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VMMInternal.h

Last change on this file was 98103, checked in by vboxsync, 17 months ago
Copyright year updates by scm.
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1	/* $Id: VMMInternal.h 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VMM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 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	#ifndef VMM_INCLUDED_SRC_include_VMMInternal_h
29	#define VMM_INCLUDED_SRC_include_VMMInternal_h
30	#ifndef RT_WITHOUT_PRAGMA_ONCE
31	# pragma once
32	#endif
33
34	#include <VBox/cdefs.h>
35	#include <VBox/sup.h>
36	#include <VBox/vmm/stam.h>
37	#include <VBox/vmm/vmm.h>
38	#include <VBox/param.h>
39	#include <VBox/log.h>
40	#include <iprt/critsect.h>
41
42	#if !defined(IN_VMM_R3) && !defined(IN_VMM_R0) && !defined(IN_VMM_RC)
43	# error "Not in VMM! This is an internal header!"
44	#endif
45	#if HC_ARCH_BITS == 32
46	# error "32-bit hosts are no longer supported. Go back to 6.0 or earlier!"
47	#endif
48
49
50
51	/** @defgroup grp_vmm_int Internals
52	* @ingroup grp_vmm
53	* @internal
54	* @{
55	*/
56
57	/** @def VBOX_WITH_RC_RELEASE_LOGGING
58	* Enables RC release logging. */
59	#define VBOX_WITH_RC_RELEASE_LOGGING
60
61	/** @def VBOX_WITH_R0_LOGGING
62	* Enables Ring-0 logging (non-release).
63	*
64	* Ring-0 logging isn't 100% safe yet (thread id reuse / process exit cleanup),
65	* so you have to sign up here by adding your defined(DEBUG_<userid>) to the
66	* \#if, or by adding VBOX_WITH_R0_LOGGING to your LocalConfig.kmk.
67	*/
68	#if defined(DEBUG_sandervl) \|\| defined(DEBUG_frank) \|\| defined(DEBUG_ramshankar) \|\| defined(DOXYGEN_RUNNING)
69	# define VBOX_WITH_R0_LOGGING
70	#endif
71
72	/** @def VBOX_STRICT_VMM_STACK
73	* Enables VMM stack guard pages to catch stack over- and underruns. */
74	#if defined(VBOX_STRICT) \|\| defined(DOXYGEN_RUNNING)
75	# define VBOX_STRICT_VMM_STACK
76	#endif
77
78
79	/** Number of buffers per logger. */
80	#define VMMLOGGER_BUFFER_COUNT 4
81
82	/**
83	* R0 logger data (ring-0 only data).
84	*/
85	typedef struct VMMR0PERVCPULOGGER
86	{
87	/** Pointer to the logger instance.
88	* The RTLOGGER::u32UserValue1 member is used for flags and magic, while the
89	* RTLOGGER::u64UserValue2 member is the corresponding PGVMCPU value.
90	* RTLOGGER::u64UserValue3 is currently and set to the PGVMCPU value too. */
91	R0PTRTYPE(PRTLOGGER) pLogger;
92	/** Log buffer descriptor.
93	* The buffer is allocated in a common block for all VCpus, see VMMR0PERVM. */
94	RTLOGBUFFERDESC aBufDescs[VMMLOGGER_BUFFER_COUNT];
95	/** Flag indicating whether we've registered the instance already. */
96	bool fRegistered;
97	/** Set if the EMT is waiting on hEventFlushWait. */
98	bool fEmtWaiting;
99	/** Set while we're inside vmmR0LoggerFlushCommon to prevent recursion. */
100	bool fFlushing;
101	/** Flush to parent VMM's debug log instead of ring-3. */
102	bool fFlushToParentVmmDbg : 1;
103	/** Flush to parent VMM's debug log instead of ring-3. */
104	bool fFlushToParentVmmRel : 1;
105	/** Number of buffers currently queued for flushing. */
106	uint32_t volatile cFlushing;
107	/** The event semaphore the EMT waits on while the buffer is being flushed. */
108	RTSEMEVENT hEventFlushWait;
109	} VMMR0PERVCPULOGGER;
110	/** Pointer to the R0 logger data (ring-0 only). */
111	typedef VMMR0PERVCPULOGGER *PVMMR0PERVCPULOGGER;
112
113
114	/**
115	* R0 logger data shared with ring-3 (per CPU).
