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source: vbox/trunk/src/VBox/VMM/include/HMInternal.h@ 87389

Last change on this file since 87389 was 87389, checked in by vboxsync, 4 years ago

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1/* $Id: HMInternal.h 87389 2021-01-22 23:32:07Z vboxsync $ */
2/** @file
3 * HM - Internal header file.
4 */
5
6/*
7 * Copyright (C) 2006-2020 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18#ifndef VMM_INCLUDED_SRC_include_HMInternal_h
19#define VMM_INCLUDED_SRC_include_HMInternal_h
20#ifndef RT_WITHOUT_PRAGMA_ONCE
21# pragma once
22#endif
23
24#include <VBox/cdefs.h>
25#include <VBox/types.h>
26#include <VBox/vmm/stam.h>
27#include <VBox/dis.h>
28#include <VBox/vmm/hm.h>
29#include <VBox/vmm/hm_vmx.h>
30#include <VBox/vmm/hm_svm.h>
31#include <VBox/vmm/pgm.h>
32#include <VBox/vmm/cpum.h>
33#include <VBox/vmm/trpm.h>
34#include <iprt/memobj.h>
35#include <iprt/cpuset.h>
36#include <iprt/mp.h>
37#include <iprt/avl.h>
38#include <iprt/string.h>
39
40#if HC_ARCH_BITS == 32
41# error "32-bit hosts are no longer supported. Go back to 6.0 or earlier!"
42#endif
43
44/** @def HM_PROFILE_EXIT_DISPATCH
45 * Enables profiling of the VM exit handler dispatching. */
46#if 0 || defined(DOXYGEN_RUNNING)
47# define HM_PROFILE_EXIT_DISPATCH
48#endif
49
50RT_C_DECLS_BEGIN
51
52
53/** @defgroup grp_hm_int Internal
54 * @ingroup grp_hm
55 * @internal
56 * @{
57 */
58
59/** @name HM_CHANGED_XXX
60 * HM CPU-context changed flags.
61 *
62 * These flags are used to keep track of which registers and state has been
63 * modified since they were imported back into the guest-CPU context.
64 *
65 * @{
66 */
67#define HM_CHANGED_HOST_CONTEXT UINT64_C(0x0000000000000001)
68#define HM_CHANGED_GUEST_RIP UINT64_C(0x0000000000000004)
69#define HM_CHANGED_GUEST_RFLAGS UINT64_C(0x0000000000000008)
70
71#define HM_CHANGED_GUEST_RAX UINT64_C(0x0000000000000010)
72#define HM_CHANGED_GUEST_RCX UINT64_C(0x0000000000000020)
73#define HM_CHANGED_GUEST_RDX UINT64_C(0x0000000000000040)
74#define HM_CHANGED_GUEST_RBX UINT64_C(0x0000000000000080)
75#define HM_CHANGED_GUEST_RSP UINT64_C(0x0000000000000100)
76#define HM_CHANGED_GUEST_RBP UINT64_C(0x0000000000000200)
77#define HM_CHANGED_GUEST_RSI UINT64_C(0x0000000000000400)
78#define HM_CHANGED_GUEST_RDI UINT64_C(0x0000000000000800)
79#define HM_CHANGED_GUEST_R8_R15 UINT64_C(0x0000000000001000)
80#define HM_CHANGED_GUEST_GPRS_MASK UINT64_C(0x0000000000001ff0)
81
82#define HM_CHANGED_GUEST_ES UINT64_C(0x0000000000002000)
83#define HM_CHANGED_GUEST_CS UINT64_C(0x0000000000004000)
84#define HM_CHANGED_GUEST_SS UINT64_C(0x0000000000008000)
85#define HM_CHANGED_GUEST_DS UINT64_C(0x0000000000010000)
86#define HM_CHANGED_GUEST_FS UINT64_C(0x0000000000020000)
87#define HM_CHANGED_GUEST_GS UINT64_C(0x0000000000040000)
88#define HM_CHANGED_GUEST_SREG_MASK UINT64_C(0x000000000007e000)
89
90#define HM_CHANGED_GUEST_GDTR UINT64_C(0x0000000000080000)
91#define HM_CHANGED_GUEST_IDTR UINT64_C(0x0000000000100000)
92#define HM_CHANGED_GUEST_LDTR UINT64_C(0x0000000000200000)
93#define HM_CHANGED_GUEST_TR UINT64_C(0x0000000000400000)
94#define HM_CHANGED_GUEST_TABLE_MASK UINT64_C(0x0000000000780000)
95
96#define HM_CHANGED_GUEST_CR0 UINT64_C(0x0000000000800000)
97#define HM_CHANGED_GUEST_CR2 UINT64_C(0x0000000001000000)
98#define HM_CHANGED_GUEST_CR3 UINT64_C(0x0000000002000000)
99#define HM_CHANGED_GUEST_CR4 UINT64_C(0x0000000004000000)
100#define HM_CHANGED_GUEST_CR_MASK UINT64_C(0x0000000007800000)
101
102#define HM_CHANGED_GUEST_APIC_TPR UINT64_C(0x0000000008000000)
103#define HM_CHANGED_GUEST_EFER_MSR UINT64_C(0x0000000010000000)
104
105#define HM_CHANGED_GUEST_DR0_DR3 UINT64_C(0x0000000020000000)
106#define HM_CHANGED_GUEST_DR6 UINT64_C(0x0000000040000000)
107#define HM_CHANGED_GUEST_DR7 UINT64_C(0x0000000080000000)
108#define HM_CHANGED_GUEST_DR_MASK UINT64_C(0x00000000e0000000)
109
110#define HM_CHANGED_GUEST_X87 UINT64_C(0x0000000100000000)
111#define HM_CHANGED_GUEST_SSE_AVX UINT64_C(0x0000000200000000)
112#define HM_CHANGED_GUEST_OTHER_XSAVE UINT64_C(0x0000000400000000)
113#define HM_CHANGED_GUEST_XCRx UINT64_C(0x0000000800000000)
114
115#define HM_CHANGED_GUEST_KERNEL_GS_BASE UINT64_C(0x0000001000000000)
116#define HM_CHANGED_GUEST_SYSCALL_MSRS UINT64_C(0x0000002000000000)
117#define HM_CHANGED_GUEST_SYSENTER_CS_MSR UINT64_C(0x0000004000000000)
118#define HM_CHANGED_GUEST_SYSENTER_EIP_MSR UINT64_C(0x0000008000000000)
119#define HM_CHANGED_GUEST_SYSENTER_ESP_MSR UINT64_C(0x0000010000000000)
120#define HM_CHANGED_GUEST_SYSENTER_MSR_MASK UINT64_C(0x000001c000000000)
121#define HM_CHANGED_GUEST_TSC_AUX UINT64_C(0x0000020000000000)
122#define HM_CHANGED_GUEST_OTHER_MSRS UINT64_C(0x0000040000000000)
123#define HM_CHANGED_GUEST_ALL_MSRS ( HM_CHANGED_GUEST_EFER \
124 | HM_CHANGED_GUEST_KERNEL_GS_BASE \
125 | HM_CHANGED_GUEST_SYSCALL_MSRS \
126 | HM_CHANGED_GUEST_SYSENTER_MSR_MASK \
127 | HM_CHANGED_GUEST_TSC_AUX \
128 | HM_CHANGED_GUEST_OTHER_MSRS)
129
130#define HM_CHANGED_GUEST_HWVIRT UINT64_C(0x0000080000000000)
131#define HM_CHANGED_GUEST_MASK UINT64_C(0x00000ffffffffffc)
132
133#define HM_CHANGED_KEEPER_STATE_MASK UINT64_C(0xffff000000000000)
134
135#define HM_CHANGED_VMX_XCPT_INTERCEPTS UINT64_C(0x0001000000000000)
136#define HM_CHANGED_VMX_GUEST_AUTO_MSRS UINT64_C(0x0002000000000000)
137#define HM_CHANGED_VMX_GUEST_LAZY_MSRS UINT64_C(0x0004000000000000)
138#define HM_CHANGED_VMX_ENTRY_EXIT_CTLS UINT64_C(0x0008000000000000)
139#define HM_CHANGED_VMX_MASK UINT64_C(0x000f000000000000)
140#define HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE ( HM_CHANGED_GUEST_DR_MASK \
141 | HM_CHANGED_VMX_GUEST_LAZY_MSRS)
142
143#define HM_CHANGED_SVM_XCPT_INTERCEPTS UINT64_C(0x0001000000000000)
144#define HM_CHANGED_SVM_MASK UINT64_C(0x0001000000000000)
145#define HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE HM_CHANGED_GUEST_DR_MASK
146
147#define HM_CHANGED_ALL_GUEST ( HM_CHANGED_GUEST_MASK \
148 | HM_CHANGED_KEEPER_STATE_MASK)
149
150/** Mask of what state might have changed when IEM raised an exception.
