PGMSavedState.cpp@ 43858

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1	/* $Id: PGMSavedState.cpp 42931 2012-08-23 08:45:35Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor, The Saved State Part.
4	*/
5
6	/*
7	* Copyright (C) 2006-2009 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	#include <VBox/vmm/pgm.h>
24	#include <VBox/vmm/stam.h>
25	#include <VBox/vmm/ssm.h>
26	#include <VBox/vmm/pdmdrv.h>
27	#include <VBox/vmm/pdmdev.h>
28	#include "PGMInternal.h"
29	#include <VBox/vmm/vm.h>
30	#include "PGMInline.h"
31
32	#include <VBox/param.h>
33	#include <VBox/err.h>
34	#include <VBox/vmm/ftm.h>
35
36	#include <iprt/asm.h>
37	#include <iprt/assert.h>
38	#include <iprt/crc.h>
39	#include <iprt/mem.h>
40	#include <iprt/sha.h>
41	#include <iprt/string.h>
42	#include <iprt/thread.h>
43
44
45	/*******************************************************************************
46	* Defined Constants And Macros *
47	*******************************************************************************/
48	/** Saved state data unit version. */
49	#define PGM_SAVED_STATE_VERSION 14
50	/** Saved state data unit version before the PAE PDPE registers. */
51	#define PGM_SAVED_STATE_VERSION_PRE_PAE 13
52	/** Saved state data unit version after this includes ballooned page flags in
53	* the state (see @bugref{5515}). */
54	#define PGM_SAVED_STATE_VERSION_BALLOON_BROKEN 12
55	/** Saved state before the balloon change. */
56	#define PGM_SAVED_STATE_VERSION_PRE_BALLOON 11
57	/** Saved state data unit version used during 3.1 development, misses the RAM
58	* config. */
59	#define PGM_SAVED_STATE_VERSION_NO_RAM_CFG 10
60	/** Saved state data unit version for 3.0 (pre teleportation). */
61	#define PGM_SAVED_STATE_VERSION_3_0_0 9
62	/** Saved state data unit version for 2.2.2 and later. */
63	#define PGM_SAVED_STATE_VERSION_2_2_2 8
64	/** Saved state data unit version for 2.2.0. */
65	#define PGM_SAVED_STATE_VERSION_RR_DESC 7
66	/** Saved state data unit version. */
67	#define PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE 6
68
69
70	/** @name Sparse state record types
71	* @{ */
72	/** Zero page. No data. */
73	#define PGM_STATE_REC_RAM_ZERO UINT8_C(0x00)
74	/** Raw page. */
75	#define PGM_STATE_REC_RAM_RAW UINT8_C(0x01)
76	/** Raw MMIO2 page. */
77	#define PGM_STATE_REC_MMIO2_RAW UINT8_C(0x02)
78	/** Zero MMIO2 page. */
79	#define PGM_STATE_REC_MMIO2_ZERO UINT8_C(0x03)
80	/** Virgin ROM page. Followed by protection (8-bit) and the raw bits. */
81	#define PGM_STATE_REC_ROM_VIRGIN UINT8_C(0x04)
82	/** Raw shadowed ROM page. The protection (8-bit) precedes the raw bits. */
83	#define PGM_STATE_REC_ROM_SHW_RAW UINT8_C(0x05)
84	/** Zero shadowed ROM page. The protection (8-bit) is the only payload. */
85	#define PGM_STATE_REC_ROM_SHW_ZERO UINT8_C(0x06)
86	/** ROM protection (8-bit). */
87	#define PGM_STATE_REC_ROM_PROT UINT8_C(0x07)
88	/** Ballooned page. No data. */
89	#define PGM_STATE_REC_RAM_BALLOONED UINT8_C(0x08)
90	/** The last record type. */
91	#define PGM_STATE_REC_LAST PGM_STATE_REC_RAM_BALLOONED
92	/** End marker. */
93	#define PGM_STATE_REC_END UINT8_C(0xff)
94	/** Flag indicating that the data is preceded by the page address.
95	* For RAW pages this is a RTGCPHYS. For MMIO2 and ROM pages this is a 8-bit
96	* range ID and a 32-bit page index.
97	*/
98	#define PGM_STATE_REC_FLAG_ADDR UINT8_C(0x80)
99	/** @} */
100
101	/** The CRC-32 for a zero page. */
102	#define PGM_STATE_CRC32_ZERO_PAGE UINT32_C(0xc71c0011)
103	/** The CRC-32 for a zero half page. */
104	#define PGM_STATE_CRC32_ZERO_HALF_PAGE UINT32_C(0xf1e8ba9e)
105
106
107	/*******************************************************************************
108	* Structures and Typedefs *
109	*******************************************************************************/
110	/** For loading old saved states. (pre-smp) */
111	typedef struct
112	{
113	/** If set no conflict checks are required. (boolean) */
114	bool fMappingsFixed;
115	/** Size of fixed mapping */
116	uint32_t cbMappingFixed;
117	/** Base address (GC) of fixed mapping */
118	RTGCPTR GCPtrMappingFixed;
119	/** A20 gate mask.
120	* Our current approach to A20 emulation is to let REM do it and don't bother
121	* anywhere else. The interesting guests will be operating with it enabled anyway.
122	* But should the need arise, we'll subject physical addresses to this mask. */
123	RTGCPHYS GCPhysA20Mask;
124	/** A20 gate state - boolean! */
125	bool fA20Enabled;
126	/** The guest paging mode. */
127	PGMMODE enmGuestMode;
128	} PGMOLD;
129
130
131	/*******************************************************************************
132	* Global Variables *
133	*******************************************************************************/
134	/** PGM fields to save/load. */
135
136	static const SSMFIELD s_aPGMFields[] =
137	{
138	SSMFIELD_ENTRY( PGM, fMappingsFixed),
139	SSMFIELD_ENTRY_GCPTR( PGM, GCPtrMappingFixed),
140	SSMFIELD_ENTRY( PGM, cbMappingFixed),
141	SSMFIELD_ENTRY( PGM, cBalloonedPages),
142	SSMFIELD_ENTRY_TERM()
143	};
144
145	static const SSMFIELD s_aPGMFieldsPreBalloon[] =
146	{
147	SSMFIELD_ENTRY( PGM, fMappingsFixed),
148	SSMFIELD_ENTRY_GCPTR( PGM, GCPtrMappingFixed),
149	SSMFIELD_ENTRY( PGM, cbMappingFixed),
150	SSMFIELD_ENTRY_TERM()
151	};
152
153	static const SSMFIELD s_aPGMCpuFields[] =
154	{
155	SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
156	SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
157	SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
158	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[0]),
159	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[1]),
160	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[2]),
161	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[3]),
162	SSMFIELD_ENTRY_TERM()
163	};
164
165	static const SSMFIELD s_aPGMCpuFieldsPrePae[] =
166	{
167	SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
168	SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
169	SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
170	SSMFIELD_ENTRY_TERM()
171	};
172
173	static const SSMFIELD s_aPGMFields_Old[] =
174	{
175	SSMFIELD_ENTRY( PGMOLD, fMappingsFixed),
176	SSMFIELD_ENTRY_GCPTR( PGMOLD, GCPtrMappingFixed),
177	SSMFIELD_ENTRY( PGMOLD, cbMappingFixed),
178	SSMFIELD_ENTRY( PGMOLD, fA20Enabled),
179	SSMFIELD_ENTRY_GCPHYS( PGMOLD, GCPhysA20Mask),
180	SSMFIELD_ENTRY( PGMOLD, enmGuestMode),
181	SSMFIELD_ENTRY_TERM()
182	};
183
184
185	/**
186	* Find the ROM tracking structure for the given page.
187	*
188	* @returns Pointer to the ROM page structure. NULL if the caller didn't check
189	* that it's a ROM page.
190	* @param pVM Pointer to the VM.
191	* @param GCPhys The address of the ROM page.
192	*/
193	static PPGMROMPAGE pgmR3GetRomPage(PVM pVM, RTGCPHYS GCPhys) /** @todo change this to take a hint. */
194	{
195	for (PPGMROMRANGE pRomRange = pVM->pgm.s.CTX_SUFF(pRomRanges);
196	pRomRange;
197	pRomRange = pRomRange->CTX_SUFF(pNext))
198	{
199	RTGCPHYS off = GCPhys - pRomRange->GCPhys;
200	if (GCPhys - pRomRange->GCPhys < pRomRange->cb)
201	return &pRomRange->aPages[off >> PAGE_SHIFT];
202	}
203	return NULL;
204	}
205
206
207	/**
208	* Prepares the ROM pages for a live save.
209	*
210	* @returns VBox status code.
211	* @param pVM Pointer to the VM.
212	*/
213	static int pgmR3PrepRomPages(PVM pVM)
214	{
215	/*
216	* Initialize the live save tracking in the ROM page descriptors.
217	*/
218	pgmLock(pVM);
219	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
220	{
221	PPGMRAMRANGE pRamHint = NULL;;
222	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
223
224	for (uint32_t iPage = 0; iPage < cPages; iPage++)
225	{
226	pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)PGMROMPROT_INVALID;
227	pRom->aPages[iPage].LiveSave.fWrittenTo = false;
228	pRom->aPages[iPage].LiveSave.fDirty = true;
229	pRom->aPages[iPage].LiveSave.fDirtiedRecently = true;
230	if (!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED))
231	{
232	if (PGMROMPROT_IS_ROM(pRom->aPages[iPage].enmProt))
233	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
234	else
235	{
236	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
237	PPGMPAGE pPage;
238	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
239	AssertLogRelMsgRC(rc, ("%Rrc GCPhys=%RGp\n", rc, GCPhys));
240	if (RT_SUCCESS(rc))
241	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(pPage) && !PGM_PAGE_IS_BALLOONED(pPage);
242	else
243	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
244	}
245	}
246	}
247
248	pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
249	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
250	pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
251	}
252	pgmUnlock(pVM);
253
254	return VINF_SUCCESS;
255	}
256
257
258	/**
259	* Assigns IDs to the ROM ranges and saves them.
260	*
261	* @returns VBox status code.
262	* @param pVM Pointer to the VM.
263	* @param pSSM Saved state handle.
264	*/
265	static int pgmR3SaveRomRanges(PVM pVM, PSSMHANDLE pSSM)
266	{
267	pgmLock(pVM);
268	uint8_t id = 1;
269	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3, id++)
270	{
271	pRom->idSavedState = id;
272	SSMR3PutU8(pSSM, id);
273	SSMR3PutStrZ(pSSM, ""); /* device name */
274	SSMR3PutU32(pSSM, 0); /* device instance */
275	SSMR3PutU8(pSSM, 0); /* region */
276	SSMR3PutStrZ(pSSM, pRom->pszDesc);
277	SSMR3PutGCPhys(pSSM, pRom->GCPhys);
278	int rc = SSMR3PutGCPhys(pSSM, pRom->cb);
279	if (RT_FAILURE(rc))
280	break;
281	}
282	pgmUnlock(pVM);
283	return SSMR3PutU8(pSSM, UINT8_MAX);
284	}
285
286
287	/**
288	* Loads the ROM range ID assignments.
289	*
290	* @returns VBox status code.
291	*
292	* @param pVM Pointer to the VM.
293	* @param pSSM The saved state handle.
294	*/
295	static int pgmR3LoadRomRanges(PVM pVM, PSSMHANDLE pSSM)
296	{
297	PGM_LOCK_ASSERT_OWNER(pVM);
298
299	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
300	pRom->idSavedState = UINT8_MAX;
301
302	for (;;)
303	{
304	/*
305	* Read the data.
306	*/
307	uint8_t id;
308	int rc = SSMR3GetU8(pSSM, &id);
309	if (RT_FAILURE(rc))
310	return rc;
311	if (id == UINT8_MAX)
312	{
313	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
314	AssertLogRelMsg(pRom->idSavedState != UINT8_MAX,
315	("The \"%s\" ROM was not found in the saved state. Probably due to some misconfiguration\n",
316	pRom->pszDesc));
317	return VINF_SUCCESS; /* the end */
318	}
319	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
320
321	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
322	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
323	AssertLogRelRCReturn(rc, rc);
324
325	uint32_t uInstance;
326	SSMR3GetU32(pSSM, &uInstance);
327	uint8_t iRegion;
328	SSMR3GetU8(pSSM, &iRegion);
329
330	char szDesc[64];
331	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
332	AssertLogRelRCReturn(rc, rc);
333
334	RTGCPHYS GCPhys;
335	SSMR3GetGCPhys(pSSM, &GCPhys);
336	RTGCPHYS cb;
337	rc = SSMR3GetGCPhys(pSSM, &cb);
338	if (RT_FAILURE(rc))
339	return rc;
340	AssertLogRelMsgReturn(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%RGp %s\n", GCPhys, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
341	AssertLogRelMsgReturn(!(cb & PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
342
343	/*
344	* Locate a matching ROM range.
345	*/
346	AssertLogRelMsgReturn( uInstance == 0
347	&& iRegion == 0
348	&& szDevName[0] == '\0',
349	("GCPhys=%RGp %s\n", GCPhys, szDesc),
350	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
351	PPGMROMRANGE pRom;
352	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
353	{
354	if ( pRom->idSavedState == UINT8_MAX
355	&& !strcmp(pRom->pszDesc, szDesc))
356	{
357	pRom->idSavedState = id;
358	break;
359	}
360	}
361	if (!pRom)
362	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("ROM at %RGp by the name '%s' was not found"), GCPhys, szDesc);
363	} /* forever */
364	}
365
366
367	/**
368	* Scan ROM pages.
369	*
370	* @param pVM Pointer to the VM.
371	*/
372	static void pgmR3ScanRomPages(PVM pVM)
373	{
374	/*
375	* The shadow ROMs.
376	*/
377	pgmLock(pVM);
378	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
379	{
380	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
381	{
382	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
383	for (uint32_t iPage = 0; iPage < cPages; iPage++)
384	{
385	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
386	if (pRomPage->LiveSave.fWrittenTo)
387	{
388	pRomPage->LiveSave.fWrittenTo = false;
389	if (!pRomPage->LiveSave.fDirty)
390	{
391	pRomPage->LiveSave.fDirty = true;
392	pVM->pgm.s.LiveSave.Rom.cReadyPages--;
393	pVM->pgm.s.LiveSave.Rom.cDirtyPages++;
394	}
395	pRomPage->LiveSave.fDirtiedRecently = true;
396	}
397	else
398	pRomPage->LiveSave.fDirtiedRecently = false;
399	}
400	}
401	}
402	pgmUnlock(pVM);
403	}
404
405
406	/**
407	* Takes care of the virgin ROM pages in the first pass.
408	*
409	* This is an attempt at simplifying the handling of ROM pages a little bit.
