);
1409	pVmcs->u32GuestEsAttr = X86DESCATTR_UNUSABLE;
1410	break;
1411
1412	case X86_SREG_FS:
1413	pVmcs->GuestFs = pSelReg->Sel;
1414	pVmcs->u64GuestFsBase.u = pSelReg->u64Base;
1415	pVmcs->u32GuestFsAttr = X86DESCATTR_UNUSABLE;
1416	break;
1417
1418	case X86_SREG_GS:
1419	pVmcs->GuestGs = pSelReg->Sel;
1420	pVmcs->u64GuestGsBase.u = pSelReg->u64Base;
1421	pVmcs->u32GuestGsAttr = X86DESCATTR_UNUSABLE;
1422	break;
1423	}
1424	}
1425	}
1426
1427	/* Segment attribute bits 31:17 and 11:8 MBZ. */
1428	uint32_t const fValidAttrMask = X86DESCATTR_TYPE \| X86DESCATTR_DT \| X86DESCATTR_DPL \| X86DESCATTR_P
1429	\| X86DESCATTR_AVL \| X86DESCATTR_L \| X86DESCATTR_D \| X86DESCATTR_G
1430	\| X86DESCATTR_UNUSABLE;
1431	/* LDTR. */
1432	{
1433	PCCPUMSELREG pSelReg = &pVCpu->cpum.GstCtx.ldtr;
1434	pVmcs->GuestLdtr = pSelReg->Sel;
1435	pVmcs->u64GuestLdtrBase.u = pSelReg->u64Base;
1436	Assert(X86_IS_CANONICAL(pSelReg->u64Base));
1437	pVmcs->u32GuestLdtrLimit = pSelReg->u32Limit;
1438	pVmcs->u32GuestLdtrAttr = pSelReg->Attr.u & fValidAttrMask;
1439	}
1440
1441	/* TR. */
1442	{
1443	PCCPUMSELREG pSelReg = &pVCpu->cpum.GstCtx.tr;
1444	pVmcs->GuestTr = pSelReg->Sel;
1445	pVmcs->u64GuestTrBase.u = pSelReg->u64Base;
1446	pVmcs->u32GuestTrLimit = pSelReg->u32Limit;
1447	pVmcs->u32GuestTrAttr = pSelReg->Attr.u & fValidAttrMask;
1448	}
1449
1450	/* GDTR. */
1451	pVmcs->u64GuestGdtrBase.u = pVCpu->cpum.GstCtx.gdtr.pGdt;
1452	pVmcs->u32GuestGdtrLimit = pVCpu->cpum.GstCtx.gdtr.cbGdt;
1453
1454	/* IDTR. */
1455	pVmcs->u64GuestIdtrBase.u = pVCpu->cpum.GstCtx.idtr.pIdt;
1456	pVmcs->u32GuestIdtrLimit = pVCpu->cpum.GstCtx.idtr.cbIdt;
1457	}
1458
1459
1460	/**
1461	* Saves guest non-register state as part of VM-exit.
1462	*
1463	* @param pVCpu The cross context virtual CPU structure.
1464	* @param uExitReason The VM-exit reason.
1465	*/
1466	static void iemVmxVmexitSaveGuestNonRegState(PVMCPUCC pVCpu, uint32_t uExitReason) RT_NOEXCEPT
1467	{
1468	/*
1469	* Save guest non-register state.
1470	* See Intel spec. 27.3.4 "Saving Non-Register State".
1471	*/
1472	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1473
1474	/*
1475	* Activity state.
1476	* Most VM-exits will occur in the active state. However, if the first instruction
1477	* following the VM-entry is a HLT instruction, and the MTF VM-execution control is set,
1478	* the VM-exit will be from the HLT activity state.
1479	*
1480	* See Intel spec. 25.5.2 "Monitor Trap Flag".
1481	*/
1482	/** @todo NSTVMX: Does triple-fault VM-exit reflect a shutdown activity state or
1483	* not? */
1484	EMSTATE const enmActivityState = EMGetState(pVCpu);
1485	switch (enmActivityState)
1486	{
1487	case EMSTATE_HALTED: pVmcs->u32GuestActivityState = VMX_VMCS_GUEST_ACTIVITY_HLT; break;
1488	default: pVmcs->u32GuestActivityState = VMX_VMCS_GUEST_ACTIVITY_ACTIVE; break;
1489	}
1490
1491	/*
1492	* Interruptibility-state.
1493	*/
1494	/* NMI. */
1495	pVmcs->u32GuestIntrState = 0;
1496	if (pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
1497	{
1498	if (pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking)
1499	pVmcs->u32GuestIntrState \|= VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI;
1500	}
1501	else
1502	{
1503	if (CPUMAreInterruptsInhibitedByNmi(&pVCpu->cpum.GstCtx))
1504	pVmcs->u32GuestIntrState \|= VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI;
1505	}
1506
1507	/* Blocking-by-STI or blocking-by-MovSS. */
1508	uint32_t fInhibitShw;
1509	if (!CPUMIsInInterruptShadowWithUpdateEx(&pVCpu->cpum.GstCtx, &fInhibitShw))
1510	{ /* probable */}
1511	else
1512	{
1513	if (pVCpu->cpum.GstCtx.rip == pVCpu->cpum.GstCtx.uRipInhibitInt)
1514	{
1515	/*
1516	* We must ensure only one of these bits is set.
1517	* Our emulation can have both set (perhaps because AMD doesn't distinguish
1518	* between the two?). Hence, the 'else' with blocking-by-MovSS taking priority
1519	* since it blocks more. Nested Ubuntu 22.04.2 running inside a Hyper-V enabled
1520	* Windows Server 2008 R2 guest runs into this issue.
1521	*
1522	* See Intel spec. 26.3.1.5 "Checks on Guest Non-Register State".
1523	*/
1524	if (fInhibitShw & CPUMCTX_INHIBIT_SHADOW_SS)
1525	pVmcs->u32GuestIntrState \|= VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS;
1526	else
1527	{
1528	Assert(fInhibitShw & CPUMCTX_INHIBIT_SHADOW_STI);
1529	pVmcs->u32GuestIntrState \|= VMX_VMCS_GUEST_INT_STATE_BLOCK_STI;
1530	}
1531	}
1532	}
1533	/* Nothing to do for SMI/enclave. We don't support enclaves or SMM yet. */
1534
1535	/*
1536	* Pending debug exceptions.
1537	*
1538	* For VM-exits where it is not applicable, we can safely zero out the field.
1539	* For VM-exits where it is applicable, it's expected to be updated by the caller already.
1540	*/
1541	if ( uExitReason != VMX_EXIT_INIT_SIGNAL
1542	&& uExitReason != VMX_EXIT_SMI
1543	&& uExitReason != VMX_EXIT_ERR_MACHINE_CHECK
1544	&& !VMXIsVmexitTrapLike(uExitReason))
1545	{
1546	/** @todo NSTVMX: also must exclude VM-exits caused by debug exceptions when
1547	* block-by-MovSS is in effect. */
1548	pVmcs->u64GuestPendingDbgXcpts.u = 0;
1549	}
1550
1551	/*
1552	* Save the VMX-preemption timer value back into the VMCS if the feature is enabled.
1553	*
1554	* For VMX-preemption timer VM-exits, we should have already written back 0 if the
1555	* feature is supported back into the VMCS, and thus there is nothing further to do here.
1556	*/
1557	if ( uExitReason != VMX_EXIT_PREEMPT_TIMER
1558	&& (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_SAVE_PREEMPT_TIMER))
1559	pVmcs->u32PreemptTimer = iemVmxCalcPreemptTimer(pVCpu);
1560
1561	/*
1562	* Save the guest PAE PDPTEs.
1563	*/
1564	if ( !CPUMIsGuestInPAEModeEx(&pVCpu->cpum.GstCtx)
1565	\|\| !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT))
1566	{
1567	/*
1568	* Without EPT or when the nested-guest is not using PAE paging, the values saved
1569	* in the VMCS during VM-exit are undefined. We zero them here for consistency.
1570	*/
1571	pVmcs->u64GuestPdpte0.u = 0;
1572	pVmcs->u64GuestPdpte1.u = 0;
1573	pVmcs->u64GuestPdpte2.u = 0;
1574	pVmcs->u64GuestPdpte3.u = 0;
1575	}
1576	else
1577	{
1578	/*
1579	* With EPT and when the nested-guest is using PAE paging, we update the PDPTEs from
1580	* the nested-guest CPU context. Both IEM (Mov CRx) and hardware-assisted execution
1581	* of the nested-guest is expected to have updated them.
1582	*/
1583	pVmcs->u64GuestPdpte0.u = pVCpu->cpum.GstCtx.aPaePdpes[0].u;
1584	pVmcs->u64GuestPdpte1.u = pVCpu->cpum.GstCtx.aPaePdpes[1].u;
1585	pVmcs->u64GuestPdpte2.u = pVCpu->cpum.GstCtx.aPaePdpes[2].u;
1586	pVmcs->u64GuestPdpte3.u = pVCpu->cpum.GstCtx.aPaePdpes[3].u;
1587	}
1588
1589	/* Clear PGM's copy of the EPT pointer for added safety. */
1590	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT)
1591	PGMSetGuestEptPtr(pVCpu, 0 /* uEptPtr */);
1592	}
1593
1594
1595	/**
1596	* Saves the guest-state as part of VM-exit.
1597	*
1598	* @returns VBox status code.
1599	* @param pVCpu The cross context virtual CPU structure.
1600	* @param uExitReason The VM-exit reason.
1601	*/
1602	static void iemVmxVmexitSaveGuestState(PVMCPUCC pVCpu, uint32_t uExitReason) RT_NOEXCEPT
1603	{
1604	iemVmxVmexitSaveGuestControlRegsMsrs(pVCpu);
1605	iemVmxVmexitSaveGuestSegRegs(pVCpu);
1606
1607	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64GuestRip.u = pVCpu->cpum.GstCtx.rip;
1608	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64GuestRsp.u = pVCpu->cpum.GstCtx.rsp;
1609	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64GuestRFlags.u = pVCpu->cpum.GstCtx.rflags.u; /** @todo NSTVMX: Check RFLAGS.RF handling. */
1610
1611	iemVmxVmexitSaveGuestNonRegState(pVCpu, uExitReason);
1612	}
1613
1614
1615	/**
1616	* Saves the guest MSRs into the VM-exit MSR-store area as part of VM-exit.
1617	*
1618	* @returns VBox status code.
1619	* @param pVCpu The cross context virtual CPU structure.
1620	* @param uExitReason The VM-exit reason (for diagnostic purposes).
1621	*/
1622	static int iemVmxVmexitSaveGuestAutoMsrs(PVMCPUCC pVCpu, uint32_t uExitReason) RT_NOEXCEPT
1623	{
1624	/*
1625	* Save guest MSRs.
1626	* See Intel spec. 27.4 "Saving MSRs".
1627	*/
1628	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1629	const char * const pszFailure = "VMX-abort";
1630
1631	/*
1632	* The VM-exit MSR-store area address need not be a valid guest-physical address if the
1633	* VM-exit MSR-store count is 0. If this is the case, bail early without reading it.
1634	* See Intel spec. 24.7.2 "VM-Exit Controls for MSRs".
1635	*/
1636	uint32_t const cMsrs = RT_MIN(pVmcs->u32ExitMsrStoreCount, RT_ELEMENTS(pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrStoreArea));
1637	if (!cMsrs)
1638	return VINF_SUCCESS;
1639
1640	/*
1641	* Verify the MSR auto-store count. Physical CPUs can behave unpredictably if the count
1642	* is exceeded including possibly raising #MC exceptions during VMX transition. Our
1643	* implementation causes a VMX-abort followed by a triple-fault.
1644	*/
1645	bool const fIsMsrCountValid = iemVmxIsAutoMsrCountValid(pVCpu, cMsrs);
1646	if (fIsMsrCountValid)
1647	{ /* likely */ }
1648	else
1649	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrStoreCount);
1650
1651	/*
1652	* Optimization if the nested hypervisor is using the same guest-physical page for both
1653	* the VM-entry MSR-load area as well as the VM-exit MSR store area.
1654	*/
1655	PVMXAUTOMSR pMsrArea;
1656	RTGCPHYS const GCPhysVmEntryMsrLoadArea = pVmcs->u64AddrEntryMsrLoad.u;
1657	RTGCPHYS const GCPhysVmExitMsrStoreArea = pVmcs->u64AddrExitMsrStore.u;
1658	if (GCPhysVmEntryMsrLoadArea == GCPhysVmExitMsrStoreArea)
1659	pMsrArea = pVCpu->cpum.GstCtx.hwvirt.vmx.aEntryMsrLoadArea;
1660	else
1661	{
1662	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrStoreArea[0],
1663	GCPhysVmExitMsrStoreArea, cMsrs * sizeof(VMXAUTOMSR));
1664	if (RT_SUCCESS(rc))
1665	pMsrArea = pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrStoreArea;
1666	else
1667	{
1668	AssertMsgFailed(("VM-exit: Failed to read MSR auto-store area at %#RGp, rc=%Rrc\n", GCPhysVmExitMsrStoreArea, rc));
1669	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrStorePtrReadPhys);
1670	}
1671	}
1672
1673	/*
1674	* Update VM-exit MSR store area.
1675	*/
1676	PVMXAUTOMSR pMsr = pMsrArea;
1677	for (uint32_t idxMsr = 0; idxMsr < cMsrs; idxMsr++, pMsr++)
1678	{
1679	if ( !pMsr->u32Reserved
1680	&& pMsr->u32Msr != MSR_IA32_SMBASE
1681	&& pMsr->u32Msr >> 8 != MSR_IA32_X2APIC_START >> 8)
1682	{
1683	VBOXSTRICTRC rcStrict = CPUMQueryGuestMsr(pVCpu, pMsr->u32Msr, &pMsr->u64Value);
1684	if (rcStrict == VINF_SUCCESS)
1685	continue;
1686
1687	/*
1688	* If we're in ring-0, we cannot handle returns to ring-3 at this point and continue VM-exit.
1689	* If any nested hypervisor loads MSRs that require ring-3 handling, we cause a VMX-abort
1690	* recording the MSR index in the auxiliary info. field and indicated further by our
1691	* own, specific diagnostic code. Later, we can try implement handling of the MSR in ring-0
1692	* if possible, or come up with a better, generic solution.
1693	*/
1694	pVCpu->cpum.GstCtx.hwvirt.vmx.uAbortAux = pMsr->u32Msr;
1695	VMXVDIAG const enmDiag = rcStrict == VINF_CPUM_R3_MSR_READ
1696	? kVmxVDiag_Vmexit_MsrStoreRing3
1697	: kVmxVDiag_Vmexit_MsrStore;
1698	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, enmDiag);
1699	}
1700	else
1701	{
1702	pVCpu->cpum.GstCtx.hwvirt.vmx.uAbortAux = pMsr->u32Msr;
1703	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrStoreRsvd);
1704	}
1705	}
1706
1707	/*
1708	* Commit the VM-exit MSR store are to guest memory.
1709	*/
1710	int rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVmExitMsrStoreArea, pMsrArea, cMsrs * sizeof(VMXAUTOMSR));
1711	if (RT_SUCCESS(rc))
1712	return VINF_SUCCESS;
1713
1714	NOREF(uExitReason);
1715	NOREF(pszFailure);
1716
1717	AssertMsgFailed(("VM-exit: Failed to write MSR auto-store area at %#RGp, rc=%Rrc\n", GCPhysVmExitMsrStoreArea, rc));
1718	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrStorePtrWritePhys);
1719	}
1720
1721
1722	/**
1723	* Performs a VMX abort (due to an fatal error during VM-exit).
1724	*
1725	* @returns Strict VBox status code.
1726	* @param pVCpu The cross context virtual CPU structure.
1727	* @param enmAbort The VMX abort reason.
1728	*/
1729	static VBOXSTRICTRC iemVmxAbort(PVMCPUCC pVCpu, VMXABORT enmAbort) RT_NOEXCEPT
1730	{
1731	/*
1732	* Perform the VMX abort.
1733	* See Intel spec. 27.7 "VMX Aborts".
1734	*/
1735	LogFunc(("enmAbort=%u (%s) -> RESET\n", enmAbort, VMXGetAbortDesc(enmAbort)));
1736
1737	/* We don't support SMX yet. */
1738	pVCpu->cpum.GstCtx.hwvirt.vmx.enmAbort = enmAbort;
1739	if (IEM_VMX_HAS_CURRENT_VMCS(pVCpu))
1740	{
1741	RTGCPHYS const GCPhysVmcs = IEM_VMX_GET_CURRENT_VMCS(pVCpu);
1742	uint32_t const offVmxAbort = RT_UOFFSETOF(VMXVVMCS, enmVmxAbort);
1743	PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVmcs + offVmxAbort, &enmAbort, sizeof(enmAbort));
1744	}
1745
1746	return VINF_EM_TRIPLE_FAULT;
1747	}
1748
1749
1750	/**
1751	* Loads host control registers, debug registers and MSRs as part of VM-exit.
1752	*
1753	* @param pVCpu The cross context virtual CPU structure.
1754	*/
1755	static void iemVmxVmexitLoadHostControlRegsMsrs(PVMCPUCC pVCpu) RT_NOEXCEPT
1756	{
1757	/*
1758	* Load host control registers, debug registers and MSRs.
1759	* See Intel spec. 27.5.1 "Loading Host Control Registers, Debug Registers, MSRs".
1760	*/
1761	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1762	bool const fHostInLongMode = RT_BOOL(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_HOST_ADDR_SPACE_SIZE);
1763
1764	/* CR0. */
1765	{
1766	/* Bits 63:32, 28:19, 17, 15:6, ET, CD, NW and CR0 fixed bits are not modified. */
1767	uint64_t const fCr0IgnMask = VMX_EXIT_HOST_CR0_IGNORE_MASK;
1768	uint64_t const uHostCr0 = pVmcs->u64HostCr0.u;
1769	uint64_t const uGuestCr0 = pVCpu->cpum.GstCtx.cr0;
1770	uint64_t const uValidHostCr0 = (uHostCr0 & ~fCr0IgnMask) \| (uGuestCr0 & fCr0IgnMask);
1771
1772	/* Verify we have not modified CR0 fixed bits in VMX operation. */
1773	#ifdef VBOX_STRICT
1774	uint64_t const uCr0Mb1 = iemVmxGetCr0Fixed0(pVCpu, true /* fVmxNonRootMode */);
1775	bool const fUx = RT_BOOL(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST);
1776	AssertMsg( (uValidHostCr0 & uCr0Mb1) == uCr0Mb1
1777	&& (uValidHostCr0 & ~VMX_V_CR0_FIXED1) == 0,
1778	("host=%#RX64 guest=%#RX64 mb1=%#RX64 valid_host_cr0=%#RX64 fUx=%RTbool\n",
1779	uHostCr0, uGuestCr0, uCr0Mb1, uValidHostCr0, fUx));
1780	#endif
1781	Assert(!(uValidHostCr0 >> 32));
1782	CPUMSetGuestCR0(pVCpu, uValidHostCr0);
1783	}
1784
1785	/* CR4. */
1786	{
1787	/* CR4 fixed bits are not modified. */
1788	uint64_t const uCr4Mb1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed0;
1789	uint64_t const uCr4Mb0 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed1;
1790	uint64_t const uHostCr4 = pVmcs->u64HostCr4.u;
1791	uint64_t uValidHostCr4 = (uHostCr4 & uCr4Mb0) \| uCr4Mb1;
1792	if (fHostInLongMode)
1793	uValidHostCr4 \|= X86_CR4_PAE;
1794	else
1795	uValidHostCr4 &= ~(uint64_t)X86_CR4_PCIDE;
1796
1797	/* Verify we have not modified CR4 fixed bits in VMX non-root operation. */
1798	AssertMsg( (uValidHostCr4 & uCr4Mb1) == uCr4Mb1
1799	&& (uValidHostCr4 & ~uCr4Mb0) == 0,
1800	("host=%#RX64 guest=%#RX64, uCr4Mb1=%#RX64 uCr4Mb0=%#RX64 valid_host_cr4=%#RX64\n",
1801	uHostCr4, pVCpu->cpum.GstCtx.cr4, uCr4Mb1, uCr4Mb0, uValidHostCr4));
1802	CPUMSetGuestCR4(pVCpu, uValidHostCr4);
1803	}
1804
1805	/* CR3 (host value validated while checking host-state during VM-entry). */
1806	pVCpu->cpum.GstCtx.cr3 = pVmcs->u64HostCr3.u;
1807
1808	/* DR7. */
1809	pVCpu->cpum.GstCtx.dr[7] = X86_DR7_INIT_VAL;
1810
1811	/** @todo NSTVMX: Support IA32_DEBUGCTL MSR */
1812
1813	/* Save SYSENTER CS, ESP, EIP (host value validated while checking host-state during VM-entry). */
1814	pVCpu->cpum.GstCtx.SysEnter.eip = pVmcs->u64HostSysenterEip.u;
1815	pVCpu->cpum.GstCtx.SysEnter.esp = pVmcs->u64HostSysenterEsp.u;
1816	pVCpu->cpum.GstCtx.SysEnter.cs = pVmcs->u32HostSysenterCs;
1817
1818	/* FS, GS bases are loaded later while we load host segment registers. */
1819
1820	/* EFER MSR (host value validated while checking host-state during VM-entry). */
1821	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_LOAD_EFER_MSR)
1822	pVCpu->cpum.GstCtx.msrEFER = pVmcs->u64HostEferMsr.u;
1823	else if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
1824	{
1825	if (fHostInLongMode)
1826	pVCpu->cpum.GstCtx.msrEFER \|= (MSR_K6_EFER_LMA \| MSR_K6_EFER_LME);
1827	else
1828	pVCpu->cpum.GstCtx.msrEFER &= ~(MSR_K6_EFER_LMA \| MSR_K6_EFER_LME);
1829	}
1830
1831	/* We don't support IA32_PERF_GLOBAL_CTRL MSR yet. */
1832
1833	/* PAT MSR (host value is validated while checking host-state during VM-entry). */
1834	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_LOAD_PAT_MSR)
1835	pVCpu->cpum.GstCtx.msrPAT = pVmcs->u64HostPatMsr.u;
1836
1837	/* We don't support IA32_BNDCFGS MSR yet. */
1838	}
1839
1840
1841	/**
1842	* Loads host segment registers, GDTR, IDTR, LDTR and TR as part of VM-exit.
1843	*
1844	* @param pVCpu The cross context virtual CPU structure.
1845	*/
1846	static void iemVmxVmexitLoadHostSegRegs(PVMCPUCC pVCpu) RT_NOEXCEPT
1847	{
1848	/*
1849	* Load host segment registers, GDTR, IDTR, LDTR and TR.
1850	* See Intel spec. 27.5.2 "Loading Host Segment and Descriptor-Table Registers".
1851	*
1852	* Warning! Be careful to not touch fields that are reserved by VT-x,
1853	* e.g. segment limit high bits stored in segment attributes (in bits 11:8).
1854	*/
1855	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1856	bool const fHostInLongMode = RT_BOOL(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_HOST_ADDR_SPACE_SIZE);
1857
1858	/* CS, SS, ES, DS, FS, GS. */
1859	for (unsigned iSegReg = 0; iSegReg < X86_SREG_COUNT; iSegReg++)
1860	{
1861	RTSEL const HostSel = iemVmxVmcsGetHostSelReg(pVmcs, iSegReg);
1862	bool const fUnusable = RT_BOOL(HostSel == 0);
1863	PCPUMSELREG pSelReg = &pVCpu->cpum.GstCtx.aSRegs[iSegReg];
1864
1865	/* Selector. */
1866	pSelReg->Sel = HostSel;
1867	pSelReg->ValidSel = HostSel;
1868	pSelReg->fFlags = CPUMSELREG_FLAGS_VALID;
1869
1870	/* Limit. */
1871	pSelReg->u32Limit = 0xffffffff;
1872
1873	/* Base. */
1874	pSelReg->u64Base = 0;
1875
1876	/* Attributes. */
1877	if (iSegReg == X86_SREG_CS)
1878	{
1879	pSelReg->Attr.n.u4Type = X86_SEL_TYPE_CODE \| X86_SEL_TYPE_READ \| X86_SEL_TYPE_ACCESSED;
1880	pSelReg->Attr.n.u1DescType = 1;
1881	pSelReg->Attr.n.u2Dpl = 0;
1882	pSelReg->Attr.n.u1Present = 1;
1883	pSelReg->Attr.n.u1Long = fHostInLongMode;
1884	pSelReg->Attr.n.u1DefBig = !fHostInLongMode;
1885	pSelReg->Attr.n.u1Granularity = 1;
1886	Assert(!pSelReg->Attr.n.u1Unusable);
1887	Assert(!fUnusable);
1888	}
1889	else
1890	{
1891	pSelReg->Attr.n.u4Type = X86_SEL_TYPE_RW \| X86_SEL_TYPE_ACCESSED;
1892	pSelReg->Attr.n.u1DescType = 1;
1893	pSelReg->Attr.n.u2Dpl = 0;
1894	pSelReg->Attr.n.u1Present = 1;
1895	pSelReg->Attr.n.u1DefBig = 1;
1896	pSelReg->Attr.n.u1Granularity = 1;
1897	pSelReg->Attr.n.u1Unusable = fUnusable;
1898	}
1899	}
1900
1901	/* FS base. */
1902	if ( !pVCpu->cpum.GstCtx.fs.Attr.n.u1Unusable
1903	\|\| fHostInLongMode)
1904	{
1905	Assert(X86_IS_CANONICAL(pVmcs->u64HostFsBase.u));
1906	pVCpu->cpum.GstCtx.fs.u64Base = pVmcs->u64HostFsBase.u;
1907	}
1908
1909	/* GS base. */
1910	if ( !pVCpu->cpum.GstCtx.gs.Attr.n.u1Unusable
1911	\|\| fHostInLongMode)
1912	{
1913	Assert(X86_IS_CANONICAL(pVmcs->u64HostGsBase.u));
1914	pVCpu->cpum.GstCtx.gs.u64Base = pVmcs->u64HostGsBase.u;
1915	}
1916
1917	/* TR. */
1918	Assert(X86_IS_CANONICAL(pVmcs->u64HostTrBase.u));
1919	Assert(!pVCpu->cpum.GstCtx.tr.Attr.n.u1Unusable);
1920	pVCpu->cpum.GstCtx.tr.Sel = pVmcs->HostTr;
1921	pVCpu->cpum.GstCtx.tr.ValidSel = pVmcs->HostTr;
1922	pVCpu->cpum.GstCtx.tr.fFlags = CPUMSELREG_FLAGS_VALID;
1923	pVCpu->cpum.GstCtx.tr.u32Limit = X86_SEL_TYPE_SYS_386_TSS_LIMIT_MIN;
1924	pVCpu->cpum.GstCtx.tr.u64Base = pVmcs->u64HostTrBase.u;
1925	pVCpu->cpum.GstCtx.tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
1926	pVCpu->cpum.GstCtx.tr.Attr.n.u1DescType = 0;
1927	pVCpu->cpum.GstCtx.tr.Attr.n.u2Dpl = 0;
1928	pVCpu->cpum.GstCtx.tr.Attr.n.u1Present = 1;
1929	pVCpu->cpum.GstCtx.tr.Attr.n.u1DefBig = 0;
1930	pVCpu->cpum.GstCtx.tr.Attr.n.u1Granularity = 0;
1931
1932	/* LDTR (Warning! do not touch the base and limits here). */
1933	pVCpu->cpum.GstCtx.ldtr.Sel = 0;
1934	pVCpu->cpum.GstCtx.ldtr.ValidSel = 0;
1935	pVCpu->cpum.GstCtx.ldtr.fFlags = CPUMSELREG_FLAGS_VALID;
1936	pVCpu->cpum.GstCtx.ldtr.Attr.u = X86DESCATTR_UNUSABLE;
1937
1938	/* GDTR. */
1939	Assert(X86_IS_CANONICAL(pVmcs->u64HostGdtrBase.u));
1940	pVCpu->cpum.GstCtx.gdtr.pGdt = pVmcs->u64HostGdtrBase.u;
1941	pVCpu->cpum.GstCtx.gdtr.cbGdt = 0xffff;
1942
1943	/* IDTR.*/
1944	Assert(X86_IS_CANONICAL(pVmcs->u64HostIdtrBase.u));
1945	pVCpu->cpum.GstCtx.idtr.pIdt = pVmcs->u64HostIdtrBase.u;
1946	pVCpu->cpum.GstCtx.idtr.cbIdt = 0xffff;
1947	}
1948
1949
1950	/**
1951	* Loads the host MSRs from the VM-exit MSR-load area as part of VM-exit.
1952	*
1953	* @returns VBox status code.
1954	* @param pVCpu The cross context virtual CPU structure.
1955	* @param uExitReason The VMX instruction name (for logging purposes).
1956	*/
1957	static int iemVmxVmexitLoadHostAutoMsrs(PVMCPUCC pVCpu, uint32_t uExitReason) RT_NOEXCEPT
1958	{
1959	/*
1960	* Load host MSRs.
1961	* See Intel spec. 27.6 "Loading MSRs".
1962	*/
1963	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
1964	const char * const pszFailure = "VMX-abort";
1965
1966	/*
1967	* The VM-exit MSR-load area address need not be a valid guest-physical address if the
1968	* VM-exit MSR load count is 0. If this is the case, bail early without reading it.
1969	* See Intel spec. 24.7.2 "VM-Exit Controls for MSRs".
1970	*/
1971	uint32_t const cMsrs = RT_MIN(pVmcs->u32ExitMsrLoadCount, RT_ELEMENTS(pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrLoadArea));
1972	if (!cMsrs)
1973	return VINF_SUCCESS;
1974
1975	/*
1976	* Verify the MSR auto-load count. Physical CPUs can behave unpredictably if the count
1977	* is exceeded including possibly raising #MC exceptions during VMX transition. Our
1978	* implementation causes a VMX-abort followed by a triple-fault.
1979	*/
1980	bool const fIsMsrCountValid = iemVmxIsAutoMsrCountValid(pVCpu, cMsrs);
1981	if (fIsMsrCountValid)
1982	{ /* likely */ }
1983	else
1984	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrLoadCount);
1985
1986	RTGCPHYS const GCPhysVmExitMsrLoadArea = pVmcs->u64AddrExitMsrLoad.u;
1987	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrLoadArea[0],
1988	GCPhysVmExitMsrLoadArea, cMsrs * sizeof(VMXAUTOMSR));
1989	if (RT_SUCCESS(rc))
1990	{
1991	PCVMXAUTOMSR pMsr = pVCpu->cpum.GstCtx.hwvirt.vmx.aExitMsrLoadArea;
1992	for (uint32_t idxMsr = 0; idxMsr < cMsrs; idxMsr++, pMsr++)
1993	{
1994	if ( !pMsr->u32Reserved
1995	&& pMsr->u32Msr != MSR_K8_FS_BASE
1996	&& pMsr->u32Msr != MSR_K8_GS_BASE
1997	&& pMsr->u32Msr != MSR_K6_EFER
1998	&& pMsr->u32Msr != MSR_IA32_SMM_MONITOR_CTL
1999	&& pMsr->u32Msr >> 8 != MSR_IA32_X2APIC_START >> 8)
2000	{
2001	VBOXSTRICTRC rcStrict = CPUMSetGuestMsr(pVCpu, pMsr->u32Msr, pMsr->u64Value);
2002	if (rcStrict == VINF_SUCCESS)
2003	continue;
2004
2005	/*
2006	* If we're in ring-0, we cannot handle returns to ring-3 at this point and continue VM-exit.
2007	* If any nested hypervisor loads MSRs that require ring-3 handling, we cause a VMX-abort
2008	* recording the MSR index in the auxiliary info. field and indicated further by our
2009	* own, specific diagnostic code. Later, we can try implement handling of the MSR in ring-0
2010	* if possible, or come up with a better, generic solution.
2011	*/
2012	pVCpu->cpum.GstCtx.hwvirt.vmx.uAbortAux = pMsr->u32Msr;
2013	VMXVDIAG const enmDiag = rcStrict == VINF_CPUM_R3_MSR_WRITE
2014	? kVmxVDiag_Vmexit_MsrLoadRing3
2015	: kVmxVDiag_Vmexit_MsrLoad;
2016	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, enmDiag);
2017	}
2018	else
2019	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrLoadRsvd);
2020	}
2021	}
2022	else
2023	{
2024	AssertMsgFailed(("VM-exit: Failed to read MSR auto-load area at %#RGp, rc=%Rrc\n", GCPhysVmExitMsrLoadArea, rc));
2025	IEM_VMX_VMEXIT_FAILED_RET(pVCpu, uExitReason, pszFailure, kVmxVDiag_Vmexit_MsrLoadPtrReadPhys);
2026	}
2027
2028	NOREF(uExitReason);
2029	NOREF(pszFailure);
2030	return VINF_SUCCESS;
2031	}
2032
2033
2034	/**
2035	* Loads the host state as part of VM-exit.
2036	*
2037	* @returns Strict VBox status code.
2038	* @param pVCpu The cross context virtual CPU structure.
2039	* @param uExitReason The VM-exit reason (for logging purposes).
2040	*/
2041	static VBOXSTRICTRC iemVmxVmexitLoadHostState(PVMCPUCC pVCpu, uint32_t uExitReason) RT_NOEXCEPT
2042	{
2043	/*
2044	* Load host state.
2045	* See Intel spec. 27.5 "Loading Host State".
2046	*/
2047	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
2048	bool const fHostInLongMode = RT_BOOL(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_HOST_ADDR_SPACE_SIZE);
2049
2050	/* We cannot return from a long-mode guest to a host that is not in long mode. */
2051	if ( CPUMIsGuestInLongMode(pVCpu)
2052	&& !fHostInLongMode)
2053	{
2054	Log(("VM-exit from long-mode guest to host not in long-mode -> VMX-Abort\n"));
2055	return iemVmxAbort(pVCpu, VMXABORT_HOST_NOT_IN_LONG_MODE);
2056	}
2057
2058	/*
2059	* Check host PAE PDPTEs prior to loading the host state.
2060	* See Intel spec. 26.5.4 "Checking and Loading Host Page-Directory-Pointer-Table Entries".
2061	*/
2062	if ( (pVmcs->u64HostCr4.u & X86_CR4_PAE)
2063	&& !fHostInLongMode
2064	&& ( !CPUMIsGuestInPAEModeEx(&pVCpu->cpum.GstCtx)
2065	\|\| pVmcs->u64HostCr3.u != pVCpu->cpum.GstCtx.cr3))
2066	{
2067	int const rc = PGMGstMapPaePdpesAtCr3(pVCpu, pVmcs->u64HostCr3.u);
2068	if (RT_SUCCESS(rc))
2069	{ /* likely*/ }
2070	else
2071	{
2072	IEM_VMX_VMEXIT_FAILED(pVCpu, uExitReason, "VMX-abort", kVmxVDiag_Vmexit_HostPdpte);
2073	return iemVmxAbort(pVCpu, VMXBOART_HOST_PDPTE);
2074	}
2075	}
2076
2077	iemVmxVmexitLoadHostControlRegsMsrs(pVCpu);
2078	iemVmxVmexitLoadHostSegRegs(pVCpu);
2079
2080	/*
2081	* Load host RIP, RSP and RFLAGS.
2082	* See Intel spec. 27.5.3 "Loading Host RIP, RSP and RFLAGS"
2083	*/
2084	pVCpu->cpum.GstCtx.rip = pVmcs->u64HostRip.u;
2085	pVCpu->cpum.GstCtx.rsp = pVmcs->u64HostRsp.u;
2086	pVCpu->cpum.GstCtx.rflags.u = X86_EFL_1;
2087
2088	/* Clear address range monitoring. */
2089	EMMonitorWaitClear(pVCpu);
2090
2091	/* Perform the VMX transition (PGM updates). */
2092	VBOXSTRICTRC rcStrict = iemVmxTransition(pVCpu, 0 /cbInstr - whatever/);
2093	if (rcStrict == VINF_SUCCESS)
2094	{ /* likely */ }
2095	else if (RT_SUCCESS(rcStrict))
2096	{
2097	Log3(("VM-exit: iemVmxTransition returns %Rrc (uExitReason=%u) -> Setting passup status\n", VBOXSTRICTRC_VAL(rcStrict),
2098	uExitReason));
2099	rcStrict = iemSetPassUpStatus(pVCpu, rcStrict);
2100	}
2101	else
2102	{
2103	Log3(("VM-exit: iemVmxTransition failed! rc=%Rrc (uExitReason=%u)\n", VBOXSTRICTRC_VAL(rcStrict), uExitReason));
2104	return VBOXSTRICTRC_VAL(rcStrict);
2105	}
2106
2107	Assert(rcStrict == VINF_SUCCESS);
2108
2109	/* Load MSRs from the VM-exit auto-load MSR area. */
2110	int rc = iemVmxVmexitLoadHostAutoMsrs(pVCpu, uExitReason);
2111	if (RT_FAILURE(rc))
2112	{
2113	Log(("VM-exit failed while loading host MSRs -> VMX-Abort\n"));
2114	return iemVmxAbort(pVCpu, VMXABORT_LOAD_HOST_MSR);
2115	}
2116	return VINF_SUCCESS;
2117	}
2118
2119
2120	/**
2121	* Gets VM-exit instruction information along with any displacement for an
2122	* instruction VM-exit.
2123	*
2124	* @returns The VM-exit instruction information.
2125	* @param pVCpu The cross context virtual CPU structure.
2126	* @param uExitReason The VM-exit reason.
2127	* @param uInstrId The VM-exit instruction identity (VMXINSTRID_XXX).
2128	* @param pGCPtrDisp Where to store the displacement field. Optional, can be
2129	* NULL.
2130	*/
2131	static uint32_t iemVmxGetExitInstrInfo(PVMCPUCC pVCpu, uint32_t uExitReason, VMXINSTRID uInstrId, PRTGCPTR pGCPtrDisp) RT_NOEXCEPT
2132	{
2133	RTGCPTR GCPtrDisp;
2134	VMXEXITINSTRINFO ExitInstrInfo;
2135	ExitInstrInfo.u = 0;
2136
2137	/*
2138	* Get and parse the ModR/M byte from our decoded opcodes.
2139	*/
2140	uint8_t bRm;
2141	uint8_t const offModRm = pVCpu->iem.s.offModRm;
2142	IEM_MODRM_GET_U8(pVCpu, bRm, offModRm);
2143	if ((bRm & X86_MODRM_MOD_MASK) == (3 << X86_MODRM_MOD_SHIFT))
2144	{
2145	/*
2146	* ModR/M indicates register addressing.
2147	*
2148	* The primary/secondary register operands are reported in the iReg1 or iReg2
2149	* fields depending on whether it is a read/write form.
2150	*/
2151	uint8_t idxReg1;
2152	uint8_t idxReg2;
2153	if (!VMXINSTRID_IS_MODRM_PRIMARY_OP_W(uInstrId))
2154	{
2155	idxReg1 = ((bRm >> X86_MODRM_REG_SHIFT) & X86_MODRM_REG_SMASK) \| pVCpu->iem.s.uRexReg;
2156	idxReg2 = (bRm & X86_MODRM_RM_MASK) \| pVCpu->iem.s.uRexB;
2157	}
2158	else
2159	{
2160	idxReg1 = (bRm & X86_MODRM_RM_MASK) \| pVCpu->iem.s.uRexB;
2161	idxReg2 = ((bRm >> X86_MODRM_REG_SHIFT) & X86_MODRM_REG_SMASK) \| pVCpu->iem.s.uRexReg;
2162	}
2163	ExitInstrInfo.All.u2Scaling = 0;
2164	ExitInstrInfo.All.iReg1 = idxReg1;
2165	ExitInstrInfo.All.u3AddrSize = pVCpu->iem.s.enmEffAddrMode;
2166	ExitInstrInfo.All.fIsRegOperand = 1;
2167	ExitInstrInfo.All.uOperandSize = pVCpu->iem.s.enmEffOpSize;
2168	ExitInstrInfo.All.iSegReg = 0;
2169	ExitInstrInfo.All.iIdxReg = 0;
2170	ExitInstrInfo.All.fIdxRegInvalid = 1;
2171	ExitInstrInfo.All.iBaseReg = 0;
2172	ExitInstrInfo.All.fBaseRegInvalid = 1;
2173	ExitInstrInfo.All.iReg2 = idxReg2;
2174
2175	/* Displacement not applicable for register addressing. */
2176	GCPtrDisp = 0;
2177	}
2178	else
2179	{
2180	/*
2181	* ModR/M indicates memory addressing.
2182	*/
2183	uint8_t uScale = 0;
2184	bool fBaseRegValid = false;
2185	bool fIdxRegValid = false;
2186	uint8_t iBaseReg = 0;
2187	uint8_t iIdxReg = 0;
2188	if (pVCpu->iem.s.enmEffAddrMode == IEMMODE_16BIT)
2189	{
2190	/*
2191	* Parse the ModR/M, displacement for 16-bit addressing mode.
2192	* See Intel instruction spec. Table 2-1. "16-Bit Addressing Forms with the ModR/M Byte".
2193	*/
2194	uint16_t u16Disp = 0;
2195	uint8_t const offDisp = offModRm + sizeof(bRm);
2196	if ((bRm & (X86_MODRM_MOD_MASK \| X86_MODRM_RM_MASK)) == 6)
2197	{
2198	/* Displacement without any registers. */
2199	IEM_DISP_GET_U16(pVCpu, u16Disp, offDisp);
2200	}
2201	else
2202	{
2203	/* Register (index and base). */
2204	switch (bRm & X86_MODRM_RM_MASK)
2205	{
2206	case 0: fBaseRegValid = true; iBaseReg = X86_GREG_xBX; fIdxRegValid = true; iIdxReg = X86_GREG_xSI; break;
2207	case 1: fBaseRegValid = true; iBaseReg = X86_GREG_xBX; fIdxRegValid = true; iIdxReg = X86_GREG_xDI; break;
2208	case 2: fBaseRegValid = true; iBaseReg = X86_GREG_xBP; fIdxRegValid = true; iIdxReg = X86_GREG_xSI; break;
2209	case 3: fBaseRegValid = true; iBaseReg = X86_GREG_xBP; fIdxRegValid = true; iIdxReg = X86_GREG_xDI; break;
2210	case 4: fIdxRegValid = true; iIdxReg = X86_GREG_xSI; break;
2211	case 5: fIdxRegValid = true; iIdxReg = X86_GREG_xDI; break;
2212	case 6: fBaseRegValid = true; iBaseReg = X86_GREG_xBP; break;
2213	case 7: fBaseRegValid = true; iBaseReg = X86_GREG_xBX; break;
2214	}
2215
2216	/* Register + displacement. */
2217	switch ((bRm >> X86_MODRM_MOD_SHIFT) & X86_MODRM_MOD_SMASK)
2218	{
2219	case 0: break;
2220	case 1: IEM_DISP_GET_S8_SX_U16(pVCpu, u16Disp, offDisp); break;
2221	case 2: IEM_DISP_GET_U16(pVCpu, u16Disp, offDisp); break;
2222	default:
2223	{
2224	/* Register addressing, handled at the beginning. */
2225	AssertMsgFailed(("ModR/M %#x implies register addressing, memory addressing expected!", bRm));
2226	break;
2227	}
2228	}
2229	}
2230
2231	Assert(!uScale); /* There's no scaling/SIB byte for 16-bit addressing. */
2232	GCPtrDisp = (int16_t)u16Disp; /* Sign-extend the displacement. */
2233	}
2234	else if (pVCpu->iem.s.enmEffAddrMode == IEMMODE_32BIT)
2235	{
2236	/*
2237	* Parse the ModR/M, SIB, displacement for 32-bit addressing mode.
2238	* See Intel instruction spec. Table 2-2. "32-Bit Addressing Forms with the ModR/M Byte".
2239	*/
2240	uint32_t u32Disp = 0;
2241	if ((bRm & (X86_MODRM_MOD_MASK \| X86_MODRM_RM_MASK)) == 5)
2242	{
2243	/* Displacement without any registers. */
2244	uint8_t const offDisp = offModRm + sizeof(bRm);
2245	IEM_DISP_GET_U32(pVCpu, u32Disp, offDisp);
2246	}
2247	else
2248	{
2249	/* Register (and perhaps scale, index and base). */
2250	uint8_t offDisp = offModRm + sizeof(bRm);
2251	iBaseReg = (bRm & X86_MODRM_RM_MASK);
2252	if (iBaseReg == 4)
2253	{
2254	/* An SIB byte follows the ModR/M byte, parse it. */
2255	uint8_t bSib;
2256	uint8_t const offSib = offModRm + sizeof(bRm);
2257	IEM_SIB_GET_U8(pVCpu, bSib, offSib);
2258
2259	/* A displacement may follow SIB, update its offset. */
2260	offDisp += sizeof(bSib);
2261
2262	/* Get the scale. */
2263	uScale = (bSib >> X86_SIB_SCALE_SHIFT) & X86_SIB_SCALE_SMASK;
2264
2265	/* Get the index register. */
2266	iIdxReg = (bSib >> X86_SIB_INDEX_SHIFT) & X86_SIB_INDEX_SMASK;
2267	fIdxRegValid = RT_BOOL(iIdxReg != 4);
2268
2269	/* Get the base register. */
2270	iBaseReg = bSib & X86_SIB_BASE_MASK;
2271	fBaseRegValid = true;
2272	if (iBaseReg == 5)
2273	{
2274	if ((bRm & X86_MODRM_MOD_MASK) == 0)
2275	{
2276	/* Mod is 0 implies a 32-bit displacement with no base. */
2277	fBaseRegValid = false;
2278	IEM_DISP_GET_U32(pVCpu, u32Disp, offDisp);
2279	}
2280	else
2281	{
2282	/* Mod is not 0 implies an 8-bit/32-bit displacement (handled below) with an EBP base. */
2283	iBaseReg = X86_GREG_xBP;
2284	}
2285	}
2286	}
2287
2288	/* Register + displacement. */
2289	switch ((bRm >> X86_MODRM_MOD_SHIFT) & X86_MODRM_MOD_SMASK)
2290	{
2291	case 0: /* Handled above */ break;
2292	case 1: IEM_DISP_GET_S8_SX_U32(pVCpu, u32Disp, offDisp); break;
2293	case 2: IEM_DISP_GET_U32(pVCpu, u32Disp, offDisp); break;
2294	default:
2295	{
2296	/* Register addressing, handled at the beginning. */
2297	AssertMsgFailed(("ModR/M %#x implies register addressing, memory addressing expected!", bRm));
2298	break;
2299	}
2300	}
2301	}
2302
2303	GCPtrDisp = (int32_t)u32Disp; /* Sign-extend the displacement. */
2304	}
2305	else
2306	{
2307	Assert(pVCpu->iem.s.enmEffAddrMode == IEMMODE_64BIT);
2308
2309	/*
2310	* Parse the ModR/M, SIB, displacement for 64-bit addressing mode.
2311	* See Intel instruction spec. 2.2 "IA-32e Mode".
2312	*/
2313	uint64_t u64Disp = 0;
2314	bool const fRipRelativeAddr = RT_BOOL((bRm & (X86_MODRM_MOD_MASK \| X86_MODRM_RM_MASK)) == 5);
2315	if (fRipRelativeAddr)
2316	{
2317	/*
2318	* RIP-relative addressing mode.
2319	*
2320	* The displacement is 32-bit signed implying an offset range of +/-2G.
2321	* See Intel instruction spec. 2.2.1.6 "RIP-Relative Addressing".
2322	*/
2323	uint8_t const offDisp = offModRm + sizeof(bRm);
2324	IEM_DISP_GET_S32_SX_U64(pVCpu, u64Disp, offDisp);
2325	}
2326	else
2327	{
2328	uint8_t offDisp = offModRm + sizeof(bRm);
2329
2330	/*
2331	* Register (and perhaps scale, index and base).
2332	*
2333	* REX.B extends the most-significant bit of the base register. However, REX.B
2334	* is ignored while determining whether an SIB follows the opcode. Hence, we
2335	* shall OR any REX.B bit -after- inspecting for an SIB byte below.
2336	*
2337	* See Intel instruction spec. Table 2-5. "Special Cases of REX Encodings".
2338	*/
2339	iBaseReg = (bRm & X86_MODRM_RM_MASK);
2340	if (iBaseReg == 4)
2341	{
2342	/* An SIB byte follows the ModR/M byte, parse it. Displacement (if any) follows SIB. */
2343	uint8_t bSib;
2344	uint8_t const offSib = offModRm + sizeof(bRm);
2345	IEM_SIB_GET_U8(pVCpu, bSib, offSib);
2346
2347	/* Displacement may follow SIB, update its offset. */
2348	offDisp += sizeof(bSib);
2349
2350	/* Get the scale. */
2351	uScale = (bSib >> X86_SIB_SCALE_SHIFT) & X86_SIB_SCALE_SMASK;
2352
2353	/* Get the index. */
2354	iIdxReg = ((bSib >> X86_SIB_INDEX_SHIFT) & X86_SIB_INDEX_SMASK) \| pVCpu->iem.s.uRexIndex;
2355	fIdxRegValid = RT_BOOL(iIdxReg != 4); /* R12 -can- be used as an index register. */
2356
2357	/* Get the base. */
2358	iBaseReg = (bSib & X86_SIB_BASE_MASK);
2359	fBaseRegValid = true;
2360	if (iBaseReg == 5)
2361	{
2362	if ((bRm & X86_MODRM_MOD_MASK) == 0)
2363	{
2364	/* Mod is 0 implies a signed 32-bit displacement with no base. */
2365	IEM_DISP_GET_S32_SX_U64(pVCpu, u64Disp, offDisp);
2366	}
2367	else
2368	{
2369	/* Mod is non-zero implies an 8-bit/32-bit displacement (handled below) with RBP or R13 as base. */
2370	iBaseReg = pVCpu->iem.s.uRexB ? X86_GREG_x13 : X86_GREG_xBP;
2371	}
2372	}
2373	}
2374	iBaseReg \|= pVCpu->iem.s.uRexB;
2375
2376	/* Register + displacement. */
2377	switch ((bRm >> X86_MODRM_MOD_SHIFT) & X86_MODRM_MOD_SMASK)
2378	{
2379	case 0: /* Handled above */ break;
2380	case 1: IEM_DISP_GET_S8_SX_U64(pVCpu, u64Disp, offDisp); break;
2381	case 2: IEM_DISP_GET_S32_SX_U64(pVCpu, u64Disp, offDisp); break;
2382	default:
2383	{
2384	/* Register addressing, handled at the beginning. */
2385	AssertMsgFailed(("ModR/M %#x implies register addressing, memory addressing expected!", bRm));
2386	break;
2387	}
2388	}
2389	}
2390
2391	GCPtrDisp = fRipRelativeAddr ? pVCpu->cpum.GstCtx.rip + u64Disp : u64Disp;
2392	}
2393
2394	/*
2395	* The primary or secondary register operand is reported in iReg2 depending
2396	* on whether the primary operand is in read/write form.