151 * This is a based on IEM_CPUMCTX_EXTRN_XCPT_MASK. */
152#define HM_CHANGED_RAISED_XCPT_MASK ( HM_CHANGED_GUEST_GPRS_MASK \
153 | HM_CHANGED_GUEST_RIP \
154 | HM_CHANGED_GUEST_RFLAGS \
155 | HM_CHANGED_GUEST_SS \
156 | HM_CHANGED_GUEST_CS \
157 | HM_CHANGED_GUEST_CR0 \
158 | HM_CHANGED_GUEST_CR3 \
159 | HM_CHANGED_GUEST_CR4 \
160 | HM_CHANGED_GUEST_APIC_TPR \
161 | HM_CHANGED_GUEST_EFER_MSR \
162 | HM_CHANGED_GUEST_DR7 \
163 | HM_CHANGED_GUEST_CR2 \
164 | HM_CHANGED_GUEST_SREG_MASK \
165 | HM_CHANGED_GUEST_TABLE_MASK)
166
167#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
168/** Mask of what state might have changed when \#VMEXIT is emulated. */
169# define HM_CHANGED_SVM_VMEXIT_MASK ( HM_CHANGED_GUEST_RSP \
170 | HM_CHANGED_GUEST_RAX \
171 | HM_CHANGED_GUEST_RIP \
172 | HM_CHANGED_GUEST_RFLAGS \
173 | HM_CHANGED_GUEST_CS \
174 | HM_CHANGED_GUEST_SS \
175 | HM_CHANGED_GUEST_DS \
176 | HM_CHANGED_GUEST_ES \
177 | HM_CHANGED_GUEST_GDTR \
178 | HM_CHANGED_GUEST_IDTR \
179 | HM_CHANGED_GUEST_CR_MASK \
180 | HM_CHANGED_GUEST_EFER_MSR \
181 | HM_CHANGED_GUEST_DR6 \
182 | HM_CHANGED_GUEST_DR7 \
183 | HM_CHANGED_GUEST_OTHER_MSRS \
184 | HM_CHANGED_GUEST_HWVIRT \
185 | HM_CHANGED_SVM_MASK \
186 | HM_CHANGED_GUEST_APIC_TPR)
187
188/** Mask of what state might have changed when VMRUN is emulated. */
189# define HM_CHANGED_SVM_VMRUN_MASK HM_CHANGED_SVM_VMEXIT_MASK
190#endif
191#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
192/** Mask of what state might have changed when VM-exit is emulated.
193 *
194 * This is currently unused, but keeping it here in case we can get away a bit more
195 * fine-grained state handling.
196 *
197 * @note Update IEM_CPUMCTX_EXTRN_VMX_VMEXIT_MASK when this changes. */
198# define HM_CHANGED_VMX_VMEXIT_MASK ( HM_CHANGED_GUEST_CR0 | HM_CHANGED_GUEST_CR3 | HM_CHANGED_GUEST_CR4 \
199 | HM_CHANGED_GUEST_DR7 | HM_CHANGED_GUEST_DR6 \
200 | HM_CHANGED_GUEST_EFER_MSR \
201 | HM_CHANGED_GUEST_SYSENTER_MSR_MASK \
202 | HM_CHANGED_GUEST_OTHER_MSRS /* for PAT MSR */ \
203 | HM_CHANGED_GUEST_RIP | HM_CHANGED_GUEST_RSP | HM_CHANGED_GUEST_RFLAGS \
204 | HM_CHANGED_GUEST_SREG_MASK \
205 | HM_CHANGED_GUEST_TR \
206 | HM_CHANGED_GUEST_LDTR | HM_CHANGED_GUEST_GDTR | HM_CHANGED_GUEST_IDTR \
207 | HM_CHANGED_GUEST_HWVIRT )
208#endif
209/** @} */
210
211/** Maximum number of exit reason statistics counters. */
212#define MAX_EXITREASON_STAT 0x100
213#define MASK_EXITREASON_STAT 0xff
214#define MASK_INJECT_IRQ_STAT 0xff
215
216/** Size for the EPT identity page table (1024 4 MB pages to cover the entire address space). */
217#define HM_EPT_IDENTITY_PG_TABLE_SIZE PAGE_SIZE
218/** Size of the TSS structure + 2 pages for the IO bitmap + end byte. */
219#define HM_VTX_TSS_SIZE (sizeof(VBOXTSS) + 2 * PAGE_SIZE + 1)
220/** Total guest mapped memory needed. */
221#define HM_VTX_TOTAL_DEVHEAP_MEM (HM_EPT_IDENTITY_PG_TABLE_SIZE + HM_VTX_TSS_SIZE)
222
223
224/** @name Macros for enabling and disabling preemption.
225 * These are really just for hiding the RTTHREADPREEMPTSTATE and asserting that
226 * preemption has already been disabled when there is no context hook.
227 * @{ */
228#ifdef VBOX_STRICT
229# define HM_DISABLE_PREEMPT(a_pVCpu) \
230 RTTHREADPREEMPTSTATE PreemptStateInternal = RTTHREADPREEMPTSTATE_INITIALIZER; \
231 Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD) || VMMR0ThreadCtxHookIsEnabled((a_pVCpu))); \
232 RTThreadPreemptDisable(&PreemptStateInternal)
233#else
234# define HM_DISABLE_PREEMPT(a_pVCpu) \
235 RTTHREADPREEMPTSTATE PreemptStateInternal = RTTHREADPREEMPTSTATE_INITIALIZER; \
236 RTThreadPreemptDisable(&PreemptStateInternal)
237#endif /* VBOX_STRICT */
238#define HM_RESTORE_PREEMPT() do { RTThreadPreemptRestore(&PreemptStateInternal); } while(0)
239/** @} */
240
241
242/** @name HM saved state versions.
243 * @{
244 */
245#define HM_SAVED_STATE_VERSION HM_SAVED_STATE_VERSION_SVM_NESTED_HWVIRT
246#define HM_SAVED_STATE_VERSION_SVM_NESTED_HWVIRT 6
247#define HM_SAVED_STATE_VERSION_TPR_PATCHING 5
248#define HM_SAVED_STATE_VERSION_NO_TPR_PATCHING 4
249#define HM_SAVED_STATE_VERSION_2_0_X 3
250/** @} */
251
252
253/**
254 * HM physical (host) CPU information.
255 */
256typedef struct HMPHYSCPU
257{
258 /** The CPU ID. */
259 RTCPUID idCpu;
260 /** The VM_HSAVE_AREA (AMD-V) / VMXON region (Intel) memory backing. */
261 RTR0MEMOBJ hMemObj;
262 /** The physical address of the first page in hMemObj (it's a
263 * physcially contigous allocation if it spans multiple pages). */
264 RTHCPHYS HCPhysMemObj;
265 /** The address of the memory (for pfnEnable). */
266 void *pvMemObj;
267 /** Current ASID (AMD-V) / VPID (Intel). */
268 uint32_t uCurrentAsid;
269 /** TLB flush count. */
270 uint32_t cTlbFlushes;
271 /** Whether to flush each new ASID/VPID before use. */
272 bool fFlushAsidBeforeUse;
273 /** Configured for VT-x or AMD-V. */
274 bool fConfigured;
275 /** Set if the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE hack is active. */
276 bool fIgnoreAMDVInUseError;
277 /** Whether CR4.VMXE was already enabled prior to us enabling it. */
278 bool fVmxeAlreadyEnabled;
279 /** In use by our code. (for power suspend) */
280 bool volatile fInUse;
281#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
282 /** Nested-guest union (put data common to SVM/VMX outside the union). */
283 union
284 {
285 /** Nested-guest SVM data. */
286 struct
287 {
288 /** The active nested-guest MSR permission bitmap memory backing. */
289 RTR0MEMOBJ hNstGstMsrpm;
290 /** The physical address of the first page in hNstGstMsrpm (physcially
291 * contiguous allocation). */
292 RTHCPHYS HCPhysNstGstMsrpm;
293 /** The address of the active nested-guest MSRPM. */
294 void *pvNstGstMsrpm;
295 } svm;
296 /** @todo Nested-VMX. */
297 } n;
298#endif
299} HMPHYSCPU;
300/** Pointer to HMPHYSCPU struct. */
301typedef HMPHYSCPU *PHMPHYSCPU;
302/** Pointer to a const HMPHYSCPU struct. */
303typedef const HMPHYSCPU *PCHMPHYSCPU;
304
305/**
306 * TPR-instruction type.