410	* This ASSUMES that no new ROM ranges will be added and that they won't be
411	* relinked in any way.
412	*
413	* @param pVM Pointer to the VM.
414	* @param pSSM The SSM handle.
415	* @param fLiveSave Whether we're in a live save or not.
416	*/
417	static int pgmR3SaveRomVirginPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave)
418	{
419	if (FTMIsDeltaLoadSaveActive(pVM))
420	return VINF_SUCCESS; /* nothing to do as nothing has changed here */
421
422	pgmLock(pVM);
423	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
424	{
425	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
426	for (uint32_t iPage = 0; iPage < cPages; iPage++)
427	{
428	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
429	PGMROMPROT enmProt = pRom->aPages[iPage].enmProt;
430
431	/* Get the virgin page descriptor. */
432	PPGMPAGE pPage;
433	if (PGMROMPROT_IS_ROM(enmProt))
434	pPage = pgmPhysGetPage(pVM, GCPhys);
435	else
436	pPage = &pRom->aPages[iPage].Virgin;
437
438	/* Get the page bits. (Cannot use pgmPhysGCPhys2CCPtrInternalReadOnly here!) */
439	int rc = VINF_SUCCESS;
440	char abPage[PAGE_SIZE];
441	if ( !PGM_PAGE_IS_ZERO(pPage)
442	&& !PGM_PAGE_IS_BALLOONED(pPage))
443	{
444	void const *pvPage;
445	rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
446	if (RT_SUCCESS(rc))
447	memcpy(abPage, pvPage, PAGE_SIZE);
448	}
449	else
450	ASMMemZeroPage(abPage);
451	pgmUnlock(pVM);
452	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
453
454	/* Save it. */
455	if (iPage > 0)
456	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN);
457	else
458	{
459	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN \| PGM_STATE_REC_FLAG_ADDR);
460	SSMR3PutU8(pSSM, pRom->idSavedState);
461	SSMR3PutU32(pSSM, iPage);
462	}
463	SSMR3PutU8(pSSM, (uint8_t)enmProt);
464	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
465	if (RT_FAILURE(rc))
466	return rc;
467
468	/* Update state. */
469	pgmLock(pVM);
470	pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)enmProt;
471	if (fLiveSave)
472	{
473	pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
474	pVM->pgm.s.LiveSave.Rom.cReadyPages++;
475	pVM->pgm.s.LiveSave.cSavedPages++;
476	}
477	}
478	}
479	pgmUnlock(pVM);
480	return VINF_SUCCESS;
481	}
482
483
484	/**
485	* Saves dirty pages in the shadowed ROM ranges.
486	*
487	* Used by pgmR3LiveExecPart2 and pgmR3SaveExecMemory.
488	*
489	* @returns VBox status code.
490	* @param pVM Pointer to the VM.
491	* @param pSSM The SSM handle.
492	* @param fLiveSave Whether it's a live save or not.
493	* @param fFinalPass Whether this is the final pass or not.
494	*/
495	static int pgmR3SaveShadowedRomPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, bool fFinalPass)
496	{
497	if (FTMIsDeltaLoadSaveActive(pVM))
498	return VINF_SUCCESS; /* nothing to do as we deal with those pages separately */
499
500	/*
501	* The Shadowed ROMs.
502	*
503	* ASSUMES that the ROM ranges are fixed.
504	* ASSUMES that all the ROM ranges are mapped.
505	*/
506	pgmLock(pVM);
507	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
508	{
509	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
510	{
511	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
512	uint32_t iPrevPage = cPages;
513	for (uint32_t iPage = 0; iPage < cPages; iPage++)
514	{
515	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
516	if ( !fLiveSave
517	\|\| ( pRomPage->LiveSave.fDirty
518	&& ( ( !pRomPage->LiveSave.fDirtiedRecently
519	&& !pRomPage->LiveSave.fWrittenTo)
520	\|\| fFinalPass
521	)
522	)
523	)
524	{
525	uint8_t abPage[PAGE_SIZE];
526	PGMROMPROT enmProt = pRomPage->enmProt;
527	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
528	PPGMPAGE pPage = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : pgmPhysGetPage(pVM, GCPhys);
529	bool fZero = PGM_PAGE_IS_ZERO(pPage) \|\| PGM_PAGE_IS_BALLOONED(pPage); Assert(!PGM_PAGE_IS_BALLOONED(pPage)); /* Shouldn't be ballooned. */
530	int rc = VINF_SUCCESS;
531	if (!fZero)
532	{
533	void const *pvPage;
534	rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
535	if (RT_SUCCESS(rc))
536	memcpy(abPage, pvPage, PAGE_SIZE);
537	}
538	if (fLiveSave && RT_SUCCESS(rc))
539	{
540	pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
541	pRomPage->LiveSave.fDirty = false;
542	pVM->pgm.s.LiveSave.Rom.cReadyPages++;
543	pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
544	pVM->pgm.s.LiveSave.cSavedPages++;
545	}
546	pgmUnlock(pVM);
547	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
548
549	if (iPage - 1U == iPrevPage && iPage > 0)
550	SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW));
551	else
552	{
553	SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW) \| PGM_STATE_REC_FLAG_ADDR);
554	SSMR3PutU8(pSSM, pRom->idSavedState);
555	SSMR3PutU32(pSSM, iPage);
556	}
557	rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
558	if (!fZero)
559	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
560	if (RT_FAILURE(rc))
561	return rc;
562
563	pgmLock(pVM);
564	iPrevPage = iPage;
565	}
566	/*
567	* In the final pass, make sure the protection is in sync.
568	*/
569	else if ( fFinalPass
570	&& pRomPage->LiveSave.u8Prot != pRomPage->enmProt)
571	{
572	PGMROMPROT enmProt = pRomPage->enmProt;
573	pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
574	pgmUnlock(pVM);
575
576	if (iPage - 1U == iPrevPage && iPage > 0)
577	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT);
578	else
579	{
580	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT \| PGM_STATE_REC_FLAG_ADDR);
581	SSMR3PutU8(pSSM, pRom->idSavedState);
582	SSMR3PutU32(pSSM, iPage);
583	}
584	int rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
585	if (RT_FAILURE(rc))
586	return rc;
587
588	pgmLock(pVM);
589	iPrevPage = iPage;
590	}
591	}
592	}
593	}
594	pgmUnlock(pVM);
595	return VINF_SUCCESS;
596	}
597
598
599	/**
600	* Cleans up ROM pages after a live save.
601	*
602	* @param pVM Pointer to the VM.
603	*/
604	static void pgmR3DoneRomPages(PVM pVM)
605	{
606	NOREF(pVM);
607	}
608
609
610	/**
611	* Prepares the MMIO2 pages for a live save.
612	*
613	* @returns VBox status code.
614	* @param pVM Pointer to the VM.
615	*/
616	static int pgmR3PrepMmio2Pages(PVM pVM)
617	{
618	/*
619	* Initialize the live save tracking in the MMIO2 ranges.
620	* ASSUME nothing changes here.
621	*/
622	pgmLock(pVM);
623	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
624	{
625	uint32_t const cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
626	pgmUnlock(pVM);
627
628	PPGMLIVESAVEMMIO2PAGE paLSPages = (PPGMLIVESAVEMMIO2PAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMLIVESAVEMMIO2PAGE) * cPages);
629	if (!paLSPages)
630	return VERR_NO_MEMORY;
631	for (uint32_t iPage = 0; iPage < cPages; iPage++)
632	{
633	/* Initialize it as a dirty zero page. */
634	paLSPages[iPage].fDirty = true;
635	paLSPages[iPage].cUnchangedScans = 0;
636	paLSPages[iPage].fZero = true;
637	paLSPages[iPage].u32CrcH1 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
638	paLSPages[iPage].u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
639	}
640
641	pgmLock(pVM);
642	pMmio2->paLSPages = paLSPages;
643	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages += cPages;
644	}
645	pgmUnlock(pVM);
646	return VINF_SUCCESS;
647	}
648
649
650	/**
651	* Assigns IDs to the MMIO2 ranges and saves them.
652	*
653	* @returns VBox status code.
654	* @param pVM Pointer to the VM.
655	* @param pSSM Saved state handle.
656	*/
657	static int pgmR3SaveMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
658	{
659	pgmLock(pVM);
660	uint8_t id = 1;
661	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3, id++)
662	{
663	pMmio2->idSavedState = id;
664	SSMR3PutU8(pSSM, id);
665	SSMR3PutStrZ(pSSM, pMmio2->pDevInsR3->pReg->szName);
666	SSMR3PutU32(pSSM, pMmio2->pDevInsR3->iInstance);
667	SSMR3PutU8(pSSM, pMmio2->iRegion);
668	SSMR3PutStrZ(pSSM, pMmio2->RamRange.pszDesc);
669	int rc = SSMR3PutGCPhys(pSSM, pMmio2->RamRange.cb);
670	if (RT_FAILURE(rc))
671	break;
672	}
673	pgmUnlock(pVM);
674	return SSMR3PutU8(pSSM, UINT8_MAX);
675	}
676
677
678	/**
679	* Loads the MMIO2 range ID assignments.
680	*
681	* @returns VBox status code.
682	*
683	* @param pVM Pointer to the VM.
684	* @param pSSM The saved state handle.
685	*/
686	static int pgmR3LoadMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
687	{
688	PGM_LOCK_ASSERT_OWNER(pVM);
689
690	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
691	pMmio2->idSavedState = UINT8_MAX;
692
693	for (;;)
694	{
695	/*
696	* Read the data.
697	*/
698	uint8_t id;
699	int rc = SSMR3GetU8(pSSM, &id);
700	if (RT_FAILURE(rc))
701	return rc;
702	if (id == UINT8_MAX)
703	{
704	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
705	AssertLogRelMsg(pMmio2->idSavedState != UINT8_MAX, ("%s\n", pMmio2->RamRange.pszDesc));
706	return VINF_SUCCESS; /* the end */
707	}
708	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
709
710	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
711	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
712	AssertLogRelRCReturn(rc, rc);
713
714	uint32_t uInstance;
715	SSMR3GetU32(pSSM, &uInstance);
716	uint8_t iRegion;
717	SSMR3GetU8(pSSM, &iRegion);
718
719	char szDesc[64];
720	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
721	AssertLogRelRCReturn(rc, rc);
722
723	RTGCPHYS cb;
724	rc = SSMR3GetGCPhys(pSSM, &cb);
725	AssertLogRelMsgReturn(!(cb & PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
726
727	/*
728	* Locate a matching MMIO2 range.
729	*/
730	PPGMMMIO2RANGE pMmio2;
731	for (pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
732	{
733	if ( pMmio2->idSavedState == UINT8_MAX
734	&& pMmio2->iRegion == iRegion
735	&& pMmio2->pDevInsR3->iInstance == uInstance
736	&& !strcmp(pMmio2->pDevInsR3->pReg->szName, szDevName))
737	{
738	pMmio2->idSavedState = id;
739	break;
740	}
741	}
742	if (!pMmio2)
743	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to locate a MMIO2 range called '%s' owned by %s/%u, region %d"),
744	szDesc, szDevName, uInstance, iRegion);
745
746	/*
747	* Validate the configuration, the size of the MMIO2 region should be
748	* the same.
749	*/
750	if (cb != pMmio2->RamRange.cb)
751	{
752	LogRel(("PGM: MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp\n",
753	pMmio2->RamRange.pszDesc, cb, pMmio2->RamRange.cb));
754	if (cb > pMmio2->RamRange.cb) /* bad idea? */
755	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp"),
756	pMmio2->RamRange.pszDesc, cb, pMmio2->RamRange.cb);
757	}
758	} /* forever */
759	}
760
761
762	/**
763	* Scans one MMIO2 page.
764	*
765	* @returns True if changed, false if unchanged.
766	*
767	* @param pVM Pointer to the VM.
768	* @param pbPage The page bits.
769	* @param pLSPage The live save tracking structure for the page.
770	*
771	*/
772	DECLINLINE(bool) pgmR3ScanMmio2Page(PVM pVM, uint8_t const *pbPage, PPGMLIVESAVEMMIO2PAGE pLSPage)
773	{
774	/*
775	* Special handling of zero pages.
776	*/
777	bool const fZero = pLSPage->fZero;
778	if (fZero)
779	{
780	if (ASMMemIsZeroPage(pbPage))
781	{
782	/* Not modified. */
783	if (pLSPage->fDirty)
784	pLSPage->cUnchangedScans++;
785	return false;
786	}
787
788	pLSPage->fZero = false;
789	pLSPage->u32CrcH1 = RTCrc32(pbPage, PAGE_SIZE / 2);
790	}
791	else
792	{
793	/*
794	* CRC the first half, if it doesn't match the page is dirty and
795	* we won't check the 2nd half (we'll do that next time).
796	*/
797	uint32_t u32CrcH1 = RTCrc32(pbPage, PAGE_SIZE / 2);
798	if (u32CrcH1 == pLSPage->u32CrcH1)
799	{
800	uint32_t u32CrcH2 = RTCrc32(pbPage + PAGE_SIZE / 2, PAGE_SIZE / 2);
801	if (u32CrcH2 == pLSPage->u32CrcH2)
802	{
803	/* Probably not modified. */
804	if (pLSPage->fDirty)
805	pLSPage->cUnchangedScans++;
806	return false;
807	}
808
809	pLSPage->u32CrcH2 = u32CrcH2;
810	}
811	else
812	{
813	pLSPage->u32CrcH1 = u32CrcH1;
814	if ( u32CrcH1 == PGM_STATE_CRC32_ZERO_HALF_PAGE
815	&& ASMMemIsZeroPage(pbPage))
816	{
817	pLSPage->u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
818	pLSPage->fZero = true;
819	}
820	}
821	}
822
823	/* dirty page path */
824	pLSPage->cUnchangedScans = 0;
825	if (!pLSPage->fDirty)
826	{
827	pLSPage->fDirty = true;
828	pVM->pgm.s.LiveSave.Mmio2.cReadyPages--;
829	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages++;
830	if (fZero)
831	pVM->pgm.s.LiveSave.Mmio2.cZeroPages--;
832	}
833	return true;
834	}
835
836
837	/**
838	* Scan for MMIO2 page modifications.
839	*
840	* @param pVM Pointer to the VM.
841	* @param uPass The pass number.
842	*/
843	static void pgmR3ScanMmio2Pages(PVM pVM, uint32_t uPass)
844	{
845	/*
846	* Since this is a bit expensive we lower the scan rate after a little while.