2397	*/
2398	uint8_t idxReg2;
2399	if (!VMXINSTRID_IS_MODRM_PRIMARY_OP_W(uInstrId))
2400	{
2401	idxReg2 = bRm & X86_MODRM_RM_MASK;
2402	if (pVCpu->iem.s.enmEffAddrMode == IEMMODE_64BIT)
2403	idxReg2 \|= pVCpu->iem.s.uRexB;
2404	}
2405	else
2406	{
2407	idxReg2 = (bRm >> X86_MODRM_REG_SHIFT) & X86_MODRM_REG_SMASK;
2408	if (pVCpu->iem.s.enmEffAddrMode == IEMMODE_64BIT)
2409	idxReg2 \|= pVCpu->iem.s.uRexReg;
2410	}
2411	ExitInstrInfo.All.u2Scaling = uScale;
2412	ExitInstrInfo.All.iReg1 = 0; /* Not applicable for memory addressing. */
2413	ExitInstrInfo.All.u3AddrSize = pVCpu->iem.s.enmEffAddrMode;
2414	ExitInstrInfo.All.fIsRegOperand = 0;
2415	ExitInstrInfo.All.uOperandSize = pVCpu->iem.s.enmEffOpSize;
2416	ExitInstrInfo.All.iSegReg = pVCpu->iem.s.iEffSeg;
2417	ExitInstrInfo.All.iIdxReg = iIdxReg;
2418	ExitInstrInfo.All.fIdxRegInvalid = !fIdxRegValid;
2419	ExitInstrInfo.All.iBaseReg = iBaseReg;
2420	ExitInstrInfo.All.iIdxReg = !fBaseRegValid;
2421	ExitInstrInfo.All.iReg2 = idxReg2;
2422	}
2423
2424	/*
2425	* Handle exceptions to the norm for certain instructions.
2426	* (e.g. some instructions convey an instruction identity in place of iReg2).
2427	*/
2428	switch (uExitReason)
2429	{
2430	case VMX_EXIT_GDTR_IDTR_ACCESS:
2431	{
2432	Assert(VMXINSTRID_IS_VALID(uInstrId));
2433	Assert(VMXINSTRID_GET_ID(uInstrId) == (uInstrId & 0x3));
2434	ExitInstrInfo.GdtIdt.u2InstrId = VMXINSTRID_GET_ID(uInstrId);
2435	ExitInstrInfo.GdtIdt.u2Undef0 = 0;
2436	break;
2437	}
2438
2439	case VMX_EXIT_LDTR_TR_ACCESS:
2440	{
2441	Assert(VMXINSTRID_IS_VALID(uInstrId));
2442	Assert(VMXINSTRID_GET_ID(uInstrId) == (uInstrId & 0x3));
2443	ExitInstrInfo.LdtTr.u2InstrId = VMXINSTRID_GET_ID(uInstrId);
2444	ExitInstrInfo.LdtTr.u2Undef0 = 0;
2445	break;
2446	}
2447
2448	case VMX_EXIT_RDRAND:
2449	case VMX_EXIT_RDSEED:
2450	{
2451	Assert(ExitInstrInfo.RdrandRdseed.u2OperandSize != 3);
2452	break;
2453	}
2454	}
2455
2456	/* Update displacement and return the constructed VM-exit instruction information field. */
2457	if (pGCPtrDisp)
2458	*pGCPtrDisp = GCPtrDisp;
2459
2460	return ExitInstrInfo.u;
2461	}
2462
2463
2464	/**
2465	* VMX VM-exit handler.
2466	*
2467	* @returns Strict VBox status code.
2468	* @retval VINF_VMX_VMEXIT when the VM-exit is successful.
2469	* @retval VINF_EM_TRIPLE_FAULT when VM-exit is unsuccessful and leads to a
2470	* triple-fault.
2471	*
2472	* @param pVCpu The cross context virtual CPU structure.
2473	* @param uExitReason The VM-exit reason.
2474	* @param u64ExitQual The Exit qualification.
2475	*
2476	* @remarks We need not necessarily have completed VM-entry before a VM-exit is
2477	* called. Failures during VM-entry can cause VM-exits as well, so we
2478	* -cannot- assert we're in VMX non-root mode here.
2479	*/
2480	VBOXSTRICTRC iemVmxVmexit(PVMCPUCC pVCpu, uint32_t uExitReason, uint64_t u64ExitQual) RT_NOEXCEPT
2481	{
2482	# if defined(VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM) && !defined(IN_RING3)
2483	RT_NOREF3(pVCpu, uExitReason, u64ExitQual);
2484	AssertMsgFailed(("VM-exit should only be invoked from ring-3 when nested-guest executes only in ring-3!\n"));
2485	return VERR_IEM_IPE_7;
2486	# else
2487	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
2488
2489	/* Just count this as an exit and be done with that. */
2490	pVCpu->iem.s.cPotentialExits++;
2491
2492	/*
2493	* Import all the guest-CPU state.
2494	*
2495	* HM on returning to guest execution would have to reset up a whole lot of state
2496	* anyway, (e.g., VM-entry/VM-exit controls) and we do not ever import a part of
2497	* the state and flag reloading the entire state on re-entry. So import the entire
2498	* state here, see HMNotifyVmxNstGstVmexit() for more comments.
2499	*/
2500	IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_ALL);
2501
2502	/*
2503	* Ensure VM-entry interruption information valid bit is cleared.
2504	*
2505	* We do it here on every VM-exit so that even premature VM-exits (e.g. those caused
2506	* by invalid-guest state or machine-check exceptions) also clear this bit.
2507	*
2508	* See Intel spec. 27.2 "Recording VM-exit Information And Updating VM-entry control fields".
2509	*/
2510	if (VMX_ENTRY_INT_INFO_IS_VALID(pVmcs->u32EntryIntInfo))
2511	pVmcs->u32EntryIntInfo &= ~VMX_ENTRY_INT_INFO_VALID;
2512
2513	/*
2514	* Update the VM-exit reason and Exit qualification.
2515	* Other VMCS read-only data fields are expected to be updated by the caller already.
2516	*/
2517	pVmcs->u32RoExitReason = uExitReason;
2518	pVmcs->u64RoExitQual.u = u64ExitQual;
2519
2520	Log2(("vmexit: reason=%u qual=%#RX64 cs:rip=%04x:%08RX64 cr0=%#RX64 cr3=%#RX64 cr4=%#RX64 eflags=%#RX32\n", uExitReason,
2521	pVmcs->u64RoExitQual.u, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.cr0,
2522	pVCpu->cpum.GstCtx.cr3, pVCpu->cpum.GstCtx.cr4, pVCpu->cpum.GstCtx.eflags.u));
2523
2524	/*
2525	* Update the IDT-vectoring information fields if the VM-exit is triggered during delivery of an event.
2526	* See Intel spec. 27.2.4 "Information for VM Exits During Event Delivery".
2527	*/
2528	{
2529	uint8_t uVector;
2530	uint32_t fFlags;
2531	uint32_t uErrCode;
2532	bool const fInEventDelivery = IEMGetCurrentXcpt(pVCpu, &uVector, &fFlags, &uErrCode, NULL /* puCr2 */);
2533	if (fInEventDelivery)
2534	{
2535	/*
2536	* A VM-exit is not considered to occur during event delivery when the VM-exit is
2537	* caused by a triple-fault or the original event results in a double-fault that
2538	* causes the VM exit directly (exception bitmap). Therefore, we must not set the
2539	* original event information into the IDT-vectoring information fields.
2540	*
2541	* See Intel spec. 27.2.4 "Information for VM Exits During Event Delivery".
2542	*/
2543	if ( uExitReason != VMX_EXIT_TRIPLE_FAULT
2544	&& ( uExitReason != VMX_EXIT_XCPT_OR_NMI
2545	\|\| !VMX_EXIT_INT_INFO_IS_XCPT_DF(pVmcs->u32RoExitIntInfo)))
2546	{
2547	uint8_t const uIdtVectoringType = iemVmxGetEventType(uVector, fFlags);
2548	uint8_t const fErrCodeValid = RT_BOOL(fFlags & IEM_XCPT_FLAGS_ERR);
2549	uint32_t const uIdtVectoringInfo = RT_BF_MAKE(VMX_BF_IDT_VECTORING_INFO_VECTOR, uVector)
2550	\| RT_BF_MAKE(VMX_BF_IDT_VECTORING_INFO_TYPE, uIdtVectoringType)
2551	\| RT_BF_MAKE(VMX_BF_IDT_VECTORING_INFO_ERR_CODE_VALID, fErrCodeValid)
2552	\| RT_BF_MAKE(VMX_BF_IDT_VECTORING_INFO_VALID, 1);
2553	iemVmxVmcsSetIdtVectoringInfo(pVCpu, uIdtVectoringInfo);
2554	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, uErrCode);
2555	Log2(("vmexit: idt_info=%#RX32 idt_err_code=%#RX32 cr2=%#RX64\n", uIdtVectoringInfo, uErrCode,
2556	pVCpu->cpum.GstCtx.cr2));
2557	}
2558	}
2559	}
2560
2561	/* The following VMCS fields should always be zero since we don't support injecting SMIs into a guest. */
2562	Assert(pVmcs->u64RoIoRcx.u == 0);
2563	Assert(pVmcs->u64RoIoRsi.u == 0);
2564	Assert(pVmcs->u64RoIoRdi.u == 0);
2565	Assert(pVmcs->u64RoIoRip.u == 0);
2566
2567	/*
2568	* Save the guest state back into the VMCS.
2569	* We only need to save the state when the VM-entry was successful.
2570	*/
2571	bool const fVmentryFailed = VMX_EXIT_REASON_HAS_ENTRY_FAILED(uExitReason);
2572	if (!fVmentryFailed)
2573	{
2574	/* We should not cause an NMI-window/interrupt-window VM-exit when injecting events as part of VM-entry. */
2575	if (!CPUMIsGuestVmxInterceptEvents(&pVCpu->cpum.GstCtx))
2576	{
2577	Assert(uExitReason != VMX_EXIT_NMI_WINDOW);
2578	Assert(uExitReason != VMX_EXIT_INT_WINDOW);
2579	}
2580
2581	/* For exception or NMI VM-exits, the VM-exit interruption info. field must be valid. */
2582	Assert(uExitReason != VMX_EXIT_XCPT_OR_NMI \|\| VMX_EXIT_INT_INFO_IS_VALID(pVmcs->u32RoExitIntInfo));
2583
2584	/* For external interrupts that occur while "acknowledge interrupt on exit" VM-exit is set,
2585	the VM-exit interruption info. field must be valid. */
2586	Assert( uExitReason != VMX_EXIT_EXT_INT
2587	\|\| !(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_ACK_EXT_INT)
2588	\|\| VMX_EXIT_INT_INFO_IS_VALID(pVmcs->u32RoExitIntInfo));
2589
2590	/*
2591	* If we support storing EFER.LMA into IA32e-mode guest field on VM-exit, we need to do that now.
2592	* See Intel spec. 27.2 "Recording VM-exit Information And Updating VM-entry Control".
2593	*
2594	* It is not clear from the Intel spec. if this is done only when VM-entry succeeds.
2595	* If a VM-exit happens before loading guest EFER, we risk restoring the host EFER.LMA
2596	* as guest-CPU state would not been modified. Hence for now, we do this only when
2597	* the VM-entry succeeded.
2598	*/
2599	/** @todo r=ramshankar: Figure out if this bit gets set to host EFER.LMA on real
2600	* hardware when VM-exit fails during VM-entry (e.g. VERR_VMX_INVALID_GUEST_STATE). */
2601	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxExitSaveEferLma)
2602	{
2603	if (pVCpu->cpum.GstCtx.msrEFER & MSR_K6_EFER_LMA)
2604	pVmcs->u32EntryCtls \|= VMX_ENTRY_CTLS_IA32E_MODE_GUEST;
2605	else
2606	pVmcs->u32EntryCtls &= ~VMX_ENTRY_CTLS_IA32E_MODE_GUEST;
2607	}
2608
2609	/*
2610	* The rest of the high bits of the VM-exit reason are only relevant when the VM-exit
2611	* occurs in enclave mode/SMM which we don't support yet.
2612	*
2613	* If we ever add support for it, we can pass just the lower bits to the functions
2614	* below, till then an assert should suffice.
2615	*/
2616	Assert(!RT_HI_U16(uExitReason));
2617
2618	/* Save the guest state into the VMCS and restore guest MSRs from the auto-store guest MSR area. */
2619	iemVmxVmexitSaveGuestState(pVCpu, uExitReason);
2620	int rc = iemVmxVmexitSaveGuestAutoMsrs(pVCpu, uExitReason);
2621	if (RT_SUCCESS(rc))
2622	{ /* likely */ }
2623	else
2624	return iemVmxAbort(pVCpu, VMXABORT_SAVE_GUEST_MSRS);
2625
2626	/* Clear any saved NMI-blocking state so we don't assert on next VM-entry (if it was in effect on the previous one). */
2627	pVCpu->cpum.GstCtx.hwvirt.fSavedInhibit &= ~CPUMCTX_INHIBIT_NMI;
2628	}
2629	else
2630	{
2631	/* Restore the NMI-blocking state if VM-entry failed due to invalid guest state or while loading MSRs. */
2632	uint32_t const uExitReasonBasic = VMX_EXIT_REASON_BASIC(uExitReason);
2633	if ( uExitReasonBasic == VMX_EXIT_ERR_INVALID_GUEST_STATE
2634	\|\| uExitReasonBasic == VMX_EXIT_ERR_MSR_LOAD)
2635	iemVmxVmexitRestoreNmiBlockingFF(pVCpu);
2636	}
2637
2638	/*
2639	* Stop any running VMX-preemption timer if necessary.
2640	*/
2641	if (pVmcs->u32PinCtls & VMX_PIN_CTLS_PREEMPT_TIMER)
2642	CPUMStopGuestVmxPremptTimer(pVCpu);
2643
2644	/*
2645	* Clear the state of "NMI unblocked due to IRET" as otherwise we risk
2646	* reporting a stale state on a subsequent VM-exit. This state will be
2647	* re-established while emulating IRET in VMX non-root mode.
2648	*/
2649	pVCpu->cpum.GstCtx.hwvirt.vmx.fNmiUnblockingIret = false;
2650
2651	/*
2652	* Clear any pending VMX nested-guest force-flags.
2653	* These force-flags have no effect on (outer) guest execution and will
2654	* be re-evaluated and setup on the next nested-guest VM-entry.
2655	*/
2656	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_VMX_ALL_MASK);
2657
2658	/*
2659	* We're no longer in nested-guest execution mode.
2660	*
2661	* It is important to do this prior to loading the host state because
2662	* PGM looks at fInVmxNonRootMode to determine if it needs to perform
2663	* second-level address translation while switching to host CR3.
2664	*/
2665	pVCpu->cpum.GstCtx.hwvirt.vmx.fInVmxNonRootMode = false;
2666
2667	/* Restore the host (outer guest) state. */
2668	VBOXSTRICTRC rcStrict = iemVmxVmexitLoadHostState(pVCpu, uExitReason);
2669	if (RT_SUCCESS(rcStrict))
2670	{
2671	Assert(rcStrict == VINF_SUCCESS);
2672	rcStrict = VINF_VMX_VMEXIT;
2673	}
2674	else
2675	Log(("vmexit: Loading host-state failed. uExitReason=%u rc=%Rrc\n", uExitReason, VBOXSTRICTRC_VAL(rcStrict)));
2676
2677	/*
2678	* Restore non-zero Secondary-processor based VM-execution controls
2679	* when the "activate secondary controls" bit was not set.
2680	*/
2681	if (pVmcs->u32RestoreProcCtls2)
2682	{
2683	Assert(!(pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_SECONDARY_CTLS));
2684	pVmcs->u32ProcCtls2 = pVmcs->u32RestoreProcCtls2;
2685	pVmcs->u32RestoreProcCtls2 = 0;
2686	}
2687
2688	if (VM_IS_HM_ENABLED(pVCpu->CTX_SUFF(pVM)))
2689	{
2690	/* Notify HM that the current VMCS fields have been modified. */
2691	HMNotifyVmxNstGstCurrentVmcsChanged(pVCpu);
2692
2693	/* Notify HM that we've completed the VM-exit. */
2694	HMNotifyVmxNstGstVmexit(pVCpu);
2695	}
2696
2697	# if defined(VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM) && defined(IN_RING3)
2698	/* Revert any IEM-only nested-guest execution policy, otherwise return rcStrict. */
2699	Log(("vmexit: Disabling IEM-only EM execution policy!\n"));
2700	int rcSched = EMR3SetExecutionPolicy(pVCpu->CTX_SUFF(pVM)->pUVM, EMEXECPOLICY_IEM_ALL, false);
2701	if (rcSched != VINF_SUCCESS)
2702	iemSetPassUpStatus(pVCpu, rcSched);
2703	# endif
2704	return rcStrict;
2705	# endif
2706	}
2707
2708
2709	/**
2710	* VMX VM-exit handler for VM-exits due to instruction execution.
2711	*
2712	* This is intended for instructions where the caller provides all the relevant
2713	* VM-exit information.
2714	*
2715	* @returns Strict VBox status code.
2716	* @param pVCpu The cross context virtual CPU structure.
2717	* @param pExitInfo Pointer to the VM-exit information.
2718	*/
2719	static VBOXSTRICTRC iemVmxVmexitInstrWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
2720	{
2721	/*
2722	* For instructions where any of the following fields are not applicable:
2723	* - Exit qualification must be cleared.
2724	* - VM-exit instruction info. is undefined.
2725	* - Guest-linear address is undefined.
2726	* - Guest-physical address is undefined.
2727	*
2728	* The VM-exit instruction length is mandatory for all VM-exits that are caused by
2729	* instruction execution. For VM-exits that are not due to instruction execution this
2730	* field is undefined.
2731	*
2732	* In our implementation in IEM, all undefined fields are generally cleared. However,
2733	* if the caller supplies information (from say the physical CPU directly) it is
2734	* then possible that the undefined fields are not cleared.
2735	*
2736	* See Intel spec. 27.2.1 "Basic VM-Exit Information".
2737	* See Intel spec. 27.2.4 "Information for VM Exits Due to Instruction Execution".
2738	*/
2739	Assert(pExitInfo);
2740	AssertMsg(pExitInfo->uReason <= VMX_EXIT_MAX, ("uReason=%u\n", pExitInfo->uReason));
2741	AssertMsg(pExitInfo->cbInstr >= 1 && pExitInfo->cbInstr <= 15,
2742	("uReason=%u cbInstr=%u\n", pExitInfo->uReason, pExitInfo->cbInstr));
2743
2744	/* Update all the relevant fields from the VM-exit instruction information struct. */
2745	iemVmxVmcsSetExitInstrInfo(pVCpu, pExitInfo->InstrInfo.u);
2746	iemVmxVmcsSetExitGuestLinearAddr(pVCpu, pExitInfo->u64GuestLinearAddr);
2747	iemVmxVmcsSetExitGuestPhysAddr(pVCpu, pExitInfo->u64GuestPhysAddr);
2748	iemVmxVmcsSetExitInstrLen(pVCpu, pExitInfo->cbInstr);
2749
2750	/* Perform the VM-exit. */
2751	return iemVmxVmexit(pVCpu, pExitInfo->uReason, pExitInfo->u64Qual);
2752	}
2753
2754
2755	/**
2756	* VMX VM-exit handler for VM-exits due to instruction execution.
2757	*
2758	* This is intended for instructions that only provide the VM-exit instruction
2759	* length.
2760	*
2761	* @param pVCpu The cross context virtual CPU structure.
2762	* @param uExitReason The VM-exit reason.
2763	* @param cbInstr The instruction length in bytes.
2764	*/
2765	VBOXSTRICTRC iemVmxVmexitInstr(PVMCPUCC pVCpu, uint32_t uExitReason, uint8_t cbInstr) RT_NOEXCEPT
2766	{
2767	#ifdef VBOX_STRICT
2768	/*
2769	* To prevent us from shooting ourselves in the foot.
2770	* The follow instructions should convey more than just the instruction length.
2771	*/
2772	switch (uExitReason)
2773	{
2774	case VMX_EXIT_INVEPT:
2775	case VMX_EXIT_INVPCID:
2776	case VMX_EXIT_INVVPID:
2777	case VMX_EXIT_LDTR_TR_ACCESS:
2778	case VMX_EXIT_GDTR_IDTR_ACCESS:
2779	case VMX_EXIT_VMCLEAR:
2780	case VMX_EXIT_VMPTRLD:
2781	case VMX_EXIT_VMPTRST:
2782	case VMX_EXIT_VMREAD:
2783	case VMX_EXIT_VMWRITE:
2784	case VMX_EXIT_VMXON:
2785	case VMX_EXIT_XRSTORS:
2786	case VMX_EXIT_XSAVES:
2787	case VMX_EXIT_RDRAND:
2788	case VMX_EXIT_RDSEED:
2789	case VMX_EXIT_IO_INSTR:
2790	AssertMsgFailedReturn(("Use iemVmxVmexitInstrNeedsInfo for uExitReason=%u\n", uExitReason), VERR_IEM_IPE_5);
2791	break;
2792	}
2793	#endif
2794
2795	VMXVEXITINFO const ExitInfo = VMXVEXITINFO_INIT_WITH_INSTR_LEN(uExitReason, cbInstr);
2796	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
2797	}
2798
2799
2800	/**
2801	* Interface for HM and EM to emulate VM-exit due to a triple-fault.
2802	*
2803	* @returns Strict VBox status code.
2804	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2805	* @thread EMT(pVCpu)
2806	*/
2807	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitTripleFault(PVMCPUCC pVCpu)
2808	{
2809	VBOXSTRICTRC rcStrict = iemVmxVmexit(pVCpu, VMX_EXIT_TRIPLE_FAULT, 0 /* u64ExitQual */);
2810	Assert(!pVCpu->iem.s.cActiveMappings);
2811	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
2812	}
2813
2814
2815	/**
2816	* Interface for HM and EM to emulate VM-exit due to startup-IPI (SIPI).
2817	*
2818	* @returns Strict VBox status code.
2819	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2820	* @param uVector The SIPI vector.
2821	* @thread EMT(pVCpu)
2822	*/
2823	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitStartupIpi(PVMCPUCC pVCpu, uint8_t uVector)
2824	{
2825	VBOXSTRICTRC rcStrict = iemVmxVmexit(pVCpu, VMX_EXIT_SIPI, uVector);
2826	Assert(!pVCpu->iem.s.cActiveMappings);
2827	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
2828	}
2829
2830
2831	/**
2832	* Interface for HM and EM to emulate a VM-exit.
2833	*
2834	* If a specialized version of a VM-exit handler exists, that must be used instead.
2835	*
2836	* @returns Strict VBox status code.
2837	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2838	* @param uExitReason The VM-exit reason.
2839	* @param u64ExitQual The Exit qualification.
2840	* @thread EMT(pVCpu)
2841	*/
2842	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexit(PVMCPUCC pVCpu, uint32_t uExitReason, uint64_t u64ExitQual)
2843	{
2844	VBOXSTRICTRC rcStrict = iemVmxVmexit(pVCpu, uExitReason, u64ExitQual);
2845	Assert(!pVCpu->iem.s.cActiveMappings);
2846	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
2847	}
2848
2849
2850	/**
2851	* Interface for HM and EM to emulate a VM-exit due to an instruction.
2852	*
2853	* This is meant to be used for those instructions that VMX provides additional
2854	* decoding information beyond just the instruction length!
2855	*
2856	* @returns Strict VBox status code.
2857	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2858	* @param pExitInfo Pointer to the VM-exit information.
2859	* @thread EMT(pVCpu)
2860	*/
2861	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitInstrWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
2862	{
2863	VBOXSTRICTRC rcStrict = iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
2864	Assert(!pVCpu->iem.s.cActiveMappings);
2865	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
2866	}
2867
2868
2869	/**
2870	* Interface for HM and EM to emulate a VM-exit due to an instruction.
2871	*
2872	* This is meant to be used for those instructions that VMX provides only the
2873	* instruction length.
2874	*
2875	* @returns Strict VBox status code.
2876	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2877	* @param pExitInfo Pointer to the VM-exit information.
2878	* @param cbInstr The instruction length in bytes.
2879	* @thread EMT(pVCpu)
2880	*/
2881	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitInstr(PVMCPUCC pVCpu, uint32_t uExitReason, uint8_t cbInstr)
2882	{
2883	VBOXSTRICTRC rcStrict = iemVmxVmexitInstr(pVCpu, uExitReason, cbInstr);
2884	Assert(!pVCpu->iem.s.cActiveMappings);
2885	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
2886	}
2887
2888
2889	/**
2890	* VMX VM-exit handler for VM-exits due to instruction execution.
2891	*
2892	* This is intended for instructions that have a ModR/M byte and update the VM-exit
2893	* instruction information and Exit qualification fields.
2894	*
2895	* @param pVCpu The cross context virtual CPU structure.
2896	* @param uExitReason The VM-exit reason.
2897	* @param uInstrid The instruction identity (VMXINSTRID_XXX).
2898	* @param cbInstr The instruction length in bytes.
2899	*
2900	* @remarks Do not use this for INS/OUTS instruction.
2901	*/
2902	VBOXSTRICTRC iemVmxVmexitInstrNeedsInfo(PVMCPUCC pVCpu, uint32_t uExitReason, VMXINSTRID uInstrId, uint8_t cbInstr) RT_NOEXCEPT
2903	{
2904	#ifdef VBOX_STRICT
2905	/*
2906	* To prevent us from shooting ourselves in the foot.
2907	* The follow instructions convey specific info that require using their respective handlers.
2908	*/
2909	switch (uExitReason)
2910	{
2911	case VMX_EXIT_INVEPT:
2912	case VMX_EXIT_INVPCID:
2913	case VMX_EXIT_INVVPID:
2914	case VMX_EXIT_LDTR_TR_ACCESS:
2915	case VMX_EXIT_GDTR_IDTR_ACCESS:
2916	case VMX_EXIT_VMCLEAR:
2917	case VMX_EXIT_VMPTRLD:
2918	case VMX_EXIT_VMPTRST:
2919	case VMX_EXIT_VMREAD:
2920	case VMX_EXIT_VMWRITE:
2921	case VMX_EXIT_VMXON:
2922	case VMX_EXIT_XRSTORS:
2923	case VMX_EXIT_XSAVES:
2924	case VMX_EXIT_RDRAND:
2925	case VMX_EXIT_RDSEED:
2926	break;
2927	default:
2928	AssertMsgFailedReturn(("Use instruction-specific handler\n"), VERR_IEM_IPE_5);
2929	break;
2930	}
2931	#endif
2932
2933	/*
2934	* Update the Exit qualification field with displacement bytes.
2935	* See Intel spec. 27.2.1 "Basic VM-Exit Information".
2936	*/
2937	/* Construct the VM-exit instruction information. */
2938	RTGCPTR GCPtrDisp;
2939	uint32_t const uInstrInfo = iemVmxGetExitInstrInfo(pVCpu, uExitReason, uInstrId, &GCPtrDisp);
2940
2941	VMXVEXITINFO const ExitInfo = VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_INFO(uExitReason, GCPtrDisp, uInstrInfo, cbInstr);
2942	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
2943	}
2944
2945
2946	/**
2947	* VMX VM-exit handler for VM-exits due to INVLPG.
2948	*
2949	* @returns Strict VBox status code.
2950	* @param pVCpu The cross context virtual CPU structure.
2951	* @param GCPtrPage The guest-linear address of the page being invalidated.
2952	* @param cbInstr The instruction length in bytes.
2953	*/
2954	VBOXSTRICTRC iemVmxVmexitInstrInvlpg(PVMCPUCC pVCpu, RTGCPTR GCPtrPage, uint8_t cbInstr) RT_NOEXCEPT
2955	{
2956	VMXVEXITINFO const ExitInfo = VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_INVLPG, GCPtrPage, cbInstr);
2957	Assert(IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode \|\| !RT_HI_U32(ExitInfo.u64Qual));
2958	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
2959	}
2960
2961
2962	/**
2963	* VMX VM-exit handler for VM-exits due to LMSW.
2964	*
2965	* @returns Strict VBox status code.
2966	* @param pVCpu The cross context virtual CPU structure.
2967	* @param uGuestCr0 The current guest CR0.
2968	* @param pu16NewMsw The machine-status word specified in LMSW's source
2969	* operand. This will be updated depending on the VMX
2970	* guest/host CR0 mask if LMSW is not intercepted.
2971	* @param GCPtrEffDst The guest-linear address of the source operand in case
2972	* of a memory operand. For register operand, pass
2973	* NIL_RTGCPTR.
2974	* @param cbInstr The instruction length in bytes.
2975	*/
2976	VBOXSTRICTRC iemVmxVmexitInstrLmsw(PVMCPUCC pVCpu, uint32_t uGuestCr0, uint16_t *pu16NewMsw,
2977	RTGCPTR GCPtrEffDst, uint8_t cbInstr) RT_NOEXCEPT
2978	{
2979	Assert(pu16NewMsw);
2980
2981	uint16_t const uNewMsw = *pu16NewMsw;
2982	if (CPUMIsGuestVmxLmswInterceptSet(&pVCpu->cpum.GstCtx, uNewMsw))
2983	{
2984	Log2(("lmsw: Guest intercept -> VM-exit\n"));
2985	bool const fMemOperand = RT_BOOL(GCPtrEffDst != NIL_RTGCPTR);
2986	VMXVEXITINFO ExitInfo
2987	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
2988	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 0) /* CR0 */
2989	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_LMSW_OP, fMemOperand)
2990	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_LMSW_DATA, uNewMsw)
2991	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS, VMX_EXIT_QUAL_CRX_ACCESS_LMSW),
2992	cbInstr);
2993	if (fMemOperand)
2994	{
2995	Assert(IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode \|\| !RT_HI_U32(GCPtrEffDst));
2996	ExitInfo.u64GuestLinearAddr = GCPtrEffDst;
2997	}
2998	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
2999	}
3000
3001	/*
3002	* If LMSW did not cause a VM-exit, any CR0 bits in the range 0:3 that is set in the
3003	* CR0 guest/host mask must be left unmodified.
3004	*
3005	* See Intel Spec. 25.3 "Changes To Instruction Behavior In VMX Non-root Operation".
3006	*/
3007	uint32_t const fGstHostMask = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64Cr0Mask.u;
3008	uint32_t const fGstHostLmswMask = fGstHostMask & (X86_CR0_PE \| X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS);
3009	*pu16NewMsw = (uGuestCr0 & fGstHostLmswMask) \| (uNewMsw & ~fGstHostLmswMask);
3010
3011	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3012	}
3013
3014
3015	/**
3016	* VMX VM-exit handler for VM-exits due to CLTS.
3017	*
3018	* @returns Strict VBox status code.
3019	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the CLTS instruction did not cause a
3020	* VM-exit but must not modify the guest CR0.TS bit.
3021	* @retval VINF_VMX_INTERCEPT_NOT_ACTIVE if the CLTS instruction did not cause a
3022	* VM-exit and modification to the guest CR0.TS bit is allowed (subject to
3023	* CR0 fixed bits in VMX operation).
3024	* @param pVCpu The cross context virtual CPU structure.
3025	* @param cbInstr The instruction length in bytes.
3026	*/
3027	VBOXSTRICTRC iemVmxVmexitInstrClts(PVMCPUCC pVCpu, uint8_t cbInstr) RT_NOEXCEPT
3028	{
3029	/*
3030	* If CR0.TS is owned by the host:
3031	* - If CR0.TS is set in the read-shadow, we must cause a VM-exit.
3032	* - If CR0.TS is cleared in the read-shadow, no VM-exit is caused and the
3033	* CLTS instruction completes without clearing CR0.TS.
3034	*
3035	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3036	*/
3037	uint32_t const fGstHostMask = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64Cr0Mask.u;
3038	if (fGstHostMask & X86_CR0_TS)
3039	{
3040	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64Cr0ReadShadow.u & X86_CR0_TS)
3041	{
3042	Log2(("clts: Guest intercept -> VM-exit\n"));
3043	VMXVEXITINFO const ExitInfo
3044	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3045	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 0) /* CR0 */
3046	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS,
3047	VMX_EXIT_QUAL_CRX_ACCESS_CLTS),
3048	cbInstr);
3049	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3050	}
3051	return VINF_VMX_MODIFIES_BEHAVIOR;
3052	}
3053
3054	/*
3055	* If CR0.TS is not owned by the host, the CLTS instructions operates normally
3056	* and may modify CR0.TS (subject to CR0 fixed bits in VMX operation).
3057	*/
3058	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3059	}
3060
3061
3062	/**
3063	* VMX VM-exit handler for VM-exits due to 'Mov CR0,GReg' and 'Mov CR4,GReg'
3064	* (CR0/CR4 write).
3065	*
3066	* @returns Strict VBox status code.
3067	* @param pVCpu The cross context virtual CPU structure.
3068	* @param iCrReg The control register (either CR0 or CR4).
3069	* @param uGuestCrX The current guest CR0/CR4.
3070	* @param puNewCrX Pointer to the new CR0/CR4 value. Will be updated if no
3071	* VM-exit is caused.
3072	* @param iGReg The general register from which the CR0/CR4 value is being
3073	* loaded.
3074	* @param cbInstr The instruction length in bytes.
3075	*/
3076	VBOXSTRICTRC iemVmxVmexitInstrMovToCr0Cr4(PVMCPUCC pVCpu, uint8_t iCrReg, uint64_t *puNewCrX,
3077	uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3078	{
3079	Assert(puNewCrX);
3080	Assert(iCrReg == 0 \|\| iCrReg == 4);
3081	Assert(iGReg < X86_GREG_COUNT);
3082
3083	uint64_t const uNewCrX = *puNewCrX;
3084	if (CPUMIsGuestVmxMovToCr0Cr4InterceptSet(&pVCpu->cpum.GstCtx, iCrReg, uNewCrX))
3085	{
3086	Log2(("mov_Cr_Rd: (CR%u) Guest intercept -> VM-exit\n", iCrReg));
3087	VMXVEXITINFO const ExitInfo
3088	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3089	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, iCrReg)
3090	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_GENREG, iGReg)
3091	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS, VMX_EXIT_QUAL_CRX_ACCESS_WRITE),
3092	cbInstr);
3093	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3094	}
3095
3096	/*
3097	* If the Mov-to-CR0/CR4 did not cause a VM-exit, any bits owned by the host
3098	* must not be modified the instruction.
3099	*
3100	* See Intel Spec. 25.3 "Changes To Instruction Behavior In VMX Non-root Operation".
3101	*/
3102	uint64_t uGuestCrX;
3103	uint64_t fGstHostMask;
3104	if (iCrReg == 0)
3105	{
3106	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0);
3107	uGuestCrX = pVCpu->cpum.GstCtx.cr0;
3108	fGstHostMask = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64Cr0Mask.u;
3109	}
3110	else
3111	{
3112	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR4);
3113	uGuestCrX = pVCpu->cpum.GstCtx.cr4;
3114	fGstHostMask = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64Cr4Mask.u;
3115	}
3116
3117	puNewCrX = (uGuestCrX & fGstHostMask) \| (puNewCrX & ~fGstHostMask);
3118	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3119	}
3120
3121
3122	/**
3123	* VMX VM-exit handler for VM-exits due to 'Mov GReg,CR3' (CR3 read).
3124	*
3125	* @returns VBox strict status code.
3126	* @param pVCpu The cross context virtual CPU structure.
3127	* @param iGReg The general register to which the CR3 value is being stored.
3128	* @param cbInstr The instruction length in bytes.
3129	*/
3130	VBOXSTRICTRC iemVmxVmexitInstrMovFromCr3(PVMCPUCC pVCpu, uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3131	{
3132	Assert(iGReg < X86_GREG_COUNT);
3133	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR3);
3134
3135	/*
3136	* If the CR3-store exiting control is set, we must cause a VM-exit.
3137	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3138	*/
3139	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_CR3_STORE_EXIT)
3140	{
3141	Log2(("mov_Rd_Cr: (CR3) Guest intercept -> VM-exit\n"));
3142	VMXVEXITINFO const ExitInfo
3143	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3144	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 3) /* CR3 */
3145	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_GENREG, iGReg)
3146	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS, VMX_EXIT_QUAL_CRX_ACCESS_READ),
3147	cbInstr);
3148	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3149	}
3150	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3151	}
3152
3153
3154	/**
3155	* VMX VM-exit handler for VM-exits due to 'Mov CR3,GReg' (CR3 write).
3156	*
3157	* @returns VBox strict status code.
3158	* @param pVCpu The cross context virtual CPU structure.
3159	* @param uNewCr3 The new CR3 value.
3160	* @param iGReg The general register from which the CR3 value is being
3161	* loaded.
3162	* @param cbInstr The instruction length in bytes.
3163	*/
3164	VBOXSTRICTRC iemVmxVmexitInstrMovToCr3(PVMCPUCC pVCpu, uint64_t uNewCr3, uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3165	{
3166	Assert(iGReg < X86_GREG_COUNT);
3167
3168	/*
3169	* If the CR3-load exiting control is set and the new CR3 value does not
3170	* match any of the CR3-target values in the VMCS, we must cause a VM-exit.
3171	*
3172	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3173	*/
3174	if (CPUMIsGuestVmxMovToCr3InterceptSet(pVCpu, uNewCr3))
3175	{
3176	Log2(("mov_Cr_Rd: (CR3) Guest intercept -> VM-exit\n"));
3177	VMXVEXITINFO const ExitInfo
3178	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3179	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 3) /* CR3 */
3180	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_GENREG, iGReg)
3181	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS,
3182	VMX_EXIT_QUAL_CRX_ACCESS_WRITE),
3183	cbInstr);
3184	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3185	}
3186	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3187	}
3188
3189
3190	/**
3191	* VMX VM-exit handler for VM-exits due to 'Mov GReg,CR8' (CR8 read).
3192	*
3193	* @returns VBox strict status code.
3194	* @param pVCpu The cross context virtual CPU structure.
3195	* @param iGReg The general register to which the CR8 value is being stored.
3196	* @param cbInstr The instruction length in bytes.
3197	*/
3198	VBOXSTRICTRC iemVmxVmexitInstrMovFromCr8(PVMCPUCC pVCpu, uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3199	{
3200	Assert(iGReg < X86_GREG_COUNT);
3201
3202	/*
3203	* If the CR8-store exiting control is set, we must cause a VM-exit.
3204	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3205	*/
3206	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_CR8_STORE_EXIT)
3207	{
3208	Log2(("mov_Rd_Cr: (CR8) Guest intercept -> VM-exit\n"));
3209	VMXVEXITINFO const ExitInfo
3210	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3211	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 8) /* CR8 */
3212	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_GENREG, iGReg)
3213	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS, VMX_EXIT_QUAL_CRX_ACCESS_READ),
3214	cbInstr);
3215	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3216	}
3217	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3218	}
3219
3220
3221	/**
3222	* VMX VM-exit handler for VM-exits due to 'Mov CR8,GReg' (CR8 write).
3223	*
3224	* @returns VBox strict status code.
3225	* @param pVCpu The cross context virtual CPU structure.
3226	* @param iGReg The general register from which the CR8 value is being
3227	* loaded.
3228	* @param cbInstr The instruction length in bytes.
3229	*/
3230	VBOXSTRICTRC iemVmxVmexitInstrMovToCr8(PVMCPUCC pVCpu, uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3231	{
3232	Assert(iGReg < X86_GREG_COUNT);
3233
3234	/*
3235	* If the CR8-load exiting control is set, we must cause a VM-exit.
3236	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3237	*/
3238	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_CR8_LOAD_EXIT)
3239	{
3240	Log2(("mov_Cr_Rd: (CR8) Guest intercept -> VM-exit\n"));
3241	VMXVEXITINFO const ExitInfo
3242	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_CRX,
3243	RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_REGISTER, 8) /* CR8 */
3244	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_GENREG, iGReg)
3245	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_CRX_ACCESS, VMX_EXIT_QUAL_CRX_ACCESS_WRITE),
3246	cbInstr);
3247	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3248	}
3249	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3250	}
3251
3252
3253	/**
3254	* VMX VM-exit handler for VM-exits due to 'Mov DRx,GReg' (DRx write) and 'Mov
3255	* GReg,DRx' (DRx read).
3256	*
3257	* @returns VBox strict status code.
3258	* @param pVCpu The cross context virtual CPU structure.
3259	* @param uInstrid The instruction identity (VMXINSTRID_MOV_TO_DRX or
3260	* VMXINSTRID_MOV_FROM_DRX).
3261	* @param iDrReg The debug register being accessed.
3262	* @param iGReg The general register to/from which the DRx value is being
3263	* store/loaded.
3264	* @param cbInstr The instruction length in bytes.
3265	*/
3266	VBOXSTRICTRC iemVmxVmexitInstrMovDrX(PVMCPUCC pVCpu, VMXINSTRID uInstrId, uint8_t iDrReg,
3267	uint8_t iGReg, uint8_t cbInstr) RT_NOEXCEPT
3268	{
3269	Assert(iDrReg <= 7);
3270	Assert(uInstrId == VMXINSTRID_MOV_TO_DRX \|\| uInstrId == VMXINSTRID_MOV_FROM_DRX);
3271	Assert(iGReg < X86_GREG_COUNT);
3272
3273	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_MOV_DR_EXIT)
3274	{
3275	VMXVEXITINFO const ExitInfo
3276	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MOV_DRX,
3277	RT_BF_MAKE(VMX_BF_EXIT_QUAL_DRX_REGISTER, iDrReg)
3278	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_DRX_GENREG, iGReg)
3279	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_DRX_DIRECTION,
3280	uInstrId == VMXINSTRID_MOV_TO_DRX
3281	? VMX_EXIT_QUAL_DRX_DIRECTION_WRITE
3282	: VMX_EXIT_QUAL_DRX_DIRECTION_READ),
3283	cbInstr);
3284	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3285	}
3286
3287	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3288	}
3289
3290
3291	/**
3292	* VMX VM-exit handler for VM-exits due to I/O instructions (IN and OUT).
3293	*
3294	* @returns VBox strict status code.
3295	* @param pVCpu The cross context virtual CPU structure.
3296	* @param uInstrId The VM-exit instruction identity (VMXINSTRID_IO_IN or
3297	* VMXINSTRID_IO_OUT).
3298	* @param u16Port The I/O port being accessed.
3299	* @param fImm Whether the I/O port was encoded using an immediate operand
3300	* or the implicit DX register.
3301	* @param cbAccess The size of the I/O access in bytes (1, 2 or 4 bytes).
3302	* @param cbInstr The instruction length in bytes.
3303	*/
3304	VBOXSTRICTRC iemVmxVmexitInstrIo(PVMCPUCC pVCpu, VMXINSTRID uInstrId, uint16_t u16Port,
3305	bool fImm, uint8_t cbAccess, uint8_t cbInstr) RT_NOEXCEPT
3306	{
3307	Assert(uInstrId == VMXINSTRID_IO_IN \|\| uInstrId == VMXINSTRID_IO_OUT);
3308	Assert(cbAccess == 1 \|\| cbAccess == 2 \|\| cbAccess == 4);
3309
3310	if (CPUMIsGuestVmxIoInterceptSet(pVCpu, u16Port, cbAccess))
3311	{
3312	VMXVEXITINFO const ExitInfo
3313	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_IO_INSTR,
3314	RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_WIDTH, cbAccess - 1)
3315	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_ENCODING, fImm)
3316	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_PORT, u16Port)
3317	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_DIRECTION,
3318	uInstrId == VMXINSTRID_IO_IN
3319	? VMX_EXIT_QUAL_IO_DIRECTION_IN
3320	: VMX_EXIT_QUAL_IO_DIRECTION_OUT),
3321	cbInstr);
3322	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3323	}
3324	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3325	}
3326
3327
3328	/**
3329	* VMX VM-exit handler for VM-exits due to string I/O instructions (INS and OUTS).
3330	*
3331	* @returns VBox strict status code.
3332	* @param pVCpu The cross context virtual CPU structure.
3333	* @param uInstrId The VM-exit instruction identity (VMXINSTRID_IO_INS or
3334	* VMXINSTRID_IO_OUTS).
3335	* @param u16Port The I/O port being accessed.
3336	* @param cbAccess The size of the I/O access in bytes (1, 2 or 4 bytes).
3337	* @param fRep Whether the instruction has a REP prefix or not.
3338	* @param ExitInstrInfo The VM-exit instruction info. field.
3339	* @param cbInstr The instruction length in bytes.
3340	*/
3341	VBOXSTRICTRC iemVmxVmexitInstrStrIo(PVMCPUCC pVCpu, VMXINSTRID uInstrId, uint16_t u16Port, uint8_t cbAccess,
3342	bool fRep, VMXEXITINSTRINFO ExitInstrInfo, uint8_t cbInstr) RT_NOEXCEPT
3343	{
3344	Assert(uInstrId == VMXINSTRID_IO_INS \|\| uInstrId == VMXINSTRID_IO_OUTS);
3345	Assert(cbAccess == 1 \|\| cbAccess == 2 \|\| cbAccess == 4);
3346	Assert(ExitInstrInfo.StrIo.iSegReg < X86_SREG_COUNT);
3347	Assert(ExitInstrInfo.StrIo.u3AddrSize == 0 \|\| ExitInstrInfo.StrIo.u3AddrSize == 1 \|\| ExitInstrInfo.StrIo.u3AddrSize == 2);
3348	Assert(uInstrId != VMXINSTRID_IO_INS \|\| ExitInstrInfo.StrIo.iSegReg == X86_SREG_ES);
3349
3350	if (CPUMIsGuestVmxIoInterceptSet(pVCpu, u16Port, cbAccess))
3351	{
3352	/*
3353	* Figure out the guest-linear address and the direction bit (INS/OUTS).
3354	*/
3355	/** @todo r=ramshankar: Is there something in IEM that already does this? */
3356	static uint64_t const s_auAddrSizeMasks[] = { UINT64_C(0xffff), UINT64_C(0xffffffff), UINT64_C(0xffffffffffffffff) };
3357	uint8_t const iSegReg = ExitInstrInfo.StrIo.iSegReg;
3358	uint8_t const uAddrSize = ExitInstrInfo.StrIo.u3AddrSize;
3359	uint64_t const uAddrSizeMask = s_auAddrSizeMasks[uAddrSize];
3360
3361	uint32_t uDirection;
3362	uint64_t uGuestLinearAddr;
3363	if (uInstrId == VMXINSTRID_IO_INS)
3364	{
3365	uDirection = VMX_EXIT_QUAL_IO_DIRECTION_IN;
3366	uGuestLinearAddr = pVCpu->cpum.GstCtx.aSRegs[iSegReg].u64Base + (pVCpu->cpum.GstCtx.rdi & uAddrSizeMask);
3367	}
3368	else
3369	{
3370	uDirection = VMX_EXIT_QUAL_IO_DIRECTION_OUT;
3371	uGuestLinearAddr = pVCpu->cpum.GstCtx.aSRegs[iSegReg].u64Base + (pVCpu->cpum.GstCtx.rsi & uAddrSizeMask);
3372	}
3373
3374	/*
3375	* If the segment is unusable, the guest-linear address in undefined.
3376	* We shall clear it for consistency.
3377	*
3378	* See Intel spec. 27.2.1 "Basic VM-Exit Information".
3379	*/
3380	if (pVCpu->cpum.GstCtx.aSRegs[iSegReg].Attr.n.u1Unusable)
3381	uGuestLinearAddr = 0;
3382
3383	VMXVEXITINFO const ExitInfo
3384	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_INFO_AND_LIN_ADDR(VMX_EXIT_IO_INSTR,
3385	RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_WIDTH, cbAccess - 1)
3386	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_DIRECTION, uDirection)
3387	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_IS_STRING, 1)
3388	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_IS_REP, fRep)
3389	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_ENCODING,
3390	VMX_EXIT_QUAL_IO_ENCODING_DX)
3391	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_PORT, u16Port),
3392	IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxInsOutInfo
3393	? ExitInstrInfo.u : 0,
3394	cbInstr,
3395	uGuestLinearAddr);
3396	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3397	}
3398
3399	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3400	}
3401
3402
3403	/**
3404	* VMX VM-exit handler for VM-exits due to MWAIT.
3405	*
3406	* @returns VBox strict status code.
3407	* @param pVCpu The cross context virtual CPU structure.
3408	* @param fMonitorHwArmed Whether the address-range monitor hardware is armed.
3409	* @param cbInstr The instruction length in bytes.
