NEMInternal.h@ 108379

最後變更在這個檔案從108379是 107931,由 vboxsync 提交於 2 月前
VMM/NEM-win: Only export & import IA32_SPEC_CTRL if the host supports it and we're exposing the register to the guest. (AMD regression from r167064.) jiraref:VBP-947 bugref:10738
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1	/* $Id: NEMInternal.h 107931 2025-01-24 10:00:36Z vboxsync $ */
2	/** @file
3	* NEM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2018-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.alldomusa.eu.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	#ifndef VMM_INCLUDED_SRC_include_NEMInternal_h
29	#define VMM_INCLUDED_SRC_include_NEMInternal_h
30	#ifndef RT_WITHOUT_PRAGMA_ONCE
31	# pragma once
32	#endif
33
34	#include <VBox/cdefs.h>
35	#include <VBox/types.h>
36	#include <VBox/vmm/nem.h>
37	#include <VBox/vmm/cpum.h> /* For CPUMCPUVENDOR. */
38	#include <VBox/vmm/stam.h>
39	#include <VBox/vmm/vmapi.h>
40	#ifdef RT_OS_WINDOWS
41	# include <iprt/nt/hyperv.h>
42	# include <iprt/critsect.h>
43	#elif defined(RT_OS_DARWIN)
44	# ifdef VBOX_VMM_TARGET_ARMV8
45	# include <Hypervisor/Hypervisor.h>
46	# else
47	# include "VMXInternal.h"
48	# endif
49	#endif
50
51	RT_C_DECLS_BEGIN
52
53
54	/** @defgroup grp_nem_int Internal
55	* @ingroup grp_nem
56	* @internal
57	* @{
58	*/
59
60	#if defined(VBOX_WITH_NATIVE_NEM) && !defined(VBOX_WITH_PGM_NEM_MODE)
61	# error "VBOX_WITH_NATIVE_NEM requires VBOX_WITH_PGM_NEM_MODE to be defined"
62	#endif
63
64
65	#ifdef RT_OS_WINDOWS
66	/*
67	* Windows: Code configuration.
68	*/
69	/* nothing at the moment */
70
71	/**
72	* Windows VID I/O control information.
73	*/
74	typedef struct NEMWINIOCTL
75	{
76	/** The I/O control function number. */
77	uint32_t uFunction;
78	uint32_t cbInput;
79	uint32_t cbOutput;
80	} NEMWINIOCTL;
81
82	/** @name Windows: Our two-bit physical page state for PGMPAGE
83	* @{ */
84	# define NEM_WIN_PAGE_STATE_NOT_SET 0
85	# define NEM_WIN_PAGE_STATE_UNMAPPED 1
86	# define NEM_WIN_PAGE_STATE_READABLE 2
87	# define NEM_WIN_PAGE_STATE_WRITABLE 3
88	/** @} */
89
90	/** Windows: Checks if a_GCPhys is subject to the limited A20 gate emulation. */
91	# define NEM_WIN_IS_SUBJECT_TO_A20(a_GCPhys) ((RTGCPHYS)((a_GCPhys) - _1M) < (RTGCPHYS)_64K)
92	/** Windows: Checks if a_GCPhys is relevant to the limited A20 gate emulation. */
93	# define NEM_WIN_IS_RELEVANT_TO_A20(a_GCPhys) \
94	( ((RTGCPHYS)((a_GCPhys) - _1M) < (RTGCPHYS)_64K) \|\| ((RTGCPHYS)(a_GCPhys) < (RTGCPHYS)_64K) )
95
96	/** The CPUMCTX_EXTRN_XXX mask for IEM. */
97	# define NEM_WIN_CPUMCTX_EXTRN_MASK_FOR_IEM ( IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_INHIBIT_INT \
98	\| CPUMCTX_EXTRN_INHIBIT_NMI )
99	/** The CPUMCTX_EXTRN_XXX mask for IEM when raising exceptions. */
100	# define NEM_WIN_CPUMCTX_EXTRN_MASK_FOR_IEM_XCPT (IEM_CPUMCTX_EXTRN_XCPT_MASK \| NEM_WIN_CPUMCTX_EXTRN_MASK_FOR_IEM)
101
102	/** @name Windows: Interrupt window flags (NEM_WIN_INTW_F_XXX).