307 */
308typedef enum
309{
310 HMTPRINSTR_INVALID,
311 HMTPRINSTR_READ,
312 HMTPRINSTR_READ_SHR4,
313 HMTPRINSTR_WRITE_REG,
314 HMTPRINSTR_WRITE_IMM,
315 HMTPRINSTR_JUMP_REPLACEMENT,
316 /** The usual 32-bit paranoia. */
317 HMTPRINSTR_32BIT_HACK = 0x7fffffff
318} HMTPRINSTR;
319
320/**
321 * TPR patch information.
322 */
323typedef struct
324{
325 /** The key is the address of patched instruction. (32 bits GC ptr) */
326 AVLOU32NODECORE Core;
327 /** Original opcode. */
328 uint8_t aOpcode[16];
329 /** Instruction size. */
330 uint32_t cbOp;
331 /** Replacement opcode. */
332 uint8_t aNewOpcode[16];
333 /** Replacement instruction size. */
334 uint32_t cbNewOp;
335 /** Instruction type. */
336 HMTPRINSTR enmType;
337 /** Source operand. */
338 uint32_t uSrcOperand;
339 /** Destination operand. */
340 uint32_t uDstOperand;
341 /** Number of times the instruction caused a fault. */
342 uint32_t cFaults;
343 /** Patch address of the jump replacement. */
344 RTGCPTR32 pJumpTarget;
345} HMTPRPATCH;
346/** Pointer to HMTPRPATCH. */
347typedef HMTPRPATCH *PHMTPRPATCH;
348/** Pointer to a const HMTPRPATCH. */
349typedef const HMTPRPATCH *PCHMTPRPATCH;
350
351
352/**
353 * Makes a HMEXITSTAT::uKey value from a program counter and an exit code.
354 *
355 * @returns 64-bit key
356 * @param a_uPC The RIP + CS.BASE value of the exit.
357 * @param a_uExit The exit code.
358 * @todo Add CPL?
359 */
360#define HMEXITSTAT_MAKE_KEY(a_uPC, a_uExit) (((a_uPC) & UINT64_C(0x0000ffffffffffff)) | (uint64_t)(a_uExit) << 48)
361
362typedef struct HMEXITINFO
363{
364 /** See HMEXITSTAT_MAKE_KEY(). */
365 uint64_t uKey;
366 /** Number of recent hits (depreciates with time). */
367 uint32_t volatile cHits;
368 /** The age + lock. */
369 uint16_t volatile uAge;
370 /** Action or action table index. */
371 uint16_t iAction;
372} HMEXITINFO;
373AssertCompileSize(HMEXITINFO, 16); /* Lots of these guys, so don't add any unnecessary stuff! */
374
375typedef struct HMEXITHISTORY
376{
377 /** The exit timestamp. */
378 uint64_t uTscExit;
379 /** The index of the corresponding HMEXITINFO entry.
380 * UINT32_MAX if none (too many collisions, race, whatever). */
381 uint32_t iExitInfo;
382 /** Figure out later, needed for padding now. */
383 uint32_t uSomeClueOrSomething;
384} HMEXITHISTORY;
385
386/**
387 * Switcher function, HC to the special 64-bit RC.
388 *
389 * @param pVM The cross context VM structure.
390 * @param offCpumVCpu Offset from pVM->cpum to pVM->aCpus[idCpu].cpum.
391 * @returns Return code indicating the action to take.
392 */
393typedef DECLCALLBACKTYPE(int, FNHMSWITCHERHC,(PVM pVM, uint32_t offCpumVCpu));
394/** Pointer to switcher function. */
395typedef FNHMSWITCHERHC *PFNHMSWITCHERHC;
396
397/** @def HM_UNION_NM
398 * For compilers (like DTrace) that does not grok nameless unions, we have a
399 * little hack to make them palatable.
400 */
401/** @def HM_STRUCT_NM
402 * For compilers (like DTrace) that does not grok nameless structs (it is
403 * non-standard C++), we have a little hack to make them palatable.
404 */
405/** @def HM_NAMELESS_UNION_TAG
406 * For tagging a nameless union so tstASMStructs.cpp can find check the nested
407 * structures within the union.
408 */
409#ifdef VBOX_FOR_DTRACE_LIB
410# define HM_UNION_NM(a_Nm) a_Nm
411# define HM_STRUCT_NM(a_Nm) a_Nm
412# define HM_NAMELESS_UNION_TAG(a_Tag)
413#elif defined(IPRT_WITHOUT_NAMED_UNIONS_AND_STRUCTS)
414# define HM_UNION_NM(a_Nm) a_Nm
415# define HM_STRUCT_NM(a_Nm) a_Nm
416# define HM_NAMELESS_UNION_TAG(a_Tag) a_Tag
417#else
418# define HM_UNION_NM(a_Nm)
419# define HM_STRUCT_NM(a_Nm)
420# define HM_NAMELESS_UNION_TAG(a_Tag)
421#endif
422
423/**
424 * HM event.
425 *
426 * VT-x and AMD-V common event injection structure.
427 */
428typedef struct HMEVENT
429{
430 /** Whether the event is pending. */
431 uint32_t fPending;
432 /** The error-code associated with the event. */
433 uint32_t u32ErrCode;
434 /** The length of the instruction in bytes (only relevant for software
435 * interrupts or software exceptions). */
436 uint32_t cbInstr;
437 /** Alignment. */
438 uint32_t u32Padding;
439 /** The encoded event (VM-entry interruption-information for VT-x or EVENTINJ
440 * for SVM). */
441 uint64_t u64IntInfo;
442 /** Guest virtual address if this is a page-fault event. */
443 RTGCUINTPTR GCPtrFaultAddress;
444} HMEVENT;
445/** Pointer to a HMEVENT struct. */
446typedef HMEVENT *PHMEVENT;
447/** Pointer to a const HMEVENT struct. */
448typedef const HMEVENT *PCHMEVENT;
449AssertCompileSizeAlignment(HMEVENT, 8);
450
451/**
452 * HM VM Instance data.
453 * Changes to this must checked against the padding of the hm union in VM!
454 */
455typedef struct HM
456{
457 /** Set if nested paging is enabled. */
458 bool fNestedPaging;
459 /** Set when we've initialized VMX or SVM. */
460 bool fInitialized;
461 /** Set if large pages are enabled (requires nested paging). */
462 bool fLargePages;
463 /** Set if we can support 64-bit guests or not. */
464 bool fAllow64BitGuests;
465 /** Set when TPR patching is allowed. */
466 bool fTprPatchingAllowed;
467 /** Set when we initialize VT-x or AMD-V once for all CPUs. */
468 bool fGlobalInit;
469 /** Set when TPR patching is active. */
470 bool fTPRPatchingActive;
471 /** Set when the debug facility has breakpoints/events enabled that requires
472 * us to use the debug execution loop in ring-0. */
473 bool fUseDebugLoop;
474 /** Set if hardware APIC virtualization is enabled. */
475 bool fVirtApicRegs;
476 /** Set if posted interrupt processing is enabled. */
477 bool fPostedIntrs;
478 /** Set if indirect branch prediction barrier on VM exit. */
479 bool fIbpbOnVmExit;
480 /** Set if indirect branch prediction barrier on VM entry. */
481 bool fIbpbOnVmEntry;
482 /** Set if level 1 data cache should be flushed on VM entry. */
483 bool fL1dFlushOnVmEntry;
484 /** Set if level 1 data cache should be flushed on EMT scheduling. */
485 bool fL1dFlushOnSched;
486 /** Set if host manages speculation control settings. */
487 bool fSpecCtrlByHost;
488 /** Set if MDS related buffers should be cleared on VM entry. */
489 bool fMdsClearOnVmEntry;
490 /** Set if MDS related buffers should be cleared on EMT scheduling. */
491 bool fMdsClearOnSched;
492 /** Alignment padding. */
493 bool afPaddingMinus1[7];
494
495 /** Maximum ASID allowed. */
496 uint32_t uMaxAsid;
497 /** The maximum number of resumes loops allowed in ring-0 (safety precaution).