3410	*/
3411	VBOXSTRICTRC iemVmxVmexitInstrMwait(PVMCPUCC pVCpu, bool fMonitorHwArmed, uint8_t cbInstr) RT_NOEXCEPT
3412	{
3413	VMXVEXITINFO const ExitInfo = VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_MWAIT, fMonitorHwArmed, cbInstr);
3414	return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
3415	}
3416
3417
3418	/**
3419	* VMX VM-exit handler for VM-exits due to PAUSE.
3420	*
3421	* @returns VBox strict status code.
3422	* @param pVCpu The cross context virtual CPU structure.
3423	* @param cbInstr The instruction length in bytes.
3424	*/
3425	static VBOXSTRICTRC iemVmxVmexitInstrPause(PVMCPUCC pVCpu, uint8_t cbInstr) RT_NOEXCEPT
3426	{
3427	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
3428
3429	/*
3430	* The PAUSE VM-exit is controlled by the "PAUSE exiting" control and the
3431	* "PAUSE-loop exiting" control.
3432	*
3433	* The PLE-Gap is the maximum number of TSC ticks between two successive executions of
3434	* the PAUSE instruction before we cause a VM-exit. The PLE-Window is the maximum amount
3435	* of TSC ticks the guest is allowed to execute in a pause loop before we must cause
3436	* a VM-exit.
3437	*
3438	* See Intel spec. 24.6.13 "Controls for PAUSE-Loop Exiting".
3439	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
3440	*/
3441	bool fIntercept = false;
3442	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_PAUSE_EXIT)
3443	fIntercept = true;
3444	else if ( (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_PAUSE_LOOP_EXIT)
3445	&& IEM_GET_CPL(pVCpu) == 0)
3446	{
3447	IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_HWVIRT);
3448
3449	/*
3450	* A previous-PAUSE-tick value of 0 is used to identify the first time
3451	* execution of a PAUSE instruction after VM-entry at CPL 0. We must
3452	* consider this to be the first execution of PAUSE in a loop according
3453	* to the Intel.
3454	*
3455	* All subsequent records for the previous-PAUSE-tick we ensure that it
3456	* cannot be zero by OR'ing 1 to rule out the TSC wrap-around cases at 0.
3457	*/
3458	uint64_t *puFirstPauseLoopTick = &pVCpu->cpum.GstCtx.hwvirt.vmx.uFirstPauseLoopTick;
3459	uint64_t *puPrevPauseTick = &pVCpu->cpum.GstCtx.hwvirt.vmx.uPrevPauseTick;
3460	uint64_t const uTick = TMCpuTickGet(pVCpu);
3461	uint32_t const uPleGap = pVmcs->u32PleGap;
3462	uint32_t const uPleWindow = pVmcs->u32PleWindow;
3463	if ( *puPrevPauseTick == 0
3464	\|\| uTick - *puPrevPauseTick > uPleGap)
3465	*puFirstPauseLoopTick = uTick;
3466	else if (uTick - *puFirstPauseLoopTick > uPleWindow)
3467	fIntercept = true;
3468
3469	*puPrevPauseTick = uTick \| 1;
3470	}
3471
3472	if (fIntercept)
3473	return iemVmxVmexitInstr(pVCpu, VMX_EXIT_PAUSE, cbInstr);
3474
3475	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3476	}
3477
3478
3479	/**
3480	* VMX VM-exit handler for VM-exits due to task switches.
3481	*
3482	* @returns VBox strict status code.
3483	* @param pVCpu The cross context virtual CPU structure.
3484	* @param enmTaskSwitch The cause of the task switch.
3485	* @param SelNewTss The selector of the new TSS.
3486	* @param cbInstr The instruction length in bytes.
3487	*/
3488	VBOXSTRICTRC iemVmxVmexitTaskSwitch(PVMCPUCC pVCpu, IEMTASKSWITCH enmTaskSwitch, RTSEL SelNewTss, uint8_t cbInstr) RT_NOEXCEPT
3489	{
3490	/*
3491	* Task-switch VM-exits are unconditional and provide the Exit qualification.
3492	*
3493	* If the cause of the task switch is due to execution of CALL, IRET or the JMP
3494	* instruction or delivery of the exception generated by one of these instructions
3495	* lead to a task switch through a task gate in the IDT, we need to provide the
3496	* VM-exit instruction length. Any other means of invoking a task switch VM-exit
3497	* leaves the VM-exit instruction length field undefined.
3498	*
3499	* See Intel spec. 25.2 "Other Causes Of VM Exits".
3500	* See Intel spec. 27.2.4 "Information for VM Exits Due to Instruction Execution".
3501	*/
3502	Assert(cbInstr <= 15);
3503
3504	uint8_t uType;
3505	switch (enmTaskSwitch)
3506	{
3507	case IEMTASKSWITCH_CALL: uType = VMX_EXIT_QUAL_TASK_SWITCH_TYPE_CALL; break;
3508	case IEMTASKSWITCH_IRET: uType = VMX_EXIT_QUAL_TASK_SWITCH_TYPE_IRET; break;
3509	case IEMTASKSWITCH_JUMP: uType = VMX_EXIT_QUAL_TASK_SWITCH_TYPE_JMP; break;
3510	case IEMTASKSWITCH_INT_XCPT: uType = VMX_EXIT_QUAL_TASK_SWITCH_TYPE_IDT; break;
3511	IEM_NOT_REACHED_DEFAULT_CASE_RET();
3512	}
3513
3514	uint64_t const u64ExitQual = RT_BF_MAKE(VMX_BF_EXIT_QUAL_TASK_SWITCH_NEW_TSS, SelNewTss)
3515	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_TASK_SWITCH_SOURCE, uType);
3516	iemVmxVmcsSetExitInstrLen(pVCpu, cbInstr);
3517	return iemVmxVmexit(pVCpu, VMX_EXIT_TASK_SWITCH, u64ExitQual);
3518	}
3519
3520
3521	/**
3522	* VMX VM-exit handler for trap-like VM-exits.
3523	*
3524	* @returns VBox strict status code.
3525	* @param pVCpu The cross context virtual CPU structure.
3526	* @param pExitInfo Pointer to the VM-exit information.
3527	* @param pExitEventInfo Pointer to the VM-exit event information.
3528	*/
3529	static VBOXSTRICTRC iemVmxVmexitTrapLikeWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
3530	{
3531	Assert(VMXIsVmexitTrapLike(pExitInfo->uReason));
3532	iemVmxVmcsSetGuestPendingDbgXcpts(pVCpu, pExitInfo->u64GuestPendingDbgXcpts);
3533	return iemVmxVmexit(pVCpu, pExitInfo->uReason, pExitInfo->u64Qual);
3534	}
3535
3536
3537	/**
3538	* Interface for HM and EM to emulate a trap-like VM-exit (MTF, APIC-write,
3539	* Virtualized-EOI, TPR-below threshold).
3540	*
3541	* @returns Strict VBox status code.
3542	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3543	* @param pExitInfo Pointer to the VM-exit information.
3544	* @thread EMT(pVCpu)
3545	*/
3546	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitTrapLike(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
3547	{
3548	Assert(pExitInfo);
3549	VBOXSTRICTRC rcStrict = iemVmxVmexitTrapLikeWithInfo(pVCpu, pExitInfo);
3550	Assert(!pVCpu->iem.s.cActiveMappings);
3551	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3552	}
3553
3554
3555	/**
3556	* VMX VM-exit handler for VM-exits due to task switches.
3557	*
3558	* This is intended for task switches where the caller provides all the relevant
3559	* VM-exit information.
3560	*
3561	* @returns VBox strict status code.
3562	* @param pVCpu The cross context virtual CPU structure.
3563	* @param pExitInfo Pointer to the VM-exit information.
3564	* @param pExitEventInfo Pointer to the VM-exit event information.
3565	*/
3566	static VBOXSTRICTRC iemVmxVmexitTaskSwitchWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo,
3567	PCVMXVEXITEVENTINFO pExitEventInfo) RT_NOEXCEPT
3568	{
3569	Assert(pExitInfo->uReason == VMX_EXIT_TASK_SWITCH);
3570	iemVmxVmcsSetExitInstrLen(pVCpu, pExitInfo->cbInstr);
3571	iemVmxVmcsSetIdtVectoringInfo(pVCpu, pExitEventInfo->uIdtVectoringInfo);
3572	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, pExitEventInfo->uIdtVectoringErrCode);
3573	return iemVmxVmexit(pVCpu, VMX_EXIT_TASK_SWITCH, pExitInfo->u64Qual);
3574	}
3575
3576
3577	/**
3578	* Interface for HM and EM to emulate a VM-exit due to a task switch.
3579	*
3580	* @returns Strict VBox status code.
3581	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3582	* @param pExitInfo Pointer to the VM-exit information.
3583	* @param pExitEventInfo Pointer to the VM-exit event information.
3584	* @thread EMT(pVCpu)
3585	*/
3586	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitTaskSwitch(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo, PCVMXVEXITEVENTINFO pExitEventInfo)
3587	{
3588	Assert(pExitInfo);
3589	Assert(pExitEventInfo);
3590	Assert(pExitInfo->uReason == VMX_EXIT_TASK_SWITCH);
3591	VBOXSTRICTRC rcStrict = iemVmxVmexitTaskSwitchWithInfo(pVCpu, pExitInfo, pExitEventInfo);
3592	Assert(!pVCpu->iem.s.cActiveMappings);
3593	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3594	}
3595
3596
3597	/**
3598	* VMX VM-exit handler for VM-exits due to expiring of the preemption timer.
3599	*
3600	* @returns VBox strict status code.
3601	* @param pVCpu The cross context virtual CPU structure.
3602	*/
3603	VBOXSTRICTRC iemVmxVmexitPreemptTimer(PVMCPUCC pVCpu) RT_NOEXCEPT
3604	{
3605	Assert(VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_PREEMPT_TIMER));
3606	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32PinCtls & VMX_PIN_CTLS_PREEMPT_TIMER);
3607
3608	/* Import the hardware virtualization state (for nested-guest VM-entry TSC-tick). */
3609	IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_HWVIRT);
3610
3611	/* Save the VMX-preemption timer value (of 0) back in to the VMCS if the CPU supports this feature. */
3612	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ExitCtls & VMX_EXIT_CTLS_SAVE_PREEMPT_TIMER)
3613	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32PreemptTimer = 0;
3614
3615	/* Cause the VMX-preemption timer VM-exit. The Exit qualification MBZ. */
3616	return iemVmxVmexit(pVCpu, VMX_EXIT_PREEMPT_TIMER, 0 /* u64ExitQual */);
3617	}
3618
3619
3620	/**
3621	* Interface for HM and EM to emulate VM-exit due to expiry of the preemption timer.
3622	*
3623	* @returns Strict VBox status code.
3624	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3625	* @thread EMT(pVCpu)
3626	*/
3627	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitPreemptTimer(PVMCPUCC pVCpu)
3628	{
3629	VBOXSTRICTRC rcStrict = iemVmxVmexitPreemptTimer(pVCpu);
3630	Assert(!pVCpu->iem.s.cActiveMappings);
3631	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3632	}
3633
3634
3635	/**
3636	* VMX VM-exit handler for VM-exits due to external interrupts.
3637	*
3638	* @returns VBox strict status code.
3639	* @param pVCpu The cross context virtual CPU structure.
3640	* @param uVector The external interrupt vector (pass 0 if the interrupt
3641	* is still pending since we typically won't know the
3642	* vector).
3643	* @param fIntPending Whether the external interrupt is pending or
3644	* acknowledged in the interrupt controller.
3645	*/
3646	static VBOXSTRICTRC iemVmxVmexitExtInt(PVMCPUCC pVCpu, uint8_t uVector, bool fIntPending) RT_NOEXCEPT
3647	{
3648	Assert(!fIntPending \|\| uVector == 0);
3649
3650	/* The VM-exit is subject to "External interrupt exiting" being set. */
3651	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32PinCtls & VMX_PIN_CTLS_EXT_INT_EXIT)
3652	{
3653	if (fIntPending)
3654	{
3655	/*
3656	* If the interrupt is pending and we don't need to acknowledge the
3657	* interrupt on VM-exit, cause the VM-exit immediately.
3658	*
3659	* See Intel spec 25.2 "Other Causes Of VM Exits".
3660	*/
3661	if (!(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ExitCtls & VMX_EXIT_CTLS_ACK_EXT_INT))
3662	return iemVmxVmexit(pVCpu, VMX_EXIT_EXT_INT, 0 /* u64ExitQual */);
3663
3664	/*
3665	* If the interrupt is pending and we -do- need to acknowledge the interrupt
3666	* on VM-exit, postpone VM-exit till after the interrupt controller has been
3667	* acknowledged that the interrupt has been consumed. Callers would have to call
3668	* us again after getting the vector (and ofc, with fIntPending with false).
3669	*/
3670	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3671	}
3672
3673	/*
3674	* If the interrupt is no longer pending (i.e. it has been acknowledged) and the
3675	* "External interrupt exiting" and "Acknowledge interrupt on VM-exit" controls are
3676	* all set, we need to record the vector of the external interrupt in the
3677	* VM-exit interruption information field. Otherwise, mark this field as invalid.
3678	*
3679	* See Intel spec. 27.2.2 "Information for VM Exits Due to Vectored Events".
3680	*/
3681	uint32_t uExitIntInfo;
3682	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ExitCtls & VMX_EXIT_CTLS_ACK_EXT_INT)
3683	{
3684	bool const fNmiUnblocking = pVCpu->cpum.GstCtx.hwvirt.vmx.fNmiUnblockingIret;
3685	uExitIntInfo = RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VECTOR, uVector)
3686	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_EXT_INT)
3687	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_NMI_UNBLOCK_IRET, fNmiUnblocking)
3688	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VALID, 1);
3689	}
3690	else
3691	uExitIntInfo = 0;
3692	iemVmxVmcsSetExitIntInfo(pVCpu, uExitIntInfo);
3693
3694	/*
3695	* Cause the VM-exit whether or not the vector has been stored
3696	* in the VM-exit interruption-information field.
3697	*/
3698	return iemVmxVmexit(pVCpu, VMX_EXIT_EXT_INT, 0 /* u64ExitQual */);
3699	}
3700
3701	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3702	}
3703
3704
3705	/**
3706	* Interface for HM and EM to emulate VM-exit due to external interrupts.
3707	*
3708	* @returns Strict VBox status code.
3709	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3710	* @param uVector The external interrupt vector (pass 0 if the external
3711	* interrupt is still pending).
3712	* @param fIntPending Whether the external interrupt is pending or
3713	* acknowledged in the interrupt controller.
3714	* @thread EMT(pVCpu)
3715	*/
3716	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitExtInt(PVMCPUCC pVCpu, uint8_t uVector, bool fIntPending)
3717	{
3718	VBOXSTRICTRC rcStrict = iemVmxVmexitExtInt(pVCpu, uVector, fIntPending);
3719	Assert(!pVCpu->iem.s.cActiveMappings);
3720	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3721	}
3722
3723
3724	/**
3725	* VMX VM-exit handler for VM-exits due to a double fault caused during delivery of
3726	* an event.
3727	*
3728	* @returns VBox strict status code.
3729	* @param pVCpu The cross context virtual CPU structure.
3730	*/
3731	VBOXSTRICTRC iemVmxVmexitEventDoubleFault(PVMCPUCC pVCpu) RT_NOEXCEPT
3732	{
3733	uint32_t const fXcptBitmap = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32XcptBitmap;
3734	if (fXcptBitmap & RT_BIT(X86_XCPT_DF))
3735	{
3736	/*
3737	* The NMI-unblocking due to IRET field need not be set for double faults.
3738	* See Intel spec. 31.7.1.2 "Resuming Guest Software After Handling An Exception".
3739	*/
3740	uint32_t const uExitIntInfo = RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VECTOR, X86_XCPT_DF)
3741	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
3742	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_ERR_CODE_VALID, 1)
3743	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_NMI_UNBLOCK_IRET, 0)
3744	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VALID, 1);
3745	iemVmxVmcsSetExitIntInfo(pVCpu, uExitIntInfo);
3746	return iemVmxVmexit(pVCpu, VMX_EXIT_XCPT_OR_NMI, 0 /* u64ExitQual */);
3747	}
3748
3749	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3750	}
3751
3752
3753	/**
3754	* VMX VM-exit handler for VM-exit due to delivery of an events.
3755	*
3756	* This is intended for VM-exit due to exceptions or NMIs where the caller provides
3757	* all the relevant VM-exit information.
3758	*
3759	* @returns VBox strict status code.
3760	* @param pVCpu The cross context virtual CPU structure.
3761	* @param pExitInfo Pointer to the VM-exit information.
3762	* @param pExitEventInfo Pointer to the VM-exit event information.
3763	*/
3764	static VBOXSTRICTRC iemVmxVmexitEventWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo, PCVMXVEXITEVENTINFO pExitEventInfo) RT_NOEXCEPT
3765	{
3766	Assert(pExitInfo);
3767	Assert(pExitEventInfo);
3768	Assert(pExitInfo->uReason == VMX_EXIT_XCPT_OR_NMI);
3769	Assert(VMX_EXIT_INT_INFO_IS_VALID(pExitEventInfo->uExitIntInfo));
3770
3771	iemVmxVmcsSetExitInstrLen(pVCpu, pExitInfo->cbInstr);
3772	iemVmxVmcsSetExitIntInfo(pVCpu, pExitEventInfo->uExitIntInfo);
3773	iemVmxVmcsSetExitIntErrCode(pVCpu, pExitEventInfo->uExitIntErrCode);
3774	iemVmxVmcsSetIdtVectoringInfo(pVCpu, pExitEventInfo->uIdtVectoringInfo);
3775	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, pExitEventInfo->uIdtVectoringErrCode);
3776	return iemVmxVmexit(pVCpu, VMX_EXIT_XCPT_OR_NMI, pExitInfo->u64Qual);
3777	}
3778
3779
3780	/**
3781	* Interface for HM and EM to emulate VM-exit due to NMIs.
3782	*
3783	* @returns Strict VBox status code.
3784	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3785	* @thread EMT(pVCpu)
3786	*/
3787	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitXcptNmi(PVMCPUCC pVCpu)
3788	{
3789	VMXVEXITINFO const ExitInfo = VMXVEXITINFO_INIT_ONLY_REASON(VMX_EXIT_XCPT_OR_NMI);
3790	VMXVEXITEVENTINFO const ExitEventInfo = VMXVEXITEVENTINFO_INIT_ONLY_INT( RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VALID, 1)
3791	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_TYPE,
3792	VMX_EXIT_INT_INFO_TYPE_NMI)
3793	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VECTOR,
3794	X86_XCPT_NMI),
3795	0);
3796	VBOXSTRICTRC rcStrict = iemVmxVmexitEventWithInfo(pVCpu, &ExitInfo, &ExitEventInfo);
3797	Assert(!pVCpu->iem.s.cActiveMappings);
3798	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3799	}
3800
3801
3802	/**
3803	* Interface for HM and EM to emulate VM-exit due to exceptions.
3804	*
3805	* Exception includes NMIs, software exceptions (those generated by INT3 or
3806	* INTO) and privileged software exceptions (those generated by INT1/ICEBP).
3807	*
3808	* @returns Strict VBox status code.
3809	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3810	* @param pExitInfo Pointer to the VM-exit information.
3811	* @param pExitEventInfo Pointer to the VM-exit event information.
3812	* @thread EMT(pVCpu)
3813	*/
3814	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitXcpt(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo, PCVMXVEXITEVENTINFO pExitEventInfo)
3815	{
3816	Assert(pExitInfo);
3817	Assert(pExitEventInfo);
3818	VBOXSTRICTRC rcStrict = iemVmxVmexitEventWithInfo(pVCpu, pExitInfo, pExitEventInfo);
3819	Assert(!pVCpu->iem.s.cActiveMappings);
3820	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
3821	}
3822
3823
3824	/**
3825	* VMX VM-exit handler for VM-exits due to delivery of an event.
3826	*
3827	* @returns VBox strict status code.
3828	* @param pVCpu The cross context virtual CPU structure.
3829	* @param uVector The interrupt / exception vector.
3830	* @param fFlags The flags (see IEM_XCPT_FLAGS_XXX).
3831	* @param uErrCode The error code associated with the event.
3832	* @param uCr2 The CR2 value in case of a \#PF exception.
3833	* @param cbInstr The instruction length in bytes.
3834	*/
3835	VBOXSTRICTRC iemVmxVmexitEvent(PVMCPUCC pVCpu, uint8_t uVector, uint32_t fFlags, uint32_t uErrCode,
3836	uint64_t uCr2, uint8_t cbInstr) RT_NOEXCEPT
3837	{
3838	/*
3839	* If the event is being injected as part of VM-entry, it is -not- subject to event
3840	* intercepts in the nested-guest. However, secondary exceptions that occur during
3841	* injection of any event -are- subject to event interception.
3842	*
3843	* See Intel spec. 26.5.1.2 "VM Exits During Event Injection".
3844	*/
3845	if (!CPUMIsGuestVmxInterceptEvents(&pVCpu->cpum.GstCtx))
3846	{
3847	/*
3848	* If the event is a virtual-NMI (which is an NMI being inject during VM-entry)
3849	* virtual-NMI blocking must be set in effect rather than physical NMI blocking.
3850	*
3851	* See Intel spec. 24.6.1 "Pin-Based VM-Execution Controls".
3852	*/
3853	if ( uVector == X86_XCPT_NMI
3854	&& (fFlags & IEM_XCPT_FLAGS_T_CPU_XCPT)
3855	&& (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32PinCtls & VMX_PIN_CTLS_VIRT_NMI))
3856	pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking = true;
3857	else
3858	Assert(!pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking);
3859
3860	CPUMSetGuestVmxInterceptEvents(&pVCpu->cpum.GstCtx, true);
3861	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3862	}
3863
3864	/*
3865	* We are injecting an external interrupt, check if we need to cause a VM-exit now.
3866	* If not, the caller will continue delivery of the external interrupt as it would
3867	* normally. The interrupt is no longer pending in the interrupt controller at this
3868	* point.
3869	*/
3870	if (fFlags & IEM_XCPT_FLAGS_T_EXT_INT)
3871	{
3872	Assert(!VMX_IDT_VECTORING_INFO_IS_VALID(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32RoIdtVectoringInfo));
3873	return iemVmxVmexitExtInt(pVCpu, uVector, false /* fIntPending */);
3874	}
3875
3876	/*
3877	* Evaluate intercepts for hardware exceptions, software exceptions (#BP, #OF),
3878	* and privileged software exceptions (#DB generated by INT1/ICEBP) and software
3879	* interrupts.
3880	*/
3881	Assert(fFlags & (IEM_XCPT_FLAGS_T_CPU_XCPT \| IEM_XCPT_FLAGS_T_SOFT_INT));
3882	bool fIntercept;
3883	if ( !(fFlags & IEM_XCPT_FLAGS_T_SOFT_INT)
3884	\|\| (fFlags & (IEM_XCPT_FLAGS_BP_INSTR \| IEM_XCPT_FLAGS_OF_INSTR \| IEM_XCPT_FLAGS_ICEBP_INSTR)))
3885	fIntercept = CPUMIsGuestVmxXcptInterceptSet(&pVCpu->cpum.GstCtx, uVector, uErrCode);
3886	else
3887	{
3888	/* Software interrupts cannot be intercepted and therefore do not cause a VM-exit. */
3889	fIntercept = false;
3890	}
3891
3892	/*
3893	* Now that we've determined whether the event causes a VM-exit, we need to construct the
3894	* relevant VM-exit information and cause the VM-exit.
3895	*/
3896	if (fIntercept)
3897	{
3898	Assert(!(fFlags & IEM_XCPT_FLAGS_T_EXT_INT));
3899
3900	/* Construct the rest of the event related information fields and cause the VM-exit. */
3901	uint64_t u64ExitQual;
3902	if (uVector == X86_XCPT_PF)
3903	{
3904	Assert(fFlags & IEM_XCPT_FLAGS_CR2);
3905	u64ExitQual = uCr2;
3906	}
3907	else if (uVector == X86_XCPT_DB)
3908	{
3909	IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_DR6);
3910	u64ExitQual = pVCpu->cpum.GstCtx.dr[6] & VMX_VMCS_EXIT_QUAL_VALID_MASK;
3911	}
3912	else
3913	u64ExitQual = 0;
3914
3915	uint8_t const fNmiUnblocking = pVCpu->cpum.GstCtx.hwvirt.vmx.fNmiUnblockingIret;
3916	bool const fErrCodeValid = RT_BOOL(fFlags & IEM_XCPT_FLAGS_ERR);
3917	uint8_t const uIntInfoType = iemVmxGetEventType(uVector, fFlags);
3918	uint32_t const uExitIntInfo = RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VECTOR, uVector)
3919	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_TYPE, uIntInfoType)
3920	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_ERR_CODE_VALID, fErrCodeValid)
3921	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_NMI_UNBLOCK_IRET, fNmiUnblocking)
3922	\| RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VALID, 1);
3923	iemVmxVmcsSetExitIntInfo(pVCpu, uExitIntInfo);
3924	iemVmxVmcsSetExitIntErrCode(pVCpu, uErrCode);
3925
3926	/*
3927	* For VM-exits due to software exceptions (those generated by INT3 or INTO) or privileged
3928	* software exceptions (those generated by INT1/ICEBP) we need to supply the VM-exit instruction
3929	* length.
3930	*/
3931	if ( (fFlags & IEM_XCPT_FLAGS_T_SOFT_INT)
3932	\|\| (fFlags & (IEM_XCPT_FLAGS_BP_INSTR \| IEM_XCPT_FLAGS_OF_INSTR \| IEM_XCPT_FLAGS_ICEBP_INSTR)))
3933	iemVmxVmcsSetExitInstrLen(pVCpu, cbInstr);
3934	else
3935	iemVmxVmcsSetExitInstrLen(pVCpu, 0);
3936
3937	return iemVmxVmexit(pVCpu, VMX_EXIT_XCPT_OR_NMI, u64ExitQual);
3938	}
3939
3940	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
3941	}
3942
3943
3944	/**
3945	* VMX VM-exit handler for EPT misconfiguration.
3946	*
3947	* @param pVCpu The cross context virtual CPU structure.
3948	* @param GCPhysAddr The physical address causing the EPT misconfiguration.
3949	* This need not be page aligned (e.g. nested-guest in real
3950	* mode).
3951	*/
3952	static VBOXSTRICTRC iemVmxVmexitEptMisconfig(PVMCPUCC pVCpu, RTGCPHYS GCPhysAddr) RT_NOEXCEPT
3953	{
3954	iemVmxVmcsSetExitGuestPhysAddr(pVCpu, GCPhysAddr);
3955	return iemVmxVmexit(pVCpu, VMX_EXIT_EPT_MISCONFIG, 0 /* u64ExitQual */);
3956	}
3957
3958
3959	/**
3960	* VMX VM-exit handler for EPT misconfiguration.
3961	*
3962	* This is intended for EPT misconfigurations where the caller provides all the
3963	* relevant VM-exit information.
3964	*
3965	* @param pVCpu The cross context virtual CPU structure.
3966	* @param GCPhysAddr The physical address causing the EPT misconfiguration.
3967	* This need not be page aligned (e.g. nested-guest in real
3968	* mode).
3969	* @param pExitEventInfo Pointer to the VM-exit event information.
3970	*/
3971	static VBOXSTRICTRC iemVmxVmexitEptMisconfigWithInfo(PVMCPUCC pVCpu, RTGCPHYS GCPhysAddr, PCVMXVEXITEVENTINFO pExitEventInfo) RT_NOEXCEPT
3972	{
3973	Assert(pExitEventInfo);
3974	Assert(!VMX_EXIT_INT_INFO_IS_VALID(pExitEventInfo->uExitIntInfo));
3975	iemVmxVmcsSetIdtVectoringInfo(pVCpu, pExitEventInfo->uIdtVectoringInfo);
3976	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, pExitEventInfo->uIdtVectoringErrCode);
3977	iemVmxVmcsSetExitGuestPhysAddr(pVCpu, GCPhysAddr);
3978	return iemVmxVmexit(pVCpu, VMX_EXIT_EPT_MISCONFIG, 0 /* u64ExitQual */);
3979	}
3980
3981
3982	/**
3983	* Interface for HM and EM to emulate a VM-exit due to an EPT misconfiguration.
3984	*
3985	* @returns Strict VBox status code.
3986	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3987	* @param GCPhysAddr The nested-guest physical address causing the EPT
3988	* misconfiguration.
3989	* @param pExitEventInfo Pointer to the VM-exit event information.
3990	* @thread EMT(pVCpu)
3991	*/
3992	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitEptMisconfig(PVMCPUCC pVCpu, RTGCPHYS GCPhysAddr, PCVMXVEXITEVENTINFO pExitEventInfo)
3993	{
3994	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
3995
3996	iemInitExec(pVCpu, 0 /fExecOpts/);
3997	VBOXSTRICTRC rcStrict = iemVmxVmexitEptMisconfigWithInfo(pVCpu, GCPhysAddr, pExitEventInfo);
3998	Assert(!pVCpu->iem.s.cActiveMappings);
3999	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
4000	}
4001
4002
4003	/**
4004	* VMX VM-exit handler for EPT violation.
4005	*
4006	* @param pVCpu The cross context virtual CPU structure.
4007	* @param fAccess The access causing the EPT violation, IEM_ACCESS_XXX.
4008	* @param fSlatFail The SLAT failure info, IEM_SLAT_FAIL_XXX.
4009	* @param fEptAccess The EPT paging structure bits.
4010	* @param GCPhysAddr The physical address causing the EPT violation. This
4011	* need not be page aligned (e.g. nested-guest in real
4012	* mode).
4013	* @param fIsLinearAddrValid Whether translation of a linear address caused this
4014	* EPT violation. If @c false, GCPtrAddr must be 0.
4015	* @param GCPtrAddr The linear address causing the EPT violation.
4016	* @param cbInstr The VM-exit instruction length.
4017	*/
4018	static VBOXSTRICTRC iemVmxVmexitEptViolation(PVMCPUCC pVCpu, uint32_t fAccess, uint32_t fSlatFail,
4019	uint64_t fEptAccess, RTGCPHYS GCPhysAddr, bool fIsLinearAddrValid,
4020	uint64_t GCPtrAddr, uint8_t cbInstr) RT_NOEXCEPT
4021	{
4022	/*
4023	* If the linear address isn't valid (can happen when loading PDPTEs
4024	* as part of MOV CR execution) the linear address field is undefined.
4025	* While we can leave it this way, it's preferable to zero it for consistency.
4026	*/
4027	Assert(fIsLinearAddrValid \|\| GCPtrAddr == 0);
4028
4029	uint64_t const fCaps = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64EptVpidCaps;
4030	bool const fSupportsAccessDirty = RT_BOOL(fCaps & MSR_IA32_VMX_EPT_VPID_CAP_ACCESS_DIRTY);
4031
4032	uint32_t const fDataRdMask = IEM_ACCESS_WHAT_MASK \| IEM_ACCESS_TYPE_READ;
4033	uint32_t const fDataWrMask = IEM_ACCESS_WHAT_MASK \| IEM_ACCESS_TYPE_WRITE;
4034	uint32_t const fInstrMask = IEM_ACCESS_WHAT_MASK \| IEM_ACCESS_TYPE_EXEC;
4035	bool const fDataRead = ((fAccess & fDataRdMask) == IEM_ACCESS_DATA_R) \| fSupportsAccessDirty;
4036	bool const fDataWrite = ((fAccess & fDataWrMask) == IEM_ACCESS_DATA_W) \| fSupportsAccessDirty;
4037	bool const fInstrFetch = ((fAccess & fInstrMask) == IEM_ACCESS_INSTRUCTION);
4038	bool const fEptRead = RT_BOOL(fEptAccess & EPT_E_READ);
4039	bool const fEptWrite = RT_BOOL(fEptAccess & EPT_E_WRITE);
4040	bool const fEptExec = RT_BOOL(fEptAccess & EPT_E_EXECUTE);
4041	bool const fNmiUnblocking = pVCpu->cpum.GstCtx.hwvirt.vmx.fNmiUnblockingIret;
4042	bool const fIsLinearToPhysAddr = fIsLinearAddrValid & RT_BOOL(fSlatFail & IEM_SLAT_FAIL_LINEAR_TO_PHYS_ADDR);
4043
4044	uint64_t const u64ExitQual = RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ACCESS_READ, fDataRead)
4045	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ACCESS_WRITE, fDataWrite)
4046	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ACCESS_INSTR_FETCH, fInstrFetch)
4047	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ENTRY_READ, fEptRead)
4048	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ENTRY_WRITE, fEptWrite)
4049	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_ENTRY_EXECUTE, fEptExec)
4050	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_LINEAR_ADDR_VALID, fIsLinearAddrValid)
4051	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_LINEAR_TO_PHYS_ADDR, fIsLinearToPhysAddr)
4052	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_EPT_NMI_UNBLOCK_IRET, fNmiUnblocking);
4053
4054	#ifdef VBOX_STRICT
4055	uint64_t const fMiscCaps = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Misc;
4056	uint32_t const fProcCtls2 = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2;
4057	Assert(!(fCaps & MSR_IA32_VMX_EPT_VPID_CAP_ADVEXITINFO_EPT_VIOLATION)); /* Advanced VM-exit info. not supported */
4058	Assert(!(fCaps & MSR_IA32_VMX_EPT_VPID_CAP_SUPER_SHW_STACK)); /* Supervisor shadow stack control not supported. */
4059	Assert(!(RT_BF_GET(fMiscCaps, VMX_BF_MISC_INTEL_PT))); /* Intel PT not supported. */
4060	Assert(!(fProcCtls2 & VMX_PROC_CTLS2_MODE_BASED_EPT_PERM)); /* Mode-based execute control not supported. */
4061	#endif
4062
4063	iemVmxVmcsSetExitGuestPhysAddr(pVCpu, GCPhysAddr);
4064	iemVmxVmcsSetExitGuestLinearAddr(pVCpu, GCPtrAddr);
4065	iemVmxVmcsSetExitInstrLen(pVCpu, cbInstr);
4066
4067	return iemVmxVmexit(pVCpu, VMX_EXIT_EPT_VIOLATION, u64ExitQual);
4068	}
4069
4070
4071	/**
4072	* VMX VM-exit handler for EPT violation.
4073	*
4074	* This is intended for EPT violations where the caller provides all the
4075	* relevant VM-exit information.
4076	*
4077	* @returns VBox strict status code.
4078	* @param pVCpu The cross context virtual CPU structure.
4079	* @param pExitInfo Pointer to the VM-exit information.
4080	* @param pExitEventInfo Pointer to the VM-exit event information.
4081	*/
4082	static VBOXSTRICTRC iemVmxVmexitEptViolationWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo,
4083	PCVMXVEXITEVENTINFO pExitEventInfo) RT_NOEXCEPT
4084	{
4085	Assert(pExitInfo);
4086	Assert(pExitEventInfo);
4087	Assert(pExitInfo->uReason == VMX_EXIT_EPT_VIOLATION);
4088	Assert(!VMX_EXIT_INT_INFO_IS_VALID(pExitEventInfo->uExitIntInfo));
4089
4090	iemVmxVmcsSetIdtVectoringInfo(pVCpu, pExitEventInfo->uIdtVectoringInfo);
4091	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, pExitEventInfo->uIdtVectoringErrCode);
4092
4093	iemVmxVmcsSetExitGuestPhysAddr(pVCpu, pExitInfo->u64GuestPhysAddr);
4094	if (pExitInfo->u64Qual & VMX_BF_EXIT_QUAL_EPT_LINEAR_ADDR_VALID_MASK)
4095	iemVmxVmcsSetExitGuestLinearAddr(pVCpu, pExitInfo->u64GuestLinearAddr);
4096	else
4097	iemVmxVmcsSetExitGuestLinearAddr(pVCpu, 0);
4098	iemVmxVmcsSetExitInstrLen(pVCpu, pExitInfo->cbInstr);
4099	return iemVmxVmexit(pVCpu, VMX_EXIT_EPT_VIOLATION, pExitInfo->u64Qual);
4100	}
4101
4102
4103	/**
4104	* Interface for HM and EM to emulate a VM-exit due to an EPT violation.
4105	*
4106	* @returns Strict VBox status code.
4107	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4108	* @param pExitInfo Pointer to the VM-exit information.
4109	* @param pExitEventInfo Pointer to the VM-exit event information.
4110	* @thread EMT(pVCpu)
4111	*/
4112	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitEptViolation(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo,
4113	PCVMXVEXITEVENTINFO pExitEventInfo)
4114	{
4115	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
4116
4117	iemInitExec(pVCpu, 0 /fExecOpts/);
4118	VBOXSTRICTRC rcStrict = iemVmxVmexitEptViolationWithInfo(pVCpu, pExitInfo, pExitEventInfo);
4119	Assert(!pVCpu->iem.s.cActiveMappings);
4120	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
4121	}
4122
4123
4124	/**
4125	* VMX VM-exit handler for EPT-induced VM-exits.
4126	*
4127	* @param pVCpu The cross context virtual CPU structure.
4128	* @param pWalk The page walk info.
4129	* @param fAccess The access causing the EPT event, IEM_ACCESS_XXX.
4130	* @param fSlatFail Additional SLAT info, IEM_SLAT_FAIL_XXX.
4131	* @param cbInstr The VM-exit instruction length if applicable. Pass 0 if not
4132	* applicable.
4133	*/
4134	VBOXSTRICTRC iemVmxVmexitEpt(PVMCPUCC pVCpu, PPGMPTWALK pWalk, uint32_t fAccess, uint32_t fSlatFail, uint8_t cbInstr) RT_NOEXCEPT
4135	{
4136	Assert(pWalk->fIsSlat);
4137	Assert(pWalk->fFailed & PGM_WALKFAIL_EPT);
4138	Assert(!IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxEptXcptVe); /* #VE exceptions not supported. */
4139	Assert(!(pWalk->fFailed & PGM_WALKFAIL_EPT_VIOLATION_CONVERTIBLE)); /* Without #VE, convertible violations not possible. */
4140
4141	if (pWalk->fFailed & PGM_WALKFAIL_EPT_VIOLATION)
4142	{
4143	LogFlow(("EptViolation: cs:rip=%04x:%08RX64 fAccess=%#RX32\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, fAccess));
4144	uint64_t const fEptAccess = (pWalk->fEffective & PGM_PTATTRS_EPT_MASK) >> PGM_PTATTRS_EPT_SHIFT;
4145	return iemVmxVmexitEptViolation(pVCpu, fAccess, fSlatFail, fEptAccess, pWalk->GCPhysNested, pWalk->fIsLinearAddrValid,
4146	pWalk->GCPtr, cbInstr);
4147	}
4148
4149	LogFlow(("EptMisconfig: cs:rip=%04x:%08RX64 fAccess=%#RX32\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, fAccess));
4150	Assert(pWalk->fFailed & PGM_WALKFAIL_EPT_MISCONFIG);
4151	return iemVmxVmexitEptMisconfig(pVCpu, pWalk->GCPhysNested);
4152	}
4153
4154
4155	/**
4156	* VMX VM-exit handler for APIC accesses.
4157	*
4158	* @param pVCpu The cross context virtual CPU structure.
4159	* @param offAccess The offset of the register being accessed.
4160	* @param fAccess The type of access, see IEM_ACCESS_XXX.
4161	*/
4162	static VBOXSTRICTRC iemVmxVmexitApicAccess(PVMCPUCC pVCpu, uint16_t offAccess, uint32_t fAccess) RT_NOEXCEPT
4163	{
4164	VMXAPICACCESS enmAccess;
4165	bool const fInEventDelivery = IEMGetCurrentXcpt(pVCpu, NULL, NULL, NULL, NULL);
4166	if (fInEventDelivery)
4167	enmAccess = VMXAPICACCESS_LINEAR_EVENT_DELIVERY;
4168	else if ((fAccess & (IEM_ACCESS_WHAT_MASK \| IEM_ACCESS_TYPE_MASK)) == IEM_ACCESS_INSTRUCTION)
4169	enmAccess = VMXAPICACCESS_LINEAR_INSTR_FETCH;
4170	else if (fAccess & IEM_ACCESS_TYPE_WRITE)
4171	enmAccess = VMXAPICACCESS_LINEAR_WRITE;
4172	else
4173	enmAccess = VMXAPICACCESS_LINEAR_READ;
4174
4175	uint64_t const u64ExitQual = RT_BF_MAKE(VMX_BF_EXIT_QUAL_APIC_ACCESS_OFFSET, offAccess)
4176	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_APIC_ACCESS_TYPE, enmAccess);
4177	return iemVmxVmexit(pVCpu, VMX_EXIT_APIC_ACCESS, u64ExitQual);
4178	}
4179
4180
4181	/**
4182	* VMX VM-exit handler for APIC accesses.
4183	*
4184	* This is intended for APIC accesses where the caller provides all the
4185	* relevant VM-exit information.
4186	*
4187	* @returns VBox strict status code.
4188	* @param pVCpu The cross context virtual CPU structure.
4189	* @param pExitInfo Pointer to the VM-exit information.
4190	* @param pExitEventInfo Pointer to the VM-exit event information.
4191	*/
4192	static VBOXSTRICTRC iemVmxVmexitApicAccessWithInfo(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo,
4193	PCVMXVEXITEVENTINFO pExitEventInfo) RT_NOEXCEPT
4194	{
4195	/* VM-exit interruption information should not be valid for APIC-access VM-exits. */
4196	Assert(!VMX_EXIT_INT_INFO_IS_VALID(pExitEventInfo->uExitIntInfo));
4197	Assert(pExitInfo->uReason == VMX_EXIT_APIC_ACCESS);
4198	iemVmxVmcsSetExitIntInfo(pVCpu, 0);
4199	iemVmxVmcsSetExitIntErrCode(pVCpu, 0);
4200	iemVmxVmcsSetExitInstrLen(pVCpu, pExitInfo->cbInstr);
4201	iemVmxVmcsSetIdtVectoringInfo(pVCpu, pExitEventInfo->uIdtVectoringInfo);
4202	iemVmxVmcsSetIdtVectoringErrCode(pVCpu, pExitEventInfo->uIdtVectoringErrCode);
4203	return iemVmxVmexit(pVCpu, VMX_EXIT_APIC_ACCESS, pExitInfo->u64Qual);
4204	}
4205
4206
4207	/**
4208	* Interface for HM and EM to virtualize memory-mapped APIC accesses.
4209	*
4210	* @returns Strict VBox status code.
4211	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the memory access was virtualized.
4212	* @retval VINF_VMX_VMEXIT if the access causes a VM-exit.
4213	*
4214	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4215	* @param pExitInfo Pointer to the VM-exit information.
4216	* @param pExitEventInfo Pointer to the VM-exit event information.
4217	* @thread EMT(pVCpu)
4218	*/
4219	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitApicAccess(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo, PCVMXVEXITEVENTINFO pExitEventInfo)
4220	{
4221	Assert(pExitInfo);
4222	Assert(pExitEventInfo);
4223	VBOXSTRICTRC rcStrict = iemVmxVmexitApicAccessWithInfo(pVCpu, pExitInfo, pExitEventInfo);
4224	Assert(!pVCpu->iem.s.cActiveMappings);
4225	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
4226	}
4227
4228
4229	/**
4230	* VMX VM-exit handler for APIC-write VM-exits.
4231	*
4232	* @param pVCpu The cross context virtual CPU structure.
4233	* @param offApic The write to the virtual-APIC page offset that caused this
4234	* VM-exit.
4235	*/
4236	static VBOXSTRICTRC iemVmxVmexitApicWrite(PVMCPUCC pVCpu, uint16_t offApic) RT_NOEXCEPT
4237	{
4238	Assert(offApic < XAPIC_OFF_END + 4);
4239	/* Write only bits 11:0 of the APIC offset into the Exit qualification field. */
4240	offApic &= UINT16_C(0xfff);
4241	return iemVmxVmexit(pVCpu, VMX_EXIT_APIC_WRITE, offApic);
4242	}
4243
4244
4245	/**
4246	* Clears any pending virtual-APIC write emulation.
4247	*
4248	* @returns The virtual-APIC offset that was written before clearing it.
4249	* @param pVCpu The cross context virtual CPU structure.
4250	*/
4251	DECLINLINE(uint16_t) iemVmxVirtApicClearPendingWrite(PVMCPUCC pVCpu)
4252	{
4253	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_HWVIRT);
4254	uint8_t const offVirtApicWrite = pVCpu->cpum.GstCtx.hwvirt.vmx.offVirtApicWrite;
4255	pVCpu->cpum.GstCtx.hwvirt.vmx.offVirtApicWrite = 0;
4256	Assert(VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_APIC_WRITE));
4257	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_VMX_APIC_WRITE);
4258	return offVirtApicWrite;
4259	}
4260
4261
4262	/**
4263	* Reads a 32-bit register from the virtual-APIC page at the given offset.
4264	*
4265	* @returns The register from the virtual-APIC page.
4266	* @param pVCpu The cross context virtual CPU structure.
4267	* @param offReg The offset of the register being read.
4268	*/
4269	uint32_t iemVmxVirtApicReadRaw32(PVMCPUCC pVCpu, uint16_t offReg) RT_NOEXCEPT
4270	{
4271	Assert(offReg <= VMX_V_VIRT_APIC_SIZE - sizeof(uint32_t));
4272
4273	uint32_t uReg = 0;
4274	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4275	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &uReg, GCPhysVirtApic + offReg, sizeof(uReg));
4276	AssertMsgStmt(RT_SUCCESS(rc),
4277	("Failed to read %u bytes at offset %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4278	sizeof(uReg), offReg, GCPhysVirtApic, rc),
4279	uReg = 0);
4280	return uReg;
4281	}
4282
4283
4284	/**
4285	* Reads a 64-bit register from the virtual-APIC page at the given offset.
4286	*
4287	* @returns The register from the virtual-APIC page.
4288	* @param pVCpu The cross context virtual CPU structure.
4289	* @param offReg The offset of the register being read.
4290	*/
4291	static uint64_t iemVmxVirtApicReadRaw64(PVMCPUCC pVCpu, uint16_t offReg) RT_NOEXCEPT
4292	{
4293	Assert(offReg <= VMX_V_VIRT_APIC_SIZE - sizeof(uint64_t));
4294
4295	uint64_t uReg = 0;
4296	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4297	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &uReg, GCPhysVirtApic + offReg, sizeof(uReg));
4298	AssertMsgStmt(RT_SUCCESS(rc),
4299	("Failed to read %u bytes at offset %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4300	sizeof(uReg), offReg, GCPhysVirtApic, rc),
4301	uReg = 0);
4302	return uReg;
4303	}
4304
4305
4306	/**
4307	* Writes a 32-bit register to the virtual-APIC page at the given offset.
4308	*
4309	* @param pVCpu The cross context virtual CPU structure.
4310	* @param offReg The offset of the register being written.
4311	* @param uReg The register value to write.
4312	*/
4313	void iemVmxVirtApicWriteRaw32(PVMCPUCC pVCpu, uint16_t offReg, uint32_t uReg) RT_NOEXCEPT
4314	{
4315	Assert(offReg <= VMX_V_VIRT_APIC_SIZE - sizeof(uint32_t));
4316
4317	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4318	int rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVirtApic + offReg, &uReg, sizeof(uReg));
4319	AssertMsgRC(rc, ("Failed to write %u bytes at offset %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4320	sizeof(uReg), offReg, GCPhysVirtApic, rc));
4321	}
4322
4323
4324	/**
4325	* Writes a 64-bit register to the virtual-APIC page at the given offset.
4326	*
4327	* @param pVCpu The cross context virtual CPU structure.
4328	* @param offReg The offset of the register being written.
4329	* @param uReg The register value to write.
4330	*/
4331	static void iemVmxVirtApicWriteRaw64(PVMCPUCC pVCpu, uint16_t offReg, uint64_t uReg) RT_NOEXCEPT
4332	{
4333	Assert(offReg <= VMX_V_VIRT_APIC_SIZE - sizeof(uint64_t));
4334
4335	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4336	int rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVirtApic + offReg, &uReg, sizeof(uReg));
4337	AssertMsgRC(rc, ("Failed to write %u bytes at offset %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4338	sizeof(uReg), offReg, GCPhysVirtApic, rc));
4339	}
4340
4341
4342	/**
4343	* Sets the vector in a virtual-APIC 256-bit sparse register.
4344	*
4345	* @param pVCpu The cross context virtual CPU structure.
4346	* @param offReg The offset of the 256-bit spare register.
4347	* @param uVector The vector to set.
4348	*
4349	* @remarks This is based on our APIC device code.
4350	*/
4351	static void iemVmxVirtApicSetVectorInReg(PVMCPUCC pVCpu, uint16_t offReg, uint8_t uVector) RT_NOEXCEPT
4352	{
4353	/* Determine the vector offset within the chunk. */
4354	uint16_t const offVector = (uVector & UINT32_C(0xe0)) >> 1;
4355
4356	/* Read the chunk at the offset. */
4357	uint32_t uReg;
4358	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4359	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &uReg, GCPhysVirtApic + offReg + offVector, sizeof(uReg));
4360	if (RT_SUCCESS(rc))
4361	{
4362	/* Modify the chunk. */
4363	uint16_t const idxVectorBit = uVector & UINT32_C(0x1f);
4364	uReg \|= RT_BIT(idxVectorBit);
4365
4366	/* Write the chunk. */
4367	rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVirtApic + offReg + offVector, &uReg, sizeof(uReg));
4368	AssertMsgRC(rc, ("Failed to set vector %#x in 256-bit register at %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4369	uVector, offReg, GCPhysVirtApic, rc));
4370	}
4371	else
4372	AssertMsgFailed(("Failed to get vector %#x in 256-bit register at %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4373	uVector, offReg, GCPhysVirtApic, rc));
4374	}
4375
4376
4377	/**
4378	* Clears the vector in a virtual-APIC 256-bit sparse register.
4379	*
4380	* @param pVCpu The cross context virtual CPU structure.
4381	* @param offReg The offset of the 256-bit spare register.
4382	* @param uVector The vector to clear.