103	* @{ */
104	# define NEM_WIN_INTW_F_NMI UINT8_C(0x01)
105	# define NEM_WIN_INTW_F_REGULAR UINT8_C(0x02)
106	# define NEM_WIN_INTW_F_PRIO_MASK UINT8_C(0x3c)
107	# define NEM_WIN_INTW_F_PRIO_SHIFT 2
108	/** @} */
109
110	#endif /* RT_OS_WINDOWS */
111
112
113	#ifdef RT_OS_DARWIN
114	# ifndef VBOX_VMM_TARGET_ARMV8
115	/** vCPU ID declaration to avoid dragging in HV headers here. */
116	typedef unsigned hv_vcpuid_t;
117	/** The HV VM memory space ID (ASID). */
118	typedef unsigned hv_vm_space_t;
119	# endif
120
121
122	/** @name Darwin: Our two-bit physical page state for PGMPAGE
123	* @{ */
124	# define NEM_DARWIN_PAGE_STATE_UNMAPPED 0
125	# define NEM_DARWIN_PAGE_STATE_RX 1
126	# define NEM_DARWIN_PAGE_STATE_RW 2
127	# define NEM_DARWIN_PAGE_STATE_RWX 3
128	/** @} */
129
130	/** The CPUMCTX_EXTRN_XXX mask for IEM. */
131	# ifdef VBOX_VMM_TARGET_ARMV8
132	# define NEM_DARWIN_CPUMCTX_EXTRN_MASK_FOR_IEM ( IEM_CPUMCTX_EXTRN_MUST_MASK )
133	# else
134	# define NEM_DARWIN_CPUMCTX_EXTRN_MASK_FOR_IEM ( IEM_CPUMCTX_EXTRN_MUST_MASK \
135	\| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI )
136	# endif
137
138	/** The CPUMCTX_EXTRN_XXX mask for IEM when raising exceptions. */
139	# define NEM_DARWIN_CPUMCTX_EXTRN_MASK_FOR_IEM_XCPT (IEM_CPUMCTX_EXTRN_XCPT_MASK \| NEM_DARWIN_CPUMCTX_EXTRN_MASK_FOR_IEM)
140
141
142	# ifdef VBOX_VMM_TARGET_ARMV8
143	/**
144	* MMIO2 tracking region.
145	*/
146	typedef struct
147	{
148	/* Start of the region. */
149	RTGCPHYS GCPhysStart;
150	/** End of the region. */
151	RTGCPHYS GCPhysLast;
152	/** Whether the region was accessed since last time. */
153	bool fDirty;
154	} NEMHVMMIO2REGION;
155	/** Pointer to a MMIO2 tracking region. */
156	typedef NEMHVMMIO2REGION *PNEMHVMMIO2REGION;
157	# endif
158
159	#endif
160
161
162	/** Trick to make slickedit see the static functions in the template. */
163	#ifndef IN_SLICKEDIT
164	# define NEM_TMPL_STATIC static
165	#else
166	# define NEM_TMPL_STATIC
167	#endif
168
169
170	/**
171	* Generic NEM exit type enumeration for use with EMHistoryAddExit.
172	*
173	* On windows we've got two different set of exit types and they are both jumping
174	* around the place value wise, so EM can use their values.
175	*
176	* @note We only have exit types for exits not covered by EM here.
177	*/
178	typedef enum NEMEXITTYPE
179	{
180	NEMEXITTYPE_INVALID = 0,
181
182	/* Common: */
183	NEMEXITTYPE_INTTERRUPT_WINDOW,
184	NEMEXITTYPE_HALT,
185
186	/* Windows: */
187	NEMEXITTYPE_UNRECOVERABLE_EXCEPTION,
188	NEMEXITTYPE_INVALID_VP_REGISTER_VALUE,
189	NEMEXITTYPE_XCPT_UD,
190	NEMEXITTYPE_XCPT_DB,
191	NEMEXITTYPE_XCPT_BP,
192	NEMEXITTYPE_CANCELED,
193	NEMEXITTYPE_MEMORY_ACCESS,
194
195	/* Linux: */
196	NEMEXITTYPE_INTERNAL_ERROR_EMULATION,
197	NEMEXITTYPE_INTERNAL_ERROR_FATAL,
198	NEMEXITTYPE_INTERRUPTED,
199	NEMEXITTYPE_FAILED_ENTRY,
200
201	/* End of valid types. */
202	NEMEXITTYPE_END
203	} NEMEXITTYPE;
204
205
206	/**
207	* NEM VM Instance data.
