PGMSavedState.cpp@ 94249

Last change on this file since 94249 was 93922, checked in by vboxsync, 3 years ago
VMM: Nested VMX: bugref:10092 EPT VM-exit handling with HM ring-0 code.
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1	/* $Id: PGMSavedState.cpp 93922 2022-02-24 15:14:31Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor, The Saved State Part.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_PGM
23	#define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
24	#include <VBox/vmm/pgm.h>
25	#include <VBox/vmm/stam.h>
26	#include <VBox/vmm/ssm.h>
27	#include <VBox/vmm/pdmdrv.h>
28	#include <VBox/vmm/pdmdev.h>
29	#include "PGMInternal.h"
30	#include <VBox/vmm/vmcc.h>
31	#include "PGMInline.h"
32
33	#include <VBox/param.h>
34	#include <VBox/err.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	/** @name Old Page types used in older saved states.
109	* @{ */
110	/** Old saved state: The usual invalid zero entry. */
111	#define PGMPAGETYPE_OLD_INVALID 0
112	/** Old saved state: RAM page. (RWX) */
113	#define PGMPAGETYPE_OLD_RAM 1
114	/** Old saved state: MMIO2 page. (RWX) */
115	#define PGMPAGETYPE_OLD_MMIO2 1
116	/** Old saved state: MMIO2 page aliased over an MMIO page. (RWX)
117	* See PGMHandlerPhysicalPageAlias(). */
118	#define PGMPAGETYPE_OLD_MMIO2_ALIAS_MMIO 2
119	/** Old saved state: Shadowed ROM. (RWX) */
120	#define PGMPAGETYPE_OLD_ROM_SHADOW 3
121	/** Old saved state: ROM page. (R-X) */
122	#define PGMPAGETYPE_OLD_ROM 4
123	/** Old saved state: MMIO page. (---) */
124	#define PGMPAGETYPE_OLD_MMIO 5
125	/** @} */
126
127
128	/*********************************************************************************************************************************
129	* Structures and Typedefs *
130	*********************************************************************************************************************************/
131	/** For loading old saved states. (pre-smp) */
132	typedef struct
133	{
134	/** If set no conflict checks are required. (boolean) */
135	bool fMappingsFixed;
136	/** Size of fixed mapping */
137	uint32_t cbMappingFixed;
138	/** Base address (GC) of fixed mapping */
139	RTGCPTR GCPtrMappingFixed;
140	/** A20 gate mask.
141	* Our current approach to A20 emulation is to let REM do it and don't bother
142	* anywhere else. The interesting guests will be operating with it enabled anyway.
143	* But should the need arise, we'll subject physical addresses to this mask. */
144	RTGCPHYS GCPhysA20Mask;
145	/** A20 gate state - boolean! */
146	bool fA20Enabled;
147	/** The guest paging mode. */
148	PGMMODE enmGuestMode;
149	} PGMOLD;
150
151
152	/*********************************************************************************************************************************
153	* Global Variables *
154	*********************************************************************************************************************************/
155	/** PGM fields to save/load. */
156
157	static const SSMFIELD s_aPGMFields[] =
158	{
159	SSMFIELD_ENTRY_OLD( fMappingsFixed, sizeof(bool)),
160	SSMFIELD_ENTRY_OLD_GCPTR( GCPtrMappingFixed),
161	SSMFIELD_ENTRY_OLD( cbMappingFixed, sizeof(uint32_t)),
162	SSMFIELD_ENTRY( PGM, cBalloonedPages),
163	SSMFIELD_ENTRY_TERM()
164	};
165
166	static const SSMFIELD s_aPGMFieldsPreBalloon[] =
167	{
168	SSMFIELD_ENTRY_OLD( fMappingsFixed, sizeof(bool)),
169	SSMFIELD_ENTRY_OLD_GCPTR( GCPtrMappingFixed),
170	SSMFIELD_ENTRY_OLD( cbMappingFixed, sizeof(uint32_t)),
171	SSMFIELD_ENTRY_TERM()
172	};
173
174	static const SSMFIELD s_aPGMCpuFields[] =
175	{
176	SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
177	SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
178	SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
179	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[0]),
180	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[1]),
181	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[2]),
182	SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[3]),
183	SSMFIELD_ENTRY_TERM()
184	};
185
186	static const SSMFIELD s_aPGMCpuFieldsPrePae[] =
187	{
188	SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
189	SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
190	SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
191	SSMFIELD_ENTRY_TERM()
192	};
193
194	static const SSMFIELD s_aPGMFields_Old[] =
195	{
196	SSMFIELD_ENTRY( PGMOLD, fMappingsFixed),
197	SSMFIELD_ENTRY_GCPTR( PGMOLD, GCPtrMappingFixed),
198	SSMFIELD_ENTRY( PGMOLD, cbMappingFixed),
199	SSMFIELD_ENTRY( PGMOLD, fA20Enabled),
200	SSMFIELD_ENTRY_GCPHYS( PGMOLD, GCPhysA20Mask),
201	SSMFIELD_ENTRY( PGMOLD, enmGuestMode),
202	SSMFIELD_ENTRY_TERM()
203	};
204
205
206	/**
207	* Find the ROM tracking structure for the given page.
208	*
209	* @returns Pointer to the ROM page structure. NULL if the caller didn't check
210	* that it's a ROM page.
211	* @param pVM The cross context VM structure.
212	* @param GCPhys The address of the ROM page.
213	*/
214	static PPGMROMPAGE pgmR3GetRomPage(PVM pVM, RTGCPHYS GCPhys) /** @todo change this to take a hint. */
215	{
216	for (PPGMROMRANGE pRomRange = pVM->pgm.s.CTX_SUFF(pRomRanges);
217	pRomRange;
218	pRomRange = pRomRange->CTX_SUFF(pNext))
219	{
220	RTGCPHYS off = GCPhys - pRomRange->GCPhys;
221	if (GCPhys - pRomRange->GCPhys < pRomRange->cb)
222	return &pRomRange->aPages[off >> GUEST_PAGE_SHIFT];
223	}
224	return NULL;
225	}
226
227
228	/**
229	* Prepares the ROM pages for a live save.
230	*
231	* @returns VBox status code.
232	* @param pVM The cross context VM structure.
233	*/
234	static int pgmR3PrepRomPages(PVM pVM)
235	{
236	/*
237	* Initialize the live save tracking in the ROM page descriptors.
238	*/
239	PGM_LOCK_VOID(pVM);
240	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
241	{
242	PPGMRAMRANGE pRamHint = NULL;;
243	uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
244
245	for (uint32_t iPage = 0; iPage < cPages; iPage++)
246	{
247	pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)PGMROMPROT_INVALID;
248	pRom->aPages[iPage].LiveSave.fWrittenTo = false;
249	pRom->aPages[iPage].LiveSave.fDirty = true;
250	pRom->aPages[iPage].LiveSave.fDirtiedRecently = true;
251	if (!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED))
252	{
253	if (PGMROMPROT_IS_ROM(pRom->aPages[iPage].enmProt))
254	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
255	else
256	{
257	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
258	PPGMPAGE pPage;
259	int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
260	AssertLogRelMsgRC(rc, ("%Rrc GCPhys=%RGp\n", rc, GCPhys));
261	if (RT_SUCCESS(rc))
262	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(pPage) && !PGM_PAGE_IS_BALLOONED(pPage);
263	else
264	pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
265	}
266	}
267	}
268
269	pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
270	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
271	pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
272	}
273	PGM_UNLOCK(pVM);
274
275	return VINF_SUCCESS;
276	}
277
278
279	/**
280	* Assigns IDs to the ROM ranges and saves them.
281	*
282	* @returns VBox status code.
283	* @param pVM The cross context VM structure.
284	* @param pSSM Saved state handle.
285	*/
286	static int pgmR3SaveRomRanges(PVM pVM, PSSMHANDLE pSSM)
287	{
288	PGM_LOCK_VOID(pVM);
289	uint8_t id = 1;
290	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3, id++)
291	{
292	pRom->idSavedState = id;
293	SSMR3PutU8(pSSM, id);
294	SSMR3PutStrZ(pSSM, ""); /* device name */
295	SSMR3PutU32(pSSM, 0); /* device instance */
296	SSMR3PutU8(pSSM, 0); /* region */
297	SSMR3PutStrZ(pSSM, pRom->pszDesc);
298	SSMR3PutGCPhys(pSSM, pRom->GCPhys);
299	int rc = SSMR3PutGCPhys(pSSM, pRom->cb);
300	if (RT_FAILURE(rc))
301	break;
302	}
303	PGM_UNLOCK(pVM);
304	return SSMR3PutU8(pSSM, UINT8_MAX);
305	}
306
307
308	/**
309	* Loads the ROM range ID assignments.
310	*
311	* @returns VBox status code.
312	*
313	* @param pVM The cross context VM structure.
314	* @param pSSM The saved state handle.
315	*/
316	static int pgmR3LoadRomRanges(PVM pVM, PSSMHANDLE pSSM)
317	{
318	PGM_LOCK_ASSERT_OWNER(pVM);
319
320	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
321	pRom->idSavedState = UINT8_MAX;
322
323	for (;;)
324	{
325	/*
326	* Read the data.
327	*/
328	uint8_t id;
329	int rc = SSMR3GetU8(pSSM, &id);
330	if (RT_FAILURE(rc))
331	return rc;
332	if (id == UINT8_MAX)
333	{
334	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
335	if (pRom->idSavedState != UINT8_MAX)
336	{ /* likely */ }
337	else if (pRom->fFlags & PGMPHYS_ROM_FLAGS_MAYBE_MISSING_FROM_STATE)
338	LogRel(("PGM: The '%s' ROM was not found in the saved state, but it is marked as maybe-missing, so that's probably okay.\n",
339	pRom->pszDesc));
340	else
341	AssertLogRelMsg(pRom->idSavedState != UINT8_MAX,
342	("The '%s' ROM was not found in the saved state. Probably due to some misconfiguration\n",
343	pRom->pszDesc));
344	return VINF_SUCCESS; /* the end */
345	}
346	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
347
348	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
349	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
350	AssertLogRelRCReturn(rc, rc);
351
352	uint32_t uInstance;
353	SSMR3GetU32(pSSM, &uInstance);
354	uint8_t iRegion;
355	SSMR3GetU8(pSSM, &iRegion);
356
357	char szDesc[64];
358	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
359	AssertLogRelRCReturn(rc, rc);
360
361	RTGCPHYS GCPhys;
362	SSMR3GetGCPhys(pSSM, &GCPhys);
363	RTGCPHYS cb;
364	rc = SSMR3GetGCPhys(pSSM, &cb);
365	if (RT_FAILURE(rc))
366	return rc;
367	AssertLogRelMsgReturn(!(GCPhys & GUEST_PAGE_OFFSET_MASK), ("GCPhys=%RGp %s\n", GCPhys, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
368	AssertLogRelMsgReturn(!(cb & GUEST_PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
369
370	/*
371	* Locate a matching ROM range.
372	*/
373	AssertLogRelMsgReturn( uInstance == 0
374	&& iRegion == 0
375	&& szDevName[0] == '\0',
376	("GCPhys=%RGp %s\n", GCPhys, szDesc),
377	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
378	PPGMROMRANGE pRom;
379	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
380	{
381	if ( pRom->idSavedState == UINT8_MAX
382	&& !strcmp(pRom->pszDesc, szDesc))
383	{
384	pRom->idSavedState = id;
385	break;
386	}
387	}
388	if (!pRom)
389	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("ROM at %RGp by the name '%s' was not found"), GCPhys, szDesc);
390	} /* forever */
391	}
392
393
394	/**
395	* Scan ROM pages.
396	*
397	* @param pVM The cross context VM structure.
398	*/
399	static void pgmR3ScanRomPages(PVM pVM)
400	{
401	/*
402	* The shadow ROMs.
403	*/
404	PGM_LOCK_VOID(pVM);
405	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
406	{
407	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
408	{
409	uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
410	for (uint32_t iPage = 0; iPage < cPages; iPage++)
411	{
412	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
413	if (pRomPage->LiveSave.fWrittenTo)
414	{
415	pRomPage->LiveSave.fWrittenTo = false;
416	if (!pRomPage->LiveSave.fDirty)
417	{
418	pRomPage->LiveSave.fDirty = true;
419	pVM->pgm.s.LiveSave.Rom.cReadyPages--;
420	pVM->pgm.s.LiveSave.Rom.cDirtyPages++;
421	}
422	pRomPage->LiveSave.fDirtiedRecently = true;
423	}
424	else
425	pRomPage->LiveSave.fDirtiedRecently = false;
426	}
427	}
428	}
429	PGM_UNLOCK(pVM);
430	}
431
432
433	/**
434	* Takes care of the virgin ROM pages in the first pass.
435	*
436	* This is an attempt at simplifying the handling of ROM pages a little bit.
437	* This ASSUMES that no new ROM ranges will be added and that they won't be
438	* relinked in any way.
439	*
440	* @param pVM The cross context VM structure.
441	* @param pSSM The SSM handle.
442	* @param fLiveSave Whether we're in a live save or not.
443	*/
444	static int pgmR3SaveRomVirginPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave)
445	{
446	PGM_LOCK_VOID(pVM);
447	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
448	{
449	uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
450	for (uint32_t iPage = 0; iPage < cPages; iPage++)
451	{
452	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
453	PGMROMPROT enmProt = pRom->aPages[iPage].enmProt;
454
455	/* Get the virgin page descriptor. */
456	PPGMPAGE pPage;
457	if (PGMROMPROT_IS_ROM(enmProt))
458	pPage = pgmPhysGetPage(pVM, GCPhys);
459	else
460	pPage = &pRom->aPages[iPage].Virgin;
461
462	/* Get the page bits. (Cannot use pgmPhysGCPhys2CCPtrInternalReadOnly here!) */
463	int rc = VINF_SUCCESS;
464	char abPage[GUEST_PAGE_SIZE];
465	if ( !PGM_PAGE_IS_ZERO(pPage)
466	&& !PGM_PAGE_IS_BALLOONED(pPage))
467	{
468	void const *pvPage;
469	rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
470	if (RT_SUCCESS(rc))
471	memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
472	}
473	else
474	RT_ZERO(abPage);
475	PGM_UNLOCK(pVM);
476	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
477
478	/* Save it. */
479	if (iPage > 0)
480	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN);
481	else
482	{
483	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN \| PGM_STATE_REC_FLAG_ADDR);
484	SSMR3PutU8(pSSM, pRom->idSavedState);
485	SSMR3PutU32(pSSM, iPage);
486	}
487	SSMR3PutU8(pSSM, (uint8_t)enmProt);
488	rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
489	if (RT_FAILURE(rc))
490	return rc;
491
492	/* Update state. */
493	PGM_LOCK_VOID(pVM);
494	pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)enmProt;
495	if (fLiveSave)
496	{
497	pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
498	pVM->pgm.s.LiveSave.Rom.cReadyPages++;
499	pVM->pgm.s.LiveSave.cSavedPages++;
500	}
501	}
502	}
503	PGM_UNLOCK(pVM);
504	return VINF_SUCCESS;
505	}
506
507
508	/**
509	* Saves dirty pages in the shadowed ROM ranges.