498 * This number is set much higher when RTThreadPreemptIsPending is reliable. */
499 uint32_t cMaxResumeLoops;
500
501 /** Host kernel flags that HM might need to know (SUPKERNELFEATURES_XXX). */
502 uint32_t fHostKernelFeatures;
503
504 /** Size of the guest patch memory block. */
505 uint32_t cbGuestPatchMem;
506 /** Guest allocated memory for patching purposes. */
507 RTGCPTR pGuestPatchMem;
508 /** Current free pointer inside the patch block. */
509 RTGCPTR pFreeGuestPatchMem;
510
511 struct
512 {
513 /** Set by the ring-0 side of HM to indicate VMX is supported by the
514 * CPU. */
515 bool fSupported;
516 /** Set when we've enabled VMX. */
517 bool fEnabled;
518 /** Set if VPID is supported. */
519 bool fVpid;
520 /** Set if VT-x VPID is allowed. */
521 bool fAllowVpid;
522 /** Set if unrestricted guest execution is in use (real and protected mode
523 * without paging). */
524 bool fUnrestrictedGuest;
525 /** Set if the preemption timer is in use or not. */
526 bool fUsePreemptTimer;
527 /** The shift mask employed by the VMX-Preemption timer. */
528 uint8_t cPreemptTimerShift;
529 /** Padding. */
530 bool afPadding0;
531
532 /** Virtual address of the APIC-access page. */
533 R0PTRTYPE(uint8_t *) pbApicAccess;
534 /** Pointer to the VMREAD bitmap. */
535 R0PTRTYPE(void *) pvVmreadBitmap;
536 /** Pointer to the VMWRITE bitmap. */
537 R0PTRTYPE(void *) pvVmwriteBitmap;
538
539 /** Pointer to the shadow VMCS read-only fields array. */
540 R0PTRTYPE(uint32_t *) paShadowVmcsRoFields;
541 /** Pointer to the shadow VMCS read/write fields array. */
542 R0PTRTYPE(uint32_t *) paShadowVmcsFields;
543 /** Number of elements in the shadow VMCS read-only fields array. */
544 uint32_t cShadowVmcsRoFields;
545 /** Number of elements in the shadow VMCS read-write fields array. */
546 uint32_t cShadowVmcsFields;
547
548 /** Tagged-TLB flush type. */
549 VMXTLBFLUSHTYPE enmTlbFlushType;
550 /** Flush type to use for INVEPT. */
551 VMXTLBFLUSHEPT enmTlbFlushEpt;
552 /** Flush type to use for INVVPID. */
553 VMXTLBFLUSHVPID enmTlbFlushVpid;
554
555 /** Pause-loop exiting (PLE) gap in ticks. */
556 uint32_t cPleGapTicks;
557 /** Pause-loop exiting (PLE) window in ticks. */
558 uint32_t cPleWindowTicks;
559 uint32_t u32Alignment0;
560
561 /** Host CR4 value (set by ring-0 VMX init) */
562 uint64_t u64HostCr4;
563 /** Host SMM monitor control (set by ring-0 VMX init) */
564 uint64_t u64HostSmmMonitorCtl;
565 /** Host EFER value (set by ring-0 VMX init) */
566 uint64_t u64HostMsrEfer;
567 /** Whether the CPU supports VMCS fields for swapping EFER. */
568 bool fSupportsVmcsEfer;
569 /** Whether to use VMCS shadowing. */
570 bool fUseVmcsShadowing;
571 /** Set if Last Branch Record (LBR) is enabled. */
572 bool fLbr;
573 uint8_t u8Alignment2[5];
574
575 /** The first valid host LBR branch-from-IP stack range. */
576 uint32_t idLbrFromIpMsrFirst;
577 /** The last valid host LBR branch-from-IP stack range. */
578 uint32_t idLbrFromIpMsrLast;
579
580 /** The first valid host LBR branch-to-IP stack range. */
581 uint32_t idLbrToIpMsrFirst;
582 /** The last valid host LBR branch-to-IP stack range. */
583 uint32_t idLbrToIpMsrLast;
584
585 /** The host LBR TOS (top-of-stack) MSR id. */
586 uint32_t idLbrTosMsr;
587 /** Padding. */
588 uint32_t u32Alignment1;
589
590 /** VMX MSR values. */
591 VMXMSRS Msrs;
592
593 /** Host-physical address for a failing VMXON instruction. */
594 RTHCPHYS HCPhysVmxEnableError;
595 /** Host-physical address of the APIC-access page. */
596 RTHCPHYS HCPhysApicAccess;
597 /** Host-physical address of the VMREAD bitmap. */
598 RTHCPHYS HCPhysVmreadBitmap;
599 /** Host-physical address of the VMWRITE bitmap. */
600 RTHCPHYS HCPhysVmwriteBitmap;
601#ifdef VBOX_WITH_CRASHDUMP_MAGIC
602 /** Host-physical address of the crash-dump scratch area. */
603 RTHCPHYS HCPhysScratch;
604#endif
605
606#ifdef VBOX_WITH_CRASHDUMP_MAGIC
607 /** Pointer to the crash-dump scratch bitmap. */
608 R0PTRTYPE(uint8_t *) pbScratch;
609#endif
610 /** Virtual address of the TSS page used for real mode emulation. */
611 R3PTRTYPE(PVBOXTSS) pRealModeTSS;
612 /** Virtual address of the identity page table used for real mode and protected
613 * mode without paging emulation in EPT mode. */
614 R3PTRTYPE(PX86PD) pNonPagingModeEPTPageTable;
615
616 /** Ring-0 memory object for per-VM VMX structures. */
617 RTR0MEMOBJ hMemObj;
618 } vmx;
619
620 struct
621 {
622 /** Set by the ring-0 side of HM to indicate SVM is supported by the
623 * CPU. */
624 bool fSupported;
625 /** Set when we've enabled SVM. */
626 bool fEnabled;
627 /** Set if erratum 170 affects the AMD cpu. */
628 bool fAlwaysFlushTLB;
629 /** Set when the hack to ignore VERR_SVM_IN_USE is active. */
630 bool fIgnoreInUseError;
631 /** Whether to use virtualized VMSAVE/VMLOAD feature. */
632 bool fVirtVmsaveVmload;
633 /** Whether to use virtual GIF feature. */
634 bool fVGif;
635 /** Whether to use LBR virtualization feature. */
636 bool fLbrVirt;
637 uint8_t u8Alignment0[1];
638
639 /** Physical address of the IO bitmap (12kb). */
640 RTHCPHYS HCPhysIOBitmap;
641 /** R0 memory object for the IO bitmap (12kb). */
642 RTR0MEMOBJ hMemObjIOBitmap;
643 /** Virtual address of the IO bitmap. */
644 R0PTRTYPE(void *) pvIOBitmap;
645
646 /* HWCR MSR (for diagnostics) */
647 uint64_t u64MsrHwcr;
648
649 /** SVM revision. */
650 uint32_t u32Rev;
651 /** SVM feature bits from cpuid 0x8000000a */
652 uint32_t u32Features;
653
654 /** Pause filter counter. */
655 uint16_t cPauseFilter;
656 /** Pause filter treshold in ticks. */
657 uint16_t cPauseFilterThresholdTicks;
658 uint32_t u32Alignment0;
659 } svm;
660
661 /**
662 * AVL tree with all patches (active or disabled) sorted by guest instruction
663 * address.
664 */
665 AVLOU32TREE PatchTree;
666 uint32_t cPatches;
667 HMTPRPATCH aPatches[64];
668
669 /** Last recorded error code during HM ring-0 init. */
670 int32_t rcInit;
671
672 /** HMR0Init was run */
673 bool fHMR0Init;
674 bool u8Alignment1[3];
675
676 STAMCOUNTER StatTprPatchSuccess;
677 STAMCOUNTER StatTprPatchFailure;
678 STAMCOUNTER StatTprReplaceSuccessCr8;
679 STAMCOUNTER StatTprReplaceSuccessVmc;
680 STAMCOUNTER StatTprReplaceFailure;
681} HM;
682/** Pointer to HM VM instance data. */
683typedef HM *PHM;
684AssertCompileMemberAlignment(HM, StatTprPatchSuccess, 8);
685AssertCompileMemberAlignment(HM, vmx, 8);
686AssertCompileMemberAlignment(HM, svm, 8);
687
688
689/** @addtogroup grp_hm_int_svm SVM Internal
690 * @{ */
691/** SVM VMRun function, see SVMR0VMRun(). */
692typedef DECLCALLBACKTYPE(int, FNHMSVMVMRUN,(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhysVMCB));
693/** Pointer to a SVM VMRun function. */
694typedef R0PTRTYPE(FNHMSVMVMRUN *) PFNHMSVMVMRUN;
695/** @} */
696
697
698/** @addtogroup grp_hm_int_vmx VMX Internal
699 * @{ */
700/**
701 * VMX StartVM function.
702 *
703 * @returns VBox status code (no informational stuff).
704 * @param fResume Whether to use VMRESUME (true) or VMLAUNCH (false).
705 * @param pCtx The CPU register context.
706 * @param pvUnused Unused argument.