208	*/
209	typedef struct NEM
210	{
211	/** NEM_MAGIC. */
212	uint32_t u32Magic;
213
214	/** Set if enabled. */
215	bool fEnabled;
216	/** Set if long mode guests are allowed. */
217	bool fAllow64BitGuests;
218	/** Set when the debug facility has breakpoints/events enabled that requires
219	* us to use the debug execution loop. */
220	bool fUseDebugLoop;
221
222	#ifdef VBOX_VMM_TARGET_ARMV8
223	/** The PPI interrupt number of the vTimer. */
224	uint32_t u32GicPpiVTimer;
225	#endif
226
227	#if defined(RT_OS_LINUX)
228	/** The '/dev/kvm' file descriptor. */
229	int32_t fdKvm;
230	/** The KVM_CREATE_VM file descriptor. */
231	int32_t fdVm;
232
233	/** KVM_GET_VCPU_MMAP_SIZE. */
234	uint32_t cbVCpuMmap;
235	/** KVM_CAP_NR_MEMSLOTS. */
236	uint32_t cMaxMemSlots;
237	# ifdef RT_ARCH_ARM64
238	/** KVM_CAP_ARM_VM_IPA_SIZE. */
239	uint32_t cIpaBits;
240	# else
241	/** KVM_CAP_X86_ROBUST_SINGLESTEP. */
242	bool fRobustSingleStep;
243	# endif
244
245	/** Hint where there might be a free slot. */
246	uint16_t idPrevSlot;
247	/** Memory slot ID allocation bitmap. */
248	uint64_t bmSlotIds[_32K / 8 / sizeof(uint64_t)];
249
250	#elif defined(RT_OS_WINDOWS)
251	/** Set if we've created the EMTs. */
252	bool fCreatedEmts : 1;
253	# ifdef VBOX_VMM_TARGET_ARMV8
254	bool fHypercallExit : 1;
255	bool fGpaAccessFaultExit : 1;
256	/** Cache line flush size as a power of two. */
257	uint8_t cPhysicalAddressWidth;
258	# elif defined(VBOX_VMM_TARGET_X86)
259	/** WHvRunVpExitReasonX64Cpuid is supported. */
260	bool fExtendedMsrExit : 1;
261	/** WHvRunVpExitReasonX64MsrAccess is supported. */
262	bool fExtendedCpuIdExit : 1;
263	/** WHvRunVpExitReasonException is supported. */
264	bool fExtendedXcptExit : 1;
265	/** Copy of WHV_CAPABILITY_FEATURES::SpeculationControl. */
266	bool fSpeculationControl : 1;
267	/** Whether to export/import IA32_SPEC_CTRL. */
268	bool fDoIa32SpecCtrl : 1;
269	# ifdef NEM_WIN_WITH_A20
270	/** Set if we've started more than one CPU and cannot mess with A20. */
271	bool fA20Fixed : 1;
272	/** Set if A20 is enabled. */
273	bool fA20Enabled : 1;
274	# endif
275	# endif
276	/** The reported CPU vendor. */
277	CPUMCPUVENDOR enmCpuVendor;
278	/** Cache line flush size as a power of two. */
279	uint8_t cCacheLineFlushShift;
280	/** The result of WHvCapabilityCodeProcessorFeatures. */
281	union
282	{
283	/** 64-bit view. */
284	uint64_t u64;
285	# ifdef _WINHVAPIDEFS_H_
286	/** Interpreed features. */
287	WHV_PROCESSOR_FEATURES u;
288	# endif
289	} uCpuFeatures;
290
291	/** The partition handle. */
292	# ifdef _WINHVAPIDEFS_H_
293	WHV_PARTITION_HANDLE
294	# else
295	RTHCUINTPTR
296	# endif
297	hPartition;
298	/** The device handle for the partition, for use with Vid APIs or direct I/O
299	* controls. */
300	RTR3PTR hPartitionDevice;
301
302	/** Number of currently mapped pages. */
303	uint32_t volatile cMappedPages;
304	uint32_t u32Padding;
305	STAMCOUNTER StatMapPage;
306	STAMCOUNTER StatUnmapPage;
307	STAMCOUNTER StatMapPageFailed;
308	STAMCOUNTER StatUnmapPageFailed;
309	STAMPROFILE StatProfMapGpaRange;
310	STAMPROFILE StatProfUnmapGpaRange;
311	STAMPROFILE StatProfMapGpaRangePage;
312	STAMPROFILE StatProfUnmapGpaRangePage;
313
314	/** Statistics updated by NEMR0UpdateStatistics. */
315	struct
316	{
317	uint64_t cPagesAvailable;
318	uint64_t cPagesInUse;
319	} R0Stats;
320
321	# ifdef VBOX_VMM_TARGET_ARMV8
322	/** Re-distributor memory region for all vCPUs. */
323	RTGCPHYS GCPhysMmioBaseReDist;
324	/** Number of breakpoints supported (for syncing registers). */
325	uint32_t cBreakpoints;
326	/** Number of watchpoints supported (for syncing registers). */
327	uint32_t cWatchpoints;
328	# endif
329
330	#elif defined(RT_OS_DARWIN)
331	/** Set if we've created the EMTs. */
332	bool fCreatedEmts : 1;
333	/** Set if hv_vm_create() was called successfully. */
334	bool fCreatedVm : 1;
335	/** Set if EL2 is enabled. */
336	bool fEl2Enabled : 1;
337	# ifdef VBOX_VMM_TARGET_ARMV8
338	/** @name vTimer related state.