510	*
511	* Used by pgmR3LiveExecPart2 and pgmR3SaveExecMemory.
512	*
513	* @returns VBox status code.
514	* @param pVM The cross context VM structure.
515	* @param pSSM The SSM handle.
516	* @param fLiveSave Whether it's a live save or not.
517	* @param fFinalPass Whether this is the final pass or not.
518	*/
519	static int pgmR3SaveShadowedRomPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, bool fFinalPass)
520	{
521	/*
522	* The Shadowed ROMs.
523	*
524	* ASSUMES that the ROM ranges are fixed.
525	* ASSUMES that all the ROM ranges are mapped.
526	*/
527	PGM_LOCK_VOID(pVM);
528	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
529	{
530	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
531	{
532	uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
533	uint32_t iPrevPage = cPages;
534	for (uint32_t iPage = 0; iPage < cPages; iPage++)
535	{
536	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
537	if ( !fLiveSave
538	\|\| ( pRomPage->LiveSave.fDirty
539	&& ( ( !pRomPage->LiveSave.fDirtiedRecently
540	&& !pRomPage->LiveSave.fWrittenTo)
541	\|\| fFinalPass
542	)
543	)
544	)
545	{
546	uint8_t abPage[GUEST_PAGE_SIZE];
547	PGMROMPROT enmProt = pRomPage->enmProt;
548	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
549	PPGMPAGE pPage = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : pgmPhysGetPage(pVM, GCPhys);
550	bool fZero = PGM_PAGE_IS_ZERO(pPage) \|\| PGM_PAGE_IS_BALLOONED(pPage); Assert(!PGM_PAGE_IS_BALLOONED(pPage)); /* Shouldn't be ballooned. */
551	int rc = VINF_SUCCESS;
552	if (!fZero)
553	{
554	void const *pvPage;
555	rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
556	if (RT_SUCCESS(rc))
557	memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
558	}
559	if (fLiveSave && RT_SUCCESS(rc))
560	{
561	pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
562	pRomPage->LiveSave.fDirty = false;
563	pVM->pgm.s.LiveSave.Rom.cReadyPages++;
564	pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
565	pVM->pgm.s.LiveSave.cSavedPages++;
566	}
567	PGM_UNLOCK(pVM);
568	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
569
570	if (iPage - 1U == iPrevPage && iPage > 0)
571	SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW));
572	else
573	{
574	SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW) \| PGM_STATE_REC_FLAG_ADDR);
575	SSMR3PutU8(pSSM, pRom->idSavedState);
576	SSMR3PutU32(pSSM, iPage);
577	}
578	rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
579	if (!fZero)
580	rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
581	if (RT_FAILURE(rc))
582	return rc;
583
584	PGM_LOCK_VOID(pVM);
585	iPrevPage = iPage;
586	}
587	/*
588	* In the final pass, make sure the protection is in sync.
589	*/
590	else if ( fFinalPass
591	&& pRomPage->LiveSave.u8Prot != pRomPage->enmProt)
592	{
593	PGMROMPROT enmProt = pRomPage->enmProt;
594	pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
595	PGM_UNLOCK(pVM);
596
597	if (iPage - 1U == iPrevPage && iPage > 0)
598	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT);
599	else
600	{
601	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT \| PGM_STATE_REC_FLAG_ADDR);
602	SSMR3PutU8(pSSM, pRom->idSavedState);
603	SSMR3PutU32(pSSM, iPage);
604	}
605	int rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
606	if (RT_FAILURE(rc))
607	return rc;
608
609	PGM_LOCK_VOID(pVM);
610	iPrevPage = iPage;
611	}
612	}
613	}
614	}
615	PGM_UNLOCK(pVM);
616	return VINF_SUCCESS;
617	}
618
619
620	/**
621	* Cleans up ROM pages after a live save.
622	*
623	* @param pVM The cross context VM structure.
624	*/
625	static void pgmR3DoneRomPages(PVM pVM)
626	{
627	NOREF(pVM);
628	}
629
630
631	/**
632	* Prepares the MMIO2 pages for a live save.
633	*
634	* @returns VBox status code.
635	* @param pVM The cross context VM structure.
636	*/
637	static int pgmR3PrepMmio2Pages(PVM pVM)
638	{
639	/*
640	* Initialize the live save tracking in the MMIO2 ranges.
641	* ASSUME nothing changes here.
642	*/
643	PGM_LOCK_VOID(pVM);
644	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
645	{
646	uint32_t const cPages = pRegMmio->RamRange.cb >> GUEST_PAGE_SHIFT;
647	PGM_UNLOCK(pVM);
648
649	PPGMLIVESAVEMMIO2PAGE paLSPages = (PPGMLIVESAVEMMIO2PAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM,
650	sizeof(PGMLIVESAVEMMIO2PAGE) * cPages);
651	if (!paLSPages)
652	return VERR_NO_MEMORY;
653	for (uint32_t iPage = 0; iPage < cPages; iPage++)
654	{
655	/* Initialize it as a dirty zero page. */
656	paLSPages[iPage].fDirty = true;
657	paLSPages[iPage].cUnchangedScans = 0;
658	paLSPages[iPage].fZero = true;
659	paLSPages[iPage].u32CrcH1 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
660	paLSPages[iPage].u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
661	}
662
663	PGM_LOCK_VOID(pVM);
664	pRegMmio->paLSPages = paLSPages;
665	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages += cPages;
666	}
667	PGM_UNLOCK(pVM);
668	return VINF_SUCCESS;
669	}
670
671
672	/**
673	* Assigns IDs to the MMIO2 ranges and saves them.
674	*
675	* @returns VBox status code.
676	* @param pVM The cross context VM structure.
677	* @param pSSM Saved state handle.
678	*/
679	static int pgmR3SaveMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
680	{
681	PGM_LOCK_VOID(pVM);
682	uint8_t id = 1;
683	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
684	{
685	pRegMmio->idSavedState = id;
686	SSMR3PutU8(pSSM, id);
687	SSMR3PutStrZ(pSSM, pRegMmio->pDevInsR3->pReg->szName);
688	SSMR3PutU32(pSSM, pRegMmio->pDevInsR3->iInstance);
689	SSMR3PutU8(pSSM, pRegMmio->iRegion);
690	SSMR3PutStrZ(pSSM, pRegMmio->RamRange.pszDesc);
691	int rc = SSMR3PutGCPhys(pSSM, pRegMmio->RamRange.cb);
692	if (RT_FAILURE(rc))
693	break;
694	id++;
695	}
696	PGM_UNLOCK(pVM);
697	return SSMR3PutU8(pSSM, UINT8_MAX);
698	}
699
700
701	/**
702	* Loads the MMIO2 range ID assignments.
703	*
704	* @returns VBox status code.
705	*
706	* @param pVM The cross context VM structure.
707	* @param pSSM The saved state handle.
708	*/
709	static int pgmR3LoadMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
710	{
711	PGM_LOCK_ASSERT_OWNER(pVM);
712
713	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
714	pRegMmio->idSavedState = UINT8_MAX;
715
716	for (;;)
717	{
718	/*
719	* Read the data.
720	*/
721	uint8_t id;
722	int rc = SSMR3GetU8(pSSM, &id);
723	if (RT_FAILURE(rc))
724	return rc;
725	if (id == UINT8_MAX)
726	{
727	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
728	AssertLogRelMsg(pRegMmio->idSavedState != UINT8_MAX, ("%s\n", pRegMmio->RamRange.pszDesc));
729	return VINF_SUCCESS; /* the end */
730	}
731	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
732
733	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
734	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
735	AssertLogRelRCReturn(rc, rc);
736
737	uint32_t uInstance;
738	SSMR3GetU32(pSSM, &uInstance);
739	uint8_t iRegion;
740	SSMR3GetU8(pSSM, &iRegion);
741
742	char szDesc[64];
743	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
744	AssertLogRelRCReturn(rc, rc);
745
746	RTGCPHYS cb;
747	rc = SSMR3GetGCPhys(pSSM, &cb);
748	AssertLogRelMsgReturn(!(cb & GUEST_PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
749
750	/*
751	* Locate a matching MMIO2 range.
752	*/
753	PPGMREGMMIO2RANGE pRegMmio;
754	for (pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
755	{
756	if ( pRegMmio->idSavedState == UINT8_MAX
757	&& pRegMmio->iRegion == iRegion
758	&& pRegMmio->pDevInsR3->iInstance == uInstance
759	&& !strcmp(pRegMmio->pDevInsR3->pReg->szName, szDevName))
760	{
761	pRegMmio->idSavedState = id;
762	break;
763	}
764	}
765	if (!pRegMmio)
766	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to locate a MMIO2 range called '%s' owned by %s/%u, region %d"),
767	szDesc, szDevName, uInstance, iRegion);
768
769	/*
770	* Validate the configuration, the size of the MMIO2 region should be
771	* the same.
772	*/
773	if (cb != pRegMmio->RamRange.cb)
774	{
775	LogRel(("PGM: MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp\n",
776	pRegMmio->RamRange.pszDesc, cb, pRegMmio->RamRange.cb));
777	if (cb > pRegMmio->RamRange.cb) /* bad idea? */
778	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp"),
779	pRegMmio->RamRange.pszDesc, cb, pRegMmio->RamRange.cb);
780	}
781	} /* forever */
782	}
783
784
785	/**
786	* Scans one MMIO2 page.
787	*
788	* @returns True if changed, false if unchanged.
789	*
790	* @param pVM The cross context VM structure.
791	* @param pbPage The page bits.
792	* @param pLSPage The live save tracking structure for the page.
793	*
794	*/
795	DECLINLINE(bool) pgmR3ScanMmio2Page(PVM pVM, uint8_t const *pbPage, PPGMLIVESAVEMMIO2PAGE pLSPage)
796	{
797	/*
798	* Special handling of zero pages.
799	*/
800	bool const fZero = pLSPage->fZero;
801	if (fZero)
802	{
803	if (ASMMemIsZero(pbPage, GUEST_PAGE_SIZE))
804	{
805	/* Not modified. */
806	if (pLSPage->fDirty)
807	pLSPage->cUnchangedScans++;
808	return false;
809	}
810
811	pLSPage->fZero = false;
812	pLSPage->u32CrcH1 = RTCrc32(pbPage, GUEST_PAGE_SIZE / 2);
813	}
814	else
815	{
816	/*
817	* CRC the first half, if it doesn't match the page is dirty and
818	* we won't check the 2nd half (we'll do that next time).
819	*/
820	uint32_t u32CrcH1 = RTCrc32(pbPage, GUEST_PAGE_SIZE / 2);
821	if (u32CrcH1 == pLSPage->u32CrcH1)
822	{
823	uint32_t u32CrcH2 = RTCrc32(pbPage + GUEST_PAGE_SIZE / 2, GUEST_PAGE_SIZE / 2);
824	if (u32CrcH2 == pLSPage->u32CrcH2)
825	{
826	/* Probably not modified. */
827	if (pLSPage->fDirty)
828	pLSPage->cUnchangedScans++;
829	return false;
830	}
831
832	pLSPage->u32CrcH2 = u32CrcH2;
833	}
834	else
835	{
836	pLSPage->u32CrcH1 = u32CrcH1;
837	if ( u32CrcH1 == PGM_STATE_CRC32_ZERO_HALF_PAGE
838	&& ASMMemIsZero(pbPage, GUEST_PAGE_SIZE))
839	{
840	pLSPage->u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
841	pLSPage->fZero = true;
842	}
843	}
844	}
845
846	/* dirty page path */
847	pLSPage->cUnchangedScans = 0;
848	if (!pLSPage->fDirty)
849	{
850	pLSPage->fDirty = true;
851	pVM->pgm.s.LiveSave.Mmio2.cReadyPages--;
852	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages++;
853	if (fZero)
854	pVM->pgm.s.LiveSave.Mmio2.cZeroPages--;
855	}
856	return true;
857	}
858
859
860	/**
861	* Scan for MMIO2 page modifications.
862	*
863	* @param pVM The cross context VM structure.
864	* @param uPass The pass number.
865	*/
866	static void pgmR3ScanMmio2Pages(PVM pVM, uint32_t uPass)
867	{
868	/*
869	* Since this is a bit expensive we lower the scan rate after a little while.
870	*/
871	if ( ( (uPass & 3) != 0
872	&& uPass > 10)
873	\|\| uPass == SSM_PASS_FINAL)
874	return;
875
876	PGM_LOCK_VOID(pVM); /* paranoia */
877	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
878	{
879	PPGMLIVESAVEMMIO2PAGE paLSPages = pRegMmio->paLSPages;
880	uint32_t cPages = pRegMmio->RamRange.cb >> GUEST_PAGE_SHIFT;
881	PGM_UNLOCK(pVM);
882
883	for (uint32_t iPage = 0; iPage < cPages; iPage++)
884	{
885	uint8_t const pbPage = (uint8_t const )pRegMmio->pvR3 + iPage * GUEST_PAGE_SIZE;
886	pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]);
887	}
888
889	PGM_LOCK_VOID(pVM);
890	}
891	PGM_UNLOCK(pVM);
892
893	}
894
895
896	/**
897	* Save quiescent MMIO2 pages.
898	*
899	* @returns VBox status code.
900	* @param pVM The cross context VM structure.
901	* @param pSSM The SSM handle.
902	* @param fLiveSave Whether it's a live save or not.
903	* @param uPass The pass number.
