PGMSavedState.cpp@ 52654

Last change on this file since 52654 was 47786, checked in by vboxsync, 11 years ago
PGM: Added a new page type for the VT-x APIC access page MMIO alias instead of abusing the MMIO2 aliasing. There are important differences, we can safely access the MMIO2 page when aliased and save time doing so, while the alias created by IOMMMIOMapMMIOHCPage must not be accessed outside the VT-x execution AFAIK.
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1	/* $Id: PGMSavedState.cpp 47786 2013-08-16 08:59:32Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor, The Saved State Part.
4	*/
5
6	/*
7	* Copyright (C) 2006-2012 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_PGM
23	#include <VBox/vmm/pgm.h>
24	#include <VBox/vmm/stam.h>
25	#include <VBox/vmm/ssm.h>
26	#include <VBox/vmm/pdmdrv.h>
27	#include <VBox/vmm/pdmdev.h>
28	#include "PGMInternal.h"
29	#include <VBox/vmm/vm.h>
30	#include "PGMInline.h"
31
32	#include <VBox/param.h>
33	#include <VBox/err.h>
34	#include <VBox/vmm/ftm.h>
35
36	#include <iprt/asm.h>
37	#include <iprt/assert.h>
38	#include <iprt/crc.h>
39	#include <iprt/mem.h>
40	#include <iprt/sha.h>
41	#include <iprt/string.h>
42	#include <iprt/thread.h>
43
44
45	/*******************************************************************************
46	* Defined Constants And Macros *
47	*******************************************************************************/
48	/** Saved state data unit version. */
49	#define PGM_SAVED_STATE_VERSION 14
50	/** Saved state data unit version before the PAE PDPE registers. */
51	#define PGM_SAVED_STATE_VERSION_PRE_PAE 13
52	/** Saved state data unit version after this includes ballooned page flags in
53	* the state (see @bugref{5515}). */
54	#define PGM_SAVED_STATE_VERSION_BALLOON_BROKEN 12
55	/** Saved state before the balloon change. */
56	#define PGM_SAVED_STATE_VERSION_PRE_BALLOON 11
57	/** Saved state data unit version used during 3.1 development, misses the RAM
58	* config. */
59	#define PGM_SAVED_STATE_VERSION_NO_RAM_CFG 10
60	/** Saved state data unit version for 3.0 (pre teleportation). */
61	#define PGM_SAVED_STATE_VERSION_3_0_0 9
62	/** Saved state data unit version for 2.2.2 and later. */
63	#define PGM_SAVED_STATE_VERSION_2_2_2 8
64	/** Saved state data unit version for 2.2.0. */
65	#define PGM_SAVED_STATE_VERSION_RR_DESC 7
66	/** Saved state data unit version. */
67	#define PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE 6
68
69
70	/** @name Sparse state record types
71	* @{ */
72	/** Zero page. No data. */
73	#define PGM_STATE_REC_RAM_ZERO UINT8_C(0x00)
74	/** Raw page. */
75	#define PGM_STATE_REC_RAM_RAW UINT8_C(0x01)
76	/** Raw MMIO2 page. */
77	#define PGM_STATE_REC_MMIO2_RAW UINT8_C(0x02)
78	/** Zero MMIO2 page. */
79	#define PGM_STATE_REC_MMIO2_ZERO UINT8_C(0x03)
80	/** Virgin ROM page. Followed by protection (8-bit) and the raw bits. */
81	#define PGM_STATE_REC_ROM_VIRGIN UINT8_C(0x04)
82	/** Raw shadowed ROM page. The protection (8-bit) precedes the raw bits. */
83	#define PGM_STATE_REC_ROM_SHW_RAW UINT8_C(0x05)
84	/** Zero shadowed ROM page. The protection (8-bit) is the only payload. */
85	#define PGM_STATE_REC_ROM_SHW_ZERO UINT8_C(0x06)
86	/** ROM protection (8-bit). */
87	#define PGM_STATE_REC_ROM_PROT UINT8_C(0x07)
88	/** Ballooned page. No data. */
89	#define PGM_STATE_REC_RAM_BALLOONED UINT8_C(0x08)
90	/** The last record type. */
91	#define PGM_STATE_REC_LAST PGM_STATE_REC_RAM_BALLOONED
92	/** End marker. */
93	#define PGM_STATE_REC_END UINT8_C(0xff)
94	/** Flag indicating that the data is preceded by the page address.
95	* For RAW pages this is a RTGCPHYS. For MMIO2 and ROM pages this is a 8-bit
96	* range ID and a 32-bit page index.
97	*/
98	#define PGM_STATE_REC_FLAG_ADDR UINT8_C(0x80)
99	/** @} */
100
101	/** The CRC-32 for a zero page. */
102	#define PGM_STATE_CRC32_ZERO_PAGE UINT32_C(0xc71c0011)
103	/** The CRC-32 for a zero half page. */
104	#define PGM_STATE_CRC32_ZERO_HALF_PAGE UINT32_C(0xf1e8ba9e)
105
106
107
108	/** @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( PGM, fMappingsFixed),
160	SSMFIELD_ENTRY_GCPTR( PGM, GCPtrMappingFixed),
161	SSMFIELD_ENTRY( PGM, cbMappingFixed),
162	SSMFIELD_ENTRY( PGM, cBalloonedPages),
163	SSMFIELD_ENTRY_TERM()
164	};
165
166	static const SSMFIELD s_aPGMFieldsPreBalloon[] =
167	{
168	SSMFIELD_ENTRY( PGM, fMappingsFixed),
169	SSMFIELD_ENTRY_GCPTR( PGM, GCPtrMappingFixed),
170	SSMFIELD_ENTRY( PGM, cbMappingFixed),
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 Pointer to the VM.
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 >> 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 Pointer to the VM.
233	*/
234	static int pgmR3PrepRomPages(PVM pVM)
235	{
236	/*
237	* Initialize the live save tracking in the ROM page descriptors.
238	*/
239	pgmLock(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 >> 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 << 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	pgmUnlock(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 Pointer to the VM.
284	* @param pSSM Saved state handle.
285	*/
286	static int pgmR3SaveRomRanges(PVM pVM, PSSMHANDLE pSSM)
287	{
288	pgmLock(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	pgmUnlock(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 Pointer to the VM.
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	AssertLogRelMsg(pRom->idSavedState != UINT8_MAX,
336	("The \"%s\" ROM was not found in the saved state. Probably due to some misconfiguration\n",
337	pRom->pszDesc));
338	return VINF_SUCCESS; /* the end */
339	}
340	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
341
342	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
343	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
344	AssertLogRelRCReturn(rc, rc);
345
346	uint32_t uInstance;
347	SSMR3GetU32(pSSM, &uInstance);
348	uint8_t iRegion;
349	SSMR3GetU8(pSSM, &iRegion);
350
351	char szDesc[64];
352	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
353	AssertLogRelRCReturn(rc, rc);
354
355	RTGCPHYS GCPhys;
356	SSMR3GetGCPhys(pSSM, &GCPhys);
357	RTGCPHYS cb;
358	rc = SSMR3GetGCPhys(pSSM, &cb);
359	if (RT_FAILURE(rc))
360	return rc;
361	AssertLogRelMsgReturn(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%RGp %s\n", GCPhys, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
362	AssertLogRelMsgReturn(!(cb & PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
363
364	/*
365	* Locate a matching ROM range.
366	*/
367	AssertLogRelMsgReturn( uInstance == 0
368	&& iRegion == 0
369	&& szDevName[0] == '\0',
370	("GCPhys=%RGp %s\n", GCPhys, szDesc),
371	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
372	PPGMROMRANGE pRom;
373	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
374	{
375	if ( pRom->idSavedState == UINT8_MAX
376	&& !strcmp(pRom->pszDesc, szDesc))
377	{
378	pRom->idSavedState = id;
379	break;
380	}
381	}
382	if (!pRom)
383	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("ROM at %RGp by the name '%s' was not found"), GCPhys, szDesc);
384	} /* forever */
385	}
386
387
388	/**
389	* Scan ROM pages.
390	*
391	* @param pVM Pointer to the VM.
392	*/
393	static void pgmR3ScanRomPages(PVM pVM)
394	{
395	/*
396	* The shadow ROMs.