116	*/
117	typedef struct VMMR3CPULOGGER
118	{
119	/** Buffer info. */
120	struct
121	{
122	/** Auxiliary buffer descriptor. */
123	RTLOGBUFFERAUXDESC AuxDesc;
124	/** Ring-3 mapping of the logging buffer. */
125	R3PTRTYPE(char *) pchBufR3;
126	} aBufs[VMMLOGGER_BUFFER_COUNT];
127	/** The current buffer. */
128	uint32_t idxBuf;
129	/** Number of buffers currently queued for flushing (copy of
130	* VMMR0PERVCPULOGGER::cFlushing). */
131	uint32_t volatile cFlushing;
132	/** The buffer size. */
133	uint32_t cbBuf;
134	/** Number of bytes dropped because the flush context didn't allow waiting. */
135	uint32_t cbDropped;
136	STAMCOUNTER StatFlushes;
137	STAMCOUNTER StatCannotBlock;
138	STAMPROFILE StatWait;
139	STAMPROFILE StatRaces;
140	STAMCOUNTER StatRacesToR0;
141	} VMMR3CPULOGGER;
142	/** Pointer to r0 logger data shared with ring-3. */
143	typedef VMMR3CPULOGGER *PVMMR3CPULOGGER;
144
145	/** @name Logger indexes for VMMR0PERVCPU::u.aLoggers and VMMCPU::u.aLoggers.
146	* @{ */
147	#define VMMLOGGER_IDX_REGULAR 0
148	#define VMMLOGGER_IDX_RELEASE 1
149	#define VMMLOGGER_IDX_MAX 2
150	/** @} */
151
152
153	/** Pointer to a ring-0 jump buffer. */
154	typedef struct VMMR0JMPBUF *PVMMR0JMPBUF;
155	/**
156	* Jump buffer for the setjmp/longjmp like constructs used to
157	* quickly 'call' back into Ring-3.
158	*/
159	typedef struct VMMR0JMPBUF
160	{
161	/** Traditional jmp_buf stuff
162	* @{ */
163	#if HC_ARCH_BITS == 32
164	uint32_t ebx;
165	uint32_t esi;
166	uint32_t edi;
167	uint32_t ebp;
168	uint32_t esp;
169	uint32_t eip;
170	uint32_t eflags;
171	#endif
172	#if HC_ARCH_BITS == 64
173	uint64_t rbx;
174	# ifdef RT_OS_WINDOWS
175	uint64_t rsi;
176	uint64_t rdi;
177	# endif
178	uint64_t rbp;
179	uint64_t r12;
180	uint64_t r13;
181	uint64_t r14;
182	uint64_t r15;
183	uint64_t rsp;
184	uint64_t rip;
185	# ifdef RT_OS_WINDOWS
186	uint128_t xmm6;
187	uint128_t xmm7;
188	uint128_t xmm8;
189	uint128_t xmm9;
190	uint128_t xmm10;
191	uint128_t xmm11;
192	uint128_t xmm12;
193	uint128_t xmm13;
194	uint128_t xmm14;
195	uint128_t xmm15;
196	# endif
197	uint64_t rflags;
198	#endif
199	/** @} */
200
201	/** RSP/ESP at the time of the stack mirroring (what pvStackBuf starts with). */
202	RTHCUINTREG UnwindSp;
203	/** RSP/ESP at the time of the long jump call. */
204	RTHCUINTREG UnwindRetSp;
205	/** RBP/EBP inside the vmmR0CallRing3LongJmp frame. */
206	RTHCUINTREG UnwindBp;
207	/** RIP/EIP within vmmR0CallRing3LongJmp for assisting unwinding. */
208	RTHCUINTREG UnwindPc;
209	/** Unwind: The vmmR0CallRing3SetJmp return address value. */
210	RTHCUINTREG UnwindRetPcValue;
211	/** Unwind: The vmmR0CallRing3SetJmp return address stack location. */
212	RTHCUINTREG UnwindRetPcLocation;
213
214	/** The function last being executed here. */
215	RTHCUINTREG pfn;
216	/** The first argument to the function. */
217	RTHCUINTREG pvUser1;
218	/** The second argument to the function. */
219	RTHCUINTREG pvUser2;
220
221	/** Number of valid bytes in pvStackBuf. */
222	uint32_t cbStackValid;
223	/** Size of buffer pvStackBuf points to. */
224	uint32_t cbStackBuf;
225	/** Pointer to buffer for mirroring the stack. Optional. */
226	RTR0PTR pvStackBuf;
227	/** Pointer to a ring-3 accessible jump buffer structure for automatic
228	* mirroring on longjmp. Optional. */
229	R0PTRTYPE(PVMMR0JMPBUF) pMirrorBuf;
230	} VMMR0JMPBUF;
231
232
233	/**
234	* Log flusher job.