904	*/
905	static int pgmR3SaveMmio2Pages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
906	{
907	/** @todo implement live saving of MMIO2 pages. (Need some way of telling the
908	* device that we wish to know about changes.) */
909
910	int rc = VINF_SUCCESS;
911	if (uPass == SSM_PASS_FINAL)
912	{
913	/*
914	* The mop up round.
915	*/
916	PGM_LOCK_VOID(pVM);
917	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3;
918	pRegMmio && RT_SUCCESS(rc);
919	pRegMmio = pRegMmio->pNextR3)
920	{
921	PPGMLIVESAVEMMIO2PAGE paLSPages = pRegMmio->paLSPages;
922	uint8_t const pbPage = (uint8_t const )pRegMmio->RamRange.pvR3;
923	uint32_t cPages = pRegMmio->RamRange.cb >> GUEST_PAGE_SHIFT;
924	uint32_t iPageLast = cPages;
925	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += GUEST_PAGE_SIZE)
926	{
927	uint8_t u8Type;
928	if (!fLiveSave)
929	u8Type = ASMMemIsZero(pbPage, GUEST_PAGE_SIZE) ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
930	else
931	{
932	/* Try figure if it's a clean page, compare the SHA-1 to be really sure. */
933	if ( !paLSPages[iPage].fDirty
934	&& !pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
935	{
936	if (paLSPages[iPage].fZero)
937	continue;
938
939	uint8_t abSha1Hash[RTSHA1_HASH_SIZE];
940	RTSha1(pbPage, GUEST_PAGE_SIZE, abSha1Hash);
941	if (!memcmp(abSha1Hash, paLSPages[iPage].abSha1Saved, sizeof(abSha1Hash)))
942	continue;
943	}
944	u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
945	pVM->pgm.s.LiveSave.cSavedPages++;
946	}
947
948	if (iPage != 0 && iPage == iPageLast + 1)
949	rc = SSMR3PutU8(pSSM, u8Type);
950	else
951	{
952	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
953	SSMR3PutU8(pSSM, pRegMmio->idSavedState);
954	rc = SSMR3PutU32(pSSM, iPage);
955	}
956	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
957	rc = SSMR3PutMem(pSSM, pbPage, GUEST_PAGE_SIZE);
958	if (RT_FAILURE(rc))
959	break;
960	iPageLast = iPage;
961	}
962	}
963	PGM_UNLOCK(pVM);
964	}
965	/*
966	* Reduce the rate after a little while since the current MMIO2 approach is
967	* a bit expensive.
968	* We position it two passes after the scan pass to avoid saving busy pages.
969	*/
970	else if ( uPass <= 10
971	\|\| (uPass & 3) == 2)
972	{
973	PGM_LOCK_VOID(pVM);
974	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3;
975	pRegMmio && RT_SUCCESS(rc);
976	pRegMmio = pRegMmio->pNextR3)
977	{
978	PPGMLIVESAVEMMIO2PAGE paLSPages = pRegMmio->paLSPages;
979	uint8_t const pbPage = (uint8_t const )pRegMmio->RamRange.pvR3;
980	uint32_t cPages = pRegMmio->RamRange.cb >> GUEST_PAGE_SHIFT;
981	uint32_t iPageLast = cPages;
982	PGM_UNLOCK(pVM);
983
984	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += GUEST_PAGE_SIZE)
985	{
986	/* Skip clean pages and pages which hasn't quiesced. */
987	if (!paLSPages[iPage].fDirty)
988	continue;
989	if (paLSPages[iPage].cUnchangedScans < 3)
990	continue;
991	if (pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
992	continue;
993
994	/* Save it. */
995	bool const fZero = paLSPages[iPage].fZero;
996	uint8_t abPage[GUEST_PAGE_SIZE];
997	if (!fZero)
998	{
999	memcpy(abPage, pbPage, GUEST_PAGE_SIZE);
1000	RTSha1(abPage, GUEST_PAGE_SIZE, paLSPages[iPage].abSha1Saved);
1001	}
1002
1003	uint8_t u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
1004	if (iPage != 0 && iPage == iPageLast + 1)
1005	rc = SSMR3PutU8(pSSM, u8Type);
1006	else
1007	{
1008	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
1009	SSMR3PutU8(pSSM, pRegMmio->idSavedState);
1010	rc = SSMR3PutU32(pSSM, iPage);
1011	}
1012	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
1013	rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
1014	if (RT_FAILURE(rc))
1015	break;
1016
1017	/* Housekeeping. */
1018	paLSPages[iPage].fDirty = false;
1019	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages--;
1020	pVM->pgm.s.LiveSave.Mmio2.cReadyPages++;
1021	if (u8Type == PGM_STATE_REC_MMIO2_ZERO)
1022	pVM->pgm.s.LiveSave.Mmio2.cZeroPages++;
1023	pVM->pgm.s.LiveSave.cSavedPages++;
1024	iPageLast = iPage;
1025	}
1026
1027	PGM_LOCK_VOID(pVM);
1028	}
1029	PGM_UNLOCK(pVM);
1030	}
1031
1032	return rc;
1033	}
1034
1035
1036	/**
1037	* Cleans up MMIO2 pages after a live save.
1038	*
1039	* @param pVM The cross context VM structure.
1040	*/
1041	static void pgmR3DoneMmio2Pages(PVM pVM)
1042	{
1043	/*
1044	* Free the tracking structures for the MMIO2 pages.
1045	* We do the freeing outside the lock in case the VM is running.
1046	*/
1047	PGM_LOCK_VOID(pVM);
1048	for (PPGMREGMMIO2RANGE pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
1049	{
1050	void *pvMmio2ToFree = pRegMmio->paLSPages;
1051	if (pvMmio2ToFree)
1052	{
1053	pRegMmio->paLSPages = NULL;
1054	PGM_UNLOCK(pVM);
1055	MMR3HeapFree(pvMmio2ToFree);
1056	PGM_LOCK_VOID(pVM);
1057	}
1058	}
1059	PGM_UNLOCK(pVM);
1060	}
1061
1062
1063	/**
1064	* Prepares the RAM pages for a live save.
1065	*
1066	* @returns VBox status code.
1067	* @param pVM The cross context VM structure.
1068	*/
1069	static int pgmR3PrepRamPages(PVM pVM)
1070	{
1071
1072	/*
1073	* Try allocating tracking structures for the ram ranges.
1074	*
1075	* To avoid lock contention, we leave the lock every time we're allocating
1076	* a new array. This means we'll have to ditch the allocation and start
1077	* all over again if the RAM range list changes in-between.
1078	*
1079	* Note! pgmR3SaveDone will always be called and it is therefore responsible
1080	* for cleaning up.
1081	*/
1082	PPGMRAMRANGE pCur;
1083	PGM_LOCK_VOID(pVM);
1084	do
1085	{
1086	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1087	{
1088	if ( !pCur->paLSPages
1089	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1090	{
1091	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1092	uint32_t const cPages = pCur->cb >> GUEST_PAGE_SHIFT;
1093	PGM_UNLOCK(pVM);
1094	PPGMLIVESAVERAMPAGE paLSPages = (PPGMLIVESAVERAMPAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, cPages * sizeof(PGMLIVESAVERAMPAGE));
1095	if (!paLSPages)
1096	return VERR_NO_MEMORY;
1097	PGM_LOCK_VOID(pVM);
1098	if (pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1099	{
1100	PGM_UNLOCK(pVM);
1101	MMR3HeapFree(paLSPages);
1102	PGM_LOCK_VOID(pVM);
1103	break; /* try again */
1104	}
1105	pCur->paLSPages = paLSPages;
1106
1107	/*
1108	* Initialize the array.
1109	*/
1110	uint32_t iPage = cPages;
1111	while (iPage-- > 0)
1112	{
1113	/** @todo yield critsect! (after moving this away from EMT0) */
1114	PCPGMPAGE pPage = &pCur->aPages[iPage];
1115	paLSPages[iPage].cDirtied = 0;
1116	paLSPages[iPage].fDirty = 1; /* everything is dirty at this time */
1117	paLSPages[iPage].fWriteMonitored = 0;
1118	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1119	paLSPages[iPage].u2Reserved = 0;
1120	switch (PGM_PAGE_GET_TYPE(pPage))
1121	{
1122	case PGMPAGETYPE_RAM:
1123	if ( PGM_PAGE_IS_ZERO(pPage)
1124	\|\| PGM_PAGE_IS_BALLOONED(pPage))
1125	{
1126	paLSPages[iPage].fZero = 1;
1127	paLSPages[iPage].fShared = 0;
1128	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1129	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1130	#endif
1131	}
1132	else if (PGM_PAGE_IS_SHARED(pPage))
1133	{
1134	paLSPages[iPage].fZero = 0;
1135	paLSPages[iPage].fShared = 1;
1136	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1137	paLSPages[iPage].u32Crc = UINT32_MAX;
1138	#endif
1139	}
1140	else
1141	{
1142	paLSPages[iPage].fZero = 0;
1143	paLSPages[iPage].fShared = 0;
1144	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1145	paLSPages[iPage].u32Crc = UINT32_MAX;
1146	#endif
1147	}
1148	paLSPages[iPage].fIgnore = 0;
1149	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1150	break;
1151
1152	case PGMPAGETYPE_ROM_SHADOW:
1153	case PGMPAGETYPE_ROM:
1154	{
1155	paLSPages[iPage].fZero = 0;
1156	paLSPages[iPage].fShared = 0;
1157	paLSPages[iPage].fDirty = 0;
1158	paLSPages[iPage].fIgnore = 1;
1159	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1160	paLSPages[iPage].u32Crc = UINT32_MAX;
1161	#endif
1162	pVM->pgm.s.LiveSave.cIgnoredPages++;
1163	break;
1164	}
1165
1166	default:
1167	AssertMsgFailed(("%R[pgmpage]", pPage));
1168	RT_FALL_THRU();
1169	case PGMPAGETYPE_MMIO2:
1170	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
1171	paLSPages[iPage].fZero = 0;
1172	paLSPages[iPage].fShared = 0;
1173	paLSPages[iPage].fDirty = 0;
1174	paLSPages[iPage].fIgnore = 1;
1175	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1176	paLSPages[iPage].u32Crc = UINT32_MAX;
1177	#endif
1178	pVM->pgm.s.LiveSave.cIgnoredPages++;
1179	break;
1180
1181	case PGMPAGETYPE_MMIO:
1182	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
1183	paLSPages[iPage].fZero = 0;
1184	paLSPages[iPage].fShared = 0;
1185	paLSPages[iPage].fDirty = 0;
1186	paLSPages[iPage].fIgnore = 1;
1187	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1188	paLSPages[iPage].u32Crc = UINT32_MAX;
1189	#endif
1190	pVM->pgm.s.LiveSave.cIgnoredPages++;
1191	break;
1192	}
1193	}
1194	}
1195	}
1196	} while (pCur);
1197	PGM_UNLOCK(pVM);
1198
1199	return VINF_SUCCESS;
1200	}
1201
1202
1203	/**
1204	* Saves the RAM configuration.
1205	*
1206	* @returns VBox status code.
1207	* @param pVM The cross context VM structure.
1208	* @param pSSM The saved state handle.
1209	*/
1210	static int pgmR3SaveRamConfig(PVM pVM, PSSMHANDLE pSSM)
1211	{
1212	uint32_t cbRamHole = 0;
1213	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
1214	AssertRCReturn(rc, rc);
1215
1216	uint64_t cbRam = 0;
1217	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0);
1218	AssertRCReturn(rc, rc);
1219
1220	SSMR3PutU32(pSSM, cbRamHole);
1221	return SSMR3PutU64(pSSM, cbRam);
1222	}
1223
1224
1225	/**
1226	* Loads and verifies the RAM configuration.
1227	*
1228	* @returns VBox status code.
1229	* @param pVM The cross context VM structure.
1230	* @param pSSM The saved state handle.
1231	*/
1232	static int pgmR3LoadRamConfig(PVM pVM, PSSMHANDLE pSSM)
1233	{
1234	uint32_t cbRamHoleCfg = 0;
1235	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHoleCfg, MM_RAM_HOLE_SIZE_DEFAULT);
1236	AssertRCReturn(rc, rc);
1237
1238	uint64_t cbRamCfg = 0;
1239	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRamCfg, 0);
1240	AssertRCReturn(rc, rc);
1241
1242	uint32_t cbRamHoleSaved;
1243	SSMR3GetU32(pSSM, &cbRamHoleSaved);
1244
1245	uint64_t cbRamSaved;
1246	rc = SSMR3GetU64(pSSM, &cbRamSaved);
1247	AssertRCReturn(rc, rc);
1248
1249	if ( cbRamHoleCfg != cbRamHoleSaved
1250	\|\| cbRamCfg != cbRamSaved)
1251	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Ram config mismatch: saved=%RX64/%RX32 config=%RX64/%RX32 (RAM/Hole)"),
1252	cbRamSaved, cbRamHoleSaved, cbRamCfg, cbRamHoleCfg);
1253	return VINF_SUCCESS;
1254	}
1255
1256	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1257
1258	/**
1259	* Calculates the CRC-32 for a RAM page and updates the live save page tracking
1260	* info with it.
1261	*
1262	* @param pVM The cross context VM structure.
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 pgmR3StateCalcCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage)
1269	{
1270	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
1271	PGMPAGEMAPLOCK PgMpLck;
1272	void const *pvPage;
1273	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1274	if (RT_SUCCESS(rc))
1275	{
1276	paLSPages[iPage].u32Crc = RTCrc32(pvPage, GUEST_PAGE_SIZE);
1277	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1278	}
1279	else
1280	paLSPages[iPage].u32Crc = UINT32_MAX; /* Invalid */
1281	}
1282
1283
1284	/**
1285	* Verifies the CRC-32 for a page given it's raw bits.
1286	*
1287	* @param pvPage The page bits.
1288	* @param pCur The current RAM range.
1289	* @param paLSPages The current array of live save page tracking
1290	* structures.
1291	* @param iPage The page index.
1292	*/
1293	static void pgmR3StateVerifyCrc32ForPage(void const pvPage, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char pszWhere)
1294	{
1295	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1296	{
1297	uint32_t u32Crc = RTCrc32(pvPage, GUEST_PAGE_SIZE);
1298	Assert( ( !PGM_PAGE_IS_ZERO(&pCur->aPages[iPage])
1299	&& !PGM_PAGE_IS_BALLOONED(&pCur->aPages[iPage]))
1300	\|\| u32Crc == PGM_STATE_CRC32_ZERO_PAGE);
1301	AssertMsg(paLSPages[iPage].u32Crc == u32Crc,
1302	("%08x != %08x for %RGp %R[pgmpage] %s\n", paLSPages[iPage].u32Crc, u32Crc,
1303	pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage], pszWhere));
1304	}
1305	}
1306
1307
1308	/**
1309	* Verifies the CRC-32 for a RAM page.
