PGMHandler.cpp@ 55890

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1	/* $Id: PGMHandler.cpp 55890 2015-05-17 18:06:25Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager / Monitor, Access Handlers.
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. 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
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_PGM
23	#include <VBox/vmm/dbgf.h>
24	#include <VBox/vmm/pgm.h>
25	#include <VBox/vmm/cpum.h>
26	#include <VBox/vmm/iom.h>
27	#include <VBox/sup.h>
28	#include <VBox/vmm/mm.h>
29	#include <VBox/vmm/em.h>
30	#include <VBox/vmm/stam.h>
31	#include <VBox/vmm/csam.h>
32	#ifdef VBOX_WITH_REM
33	# include <VBox/vmm/rem.h>
34	#endif
35	#include <VBox/vmm/dbgf.h>
36	#ifdef VBOX_WITH_REM
37	# include <VBox/vmm/rem.h>
38	#endif
39	#include <VBox/vmm/selm.h>
40	#include <VBox/vmm/ssm.h>
41	#include "PGMInternal.h"
42	#include <VBox/vmm/vm.h>
43	#include "PGMInline.h"
44	#include <VBox/dbg.h>
45
46	#include <VBox/log.h>
47	#include <iprt/assert.h>
48	#include <iprt/alloc.h>
49	#include <iprt/asm.h>
50	#include <iprt/thread.h>
51	#include <iprt/string.h>
52	#include <VBox/param.h>
53	#include <VBox/err.h>
54	#include <VBox/vmm/hm.h>
55
56
57	/*******************************************************************************
58	* Internal Functions *
59	*******************************************************************************/
60	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser);
61	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser);
62	static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser);
63	static DECLCALLBACK(int) pgmR3InfoHandlersVirtualOne(PAVLROGCPTRNODECORE pNode, void *pvUser);
64
65
66
67
68	/**
69	* Register a physical page access handler type, extended version.
70	*
71	* @returns VBox status code.
72	* @param pVM Pointer to the cross context VM structure.
73	* @param enmKind The kind of access handler.
74	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
75	* @param pfnHandlerR0 Pointer to the ring-0 handler callback.
76	* @param pfnHandlerRC Pointer to the raw-mode context handler callback.
77	* @param pszDesc The type description.
78	* @param phType Where to return the type handle (cross context
79	* safe).
80	*/
81	VMMR3_INT_DECL(int) PGMR3HandlerPhysicalTypeRegisterEx(PVM pVM, PGMPHYSHANDLERKIND enmKind,
82	PFNPGMR3PHYSHANDLER pfnHandlerR3,
83	R0PTRTYPE(PFNPGMR0PHYSHANDLER) pfnHandlerR0,
84	RCPTRTYPE(PFNPGMRCPHYSHANDLER) pfnHandlerRC,
85	const char *pszDesc, PPGMPHYSHANDLERTYPE phType)
86	{
87	AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER);
88	AssertReturn(pfnHandlerR0 != NIL_RTR0PTR, VERR_INVALID_POINTER);
89	AssertReturn(pfnHandlerRC != NIL_RTRCPTR \|\| HMIsEnabled(pVM), VERR_INVALID_POINTER);
90	AssertPtrReturn(pszDesc, VERR_INVALID_POINTER);
91	AssertReturn( enmKind == PGMPHYSHANDLERKIND_WRITE
92	\|\| enmKind == PGMPHYSHANDLERKIND_ALL
93	\|\| enmKind == PGMPHYSHANDLERKIND_MMIO,
94	VERR_INVALID_PARAMETER);
95
96	PPGMPHYSHANDLERTYPEINT pType;
97	int rc = MMHyperAlloc(pVM, sizeof(pType), 0, MM_TAG_PGM_HANDLER_TYPES, (void *)&pType);
98	if (RT_SUCCESS(rc))
99	{
100	pType->u32Magic = PGMPHYSHANDLERTYPEINT_MAGIC;
101	pType->cRefs = 1;
102	pType->enmKind = enmKind;
103	pType->uState = enmKind == PGMPHYSHANDLERKIND_WRITE ? PGM_PAGE_HNDL_PHYS_STATE_WRITE : PGM_PAGE_HNDL_PHYS_STATE_ALL;
104	pType->pfnHandlerR3 = pfnHandlerR3;
105	pType->pfnHandlerR0 = pfnHandlerR0;
106	pType->pfnHandlerRC = pfnHandlerRC;
107	pType->pszDesc = pszDesc;
108
109	pgmLock(pVM);
110	RTListOff32Append(&pVM->pgm.s.CTX_SUFF(pTrees)->HeadPhysHandlerTypes, &pType->ListNode);
111	pgmUnlock(pVM);
112
113	*phType = MMHyperHeapPtrToOffset(pVM, pType);
114	LogFlow(("PGMR3HandlerPhysicalTypeRegisterEx: %p/%#x: enmKind=%d pfnHandlerR3=%RHv pfnHandlerR0=%RHv pfnHandlerRC=%RRv pszDesc=%s\n",
115	pType, *phType, enmKind, pfnHandlerR3, pfnHandlerR0, pfnHandlerRC, pszDesc));
116	return VINF_SUCCESS;
117	}
118	*phType = NIL_PGMPHYSHANDLERTYPE;
119	return rc;
120	}
121
122
123	/**
124	* Register a physical page access handler type.