847	*/
848	if ( ( (uPass & 3) != 0
849	&& uPass > 10)
850	\|\| uPass == SSM_PASS_FINAL)
851	return;
852
853	pgmLock(pVM); /* paranoia */
854	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
855	{
856	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
857	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
858	pgmUnlock(pVM);
859
860	for (uint32_t iPage = 0; iPage < cPages; iPage++)
861	{
862	uint8_t const pbPage = (uint8_t const )pMmio2->pvR3 + iPage * PAGE_SIZE;
863	pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]);
864	}
865
866	pgmLock(pVM);
867	}
868	pgmUnlock(pVM);
869
870	}
871
872
873	/**
874	* Save quiescent MMIO2 pages.
875	*
876	* @returns VBox status code.
877	* @param pVM Pointer to the VM.
878	* @param pSSM The SSM handle.
879	* @param fLiveSave Whether it's a live save or not.
880	* @param uPass The pass number.
881	*/
882	static int pgmR3SaveMmio2Pages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
883	{
884	/** @todo implement live saving of MMIO2 pages. (Need some way of telling the
885	* device that we wish to know about changes.) */
886
887	int rc = VINF_SUCCESS;
888	if (uPass == SSM_PASS_FINAL)
889	{
890	/*
891	* The mop up round.
892	*/
893	pgmLock(pVM);
894	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3;
895	pMmio2 && RT_SUCCESS(rc);
896	pMmio2 = pMmio2->pNextR3)
897	{
898	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
899	uint8_t const pbPage = (uint8_t const )pMmio2->RamRange.pvR3;
900	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
901	uint32_t iPageLast = cPages;
902	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += PAGE_SIZE)
903	{
904	uint8_t u8Type;
905	if (!fLiveSave)
906	u8Type = ASMMemIsZeroPage(pbPage) ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
907	else
908	{
909	/* Try figure if it's a clean page, compare the SHA-1 to be really sure. */
910	if ( !paLSPages[iPage].fDirty
911	&& !pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
912	{
913	if (paLSPages[iPage].fZero)
914	continue;
915
916	uint8_t abSha1Hash[RTSHA1_HASH_SIZE];
917	RTSha1(pbPage, PAGE_SIZE, abSha1Hash);
918	if (!memcmp(abSha1Hash, paLSPages[iPage].abSha1Saved, sizeof(abSha1Hash)))
919	continue;
920	}
921	u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
922	pVM->pgm.s.LiveSave.cSavedPages++;
923	}
924
925	if (iPage != 0 && iPage == iPageLast + 1)
926	rc = SSMR3PutU8(pSSM, u8Type);
927	else
928	{
929	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
930	SSMR3PutU8(pSSM, pMmio2->idSavedState);
931	rc = SSMR3PutU32(pSSM, iPage);
932	}
933	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
934	rc = SSMR3PutMem(pSSM, pbPage, PAGE_SIZE);
935	if (RT_FAILURE(rc))
936	break;
937	iPageLast = iPage;
938	}
939	}
940	pgmUnlock(pVM);
941	}
942	/*
943	* Reduce the rate after a little while since the current MMIO2 approach is
944	* a bit expensive.
945	* We position it two passes after the scan pass to avoid saving busy pages.
946	*/
947	else if ( uPass <= 10
948	\|\| (uPass & 3) == 2)
949	{
950	pgmLock(pVM);
951	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3;
952	pMmio2 && RT_SUCCESS(rc);
953	pMmio2 = pMmio2->pNextR3)
954	{
955	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
956	uint8_t const pbPage = (uint8_t const )pMmio2->RamRange.pvR3;
957	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
958	uint32_t iPageLast = cPages;
959	pgmUnlock(pVM);
960
961	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += PAGE_SIZE)
962	{
963	/* Skip clean pages and pages which hasn't quiesced. */
964	if (!paLSPages[iPage].fDirty)
965	continue;
966	if (paLSPages[iPage].cUnchangedScans < 3)
967	continue;
968	if (pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
969	continue;
970
971	/* Save it. */
972	bool const fZero = paLSPages[iPage].fZero;
973	uint8_t abPage[PAGE_SIZE];
974	if (!fZero)
975	{
976	memcpy(abPage, pbPage, PAGE_SIZE);
977	RTSha1(abPage, PAGE_SIZE, paLSPages[iPage].abSha1Saved);
978	}
979
980	uint8_t u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
981	if (iPage != 0 && iPage == iPageLast + 1)
982	rc = SSMR3PutU8(pSSM, u8Type);
983	else
984	{
985	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
986	SSMR3PutU8(pSSM, pMmio2->idSavedState);
987	rc = SSMR3PutU32(pSSM, iPage);
988	}
989	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
990	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
991	if (RT_FAILURE(rc))
992	break;
993
994	/* Housekeeping. */
995	paLSPages[iPage].fDirty = false;
996	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages--;
997	pVM->pgm.s.LiveSave.Mmio2.cReadyPages++;
998	if (u8Type == PGM_STATE_REC_MMIO2_ZERO)
999	pVM->pgm.s.LiveSave.Mmio2.cZeroPages++;
1000	pVM->pgm.s.LiveSave.cSavedPages++;
1001	iPageLast = iPage;
1002	}
1003
1004	pgmLock(pVM);
1005	}
1006	pgmUnlock(pVM);
1007	}
1008
1009	return rc;
1010	}
1011
1012
1013	/**
1014	* Cleans up MMIO2 pages after a live save.
1015	*
1016	* @param pVM Pointer to the VM.
1017	*/
1018	static void pgmR3DoneMmio2Pages(PVM pVM)
1019	{
1020	/*
1021	* Free the tracking structures for the MMIO2 pages.
1022	* We do the freeing outside the lock in case the VM is running.
1023	*/
1024	pgmLock(pVM);
1025	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
1026	{
1027	void *pvMmio2ToFree = pMmio2->paLSPages;
1028	if (pvMmio2ToFree)
1029	{
1030	pMmio2->paLSPages = NULL;
1031	pgmUnlock(pVM);
1032	MMR3HeapFree(pvMmio2ToFree);
1033	pgmLock(pVM);
1034	}
1035	}
1036	pgmUnlock(pVM);
1037	}
1038
1039
1040	/**
1041	* Prepares the RAM pages for a live save.
1042	*
1043	* @returns VBox status code.
1044	* @param pVM Pointer to the VM.
1045	*/
1046	static int pgmR3PrepRamPages(PVM pVM)
1047	{
1048
1049	/*
1050	* Try allocating tracking structures for the ram ranges.
1051	*
1052	* To avoid lock contention, we leave the lock every time we're allocating
1053	* a new array. This means we'll have to ditch the allocation and start
1054	* all over again if the RAM range list changes in-between.
1055	*
1056	* Note! pgmR3SaveDone will always be called and it is therefore responsible
1057	* for cleaning up.
1058	*/
1059	PPGMRAMRANGE pCur;
1060	pgmLock(pVM);
1061	do
1062	{
1063	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1064	{
1065	if ( !pCur->paLSPages
1066	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1067	{
1068	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1069	uint32_t const cPages = pCur->cb >> PAGE_SHIFT;
1070	pgmUnlock(pVM);
1071	PPGMLIVESAVERAMPAGE paLSPages = (PPGMLIVESAVERAMPAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, cPages * sizeof(PGMLIVESAVERAMPAGE));
1072	if (!paLSPages)
1073	return VERR_NO_MEMORY;
1074	pgmLock(pVM);
1075	if (pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1076	{
1077	pgmUnlock(pVM);
1078	MMR3HeapFree(paLSPages);
1079	pgmLock(pVM);
1080	break; /* try again */
1081	}
1082	pCur->paLSPages = paLSPages;
1083
1084	/*
1085	* Initialize the array.
1086	*/
1087	uint32_t iPage = cPages;
1088	while (iPage-- > 0)
1089	{
1090	/** @todo yield critsect! (after moving this away from EMT0) */
1091	PCPGMPAGE pPage = &pCur->aPages[iPage];
1092	paLSPages[iPage].cDirtied = 0;
1093	paLSPages[iPage].fDirty = 1; /* everything is dirty at this time */
1094	paLSPages[iPage].fWriteMonitored = 0;
1095	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1096	paLSPages[iPage].u2Reserved = 0;
1097	switch (PGM_PAGE_GET_TYPE(pPage))
1098	{
1099	case PGMPAGETYPE_RAM:
1100	if ( PGM_PAGE_IS_ZERO(pPage)
1101	\|\| PGM_PAGE_IS_BALLOONED(pPage))
1102	{
1103	paLSPages[iPage].fZero = 1;
1104	paLSPages[iPage].fShared = 0;
1105	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1106	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1107	#endif
1108	}
1109	else if (PGM_PAGE_IS_SHARED(pPage))
1110	{
1111	paLSPages[iPage].fZero = 0;
1112	paLSPages[iPage].fShared = 1;
1113	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1114	paLSPages[iPage].u32Crc = UINT32_MAX;
1115	#endif
1116	}
1117	else
1118	{
1119	paLSPages[iPage].fZero = 0;
1120	paLSPages[iPage].fShared = 0;
1121	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1122	paLSPages[iPage].u32Crc = UINT32_MAX;
1123	#endif
1124	}
1125	paLSPages[iPage].fIgnore = 0;
1126	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1127	break;
1128
1129	case PGMPAGETYPE_ROM_SHADOW:
1130	case PGMPAGETYPE_ROM:
1131	{
1132	paLSPages[iPage].fZero = 0;
1133	paLSPages[iPage].fShared = 0;
1134	paLSPages[iPage].fDirty = 0;
1135	paLSPages[iPage].fIgnore = 1;
1136	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1137	paLSPages[iPage].u32Crc = UINT32_MAX;
1138	#endif
1139	pVM->pgm.s.LiveSave.cIgnoredPages++;
1140	break;
1141	}
1142
1143	default:
1144	AssertMsgFailed(("%R[pgmpage]", pPage));
1145	case PGMPAGETYPE_MMIO2:
1146	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
1147	paLSPages[iPage].fZero = 0;
1148	paLSPages[iPage].fShared = 0;
1149	paLSPages[iPage].fDirty = 0;
1150	paLSPages[iPage].fIgnore = 1;
1151	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1152	paLSPages[iPage].u32Crc = UINT32_MAX;
1153	#endif
1154	pVM->pgm.s.LiveSave.cIgnoredPages++;
1155	break;
1156
1157	case PGMPAGETYPE_MMIO:
1158	paLSPages[iPage].fZero = 0;
1159	paLSPages[iPage].fShared = 0;
1160	paLSPages[iPage].fDirty = 0;
1161	paLSPages[iPage].fIgnore = 1;
1162	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1163	paLSPages[iPage].u32Crc = UINT32_MAX;
1164	#endif
1165	pVM->pgm.s.LiveSave.cIgnoredPages++;
1166	break;
1167	}
1168	}
1169	}
1170	}
1171	} while (pCur);
1172	pgmUnlock(pVM);
1173
1174	return VINF_SUCCESS;
1175	}
1176
1177
1178	/**
1179	* Saves the RAM configuration.
1180	*
1181	* @returns VBox status code.
1182	* @param pVM Pointer to the VM.
1183	* @param pSSM The saved state handle.
1184	*/
1185	static int pgmR3SaveRamConfig(PVM pVM, PSSMHANDLE pSSM)
1186	{
1187	uint32_t cbRamHole = 0;
1188	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
1189	AssertRCReturn(rc, rc);
1190
1191	uint64_t cbRam = 0;
1192	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0);
1193	AssertRCReturn(rc, rc);
1194
1195	SSMR3PutU32(pSSM, cbRamHole);
1196	return SSMR3PutU64(pSSM, cbRam);
1197	}
1198
1199
1200	/**
1201	* Loads and verifies the RAM configuration.
1202	*
1203	* @returns VBox status code.
1204	* @param pVM Pointer to the VM.
1205	* @param pSSM The saved state handle.
1206	*/
1207	static int pgmR3LoadRamConfig(PVM pVM, PSSMHANDLE pSSM)
1208	{
1209	uint32_t cbRamHoleCfg = 0;
1210	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHoleCfg, MM_RAM_HOLE_SIZE_DEFAULT);
1211	AssertRCReturn(rc, rc);
1212
1213	uint64_t cbRamCfg = 0;
1214	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRamCfg, 0);
1215	AssertRCReturn(rc, rc);
1216
1217	uint32_t cbRamHoleSaved;
1218	SSMR3GetU32(pSSM, &cbRamHoleSaved);
1219
1220	uint64_t cbRamSaved;
1221	rc = SSMR3GetU64(pSSM, &cbRamSaved);
1222	AssertRCReturn(rc, rc);
1223
1224	if ( cbRamHoleCfg != cbRamHoleSaved
1225	\|\| cbRamCfg != cbRamSaved)
1226	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Ram config mismatch: saved=%RX64/%RX32 config=%RX64/%RX32 (RAM/Hole)"),
1227	cbRamSaved, cbRamHoleSaved, cbRamCfg, cbRamHoleCfg);
1228	return VINF_SUCCESS;
1229	}
1230
1231	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1232
1233	/**
1234	* Calculates the CRC-32 for a RAM page and updates the live save page tracking
1235	* info with it.
1236	*
1237	* @param pVM Pointer to the VM.
1238	* @param pCur The current RAM range.
1239	* @param paLSPages The current array of live save page tracking
1240	* structures.
1241	* @param iPage The page index.
1242	*/
1243	static void pgmR3StateCalcCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage)
1244	{
1245	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1246	PGMPAGEMAPLOCK PgMpLck;
1247	void const *pvPage;
1248	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1249	if (RT_SUCCESS(rc))
1250	{
1251	paLSPages[iPage].u32Crc = RTCrc32(pvPage, PAGE_SIZE);
1252	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1253	}
1254	else
1255	paLSPages[iPage].u32Crc = UINT32_MAX; /* Invalid */
1256	}
1257
1258
1259	/**
1260	* Verifies the CRC-32 for a page given it's raw bits.
1261	*
1262	* @param pvPage The page bits.
1263	* @param pCur The current RAM range.
1264	* @param paLSPages The current array of live save page tracking
1265	* structures.
1266	* @param iPage The page index.
1267	*/
1268	static void pgmR3StateVerifyCrc32ForPage(void const pvPage, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char pszWhere)
1269	{
1270	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1271	{
1272	uint32_t u32Crc = RTCrc32(pvPage, PAGE_SIZE);
1273	Assert( ( !PGM_PAGE_IS_ZERO(&pCur->aPages[iPage])
1274	&& !PGM_PAGE_IS_BALLOONED(&pCur->aPages[iPage]))
1275	\|\| u32Crc == PGM_STATE_CRC32_ZERO_PAGE);
1276	AssertMsg(paLSPages[iPage].u32Crc == u32Crc,
1277	("%08x != %08x for %RGp %R[pgmpage] %s\n", paLSPages[iPage].u32Crc, u32Crc,
1278	pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage], pszWhere));
1279	}
1280	}
1281
1282
1283	/**
1284	* Verifies the CRC-32 for a RAM page.
