PGMHandler.cpp@ 92155

Last change on this file since 92155 was 91848, checked in by vboxsync, 3 years ago
VMM/NEM,PGM: First bunch changes for watered down guest memory managment for NEM. (Gets stuck in bios.) bugref:10122
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 16.9 KB

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1	/* $Id: PGMHandler.cpp 91848 2021-10-19 23:18:13Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager / Monitor, Access Handlers.
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
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_PGM
23	#define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
24	#include <VBox/vmm/dbgf.h>
25	#include <VBox/vmm/pgm.h>
26	#include <VBox/vmm/cpum.h>
27	#include <VBox/vmm/iom.h>
28	#include <VBox/sup.h>
29	#include <VBox/vmm/mm.h>
30	#include <VBox/vmm/em.h>
31	#include <VBox/vmm/stam.h>
32	#include <VBox/vmm/dbgf.h>
33	#include <VBox/vmm/selm.h>
34	#include <VBox/vmm/ssm.h>
35	#include "PGMInternal.h"
36	#include <VBox/vmm/vm.h>
37	#include "PGMInline.h"
38	#include <VBox/dbg.h>
39
40	#include <VBox/log.h>
41	#include <iprt/assert.h>
42	#include <iprt/alloc.h>
43	#include <iprt/asm.h>
44	#include <iprt/errcore.h>
45	#include <iprt/thread.h>
46	#include <iprt/string.h>
47	#include <VBox/param.h>
48	#include <VBox/vmm/hm.h>
49
50
51	/*********************************************************************************************************************************
52	* Internal Functions *
53	*********************************************************************************************************************************/
54	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser);
55	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser);
56	static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser);
57
58
59
60
61	/**
62	* Register a physical page access handler type, extended version.
63	*
64	* @returns VBox status code.
65	* @param pVM The cross context VM structure.
66	* @param enmKind The kind of access handler.
67	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
68	* @param pfnHandlerR0 Pointer to the ring-0 handler callback.
69	* @param pfnPfHandlerR0 Pointer to the ring-0 \#PF handler callback.
70	* callback.
71	* @param pszDesc The type description.
72	* @param phType Where to return the type handle (cross context
73	* safe).
74	*/
75	VMMR3_INT_DECL(int) PGMR3HandlerPhysicalTypeRegisterEx(PVM pVM, PGMPHYSHANDLERKIND enmKind,
76	PFNPGMPHYSHANDLER pfnHandlerR3,
77	R0PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR0,
78	R0PTRTYPE(PFNPGMRZPHYSPFHANDLER) pfnPfHandlerR0,
79	const char *pszDesc, PPGMPHYSHANDLERTYPE phType)
80	{
81	AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER);
82	AssertReturn(pfnHandlerR0 != NIL_RTR0PTR, VERR_INVALID_POINTER);
83	AssertReturn(pfnPfHandlerR0 != NIL_RTR0PTR, VERR_INVALID_POINTER);
84	AssertPtrReturn(pszDesc, VERR_INVALID_POINTER);
85	AssertReturn( enmKind == PGMPHYSHANDLERKIND_WRITE
86	\|\| enmKind == PGMPHYSHANDLERKIND_ALL
87	\|\| enmKind == PGMPHYSHANDLERKIND_MMIO,
88	VERR_INVALID_PARAMETER);
89
90	PPGMPHYSHANDLERTYPEINT pType;
91	int rc = MMHyperAlloc(pVM, sizeof(pType), 0, MM_TAG_PGM_HANDLER_TYPES, (void *)&pType);
92	if (RT_SUCCESS(rc))
93	{
94	pType->u32Magic = PGMPHYSHANDLERTYPEINT_MAGIC;
95	pType->cRefs = 1;
96	pType->enmKind = enmKind;
97	pType->uState = enmKind == PGMPHYSHANDLERKIND_WRITE
98	? PGM_PAGE_HNDL_PHYS_STATE_WRITE : PGM_PAGE_HNDL_PHYS_STATE_ALL;
99	pType->pfnHandlerR3 = pfnHandlerR3;
100	pType->pfnHandlerR0 = pfnHandlerR0;
101	pType->pfnPfHandlerR0 = pfnPfHandlerR0;
102	pType->pszDesc = pszDesc;
103
104	PGM_LOCK_VOID(pVM);
105	RTListOff32Append(&pVM->pgm.s.CTX_SUFF(pTrees)->HeadPhysHandlerTypes, &pType->ListNode);
106	PGM_UNLOCK(pVM);
107
108	*phType = MMHyperHeapPtrToOffset(pVM, pType);
109	LogFlow(("PGMR3HandlerPhysicalTypeRegisterEx: %p/%#x: enmKind=%d pfnHandlerR3=%RHv pfnHandlerR0=%RHv pszDesc=%s\n",
110	pType, *phType, enmKind, pfnHandlerR3, pfnPfHandlerR0, pszDesc));
111	return VINF_SUCCESS;
112	}
113	*phType = NIL_PGMPHYSHANDLERTYPE;
114	return rc;
115	}
116
117
118	/**
119	* Register a physical page access handler type.