235	*
236	* There is a ring buffer of these in ring-0 (VMMR0PERVM::aLogFlushRing) and a
237	* copy of the current one in the shared VM structure (VMM::LogFlusherItem).
238	*/
239	typedef union VMMLOGFLUSHERENTRY
240	{
241	struct
242	{
243	/** The virtual CPU ID. */
244	uint32_t idCpu : 16;
245	/** The logger: 0 for release, 1 for debug. */
246	uint32_t idxLogger : 8;
247	/** The buffer to be flushed. */
248	uint32_t idxBuffer : 7;
249	/** Set by the flusher thread once it fetched the entry and started
250	* processing it. */
251	uint32_t fProcessing : 1;
252	} s;
253	uint32_t u32;
254	} VMMLOGFLUSHERENTRY;
255
256
257	/**
258	* VMM Data (part of VM)
259	*/
260	typedef struct VMM
261	{
262	/** Whether we should use the periodic preemption timers. */
263	bool fUsePeriodicPreemptionTimers;
264	/** Alignment padding. */
265	bool afPadding0[7];
266
267	#if 0 /* pointless when timers doesn't run on EMT */
268	/** The EMT yield timer. */
269	TMTIMERHANDLE hYieldTimer;
270	/** The period to the next timeout when suspended or stopped.
271	* This is 0 when running. */
272	uint32_t cYieldResumeMillies;
273	/** The EMT yield timer interval (milliseconds). */
274	uint32_t cYieldEveryMillies;
275	/** The timestamp of the previous yield. (nano) */
276	uint64_t u64LastYield;
277	#endif
278
279	/** @name EMT Rendezvous
280	* @{ */
281	/** Semaphore to wait on upon entering ordered execution. */
282	R3PTRTYPE(PRTSEMEVENT) pahEvtRendezvousEnterOrdered;
283	/** Semaphore to wait on upon entering for one-by-one execution. */
284	RTSEMEVENT hEvtRendezvousEnterOneByOne;
285	/** Semaphore to wait on upon entering for all-at-once execution. */
286	RTSEMEVENTMULTI hEvtMulRendezvousEnterAllAtOnce;
287	/** Semaphore to wait on when done. */
288	RTSEMEVENTMULTI hEvtMulRendezvousDone;
289	/** Semaphore the VMMR3EmtRendezvous caller waits on at the end. */
290	RTSEMEVENT hEvtRendezvousDoneCaller;
291	/** Semaphore to wait on upon recursing. */
292	RTSEMEVENTMULTI hEvtMulRendezvousRecursionPush;
293	/** Semaphore to wait on after done with recursion (caller restoring state). */
294	RTSEMEVENTMULTI hEvtMulRendezvousRecursionPop;
295	/** Semaphore the initiator waits on while the EMTs are getting into position
296	* on hEvtMulRendezvousRecursionPush. */
297	RTSEMEVENT hEvtRendezvousRecursionPushCaller;
298	/** Semaphore the initiator waits on while the EMTs sitting on
299	* hEvtMulRendezvousRecursionPop wakes up and leave. */
300	RTSEMEVENT hEvtRendezvousRecursionPopCaller;
301	/** Callback. */
302	R3PTRTYPE(PFNVMMEMTRENDEZVOUS) volatile pfnRendezvous;
303	/** The user argument for the callback. */
304	RTR3PTR volatile pvRendezvousUser;
305	/** Flags. */
306	volatile uint32_t fRendezvousFlags;
307	/** The number of EMTs that has entered. */
308	volatile uint32_t cRendezvousEmtsEntered;