397	*/
398	pgmLock(pVM);
399	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
400	{
401	if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
402	{
403	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
404	for (uint32_t iPage = 0; iPage < cPages; iPage++)
405	{
406	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
407	if (pRomPage->LiveSave.fWrittenTo)
408	{
409	pRomPage->LiveSave.fWrittenTo = false;
410	if (!pRomPage->LiveSave.fDirty)
411	{
412	pRomPage->LiveSave.fDirty = true;
413	pVM->pgm.s.LiveSave.Rom.cReadyPages--;
414	pVM->pgm.s.LiveSave.Rom.cDirtyPages++;
415	}
416	pRomPage->LiveSave.fDirtiedRecently = true;
417	}
418	else
419	pRomPage->LiveSave.fDirtiedRecently = false;
420	}
421	}
422	}
423	pgmUnlock(pVM);
424	}
425
426
427	/**
428	* Takes care of the virgin ROM pages in the first pass.
429	*
430	* This is an attempt at simplifying the handling of ROM pages a little bit.
431	* This ASSUMES that no new ROM ranges will be added and that they won't be
432	* relinked in any way.
433	*
434	* @param pVM Pointer to the VM.
435	* @param pSSM The SSM handle.
436	* @param fLiveSave Whether we're in a live save or not.
437	*/
438	static int pgmR3SaveRomVirginPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave)
439	{
440	if (FTMIsDeltaLoadSaveActive(pVM))
441	return VINF_SUCCESS; /* nothing to do as nothing has changed here */
442
443	pgmLock(pVM);
444	for (PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
445	{
446	uint32_t const cPages = pRom->cb >> PAGE_SHIFT;
447	for (uint32_t iPage = 0; iPage < cPages; iPage++)
448	{
449	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
450	PGMROMPROT enmProt = pRom->aPages[iPage].enmProt;
451
452	/* Get the virgin page descriptor. */
453	PPGMPAGE pPage;
454	if (PGMROMPROT_IS_ROM(enmProt))
455	pPage = pgmPhysGetPage(pVM, GCPhys);
456	else
457	pPage = &pRom->aPages[iPage].Virgin;
458
459	/* Get the page bits. (Cannot use pgmPhysGCPhys2CCPtrInternalReadOnly here!) */
460	int rc = VINF_SUCCESS;
461	char abPage[PAGE_SIZE];
462	if ( !PGM_PAGE_IS_ZERO(pPage)
463	&& !PGM_PAGE_IS_BALLOONED(pPage))
464	{
465	void const *pvPage;
466	rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
467	if (RT_SUCCESS(rc))
468	memcpy(abPage, pvPage, PAGE_SIZE);
469	}
470	else
471	ASMMemZeroPage(abPage);
472	pgmUnlock(pVM);
473	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
474
475	/* Save it. */
476	if (iPage > 0)
477	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN);
478	else
479	{
480	SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN \| PGM_STATE_REC_FLAG_ADDR);
481	SSMR3PutU8(pSSM, pRom->idSavedState);
482	SSMR3PutU32(pSSM, iPage);
483	}
484	SSMR3PutU8(pSSM, (uint8_t)enmProt);
485	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
486	if (RT_FAILURE(rc))
487	return rc;
488
489	/* Update state. */
490	pgmLock(pVM);
491	pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)enmProt;
492	if (fLiveSave)
493	{
494	pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
495	pVM->pgm.s.LiveSave.Rom.cReadyPages++;
496	pVM->pgm.s.LiveSave.cSavedPages++;
497	}
498	}
499	}
500	pgmUnlock(pVM);
501	return VINF_SUCCESS;
502	}
503
504
505	/**
506	* Saves dirty pages in the shadowed ROM ranges.
507	*
508	* Used by pgmR3LiveExecPart2 and pgmR3SaveExecMemory.
509	*
510	* @returns VBox status code.
511	* @param pVM Pointer to the VM.
512	* @param pSSM The SSM handle.
513	* @param fLiveSave Whether it's a live save or not.
514	* @param fFinalPass Whether this is the final pass or not.
515	*/
516	static int pgmR3SaveShadowedRomPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, bool fFinalPass)
517	{
518	if (FTMIsDeltaLoadSaveActive(pVM))
519	return VINF_SUCCESS; /* nothing to do as we deal with those pages separately */
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	pgmLock(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 >> 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[PAGE_SIZE];
547	PGMROMPROT enmProt = pRomPage->enmProt;
548	RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << 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, 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	pgmUnlock(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, PAGE_SIZE);
581	if (RT_FAILURE(rc))
582	return rc;
583
584	pgmLock(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	pgmUnlock(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	pgmLock(pVM);
610	iPrevPage = iPage;
611	}
612	}
613	}
614	}
615	pgmUnlock(pVM);
616	return VINF_SUCCESS;
617	}
618
619
620	/**
621	* Cleans up ROM pages after a live save.
622	*
623	* @param pVM Pointer to the VM.
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 Pointer to the VM.
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	pgmLock(pVM);
644	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
645	{
646	uint32_t const cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
647	pgmUnlock(pVM);
648
649	PPGMLIVESAVEMMIO2PAGE paLSPages = (PPGMLIVESAVEMMIO2PAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMLIVESAVEMMIO2PAGE) * cPages);
650	if (!paLSPages)
651	return VERR_NO_MEMORY;
652	for (uint32_t iPage = 0; iPage < cPages; iPage++)
653	{
654	/* Initialize it as a dirty zero page. */
655	paLSPages[iPage].fDirty = true;
656	paLSPages[iPage].cUnchangedScans = 0;
657	paLSPages[iPage].fZero = true;
658	paLSPages[iPage].u32CrcH1 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
659	paLSPages[iPage].u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
660	}
661
662	pgmLock(pVM);
663	pMmio2->paLSPages = paLSPages;
664	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages += cPages;
665	}
666	pgmUnlock(pVM);
667	return VINF_SUCCESS;
668	}
669
670
671	/**
672	* Assigns IDs to the MMIO2 ranges and saves them.
673	*
674	* @returns VBox status code.
675	* @param pVM Pointer to the VM.
676	* @param pSSM Saved state handle.
677	*/
678	static int pgmR3SaveMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
679	{
680	pgmLock(pVM);
681	uint8_t id = 1;
682	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3, id++)
683	{
684	pMmio2->idSavedState = id;
685	SSMR3PutU8(pSSM, id);
686	SSMR3PutStrZ(pSSM, pMmio2->pDevInsR3->pReg->szName);
687	SSMR3PutU32(pSSM, pMmio2->pDevInsR3->iInstance);
688	SSMR3PutU8(pSSM, pMmio2->iRegion);
689	SSMR3PutStrZ(pSSM, pMmio2->RamRange.pszDesc);
690	int rc = SSMR3PutGCPhys(pSSM, pMmio2->RamRange.cb);
691	if (RT_FAILURE(rc))
692	break;
693	}
694	pgmUnlock(pVM);
695	return SSMR3PutU8(pSSM, UINT8_MAX);
696	}
697
698
699	/**
700	* Loads the MMIO2 range ID assignments.
701	*
702	* @returns VBox status code.
703	*
704	* @param pVM Pointer to the VM.
705	* @param pSSM The saved state handle.
706	*/
707	static int pgmR3LoadMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
708	{
709	PGM_LOCK_ASSERT_OWNER(pVM);
710
711	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
712	pMmio2->idSavedState = UINT8_MAX;
713
714	for (;;)
715	{
716	/*
717	* Read the data.
718	*/
719	uint8_t id;
720	int rc = SSMR3GetU8(pSSM, &id);
721	if (RT_FAILURE(rc))
722	return rc;
723	if (id == UINT8_MAX)
724	{
725	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
726	AssertLogRelMsg(pMmio2->idSavedState != UINT8_MAX, ("%s\n", pMmio2->RamRange.pszDesc));
727	return VINF_SUCCESS; /* the end */
728	}
729	AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
730
731	char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
732	rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
733	AssertLogRelRCReturn(rc, rc);
734
735	uint32_t uInstance;
736	SSMR3GetU32(pSSM, &uInstance);
737	uint8_t iRegion;
738	SSMR3GetU8(pSSM, &iRegion);
739
740	char szDesc[64];
741	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
742	AssertLogRelRCReturn(rc, rc);
743
744	RTGCPHYS cb;
745	rc = SSMR3GetGCPhys(pSSM, &cb);
746	AssertLogRelMsgReturn(!(cb & PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
747
748	/*
749	* Locate a matching MMIO2 range.