4383	*
4384	* @remarks This is based on our APIC device code.
4385	*/
4386	static void iemVmxVirtApicClearVectorInReg(PVMCPUCC pVCpu, uint16_t offReg, uint8_t uVector) RT_NOEXCEPT
4387	{
4388	/* Determine the vector offset within the chunk. */
4389	uint16_t const offVector = (uVector & UINT32_C(0xe0)) >> 1;
4390
4391	/* Read the chunk at the offset. */
4392	uint32_t uReg;
4393	RTGCPHYS const GCPhysVirtApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrVirtApic.u;
4394	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &uReg, GCPhysVirtApic + offReg + offVector, sizeof(uReg));
4395	if (RT_SUCCESS(rc))
4396	{
4397	/* Modify the chunk. */
4398	uint16_t const idxVectorBit = uVector & UINT32_C(0x1f);
4399	uReg &= ~RT_BIT(idxVectorBit);
4400
4401	/* Write the chunk. */
4402	rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVirtApic + offReg + offVector, &uReg, sizeof(uReg));
4403	AssertMsgRC(rc, ("Failed to clear vector %#x in 256-bit register at %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4404	uVector, offReg, GCPhysVirtApic, rc));
4405	}
4406	else
4407	AssertMsgFailed(("Failed to get vector %#x in 256-bit register at %#x of the virtual-APIC page at %#RGp: %Rrc\n",
4408	uVector, offReg, GCPhysVirtApic, rc));
4409	}
4410
4411
4412	/**
4413	* Checks if a memory access to the APIC-access page must causes an APIC-access
4414	* VM-exit.
4415	*
4416	* @param pVCpu The cross context virtual CPU structure.
4417	* @param offAccess The offset of the register being accessed.
4418	* @param cbAccess The size of the access in bytes.
4419	* @param fAccess The type of access, see IEM_ACCESS_XXX.
4420	*
4421	* @remarks This must not be used for MSR-based APIC-access page accesses!
4422	* @sa iemVmxVirtApicAccessMsrWrite, iemVmxVirtApicAccessMsrRead.
4423	*/
4424	static bool iemVmxVirtApicIsMemAccessIntercepted(PVMCPUCC pVCpu, uint16_t offAccess, size_t cbAccess, uint32_t fAccess) RT_NOEXCEPT
4425	{
4426	Assert(cbAccess > 0);
4427	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
4428
4429	/*
4430	* We must cause a VM-exit if any of the following are true:
4431	* - TPR shadowing isn't active.
4432	* - The access size exceeds 32-bits.
4433	* - The access is not contained within low 4 bytes of a 16-byte aligned offset.
4434	*
4435	* See Intel spec. 29.4.2 "Virtualizing Reads from the APIC-Access Page".
4436	* See Intel spec. 29.4.3.1 "Determining Whether a Write Access is Virtualized".
4437	*/
4438	if ( !(pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
4439	\|\| cbAccess > sizeof(uint32_t)
4440	\|\| ((offAccess + cbAccess - 1) & 0xc)
4441	\|\| offAccess >= XAPIC_OFF_END + 4)
4442	return true;
4443
4444	/*
4445	* If the access is part of an operation where we have already
4446	* virtualized a virtual-APIC write, we must cause a VM-exit.
4447	*/
4448	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_APIC_WRITE))
4449	return true;
4450
4451	/*
4452	* Check write accesses to the APIC-access page that cause VM-exits.
4453	*/
4454	if (fAccess & IEM_ACCESS_TYPE_WRITE)
4455	{
4456	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_APIC_REG_VIRT)
4457	{
4458	/*
4459	* With APIC-register virtualization, a write access to any of the
4460	* following registers are virtualized. Accessing any other register
4461	* causes a VM-exit.
4462	*/
4463	uint16_t const offAlignedAccess = offAccess & 0xfffc;
4464	switch (offAlignedAccess)
4465	{
4466	case XAPIC_OFF_ID:
4467	case XAPIC_OFF_TPR:
4468	case XAPIC_OFF_EOI:
4469	case XAPIC_OFF_LDR:
4470	case XAPIC_OFF_DFR:
4471	case XAPIC_OFF_SVR:
4472	case XAPIC_OFF_ESR:
4473	case XAPIC_OFF_ICR_LO:
4474	case XAPIC_OFF_ICR_HI:
4475	case XAPIC_OFF_LVT_TIMER:
4476	case XAPIC_OFF_LVT_THERMAL:
4477	case XAPIC_OFF_LVT_PERF:
4478	case XAPIC_OFF_LVT_LINT0:
4479	case XAPIC_OFF_LVT_LINT1:
4480	case XAPIC_OFF_LVT_ERROR:
4481	case XAPIC_OFF_TIMER_ICR:
4482	case XAPIC_OFF_TIMER_DCR:
4483	break;
4484	default:
4485	return true;
4486	}
4487	}
4488	else if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY)
4489	{
4490	/*
4491	* With virtual-interrupt delivery, a write access to any of the
4492	* following registers are virtualized. Accessing any other register
4493	* causes a VM-exit.
4494	*
4495	* Note! The specification does not allow writing to offsets in-between
4496	* these registers (e.g. TPR + 1 byte) unlike read accesses.
4497	*/
4498	switch (offAccess)
4499	{
4500	case XAPIC_OFF_TPR:
4501	case XAPIC_OFF_EOI:
4502	case XAPIC_OFF_ICR_LO:
4503	break;
4504	default:
4505	return true;
4506	}
4507	}
4508	else
4509	{
4510	/*
4511	* Without APIC-register virtualization or virtual-interrupt delivery,
4512	* only TPR accesses are virtualized.
4513	*/
4514	if (offAccess == XAPIC_OFF_TPR)
4515	{ /* likely */ }
4516	else
4517	return true;
4518	}
4519	}
4520	else
4521	{
4522	/*
4523	* Check read accesses to the APIC-access page that cause VM-exits.
4524	*/
4525	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_APIC_REG_VIRT)
4526	{
4527	/*
4528	* With APIC-register virtualization, a read access to any of the
4529	* following registers are virtualized. Accessing any other register
4530	* causes a VM-exit.
4531	*/
4532	uint16_t const offAlignedAccess = offAccess & 0xfffc;
4533	switch (offAlignedAccess)
4534	{
4535	/** @todo r=ramshankar: What about XAPIC_OFF_LVT_CMCI? */
4536	case XAPIC_OFF_ID:
4537	case XAPIC_OFF_VERSION:
4538	case XAPIC_OFF_TPR:
4539	case XAPIC_OFF_EOI:
4540	case XAPIC_OFF_LDR:
4541	case XAPIC_OFF_DFR:
4542	case XAPIC_OFF_SVR:
4543	case XAPIC_OFF_ISR0: case XAPIC_OFF_ISR1: case XAPIC_OFF_ISR2: case XAPIC_OFF_ISR3:
4544	case XAPIC_OFF_ISR4: case XAPIC_OFF_ISR5: case XAPIC_OFF_ISR6: case XAPIC_OFF_ISR7:
4545	case XAPIC_OFF_TMR0: case XAPIC_OFF_TMR1: case XAPIC_OFF_TMR2: case XAPIC_OFF_TMR3:
4546	case XAPIC_OFF_TMR4: case XAPIC_OFF_TMR5: case XAPIC_OFF_TMR6: case XAPIC_OFF_TMR7:
4547	case XAPIC_OFF_IRR0: case XAPIC_OFF_IRR1: case XAPIC_OFF_IRR2: case XAPIC_OFF_IRR3:
4548	case XAPIC_OFF_IRR4: case XAPIC_OFF_IRR5: case XAPIC_OFF_IRR6: case XAPIC_OFF_IRR7:
4549	case XAPIC_OFF_ESR:
4550	case XAPIC_OFF_ICR_LO:
4551	case XAPIC_OFF_ICR_HI:
4552	case XAPIC_OFF_LVT_TIMER:
4553	case XAPIC_OFF_LVT_THERMAL:
4554	case XAPIC_OFF_LVT_PERF:
4555	case XAPIC_OFF_LVT_LINT0:
4556	case XAPIC_OFF_LVT_LINT1:
4557	case XAPIC_OFF_LVT_ERROR:
4558	case XAPIC_OFF_TIMER_ICR:
4559	case XAPIC_OFF_TIMER_DCR:
4560	break;
4561	default:
4562	return true;
4563	}
4564	}
4565	else
4566	{
4567	/* Without APIC-register virtualization, only TPR accesses are virtualized. */
4568	if (offAccess == XAPIC_OFF_TPR)
4569	{ /* likely */ }
4570	else
4571	return true;
4572	}
4573	}
4574
4575	/* The APIC access is virtualized, does not cause a VM-exit. */
4576	return false;
4577	}
4578
4579
4580	/**
4581	* Virtualizes a memory-based APIC access by certain instructions even though they
4582	* do not use the address to access memory.
4583	*
4584	* This is for instructions like MONITOR, CLFLUSH, CLFLUSHOPT, ENTER which may cause
4585	* page-faults but do not use the address to access memory.
4586	*
4587	* @param pVCpu The cross context virtual CPU structure.
4588	* @param pGCPhysAccess Pointer to the guest-physical address accessed.
4589	* @param cbAccess The size of the access in bytes.
4590	* @param fAccess The type of access, see IEM_ACCESS_XXX.
4591	*/
4592	VBOXSTRICTRC iemVmxVirtApicAccessUnused(PVMCPUCC pVCpu, PRTGCPHYS pGCPhysAccess, size_t cbAccess, uint32_t fAccess) RT_NOEXCEPT
4593	{
4594	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS);
4595	Assert(pGCPhysAccess);
4596
4597	RTGCPHYS const GCPhysAccess = *pGCPhysAccess & ~(RTGCPHYS)GUEST_PAGE_OFFSET_MASK;
4598	RTGCPHYS const GCPhysApic = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u64AddrApicAccess.u;
4599	Assert(!(GCPhysApic & GUEST_PAGE_OFFSET_MASK));
4600
4601	if (GCPhysAccess == GCPhysApic)
4602	{
4603	uint16_t const offAccess = *pGCPhysAccess & GUEST_PAGE_OFFSET_MASK;
4604	bool const fIntercept = iemVmxVirtApicIsMemAccessIntercepted(pVCpu, offAccess, cbAccess, fAccess);
4605	if (fIntercept)
4606	return iemVmxVmexitApicAccess(pVCpu, offAccess, fAccess);
4607
4608	*pGCPhysAccess = GCPhysApic \| offAccess;
4609	return VINF_VMX_MODIFIES_BEHAVIOR;
4610	}
4611
4612	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
4613	}
4614
4615
4616	/**
4617	* Virtualizes a memory-based APIC access.
4618	*
4619	* @returns VBox strict status code.
4620	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the access was virtualized.
4621	* @retval VINF_VMX_VMEXIT if the access causes a VM-exit.
4622	*
4623	* @param pVCpu The cross context virtual CPU structure.
4624	* @param offAccess The offset of the register being accessed (within the
4625	* APIC-access page).
4626	* @param cbAccess The size of the access in bytes.
4627	* @param pvData Pointer to the data being written or where to store the data
4628	* being read.
4629	* @param fAccess The type of access, see IEM_ACCESS_XXX.
4630	*/
4631	static VBOXSTRICTRC iemVmxVirtApicAccessMem(PVMCPUCC pVCpu, uint16_t offAccess, size_t cbAccess,
4632	void *pvData, uint32_t fAccess) RT_NOEXCEPT
4633	{
4634	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS);
4635	Assert(pvData);
4636
4637	bool const fIntercept = iemVmxVirtApicIsMemAccessIntercepted(pVCpu, offAccess, cbAccess, fAccess);
4638	if (fIntercept)
4639	return iemVmxVmexitApicAccess(pVCpu, offAccess, fAccess);
4640
4641	if (fAccess & IEM_ACCESS_TYPE_WRITE)
4642	{
4643	/*
4644	* A write access to the APIC-access page that is virtualized (rather than
4645	* causing a VM-exit) writes data to the virtual-APIC page.
4646	*/
4647	uint32_t const u32Data = (uint32_t )pvData;
4648	iemVmxVirtApicWriteRaw32(pVCpu, offAccess, u32Data);
4649
4650	/*
4651	* Record the currently updated APIC offset, as we need this later for figuring
4652	* out whether to perform TPR, EOI or self-IPI virtualization as well as well
4653	* as for supplying the exit qualification when causing an APIC-write VM-exit.
4654	*
4655	* After completion of the current operation, we need to perform TPR virtualization,
4656	* EOI virtualization or APIC-write VM-exit depending on which register was written.
4657	*
4658	* The current operation may be a REP-prefixed string instruction, execution of any
4659	* other instruction, or delivery of an event through the IDT.
4660	*
4661	* Thus things like clearing bytes 3:1 of the VTPR, clearing VEOI are not to be
4662	* performed now but later after completion of the current operation.
4663	*
4664	* See Intel spec. 29.4.3.2 "APIC-Write Emulation".
4665	*/
4666	iemVmxVirtApicSetPendingWrite(pVCpu, offAccess);
4667
4668	LogFlowFunc(("Write access at offset %#x not intercepted -> Wrote %#RX32\n", offAccess, u32Data));
4669	}
4670	else
4671	{
4672	/*
4673	* A read access from the APIC-access page that is virtualized (rather than
4674	* causing a VM-exit) returns data from the virtual-APIC page.
4675	*
4676	* See Intel spec. 29.4.2 "Virtualizing Reads from the APIC-Access Page".
4677	*/
4678	Assert(fAccess & IEM_ACCESS_TYPE_READ);
4679
4680	Assert(cbAccess <= 4);
4681	Assert(offAccess < XAPIC_OFF_END + 4);
4682	static uint32_t const s_auAccessSizeMasks[] = { 0, 0xff, 0xffff, 0xffffff, 0xffffffff };
4683
4684	uint32_t u32Data = iemVmxVirtApicReadRaw32(pVCpu, offAccess);
4685	u32Data &= s_auAccessSizeMasks[cbAccess];
4686	(uint32_t )pvData = u32Data;
4687
4688	LogFlowFunc(("Read access at offset %#x not intercepted -> Read %#RX32\n", offAccess, u32Data));
4689	}
4690
4691	return VINF_VMX_MODIFIES_BEHAVIOR;
4692	}
4693
4694
4695	/**
4696	* Virtualizes an MSR-based APIC read access.
4697	*
4698	* @returns VBox strict status code.
4699	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the MSR read was virtualized.
4700	* @retval VINF_VMX_INTERCEPT_NOT_ACTIVE if the MSR read access must be
4701	* handled by the x2APIC device.
4702	* @retval VERR_OUT_RANGE if the MSR read was supposed to be virtualized but was
4703	* not within the range of valid MSRs, caller must raise \#GP(0).
4704	* @param pVCpu The cross context virtual CPU structure.
4705	* @param idMsr The x2APIC MSR being read.
4706	* @param pu64Value Where to store the read x2APIC MSR value (only valid when
4707	* VINF_VMX_MODIFIES_BEHAVIOR is returned).
4708	*/
4709	static VBOXSTRICTRC iemVmxVirtApicAccessMsrRead(PVMCPUCC pVCpu, uint32_t idMsr, uint64_t *pu64Value) RT_NOEXCEPT
4710	{
4711	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_X2APIC_MODE);
4712	Assert(pu64Value);
4713
4714	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_APIC_REG_VIRT)
4715	{
4716	if ( idMsr >= MSR_IA32_X2APIC_START
4717	&& idMsr <= MSR_IA32_X2APIC_END)
4718	{
4719	uint16_t const offReg = (idMsr & 0xff) << 4;
4720	uint64_t const u64Value = iemVmxVirtApicReadRaw64(pVCpu, offReg);
4721	*pu64Value = u64Value;
4722	return VINF_VMX_MODIFIES_BEHAVIOR;
4723	}
4724	return VERR_OUT_OF_RANGE;
4725	}
4726
4727	if (idMsr == MSR_IA32_X2APIC_TPR)
4728	{
4729	uint16_t const offReg = (idMsr & 0xff) << 4;
4730	uint64_t const u64Value = iemVmxVirtApicReadRaw64(pVCpu, offReg);
4731	*pu64Value = u64Value;
4732	return VINF_VMX_MODIFIES_BEHAVIOR;
4733	}
4734
4735	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
4736	}
4737
4738
4739	/**
4740	* Virtualizes an MSR-based APIC write access.
4741	*
4742	* @returns VBox strict status code.
4743	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the MSR write was virtualized.
4744	* @retval VERR_OUT_RANGE if the MSR read was supposed to be virtualized but was
4745	* not within the range of valid MSRs, caller must raise \#GP(0).
4746	* @retval VINF_VMX_INTERCEPT_NOT_ACTIVE if the MSR must be written normally.
4747	*
4748	* @param pVCpu The cross context virtual CPU structure.
4749	* @param idMsr The x2APIC MSR being written.
4750	* @param u64Value The value of the x2APIC MSR being written.
4751	*/
4752	static VBOXSTRICTRC iemVmxVirtApicAccessMsrWrite(PVMCPUCC pVCpu, uint32_t idMsr, uint64_t u64Value) RT_NOEXCEPT
4753	{
4754	/*
4755	* Check if the access is to be virtualized.
4756	* See Intel spec. 29.5 "Virtualizing MSR-based APIC Accesses".
4757	*/
4758	if ( idMsr == MSR_IA32_X2APIC_TPR
4759	\|\| ( (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY)
4760	&& ( idMsr == MSR_IA32_X2APIC_EOI
4761	\|\| idMsr == MSR_IA32_X2APIC_SELF_IPI)))
4762	{
4763	/* Validate the MSR write depending on the register. */
4764	switch (idMsr)
4765	{
4766	case MSR_IA32_X2APIC_TPR:
4767	case MSR_IA32_X2APIC_SELF_IPI:
4768	{
4769	if (u64Value & UINT64_C(0xffffffffffffff00))
4770	return VERR_OUT_OF_RANGE;
4771	break;
4772	}
4773	case MSR_IA32_X2APIC_EOI:
4774	{
4775	if (u64Value != 0)
4776	return VERR_OUT_OF_RANGE;
4777	break;
4778	}
4779	}
4780
4781	/* Write the MSR to the virtual-APIC page. */
4782	uint16_t const offReg = (idMsr & 0xff) << 4;
4783	iemVmxVirtApicWriteRaw64(pVCpu, offReg, u64Value);
4784
4785	/*
4786	* Record the currently updated APIC offset, as we need this later for figuring
4787	* out whether to perform TPR, EOI or self-IPI virtualization as well as well
4788	* as for supplying the exit qualification when causing an APIC-write VM-exit.
4789	*/
4790	iemVmxVirtApicSetPendingWrite(pVCpu, offReg);
4791
4792	return VINF_VMX_MODIFIES_BEHAVIOR;
4793	}
4794
4795	return VINF_VMX_INTERCEPT_NOT_ACTIVE;
4796	}
4797
4798
4799	/**
4800	* Interface for HM and EM to virtualize x2APIC MSR accesses.
4801	*
4802	* @returns Strict VBox status code.
4803	* @retval VINF_VMX_MODIFIES_BEHAVIOR if the MSR access was virtualized.
4804	* @retval VINF_VMX_INTERCEPT_NOT_ACTIVE if the MSR access must be handled by
4805	* the x2APIC device.
4806	* @retval VERR_OUT_RANGE if the caller must raise \#GP(0).
4807	*
4808	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4809	* @param idMsr The MSR being read.
4810	* @param pu64Value Pointer to the value being written or where to store the
4811	* value being read.
4812	* @param fWrite Whether this is an MSR write or read access.
4813	* @thread EMT(pVCpu)
4814	*/
4815	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVirtApicAccessMsr(PVMCPUCC pVCpu, uint32_t idMsr, uint64_t *pu64Value, bool fWrite)
4816	{
4817	Assert(pu64Value);
4818
4819	VBOXSTRICTRC rcStrict;
4820	if (fWrite)
4821	rcStrict = iemVmxVirtApicAccessMsrWrite(pVCpu, idMsr, *pu64Value);
4822	else
4823	rcStrict = iemVmxVirtApicAccessMsrRead(pVCpu, idMsr, pu64Value);
4824	Assert(!pVCpu->iem.s.cActiveMappings);
4825	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
4826
4827	}
4828
4829
4830	/**
4831	* Finds the most significant set bit in a virtual-APIC 256-bit sparse register.
4832	*
4833	* @returns VBox status code.
4834	* @retval VINF_SUCCESS when the highest set bit is found.
4835	* @retval VERR_NOT_FOUND when no bit is set.
4836	*
4837	* @param pVCpu The cross context virtual CPU structure.
4838	* @param offReg The offset of the APIC 256-bit sparse register.
4839	* @param pidxHighestBit Where to store the highest bit (most significant bit)
4840	* set in the register. Only valid when VINF_SUCCESS is
4841	* returned.
4842	*
4843	* @remarks The format of the 256-bit sparse register here mirrors that found in
4844	* real APIC hardware.
4845	*/
4846	static int iemVmxVirtApicGetHighestSetBitInReg(PVMCPUCC pVCpu, uint16_t offReg, uint8_t *pidxHighestBit)
4847	{
4848	Assert(offReg < XAPIC_OFF_END + 4);
4849	Assert(pidxHighestBit);
4850
4851	/*
4852	* There are 8 contiguous fragments (of 16-bytes each) in the sparse register.
4853	* However, in each fragment only the first 4 bytes are used.
4854	*/
4855	uint8_t const cFrags = 8;
4856	for (int8_t iFrag = cFrags; iFrag >= 0; iFrag--)
4857	{
4858	uint16_t const offFrag = iFrag * 16;
4859	uint32_t const u32Frag = iemVmxVirtApicReadRaw32(pVCpu, offReg + offFrag);
4860	if (!u32Frag)
4861	continue;
4862
4863	unsigned idxHighestBit = ASMBitLastSetU32(u32Frag);
4864	Assert(idxHighestBit > 0);
4865	--idxHighestBit;
4866	Assert(idxHighestBit <= UINT8_MAX);
4867	*pidxHighestBit = idxHighestBit;
4868	return VINF_SUCCESS;
4869	}
4870	return VERR_NOT_FOUND;
4871	}
4872
4873
4874	/**
4875	* Evaluates pending virtual interrupts.
4876	*
4877	* @param pVCpu The cross context virtual CPU structure.
4878	*/
4879	static void iemVmxEvalPendingVirtIntrs(PVMCPUCC pVCpu) RT_NOEXCEPT
4880	{
4881	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY);
4882
4883	if (!(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_INT_WINDOW_EXIT))
4884	{
4885	uint8_t const uRvi = RT_LO_U8(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u16GuestIntStatus);
4886	uint8_t const uPpr = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_PPR);
4887
4888	if ((uRvi >> 4) > (uPpr >> 4))
4889	{
4890	Log2(("eval_virt_intrs: uRvi=%#x uPpr=%#x - Signalling pending interrupt\n", uRvi, uPpr));
4891	VMCPU_FF_SET(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST);
4892	}
4893	else
4894	Log2(("eval_virt_intrs: uRvi=%#x uPpr=%#x - Nothing to do\n", uRvi, uPpr));
4895	}
4896	}
4897
4898
4899	/**
4900	* Performs PPR virtualization.
4901	*
4902	* @returns VBox strict status code.
4903	* @param pVCpu The cross context virtual CPU structure.
4904	*/
4905	static void iemVmxPprVirtualization(PVMCPUCC pVCpu) RT_NOEXCEPT
4906	{
4907	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW);
4908	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY);
4909
4910	/*
4911	* PPR virtualization is caused in response to a VM-entry, TPR-virtualization,
4912	* or EOI-virtualization.
4913	*
4914	* See Intel spec. 29.1.3 "PPR Virtualization".
4915	*/
4916	uint8_t const uTpr = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_TPR);
4917	uint8_t const uSvi = RT_HI_U8(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u16GuestIntStatus) & 0xf0;
4918
4919	uint32_t uPpr;
4920	if ((uTpr & 0xf0) >= uSvi)
4921	uPpr = uTpr;
4922	else
4923	uPpr = uSvi;
4924
4925	Log2(("ppr_virt: uTpr=%#x uSvi=%#x uPpr=%#x\n", uTpr, uSvi, uPpr));
4926	iemVmxVirtApicWriteRaw32(pVCpu, XAPIC_OFF_PPR, uPpr);
4927	}
4928
4929
4930	/**
4931	* Performs VMX TPR virtualization.
4932	*
4933	* @returns VBox strict status code.
4934	* @param pVCpu The cross context virtual CPU structure.
4935	*/
4936	static VBOXSTRICTRC iemVmxTprVirtualization(PVMCPUCC pVCpu) RT_NOEXCEPT
4937	{
4938	Assert(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW);
4939
4940	/*
4941	* We should have already performed the virtual-APIC write to the TPR offset
4942	* in the virtual-APIC page. We now perform TPR virtualization.
4943	*
4944	* See Intel spec. 29.1.2 "TPR Virtualization".
4945	*/
4946	if (!(pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY))
4947	{
4948	uint32_t const uTprThreshold = pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32TprThreshold;
4949	uint32_t const uTpr = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_TPR);
4950
4951	/*
4952	* If the VTPR falls below the TPR threshold, we must cause a VM-exit.
4953	* See Intel spec. 29.1.2 "TPR Virtualization".
4954	*/
4955	if (((uTpr >> 4) & 0xf) < uTprThreshold)
4956	{
4957	Log2(("tpr_virt: uTpr=%u uTprThreshold=%u -> VM-exit\n", uTpr, uTprThreshold));
4958	return iemVmxVmexit(pVCpu, VMX_EXIT_TPR_BELOW_THRESHOLD, 0 /* u64ExitQual */);
4959	}
4960	}
4961	else
4962	{
4963	iemVmxPprVirtualization(pVCpu);
4964	iemVmxEvalPendingVirtIntrs(pVCpu);
4965	}
4966
4967	return VINF_SUCCESS;
4968	}
4969
4970
4971	/**
4972	* Checks whether an EOI write for the given interrupt vector causes a VM-exit or
4973	* not.
4974	*
4975	* @returns @c true if the EOI write is intercepted, @c false otherwise.
4976	* @param pVCpu The cross context virtual CPU structure.
4977	* @param uVector The interrupt that was acknowledged using an EOI.
4978	*/
4979	static bool iemVmxIsEoiInterceptSet(PCVMCPU pVCpu, uint8_t uVector) RT_NOEXCEPT
4980	{
4981	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
4982	Assert(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY);
4983
4984	if (uVector < 64)
4985	return RT_BOOL(pVmcs->u64EoiExitBitmap0.u & RT_BIT_64(uVector));
4986	if (uVector < 128)
4987	return RT_BOOL(pVmcs->u64EoiExitBitmap1.u & RT_BIT_64(uVector));
4988	if (uVector < 192)
4989	return RT_BOOL(pVmcs->u64EoiExitBitmap2.u & RT_BIT_64(uVector));
4990	return RT_BOOL(pVmcs->u64EoiExitBitmap3.u & RT_BIT_64(uVector));
4991	}
4992
4993
4994	/**
4995	* Performs EOI virtualization.
4996	*
4997	* @returns VBox strict status code.
4998	* @param pVCpu The cross context virtual CPU structure.
4999	*/
5000	static VBOXSTRICTRC iemVmxEoiVirtualization(PVMCPUCC pVCpu) RT_NOEXCEPT
5001	{
5002	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5003	Assert(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY);
5004
5005	/*
5006	* Clear the interrupt guest-interrupt as no longer in-service (ISR)
5007	* and get the next guest-interrupt that's in-service (if any).
5008	*
5009	* See Intel spec. 29.1.4 "EOI Virtualization".
5010	*/
5011	uint8_t const uRvi = RT_LO_U8(pVmcs->u16GuestIntStatus);
5012	uint8_t const uSvi = RT_HI_U8(pVmcs->u16GuestIntStatus);
5013	Log2(("eoi_virt: uRvi=%#x uSvi=%#x\n", uRvi, uSvi));
5014
5015	uint8_t uVector = uSvi;
5016	iemVmxVirtApicClearVectorInReg(pVCpu, XAPIC_OFF_ISR0, uVector);
5017
5018	uVector = 0;
5019	iemVmxVirtApicGetHighestSetBitInReg(pVCpu, XAPIC_OFF_ISR0, &uVector);
5020
5021	if (uVector)
5022	Log2(("eoi_virt: next interrupt %#x\n", uVector));
5023	else
5024	Log2(("eoi_virt: no interrupt pending in ISR\n"));
5025
5026	/* Update guest-interrupt status SVI (leave RVI portion as it is) in the VMCS. */
5027	pVmcs->u16GuestIntStatus = RT_MAKE_U16(uRvi, uVector);
5028
5029	iemVmxPprVirtualization(pVCpu);
5030	if (iemVmxIsEoiInterceptSet(pVCpu, uVector))
5031	return iemVmxVmexit(pVCpu, VMX_EXIT_VIRTUALIZED_EOI, uVector);
5032	iemVmxEvalPendingVirtIntrs(pVCpu);
5033	return VINF_SUCCESS;
5034	}
5035
5036
5037	/**
5038	* Performs self-IPI virtualization.
5039	*
5040	* @returns VBox strict status code.
5041	* @param pVCpu The cross context virtual CPU structure.
5042	*/
5043	static VBOXSTRICTRC iemVmxSelfIpiVirtualization(PVMCPUCC pVCpu) RT_NOEXCEPT
5044	{
5045	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5046	Assert(pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW);
5047
5048	/*
5049	* We should have already performed the virtual-APIC write to the self-IPI offset
5050	* in the virtual-APIC page. We now perform self-IPI virtualization.
5051	*
5052	* See Intel spec. 29.1.5 "Self-IPI Virtualization".
5053	*/
5054	uint8_t const uVector = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_ICR_LO);
5055	Log2(("self_ipi_virt: uVector=%#x\n", uVector));
5056	iemVmxVirtApicSetVectorInReg(pVCpu, XAPIC_OFF_IRR0, uVector);
5057	uint8_t const uRvi = RT_LO_U8(pVmcs->u16GuestIntStatus);
5058	uint8_t const uSvi = RT_HI_U8(pVmcs->u16GuestIntStatus);
5059	if (uVector > uRvi)
5060	pVmcs->u16GuestIntStatus = RT_MAKE_U16(uVector, uSvi);
5061	iemVmxEvalPendingVirtIntrs(pVCpu);
5062	return VINF_SUCCESS;
5063	}
5064
5065
5066	/**
5067	* Performs VMX APIC-write emulation.
5068	*
5069	* @returns VBox strict status code.
5070	* @param pVCpu The cross context virtual CPU structure.
5071	*/
5072	VBOXSTRICTRC iemVmxApicWriteEmulation(PVMCPUCC pVCpu) RT_NOEXCEPT
5073	{
5074	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5075
5076	/* Import the virtual-APIC write offset (part of the hardware-virtualization state). */
5077	IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_HWVIRT);
5078
5079	/*
5080	* Perform APIC-write emulation based on the virtual-APIC register written.
5081	* See Intel spec. 29.4.3.2 "APIC-Write Emulation".
5082	*/
5083	uint16_t const offApicWrite = iemVmxVirtApicClearPendingWrite(pVCpu);
5084	VBOXSTRICTRC rcStrict;
5085	switch (offApicWrite)
5086	{
5087	case XAPIC_OFF_TPR:
5088	{
5089	/* Clear bytes 3:1 of the VTPR and perform TPR virtualization. */
5090	uint32_t uTpr = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_TPR);
5091	uTpr &= UINT32_C(0x000000ff);
5092	iemVmxVirtApicWriteRaw32(pVCpu, XAPIC_OFF_TPR, uTpr);
5093	Log2(("iemVmxApicWriteEmulation: TPR write %#x\n", uTpr));
5094	rcStrict = iemVmxTprVirtualization(pVCpu);
5095	break;
5096	}
5097
5098	case XAPIC_OFF_EOI:
5099	{
5100	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY)
5101	{
5102	/* Clear VEOI and perform EOI virtualization. */
5103	iemVmxVirtApicWriteRaw32(pVCpu, XAPIC_OFF_EOI, 0);
5104	Log2(("iemVmxApicWriteEmulation: EOI write\n"));
5105	rcStrict = iemVmxEoiVirtualization(pVCpu);
5106	}
5107	else
5108	rcStrict = iemVmxVmexitApicWrite(pVCpu, offApicWrite);
5109	break;
5110	}
5111
5112	case XAPIC_OFF_ICR_LO:
5113	{
5114	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY)
5115	{
5116	/* If the ICR_LO is valid, write it and perform self-IPI virtualization. */
5117	uint32_t const uIcrLo = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_TPR);
5118	uint32_t const fIcrLoMb0 = UINT32_C(0xfffbb700);
5119	uint32_t const fIcrLoMb1 = UINT32_C(0x000000f0);
5120	if ( !(uIcrLo & fIcrLoMb0)
5121	&& (uIcrLo & fIcrLoMb1))
5122	{
5123	Log2(("iemVmxApicWriteEmulation: Self-IPI virtualization with vector %#x\n", (uIcrLo & 0xff)));
5124	rcStrict = iemVmxSelfIpiVirtualization(pVCpu);
5125	}
5126	else
5127	rcStrict = iemVmxVmexitApicWrite(pVCpu, offApicWrite);
5128	}
5129	else
5130	rcStrict = iemVmxVmexitApicWrite(pVCpu, offApicWrite);
5131	break;
5132	}
5133
5134	case XAPIC_OFF_ICR_HI:
5135	{
5136	/* Clear bytes 2:0 of VICR_HI. No other virtualization or VM-exit must occur. */
5137	uint32_t uIcrHi = iemVmxVirtApicReadRaw32(pVCpu, XAPIC_OFF_ICR_HI);
5138	uIcrHi &= UINT32_C(0xff000000);
5139	iemVmxVirtApicWriteRaw32(pVCpu, XAPIC_OFF_ICR_HI, uIcrHi);
5140	rcStrict = VINF_SUCCESS;
5141	break;
5142	}
5143
5144	default:
5145	{
5146	/* Writes to any other virtual-APIC register causes an APIC-write VM-exit. */
5147	rcStrict = iemVmxVmexitApicWrite(pVCpu, offApicWrite);
5148	break;
5149	}
5150	}
5151
5152	return rcStrict;
5153	}
5154
5155
5156	/**
5157	* Interface for HM and EM to perform an APIC-write emulation which may cause a
5158	* VM-exit.
5159	*
5160	* @returns Strict VBox status code.
5161	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
5162	* @thread EMT(pVCpu)
5163	*/
5164	VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitApicWrite(PVMCPUCC pVCpu)
5165	{
5166	VBOXSTRICTRC rcStrict = iemVmxApicWriteEmulation(pVCpu);
5167	Assert(!pVCpu->iem.s.cActiveMappings);
5168	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
5169	}
5170
5171
5172	/**
5173	* Checks guest control registers, debug registers and MSRs as part of VM-entry.
5174	*
5175	* @param pVCpu The cross context virtual CPU structure.
5176	* @param pszInstr The VMX instruction name (for logging purposes).
5177	*/
5178	DECLINLINE(int) iemVmxVmentryCheckGuestControlRegsMsrs(PVMCPUCC pVCpu, const char *pszInstr)
5179	{
5180	/*
5181	* Guest Control Registers, Debug Registers, and MSRs.
5182	* See Intel spec. 26.3.1.1 "Checks on Guest Control Registers, Debug Registers, and MSRs".
5183	*/
5184	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5185	const char * const pszFailure = "VM-exit";
5186	bool const fUnrestrictedGuest = RT_BOOL(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST);
5187
5188	/* CR0 reserved bits. */
5189	{
5190	/* CR0 MB1 bits. */
5191	uint64_t const u64Cr0Fixed0 = iemVmxGetCr0Fixed0(pVCpu, true /* fVmxNonRootMode */);
5192	if ((pVmcs->u64GuestCr0.u & u64Cr0Fixed0) == u64Cr0Fixed0)
5193	{ /* likely */ }
5194	else
5195	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr0Fixed0);
5196
5197	/* CR0 MBZ bits. */
5198	uint64_t const u64Cr0Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr0Fixed1;
5199	if (!(pVmcs->u64GuestCr0.u & ~u64Cr0Fixed1))
5200	{ /* likely */ }
5201	else
5202	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr0Fixed1);
5203
5204	/* Without unrestricted guest support, VT-x supports does not support unpaged protected mode. */
5205	if ( !fUnrestrictedGuest
5206	&& (pVmcs->u64GuestCr0.u & X86_CR0_PG)
5207	&& !(pVmcs->u64GuestCr0.u & X86_CR0_PE))
5208	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr0PgPe);
5209	}
5210
5211	/* CR4 reserved bits. */
5212	{
5213	/* CR4 MB1 bits. */
5214	uint64_t const u64Cr4Fixed0 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed0;
5215	if ((pVmcs->u64GuestCr4.u & u64Cr4Fixed0) == u64Cr4Fixed0)
5216	{ /* likely */ }
5217	else
5218	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr4Fixed0);
5219
5220	/* CR4 MBZ bits. */
5221	uint64_t const u64Cr4Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed1;
5222	if (!(pVmcs->u64GuestCr4.u & ~u64Cr4Fixed1))
5223	{ /* likely */ }
5224	else
5225	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr4Fixed1);
5226	}
5227
5228	/* DEBUGCTL MSR. */
5229	if ( !(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
5230	\|\| !(pVmcs->u64GuestDebugCtlMsr.u & ~MSR_IA32_DEBUGCTL_VALID_MASK_INTEL))
5231	{ /* likely */ }
5232	else
5233	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestDebugCtl);
5234
5235	/* 64-bit CPU checks. */
5236	bool const fGstInLongMode = RT_BOOL(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
5237	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5238	{
5239	if (fGstInLongMode)
5240	{
5241	/* PAE must be set. */
5242	if ( (pVmcs->u64GuestCr0.u & X86_CR0_PG)
5243	&& (pVmcs->u64GuestCr0.u & X86_CR4_PAE))
5244	{ /* likely */ }
5245	else
5246	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPae);
5247	}
5248	else
5249	{
5250	/* PCIDE should not be set. */
5251	if (!(pVmcs->u64GuestCr4.u & X86_CR4_PCIDE))
5252	{ /* likely */ }
5253	else
5254	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPcide);
5255	}
5256
5257	/* CR3. */
5258	if (!(pVmcs->u64GuestCr3.u >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cMaxPhysAddrWidth))
5259	{ /* likely */ }
5260	else
5261	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestCr3);
5262
5263	/* DR7. */
5264	if ( !(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
5265	\|\| !(pVmcs->u64GuestDr7.u & X86_DR7_MBZ_MASK))
5266	{ /* likely */ }
5267	else
5268	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestDr7);
5269
5270	/* SYSENTER ESP and SYSENTER EIP. */
5271	if ( X86_IS_CANONICAL(pVmcs->u64GuestSysenterEsp.u)
5272	&& X86_IS_CANONICAL(pVmcs->u64GuestSysenterEip.u))
5273	{ /* likely */ }
5274	else
5275	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSysenterEspEip);
5276	}
5277
5278	/* We don't support IA32_PERF_GLOBAL_CTRL MSR yet. */
5279	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PERF_MSR));
5280
5281	/* PAT MSR. */
5282	if ( !(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PAT_MSR)
5283	\|\| CPUMIsPatMsrValid(pVmcs->u64GuestPatMsr.u))
5284	{ /* likely */ }
5285	else
5286	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPatMsr);
5287
5288	/* EFER MSR. */
5289	if (pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_EFER_MSR)
5290	{
5291	uint64_t const uValidEferMask = CPUMGetGuestEferMsrValidMask(pVCpu->CTX_SUFF(pVM));
5292	if (!(pVmcs->u64GuestEferMsr.u & ~uValidEferMask))
5293	{ /* likely */ }
5294	else
5295	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestEferMsrRsvd);
5296
5297	bool const fGstLma = RT_BOOL(pVmcs->u64GuestEferMsr.u & MSR_K6_EFER_LMA);
5298	bool const fGstLme = RT_BOOL(pVmcs->u64GuestEferMsr.u & MSR_K6_EFER_LME);
5299	if ( fGstLma == fGstInLongMode
5300	&& ( !(pVmcs->u64GuestCr0.u & X86_CR0_PG)
5301	\|\| fGstLma == fGstLme))
5302	{ /* likely */ }
5303	else
5304	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestEferMsr);
5305	}
5306
5307	/* We don't support IA32_BNDCFGS MSR yet. */
5308	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_BNDCFGS_MSR));
5309
5310	NOREF(pszInstr);
5311	NOREF(pszFailure);
5312	return VINF_SUCCESS;
5313	}
5314
5315
5316	/**
5317	* Checks guest segment registers, LDTR and TR as part of VM-entry.
5318	*
5319	* @param pVCpu The cross context virtual CPU structure.
5320	* @param pszInstr The VMX instruction name (for logging purposes).
5321	*/
5322	DECLINLINE(int) iemVmxVmentryCheckGuestSegRegs(PVMCPUCC pVCpu, const char *pszInstr)
5323	{
5324	/*
5325	* Segment registers.
5326	* See Intel spec. 26.3.1.2 "Checks on Guest Segment Registers".
5327	*/
5328	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5329	const char * const pszFailure = "VM-exit";
5330	bool const fGstInV86Mode = RT_BOOL(pVmcs->u64GuestRFlags.u & X86_EFL_VM);
5331	bool const fUnrestrictedGuest = RT_BOOL(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST);
5332	bool const fGstInLongMode = RT_BOOL(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
5333
5334	/* Selectors. */
5335	if ( !fGstInV86Mode
5336	&& !fUnrestrictedGuest
5337	&& (pVmcs->GuestSs & X86_SEL_RPL) != (pVmcs->GuestCs & X86_SEL_RPL))
5338	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegSelCsSsRpl);
5339
5340	for (unsigned iSegReg = 0; iSegReg < X86_SREG_COUNT; iSegReg++)
5341	{
5342	CPUMSELREG SelReg;
5343	int rc = iemVmxVmcsGetGuestSegReg(pVmcs, iSegReg, &SelReg);
5344	if (RT_LIKELY(rc == VINF_SUCCESS))
5345	{ /* likely */ }
5346	else
5347	return rc;
5348
5349	/*
5350	* Virtual-8086 mode checks.
5351	*/
5352	if (fGstInV86Mode)
5353	{
5354	/* Base address. */
5355	if (SelReg.u64Base == (uint64_t)SelReg.Sel << 4)
5356	{ /* likely */ }
5357	else
5358	{
5359	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegBaseV86(iSegReg);
5360	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5361	}
5362
5363	/* Limit. */
5364	if (SelReg.u32Limit == 0xffff)
5365	{ /* likely */ }
5366	else
5367	{
5368	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegLimitV86(iSegReg);
5369	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5370	}
5371
5372	/* Attribute. */
5373	if (SelReg.Attr.u == 0xf3)
5374	{ /* likely */ }
5375	else
5376	{
5377	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrV86(iSegReg);
5378	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5379	}
5380
5381	/* We're done; move to checking the next segment. */
5382	continue;
5383	}
5384
5385	/* Checks done by 64-bit CPUs. */
5386	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5387	{
5388	/* Base address. */
5389	if ( iSegReg == X86_SREG_FS
5390	\|\| iSegReg == X86_SREG_GS)
5391	{
5392	if (X86_IS_CANONICAL(SelReg.u64Base))
5393	{ /* likely */ }
5394	else
5395	{
5396	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegBase(iSegReg);
5397	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5398	}
5399	}
5400	else if (iSegReg == X86_SREG_CS)
5401	{
5402	if (!RT_HI_U32(SelReg.u64Base))
5403	{ /* likely */ }
5404	else
5405	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegBaseCs);
5406	}
5407	else
5408	{
5409	if ( SelReg.Attr.n.u1Unusable
5410	\|\| !RT_HI_U32(SelReg.u64Base))
5411	{ /* likely */ }
5412	else
5413	{
5414	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegBase(iSegReg);
5415	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5416	}
5417	}
5418	}
5419
5420	/*
5421	* Checks outside Virtual-8086 mode.
5422	*/
5423	uint8_t const uSegType = SelReg.Attr.n.u4Type;
5424	uint8_t const fCodeDataSeg = SelReg.Attr.n.u1DescType;
5425	uint8_t const fUsable = !SelReg.Attr.n.u1Unusable;
5426	uint8_t const uDpl = SelReg.Attr.n.u2Dpl;
5427	uint8_t const fPresent = SelReg.Attr.n.u1Present;
5428	uint8_t const uGranularity = SelReg.Attr.n.u1Granularity;
5429	uint8_t const uDefBig = SelReg.Attr.n.u1DefBig;
5430	uint8_t const fSegLong = SelReg.Attr.n.u1Long;
5431
5432	/* Code or usable segment. */
5433	if ( iSegReg == X86_SREG_CS
5434	\|\| fUsable)
5435	{
5436	/* Reserved bits (bits 31:17 and bits 11:8). */
5437	if (!(SelReg.Attr.u & 0xfffe0f00))
5438	{ /* likely */ }
5439	else
5440	{
5441	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrRsvd(iSegReg);
5442	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5443	}
5444
5445	/* Descriptor type. */
5446	if (fCodeDataSeg)
5447	{ /* likely */ }
5448	else
5449	{
5450	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrDescType(iSegReg);
5451	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5452	}
5453
5454	/* Present. */
5455	if (fPresent)
5456	{ /* likely */ }
5457	else
5458	{
5459	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrPresent(iSegReg);
5460	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5461	}
5462
5463	/* Granularity. */
5464	if ( ((SelReg.u32Limit & 0x00000fff) == 0x00000fff \|\| !uGranularity)
5465	&& ((SelReg.u32Limit & 0xfff00000) == 0x00000000 \|\| uGranularity))
5466	{ /* likely */ }
5467	else
5468	{
5469	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrGran(iSegReg);
5470	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5471	}
5472	}
5473
5474	if (iSegReg == X86_SREG_CS)
5475	{
5476	/* Segment Type and DPL. */
5477	if ( uSegType == (X86_SEL_TYPE_RW \| X86_SEL_TYPE_ACCESSED)
5478	&& fUnrestrictedGuest)
5479	{
5480	if (uDpl == 0)
5481	{ /* likely */ }
5482	else
5483	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsDplZero);
5484	}
5485	else if ( uSegType == (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_ACCESSED)
5486	\|\| uSegType == (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_READ \| X86_SEL_TYPE_ACCESSED))
5487	{
5488	X86DESCATTR AttrSs; AttrSs.u = pVmcs->u32GuestSsAttr;
5489	if (uDpl == AttrSs.n.u2Dpl)
5490	{ /* likely */ }
5491	else
5492	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsDplEqSs);
5493	}
5494	else if ((uSegType & (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_CONF \| X86_SEL_TYPE_ACCESSED))
5495	== (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_CONF \| X86_SEL_TYPE_ACCESSED))
5496	{
5497	X86DESCATTR AttrSs; AttrSs.u = pVmcs->u32GuestSsAttr;
5498	if (uDpl <= AttrSs.n.u2Dpl)
5499	{ /* likely */ }
5500	else
5501	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsDplLtSs);
5502	}
5503	else
5504	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsType);
5505
5506	/* Def/Big. */
5507	if ( fGstInLongMode
5508	&& fSegLong)
5509	{
5510	if (uDefBig == 0)
5511	{ /* likely */ }
5512	else
5513	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsDefBig);
5514	}
5515	}
5516	else if (iSegReg == X86_SREG_SS)
5517	{
5518	/* Segment Type. */
5519	if ( !fUsable
5520	\|\| uSegType == (X86_SEL_TYPE_RW \| X86_SEL_TYPE_ACCESSED)
5521	\|\| uSegType == (X86_SEL_TYPE_DOWN \| X86_SEL_TYPE_RW \| X86_SEL_TYPE_ACCESSED))
5522	{ /* likely */ }
5523	else
5524	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrSsType);
5525
5526	/* DPL. */
5527	if (!fUnrestrictedGuest)
5528	{
5529	if (uDpl == (SelReg.Sel & X86_SEL_RPL))
5530	{ /* likely */ }
5531	else
5532	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrSsDplEqRpl);
5533	}
5534	X86DESCATTR AttrCs; AttrCs.u = pVmcs->u32GuestCsAttr;
5535	if ( AttrCs.n.u4Type == (X86_SEL_TYPE_RW \| X86_SEL_TYPE_ACCESSED)
5536	\|\| !(pVmcs->u64GuestCr0.u & X86_CR0_PE))
5537	{
5538	if (uDpl == 0)
5539	{ /* likely */ }
5540	else
5541	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrSsDplZero);
5542	}
5543	}
5544	else
5545	{
5546	/* DS, ES, FS, GS. */
5547	if (fUsable)
5548	{
5549	/* Segment type. */
5550	if (uSegType & X86_SEL_TYPE_ACCESSED)
5551	{ /* likely */ }
5552	else
5553	{
5554	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrTypeAcc(iSegReg);
5555	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5556	}
5557
5558	if ( !(uSegType & X86_SEL_TYPE_CODE)
5559	\|\| (uSegType & X86_SEL_TYPE_READ))
5560	{ /* likely */ }
5561	else
5562	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrCsTypeRead);
5563
5564	/* DPL. */
5565	if ( !fUnrestrictedGuest
5566	&& uSegType <= (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_READ \| X86_SEL_TYPE_ACCESSED))
5567	{
5568	if (uDpl >= (SelReg.Sel & X86_SEL_RPL))
5569	{ /* likely */ }
5570	else
5571	{
5572	VMXVDIAG const enmDiag = iemVmxGetDiagVmentrySegAttrDplRpl(iSegReg);
5573	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
5574	}
5575	}
5576	}
5577	}
5578	}
5579
5580	/*
5581	* LDTR.