309	/** The number of EMTs that has done their job. */
310	volatile uint32_t cRendezvousEmtsDone;
311	/** The number of EMTs that has returned. */
312	volatile uint32_t cRendezvousEmtsReturned;
313	/** The status code. */
314	volatile int32_t i32RendezvousStatus;
315	/** Spin lock. */
316	volatile uint32_t u32RendezvousLock;
317	/** The recursion depth. */
318	volatile uint32_t cRendezvousRecursions;
319	/** The number of EMTs that have entered the recursion routine. */
320	volatile uint32_t cRendezvousEmtsRecursingPush;
321	/** The number of EMTs that have leaft the recursion routine. */
322	volatile uint32_t cRendezvousEmtsRecursingPop;
323	/** Triggers rendezvous recursion in the other threads. */
324	volatile bool fRendezvousRecursion;
325
326	/** @} */
327
328	/** RTThreadPreemptIsPendingTrusty() result, set by vmmR0InitVM() for
329	* release logging purposes. */
330	bool fIsPreemptPendingApiTrusty : 1;
331	/** The RTThreadPreemptIsPossible() result, set by vmmR0InitVM() for
332	* release logging purposes. */
333	bool fIsPreemptPossible : 1;
334	/** Set if ring-0 uses context hooks. */
335	bool fIsUsingContextHooks : 1;
336
337	bool afAlignment2[2]; /*< Alignment padding. /
338
339	/** Buffer for storing the standard assertion message for a ring-0 assertion.
340	* Used for saving the assertion message text for the release log and guru
341	* meditation dump. */
342	char szRing0AssertMsg1[512];
343	/** Buffer for storing the custom message for a ring-0 assertion. */
344	char szRing0AssertMsg2[256];
345
346	/** @name Logging
347	* @{ */
348	/** Used when setting up ring-0 logger. */
349	uint64_t nsProgramStart;
350	/** Log flusher thread. */
351	RTTHREAD hLogFlusherThread;
352	/** Copy of the current work log flusher work item. */
353	VMMLOGFLUSHERENTRY volatile LogFlusherItem;
354	STAMCOUNTER StatLogFlusherFlushes;
355	STAMCOUNTER StatLogFlusherNoWakeUp;
356	/** @} */
357
358	/** Number of VMMR0_DO_HM_RUN or VMMR0_DO_NEM_RUN calls. */
359	STAMCOUNTER StatRunGC;
360
361	/** Statistics for each of the RC/R0 return codes.
362	* @{ */
363	STAMCOUNTER StatRZRetNormal;
364	STAMCOUNTER StatRZRetInterrupt;
365	STAMCOUNTER StatRZRetInterruptHyper;
366	STAMCOUNTER StatRZRetGuestTrap;
367	STAMCOUNTER StatRZRetRingSwitch;
368	STAMCOUNTER StatRZRetRingSwitchInt;
369	STAMCOUNTER StatRZRetStaleSelector;
370	STAMCOUNTER StatRZRetIRETTrap;
371	STAMCOUNTER StatRZRetEmulate;
372	STAMCOUNTER StatRZRetPatchEmulate;
373	STAMCOUNTER StatRZRetIORead;
374	STAMCOUNTER StatRZRetIOWrite;
375	STAMCOUNTER StatRZRetIOCommitWrite;
376	STAMCOUNTER StatRZRetMMIORead;
377	STAMCOUNTER StatRZRetMMIOWrite;
378	STAMCOUNTER StatRZRetMMIOCommitWrite;
379	STAMCOUNTER StatRZRetMMIOPatchRead;
380	STAMCOUNTER StatRZRetMMIOPatchWrite;
381	STAMCOUNTER StatRZRetMMIOReadWrite;
382	STAMCOUNTER StatRZRetMSRRead;