707 * @param pVM Pointer to the cross context VM structure.
708 * @param pVCpu Pointer to the cross context per-CPU structure.
709 */
710typedef DECLCALLBACKTYPE(int, FNHMVMXSTARTVM,(RTHCUINT fResume, PCPUMCTX pCtx, void *pvUnused, PVMCC pVM, PVMCPUCC pVCpu));
711/** Pointer to a VMX StartVM function. */
712typedef R0PTRTYPE(FNHMVMXSTARTVM *) PFNHMVMXSTARTVM;
713
714/**
715 * VMX VMCS information.
716 *
717 * This structure provides information maintained for and during the executing of a
718 * guest (or nested-guest) VMCS (VM control structure) using hardware-assisted VMX.
719 *
720 * Note! The members here are ordered and aligned based on estimated frequency of
721 * usage and grouped to fit within a cache line in hot code paths. Even subtle
722 * changes here have a noticeable effect in the bootsector benchmarks. Modify with
723 * care.
724 */
725typedef struct VMXVMCSINFO
726{
727 /** @name Auxiliary information.
728 * @{ */
729 /** Ring-0 pointer to the hardware-assisted VMX execution function. */
730 PFNHMVMXSTARTVM pfnStartVM;
731 /** Host-physical address of the EPTP. */
732 RTHCPHYS HCPhysEPTP;
733 /** The VMCS launch state, see VMX_V_VMCS_LAUNCH_STATE_XXX. */
734 uint32_t fVmcsState;
735 /** The VMCS launch state of the shadow VMCS, see VMX_V_VMCS_LAUNCH_STATE_XXX. */
736 uint32_t fShadowVmcsState;
737 /** The host CPU for which its state has been exported to this VMCS. */
738 RTCPUID idHostCpuState;
739 /** The host CPU on which we last executed this VMCS. */
740 RTCPUID idHostCpuExec;
741 /** Number of guest MSRs in the VM-entry MSR-load area. */
742 uint32_t cEntryMsrLoad;
743 /** Number of guest MSRs in the VM-exit MSR-store area. */
744 uint32_t cExitMsrStore;
745 /** Number of host MSRs in the VM-exit MSR-load area. */
746 uint32_t cExitMsrLoad;
747 /** @} */
748
749 /** @name Cache of execution related VMCS fields.
750 * @{ */
751 /** Pin-based VM-execution controls. */
752 uint32_t u32PinCtls;
753 /** Processor-based VM-execution controls. */
754 uint32_t u32ProcCtls;
755 /** Secondary processor-based VM-execution controls. */
756 uint32_t u32ProcCtls2;
757 /** VM-entry controls. */
758 uint32_t u32EntryCtls;
759 /** VM-exit controls. */
760 uint32_t u32ExitCtls;
761 /** Exception bitmap. */
762 uint32_t u32XcptBitmap;
763 /** Page-fault exception error-code mask. */
764 uint32_t u32XcptPFMask;
765 /** Page-fault exception error-code match. */
766 uint32_t u32XcptPFMatch;
767 /** Padding. */
768 uint32_t u32Alignment0;
769 /** TSC offset. */
770 uint64_t u64TscOffset;
771 /** VMCS link pointer. */
772 uint64_t u64VmcsLinkPtr;
773 /** CR0 guest/host mask. */
774 uint64_t u64Cr0Mask;
775 /** CR4 guest/host mask. */
776 uint64_t u64Cr4Mask;
777 /** @} */
778
779 /** @name Host-virtual address of VMCS and related data structures.
780 * @{ */
781 /** The VMCS. */
782 R0PTRTYPE(void *) pvVmcs;
783 /** The shadow VMCS. */
784 R0PTRTYPE(void *) pvShadowVmcs;
785 /** The virtual-APIC page. */
786 R0PTRTYPE(uint8_t *) pbVirtApic;
787 /** The MSR bitmap. */
788 R0PTRTYPE(void *) pvMsrBitmap;
789 /** The VM-entry MSR-load area. */
790 R0PTRTYPE(void *) pvGuestMsrLoad;
791 /** The VM-exit MSR-store area. */
792 R0PTRTYPE(void *) pvGuestMsrStore;
793 /** The VM-exit MSR-load area. */
794 R0PTRTYPE(void *) pvHostMsrLoad;
795 /** @} */
796
797 /** @name Real-mode emulation state.
798 * @{ */
799 /** Set if guest was executing in real mode (extra checks). */
800 bool fWasInRealMode;
801 /** Set if the guest switched to 64-bit mode on a 32-bit host. */
802 bool fSwitchedTo64on32Obsolete;
803 /** Padding. */
804 bool afPadding0[6];
805 struct
806 {
807 X86DESCATTR AttrCS;
808 X86DESCATTR AttrDS;
809 X86DESCATTR AttrES;
810 X86DESCATTR AttrFS;
811 X86DESCATTR AttrGS;
812 X86DESCATTR AttrSS;
813 X86EFLAGS Eflags;
814 bool fRealOnV86Active;
815 bool afPadding1[3];
816 } RealMode;
817 /** @} */
818
819 /** @name Host-physical address of VMCS and related data structures.
820 * @{ */
821 /** The VMCS. */
822 RTHCPHYS HCPhysVmcs;
823 /** The shadow VMCS. */
824 RTHCPHYS HCPhysShadowVmcs;
825 /** The virtual APIC page. */
826 RTHCPHYS HCPhysVirtApic;
827 /** The MSR bitmap. */
828 RTHCPHYS HCPhysMsrBitmap;
829 /** The VM-entry MSR-load area. */
830 RTHCPHYS HCPhysGuestMsrLoad;
831 /** The VM-exit MSR-store area. */
832 RTHCPHYS HCPhysGuestMsrStore;
833 /** The VM-exit MSR-load area. */
834 RTHCPHYS HCPhysHostMsrLoad;
835 /** @} */
836
837 /** @name R0-memory objects address for VMCS and related data structures.
838 * @{ */
839 /** R0-memory object for VMCS and related data structures. */
840 RTR0MEMOBJ hMemObj;
841 /** @} */
842
843 /** @name LBR MSR data.
844 * @{ */
845 /** List of LastBranch-From-IP MSRs. */
846 uint64_t au64LbrFromIpMsr[32];
847 /** List of LastBranch-To-IP MSRs. */
848 uint64_t au64LbrToIpMsr[32];
849 /** The MSR containing the index to the most recent branch record. */
850 uint64_t u64LbrTosMsr;
851 /** @} */
852} VMXVMCSINFO;
853/** Pointer to a VMXVMCSINFO struct. */
854typedef VMXVMCSINFO *PVMXVMCSINFO;
855/** Pointer to a const VMXVMCSINFO struct. */
856typedef const VMXVMCSINFO *PCVMXVMCSINFO;
857AssertCompileSizeAlignment(VMXVMCSINFO, 8);
858AssertCompileMemberAlignment(VMXVMCSINFO, pfnStartVM, 8);
859AssertCompileMemberAlignment(VMXVMCSINFO, u32PinCtls, 4);
860AssertCompileMemberAlignment(VMXVMCSINFO, u64VmcsLinkPtr, 8);
861AssertCompileMemberAlignment(VMXVMCSINFO, pvVmcs, 8);
862AssertCompileMemberAlignment(VMXVMCSINFO, pvShadowVmcs, 8);
863AssertCompileMemberAlignment(VMXVMCSINFO, pbVirtApic, 8);
864AssertCompileMemberAlignment(VMXVMCSINFO, pvMsrBitmap, 8);
865AssertCompileMemberAlignment(VMXVMCSINFO, pvGuestMsrLoad, 8);
866AssertCompileMemberAlignment(VMXVMCSINFO, pvGuestMsrStore, 8);
867AssertCompileMemberAlignment(VMXVMCSINFO, pvHostMsrLoad, 8);
868AssertCompileMemberAlignment(VMXVMCSINFO, HCPhysVmcs, 8);
869AssertCompileMemberAlignment(VMXVMCSINFO, hMemObj, 8);
870
871
872/** @name Host-state restoration flags.
873 * @note If you change these values don't forget to update the assembly
874 * defines as well!