125	*
126	* @returns VBox status code.
127	* @param pVM Pointer to the cross context VM structure.
128	* @param enmKind The kind of access handler.
129	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
130	* @param pszModR0 The name of the ring-0 module, NULL is an alias for
131	* the main ring-0 module.
132	* @param pszHandlerR0 The name of the ring-0 handler, NULL if the ring-3
133	* handler should be called.
134	* @param pszModRC The name of the raw-mode context module, NULL is an
135	* alias for the main RC module.
136	* @param pszHandlerRC The name of the raw-mode context handler, NULL if
137	* the ring-3 handler should be called.
138	* @param pszDesc The type description.
139	* @param phType Where to return the type handle (cross context
140	* safe).
141	*/
142	VMMR3DECL(int) PGMR3HandlerPhysicalTypeRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind,
143	R3PTRTYPE(PFNPGMR3PHYSHANDLER) pfnHandlerR3,
144	const char pszModR0, const char pszHandlerR0,
145	const char pszModRC, const char pszHandlerRC, const char *pszDesc,
146	PPGMPHYSHANDLERTYPE phType)
147	{
148	LogFlow(("PGMR3HandlerPhysicalTypeRegister: enmKind=%d pfnHandlerR3=%RHv pszModR0=%s pszHandlerR0=%s pszModRC=%s pszHandlerRC=%s pszDesc=%s\n",
149	enmKind, pfnHandlerR3, pszModR0, pszHandlerR0, pszHandlerRC, pszModRC, pszDesc));
150
151	/*
152	* Validate input.
153	*/
154	if (!pszModRC)
155	pszModRC = VMMGC_MAIN_MODULE_NAME;
156	if (!pszModR0)
157	pszModR0 = VMMR0_MAIN_MODULE_NAME;
158	if (!pszHandlerR0)
159	pszHandlerR0 = "pgmPhysHandlerRedirectToHC";
160	if (!pszHandlerRC)
161	pszHandlerRC = "pgmPhysHandlerRedirectToHC";
162	AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER);
163	AssertPtrReturn(pszHandlerR0, VERR_INVALID_POINTER);
164	AssertPtrReturn(pszHandlerRC, VERR_INVALID_POINTER);
165
166	/*
167	* Resolve the R0 handler.
168	*/
169	R0PTRTYPE(PFNPGMR0PHYSHANDLER) pfnHandlerR0 = NIL_RTR0PTR;
170	int rc = PDMR3LdrGetSymbolR0Lazy(pVM, pszModR0, NULL /pszSearchPath/, pszHandlerR0, &pfnHandlerR0);
171	if (RT_SUCCESS(rc))
172	{
173	/*
174	* Resolve the GC handler.
175	*/
176	RTRCPTR pfnHandlerRC = NIL_RTRCPTR;
177	if (!HMIsEnabled(pVM))
178	rc = PDMR3LdrGetSymbolRCLazy(pVM, pszModRC, NULL /pszSearchPath/, pszHandlerRC, &pfnHandlerRC);
179	if (RT_SUCCESS(rc))
180	return PGMR3HandlerPhysicalTypeRegisterEx(pVM, enmKind, pfnHandlerR3, pfnHandlerR0, pfnHandlerRC, pszDesc, phType);
181
182	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszModRC, pszHandlerRC, rc));
183	}
184	else
185	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszModR0, pszHandlerR0, rc));
186
187	return rc;
188	}
189
190
191	/**
192	* Updates the physical page access handlers.
193	*
194	* @param pVM Pointer to the VM.
195	* @remark Only used when restoring a saved state.
196	*/
197	void pgmR3HandlerPhysicalUpdateAll(PVM pVM)
198	{
199	LogFlow(("pgmHandlerPhysicalUpdateAll:\n"));
200
201	/*
202	* Clear and set.
203	* (the right -> left on the setting pass is just bird speculating on cache hits)
204	*/
205	pgmLock(pVM);
206	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, true, pgmR3HandlerPhysicalOneClear, pVM);
207	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, false, pgmR3HandlerPhysicalOneSet, pVM);
208	pgmUnlock(pVM);
209	}
210
211
212	/**
213	* Clears all the page level flags for one physical handler range.
214	*
215	* @returns 0
216	* @param pNode Pointer to a PGMPHYSHANDLER.