750	*/
751	PPGMMMIO2RANGE pMmio2;
752	for (pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
753	{
754	if ( pMmio2->idSavedState == UINT8_MAX
755	&& pMmio2->iRegion == iRegion
756	&& pMmio2->pDevInsR3->iInstance == uInstance
757	&& !strcmp(pMmio2->pDevInsR3->pReg->szName, szDevName))
758	{
759	pMmio2->idSavedState = id;
760	break;
761	}
762	}
763	if (!pMmio2)
764	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to locate a MMIO2 range called '%s' owned by %s/%u, region %d"),
765	szDesc, szDevName, uInstance, iRegion);
766
767	/*
768	* Validate the configuration, the size of the MMIO2 region should be
769	* the same.
770	*/
771	if (cb != pMmio2->RamRange.cb)
772	{
773	LogRel(("PGM: MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp\n",
774	pMmio2->RamRange.pszDesc, cb, pMmio2->RamRange.cb));
775	if (cb > pMmio2->RamRange.cb) /* bad idea? */
776	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp"),
777	pMmio2->RamRange.pszDesc, cb, pMmio2->RamRange.cb);
778	}
779	} /* forever */
780	}
781
782
783	/**
784	* Scans one MMIO2 page.
785	*
786	* @returns True if changed, false if unchanged.
787	*
788	* @param pVM Pointer to the VM.
789	* @param pbPage The page bits.
790	* @param pLSPage The live save tracking structure for the page.
791	*
792	*/
793	DECLINLINE(bool) pgmR3ScanMmio2Page(PVM pVM, uint8_t const *pbPage, PPGMLIVESAVEMMIO2PAGE pLSPage)
794	{
795	/*
796	* Special handling of zero pages.
797	*/
798	bool const fZero = pLSPage->fZero;
799	if (fZero)
800	{
801	if (ASMMemIsZeroPage(pbPage))
802	{
803	/* Not modified. */
804	if (pLSPage->fDirty)
805	pLSPage->cUnchangedScans++;
806	return false;
807	}
808
809	pLSPage->fZero = false;
810	pLSPage->u32CrcH1 = RTCrc32(pbPage, PAGE_SIZE / 2);
811	}
812	else
813	{
814	/*
815	* CRC the first half, if it doesn't match the page is dirty and
816	* we won't check the 2nd half (we'll do that next time).
817	*/
818	uint32_t u32CrcH1 = RTCrc32(pbPage, PAGE_SIZE / 2);
819	if (u32CrcH1 == pLSPage->u32CrcH1)
820	{
821	uint32_t u32CrcH2 = RTCrc32(pbPage + PAGE_SIZE / 2, PAGE_SIZE / 2);
822	if (u32CrcH2 == pLSPage->u32CrcH2)
823	{
824	/* Probably not modified. */
825	if (pLSPage->fDirty)
826	pLSPage->cUnchangedScans++;
827	return false;
828	}
829
830	pLSPage->u32CrcH2 = u32CrcH2;
831	}
832	else
833	{
834	pLSPage->u32CrcH1 = u32CrcH1;
835	if ( u32CrcH1 == PGM_STATE_CRC32_ZERO_HALF_PAGE
836	&& ASMMemIsZeroPage(pbPage))
837	{
838	pLSPage->u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
839	pLSPage->fZero = true;
840	}
841	}
842	}
843
844	/* dirty page path */
845	pLSPage->cUnchangedScans = 0;
846	if (!pLSPage->fDirty)
847	{
848	pLSPage->fDirty = true;
849	pVM->pgm.s.LiveSave.Mmio2.cReadyPages--;
850	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages++;
851	if (fZero)
852	pVM->pgm.s.LiveSave.Mmio2.cZeroPages--;
853	}
854	return true;
855	}
856
857
858	/**
859	* Scan for MMIO2 page modifications.
860	*
861	* @param pVM Pointer to the VM.
862	* @param uPass The pass number.
863	*/
864	static void pgmR3ScanMmio2Pages(PVM pVM, uint32_t uPass)
865	{
866	/*
867	* Since this is a bit expensive we lower the scan rate after a little while.
868	*/
869	if ( ( (uPass & 3) != 0
870	&& uPass > 10)
871	\|\| uPass == SSM_PASS_FINAL)
872	return;
873
874	pgmLock(pVM); /* paranoia */
875	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
876	{
877	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
878	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
879	pgmUnlock(pVM);
880
881	for (uint32_t iPage = 0; iPage < cPages; iPage++)
882	{
883	uint8_t const pbPage = (uint8_t const )pMmio2->pvR3 + iPage * PAGE_SIZE;
884	pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]);
885	}
886
887	pgmLock(pVM);
888	}
889	pgmUnlock(pVM);
890
891	}
892
893
894	/**
895	* Save quiescent MMIO2 pages.
896	*
897	* @returns VBox status code.
898	* @param pVM Pointer to the VM.
899	* @param pSSM The SSM handle.
900	* @param fLiveSave Whether it's a live save or not.
901	* @param uPass The pass number.
902	*/
903	static int pgmR3SaveMmio2Pages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
904	{
905	/** @todo implement live saving of MMIO2 pages. (Need some way of telling the
906	* device that we wish to know about changes.) */
907
908	int rc = VINF_SUCCESS;
909	if (uPass == SSM_PASS_FINAL)
910	{
911	/*
912	* The mop up round.
913	*/
914	pgmLock(pVM);
915	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3;
916	pMmio2 && RT_SUCCESS(rc);
917	pMmio2 = pMmio2->pNextR3)
918	{
919	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
920	uint8_t const pbPage = (uint8_t const )pMmio2->RamRange.pvR3;
921	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
922	uint32_t iPageLast = cPages;
923	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += PAGE_SIZE)
924	{
925	uint8_t u8Type;
926	if (!fLiveSave)
927	u8Type = ASMMemIsZeroPage(pbPage) ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
928	else
929	{
930	/* Try figure if it's a clean page, compare the SHA-1 to be really sure. */
931	if ( !paLSPages[iPage].fDirty
932	&& !pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
933	{
934	if (paLSPages[iPage].fZero)
935	continue;
936
937	uint8_t abSha1Hash[RTSHA1_HASH_SIZE];
938	RTSha1(pbPage, PAGE_SIZE, abSha1Hash);
939	if (!memcmp(abSha1Hash, paLSPages[iPage].abSha1Saved, sizeof(abSha1Hash)))
940	continue;
941	}
942	u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
943	pVM->pgm.s.LiveSave.cSavedPages++;
944	}
945
946	if (iPage != 0 && iPage == iPageLast + 1)
947	rc = SSMR3PutU8(pSSM, u8Type);
948	else
949	{
950	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
951	SSMR3PutU8(pSSM, pMmio2->idSavedState);
952	rc = SSMR3PutU32(pSSM, iPage);
953	}
954	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
955	rc = SSMR3PutMem(pSSM, pbPage, PAGE_SIZE);
956	if (RT_FAILURE(rc))
957	break;
958	iPageLast = iPage;
959	}
960	}
961	pgmUnlock(pVM);
962	}
963	/*
964	* Reduce the rate after a little while since the current MMIO2 approach is
965	* a bit expensive.
966	* We position it two passes after the scan pass to avoid saving busy pages.