120	*
121	* @returns VBox status code.
122	* @param pVM The cross context VM structure.
123	* @param enmKind The kind of access handler.
124	* @param pfnHandlerR3 Pointer to the ring-3 handler callback.
125	* @param pszModR0 The name of the ring-0 module, NULL is an alias for
126	* the main ring-0 module.
127	* @param pszHandlerR0 The name of the ring-0 handler, NULL if the ring-3
128	* handler should be called.
129	* @param pszPfHandlerR0 The name of the ring-0 \#PF handler, NULL if the
130	* ring-3 handler should be called.
131	* @param pszModRC The name of the raw-mode context module, NULL is an
132	* alias for the main RC module.
133	* @param pszHandlerRC The name of the raw-mode context handler, NULL if
134	* the ring-3 handler should be called.
135	* @param pszPfHandlerRC The name of the raw-mode context \#PF handler, NULL
136	* if the ring-3 handler should be called.
137	* @param pszDesc The type description.
138	* @param phType Where to return the type handle (cross context
139	* safe).
140	*/
141	VMMR3DECL(int) PGMR3HandlerPhysicalTypeRegister(PVM pVM, PGMPHYSHANDLERKIND enmKind,
142	R3PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR3,
143	const char pszModR0, const char pszHandlerR0, const char *pszPfHandlerR0,
144	const char pszModRC, const char pszHandlerRC, const char *pszPfHandlerRC,
145	const char *pszDesc, PPGMPHYSHANDLERTYPE phType)
146	{
147	LogFlow(("PGMR3HandlerPhysicalTypeRegister: enmKind=%d pfnHandlerR3=%RHv pszModR0=%s pszHandlerR0=%s pszPfHandlerR0=%s pszModRC=%s pszHandlerRC=%s pszPfHandlerRC=%s pszDesc=%s\n",
148	enmKind, pfnHandlerR3, pszModR0, pszHandlerR0, pszPfHandlerR0, pszModRC, pszHandlerRC, pszPfHandlerRC, pszDesc));
149
150	/*
151	* Validate input.
152	*/
153	AssertPtrReturn(pfnHandlerR3, VERR_INVALID_POINTER);
154	AssertPtrNullReturn(pszModR0, VERR_INVALID_POINTER);
155	AssertPtrNullReturn(pszHandlerR0, VERR_INVALID_POINTER);
156	AssertPtrNullReturn(pszPfHandlerR0, VERR_INVALID_POINTER);
157	AssertPtrNullReturn(pszModRC, VERR_INVALID_POINTER);
158	AssertPtrNullReturn(pszHandlerRC, VERR_INVALID_POINTER);
159	AssertPtrNullReturn(pszPfHandlerRC, VERR_INVALID_POINTER);
160
161	/*
162	* Resolve the R0 handlers.