1310	*
1311	* @param pVM The cross context VM structure.
1312	* @param pCur The current RAM range.
1313	* @param paLSPages The current array of live save page tracking
1314	* structures.
1315	* @param iPage The page index.
1316	*/
1317	static void pgmR3StateVerifyCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char *pszWhere)
1318	{
1319	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1320	{
1321	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
1322	PGMPAGEMAPLOCK PgMpLck;
1323	void const *pvPage;
1324	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1325	if (RT_SUCCESS(rc))
1326	{
1327	pgmR3StateVerifyCrc32ForPage(pvPage, pCur, paLSPages, iPage, pszWhere);
1328	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1329	}
1330	}
1331	}
1332
1333	#endif /* PGMLIVESAVERAMPAGE_WITH_CRC32 */
1334
1335	/**
1336	* Scan for RAM page modifications and reprotect them.
1337	*
1338	* @param pVM The cross context VM structure.
1339	* @param fFinalPass Whether this is the final pass or not.
1340	*/
1341	static void pgmR3ScanRamPages(PVM pVM, bool fFinalPass)
1342	{
1343	/*
1344	* The RAM.
1345	*/
1346	RTGCPHYS GCPhysCur = 0;
1347	PPGMRAMRANGE pCur;
1348	PGM_LOCK_VOID(pVM);
1349	do
1350	{
1351	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1352	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1353	{
1354	if ( pCur->GCPhysLast > GCPhysCur
1355	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1356	{
1357	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1358	uint32_t cPages = pCur->cb >> GUEST_PAGE_SHIFT;
1359	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> GUEST_PAGE_SHIFT;
1360	GCPhysCur = 0;
1361	for (; iPage < cPages; iPage++)
1362	{
1363	/* Do yield first. */
1364	if ( !fFinalPass
1365	#ifndef PGMLIVESAVERAMPAGE_WITH_CRC32
1366	&& (iPage & 0x7ff) == 0x100
1367	#endif
1368	&& PDMR3CritSectYield(pVM, &pVM->pgm.s.CritSectX)
1369	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1370	{
1371	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
1372	break; /* restart */
1373	}
1374
1375	/* Skip already ignored pages. */
1376	if (paLSPages[iPage].fIgnore)
1377	continue;
1378
1379	if (RT_LIKELY(PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]) == PGMPAGETYPE_RAM))
1380	{
1381	/*
1382	* A RAM page.
1383	*/
1384	switch (PGM_PAGE_GET_STATE(&pCur->aPages[iPage]))
1385	{
1386	case PGM_PAGE_STATE_ALLOCATED:
1387	/** @todo Optimize this: Don't always re-enable write
1388	* monitoring if the page is known to be very busy. */
1389	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1390	{
1391	AssertMsg(paLSPages[iPage].fWriteMonitored,
1392	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage]));
1393	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1394	Assert(pVM->pgm.s.cWrittenToPages > 0);
1395	pVM->pgm.s.cWrittenToPages--;
1396	}
1397	else
1398	{
1399	AssertMsg(!paLSPages[iPage].fWriteMonitored,
1400	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage]));
1401	pVM->pgm.s.LiveSave.Ram.cMonitoredPages++;
1402	}
1403
1404	if (!paLSPages[iPage].fDirty)
1405	{
1406	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1407	if (paLSPages[iPage].fZero)
1408	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1409	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1410	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1411	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1412	}
1413
1414	pgmPhysPageWriteMonitor(pVM, &pCur->aPages[iPage],
1415	pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT));
1416	paLSPages[iPage].fWriteMonitored = 1;
1417	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1418	paLSPages[iPage].fDirty = 1;
1419	paLSPages[iPage].fZero = 0;
1420	paLSPages[iPage].fShared = 0;
1421	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1422	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1423	#endif
1424	break;
1425
1426	case PGM_PAGE_STATE_WRITE_MONITORED:
1427	Assert(paLSPages[iPage].fWriteMonitored);
1428	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) == 0)
1429	{
1430	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1431	if (paLSPages[iPage].fWriteMonitoredJustNow)
1432	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1433	else
1434	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "scan");
1435	#endif
1436	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1437	}
1438	else
1439	{
1440	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1441	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1442	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1443	#endif
1444	if (!paLSPages[iPage].fDirty)
1445	{
1446	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1447	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1448	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1449	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1450	}
1451	}
1452	break;
1453
1454	case PGM_PAGE_STATE_ZERO:
1455	case PGM_PAGE_STATE_BALLOONED:
1456	if (!paLSPages[iPage].fZero)
1457	{
1458	if (!paLSPages[iPage].fDirty)
1459	{
1460	paLSPages[iPage].fDirty = 1;
1461	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1462	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1463	}
1464	paLSPages[iPage].fZero = 1;
1465	paLSPages[iPage].fShared = 0;
1466	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1467	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1468	#endif
1469	}
1470	break;
1471
1472	case PGM_PAGE_STATE_SHARED:
1473	if (!paLSPages[iPage].fShared)
1474	{
1475	if (!paLSPages[iPage].fDirty)
1476	{
1477	paLSPages[iPage].fDirty = 1;
1478	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1479	if (paLSPages[iPage].fZero)
1480	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1481	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1482	}
1483	paLSPages[iPage].fZero = 0;
1484	paLSPages[iPage].fShared = 1;
1485	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1486	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1487	#endif
1488	}
1489	break;
1490	}
1491	}
1492	else
1493	{
1494	/*
1495	* All other types => Ignore the page.
1496	*/
1497	Assert(!paLSPages[iPage].fIgnore); /* skipped before switch */
1498	paLSPages[iPage].fIgnore = 1;
1499	if (paLSPages[iPage].fWriteMonitored)
1500	{
1501	/** @todo this doesn't hold water when we start monitoring MMIO2 and ROM shadow
1502	* pages! */
1503	if (RT_UNLIKELY(PGM_PAGE_GET_STATE(&pCur->aPages[iPage]) == PGM_PAGE_STATE_WRITE_MONITORED))
1504	{
1505	AssertMsgFailed(("%R[pgmpage]", &pCur->aPages[iPage])); /* shouldn't happen. */
1506	PGM_PAGE_SET_STATE(pVM, &pCur->aPages[iPage], PGM_PAGE_STATE_ALLOCATED);
1507	Assert(pVM->pgm.s.cMonitoredPages > 0);
1508	pVM->pgm.s.cMonitoredPages--;
1509	}
1510	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1511	{
1512	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1513	Assert(pVM->pgm.s.cWrittenToPages > 0);
1514	pVM->pgm.s.cWrittenToPages--;
1515	}
1516	pVM->pgm.s.LiveSave.Ram.cMonitoredPages--;
1517	}
1518
1519	/** @todo the counting doesn't quite work out here. fix later? */
1520	if (paLSPages[iPage].fDirty)
1521	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1522	else
1523	{
1524	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1525	if (paLSPages[iPage].fZero)
1526	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1527	}
1528	pVM->pgm.s.LiveSave.cIgnoredPages++;
1529	}
1530	} /* for each page in range */
1531
1532	if (GCPhysCur != 0)
1533	break; /* Yield + ramrange change */
1534	GCPhysCur = pCur->GCPhysLast;
1535	}
1536	} /* for each range */
1537	} while (pCur);
1538	PGM_UNLOCK(pVM);
1539	}
1540
1541
1542	/**
1543	* Save quiescent RAM pages.
1544	*
1545	* @returns VBox status code.
1546	* @param pVM The cross context VM structure.
1547	* @param pSSM The SSM handle.
1548	* @param fLiveSave Whether it's a live save or not.
1549	* @param uPass The pass number.
1550	*/
1551	static int pgmR3SaveRamPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
1552	{
1553	NOREF(fLiveSave);
1554
1555	/*
1556	* The RAM.
1557	*/
1558	RTGCPHYS GCPhysLast = NIL_RTGCPHYS;
1559	RTGCPHYS GCPhysCur = 0;
1560	PPGMRAMRANGE pCur;
1561
1562	PGM_LOCK_VOID(pVM);
1563	do
1564	{
1565	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1566	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1567	{
1568	if ( pCur->GCPhysLast > GCPhysCur
1569	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1570	{
1571	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1572	uint32_t cPages = pCur->cb >> GUEST_PAGE_SHIFT;
1573	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> GUEST_PAGE_SHIFT;
1574	GCPhysCur = 0;
1575	for (; iPage < cPages; iPage++)
1576	{
1577	/* Do yield first. */
1578	if ( uPass != SSM_PASS_FINAL
1579	&& (iPage & 0x7ff) == 0x100
1580	&& PDMR3CritSectYield(pVM, &pVM->pgm.s.CritSectX)
1581	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1582	{
1583	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
1584	break; /* restart */
1585	}
1586
1587	PPGMPAGE pCurPage = &pCur->aPages[iPage];
1588
1589	/*
1590	* Only save pages that haven't changed since last scan and are dirty.
1591	*/
1592	if ( uPass != SSM_PASS_FINAL
1593	&& paLSPages)
1594	{
1595	if (!paLSPages[iPage].fDirty)
1596	continue;
1597	if (paLSPages[iPage].fWriteMonitoredJustNow)
1598	continue;
1599	if (paLSPages[iPage].fIgnore)
1600	continue;
1601	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM) /* in case of recent remappings */
1602	continue;
1603	if ( PGM_PAGE_GET_STATE(pCurPage)
1604	!= ( paLSPages[iPage].fZero
1605	? PGM_PAGE_STATE_ZERO
1606	: paLSPages[iPage].fShared
1607	? PGM_PAGE_STATE_SHARED
1608	: PGM_PAGE_STATE_WRITE_MONITORED))
1609	continue;
1610	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) > 0)
1611	continue;
1612	}
1613	else
1614	{
1615	if ( paLSPages
1616	&& !paLSPages[iPage].fDirty
1617	&& !paLSPages[iPage].fIgnore)
1618	{
1619	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1620	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1621	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#1");
1622	#endif
1623	continue;
1624	}
1625	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1626	continue;
1627	}
1628
1629	/*
1630	* Do the saving outside the PGM critsect since SSM may block on I/O.
1631	*/
1632	int rc;
1633	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
1634	bool fZero = PGM_PAGE_IS_ZERO(pCurPage);
1635	bool fBallooned = PGM_PAGE_IS_BALLOONED(pCurPage);
1636	bool fSkipped = false;
1637
1638	if (!fZero && !fBallooned)
1639	{
1640	/*
1641	* Copy the page and then save it outside the lock (since any
1642	* SSM call may block).
1643	*/
1644	uint8_t abPage[GUEST_PAGE_SIZE];
1645	PGMPAGEMAPLOCK PgMpLck;
1646	void const *pvPage;
1647	rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pCurPage, GCPhys, &pvPage, &PgMpLck);
1648	if (RT_SUCCESS(rc))
1649	{
1650	memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
1651	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1652	if (paLSPages)
1653	pgmR3StateVerifyCrc32ForPage(abPage, pCur, paLSPages, iPage, "save#3");
1654	#endif
1655	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1656	}
1657	PGM_UNLOCK(pVM);
1658	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
1659
1660	/* Try save some memory when restoring. */
1661	if (!ASMMemIsZero(pvPage, GUEST_PAGE_SIZE))
1662	{
1663	if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
1664	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
1665	else
1666	{
1667	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW \| PGM_STATE_REC_FLAG_ADDR);
1668	SSMR3PutGCPhys(pSSM, GCPhys);
1669	}
1670	rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
1671	}
1672	else
1673	{
1674	if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
1675	rc = SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO);
1676	else
1677	{
1678	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO \| PGM_STATE_REC_FLAG_ADDR);
1679	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1680	}
1681	}
1682	}
1683	else
1684	{
1685	/*
1686	* Dirty zero or ballooned page.
1687	*/
1688	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1689	if (paLSPages)
1690	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#2");
1691	#endif
1692	PGM_UNLOCK(pVM);
1693
1694	uint8_t u8RecType = fBallooned ? PGM_STATE_REC_RAM_BALLOONED : PGM_STATE_REC_RAM_ZERO;
1695	if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
1696	rc = SSMR3PutU8(pSSM, u8RecType);
1697	else
1698	{
1699	SSMR3PutU8(pSSM, u8RecType \| PGM_STATE_REC_FLAG_ADDR);
1700	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1701	}
1702	}
1703	if (RT_FAILURE(rc))
1704	return rc;
1705
1706	PGM_LOCK_VOID(pVM);
1707	if (!fSkipped)
1708	GCPhysLast = GCPhys;
1709	if (paLSPages)
1710	{
1711	paLSPages[iPage].fDirty = 0;
1712	pVM->pgm.s.LiveSave.Ram.cReadyPages++;
1713	if (fZero)
1714	pVM->pgm.s.LiveSave.Ram.cZeroPages++;
1715	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1716	pVM->pgm.s.LiveSave.cSavedPages++;
1717	}
1718	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1719	{
1720	GCPhysCur = GCPhys \| GUEST_PAGE_OFFSET_MASK;
1721	break; /* restart */
1722	}
1723
1724	} /* for each page in range */
1725
1726	if (GCPhysCur != 0)
1727	break; /* Yield + ramrange change */
1728	GCPhysCur = pCur->GCPhysLast;
1729	}
1730	} /* for each range */
1731	} while (pCur);
1732
1733	PGM_UNLOCK(pVM);
1734
1735	return VINF_SUCCESS;
1736	}
1737
1738
1739	/**
1740	* Cleans up RAM pages after a live save.
1741	*
1742	* @param pVM The cross context VM structure.
1743	*/
1744	static void pgmR3DoneRamPages(PVM pVM)
1745	{
1746	/*
1747	* Free the tracking arrays and disable write monitoring.
1748	*
1749	* Play nice with the PGM lock in case we're called while the VM is still
1750	* running. This means we have to delay the freeing since we wish to use
1751	* paLSPages as an indicator of which RAM ranges which we need to scan for
1752	* write monitored pages.