339	* @{ */
340	/** The counter frequency in Hz as obtained from CNTFRQ_EL0. */
341	uint64_t u64CntFrqHz;
342	/** The vTimer offset programmed. */
343	uint64_t u64VTimerOff;
344	/** Dirty tracking slots. */
345	NEMHVMMIO2REGION aMmio2DirtyTracking[8];
346	/** The vCPU config. */
347	hv_vcpu_config_t hVCpuCfg;
348	/** @} */
349	# elif defined(VBOX_VMM_TARGET_X86)
350	/** Set if hv_vm_space_create() was called successfully. */
351	bool fCreatedAsid : 1;
352	/** Set if Last Branch Record (LBR) is enabled. */
353	bool fLbr;
354	/** The ASID for this VM (only valid if fCreatedAsid is true). */
355	hv_vm_space_t uVmAsid;
356	/** Number of mach time units per NS, for hv_vcpu_run_until(). */
357	uint64_t cMachTimePerNs;
358	/** Pause-loop exiting (PLE) gap in ticks. */
359	uint32_t cPleGapTicks;
360	/** Pause-loop exiting (PLE) window in ticks. */
361	uint32_t cPleWindowTicks;
362
363	/** The host LBR TOS (top-of-stack) MSR id. */
364	uint32_t idLbrTosMsr;
365	/** The host LBR select MSR id. */
366	uint32_t idLbrSelectMsr;
367	/** The host last event record from IP MSR id. */
368	uint32_t idLerFromIpMsr;
369	/** The host last event record to IP MSR id. */
370	uint32_t idLerToIpMsr;
371
372	/** The first valid host LBR branch-from-IP stack range. */
373	uint32_t idLbrFromIpMsrFirst;
374	/** The last valid host LBR branch-from-IP stack range. */
375	uint32_t idLbrFromIpMsrLast;
376
377	/** The first valid host LBR branch-to-IP stack range. */
378	uint32_t idLbrToIpMsrFirst;
379	/** The last valid host LBR branch-to-IP stack range. */
380	uint32_t idLbrToIpMsrLast;
381
382	/** The first valid host LBR info stack range. */
383	uint32_t idLbrInfoMsrFirst;
384	/** The last valid host LBR info stack range. */
385	uint32_t idLbrInfoMsrLast;
386	# endif /* VBOX_VMM_TARGET_X86 */
387
388	STAMCOUNTER StatMapPage;
389	STAMCOUNTER StatUnmapPage;
390	STAMCOUNTER StatMapPageFailed;
391	STAMCOUNTER StatUnmapPageFailed;
392	#endif /* RT_OS_DARWIN */
393	} NEM;
394	/** Pointer to NEM VM instance data. */
395	typedef NEM *PNEM;
396
397	/** NEM::u32Magic value. */
398	#define NEM_MAGIC UINT32_C(0x004d454e)
399	/** NEM::u32Magic value after termination. */
400	#define NEM_MAGIC_DEAD UINT32_C(0xdead1111)
401
402
403	/**
404	* NEM VMCPU Instance data.
405	*/
406	typedef struct NEMCPU
407	{
408	/** NEMCPU_MAGIC. */
409	uint32_t u32Magic;
410	/** Whether \#UD needs to be intercepted and presented to GIM. */
411	bool fGIMTrapXcptUD : 1;
412	/** Whether \#GP needs to be intercept for mesa driver workaround. */
413	bool fTrapXcptGpForLovelyMesaDrv: 1;
414	/** Whether we should use the debug loop because of single stepping or special
415	* debug breakpoints / events are armed. */
416	bool fUseDebugLoop : 1;
417	/** Whether we're executing a single instruction. */
418	bool fSingleInstruction : 1;
419	/** Set if we using the debug loop and wish to intercept RDTSC. */
420	bool fDebugWantRdTscExit : 1;
421	/** Whether we are currently executing in the debug loop.