1285	*
1286	* @param pVM Pointer to the VM.
1287	* @param pCur The current RAM range.
1288	* @param paLSPages The current array of live save page tracking
1289	* structures.
1290	* @param iPage The page index.
1291	*/
1292	static void pgmR3StateVerifyCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char *pszWhere)
1293	{
1294	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1295	{
1296	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1297	PGMPAGEMAPLOCK PgMpLck;
1298	void const *pvPage;
1299	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1300	if (RT_SUCCESS(rc))
1301	{
1302	pgmR3StateVerifyCrc32ForPage(pvPage, pCur, paLSPages, iPage, pszWhere);
1303	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1304	}
1305	}
1306	}
1307
1308	#endif /* PGMLIVESAVERAMPAGE_WITH_CRC32 */
1309
1310	/**
1311	* Scan for RAM page modifications and reprotect them.
1312	*
1313	* @param pVM Pointer to the VM.
1314	* @param fFinalPass Whether this is the final pass or not.
1315	*/
1316	static void pgmR3ScanRamPages(PVM pVM, bool fFinalPass)
1317	{
1318	/*
1319	* The RAM.
1320	*/
1321	RTGCPHYS GCPhysCur = 0;
1322	PPGMRAMRANGE pCur;
1323	pgmLock(pVM);
1324	do
1325	{
1326	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1327	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1328	{
1329	if ( pCur->GCPhysLast > GCPhysCur
1330	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1331	{
1332	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1333	uint32_t cPages = pCur->cb >> PAGE_SHIFT;
1334	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> PAGE_SHIFT;
1335	GCPhysCur = 0;
1336	for (; iPage < cPages; iPage++)
1337	{
1338	/* Do yield first. */
1339	if ( !fFinalPass
1340	#ifndef PGMLIVESAVERAMPAGE_WITH_CRC32
1341	&& (iPage & 0x7ff) == 0x100
1342	#endif
1343	&& PDMR3CritSectYield(&pVM->pgm.s.CritSectX)
1344	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1345	{
1346	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1347	break; /* restart */
1348	}
1349
1350	/* Skip already ignored pages. */
1351	if (paLSPages[iPage].fIgnore)
1352	continue;
1353
1354	if (RT_LIKELY(PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]) == PGMPAGETYPE_RAM))
1355	{
1356	/*
1357	* A RAM page.
1358	*/
1359	switch (PGM_PAGE_GET_STATE(&pCur->aPages[iPage]))
1360	{
1361	case PGM_PAGE_STATE_ALLOCATED:
1362	/** @todo Optimize this: Don't always re-enable write
1363	* monitoring if the page is known to be very busy. */
1364	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1365	{
1366	AssertMsg(paLSPages[iPage].fWriteMonitored,
1367	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage]));
1368	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1369	Assert(pVM->pgm.s.cWrittenToPages > 0);
1370	pVM->pgm.s.cWrittenToPages--;
1371	}
1372	else
1373	{
1374	AssertMsg(!paLSPages[iPage].fWriteMonitored,
1375	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage]));
1376	pVM->pgm.s.LiveSave.Ram.cMonitoredPages++;
1377	}
1378
1379	if (!paLSPages[iPage].fDirty)
1380	{
1381	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1382	if (paLSPages[iPage].fZero)
1383	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1384	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1385	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1386	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1387	}
1388
1389	pgmPhysPageWriteMonitor(pVM, &pCur->aPages[iPage],
1390	pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT));
1391	paLSPages[iPage].fWriteMonitored = 1;
1392	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1393	paLSPages[iPage].fDirty = 1;
1394	paLSPages[iPage].fZero = 0;
1395	paLSPages[iPage].fShared = 0;
1396	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1397	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1398	#endif
1399	break;
1400
1401	case PGM_PAGE_STATE_WRITE_MONITORED:
1402	Assert(paLSPages[iPage].fWriteMonitored);
1403	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) == 0)
1404	{
1405	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1406	if (paLSPages[iPage].fWriteMonitoredJustNow)
1407	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1408	else
1409	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "scan");
1410	#endif
1411	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1412	}
1413	else
1414	{
1415	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1416	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1417	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1418	#endif
1419	if (!paLSPages[iPage].fDirty)
1420	{
1421	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1422	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1423	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1424	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1425	}
1426	}
1427	break;
1428
1429	case PGM_PAGE_STATE_ZERO:
1430	case PGM_PAGE_STATE_BALLOONED:
1431	if (!paLSPages[iPage].fZero)
1432	{
1433	if (!paLSPages[iPage].fDirty)
1434	{
1435	paLSPages[iPage].fDirty = 1;
1436	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1437	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1438	}
1439	paLSPages[iPage].fZero = 1;
1440	paLSPages[iPage].fShared = 0;
1441	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1442	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1443	#endif
1444	}
1445	break;
1446
1447	case PGM_PAGE_STATE_SHARED:
1448	if (!paLSPages[iPage].fShared)
1449	{
1450	if (!paLSPages[iPage].fDirty)
1451	{
1452	paLSPages[iPage].fDirty = 1;
1453	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1454	if (paLSPages[iPage].fZero)
1455	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1456	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1457	}
1458	paLSPages[iPage].fZero = 0;
1459	paLSPages[iPage].fShared = 1;
1460	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1461	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1462	#endif
1463	}
1464	break;
1465	}
1466	}
1467	else
1468	{
1469	/*
1470	* All other types => Ignore the page.
1471	*/
1472	Assert(!paLSPages[iPage].fIgnore); /* skipped before switch */
1473	paLSPages[iPage].fIgnore = 1;
1474	if (paLSPages[iPage].fWriteMonitored)
1475	{
1476	/** @todo this doesn't hold water when we start monitoring MMIO2 and ROM shadow
1477	* pages! */
1478	if (RT_UNLIKELY(PGM_PAGE_GET_STATE(&pCur->aPages[iPage]) == PGM_PAGE_STATE_WRITE_MONITORED))
1479	{
1480	AssertMsgFailed(("%R[pgmpage]", &pCur->aPages[iPage])); /* shouldn't happen. */
1481	PGM_PAGE_SET_STATE(pVM, &pCur->aPages[iPage], PGM_PAGE_STATE_ALLOCATED);
1482	Assert(pVM->pgm.s.cMonitoredPages > 0);
1483	pVM->pgm.s.cMonitoredPages--;
1484	}
1485	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1486	{
1487	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1488	Assert(pVM->pgm.s.cWrittenToPages > 0);
1489	pVM->pgm.s.cWrittenToPages--;
1490	}
1491	pVM->pgm.s.LiveSave.Ram.cMonitoredPages--;
1492	}
1493
1494	/** @todo the counting doesn't quite work out here. fix later? */
1495	if (paLSPages[iPage].fDirty)
1496	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1497	else
1498	{
1499	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1500	if (paLSPages[iPage].fZero)
1501	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1502	}
1503	pVM->pgm.s.LiveSave.cIgnoredPages++;
1504	}
1505	} /* for each page in range */
1506
1507	if (GCPhysCur != 0)
1508	break; /* Yield + ramrange change */
1509	GCPhysCur = pCur->GCPhysLast;
1510	}
1511	} /* for each range */
1512	} while (pCur);
1513	pgmUnlock(pVM);
1514	}
1515
1516
1517	/**
1518	* Save quiescent RAM pages.
1519	*
1520	* @returns VBox status code.
1521	* @param pVM Pointer to the VM.
1522	* @param pSSM The SSM handle.
1523	* @param fLiveSave Whether it's a live save or not.
1524	* @param uPass The pass number.
1525	*/
1526	static int pgmR3SaveRamPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
1527	{
1528	NOREF(fLiveSave);
1529
1530	/*
1531	* The RAM.
1532	*/
1533	RTGCPHYS GCPhysLast = NIL_RTGCPHYS;
1534	RTGCPHYS GCPhysCur = 0;
1535	PPGMRAMRANGE pCur;
1536	bool fFTMDeltaSaveActive = FTMIsDeltaLoadSaveActive(pVM);
1537
1538	pgmLock(pVM);
1539	do
1540	{
1541	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1542	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1543	{
1544	if ( pCur->GCPhysLast > GCPhysCur
1545	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1546	{
1547	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1548	uint32_t cPages = pCur->cb >> PAGE_SHIFT;
1549	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> PAGE_SHIFT;
1550	GCPhysCur = 0;
1551	for (; iPage < cPages; iPage++)
1552	{
1553	/* Do yield first. */
1554	if ( uPass != SSM_PASS_FINAL
1555	&& (iPage & 0x7ff) == 0x100
1556	&& PDMR3CritSectYield(&pVM->pgm.s.CritSectX)
1557	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1558	{
1559	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1560	break; /* restart */
1561	}
1562
1563	PPGMPAGE pCurPage = &pCur->aPages[iPage];
1564
1565	/*
1566	* Only save pages that haven't changed since last scan and are dirty.
1567	*/
1568	if ( uPass != SSM_PASS_FINAL
1569	&& paLSPages)
1570	{
1571	if (!paLSPages[iPage].fDirty)
1572	continue;
1573	if (paLSPages[iPage].fWriteMonitoredJustNow)
1574	continue;
1575	if (paLSPages[iPage].fIgnore)
1576	continue;
1577	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM) /* in case of recent remappings */
1578	continue;
1579	if ( PGM_PAGE_GET_STATE(pCurPage)
1580	!= ( paLSPages[iPage].fZero
1581	? PGM_PAGE_STATE_ZERO
1582	: paLSPages[iPage].fShared
1583	? PGM_PAGE_STATE_SHARED
1584	: PGM_PAGE_STATE_WRITE_MONITORED))
1585	continue;
1586	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) > 0)
1587	continue;
1588	}
1589	else
1590	{
1591	if ( paLSPages
1592	&& !paLSPages[iPage].fDirty
1593	&& !paLSPages[iPage].fIgnore)
1594	{
1595	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1596	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1597	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#1");
1598	#endif
1599	continue;
1600	}
1601	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1602	continue;
1603	}
1604
1605	/*
1606	* Do the saving outside the PGM critsect since SSM may block on I/O.
1607	*/
1608	int rc;
1609	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1610	bool fZero = PGM_PAGE_IS_ZERO(pCurPage);
1611	bool fBallooned = PGM_PAGE_IS_BALLOONED(pCurPage);
1612	bool fSkipped = false;
1613
1614	if (!fZero && !fBallooned)
1615	{
1616	/*
1617	* Copy the page and then save it outside the lock (since any
1618	* SSM call may block).
1619	*/
1620	uint8_t abPage[PAGE_SIZE];
1621	PGMPAGEMAPLOCK PgMpLck;
1622	void const *pvPage;
1623	rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pCurPage, GCPhys, &pvPage, &PgMpLck);
1624	if (RT_SUCCESS(rc))
1625	{
1626	memcpy(abPage, pvPage, PAGE_SIZE);
1627	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1628	if (paLSPages)
1629	pgmR3StateVerifyCrc32ForPage(abPage, pCur, paLSPages, iPage, "save#3");
1630	#endif
1631	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1632	}
1633	pgmUnlock(pVM);
1634	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
1635
1636	/* Try save some memory when restoring. */
1637	if (!ASMMemIsZeroPage(pvPage))
1638	{
1639	if (fFTMDeltaSaveActive)
1640	{
1641	if ( PGM_PAGE_IS_WRITTEN_TO(pCurPage)
1642	\|\| PGM_PAGE_IS_FT_DIRTY(pCurPage))
1643	{
1644	if (GCPhys == GCPhysLast + PAGE_SIZE)
1645	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
1646	else
1647	{
1648	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW \| PGM_STATE_REC_FLAG_ADDR);
1649	SSMR3PutGCPhys(pSSM, GCPhys);
1650	}
1651	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
1652	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pCurPage);
1653	PGM_PAGE_CLEAR_FT_DIRTY(pCurPage);
1654	}
1655	/* else nothing changed, so skip it. */
1656	else
1657	fSkipped = true;
1658	}
1659	else
1660	{
1661	if (GCPhys == GCPhysLast + PAGE_SIZE)
1662	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
1663	else
1664	{
1665	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW \| PGM_STATE_REC_FLAG_ADDR);
1666	SSMR3PutGCPhys(pSSM, GCPhys);
1667	}
1668	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
1669	}
1670	}
1671	else
1672	{
1673	if (GCPhys == GCPhysLast + PAGE_SIZE)
1674	rc = SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO);
1675	else
1676	{
1677	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO \| PGM_STATE_REC_FLAG_ADDR);
1678	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1679	}
1680	}
1681	}
1682	else
1683	{
1684	/*
1685	* Dirty zero or ballooned page.
1686	*/
1687	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1688	if (paLSPages)
1689	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#2");
1690	#endif
1691	pgmUnlock(pVM);
1692
1693	uint8_t u8RecType = fBallooned ? PGM_STATE_REC_RAM_BALLOONED : PGM_STATE_REC_RAM_ZERO;
1694	if (GCPhys == GCPhysLast + PAGE_SIZE)
1695	rc = SSMR3PutU8(pSSM, u8RecType);
1696	else
1697	{
1698	SSMR3PutU8(pSSM, u8RecType \| PGM_STATE_REC_FLAG_ADDR);
1699	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1700	}
1701	}
1702	if (RT_FAILURE(rc))
1703	return rc;
1704
1705	pgmLock(pVM);
1706	if (!fSkipped)
1707	GCPhysLast = GCPhys;
1708	if (paLSPages)
1709	{
1710	paLSPages[iPage].fDirty = 0;
1711	pVM->pgm.s.LiveSave.Ram.cReadyPages++;
1712	if (fZero)
1713	pVM->pgm.s.LiveSave.Ram.cZeroPages++;
1714	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1715	pVM->pgm.s.LiveSave.cSavedPages++;
1716	}
1717	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1718	{
1719	GCPhysCur = GCPhys \| PAGE_OFFSET_MASK;
1720	break; /* restart */
1721	}
1722
1723	} /* for each page in range */
1724
1725	if (GCPhysCur != 0)
1726	break; /* Yield + ramrange change */
1727	GCPhysCur = pCur->GCPhysLast;
1728	}
1729	} /* for each range */
1730	} while (pCur);
1731
1732	pgmUnlock(pVM);
1733
1734	return VINF_SUCCESS;
1735	}
1736
1737
1738	/**
1739	* Cleans up RAM pages after a live save.
1740	*
1741	* @param pVM Pointer to the VM.
1742	*/
1743	static void pgmR3DoneRamPages(PVM pVM)
1744	{
1745	/*
1746	* Free the tracking arrays and disable write monitoring.
1747	*
1748	* Play nice with the PGM lock in case we're called while the VM is still
1749	* running. This means we have to delay the freeing since we wish to use
1750	* paLSPages as an indicator of which RAM ranges which we need to scan for
1751	* write monitored pages.