5582	*/
5583	{
5584	CPUMSELREG Ldtr;
5585	Ldtr.Sel = pVmcs->GuestLdtr;
5586	Ldtr.u32Limit = pVmcs->u32GuestLdtrLimit;
5587	Ldtr.u64Base = pVmcs->u64GuestLdtrBase.u;
5588	Ldtr.Attr.u = pVmcs->u32GuestLdtrAttr;
5589
5590	if (!Ldtr.Attr.n.u1Unusable)
5591	{
5592	/* Selector. */
5593	if (!(Ldtr.Sel & X86_SEL_LDT))
5594	{ /* likely */ }
5595	else
5596	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegSelLdtr);
5597
5598	/* Base. */
5599	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5600	{
5601	if (X86_IS_CANONICAL(Ldtr.u64Base))
5602	{ /* likely */ }
5603	else
5604	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegBaseLdtr);
5605	}
5606
5607	/* Attributes. */
5608	/* Reserved bits (bits 31:17 and bits 11:8). */
5609	if (!(Ldtr.Attr.u & 0xfffe0f00))
5610	{ /* likely */ }
5611	else
5612	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrLdtrRsvd);
5613
5614	if (Ldtr.Attr.n.u4Type == X86_SEL_TYPE_SYS_LDT)
5615	{ /* likely */ }
5616	else
5617	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrLdtrType);
5618
5619	if (!Ldtr.Attr.n.u1DescType)
5620	{ /* likely */ }
5621	else
5622	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrLdtrDescType);
5623
5624	if (Ldtr.Attr.n.u1Present)
5625	{ /* likely */ }
5626	else
5627	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrLdtrPresent);
5628
5629	if ( ((Ldtr.u32Limit & 0x00000fff) == 0x00000fff \|\| !Ldtr.Attr.n.u1Granularity)
5630	&& ((Ldtr.u32Limit & 0xfff00000) == 0x00000000 \|\| Ldtr.Attr.n.u1Granularity))
5631	{ /* likely */ }
5632	else
5633	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrLdtrGran);
5634	}
5635	}
5636
5637	/*
5638	* TR.
5639	*/
5640	{
5641	CPUMSELREG Tr;
5642	Tr.Sel = pVmcs->GuestTr;
5643	Tr.u32Limit = pVmcs->u32GuestTrLimit;
5644	Tr.u64Base = pVmcs->u64GuestTrBase.u;
5645	Tr.Attr.u = pVmcs->u32GuestTrAttr;
5646
5647	/* Selector. */
5648	if (!(Tr.Sel & X86_SEL_LDT))
5649	{ /* likely */ }
5650	else
5651	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegSelTr);
5652
5653	/* Base. */
5654	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5655	{
5656	if (X86_IS_CANONICAL(Tr.u64Base))
5657	{ /* likely */ }
5658	else
5659	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegBaseTr);
5660	}
5661
5662	/* Attributes. */
5663	/* Reserved bits (bits 31:17 and bits 11:8). */
5664	if (!(Tr.Attr.u & 0xfffe0f00))
5665	{ /* likely */ }
5666	else
5667	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrRsvd);
5668
5669	if (!Tr.Attr.n.u1Unusable)
5670	{ /* likely */ }
5671	else
5672	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrUnusable);
5673
5674	if ( Tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_386_TSS_BUSY
5675	\|\| ( !fGstInLongMode
5676	&& Tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_286_TSS_BUSY))
5677	{ /* likely */ }
5678	else
5679	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrType);
5680
5681	if (!Tr.Attr.n.u1DescType)
5682	{ /* likely */ }
5683	else
5684	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrDescType);
5685
5686	if (Tr.Attr.n.u1Present)
5687	{ /* likely */ }
5688	else
5689	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrPresent);
5690
5691	if ( ((Tr.u32Limit & 0x00000fff) == 0x00000fff \|\| !Tr.Attr.n.u1Granularity)
5692	&& ((Tr.u32Limit & 0xfff00000) == 0x00000000 \|\| Tr.Attr.n.u1Granularity))
5693	{ /* likely */ }
5694	else
5695	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestSegAttrTrGran);
5696	}
5697
5698	NOREF(pszInstr);
5699	NOREF(pszFailure);
5700	return VINF_SUCCESS;
5701	}
5702
5703
5704	/**
5705	* Checks guest GDTR and IDTR as part of VM-entry.
5706	*
5707	* @param pVCpu The cross context virtual CPU structure.
5708	* @param pszInstr The VMX instruction name (for logging purposes).
5709	*/
5710	DECLINLINE(int) iemVmxVmentryCheckGuestGdtrIdtr(PVMCPUCC pVCpu, const char *pszInstr)
5711	{
5712	/*
5713	* GDTR and IDTR.
5714	* See Intel spec. 26.3.1.3 "Checks on Guest Descriptor-Table Registers".
5715	*/
5716	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5717	const char *const pszFailure = "VM-exit";
5718
5719	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5720	{
5721	/* Base. */
5722	if (X86_IS_CANONICAL(pVmcs->u64GuestGdtrBase.u))
5723	{ /* likely */ }
5724	else
5725	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestGdtrBase);
5726
5727	if (X86_IS_CANONICAL(pVmcs->u64GuestIdtrBase.u))
5728	{ /* likely */ }
5729	else
5730	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIdtrBase);
5731	}
5732
5733	/* Limit. */
5734	if (!RT_HI_U16(pVmcs->u32GuestGdtrLimit))
5735	{ /* likely */ }
5736	else
5737	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestGdtrLimit);
5738
5739	if (!RT_HI_U16(pVmcs->u32GuestIdtrLimit))
5740	{ /* likely */ }
5741	else
5742	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIdtrLimit);
5743
5744	NOREF(pszInstr);
5745	NOREF(pszFailure);
5746	return VINF_SUCCESS;
5747	}
5748
5749
5750	/**
5751	* Checks guest RIP and RFLAGS as part of VM-entry.
5752	*
5753	* @param pVCpu The cross context virtual CPU structure.
5754	* @param pszInstr The VMX instruction name (for logging purposes).
5755	*/
5756	DECLINLINE(int) iemVmxVmentryCheckGuestRipRFlags(PVMCPUCC pVCpu, const char *pszInstr)
5757	{
5758	/*
5759	* RIP and RFLAGS.
5760	* See Intel spec. 26.3.1.4 "Checks on Guest RIP and RFLAGS".
5761	*/
5762	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5763	const char *const pszFailure = "VM-exit";
5764	bool const fGstInLongMode = RT_BOOL(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
5765
5766	/* RIP. */
5767	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
5768	{
5769	X86DESCATTR AttrCs;
5770	AttrCs.u = pVmcs->u32GuestCsAttr;
5771	if ( !fGstInLongMode
5772	\|\| !AttrCs.n.u1Long)
5773	{
5774	if (!RT_HI_U32(pVmcs->u64GuestRip.u))
5775	{ /* likely */ }
5776	else
5777	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestRipRsvd);
5778	}
5779
5780	if ( fGstInLongMode
5781	&& AttrCs.n.u1Long)
5782	{
5783	Assert(IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cMaxLinearAddrWidth == 48); /* Canonical. */
5784	if ( IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cMaxLinearAddrWidth < 64
5785	&& X86_IS_CANONICAL(pVmcs->u64GuestRip.u))
5786	{ /* likely */ }
5787	else
5788	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestRip);
5789	}
5790	}
5791
5792	/* RFLAGS (bits 63:22 (or 31:22), bits 15, 5, 3 are reserved, bit 1 MB1). */
5793	uint64_t const uGuestRFlags = IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode ? pVmcs->u64GuestRFlags.u
5794	: pVmcs->u64GuestRFlags.s.Lo;
5795	if ( !(uGuestRFlags & ~(X86_EFL_LIVE_MASK \| X86_EFL_RA1_MASK))
5796	&& (uGuestRFlags & X86_EFL_RA1_MASK) == X86_EFL_RA1_MASK)
5797	{ /* likely */ }
5798	else
5799	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestRFlagsRsvd);
5800
5801	if (!(uGuestRFlags & X86_EFL_VM))
5802	{ /* likely */ }
5803	else
5804	{
5805	if ( fGstInLongMode
5806	\|\| !(pVmcs->u64GuestCr0.u & X86_CR0_PE))
5807	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestRFlagsVm);
5808	}
5809
5810	if (VMX_ENTRY_INT_INFO_IS_EXT_INT(pVmcs->u32EntryIntInfo))
5811	{
5812	if (uGuestRFlags & X86_EFL_IF)
5813	{ /* likely */ }
5814	else
5815	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestRFlagsIf);
5816	}
5817
5818	NOREF(pszInstr);
5819	NOREF(pszFailure);
5820	return VINF_SUCCESS;
5821	}
5822
5823
5824	/**
5825	* Checks guest non-register state as part of VM-entry.
5826	*
5827	* @param pVCpu The cross context virtual CPU structure.
5828	* @param pszInstr The VMX instruction name (for logging purposes).
5829	*/
5830	DECLINLINE(int) iemVmxVmentryCheckGuestNonRegState(PVMCPUCC pVCpu, const char *pszInstr)
5831	{
5832	/*
5833	* Guest non-register state.
5834	* See Intel spec. 26.3.1.5 "Checks on Guest Non-Register State".
5835	*/
5836	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
5837	const char *const pszFailure = "VM-exit";
5838
5839	/*
5840	* Activity state.
5841	*/
5842	uint64_t const u64GuestVmxMiscMsr = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Misc;
5843	uint32_t const fActivityStateMask = RT_BF_GET(u64GuestVmxMiscMsr, VMX_BF_MISC_ACTIVITY_STATES);
5844	if (!(pVmcs->u32GuestActivityState & fActivityStateMask))
5845	{ /* likely */ }
5846	else
5847	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestActStateRsvd);
5848
5849	X86DESCATTR AttrSs; AttrSs.u = pVmcs->u32GuestSsAttr;
5850	if ( !AttrSs.n.u2Dpl
5851	\|\| pVmcs->u32GuestActivityState != VMX_VMCS_GUEST_ACTIVITY_HLT)
5852	{ /* likely */ }
5853	else
5854	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestActStateSsDpl);
5855
5856	if ( pVmcs->u32GuestIntrState == VMX_VMCS_GUEST_INT_STATE_BLOCK_STI
5857	\|\| pVmcs->u32GuestIntrState == VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS)
5858	{
5859	if (pVmcs->u32GuestActivityState == VMX_VMCS_GUEST_ACTIVITY_ACTIVE)
5860	{ /* likely */ }
5861	else
5862	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestActStateStiMovSs);
5863	}
5864
5865	if (VMX_ENTRY_INT_INFO_IS_VALID(pVmcs->u32EntryIntInfo))
5866	{
5867	uint8_t const uType = VMX_ENTRY_INT_INFO_TYPE(pVmcs->u32EntryIntInfo);
5868	uint8_t const uVector = VMX_ENTRY_INT_INFO_VECTOR(pVmcs->u32EntryIntInfo);
5869	AssertCompile(VMX_V_GUEST_ACTIVITY_STATE_MASK == (VMX_VMCS_GUEST_ACTIVITY_HLT \| VMX_VMCS_GUEST_ACTIVITY_SHUTDOWN));
5870	switch (pVmcs->u32GuestActivityState)
5871	{
5872	case VMX_VMCS_GUEST_ACTIVITY_HLT:
5873	{
5874	if ( uType == VMX_ENTRY_INT_INFO_TYPE_EXT_INT
5875	\|\| uType == VMX_ENTRY_INT_INFO_TYPE_NMI
5876	\|\| ( uType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
5877	&& ( uVector == X86_XCPT_DB
5878	\|\| uVector == X86_XCPT_MC))
5879	\|\| ( uType == VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT
5880	&& uVector == VMX_ENTRY_INT_INFO_VECTOR_MTF))
5881	{ /* likely */ }
5882	else
5883	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestActStateHlt);
5884	break;
5885	}
5886
5887	case VMX_VMCS_GUEST_ACTIVITY_SHUTDOWN:
5888	{
5889	if ( uType == VMX_ENTRY_INT_INFO_TYPE_NMI
5890	\|\| ( uType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
5891	&& uVector == X86_XCPT_MC))
5892	{ /* likely */ }
5893	else
5894	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestActStateShutdown);
5895	break;
5896	}
5897
5898	case VMX_VMCS_GUEST_ACTIVITY_ACTIVE:
5899	default:
5900	break;
5901	}
5902	}
5903
5904	/*
5905	* Interruptibility state.
5906	*/
5907	if (!(pVmcs->u32GuestIntrState & ~VMX_VMCS_GUEST_INT_STATE_MASK))
5908	{ /* likely */ }
5909	else
5910	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateRsvd);
5911
5912	if ((pVmcs->u32GuestIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI))
5913	!= (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI))
5914	{ /* likely */ }
5915	else
5916	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateStiMovSs);
5917
5918	if ( (pVmcs->u64GuestRFlags.u & X86_EFL_IF)
5919	\|\| !(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI))
5920	{ /* likely */ }
5921	else
5922	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateRFlagsSti);
5923
5924	if (VMX_ENTRY_INT_INFO_IS_VALID(pVmcs->u32EntryIntInfo))
5925	{
5926	uint8_t const uType = VMX_ENTRY_INT_INFO_TYPE(pVmcs->u32EntryIntInfo);
5927	if (uType == VMX_ENTRY_INT_INFO_TYPE_EXT_INT)
5928	{
5929	if (!(pVmcs->u32GuestIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)))
5930	{ /* likely */ }
5931	else
5932	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateExtInt);
5933	}
5934	else if (uType == VMX_ENTRY_INT_INFO_TYPE_NMI)
5935	{
5936	if (!(pVmcs->u32GuestIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)))
5937	{ /* likely */ }
5938	else
5939	{
5940	/*
5941	* We don't support injecting NMIs when blocking-by-STI would be in effect.
5942	* We update the Exit qualification only when blocking-by-STI is set
5943	* without blocking-by-MovSS being set. Although in practise it does not
5944	* make much difference since the order of checks are implementation defined.
5945	*/
5946	if (!(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS))
5947	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_NMI_INJECT);
5948	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateNmi);
5949	}
5950
5951	if ( !(pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
5952	\|\| !(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI))
5953	{ /* likely */ }
5954	else
5955	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateVirtNmi);
5956	}
5957	}
5958
5959	/* We don't support SMM yet. So blocking-by-SMIs must not be set. */
5960	if (!(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_SMI))
5961	{ /* likely */ }
5962	else
5963	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateSmi);
5964
5965	/* We don't support SGX yet. So enclave-interruption must not be set. */
5966	if (!(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_ENCLAVE))
5967	{ /* likely */ }
5968	else
5969	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestIntStateEnclave);
5970
5971	/*
5972	* Pending debug exceptions.
5973	*/
5974	uint64_t const uPendingDbgXcpts = IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode
5975	? pVmcs->u64GuestPendingDbgXcpts.u
5976	: pVmcs->u64GuestPendingDbgXcpts.s.Lo;
5977	if (!(uPendingDbgXcpts & ~VMX_VMCS_GUEST_PENDING_DEBUG_VALID_MASK))
5978	{ /* likely */ }
5979	else
5980	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPndDbgXcptRsvd);
5981
5982	if ( (pVmcs->u32GuestIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI))
5983	\|\| pVmcs->u32GuestActivityState == VMX_VMCS_GUEST_ACTIVITY_HLT)
5984	{
5985	if ( (pVmcs->u64GuestRFlags.u & X86_EFL_TF)
5986	&& !(pVmcs->u64GuestDebugCtlMsr.u & MSR_IA32_DEBUGCTL_BTF)
5987	&& !(uPendingDbgXcpts & VMX_VMCS_GUEST_PENDING_DEBUG_XCPT_BS))
5988	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPndDbgXcptBsTf);
5989
5990	if ( ( !(pVmcs->u64GuestRFlags.u & X86_EFL_TF)
5991	\|\| (pVmcs->u64GuestDebugCtlMsr.u & MSR_IA32_DEBUGCTL_BTF))
5992	&& (uPendingDbgXcpts & VMX_VMCS_GUEST_PENDING_DEBUG_XCPT_BS))
5993	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPndDbgXcptBsNoTf);
5994	}
5995
5996	/* We don't support RTM (Real-time Transactional Memory) yet. */
5997	if (!(uPendingDbgXcpts & VMX_VMCS_GUEST_PENDING_DEBUG_RTM))
5998	{ /* likely */ }
5999	else
6000	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPndDbgXcptRtm);
6001
6002	/*
6003	* VMCS link pointer.
6004	*/
6005	if (pVmcs->u64VmcsLinkPtr.u != UINT64_C(0xffffffffffffffff))
6006	{
6007	RTGCPHYS const GCPhysShadowVmcs = pVmcs->u64VmcsLinkPtr.u;
6008	/* We don't support SMM yet (so VMCS link pointer cannot be the current VMCS). */
6009	if (GCPhysShadowVmcs != IEM_VMX_GET_CURRENT_VMCS(pVCpu))
6010	{ /* likely */ }
6011	else
6012	{
6013	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_VMCS_LINK_PTR);
6014	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmcsLinkPtrCurVmcs);
6015	}
6016
6017	/* Validate the address. */
6018	if ( !(GCPhysShadowVmcs & X86_PAGE_4K_OFFSET_MASK)
6019	&& !(GCPhysShadowVmcs >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6020	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysShadowVmcs))
6021	{ /* likely */ }
6022	else
6023	{
6024	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_VMCS_LINK_PTR);
6025	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrVmcsLinkPtr);
6026	}
6027	}
6028
6029	NOREF(pszInstr);
6030	NOREF(pszFailure);
6031	return VINF_SUCCESS;
6032	}
6033
6034
6035	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
6036	/**
6037	* Checks guest PDPTEs as part of VM-entry.
6038	*
6039	* @param pVCpu The cross context virtual CPU structure.
6040	* @param pszInstr The VMX instruction name (for logging purposes).
6041	*/
6042	static int iemVmxVmentryCheckGuestPdptes(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
6043	{
6044	/*
6045	* Guest PDPTEs.
6046	* See Intel spec. 26.3.1.5 "Checks on Guest Page-Directory-Pointer-Table Entries".
6047	*/
6048	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6049	const char * const pszFailure = "VM-exit";
6050
6051	/*
6052	* When EPT is used, we need to validate the PAE PDPTEs provided in the VMCS.
6053	* Otherwise, we load any PAE PDPTEs referenced by CR3 at a later point.
6054	*/
6055	if ( iemVmxVmcsIsGuestPaePagingEnabled(pVmcs)
6056	&& (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT))
6057	{
6058	/* Get PDPTEs from the VMCS. */
6059	X86PDPE aPaePdptes[X86_PG_PAE_PDPE_ENTRIES];
6060	aPaePdptes[0].u = pVmcs->u64GuestPdpte0.u;
6061	aPaePdptes[1].u = pVmcs->u64GuestPdpte1.u;
6062	aPaePdptes[2].u = pVmcs->u64GuestPdpte2.u;
6063	aPaePdptes[3].u = pVmcs->u64GuestPdpte3.u;
6064
6065	/* Check validity of the PDPTEs. */
6066	if (PGMGstArePaePdpesValid(pVCpu, &aPaePdptes[0]))
6067	{ /* likely */ }
6068	else
6069	{
6070	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_PDPTE);
6071	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPdpte);
6072	}
6073	}
6074
6075	NOREF(pszFailure);
6076	NOREF(pszInstr);
6077	return VINF_SUCCESS;
6078	}
6079	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX_EPT */
6080
6081
6082	/**
6083	* Checks guest-state as part of VM-entry.
6084	*
6085	* @returns VBox status code.
6086	* @param pVCpu The cross context virtual CPU structure.
6087	* @param pszInstr The VMX instruction name (for logging purposes).
6088	*/
6089	static int iemVmxVmentryCheckGuestState(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
6090	{
6091	int rc = iemVmxVmentryCheckGuestControlRegsMsrs(pVCpu, pszInstr);
6092	if (RT_SUCCESS(rc))
6093	{
6094	rc = iemVmxVmentryCheckGuestSegRegs(pVCpu, pszInstr);
6095	if (RT_SUCCESS(rc))
6096	{
6097	rc = iemVmxVmentryCheckGuestGdtrIdtr(pVCpu, pszInstr);
6098	if (RT_SUCCESS(rc))
6099	{
6100	rc = iemVmxVmentryCheckGuestRipRFlags(pVCpu, pszInstr);
6101	if (RT_SUCCESS(rc))
6102	{
6103	rc = iemVmxVmentryCheckGuestNonRegState(pVCpu, pszInstr);
6104	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
6105	if (RT_SUCCESS(rc))
6106	rc = iemVmxVmentryCheckGuestPdptes(pVCpu, pszInstr);
6107	#endif
6108	}
6109	}
6110	}
6111	}
6112	return rc;
6113	}
6114
6115
6116	/**
6117	* Checks host-state as part of VM-entry.
6118	*
6119	* @returns VBox status code.
6120	* @param pVCpu The cross context virtual CPU structure.
6121	* @param pszInstr The VMX instruction name (for logging purposes).
6122	*/
6123	static int iemVmxVmentryCheckHostState(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
6124	{
6125	/*
6126	* Host Control Registers and MSRs.
6127	* See Intel spec. 26.2.2 "Checks on Host Control Registers and MSRs".
6128	*/
6129	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6130	const char * const pszFailure = "VMFail";
6131
6132	/* CR0 reserved bits. */
6133	{
6134	/* CR0 MB1 bits. */
6135	uint64_t const u64Cr0Fixed0 = iemVmxGetCr0Fixed0(pVCpu, true /* fVmxNonRootMode */);
6136	if ((pVmcs->u64HostCr0.u & u64Cr0Fixed0) == u64Cr0Fixed0)
6137	{ /* likely */ }
6138	else
6139	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr0Fixed0);
6140
6141	/* CR0 MBZ bits. */
6142	uint64_t const u64Cr0Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr0Fixed1;
6143	if (!(pVmcs->u64HostCr0.u & ~u64Cr0Fixed1))
6144	{ /* likely */ }
6145	else
6146	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr0Fixed1);
6147	}
6148
6149	/* CR4 reserved bits. */
6150	{
6151	/* CR4 MB1 bits. */
6152	uint64_t const u64Cr4Fixed0 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed0;
6153	if ((pVmcs->u64HostCr4.u & u64Cr4Fixed0) == u64Cr4Fixed0)
6154	{ /* likely */ }
6155	else
6156	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr4Fixed0);
6157
6158	/* CR4 MBZ bits. */
6159	uint64_t const u64Cr4Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed1;
6160	if (!(pVmcs->u64HostCr4.u & ~u64Cr4Fixed1))
6161	{ /* likely */ }
6162	else
6163	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr4Fixed1);
6164	}
6165
6166	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
6167	{
6168	/* CR3 reserved bits. */
6169	if (!(pVmcs->u64HostCr3.u >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cMaxPhysAddrWidth))
6170	{ /* likely */ }
6171	else
6172	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr3);
6173
6174	/* SYSENTER ESP and SYSENTER EIP. */
6175	if ( X86_IS_CANONICAL(pVmcs->u64HostSysenterEsp.u)
6176	&& X86_IS_CANONICAL(pVmcs->u64HostSysenterEip.u))
6177	{ /* likely */ }
6178	else
6179	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostSysenterEspEip);
6180	}
6181
6182	/* We don't support IA32_PERF_GLOBAL_CTRL MSR yet. */
6183	Assert(!(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_LOAD_PERF_MSR));
6184
6185	/* PAT MSR. */
6186	if ( !(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_LOAD_PAT_MSR)
6187	\|\| CPUMIsPatMsrValid(pVmcs->u64HostPatMsr.u))
6188	{ /* likely */ }
6189	else
6190	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostPatMsr);
6191
6192	/* EFER MSR. */
6193	bool const fHostInLongMode = RT_BOOL(pVmcs->u32ExitCtls & VMX_EXIT_CTLS_HOST_ADDR_SPACE_SIZE);
6194	uint64_t const uValidEferMask = CPUMGetGuestEferMsrValidMask(pVCpu->CTX_SUFF(pVM));
6195	if (pVmcs->u32ExitCtls & VMX_EXIT_CTLS_LOAD_EFER_MSR)
6196	{
6197	if (!(pVmcs->u64HostEferMsr.u & ~uValidEferMask))
6198	{ /* likely */ }
6199	else
6200	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostEferMsrRsvd);
6201
6202	bool const fHostLma = RT_BOOL(pVmcs->u64HostEferMsr.u & MSR_K6_EFER_LMA);
6203	bool const fHostLme = RT_BOOL(pVmcs->u64HostEferMsr.u & MSR_K6_EFER_LME);
6204	if ( fHostInLongMode == fHostLma
6205	&& fHostInLongMode == fHostLme)
6206	{ /* likely */ }
6207	else
6208	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostEferMsr);
6209	}
6210
6211	/*
6212	* Host Segment and Descriptor-Table Registers.
6213	* See Intel spec. 26.2.3 "Checks on Host Segment and Descriptor-Table Registers".
6214	*/
6215	/* Selector RPL and TI. */
6216	if ( !(pVmcs->HostCs & (X86_SEL_RPL \| X86_SEL_LDT))
6217	&& !(pVmcs->HostSs & (X86_SEL_RPL \| X86_SEL_LDT))
6218	&& !(pVmcs->HostDs & (X86_SEL_RPL \| X86_SEL_LDT))
6219	&& !(pVmcs->HostEs & (X86_SEL_RPL \| X86_SEL_LDT))
6220	&& !(pVmcs->HostFs & (X86_SEL_RPL \| X86_SEL_LDT))
6221	&& !(pVmcs->HostGs & (X86_SEL_RPL \| X86_SEL_LDT))
6222	&& !(pVmcs->HostTr & (X86_SEL_RPL \| X86_SEL_LDT)))
6223	{ /* likely */ }
6224	else
6225	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostSel);
6226
6227	/* CS and TR selectors cannot be 0. */
6228	if ( pVmcs->HostCs
6229	&& pVmcs->HostTr)
6230	{ /* likely */ }
6231	else
6232	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCsTr);
6233
6234	/* SS cannot be 0 if 32-bit host. */
6235	if ( fHostInLongMode
6236	\|\| pVmcs->HostSs)
6237	{ /* likely */ }
6238	else
6239	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostSs);
6240
6241	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
6242	{
6243	/* FS, GS, GDTR, IDTR, TR base address. */
6244	if ( X86_IS_CANONICAL(pVmcs->u64HostFsBase.u)
6245	&& X86_IS_CANONICAL(pVmcs->u64HostFsBase.u)
6246	&& X86_IS_CANONICAL(pVmcs->u64HostGdtrBase.u)
6247	&& X86_IS_CANONICAL(pVmcs->u64HostIdtrBase.u)
6248	&& X86_IS_CANONICAL(pVmcs->u64HostTrBase.u))
6249	{ /* likely */ }
6250	else
6251	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostSegBase);
6252	}
6253
6254	/*
6255	* Host address-space size for 64-bit CPUs.
6256	* See Intel spec. 26.2.4 "Checks Related to Address-Space Size".
6257	*/
6258	bool const fGstInLongMode = RT_BOOL(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
6259	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
6260	{
6261	bool const fCpuInLongMode = CPUMIsGuestInLongMode(pVCpu);
6262
6263	/* Logical processor in IA-32e mode. */
6264	if (fCpuInLongMode)
6265	{
6266	if (fHostInLongMode)
6267	{
6268	/* PAE must be set. */
6269	if (pVmcs->u64HostCr4.u & X86_CR4_PAE)
6270	{ /* likely */ }
6271	else
6272	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr4Pae);
6273
6274	/* RIP must be canonical. */
6275	if (X86_IS_CANONICAL(pVmcs->u64HostRip.u))
6276	{ /* likely */ }
6277	else
6278	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostRip);
6279	}
6280	else
6281	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostLongMode);
6282	}
6283	else
6284	{
6285	/* Logical processor is outside IA-32e mode. */
6286	if ( !fGstInLongMode
6287	&& !fHostInLongMode)
6288	{
6289	/* PCIDE should not be set. */
6290	if (!(pVmcs->u64HostCr4.u & X86_CR4_PCIDE))
6291	{ /* likely */ }
6292	else
6293	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostCr4Pcide);
6294
6295	/* The high 32-bits of RIP MBZ. */
6296	if (!pVmcs->u64HostRip.s.Hi)
6297	{ /* likely */ }
6298	else
6299	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostRipRsvd);
6300	}
6301	else
6302	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostGuestLongMode);
6303	}
6304	}
6305	else
6306	{
6307	/* Host address-space size for 32-bit CPUs. */
6308	if ( !fGstInLongMode
6309	&& !fHostInLongMode)
6310	{ /* likely */ }
6311	else
6312	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_HostGuestLongModeNoCpu);
6313	}
6314
6315	NOREF(pszInstr);
6316	NOREF(pszFailure);
6317	return VINF_SUCCESS;
6318	}
6319
6320
6321	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
6322	/**
6323	* Checks the EPT pointer VMCS field as part of VM-entry.
6324	*
6325	* @returns VBox status code.
6326	* @param pVCpu The cross context virtual CPU structure.
6327	* @param uEptPtr The EPT pointer to check.
6328	* @param penmVmxDiag Where to store the diagnostic reason on failure (not
6329	* updated on success). Optional, can be NULL.
6330	*/
6331	static int iemVmxVmentryCheckEptPtr(PVMCPUCC pVCpu, uint64_t uEptPtr, VMXVDIAG *penmVmxDiag) RT_NOEXCEPT
6332	{
6333	VMXVDIAG enmVmxDiag;
6334
6335	/* Reserved bits. */
6336	uint8_t const cMaxPhysAddrWidth = IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cMaxPhysAddrWidth;
6337	uint64_t const fValidMask = VMX_EPTP_VALID_MASK & ~(UINT64_MAX << cMaxPhysAddrWidth);
6338	if (uEptPtr & fValidMask)
6339	{
6340	/* Memory Type. */
6341	uint64_t const fCaps = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64EptVpidCaps;
6342	uint8_t const fMemType = RT_BF_GET(uEptPtr, VMX_BF_EPTP_MEMTYPE);
6343	if ( ( fMemType == VMX_EPTP_MEMTYPE_WB
6344	&& RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_MEMTYPE_WB))
6345	\|\| ( fMemType == VMX_EPTP_MEMTYPE_UC
6346	&& RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_MEMTYPE_UC)))
6347	{
6348	/*
6349	* Page walk length (PML4).
6350	* Intel used to specify bit 7 of IA32_VMX_EPT_VPID_CAP as page walk length
6351	* of 5 but that seems to be removed from the latest specs. leaving only PML4
6352	* as the maximum supported page-walk level hence we hardcode it as 3 (1 less than 4)
6353	*/
6354	Assert(RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_PAGE_WALK_LENGTH_4));
6355	if (RT_BF_GET(uEptPtr, VMX_BF_EPTP_PAGE_WALK_LENGTH) == 3)
6356	{
6357	/* Access and dirty bits support in EPT structures. */
6358	if ( !RT_BF_GET(uEptPtr, VMX_BF_EPTP_ACCESS_DIRTY)
6359	\|\| RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_ACCESS_DIRTY))
6360	return VINF_SUCCESS;
6361
6362	enmVmxDiag = kVmxVDiag_Vmentry_EptpAccessDirty;
6363	}
6364	else
6365	enmVmxDiag = kVmxVDiag_Vmentry_EptpPageWalkLength;
6366	}
6367	else
6368	enmVmxDiag = kVmxVDiag_Vmentry_EptpMemType;
6369	}
6370	else
6371	enmVmxDiag = kVmxVDiag_Vmentry_EptpRsvd;
6372
6373	if (penmVmxDiag)
6374	*penmVmxDiag = enmVmxDiag;
6375	return VERR_VMX_VMENTRY_FAILED;
6376	}
6377	#endif
6378
6379
6380	/**
6381	* Checks VMCS controls fields as part of VM-entry.
6382	*
6383	* @returns VBox status code.
6384	* @param pVCpu The cross context virtual CPU structure.
6385	* @param pszInstr The VMX instruction name (for logging purposes).
6386	*
6387	* @remarks This may update secondary-processor based VM-execution control fields
6388	* in the current VMCS if necessary.
6389	*/
6390	static int iemVmxVmentryCheckCtls(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
6391	{
6392	PVMXVVMCS pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6393	const char * const pszFailure = "VMFail";
6394	bool const fVmxTrueMsrs = RT_BOOL(pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Basic & VMX_BF_BASIC_TRUE_CTLS_MASK);
6395
6396	/*
6397	* VM-execution controls.
6398	* See Intel spec. 26.2.1.1 "VM-Execution Control Fields".
6399	*/
6400	{
6401	/* Pin-based VM-execution controls. */
6402	{
6403	VMXCTLSMSR const PinCtls = fVmxTrueMsrs ? pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.TruePinCtls
6404	: pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.PinCtls;
6405	if (!(~pVmcs->u32PinCtls & PinCtls.n.allowed0))
6406	{ /* likely */ }
6407	else
6408	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_PinCtlsDisallowed0);
6409
6410	if (!(pVmcs->u32PinCtls & ~PinCtls.n.allowed1))
6411	{ /* likely */ }
6412	else
6413	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_PinCtlsAllowed1);
6414	}
6415
6416	/* Processor-based VM-execution controls. */
6417	{
6418	VMXCTLSMSR const ProcCtls = fVmxTrueMsrs ? pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.TrueProcCtls
6419	: pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.ProcCtls;
6420	if (!(~pVmcs->u32ProcCtls & ProcCtls.n.allowed0))
6421	{ /* likely */ }
6422	else
6423	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ProcCtlsDisallowed0);
6424
6425	if (!(pVmcs->u32ProcCtls & ~ProcCtls.n.allowed1))
6426	{ /* likely */ }
6427	else
6428	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ProcCtlsAllowed1);
6429	}
6430
6431	/* Secondary processor-based VM-execution controls. */
6432	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_SECONDARY_CTLS)
6433	{
6434	VMXCTLSMSR const ProcCtls2 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.ProcCtls2;
6435	if (!(~pVmcs->u32ProcCtls2 & ProcCtls2.n.allowed0))
6436	{ /* likely */ }
6437	else
6438	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ProcCtls2Disallowed0);
6439
6440	if (!(pVmcs->u32ProcCtls2 & ~ProcCtls2.n.allowed1))
6441	{ /* likely */ }
6442	else
6443	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ProcCtls2Allowed1);
6444	}
6445	else if (pVmcs->u32ProcCtls2)
6446	{
6447	/*
6448	* If the "activate secondary controls" is clear, then the secondary processor-based VM-execution controls
6449	* is treated as 0.
6450	*
6451	* See Intel spec. 26.2.1.1 "VM-Execution Control Fields".
6452	*
6453	* Since this is a rather rare occurrence (only observed for a few VM-entries with Microsoft Hyper-V
6454	* enabled Windows Server 2008 R2 guest), it's not worth changing every place that reads this control to
6455	* also check the "activate secondary controls" bit. Instead, we temporarily save the guest programmed
6456	* control here, zero out the value the rest of our code uses and restore the guest programmed value
6457	* on VM-exit.
6458	*/
6459	pVmcs->u32RestoreProcCtls2 = pVmcs->u32ProcCtls2;
6460	pVmcs->u32ProcCtls2 = 0;
6461	}
6462
6463	/* CR3-target count. */
6464	if (pVmcs->u32Cr3TargetCount <= VMX_V_CR3_TARGET_COUNT)
6465	{ /* likely */ }
6466	else
6467	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_Cr3TargetCount);
6468
6469	/* I/O bitmaps physical addresses. */
6470	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_IO_BITMAPS)
6471	{
6472	RTGCPHYS const GCPhysIoBitmapA = pVmcs->u64AddrIoBitmapA.u;
6473	if ( !(GCPhysIoBitmapA & X86_PAGE_4K_OFFSET_MASK)
6474	&& !(GCPhysIoBitmapA >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6475	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysIoBitmapA))
6476	{ /* likely */ }
6477	else
6478	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrIoBitmapA);
6479
6480	RTGCPHYS const GCPhysIoBitmapB = pVmcs->u64AddrIoBitmapB.u;
6481	if ( !(GCPhysIoBitmapB & X86_PAGE_4K_OFFSET_MASK)
6482	&& !(GCPhysIoBitmapB >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6483	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysIoBitmapB))
6484	{ /* likely */ }
6485	else
6486	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrIoBitmapB);
6487	}
6488
6489	/* MSR bitmap physical address. */
6490	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
6491	{
6492	RTGCPHYS const GCPhysMsrBitmap = pVmcs->u64AddrMsrBitmap.u;
6493	if ( !(GCPhysMsrBitmap & X86_PAGE_4K_OFFSET_MASK)
6494	&& !(GCPhysMsrBitmap >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6495	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysMsrBitmap))
6496	{ /* likely */ }
6497	else
6498	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrMsrBitmap);
6499	}
6500
6501	/* TPR shadow related controls. */
6502	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
6503	{
6504	/* Virtual-APIC page physical address. */
6505	RTGCPHYS const GCPhysVirtApic = pVmcs->u64AddrVirtApic.u;
6506	if ( !(GCPhysVirtApic & X86_PAGE_4K_OFFSET_MASK)
6507	&& !(GCPhysVirtApic >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6508	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVirtApic))
6509	{ /* likely */ }
6510	else
6511	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrVirtApicPage);
6512
6513	/* TPR threshold bits 31:4 MBZ without virtual-interrupt delivery. */
6514	if ( !(pVmcs->u32TprThreshold & ~VMX_TPR_THRESHOLD_MASK)
6515	\|\| (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY))
6516	{ /* likely */ }
6517	else
6518	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_TprThresholdRsvd);
6519
6520	/* The rest done XXX document */
6521	}
6522	else
6523	{
6524	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_X2APIC_MODE)
6525	&& !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_APIC_REG_VIRT)
6526	&& !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY))
6527	{ /* likely */ }
6528	else
6529	{
6530	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_X2APIC_MODE)
6531	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtX2ApicTprShadow);
6532	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_APIC_REG_VIRT)
6533	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ApicRegVirt);
6534	Assert(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY);
6535	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtIntDelivery);
6536	}
6537	}
6538
6539	/* NMI exiting and virtual-NMIs. */
6540	if ( (pVmcs->u32PinCtls & VMX_PIN_CTLS_NMI_EXIT)
6541	\|\| !(pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI))
6542	{ /* likely */ }
6543	else
6544	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtNmi);
6545
6546	/* Virtual-NMIs and NMI-window exiting. */
6547	if ( (pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
6548	\|\| !(pVmcs->u32ProcCtls & VMX_PROC_CTLS_NMI_WINDOW_EXIT))
6549	{ /* likely */ }
6550	else
6551	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_NmiWindowExit);
6552
6553	/* Virtualize APIC accesses. */
6554	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
6555	{
6556	/* APIC-access physical address. */
6557	RTGCPHYS const GCPhysApicAccess = pVmcs->u64AddrApicAccess.u;
6558	if ( !(GCPhysApicAccess & X86_PAGE_4K_OFFSET_MASK)
6559	&& !(GCPhysApicAccess >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6560	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysApicAccess))
6561	{ /* likely */ }
6562	else
6563	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrApicAccess);
6564
6565	/*
6566	* Disallow APIC-access page and virtual-APIC page from being the same address.
6567	* Note! This is not an Intel requirement, but one imposed by our implementation.
6568	* This is done primarily to simplify recursion scenarios while redirecting accesses
6569	* between the APIC-access page and the virtual-APIC page. If any nested hypervisor
6570	* requires this, we can implement it later
6571	*/
6572	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
6573	{
6574	RTGCPHYS const GCPhysVirtApic = pVmcs->u64AddrVirtApic.u;
6575	if (GCPhysVirtApic != GCPhysApicAccess)
6576	{ /* likely */ }
6577	else
6578	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrApicAccessEqVirtApic);
6579	}
6580	}
6581
6582	/* Virtualize-x2APIC mode is mutually exclusive with virtualize-APIC accesses. */
6583	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_X2APIC_MODE)
6584	\|\| !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS))
6585	{ /* likely */ }
6586	else
6587	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtX2ApicVirtApic);
6588
6589	/* Virtual-interrupt delivery requires external interrupt exiting. */
6590	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY)
6591	\|\| (pVmcs->u32PinCtls & VMX_PIN_CTLS_EXT_INT_EXIT))
6592	{ /* likely */ }
6593	else
6594	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtX2ApicVirtApic);
6595
6596	/* VPID. */
6597	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VPID)
6598	\|\| pVmcs->u16Vpid != 0)
6599	{ /* likely */ }
6600	else
6601	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_Vpid);
6602
6603	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
6604	/* Extended-Page-Table Pointer (EPTP). */
6605	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT)
6606	{
6607	VMXVDIAG enmVmxDiag;
6608	int const rc = iemVmxVmentryCheckEptPtr(pVCpu, pVmcs->u64EptPtr.u, &enmVmxDiag);
6609	if (RT_SUCCESS(rc))
6610	{ /* likely */ }
6611	else
6612	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, enmVmxDiag, rc);
6613	}
6614	#else
6615	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT));
6616	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST));
6617	#endif
6618	Assert(!(pVmcs->u32PinCtls & VMX_PIN_CTLS_POSTED_INT)); /* We don't support posted interrupts yet. */
6619	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_PML)); /* We don't support PML yet. */
6620	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VMFUNC)); /* We don't support VM functions yet. */
6621	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT_XCPT_VE)); /* We don't support EPT-violation #VE yet. */
6622	Assert(!(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_TSC_SCALING)); /* We don't support TSC-scaling yet. */
6623
6624	/* VMCS shadowing. */
6625	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING)
6626	{
6627	/* VMREAD-bitmap physical address. */
6628	RTGCPHYS const GCPhysVmreadBitmap = pVmcs->u64AddrVmreadBitmap.u;
6629	if ( !(GCPhysVmreadBitmap & X86_PAGE_4K_OFFSET_MASK)
6630	&& !(GCPhysVmreadBitmap >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6631	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVmreadBitmap))
6632	{ /* likely */ }
6633	else
6634	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrVmreadBitmap);
6635
6636	/* VMWRITE-bitmap physical address. */
6637	RTGCPHYS const GCPhysVmwriteBitmap = pVmcs->u64AddrVmreadBitmap.u;
6638	if ( !(GCPhysVmwriteBitmap & X86_PAGE_4K_OFFSET_MASK)
6639	&& !(GCPhysVmwriteBitmap >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6640	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVmwriteBitmap))
6641	{ /* likely */ }
6642	else
6643	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrVmwriteBitmap);
6644	}
6645	}
6646
6647	/*
6648	* VM-exit controls.
6649	* See Intel spec. 26.2.1.2 "VM-Exit Control Fields".
6650	*/
6651	{
6652	VMXCTLSMSR const ExitCtls = fVmxTrueMsrs ? pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.TrueExitCtls
6653	: pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.ExitCtls;
6654	if (!(~pVmcs->u32ExitCtls & ExitCtls.n.allowed0))
6655	{ /* likely */ }
6656	else
6657	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ExitCtlsDisallowed0);
6658
6659	if (!(pVmcs->u32ExitCtls & ~ExitCtls.n.allowed1))
6660	{ /* likely */ }
6661	else
6662	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_ExitCtlsAllowed1);
6663
6664	/* Save preemption timer without activating it. */
6665	if ( (pVmcs->u32PinCtls & VMX_PIN_CTLS_PREEMPT_TIMER)
6666	\|\| !(pVmcs->u32ProcCtls & VMX_EXIT_CTLS_SAVE_PREEMPT_TIMER))
6667	{ /* likely */ }
6668	else
6669	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_SavePreemptTimer);
6670
6671	/* VM-exit MSR-store count and VM-exit MSR-store area address. */
6672	if (pVmcs->u32ExitMsrStoreCount)
6673	{
6674	if ( !(pVmcs->u64AddrExitMsrStore.u & VMX_AUTOMSR_OFFSET_MASK)
6675	&& !(pVmcs->u64AddrExitMsrStore.u >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6676	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), pVmcs->u64AddrExitMsrStore.u))
6677	{ /* likely */ }
6678	else
6679	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrExitMsrStore);
6680	}
6681
6682	/* VM-exit MSR-load count and VM-exit MSR-load area address. */
6683	if (pVmcs->u32ExitMsrLoadCount)
6684	{
6685	if ( !(pVmcs->u64AddrExitMsrLoad.u & VMX_AUTOMSR_OFFSET_MASK)
6686	&& !(pVmcs->u64AddrExitMsrLoad.u >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6687	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), pVmcs->u64AddrExitMsrLoad.u))
6688	{ /* likely */ }
6689	else
6690	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrExitMsrLoad);
6691	}
6692	}
6693
6694	/*
6695	* VM-entry controls.
6696	* See Intel spec. 26.2.1.3 "VM-Entry Control Fields".
6697	*/
6698	{
6699	VMXCTLSMSR const EntryCtls = fVmxTrueMsrs ? pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.TrueEntryCtls
6700	: pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.EntryCtls;
6701	if (!(~pVmcs->u32EntryCtls & EntryCtls.n.allowed0))
6702	{ /* likely */ }
6703	else
6704	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryCtlsDisallowed0);
6705
6706	if (!(pVmcs->u32EntryCtls & ~EntryCtls.n.allowed1))
6707	{ /* likely */ }
6708	else
6709	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryCtlsAllowed1);
6710
6711	/* Event injection. */
6712	uint32_t const uIntInfo = pVmcs->u32EntryIntInfo;
6713	if (RT_BF_GET(uIntInfo, VMX_BF_ENTRY_INT_INFO_VALID))
6714	{
6715	/* Type and vector. */
6716	uint8_t const uType = RT_BF_GET(uIntInfo, VMX_BF_ENTRY_INT_INFO_TYPE);
6717	uint8_t const uVector = RT_BF_GET(uIntInfo, VMX_BF_ENTRY_INT_INFO_VECTOR);
6718	uint8_t const uRsvd = RT_BF_GET(uIntInfo, VMX_BF_ENTRY_INT_INFO_RSVD_12_30);
6719	if ( !uRsvd
6720	&& VMXIsEntryIntInfoTypeValid(IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxMonitorTrapFlag, uType)
6721	&& VMXIsEntryIntInfoVectorValid(uVector, uType))
6722	{ /* likely */ }
6723	else
6724	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryIntInfoTypeVecRsvd);
6725
6726	/* Exception error code. */
6727	if (RT_BF_GET(uIntInfo, VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID))
6728	{
6729	/* Delivery possible only in Unrestricted-guest mode when CR0.PE is set. */
6730	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST)
6731	\|\| (pVmcs->u64GuestCr0.s.Lo & X86_CR0_PE))
6732	{ /* likely */ }
6733	else
6734	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryIntInfoErrCodePe);
6735
6736	/* Exceptions that provide an error code. */
6737	if ( uType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
6738	&& ( uVector == X86_XCPT_DF
6739	\|\| uVector == X86_XCPT_TS
6740	\|\| uVector == X86_XCPT_NP
6741	\|\| uVector == X86_XCPT_SS
6742	\|\| uVector == X86_XCPT_GP
6743	\|\| uVector == X86_XCPT_PF
6744	\|\| uVector == X86_XCPT_AC))
6745	{ /* likely */ }
6746	else
6747	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryIntInfoErrCodeVec);
6748
6749	/* Exception error-code reserved bits. */
6750	if (!(pVmcs->u32EntryXcptErrCode & ~VMX_ENTRY_INT_XCPT_ERR_CODE_VALID_MASK))
6751	{ /* likely */ }
6752	else
6753	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryXcptErrCodeRsvd);
6754
6755	/* Injecting a software interrupt, software exception or privileged software exception. */
6756	if ( uType == VMX_ENTRY_INT_INFO_TYPE_SW_INT
6757	\|\| uType == VMX_ENTRY_INT_INFO_TYPE_SW_XCPT
6758	\|\| uType == VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT)
6759	{
6760	/* Instruction length must be in the range 0-15. */
6761	if (pVmcs->u32EntryInstrLen <= VMX_ENTRY_INSTR_LEN_MAX)
6762	{ /* likely */ }
6763	else
6764	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryInstrLen);
6765
6766	/* However, instruction length of 0 is allowed only when its CPU feature is present. */
6767	if ( pVmcs->u32EntryInstrLen != 0
6768	\|\| IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxEntryInjectSoftInt)
6769	{ /* likely */ }
6770	else
6771	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_EntryInstrLenZero);
6772	}
6773	}
6774	}
6775
6776	/* VM-entry MSR-load count and VM-entry MSR-load area address. */
6777	if (pVmcs->u32EntryMsrLoadCount)
6778	{
6779	if ( !(pVmcs->u64AddrEntryMsrLoad.u & VMX_AUTOMSR_OFFSET_MASK)
6780	&& !(pVmcs->u64AddrEntryMsrLoad.u >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth)
6781	&& PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), pVmcs->u64AddrEntryMsrLoad.u))
6782	{ /* likely */ }
6783	else
6784	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrEntryMsrLoad);
6785	}
6786
6787	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_ENTRY_TO_SMM)); /* We don't support SMM yet. */
6788	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_DEACTIVATE_DUAL_MON)); /* We don't support dual-monitor treatment yet. */
6789	}
6790
6791	NOREF(pszInstr);
6792	NOREF(pszFailure);
6793	return VINF_SUCCESS;
6794	}
6795
6796
6797	/**
6798	* Loads the guest control registers, debug register and some MSRs as part of
6799	* VM-entry.
6800	*
6801	* @param pVCpu The cross context virtual CPU structure.
6802	*/
6803	static void iemVmxVmentryLoadGuestControlRegsMsrs(PVMCPUCC pVCpu) RT_NOEXCEPT
6804	{
6805	/*
6806	* Load guest control registers, debug registers and MSRs.
6807	* See Intel spec. 26.3.2.1 "Loading Guest Control Registers, Debug Registers and MSRs".