217	* @param pvUser Pointer to the VM.
218	*/
219	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser)
220	{
221	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
222	PPGMRAMRANGE pRamHint = NULL;
223	RTGCPHYS GCPhys = pCur->Core.Key;
224	RTUINT cPages = pCur->cPages;
225	PVM pVM = (PVM)pvUser;
226	for (;;)
227	{
228	PPGMPAGE pPage;
229	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
230	if (RT_SUCCESS(rc))
231	PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, PGM_PAGE_HNDL_PHYS_STATE_NONE);
232	else
233	AssertRC(rc);
234
235	if (--cPages == 0)
236	return 0;
237	GCPhys += PAGE_SIZE;
238	}
239	}
240
241
242	/**
243	* Sets all the page level flags for one physical handler range.
244	*
245	* @returns 0
246	* @param pNode Pointer to a PGMPHYSHANDLER.
247	* @param pvUser Pointer to the VM.
248	*/
249	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser)
250	{
251	PVM pVM = (PVM)pvUser;
252	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
253	PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pVM, pCur);
254	unsigned uState = pCurType->uState;
255	PPGMRAMRANGE pRamHint = NULL;
256	RTGCPHYS GCPhys = pCur->Core.Key;
257	RTUINT cPages = pCur->cPages;
258	for (;;)
259	{
260	PPGMPAGE pPage;
261	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
262	if (RT_SUCCESS(rc))
263	PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, uState);
264	else
265	AssertRC(rc);
266
267	if (--cPages == 0)
268	return 0;
269	GCPhys += PAGE_SIZE;
270	}
271	}
272
273
274	/**
275	* Register a virtual page access handler type, extended version.
276	*
277	* @returns VBox status code.
278	* @param pVM Pointer to the cross context VM structure.
279	* @param enmKind The kind of access handler.
280	* @param fRelocUserRC Whether the pvUserRC argument should be
281	* automatically relocated or not.
282	* @param pfnInvalidateR3 Pointer to the ring-3 invalidation handler callback.
283	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
284	* @param pfnHandlerRC Pointer to the raw-mode context handler callback.
285	* @param pszDesc The type description.
286	* @param phType Where to return the type handle (cross context
287	* safe).
288	* @remarks No virtual handlers when executing using HM (i.e. ring-0).
289	*/
290	VMMR3_INT_DECL(int) PGMR3HandlerVirtualTypeRegisterEx(PVM pVM, PGMVIRTHANDLERKIND enmKind, bool fRelocUserRC,
291	PFNPGMR3VIRTINVALIDATE pfnInvalidateR3,
292	PFNPGMR3VIRTHANDLER pfnHandlerR3,
293	RCPTRTYPE(PFNPGMRCVIRTHANDLER) pfnHandlerRC,
294	const char *pszDesc, PPGMVIRTHANDLERTYPE phType)
295	{
296	AssertReturn(!HMIsEnabled(pVM), VERR_NOT_AVAILABLE); /* Not supported/relevant for VT-x and AMD-V. */
297	AssertReturn(RT_VALID_PTR(pfnHandlerR3) \|\| enmKind == PGMVIRTHANDLERKIND_HYPERVISOR, VERR_INVALID_POINTER);
298	AssertPtrNullReturn(pfnInvalidateR3, VERR_INVALID_POINTER);
299	AssertReturn(pfnHandlerRC != NIL_RTRCPTR, VERR_INVALID_POINTER);
300	AssertPtrReturn(pszDesc, VERR_INVALID_POINTER);
301	AssertReturn( enmKind == PGMVIRTHANDLERKIND_WRITE
302	\|\| enmKind == PGMVIRTHANDLERKIND_ALL
303	\|\| enmKind == PGMVIRTHANDLERKIND_HYPERVISOR,
304	VERR_INVALID_PARAMETER);
305
306	PPGMVIRTHANDLERTYPEINT pType;
307	int rc = MMHyperAlloc(pVM, sizeof(pType), 0, MM_TAG_PGM_HANDLER_TYPES, (void *)&pType);
308	if (RT_SUCCESS(rc))
309	{
310	pType->u32Magic = PGMVIRTHANDLERTYPEINT_MAGIC;
311	pType->cRefs = 1;
312	pType->enmKind = enmKind;
313	pType->fRelocUserRC = fRelocUserRC;
314	pType->uState = enmKind == PGMVIRTHANDLERKIND_ALL
315	? PGM_PAGE_HNDL_VIRT_STATE_ALL : PGM_PAGE_HNDL_VIRT_STATE_WRITE;
316	pType->pfnInvalidateR3 = pfnInvalidateR3;
317	pType->pfnHandlerR3 = pfnHandlerR3;
318	pType->pfnHandlerRC = pfnHandlerRC;
319	pType->pszDesc = pszDesc;
320
321	pgmLock(pVM);
322	RTListOff32Append(&pVM->pgm.s.CTX_SUFF(pTrees)->HeadVirtHandlerTypes, &pType->ListNode);
323	pgmUnlock(pVM);
324
325	*phType = MMHyperHeapPtrToOffset(pVM, pType);
326	LogFlow(("PGMR3HandlerVirtualTypeRegisterEx: %p/%#x: enmKind=%d pfnInvalidateR3=%RHv pfnHandlerR3=%RHv pfnHandlerRC=%RRv pszDesc=%s\n",
327	pType, *phType, enmKind, pfnInvalidateR3, pfnHandlerR3, pfnHandlerRC, pszDesc));
328	return VINF_SUCCESS;
329	}
330	*phType = NIL_PGMVIRTHANDLERTYPE;
331	return rc;
332	}
333
334
335	/**
336	* Register a physical page access handler type.