967	*/
968	else if ( uPass <= 10
969	\|\| (uPass & 3) == 2)
970	{
971	pgmLock(pVM);
972	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3;
973	pMmio2 && RT_SUCCESS(rc);
974	pMmio2 = pMmio2->pNextR3)
975	{
976	PPGMLIVESAVEMMIO2PAGE paLSPages = pMmio2->paLSPages;
977	uint8_t const pbPage = (uint8_t const )pMmio2->RamRange.pvR3;
978	uint32_t cPages = pMmio2->RamRange.cb >> PAGE_SHIFT;
979	uint32_t iPageLast = cPages;
980	pgmUnlock(pVM);
981
982	for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += PAGE_SIZE)
983	{
984	/* Skip clean pages and pages which hasn't quiesced. */
985	if (!paLSPages[iPage].fDirty)
986	continue;
987	if (paLSPages[iPage].cUnchangedScans < 3)
988	continue;
989	if (pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
990	continue;
991
992	/* Save it. */
993	bool const fZero = paLSPages[iPage].fZero;
994	uint8_t abPage[PAGE_SIZE];
995	if (!fZero)
996	{
997	memcpy(abPage, pbPage, PAGE_SIZE);
998	RTSha1(abPage, PAGE_SIZE, paLSPages[iPage].abSha1Saved);
999	}
1000
1001	uint8_t u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
1002	if (iPage != 0 && iPage == iPageLast + 1)
1003	rc = SSMR3PutU8(pSSM, u8Type);
1004	else
1005	{
1006	SSMR3PutU8(pSSM, u8Type \| PGM_STATE_REC_FLAG_ADDR);
1007	SSMR3PutU8(pSSM, pMmio2->idSavedState);
1008	rc = SSMR3PutU32(pSSM, iPage);
1009	}
1010	if (u8Type == PGM_STATE_REC_MMIO2_RAW)
1011	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
1012	if (RT_FAILURE(rc))
1013	break;
1014
1015	/* Housekeeping. */
1016	paLSPages[iPage].fDirty = false;
1017	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages--;
1018	pVM->pgm.s.LiveSave.Mmio2.cReadyPages++;
1019	if (u8Type == PGM_STATE_REC_MMIO2_ZERO)
1020	pVM->pgm.s.LiveSave.Mmio2.cZeroPages++;
1021	pVM->pgm.s.LiveSave.cSavedPages++;
1022	iPageLast = iPage;
1023	}
1024
1025	pgmLock(pVM);
1026	}
1027	pgmUnlock(pVM);
1028	}
1029
1030	return rc;
1031	}
1032
1033
1034	/**
1035	* Cleans up MMIO2 pages after a live save.
1036	*
1037	* @param pVM Pointer to the VM.
1038	*/
1039	static void pgmR3DoneMmio2Pages(PVM pVM)
1040	{
1041	/*
1042	* Free the tracking structures for the MMIO2 pages.
1043	* We do the freeing outside the lock in case the VM is running.
1044	*/
1045	pgmLock(pVM);
1046	for (PPGMMMIO2RANGE pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
1047	{
1048	void *pvMmio2ToFree = pMmio2->paLSPages;
1049	if (pvMmio2ToFree)
1050	{
1051	pMmio2->paLSPages = NULL;
1052	pgmUnlock(pVM);
1053	MMR3HeapFree(pvMmio2ToFree);
1054	pgmLock(pVM);
1055	}
1056	}
1057	pgmUnlock(pVM);
1058	}
1059
1060
1061	/**
1062	* Prepares the RAM pages for a live save.
1063	*
1064	* @returns VBox status code.
1065	* @param pVM Pointer to the VM.
1066	*/
1067	static int pgmR3PrepRamPages(PVM pVM)
1068	{
1069
1070	/*
1071	* Try allocating tracking structures for the ram ranges.
1072	*
1073	* To avoid lock contention, we leave the lock every time we're allocating
1074	* a new array. This means we'll have to ditch the allocation and start
1075	* all over again if the RAM range list changes in-between.
1076	*
1077	* Note! pgmR3SaveDone will always be called and it is therefore responsible
1078	* for cleaning up.
1079	*/
1080	PPGMRAMRANGE pCur;
1081	pgmLock(pVM);
1082	do
1083	{
1084	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1085	{
1086	if ( !pCur->paLSPages
1087	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1088	{
1089	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1090	uint32_t const cPages = pCur->cb >> PAGE_SHIFT;
1091	pgmUnlock(pVM);
1092	PPGMLIVESAVERAMPAGE paLSPages = (PPGMLIVESAVERAMPAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, cPages * sizeof(PGMLIVESAVERAMPAGE));
1093	if (!paLSPages)
1094	return VERR_NO_MEMORY;
1095	pgmLock(pVM);
1096	if (pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1097	{
1098	pgmUnlock(pVM);
1099	MMR3HeapFree(paLSPages);
1100	pgmLock(pVM);
1101	break; /* try again */
1102	}
1103	pCur->paLSPages = paLSPages;
1104
1105	/*
1106	* Initialize the array.
1107	*/
1108	uint32_t iPage = cPages;
1109	while (iPage-- > 0)
1110	{
1111	/** @todo yield critsect! (after moving this away from EMT0) */
1112	PCPGMPAGE pPage = &pCur->aPages[iPage];
1113	paLSPages[iPage].cDirtied = 0;
1114	paLSPages[iPage].fDirty = 1; /* everything is dirty at this time */
1115	paLSPages[iPage].fWriteMonitored = 0;
1116	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1117	paLSPages[iPage].u2Reserved = 0;
1118	switch (PGM_PAGE_GET_TYPE(pPage))
1119	{
1120	case PGMPAGETYPE_RAM:
1121	if ( PGM_PAGE_IS_ZERO(pPage)
1122	\|\| PGM_PAGE_IS_BALLOONED(pPage))
1123	{
1124	paLSPages[iPage].fZero = 1;
1125	paLSPages[iPage].fShared = 0;
1126	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1127	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1128	#endif
1129	}
1130	else if (PGM_PAGE_IS_SHARED(pPage))
1131	{
1132	paLSPages[iPage].fZero = 0;
1133	paLSPages[iPage].fShared = 1;
1134	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1135	paLSPages[iPage].u32Crc = UINT32_MAX;
1136	#endif
1137	}
1138	else
1139	{
1140	paLSPages[iPage].fZero = 0;
1141	paLSPages[iPage].fShared = 0;
1142	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1143	paLSPages[iPage].u32Crc = UINT32_MAX;
1144	#endif
1145	}
1146	paLSPages[iPage].fIgnore = 0;
1147	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1148	break;
1149
1150	case PGMPAGETYPE_ROM_SHADOW:
1151	case PGMPAGETYPE_ROM:
1152	{
1153	paLSPages[iPage].fZero = 0;
1154	paLSPages[iPage].fShared = 0;
1155	paLSPages[iPage].fDirty = 0;
1156	paLSPages[iPage].fIgnore = 1;
1157	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1158	paLSPages[iPage].u32Crc = UINT32_MAX;
1159	#endif
1160	pVM->pgm.s.LiveSave.cIgnoredPages++;
1161	break;
1162	}
1163
1164	default:
1165	AssertMsgFailed(("%R[pgmpage]", pPage));
1166	case PGMPAGETYPE_MMIO2:
1167	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
1168	paLSPages[iPage].fZero = 0;
1169	paLSPages[iPage].fShared = 0;
1170	paLSPages[iPage].fDirty = 0;
1171	paLSPages[iPage].fIgnore = 1;
1172	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1173	paLSPages[iPage].u32Crc = UINT32_MAX;
1174	#endif
1175	pVM->pgm.s.LiveSave.cIgnoredPages++;
1176	break;
1177
1178	case PGMPAGETYPE_MMIO:
1179	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
1180	paLSPages[iPage].fZero = 0;
1181	paLSPages[iPage].fShared = 0;
1182	paLSPages[iPage].fDirty = 0;
1183	paLSPages[iPage].fIgnore = 1;
1184	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1185	paLSPages[iPage].u32Crc = UINT32_MAX;
1186	#endif
1187	pVM->pgm.s.LiveSave.cIgnoredPages++;
1188	break;
1189	}
1190	}
1191	}
1192	}
1193	} while (pCur);
1194	pgmUnlock(pVM);
1195
1196	return VINF_SUCCESS;
1197	}
1198
1199
1200	/**
1201	* Saves the RAM configuration.
1202	*
1203	* @returns VBox status code.
1204	* @param pVM Pointer to the VM.
1205	* @param pSSM The saved state handle.
1206	*/
1207	static int pgmR3SaveRamConfig(PVM pVM, PSSMHANDLE pSSM)
1208	{
1209	uint32_t cbRamHole = 0;
1210	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
1211	AssertRCReturn(rc, rc);
1212
1213	uint64_t cbRam = 0;
1214	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0);
1215	AssertRCReturn(rc, rc);
1216
1217	SSMR3PutU32(pSSM, cbRamHole);
1218	return SSMR3PutU64(pSSM, cbRam);
1219	}
1220
1221
1222	/**
1223	* Loads and verifies the RAM configuration.
1224	*
1225	* @returns VBox status code.
1226	* @param pVM Pointer to the VM.
1227	* @param pSSM The saved state handle.