422	* Mainly for assertions. */
423	bool fUsingDebugLoop : 1;
424	/** Set if we need to clear the trap flag because of single stepping. */
425	bool fClearTrapFlag : 1;
426	/** Whether we're using the hyper DR7 or guest DR7. */
427	bool fUsingHyperDR7 : 1;
428	/** Whether \#DE needs to be intercepted for GIM. */
429	bool fGCMTrapXcptDE : 1;
430	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
431	/** Set if indirect branch prediction barrier on VM exit. */
432	bool fIbpbOnVmExit : 1;
433	/** Set if indirect branch prediction barrier on VM entry. */
434	bool fIbpbOnVmEntry : 1;
435	/** Set if level 1 data cache should be flushed on VM entry. */
436	bool fL1dFlushOnVmEntry : 1;
437	/** Set if level 1 data cache should be flushed on EMT scheduling. */
438	bool fL1dFlushOnSched : 1;
439	/** Set if MDS related buffers should be cleared on VM entry. */
440	bool fMdsClearOnVmEntry : 1;
441	/** Set if MDS related buffers should be cleared on EMT scheduling. */
442	bool fMdsClearOnSched : 1;
443	#endif
444
445	#if defined(RT_OS_LINUX)
446	uint8_t abPadding[3];
447	/** The KVM VCpu file descriptor. */
448	int32_t fdVCpu;
449	/** Pointer to the KVM_RUN data exchange region. */
450	R3PTRTYPE(struct kvm_run *) pRun;
451	# ifdef VBOX_VMM_TARGET_ARMV8
452	/** The IRQ device levels from device_irq_level. */
453	uint64_t fIrqDeviceLvls;
454	/** Status of the IRQ line when last seen. */
455	bool fIrqLastSeen;
456	/** Status of the FIQ line when last seen. */
457	bool fFiqLastSeen;
458	# elif defined(VBOX_VMM_TARGET_X86)
459	/** The MSR_IA32_APICBASE value known to KVM. */
460	uint64_t uKvmApicBase;
461	# endif
462
463	/** @name Statistics
464	* @{ */
465	STAMCOUNTER StatExitTotal;
466	STAMCOUNTER StatExitIo;
467	STAMCOUNTER StatExitMmio;
468	STAMCOUNTER StatExitSetTpr;
469	STAMCOUNTER StatExitTprAccess;
470	STAMCOUNTER StatExitRdMsr;
471	STAMCOUNTER StatExitWrMsr;
472	STAMCOUNTER StatExitIrqWindowOpen;
473	STAMCOUNTER StatExitHalt;
474	STAMCOUNTER StatExitIntr;
475	STAMCOUNTER StatExitHypercall;
476	STAMCOUNTER StatExitDebug;
477	STAMCOUNTER StatExitBusLock;
478	STAMCOUNTER StatExitInternalErrorEmulation;
479	STAMCOUNTER StatExitInternalErrorFatal;
480	# if 0
481	STAMCOUNTER StatExitCpuId;
482	STAMCOUNTER StatExitUnrecoverable;
483	STAMCOUNTER StatGetMsgTimeout;
484	STAMCOUNTER StatStopCpuSuccess;
485	STAMCOUNTER StatStopCpuPending;
486	STAMCOUNTER StatStopCpuPendingAlerts;
487	STAMCOUNTER StatStopCpuPendingOdd;
488	STAMCOUNTER StatCancelChangedState;
489	STAMCOUNTER StatCancelAlertedThread;
490	# endif
491	STAMCOUNTER StatBreakOnCancel;
492	STAMCOUNTER StatBreakOnFFPre;
493	STAMCOUNTER StatBreakOnFFPost;
494	STAMCOUNTER StatBreakOnStatus;
495	STAMCOUNTER StatFlushExitOnReturn;
496	STAMCOUNTER StatFlushExitOnReturn1Loop;
497	STAMCOUNTER StatFlushExitOnReturn2Loops;
498	STAMCOUNTER StatFlushExitOnReturn3Loops;
499	STAMCOUNTER StatFlushExitOnReturn4PlusLoops;
500	STAMCOUNTER StatImportOnDemand;
501	STAMCOUNTER StatImportOnReturn;
502	STAMCOUNTER StatImportOnReturnSkipped;
503	STAMCOUNTER StatImportPendingInterrupt;
504	STAMCOUNTER StatExportPendingInterrupt;
505	STAMCOUNTER StatQueryCpuTick;
506	/** @} */
507
508
509	#elif defined(RT_OS_WINDOWS)
510	# ifdef VBOX_VMM_TARGET_X86
511	/** The current state of the interrupt windows (NEM_WIN_INTW_F_XXX). */
512	uint8_t fCurrentInterruptWindows;
513	/** The desired state of the interrupt windows (NEM_WIN_INTW_F_XXX). */
514	uint8_t fDesiredInterruptWindows;
515	/** Last copy of HV_X64_VP_EXECUTION_STATE::InterruptShadow. */
516	bool fLastInterruptShadow : 1;
517	uint32_t uPadding;
518	/** The VID_MSHAGN_F_XXX flags.