1753	*/
1754	void *pvToFree = NULL;
1755	PPGMRAMRANGE pCur;
1756	uint32_t cMonitoredPages = 0;
1757	PGM_LOCK_VOID(pVM);
1758	do
1759	{
1760	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1761	{
1762	if (pCur->paLSPages)
1763	{
1764	if (pvToFree)
1765	{
1766	uint32_t idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1767	PGM_UNLOCK(pVM);
1768	MMR3HeapFree(pvToFree);
1769	pvToFree = NULL;
1770	PGM_LOCK_VOID(pVM);
1771	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1772	break; /* start over again. */
1773	}
1774
1775	pvToFree = pCur->paLSPages;
1776	pCur->paLSPages = NULL;
1777
1778	uint32_t iPage = pCur->cb >> GUEST_PAGE_SHIFT;
1779	while (iPage--)
1780	{
1781	PPGMPAGE pPage = &pCur->aPages[iPage];
1782	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pPage);
1783	if (PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_WRITE_MONITORED)
1784	{
1785	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ALLOCATED);
1786	cMonitoredPages++;
1787	}
1788	}
1789	}
1790	}
1791	} while (pCur);
1792
1793	Assert(pVM->pgm.s.cMonitoredPages >= cMonitoredPages);
1794	if (pVM->pgm.s.cMonitoredPages < cMonitoredPages)
1795	pVM->pgm.s.cMonitoredPages = 0;
1796	else
1797	pVM->pgm.s.cMonitoredPages -= cMonitoredPages;
1798
1799	PGM_UNLOCK(pVM);
1800
1801	MMR3HeapFree(pvToFree);
1802	pvToFree = NULL;
1803	}
1804
1805
1806	/**
1807	* @callback_method_impl{FNSSMINTLIVEEXEC}
1808	*/
1809	static DECLCALLBACK(int) pgmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1810	{
1811	int rc;
1812
1813	/*
1814	* Save the MMIO2 and ROM range IDs in pass 0.
1815	*/
1816	if (uPass == 0)
1817	{
1818	rc = pgmR3SaveRamConfig(pVM, pSSM);
1819	if (RT_FAILURE(rc))
1820	return rc;
1821	rc = pgmR3SaveRomRanges(pVM, pSSM);
1822	if (RT_FAILURE(rc))
1823	return rc;
1824	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
1825	if (RT_FAILURE(rc))
1826	return rc;
1827	}
1828	/*
1829	* Reset the page-per-second estimate to avoid inflation by the initial
1830	* load of zero pages. pgmR3LiveVote ASSUMES this is done at pass 7.
1831	*/
1832	else if (uPass == 7)
1833	{
1834	pVM->pgm.s.LiveSave.cSavedPages = 0;
1835	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
1836	}
1837
1838	/*
1839	* Do the scanning.
1840	*/
1841	pgmR3ScanRomPages(pVM);
1842	pgmR3ScanMmio2Pages(pVM, uPass);
1843	pgmR3ScanRamPages(pVM, false /fFinalPass/);
1844	pgmR3PoolClearAll(pVM, true /fFlushRemTlb/); /** @todo this could perhaps be optimized a bit. */
1845
1846	/*
1847	* Save the pages.
1848	*/
1849	if (uPass == 0)
1850	rc = pgmR3SaveRomVirginPages( pVM, pSSM, true /fLiveSave/);
1851	else
1852	rc = VINF_SUCCESS;
1853	if (RT_SUCCESS(rc))
1854	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, true /fLiveSave/, false /fFinalPass/);
1855	if (RT_SUCCESS(rc))
1856	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, uPass);
1857	if (RT_SUCCESS(rc))
1858	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, uPass);
1859	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes care of it.) */
1860
1861	return rc;
1862	}
1863
1864
1865	/**
1866	* @callback_method_impl{FNSSMINTLIVEVOTE}
1867	*/
1868	static DECLCALLBACK(int) pgmR3LiveVote(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1869	{
1870	/*
1871	* Update and calculate parameters used in the decision making.
1872	*/
1873	const uint32_t cHistoryEntries = RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory);
1874
1875	/* update history. */
1876	PGM_LOCK_VOID(pVM);
1877	uint32_t const cWrittenToPages = pVM->pgm.s.cWrittenToPages;
1878	PGM_UNLOCK(pVM);
1879	uint32_t const cDirtyNow = pVM->pgm.s.LiveSave.Rom.cDirtyPages
1880	+ pVM->pgm.s.LiveSave.Mmio2.cDirtyPages
1881	+ pVM->pgm.s.LiveSave.Ram.cDirtyPages
1882	+ cWrittenToPages;
1883	uint32_t i = pVM->pgm.s.LiveSave.iDirtyPagesHistory;
1884	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = cDirtyNow;
1885	pVM->pgm.s.LiveSave.iDirtyPagesHistory = (i + 1) % cHistoryEntries;
1886
1887	/* calc shortterm average (4 passes). */
1888	AssertCompile(RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory) > 4);
1889	uint64_t cTotal = pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1890	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 1) % cHistoryEntries];
1891	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 2) % cHistoryEntries];
1892	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 3) % cHistoryEntries];
1893	uint32_t const cDirtyPagesShort = cTotal / 4;
1894	pVM->pgm.s.LiveSave.cDirtyPagesShort = cDirtyPagesShort;
1895
1896	/* calc longterm average. */
1897	cTotal = 0;
1898	if (uPass < cHistoryEntries)
1899	for (i = 0; i < cHistoryEntries && i <= uPass; i++)
1900	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1901	else
1902	for (i = 0; i < cHistoryEntries; i++)
1903	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1904	uint32_t const cDirtyPagesLong = cTotal / cHistoryEntries;
1905	pVM->pgm.s.LiveSave.cDirtyPagesLong = cDirtyPagesLong;
1906
1907	/* estimate the speed */
1908	uint64_t cNsElapsed = RTTimeNanoTS() - pVM->pgm.s.LiveSave.uSaveStartNS;
1909	uint32_t cPagesPerSecond = (uint32_t)( (long double)pVM->pgm.s.LiveSave.cSavedPages
1910	/ ((long double)cNsElapsed / 1000000000.0) );
1911	pVM->pgm.s.LiveSave.cPagesPerSecond = cPagesPerSecond;
1912
1913	/*
1914	* Try make a decision.
1915	*/
1916	if ( cDirtyPagesShort <= cDirtyPagesLong
1917	&& ( cDirtyNow <= cDirtyPagesShort
1918	\|\| cDirtyNow - cDirtyPagesShort < RT_MIN(cDirtyPagesShort / 8, 16)
1919	)
1920	)
1921	{
1922	if (uPass > 10)
1923	{
1924	uint32_t cMsLeftShort = (uint32_t)(cDirtyPagesShort / (long double)cPagesPerSecond * 1000.0);
1925	uint32_t cMsLeftLong = (uint32_t)(cDirtyPagesLong / (long double)cPagesPerSecond * 1000.0);
1926	uint32_t cMsMaxDowntime = SSMR3HandleMaxDowntime(pSSM);
1927	if (cMsMaxDowntime < 32)
1928	cMsMaxDowntime = 32;
1929	if ( ( cMsLeftLong <= cMsMaxDowntime
1930	&& cMsLeftShort < cMsMaxDowntime)
1931	\|\| cMsLeftShort < cMsMaxDowntime / 2
1932	)
1933	{
1934	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u\|%ums cDirtyPagesLong=%u\|%ums cMsMaxDowntime=%u\n",
1935	uPass, cDirtyPagesShort, cMsLeftShort, cDirtyPagesLong, cMsLeftLong, cMsMaxDowntime));
1936	return VINF_SUCCESS;
1937	}
1938	}
1939	else
1940	{
1941	if ( ( cDirtyPagesShort <= 128
1942	&& cDirtyPagesLong <= 1024)
1943	\|\| cDirtyPagesLong <= 256
1944	)
1945	{
1946	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u cDirtyPagesLong=%u\n", uPass, cDirtyPagesShort, cDirtyPagesLong));
1947	return VINF_SUCCESS;
1948	}
1949	}
1950	}
1951
1952	/*
1953	* Come up with a completion percentage. Currently this is a simple
1954	* dirty page (long term) vs. total pages ratio + some pass trickery.
1955	*/
1956	unsigned uPctDirty = (unsigned)( (long double)cDirtyPagesLong
1957	/ (pVM->pgm.s.cAllPages - pVM->pgm.s.LiveSave.cIgnoredPages - pVM->pgm.s.cZeroPages) );
1958	if (uPctDirty <= 100)
1959	SSMR3HandleReportLivePercent(pSSM, RT_MIN(100 - uPctDirty, uPass * 2));
1960	else
1961	AssertMsgFailed(("uPctDirty=%u cDirtyPagesLong=%#x cAllPages=%#x cIgnoredPages=%#x cZeroPages=%#x\n",
1962	uPctDirty, cDirtyPagesLong, pVM->pgm.s.cAllPages, pVM->pgm.s.LiveSave.cIgnoredPages, pVM->pgm.s.cZeroPages));
1963
1964	return VINF_SSM_VOTE_FOR_ANOTHER_PASS;
1965	}
1966
1967
1968	/**
1969	* @callback_method_impl{FNSSMINTLIVEPREP}
1970	*
1971	* This will attempt to allocate and initialize the tracking structures. It
1972	* will also prepare for write monitoring of pages and initialize PGM::LiveSave.
1973	* pgmR3SaveDone will do the cleanups.
1974	*/
1975	static DECLCALLBACK(int) pgmR3LivePrep(PVM pVM, PSSMHANDLE pSSM)
1976	{
1977	/*
1978	* Indicate that we will be using the write monitoring.
1979	*/
1980	PGM_LOCK_VOID(pVM);
1981	/** @todo find a way of mediating this when more users are added. */
1982	if (pVM->pgm.s.fPhysWriteMonitoringEngaged)
1983	{
1984	PGM_UNLOCK(pVM);
1985	AssertLogRelFailedReturn(VERR_PGM_WRITE_MONITOR_ENGAGED);
1986	}
1987	pVM->pgm.s.fPhysWriteMonitoringEngaged = true;
1988	PGM_UNLOCK(pVM);
1989
1990	/*
1991	* Initialize the statistics.
1992	*/
1993	pVM->pgm.s.LiveSave.Rom.cReadyPages = 0;
1994	pVM->pgm.s.LiveSave.Rom.cDirtyPages = 0;
1995	pVM->pgm.s.LiveSave.Mmio2.cReadyPages = 0;
1996	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages = 0;
1997	pVM->pgm.s.LiveSave.Ram.cReadyPages = 0;
1998	pVM->pgm.s.LiveSave.Ram.cDirtyPages = 0;
1999	pVM->pgm.s.LiveSave.cIgnoredPages = 0;
2000	pVM->pgm.s.LiveSave.fActive = true;
2001	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory); i++)
2002	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = UINT32_MAX / 2;
2003	pVM->pgm.s.LiveSave.iDirtyPagesHistory = 0;
2004	pVM->pgm.s.LiveSave.cSavedPages = 0;
2005	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
2006	pVM->pgm.s.LiveSave.cPagesPerSecond = 8192;
2007
2008	/*
2009	* Per page type.
2010	*/
2011	int rc = pgmR3PrepRomPages(pVM);
2012	if (RT_SUCCESS(rc))
2013	rc = pgmR3PrepMmio2Pages(pVM);
2014	if (RT_SUCCESS(rc))
2015	rc = pgmR3PrepRamPages(pVM);
2016
2017	NOREF(pSSM);
2018	return rc;
2019	}
2020
2021
2022	/**
2023	* @callback_method_impl{FNSSMINTSAVEEXEC}
2024	*/
2025	static DECLCALLBACK(int) pgmR3SaveExec(PVM pVM, PSSMHANDLE pSSM)
2026	{
2027	PPGM pPGM = &pVM->pgm.s;
2028
2029	/*
2030	* Lock PGM and set the no-more-writes indicator.
2031	*/
2032	PGM_LOCK_VOID(pVM);
2033	pVM->pgm.s.fNoMorePhysWrites = true;
2034
2035	/*
2036	* Save basic data (required / unaffected by relocation).
2037	*/
2038	int rc = SSMR3PutStructEx(pSSM, pPGM, sizeof(pPGM), 0 /fFlags/, &s_aPGMFields[0], NULL /pvUser*/);
2039
2040	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus && RT_SUCCESS(rc); idCpu++)
2041	rc = SSMR3PutStruct(pSSM, &pVM->apCpusR3[idCpu]->pgm.s, &s_aPGMCpuFields[0]);
2042
2043	/*
2044	* Save the (remainder of the) memory.
2045	*/
2046	if (RT_SUCCESS(rc))
2047	{
2048	if (pVM->pgm.s.LiveSave.fActive)
2049	{
2050	pgmR3ScanRomPages(pVM);
2051	pgmR3ScanMmio2Pages(pVM, SSM_PASS_FINAL);
2052	pgmR3ScanRamPages(pVM, true /fFinalPass/);
2053
2054	rc = pgmR3SaveShadowedRomPages( pVM, pSSM, true /fLiveSave/, true /fFinalPass/);
2055	if (RT_SUCCESS(rc))
2056	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2057	if (RT_SUCCESS(rc))
2058	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2059	}
2060	else
2061	{
2062	rc = pgmR3SaveRamConfig(pVM, pSSM);
2063	if (RT_SUCCESS(rc))
2064	rc = pgmR3SaveRomRanges(pVM, pSSM);
2065	if (RT_SUCCESS(rc))
2066	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
2067	if (RT_SUCCESS(rc))
2068	rc = pgmR3SaveRomVirginPages( pVM, pSSM, false /fLiveSave/);
2069	if (RT_SUCCESS(rc))
2070	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, false /fLiveSave/, true /fFinalPass/);
2071	if (RT_SUCCESS(rc))
2072	rc = pgmR3SaveMmio2Pages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2073	if (RT_SUCCESS(rc))
2074	rc = pgmR3SaveRamPages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2075	}
2076	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes of it.) */
2077	}
2078
2079	PGM_UNLOCK(pVM);
2080	return rc;
2081	}
2082
2083
2084	/**
2085	* @callback_method_impl{FNSSMINTSAVEDONE}
2086	*/
2087	static DECLCALLBACK(int) pgmR3SaveDone(PVM pVM, PSSMHANDLE pSSM)
2088	{
2089	/*
2090	* Do per page type cleanups first.