6808	*/
6809	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6810
6811	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0);
6812	uint64_t const uGstCr0 = (pVmcs->u64GuestCr0.u & ~VMX_ENTRY_GUEST_CR0_IGNORE_MASK)
6813	\| (pVCpu->cpum.GstCtx.cr0 & VMX_ENTRY_GUEST_CR0_IGNORE_MASK);
6814	pVCpu->cpum.GstCtx.cr0 = uGstCr0;
6815	pVCpu->cpum.GstCtx.cr4 = pVmcs->u64GuestCr4.u;
6816	pVCpu->cpum.GstCtx.cr3 = pVmcs->u64GuestCr3.u;
6817
6818	if (pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
6819	pVCpu->cpum.GstCtx.dr[7] = (pVmcs->u64GuestDr7.u & ~VMX_ENTRY_GUEST_DR7_MBZ_MASK) \| VMX_ENTRY_GUEST_DR7_MB1_MASK;
6820
6821	pVCpu->cpum.GstCtx.SysEnter.eip = pVmcs->u64GuestSysenterEip.s.Lo;
6822	pVCpu->cpum.GstCtx.SysEnter.esp = pVmcs->u64GuestSysenterEsp.s.Lo;
6823	pVCpu->cpum.GstCtx.SysEnter.cs = pVmcs->u32GuestSysenterCS;
6824
6825	if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLongMode)
6826	{
6827	/* FS base and GS base are loaded while loading the rest of the guest segment registers. */
6828
6829	/* EFER MSR. */
6830	if (!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_EFER_MSR))
6831	{
6832	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_EFER);
6833	uint64_t const uHostEfer = pVCpu->cpum.GstCtx.msrEFER;
6834	bool const fGstInLongMode = RT_BOOL(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
6835	bool const fGstPaging = RT_BOOL(uGstCr0 & X86_CR0_PG);
6836	if (fGstInLongMode)
6837	{
6838	/* If the nested-guest is in long mode, LMA and LME are both set. */
6839	Assert(fGstPaging);
6840	pVCpu->cpum.GstCtx.msrEFER = uHostEfer \| (MSR_K6_EFER_LMA \| MSR_K6_EFER_LME);
6841	}
6842	else
6843	{
6844	/*
6845	* If the nested-guest is outside long mode:
6846	* - With paging: LMA is cleared, LME is cleared.
6847	* - Without paging: LMA is cleared, LME is left unmodified.
6848	*/
6849	uint64_t const fLmaLmeMask = MSR_K6_EFER_LMA \| (fGstPaging ? MSR_K6_EFER_LME : 0);
6850	pVCpu->cpum.GstCtx.msrEFER = uHostEfer & ~fLmaLmeMask;
6851	}
6852	}
6853	/* else: see below. */
6854	}
6855
6856	/* PAT MSR. */
6857	if (pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PAT_MSR)
6858	pVCpu->cpum.GstCtx.msrPAT = pVmcs->u64GuestPatMsr.u;
6859
6860	/* EFER MSR. */
6861	if (pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_EFER_MSR)
6862	pVCpu->cpum.GstCtx.msrEFER = pVmcs->u64GuestEferMsr.u;
6863
6864	/* We don't support IA32_PERF_GLOBAL_CTRL MSR yet. */
6865	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PERF_MSR));
6866
6867	/* We don't support IA32_BNDCFGS MSR yet. */
6868	Assert(!(pVmcs->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_BNDCFGS_MSR));
6869
6870	/* Nothing to do for SMBASE register - We don't support SMM yet. */
6871	}
6872
6873
6874	/**
6875	* Loads the guest segment registers, GDTR, IDTR, LDTR and TR as part of VM-entry.
6876	*
6877	* @param pVCpu The cross context virtual CPU structure.
6878	*/
6879	static void iemVmxVmentryLoadGuestSegRegs(PVMCPUCC pVCpu) RT_NOEXCEPT
6880	{
6881	/*
6882	* Load guest segment registers, GDTR, IDTR, LDTR and TR.
6883	* See Intel spec. 26.3.2.2 "Loading Guest Segment Registers and Descriptor-Table Registers".
6884	*/
6885	/* CS, SS, ES, DS, FS, GS. */
6886	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6887	for (unsigned iSegReg = 0; iSegReg < X86_SREG_COUNT; iSegReg++)
6888	{
6889	PCPUMSELREG pGstSelReg = &pVCpu->cpum.GstCtx.aSRegs[iSegReg];
6890	CPUMSELREG VmcsSelReg;
6891	int rc = iemVmxVmcsGetGuestSegReg(pVmcs, iSegReg, &VmcsSelReg);
6892	AssertRC(rc); NOREF(rc);
6893	if (!(VmcsSelReg.Attr.u & X86DESCATTR_UNUSABLE))
6894	{
6895	pGstSelReg->Sel = VmcsSelReg.Sel;
6896	pGstSelReg->ValidSel = VmcsSelReg.Sel;
6897	pGstSelReg->fFlags = CPUMSELREG_FLAGS_VALID;
6898	pGstSelReg->u64Base = VmcsSelReg.u64Base;
6899	pGstSelReg->u32Limit = VmcsSelReg.u32Limit;
6900	pGstSelReg->Attr.u = VmcsSelReg.Attr.u;
6901	}
6902	else
6903	{
6904	pGstSelReg->Sel = VmcsSelReg.Sel;
6905	pGstSelReg->ValidSel = VmcsSelReg.Sel;
6906	pGstSelReg->fFlags = CPUMSELREG_FLAGS_VALID;
6907	switch (iSegReg)
6908	{
6909	case X86_SREG_CS:
6910	pGstSelReg->u64Base = VmcsSelReg.u64Base;
6911	pGstSelReg->u32Limit = VmcsSelReg.u32Limit;
6912	pGstSelReg->Attr.u = VmcsSelReg.Attr.u;
6913	break;
6914
6915	case X86_SREG_SS:
6916	pGstSelReg->u64Base = VmcsSelReg.u64Base & UINT32_C(0xfffffff0);
6917	pGstSelReg->u32Limit = 0;
6918	pGstSelReg->Attr.u = (VmcsSelReg.Attr.u & X86DESCATTR_DPL) \| X86DESCATTR_D \| X86DESCATTR_UNUSABLE;
6919	break;
6920
6921	case X86_SREG_ES:
6922	case X86_SREG_DS:
6923	pGstSelReg->u64Base = 0;
6924	pGstSelReg->u32Limit = 0;
6925	pGstSelReg->Attr.u = X86DESCATTR_UNUSABLE;
6926	break;
6927
6928	case X86_SREG_FS:
6929	case X86_SREG_GS:
6930	pGstSelReg->u64Base = VmcsSelReg.u64Base;
6931	pGstSelReg->u32Limit = 0;
6932	pGstSelReg->Attr.u = X86DESCATTR_UNUSABLE;
6933	break;
6934	}
6935	Assert(pGstSelReg->Attr.n.u1Unusable);
6936	}
6937	}
6938
6939	/* LDTR. */
6940	pVCpu->cpum.GstCtx.ldtr.Sel = pVmcs->GuestLdtr;
6941	pVCpu->cpum.GstCtx.ldtr.ValidSel = pVmcs->GuestLdtr;
6942	pVCpu->cpum.GstCtx.ldtr.fFlags = CPUMSELREG_FLAGS_VALID;
6943	if (!(pVmcs->u32GuestLdtrAttr & X86DESCATTR_UNUSABLE))
6944	{
6945	pVCpu->cpum.GstCtx.ldtr.u64Base = pVmcs->u64GuestLdtrBase.u;
6946	pVCpu->cpum.GstCtx.ldtr.u32Limit = pVmcs->u32GuestLdtrLimit;
6947	pVCpu->cpum.GstCtx.ldtr.Attr.u = pVmcs->u32GuestLdtrAttr;
6948	}
6949	else
6950	{
6951	pVCpu->cpum.GstCtx.ldtr.u64Base = 0;
6952	pVCpu->cpum.GstCtx.ldtr.u32Limit = 0;
6953	pVCpu->cpum.GstCtx.ldtr.Attr.u = X86DESCATTR_UNUSABLE;
6954	}
6955
6956	/* TR. */
6957	Assert(!(pVmcs->u32GuestTrAttr & X86DESCATTR_UNUSABLE));
6958	pVCpu->cpum.GstCtx.tr.Sel = pVmcs->GuestTr;
6959	pVCpu->cpum.GstCtx.tr.ValidSel = pVmcs->GuestTr;
6960	pVCpu->cpum.GstCtx.tr.fFlags = CPUMSELREG_FLAGS_VALID;
6961	pVCpu->cpum.GstCtx.tr.u64Base = pVmcs->u64GuestTrBase.u;
6962	pVCpu->cpum.GstCtx.tr.u32Limit = pVmcs->u32GuestTrLimit;
6963	pVCpu->cpum.GstCtx.tr.Attr.u = pVmcs->u32GuestTrAttr;
6964
6965	/* GDTR. */
6966	pVCpu->cpum.GstCtx.gdtr.cbGdt = pVmcs->u32GuestGdtrLimit;
6967	pVCpu->cpum.GstCtx.gdtr.pGdt = pVmcs->u64GuestGdtrBase.u;
6968
6969	/* IDTR. */
6970	pVCpu->cpum.GstCtx.idtr.cbIdt = pVmcs->u32GuestIdtrLimit;
6971	pVCpu->cpum.GstCtx.idtr.pIdt = pVmcs->u64GuestIdtrBase.u;
6972	}
6973
6974
6975	/**
6976	* Loads the guest MSRs from the VM-entry MSR-load area as part of VM-entry.
6977	*
6978	* @returns VBox status code.
6979	* @param pVCpu The cross context virtual CPU structure.
6980	* @param pszInstr The VMX instruction name (for logging purposes).
6981	*/
6982	static int iemVmxVmentryLoadGuestAutoMsrs(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
6983	{
6984	/*
6985	* Load guest MSRs.
6986	* See Intel spec. 26.4 "Loading MSRs".
6987	*/
6988	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
6989	const char *const pszFailure = "VM-exit";
6990
6991	/*
6992	* The VM-entry MSR-load area address need not be a valid guest-physical address if the
6993	* VM-entry MSR load count is 0. If this is the case, bail early without reading it.
6994	* See Intel spec. 24.8.2 "VM-Entry Controls for MSRs".
6995	*/
6996	uint32_t const cMsrs = RT_MIN(pVmcs->u32EntryMsrLoadCount, RT_ELEMENTS(pVCpu->cpum.GstCtx.hwvirt.vmx.aEntryMsrLoadArea));
6997	if (!cMsrs)
6998	return VINF_SUCCESS;
6999
7000	/*
7001	* Verify the MSR auto-load count. Physical CPUs can behave unpredictably if the count is
7002	* exceeded including possibly raising #MC exceptions during VMX transition. Our
7003	* implementation shall fail VM-entry with an VMX_EXIT_ERR_MSR_LOAD VM-exit.
7004	*/
7005	bool const fIsMsrCountValid = iemVmxIsAutoMsrCountValid(pVCpu, cMsrs);
7006	if (fIsMsrCountValid)
7007	{ /* likely */ }
7008	else
7009	{
7010	iemVmxVmcsSetExitQual(pVCpu, VMX_V_AUTOMSR_AREA_SIZE / sizeof(VMXAUTOMSR));
7011	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_MsrLoadCount);
7012	}
7013
7014	RTGCPHYS const GCPhysVmEntryMsrLoadArea = pVmcs->u64AddrEntryMsrLoad.u;
7015	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.aEntryMsrLoadArea[0],
7016	GCPhysVmEntryMsrLoadArea, cMsrs * sizeof(VMXAUTOMSR));
7017	if (RT_SUCCESS(rc))
7018	{
7019	PCVMXAUTOMSR pMsr = &pVCpu->cpum.GstCtx.hwvirt.vmx.aEntryMsrLoadArea[0];
7020	for (uint32_t idxMsr = 0; idxMsr < cMsrs; idxMsr++, pMsr++)
7021	{
7022	if ( !pMsr->u32Reserved
7023	&& pMsr->u32Msr != MSR_K8_FS_BASE
7024	&& pMsr->u32Msr != MSR_K8_GS_BASE
7025	&& pMsr->u32Msr != MSR_K6_EFER
7026	&& pMsr->u32Msr != MSR_IA32_SMM_MONITOR_CTL
7027	&& pMsr->u32Msr >> 8 != MSR_IA32_X2APIC_START >> 8)
7028	{
7029	VBOXSTRICTRC rcStrict = CPUMSetGuestMsr(pVCpu, pMsr->u32Msr, pMsr->u64Value);
7030	if (rcStrict == VINF_SUCCESS)
7031	continue;
7032
7033	/*
7034	* If we're in ring-0, we cannot handle returns to ring-3 at this point and continue VM-entry.
7035	* If any nested hypervisor loads MSRs that require ring-3 handling, we cause a VM-entry failure
7036	* recording the MSR index in the Exit qualification (as per the Intel spec.) and indicated
7037	* further by our own, specific diagnostic code. Later, we can try implement handling of the
7038	* MSR in ring-0 if possible, or come up with a better, generic solution.
7039	*/
7040	iemVmxVmcsSetExitQual(pVCpu, idxMsr);
7041	VMXVDIAG const enmDiag = rcStrict == VINF_CPUM_R3_MSR_WRITE
7042	? kVmxVDiag_Vmentry_MsrLoadRing3
7043	: kVmxVDiag_Vmentry_MsrLoad;
7044	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, enmDiag);
7045	}
7046	else
7047	{
7048	iemVmxVmcsSetExitQual(pVCpu, idxMsr);
7049	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_MsrLoadRsvd);
7050	}
7051	}
7052	}
7053	else
7054	{
7055	AssertMsgFailed(("%s: Failed to read MSR auto-load area at %#RGp, rc=%Rrc\n", pszInstr, GCPhysVmEntryMsrLoadArea, rc));
7056	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_MsrLoadPtrReadPhys, rc);
7057	}
7058
7059	NOREF(pszInstr);
7060	NOREF(pszFailure);
7061	return VINF_SUCCESS;
7062	}
7063
7064
7065	/**
7066	* Loads the guest-state non-register state as part of VM-entry.
7067	*
7068	* @returns VBox status code.
7069	* @param pVCpu The cross context virtual CPU structure.
7070	* @param pszInstr The VMX instruction name (for logging purposes).
7071	*
7072	* @remarks This must be called only after loading the nested-guest register state
7073	* (especially nested-guest RIP).
7074	*/
7075	static int iemVmxVmentryLoadGuestNonRegState(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7076	{
7077	/*
7078	* Load guest non-register state.
7079	* See Intel spec. 26.6 "Special Features of VM Entry"
7080	*/
7081	const char *const pszFailure = "VM-exit";
7082	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7083
7084	/*
7085	* If VM-entry is not vectoring, block-by-STI and block-by-MovSS state must be loaded.
7086	* If VM-entry is vectoring, there is no block-by-STI or block-by-MovSS.
7087	*
7088	* See Intel spec. 26.6.1 "Interruptibility State".
7089	*/
7090	bool const fEntryVectoring = VMXIsVmentryVectoring(pVmcs->u32EntryIntInfo, NULL /* puEntryIntInfoType */);
7091	if ( !fEntryVectoring
7092	&& (pVmcs->u32GuestIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS)))
7093	CPUMSetInInterruptShadowEx(&pVCpu->cpum.GstCtx, pVmcs->u64GuestRip.u);
7094	else
7095	Assert(!CPUMIsInInterruptShadow(&pVCpu->cpum.GstCtx));
7096
7097	/* NMI blocking. */
7098	if (pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI)
7099	{
7100	if (pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
7101	pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking = true;
7102	else
7103	{
7104	pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking = false;
7105	CPUMSetInterruptInhibitingByNmi(&pVCpu->cpum.GstCtx);
7106	}
7107	}
7108	else
7109	pVCpu->cpum.GstCtx.hwvirt.vmx.fVirtNmiBlocking = false;
7110
7111	/* SMI blocking is irrelevant. We don't support SMIs yet. */
7112
7113	/*
7114	* Set PGM's copy of the EPT pointer.
7115	* The EPTP has already been validated while checking guest state.
7116	*
7117	* It is important to do this prior to mapping PAE PDPTEs (below).
7118	*/
7119	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT)
7120	PGMSetGuestEptPtr(pVCpu, pVmcs->u64EptPtr.u);
7121
7122	/*
7123	* Load the guest's PAE PDPTEs.
7124	*/
7125	if (!iemVmxVmcsIsGuestPaePagingEnabled(pVmcs))
7126	{
7127	/*
7128	* When PAE paging is not used we clear the PAE PDPTEs for safety
7129	* in case we might be switching from a PAE host to a non-PAE guest.
7130	*/
7131	pVCpu->cpum.GstCtx.aPaePdpes[0].u = 0;
7132	pVCpu->cpum.GstCtx.aPaePdpes[1].u = 0;
7133	pVCpu->cpum.GstCtx.aPaePdpes[2].u = 0;
7134	pVCpu->cpum.GstCtx.aPaePdpes[3].u = 0;
7135	}
7136	else if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_EPT)
7137	{
7138	/*
7139	* With EPT and the nested-guest using PAE paging, we've already validated the PAE PDPTEs
7140	* while checking the guest state. We can load them into the nested-guest CPU state now.
7141	* They'll later be used while mapping CR3 and the PAE PDPTEs.
7142	*/
7143	pVCpu->cpum.GstCtx.aPaePdpes[0].u = pVmcs->u64GuestPdpte0.u;
7144	pVCpu->cpum.GstCtx.aPaePdpes[1].u = pVmcs->u64GuestPdpte1.u;
7145	pVCpu->cpum.GstCtx.aPaePdpes[2].u = pVmcs->u64GuestPdpte2.u;
7146	pVCpu->cpum.GstCtx.aPaePdpes[3].u = pVmcs->u64GuestPdpte3.u;
7147	}
7148	else
7149	{
7150	/*
7151	* Without EPT and the nested-guest using PAE paging, we must load the PAE PDPTEs
7152	* referenced by CR3. This involves loading (and mapping) CR3 and validating them now.
7153	*/
7154	int const rc = PGMGstMapPaePdpesAtCr3(pVCpu, pVmcs->u64GuestCr3.u);
7155	if (RT_SUCCESS(rc))
7156	{ /* likely */ }
7157	else
7158	{
7159	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_PDPTE);
7160	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_GuestPdpte, rc);
7161	}
7162	}
7163
7164	/* VPID is irrelevant. We don't support VPID yet. */
7165
7166	/* Clear address-range monitoring. */
7167	EMMonitorWaitClear(pVCpu);
7168
7169	return VINF_SUCCESS;
7170	}
7171
7172
7173	/**
7174	* Loads the guest VMCS referenced state (such as MSR bitmaps, I/O bitmaps etc).
7175	*
7176	* @param pVCpu The cross context virtual CPU structure.
7177	* @param pszInstr The VMX instruction name (for logging purposes).
7178	*
7179	* @remarks This assumes various VMCS related data structure pointers have already
7180	* been verified prior to calling this function.
7181	*/
7182	static int iemVmxVmentryLoadGuestVmcsRefState(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7183	{
7184	const char *const pszFailure = "VM-exit";
7185	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7186
7187	/*
7188	* Virtualize APIC accesses.
7189	*/
7190	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
7191	{
7192	/* APIC-access physical address. */
7193	RTGCPHYS const GCPhysApicAccess = pVmcs->u64AddrApicAccess.u;
7194
7195	/*
7196	* Register the handler for the APIC-access page.
7197	*
7198	* We don't deregister the APIC-access page handler during the VM-exit as a different
7199	* nested-VCPU might be using the same guest-physical address for its APIC-access page.
7200	*
7201	* We leave the page registered until the first access that happens outside VMX non-root
7202	* mode. Guest software is allowed to access structures such as the APIC-access page
7203	* only when no logical processor with a current VMCS references it in VMX non-root mode,
7204	* otherwise it can lead to unpredictable behavior including guest triple-faults.
7205	*
7206	* See Intel spec. 24.11.4 "Software Access to Related Structures".
7207	*/
7208	/** @todo r=bird: The lazy deregistration of the page is potentially slightly
7209	* problematic, as the guest may cause us to create lots of access
7210	* handler entries. However, any slowdown or similar effects should
7211	* only ever affect the guest itself, so not a big issue. Though, I
7212	* wish there was most recently used approach or something to tracking
7213	* these... */
7214	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
7215	int rc = PGMHandlerPhysicalRegisterVmxApicAccessPage(pVM, GCPhysApicAccess, pVM->iem.s.hVmxApicAccessPage);
7216	if (RT_SUCCESS(rc))
7217	{ /* likely */ }
7218	else
7219	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_AddrApicAccessHandlerReg, rc);
7220	}
7221
7222	/*
7223	* VMCS shadowing.
7224	*/
7225	if (pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING)
7226	{
7227	/* Read the VMREAD-bitmap. */
7228	RTGCPHYS const GCPhysVmreadBitmap = pVmcs->u64AddrVmreadBitmap.u;
7229	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.abVmreadBitmap[0],
7230	GCPhysVmreadBitmap, sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.abVmreadBitmap));
7231	if (RT_SUCCESS(rc))
7232	{ /* likely */ }
7233	else
7234	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmreadBitmapPtrReadPhys, rc);
7235
7236	/* Read the VMWRITE-bitmap. */
7237	RTGCPHYS const GCPhysVmwriteBitmap = pVmcs->u64AddrVmwriteBitmap.u;
7238	rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.abVmwriteBitmap[0],
7239	GCPhysVmwriteBitmap, sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.abVmwriteBitmap));
7240	if (RT_SUCCESS(rc))
7241	{ /* likely */ }
7242	else
7243	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmwriteBitmapPtrReadPhys, rc);
7244	}
7245
7246	/*
7247	* I/O bitmaps.
7248	*/
7249	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_IO_BITMAPS)
7250	{
7251	/* Read the IO bitmap A. */
7252	RTGCPHYS const GCPhysIoBitmapA = pVmcs->u64AddrIoBitmapA.u;
7253	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.abIoBitmap[0],
7254	GCPhysIoBitmapA, VMX_V_IO_BITMAP_A_SIZE);
7255	if (RT_SUCCESS(rc))
7256	{ /* likely */ }
7257	else
7258	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_IoBitmapAPtrReadPhys, rc);
7259
7260	/* Read the IO bitmap B. */
7261	RTGCPHYS const GCPhysIoBitmapB = pVmcs->u64AddrIoBitmapB.u;
7262	rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.abIoBitmap[VMX_V_IO_BITMAP_A_SIZE],
7263	GCPhysIoBitmapB, VMX_V_IO_BITMAP_B_SIZE);
7264	if (RT_SUCCESS(rc))
7265	{ /* likely */ }
7266	else
7267	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_IoBitmapBPtrReadPhys, rc);
7268	}
7269
7270	/*
7271	* TPR shadow and Virtual-APIC page.
7272	*/
7273	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
7274	{
7275	/* Verify TPR threshold and VTPR when both virtualize-APIC accesses and virtual-interrupt delivery aren't used. */
7276	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
7277	&& !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_INT_DELIVERY))
7278	{
7279	/* Read the VTPR from the virtual-APIC page. */
7280	RTGCPHYS const GCPhysVirtApic = pVmcs->u64AddrVirtApic.u;
7281	uint8_t u8VTpr;
7282	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &u8VTpr, GCPhysVirtApic + XAPIC_OFF_TPR, sizeof(u8VTpr));
7283	if (RT_SUCCESS(rc))
7284	{ /* likely */ }
7285	else
7286	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VirtApicPagePtrReadPhys, rc);
7287
7288	/* Bits 3:0 of the TPR-threshold must not be greater than bits 7:4 of VTPR. */
7289	if ((uint8_t)RT_BF_GET(pVmcs->u32TprThreshold, VMX_BF_TPR_THRESHOLD_TPR) <= (u8VTpr & 0xf0))
7290	{ /* likely */ }
7291	else
7292	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_TprThresholdVTpr);
7293	}
7294	}
7295
7296	/*
7297	* VMCS link pointer.
7298	*/
7299	if (pVmcs->u64VmcsLinkPtr.u != UINT64_C(0xffffffffffffffff))
7300	{
7301	/* Read the VMCS-link pointer from guest memory. */
7302	RTGCPHYS const GCPhysShadowVmcs = pVmcs->u64VmcsLinkPtr.u;
7303	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs,
7304	GCPhysShadowVmcs, sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs));
7305	if (RT_SUCCESS(rc))
7306	{ /* likely */ }
7307	else
7308	{
7309	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_VMCS_LINK_PTR);
7310	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmcsLinkPtrReadPhys, rc);
7311	}
7312
7313	/* Verify the VMCS revision specified by the guest matches what we reported to the guest. */
7314	if (pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs.u32VmcsRevId.n.u31RevisionId == VMX_V_VMCS_REVISION_ID)
7315	{ /* likely */ }
7316	else
7317	{
7318	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_VMCS_LINK_PTR);
7319	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmcsLinkPtrRevId);
7320	}
7321
7322	/* Verify the shadow bit is set if VMCS shadowing is enabled . */
7323	if ( !(pVmcs->u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING)
7324	\|\| pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs.u32VmcsRevId.n.fIsShadowVmcs)
7325	{ /* likely */ }
7326	else
7327	{
7328	iemVmxVmcsSetExitQual(pVCpu, VMX_ENTRY_FAIL_QUAL_VMCS_LINK_PTR);
7329	IEM_VMX_VMENTRY_FAILED_RET(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_VmcsLinkPtrShadow);
7330	}
7331
7332	/* Update our cache of the guest physical address of the shadow VMCS. */
7333	pVCpu->cpum.GstCtx.hwvirt.vmx.GCPhysShadowVmcs = GCPhysShadowVmcs;
7334	}
7335
7336	/*
7337	* MSR bitmap.
7338	*/
7339	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
7340	{
7341	/* Read the MSR bitmap. */
7342	RTGCPHYS const GCPhysMsrBitmap = pVmcs->u64AddrMsrBitmap.u;
7343	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &pVCpu->cpum.GstCtx.hwvirt.vmx.abMsrBitmap[0],
7344	GCPhysMsrBitmap, sizeof(pVCpu->cpum.GstCtx.hwvirt.vmx.abMsrBitmap));
7345	if (RT_SUCCESS(rc))
7346	{ /* likely */ }
7347	else
7348	IEM_VMX_VMENTRY_FAILED_RET_2(pVCpu, pszInstr, pszFailure, kVmxVDiag_Vmentry_MsrBitmapPtrReadPhys, rc);
7349	}
7350
7351	NOREF(pszFailure);
7352	NOREF(pszInstr);
7353	return VINF_SUCCESS;
7354	}
7355
7356
7357	/**
7358	* Loads the guest-state as part of VM-entry.
7359	*
7360	* @returns VBox status code.
7361	* @param pVCpu The cross context virtual CPU structure.
7362	* @param pszInstr The VMX instruction name (for logging purposes).
7363	*
7364	* @remarks This must be done after all the necessary steps prior to loading of
7365	* guest-state (e.g. checking various VMCS state).
7366	*/
7367	static int iemVmxVmentryLoadGuestState(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7368	{
7369	/* Load guest control registers, MSRs (that are directly part of the VMCS). */
7370	iemVmxVmentryLoadGuestControlRegsMsrs(pVCpu);
7371
7372	/* Load guest segment registers. */
7373	iemVmxVmentryLoadGuestSegRegs(pVCpu);
7374
7375	/*
7376	* Load guest RIP, RSP and RFLAGS.
7377	* See Intel spec. 26.3.2.3 "Loading Guest RIP, RSP and RFLAGS".
7378	*/
7379	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7380	pVCpu->cpum.GstCtx.rsp = pVmcs->u64GuestRsp.u;
7381	pVCpu->cpum.GstCtx.rip = pVmcs->u64GuestRip.u;
7382	pVCpu->cpum.GstCtx.rflags.u = pVmcs->u64GuestRFlags.u;
7383
7384	/* Initialize the PAUSE-loop controls as part of VM-entry. */
7385	pVCpu->cpum.GstCtx.hwvirt.vmx.uFirstPauseLoopTick = 0;
7386	pVCpu->cpum.GstCtx.hwvirt.vmx.uPrevPauseTick = 0;
7387
7388	/* Load guest non-register state (such as interrupt shadows, NMI blocking etc). */
7389	int rc = iemVmxVmentryLoadGuestNonRegState(pVCpu, pszInstr);
7390	if (rc == VINF_SUCCESS)
7391	{ /* likely */ }
7392	else
7393	return rc;
7394
7395	/* Load VMX related structures and state referenced by the VMCS. */
7396	rc = iemVmxVmentryLoadGuestVmcsRefState(pVCpu, pszInstr);
7397	if (rc == VINF_SUCCESS)
7398	{ /* likely */ }
7399	else
7400	return rc;
7401
7402	NOREF(pszInstr);
7403	return VINF_SUCCESS;
7404	}
7405
7406
7407	/**
7408	* Returns whether there are is a pending debug exception on VM-entry.
7409	*
7410	* @param pVCpu The cross context virtual CPU structure.
7411	* @param pszInstr The VMX instruction name (for logging purposes).
7412	*/
7413	static bool iemVmxVmentryIsPendingDebugXcpt(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7414	{
7415	/*
7416	* Pending debug exceptions.
7417	* See Intel spec. 26.6.3 "Delivery of Pending Debug Exceptions after VM Entry".
7418	*/
7419	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7420	Assert(pVmcs);
7421
7422	bool fPendingDbgXcpt = RT_BOOL(pVmcs->u64GuestPendingDbgXcpts.u & ( VMX_VMCS_GUEST_PENDING_DEBUG_XCPT_BS
7423	\| VMX_VMCS_GUEST_PENDING_DEBUG_XCPT_EN_BP));
7424	if (fPendingDbgXcpt)
7425	{
7426	uint8_t uEntryIntInfoType;
7427	bool const fEntryVectoring = VMXIsVmentryVectoring(pVmcs->u32EntryIntInfo, &uEntryIntInfoType);
7428	if (fEntryVectoring)
7429	{
7430	switch (uEntryIntInfoType)
7431	{
7432	case VMX_ENTRY_INT_INFO_TYPE_EXT_INT:
7433	case VMX_ENTRY_INT_INFO_TYPE_NMI:
7434	case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT:
7435	case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
7436	fPendingDbgXcpt = false;
7437	break;
7438
7439	case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT:
7440	{
7441	/*
7442	* Whether the pending debug exception for software exceptions other than
7443	* #BP and #OF is delivered after injecting the exception or is discard
7444	* is CPU implementation specific. We will discard them (easier).
7445	*/
7446	uint8_t const uVector = VMX_ENTRY_INT_INFO_VECTOR(pVmcs->u32EntryIntInfo);
7447	if ( uVector != X86_XCPT_BP
7448	&& uVector != X86_XCPT_OF)
7449	fPendingDbgXcpt = false;
7450	RT_FALL_THRU();
7451	}
7452	case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
7453	{
7454	if (!(pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS))
7455	fPendingDbgXcpt = false;
7456	break;
7457	}
7458	}
7459	}
7460	else
7461	{
7462	/*
7463	* When the VM-entry is not vectoring but there is blocking-by-MovSS, whether the
7464	* pending debug exception is held pending or is discarded is CPU implementation
7465	* specific. We will discard them (easier).
7466	*/
7467	if (pVmcs->u32GuestIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS)
7468	fPendingDbgXcpt = false;
7469
7470	/* There's no pending debug exception in the shutdown or wait-for-SIPI state. */
7471	if (pVmcs->u32GuestActivityState & (VMX_VMCS_GUEST_ACTIVITY_SHUTDOWN \| VMX_VMCS_GUEST_ACTIVITY_SIPI_WAIT))
7472	fPendingDbgXcpt = false;
7473	}
7474	}
7475
7476	NOREF(pszInstr);
7477	return fPendingDbgXcpt;
7478	}
7479
7480
7481	/**
7482	* Set up the monitor-trap flag (MTF).
7483	*
7484	* @param pVCpu The cross context virtual CPU structure.
7485	* @param pszInstr The VMX instruction name (for logging purposes).
7486	*/
7487	static void iemVmxVmentrySetupMtf(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7488	{
7489	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7490	Assert(pVmcs);
7491	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_MONITOR_TRAP_FLAG)
7492	{
7493	VMCPU_FF_SET(pVCpu, VMCPU_FF_VMX_MTF);
7494	Log(("%s: Monitor-trap flag set on VM-entry\n", pszInstr));
7495	}
7496	else
7497	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_MTF));
7498	NOREF(pszInstr);
7499	}
7500
7501
7502	/**
7503	* Sets up NMI-window exiting.
7504	*
7505	* @param pVCpu The cross context virtual CPU structure.
7506	* @param pszInstr The VMX instruction name (for logging purposes).
7507	*/
7508	static void iemVmxVmentrySetupNmiWindow(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7509	{
7510	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7511	Assert(pVmcs);
7512	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_NMI_WINDOW_EXIT)
7513	{
7514	Assert(pVmcs->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI);
7515	VMCPU_FF_SET(pVCpu, VMCPU_FF_VMX_NMI_WINDOW);
7516	Log(("%s: NMI-window set on VM-entry\n", pszInstr));
7517	}
7518	else
7519	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_NMI_WINDOW));
7520	NOREF(pszInstr);
7521	}
7522
7523
7524	/**
7525	* Sets up interrupt-window exiting.
7526	*
7527	* @param pVCpu The cross context virtual CPU structure.
7528	* @param pszInstr The VMX instruction name (for logging purposes).
7529	*/
7530	static void iemVmxVmentrySetupIntWindow(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7531	{
7532	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7533	Assert(pVmcs);
7534	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_INT_WINDOW_EXIT)
7535	{
7536	VMCPU_FF_SET(pVCpu, VMCPU_FF_VMX_INT_WINDOW);
7537	Log(("%s: Interrupt-window set on VM-entry\n", pszInstr));
7538	}
7539	else
7540	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_INT_WINDOW));
7541	NOREF(pszInstr);
7542	}
7543
7544
7545	/**
7546	* Set up the VMX-preemption timer.
7547	*
7548	* @param pVCpu The cross context virtual CPU structure.
7549	* @param pszInstr The VMX instruction name (for logging purposes).
7550	*/
7551	static void iemVmxVmentrySetupPreemptTimer(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7552	{
7553	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7554	Assert(pVmcs);
7555	if (pVmcs->u32PinCtls & VMX_PIN_CTLS_PREEMPT_TIMER)
7556	{
7557	/*
7558	* If the timer is 0, we must cause a VM-exit before executing the first
7559	* nested-guest instruction. So we can flag as though the timer has already
7560	* expired and we will check and cause a VM-exit at the right priority elsewhere
7561	* in the code.
7562	*/
7563	uint64_t uEntryTick;
7564	uint32_t const uPreemptTimer = pVmcs->u32PreemptTimer;
7565	if (uPreemptTimer)
7566	{
7567	int rc = CPUMStartGuestVmxPremptTimer(pVCpu, uPreemptTimer, VMX_V_PREEMPT_TIMER_SHIFT, &uEntryTick);
7568	AssertRC(rc);
7569	Log(("%s: VM-entry set up VMX-preemption timer at %#RX64\n", pszInstr, uEntryTick));
7570	}
7571	else
7572	{
7573	uEntryTick = TMCpuTickGetNoCheck(pVCpu);
7574	VMCPU_FF_SET(pVCpu, VMCPU_FF_VMX_PREEMPT_TIMER);
7575	Log(("%s: VM-entry set up VMX-preemption timer at %#RX64 to expire immediately!\n", pszInstr, uEntryTick));
7576	}
7577
7578	pVCpu->cpum.GstCtx.hwvirt.vmx.uEntryTick = uEntryTick;
7579	}
7580	else
7581	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_PREEMPT_TIMER));
7582
7583	NOREF(pszInstr);
7584	}
7585
7586
7587	/**
7588	* Injects an event using TRPM given a VM-entry interruption info and related
7589	* fields.
7590	*
7591	* @param pVCpu The cross context virtual CPU structure.
7592	* @param pszInstr The VMX instruction name (for logging purposes).
7593	* @param uEntryIntInfo The VM-entry interruption info.
7594	* @param uErrCode The error code associated with the event if any.
7595	* @param cbInstr The VM-entry instruction length (for software
7596	* interrupts and software exceptions). Pass 0
7597	* otherwise.
7598	* @param GCPtrFaultAddress The guest CR2 if this is a \#PF event.
7599	*/
7600	static void iemVmxVmentryInjectTrpmEvent(PVMCPUCC pVCpu, const char *pszInstr, uint32_t uEntryIntInfo, uint32_t uErrCode,
7601	uint32_t cbInstr, RTGCUINTPTR GCPtrFaultAddress) RT_NOEXCEPT
7602	{
7603	Assert(VMX_ENTRY_INT_INFO_IS_VALID(uEntryIntInfo));
7604
7605	uint8_t const uType = VMX_ENTRY_INT_INFO_TYPE(uEntryIntInfo);
7606	uint8_t const uVector = VMX_ENTRY_INT_INFO_VECTOR(uEntryIntInfo);
7607	TRPMEVENT const enmTrpmEvent = HMVmxEventTypeToTrpmEventType(uEntryIntInfo);
7608
7609	Assert(uType != VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT);
7610
7611	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrpmEvent);
7612	AssertRC(rc);
7613	Log(("%s: Injecting: vector=%#x type=%#x (%s)\n", pszInstr, uVector, uType, VMXGetEntryIntInfoTypeDesc(uType)));
7614
7615	if (VMX_ENTRY_INT_INFO_IS_ERROR_CODE_VALID(uEntryIntInfo))
7616	{
7617	TRPMSetErrorCode(pVCpu, uErrCode);
7618	Log(("%s: Injecting: err_code=%#x\n", pszInstr, uErrCode));
7619	}
7620
7621	if (VMX_ENTRY_INT_INFO_IS_XCPT_PF(uEntryIntInfo))
7622	{
7623	TRPMSetFaultAddress(pVCpu, GCPtrFaultAddress);
7624	Log(("%s: Injecting: fault_addr=%RGp\n", pszInstr, GCPtrFaultAddress));
7625	}
7626	else
7627	{
7628	switch (uType)
7629	{
7630	case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
7631	TRPMSetTrapDueToIcebp(pVCpu);
7632	Log(("%s: Injecting: icebp\n", pszInstr));
7633	RT_FALL_THRU();
7634	case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
7635	case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT:
7636	TRPMSetInstrLength(pVCpu, cbInstr);
7637	Log(("%s: Injecting: instr_len=%u\n", pszInstr, cbInstr));
7638	break;
7639	}
7640	}
7641
7642	NOREF(pszInstr);
7643	}
7644
7645
7646	/**
7647	* Performs event injection (if any) as part of VM-entry.
7648	*
7649	* @param pVCpu The cross context virtual CPU structure.
7650	* @param pszInstr The VMX instruction name (for logging purposes).
7651	*/
7652	static void iemVmxVmentryInjectEvent(PVMCPUCC pVCpu, const char *pszInstr) RT_NOEXCEPT
7653	{
7654	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7655
7656	/*
7657	* Inject events.
7658	* The event that is going to be made pending for injection is not subject to VMX intercepts,
7659	* thus we flag ignoring of intercepts. However, recursive exceptions if any during delivery
7660	* of the current event -are- subject to intercepts, hence this flag will be flipped during
7661	* the actually delivery of this event.
7662	*
7663	* See Intel spec. 26.5 "Event Injection".
7664	*/
7665	uint32_t const uEntryIntInfo = pVmcs->u32EntryIntInfo;
7666	bool const fEntryIntInfoValid = VMX_ENTRY_INT_INFO_IS_VALID(uEntryIntInfo);
7667
7668	CPUMSetGuestVmxInterceptEvents(&pVCpu->cpum.GstCtx, !fEntryIntInfoValid);
7669	if (fEntryIntInfoValid)
7670	{
7671	if (VMX_ENTRY_INT_INFO_TYPE(uEntryIntInfo) != VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT)
7672	iemVmxVmentryInjectTrpmEvent(pVCpu, pszInstr, uEntryIntInfo, pVmcs->u32EntryXcptErrCode, pVmcs->u32EntryInstrLen,
7673	pVCpu->cpum.GstCtx.cr2);
7674	else
7675	{
7676	Assert(VMX_ENTRY_INT_INFO_VECTOR(uEntryIntInfo) == VMX_ENTRY_INT_INFO_VECTOR_MTF);
7677	VMCPU_FF_SET(pVCpu, VMCPU_FF_VMX_MTF);
7678	}
7679
7680	/*
7681	* We need to clear the VM-entry interruption information field's valid bit on VM-exit.
7682	*
7683	* However, we do it here on VM-entry as well because while it isn't visible to guest
7684	* software until VM-exit, when and if HM looks at the VMCS to continue nested-guest
7685	* execution using hardware-assisted VMX, it will not try to inject the event again.
7686	*
7687	* See Intel spec. 24.8.3 "VM-Entry Controls for Event Injection".
7688	*/
7689	pVmcs->u32EntryIntInfo &= ~VMX_ENTRY_INT_INFO_VALID;
7690	}
7691	else
7692	{
7693	/*
7694	* Inject any pending guest debug exception.
7695	* Unlike injecting events, this #DB injection on VM-entry is subject to #DB VMX intercept.
7696	* See Intel spec. 26.6.3 "Delivery of Pending Debug Exceptions after VM Entry".
7697	*/
7698	bool const fPendingDbgXcpt = iemVmxVmentryIsPendingDebugXcpt(pVCpu, pszInstr);
7699	if (fPendingDbgXcpt)
7700	{
7701	uint32_t const uDbgXcptInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_DB)
7702	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_ENTRY_INT_INFO_TYPE_HW_XCPT)
7703	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7704	iemVmxVmentryInjectTrpmEvent(pVCpu, pszInstr, uDbgXcptInfo, 0 /* uErrCode */, pVmcs->u32EntryInstrLen,
7705	0 /* GCPtrFaultAddress */);
7706	}
7707	}
7708
7709	NOREF(pszInstr);
7710	}
7711
7712
7713	/**
7714	* Initializes all read-only VMCS fields as part of VM-entry.
7715	*
7716	* @param pVCpu The cross context virtual CPU structure.
7717	*/
7718	static void iemVmxVmentryInitReadOnlyFields(PVMCPUCC pVCpu) RT_NOEXCEPT
7719	{
7720	/*
7721	* Any VMCS field which we do not establish on every VM-exit but may potentially
7722	* be used on the VM-exit path of a nested hypervisor -and- is not explicitly
7723	* specified to be undefined, needs to be initialized here.
7724	*
7725	* Thus, it is especially important to clear the Exit qualification field
7726	* since it must be zero for VM-exits where it is not used. Similarly, the
7727	* VM-exit interruption information field's valid bit needs to be cleared for
7728	* the same reasons.
7729	*/
7730	PVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7731	Assert(pVmcs);
7732
7733	/* 16-bit (none currently). */
7734	/* 32-bit. */
7735	pVmcs->u32RoVmInstrError = 0;
7736	pVmcs->u32RoExitReason = 0;
7737	pVmcs->u32RoExitIntInfo = 0;
7738	pVmcs->u32RoExitIntErrCode = 0;
7739	pVmcs->u32RoIdtVectoringInfo = 0;
7740	pVmcs->u32RoIdtVectoringErrCode = 0;
7741	pVmcs->u32RoExitInstrLen = 0;
7742	pVmcs->u32RoExitInstrInfo = 0;
7743
7744	/* 64-bit. */
7745	pVmcs->u64RoGuestPhysAddr.u = 0;
7746
7747	/* Natural-width. */
7748	pVmcs->u64RoExitQual.u = 0;
7749	pVmcs->u64RoIoRcx.u = 0;
7750	pVmcs->u64RoIoRsi.u = 0;
7751	pVmcs->u64RoIoRdi.u = 0;
7752	pVmcs->u64RoIoRip.u = 0;
7753	pVmcs->u64RoGuestLinearAddr.u = 0;
7754	}
7755
7756
7757	/**
7758	* VMLAUNCH/VMRESUME instruction execution worker.
7759	*
7760	* @returns Strict VBox status code.
7761	* @param pVCpu The cross context virtual CPU structure.
7762	* @param cbInstr The instruction length in bytes.
7763	* @param uInstrId The instruction identity (VMXINSTRID_VMLAUNCH or
7764	* VMXINSTRID_VMRESUME).
7765	*
7766	* @remarks Common VMX instruction checks are already expected to by the caller,
7767	* i.e. CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
7768	*/
7769	static VBOXSTRICTRC iemVmxVmlaunchVmresume(PVMCPUCC pVCpu, uint8_t cbInstr, VMXINSTRID uInstrId) RT_NOEXCEPT
7770	{
7771	# if defined(VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM) && !defined(IN_RING3)
7772	RT_NOREF3(pVCpu, cbInstr, uInstrId);
7773	return VINF_EM_RAW_EMULATE_INSTR;
7774	# else
7775	Assert( uInstrId == VMXINSTRID_VMLAUNCH
7776	\|\| uInstrId == VMXINSTRID_VMRESUME);
7777	const char * const pszInstr = uInstrId == VMXINSTRID_VMRESUME ? "vmresume" : "vmlaunch";
7778
7779	/* Nested-guest intercept. */
7780	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
7781	return iemVmxVmexitInstr(pVCpu, uInstrId == VMXINSTRID_VMRESUME ? VMX_EXIT_VMRESUME : VMX_EXIT_VMLAUNCH, cbInstr);
7782
7783	Assert(IEM_VMX_IS_ROOT_MODE(pVCpu));
7784
7785	/*
7786	* Basic VM-entry checks.
7787	* The order of the CPL, current and shadow VMCS and block-by-MovSS are important.
7788	* The checks following that do not have to follow a specific order.
7789	*
7790	* See Intel spec. 26.1 "Basic VM-entry Checks".
7791	*/
7792
7793	/* CPL. */
7794	if (IEM_GET_CPL(pVCpu) == 0)
7795	{ /* likely */ }
7796	else
7797	{
7798	Log(("%s: CPL %u -> #GP(0)\n", pszInstr, IEM_GET_CPL(pVCpu)));
7799	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_Cpl;
7800	return iemRaiseGeneralProtectionFault0(pVCpu);
7801	}
7802
7803	/* Current VMCS valid. */
7804	if (IEM_VMX_HAS_CURRENT_VMCS(pVCpu))
7805	{ /* likely */ }
7806	else
7807	{
7808	Log(("%s: VMCS pointer %#RGp invalid -> VMFailInvalid\n", pszInstr, IEM_VMX_GET_CURRENT_VMCS(pVCpu)));
7809	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_PtrInvalid;
7810	iemVmxVmFailInvalid(pVCpu);
7811	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
7812	}
7813
7814	/* Current VMCS is not a shadow VMCS. */
7815	if (!pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.u32VmcsRevId.n.fIsShadowVmcs)
7816	{ /* likely */ }
7817	else
7818	{
7819	Log(("%s: VMCS pointer %#RGp is a shadow VMCS -> VMFailInvalid\n", pszInstr, IEM_VMX_GET_CURRENT_VMCS(pVCpu)));
7820	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_PtrShadowVmcs;
7821	iemVmxVmFailInvalid(pVCpu);
7822	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
7823	}
7824
7825	/** @todo Distinguish block-by-MovSS from block-by-STI. Currently we
7826	* use block-by-STI here which is not quite correct. */
7827	if (!CPUMIsInInterruptShadowWithUpdate(&pVCpu->cpum.GstCtx))
7828	{ /* likely */ }
7829	else
7830	{
7831	Log(("%s: VM entry with events blocked by MOV SS -> VMFail\n", pszInstr));
7832	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_BlocKMovSS;
7833	iemVmxVmFail(pVCpu, VMXINSTRERR_VMENTRY_BLOCK_MOVSS);
7834	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
7835	}
7836
7837	if (uInstrId == VMXINSTRID_VMLAUNCH)
7838	{
7839	/* VMLAUNCH with non-clear VMCS. */
7840	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.fVmcsState == VMX_V_VMCS_LAUNCH_STATE_CLEAR)
7841	{ /* likely */ }
7842	else
7843	{
7844	Log(("vmlaunch: VMLAUNCH with non-clear VMCS -> VMFail\n"));
7845	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_VmcsClear;
7846	iemVmxVmFail(pVCpu, VMXINSTRERR_VMLAUNCH_NON_CLEAR_VMCS);
7847	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
7848	}
7849	}
7850	else
7851	{
7852	/* VMRESUME with non-launched VMCS. */
7853	if (pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.fVmcsState == VMX_V_VMCS_LAUNCH_STATE_LAUNCHED)
7854	{ /* likely */ }
7855	else
7856	{
7857	Log(("vmresume: VMRESUME with non-launched VMCS -> VMFail\n"));
7858	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmentry_VmcsLaunch;
7859	iemVmxVmFail(pVCpu, VMXINSTRERR_VMRESUME_NON_LAUNCHED_VMCS);
7860	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
7861	}
7862	}
7863
7864	/*
7865	* We are allowed to cache VMCS related data structures (such as I/O bitmaps, MSR bitmaps)
7866	* while entering VMX non-root mode. We do some of this while checking VM-execution
7867	* controls. The nested hypervisor should not make assumptions and cannot expect
7868	* predictable behavior if changes to these structures are made in guest memory while
7869	* executing in VMX non-root mode. As far as VirtualBox is concerned, the guest cannot
7870	* modify them anyway as we cache them in host memory.
7871	*
7872	* See Intel spec. 24.11.4 "Software Access to Related Structures".
7873	*/
7874	Assert(IEM_VMX_HAS_CURRENT_VMCS(pVCpu));
7875
7876	int rc = iemVmxVmentryCheckCtls(pVCpu, pszInstr);
7877	if (RT_SUCCESS(rc))
7878	{
7879	rc = iemVmxVmentryCheckHostState(pVCpu, pszInstr);
7880	if (RT_SUCCESS(rc))
7881	{
7882	/*
7883	* Initialize read-only VMCS fields before VM-entry since we don't update all of them
7884	* for every VM-exit. This needs to be done before invoking a VM-exit (even those
7885	* ones that may occur during VM-entry below).