1752	*/
1753	void *pvToFree = NULL;
1754	PPGMRAMRANGE pCur;
1755	uint32_t cMonitoredPages = 0;
1756	pgmLock(pVM);
1757	do
1758	{
1759	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1760	{
1761	if (pCur->paLSPages)
1762	{
1763	if (pvToFree)
1764	{
1765	uint32_t idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1766	pgmUnlock(pVM);
1767	MMR3HeapFree(pvToFree);
1768	pvToFree = NULL;
1769	pgmLock(pVM);
1770	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1771	break; /* start over again. */
1772	}
1773
1774	pvToFree = pCur->paLSPages;
1775	pCur->paLSPages = NULL;
1776
1777	uint32_t iPage = pCur->cb >> PAGE_SHIFT;
1778	while (iPage--)
1779	{
1780	PPGMPAGE pPage = &pCur->aPages[iPage];
1781	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pPage);
1782	if (PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_WRITE_MONITORED)
1783	{
1784	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ALLOCATED);
1785	cMonitoredPages++;
1786	}
1787	}
1788	}
1789	}
1790	} while (pCur);
1791
1792	Assert(pVM->pgm.s.cMonitoredPages >= cMonitoredPages);
1793	if (pVM->pgm.s.cMonitoredPages < cMonitoredPages)
1794	pVM->pgm.s.cMonitoredPages = 0;
1795	else
1796	pVM->pgm.s.cMonitoredPages -= cMonitoredPages;
1797
1798	pgmUnlock(pVM);
1799
1800	MMR3HeapFree(pvToFree);
1801	pvToFree = NULL;
1802	}
1803
1804
1805	/**
1806	* Execute a live save pass.
1807	*
1808	* @returns VBox status code.
1809	*
1810	* @param pVM Pointer to the VM.
1811	* @param pSSM The SSM handle.
1812	*/
1813	static DECLCALLBACK(int) pgmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1814	{
1815	int rc;
1816
1817	/*
1818	* Save the MMIO2 and ROM range IDs in pass 0.
1819	*/
1820	if (uPass == 0)
1821	{
1822	rc = pgmR3SaveRamConfig(pVM, pSSM);
1823	if (RT_FAILURE(rc))
1824	return rc;
1825	rc = pgmR3SaveRomRanges(pVM, pSSM);
1826	if (RT_FAILURE(rc))
1827	return rc;
1828	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
1829	if (RT_FAILURE(rc))
1830	return rc;
1831	}
1832	/*
1833	* Reset the page-per-second estimate to avoid inflation by the initial
1834	* load of zero pages. pgmR3LiveVote ASSUMES this is done at pass 7.
1835	*/
1836	else if (uPass == 7)
1837	{
1838	pVM->pgm.s.LiveSave.cSavedPages = 0;
1839	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
1840	}
1841
1842	/*
1843	* Do the scanning.
1844	*/
1845	pgmR3ScanRomPages(pVM);
1846	pgmR3ScanMmio2Pages(pVM, uPass);
1847	pgmR3ScanRamPages(pVM, false /fFinalPass/);
1848	pgmR3PoolClearAll(pVM, true /fFlushRemTlb/); /** @todo this could perhaps be optimized a bit. */
1849
1850	/*
1851	* Save the pages.
1852	*/
1853	if (uPass == 0)
1854	rc = pgmR3SaveRomVirginPages( pVM, pSSM, true /fLiveSave/);
1855	else
1856	rc = VINF_SUCCESS;
1857	if (RT_SUCCESS(rc))
1858	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, true /fLiveSave/, false /fFinalPass/);
1859	if (RT_SUCCESS(rc))
1860	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, uPass);
1861	if (RT_SUCCESS(rc))
1862	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, uPass);
1863	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes care of it.) */
1864
1865	return rc;
1866	}
1867
1868
1869	/**
1870	* Votes on whether the live save phase is done or not.
1871	*
1872	* @returns VBox status code.
1873	*
1874	* @param pVM Pointer to the VM.
1875	* @param pSSM The SSM handle.
1876	* @param uPass The data pass.
1877	*/
1878	static DECLCALLBACK(int) pgmR3LiveVote(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1879	{
1880	/*
1881	* Update and calculate parameters used in the decision making.
1882	*/
1883	const uint32_t cHistoryEntries = RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory);
1884
1885	/* update history. */
1886	pgmLock(pVM);
1887	uint32_t const cWrittenToPages = pVM->pgm.s.cWrittenToPages;
1888	pgmUnlock(pVM);
1889	uint32_t const cDirtyNow = pVM->pgm.s.LiveSave.Rom.cDirtyPages
1890	+ pVM->pgm.s.LiveSave.Mmio2.cDirtyPages
1891	+ pVM->pgm.s.LiveSave.Ram.cDirtyPages
1892	+ cWrittenToPages;
1893	uint32_t i = pVM->pgm.s.LiveSave.iDirtyPagesHistory;
1894	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = cDirtyNow;
1895	pVM->pgm.s.LiveSave.iDirtyPagesHistory = (i + 1) % cHistoryEntries;
1896
1897	/* calc shortterm average (4 passes). */
1898	AssertCompile(RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory) > 4);
1899	uint64_t cTotal = pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1900	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 1) % cHistoryEntries];
1901	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 2) % cHistoryEntries];
1902	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 3) % cHistoryEntries];
1903	uint32_t const cDirtyPagesShort = cTotal / 4;
1904	pVM->pgm.s.LiveSave.cDirtyPagesShort = cDirtyPagesShort;
1905
1906	/* calc longterm average. */
1907	cTotal = 0;
1908	if (uPass < cHistoryEntries)
1909	for (i = 0; i < cHistoryEntries && i <= uPass; i++)
1910	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1911	else
1912	for (i = 0; i < cHistoryEntries; i++)
1913	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1914	uint32_t const cDirtyPagesLong = cTotal / cHistoryEntries;
1915	pVM->pgm.s.LiveSave.cDirtyPagesLong = cDirtyPagesLong;
1916
1917	/* estimate the speed */
1918	uint64_t cNsElapsed = RTTimeNanoTS() - pVM->pgm.s.LiveSave.uSaveStartNS;
1919	uint32_t cPagesPerSecond = (uint32_t)( pVM->pgm.s.LiveSave.cSavedPages
1920	/ ((long double)cNsElapsed / 1000000000.0) );
1921	pVM->pgm.s.LiveSave.cPagesPerSecond = cPagesPerSecond;
1922
1923	/*
1924	* Try make a decision.
1925	*/
1926	if ( cDirtyPagesShort <= cDirtyPagesLong
1927	&& ( cDirtyNow <= cDirtyPagesShort
1928	\|\| cDirtyNow - cDirtyPagesShort < RT_MIN(cDirtyPagesShort / 8, 16)
1929	)
1930	)
1931	{
1932	if (uPass > 10)
1933	{
1934	uint32_t cMsLeftShort = (uint32_t)(cDirtyPagesShort / (long double)cPagesPerSecond * 1000.0);
1935	uint32_t cMsLeftLong = (uint32_t)(cDirtyPagesLong / (long double)cPagesPerSecond * 1000.0);
1936	uint32_t cMsMaxDowntime = SSMR3HandleMaxDowntime(pSSM);
1937	if (cMsMaxDowntime < 32)
1938	cMsMaxDowntime = 32;
1939	if ( ( cMsLeftLong <= cMsMaxDowntime
1940	&& cMsLeftShort < cMsMaxDowntime)
1941	\|\| cMsLeftShort < cMsMaxDowntime / 2
1942	)
1943	{
1944	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u\|%ums cDirtyPagesLong=%u\|%ums cMsMaxDowntime=%u\n",
1945	uPass, cDirtyPagesShort, cMsLeftShort, cDirtyPagesLong, cMsLeftLong, cMsMaxDowntime));
1946	return VINF_SUCCESS;
1947	}
1948	}
1949	else
1950	{
1951	if ( ( cDirtyPagesShort <= 128
1952	&& cDirtyPagesLong <= 1024)
1953	\|\| cDirtyPagesLong <= 256
1954	)
1955	{
1956	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u cDirtyPagesLong=%u\n", uPass, cDirtyPagesShort, cDirtyPagesLong));
1957	return VINF_SUCCESS;
1958	}
1959	}
1960	}
1961
1962	/*
1963	* Come up with a completion percentage. Currently this is a simple
1964	* dirty page (long term) vs. total pages ratio + some pass trickery.
1965	*/
1966	unsigned uPctDirty = (unsigned)( (long double)cDirtyPagesLong
1967	/ (pVM->pgm.s.cAllPages - pVM->pgm.s.LiveSave.cIgnoredPages - pVM->pgm.s.cZeroPages) );
1968	if (uPctDirty <= 100)
1969	SSMR3HandleReportLivePercent(pSSM, RT_MIN(100 - uPctDirty, uPass * 2));
1970	else
1971	AssertMsgFailed(("uPctDirty=%u cDirtyPagesLong=%#x cAllPages=%#x cIgnoredPages=%#x cZeroPages=%#x\n",
1972	uPctDirty, cDirtyPagesLong, pVM->pgm.s.cAllPages, pVM->pgm.s.LiveSave.cIgnoredPages, pVM->pgm.s.cZeroPages));
1973
1974	return VINF_SSM_VOTE_FOR_ANOTHER_PASS;
1975	}
1976
1977
1978	/**
1979	* Prepare for a live save operation.
1980	*
1981	* This will attempt to allocate and initialize the tracking structures. It
1982	* will also prepare for write monitoring of pages and initialize PGM::LiveSave.
1983	* pgmR3SaveDone will do the cleanups.
1984	*
1985	* @returns VBox status code.
1986	*
1987	* @param pVM Pointer to the VM.
1988	* @param pSSM The SSM handle.
1989	*/
1990	static DECLCALLBACK(int) pgmR3LivePrep(PVM pVM, PSSMHANDLE pSSM)
1991	{
1992	/*
1993	* Indicate that we will be using the write monitoring.
1994	*/
1995	pgmLock(pVM);
1996	/** @todo find a way of mediating this when more users are added. */
1997	if (pVM->pgm.s.fPhysWriteMonitoringEngaged)
1998	{
1999	pgmUnlock(pVM);
2000	AssertLogRelFailedReturn(VERR_PGM_WRITE_MONITOR_ENGAGED);
2001	}
2002	pVM->pgm.s.fPhysWriteMonitoringEngaged = true;
2003	pgmUnlock(pVM);
2004
2005	/*
2006	* Initialize the statistics.
2007	*/
2008	pVM->pgm.s.LiveSave.Rom.cReadyPages = 0;
2009	pVM->pgm.s.LiveSave.Rom.cDirtyPages = 0;
2010	pVM->pgm.s.LiveSave.Mmio2.cReadyPages = 0;
2011	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages = 0;
2012	pVM->pgm.s.LiveSave.Ram.cReadyPages = 0;
2013	pVM->pgm.s.LiveSave.Ram.cDirtyPages = 0;
2014	pVM->pgm.s.LiveSave.cIgnoredPages = 0;
2015	pVM->pgm.s.LiveSave.fActive = true;
2016	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory); i++)
2017	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = UINT32_MAX / 2;
2018	pVM->pgm.s.LiveSave.iDirtyPagesHistory = 0;
2019	pVM->pgm.s.LiveSave.cSavedPages = 0;
2020	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
2021	pVM->pgm.s.LiveSave.cPagesPerSecond = 8192;
2022
2023	/*
2024	* Per page type.
2025	*/
2026	int rc = pgmR3PrepRomPages(pVM);
2027	if (RT_SUCCESS(rc))
2028	rc = pgmR3PrepMmio2Pages(pVM);
2029	if (RT_SUCCESS(rc))
2030	rc = pgmR3PrepRamPages(pVM);
2031
2032	NOREF(pSSM);
2033	return rc;
2034	}
2035
2036
2037	/**
2038	* Execute state save operation.
2039	*
2040	* @returns VBox status code.
2041	* @param pVM Pointer to the VM.
2042	* @param pSSM SSM operation handle.
2043	*/
2044	static DECLCALLBACK(int) pgmR3SaveExec(PVM pVM, PSSMHANDLE pSSM)
2045	{
2046	int rc = VINF_SUCCESS;
2047	PPGM pPGM = &pVM->pgm.s;
2048
2049	/*
2050	* Lock PGM and set the no-more-writes indicator.
2051	*/
2052	pgmLock(pVM);
2053	pVM->pgm.s.fNoMorePhysWrites = true;
2054
2055	/*
2056	* Save basic data (required / unaffected by relocation).
2057	*/
2058	bool const fMappingsFixed = pVM->pgm.s.fMappingsFixed;
2059	pVM->pgm.s.fMappingsFixed \|= pVM->pgm.s.fMappingsFixedRestored;
2060	SSMR3PutStruct(pSSM, pPGM, &s_aPGMFields[0]);
2061	pVM->pgm.s.fMappingsFixed = fMappingsFixed;
2062
2063	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
2064	rc = SSMR3PutStruct(pSSM, &pVM->aCpus[idCpu].pgm.s, &s_aPGMCpuFields[0]);
2065
2066	/*
2067	* Save the (remainder of the) memory.
2068	*/
2069	if (RT_SUCCESS(rc))
2070	{
2071	if (pVM->pgm.s.LiveSave.fActive)
2072	{
2073	pgmR3ScanRomPages(pVM);
2074	pgmR3ScanMmio2Pages(pVM, SSM_PASS_FINAL);
2075	pgmR3ScanRamPages(pVM, true /fFinalPass/);
2076
2077	rc = pgmR3SaveShadowedRomPages( pVM, pSSM, true /fLiveSave/, true /fFinalPass/);
2078	if (RT_SUCCESS(rc))
2079	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2080	if (RT_SUCCESS(rc))
2081	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2082	}
2083	else
2084	{
2085	rc = pgmR3SaveRamConfig(pVM, pSSM);
2086	if (RT_SUCCESS(rc))
2087	rc = pgmR3SaveRomRanges(pVM, pSSM);
2088	if (RT_SUCCESS(rc))
2089	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
2090	if (RT_SUCCESS(rc))
2091	rc = pgmR3SaveRomVirginPages( pVM, pSSM, false /fLiveSave/);
2092	if (RT_SUCCESS(rc))
2093	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, false /fLiveSave/, true /fFinalPass/);
2094	if (RT_SUCCESS(rc))
2095	rc = pgmR3SaveMmio2Pages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2096	if (RT_SUCCESS(rc))
2097	rc = pgmR3SaveRamPages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2098	}
2099	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes of it.) */
2100	}
2101
2102	pgmUnlock(pVM);
2103	return rc;
2104	}
2105
2106
2107	/**
2108	* Cleans up after an save state operation.
2109	*
2110	* @returns VBox status code.