2091	*/
2092	if (pVM->pgm.s.LiveSave.fActive)
2093	{
2094	pgmR3DoneRomPages(pVM);
2095	pgmR3DoneMmio2Pages(pVM);
2096	pgmR3DoneRamPages(pVM);
2097	}
2098
2099	/*
2100	* Clear the live save indicator and disengage write monitoring.
2101	*/
2102	PGM_LOCK_VOID(pVM);
2103	pVM->pgm.s.LiveSave.fActive = false;
2104	/** @todo this is blindly assuming that we're the only user of write
2105	* monitoring. Fix this when more users are added. */
2106	pVM->pgm.s.fPhysWriteMonitoringEngaged = false;
2107	PGM_UNLOCK(pVM);
2108
2109	NOREF(pSSM);
2110	return VINF_SUCCESS;
2111	}
2112
2113
2114	/**
2115	* @callback_method_impl{FNSSMINTLOADPREP}
2116	*/
2117	static DECLCALLBACK(int) pgmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM)
2118	{
2119	/*
2120	* Call the reset function to make sure all the memory is cleared.
2121	*/
2122	PGMR3Reset(pVM);
2123	pVM->pgm.s.LiveSave.fActive = false;
2124	NOREF(pSSM);
2125	return VINF_SUCCESS;
2126	}
2127
2128
2129	/**
2130	* Load an ignored page.
2131	*
2132	* @returns VBox status code.
2133	* @param pSSM The saved state handle.
2134	*/
2135	static int pgmR3LoadPageToDevNullOld(PSSMHANDLE pSSM)
2136	{
2137	uint8_t abPage[GUEST_PAGE_SIZE];
2138	return SSMR3GetMem(pSSM, &abPage[0], sizeof(abPage));
2139	}
2140
2141
2142	/**
2143	* Compares a page with an old save type value.
2144	*
2145	* @returns true if equal, false if not.
2146	* @param pPage The page to compare.
2147	* @param uOldType The old type value from the saved state.
2148	*/
2149	DECLINLINE(bool) pgmR3CompareNewAndOldPageTypes(PPGMPAGE pPage, uint8_t uOldType)
2150	{
2151	uint8_t uOldPageType;
2152	switch (PGM_PAGE_GET_TYPE(pPage))
2153	{
2154	case PGMPAGETYPE_INVALID: uOldPageType = PGMPAGETYPE_OLD_INVALID; break;
2155	case PGMPAGETYPE_RAM: uOldPageType = PGMPAGETYPE_OLD_RAM; break;
2156	case PGMPAGETYPE_MMIO2: uOldPageType = PGMPAGETYPE_OLD_MMIO2; break;
2157	case PGMPAGETYPE_MMIO2_ALIAS_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO2_ALIAS_MMIO; break;
2158	case PGMPAGETYPE_ROM_SHADOW: uOldPageType = PGMPAGETYPE_OLD_ROM_SHADOW; break;
2159	case PGMPAGETYPE_ROM: uOldPageType = PGMPAGETYPE_OLD_ROM; break;
2160	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO: RT_FALL_THRU();
2161	case PGMPAGETYPE_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO; break;
2162	default:
2163	AssertFailed();
2164	uOldPageType = PGMPAGETYPE_OLD_INVALID;
2165	break;
2166	}
2167	return uOldPageType == uOldType;
2168	}
2169
2170
2171	/**
2172	* Loads a page without any bits in the saved state, i.e. making sure it's
2173	* really zero.
2174	*
2175	* @returns VBox status code.
2176	* @param pVM The cross context VM structure.
2177	* @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
2178	* state).
2179	* @param pPage The guest page tracking structure.
2180	* @param GCPhys The page address.
2181	* @param pRam The ram range (logging).
2182	*/
2183	static int pgmR3LoadPageZeroOld(PVM pVM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2184	{
2185	if ( uOldType != PGMPAGETYPE_OLD_INVALID
2186	&& !pgmR3CompareNewAndOldPageTypes(pPage, uOldType))
2187	return VERR_SSM_UNEXPECTED_DATA;
2188
2189	/* I think this should be sufficient. */
2190	if ( !PGM_PAGE_IS_ZERO(pPage)
2191	&& !PGM_PAGE_IS_BALLOONED(pPage))
2192	return VERR_SSM_UNEXPECTED_DATA;
2193
2194	NOREF(pVM);
2195	NOREF(GCPhys);
2196	NOREF(pRam);
2197	return VINF_SUCCESS;
2198	}
2199
2200
2201	/**
2202	* Loads a page from the saved state.
2203	*
2204	* @returns VBox status code.
2205	* @param pVM The cross context VM structure.
2206	* @param pSSM The SSM handle.
2207	* @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
2208	* state).
2209	* @param pPage The guest page tracking structure.
2210	* @param GCPhys The page address.
2211	* @param pRam The ram range (logging).
2212	*/
2213	static int pgmR3LoadPageBitsOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2214	{
2215	/*
2216	* Match up the type, dealing with MMIO2 aliases (dropped).
2217	*/
2218	AssertLogRelMsgReturn( uOldType == PGMPAGETYPE_INVALID
2219	\|\| pgmR3CompareNewAndOldPageTypes(pPage, uOldType)
2220	/* kudge for the expanded PXE bios (r67885) - @bugref{5687}: */
2221	\|\| ( uOldType == PGMPAGETYPE_OLD_RAM
2222	&& GCPhys >= 0xed000
2223	&& GCPhys <= 0xeffff
2224	&& PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM)
2225	,
2226	("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc),
2227	VERR_SSM_UNEXPECTED_DATA);
2228
2229	/*
2230	* Load the page.
2231	*/
2232	PGMPAGEMAPLOCK PgMpLck;
2233	void *pvPage;
2234	int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvPage, &PgMpLck);
2235	if (RT_SUCCESS(rc))
2236	{
2237	rc = SSMR3GetMem(pSSM, pvPage, GUEST_PAGE_SIZE);
2238	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2239	}
2240
2241	return rc;
2242	}
2243
2244
2245	/**
2246	* Loads a page (counter part to pgmR3SavePage).
2247	*
2248	* @returns VBox status code, fully bitched errors.
2249	* @param pVM The cross context VM structure.
2250	* @param pSSM The SSM handle.
2251	* @param uOldType The page type.
2252	* @param pPage The page.
2253	* @param GCPhys The page address.
2254	* @param pRam The RAM range (for error messages).
2255	*/
2256	static int pgmR3LoadPageOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2257	{
2258	uint8_t uState;
2259	int rc = SSMR3GetU8(pSSM, &uState);
2260	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s rc=%Rrc\n", pPage, GCPhys, pRam->pszDesc, rc), rc);
2261	if (uState == 0 /* zero */)
2262	rc = pgmR3LoadPageZeroOld(pVM, uOldType, pPage, GCPhys, pRam);
2263	else if (uState == 1)
2264	rc = pgmR3LoadPageBitsOld(pVM, pSSM, uOldType, pPage, GCPhys, pRam);
2265	else
2266	rc = VERR_PGM_INVALID_SAVED_PAGE_STATE;
2267	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] uState=%d uOldType=%d GCPhys=%RGp %s rc=%Rrc\n",
2268	pPage, uState, uOldType, GCPhys, pRam->pszDesc, rc),
2269	rc);
2270	return VINF_SUCCESS;
2271	}
2272
2273
2274	/**
2275	* Loads a shadowed ROM page.
2276	*
2277	* @returns VBox status code, errors are fully bitched.
2278	* @param pVM The cross context VM structure.
2279	* @param pSSM The saved state handle.
2280	* @param pPage The page.
2281	* @param GCPhys The page address.
2282	* @param pRam The RAM range (for error messages).
2283	*/
2284	static int pgmR3LoadShadowedRomPageOld(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2285	{
2286	/*
2287	* Load and set the protection first, then load the two pages, the first
2288	* one is the active the other is the passive.
2289	*/
2290	PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
2291	AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2292
2293	uint8_t uProt;
2294	int rc = SSMR3GetU8(pSSM, &uProt);
2295	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
2296	PGMROMPROT enmProt = (PGMROMPROT)uProt;
2297	AssertLogRelMsgReturn( enmProt >= PGMROMPROT_INVALID
2298	&& enmProt < PGMROMPROT_END,
2299	("enmProt=%d pPage=%R[pgmpage] GCPhys=%#x %s\n", enmProt, pPage, GCPhys, pRam->pszDesc),
2300	VERR_SSM_UNEXPECTED_DATA);
2301
2302	if (pRomPage->enmProt != enmProt)
2303	{
2304	rc = PGMR3PhysRomProtect(pVM, GCPhys, GUEST_PAGE_SIZE, enmProt);
2305	AssertLogRelRCReturn(rc, rc);
2306	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2307	}
2308
2309	PPGMPAGE pPageActive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Virgin : &pRomPage->Shadow;
2310	PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
2311	uint8_t u8ActiveType = PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM : PGMPAGETYPE_ROM_SHADOW;
2312	uint8_t u8PassiveType= PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM_SHADOW : PGMPAGETYPE_ROM;
2313
2314	/** @todo this isn't entirely correct as long as pgmPhysGCPhys2CCPtrInternal is
2315	* used down the line (will the 2nd page will be written to the first
2316	* one because of a false TLB hit since the TLB is using GCPhys and
2317	* doesn't check the HCPhys of the desired page). */
2318	rc = pgmR3LoadPageOld(pVM, pSSM, u8ActiveType, pPage, GCPhys, pRam);
2319	if (RT_SUCCESS(rc))
2320	{
2321	pPageActive = pPage;
2322	rc = pgmR3LoadPageOld(pVM, pSSM, u8PassiveType, pPagePassive, GCPhys, pRam);
2323	}
2324	return rc;
2325	}
2326
2327	/**
2328	* Ram range flags and bits for older versions of the saved state.
2329	*
2330	* @returns VBox status code.
2331	*
2332	* @param pVM The cross context VM structure.
2333	* @param pSSM The SSM handle.
2334	* @param uVersion The saved state version.
2335	*/
2336	static int pgmR3LoadMemoryOld(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2337	{
2338	PPGM pPGM = &pVM->pgm.s;
2339
2340	/*
2341	* Ram range flags and bits.
2342	*/
2343	uint32_t i = 0;
2344	for (PPGMRAMRANGE pRam = pPGM->pRamRangesXR3; ; pRam = pRam->pNextR3, i++)
2345	{
2346	/* Check the sequence number / separator. */
2347	uint32_t u32Sep;
2348	int rc = SSMR3GetU32(pSSM, &u32Sep);
2349	if (RT_FAILURE(rc))
2350	return rc;
2351	if (u32Sep == ~0U)
2352	break;
2353	if (u32Sep != i)
2354	{
2355	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2356	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2357	}
2358	AssertLogRelReturn(pRam, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2359
2360	/* Get the range details. */
2361	RTGCPHYS GCPhys;
2362	SSMR3GetGCPhys(pSSM, &GCPhys);
2363	RTGCPHYS GCPhysLast;
2364	SSMR3GetGCPhys(pSSM, &GCPhysLast);
2365	RTGCPHYS cb;
2366	SSMR3GetGCPhys(pSSM, &cb);
2367	uint8_t fHaveBits;
2368	rc = SSMR3GetU8(pSSM, &fHaveBits);
2369	if (RT_FAILURE(rc))
2370	return rc;
2371	if (fHaveBits & ~1)
2372	{
2373	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2374	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2375	}
2376	size_t cchDesc = 0;
2377	char szDesc[256];
2378	szDesc[0] = '\0';
2379	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2380	{
2381	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2382	if (RT_FAILURE(rc))
2383	return rc;
2384	/* Since we've modified the description strings in r45878, only compare
2385	them if the saved state is more recent. */
2386	if (uVersion != PGM_SAVED_STATE_VERSION_RR_DESC)
2387	cchDesc = strlen(szDesc);
2388	}
2389
2390	/*
2391	* Match it up with the current range.
2392	*
2393	* Note there is a hack for dealing with the high BIOS mapping
2394	* in the old saved state format, this means we might not have
2395	* a 1:1 match on success.
2396	*/
2397	if ( ( GCPhys != pRam->GCPhys
2398	\|\| GCPhysLast != pRam->GCPhysLast
2399	\|\| cb != pRam->cb
2400	\|\| ( cchDesc
2401	&& strcmp(szDesc, pRam->pszDesc)) )
2402	/* Hack for PDMDevHlpPhysReserve(pDevIns, 0xfff80000, 0x80000, "High ROM Region"); */
2403	&& ( uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE
2404	\|\| GCPhys != UINT32_C(0xfff80000)
2405	\|\| GCPhysLast != UINT32_C(0xffffffff)
2406	\|\| pRam->GCPhysLast != GCPhysLast
2407	\|\| pRam->GCPhys < GCPhys
2408	\|\| !fHaveBits)
2409	)
2410	{
2411	LogRel(("Ram range: %RGp-%RGp %RGp bytes %s %s\n"
2412	"State : %RGp-%RGp %RGp bytes %s %s\n",
2413	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc,
2414	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc));
2415	/*
2416	* If we're loading a state for debugging purpose, don't make a fuss if
2417	* the MMIO and ROM stuff isn't 100% right, just skip the mismatches.
2418	*/
2419	if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
2420	\|\| GCPhys < 8 * _1M)
2421	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2422	N_("RAM range mismatch; saved={%RGp-%RGp %RGp bytes %s %s} config={%RGp-%RGp %RGp bytes %s %s}"),
2423	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc,
2424	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc);
2425
2426	AssertMsgFailed(("debug skipping not implemented, sorry\n"));
2427	continue;
2428	}
2429
2430	uint32_t cPages = (GCPhysLast - GCPhys + 1) >> GUEST_PAGE_SHIFT;
2431	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2432	{
2433	/*
2434	* Load the pages one by one.
2435	*/
2436	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2437	{
2438	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
2439	PPGMPAGE pPage = &pRam->aPages[iPage];
2440	uint8_t uOldType;
2441	rc = SSMR3GetU8(pSSM, &uOldType);
2442	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] iPage=%#x GCPhysPage=%#x %s\n", pPage, iPage, GCPhysPage, pRam->pszDesc), rc);
2443	if (uOldType == PGMPAGETYPE_OLD_ROM_SHADOW)
2444	rc = pgmR3LoadShadowedRomPageOld(pVM, pSSM, pPage, GCPhysPage, pRam);
2445	else
2446	rc = pgmR3LoadPageOld(pVM, pSSM, uOldType, pPage, GCPhysPage, pRam);
2447	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2448	}
2449	}
2450	else
2451	{
2452	/*
2453	* Old format.