7886	*/
7887	iemVmxVmentryInitReadOnlyFields(pVCpu);
7888
7889	/*
7890	* Blocking of NMIs need to be restored if VM-entry fails due to invalid-guest state.
7891	* So we save the VMCPU_FF_BLOCK_NMI force-flag here so we can restore it on
7892	* VM-exit when required.
7893	* See Intel spec. 26.7 "VM-entry Failures During or After Loading Guest State"
7894	*/
7895	iemVmxVmentrySaveNmiBlockingFF(pVCpu);
7896
7897	PVMXVVMCS pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
7898	Assert(pVmcs);
7899
7900	rc = iemVmxVmentryCheckGuestState(pVCpu, pszInstr);
7901	if (RT_SUCCESS(rc))
7902	{
7903	/*
7904	* We've now entered nested-guest execution.
7905	*
7906	* It is important do this prior to loading the guest state because
7907	* as part of loading the guest state, PGM (and perhaps other components
7908	* in the future) relies on detecting whether VMX non-root mode has been
7909	* entered.
7910	*/
7911	pVCpu->cpum.GstCtx.hwvirt.vmx.fInVmxNonRootMode = true;
7912
7913	rc = iemVmxVmentryLoadGuestState(pVCpu, pszInstr);
7914	if (RT_SUCCESS(rc))
7915	{
7916	rc = iemVmxVmentryLoadGuestAutoMsrs(pVCpu, pszInstr);
7917	if (RT_SUCCESS(rc))
7918	{
7919	Assert(rc != VINF_CPUM_R3_MSR_WRITE);
7920
7921	/* VMLAUNCH instruction must update the VMCS launch state. */
7922	if (uInstrId == VMXINSTRID_VMLAUNCH)
7923	pVmcs->fVmcsState = VMX_V_VMCS_LAUNCH_STATE_LAUNCHED;
7924
7925	/* Perform the VMX transition (PGM updates). */
7926	VBOXSTRICTRC rcStrict = iemVmxTransition(pVCpu, cbInstr);
7927	if (rcStrict == VINF_SUCCESS)
7928	{ /* likely */ }
7929	else if (RT_SUCCESS(rcStrict))
7930	{
7931	Log3(("%s: iemVmxTransition returns %Rrc -> Setting passup status\n", pszInstr,
7932	VBOXSTRICTRC_VAL(rcStrict)));
7933	rcStrict = iemSetPassUpStatus(pVCpu, rcStrict);
7934	}
7935	else
7936	{
7937	Log3(("%s: iemVmxTransition failed! rc=%Rrc\n", pszInstr, VBOXSTRICTRC_VAL(rcStrict)));
7938	return rcStrict;
7939	}
7940
7941	/* Paranoia. */
7942	Assert(rcStrict == VINF_SUCCESS);
7943
7944	/*
7945	* The priority of potential VM-exits during VM-entry is important.
7946	* The priorities of VM-exits and events are listed from highest
7947	* to lowest as follows:
7948	*
7949	* 1. Event injection.
7950	* 2. Trap on task-switch (T flag set in TSS).
7951	* 3. TPR below threshold / APIC-write.
7952	* 4. SMI, INIT.
7953	* 5. MTF exit.
7954	* 6. Debug-trap exceptions (EFLAGS.TF), pending debug exceptions.
7955	* 7. VMX-preemption timer.
7956	* 9. NMI-window exit.
7957	* 10. NMI injection.
7958	* 11. Interrupt-window exit.
7959	* 12. Virtual-interrupt injection.
7960	* 13. Interrupt injection.
7961	* 14. Process next instruction (fetch, decode, execute).
7962	*/
7963
7964	/* Setup VMX-preemption timer. */
7965	iemVmxVmentrySetupPreemptTimer(pVCpu, pszInstr);
7966
7967	/* Setup monitor-trap flag. */
7968	iemVmxVmentrySetupMtf(pVCpu, pszInstr);
7969
7970	/* Setup NMI-window exiting. */
7971	iemVmxVmentrySetupNmiWindow(pVCpu, pszInstr);
7972
7973	/* Setup interrupt-window exiting. */
7974	iemVmxVmentrySetupIntWindow(pVCpu, pszInstr);
7975
7976	/*
7977	* Inject any event that the nested hypervisor wants to inject.
7978	* Note! We cannot immediately perform the event injection here as we may have
7979	* pending PGM operations to perform due to switching page tables and/or
7980	* mode.
7981	*/
7982	iemVmxVmentryInjectEvent(pVCpu, pszInstr);
7983
7984	# if defined(VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM) && defined(IN_RING3)
7985	/* Reschedule to IEM-only execution of the nested-guest. */
7986	LogFlow(("%s: Enabling IEM-only EM execution policy!\n", pszInstr));
7987	int rcSched = EMR3SetExecutionPolicy(pVCpu->CTX_SUFF(pVM)->pUVM, EMEXECPOLICY_IEM_ALL, true);
7988	if (rcSched != VINF_SUCCESS)
7989	iemSetPassUpStatus(pVCpu, rcSched);
7990	# endif
7991
7992	/* Finally, done. */
7993	Log2(("vmentry: %s: cs:rip=%04x:%08RX64 cr0=%#RX64 (%#RX64) cr4=%#RX64 (%#RX64) efer=%#RX64 (%#RX64)\n",
7994	pszInstr, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.cr0,
7995	pVmcs->u64Cr0ReadShadow.u, pVCpu->cpum.GstCtx.cr4, pVmcs->u64Cr4ReadShadow.u,
7996	pVCpu->cpum.GstCtx.msrEFER, pVmcs->u64GuestEferMsr.u));
7997	return VINF_SUCCESS;
7998	}
7999	return iemVmxVmexit(pVCpu, VMX_EXIT_ERR_MSR_LOAD \| VMX_EXIT_REASON_ENTRY_FAILED, pVmcs->u64RoExitQual.u);
8000	}
8001	}
8002	return iemVmxVmexit(pVCpu, VMX_EXIT_ERR_INVALID_GUEST_STATE \| VMX_EXIT_REASON_ENTRY_FAILED, pVmcs->u64RoExitQual.u);
8003	}
8004
8005	iemVmxVmFail(pVCpu, VMXINSTRERR_VMENTRY_INVALID_HOST_STATE);
8006	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8007	}
8008
8009	iemVmxVmFail(pVCpu, VMXINSTRERR_VMENTRY_INVALID_CTLS);
8010	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8011	# endif
8012	}
8013
8014
8015	/**
8016	* Interface for HM and EM to emulate the VMLAUNCH/VMRESUME instruction.
8017	*
8018	* @returns Strict VBox status code.
8019	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
8020	* @param cbInstr The instruction length in bytes.
8021	* @param uInstrId The instruction ID (VMXINSTRID_VMLAUNCH or
8022	* VMXINSTRID_VMRESUME).
8023	* @thread EMT(pVCpu)
8024	*/
8025	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmlaunchVmresume(PVMCPUCC pVCpu, uint8_t cbInstr, VMXINSTRID uInstrId)
8026	{
8027	IEMEXEC_ASSERT_INSTR_LEN_RETURN(cbInstr, 3);
8028	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_VMX_VMENTRY_MASK);
8029
8030	iemInitExec(pVCpu, 0 /fExecOpts/);
8031	VBOXSTRICTRC rcStrict = iemVmxVmlaunchVmresume(pVCpu, cbInstr, uInstrId);
8032	Assert(!pVCpu->iem.s.cActiveMappings);
8033	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
8034	}
8035
8036
8037	/**
8038	* Checks whether an RDMSR or WRMSR instruction for the given MSR is intercepted
8039	* (causes a VM-exit) or not.
8040	*
8041	* @returns @c true if the instruction is intercepted, @c false otherwise.
8042	* @param pVCpu The cross context virtual CPU structure.
8043	* @param uExitReason The VM-exit reason (VMX_EXIT_RDMSR or
8044	* VMX_EXIT_WRMSR).
8045	* @param idMsr The MSR.
8046	*/
8047	bool iemVmxIsRdmsrWrmsrInterceptSet(PCVMCPU pVCpu, uint32_t uExitReason, uint32_t idMsr) RT_NOEXCEPT
8048	{
8049	Assert(IEM_VMX_IS_NON_ROOT_MODE(pVCpu));
8050	Assert( uExitReason == VMX_EXIT_RDMSR
8051	\|\| uExitReason == VMX_EXIT_WRMSR);
8052
8053	/* Consult the MSR bitmap if the feature is supported. */
8054	PCVMXVVMCS const pVmcs = &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs;
8055	Assert(pVmcs);
8056	if (pVmcs->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
8057	{
8058	uint32_t const fMsrpm = CPUMGetVmxMsrPermission(pVCpu->cpum.GstCtx.hwvirt.vmx.abMsrBitmap, idMsr);
8059	if (uExitReason == VMX_EXIT_RDMSR)
8060	return RT_BOOL(fMsrpm & VMXMSRPM_EXIT_RD);
8061	return RT_BOOL(fMsrpm & VMXMSRPM_EXIT_WR);
8062	}
8063
8064	/* Without MSR bitmaps, all MSR accesses are intercepted. */
8065	return true;
8066	}
8067
8068
8069	/**
8070	* VMREAD instruction execution worker that does not perform any validation checks.
8071	*
8072	* Callers are expected to have performed the necessary checks and to ensure the
8073	* VMREAD will succeed.
8074	*
8075	* @param pVmcs Pointer to the virtual VMCS.
8076	* @param pu64Dst Where to write the VMCS value.
8077	* @param u64VmcsField The VMCS field.
8078	*
8079	* @remarks May be called with interrupts disabled.
8080	*/
8081	static void iemVmxVmreadNoCheck(PCVMXVVMCS pVmcs, uint64_t *pu64Dst, uint64_t u64VmcsField) RT_NOEXCEPT
8082	{
8083	VMXVMCSFIELD VmcsField;
8084	VmcsField.u = u64VmcsField;
8085	uint8_t const uWidth = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_WIDTH);
8086	uint8_t const uType = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_TYPE);
8087	uint8_t const uWidthType = (uWidth << 2) \| uType;
8088	uint8_t const uIndex = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_INDEX);
8089	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
8090	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
8091	AssertMsg(offField < VMX_V_VMCS_SIZE, ("off=%u field=%#RX64 width=%#x type=%#x index=%#x (%u)\n", offField, u64VmcsField,
8092	uWidth, uType, uIndex, uIndex));
8093	AssertCompile(VMX_V_SHADOW_VMCS_SIZE == VMX_V_VMCS_SIZE);
8094
8095	/*
8096	* Read the VMCS component based on the field's effective width.
8097	*
8098	* The effective width is 64-bit fields adjusted to 32-bits if the access-type
8099	* indicates high bits (little endian).
8100	*
8101	* Note! The caller is responsible to trim the result and update registers
8102	* or memory locations are required. Here we just zero-extend to the largest
8103	* type (i.e. 64-bits).
8104	*/
8105	uint8_t const pbVmcs = (uint8_t const )pVmcs;
8106	uint8_t const *pbField = pbVmcs + offField;
8107	uint8_t const uEffWidth = VMXGetVmcsFieldWidthEff(VmcsField.u);
8108	switch (uEffWidth)
8109	{
8110	case VMX_VMCSFIELD_WIDTH_64BIT:
8111	case VMX_VMCSFIELD_WIDTH_NATURAL: pu64Dst = (uint64_t const *)pbField; break;
8112	case VMX_VMCSFIELD_WIDTH_32BIT: pu64Dst = (uint32_t const *)pbField; break;
8113	case VMX_VMCSFIELD_WIDTH_16BIT: pu64Dst = (uint16_t const *)pbField; break;
8114	}
8115	}
8116
8117
8118	/**
8119	* Interface for HM and EM to read a VMCS field from the nested-guest VMCS.
8120	*
8121	* It is ASSUMED the caller knows what they're doing. No VMREAD instruction checks
8122	* are performed. Bounds checks are strict builds only.
8123	*
8124	* @param pVmcs Pointer to the virtual VMCS.
8125	* @param u64VmcsField The VMCS field.
8126	* @param pu64Dst Where to store the VMCS value.
8127	*
8128	* @remarks May be called with interrupts disabled.
8129	* @todo This should probably be moved to CPUM someday.
8130	*/
8131	VMM_INT_DECL(void) IEMReadVmxVmcsField(PCVMXVVMCS pVmcs, uint64_t u64VmcsField, uint64_t *pu64Dst)
8132	{
8133	AssertPtr(pVmcs);
8134	AssertPtr(pu64Dst);
8135	iemVmxVmreadNoCheck(pVmcs, pu64Dst, u64VmcsField);
8136	}
8137
8138
8139	/**
8140	* VMREAD common (memory/register) instruction execution worker.
8141	*
8142	* @returns Strict VBox status code.
8143	* @param pVCpu The cross context virtual CPU structure.
8144	* @param cbInstr The instruction length in bytes.
8145	* @param pu64Dst Where to write the VMCS value (only updated when
8146	* VINF_SUCCESS is returned).
8147	* @param u64VmcsField The VMCS field.
8148	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
8149	* NULL.
8150	*/
8151	static VBOXSTRICTRC iemVmxVmreadCommon(PVMCPUCC pVCpu, uint8_t cbInstr, uint64_t *pu64Dst,
8152	uint64_t u64VmcsField, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8153	{
8154	/* Nested-guest intercept. */
8155	if ( IEM_VMX_IS_NON_ROOT_MODE(pVCpu)
8156	&& CPUMIsGuestVmxVmreadVmwriteInterceptSet(pVCpu, VMX_EXIT_VMREAD, u64VmcsField))
8157	{
8158	if (pExitInfo)
8159	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
8160	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMREAD, VMXINSTRID_VMREAD, cbInstr);
8161	}
8162
8163	/* CPL. */
8164	if (IEM_GET_CPL(pVCpu) == 0)
8165	{ /* likely */ }
8166	else
8167	{
8168	Log(("vmread: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
8169	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmread_Cpl;
8170	return iemRaiseGeneralProtectionFault0(pVCpu);
8171	}
8172
8173	pVCpu->iem.s.cPotentialExits++;
8174
8175	/* VMCS pointer in root mode. */
8176	if ( !IEM_VMX_IS_ROOT_MODE(pVCpu)
8177	\|\| IEM_VMX_HAS_CURRENT_VMCS(pVCpu))
8178	{ /* likely */ }
8179	else
8180	{
8181	Log(("vmread: VMCS pointer %#RGp invalid -> VMFailInvalid\n", IEM_VMX_GET_CURRENT_VMCS(pVCpu)));
8182	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmread_PtrInvalid;
8183	iemVmxVmFailInvalid(pVCpu);
8184	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8185	}
8186
8187	/* VMCS-link pointer in non-root mode. */
8188	if ( !IEM_VMX_IS_NON_ROOT_MODE(pVCpu)
8189	\|\| IEM_VMX_HAS_SHADOW_VMCS(pVCpu))
8190	{ /* likely */ }
8191	else
8192	{
8193	Log(("vmread: VMCS-link pointer %#RGp invalid -> VMFailInvalid\n", IEM_VMX_GET_SHADOW_VMCS(pVCpu)));
8194	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmread_LinkPtrInvalid;
8195	iemVmxVmFailInvalid(pVCpu);
8196	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8197	}
8198
8199	/* Supported VMCS field. */
8200	if (CPUMIsGuestVmxVmcsFieldValid(pVCpu->CTX_SUFF(pVM), u64VmcsField))
8201	{ /* likely */ }
8202	else
8203	{
8204	Log(("vmread: VMCS field %#RX64 invalid -> VMFail\n", u64VmcsField));
8205	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmread_FieldInvalid;
8206	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64VmcsField;
8207	iemVmxVmFail(pVCpu, VMXINSTRERR_VMREAD_INVALID_COMPONENT);
8208	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8209	}
8210
8211	/*
8212	* Reading from the current or shadow VMCS.
8213	*/
8214	PCVMXVVMCS pVmcs = !IEM_VMX_IS_NON_ROOT_MODE(pVCpu)
8215	? &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs
8216	: &pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs;
8217	iemVmxVmreadNoCheck(pVmcs, pu64Dst, u64VmcsField);
8218	Log4(("vmread %#RX64 => %#RX64\n", u64VmcsField, *pu64Dst));
8219	return VINF_SUCCESS;
8220	}
8221
8222
8223	/**
8224	* VMREAD (64-bit register) instruction execution worker.
8225	*
8226	* @returns Strict VBox status code.
8227	* @param pVCpu The cross context virtual CPU structure.
8228	* @param cbInstr The instruction length in bytes.
8229	* @param pu64Dst Where to store the VMCS field's value.
8230	* @param u64VmcsField The VMCS field.
8231	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
8232	* NULL.
8233	*/
8234	static VBOXSTRICTRC iemVmxVmreadReg64(PVMCPUCC pVCpu, uint8_t cbInstr, uint64_t *pu64Dst,
8235	uint64_t u64VmcsField, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8236	{
8237	VBOXSTRICTRC rcStrict = iemVmxVmreadCommon(pVCpu, cbInstr, pu64Dst, u64VmcsField, pExitInfo);
8238	if (rcStrict == VINF_SUCCESS)
8239	{
8240	iemVmxVmSucceed(pVCpu);
8241	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8242	}
8243
8244	Log(("vmread/reg: iemVmxVmreadCommon failed rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
8245	return rcStrict;
8246	}
8247
8248
8249	/**
8250	* VMREAD (32-bit register) instruction execution worker.
8251	*
8252	* @returns Strict VBox status code.
8253	* @param pVCpu The cross context virtual CPU structure.
8254	* @param cbInstr The instruction length in bytes.
8255	* @param pu32Dst Where to store the VMCS field's value.
8256	* @param u32VmcsField The VMCS field.
8257	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
8258	* NULL.
8259	*/
8260	static VBOXSTRICTRC iemVmxVmreadReg32(PVMCPUCC pVCpu, uint8_t cbInstr, uint32_t *pu32Dst,
8261	uint64_t u32VmcsField, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8262	{
8263	uint64_t u64Dst;
8264	VBOXSTRICTRC rcStrict = iemVmxVmreadCommon(pVCpu, cbInstr, &u64Dst, u32VmcsField, pExitInfo);
8265	if (rcStrict == VINF_SUCCESS)
8266	{
8267	*pu32Dst = u64Dst;
8268	iemVmxVmSucceed(pVCpu);
8269	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8270	}
8271
8272	Log(("vmread/reg: iemVmxVmreadCommon failed rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
8273	return rcStrict;
8274	}
8275
8276
8277	/**
8278	* VMREAD (memory) instruction execution worker.
8279	*
8280	* @returns Strict VBox status code.
8281	* @param pVCpu The cross context virtual CPU structure.
8282	* @param cbInstr The instruction length in bytes.
8283	* @param iEffSeg The effective segment register to use with @a u64Val.
8284	* Pass UINT8_MAX if it is a register access.
8285	* @param GCPtrDst The guest linear address to store the VMCS field's
8286	* value.
8287	* @param u64VmcsField The VMCS field.
8288	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
8289	* NULL.
8290	*/
8291	static VBOXSTRICTRC iemVmxVmreadMem(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg, RTGCPTR GCPtrDst,
8292	uint64_t u64VmcsField, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8293	{
8294	uint64_t u64Dst;
8295	VBOXSTRICTRC rcStrict = iemVmxVmreadCommon(pVCpu, cbInstr, &u64Dst, u64VmcsField, pExitInfo);
8296	if (rcStrict == VINF_SUCCESS)
8297	{
8298	/*
8299	* Write the VMCS field's value to the location specified in guest-memory.
8300	*/
8301	if (IEM_IS_64BIT_CODE(pVCpu))
8302	rcStrict = iemMemStoreDataU64(pVCpu, iEffSeg, GCPtrDst, u64Dst);
8303	else
8304	rcStrict = iemMemStoreDataU32(pVCpu, iEffSeg, GCPtrDst, u64Dst);
8305	if (rcStrict == VINF_SUCCESS)
8306	{
8307	iemVmxVmSucceed(pVCpu);
8308	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8309	}
8310
8311	Log(("vmread/mem: Failed to write to memory operand at %#RGv, rc=%Rrc\n", GCPtrDst, VBOXSTRICTRC_VAL(rcStrict)));
8312	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmread_PtrMap;
8313	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrDst;
8314	return rcStrict;
8315	}
8316
8317	Log(("vmread/mem: iemVmxVmreadCommon failed rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
8318	return rcStrict;
8319	}
8320
8321
8322	/**
8323	* Interface for HM and EM to emulate the VMREAD instruction.
8324	*
8325	* @returns Strict VBox status code.
8326	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
8327	* @param pExitInfo Pointer to the VM-exit information.
8328	* @thread EMT(pVCpu)
8329	*/
8330	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmread(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
8331	{
8332	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
8333	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
8334	Assert(pExitInfo);
8335
8336	iemInitExec(pVCpu, 0 /fExecOpts/);
8337
8338	VBOXSTRICTRC rcStrict;
8339	uint8_t const cbInstr = pExitInfo->cbInstr;
8340	bool const fIs64BitMode = RT_BOOL(IEM_IS_64BIT_CODE(pVCpu));
8341	uint64_t const u64FieldEnc = fIs64BitMode
8342	? iemGRegFetchU64(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg2)
8343	: iemGRegFetchU32(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg2);
8344	if (pExitInfo->InstrInfo.VmreadVmwrite.fIsRegOperand)
8345	{
8346	if (fIs64BitMode)
8347	{
8348	uint64_t *pu64Dst = iemGRegRefU64(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg1);
8349	rcStrict = iemVmxVmreadReg64(pVCpu, cbInstr, pu64Dst, u64FieldEnc, pExitInfo);
8350	}
8351	else
8352	{
8353	uint32_t *pu32Dst = iemGRegRefU32(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg1);
8354	rcStrict = iemVmxVmreadReg32(pVCpu, cbInstr, pu32Dst, u64FieldEnc, pExitInfo);
8355	}
8356	}
8357	else
8358	{
8359	RTGCPTR const GCPtrDst = pExitInfo->GCPtrEffAddr;
8360	uint8_t const iEffSeg = pExitInfo->InstrInfo.VmreadVmwrite.iSegReg;
8361	rcStrict = iemVmxVmreadMem(pVCpu, cbInstr, iEffSeg, GCPtrDst, u64FieldEnc, pExitInfo);
8362	}
8363	Assert(!pVCpu->iem.s.cActiveMappings);
8364	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
8365	}
8366
8367
8368	/**
8369	* VMWRITE instruction execution worker that does not perform any validation
8370	* checks.
8371	*
8372	* Callers are expected to have performed the necessary checks and to ensure the
8373	* VMWRITE will succeed.
8374	*
8375	* @param pVmcs Pointer to the virtual VMCS.
8376	* @param u64Val The value to write.
8377	* @param u64VmcsField The VMCS field.
8378	*
8379	* @remarks May be called with interrupts disabled.
8380	*/
8381	static void iemVmxVmwriteNoCheck(PVMXVVMCS pVmcs, uint64_t u64Val, uint64_t u64VmcsField) RT_NOEXCEPT
8382	{
8383	VMXVMCSFIELD VmcsField;
8384	VmcsField.u = u64VmcsField;
8385	uint8_t const uWidth = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_WIDTH);
8386	uint8_t const uType = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_TYPE);
8387	uint8_t const uWidthType = (uWidth << 2) \| uType;
8388	uint8_t const uIndex = RT_BF_GET(VmcsField.u, VMX_BF_VMCSFIELD_INDEX);
8389	Assert(uIndex <= VMX_V_VMCS_MAX_INDEX);
8390	uint16_t const offField = g_aoffVmcsMap[uWidthType][uIndex];
8391	Assert(offField < VMX_V_VMCS_SIZE);
8392	AssertCompile(VMX_V_SHADOW_VMCS_SIZE == VMX_V_VMCS_SIZE);
8393
8394	/*
8395	* Write the VMCS component based on the field's effective width.
8396	*
8397	* The effective width is 64-bit fields adjusted to 32-bits if the access-type
8398	* indicates high bits (little endian).
8399	*/
8400	uint8_t pbVmcs = (uint8_t )pVmcs;
8401	uint8_t *pbField = pbVmcs + offField;
8402	uint8_t const uEffWidth = VMXGetVmcsFieldWidthEff(VmcsField.u);
8403	switch (uEffWidth)
8404	{
8405	case VMX_VMCSFIELD_WIDTH_64BIT:
8406	case VMX_VMCSFIELD_WIDTH_NATURAL: (uint64_t )pbField = u64Val; break;
8407	case VMX_VMCSFIELD_WIDTH_32BIT: (uint32_t )pbField = u64Val; break;
8408	case VMX_VMCSFIELD_WIDTH_16BIT: (uint16_t )pbField = u64Val; break;
8409	}
8410	}
8411
8412
8413	/**
8414	* Interface for HM and EM to write a VMCS field in the nested-guest VMCS.
8415	*
8416	* It is ASSUMED the caller knows what they're doing. No VMWRITE instruction checks
8417	* are performed. Bounds checks are strict builds only.
8418	*
8419	* @param pVmcs Pointer to the virtual VMCS.
8420	* @param u64VmcsField The VMCS field.
8421	* @param u64Val The value to write.
8422	*
8423	* @remarks May be called with interrupts disabled.
8424	* @todo This should probably be moved to CPUM someday.
8425	*/
8426	VMM_INT_DECL(void) IEMWriteVmxVmcsField(PVMXVVMCS pVmcs, uint64_t u64VmcsField, uint64_t u64Val)
8427	{
8428	AssertPtr(pVmcs);
8429	iemVmxVmwriteNoCheck(pVmcs, u64Val, u64VmcsField);
8430	}
8431
8432
8433	/**
8434	* VMWRITE instruction execution worker.
8435	*
8436	* @returns Strict VBox status code.
8437	* @param pVCpu The cross context virtual CPU structure.
8438	* @param cbInstr The instruction length in bytes.
8439	* @param iEffSeg The effective segment register to use with @a u64Val.
8440	* Pass UINT8_MAX if it is a register access.
8441	* @param u64Val The value to write (or guest linear address to the
8442	* value), @a iEffSeg will indicate if it's a memory
8443	* operand.
8444	* @param u64VmcsField The VMCS field.
8445	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
8446	* NULL.
8447	*/
8448	static VBOXSTRICTRC iemVmxVmwrite(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg, uint64_t u64Val,
8449	uint64_t u64VmcsField, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8450	{
8451	/* Nested-guest intercept. */
8452	if ( IEM_VMX_IS_NON_ROOT_MODE(pVCpu)
8453	&& CPUMIsGuestVmxVmreadVmwriteInterceptSet(pVCpu, VMX_EXIT_VMWRITE, u64VmcsField))
8454	{
8455	if (pExitInfo)
8456	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
8457	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMWRITE, VMXINSTRID_VMWRITE, cbInstr);
8458	}
8459
8460	/* CPL. */
8461	if (IEM_GET_CPL(pVCpu) == 0)
8462	{ /* likely */ }
8463	else
8464	{
8465	Log(("vmwrite: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
8466	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_Cpl;
8467	return iemRaiseGeneralProtectionFault0(pVCpu);
8468	}
8469
8470	pVCpu->iem.s.cPotentialExits++;
8471
8472	/* VMCS pointer in root mode. */
8473	if ( !IEM_VMX_IS_ROOT_MODE(pVCpu)
8474	\|\| IEM_VMX_HAS_CURRENT_VMCS(pVCpu))
8475	{ /* likely */ }
8476	else
8477	{
8478	Log(("vmwrite: VMCS pointer %#RGp invalid -> VMFailInvalid\n", IEM_VMX_GET_CURRENT_VMCS(pVCpu)));
8479	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_PtrInvalid;
8480	iemVmxVmFailInvalid(pVCpu);
8481	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8482	}
8483
8484	/* VMCS-link pointer in non-root mode. */
8485	if ( !IEM_VMX_IS_NON_ROOT_MODE(pVCpu)
8486	\|\| IEM_VMX_HAS_SHADOW_VMCS(pVCpu))
8487	{ /* likely */ }
8488	else
8489	{
8490	Log(("vmwrite: VMCS-link pointer %#RGp invalid -> VMFailInvalid\n", IEM_VMX_GET_SHADOW_VMCS(pVCpu)));
8491	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_LinkPtrInvalid;
8492	iemVmxVmFailInvalid(pVCpu);
8493	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8494	}
8495
8496	/* If the VMWRITE instruction references memory, access the specified memory operand. */
8497	bool const fIsRegOperand = iEffSeg == UINT8_MAX;
8498	if (!fIsRegOperand)
8499	{
8500	/* Read the value from the specified guest memory location. */
8501	VBOXSTRICTRC rcStrict;
8502	RTGCPTR const GCPtrVal = u64Val;
8503	if (IEM_IS_64BIT_CODE(pVCpu))
8504	rcStrict = iemMemFetchDataU64(pVCpu, &u64Val, iEffSeg, GCPtrVal);
8505	else
8506	rcStrict = iemMemFetchDataU32_ZX_U64(pVCpu, &u64Val, iEffSeg, GCPtrVal);
8507	if (RT_UNLIKELY(rcStrict != VINF_SUCCESS))
8508	{
8509	Log(("vmwrite: Failed to read value from memory operand at %#RGv, rc=%Rrc\n", GCPtrVal, VBOXSTRICTRC_VAL(rcStrict)));
8510	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_PtrMap;
8511	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrVal;
8512	return rcStrict;
8513	}
8514	}
8515	else
8516	Assert(!pExitInfo \|\| pExitInfo->InstrInfo.VmreadVmwrite.fIsRegOperand);
8517
8518	/* Supported VMCS field. */
8519	if (CPUMIsGuestVmxVmcsFieldValid(pVCpu->CTX_SUFF(pVM), u64VmcsField))
8520	{ /* likely */ }
8521	else
8522	{
8523	Log(("vmwrite: VMCS field %#RX64 invalid -> VMFail\n", u64VmcsField));
8524	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_FieldInvalid;
8525	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64VmcsField;
8526	iemVmxVmFail(pVCpu, VMXINSTRERR_VMWRITE_INVALID_COMPONENT);
8527	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8528	}
8529
8530	/* Read-only VMCS field. */
8531	bool const fIsFieldReadOnly = VMXIsVmcsFieldReadOnly(u64VmcsField);
8532	if ( !fIsFieldReadOnly
8533	\|\| IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxVmwriteAll)
8534	{ /* likely */ }
8535	else
8536	{
8537	Log(("vmwrite: Write to read-only VMCS component %#RX64 -> VMFail\n", u64VmcsField));
8538	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmwrite_FieldRo;
8539	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64VmcsField;
8540	iemVmxVmFail(pVCpu, VMXINSTRERR_VMWRITE_RO_COMPONENT);
8541	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8542	}
8543
8544	/*
8545	* Write to the current or shadow VMCS.
8546	*/
8547	bool const fInVmxNonRootMode = IEM_VMX_IS_NON_ROOT_MODE(pVCpu);
8548	PVMXVVMCS pVmcs = !fInVmxNonRootMode
8549	? &pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs
8550	: &pVCpu->cpum.GstCtx.hwvirt.vmx.ShadowVmcs;
8551	iemVmxVmwriteNoCheck(pVmcs, u64Val, u64VmcsField);
8552	Log4(("vmwrite %#RX64 <= %#RX64\n", u64VmcsField, u64Val));
8553
8554	if ( !fInVmxNonRootMode
8555	&& VM_IS_HM_ENABLED(pVCpu->CTX_SUFF(pVM)))
8556	{
8557	/* Notify HM that the VMCS content might have changed. */
8558	HMNotifyVmxNstGstCurrentVmcsChanged(pVCpu);
8559	}
8560
8561	iemVmxVmSucceed(pVCpu);
8562	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8563	}
8564
8565
8566	/**
8567	* Interface for HM and EM to emulate the VMWRITE instruction.
8568	*
8569	* @returns Strict VBox status code.
8570	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
8571	* @param pExitInfo Pointer to the VM-exit information.
8572	* @thread EMT(pVCpu)
8573	*/
8574	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmwrite(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
8575	{
8576	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
8577	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
8578	Assert(pExitInfo);
8579
8580	iemInitExec(pVCpu, 0 /fExecOpts/);
8581
8582	uint64_t u64Val;
8583	uint8_t iEffSeg;
8584	if (pExitInfo->InstrInfo.VmreadVmwrite.fIsRegOperand)
8585	{
8586	u64Val = iemGRegFetchU64(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg1);
8587	iEffSeg = UINT8_MAX;
8588	}
8589	else
8590	{
8591	u64Val = pExitInfo->GCPtrEffAddr;
8592	iEffSeg = pExitInfo->InstrInfo.VmreadVmwrite.iSegReg;
8593	}
8594	uint8_t const cbInstr = pExitInfo->cbInstr;
8595	uint64_t const u64FieldEnc = IEM_IS_64BIT_CODE(pVCpu)
8596	? iemGRegFetchU64(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg2)
8597	: iemGRegFetchU32(pVCpu, pExitInfo->InstrInfo.VmreadVmwrite.iReg2);
8598	VBOXSTRICTRC rcStrict = iemVmxVmwrite(pVCpu, cbInstr, iEffSeg, u64Val, u64FieldEnc, pExitInfo);
8599	Assert(!pVCpu->iem.s.cActiveMappings);
8600	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
8601	}
8602
8603
8604	/**
8605	* VMCLEAR instruction execution worker.
8606	*
8607	* @returns Strict VBox status code.
8608	* @param pVCpu The cross context virtual CPU structure.
8609	* @param cbInstr The instruction length in bytes.
8610	* @param iEffSeg The effective segment register to use with @a GCPtrVmcs.
8611	* @param GCPtrVmcs The linear address of the VMCS pointer.
8612	* @param pExitInfo Pointer to the VM-exit information. Optional, can be NULL.
8613	*
8614	* @remarks Common VMX instruction checks are already expected to by the caller,
8615	* i.e. VMX operation, CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
8616	*/
8617	static VBOXSTRICTRC iemVmxVmclear(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg,
8618	RTGCPHYS GCPtrVmcs, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8619	{
8620	/* Nested-guest intercept. */
8621	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
8622	{
8623	if (pExitInfo)
8624	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
8625	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMCLEAR, VMXINSTRID_NONE, cbInstr);
8626	}
8627
8628	Assert(IEM_VMX_IS_ROOT_MODE(pVCpu));
8629
8630	/* CPL. */
8631	if (IEM_GET_CPL(pVCpu) == 0)
8632	{ /* likely */ }
8633	else
8634	{
8635	Log(("vmclear: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
8636	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_Cpl;
8637	return iemRaiseGeneralProtectionFault0(pVCpu);
8638	}
8639
8640	/* Get the VMCS pointer from the location specified by the source memory operand. */
8641	RTGCPHYS GCPhysVmcs;
8642	VBOXSTRICTRC rcStrict = iemMemFetchDataU64(pVCpu, &GCPhysVmcs, iEffSeg, GCPtrVmcs);
8643	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
8644	{ /* likely */ }
8645	else
8646	{
8647	Log(("vmclear: Failed to read VMCS physaddr from %#RGv, rc=%Rrc\n", GCPtrVmcs, VBOXSTRICTRC_VAL(rcStrict)));
8648	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_PtrMap;
8649	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrVmcs;
8650	return rcStrict;
8651	}
8652
8653	/* VMCS pointer alignment. */
8654	if (!(GCPhysVmcs & X86_PAGE_4K_OFFSET_MASK))
8655	{ /* likely */ }
8656	else
8657	{
8658	Log(("vmclear: VMCS pointer not page-aligned -> VMFail()\n"));
8659	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_PtrAlign;
8660	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8661	iemVmxVmFail(pVCpu, VMXINSTRERR_VMCLEAR_INVALID_PHYSADDR);
8662	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8663	}
8664
8665	/* VMCS physical-address width limits. */
8666	if (!(GCPhysVmcs >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth))
8667	{ /* likely */ }
8668	else
8669	{
8670	Log(("vmclear: VMCS pointer extends beyond physical-address width -> VMFail()\n"));
8671	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_PtrWidth;
8672	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8673	iemVmxVmFail(pVCpu, VMXINSTRERR_VMCLEAR_INVALID_PHYSADDR);
8674	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8675	}
8676
8677	/* VMCS is not the VMXON region. */
8678	if (GCPhysVmcs != pVCpu->cpum.GstCtx.hwvirt.vmx.GCPhysVmxon)
8679	{ /* likely */ }
8680	else
8681	{
8682	Log(("vmclear: VMCS pointer cannot be identical to VMXON region pointer -> VMFail()\n"));
8683	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_PtrVmxon;
8684	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8685	iemVmxVmFail(pVCpu, VMXINSTRERR_VMCLEAR_VMXON_PTR);
8686	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8687	}
8688
8689	/* Ensure VMCS is not MMIO, ROM etc. This is not an Intel requirement but a
8690	restriction imposed by our implementation. */
8691	if (PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVmcs))
8692	{ /* likely */ }
8693	else
8694	{
8695	Log(("vmclear: VMCS not normal memory -> VMFail()\n"));
8696	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmclear_PtrAbnormal;
8697	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8698	iemVmxVmFail(pVCpu, VMXINSTRERR_VMCLEAR_INVALID_PHYSADDR);
8699	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8700	}
8701
8702	/*
8703	* VMCLEAR allows committing and clearing any valid VMCS pointer.
8704	*
8705	* If the current VMCS is the one being cleared, set its state to 'clear' and commit
8706	* to guest memory. Otherwise, set the state of the VMCS referenced in guest memory
8707	* to 'clear'.
8708	*/
8709	uint8_t const fVmcsLaunchStateClear = VMX_V_VMCS_LAUNCH_STATE_CLEAR;
8710	if ( IEM_VMX_HAS_CURRENT_VMCS(pVCpu)
8711	&& IEM_VMX_GET_CURRENT_VMCS(pVCpu) == GCPhysVmcs)
8712	{
8713	pVCpu->cpum.GstCtx.hwvirt.vmx.Vmcs.fVmcsState = fVmcsLaunchStateClear;
8714	iemVmxWriteCurrentVmcsToGstMem(pVCpu);
8715	IEM_VMX_CLEAR_CURRENT_VMCS(pVCpu);
8716	}
8717	else
8718	{
8719	AssertCompileMemberSize(VMXVVMCS, fVmcsState, sizeof(fVmcsLaunchStateClear));
8720	rcStrict = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), GCPhysVmcs + RT_UOFFSETOF(VMXVVMCS, fVmcsState),
8721	(const void *)&fVmcsLaunchStateClear, sizeof(fVmcsLaunchStateClear));
8722	if (RT_FAILURE(rcStrict))
8723	return rcStrict;
8724	}
8725
8726	iemVmxVmSucceed(pVCpu);
8727	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8728	}
8729
8730
8731	/**
8732	* Interface for HM and EM to emulate the VMCLEAR instruction.
8733	*
8734	* @returns Strict VBox status code.
8735	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
8736	* @param pExitInfo Pointer to the VM-exit information.
8737	* @thread EMT(pVCpu)
8738	*/
8739	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmclear(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
8740	{
8741	Assert(pExitInfo);
8742	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
8743	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
8744
8745	iemInitExec(pVCpu, 0 /fExecOpts/);
8746
8747	uint8_t const iEffSeg = pExitInfo->InstrInfo.VmxXsave.iSegReg;
8748	uint8_t const cbInstr = pExitInfo->cbInstr;
8749	RTGCPTR const GCPtrVmcs = pExitInfo->GCPtrEffAddr;
8750	VBOXSTRICTRC rcStrict = iemVmxVmclear(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, pExitInfo);
8751	Assert(!pVCpu->iem.s.cActiveMappings);
8752	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
8753	}
8754
8755
8756	/**
8757	* VMPTRST instruction execution worker.
8758	*
8759	* @returns Strict VBox status code.
8760	* @param pVCpu The cross context virtual CPU structure.
8761	* @param cbInstr The instruction length in bytes.
8762	* @param iEffSeg The effective segment register to use with @a GCPtrVmcs.
8763	* @param GCPtrVmcs The linear address of where to store the current VMCS
8764	* pointer.
8765	* @param pExitInfo Pointer to the VM-exit information. Optional, can be NULL.
8766	*
8767	* @remarks Common VMX instruction checks are already expected to by the caller,
8768	* i.e. VMX operation, CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
8769	*/
8770	static VBOXSTRICTRC iemVmxVmptrst(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg,
8771	RTGCPHYS GCPtrVmcs, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8772	{
8773	/* Nested-guest intercept. */
8774	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
8775	{
8776	if (pExitInfo)
8777	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
8778	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMPTRST, VMXINSTRID_NONE, cbInstr);
8779	}
8780
8781	Assert(IEM_VMX_IS_ROOT_MODE(pVCpu));
8782
8783	/* CPL. */
8784	if (IEM_GET_CPL(pVCpu) == 0)
8785	{ /* likely */ }
8786	else
8787	{
8788	Log(("vmptrst: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
8789	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrst_Cpl;
8790	return iemRaiseGeneralProtectionFault0(pVCpu);
8791	}
8792
8793	/* Set the VMCS pointer to the location specified by the destination memory operand. */
8794	AssertCompile(NIL_RTGCPHYS == ~(RTGCPHYS)0U);
8795	VBOXSTRICTRC rcStrict = iemMemStoreDataU64(pVCpu, iEffSeg, GCPtrVmcs, IEM_VMX_GET_CURRENT_VMCS(pVCpu));
8796	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
8797	{
8798	iemVmxVmSucceed(pVCpu);
8799	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8800	}
8801
8802	Log(("vmptrst: Failed to store VMCS pointer to memory at destination operand %#Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
8803	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrst_PtrMap;
8804	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrVmcs;
8805	return rcStrict;
8806	}
8807
8808
8809	/**
8810	* Interface for HM and EM to emulate the VMPTRST instruction.
8811	*
8812	* @returns Strict VBox status code.
8813	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
8814	* @param pExitInfo Pointer to the VM-exit information.
8815	* @thread EMT(pVCpu)
8816	*/
8817	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmptrst(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
8818	{
8819	Assert(pExitInfo);
8820	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
8821	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
8822
8823	iemInitExec(pVCpu, 0 /fExecOpts/);
8824
8825	uint8_t const iEffSeg = pExitInfo->InstrInfo.VmxXsave.iSegReg;
8826	uint8_t const cbInstr = pExitInfo->cbInstr;
8827	RTGCPTR const GCPtrVmcs = pExitInfo->GCPtrEffAddr;
8828	VBOXSTRICTRC rcStrict = iemVmxVmptrst(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, pExitInfo);
8829	Assert(!pVCpu->iem.s.cActiveMappings);
8830	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
8831	}
8832
8833
8834	/**
8835	* VMPTRLD instruction execution worker.
8836	*
8837	* @returns Strict VBox status code.
8838	* @param pVCpu The cross context virtual CPU structure.
8839	* @param cbInstr The instruction length in bytes.
8840	* @param GCPtrVmcs The linear address of the current VMCS pointer.
8841	* @param pExitInfo Pointer to the VM-exit information. Optional, can be NULL.
8842	*
8843	* @remarks Common VMX instruction checks are already expected to by the caller,
8844	* i.e. VMX operation, CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
8845	*/
8846	static VBOXSTRICTRC iemVmxVmptrld(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg,
8847	RTGCPHYS GCPtrVmcs, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
8848	{
8849	/* Nested-guest intercept. */
8850	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
8851	{
8852	if (pExitInfo)
8853	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
8854	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMPTRLD, VMXINSTRID_NONE, cbInstr);
8855	}
8856
8857	Assert(IEM_VMX_IS_ROOT_MODE(pVCpu));
8858
8859	/* CPL. */
8860	if (IEM_GET_CPL(pVCpu) == 0)
8861	{ /* likely */ }
8862	else
8863	{
8864	Log(("vmptrld: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
8865	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_Cpl;
8866	return iemRaiseGeneralProtectionFault0(pVCpu);
8867	}
8868
8869	/* Get the VMCS pointer from the location specified by the source memory operand. */
8870	RTGCPHYS GCPhysVmcs;
8871	VBOXSTRICTRC rcStrict = iemMemFetchDataU64(pVCpu, &GCPhysVmcs, iEffSeg, GCPtrVmcs);
8872	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
8873	{ /* likely */ }
8874	else
8875	{
8876	Log(("vmptrld: Failed to read VMCS physaddr from %#RGv, rc=%Rrc\n", GCPtrVmcs, VBOXSTRICTRC_VAL(rcStrict)));
8877	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrMap;
8878	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrVmcs;
8879	return rcStrict;
8880	}
8881
8882	/* VMCS pointer alignment. */
8883	if (!(GCPhysVmcs & X86_PAGE_4K_OFFSET_MASK))
8884	{ /* likely */ }
8885	else
8886	{
8887	Log(("vmptrld: VMCS pointer not page-aligned -> VMFail()\n"));
8888	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrAlign;
8889	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8890	iemVmxVmFail(pVCpu, VMXINSTRERR_VMPTRLD_INVALID_PHYSADDR);
8891	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8892	}
8893
8894	/* VMCS physical-address width limits. */
8895	if (!(GCPhysVmcs >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth))
8896	{ /* likely */ }
8897	else
8898	{
8899	Log(("vmptrld: VMCS pointer extends beyond physical-address width -> VMFail()\n"));
8900	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrWidth;
8901	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8902	iemVmxVmFail(pVCpu, VMXINSTRERR_VMPTRLD_INVALID_PHYSADDR);
8903	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8904	}
8905
8906	/* VMCS is not the VMXON region. */
8907	if (GCPhysVmcs != pVCpu->cpum.GstCtx.hwvirt.vmx.GCPhysVmxon)
8908	{ /* likely */ }
8909	else
8910	{
8911	Log(("vmptrld: VMCS pointer cannot be identical to VMXON region pointer -> VMFail()\n"));
8912	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrVmxon;
8913	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8914	iemVmxVmFail(pVCpu, VMXINSTRERR_VMPTRLD_VMXON_PTR);
8915	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8916	}
8917
8918	/* Ensure VMCS is not MMIO, ROM etc. This is not an Intel requirement but a
8919	restriction imposed by our implementation. */
8920	if (PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVmcs))
8921	{ /* likely */ }
8922	else
8923	{
8924	Log(("vmptrld: VMCS not normal memory -> VMFail()\n"));
8925	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrAbnormal;
8926	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8927	iemVmxVmFail(pVCpu, VMXINSTRERR_VMPTRLD_INVALID_PHYSADDR);
8928	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8929	}
8930
8931	/* Read just the VMCS revision from the VMCS. */
8932	VMXVMCSREVID VmcsRevId;
8933	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &VmcsRevId, GCPhysVmcs, sizeof(VmcsRevId));
8934	if (RT_SUCCESS(rc))
8935	{ /* likely */ }
8936	else
8937	{
8938	Log(("vmptrld: Failed to read revision identifier from VMCS at %#RGp, rc=%Rrc\n", GCPhysVmcs, rc));
8939	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_RevPtrReadPhys;
8940	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8941	return rc;
8942	}
8943
8944	/*
8945	* Verify the VMCS revision specified by the guest matches what we reported to the guest.
8946	* Verify the VMCS is not a shadow VMCS, if the VMCS shadowing feature is supported.
8947	*/
8948	if ( VmcsRevId.n.u31RevisionId == VMX_V_VMCS_REVISION_ID
8949	&& ( !VmcsRevId.n.fIsShadowVmcs
8950	\|\| IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxVmcsShadowing))
8951	{ /* likely */ }
8952	else
8953	{
8954	if (VmcsRevId.n.u31RevisionId != VMX_V_VMCS_REVISION_ID)
8955	{
8956	Log(("vmptrld: VMCS revision mismatch, expected %#RX32 got %#RX32, GCPtrVmcs=%#RGv GCPhysVmcs=%#RGp -> VMFail()\n",
8957	VMX_V_VMCS_REVISION_ID, VmcsRevId.n.u31RevisionId, GCPtrVmcs, GCPhysVmcs));
8958	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_VmcsRevId;
8959	}
8960	else
8961	{
8962	Log(("vmptrld: Shadow VMCS -> VMFail()\n"));
8963	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_ShadowVmcs;
8964	}
8965	iemVmxVmFail(pVCpu, VMXINSTRERR_VMPTRLD_INCORRECT_VMCS_REV);
8966	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
8967	}
8968
8969	/*
8970	* We cache only the current VMCS in CPUMCTX. Therefore, VMPTRLD should always flush
8971	* the cache of an existing, current VMCS back to guest memory before loading a new,
8972	* different current VMCS.
8973	*/
8974	if (IEM_VMX_GET_CURRENT_VMCS(pVCpu) != GCPhysVmcs)
8975	{
8976	if (IEM_VMX_HAS_CURRENT_VMCS(pVCpu))
8977	{
8978	iemVmxWriteCurrentVmcsToGstMem(pVCpu);
8979	IEM_VMX_CLEAR_CURRENT_VMCS(pVCpu);
8980	}
8981
8982	/* Set the new VMCS as the current VMCS and read it from guest memory. */
8983	IEM_VMX_SET_CURRENT_VMCS(pVCpu, GCPhysVmcs);
8984	rc = iemVmxReadCurrentVmcsFromGstMem(pVCpu);
8985	if (RT_SUCCESS(rc))
8986	{
8987	/* Notify HM that a new, current VMCS is loaded. */
8988	if (VM_IS_HM_ENABLED(pVCpu->CTX_SUFF(pVM)))
8989	HMNotifyVmxNstGstCurrentVmcsChanged(pVCpu);
8990	}
8991	else
8992	{
8993	Log(("vmptrld: Failed to read VMCS at %#RGp, rc=%Rrc\n", GCPhysVmcs, rc));
8994	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmptrld_PtrReadPhys;
8995	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmcs;
8996	return rc;
8997	}
8998	}
8999
9000	Assert(IEM_VMX_HAS_CURRENT_VMCS(pVCpu));
9001	iemVmxVmSucceed(pVCpu);
9002	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9003	}
9004
9005
9006	/**
9007	* Interface for HM and EM to emulate the VMPTRLD instruction.