2111	* @param pVM Pointer to the VM.
2112	* @param pSSM SSM operation handle.
2113	*/
2114	static DECLCALLBACK(int) pgmR3SaveDone(PVM pVM, PSSMHANDLE pSSM)
2115	{
2116	/*
2117	* Do per page type cleanups first.
2118	*/
2119	if (pVM->pgm.s.LiveSave.fActive)
2120	{
2121	pgmR3DoneRomPages(pVM);
2122	pgmR3DoneMmio2Pages(pVM);
2123	pgmR3DoneRamPages(pVM);
2124	}
2125
2126	/*
2127	* Clear the live save indicator and disengage write monitoring.
2128	*/
2129	pgmLock(pVM);
2130	pVM->pgm.s.LiveSave.fActive = false;
2131	/** @todo this is blindly assuming that we're the only user of write
2132	* monitoring. Fix this when more users are added. */
2133	pVM->pgm.s.fPhysWriteMonitoringEngaged = false;
2134	pgmUnlock(pVM);
2135
2136	NOREF(pSSM);
2137	return VINF_SUCCESS;
2138	}
2139
2140
2141	/**
2142	* Prepare state load operation.
2143	*
2144	* @returns VBox status code.
2145	* @param pVM Pointer to the VM.
2146	* @param pSSM SSM operation handle.
2147	*/
2148	static DECLCALLBACK(int) pgmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM)
2149	{
2150	/*
2151	* Call the reset function to make sure all the memory is cleared.
2152	*/
2153	PGMR3Reset(pVM);
2154	pVM->pgm.s.LiveSave.fActive = false;
2155	NOREF(pSSM);
2156	return VINF_SUCCESS;
2157	}
2158
2159
2160	/**
2161	* Load an ignored page.
2162	*
2163	* @returns VBox status code.
2164	* @param pSSM The saved state handle.
2165	*/
2166	static int pgmR3LoadPageToDevNullOld(PSSMHANDLE pSSM)
2167	{
2168	uint8_t abPage[PAGE_SIZE];
2169	return SSMR3GetMem(pSSM, &abPage[0], sizeof(abPage));
2170	}
2171
2172
2173	/**
2174	* Loads a page without any bits in the saved state, i.e. making sure it's
2175	* really zero.
2176	*
2177	* @returns VBox status code.
2178	* @param pVM Pointer to the VM.
2179	* @param uType The page type or PGMPAGETYPE_INVALID (old saved
2180	* state).
2181	* @param pPage The guest page tracking structure.
2182	* @param GCPhys The page address.
2183	* @param pRam The ram range (logging).
2184	*/
2185	static int pgmR3LoadPageZeroOld(PVM pVM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2186	{
2187	if ( PGM_PAGE_GET_TYPE(pPage) != uType
2188	&& uType != PGMPAGETYPE_INVALID)
2189	return VERR_SSM_UNEXPECTED_DATA;
2190
2191	/* I think this should be sufficient. */
2192	if ( !PGM_PAGE_IS_ZERO(pPage)
2193	&& !PGM_PAGE_IS_BALLOONED(pPage))
2194	return VERR_SSM_UNEXPECTED_DATA;
2195
2196	NOREF(pVM);
2197	NOREF(GCPhys);
2198	NOREF(pRam);
2199	return VINF_SUCCESS;
2200	}
2201
2202
2203	/**
2204	* Loads a page from the saved state.
2205	*
2206	* @returns VBox status code.
2207	* @param pVM Pointer to the VM.
2208	* @param pSSM The SSM handle.
2209	* @param uType The page type or PGMPAGETYEP_INVALID (old saved
2210	* state).
2211	* @param pPage The guest page tracking structure.
2212	* @param GCPhys The page address.
2213	* @param pRam The ram range (logging).
2214	*/
2215	static int pgmR3LoadPageBitsOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2216	{
2217	/*
2218	* Match up the type, dealing with MMIO2 aliases (dropped).
2219	*/
2220	AssertLogRelMsgReturn( PGM_PAGE_GET_TYPE(pPage) == uType
2221	\|\| uType == PGMPAGETYPE_INVALID
2222	/* kudge for the expanded PXE bios (r67885) - @bugref{5687}: */
2223	\|\| ( uType == PGMPAGETYPE_RAM
2224	&& GCPhys >= 0xed000
2225	&& GCPhys <= 0xeffff
2226	&& PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM)
2227	,
2228	("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc),
2229	VERR_SSM_UNEXPECTED_DATA);
2230
2231	/*
2232	* Load the page.
2233	*/
2234	PGMPAGEMAPLOCK PgMpLck;
2235	void *pvPage;
2236	int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvPage, &PgMpLck);
2237	if (RT_SUCCESS(rc))
2238	{
2239	rc = SSMR3GetMem(pSSM, pvPage, PAGE_SIZE);
2240	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2241	}
2242
2243	return rc;
2244	}
2245
2246
2247	/**
2248	* Loads a page (counter part to pgmR3SavePage).
2249	*
2250	* @returns VBox status code, fully bitched errors.
2251	* @param pVM Pointer to the VM.
2252	* @param pSSM The SSM handle.
2253	* @param uType The page type.
2254	* @param pPage The page.
2255	* @param GCPhys The page address.
2256	* @param pRam The RAM range (for error messages).
2257	*/
2258	static int pgmR3LoadPageOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2259	{
2260	uint8_t uState;
2261	int rc = SSMR3GetU8(pSSM, &uState);
2262	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s rc=%Rrc\n", pPage, GCPhys, pRam->pszDesc, rc), rc);
2263	if (uState == 0 /* zero */)
2264	rc = pgmR3LoadPageZeroOld(pVM, uType, pPage, GCPhys, pRam);
2265	else if (uState == 1)
2266	rc = pgmR3LoadPageBitsOld(pVM, pSSM, uType, pPage, GCPhys, pRam);
2267	else
2268	rc = VERR_PGM_INVALID_SAVED_PAGE_STATE;
2269	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] uState=%d uType=%d GCPhys=%RGp %s rc=%Rrc\n",
2270	pPage, uState, uType, GCPhys, pRam->pszDesc, rc),
2271	rc);
2272	return VINF_SUCCESS;
2273	}
2274
2275
2276	/**
2277	* Loads a shadowed ROM page.
2278	*
2279	* @returns VBox status code, errors are fully bitched.
2280	* @param pVM Pointer to the VM.
2281	* @param pSSM The saved state handle.
2282	* @param pPage The page.
2283	* @param GCPhys The page address.
2284	* @param pRam The RAM range (for error messages).
2285	*/
2286	static int pgmR3LoadShadowedRomPageOld(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2287	{
2288	/*
2289	* Load and set the protection first, then load the two pages, the first
2290	* one is the active the other is the passive.
2291	*/
2292	PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
2293	AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2294
2295	uint8_t uProt;
2296	int rc = SSMR3GetU8(pSSM, &uProt);
2297	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
2298	PGMROMPROT enmProt = (PGMROMPROT)uProt;
2299	AssertLogRelMsgReturn( enmProt >= PGMROMPROT_INVALID
2300	&& enmProt < PGMROMPROT_END,
2301	("enmProt=%d pPage=%R[pgmpage] GCPhys=%#x %s\n", enmProt, pPage, GCPhys, pRam->pszDesc),
2302	VERR_SSM_UNEXPECTED_DATA);
2303
2304	if (pRomPage->enmProt != enmProt)
2305	{
2306	rc = PGMR3PhysRomProtect(pVM, GCPhys, PAGE_SIZE, enmProt);
2307	AssertLogRelRCReturn(rc, rc);
2308	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2309	}
2310
2311	PPGMPAGE pPageActive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Virgin : &pRomPage->Shadow;
2312	PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
2313	uint8_t u8ActiveType = PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM : PGMPAGETYPE_ROM_SHADOW;
2314	uint8_t u8PassiveType= PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM_SHADOW : PGMPAGETYPE_ROM;
2315
2316	/** @todo this isn't entirely correct as long as pgmPhysGCPhys2CCPtrInternal is
2317	* used down the line (will the 2nd page will be written to the first
2318	* one because of a false TLB hit since the TLB is using GCPhys and
2319	* doesn't check the HCPhys of the desired page). */
2320	rc = pgmR3LoadPageOld(pVM, pSSM, u8ActiveType, pPage, GCPhys, pRam);
2321	if (RT_SUCCESS(rc))
2322	{
2323	pPageActive = pPage;
2324	rc = pgmR3LoadPageOld(pVM, pSSM, u8PassiveType, pPagePassive, GCPhys, pRam);
2325	}
2326	return rc;
2327	}
2328
2329	/**
2330	* Ram range flags and bits for older versions of the saved state.
2331	*
2332	* @returns VBox status code.
2333	*
2334	* @param pVM Pointer to the VM.
2335	* @param pSSM The SSM handle.
2336	* @param uVersion The saved state version.
2337	*/
2338	static int pgmR3LoadMemoryOld(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2339	{
2340	PPGM pPGM = &pVM->pgm.s;
2341
2342	/*
2343	* Ram range flags and bits.
2344	*/
2345	uint32_t i = 0;
2346	for (PPGMRAMRANGE pRam = pPGM->pRamRangesXR3; ; pRam = pRam->pNextR3, i++)
2347	{
2348	/* Check the sequence number / separator. */
2349	uint32_t u32Sep;
2350	int rc = SSMR3GetU32(pSSM, &u32Sep);
2351	if (RT_FAILURE(rc))
2352	return rc;
2353	if (u32Sep == ~0U)
2354	break;
2355	if (u32Sep != i)
2356	{
2357	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2358	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2359	}
2360	AssertLogRelReturn(pRam, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2361
2362	/* Get the range details. */
2363	RTGCPHYS GCPhys;
2364	SSMR3GetGCPhys(pSSM, &GCPhys);
2365	RTGCPHYS GCPhysLast;
2366	SSMR3GetGCPhys(pSSM, &GCPhysLast);
2367	RTGCPHYS cb;
2368	SSMR3GetGCPhys(pSSM, &cb);
2369	uint8_t fHaveBits;
2370	rc = SSMR3GetU8(pSSM, &fHaveBits);
2371	if (RT_FAILURE(rc))
2372	return rc;
2373	if (fHaveBits & ~1)
2374	{
2375	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2376	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2377	}
2378	size_t cchDesc = 0;
2379	char szDesc[256];
2380	szDesc[0] = '\0';
2381	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2382	{
2383	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2384	if (RT_FAILURE(rc))
2385	return rc;
2386	/* Since we've modified the description strings in r45878, only compare
2387	them if the saved state is more recent. */
2388	if (uVersion != PGM_SAVED_STATE_VERSION_RR_DESC)
2389	cchDesc = strlen(szDesc);
2390	}
2391
2392	/*
2393	* Match it up with the current range.
2394	*
2395	* Note there is a hack for dealing with the high BIOS mapping
2396	* in the old saved state format, this means we might not have
2397	* a 1:1 match on success.
2398	*/
2399	if ( ( GCPhys != pRam->GCPhys
2400	\|\| GCPhysLast != pRam->GCPhysLast
2401	\|\| cb != pRam->cb
2402	\|\| ( cchDesc
2403	&& strcmp(szDesc, pRam->pszDesc)) )
2404	/* Hack for PDMDevHlpPhysReserve(pDevIns, 0xfff80000, 0x80000, "High ROM Region"); */
2405	&& ( uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE
2406	\|\| GCPhys != UINT32_C(0xfff80000)
2407	\|\| GCPhysLast != UINT32_C(0xffffffff)
2408	\|\| pRam->GCPhysLast != GCPhysLast
2409	\|\| pRam->GCPhys < GCPhys
2410	\|\| !fHaveBits)
2411	)
2412	{
2413	LogRel(("Ram range: %RGp-%RGp %RGp bytes %s %s\n"
2414	"State : %RGp-%RGp %RGp bytes %s %s\n",
2415	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc,
2416	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc));
2417	/*
2418	* If we're loading a state for debugging purpose, don't make a fuss if
2419	* the MMIO and ROM stuff isn't 100% right, just skip the mismatches.
2420	*/
2421	if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
2422	\|\| GCPhys < 8 * _1M)
2423	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2424	N_("RAM range mismatch; saved={%RGp-%RGp %RGp bytes %s %s} config={%RGp-%RGp %RGp bytes %s %s}"),
2425	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc,
2426	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc);
2427
2428	AssertMsgFailed(("debug skipping not implemented, sorry\n"));
2429	continue;
2430	}
2431
2432	uint32_t cPages = (GCPhysLast - GCPhys + 1) >> PAGE_SHIFT;
2433	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2434	{
2435	/*
2436	* Load the pages one by one.
2437	*/
2438	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2439	{
2440	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2441	PPGMPAGE pPage = &pRam->aPages[iPage];
2442	uint8_t uType;
2443	rc = SSMR3GetU8(pSSM, &uType);
2444	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] iPage=%#x GCPhysPage=%#x %s\n", pPage, iPage, GCPhysPage, pRam->pszDesc), rc);
2445	if (uType == PGMPAGETYPE_ROM_SHADOW)
2446	rc = pgmR3LoadShadowedRomPageOld(pVM, pSSM, pPage, GCPhysPage, pRam);
2447	else
2448	rc = pgmR3LoadPageOld(pVM, pSSM, uType, pPage, GCPhysPage, pRam);
2449	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2450	}
2451	}
2452	else
2453	{
2454	/*
2455	* Old format.
2456	*/
2457
2458	/* Of the page flags, pick up MMIO2 and ROM/RESERVED for the !fHaveBits case.
2459	The rest is generally irrelevant and wrong since the stuff have to match registrations. */
2460	uint32_t fFlags = 0;
2461	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2462	{
2463	uint16_t u16Flags;
2464	rc = SSMR3GetU16(pSSM, &u16Flags);
2465	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2466	fFlags \|= u16Flags;
2467	}
2468
2469	/* Load the bits */
2470	if ( !fHaveBits
2471	&& GCPhysLast < UINT32_C(0xe0000000))
2472	{
2473	/*
2474	* Dynamic chunks.