875 * @{
876 */
877#define VMX_RESTORE_HOST_SEL_DS RT_BIT(0)
878#define VMX_RESTORE_HOST_SEL_ES RT_BIT(1)
879#define VMX_RESTORE_HOST_SEL_FS RT_BIT(2)
880#define VMX_RESTORE_HOST_SEL_GS RT_BIT(3)
881#define VMX_RESTORE_HOST_SEL_TR RT_BIT(4)
882#define VMX_RESTORE_HOST_GDTR RT_BIT(5)
883#define VMX_RESTORE_HOST_IDTR RT_BIT(6)
884#define VMX_RESTORE_HOST_GDT_READ_ONLY RT_BIT(7)
885#define VMX_RESTORE_HOST_GDT_NEED_WRITABLE RT_BIT(8)
886/**
887 * This _must_ be the top most bit, so that we can easily that that it and
888 * something else is set w/o having to do two checks like this:
889 * @code
890 * if ( (pVCpu->hm.s.vmx.fRestoreHostFlags & VMX_RESTORE_HOST_REQUIRED)
891 * && (pVCpu->hm.s.vmx.fRestoreHostFlags & ~VMX_RESTORE_HOST_REQUIRED))
892 * @endcode
893 * Instead we can then do:
894 * @code
895 * if (pVCpu->hm.s.vmx.fRestoreHostFlags > VMX_RESTORE_HOST_REQUIRED)
896 * @endcode
897 */
898#define VMX_RESTORE_HOST_REQUIRED RT_BIT(9)
899/** @} */
900
901/**
902 * Host-state restoration structure.
903 *
904 * This holds host-state fields that require manual restoration.
905 * Assembly version found in HMInternal.mac (should be automatically verified).
906 */
907typedef struct VMXRESTOREHOST
908{
909 RTSEL uHostSelDS; /**< 0x00 */
910 RTSEL uHostSelES; /**< 0x02 */
911 RTSEL uHostSelFS; /**< 0x04 */
912 X86XDTR64 HostGdtr; /**< 0x06 - should be aligned by its 64-bit member. */
913 RTSEL uHostSelGS; /**< 0x10 */
914 RTSEL uHostSelTR; /**< 0x12 */
915 uint8_t abPadding0[2]; /**< 0x14 */
916 X86XDTR64 HostGdtrRw; /**< 0x16 - should be aligned by its 64-bit member. */
917 uint8_t abPadding1[6]; /**< 0x20 */
918 X86XDTR64 HostIdtr; /**< 0x26 - should be aligned by its 64-bit member. */
919 uint64_t uHostFSBase; /**< 0x30 */
920 uint64_t uHostGSBase; /**< 0x38 */
921} VMXRESTOREHOST;
922/** Pointer to VMXRESTOREHOST. */
923typedef VMXRESTOREHOST *PVMXRESTOREHOST;
924AssertCompileSize(X86XDTR64, 10);
925AssertCompileMemberOffset(VMXRESTOREHOST, HostGdtr.uAddr, 0x08);
926AssertCompileMemberOffset(VMXRESTOREHOST, HostGdtrRw.uAddr, 0x18);
927AssertCompileMemberOffset(VMXRESTOREHOST, HostIdtr.uAddr, 0x28);
928AssertCompileMemberOffset(VMXRESTOREHOST, uHostFSBase, 0x30);
929AssertCompileSize(VMXRESTOREHOST, 64);
930AssertCompileSizeAlignment(VMXRESTOREHOST, 8);
931
932/** @} */
933
934/**
935 * HM VMCPU Instance data.
936 *
937 * Note! If you change members of this struct, make sure to check if the
938 * assembly counterpart in HMInternal.mac needs to be updated as well.
939 *
940 * Note! The members here are ordered and aligned based on estimated frequency of
941 * usage and grouped to fit within a cache line in hot code paths. Even subtle
942 * changes here have a noticeable effect in the bootsector benchmarks. Modify with
943 * care.
944 */
945typedef struct HMCPU
946{
947 /** Set when the TLB has been checked until we return from the world switch. */
948 bool volatile fCheckedTLBFlush;
949 /** Set when we're using VT-x or AMD-V at that moment. */
950 bool fActive;
951 /** Whether we've completed the inner HM leave function. */
952 bool fLeaveDone;
953 /** Whether we're using the hyper DR7 or guest DR7. */
954 bool fUsingHyperDR7;
955
956 /** Set if we need to flush the TLB during the world switch. */
957 bool fForceTLBFlush;
958 /** Whether we should use the debug loop because of single stepping or special
959 * debug breakpoints / events are armed. */
960 bool fUseDebugLoop;
961 /** Whether we are currently executing in the debug loop.
962 * Mainly for assertions. */
963 bool fUsingDebugLoop;
964 /** Set if we using the debug loop and wish to intercept RDTSC. */
965 bool fDebugWantRdTscExit;
966
967 /** Set if XCR0 needs to be saved/restored when entering/exiting guest code
968 * execution. */
969 bool fLoadSaveGuestXcr0;
970 /** Whether \#UD needs to be intercepted (required by certain GIM providers). */
971 bool fGIMTrapXcptUD;
972 /** Whether \#GP needs to be intercepted for mesa driver workaround. */
973 bool fTrapXcptGpForLovelyMesaDrv;
974 /** Whether we're executing a single instruction. */
975 bool fSingleInstruction;
976
977 /** Set if we need to clear the trap flag because of single stepping. */
978 bool fClearTrapFlag;
979 bool afAlignment0[3];
980
981 /** World switch exit counter. */
982 uint32_t volatile cWorldSwitchExits;
983 /** The last CPU we were executing code on (NIL_RTCPUID for the first time). */
984 RTCPUID idLastCpu;
985 /** TLB flush count. */
986 uint32_t cTlbFlushes;
987 /** Current ASID in use by the VM. */
988 uint32_t uCurrentAsid;
989 /** An additional error code used for some gurus. */
990 uint32_t u32HMError;
991 /** The last exit-to-ring-3 reason. */
992 int32_t rcLastExitToR3;
993 /** CPU-context changed flags (see HM_CHANGED_xxx). */
994 uint64_t fCtxChanged;
995
996 union HM_NAMELESS_UNION_TAG(HMCPUUNION) /* no tag! */
997 {
998 /** VT-x data. */
999 struct HM_NAMELESS_UNION_TAG(HMCPUVMX)
1000 {
1001 /** @name Guest information.
1002 * @{ */
1003 /** Guest VMCS information. */
1004 VMXVMCSINFO VmcsInfo;
1005 /** Nested-guest VMCS information. */
1006 VMXVMCSINFO VmcsInfoNstGst;
1007 /** Whether the nested-guest VMCS was the last current VMCS. */
1008 bool fSwitchedToNstGstVmcs;
1009 /** Whether the static guest VMCS controls has been merged with the
1010 * nested-guest VMCS controls. */
1011 bool fMergedNstGstCtls;
1012 /** Whether the nested-guest VMCS has been copied to the shadow VMCS. */
1013 bool fCopiedNstGstToShadowVmcs;
1014 /** Whether flushing the TLB is required due to switching to/from the
1015 * nested-guest. */
1016 bool fSwitchedNstGstFlushTlb;
1017 /** Alignment. */
1018 bool afAlignment0[4];
1019 /** Cached guest APIC-base MSR for identifying when to map the APIC-access page. */
1020 uint64_t u64GstMsrApicBase;
1021 /** @} */
1022
1023 /** @name Host information.
1024 * @{ */
1025 /** Host LSTAR MSR to restore lazily while leaving VT-x. */
1026 uint64_t u64HostMsrLStar;
1027 /** Host STAR MSR to restore lazily while leaving VT-x. */
1028 uint64_t u64HostMsrStar;
1029 /** Host SF_MASK MSR to restore lazily while leaving VT-x. */
1030 uint64_t u64HostMsrSfMask;
1031 /** Host KernelGS-Base MSR to restore lazily while leaving VT-x. */
1032 uint64_t u64HostMsrKernelGsBase;
1033 /** The mask of lazy MSRs swap/restore state, see VMX_LAZY_MSRS_XXX. */
1034 uint32_t fLazyMsrs;
1035 /** Whether the host MSR values are up-to-date in the auto-load/store MSR area. */
1036 bool fUpdatedHostAutoMsrs;
1037 /** Alignment. */
1038 uint8_t au8Alignment0[3];
1039 /** Which host-state bits to restore before being preempted. */
1040 uint32_t fRestoreHostFlags;
1041 /** Alignment. */
1042 uint32_t u32Alignment0;
1043 /** The host-state restoration structure. */
1044 VMXRESTOREHOST RestoreHost;
1045 /** @} */
1046
1047 /** @name Error reporting and diagnostics.