337	*
338	* @returns VBox status code.
339	* @param pVM Pointer to the cross context VM structure.
340	* @param enmKind The kind of access handler.
341	* @param fRelocUserRC Whether the pvUserRC argument should be
342	* automatically relocated or not.
343	* @param pfnInvalidateR3 Pointer to the ring-3 invalidateion callback
344	* (optional, can be NULL).
345	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
346	* @param pszModRC The name of the raw-mode context module, NULL is an
347	* alias for the main RC module.
348	* @param pszHandlerRC The name of the raw-mode context handler, NULL if
349	* the ring-3 handler should be called.
350	* @param pszDesc The type description.
351	* @param phType Where to return the type handle (cross context
352	* safe).
353	* @remarks No virtual handlers when executing using HM (i.e. ring-0).
354	*/
355	VMMR3_INT_DECL(int) PGMR3HandlerVirtualTypeRegister(PVM pVM, PGMVIRTHANDLERKIND enmKind, bool fRelocUserRC,
356	PFNPGMR3VIRTINVALIDATE pfnInvalidateR3,
357	PFNPGMR3VIRTHANDLER pfnHandlerR3,
358	const char pszHandlerRC, const char pszModRC, const char *pszDesc,
359	PPGMVIRTHANDLERTYPE phType)
360	{
361	LogFlow(("PGMR3HandlerVirtualTypeRegister: enmKind=%d pfnInvalidateR3=%RHv pfnHandlerR3=%RHv pszModRC=%s pszHandlerRC=%s pszDesc=%s\n",
362	enmKind, pfnInvalidateR3, pfnHandlerR3, pszHandlerRC, pszModRC, pszDesc));
363
364	/*
365	* Validate input.
366	*/
367	if (!pszModRC)
368	pszModRC = VMMGC_MAIN_MODULE_NAME;
369	if (!pszHandlerRC)
370	pszHandlerRC = "pgmVirtHandlerRedirectToHC";
371	AssertPtrReturn(pszHandlerRC, VERR_INVALID_POINTER);
372
373	/*
374	* Resolve the GC handler.
375	*/
376	RTRCPTR pfnHandlerRC = NIL_RTRCPTR;
377	int rc = PDMR3LdrGetSymbolRCLazy(pVM, pszModRC, NULL /pszSearchPath/, pszHandlerRC, &pfnHandlerRC);
378	if (RT_SUCCESS(rc))
379	return PGMR3HandlerVirtualTypeRegisterEx(pVM, enmKind, fRelocUserRC,
380	pfnInvalidateR3, pfnHandlerR3,
381	pfnHandlerRC,
382	pszDesc, phType);
383
384	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszModRC, pszHandlerRC, rc));
385	return rc;
386	}
387
388
389	/**
390	* Register a access handler for a virtual range.
391	*
392	* @returns VBox status code.
393	* @param pVM Pointer to the VM.
394	* @param hType The handler type.
395	* @param GCPtr Start address.
396	* @param GCPtrLast Last address (inclusive).
397	* @param pvUserR3 The ring-3 context user argument.
398	* @param pvUserRC The raw-mode context user argument. Whether this is
399	* automatically relocated or not depends on the type.
400	* @param pszDesc Pointer to description string. This must not be freed.
401	*/
402	VMMR3_INT_DECL(int) PGMR3HandlerVirtualRegister(PVM pVM, PVMCPU pVCpu, PGMVIRTHANDLERTYPE hType, RTGCPTR GCPtr, RTGCPTR GCPtrLast,
403	void pvUserR3, RTRCPTR pvUserRC, const char pszDesc)
404	{
405	AssertReturn(!HMIsEnabled(pVM), VERR_NOT_AVAILABLE); /* Not supported/relevant for VT-x and AMD-V. */
406	PPGMVIRTHANDLERTYPEINT pType = PGMVIRTHANDLERTYPEINT_FROM_HANDLE(pVM, hType);
407	Log(("PGMR3HandlerVirtualRegister: GCPhys=%RGp GCPhysLast=%RGp pvUserR3=%RHv pvUserGC=%RRv hType=%#x (%d, %s) pszDesc=%RHv:%s\n",
408	GCPtr, GCPtrLast, pvUserR3, pvUserRC, hType, pType->enmKind, R3STRING(pType->pszDesc), pszDesc, R3STRING(pszDesc)));
409
410	/*
411	* Validate input.