2454	*/
2455
2456	/* Of the page flags, pick up MMIO2 and ROM/RESERVED for the !fHaveBits case.
2457	The rest is generally irrelevant and wrong since the stuff have to match registrations. */
2458	uint32_t fFlags = 0;
2459	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2460	{
2461	uint16_t u16Flags;
2462	rc = SSMR3GetU16(pSSM, &u16Flags);
2463	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2464	fFlags \|= u16Flags;
2465	}
2466
2467	/* Load the bits */
2468	if ( !fHaveBits
2469	&& GCPhysLast < UINT32_C(0xe0000000))
2470	{
2471	/*
2472	* Dynamic chunks.
2473	*/
2474	const uint32_t cPagesInChunk = (110241024) >> GUEST_PAGE_SHIFT;
2475	AssertLogRelMsgReturn(cPages % cPagesInChunk == 0,
2476	("cPages=%#x cPagesInChunk=%#x GCPhys=%RGp %s\n", cPages, cPagesInChunk, pRam->GCPhys, pRam->pszDesc),
2477	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2478
2479	for (uint32_t iPage = 0; iPage < cPages; /* incremented by inner loop */ )
2480	{
2481	uint8_t fPresent;
2482	rc = SSMR3GetU8(pSSM, &fPresent);
2483	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2484	AssertLogRelMsgReturn(fPresent == (uint8_t)true \|\| fPresent == (uint8_t)false,
2485	("fPresent=%#x iPage=%#x GCPhys=%#x %s\n", fPresent, iPage, pRam->GCPhys, pRam->pszDesc),
2486	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2487
2488	for (uint32_t iChunkPage = 0; iChunkPage < cPagesInChunk; iChunkPage++, iPage++)
2489	{
2490	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
2491	PPGMPAGE pPage = &pRam->aPages[iPage];
2492	if (fPresent)
2493	{
2494	if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_MMIO
2495	\|\| PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_SPECIAL_ALIAS_MMIO)
2496	rc = pgmR3LoadPageToDevNullOld(pSSM);
2497	else
2498	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2499	}
2500	else
2501	rc = pgmR3LoadPageZeroOld(pVM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2502	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2503	}
2504	}
2505	}
2506	else if (pRam->pvR3)
2507	{
2508	/*
2509	* MMIO2.
2510	*/
2511	AssertLogRelMsgReturn((fFlags & 0x0f) == RT_BIT(3) /MM_RAM_FLAGS_MMIO2/,
2512	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2513	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2514	AssertLogRelMsgReturn(pRam->pvR3,
2515	("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc),
2516	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2517
2518	rc = SSMR3GetMem(pSSM, pRam->pvR3, pRam->cb);
2519	AssertLogRelMsgRCReturn(rc, ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc), rc);
2520	}
2521	else if (GCPhysLast < UINT32_C(0xfff80000))
2522	{
2523	/*
2524	* PCI MMIO, no pages saved.
2525	*/
2526	}
2527	else
2528	{
2529	/*
2530	* Load the 0xfff80000..0xffffffff BIOS range.
2531	* It starts with X reserved pages that we have to skip over since
2532	* the RAMRANGE create by the new code won't include those.
2533	*/
2534	AssertLogRelMsgReturn( !(fFlags & RT_BIT(3) /MM_RAM_FLAGS_MMIO2/)
2535	&& (fFlags & RT_BIT(0) /MM_RAM_FLAGS_RESERVED/),
2536	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2537	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2538	AssertLogRelMsgReturn(GCPhys == UINT32_C(0xfff80000),
2539	("GCPhys=%RGp pRamRange{GCPhys=%#x %s}\n", GCPhys, pRam->GCPhys, pRam->pszDesc),
2540	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2541
2542	/* Skip wasted reserved pages before the ROM. */
2543	while (GCPhys < pRam->GCPhys)
2544	{
2545	rc = pgmR3LoadPageToDevNullOld(pSSM);
2546	GCPhys += GUEST_PAGE_SIZE;
2547	}
2548
2549	/* Load the bios pages. */
2550	cPages = pRam->cb >> GUEST_PAGE_SHIFT;
2551	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2552	{
2553	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
2554	PPGMPAGE pPage = &pRam->aPages[iPage];
2555
2556	AssertLogRelMsgReturn(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM,
2557	("GCPhys=%RGp pPage=%R[pgmpage]\n", GCPhys, GCPhys),
2558	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2559	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_ROM, pPage, GCPhysPage, pRam);
2560	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2561	}
2562	}
2563	}
2564	}
2565
2566	return VINF_SUCCESS;
2567	}
2568
2569
2570	/**
2571	* Worker for pgmR3Load and pgmR3LoadLocked.
2572	*
2573	* @returns VBox status code.
2574	*
2575	* @param pVM The cross context VM structure.
2576	* @param pSSM The SSM handle.
2577	* @param uVersion The PGM saved state unit version.
2578	* @param uPass The pass number.
2579	*
2580	* @todo This needs splitting up if more record types or code twists are
2581	* added...
2582	*/
2583	static int pgmR3LoadMemory(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2584	{
2585	NOREF(uPass);
2586
2587	/*
2588	* Process page records until we hit the terminator.
2589	*/
2590	RTGCPHYS GCPhys = NIL_RTGCPHYS;
2591	PPGMRAMRANGE pRamHint = NULL;
2592	uint8_t id = UINT8_MAX;
2593	uint32_t iPage = UINT32_MAX - 10;
2594	PPGMROMRANGE pRom = NULL;
2595	PPGMREGMMIO2RANGE pRegMmio = NULL;
2596
2597	/*
2598	* We batch up pages that should be freed instead of calling GMM for
2599	* each and every one of them. Note that we'll lose the pages in most
2600	* failure paths - this should probably be addressed one day.
2601	*/
2602	uint32_t cPendingPages = 0;
2603	PGMMFREEPAGESREQ pReq;
2604	int rc = GMMR3FreePagesPrepare(pVM, &pReq, 128 /* batch size */, GMMACCOUNT_BASE);
2605	AssertLogRelRCReturn(rc, rc);
2606
2607	for (;;)
2608	{
2609	/*
2610	* Get the record type and flags.
2611	*/
2612	uint8_t u8;
2613	rc = SSMR3GetU8(pSSM, &u8);
2614	if (RT_FAILURE(rc))
2615	return rc;
2616	if (u8 == PGM_STATE_REC_END)
2617	{
2618	/*
2619	* Finish off any pages pending freeing.
2620	*/
2621	if (cPendingPages)
2622	{
2623	Log(("pgmR3LoadMemory: GMMR3FreePagesPerform pVM=%p cPendingPages=%u\n", pVM, cPendingPages));
2624	rc = GMMR3FreePagesPerform(pVM, pReq, cPendingPages);
2625	AssertLogRelRCReturn(rc, rc);
2626	}
2627	GMMR3FreePagesCleanup(pReq);
2628	return VINF_SUCCESS;
2629	}
2630	AssertLogRelMsgReturn((u8 & ~PGM_STATE_REC_FLAG_ADDR) <= PGM_STATE_REC_LAST, ("%#x\n", u8), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2631	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2632	{
2633	/*
2634	* RAM page.
2635	*/
2636	case PGM_STATE_REC_RAM_ZERO:
2637	case PGM_STATE_REC_RAM_RAW:
2638	case PGM_STATE_REC_RAM_BALLOONED:
2639	{
2640	/*
2641	* Get the address and resolve it into a page descriptor.
2642	*/
2643	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2644	GCPhys += GUEST_PAGE_SIZE;
2645	else
2646	{
2647	rc = SSMR3GetGCPhys(pSSM, &GCPhys);
2648	if (RT_FAILURE(rc))
2649	return rc;
2650	}
2651	AssertLogRelMsgReturn(!(GCPhys & GUEST_PAGE_OFFSET_MASK), ("%RGp\n", GCPhys), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2652
2653	PPGMPAGE pPage;
2654	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
2655	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2656
2657	/*
2658	* Take action according to the record type.
2659	*/
2660	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2661	{
2662	case PGM_STATE_REC_RAM_ZERO:
2663	{
2664	if (PGM_PAGE_IS_ZERO(pPage))
2665	break;
2666
2667	/* Ballooned pages must be unmarked (live snapshot and
2668	teleportation scenarios). */
2669	if (PGM_PAGE_IS_BALLOONED(pPage))
2670	{
2671	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2672	if (uVersion == PGM_SAVED_STATE_VERSION_BALLOON_BROKEN)
2673	break;
2674	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ZERO);
2675	break;
2676	}
2677
2678	AssertLogRelMsgReturn(PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_ALLOCATED, ("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_UNEXPECTED_PAGE_STATE);
2679
2680	/* If this is a ROM page, we must clear it and not try to
2681	* free it. Ditto if the VM is using RamPreAlloc (see
2682	* @bugref{6318}). */
2683	if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM
2684	\|\| PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM_SHADOW
2685	#ifdef VBOX_WITH_PGM_NEM_MODE
2686	\|\| pVM->pgm.s.fNemMode
2687	#endif
2688	\|\| pVM->pgm.s.fRamPreAlloc)
2689	{
2690	PGMPAGEMAPLOCK PgMpLck;
2691	void *pvDstPage;
2692	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2693	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2694
2695	RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
2696	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2697	}
2698	/* Free it only if it's not part of a previously
2699	allocated large page (no need to clear the page). */
2700	else if ( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2701	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED)
2702	{
2703	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys, (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage));
2704	AssertRCReturn(rc, rc);
2705	}
2706	/** @todo handle large pages (see @bugref{5545}) */
2707	break;
2708	}
2709
2710	case PGM_STATE_REC_RAM_BALLOONED:
2711	{
2712	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2713	if (PGM_PAGE_IS_BALLOONED(pPage))
2714	break;
2715
2716	/* We don't map ballooned pages in our shadow page tables, let's
2717	just free it if allocated and mark as ballooned. See @bugref{5515}. */
2718	if (PGM_PAGE_IS_ALLOCATED(pPage))
2719	{
2720	/** @todo handle large pages + ballooning when it works. (see @bugref{5515},
2721	* @bugref{5545}). */
2722	AssertLogRelMsgReturn( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2723	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED,
2724	("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_LOAD_UNEXPECTED_PAGE_TYPE);
2725
2726	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys, (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage));
2727	AssertRCReturn(rc, rc);
2728	}
2729	Assert(PGM_PAGE_IS_ZERO(pPage));
2730	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_BALLOONED);
2731	break;
2732	}
2733
2734	case PGM_STATE_REC_RAM_RAW:
2735	{
2736	PGMPAGEMAPLOCK PgMpLck;
2737	void *pvDstPage;
2738	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2739	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2740	rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
2741	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2742	if (RT_FAILURE(rc))
2743	return rc;
2744	break;
2745	}
2746
2747	default:
2748	AssertMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2749	}
2750	id = UINT8_MAX;
2751	break;
2752	}
2753
2754	/*
2755	* MMIO2 page.
2756	*/
2757	case PGM_STATE_REC_MMIO2_RAW:
2758	case PGM_STATE_REC_MMIO2_ZERO:
2759	{
2760	/*
2761	* Get the ID + page number and resolved that into a MMIO2 page.
2762	*/
2763	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2764	iPage++;
2765	else
2766	{
2767	SSMR3GetU8(pSSM, &id);
2768	rc = SSMR3GetU32(pSSM, &iPage);
2769	if (RT_FAILURE(rc))
2770	return rc;
2771	}
2772	if ( !pRegMmio
2773	\|\| pRegMmio->idSavedState != id)
2774	{
2775	for (pRegMmio = pVM->pgm.s.pRegMmioRangesR3; pRegMmio; pRegMmio = pRegMmio->pNextR3)
2776	if (pRegMmio->idSavedState == id)
2777	break;
2778	AssertLogRelMsgReturn(pRegMmio, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_MMIO2_RANGE_NOT_FOUND);
2779	}
2780	AssertLogRelMsgReturn(iPage < (pRegMmio->RamRange.cb >> GUEST_PAGE_SHIFT),
2781	("iPage=%#x cb=%RGp %s\n", iPage, pRegMmio->RamRange.cb, pRegMmio->RamRange.pszDesc),
2782	VERR_PGM_SAVED_MMIO2_PAGE_NOT_FOUND);
2783	void pvDstPage = (uint8_t )pRegMmio->RamRange.pvR3 + ((size_t)iPage << GUEST_PAGE_SHIFT);
2784
2785	/*
2786	* Load the page bits.
2787	*/
2788	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_MMIO2_ZERO)
2789	RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
2790	else
2791	{
2792	rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
2793	if (RT_FAILURE(rc))
2794	return rc;
2795	}
2796	GCPhys = NIL_RTGCPHYS;
2797	break;
2798	}
2799
2800	/*
2801	* ROM pages.
2802	*/
2803	case PGM_STATE_REC_ROM_VIRGIN:
2804	case PGM_STATE_REC_ROM_SHW_RAW:
2805	case PGM_STATE_REC_ROM_SHW_ZERO:
2806	case PGM_STATE_REC_ROM_PROT:
2807	{
2808	/*
2809	* Get the ID + page number and resolved that into a ROM page descriptor.
2810	*/
2811	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2812	iPage++;
2813	else
2814	{
2815	SSMR3GetU8(pSSM, &id);
2816	rc = SSMR3GetU32(pSSM, &iPage);
2817	if (RT_FAILURE(rc))
2818	return rc;
2819	}
2820	if ( !pRom
2821	\|\| pRom->idSavedState != id)
2822	{
2823	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
2824	if (pRom->idSavedState == id)
2825	break;
2826	AssertLogRelMsgReturn(pRom, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_ROM_RANGE_NOT_FOUND);
2827	}
2828	AssertLogRelMsgReturn(iPage < (pRom->cb >> GUEST_PAGE_SHIFT),
2829	("iPage=%#x cb=%RGp %s\n", iPage, pRom->cb, pRom->pszDesc),
2830	VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2831	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
2832	GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
2833
2834	/*
2835	* Get and set the protection.