1048 * @{ */
1049 /** VT-x error-reporting (mainly for ring-3 propagation). */
1050 struct
1051 {
1052 RTCPUID idCurrentCpu;
1053 RTCPUID idEnteredCpu;
1054 RTHCPHYS HCPhysCurrentVmcs;
1055 uint32_t u32VmcsRev;
1056 uint32_t u32InstrError;
1057 uint32_t u32ExitReason;
1058 uint32_t u32GuestIntrState;
1059 } LastError;
1060 /** @} */
1061 } vmx;
1062
1063 /** SVM data. */
1064 struct HM_NAMELESS_UNION_TAG(HMCPUSVM)
1065 {
1066 /** Ring 0 handlers for VT-x. */
1067 PFNHMSVMVMRUN pfnVMRun;
1068
1069 /** Physical address of the host VMCB which holds additional host-state. */
1070 RTHCPHYS HCPhysVmcbHost;
1071 /** R0 memory object for the host VMCB which holds additional host-state. */
1072 RTR0MEMOBJ hMemObjVmcbHost;
1073 /** Padding.
1074 * @todo remove, pointless now */
1075 R0PTRTYPE(void *) pvPadding;
1076
1077 /** Physical address of the guest VMCB. */
1078 RTHCPHYS HCPhysVmcb;
1079 /** R0 memory object for the guest VMCB. */
1080 RTR0MEMOBJ hMemObjVmcb;
1081 /** Pointer to the guest VMCB. */
1082 R0PTRTYPE(PSVMVMCB) pVmcb;
1083
1084 /** Physical address of the MSR bitmap (8 KB). */
1085 RTHCPHYS HCPhysMsrBitmap;
1086 /** R0 memory object for the MSR bitmap (8 KB). */
1087 RTR0MEMOBJ hMemObjMsrBitmap;
1088 /** Pointer to the MSR bitmap. */
1089 R0PTRTYPE(void *) pvMsrBitmap;
1090
1091 /** Whether VTPR with V_INTR_MASKING set is in effect, indicating
1092 * we should check if the VTPR changed on every VM-exit. */
1093 bool fSyncVTpr;
1094 /** Whether to emulate long mode support for sysenter/sysexit like intel CPUs
1095 * does. This means intercepting \#UD to emulate the instructions in
1096 * long-mode and to intercept reads and writes to the SYSENTER MSRs in order to
1097 * preserve the upper 32 bits written to them (AMD will ignore and discard). */
1098 bool fEmulateLongModeSysEnterExit;
1099 uint8_t au8Alignment0[6];
1100
1101 /** Host's TSC_AUX MSR (used when RDTSCP doesn't cause VM-exits). */
1102 uint64_t u64HostTscAux;
1103
1104 /** Cache of the nested-guest's VMCB fields that we modify in order to run the
1105 * nested-guest using AMD-V. This will be restored on \#VMEXIT. */
1106 SVMNESTEDVMCBCACHE NstGstVmcbCache;
1107 } svm;
1108 } HM_UNION_NM(u);
1109
1110 /** Event injection state. */
1111 HMEVENT Event;
1112
1113 /** The CPU ID of the CPU currently owning the VMCS. Set in
1114 * HMR0Enter and cleared in HMR0Leave. */
1115 RTCPUID idEnteredCpu;
1116
1117 /** Current shadow paging mode for updating CR4. */
1118 PGMMODE enmShadowMode;
1119
1120 /** The PAE PDPEs used with Nested Paging (only valid when
1121 * VMCPU_FF_HM_UPDATE_PAE_PDPES is set). */
1122 X86PDPE aPdpes[4];
1123
1124 /** For saving stack space, the disassembler state is allocated here instead of
1125 * on the stack. */
1126 DISCPUSTATE DisState;
1127
1128 STAMPROFILEADV StatEntry;
1129 STAMPROFILEADV StatPreExit;
1130 STAMPROFILEADV StatExitHandling;
1131 STAMPROFILEADV StatExitIO;
1132 STAMPROFILEADV StatExitMovCRx;
1133 STAMPROFILEADV StatExitXcptNmi;
1134 STAMPROFILEADV StatExitVmentry;
1135 STAMPROFILEADV StatImportGuestState;
1136 STAMPROFILEADV StatExportGuestState;
1137 STAMPROFILEADV StatLoadGuestFpuState;
1138 STAMPROFILEADV StatInGC;
1139 STAMPROFILEADV StatPoke;
1140 STAMPROFILEADV StatSpinPoke;
1141 STAMPROFILEADV StatSpinPokeFailed;
1142
1143 STAMCOUNTER StatInjectInterrupt;
1144 STAMCOUNTER StatInjectXcpt;
1145 STAMCOUNTER StatInjectReflect;
1146 STAMCOUNTER StatInjectConvertDF;
1147 STAMCOUNTER StatInjectInterpret;
1148 STAMCOUNTER StatInjectReflectNPF;
1149
1150 STAMCOUNTER StatExitAll;
1151 STAMCOUNTER StatNestedExitAll;
1152 STAMCOUNTER StatExitShadowNM;
1153 STAMCOUNTER StatExitGuestNM;
1154 STAMCOUNTER StatExitShadowPF; /**< Misleading, currently used for MMIO \#PFs as well. */
1155 STAMCOUNTER StatExitShadowPFEM;
1156 STAMCOUNTER StatExitGuestPF;
1157 STAMCOUNTER StatExitGuestUD;
1158 STAMCOUNTER StatExitGuestSS;
1159 STAMCOUNTER StatExitGuestNP;
1160 STAMCOUNTER StatExitGuestTS;
1161 STAMCOUNTER StatExitGuestOF;
1162 STAMCOUNTER StatExitGuestGP;
1163 STAMCOUNTER StatExitGuestDE;
1164 STAMCOUNTER StatExitGuestDF;
1165 STAMCOUNTER StatExitGuestBR;
1166 STAMCOUNTER StatExitGuestAC;
1167 STAMCOUNTER StatExitGuestDB;
1168 STAMCOUNTER StatExitGuestMF;
1169 STAMCOUNTER StatExitGuestBP;
1170 STAMCOUNTER StatExitGuestXF;
1171 STAMCOUNTER StatExitGuestXcpUnk;
1172 STAMCOUNTER StatExitDRxWrite;
1173 STAMCOUNTER StatExitDRxRead;
1174 STAMCOUNTER StatExitCR0Read;
1175 STAMCOUNTER StatExitCR2Read;
1176 STAMCOUNTER StatExitCR3Read;
1177 STAMCOUNTER StatExitCR4Read;
1178 STAMCOUNTER StatExitCR8Read;
1179 STAMCOUNTER StatExitCR0Write;
1180 STAMCOUNTER StatExitCR2Write;
1181 STAMCOUNTER StatExitCR3Write;
1182 STAMCOUNTER StatExitCR4Write;
1183 STAMCOUNTER StatExitCR8Write;
1184 STAMCOUNTER StatExitRdmsr;
1185 STAMCOUNTER StatExitWrmsr;
1186 STAMCOUNTER StatExitClts;
1187 STAMCOUNTER StatExitXdtrAccess;
1188 STAMCOUNTER StatExitLmsw;
1189 STAMCOUNTER StatExitIOWrite;
1190 STAMCOUNTER StatExitIORead;
1191 STAMCOUNTER StatExitIOStringWrite;
1192 STAMCOUNTER StatExitIOStringRead;
1193 STAMCOUNTER StatExitIntWindow;
1194 STAMCOUNTER StatExitExtInt;
1195 STAMCOUNTER StatExitHostNmiInGC;
1196 STAMCOUNTER StatExitHostNmiInGCIpi;
1197 STAMCOUNTER StatExitPreemptTimer;
1198 STAMCOUNTER StatExitTprBelowThreshold;
1199 STAMCOUNTER StatExitTaskSwitch;
1200 STAMCOUNTER StatExitApicAccess;
1201 STAMCOUNTER StatExitReasonNpf;
1202
1203 STAMCOUNTER StatNestedExitReasonNpf;
1204
1205 STAMCOUNTER StatFlushPage;
1206 STAMCOUNTER StatFlushPageManual;
1207 STAMCOUNTER StatFlushPhysPageManual;
1208 STAMCOUNTER StatFlushTlb;
1209 STAMCOUNTER StatFlushTlbNstGst;
1210 STAMCOUNTER StatFlushTlbManual;
1211 STAMCOUNTER StatFlushTlbWorldSwitch;
1212 STAMCOUNTER StatNoFlushTlbWorldSwitch;
1213 STAMCOUNTER StatFlushEntire;
1214 STAMCOUNTER StatFlushAsid;
1215 STAMCOUNTER StatFlushNestedPaging;
1216 STAMCOUNTER StatFlushTlbInvlpgVirt;
1217 STAMCOUNTER StatFlushTlbInvlpgPhys;
1218 STAMCOUNTER StatTlbShootdown;