412	*/
413	AssertReturn(pType->u32Magic == PGMVIRTHANDLERTYPEINT_MAGIC, VERR_INVALID_HANDLE);
414	AssertMsgReturn(GCPtr < GCPtrLast, ("GCPtr >= GCPtrLast (%RGp >= %RGp)\n", GCPtr, GCPtrLast), VERR_INVALID_PARAMETER);
415	switch (pType->enmKind)
416	{
417	case PGMVIRTHANDLERKIND_ALL:
418	AssertReleaseMsgReturn( (GCPtr & PAGE_OFFSET_MASK) == 0
419	&& (GCPtrLast & PAGE_OFFSET_MASK) == PAGE_OFFSET_MASK,
420	("PGMVIRTHANDLERKIND_ALL: GCPtr=%RGv GCPtrLast=%RGv\n", GCPtr, GCPtrLast),
421	VERR_NOT_IMPLEMENTED);
422	break;
423	case PGMVIRTHANDLERKIND_WRITE:
424	case PGMVIRTHANDLERKIND_HYPERVISOR:
425	break;
426	default:
427	AssertMsgFailedReturn(("Invalid enmKind=%d!\n", pType->enmKind), VERR_INVALID_PARAMETER);
428	}
429	AssertMsgReturn( (RTRCUINTPTR)pvUserRC < 0x10000
430	\|\| MMHyperR3ToRC(pVM, MMHyperRCToR3(pVM, pvUserRC)) == pvUserRC,
431	("Not RC pointer! pvUserRC=%RRv\n", pvUserRC),
432	VERR_INVALID_PARAMETER);
433
434	/*
435	* Allocate and initialize a new entry.
436	*/
437	unsigned cPages = (RT_ALIGN(GCPtrLast + 1, PAGE_SIZE) - (GCPtr & PAGE_BASE_GC_MASK)) >> PAGE_SHIFT;
438	PPGMVIRTHANDLER pNew;
439	int rc = MMHyperAlloc(pVM, RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[cPages]), 0, MM_TAG_PGM_HANDLERS, (void )&pNew); / @todo r=bird: incorrect member name PhysToVirt? */
440	if (RT_FAILURE(rc))
441	return rc;
442
443	pNew->Core.Key = GCPtr;
444	pNew->Core.KeyLast = GCPtrLast;
445
446	pNew->hType = hType;
447	pNew->pvUserRC = pvUserRC;
448	pNew->pvUserR3 = pvUserR3;
449	pNew->pszDesc = pszDesc ? pszDesc : pType->pszDesc;
450	pNew->cb = GCPtrLast - GCPtr + 1;
451	pNew->cPages = cPages;
452	/* Will be synced at next guest execution attempt. */
453	while (cPages-- > 0)
454	{
455	pNew->aPhysToVirt[cPages].Core.Key = NIL_RTGCPHYS;
456	pNew->aPhysToVirt[cPages].Core.KeyLast = NIL_RTGCPHYS;
457	pNew->aPhysToVirt[cPages].offVirtHandler = -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[cPages]);
458	pNew->aPhysToVirt[cPages].offNextAlias = 0;
459	}
460
461	/*
462	* Try to insert it into the tree.
463	*
464	* The current implementation doesn't allow multiple handlers for
465	* the same range this makes everything much simpler and faster.
466	*/
467	AVLROGCPTRTREE *pRoot = pType->enmKind != PGMVIRTHANDLERKIND_HYPERVISOR
468	? &pVM->pgm.s.CTX_SUFF(pTrees)->VirtHandlers
469	: &pVM->pgm.s.CTX_SUFF(pTrees)->HyperVirtHandlers;
470	pgmLock(pVM);
471	if (*pRoot != 0)
472	{
473	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)RTAvlroGCPtrGetBestFit(pRoot, pNew->Core.Key, true);
474	if ( !pCur
475	\|\| GCPtr > pCur->Core.KeyLast
476	\|\| GCPtrLast < pCur->Core.Key)
477	pCur = (PPGMVIRTHANDLER)RTAvlroGCPtrGetBestFit(pRoot, pNew->Core.Key, false);
478	if ( pCur
479	&& GCPtr <= pCur->Core.KeyLast
480	&& GCPtrLast >= pCur->Core.Key)
481	{
482	/*
483	* The LDT sometimes conflicts with the IDT and LDT ranges while being
484	* updated on linux. So, we don't assert simply log it.