519	* Either VID_MSHAGN_F_HANDLE_MESSAGE \| VID_MSHAGN_F_GET_NEXT_MESSAGE or zero. */
520	uint32_t fHandleAndGetFlags;
521	/** What VidMessageSlotMap returns and is used for passing exit info. */
522	RTR3PTR pvMsgSlotMapping;
523	/** The windows thread handle. */
524	RTR3PTR hNativeThreadHandle;
525	# endif
526
527	/** @name Statistics
528	* @{ */
529	STAMCOUNTER StatExitPortIo;
530	STAMCOUNTER StatExitMemUnmapped;
531	STAMCOUNTER StatExitMemIntercept;
532	STAMCOUNTER StatExitHalt;
533	STAMCOUNTER StatExitInterruptWindow;
534	STAMCOUNTER StatExitCpuId;
535	STAMCOUNTER StatExitMsr;
536	STAMCOUNTER StatExitException;
537	STAMCOUNTER StatExitExceptionBp;
538	STAMCOUNTER StatExitExceptionDb;
539	STAMCOUNTER StatExitExceptionGp;
540	STAMCOUNTER StatExitExceptionGpMesa;
541	STAMCOUNTER StatExitExceptionUd;
542	STAMCOUNTER StatExitExceptionUdHandled;
543	STAMCOUNTER StatExitUnrecoverable;
544	STAMCOUNTER StatGetMsgTimeout;
545	STAMCOUNTER StatStopCpuSuccess;
546	STAMCOUNTER StatStopCpuPending;
547	STAMCOUNTER StatStopCpuPendingAlerts;
548	STAMCOUNTER StatStopCpuPendingOdd;
549	STAMCOUNTER StatCancelChangedState;
550	STAMCOUNTER StatCancelAlertedThread;
551	STAMCOUNTER StatBreakOnCancel;
552	STAMCOUNTER StatBreakOnFFPre;
553	STAMCOUNTER StatBreakOnFFPost;
554	STAMCOUNTER StatBreakOnStatus;
555	STAMCOUNTER StatImportOnDemand;
556	STAMCOUNTER StatImportOnReturn;
557	STAMCOUNTER StatImportOnReturnSkipped;
558	STAMCOUNTER StatQueryCpuTick;
559	/** @} */
560
561	#elif defined(RT_OS_DARWIN)
562	# ifdef VBOX_VMM_TARGET_ARMV8
563	/** The vCPU handle associated with the EMT executing this vCPU. */
564	hv_vcpu_t hVCpu;
565	/** Pointer to the exit information structure. */
566	hv_vcpu_exit_t *pHvExit;
567	/** Flag whether an event is pending. */
568	bool fEventPending;
569	/** Flag whether the vTimer got activated and is masked. */
570	bool fVTimerActivated;
571	/** Flag whether to update the vTimer offset. */
572	bool fVTimerOffUpdate;
573	/** Flag whether the ID registers were synced to the guest context
574	* (for first guest exec call on the EMT after loading the saved state). */
575	bool fIdRegsSynced;
576
577	# elif defined(VBOX_VMM_TARGET_X86)
578	/** The vCPU handle associated with the EMT executing this vCPU. */
579	hv_vcpuid_t hVCpuId;
580
581	/** @name State shared with the VT-x code.
582	* @{ */
583	/** An additional error code used for some gurus. */
584	uint32_t u32HMError;
585	/** The last exit-to-ring-3 reason. */
586	int32_t rcLastExitToR3;
587	/** CPU-context changed flags (see HM_CHANGED_xxx). */
588	uint64_t fCtxChanged;
589
590	/** The guest VMCS information. */
591	VMXVMCSINFO VmcsInfo;
592
593	/** VT-x data. */
594	struct HMCPUVMX
595	{
596	/** @name Guest information.
597	* @{ */
598	/** Guest VMCS information shared with ring-3. */
599	VMXVMCSINFOSHARED VmcsInfo;
600	/** Nested-guest VMCS information shared with ring-3. */
601	VMXVMCSINFOSHARED VmcsInfoNstGst;
602	/** Whether the nested-guest VMCS was the last current VMCS (shadow copy for ring-3).