1219 STAMCOUNTER StatTlbShootdownFlush;
1220
1221 STAMCOUNTER StatSwitchPendingHostIrq;
1222 STAMCOUNTER StatSwitchTprMaskedIrq;
1223 STAMCOUNTER StatSwitchGuestIrq;
1224 STAMCOUNTER StatSwitchHmToR3FF;
1225 STAMCOUNTER StatSwitchVmReq;
1226 STAMCOUNTER StatSwitchPgmPoolFlush;
1227 STAMCOUNTER StatSwitchDma;
1228 STAMCOUNTER StatSwitchExitToR3;
1229 STAMCOUNTER StatSwitchLongJmpToR3;
1230 STAMCOUNTER StatSwitchMaxResumeLoops;
1231 STAMCOUNTER StatSwitchHltToR3;
1232 STAMCOUNTER StatSwitchApicAccessToR3;
1233 STAMCOUNTER StatSwitchPreempt;
1234 STAMCOUNTER StatSwitchNstGstVmexit;
1235
1236 STAMCOUNTER StatTscParavirt;
1237 STAMCOUNTER StatTscOffset;
1238 STAMCOUNTER StatTscIntercept;
1239
1240 STAMCOUNTER StatDRxArmed;
1241 STAMCOUNTER StatDRxContextSwitch;
1242 STAMCOUNTER StatDRxIoCheck;
1243
1244 STAMCOUNTER StatExportMinimal;
1245 STAMCOUNTER StatExportFull;
1246 STAMCOUNTER StatLoadGuestFpu;
1247 STAMCOUNTER StatExportHostState;
1248
1249 STAMCOUNTER StatVmxCheckBadRmSelBase;
1250 STAMCOUNTER StatVmxCheckBadRmSelLimit;
1251 STAMCOUNTER StatVmxCheckBadRmSelAttr;
1252 STAMCOUNTER StatVmxCheckBadV86SelBase;
1253 STAMCOUNTER StatVmxCheckBadV86SelLimit;
1254 STAMCOUNTER StatVmxCheckBadV86SelAttr;
1255 STAMCOUNTER StatVmxCheckRmOk;
1256 STAMCOUNTER StatVmxCheckBadSel;
1257 STAMCOUNTER StatVmxCheckBadRpl;
1258 STAMCOUNTER StatVmxCheckPmOk;
1259
1260#ifdef VBOX_WITH_STATISTICS
1261 R3PTRTYPE(PSTAMCOUNTER) paStatExitReason;
1262 R0PTRTYPE(PSTAMCOUNTER) paStatExitReasonR0;
1263 R3PTRTYPE(PSTAMCOUNTER) paStatInjectedIrqs;
1264 R0PTRTYPE(PSTAMCOUNTER) paStatInjectedIrqsR0;
1265 R3PTRTYPE(PSTAMCOUNTER) paStatInjectedXcpts;
1266 R0PTRTYPE(PSTAMCOUNTER) paStatInjectedXcptsR0;
1267 R3PTRTYPE(PSTAMCOUNTER) paStatNestedExitReason;
1268 R0PTRTYPE(PSTAMCOUNTER) paStatNestedExitReasonR0;
1269#endif
1270#ifdef HM_PROFILE_EXIT_DISPATCH
1271 STAMPROFILEADV StatExitDispatch;
1272#endif
1273} HMCPU;
1274/** Pointer to HM VMCPU instance data. */
1275typedef HMCPU *PHMCPU;
1276AssertCompileMemberAlignment(HMCPU, fCheckedTLBFlush, 4);
1277AssertCompileMemberAlignment(HMCPU, fForceTLBFlush, 4);
1278AssertCompileMemberAlignment(HMCPU, cWorldSwitchExits, 4);
1279AssertCompileMemberAlignment(HMCPU, fCtxChanged, 8);
1280AssertCompileMemberAlignment(HMCPU, HM_UNION_NM(u.) vmx, 8);
1281AssertCompileMemberAlignment(HMCPU, HM_UNION_NM(u.) vmx.VmcsInfo, 8);
1282AssertCompileMemberAlignment(HMCPU, HM_UNION_NM(u.) vmx.VmcsInfoNstGst, 8);
1283AssertCompileMemberAlignment(HMCPU, HM_UNION_NM(u.) vmx.RestoreHost, 8);
1284AssertCompileMemberAlignment(HMCPU, HM_UNION_NM(u.) svm, 8);
1285AssertCompileMemberAlignment(HMCPU, Event, 8);
1286
1287#ifdef IN_RING0
1288VMMR0_INT_DECL(PHMPHYSCPU) hmR0GetCurrentCpu(void);
1289VMMR0_INT_DECL(int) hmR0EnterCpu(PVMCPUCC pVCpu);
1290
1291# ifdef VBOX_STRICT
1292# define HM_DUMP_REG_FLAGS_GPRS RT_BIT(0)
1293# define HM_DUMP_REG_FLAGS_FPU RT_BIT(1)
1294# define HM_DUMP_REG_FLAGS_MSRS RT_BIT(2)
1295# define HM_DUMP_REG_FLAGS_ALL (HM_DUMP_REG_FLAGS_GPRS | HM_DUMP_REG_FLAGS_FPU | HM_DUMP_REG_FLAGS_MSRS)
1296
1297VMMR0_INT_DECL(void) hmR0DumpRegs(PVMCPUCC pVCpu, uint32_t fFlags);
1298VMMR0_INT_DECL(void) hmR0DumpDescriptor(PCX86DESCHC pDesc, RTSEL Sel, const char *pszMsg);
1299# endif
1300
1301DECLASM(void) hmR0MdsClear(void);
1302#endif /* IN_RING0 */
1303
1304
1305/** @addtogroup grp_hm_int_svm SVM Internal
1306 * @{ */
1307VMM_INT_DECL(int) hmEmulateSvmMovTpr(PVMCC pVM, PVMCPUCC pVCpu);
1308
1309/**
1310 * Prepares for and executes VMRUN (64-bit register context).
1311 *
1312 * @returns VBox status code.
1313 * @param pVM The cross context VM structure. (Not used.)
1314 * @param pVCpu The cross context virtual CPU structure.
1315 * @param HCPhyspVMCB Physical address of the VMCB.
1316 *
1317 * @remarks With spectre mitigations and the usual need for speed (/ micro
1318 * optimizations), we have a bunch of variations of this code depending
1319 * on a few precoditions. In release builds, the code is entirely
1320 * without conditionals. Debug builds have a couple of assertions that
1321 * shouldn't ever be triggered.
1322 *
1323 * @{
1324 */
1325DECLASM(int) hmR0SvmVmRun_SansXcr0_SansIbpbEntry_SansIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1326DECLASM(int) hmR0SvmVmRun_WithXcr0_SansIbpbEntry_SansIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1327DECLASM(int) hmR0SvmVmRun_SansXcr0_WithIbpbEntry_SansIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1328DECLASM(int) hmR0SvmVmRun_WithXcr0_WithIbpbEntry_SansIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1329DECLASM(int) hmR0SvmVmRun_SansXcr0_SansIbpbEntry_WithIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1330DECLASM(int) hmR0SvmVmRun_WithXcr0_SansIbpbEntry_WithIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1331DECLASM(int) hmR0SvmVmRun_SansXcr0_WithIbpbEntry_WithIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1332DECLASM(int) hmR0SvmVmRun_WithXcr0_WithIbpbEntry_WithIbpbExit(PVMCC pVM, PVMCPUCC pVCpu, RTHCPHYS HCPhyspVMCB);
1333/** @} */
1334
1335/** @} */
1336
1337
1338/** @addtogroup grp_hm_int_vmx VMX Internal
1339 * @{ */
1340VMM_INT_DECL(PVMXVMCSINFO) hmGetVmxActiveVmcsInfo(PVMCPU pVCpu);
1341
1342/**
1343 * Restores some host-state fields that need not be done on every VM-exit.
1344 *
1345 * @returns VBox status code.
1346 * @param fRestoreHostFlags Flags of which host registers needs to be
1347 * restored.
1348 * @param pRestoreHost Pointer to the host-restore structure.
1349 */
1350DECLASM(int) VMXRestoreHostState(uint32_t fRestoreHostFlags, PVMXRESTOREHOST pRestoreHost);
1351
1352# ifdef VBOX_WITH_KERNEL_USING_XMM
1353DECLASM(int) hmR0VMXStartVMWrapXMM(RTHCUINT fResume, PCPUMCTX pCtx, void *pvUnused, PVMCC pVM, PVMCPUCC pVCpu,
1354 PFNHMVMXSTARTVM pfnStartVM);
1355# endif
1356/** @} */
1357
1358/** @} */
1359
1360RT_C_DECLS_END
1361
1362#endif /* !VMM_INCLUDED_SRC_include_HMInternal_h */
1363
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