383	STAMCOUNTER StatRZRetMSRWrite;
384	STAMCOUNTER StatRZRetLDTFault;
385	STAMCOUNTER StatRZRetGDTFault;
386	STAMCOUNTER StatRZRetIDTFault;
387	STAMCOUNTER StatRZRetTSSFault;
388	STAMCOUNTER StatRZRetCSAMTask;
389	STAMCOUNTER StatRZRetSyncCR3;
390	STAMCOUNTER StatRZRetMisc;
391	STAMCOUNTER StatRZRetPatchInt3;
392	STAMCOUNTER StatRZRetPatchPF;
393	STAMCOUNTER StatRZRetPatchGP;
394	STAMCOUNTER StatRZRetPatchIretIRQ;
395	STAMCOUNTER StatRZRetRescheduleREM;
396	STAMCOUNTER StatRZRetToR3Total;
397	STAMCOUNTER StatRZRetToR3FF;
398	STAMCOUNTER StatRZRetToR3Unknown;
399	STAMCOUNTER StatRZRetToR3TMVirt;
400	STAMCOUNTER StatRZRetToR3HandyPages;
401	STAMCOUNTER StatRZRetToR3PDMQueues;
402	STAMCOUNTER StatRZRetToR3Rendezvous;
403	STAMCOUNTER StatRZRetToR3Timer;
404	STAMCOUNTER StatRZRetToR3DMA;
405	STAMCOUNTER StatRZRetToR3CritSect;
406	STAMCOUNTER StatRZRetToR3Iem;
407	STAMCOUNTER StatRZRetToR3Iom;
408	STAMCOUNTER StatRZRetTimerPending;
409	STAMCOUNTER StatRZRetInterruptPending;
410	STAMCOUNTER StatRZRetPATMDuplicateFn;
411	STAMCOUNTER StatRZRetPendingRequest;
412	STAMCOUNTER StatRZRetPGMFlushPending;
413	STAMCOUNTER StatRZRetPatchTPR;
414	/** @} */
415	} VMM;
416	/** Pointer to VMM. */
417	typedef VMM *PVMM;
418
419
420	/**
421	* VMMCPU Data (part of VMCPU)
422	*/
423	typedef struct VMMCPU
424	{
425	/** The last RC/R0 return code. */
426	int32_t iLastGZRc;
427	/** Alignment padding. */
428	uint32_t u32Padding0;
429
430	/** @name Rendezvous
431	* @{ */
432	/** Whether the EMT is executing a rendezvous right now. For detecting
433	* attempts at recursive rendezvous. */
434	bool volatile fInRendezvous;
435	bool afPadding1[2];
436	/** @} */
437
438	/** Whether we can HLT in VMMR0 rather than having to return to EM.
439	* Updated by vmR3SetHaltMethodU(). */
440	bool fMayHaltInRing0;
441	/** The minimum delta for which we can HLT in ring-0 for.
442	* The deadlines we can calculate are from TM, so, if it's too close
443	* we should just return to ring-3 and run the timer wheel, no point
444	* in spinning in ring-0.
445	* Updated by vmR3SetHaltMethodU(). */
446	uint32_t cNsSpinBlockThreshold;
447	/** Number of ring-0 halts (used for depreciating following values). */
448	uint32_t cR0Halts;
449	/** Number of ring-0 halts succeeding (VINF_SUCCESS) recently. */
450	uint32_t cR0HaltsSucceeded;
451	/** Number of ring-0 halts failing (VINF_EM_HALT) recently. */
452	uint32_t cR0HaltsToRing3;
453	/** Padding */
454	uint32_t u32Padding2;
455
456	/** @name Raw-mode context tracing data.
457	* @{ */
458	SUPDRVTRACERUSRCTX TracerCtx;
459	/** @} */
460
461	/** @name Ring-0 assertion info for this EMT.
462	* @{ */
463	/** Copy of the ring-0 jmp buffer after an assertion. */
464	VMMR0JMPBUF AssertJmpBuf;
465	/** Copy of the assertion stack. */
466	uint8_t abAssertStack[8192];
467	/** @} */
468
469	/**
470	* Loggers.