603	* @see HMR0PERVCPU::vmx.fSwitchedToNstGstVmcs */
604	bool fSwitchedToNstGstVmcsCopyForRing3;
605	/** Whether the static guest VMCS controls has been merged with the
606	* nested-guest VMCS controls. */
607	bool fMergedNstGstCtls;
608	/** Whether the nested-guest VMCS has been copied to the shadow VMCS. */
609	bool fCopiedNstGstToShadowVmcs;
610	/** Whether flushing the TLB is required due to switching to/from the
611	* nested-guest. */
612	bool fSwitchedNstGstFlushTlb;
613	/** Alignment. */
614	bool afAlignment0[4];
615	/** Cached guest APIC-base MSR for identifying when to map the APIC-access page. */
616	uint64_t u64GstMsrApicBase;
617	/** @} */
618
619	/** @name Error reporting and diagnostics.
620	* @{ */
621	/** VT-x error-reporting (mainly for ring-3 propagation). */
622	struct
623	{
624	RTCPUID idCurrentCpu;
625	RTCPUID idEnteredCpu;
626	RTHCPHYS HCPhysCurrentVmcs;
627	uint32_t u32VmcsRev;
628	uint32_t u32InstrError;
629	uint32_t u32ExitReason;
630	uint32_t u32GuestIntrState;
631	} LastError;
632	/** @} */
633	} vmx;
634
635	/** Event injection state. */
636	HMEVENT Event;
637
638	/** Current shadow paging mode for updating CR4.
639	* @todo move later (@bugref{9217}). */
640	PGMMODE enmShadowMode;
641	uint32_t u32TemporaryPadding;
642
643	/** The PAE PDPEs used with Nested Paging (only valid when
644	* VMCPU_FF_HM_UPDATE_PAE_PDPES is set). */
645	X86PDPE aPdpes[4];
646	/** Pointer to the VMX statistics. */
647	PVMXSTATISTICS pVmxStats;
648	# endif /* VBOX_VMM_TARGET_X86 */
649
650	/** @name Statistics
651	* @{ */
652	STAMCOUNTER StatExitAll;
653	STAMCOUNTER StatBreakOnCancel;
654	STAMCOUNTER StatBreakOnFFPre;
655	STAMCOUNTER StatBreakOnFFPost;
656	STAMCOUNTER StatBreakOnStatus;
657	STAMCOUNTER StatImportOnDemand;
658	STAMCOUNTER StatImportOnReturn;
659	STAMCOUNTER StatImportOnReturnSkipped;
660	STAMCOUNTER StatQueryCpuTick;
661	# ifdef VBOX_WITH_STATISTICS
662	STAMPROFILEADV StatProfGstStateImport;
663	STAMPROFILEADV StatProfGstStateExport;
664	# endif
665	/** @} */
666
667	/** @} */
668	#endif /* RT_OS_DARWIN */
669	} NEMCPU;
670	/** Pointer to NEM VMCPU instance data. */
671	typedef NEMCPU *PNEMCPU;
672
673	/** NEMCPU::u32Magic value. */
674	#define NEMCPU_MAGIC UINT32_C(0x4d454e20)
675	/** NEMCPU::u32Magic value after termination. */
676	#define NEMCPU_MAGIC_DEAD UINT32_C(0xdead2222)
677
678
679	#ifdef IN_RING0
680	# ifdef RT_OS_WINDOWS
681	/**
682	* Windows: Hypercall input/ouput page info.
683	*/
684	typedef struct NEMR0HYPERCALLDATA
685	{
686	/** Host physical address of the hypercall input/output page. */
687	RTHCPHYS HCPhysPage;
688	/** Pointer to the hypercall input/output page. */
689	uint8_t *pbPage;
690	/** Handle to the memory object of the hypercall input/output page. */
691	RTR0MEMOBJ hMemObj;
692	} NEMR0HYPERCALLDATA;
693	/** Pointer to a Windows hypercall input/output page info. */
694	typedef NEMR0HYPERCALLDATA *PNEMR0HYPERCALLDATA;
695	# endif /* RT_OS_WINDOWS */
696
697	/**
698	* NEM GVMCPU instance data.
699	*/
700	typedef struct NEMR0PERVCPU
701	{
702	uint32_t uDummy;
703	} NEMR0PERVCPU;
704
705	/**
706	* NEM GVM instance data.