163	*/
164	R0PTRTYPE(PFNPGMPHYSHANDLER) pfnHandlerR0 = NIL_RTR0PTR;
165	int rc = PDMR3LdrGetSymbolR0Lazy(pVM, pszHandlerR0 ? pszModR0 : NULL, NULL /pszSearchPath/,
166	pszHandlerR0 ? pszHandlerR0 : "pgmPhysHandlerRedirectToHC", &pfnHandlerR0);
167	if (RT_SUCCESS(rc))
168	{
169	R0PTRTYPE(PFNPGMR0PHYSPFHANDLER) pfnPfHandlerR0 = NIL_RTR0PTR;
170	rc = PDMR3LdrGetSymbolR0Lazy(pVM, pszPfHandlerR0 ? pszModR0 : NULL, NULL /pszSearchPath/,
171	pszPfHandlerR0 ? pszPfHandlerR0 : "pgmPhysPfHandlerRedirectToHC", &pfnPfHandlerR0);
172	if (RT_SUCCESS(rc))
173	{
174	/*
175	* Resolve the GC handler.
176	*/
177	RTRCPTR pfnHandlerRC = NIL_RTRCPTR;
178	RTRCPTR pfnPfHandlerRC = NIL_RTRCPTR;
179	if (VM_IS_RAW_MODE_ENABLED(pVM))
180	{
181	rc = PDMR3LdrGetSymbolRCLazy(pVM, pszHandlerRC ? pszModRC : NULL, NULL /pszSearchPath/,
182	pszHandlerRC ? pszHandlerRC : "pgmPhysHandlerRedirectToHC", &pfnHandlerRC);
183	if (RT_SUCCESS(rc))
184	{
185	rc = PDMR3LdrGetSymbolRCLazy(pVM, pszPfHandlerRC ? pszModRC : NULL, NULL /pszSearchPath/,
186	pszPfHandlerRC ? pszPfHandlerRC : "pgmPhysPfHandlerRedirectToHC", &pfnPfHandlerRC);
187	AssertMsgRC(rc, ("Failed to resolve %s.%s, rc=%Rrc.\n", pszPfHandlerRC ? pszModRC : VMMRC_MAIN_MODULE_NAME,
188	pszPfHandlerRC ? pszPfHandlerRC : "pgmPhysPfHandlerRedirectToHC", rc));
189	}
190	else
191	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszHandlerRC ? pszModRC : VMMRC_MAIN_MODULE_NAME,
192	pszHandlerRC ? pszHandlerRC : "pgmPhysHandlerRedirectToHC", rc));
193
194	}
195	if (RT_SUCCESS(rc))
196	return PGMR3HandlerPhysicalTypeRegisterEx(pVM, enmKind, pfnHandlerR3,
197	pfnHandlerR0, pfnPfHandlerR0, pszDesc, phType);
198	}
199	else
200	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszPfHandlerR0 ? pszModR0 : VMMR0_MAIN_MODULE_NAME,
201	pszPfHandlerR0 ? pszPfHandlerR0 : "pgmPhysHandlerRedirectToHC", rc));
202	}
203	else
204	AssertMsgFailed(("Failed to resolve %s.%s, rc=%Rrc.\n", pszHandlerR0 ? pszModR0 : VMMR0_MAIN_MODULE_NAME,
205	pszHandlerR0 ? pszHandlerR0 : "pgmPhysHandlerRedirectToHC", rc));
206
207	return rc;
208	}
209
210
211	/**
212	* Updates the physical page access handlers.
213	*
214	* @param pVM The cross context VM structure.
215	* @remark Only used when restoring a saved state.
216	*/
217	void pgmR3HandlerPhysicalUpdateAll(PVM pVM)
218	{
219	LogFlow(("pgmHandlerPhysicalUpdateAll:\n"));
220
221	/*
222	* Clear and set.