485	*/
486	Log(("PGMR3HandlerVirtualRegister: Conflict with existing range %RGv-%RGv (%s), req. %RGv-%RGv (%s)\n",
487	pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc, GCPtr, GCPtrLast, pszDesc));
488	MMHyperFree(pVM, pNew);
489	pgmUnlock(pVM);
490	return VERR_PGM_HANDLER_VIRTUAL_CONFLICT;
491	}
492	}
493	if (RTAvlroGCPtrInsert(pRoot, &pNew->Core))
494	{
495	if (pType->enmKind != PGMVIRTHANDLERKIND_HYPERVISOR)
496	{
497	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL \| PGM_SYNC_CLEAR_PGM_POOL;
498	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
499	}
500	PGMHandlerVirtualTypeRetain(pVM, hType);
501	pgmUnlock(pVM);
502
503	#ifdef VBOX_WITH_STATISTICS
504	rc = STAMR3RegisterF(pVM, &pNew->Stat, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, pNew->pszDesc,
505	"/PGM/VirtHandler/Calls/%RGv-%RGv", pNew->Core.Key, pNew->Core.KeyLast);
506	AssertRC(rc);
507	#endif
508	return VINF_SUCCESS;
509	}
510
511	pgmUnlock(pVM);
512	AssertFailed();
513	MMHyperFree(pVM, pNew);
514	return VERR_PGM_HANDLER_VIRTUAL_CONFLICT;
515
516	}
517
518
519	/**
520	* Changes the type of a virtual handler.
521	*
522	* The new and old type must have the same access kind.
523	*
524	* @returns VBox status code.
525	* @param pVM Pointer to the VM.
526	* @param GCPtr Start address of the virtual handler.
527	* @param hNewType The new handler type.
528	*/
529	VMMR3_INT_DECL(int) PGMHandlerVirtualChangeType(PVM pVM, RTGCPTR GCPtr, PGMVIRTHANDLERTYPE hNewType)
530	{
531	PPGMVIRTHANDLERTYPEINT pNewType = PGMVIRTHANDLERTYPEINT_FROM_HANDLE(pVM, hNewType);
532	AssertReturn(pNewType->u32Magic == PGMVIRTHANDLERTYPEINT_MAGIC, VERR_INVALID_HANDLE);
533
534	pgmLock(pVM);
535	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)RTAvlroGCPtrGet(&pVM->pgm.s.pTreesR3->VirtHandlers, GCPtr);
536	if (pCur)
537	{
538	PGMVIRTHANDLERTYPE hOldType = pCur->hType;
539	PPGMVIRTHANDLERTYPEINT pOldType = PGMVIRTHANDLERTYPEINT_FROM_HANDLE(pVM, hOldType);
540	if (pOldType != pNewType)
541	{
542	AssertReturnStmt(pNewType->enmKind == pOldType->enmKind, pgmUnlock(pVM), VERR_ACCESS_DENIED);
543	PGMHandlerVirtualTypeRetain(pVM, hNewType);
544	pCur->hType = hNewType;
545	PGMHandlerVirtualTypeRelease(pVM, hOldType);
546	}
547	pgmUnlock(pVM);
548	return VINF_SUCCESS;
549	}
550	pgmUnlock(pVM);
551	AssertMsgFailed(("Range %#x not found!\n", GCPtr));
552	return VERR_INVALID_PARAMETER;
553	}
554
555
556	/**
557	* Deregister an access handler for a virtual range.
558	*
559	* @returns VBox status code.
560	* @param pVM Pointer to the VM.
561	* @param pVCpu Pointer to the cross context CPU structure for the
562	* calling EMT.
563	* @param GCPtr Start address.
564	* @param fHypervisor Set if PGMVIRTHANDLERKIND_HYPERVISOR, false if not.
565	* @thread EMT(pVCpu)
566	*/
567	VMMR3_INT_DECL(int) PGMHandlerVirtualDeregister(PVM pVM, PVMCPU pVCpu, RTGCPTR GCPtr, bool fHypervisor)
568	{
569	pgmLock(pVM);
570
571	PPGMVIRTHANDLER pCur;
572	if (!fHypervisor)
573	{
574	/*
575	* Normal guest handler.