1228	*/
1229	static int pgmR3LoadRamConfig(PVM pVM, PSSMHANDLE pSSM)
1230	{
1231	uint32_t cbRamHoleCfg = 0;
1232	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHoleCfg, MM_RAM_HOLE_SIZE_DEFAULT);
1233	AssertRCReturn(rc, rc);
1234
1235	uint64_t cbRamCfg = 0;
1236	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRamCfg, 0);
1237	AssertRCReturn(rc, rc);
1238
1239	uint32_t cbRamHoleSaved;
1240	SSMR3GetU32(pSSM, &cbRamHoleSaved);
1241
1242	uint64_t cbRamSaved;
1243	rc = SSMR3GetU64(pSSM, &cbRamSaved);
1244	AssertRCReturn(rc, rc);
1245
1246	if ( cbRamHoleCfg != cbRamHoleSaved
1247	\|\| cbRamCfg != cbRamSaved)
1248	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Ram config mismatch: saved=%RX64/%RX32 config=%RX64/%RX32 (RAM/Hole)"),
1249	cbRamSaved, cbRamHoleSaved, cbRamCfg, cbRamHoleCfg);
1250	return VINF_SUCCESS;
1251	}
1252
1253	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1254
1255	/**
1256	* Calculates the CRC-32 for a RAM page and updates the live save page tracking
1257	* info with it.
1258	*
1259	* @param pVM Pointer to the VM.
1260	* @param pCur The current RAM range.
1261	* @param paLSPages The current array of live save page tracking
1262	* structures.
1263	* @param iPage The page index.
1264	*/
1265	static void pgmR3StateCalcCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage)
1266	{
1267	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1268	PGMPAGEMAPLOCK PgMpLck;
1269	void const *pvPage;
1270	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1271	if (RT_SUCCESS(rc))
1272	{
1273	paLSPages[iPage].u32Crc = RTCrc32(pvPage, PAGE_SIZE);
1274	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1275	}
1276	else
1277	paLSPages[iPage].u32Crc = UINT32_MAX; /* Invalid */
1278	}
1279
1280
1281	/**
1282	* Verifies the CRC-32 for a page given it's raw bits.
1283	*
1284	* @param pvPage The page bits.
1285	* @param pCur The current RAM range.
1286	* @param paLSPages The current array of live save page tracking
1287	* structures.
1288	* @param iPage The page index.
1289	*/
1290	static void pgmR3StateVerifyCrc32ForPage(void const pvPage, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char pszWhere)
1291	{
1292	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1293	{
1294	uint32_t u32Crc = RTCrc32(pvPage, PAGE_SIZE);
1295	Assert( ( !PGM_PAGE_IS_ZERO(&pCur->aPages[iPage])
1296	&& !PGM_PAGE_IS_BALLOONED(&pCur->aPages[iPage]))
1297	\|\| u32Crc == PGM_STATE_CRC32_ZERO_PAGE);
1298	AssertMsg(paLSPages[iPage].u32Crc == u32Crc,
1299	("%08x != %08x for %RGp %R[pgmpage] %s\n", paLSPages[iPage].u32Crc, u32Crc,
1300	pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage], pszWhere));
1301	}
1302	}
1303
1304
1305	/**
1306	* Verifies the CRC-32 for a RAM page.
1307	*
1308	* @param pVM Pointer to the VM.
1309	* @param pCur The current RAM range.
1310	* @param paLSPages The current array of live save page tracking
1311	* structures.
1312	* @param iPage The page index.
1313	*/
1314	static void pgmR3StateVerifyCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char *pszWhere)
1315	{
1316	if (paLSPages[iPage].u32Crc != UINT32_MAX)
1317	{
1318	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1319	PGMPAGEMAPLOCK PgMpLck;
1320	void const *pvPage;
1321	int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
1322	if (RT_SUCCESS(rc))
1323	{
1324	pgmR3StateVerifyCrc32ForPage(pvPage, pCur, paLSPages, iPage, pszWhere);
1325	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1326	}
1327	}
1328	}
1329
1330	#endif /* PGMLIVESAVERAMPAGE_WITH_CRC32 */
1331
1332	/**
1333	* Scan for RAM page modifications and reprotect them.
1334	*
1335	* @param pVM Pointer to the VM.
1336	* @param fFinalPass Whether this is the final pass or not.
1337	*/
1338	static void pgmR3ScanRamPages(PVM pVM, bool fFinalPass)
1339	{
1340	/*
1341	* The RAM.
1342	*/
1343	RTGCPHYS GCPhysCur = 0;
1344	PPGMRAMRANGE pCur;
1345	pgmLock(pVM);
1346	do
1347	{
1348	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1349	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1350	{
1351	if ( pCur->GCPhysLast > GCPhysCur
1352	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1353	{
1354	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1355	uint32_t cPages = pCur->cb >> PAGE_SHIFT;
1356	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> PAGE_SHIFT;
1357	GCPhysCur = 0;
1358	for (; iPage < cPages; iPage++)
1359	{
1360	/* Do yield first. */
1361	if ( !fFinalPass
1362	#ifndef PGMLIVESAVERAMPAGE_WITH_CRC32
1363	&& (iPage & 0x7ff) == 0x100
1364	#endif
1365	&& PDMR3CritSectYield(&pVM->pgm.s.CritSectX)
1366	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1367	{
1368	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1369	break; /* restart */
1370	}
1371
1372	/* Skip already ignored pages. */
1373	if (paLSPages[iPage].fIgnore)
1374	continue;
1375
1376	if (RT_LIKELY(PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]) == PGMPAGETYPE_RAM))
1377	{
1378	/*
1379	* A RAM page.
1380	*/
1381	switch (PGM_PAGE_GET_STATE(&pCur->aPages[iPage]))
1382	{
1383	case PGM_PAGE_STATE_ALLOCATED:
1384	/** @todo Optimize this: Don't always re-enable write
1385	* monitoring if the page is known to be very busy. */
1386	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1387	{
1388	AssertMsg(paLSPages[iPage].fWriteMonitored,
1389	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage]));
1390	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1391	Assert(pVM->pgm.s.cWrittenToPages > 0);
1392	pVM->pgm.s.cWrittenToPages--;
1393	}
1394	else
1395	{
1396	AssertMsg(!paLSPages[iPage].fWriteMonitored,
1397	("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT), &pCur->aPages[iPage]));
1398	pVM->pgm.s.LiveSave.Ram.cMonitoredPages++;
1399	}
1400
1401	if (!paLSPages[iPage].fDirty)
1402	{
1403	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1404	if (paLSPages[iPage].fZero)
1405	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1406	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1407	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1408	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1409	}
1410
1411	pgmPhysPageWriteMonitor(pVM, &pCur->aPages[iPage],
1412	pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT));
1413	paLSPages[iPage].fWriteMonitored = 1;
1414	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1415	paLSPages[iPage].fDirty = 1;
1416	paLSPages[iPage].fZero = 0;
1417	paLSPages[iPage].fShared = 0;
1418	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1419	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1420	#endif
1421	break;
1422
1423	case PGM_PAGE_STATE_WRITE_MONITORED:
1424	Assert(paLSPages[iPage].fWriteMonitored);
1425	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) == 0)
1426	{
1427	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1428	if (paLSPages[iPage].fWriteMonitoredJustNow)
1429	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1430	else
1431	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "scan");
1432	#endif
1433	paLSPages[iPage].fWriteMonitoredJustNow = 0;
1434	}
1435	else
1436	{
1437	paLSPages[iPage].fWriteMonitoredJustNow = 1;
1438	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1439	paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
1440	#endif
1441	if (!paLSPages[iPage].fDirty)
1442	{
1443	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1444	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1445	if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
1446	paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
1447	}
1448	}
1449	break;
1450
1451	case PGM_PAGE_STATE_ZERO:
1452	case PGM_PAGE_STATE_BALLOONED:
1453	if (!paLSPages[iPage].fZero)
1454	{
1455	if (!paLSPages[iPage].fDirty)
1456	{
1457	paLSPages[iPage].fDirty = 1;
1458	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1459	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1460	}
1461	paLSPages[iPage].fZero = 1;
1462	paLSPages[iPage].fShared = 0;
1463	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1464	paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
1465	#endif
1466	}
1467	break;
1468
1469	case PGM_PAGE_STATE_SHARED:
1470	if (!paLSPages[iPage].fShared)
1471	{
1472	if (!paLSPages[iPage].fDirty)
1473	{
1474	paLSPages[iPage].fDirty = 1;
1475	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1476	if (paLSPages[iPage].fZero)
1477	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1478	pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
1479	}
1480	paLSPages[iPage].fZero = 0;
1481	paLSPages[iPage].fShared = 1;
1482	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1483	pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
1484	#endif
1485	}
1486	break;
1487	}
1488	}
1489	else
1490	{
1491	/*
1492	* All other types => Ignore the page.