2475	*/
2476	const uint32_t cPagesInChunk = (110241024) >> PAGE_SHIFT;
2477	AssertLogRelMsgReturn(cPages % cPagesInChunk == 0,
2478	("cPages=%#x cPagesInChunk=%#x\n", cPages, cPagesInChunk, pRam->GCPhys, pRam->pszDesc),
2479	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2480
2481	for (uint32_t iPage = 0; iPage < cPages; /* incremented by inner loop */ )
2482	{
2483	uint8_t fPresent;
2484	rc = SSMR3GetU8(pSSM, &fPresent);
2485	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2486	AssertLogRelMsgReturn(fPresent == (uint8_t)true \|\| fPresent == (uint8_t)false,
2487	("fPresent=%#x iPage=%#x GCPhys=%#x %s\n", fPresent, iPage, pRam->GCPhys, pRam->pszDesc),
2488	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2489
2490	for (uint32_t iChunkPage = 0; iChunkPage < cPagesInChunk; iChunkPage++, iPage++)
2491	{
2492	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2493	PPGMPAGE pPage = &pRam->aPages[iPage];
2494	if (fPresent)
2495	{
2496	if (PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_MMIO)
2497	rc = pgmR3LoadPageToDevNullOld(pSSM);
2498	else
2499	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2500	}
2501	else
2502	rc = pgmR3LoadPageZeroOld(pVM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2503	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2504	}
2505	}
2506	}
2507	else if (pRam->pvR3)
2508	{
2509	/*
2510	* MMIO2.
2511	*/
2512	AssertLogRelMsgReturn((fFlags & 0x0f) == RT_BIT(3) /MM_RAM_FLAGS_MMIO2/,
2513	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2514	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2515	AssertLogRelMsgReturn(pRam->pvR3,
2516	("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc),
2517	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2518
2519	rc = SSMR3GetMem(pSSM, pRam->pvR3, pRam->cb);
2520	AssertLogRelMsgRCReturn(rc, ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc), rc);
2521	}
2522	else if (GCPhysLast < UINT32_C(0xfff80000))
2523	{
2524	/*
2525	* PCI MMIO, no pages saved.
2526	*/
2527	}
2528	else
2529	{
2530	/*
2531	* Load the 0xfff80000..0xffffffff BIOS range.
2532	* It starts with X reserved pages that we have to skip over since
2533	* the RAMRANGE create by the new code won't include those.
2534	*/
2535	AssertLogRelMsgReturn( !(fFlags & RT_BIT(3) /MM_RAM_FLAGS_MMIO2/)
2536	&& (fFlags & RT_BIT(0) /MM_RAM_FLAGS_RESERVED/),
2537	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2538	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2539	AssertLogRelMsgReturn(GCPhys == UINT32_C(0xfff80000),
2540	("GCPhys=%RGp pRamRange{GCPhys=%#x %s}\n", GCPhys, pRam->GCPhys, pRam->pszDesc),
2541	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2542
2543	/* Skip wasted reserved pages before the ROM. */
2544	while (GCPhys < pRam->GCPhys)
2545	{
2546	rc = pgmR3LoadPageToDevNullOld(pSSM);
2547	GCPhys += PAGE_SIZE;
2548	}
2549
2550	/* Load the bios pages. */
2551	cPages = pRam->cb >> PAGE_SHIFT;
2552	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2553	{
2554	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2555	PPGMPAGE pPage = &pRam->aPages[iPage];
2556
2557	AssertLogRelMsgReturn(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM,
2558	("GCPhys=%RGp pPage=%R[pgmpage]\n", GCPhys, GCPhys),
2559	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2560	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_ROM, pPage, GCPhysPage, pRam);
2561	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2562	}
2563	}
2564	}
2565	}
2566
2567	return VINF_SUCCESS;
2568	}
2569
2570
2571	/**
2572	* Worker for pgmR3Load and pgmR3LoadLocked.
2573	*
2574	* @returns VBox status code.
2575	*
2576	* @param pVM Pointer to the VM.
2577	* @param pSSM The SSM handle.
2578	* @param uVersion The PGM saved state unit version.
2579	* @param uPass The pass number.
2580	*
2581	* @todo This needs splitting up if more record types or code twists are
2582	* added...
2583	*/
2584	static int pgmR3LoadMemory(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2585	{
2586	NOREF(uPass);
2587
2588	/*
2589	* Process page records until we hit the terminator.
2590	*/
2591	RTGCPHYS GCPhys = NIL_RTGCPHYS;
2592	PPGMRAMRANGE pRamHint = NULL;
2593	uint8_t id = UINT8_MAX;
2594	uint32_t iPage = UINT32_MAX - 10;
2595	PPGMROMRANGE pRom = NULL;
2596	PPGMMMIO2RANGE pMmio2 = NULL;
2597
2598	/*
2599	* We batch up pages that should be freed instead of calling GMM for
2600	* each and every one of them. Note that we'll lose the pages in most
2601	* failure paths - this should probably be addressed one day.
2602	*/
2603	uint32_t cPendingPages = 0;
2604	PGMMFREEPAGESREQ pReq;
2605	int rc = GMMR3FreePagesPrepare(pVM, &pReq, 128 /* batch size */, GMMACCOUNT_BASE);
2606	AssertLogRelRCReturn(rc, rc);
2607
2608	for (;;)
2609	{
2610	/*
2611	* Get the record type and flags.
2612	*/
2613	uint8_t u8;
2614	rc = SSMR3GetU8(pSSM, &u8);
2615	if (RT_FAILURE(rc))
2616	return rc;
2617	if (u8 == PGM_STATE_REC_END)
2618	{
2619	/*
2620	* Finish off any pages pending freeing.
2621	*/
2622	if (cPendingPages)
2623	{
2624	Log(("pgmR3LoadMemory: GMMR3FreePagesPerform pVM=%p cPendingPages=%u\n", pVM, cPendingPages));
2625	rc = GMMR3FreePagesPerform(pVM, pReq, cPendingPages);
2626	AssertLogRelRCReturn(rc, rc);
2627	}
2628	GMMR3FreePagesCleanup(pReq);
2629	return VINF_SUCCESS;
2630	}
2631	AssertLogRelMsgReturn((u8 & ~PGM_STATE_REC_FLAG_ADDR) <= PGM_STATE_REC_LAST, ("%#x\n", u8), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2632	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2633	{
2634	/*
2635	* RAM page.
2636	*/
2637	case PGM_STATE_REC_RAM_ZERO:
2638	case PGM_STATE_REC_RAM_RAW:
2639	case PGM_STATE_REC_RAM_BALLOONED:
2640	{
2641	/*
2642	* Get the address and resolve it into a page descriptor.
2643	*/
2644	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2645	GCPhys += PAGE_SIZE;
2646	else
2647	{
2648	rc = SSMR3GetGCPhys(pSSM, &GCPhys);
2649	if (RT_FAILURE(rc))
2650	return rc;
2651	}
2652	AssertLogRelMsgReturn(!(GCPhys & PAGE_OFFSET_MASK), ("%RGp\n", GCPhys), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2653
2654	PPGMPAGE pPage;
2655	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
2656	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2657
2658	/*
2659	* Take action according to the record type.
2660	*/
2661	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2662	{
2663	case PGM_STATE_REC_RAM_ZERO:
2664	{
2665	if (PGM_PAGE_IS_ZERO(pPage))
2666	break;
2667
2668	/* Ballooned pages must be unmarked (live snapshot and
2669	teleportation scenarios). */
2670	if (PGM_PAGE_IS_BALLOONED(pPage))
2671	{
2672	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2673	if (uVersion == PGM_SAVED_STATE_VERSION_BALLOON_BROKEN)
2674	break;
2675	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ZERO);
2676	break;
2677	}
2678
2679	AssertLogRelMsgReturn(PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_ALLOCATED, ("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_UNEXPECTED_PAGE_STATE);
2680
2681	/* If this is a ROM page, we must clear it and not try to
2682	* free it. Ditto if the VM is using RamPreAlloc (see
2683	* @bugref{6318}). */
2684	if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM
2685	\|\| PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM_SHADOW
2686	\|\| pVM->pgm.s.fRamPreAlloc)
2687	{
2688	PGMPAGEMAPLOCK PgMpLck;
2689	void *pvDstPage;
2690	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2691	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2692
2693	ASMMemZeroPage(pvDstPage);
2694	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2695	}
2696	/* Free it only if it's not part of a previously
2697	allocated large page (no need to clear the page). */
2698	else if ( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2699	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED)
2700	{
2701	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys);
2702	AssertRCReturn(rc, rc);
2703	}
2704	/** @todo handle large pages (see @bugref{5545}) */
2705	break;
2706	}
2707
2708	case PGM_STATE_REC_RAM_BALLOONED:
2709	{
2710	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2711	if (PGM_PAGE_IS_BALLOONED(pPage))
2712	break;
2713
2714	/* We don't map ballooned pages in our shadow page tables, let's
2715	just free it if allocated and mark as ballooned. See @bugref{5515}. */
2716	if (PGM_PAGE_IS_ALLOCATED(pPage))
2717	{
2718	/** @todo handle large pages + ballooning when it works. (see @bugref{5515},
2719	* @bugref{5545}). */
2720	AssertLogRelMsgReturn( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2721	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED,
2722	("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_LOAD_UNEXPECTED_PAGE_TYPE);
2723
2724	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys);
2725	AssertRCReturn(rc, rc);
2726	}
2727	Assert(PGM_PAGE_IS_ZERO(pPage));
2728	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_BALLOONED);
2729	break;
2730	}
2731
2732	case PGM_STATE_REC_RAM_RAW:
2733	{
2734	PGMPAGEMAPLOCK PgMpLck;
2735	void *pvDstPage;
2736	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2737	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2738	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2739	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2740	if (RT_FAILURE(rc))
2741	return rc;
2742	break;
2743	}
2744
2745	default:
2746	AssertMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2747	}
2748	id = UINT8_MAX;
2749	break;
2750	}
2751
2752	/*
2753	* MMIO2 page.
2754	*/
2755	case PGM_STATE_REC_MMIO2_RAW:
2756	case PGM_STATE_REC_MMIO2_ZERO:
2757	{
2758	/*
2759	* Get the ID + page number and resolved that into a MMIO2 page.
2760	*/
2761	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2762	iPage++;
2763	else
2764	{
2765	SSMR3GetU8(pSSM, &id);
2766	rc = SSMR3GetU32(pSSM, &iPage);
2767	if (RT_FAILURE(rc))
2768	return rc;
2769	}
2770	if ( !pMmio2
2771	\|\| pMmio2->idSavedState != id)
2772	{
2773	for (pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
2774	if (pMmio2->idSavedState == id)
2775	break;
2776	AssertLogRelMsgReturn(pMmio2, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_MMIO2_RANGE_NOT_FOUND);
2777	}
2778	AssertLogRelMsgReturn(iPage < (pMmio2->RamRange.cb >> PAGE_SHIFT), ("iPage=%#x cb=%RGp %s\n", iPage, pMmio2->RamRange.cb, pMmio2->RamRange.pszDesc), VERR_PGM_SAVED_MMIO2_PAGE_NOT_FOUND);
2779	void pvDstPage = (uint8_t )pMmio2->RamRange.pvR3 + ((size_t)iPage << PAGE_SHIFT);
2780
2781	/*
2782	* Load the page bits.
2783	*/
2784	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_MMIO2_ZERO)
2785	ASMMemZeroPage(pvDstPage);
2786	else
2787	{
2788	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2789	if (RT_FAILURE(rc))
2790	return rc;
2791	}
2792	GCPhys = NIL_RTGCPHYS;
2793	break;
2794	}
2795
2796	/*
2797	* ROM pages.
2798	*/
2799	case PGM_STATE_REC_ROM_VIRGIN:
2800	case PGM_STATE_REC_ROM_SHW_RAW:
2801	case PGM_STATE_REC_ROM_SHW_ZERO:
2802	case PGM_STATE_REC_ROM_PROT:
2803	{
2804	/*
2805	* Get the ID + page number and resolved that into a ROM page descriptor.
2806	*/
2807	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2808	iPage++;
2809	else
2810	{
2811	SSMR3GetU8(pSSM, &id);
2812	rc = SSMR3GetU32(pSSM, &iPage);
2813	if (RT_FAILURE(rc))
2814	return rc;
2815	}
2816	if ( !pRom
2817	\|\| pRom->idSavedState != id)
2818	{
2819	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
2820	if (pRom->idSavedState == id)
2821	break;
2822	AssertLogRelMsgReturn(pRom, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_ROM_RANGE_NOT_FOUND);
2823	}
2824	AssertLogRelMsgReturn(iPage < (pRom->cb >> PAGE_SHIFT), ("iPage=%#x cb=%RGp %s\n", iPage, pRom->cb, pRom->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2825	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
2826	GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
2827
2828	/*
2829	* Get and set the protection.
2830	*/
2831	uint8_t u8Prot;
2832	rc = SSMR3GetU8(pSSM, &u8Prot);
2833	if (RT_FAILURE(rc))
2834	return rc;
2835	PGMROMPROT enmProt = (PGMROMPROT)u8Prot;
2836	AssertLogRelMsgReturn(enmProt > PGMROMPROT_INVALID && enmProt < PGMROMPROT_END, ("GCPhys=%RGp enmProt=%d\n", GCPhys, enmProt), VERR_PGM_SAVED_ROM_PAGE_PROT);
2837
2838	if (enmProt != pRomPage->enmProt)
2839	{
2840	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2841	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2842	N_("Protection change of unshadowed ROM page: GCPhys=%RGp enmProt=%d %s"),
2843	GCPhys, enmProt, pRom->pszDesc);
2844	rc = PGMR3PhysRomProtect(pVM, GCPhys, PAGE_SIZE, enmProt);
2845	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2846	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2847	}
2848	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_ROM_PROT)
2849	break; /* done */
2850
2851	/*
2852	* Get the right page descriptor.
2853	*/
2854	PPGMPAGE pRealPage;
2855	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2856	{
2857	case PGM_STATE_REC_ROM_VIRGIN:
2858	if (!PGMROMPROT_IS_ROM(enmProt))
2859	pRealPage = &pRomPage->Virgin;
2860	else
2861	pRealPage = NULL;
2862	break;
2863
2864	case PGM_STATE_REC_ROM_SHW_RAW:
2865	case PGM_STATE_REC_ROM_SHW_ZERO:
2866	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2867	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2868	N_("Shadowed / non-shadowed page type mismatch: GCPhys=%RGp enmProt=%d %s"),
2869	GCPhys, enmProt, pRom->pszDesc);
2870	if (PGMROMPROT_IS_ROM(enmProt))
2871	pRealPage = &pRomPage->Shadow;
2872	else
2873	pRealPage = NULL;
2874	break;
2875
2876	default: AssertLogRelFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE); /* shut up gcc */
2877	}
2878	if (!pRealPage)
2879	{
2880	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pRealPage, &pRamHint);
2881	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2882	}
2883
2884	/*
2885	* Make it writable and map it (if necessary).
2886	*/
2887	void *pvDstPage = NULL;
2888	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2889	{
2890	case PGM_STATE_REC_ROM_SHW_ZERO:
2891	if ( PGM_PAGE_IS_ZERO(pRealPage)
2892	\|\| PGM_PAGE_IS_BALLOONED(pRealPage))
2893	break;
2894	/** @todo implement zero page replacing. */
2895	/* fall thru */
2896	case PGM_STATE_REC_ROM_VIRGIN:
2897	case PGM_STATE_REC_ROM_SHW_RAW:
2898	{
2899	rc = pgmPhysPageMakeWritableAndMap(pVM, pRealPage, GCPhys, &pvDstPage);
2900	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2901	break;
2902	}
2903	}
2904
2905	/*
2906	* Load the bits.