223	* (the right -> left on the setting pass is just bird speculating on cache hits)
224	*/
225	PGM_LOCK_VOID(pVM);
226	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, true, pgmR3HandlerPhysicalOneClear, pVM);
227	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, false, pgmR3HandlerPhysicalOneSet, pVM);
228	PGM_UNLOCK(pVM);
229	}
230
231
232	/**
233	* Clears all the page level flags for one physical handler range.
234	*
235	* @returns 0
236	* @param pNode Pointer to a PGMPHYSHANDLER.
237	* @param pvUser Pointer to the VM.
238	*/
239	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneClear(PAVLROGCPHYSNODECORE pNode, void *pvUser)
240	{
241	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
242	PPGMRAMRANGE pRamHint = NULL;
243	RTGCPHYS GCPhys = pCur->Core.Key;
244	RTUINT cPages = pCur->cPages;
245	PVM pVM = (PVM)pvUser;
246	for (;;)
247	{
248	PPGMPAGE pPage;
249	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
250	if (RT_SUCCESS(rc))
251	{
252	PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, PGM_PAGE_HNDL_PHYS_STATE_NONE);
253
254	#ifdef VBOX_WITH_NATIVE_NEM
255	/* Tell NEM about the protection change. */
256	if (VM_IS_NEM_ENABLED(pVM))
257	{
258	uint8_t u2State = PGM_PAGE_GET_NEM_STATE(pPage);
259	PGMPAGETYPE enmType = (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage);
260	NEMHCNotifyPhysPageProtChanged(pVM, GCPhys, PGM_PAGE_GET_HCPHYS(pPage),
261	PGM_RAMRANGE_CALC_PAGE_R3PTR(pRamHint, GCPhys),
262	pgmPhysPageCalcNemProtection(pPage, enmType), enmType, &u2State);
263	PGM_PAGE_SET_NEM_STATE(pPage, u2State);
264	}
265	#endif
266	}
267	else
268	AssertRC(rc);
269
270	if (--cPages == 0)
271	return 0;
272	GCPhys += PAGE_SIZE;
273	}
274	}
275
276
277	/**
278	* Sets all the page level flags for one physical handler range.
279	*
280	* @returns 0
281	* @param pNode Pointer to a PGMPHYSHANDLER.
282	* @param pvUser Pointer to the VM.
283	*/
284	static DECLCALLBACK(int) pgmR3HandlerPhysicalOneSet(PAVLROGCPHYSNODECORE pNode, void *pvUser)
285	{
286	PVM pVM = (PVM)pvUser;
287	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
288	PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pVM, pCur);
289	unsigned uState = pCurType->uState;
290	PPGMRAMRANGE pRamHint = NULL;
291	RTGCPHYS GCPhys = pCur->Core.Key;
292	RTUINT cPages = pCur->cPages;
293	for (;;)
294	{
295	PPGMPAGE pPage;
296	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
297	if (RT_SUCCESS(rc))
298	{
299	PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, uState);
300
301	#ifdef VBOX_WITH_NATIVE_NEM
302	/* Tell NEM about the protection change. */
303	if (VM_IS_NEM_ENABLED(pVM))
304	{
305	uint8_t u2State = PGM_PAGE_GET_NEM_STATE(pPage);
306	PGMPAGETYPE enmType = (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage);
307	NEMHCNotifyPhysPageProtChanged(pVM, GCPhys, PGM_PAGE_GET_HCPHYS(pPage),
308	PGM_RAMRANGE_CALC_PAGE_R3PTR(pRamHint, GCPhys),
309	pgmPhysPageCalcNemProtection(pPage, enmType), enmType, &u2State);
310	PGM_PAGE_SET_NEM_STATE(pPage, u2State);
311	}
312	#endif
313	}
314	else
315	AssertRC(rc);
316
317	if (--cPages == 0)
318	return 0;
319	GCPhys += PAGE_SIZE;
320	}
321	}
322
323
324	/**
325	* Arguments for pgmR3InfoHandlersPhysicalOne and pgmR3InfoHandlersVirtualOne.