1493	*/
1494	Assert(!paLSPages[iPage].fIgnore); /* skipped before switch */
1495	paLSPages[iPage].fIgnore = 1;
1496	if (paLSPages[iPage].fWriteMonitored)
1497	{
1498	/** @todo this doesn't hold water when we start monitoring MMIO2 and ROM shadow
1499	* pages! */
1500	if (RT_UNLIKELY(PGM_PAGE_GET_STATE(&pCur->aPages[iPage]) == PGM_PAGE_STATE_WRITE_MONITORED))
1501	{
1502	AssertMsgFailed(("%R[pgmpage]", &pCur->aPages[iPage])); /* shouldn't happen. */
1503	PGM_PAGE_SET_STATE(pVM, &pCur->aPages[iPage], PGM_PAGE_STATE_ALLOCATED);
1504	Assert(pVM->pgm.s.cMonitoredPages > 0);
1505	pVM->pgm.s.cMonitoredPages--;
1506	}
1507	if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
1508	{
1509	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
1510	Assert(pVM->pgm.s.cWrittenToPages > 0);
1511	pVM->pgm.s.cWrittenToPages--;
1512	}
1513	pVM->pgm.s.LiveSave.Ram.cMonitoredPages--;
1514	}
1515
1516	/** @todo the counting doesn't quite work out here. fix later? */
1517	if (paLSPages[iPage].fDirty)
1518	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1519	else
1520	{
1521	pVM->pgm.s.LiveSave.Ram.cReadyPages--;
1522	if (paLSPages[iPage].fZero)
1523	pVM->pgm.s.LiveSave.Ram.cZeroPages--;
1524	}
1525	pVM->pgm.s.LiveSave.cIgnoredPages++;
1526	}
1527	} /* for each page in range */
1528
1529	if (GCPhysCur != 0)
1530	break; /* Yield + ramrange change */
1531	GCPhysCur = pCur->GCPhysLast;
1532	}
1533	} /* for each range */
1534	} while (pCur);
1535	pgmUnlock(pVM);
1536	}
1537
1538
1539	/**
1540	* Save quiescent RAM pages.
1541	*
1542	* @returns VBox status code.
1543	* @param pVM Pointer to the VM.
1544	* @param pSSM The SSM handle.
1545	* @param fLiveSave Whether it's a live save or not.
1546	* @param uPass The pass number.
1547	*/
1548	static int pgmR3SaveRamPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
1549	{
1550	NOREF(fLiveSave);
1551
1552	/*
1553	* The RAM.
1554	*/
1555	RTGCPHYS GCPhysLast = NIL_RTGCPHYS;
1556	RTGCPHYS GCPhysCur = 0;
1557	PPGMRAMRANGE pCur;
1558	bool fFTMDeltaSaveActive = FTMIsDeltaLoadSaveActive(pVM);
1559
1560	pgmLock(pVM);
1561	do
1562	{
1563	uint32_t const idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1564	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1565	{
1566	if ( pCur->GCPhysLast > GCPhysCur
1567	&& !PGM_RAM_RANGE_IS_AD_HOC(pCur))
1568	{
1569	PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
1570	uint32_t cPages = pCur->cb >> PAGE_SHIFT;
1571	uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> PAGE_SHIFT;
1572	GCPhysCur = 0;
1573	for (; iPage < cPages; iPage++)
1574	{
1575	/* Do yield first. */
1576	if ( uPass != SSM_PASS_FINAL
1577	&& (iPage & 0x7ff) == 0x100
1578	&& PDMR3CritSectYield(&pVM->pgm.s.CritSectX)
1579	&& pVM->pgm.s.idRamRangesGen != idRamRangesGen)
1580	{
1581	GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1582	break; /* restart */
1583	}
1584
1585	PPGMPAGE pCurPage = &pCur->aPages[iPage];
1586
1587	/*
1588	* Only save pages that haven't changed since last scan and are dirty.
1589	*/
1590	if ( uPass != SSM_PASS_FINAL
1591	&& paLSPages)
1592	{
1593	if (!paLSPages[iPage].fDirty)
1594	continue;
1595	if (paLSPages[iPage].fWriteMonitoredJustNow)
1596	continue;
1597	if (paLSPages[iPage].fIgnore)
1598	continue;
1599	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM) /* in case of recent remappings */
1600	continue;
1601	if ( PGM_PAGE_GET_STATE(pCurPage)
1602	!= ( paLSPages[iPage].fZero
1603	? PGM_PAGE_STATE_ZERO
1604	: paLSPages[iPage].fShared
1605	? PGM_PAGE_STATE_SHARED
1606	: PGM_PAGE_STATE_WRITE_MONITORED))
1607	continue;
1608	if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) > 0)
1609	continue;
1610	}
1611	else
1612	{
1613	if ( paLSPages
1614	&& !paLSPages[iPage].fDirty
1615	&& !paLSPages[iPage].fIgnore)
1616	{
1617	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1618	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1619	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#1");
1620	#endif
1621	continue;
1622	}
1623	if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
1624	continue;
1625	}
1626
1627	/*
1628	* Do the saving outside the PGM critsect since SSM may block on I/O.
1629	*/
1630	int rc;
1631	RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
1632	bool fZero = PGM_PAGE_IS_ZERO(pCurPage);
1633	bool fBallooned = PGM_PAGE_IS_BALLOONED(pCurPage);
1634	bool fSkipped = false;
1635
1636	if (!fZero && !fBallooned)
1637	{
1638	/*
1639	* Copy the page and then save it outside the lock (since any
1640	* SSM call may block).
1641	*/
1642	uint8_t abPage[PAGE_SIZE];
1643	PGMPAGEMAPLOCK PgMpLck;
1644	void const *pvPage;
1645	rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pCurPage, GCPhys, &pvPage, &PgMpLck);
1646	if (RT_SUCCESS(rc))
1647	{
1648	memcpy(abPage, pvPage, PAGE_SIZE);
1649	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1650	if (paLSPages)
1651	pgmR3StateVerifyCrc32ForPage(abPage, pCur, paLSPages, iPage, "save#3");
1652	#endif
1653	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
1654	}
1655	pgmUnlock(pVM);
1656	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
1657
1658	/* Try save some memory when restoring. */
1659	if (!ASMMemIsZeroPage(pvPage))
1660	{
1661	if (fFTMDeltaSaveActive)
1662	{
1663	if ( PGM_PAGE_IS_WRITTEN_TO(pCurPage)
1664	\|\| PGM_PAGE_IS_FT_DIRTY(pCurPage))
1665	{
1666	if (GCPhys == GCPhysLast + PAGE_SIZE)
1667	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
1668	else
1669	{
1670	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW \| PGM_STATE_REC_FLAG_ADDR);
1671	SSMR3PutGCPhys(pSSM, GCPhys);
1672	}
1673	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
1674	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pCurPage);
1675	PGM_PAGE_CLEAR_FT_DIRTY(pCurPage);
1676	}
1677	/* else nothing changed, so skip it. */
1678	else
1679	fSkipped = true;
1680	}
1681	else
1682	{
1683	if (GCPhys == GCPhysLast + PAGE_SIZE)
1684	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
1685	else
1686	{
1687	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW \| PGM_STATE_REC_FLAG_ADDR);
1688	SSMR3PutGCPhys(pSSM, GCPhys);
1689	}
1690	rc = SSMR3PutMem(pSSM, abPage, PAGE_SIZE);
1691	}
1692	}
1693	else
1694	{
1695	if (GCPhys == GCPhysLast + PAGE_SIZE)
1696	rc = SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO);
1697	else
1698	{
1699	SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO \| PGM_STATE_REC_FLAG_ADDR);
1700	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1701	}
1702	}
1703	}
1704	else
1705	{
1706	/*
1707	* Dirty zero or ballooned page.