2907	*/
2908	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2909	{
2910	case PGM_STATE_REC_ROM_SHW_ZERO:
2911	if (pvDstPage)
2912	ASMMemZeroPage(pvDstPage);
2913	break;
2914
2915	case PGM_STATE_REC_ROM_VIRGIN:
2916	case PGM_STATE_REC_ROM_SHW_RAW:
2917	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2918	if (RT_FAILURE(rc))
2919	return rc;
2920	break;
2921	}
2922	GCPhys = NIL_RTGCPHYS;
2923	break;
2924	}
2925
2926	/*
2927	* Unknown type.
2928	*/
2929	default:
2930	AssertLogRelMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2931	}
2932	} /* forever */
2933	}
2934
2935
2936	/**
2937	* Worker for pgmR3Load.
2938	*
2939	* @returns VBox status code.
2940	*
2941	* @param pVM Pointer to the VM.
2942	* @param pSSM The SSM handle.
2943	* @param uVersion The saved state version.
2944	*/
2945	static int pgmR3LoadFinalLocked(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2946	{
2947	PPGM pPGM = &pVM->pgm.s;
2948	int rc;
2949	uint32_t u32Sep;
2950
2951	/*
2952	* Load basic data (required / unaffected by relocation).
2953	*/
2954	if (uVersion >= PGM_SAVED_STATE_VERSION_3_0_0)
2955	{
2956	if (uVersion > PGM_SAVED_STATE_VERSION_PRE_BALLOON)
2957	rc = SSMR3GetStruct(pSSM, pPGM, &s_aPGMFields[0]);
2958	else
2959	rc = SSMR3GetStruct(pSSM, pPGM, &s_aPGMFieldsPreBalloon[0]);
2960
2961	AssertLogRelRCReturn(rc, rc);
2962
2963	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2964	{
2965	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
2966	rc = SSMR3GetStruct(pSSM, &pVM->aCpus[i].pgm.s, &s_aPGMCpuFieldsPrePae[0]);
2967	else
2968	rc = SSMR3GetStruct(pSSM, &pVM->aCpus[i].pgm.s, &s_aPGMCpuFields[0]);
2969	AssertLogRelRCReturn(rc, rc);
2970	}
2971	}
2972	else if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2973	{
2974	AssertRelease(pVM->cCpus == 1);
2975
2976	PGMOLD pgmOld;
2977	rc = SSMR3GetStruct(pSSM, &pgmOld, &s_aPGMFields_Old[0]);
2978	AssertLogRelRCReturn(rc, rc);
2979
2980	pPGM->fMappingsFixed = pgmOld.fMappingsFixed;
2981	pPGM->GCPtrMappingFixed = pgmOld.GCPtrMappingFixed;
2982	pPGM->cbMappingFixed = pgmOld.cbMappingFixed;
2983
2984	pVM->aCpus[0].pgm.s.fA20Enabled = pgmOld.fA20Enabled;
2985	pVM->aCpus[0].pgm.s.GCPhysA20Mask = pgmOld.GCPhysA20Mask;
2986	pVM->aCpus[0].pgm.s.enmGuestMode = pgmOld.enmGuestMode;
2987	}
2988	else
2989	{
2990	AssertRelease(pVM->cCpus == 1);
2991
2992	SSMR3GetBool(pSSM, &pPGM->fMappingsFixed);
2993	SSMR3GetGCPtr(pSSM, &pPGM->GCPtrMappingFixed);
2994	SSMR3GetU32(pSSM, &pPGM->cbMappingFixed);
2995
2996	uint32_t cbRamSizeIgnored;
2997	rc = SSMR3GetU32(pSSM, &cbRamSizeIgnored);
2998	if (RT_FAILURE(rc))
2999	return rc;
3000	SSMR3GetGCPhys(pSSM, &pVM->aCpus[0].pgm.s.GCPhysA20Mask);
3001
3002	uint32_t u32 = 0;
3003	SSMR3GetUInt(pSSM, &u32);
3004	pVM->aCpus[0].pgm.s.fA20Enabled = !!u32;
3005	SSMR3GetUInt(pSSM, &pVM->aCpus[0].pgm.s.fSyncFlags);
3006	RTUINT uGuestMode;
3007	SSMR3GetUInt(pSSM, &uGuestMode);
3008	pVM->aCpus[0].pgm.s.enmGuestMode = (PGMMODE)uGuestMode;
3009
3010	/* check separator. */
3011	SSMR3GetU32(pSSM, &u32Sep);
3012	if (RT_FAILURE(rc))
3013	return rc;
3014	if (u32Sep != (uint32_t)~0)
3015	{
3016	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
3017	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
3018	}
3019	}
3020
3021	/*
3022	* Fix the A20 mask.
3023	*/
3024	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3025	pVM->aCpus[i].pgm.s.GCPhysA20Mask = ~(RTGCPHYS)(!pVM->aCpus[i].pgm.s.fA20Enabled << 20);
3026
3027	/*
3028	* The guest mappings - skipped now, see re-fixation in the caller.
3029	*/
3030	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
3031	{
3032	for (uint32_t i = 0; ; i++)
3033	{
3034	rc = SSMR3GetU32(pSSM, &u32Sep); /* sequence number */
3035	if (RT_FAILURE(rc))
3036	return rc;
3037	if (u32Sep == ~0U)
3038	break;
3039	AssertMsgReturn(u32Sep == i, ("u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
3040
3041	char szDesc[256];
3042	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
3043	if (RT_FAILURE(rc))
3044	return rc;
3045	RTGCPTR GCPtrIgnore;
3046	SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* GCPtr */
3047	rc = SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* cPTs */
3048	if (RT_FAILURE(rc))
3049	return rc;
3050	}
3051	}
3052
3053	/*
3054	* Load the RAM contents.
3055	*/
3056	if (uVersion > PGM_SAVED_STATE_VERSION_3_0_0)
3057	{
3058	if (!pVM->pgm.s.LiveSave.fActive)
3059	{
3060	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3061	{
3062	rc = pgmR3LoadRamConfig(pVM, pSSM);
3063	if (RT_FAILURE(rc))
3064	return rc;
3065	}
3066	rc = pgmR3LoadRomRanges(pVM, pSSM);
3067	if (RT_FAILURE(rc))
3068	return rc;
3069	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3070	if (RT_FAILURE(rc))
3071	return rc;
3072	}
3073
3074	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, SSM_PASS_FINAL);
3075	}
3076	else
3077	rc = pgmR3LoadMemoryOld(pVM, pSSM, uVersion);
3078
3079	/* Refresh balloon accounting. */
3080	if (pVM->pgm.s.cBalloonedPages)
3081	{
3082	Log(("pgmR3LoadFinalLocked: pVM=%p cBalloonedPages=%#x\n", pVM, pVM->pgm.s.cBalloonedPages));
3083	rc = GMMR3BalloonedPages(pVM, GMMBALLOONACTION_INFLATE, pVM->pgm.s.cBalloonedPages);
3084	AssertRCReturn(rc, rc);
3085	}
3086	return rc;
3087	}
3088
3089
3090	/**
3091	* Execute state load operation.
3092	*
3093	* @returns VBox status code.
3094	* @param pVM Pointer to the VM.
3095	* @param pSSM SSM operation handle.
3096	* @param uVersion Data layout version.
3097	* @param uPass The data pass.
3098	*/
3099	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
3100	{
3101	int rc;
3102
3103	/*
3104	* Validate version.
3105	*/
3106	if ( ( uPass != SSM_PASS_FINAL
3107	&& uVersion != PGM_SAVED_STATE_VERSION
3108	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3109	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3110	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3111	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3112	\|\| ( uVersion != PGM_SAVED_STATE_VERSION
3113	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3114	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3115	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3116	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG
3117	&& uVersion != PGM_SAVED_STATE_VERSION_3_0_0
3118	&& uVersion != PGM_SAVED_STATE_VERSION_2_2_2
3119	&& uVersion != PGM_SAVED_STATE_VERSION_RR_DESC
3120	&& uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
3121	)
3122	{
3123	AssertMsgFailed(("pgmR3Load: Invalid version uVersion=%d (current %d)!\n", uVersion, PGM_SAVED_STATE_VERSION));
3124	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3125	}
3126
3127	/*
3128	* Do the loading while owning the lock because a bunch of the functions
3129	* we're using requires this.
3130	*/
3131	if (uPass != SSM_PASS_FINAL)
3132	{
3133	pgmLock(pVM);
3134	if (uPass != 0)
3135	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3136	else
3137	{
3138	pVM->pgm.s.LiveSave.fActive = true;
3139	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3140	rc = pgmR3LoadRamConfig(pVM, pSSM);
3141	else
3142	rc = VINF_SUCCESS;
3143	if (RT_SUCCESS(rc))
3144	rc = pgmR3LoadRomRanges(pVM, pSSM);
3145	if (RT_SUCCESS(rc))
3146	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3147	if (RT_SUCCESS(rc))
3148	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3149	}
3150	pgmUnlock(pVM);
3151	}
3152	else
3153	{
3154	pgmLock(pVM);
3155	rc = pgmR3LoadFinalLocked(pVM, pSSM, uVersion);
3156	pVM->pgm.s.LiveSave.fActive = false;
3157	pgmUnlock(pVM);
3158	if (RT_SUCCESS(rc))
3159	{
3160	/*
3161	* We require a full resync now.
3162	*/
3163	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3164	{
3165	PVMCPU pVCpu = &pVM->aCpus[i];
3166	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3167	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3168	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3169	/** @todo For guest PAE, we might get the wrong
3170	* aGCPhysGstPaePDs values now. We should used the
3171	* saved ones... Postponing this since it nothing new
3172	* and PAE/PDPTR needs some general readjusting, see
3173	* @bugref{5880}. */
3174	}
3175
3176	pgmR3HandlerPhysicalUpdateAll(pVM);
3177
3178	/*
3179	* Change the paging mode and restore PGMCPU::GCPhysCR3.
3180	* (The latter requires the CPUM state to be restored already.)
3181	*/
3182	if (CPUMR3IsStateRestorePending(pVM))
3183	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3184	N_("PGM was unexpectedly restored before CPUM"));
3185
3186	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3187	{
3188	PVMCPU pVCpu = &pVM->aCpus[i];
3189
3190	rc = PGMR3ChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode);
3191	AssertLogRelRCReturn(rc, rc);
3192
3193	/* Update pVM->pgm.s.GCPhysCR3. */
3194	Assert(pVCpu->pgm.s.GCPhysCR3 == NIL_RTGCPHYS \|\| FTMIsDeltaLoadSaveActive(pVM));
3195	RTGCPHYS GCPhysCR3 = CPUMGetGuestCR3(pVCpu);
3196	if ( pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE
3197	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE_NX
3198	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64
3199	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64_NX)
3200	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAE_PAGE_MASK);
3201	else
3202	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAGE_MASK);
3203	pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
3204
3205	/* Update the PSE, NX flags and validity masks. */
3206	pVCpu->pgm.s.fGst32BitPageSizeExtension = CPUMIsGuestPageSizeExtEnabled(pVCpu);
3207	PGMNotifyNxeChanged(pVCpu, CPUMIsGuestNXEnabled(pVCpu));
3208	}
3209
3210	/*
3211	* Try re-fixate the guest mappings.
3212	*/
3213	pVM->pgm.s.fMappingsFixedRestored = false;
3214	if ( pVM->pgm.s.fMappingsFixed
3215	&& pgmMapAreMappingsEnabled(pVM))
3216	{
3217	RTGCPTR GCPtrFixed = pVM->pgm.s.GCPtrMappingFixed;
3218	uint32_t cbFixed = pVM->pgm.s.cbMappingFixed;
3219	pVM->pgm.s.fMappingsFixed = false;
3220
3221	uint32_t cbRequired;
3222	int rc2 = PGMR3MappingsSize(pVM, &cbRequired); AssertRC(rc2);
3223	if ( RT_SUCCESS(rc2)
3224	&& cbRequired > cbFixed)
3225	rc2 = VERR_OUT_OF_RANGE;
3226	if (RT_SUCCESS(rc2))
3227	rc2 = pgmR3MappingsFixInternal(pVM, GCPtrFixed, cbFixed);
3228	if (RT_FAILURE(rc2))
3229	{
3230	LogRel(("PGM: Unable to re-fixate the guest mappings at %RGv-%RGv: rc=%Rrc (cbRequired=%#x)\n",
3231	GCPtrFixed, GCPtrFixed + cbFixed, rc2, cbRequired));
3232	pVM->pgm.s.fMappingsFixed = false;
3233	pVM->pgm.s.fMappingsFixedRestored = true;
3234	pVM->pgm.s.GCPtrMappingFixed = GCPtrFixed;
3235	pVM->pgm.s.cbMappingFixed = cbFixed;
3236	}
3237	}
3238	else
3239	{
3240	/* We used to set fixed + disabled while we only use disabled now,
3241	so wipe the state to avoid any confusion. */
3242	pVM->pgm.s.fMappingsFixed = false;
3243	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
3244	pVM->pgm.s.cbMappingFixed = 0;
3245	}
3246
3247	/*
3248	* If we have floating mappings, do a CR3 sync now to make sure the HMA
3249	* doesn't conflict with guest code / data and thereby cause trouble
3250	* when restoring other components like PATM.
3251	*/
3252	if (pgmMapAreMappingsFloating(pVM))
3253	{
3254	PVMCPU pVCpu = &pVM->aCpus[0];
3255	rc = PGMSyncCR3(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu), true);
3256	if (RT_FAILURE(rc))
3257	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3258	N_("PGMSyncCR3 failed unexpectedly with rc=%Rrc"), rc);
3259
3260	/* Make sure to re-sync before executing code. */
3261	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3262	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3263	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3264	}
3265	}
3266	}
3267
3268	return rc;
3269	}
3270
3271
3272	/**
3273	* Registers the saved state callbacks with SSM.
3274	*
3275	* @returns VBox status code.
3276	* @param pVM Pointer to VM.
3277	* @param cbRam The RAM size.
3278	*/
3279	int pgmR3InitSavedState(PVM pVM, uint64_t cbRam)
3280	{
3281	return SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
3282	pgmR3LivePrep, pgmR3LiveExec, pgmR3LiveVote,
3283	NULL, pgmR3SaveExec, pgmR3SaveDone,
3284	pgmR3LoadPrep, pgmR3Load, NULL);
3285	}
3286

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMSavedState.cpp@ 43858

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