471	*/
472	union
473	{
474	struct
475	{
476	/** The R0 logger data shared with ring-3. */
477	VMMR3CPULOGGER Logger;
478	/** The R0 release logger data shared with ring-3. */
479	VMMR3CPULOGGER RelLogger;
480	} s;
481	/** Array view. */
482	VMMR3CPULOGGER aLoggers[VMMLOGGER_IDX_MAX];
483	} u;
484
485	STAMPROFILE StatR0HaltBlock;
486	STAMPROFILE StatR0HaltBlockOnTime;
487	STAMPROFILE StatR0HaltBlockOverslept;
488	STAMPROFILE StatR0HaltBlockInsomnia;
489	STAMCOUNTER StatR0HaltExec;
490	STAMCOUNTER StatR0HaltExecFromBlock;
491	STAMCOUNTER StatR0HaltExecFromSpin;
492	STAMCOUNTER StatR0HaltToR3;
493	STAMCOUNTER StatR0HaltToR3FromSpin;
494	STAMCOUNTER StatR0HaltToR3Other;
495	STAMCOUNTER StatR0HaltToR3PendingFF;
496	STAMCOUNTER StatR0HaltToR3SmallDelta;
497	STAMCOUNTER StatR0HaltToR3PostNoInt;
498	STAMCOUNTER StatR0HaltToR3PostPendingFF;
499	} VMMCPU;
500	AssertCompileMemberAlignment(VMMCPU, TracerCtx, 8);
501	AssertCompile( RTASSERT_OFFSET_OF(VMMCPU, u.s.Logger)
502	== RTASSERT_OFFSET_OF(VMMCPU, u.aLoggers) + sizeof(VMMR3CPULOGGER) * VMMLOGGER_IDX_REGULAR);
503	AssertCompile(RTASSERT_OFFSET_OF(VMMCPU, u.s.RelLogger)
504	== RTASSERT_OFFSET_OF(VMMCPU, u.aLoggers) + sizeof(VMMR3CPULOGGER) * VMMLOGGER_IDX_RELEASE);
505
506	/** Pointer to VMMCPU. */
507	typedef VMMCPU *PVMMCPU;
508
509	/**
510	* VMM per-VCpu ring-0 only instance data.
511	*/
512	typedef struct VMMR0PERVCPU
513	{
514	/** The EMT hash table index. */
515	uint16_t idxEmtHash;
516	/** Flag indicating whether we've disabled flushing (world switch) or not. */
517	bool fLogFlushingDisabled;
518	bool afPadding1[5];
519	/** Pointer to the VMMR0EntryFast preemption state structure.
520	* This is used to temporarily restore preemption before blocking. */
521	R0PTRTYPE(PRTTHREADPREEMPTSTATE) pPreemptState;
522	/** Thread context switching hook (ring-0). */
523	RTTHREADCTXHOOK hCtxHook;
524
525	/** @name Arguments passed by VMMR0EntryEx via vmmR0CallRing3SetJmpEx.
526	* @note Cannot be put on the stack as the location may change and upset the
527	* validation of resume-after-ring-3-call logic.
528	* @todo This no longer needs to be here now that we don't call ring-3 and mess
529	* around with stack restoring/switching.
530	* @{ */
531	PGVM pGVM;
532	VMCPUID idCpu;
533	VMMR0OPERATION enmOperation;
534	PSUPVMMR0REQHDR pReq;
535	uint64_t u64Arg;
536	PSUPDRVSESSION pSession;
537	/** @} */
538
539	/** @name Ring-0 setjmp / assertion handling.