1708	*/
1709	#ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
1710	if (paLSPages)
1711	pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#2");
1712	#endif
1713	pgmUnlock(pVM);
1714
1715	uint8_t u8RecType = fBallooned ? PGM_STATE_REC_RAM_BALLOONED : PGM_STATE_REC_RAM_ZERO;
1716	if (GCPhys == GCPhysLast + PAGE_SIZE)
1717	rc = SSMR3PutU8(pSSM, u8RecType);
1718	else
1719	{
1720	SSMR3PutU8(pSSM, u8RecType \| PGM_STATE_REC_FLAG_ADDR);
1721	rc = SSMR3PutGCPhys(pSSM, GCPhys);
1722	}
1723	}
1724	if (RT_FAILURE(rc))
1725	return rc;
1726
1727	pgmLock(pVM);
1728	if (!fSkipped)
1729	GCPhysLast = GCPhys;
1730	if (paLSPages)
1731	{
1732	paLSPages[iPage].fDirty = 0;
1733	pVM->pgm.s.LiveSave.Ram.cReadyPages++;
1734	if (fZero)
1735	pVM->pgm.s.LiveSave.Ram.cZeroPages++;
1736	pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
1737	pVM->pgm.s.LiveSave.cSavedPages++;
1738	}
1739	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1740	{
1741	GCPhysCur = GCPhys \| PAGE_OFFSET_MASK;
1742	break; /* restart */
1743	}
1744
1745	} /* for each page in range */
1746
1747	if (GCPhysCur != 0)
1748	break; /* Yield + ramrange change */
1749	GCPhysCur = pCur->GCPhysLast;
1750	}
1751	} /* for each range */
1752	} while (pCur);
1753
1754	pgmUnlock(pVM);
1755
1756	return VINF_SUCCESS;
1757	}
1758
1759
1760	/**
1761	* Cleans up RAM pages after a live save.
1762	*
1763	* @param pVM Pointer to the VM.
1764	*/
1765	static void pgmR3DoneRamPages(PVM pVM)
1766	{
1767	/*
1768	* Free the tracking arrays and disable write monitoring.
1769	*
1770	* Play nice with the PGM lock in case we're called while the VM is still
1771	* running. This means we have to delay the freeing since we wish to use
1772	* paLSPages as an indicator of which RAM ranges which we need to scan for
1773	* write monitored pages.
1774	*/
1775	void *pvToFree = NULL;
1776	PPGMRAMRANGE pCur;
1777	uint32_t cMonitoredPages = 0;
1778	pgmLock(pVM);
1779	do
1780	{
1781	for (pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
1782	{
1783	if (pCur->paLSPages)
1784	{
1785	if (pvToFree)
1786	{
1787	uint32_t idRamRangesGen = pVM->pgm.s.idRamRangesGen;
1788	pgmUnlock(pVM);
1789	MMR3HeapFree(pvToFree);
1790	pvToFree = NULL;
1791	pgmLock(pVM);
1792	if (idRamRangesGen != pVM->pgm.s.idRamRangesGen)
1793	break; /* start over again. */
1794	}
1795
1796	pvToFree = pCur->paLSPages;
1797	pCur->paLSPages = NULL;
1798
1799	uint32_t iPage = pCur->cb >> PAGE_SHIFT;
1800	while (iPage--)
1801	{
1802	PPGMPAGE pPage = &pCur->aPages[iPage];
1803	PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pPage);
1804	if (PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_WRITE_MONITORED)
1805	{
1806	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ALLOCATED);
1807	cMonitoredPages++;
1808	}
1809	}
1810	}
1811	}
1812	} while (pCur);
1813
1814	Assert(pVM->pgm.s.cMonitoredPages >= cMonitoredPages);
1815	if (pVM->pgm.s.cMonitoredPages < cMonitoredPages)
1816	pVM->pgm.s.cMonitoredPages = 0;
1817	else
1818	pVM->pgm.s.cMonitoredPages -= cMonitoredPages;
1819
1820	pgmUnlock(pVM);
1821
1822	MMR3HeapFree(pvToFree);
1823	pvToFree = NULL;
1824	}
1825
1826
1827	/**
1828	* Execute a live save pass.
1829	*
1830	* @returns VBox status code.
1831	*
1832	* @param pVM Pointer to the VM.
1833	* @param pSSM The SSM handle.
1834	*/
1835	static DECLCALLBACK(int) pgmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1836	{
1837	int rc;
1838
1839	/*
1840	* Save the MMIO2 and ROM range IDs in pass 0.
1841	*/
1842	if (uPass == 0)
1843	{
1844	rc = pgmR3SaveRamConfig(pVM, pSSM);
1845	if (RT_FAILURE(rc))
1846	return rc;
1847	rc = pgmR3SaveRomRanges(pVM, pSSM);
1848	if (RT_FAILURE(rc))
1849	return rc;
1850	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
1851	if (RT_FAILURE(rc))
1852	return rc;
1853	}
1854	/*
1855	* Reset the page-per-second estimate to avoid inflation by the initial
1856	* load of zero pages. pgmR3LiveVote ASSUMES this is done at pass 7.
1857	*/
1858	else if (uPass == 7)
1859	{
1860	pVM->pgm.s.LiveSave.cSavedPages = 0;
1861	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
1862	}
1863
1864	/*
1865	* Do the scanning.
1866	*/
1867	pgmR3ScanRomPages(pVM);
1868	pgmR3ScanMmio2Pages(pVM, uPass);
1869	pgmR3ScanRamPages(pVM, false /fFinalPass/);
1870	pgmR3PoolClearAll(pVM, true /fFlushRemTlb/); /** @todo this could perhaps be optimized a bit. */
1871
1872	/*
1873	* Save the pages.
1874	*/
1875	if (uPass == 0)
1876	rc = pgmR3SaveRomVirginPages( pVM, pSSM, true /fLiveSave/);
1877	else
1878	rc = VINF_SUCCESS;
1879	if (RT_SUCCESS(rc))
1880	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, true /fLiveSave/, false /fFinalPass/);
1881	if (RT_SUCCESS(rc))
1882	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, uPass);
1883	if (RT_SUCCESS(rc))
1884	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, uPass);
1885	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes care of it.) */
1886
1887	return rc;
1888	}
1889
1890
1891	/**
1892	* Votes on whether the live save phase is done or not.
1893	*
1894	* @returns VBox status code.
1895	*
1896	* @param pVM Pointer to the VM.
1897	* @param pSSM The SSM handle.
1898	* @param uPass The data pass.
1899	*/
1900	static DECLCALLBACK(int) pgmR3LiveVote(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
1901	{
1902	/*
1903	* Update and calculate parameters used in the decision making.
1904	*/
1905	const uint32_t cHistoryEntries = RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory);
1906
1907	/* update history. */
1908	pgmLock(pVM);
1909	uint32_t const cWrittenToPages = pVM->pgm.s.cWrittenToPages;
1910	pgmUnlock(pVM);
1911	uint32_t const cDirtyNow = pVM->pgm.s.LiveSave.Rom.cDirtyPages
1912	+ pVM->pgm.s.LiveSave.Mmio2.cDirtyPages
1913	+ pVM->pgm.s.LiveSave.Ram.cDirtyPages
1914	+ cWrittenToPages;
1915	uint32_t i = pVM->pgm.s.LiveSave.iDirtyPagesHistory;
1916	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = cDirtyNow;
1917	pVM->pgm.s.LiveSave.iDirtyPagesHistory = (i + 1) % cHistoryEntries;
1918
1919	/* calc shortterm average (4 passes). */
1920	AssertCompile(RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory) > 4);
1921	uint64_t cTotal = pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1922	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 1) % cHistoryEntries];
1923	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 2) % cHistoryEntries];
1924	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 3) % cHistoryEntries];
1925	uint32_t const cDirtyPagesShort = cTotal / 4;
1926	pVM->pgm.s.LiveSave.cDirtyPagesShort = cDirtyPagesShort;
1927
1928	/* calc longterm average. */
1929	cTotal = 0;
1930	if (uPass < cHistoryEntries)
1931	for (i = 0; i < cHistoryEntries && i <= uPass; i++)
1932	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1933	else
1934	for (i = 0; i < cHistoryEntries; i++)
1935	cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
1936	uint32_t const cDirtyPagesLong = cTotal / cHistoryEntries;
1937	pVM->pgm.s.LiveSave.cDirtyPagesLong = cDirtyPagesLong;
1938
1939	/* estimate the speed */
1940	uint64_t cNsElapsed = RTTimeNanoTS() - pVM->pgm.s.LiveSave.uSaveStartNS;
1941	uint32_t cPagesPerSecond = (uint32_t)( pVM->pgm.s.LiveSave.cSavedPages
1942	/ ((long double)cNsElapsed / 1000000000.0) );
1943	pVM->pgm.s.LiveSave.cPagesPerSecond = cPagesPerSecond;
1944
1945	/*
1946	* Try make a decision.