326	*/
327	typedef struct PGMHANDLERINFOARG
328	{
329	/** The output helpers.*/
330	PCDBGFINFOHLP pHlp;
331	/** Pointer to the cross context VM handle. */
332	PVM pVM;
333	/** Set if statistics should be dumped. */
334	bool fStats;
335	} PGMHANDLERINFOARG, *PPGMHANDLERINFOARG;
336
337
338	/**
339	* Info callback for 'pgmhandlers'.
340	*
341	* @param pVM The cross context VM structure.
342	* @param pHlp The output helpers.
343	* @param pszArgs The arguments. phys or virt.
344	*/
345	DECLCALLBACK(void) pgmR3InfoHandlers(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
346	{
347	/*
348	* Parse options.
349	*/
350	PGMHANDLERINFOARG Args = { pHlp, pVM, /* .fStats = */ true };
351	if (pszArgs)
352	Args.fStats = strstr(pszArgs, "nost") == NULL;
353
354	/*
355	* Dump the handlers.
356	*/
357	pHlp->pfnPrintf(pHlp,
358	"Physical handlers: (PhysHandlers=%d (%#x))\n"
359	"%s %s %s %s HandlerGC UserGC Type Description\n",
360	pVM->pgm.s.pTreesR3->PhysHandlers, pVM->pgm.s.pTreesR3->PhysHandlers,
361	- (int)sizeof(RTGCPHYS) * 2, "From",
362	- (int)sizeof(RTGCPHYS) * 2 - 3, "- To (incl)",
363	- (int)sizeof(RTHCPTR) * 2 - 1, "HandlerHC",
364	- (int)sizeof(RTHCPTR) * 2 - 1, "UserHC");
365	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3InfoHandlersPhysicalOne, &Args);
366	}
367
368
369	/**
370	* Displays one physical handler range.
371	*
372	* @returns 0
373	* @param pNode Pointer to a PGMPHYSHANDLER.
374	* @param pvUser Pointer to command helper functions.
375	*/
376	static DECLCALLBACK(int) pgmR3InfoHandlersPhysicalOne(PAVLROGCPHYSNODECORE pNode, void *pvUser)
377	{
378	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
379	PPGMHANDLERINFOARG pArgs = (PPGMHANDLERINFOARG)pvUser;
380	PCDBGFINFOHLP pHlp = pArgs->pHlp;
381	PPGMPHYSHANDLERTYPEINT pCurType = PGMPHYSHANDLER_GET_TYPE(pArgs->pVM, pCur);
382	const char *pszType;
383	switch (pCurType->enmKind)
384	{
385	case PGMPHYSHANDLERKIND_MMIO: pszType = "MMIO "; break;
386	case PGMPHYSHANDLERKIND_WRITE: pszType = "Write "; break;
387	case PGMPHYSHANDLERKIND_ALL: pszType = "All "; break;
388	default: pszType = "????"; break;
389	}
390	pHlp->pfnPrintf(pHlp,
391	"%RGp - %RGp %RHv %RHv %RHv %RHv %s %s\n",
392	pCur->Core.Key, pCur->Core.KeyLast, pCurType->pfnHandlerR3, pCur->pvUserR3,
393	pCurType->pfnPfHandlerR0, pCur->pvUserR0, pszType, pCur->pszDesc);
394	#ifdef VBOX_WITH_STATISTICS
395	if (pArgs->fStats)
396	pHlp->pfnPrintf(pHlp, " cPeriods: %9RU64 cTicks: %11RU64 Min: %11RU64 Avg: %11RU64 Max: %11RU64\n",
397	pCur->Stat.cPeriods, pCur->Stat.cTicks, pCur->Stat.cTicksMin,
398	pCur->Stat.cPeriods ? pCur->Stat.cTicks / pCur->Stat.cPeriods : 0, pCur->Stat.cTicksMax);
399	#endif
400	return 0;
401	}
402

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMHandler.cpp@ 92155

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