540	* @{ */
541	/** The ring-0 setjmp buffer. */
542	VMMR0JMPBUF AssertJmpBuf;
543	/** The disable counter. */
544	uint32_t cCallRing3Disabled;
545	uint32_t u32Padding3;
546	/** Ring-0 assertion notification callback. */
547	R0PTRTYPE(PFNVMMR0ASSERTIONNOTIFICATION) pfnAssertCallback;
548	/** Argument for pfnRing0AssertionNotificationCallback. */
549	R0PTRTYPE(void *) pvAssertCallbackUser;
550	/** @} */
551
552	/**
553	* Loggers
554	*/
555	union
556	{
557	struct
558	{
559	/** The R0 logger data. */
560	VMMR0PERVCPULOGGER Logger;
561	/** The R0 release logger data. */
562	VMMR0PERVCPULOGGER RelLogger;
563	} s;
564	/** Array view. */
565	VMMR0PERVCPULOGGER aLoggers[VMMLOGGER_IDX_MAX];
566	} u;
567	} VMMR0PERVCPU;
568	AssertCompile( RTASSERT_OFFSET_OF(VMMR0PERVCPU, u.s.Logger)
569	== RTASSERT_OFFSET_OF(VMMR0PERVCPU, u.aLoggers) + sizeof(VMMR0PERVCPULOGGER) * VMMLOGGER_IDX_REGULAR);
570	AssertCompile(RTASSERT_OFFSET_OF(VMMR0PERVCPU, u.s.RelLogger)
571	== RTASSERT_OFFSET_OF(VMMR0PERVCPU, u.aLoggers) + sizeof(VMMR0PERVCPULOGGER) * VMMLOGGER_IDX_RELEASE);
572	AssertCompileMemberAlignment(VMMR0PERVCPU, AssertJmpBuf, 64);
573	/** Pointer to VMM ring-0 VMCPU instance data. */
574	typedef VMMR0PERVCPU *PVMMR0PERVCPU;
575
576	/** @name RTLOGGER::u32UserValue1 Flags
577	* @{ */
578	/** The magic value. */
579	#define VMMR0_LOGGER_FLAGS_MAGIC_VALUE UINT32_C(0x7d297f05)
580	/** Part of the flags value used for the magic. */
581	#define VMMR0_LOGGER_FLAGS_MAGIC_MASK UINT32_C(0xffffff0f)
582	/** @} */
583
584
585	/**
586	* VMM data kept in the ring-0 GVM.
587	*/
588	typedef struct VMMR0PERVM
589	{
590	/** Set if vmmR0InitVM has been called. */
591	bool fCalledInitVm;
592	bool afPadding1[7];
593
594	/** @name Logging
595	* @{ */
596	/** Logger (debug) buffer allocation.
597	* This covers all CPUs. */
598	RTR0MEMOBJ hMemObjLogger;
599	/** The ring-3 mapping object for hMemObjLogger. */
600	RTR0MEMOBJ hMapObjLogger;
601
602	/** Release logger buffer allocation.
603	* This covers all CPUs. */
604	RTR0MEMOBJ hMemObjReleaseLogger;
605	/** The ring-3 mapping object for hMemObjReleaseLogger. */
606	RTR0MEMOBJ hMapObjReleaseLogger;
607
608	struct
609	{
610	/** Spinlock protecting the logger ring buffer and associated variables. */
611	R0PTRTYPE(RTSPINLOCK) hSpinlock;
612	/** The log flusher thread handle to make sure there is only one. */
613	RTNATIVETHREAD hThread;
614	/** The handle to the event semaphore the log flusher waits on. */
615	RTSEMEVENT hEvent;
616	/** The index of the log flusher queue head (flusher thread side). */
617	uint32_t volatile idxRingHead;
618	/** The index of the log flusher queue tail (EMT side). */
619	uint32_t volatile idxRingTail;
620	/** Set if the log flusher thread is waiting for work and needs poking. */
621	bool volatile fThreadWaiting;
622	/** Set when the log flusher thread should shut down. */
623	bool volatile fThreadShutdown;
624	/** Indicates that the log flusher thread is running. */
625	bool volatile fThreadRunning;
626	bool afPadding2[5];
627	STAMCOUNTER StatFlushes;
628	STAMCOUNTER StatNoWakeUp;
629	/** Logger ring buffer.
630	* This is for communicating with the log flusher thread. */
631	VMMLOGFLUSHERENTRY aRing[VMM_MAX_CPU_COUNT * 2 /loggers/ * 1 /buffer/ + 16 /fudge/];
632	} LogFlusher;
633	/** @} */
634	} VMMR0PERVM;
635
636	RT_C_DECLS_BEGIN
637
638	int vmmInitFormatTypes(void);
639	void vmmTermFormatTypes(void);
640	uint32_t vmmGetBuildType(void);
641
642	#ifdef IN_RING3
643	int vmmR3SwitcherInit(PVM pVM);
644	void vmmR3SwitcherRelocate(PVM pVM, RTGCINTPTR offDelta);
645	#endif /* IN_RING3 */
646
647	#ifdef IN_RING0
648
649	/**
650	* World switcher assembly routine.