707	*/
708	typedef struct NEMR0PERVM
709	{
710	uint32_t uDummy;
711	} NEMR0PERVM;
712
713	#endif /* IN_RING*/
714
715
716	#ifdef IN_RING3
717
718	int nemR3DisableCpuIsaExt(PVM pVM, const char *pszIsaExt);
719
720	int nemR3NativeInit(PVM pVM, bool fFallback, bool fForced);
721	int nemR3NativeInitAfterCPUM(PVM pVM);
722	int nemR3NativeInitCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
723	int nemR3NativeTerm(PVM pVM);
724	void nemR3NativeReset(PVM pVM);
725	void nemR3NativeResetCpu(PVMCPU pVCpu, bool fInitIpi);
726	VBOXSTRICTRC nemR3NativeRunGC(PVM pVM, PVMCPU pVCpu);
727	bool nemR3NativeCanExecuteGuest(PVM pVM, PVMCPU pVCpu);
728	bool nemR3NativeSetSingleInstruction(PVM pVM, PVMCPU pVCpu, bool fEnable);
729
730	/** GIC API is currently implemented in NEM rather than in GIC. */
731	VMM_INT_DECL(int) NEMR3GicSetSpi(PVMCC pVM, uint32_t uIntId, bool fAsserted);
732	VMM_INT_DECL(int) NEMR3GicSetPpi(PVMCPUCC pVCpu, uint32_t uIntId, bool fAsserted);
733	VMM_INT_DECL(VBOXSTRICTRC) NEMR3GicReadSysReg(PVMCPUCC pVCpu, uint32_t u32Reg, uint64_t *pu64Value);
734	VMM_INT_DECL(VBOXSTRICTRC) NEMR3GicWriteSysReg(PVMCPUCC pVCpu, uint32_t u32Reg, uint64_t u64Value);
735
736	/**
737	* Forced flag notification call from VMEmt.h.
738	*
739	* This is only called when pVCpu is in the VMCPUSTATE_STARTED_EXEC_NEM state.
740	*
741	* @param pVM The cross context VM structure.
742	* @param pVCpu The cross context virtual CPU structure of the CPU
743	* to be notified.
744	* @param fFlags Notification flags, VMNOTIFYFF_FLAGS_XXX.
745	*/
746	void nemR3NativeNotifyFF(PVM pVM, PVMCPU pVCpu, uint32_t fFlags);
747
748	/**
749	* Called by NEMR3NotifyDebugEventChanged() to let the native backend take the final decision
750	* on whether to switch to the debug loop.
751	*
752	* @returns Final flag whether to switch to the debug loop.
753	* @param pVM The VM cross context VM structure.
754	* @param fUseDebugLoop The current value determined by NEMR3NotifyDebugEventChanged().
755	* @thread EMT(0)
756	*/
757	DECLHIDDEN(bool) nemR3NativeNotifyDebugEventChanged(PVM pVM, bool fUseDebugLoop);
758
759
760	/**
761	* Called by NEMR3NotifyDebugEventChangedPerCpu() to let the native backend take the final decision
762	* on whether to switch to the debug loop.
763	*
764	* @returns Final flag whether to switch to the debug loop.
765	* @param pVM The VM cross context VM structure.
766	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
767	* @param fUseDebugLoop The current value determined by NEMR3NotifyDebugEventChangedPerCpu().
768	*/
769	DECLHIDDEN(bool) nemR3NativeNotifyDebugEventChangedPerCpu(PVM pVM, PVMCPU pVCpu, bool fUseDebugLoop);
770
771	#endif /* IN_RING3 */
772
773	void nemHCNativeNotifyHandlerPhysicalRegister(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb);
774	void nemHCNativeNotifyHandlerPhysicalModify(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhysOld,
775	RTGCPHYS GCPhysNew, RTGCPHYS cb, bool fRestoreAsRAM);
776	int nemHCNativeNotifyPhysPageAllocated(PVMCC pVM, RTGCPHYS GCPhys, RTHCPHYS HCPhys, uint32_t fPageProt,
777	PGMPAGETYPE enmType, uint8_t *pu2State);
778
779
780	#ifdef RT_OS_WINDOWS
781	/** Maximum number of pages we can map in a single NEMR0MapPages call. */
782	# define NEM_MAX_MAP_PAGES ((HOST_PAGE_SIZE - RT_UOFFSETOF(HV_INPUT_MAP_GPA_PAGES, PageList)) / sizeof(HV_SPA_PAGE_NUMBER))
783	/** Maximum number of pages we can unmap in a single NEMR0UnmapPages call. */
784	# define NEM_MAX_UNMAP_PAGES 4095
785
786	#endif
787	/** @} */
788
789	RT_C_DECLS_END
790
791	#endif /* !VMM_INCLUDED_SRC_include_NEMInternal_h */
792

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