576	*/
577	pCur = (PPGMVIRTHANDLER)RTAvlroGCPtrRemove(&pVM->pgm.s.CTX_SUFF(pTrees)->VirtHandlers, GCPtr);
578	AssertMsgReturnStmt(pCur, ("GCPtr=%RGv\n", GCPtr), pgmUnlock(pVM), VERR_INVALID_PARAMETER);
579	Assert(PGMVIRTANDLER_GET_TYPE(pVM, pCur)->enmKind != PGMVIRTHANDLERKIND_HYPERVISOR);
580
581	Log(("PGMHandlerVirtualDeregister: Removing Virtual (%d) Range %RGv-%RGv %s\n",
582	PGMVIRTANDLER_GET_TYPE(pVM, pCur)->enmKind, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
583
584	/* Reset the flags and remove phys2virt nodes. */
585	for (uint32_t iPage = 0; iPage < pCur->cPages; iPage++)
586	if (pCur->aPhysToVirt[iPage].offNextAlias & PGMPHYS2VIRTHANDLER_IN_TREE)
587	pgmHandlerVirtualClearPage(pVM, pCur, iPage);
588
589	/* Schedule CR3 sync. */
590	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL \| PGM_SYNC_CLEAR_PGM_POOL;
591	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
592	}
593	else
594	{
595	/*
596	* Hypervisor one (hypervisor relocation or termination only).
597	*/
598	pCur = (PPGMVIRTHANDLER)RTAvlroGCPtrRemove(&pVM->pgm.s.CTX_SUFF(pTrees)->HyperVirtHandlers, GCPtr);
599	AssertMsgReturnStmt(pCur, ("GCPtr=%RGv\n", GCPtr), pgmUnlock(pVM), VERR_INVALID_PARAMETER);
600	Assert(PGMVIRTANDLER_GET_TYPE(pVM, pCur)->enmKind == PGMVIRTHANDLERKIND_HYPERVISOR);
601
602	Log(("PGMHandlerVirtualDeregister: Removing Hyper Virtual Range %RGv-%RGv %s\n",
603	pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
604	}
605
606	pgmUnlock(pVM);
607
608	/*
609	* Free it.
610	*/
611	#ifdef VBOX_WITH_STATISTICS
612	STAMR3DeregisterF(pVM->pUVM, "/PGM/VirtHandler/Calls/%RGv-%RGv", pCur->Core.Key, pCur->Core.KeyLast);
613	#endif
614	PGMHandlerVirtualTypeRelease(pVM, pCur->hType);
615	MMHyperFree(pVM, pCur);
616
617	return VINF_SUCCESS;
618	}
619
620
621	/**
622	* Arguments for pgmR3InfoHandlersPhysicalOne and pgmR3InfoHandlersVirtualOne.
623	*/
624	typedef struct PGMHANDLERINFOARG
625	{
626	/** The output helpers.*/
627	PCDBGFINFOHLP pHlp;
628	/** Pointer to the cross context VM handle. */
629	PVM pVM;
630	/** Set if statistics should be dumped. */
631	bool fStats;
632	} PGMHANDLERINFOARG, *PPGMHANDLERINFOARG;
633
634
635	/**
636	* Info callback for 'pgmhandlers'.
637	*
638	* @param pHlp The output helpers.
639	* @param pszArgs The arguments. phys or virt.
640	*/
641	DECLCALLBACK(void) pgmR3InfoHandlers(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
642	{
643	/*
644	* Test input.
645	*/
646	PGMHANDLERINFOARG Args = { pHlp, pVM, /* .fStats = */ true };
647	bool fPhysical = !pszArgs \|\| !*pszArgs;
648	bool fVirtual = fPhysical;
649	bool fHyper = fPhysical;
650	if (!fPhysical)
651	{
652	bool fAll = strstr(pszArgs, "all") != NULL;
653	fPhysical = fAll \|\| strstr(pszArgs, "phys") != NULL;
654	fVirtual = fAll \|\| strstr(pszArgs, "virt") != NULL;
655	fHyper = fAll \|\| strstr(pszArgs, "hyper")!= NULL;
656	Args.fStats = strstr(pszArgs, "nost") == NULL;
657	}
658
659	/*
660	* Dump the handlers.
661	*/
662	if (fPhysical)
663	{
664	pHlp->pfnPrintf(pHlp,
665	"Physical handlers: (PhysHandlers=%d (%#x))\n"
666	"%s %s %s %s HandlerGC UserGC Type Description\n",
667	pVM->pgm.s.pTreesR3->PhysHandlers, pVM->pgm.s.pTreesR3->PhysHandlers,
668	- (int)sizeof(RTGCPHYS) * 2, "From",
669	- (int)sizeof(RTGCPHYS) * 2 - 3, "- To (incl)",
670	- (int)sizeof(RTHCPTR) * 2 - 1, "HandlerHC",
671	- (int)sizeof(RTHCPTR) * 2 - 1, "UserHC");
672	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3InfoHandlersPhysicalOne, &Args);
673	}
674
675	if (fVirtual)
676	{
677	pHlp->pfnPrintf(pHlp,
678	"Virtual handlers:\n"
679	"%s %s %s %s Type Description\n",
680	- (int)sizeof(RTGCPTR) * 2, "From",
681	- (int)sizeof(RTGCPTR) * 2 - 3, "- To (excl)",
682	- (int)sizeof(RTHCPTR) * 2 - 1, "HandlerHC",
683	- (int)sizeof(RTRCPTR) * 2 - 1, "HandlerGC");
684	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3InfoHandlersVirtualOne, &Args);
685	}
686
687	if (fHyper)
688	{
689	pHlp->pfnPrintf(pHlp,
690	"Hypervisor Virtual handlers:\n"
691	"%s %s %s %s Type Description\n",
692	- (int)sizeof(RTGCPTR) * 2, "From",
693	- (int)sizeof(RTGCPTR) * 2 - 3, "- To (excl)",
694	- (int)sizeof(RTHCPTR) * 2 - 1, "HandlerHC",
695	- (int)sizeof(RTRCPTR) * 2 - 1, "HandlerGC");
696	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3InfoHandlersVirtualOne, &Args);
697	}
698	}
699
700
701	/**
702	* Displays one physical handler range.