651	* It will call VMMRCEntry().
652	*
653	* @returns return code from VMMRCEntry().
654	* @param pVM The cross context VM structure.
655	* @param uArg See VMMRCEntry().
656	* @internal
657	*/
658	DECLASM(int) vmmR0WorldSwitch(PVM pVM, unsigned uArg);
659
660	/**
661	* Callback function for vmmR0CallRing3SetJmp.
662	*
663	* @returns VBox status code.
664	* @param pVM The cross context VM structure.
665	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
666	*/
667	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMP,(PVMCC pVM, PVMCPUCC pVCpu));
668	/** Pointer to FNVMMR0SETJMP(). */
669	typedef FNVMMR0SETJMP *PFNVMMR0SETJMP;
670
671	/**
672	* The setjmp variant used for calling Ring-3.
673	*
674	* This differs from the normal setjmp in that it will resume VMMRZCallRing3 if we're
675	* in the middle of a ring-3 call. Another differences is the function pointer and
676	* argument. This has to do with resuming code and the stack frame of the caller.
677	*
678	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
679	* @param pJmpBuf The jmp_buf to set.
680	* @param pfn The function to be called when not resuming.
681	* @param pVM The cross context VM structure.
682	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
683	*/
684	DECLASM(int) vmmR0CallRing3SetJmp(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP pfn, PVM pVM, PVMCPU pVCpu);
685
686
687	/**
688	* Callback function for vmmR0CallRing3SetJmp2.
689	*
690	* @returns VBox status code.
691	* @param pGVM The ring-0 VM structure.
692	* @param idCpu The ID of the calling EMT.
693	*/
694	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMP2,(PGVM pGVM, VMCPUID idCpu));
695	/** Pointer to FNVMMR0SETJMP2(). */
696	typedef FNVMMR0SETJMP2 *PFNVMMR0SETJMP2;
697
698	/**
699	* Same as vmmR0CallRing3SetJmp except for the function signature.
700	*
701	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
702	* @param pJmpBuf The jmp_buf to set.
703	* @param pfn The function to be called when not resuming.
704	* @param pGVM The ring-0 VM structure.
705	* @param idCpu The ID of the calling EMT.
706	*/
707	DECLASM(int) vmmR0CallRing3SetJmp2(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP2 pfn, PGVM pGVM, VMCPUID idCpu);
708
709
710	/**
711	* Callback function for vmmR0CallRing3SetJmpEx.
712	*
713	* @returns VBox status code.
714	* @param pvUser The user argument.
715	*/
716	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMPEX,(void *pvUser));
717	/** Pointer to FNVMMR0SETJMPEX(). */
718	typedef FNVMMR0SETJMPEX *PFNVMMR0SETJMPEX;
719
720	/**
721	* Same as vmmR0CallRing3SetJmp except for the function signature.
722	*
723	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
724	* @param pJmpBuf The jmp_buf to set.
725	* @param pfn The function to be called when not resuming.
726	* @param pvUser The argument of that function.
727	* @param uCallKey Unused call parameter that should be used to help
728	* uniquely identify the call.
729	*/
730	DECLASM(int) vmmR0CallRing3SetJmpEx(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMPEX pfn, void *pvUser, uintptr_t uCallKey);
731
732
733	/**
734	* Worker for VMMRZCallRing3.
735	* This will save the stack and registers.
736	*
737	* @returns rc.
738	* @param pJmpBuf Pointer to the jump buffer.
739	* @param rc The return code.
740	*/
741	DECLASM(int) vmmR0CallRing3LongJmp(PVMMR0JMPBUF pJmpBuf, int rc);
742
743	# ifdef VBOX_WITH_TRIPLE_FAULT_HACK
744	int vmmR0TripleFaultHackInit(void);
745	void vmmR0TripleFaultHackTerm(void);
746	# endif
747
748	#endif /* IN_RING0 */
749
750	RT_C_DECLS_END
751
752	/** @} */
753
754	#endif /* !VMM_INCLUDED_SRC_include_VMMInternal_h */

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source: vbox/trunk/src/VBox/VMM/include/VMMInternal.h

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