9008	*
9009	* @returns Strict VBox status code.
9010	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
9011	* @param pExitInfo Pointer to the VM-exit information.
9012	* @thread EMT(pVCpu)
9013	*/
9014	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmptrld(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
9015	{
9016	Assert(pExitInfo);
9017	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
9018	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
9019
9020	iemInitExec(pVCpu, 0 /fExecOpts/);
9021
9022	uint8_t const iEffSeg = pExitInfo->InstrInfo.VmxXsave.iSegReg;
9023	uint8_t const cbInstr = pExitInfo->cbInstr;
9024	RTGCPTR const GCPtrVmcs = pExitInfo->GCPtrEffAddr;
9025	VBOXSTRICTRC rcStrict = iemVmxVmptrld(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, pExitInfo);
9026	Assert(!pVCpu->iem.s.cActiveMappings);
9027	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
9028	}
9029
9030
9031	/**
9032	* INVVPID instruction execution worker.
9033	*
9034	* @returns Strict VBox status code.
9035	* @param pVCpu The cross context virtual CPU structure.
9036	* @param cbInstr The instruction length in bytes.
9037	* @param iEffSeg The segment of the invvpid descriptor.
9038	* @param GCPtrInvvpidDesc The address of invvpid descriptor.
9039	* @param u64InvvpidType The invalidation type.
9040	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
9041	* NULL.
9042	*
9043	* @remarks Common VMX instruction checks are already expected to by the caller,
9044	* i.e. VMX operation, CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
9045	*/
9046	VBOXSTRICTRC iemVmxInvvpid(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg, RTGCPTR GCPtrInvvpidDesc,
9047	uint64_t u64InvvpidType, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
9048	{
9049	/* Check if INVVPID instruction is supported, otherwise raise #UD. */
9050	if (!IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxVpid)
9051	return iemRaiseUndefinedOpcode(pVCpu);
9052
9053	/* Nested-guest intercept. */
9054	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9055	{
9056	if (pExitInfo)
9057	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
9058	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_INVVPID, VMXINSTRID_NONE, cbInstr);
9059	}
9060
9061	/* CPL. */
9062	if (IEM_GET_CPL(pVCpu) != 0)
9063	{
9064	Log(("invvpid: CPL != 0 -> #GP(0)\n"));
9065	return iemRaiseGeneralProtectionFault0(pVCpu);
9066	}
9067
9068	/*
9069	* Validate INVVPID invalidation type.
9070	*
9071	* The instruction specifies exactly ONE of the supported invalidation types.
9072	*
9073	* Each of the types has a bit in IA32_VMX_EPT_VPID_CAP MSR specifying if it is
9074	* supported. In theory, it's possible for a CPU to not support flushing individual
9075	* addresses but all the other types or any other combination. We do not take any
9076	* shortcuts here by assuming the types we currently expose to the guest.
9077	*/
9078	uint64_t const fCaps = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64EptVpidCaps;
9079	bool const fInvvpidSupported = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVVPID);
9080	bool const fTypeIndivAddr = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVVPID_INDIV_ADDR);
9081	bool const fTypeSingleCtx = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVVPID_SINGLE_CTX);
9082	bool const fTypeAllCtx = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVVPID_ALL_CTX);
9083	bool const fTypeSingleCtxRetainGlobals = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVVPID_SINGLE_CTX_RETAIN_GLOBALS);
9084
9085	bool afSupportedTypes[4];
9086	afSupportedTypes[0] = fTypeIndivAddr;
9087	afSupportedTypes[1] = fTypeSingleCtx;
9088	afSupportedTypes[2] = fTypeAllCtx;
9089	afSupportedTypes[3] = fTypeSingleCtxRetainGlobals;
9090
9091	if ( fInvvpidSupported
9092	&& !(u64InvvpidType & ~(uint64_t)VMX_INVVPID_VALID_MASK)
9093	&& afSupportedTypes[u64InvvpidType & 3])
9094	{ /* likely */ }
9095	else
9096	{
9097	Log(("invvpid: invalid/unsupported invvpid type %#x -> VMFail\n", u64InvvpidType));
9098	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_TypeInvalid;
9099	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64InvvpidType;
9100	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9101	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9102	}
9103
9104	/*
9105	* Fetch the invvpid descriptor from guest memory.
9106	*/
9107	RTUINT128U uDesc;
9108	VBOXSTRICTRC rcStrict = iemMemFetchDataU128(pVCpu, &uDesc, iEffSeg, GCPtrInvvpidDesc);
9109	if (rcStrict == VINF_SUCCESS)
9110	{
9111	/*
9112	* Validate the descriptor.
9113	*/
9114	if (uDesc.s.Lo <= 0xffff)
9115	{ /* likely */ }
9116	else
9117	{
9118	Log(("invvpid: reserved bits set in invvpid descriptor %#RX64 -> #GP(0)\n", uDesc.s.Lo));
9119	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_DescRsvd;
9120	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = uDesc.s.Lo;
9121	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9122	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9123	}
9124
9125	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR3);
9126	RTGCUINTPTR64 const GCPtrInvAddr = uDesc.s.Hi;
9127	uint16_t const uVpid = uDesc.Words.w0;
9128	uint64_t const uCr3 = pVCpu->cpum.GstCtx.cr3;
9129	switch (u64InvvpidType)
9130	{
9131	case VMXTLBFLUSHVPID_INDIV_ADDR:
9132	{
9133	if (uVpid != 0)
9134	{
9135	if (IEM_IS_CANONICAL(GCPtrInvAddr))
9136	{
9137	/* Invalidate mappings for the linear address tagged with VPID. */
9138	/** @todo PGM support for VPID? Currently just flush everything. */
9139	PGMFlushTLB(pVCpu, uCr3, true /* fGlobal */);
9140	iemVmxVmSucceed(pVCpu);
9141	}
9142	else
9143	{
9144	Log(("invvpid: invalidation address %#RGP is not canonical -> VMFail\n", GCPtrInvAddr));
9145	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_Type0InvalidAddr;
9146	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrInvAddr;
9147	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9148	}
9149	}
9150	else
9151	{
9152	Log(("invvpid: invalid VPID %#x for invalidation type %u -> VMFail\n", uVpid, u64InvvpidType));
9153	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_Type0InvalidVpid;
9154	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64InvvpidType;
9155	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9156	}
9157	break;
9158	}
9159
9160	case VMXTLBFLUSHVPID_SINGLE_CONTEXT:
9161	{
9162	if (uVpid != 0)
9163	{
9164	/* Invalidate all mappings with VPID. */
9165	/** @todo PGM support for VPID? Currently just flush everything. */
9166	PGMFlushTLB(pVCpu, uCr3, true /* fGlobal */);
9167	iemVmxVmSucceed(pVCpu);
9168	}
9169	else
9170	{
9171	Log(("invvpid: invalid VPID %#x for invalidation type %u -> VMFail\n", uVpid, u64InvvpidType));
9172	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_Type1InvalidVpid;
9173	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64InvvpidType;
9174	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9175	}
9176	break;
9177	}
9178
9179	case VMXTLBFLUSHVPID_ALL_CONTEXTS:
9180	{
9181	/* Invalidate all mappings with non-zero VPIDs. */
9182	/** @todo PGM support for VPID? Currently just flush everything. */
9183	PGMFlushTLB(pVCpu, uCr3, true /* fGlobal */);
9184	iemVmxVmSucceed(pVCpu);
9185	break;
9186	}
9187
9188	case VMXTLBFLUSHVPID_SINGLE_CONTEXT_RETAIN_GLOBALS:
9189	{
9190	if (uVpid != 0)
9191	{
9192	/* Invalidate all mappings with VPID except global translations. */
9193	/** @todo PGM support for VPID? Currently just flush everything. */
9194	PGMFlushTLB(pVCpu, uCr3, true /* fGlobal */);
9195	iemVmxVmSucceed(pVCpu);
9196	}
9197	else
9198	{
9199	Log(("invvpid: invalid VPID %#x for invalidation type %u -> VMFail\n", uVpid, u64InvvpidType));
9200	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invvpid_Type3InvalidVpid;
9201	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = uVpid;
9202	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9203	}
9204	break;
9205	}
9206	IEM_NOT_REACHED_DEFAULT_CASE_RET();
9207	}
9208	rcStrict = iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9209	}
9210	return rcStrict;
9211	}
9212
9213
9214	/**
9215	* Interface for HM and EM to emulate the INVVPID instruction.
9216	*
9217	* @returns Strict VBox status code.
9218	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
9219	* @param pExitInfo Pointer to the VM-exit information.
9220	* @thread EMT(pVCpu)
9221	*/
9222	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedInvvpid(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
9223	{
9224	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 4);
9225	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
9226	Assert(pExitInfo);
9227
9228	iemInitExec(pVCpu, 0 /fExecOpts/);
9229
9230	uint8_t const iEffSeg = pExitInfo->InstrInfo.Inv.iSegReg;
9231	uint8_t const cbInstr = pExitInfo->cbInstr;
9232	RTGCPTR const GCPtrInvvpidDesc = pExitInfo->GCPtrEffAddr;
9233	uint64_t const u64InvvpidType = IEM_IS_64BIT_CODE(pVCpu)
9234	? iemGRegFetchU64(pVCpu, pExitInfo->InstrInfo.Inv.iReg2)
9235	: iemGRegFetchU32(pVCpu, pExitInfo->InstrInfo.Inv.iReg2);
9236	VBOXSTRICTRC rcStrict = iemVmxInvvpid(pVCpu, cbInstr, iEffSeg, GCPtrInvvpidDesc, u64InvvpidType, pExitInfo);
9237	Assert(!pVCpu->iem.s.cActiveMappings);
9238	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
9239	}
9240
9241	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
9242
9243	/**
9244	* INVEPT instruction execution worker.
9245	*
9246	* @returns Strict VBox status code.
9247	* @param pVCpu The cross context virtual CPU structure.
9248	* @param cbInstr The instruction length in bytes.
9249	* @param iEffSeg The segment of the invept descriptor.
9250	* @param GCPtrInveptDesc The address of invept descriptor.
9251	* @param u64InveptType The invalidation type.
9252	* @param pExitInfo Pointer to the VM-exit information. Optional, can be
9253	* NULL.
9254	*
9255	* @remarks Common VMX instruction checks are already expected to by the caller,
9256	* i.e. VMX operation, CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
9257	*/
9258	static VBOXSTRICTRC iemVmxInvept(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg, RTGCPTR GCPtrInveptDesc,
9259	uint64_t u64InveptType, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
9260	{
9261	/* Check if EPT is supported, otherwise raise #UD. */
9262	if (!IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxEpt)
9263	return iemRaiseUndefinedOpcode(pVCpu);
9264
9265	/* Nested-guest intercept. */
9266	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9267	{
9268	if (pExitInfo)
9269	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
9270	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_INVEPT, VMXINSTRID_NONE, cbInstr);
9271	}
9272
9273	/* CPL. */
9274	if (IEM_GET_CPL(pVCpu) != 0)
9275	{
9276	Log(("invept: CPL != 0 -> #GP(0)\n"));
9277	return iemRaiseGeneralProtectionFault0(pVCpu);
9278	}
9279
9280	/*
9281	* Validate INVEPT invalidation type.
9282	*
9283	* The instruction specifies exactly ONE of the supported invalidation types.
9284	*
9285	* Each of the types has a bit in IA32_VMX_EPT_VPID_CAP MSR specifying if it is
9286	* supported. In theory, it's possible for a CPU to not support flushing individual
9287	* addresses but all the other types or any other combination. We do not take any
9288	* shortcuts here by assuming the types we currently expose to the guest.
9289	*/
9290	uint64_t const fCaps = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64EptVpidCaps;
9291	bool const fInveptSupported = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVEPT);
9292	bool const fTypeSingleCtx = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVEPT_SINGLE_CTX);
9293	bool const fTypeAllCtx = RT_BF_GET(fCaps, VMX_BF_EPT_VPID_CAP_INVEPT_ALL_CTX);
9294
9295	bool afSupportedTypes[4];
9296	afSupportedTypes[0] = false;
9297	afSupportedTypes[1] = fTypeSingleCtx;
9298	afSupportedTypes[2] = fTypeAllCtx;
9299	afSupportedTypes[3] = false;
9300
9301	if ( fInveptSupported
9302	&& !(u64InveptType & ~(uint64_t)VMX_INVEPT_VALID_MASK)
9303	&& afSupportedTypes[u64InveptType & 3])
9304	{ /* likely */ }
9305	else
9306	{
9307	Log(("invept: invalid/unsupported invvpid type %#x -> VMFail\n", u64InveptType));
9308	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invept_TypeInvalid;
9309	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = u64InveptType;
9310	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9311	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9312	}
9313
9314	/*
9315	* Fetch the invept descriptor from guest memory.
9316	*/
9317	RTUINT128U uDesc;
9318	VBOXSTRICTRC rcStrict = iemMemFetchDataU128(pVCpu, &uDesc, iEffSeg, GCPtrInveptDesc);
9319	if (rcStrict == VINF_SUCCESS)
9320	{
9321	/*
9322	* Validate the descriptor.
9323	*
9324	* The Intel spec. does not explicit say the INVEPT instruction fails when reserved
9325	* bits in the descriptor are set, but it -does- for INVVPID. Until we test on real
9326	* hardware, it's assumed INVEPT behaves the same as INVVPID in this regard. It's
9327	* better to be strict in our emulation until proven otherwise.
9328	*/
9329	if (uDesc.s.Hi)
9330	{
9331	Log(("invept: reserved bits set in invept descriptor %#RX64 -> VMFail\n", uDesc.s.Hi));
9332	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invept_DescRsvd;
9333	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = uDesc.s.Hi;
9334	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9335	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9336	}
9337
9338	/*
9339	* Flush TLB mappings based on the EPT type.
9340	*/
9341	if (u64InveptType == VMXTLBFLUSHEPT_SINGLE_CONTEXT)
9342	{
9343	uint64_t const GCPhysEptPtr = uDesc.s.Lo;
9344	int const rc = iemVmxVmentryCheckEptPtr(pVCpu, GCPhysEptPtr, NULL /* enmDiag */);
9345	if (RT_SUCCESS(rc))
9346	{ /* likely */ }
9347	else
9348	{
9349	Log(("invept: EPTP invalid %#RX64 -> VMFail\n", GCPhysEptPtr));
9350	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Invept_EptpInvalid;
9351	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysEptPtr;
9352	iemVmxVmFail(pVCpu, VMXINSTRERR_INVEPT_INVVPID_INVALID_OPERAND);
9353	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9354	}
9355	}
9356
9357	/** @todo PGM support for EPT tags? Currently just flush everything. */
9358	IEM_CTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR3);
9359	uint64_t const uCr3 = pVCpu->cpum.GstCtx.cr3;
9360	PGMFlushTLB(pVCpu, uCr3, true /* fGlobal */);
9361
9362	iemVmxVmSucceed(pVCpu);
9363	rcStrict = iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9364	}
9365
9366	return rcStrict;
9367	}
9368
9369
9370	/**
9371	* Interface for HM and EM to emulate the INVEPT instruction.
9372	*
9373	* @returns Strict VBox status code.
9374	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
9375	* @param pExitInfo Pointer to the VM-exit information.
9376	* @thread EMT(pVCpu)
9377	*/
9378	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedInvept(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
9379	{
9380	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 4);
9381	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
9382	Assert(pExitInfo);
9383
9384	iemInitExec(pVCpu, 0 /fExecOpts/);
9385
9386	uint8_t const iEffSeg = pExitInfo->InstrInfo.Inv.iSegReg;
9387	uint8_t const cbInstr = pExitInfo->cbInstr;
9388	RTGCPTR const GCPtrInveptDesc = pExitInfo->GCPtrEffAddr;
9389	uint64_t const u64InveptType = IEM_IS_64BIT_CODE(pVCpu)
9390	? iemGRegFetchU64(pVCpu, pExitInfo->InstrInfo.Inv.iReg2)
9391	: iemGRegFetchU32(pVCpu, pExitInfo->InstrInfo.Inv.iReg2);
9392	VBOXSTRICTRC rcStrict = iemVmxInvept(pVCpu, cbInstr, iEffSeg, GCPtrInveptDesc, u64InveptType, pExitInfo);
9393	Assert(!pVCpu->iem.s.cActiveMappings);
9394	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
9395	}
9396
9397	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX_EPT */
9398
9399	/**
9400	* VMXON instruction execution worker.
9401	*
9402	* @returns Strict VBox status code.
9403	* @param pVCpu The cross context virtual CPU structure.
9404	* @param cbInstr The instruction length in bytes.
9405	* @param iEffSeg The effective segment register to use with @a
9406	* GCPtrVmxon.
9407	* @param GCPtrVmxon The linear address of the VMXON pointer.
9408	* @param pExitInfo Pointer to the VM-exit information. Optional, can be NULL.
9409	*
9410	* @remarks Common VMX instruction checks are already expected to by the caller,
9411	* i.e. CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
9412	*/
9413	static VBOXSTRICTRC iemVmxVmxon(PVMCPUCC pVCpu, uint8_t cbInstr, uint8_t iEffSeg,
9414	RTGCPHYS GCPtrVmxon, PCVMXVEXITINFO pExitInfo) RT_NOEXCEPT
9415	{
9416	if (!IEM_VMX_IS_ROOT_MODE(pVCpu))
9417	{
9418	/* CPL. */
9419	if (IEM_GET_CPL(pVCpu) == 0)
9420	{ /* likely */ }
9421	else
9422	{
9423	Log(("vmxon: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
9424	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_Cpl;
9425	return iemRaiseGeneralProtectionFault0(pVCpu);
9426	}
9427
9428	/* A20M (A20 Masked) mode. */
9429	if (PGMPhysIsA20Enabled(pVCpu))
9430	{ /* likely */ }
9431	else
9432	{
9433	Log(("vmxon: A20M mode -> #GP(0)\n"));
9434	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_A20M;
9435	return iemRaiseGeneralProtectionFault0(pVCpu);
9436	}
9437
9438	/* CR0. */
9439	{
9440	/*
9441	* CR0 MB1 bits.
9442	*
9443	* We use VMX_V_CR0_FIXED0 below to ensure CR0.PE and CR0.PG are always set
9444	* while executing VMXON. CR0.PE and CR0.PG are only allowed to be clear
9445	* when the guest running in VMX non-root mode with unrestricted-guest control
9446	* enabled in the VMCS.
9447	*/
9448	uint64_t const uCr0Fixed0 = VMX_V_CR0_FIXED0;
9449	if ((pVCpu->cpum.GstCtx.cr0 & uCr0Fixed0) == uCr0Fixed0)
9450	{ /* likely */ }
9451	else
9452	{
9453	Log(("vmxon: CR0 fixed0 bits cleared -> #GP(0)\n"));
9454	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_Cr0Fixed0;
9455	return iemRaiseGeneralProtectionFault0(pVCpu);
9456	}
9457
9458	/* CR0 MBZ bits. */
9459	uint64_t const uCr0Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr0Fixed1;
9460	if (!(pVCpu->cpum.GstCtx.cr0 & ~uCr0Fixed1))
9461	{ /* likely */ }
9462	else
9463	{
9464	Log(("vmxon: CR0 fixed1 bits set -> #GP(0)\n"));
9465	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_Cr0Fixed1;
9466	return iemRaiseGeneralProtectionFault0(pVCpu);
9467	}
9468	}
9469
9470	/* CR4. */
9471	{
9472	/* CR4 MB1 bits. */
9473	uint64_t const uCr4Fixed0 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed0;
9474	if ((pVCpu->cpum.GstCtx.cr4 & uCr4Fixed0) == uCr4Fixed0)
9475	{ /* likely */ }
9476	else
9477	{
9478	Log(("vmxon: CR4 fixed0 bits cleared -> #GP(0)\n"));
9479	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_Cr4Fixed0;
9480	return iemRaiseGeneralProtectionFault0(pVCpu);
9481	}
9482
9483	/* CR4 MBZ bits. */
9484	uint64_t const uCr4Fixed1 = pVCpu->cpum.GstCtx.hwvirt.vmx.Msrs.u64Cr4Fixed1;
9485	if (!(pVCpu->cpum.GstCtx.cr4 & ~uCr4Fixed1))
9486	{ /* likely */ }
9487	else
9488	{
9489	Log(("vmxon: CR4 fixed1 bits set -> #GP(0)\n"));
9490	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_Cr4Fixed1;
9491	return iemRaiseGeneralProtectionFault0(pVCpu);
9492	}
9493	}
9494
9495	/* Feature control MSR's LOCK and VMXON bits. */
9496	uint64_t const uMsrFeatCtl = CPUMGetGuestIa32FeatCtrl(pVCpu);
9497	if ((uMsrFeatCtl & (MSR_IA32_FEATURE_CONTROL_LOCK \| MSR_IA32_FEATURE_CONTROL_VMXON))
9498	== (MSR_IA32_FEATURE_CONTROL_LOCK \| MSR_IA32_FEATURE_CONTROL_VMXON))
9499	{ /* likely */ }
9500	else
9501	{
9502	Log(("vmxon: Feature control lock bit or VMXON bit cleared -> #GP(0)\n"));
9503	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_MsrFeatCtl;
9504	return iemRaiseGeneralProtectionFault0(pVCpu);
9505	}
9506
9507	/* Get the VMXON pointer from the location specified by the source memory operand. */
9508	RTGCPHYS GCPhysVmxon;
9509	VBOXSTRICTRC rcStrict = iemMemFetchDataU64(pVCpu, &GCPhysVmxon, iEffSeg, GCPtrVmxon);
9510	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
9511	{ /* likely */ }
9512	else
9513	{
9514	Log(("vmxon: Failed to read VMXON region physaddr from %#RGv, rc=%Rrc\n", GCPtrVmxon, VBOXSTRICTRC_VAL(rcStrict)));
9515	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_PtrMap;
9516	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPtrVmxon;
9517	return rcStrict;
9518	}
9519
9520	/* VMXON region pointer alignment. */
9521	if (!(GCPhysVmxon & X86_PAGE_4K_OFFSET_MASK))
9522	{ /* likely */ }
9523	else
9524	{
9525	Log(("vmxon: VMXON region pointer not page-aligned -> VMFailInvalid\n"));
9526	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_PtrAlign;
9527	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmxon;
9528	iemVmxVmFailInvalid(pVCpu);
9529	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9530	}
9531
9532	/* VMXON physical-address width limits. */
9533	if (!(GCPhysVmxon >> IEM_GET_GUEST_CPU_FEATURES(pVCpu)->cVmxMaxPhysAddrWidth))
9534	{ /* likely */ }
9535	else
9536	{
9537	Log(("vmxon: VMXON region pointer extends beyond physical-address width -> VMFailInvalid\n"));
9538	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_PtrWidth;
9539	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmxon;
9540	iemVmxVmFailInvalid(pVCpu);
9541	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9542	}
9543
9544	/* Ensure VMXON region is not MMIO, ROM etc. This is not an Intel requirement but a
9545	restriction imposed by our implementation. */
9546	if (PGMPhysIsGCPhysNormal(pVCpu->CTX_SUFF(pVM), GCPhysVmxon))
9547	{ /* likely */ }
9548	else
9549	{
9550	Log(("vmxon: VMXON region not normal memory -> VMFailInvalid\n"));
9551	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_PtrAbnormal;
9552	pVCpu->cpum.GstCtx.hwvirt.vmx.uDiagAux = GCPhysVmxon;
9553	iemVmxVmFailInvalid(pVCpu);
9554	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9555	}
9556
9557	/* Read the VMCS revision ID from the VMXON region. */
9558	VMXVMCSREVID VmcsRevId;
9559	int rc = PGMPhysSimpleReadGCPhys(pVCpu->CTX_SUFF(pVM), &VmcsRevId, GCPhysVmxon, sizeof(VmcsRevId));
9560	if (RT_SUCCESS(rc))
9561	{ /* likely */ }
9562	else
9563	{
9564	Log(("vmxon: Failed to read VMXON region at %#RGp, rc=%Rrc\n", GCPhysVmxon, rc));
9565	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_PtrReadPhys;
9566	return rc;
9567	}
9568
9569	/* Verify the VMCS revision specified by the guest matches what we reported to the guest. */
9570	if (RT_LIKELY(VmcsRevId.u == VMX_V_VMCS_REVISION_ID))
9571	{ /* likely */ }
9572	else
9573	{
9574	/* Revision ID mismatch. */
9575	if (!VmcsRevId.n.fIsShadowVmcs)
9576	{
9577	Log(("vmxon: VMCS revision mismatch, expected %#RX32 got %#RX32 -> VMFailInvalid\n", VMX_V_VMCS_REVISION_ID,
9578	VmcsRevId.n.u31RevisionId));
9579	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_VmcsRevId;
9580	iemVmxVmFailInvalid(pVCpu);
9581	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9582	}
9583
9584	/* Shadow VMCS disallowed. */
9585	Log(("vmxon: Shadow VMCS -> VMFailInvalid\n"));
9586	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_ShadowVmcs;
9587	iemVmxVmFailInvalid(pVCpu);
9588	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9589	}
9590
9591	/*
9592	* Record that we're in VMX operation, block INIT, block and disable A20M.
9593	*/
9594	pVCpu->cpum.GstCtx.hwvirt.vmx.GCPhysVmxon = GCPhysVmxon;
9595	IEM_VMX_CLEAR_CURRENT_VMCS(pVCpu);
9596	pVCpu->cpum.GstCtx.hwvirt.vmx.fInVmxRootMode = true;
9597
9598	/* Clear address-range monitoring. */
9599	EMMonitorWaitClear(pVCpu);
9600	/** @todo NSTVMX: Intel PT. */
9601
9602	iemVmxVmSucceed(pVCpu);
9603	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9604	}
9605	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9606	{
9607	/* Nested-guest intercept. */
9608	if (pExitInfo)
9609	return iemVmxVmexitInstrWithInfo(pVCpu, pExitInfo);
9610	return iemVmxVmexitInstrNeedsInfo(pVCpu, VMX_EXIT_VMXON, VMXINSTRID_NONE, cbInstr);
9611	}
9612
9613	Assert(IEM_VMX_IS_ROOT_MODE(pVCpu));
9614
9615	/* CPL. */
9616	if (IEM_GET_CPL(pVCpu) > 0)
9617	{
9618	Log(("vmxon: In VMX root mode: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
9619	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_VmxRootCpl;
9620	return iemRaiseGeneralProtectionFault0(pVCpu);
9621	}
9622
9623	/* VMXON when already in VMX root mode. */
9624	iemVmxVmFail(pVCpu, VMXINSTRERR_VMXON_IN_VMXROOTMODE);
9625	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxon_VmxAlreadyRoot;
9626	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9627	}
9628
9629
9630	/**
9631	* Interface for HM and EM to emulate the VMXON instruction.
9632	*
9633	* @returns Strict VBox status code.
9634	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
9635	* @param pExitInfo Pointer to the VM-exit information.
9636	* @thread EMT(pVCpu)
9637	*/
9638	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmxon(PVMCPUCC pVCpu, PCVMXVEXITINFO pExitInfo)
9639	{
9640	Assert(pExitInfo);
9641	IEMEXEC_ASSERT_INSTR_LEN_RETURN(pExitInfo->cbInstr, 3);
9642	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
9643
9644	iemInitExec(pVCpu, 0 /fExecOpts/);
9645
9646	uint8_t const iEffSeg = pExitInfo->InstrInfo.VmxXsave.iSegReg;
9647	uint8_t const cbInstr = pExitInfo->cbInstr;
9648	RTGCPTR const GCPtrVmxon = pExitInfo->GCPtrEffAddr;
9649	VBOXSTRICTRC rcStrict = iemVmxVmxon(pVCpu, cbInstr, iEffSeg, GCPtrVmxon, pExitInfo);
9650	Assert(!pVCpu->iem.s.cActiveMappings);
9651	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
9652	}
9653
9654
9655	/**
9656	* Implements 'VMXOFF'.
9657	*
9658	* @remarks Common VMX instruction checks are already expected to by the caller,
9659	* i.e. CR4.VMXE, Real/V86 mode, EFER/CS.L checks.
9660	*/
9661	IEM_CIMPL_DEF_0(iemCImpl_vmxoff)
9662	{
9663	/* Nested-guest intercept. */
9664	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9665	return iemVmxVmexitInstr(pVCpu, VMX_EXIT_VMXOFF, cbInstr);
9666
9667	/* CPL. */
9668	if (IEM_GET_CPL(pVCpu) == 0)
9669	{ /* likely */ }
9670	else
9671	{
9672	Log(("vmxoff: CPL %u -> #GP(0)\n", IEM_GET_CPL(pVCpu)));
9673	pVCpu->cpum.GstCtx.hwvirt.vmx.enmDiag = kVmxVDiag_Vmxoff_Cpl;
9674	return iemRaiseGeneralProtectionFault0(pVCpu);
9675	}
9676
9677	/* Dual monitor treatment of SMIs and SMM. */
9678	uint64_t const fSmmMonitorCtl = CPUMGetGuestIa32SmmMonitorCtl(pVCpu);
9679	if (!(fSmmMonitorCtl & MSR_IA32_SMM_MONITOR_VALID))
9680	{ /* likely */ }
9681	else
9682	{
9683	iemVmxVmFail(pVCpu, VMXINSTRERR_VMXOFF_DUAL_MON);
9684	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9685	}
9686
9687	/* Record that we're no longer in VMX root operation, block INIT, block and disable A20M. */
9688	pVCpu->cpum.GstCtx.hwvirt.vmx.fInVmxRootMode = false;
9689	Assert(!pVCpu->cpum.GstCtx.hwvirt.vmx.fInVmxNonRootMode);
9690
9691	if (fSmmMonitorCtl & MSR_IA32_SMM_MONITOR_VMXOFF_UNBLOCK_SMI)
9692	{ /** @todo NSTVMX: Unblock SMI. */ }
9693
9694	EMMonitorWaitClear(pVCpu);
9695	/** @todo NSTVMX: Unblock and enable A20M. */
9696
9697	iemVmxVmSucceed(pVCpu);
9698	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9699	}
9700
9701
9702	/**
9703	* Interface for HM and EM to emulate the VMXOFF instruction.
9704	*
9705	* @returns Strict VBox status code.
9706	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
9707	* @param cbInstr The instruction length in bytes.
9708	* @thread EMT(pVCpu)
9709	*/
9710	VMM_INT_DECL(VBOXSTRICTRC) IEMExecDecodedVmxoff(PVMCPUCC pVCpu, uint8_t cbInstr)
9711	{
9712	IEMEXEC_ASSERT_INSTR_LEN_RETURN(cbInstr, 3);
9713	IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI);
9714
9715	iemInitExec(pVCpu, 0 /fExecOpts/);
9716	VBOXSTRICTRC rcStrict = IEM_CIMPL_CALL_0(iemCImpl_vmxoff);
9717	Assert(!pVCpu->iem.s.cActiveMappings);
9718	return iemUninitExecAndFiddleStatusAndMaybeReenter(pVCpu, rcStrict);
9719	}
9720
9721
9722	/**
9723	* Implements 'VMXON'.
9724	*/
9725	IEM_CIMPL_DEF_2(iemCImpl_vmxon, uint8_t, iEffSeg, RTGCPTR, GCPtrVmxon)
9726	{
9727	return iemVmxVmxon(pVCpu, cbInstr, iEffSeg, GCPtrVmxon, NULL /* pExitInfo */);
9728	}
9729
9730
9731	/**
9732	* Implements 'VMLAUNCH'.
9733	*/
9734	IEM_CIMPL_DEF_0(iemCImpl_vmlaunch)
9735	{
9736	return iemVmxVmlaunchVmresume(pVCpu, cbInstr, VMXINSTRID_VMLAUNCH);
9737	}
9738
9739
9740	/**
9741	* Implements 'VMRESUME'.
9742	*/
9743	IEM_CIMPL_DEF_0(iemCImpl_vmresume)
9744	{
9745	return iemVmxVmlaunchVmresume(pVCpu, cbInstr, VMXINSTRID_VMRESUME);
9746	}
9747
9748
9749	/**
9750	* Implements 'VMPTRLD'.
9751	*/
9752	IEM_CIMPL_DEF_2(iemCImpl_vmptrld, uint8_t, iEffSeg, RTGCPTR, GCPtrVmcs)
9753	{
9754	return iemVmxVmptrld(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, NULL /* pExitInfo */);
9755	}
9756
9757
9758	/**
9759	* Implements 'VMPTRST'.
9760	*/
9761	IEM_CIMPL_DEF_2(iemCImpl_vmptrst, uint8_t, iEffSeg, RTGCPTR, GCPtrVmcs)
9762	{
9763	return iemVmxVmptrst(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, NULL /* pExitInfo */);
9764	}
9765
9766
9767	/**
9768	* Implements 'VMCLEAR'.
9769	*/
9770	IEM_CIMPL_DEF_2(iemCImpl_vmclear, uint8_t, iEffSeg, RTGCPTR, GCPtrVmcs)
9771	{
9772	return iemVmxVmclear(pVCpu, cbInstr, iEffSeg, GCPtrVmcs, NULL /* pExitInfo */);
9773	}
9774
9775
9776	/**
9777	* Implements 'VMWRITE' register.
9778	*/
9779	IEM_CIMPL_DEF_2(iemCImpl_vmwrite_reg, uint64_t, u64Val, uint64_t, u64VmcsField)
9780	{
9781	return iemVmxVmwrite(pVCpu, cbInstr, UINT8_MAX /* iEffSeg /, u64Val, u64VmcsField, NULL / pExitInfo */);
9782	}
9783
9784
9785	/**
9786	* Implements 'VMWRITE' memory.
9787	*/
9788	IEM_CIMPL_DEF_3(iemCImpl_vmwrite_mem, uint8_t, iEffSeg, RTGCPTR, GCPtrVal, uint32_t, u64VmcsField)
9789	{
9790	return iemVmxVmwrite(pVCpu, cbInstr, iEffSeg, GCPtrVal, u64VmcsField, NULL /* pExitInfo */);
9791	}
9792
9793
9794	/**
9795	* Implements 'VMREAD' register (64-bit).
9796	*/
9797	IEM_CIMPL_DEF_2(iemCImpl_vmread_reg64, uint64_t *, pu64Dst, uint64_t, u64VmcsField)
9798	{
9799	return iemVmxVmreadReg64(pVCpu, cbInstr, pu64Dst, u64VmcsField, NULL /* pExitInfo */);
9800	}
9801
9802
9803	/**
9804	* Implements 'VMREAD' register (32-bit).
9805	*/
9806	IEM_CIMPL_DEF_2(iemCImpl_vmread_reg32, uint64_t *, pu64Dst, uint32_t, u32VmcsField)
9807	{
9808	VBOXSTRICTRC const rcStrict = iemVmxVmreadReg32(pVCpu, cbInstr, (uint32_t )pu64Dst, u32VmcsField, NULL / pExitInfo */);
9809	/* Zero the high part of the register on success. */
9810	if (rcStrict == VINF_SUCCESS)
9811	pu64Dst = (uint32_t)pu64Dst;
9812	return rcStrict;
9813	}
9814
9815
9816	/**
9817	* Implements 'VMREAD' memory, 64-bit register.
9818	*/
9819	IEM_CIMPL_DEF_3(iemCImpl_vmread_mem_reg64, uint8_t, iEffSeg, RTGCPTR, GCPtrDst, uint32_t, u64VmcsField)
9820	{
9821	return iemVmxVmreadMem(pVCpu, cbInstr, iEffSeg, GCPtrDst, u64VmcsField, NULL /* pExitInfo */);
9822	}
9823
9824
9825	/**
9826	* Implements 'VMREAD' memory, 32-bit register.
9827	*/
9828	IEM_CIMPL_DEF_3(iemCImpl_vmread_mem_reg32, uint8_t, iEffSeg, RTGCPTR, GCPtrDst, uint32_t, u32VmcsField)
9829	{
9830	return iemVmxVmreadMem(pVCpu, cbInstr, iEffSeg, GCPtrDst, u32VmcsField, NULL /* pExitInfo */);
9831	}
9832
9833
9834	/**
9835	* Implements 'INVVPID'.
9836	*/
9837	IEM_CIMPL_DEF_3(iemCImpl_invvpid, uint8_t, iEffSeg, RTGCPTR, GCPtrInvvpidDesc, uint64_t, uInvvpidType)
9838	{
9839	return iemVmxInvvpid(pVCpu, cbInstr, iEffSeg, GCPtrInvvpidDesc, uInvvpidType, NULL /* pExitInfo */);
9840	}
9841
9842
9843	#if defined(VBOX_WITH_NESTED_HWVIRT_VMX_EPT) \|\| defined(VBOX_WITH_IEM_RECOMPILER) /* HACK ALERT: Linking trick. */
9844	/**
9845	* Implements 'INVEPT'.
9846	*/
9847	IEM_CIMPL_DEF_3(iemCImpl_invept, uint8_t, iEffSeg, RTGCPTR, GCPtrInveptDesc, uint64_t, uInveptType)
9848	{
9849	# ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
9850	return iemVmxInvept(pVCpu, cbInstr, iEffSeg, GCPtrInveptDesc, uInveptType, NULL /* pExitInfo */);
9851	# else
9852	RT_NOREF(pVCpu, cbInstr, iEffSeg, GCPtrInveptDesc, uInveptType);
9853	AssertFailedReturn(VERR_IEM_ASPECT_NOT_IMPLEMENTED);
9854	# endif
9855	}
9856	#endif
9857
9858
9859	/**
9860	* Implements VMX's implementation of PAUSE.
9861	*/
9862	IEM_CIMPL_DEF_0(iemCImpl_vmx_pause)
9863	{
9864	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9865	{
9866	VBOXSTRICTRC rcStrict = iemVmxVmexitInstrPause(pVCpu, cbInstr);
9867	if (rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE)
9868	return rcStrict;
9869	}
9870
9871	/*
9872	* Outside VMX non-root operation or if the PAUSE instruction does not cause
9873	* a VM-exit, the instruction operates normally.
9874	*/
9875	return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
9876	}
9877
9878	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
9879
9880
9881	/**
9882	* Implements 'VMCALL'.
9883	*/
9884	IEM_CIMPL_DEF_0(iemCImpl_vmcall)
9885	{
9886	pVCpu->iem.s.cPotentialExits++;
9887
9888	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
9889	/* Nested-guest intercept. */
9890	if (IEM_VMX_IS_NON_ROOT_MODE(pVCpu))
9891	return iemVmxVmexitInstr(pVCpu, VMX_EXIT_VMCALL, cbInstr);
9892	#endif
9893
9894	/* Join forces with vmmcall. */
9895	return IEM_CIMPL_CALL_1(iemCImpl_Hypercall, OP_VMCALL);
9896	}
9897
9898
9899	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
9900
9901	/**
9902	* @callback_method_impl{FNPGMPHYSHANDLER, VMX APIC-access page accesses}
9903	*
9904	* @remarks The @a uUser argument is currently unused.
9905	*/
9906	DECLCALLBACK(VBOXSTRICTRC) iemVmxApicAccessPageHandler(PVMCC pVM, PVMCPUCC pVCpu, RTGCPHYS GCPhysFault, void *pvPhys,
9907	void *pvBuf, size_t cbBuf, PGMACCESSTYPE enmAccessType,
9908	PGMACCESSORIGIN enmOrigin, uint64_t uUser)
9909	{
9910	RT_NOREF3(pvPhys, enmOrigin, uUser);
9911
9912	RTGCPHYS const GCPhysAccessBase = GCPhysFault & ~(RTGCPHYS)GUEST_PAGE_OFFSET_MASK;
9913	if (CPUMIsGuestInVmxNonRootMode(IEM_GET_CTX(pVCpu)))
9914	{
9915	Assert(CPUMIsGuestVmxProcCtls2Set(IEM_GET_CTX(pVCpu), VMX_PROC_CTLS2_VIRT_APIC_ACCESS));
9916	Assert(CPUMGetGuestVmxApicAccessPageAddrEx(IEM_GET_CTX(pVCpu)) == GCPhysAccessBase);
9917
9918	uint32_t const fAccess = enmAccessType == PGMACCESSTYPE_WRITE ? IEM_ACCESS_DATA_W : IEM_ACCESS_DATA_R;
9919	uint16_t const offAccess = GCPhysFault & GUEST_PAGE_OFFSET_MASK;
9920
9921	LogFlowFunc(("Fault at %#RGp (cbBuf=%u fAccess=%#x)\n", GCPhysFault, cbBuf, fAccess));
9922	VBOXSTRICTRC rcStrict = iemVmxVirtApicAccessMem(pVCpu, offAccess, cbBuf, pvBuf, fAccess);
9923	if (RT_FAILURE(rcStrict))
9924	return rcStrict;
9925
9926	/* Any access on this APIC-access page has been handled, caller should not carry out the access. */
9927	return VINF_SUCCESS;
9928	}
9929
9930	LogFunc(("Accessed outside VMX non-root mode, deregistering page handler for %#RGp\n", GCPhysAccessBase));
9931	int rc = PGMHandlerPhysicalDeregister(pVM, GCPhysAccessBase);
9932	if (RT_FAILURE(rc))
9933	return rc;
9934
9935	/* Instruct the caller of this handler to perform the read/write as normal memory. */
9936	return VINF_PGM_HANDLER_DO_DEFAULT;
9937	}
9938
9939
9940	# ifndef IN_RING3
9941	/**
9942	* @callback_method_impl{FNPGMRZPHYSPFHANDLER,
9943	* \#PF access handler callback for guest VMX APIC-access page.}
9944	*/
9945	DECLCALLBACK(VBOXSTRICTRC) iemVmxApicAccessPagePfHandler(PVMCC pVM, PVMCPUCC pVCpu, RTGCUINT uErr, PCPUMCTX pCtx,
9946	RTGCPTR pvFault, RTGCPHYS GCPhysFault, uint64_t uUser)
9947
9948	{
9949	RT_NOREF3(pVM, pCtx, uUser);
9950
9951	/*
9952	* Handle the VMX APIC-access page only when the guest is in VMX non-root mode.
9953	* Otherwise we must deregister the page and allow regular RAM access.
9954	* Failing to do so lands us with endless EPT VM-exits.
9955	*/
9956	RTGCPHYS const GCPhysPage = GCPhysFault & ~(RTGCPHYS)GUEST_PAGE_OFFSET_MASK;
9957	if (CPUMIsGuestInVmxNonRootMode(IEM_GET_CTX(pVCpu)))
9958	{
9959	Assert(CPUMIsGuestVmxProcCtls2Set(IEM_GET_CTX(pVCpu), VMX_PROC_CTLS2_VIRT_APIC_ACCESS));
9960	Assert(CPUMGetGuestVmxApicAccessPageAddrEx(IEM_GET_CTX(pVCpu)) == GCPhysPage);
9961
9962	/*
9963	* Check if the access causes an APIC-access VM-exit.
9964	*/
9965	uint32_t fAccess;
9966	if (uErr & X86_TRAP_PF_ID)
9967	fAccess = IEM_ACCESS_INSTRUCTION;
9968	else if (uErr & X86_TRAP_PF_RW)
9969	fAccess = IEM_ACCESS_DATA_W;
9970	else
9971	fAccess = IEM_ACCESS_DATA_R;
9972
9973	RTGCPHYS const GCPhysNestedFault = (RTGCPHYS)pvFault;
9974	uint16_t const offAccess = GCPhysNestedFault & GUEST_PAGE_OFFSET_MASK;
9975	bool const fIntercept = iemVmxVirtApicIsMemAccessIntercepted(pVCpu, offAccess, 1 /* cbAccess */, fAccess);
9976	LogFlowFunc(("#PF at %#RGp (GCPhysNestedFault=%#RGp offAccess=%#x)\n", GCPhysFault, GCPhysNestedFault, offAccess));
9977	if (fIntercept)
9978	{
9979	/*
9980	* Query the source VM-exit (from the execution engine) that caused this access
9981	* within the APIC-access page. Currently only HM is supported.
9982	*/
9983	AssertMsg(VM_IS_HM_ENABLED(pVM),
9984	("VM-exit auxiliary info. fetching not supported for execution engine %d\n", pVM->bMainExecutionEngine));
9985
9986	HMEXITAUX HmExitAux;
9987	RT_ZERO(HmExitAux);
9988	int const rc = HMR0GetExitAuxInfo(pVCpu, &HmExitAux, HMVMX_READ_EXIT_INSTR_LEN
9989	\| HMVMX_READ_EXIT_QUALIFICATION
9990	\| HMVMX_READ_IDT_VECTORING_INFO
9991	\| HMVMX_READ_IDT_VECTORING_ERROR_CODE);
9992	AssertRC(rc);
9993
9994	/*
9995	* Verify the VM-exit reason must be an EPT violation.
9996	* Other accesses should go through the other handler (iemVmxApicAccessPageHandler).
9997	* Refer to @bugref{10092#c33s} for a more detailed explanation.
9998	*/
9999	AssertMsgReturn(HmExitAux.Vmx.uReason == VMX_EXIT_EPT_VIOLATION,
10000	("Unexpected call to APIC-access page #PF handler for %#RGp offAcesss=%u uErr=%#RGx uReason=%u\n",
10001	GCPhysPage, offAccess, uErr, HmExitAux.Vmx.uReason), VERR_IEM_IPE_7);
10002
10003	/*
10004	* Construct the virtual APIC-access VM-exit.
10005	*/
10006	VMXAPICACCESS enmAccess;
10007	if (HmExitAux.Vmx.u64Qual & VMX_EXIT_QUAL_EPT_LINEAR_ADDR_VALID)
10008	{
10009	if (VMX_IDT_VECTORING_INFO_IS_VALID(HmExitAux.Vmx.uIdtVectoringInfo))
10010	enmAccess = VMXAPICACCESS_LINEAR_EVENT_DELIVERY;
10011	else if (fAccess == IEM_ACCESS_INSTRUCTION)
10012	enmAccess = VMXAPICACCESS_LINEAR_INSTR_FETCH;
10013	else if (fAccess & IEM_ACCESS_TYPE_WRITE)
10014	enmAccess = VMXAPICACCESS_LINEAR_WRITE;
10015	else
10016	enmAccess = VMXAPICACCESS_LINEAR_READ;
10017
10018	/* For linear-address accesss the instruction length must be valid. */
10019	AssertMsg(HmExitAux.Vmx.cbInstr > 0,
10020	("Invalid APIC-access VM-exit instruction length. cbInstr=%u\n", HmExitAux.Vmx.cbInstr));
10021	}
10022	else
10023	{
10024	if (VMX_IDT_VECTORING_INFO_IS_VALID(HmExitAux.Vmx.uIdtVectoringInfo))
10025	enmAccess = VMXAPICACCESS_PHYSICAL_EVENT_DELIVERY;
10026	else
10027	{
10028	/** @todo How to distinguish between monitoring/trace vs other instructions
10029	* here? */
10030	enmAccess = VMXAPICACCESS_PHYSICAL_INSTR;
10031	}
10032
10033	/* For physical accesses the instruction length is undefined, we zero it for safety and consistency. */
10034	HmExitAux.Vmx.cbInstr = 0;
10035	}
10036
10037	/*
10038	* Raise the APIC-access VM-exit.
10039	*/
10040	LogFlowFunc(("Raising APIC-access VM-exit from #PF handler at offset %#x\n", offAccess));
10041	VMXVEXITINFO const ExitInfo
10042	= VMXVEXITINFO_INIT_WITH_QUAL_AND_INSTR_LEN(VMX_EXIT_APIC_ACCESS,
10043	RT_BF_MAKE(VMX_BF_EXIT_QUAL_APIC_ACCESS_OFFSET, offAccess)
10044	\| RT_BF_MAKE(VMX_BF_EXIT_QUAL_APIC_ACCESS_TYPE, enmAccess),
10045	HmExitAux.Vmx.cbInstr);
10046	VMXVEXITEVENTINFO const ExitEventInfo = VMXVEXITEVENTINFO_INIT_ONLY_IDT(HmExitAux.Vmx.uIdtVectoringInfo,
10047	HmExitAux.Vmx.uIdtVectoringErrCode);
10048	VBOXSTRICTRC const rcStrict = iemVmxVmexitApicAccessWithInfo(pVCpu, &ExitInfo, &ExitEventInfo);
10049	return iemExecStatusCodeFiddling(pVCpu, rcStrict);
10050	}
10051
10052	/*
10053	* The access isn't intercepted, which means it needs to be virtualized.
10054	*
10055	* This requires emulating the instruction because we need the bytes being
10056	* read/written by the instruction not just the offset being accessed within
10057	* the APIC-access page (which we derive from the faulting address).
10058	*/
10059	LogFlowFunc(("Access at offset %#x not intercepted -> VINF_EM_RAW_EMULATE_INSTR\n", offAccess));
10060	return VINF_EM_RAW_EMULATE_INSTR;
10061	}
10062
10063	/** @todo This isn't ideal but works for now as nested-hypervisors generally play
10064	* nice because the spec states that this page should be modified only when
10065	* no CPU refers to it VMX non-root mode. Nonetheless, we could use an atomic
10066	* reference counter to ensure the aforementioned condition before
10067	* de-registering the page. */
10068	LogFunc(("Accessed outside VMX non-root mode, deregistering page handler for %#RGp\n", GCPhysPage));
10069	int const rc = PGMHandlerPhysicalDeregister(pVM, GCPhysPage);
10070	if (RT_FAILURE(rc))
10071	return rc;
10072
10073	return VINF_SUCCESS;
10074	}
10075	# endif /* !IN_RING3 */
10076
10077	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
10078

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source: vbox/trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp@ 100998

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