2836	*/
2837	uint8_t u8Prot;
2838	rc = SSMR3GetU8(pSSM, &u8Prot);
2839	if (RT_FAILURE(rc))
2840	return rc;
2841	PGMROMPROT enmProt = (PGMROMPROT)u8Prot;
2842	AssertLogRelMsgReturn(enmProt > PGMROMPROT_INVALID && enmProt < PGMROMPROT_END, ("GCPhys=%RGp enmProt=%d\n", GCPhys, enmProt), VERR_PGM_SAVED_ROM_PAGE_PROT);
2843
2844	if (enmProt != pRomPage->enmProt)
2845	{
2846	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2847	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2848	N_("Protection change of unshadowed ROM page: GCPhys=%RGp enmProt=%d %s"),
2849	GCPhys, enmProt, pRom->pszDesc);
2850	rc = PGMR3PhysRomProtect(pVM, GCPhys, GUEST_PAGE_SIZE, enmProt);
2851	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2852	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2853	}
2854	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_ROM_PROT)
2855	break; /* done */
2856
2857	/*
2858	* Get the right page descriptor.
2859	*/
2860	PPGMPAGE pRealPage;
2861	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2862	{
2863	case PGM_STATE_REC_ROM_VIRGIN:
2864	if (!PGMROMPROT_IS_ROM(enmProt))
2865	pRealPage = &pRomPage->Virgin;
2866	else
2867	pRealPage = NULL;
2868	break;
2869
2870	case PGM_STATE_REC_ROM_SHW_RAW:
2871	case PGM_STATE_REC_ROM_SHW_ZERO:
2872	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2873	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2874	N_("Shadowed / non-shadowed page type mismatch: GCPhys=%RGp enmProt=%d %s"),
2875	GCPhys, enmProt, pRom->pszDesc);
2876	if (PGMROMPROT_IS_ROM(enmProt))
2877	pRealPage = &pRomPage->Shadow;
2878	else
2879	pRealPage = NULL;
2880	break;
2881
2882	default: AssertLogRelFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE); /* shut up gcc */
2883	}
2884	if (!pRealPage)
2885	{
2886	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pRealPage, &pRamHint);
2887	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2888	}
2889
2890	/*
2891	* Make it writable and map it (if necessary).
2892	*/
2893	void *pvDstPage = NULL;
2894	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2895	{
2896	case PGM_STATE_REC_ROM_SHW_ZERO:
2897	if ( PGM_PAGE_IS_ZERO(pRealPage)
2898	\|\| PGM_PAGE_IS_BALLOONED(pRealPage))
2899	break;
2900	/** @todo implement zero page replacing. */
2901	RT_FALL_THRU();
2902	case PGM_STATE_REC_ROM_VIRGIN:
2903	case PGM_STATE_REC_ROM_SHW_RAW:
2904	{
2905	rc = pgmPhysPageMakeWritableAndMap(pVM, pRealPage, GCPhys, &pvDstPage);
2906	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2907	break;
2908	}
2909	}
2910
2911	/*
2912	* Load the bits.
2913	*/
2914	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2915	{
2916	case PGM_STATE_REC_ROM_SHW_ZERO:
2917	if (pvDstPage)
2918	RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
2919	break;
2920
2921	case PGM_STATE_REC_ROM_VIRGIN:
2922	case PGM_STATE_REC_ROM_SHW_RAW:
2923	rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
2924	if (RT_FAILURE(rc))
2925	return rc;
2926	break;
2927	}
2928	GCPhys = NIL_RTGCPHYS;
2929	break;
2930	}
2931
2932	/*
2933	* Unknown type.
2934	*/
2935	default:
2936	AssertLogRelMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2937	}
2938	} /* forever */
2939	}
2940
2941
2942	/**
2943	* Worker for pgmR3Load.
2944	*
2945	* @returns VBox status code.
2946	*
2947	* @param pVM The cross context VM structure.
2948	* @param pSSM The SSM handle.
2949	* @param uVersion The saved state version.
2950	*/
2951	static int pgmR3LoadFinalLocked(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2952	{
2953	PPGM pPGM = &pVM->pgm.s;
2954	int rc;
2955	uint32_t u32Sep;
2956
2957	/*
2958	* Load basic data (required / unaffected by relocation).
2959	*/
2960	if (uVersion >= PGM_SAVED_STATE_VERSION_3_0_0)
2961	{
2962	if (uVersion > PGM_SAVED_STATE_VERSION_PRE_BALLOON)
2963	rc = SSMR3GetStructEx(pSSM, pPGM, sizeof(pPGM), 0 /fFlags/, &s_aPGMFields[0], NULL /pvUser*/);
2964	else
2965	rc = SSMR3GetStructEx(pSSM, pPGM, sizeof(pPGM), 0 /fFlags/, &s_aPGMFieldsPreBalloon[0], NULL /pvUser*/);
2966
2967	AssertLogRelRCReturn(rc, rc);
2968
2969	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2970	{
2971	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
2972	rc = SSMR3GetStruct(pSSM, &pVM->apCpusR3[i]->pgm.s, &s_aPGMCpuFieldsPrePae[0]);
2973	else
2974	rc = SSMR3GetStruct(pSSM, &pVM->apCpusR3[i]->pgm.s, &s_aPGMCpuFields[0]);
2975	AssertLogRelRCReturn(rc, rc);
2976	}
2977	}
2978	else if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2979	{
2980	AssertRelease(pVM->cCpus == 1);
2981
2982	PGMOLD pgmOld;
2983	rc = SSMR3GetStruct(pSSM, &pgmOld, &s_aPGMFields_Old[0]);
2984	AssertLogRelRCReturn(rc, rc);
2985
2986	PVMCPU pVCpu0 = pVM->apCpusR3[0];
2987	pVCpu0->pgm.s.fA20Enabled = pgmOld.fA20Enabled;
2988	pVCpu0->pgm.s.GCPhysA20Mask = pgmOld.GCPhysA20Mask;
2989	pVCpu0->pgm.s.enmGuestMode = pgmOld.enmGuestMode;
2990	}
2991	else
2992	{
2993	AssertRelease(pVM->cCpus == 1);
2994
2995	SSMR3Skip(pSSM, sizeof(bool));
2996	RTGCPTR GCPtrIgn;
2997	SSMR3GetGCPtr(pSSM, &GCPtrIgn);
2998	SSMR3Skip(pSSM, sizeof(uint32_t));
2999
3000	uint32_t cbRamSizeIgnored;
3001	rc = SSMR3GetU32(pSSM, &cbRamSizeIgnored);
3002	if (RT_FAILURE(rc))
3003	return rc;
3004	PVMCPU pVCpu0 = pVM->apCpusR3[0];
3005	SSMR3GetGCPhys(pSSM, &pVCpu0->pgm.s.GCPhysA20Mask);
3006
3007	uint32_t u32 = 0;
3008	SSMR3GetUInt(pSSM, &u32);
3009	pVCpu0->pgm.s.fA20Enabled = !!u32;
3010	SSMR3GetUInt(pSSM, &pVCpu0->pgm.s.fSyncFlags);
3011	RTUINT uGuestMode;
3012	SSMR3GetUInt(pSSM, &uGuestMode);
3013	pVCpu0->pgm.s.enmGuestMode = (PGMMODE)uGuestMode;
3014
3015	/* check separator. */
3016	SSMR3GetU32(pSSM, &u32Sep);
3017	if (RT_FAILURE(rc))
3018	return rc;
3019	if (u32Sep != (uint32_t)~0)
3020	{
3021	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
3022	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
3023	}
3024	}
3025
3026	/*
3027	* Fix the A20 mask.
3028	*/
3029	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3030	{
3031	PVMCPU pVCpu = pVM->apCpusR3[i];
3032	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
3033	pgmR3RefreshShadowModeAfterA20Change(pVCpu);
3034	}
3035
3036	/*
3037	* The guest mappings - skipped now, see re-fixation in the caller.
3038	*/
3039	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
3040	{
3041	for (uint32_t i = 0; ; i++)
3042	{
3043	rc = SSMR3GetU32(pSSM, &u32Sep); /* sequence number */
3044	if (RT_FAILURE(rc))
3045	return rc;
3046	if (u32Sep == ~0U)
3047	break;
3048	AssertMsgReturn(u32Sep == i, ("u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
3049
3050	char szDesc[256];
3051	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
3052	if (RT_FAILURE(rc))
3053	return rc;
3054	RTGCPTR GCPtrIgnore;
3055	SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* GCPtr */
3056	rc = SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* cPTs */
3057	if (RT_FAILURE(rc))
3058	return rc;
3059	}
3060	}
3061
3062	/*
3063	* Load the RAM contents.
3064	*/
3065	if (uVersion > PGM_SAVED_STATE_VERSION_3_0_0)
3066	{
3067	if (!pVM->pgm.s.LiveSave.fActive)
3068	{
3069	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3070	{
3071	rc = pgmR3LoadRamConfig(pVM, pSSM);
3072	if (RT_FAILURE(rc))
3073	return rc;
3074	}
3075	rc = pgmR3LoadRomRanges(pVM, pSSM);
3076	if (RT_FAILURE(rc))
3077	return rc;
3078	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3079	if (RT_FAILURE(rc))
3080	return rc;
3081	}
3082
3083	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, SSM_PASS_FINAL);
3084	}
3085	else
3086	rc = pgmR3LoadMemoryOld(pVM, pSSM, uVersion);
3087
3088	/* Refresh balloon accounting. */
3089	if (pVM->pgm.s.cBalloonedPages)
3090	{
3091	Log(("pgmR3LoadFinalLocked: pVM=%p cBalloonedPages=%#x\n", pVM, pVM->pgm.s.cBalloonedPages));
3092	rc = GMMR3BalloonedPages(pVM, GMMBALLOONACTION_INFLATE, pVM->pgm.s.cBalloonedPages);
3093	AssertRCReturn(rc, rc);
3094	}
3095	return rc;
3096	}
3097
3098
3099	/**
3100	* @callback_method_impl{FNSSMINTLOADEXEC}
3101	*/
3102	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
3103	{
3104	int rc;
3105
3106	/*
3107	* Validate version.
3108	*/
3109	if ( ( uPass != SSM_PASS_FINAL
3110	&& uVersion != PGM_SAVED_STATE_VERSION
3111	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3112	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3113	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3114	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3115	\|\| ( uVersion != PGM_SAVED_STATE_VERSION
3116	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3117	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3118	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3119	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG
3120	&& uVersion != PGM_SAVED_STATE_VERSION_3_0_0
3121	&& uVersion != PGM_SAVED_STATE_VERSION_2_2_2
3122	&& uVersion != PGM_SAVED_STATE_VERSION_RR_DESC
3123	&& uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
3124	)
3125	{
3126	AssertMsgFailed(("pgmR3Load: Invalid version uVersion=%d (current %d)!\n", uVersion, PGM_SAVED_STATE_VERSION));
3127	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3128	}
3129
3130	/*
3131	* Do the loading while owning the lock because a bunch of the functions
3132	* we're using requires this.
3133	*/
3134	if (uPass != SSM_PASS_FINAL)
3135	{
3136	PGM_LOCK_VOID(pVM);
3137	if (uPass != 0)
3138	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3139	else
3140	{
3141	pVM->pgm.s.LiveSave.fActive = true;
3142	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3143	rc = pgmR3LoadRamConfig(pVM, pSSM);
3144	else
3145	rc = VINF_SUCCESS;
3146	if (RT_SUCCESS(rc))
3147	rc = pgmR3LoadRomRanges(pVM, pSSM);
3148	if (RT_SUCCESS(rc))
3149	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3150	if (RT_SUCCESS(rc))
3151	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3152	}
3153	PGM_UNLOCK(pVM);
3154	}
3155	else
3156	{
3157	PGM_LOCK_VOID(pVM);
3158	rc = pgmR3LoadFinalLocked(pVM, pSSM, uVersion);
3159	pVM->pgm.s.LiveSave.fActive = false;
3160	PGM_UNLOCK(pVM);
3161	if (RT_SUCCESS(rc))
3162	{
3163	/*
3164	* We require a full resync now.
3165	*/
3166	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3167	{
3168	PVMCPU pVCpu = pVM->apCpusR3[i];
3169	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3170	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3171	/** @todo For guest PAE, we might get the wrong
3172	* aGCPhysGstPaePDs values now. We should used the
3173	* saved ones... Postponing this since it nothing new
3174	* and PAE/PDPTR needs some general readjusting, see
3175	* @bugref{5880}. */
3176	}
3177
3178	pgmR3HandlerPhysicalUpdateAll(pVM);
3179
3180	/*
3181	* Change the paging mode (indirectly restores PGMCPU::GCPhysCR3).
3182	* (Requires the CPUM state to be restored already!)
3183	*/
3184	if (CPUMR3IsStateRestorePending(pVM))
3185	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3186	N_("PGM was unexpectedly restored before CPUM"));
3187
3188	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3189	{
3190	PVMCPU pVCpu = pVM->apCpusR3[i];
3191
3192	rc = PGMHCChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode, false /* fForce */);
3193	AssertLogRelRCReturn(rc, rc);
3194
3195	/* Update the PSE, NX flags and validity masks. */
3196	pVCpu->pgm.s.fGst32BitPageSizeExtension = CPUMIsGuestPageSizeExtEnabled(pVCpu);
3197	PGMNotifyNxeChanged(pVCpu, CPUMIsGuestNXEnabled(pVCpu));
3198	}
3199	}
3200	}
3201
3202	return rc;
3203	}
3204
3205
3206	/**
3207	* @callback_method_impl{FNSSMINTLOADDONE}
3208	*/
3209	static DECLCALLBACK(int) pgmR3LoadDone(PVM pVM, PSSMHANDLE pSSM)
3210	{
3211	pVM->pgm.s.fRestoreRomPagesOnReset = true;
3212	NOREF(pSSM);
3213	return VINF_SUCCESS;
3214	}
3215
3216
3217	/**
3218	* Registers the saved state callbacks with SSM.
3219	*
3220	* @returns VBox status code.
3221	* @param pVM The cross context VM structure.
3222	* @param cbRam The RAM size.
3223	*/
3224	int pgmR3InitSavedState(PVM pVM, uint64_t cbRam)
3225	{
3226	return SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
3227	pgmR3LivePrep, pgmR3LiveExec, pgmR3LiveVote,
3228	NULL, pgmR3SaveExec, pgmR3SaveDone,
3229	pgmR3LoadPrep, pgmR3Load, pgmR3LoadDone);
3230	}
3231

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMSavedState.cpp@ 94249

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