703	*
704	* @returns 0
705	* @param pNode Pointer to a PGMPHYSHANDLER.
706	* @param pvUser Pointer to command helper functions.
707	*/
708	static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser)
709	{
710	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
711	PPGMHANDLERINFOARG pArgs = (PPGMHANDLERINFOARG)pvUser;
712	PCDBGFINFOHLP pHlp = pArgs->pHlp;
713	PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pArgs->pVM, pCur);
714	const char *pszType;
715	switch (pCurType->enmKind)
716	{
717	case PGMPHYSHANDLERKIND_MMIO: pszType = "MMIO "; break;
718	case PGMPHYSHANDLERKIND_WRITE: pszType = "Write "; break;
719	case PGMPHYSHANDLERKIND_ALL: pszType = "All "; break;
720	default: pszType = "????"; break;
721	}
722	pHlp->pfnPrintf(pHlp,
723	"%RGp - %RGp %RHv %RHv %RRv %RRv %s %s\n",
724	pCur->Core.Key, pCur->Core.KeyLast, pCurType->pfnHandlerR3, pCur->pvUserR3, pCurType->pfnHandlerRC, pCur->pvUserRC,
725	pszType, pCur->pszDesc);
726	#ifdef VBOX_WITH_STATISTICS
727	if (pArgs->fStats)
728	pHlp->pfnPrintf(pHlp, " cPeriods: %9RU64 cTicks: %11RU64 Min: %11RU64 Avg: %11RU64 Max: %11RU64\n",
729	pCur->Stat.cPeriods, pCur->Stat.cTicks, pCur->Stat.cTicksMin,
730	pCur->Stat.cPeriods ? pCur->Stat.cTicks / pCur->Stat.cPeriods : 0, pCur->Stat.cTicksMax);
731	#endif
732	return 0;
733	}
734
735
736	/**
737	* Displays one virtual handler range.
738	*
739	* @returns 0
740	* @param pNode Pointer to a PGMVIRTHANDLER.
741	* @param pvUser Pointer to command helper functions.
742	*/
743	static DECLCALLBACK(int) pgmR3InfoHandlersVirtualOne(PAVLROGCPTRNODECORE pNode, void *pvUser)
744	{
745	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
746	PPGMHANDLERINFOARG pArgs = (PPGMHANDLERINFOARG)pvUser;
747	PCDBGFINFOHLP pHlp = pArgs->pHlp;
748	PPGMVIRTHANDLERTYPEINT pCurType = PGMVIRTANDLER_GET_TYPE(pArgs->pVM, pCur);
749	const char *pszType;
750	switch (pCurType->enmKind)
751	{
752	case PGMVIRTHANDLERKIND_WRITE: pszType = "Write "; break;
753	case PGMVIRTHANDLERKIND_ALL: pszType = "All "; break;
754	case PGMVIRTHANDLERKIND_HYPERVISOR: pszType = "WriteHyp "; break;
755	default: pszType = "????"; break;
756	}
757	pHlp->pfnPrintf(pHlp, "%RGv - %RGv %RHv %RRv %s %s\n",
758	pCur->Core.Key, pCur->Core.KeyLast, pCurType->pfnHandlerR3, pCurType->pfnHandlerRC, pszType, pCur->pszDesc);
759	#ifdef VBOX_WITH_STATISTICS
760	if (pArgs->fStats)
761	pHlp->pfnPrintf(pHlp, " cPeriods: %9RU64 cTicks: %11RU64 Min: %11RU64 Avg: %11RU64 Max: %11RU64\n",
762	pCur->Stat.cPeriods, pCur->Stat.cTicks, pCur->Stat.cTicksMin,
763	pCur->Stat.cPeriods ? pCur->Stat.cTicks / pCur->Stat.cPeriods : 0, pCur->Stat.cTicksMax);
764	#endif
765	return 0;
766	}
767

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMHandler.cpp@ 55890

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