1947	*/
1948	if ( cDirtyPagesShort <= cDirtyPagesLong
1949	&& ( cDirtyNow <= cDirtyPagesShort
1950	\|\| cDirtyNow - cDirtyPagesShort < RT_MIN(cDirtyPagesShort / 8, 16)
1951	)
1952	)
1953	{
1954	if (uPass > 10)
1955	{
1956	uint32_t cMsLeftShort = (uint32_t)(cDirtyPagesShort / (long double)cPagesPerSecond * 1000.0);
1957	uint32_t cMsLeftLong = (uint32_t)(cDirtyPagesLong / (long double)cPagesPerSecond * 1000.0);
1958	uint32_t cMsMaxDowntime = SSMR3HandleMaxDowntime(pSSM);
1959	if (cMsMaxDowntime < 32)
1960	cMsMaxDowntime = 32;
1961	if ( ( cMsLeftLong <= cMsMaxDowntime
1962	&& cMsLeftShort < cMsMaxDowntime)
1963	\|\| cMsLeftShort < cMsMaxDowntime / 2
1964	)
1965	{
1966	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u\|%ums cDirtyPagesLong=%u\|%ums cMsMaxDowntime=%u\n",
1967	uPass, cDirtyPagesShort, cMsLeftShort, cDirtyPagesLong, cMsLeftLong, cMsMaxDowntime));
1968	return VINF_SUCCESS;
1969	}
1970	}
1971	else
1972	{
1973	if ( ( cDirtyPagesShort <= 128
1974	&& cDirtyPagesLong <= 1024)
1975	\|\| cDirtyPagesLong <= 256
1976	)
1977	{
1978	Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u cDirtyPagesLong=%u\n", uPass, cDirtyPagesShort, cDirtyPagesLong));
1979	return VINF_SUCCESS;
1980	}
1981	}
1982	}
1983
1984	/*
1985	* Come up with a completion percentage. Currently this is a simple
1986	* dirty page (long term) vs. total pages ratio + some pass trickery.
1987	*/
1988	unsigned uPctDirty = (unsigned)( (long double)cDirtyPagesLong
1989	/ (pVM->pgm.s.cAllPages - pVM->pgm.s.LiveSave.cIgnoredPages - pVM->pgm.s.cZeroPages) );
1990	if (uPctDirty <= 100)
1991	SSMR3HandleReportLivePercent(pSSM, RT_MIN(100 - uPctDirty, uPass * 2));
1992	else
1993	AssertMsgFailed(("uPctDirty=%u cDirtyPagesLong=%#x cAllPages=%#x cIgnoredPages=%#x cZeroPages=%#x\n",
1994	uPctDirty, cDirtyPagesLong, pVM->pgm.s.cAllPages, pVM->pgm.s.LiveSave.cIgnoredPages, pVM->pgm.s.cZeroPages));
1995
1996	return VINF_SSM_VOTE_FOR_ANOTHER_PASS;
1997	}
1998
1999
2000	/**
2001	* Prepare for a live save operation.
2002	*
2003	* This will attempt to allocate and initialize the tracking structures. It
2004	* will also prepare for write monitoring of pages and initialize PGM::LiveSave.
2005	* pgmR3SaveDone will do the cleanups.
2006	*
2007	* @returns VBox status code.
2008	*
2009	* @param pVM Pointer to the VM.
2010	* @param pSSM The SSM handle.
2011	*/
2012	static DECLCALLBACK(int) pgmR3LivePrep(PVM pVM, PSSMHANDLE pSSM)
2013	{
2014	/*
2015	* Indicate that we will be using the write monitoring.
2016	*/
2017	pgmLock(pVM);
2018	/** @todo find a way of mediating this when more users are added. */
2019	if (pVM->pgm.s.fPhysWriteMonitoringEngaged)
2020	{
2021	pgmUnlock(pVM);
2022	AssertLogRelFailedReturn(VERR_PGM_WRITE_MONITOR_ENGAGED);
2023	}
2024	pVM->pgm.s.fPhysWriteMonitoringEngaged = true;
2025	pgmUnlock(pVM);
2026
2027	/*
2028	* Initialize the statistics.
2029	*/
2030	pVM->pgm.s.LiveSave.Rom.cReadyPages = 0;
2031	pVM->pgm.s.LiveSave.Rom.cDirtyPages = 0;
2032	pVM->pgm.s.LiveSave.Mmio2.cReadyPages = 0;
2033	pVM->pgm.s.LiveSave.Mmio2.cDirtyPages = 0;
2034	pVM->pgm.s.LiveSave.Ram.cReadyPages = 0;
2035	pVM->pgm.s.LiveSave.Ram.cDirtyPages = 0;
2036	pVM->pgm.s.LiveSave.cIgnoredPages = 0;
2037	pVM->pgm.s.LiveSave.fActive = true;
2038	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory); i++)
2039	pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = UINT32_MAX / 2;
2040	pVM->pgm.s.LiveSave.iDirtyPagesHistory = 0;
2041	pVM->pgm.s.LiveSave.cSavedPages = 0;
2042	pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
2043	pVM->pgm.s.LiveSave.cPagesPerSecond = 8192;
2044
2045	/*
2046	* Per page type.
2047	*/
2048	int rc = pgmR3PrepRomPages(pVM);
2049	if (RT_SUCCESS(rc))
2050	rc = pgmR3PrepMmio2Pages(pVM);
2051	if (RT_SUCCESS(rc))
2052	rc = pgmR3PrepRamPages(pVM);
2053
2054	NOREF(pSSM);
2055	return rc;
2056	}
2057
2058
2059	/**
2060	* Execute state save operation.
2061	*
2062	* @returns VBox status code.
2063	* @param pVM Pointer to the VM.
2064	* @param pSSM SSM operation handle.
2065	*/
2066	static DECLCALLBACK(int) pgmR3SaveExec(PVM pVM, PSSMHANDLE pSSM)
2067	{
2068	int rc = VINF_SUCCESS;
2069	PPGM pPGM = &pVM->pgm.s;
2070
2071	/*
2072	* Lock PGM and set the no-more-writes indicator.
2073	*/
2074	pgmLock(pVM);
2075	pVM->pgm.s.fNoMorePhysWrites = true;
2076
2077	/*
2078	* Save basic data (required / unaffected by relocation).
2079	*/
2080	bool const fMappingsFixed = pVM->pgm.s.fMappingsFixed;
2081	pVM->pgm.s.fMappingsFixed \|= pVM->pgm.s.fMappingsFixedRestored;
2082	SSMR3PutStruct(pSSM, pPGM, &s_aPGMFields[0]);
2083	pVM->pgm.s.fMappingsFixed = fMappingsFixed;
2084
2085	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
2086	rc = SSMR3PutStruct(pSSM, &pVM->aCpus[idCpu].pgm.s, &s_aPGMCpuFields[0]);
2087
2088	/*
2089	* Save the (remainder of the) memory.
2090	*/
2091	if (RT_SUCCESS(rc))
2092	{
2093	if (pVM->pgm.s.LiveSave.fActive)
2094	{
2095	pgmR3ScanRomPages(pVM);
2096	pgmR3ScanMmio2Pages(pVM, SSM_PASS_FINAL);
2097	pgmR3ScanRamPages(pVM, true /fFinalPass/);
2098
2099	rc = pgmR3SaveShadowedRomPages( pVM, pSSM, true /fLiveSave/, true /fFinalPass/);
2100	if (RT_SUCCESS(rc))
2101	rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2102	if (RT_SUCCESS(rc))
2103	rc = pgmR3SaveRamPages( pVM, pSSM, true /fLiveSave/, SSM_PASS_FINAL);
2104	}
2105	else
2106	{
2107	rc = pgmR3SaveRamConfig(pVM, pSSM);
2108	if (RT_SUCCESS(rc))
2109	rc = pgmR3SaveRomRanges(pVM, pSSM);
2110	if (RT_SUCCESS(rc))
2111	rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
2112	if (RT_SUCCESS(rc))
2113	rc = pgmR3SaveRomVirginPages( pVM, pSSM, false /fLiveSave/);
2114	if (RT_SUCCESS(rc))
2115	rc = pgmR3SaveShadowedRomPages(pVM, pSSM, false /fLiveSave/, true /fFinalPass/);
2116	if (RT_SUCCESS(rc))
2117	rc = pgmR3SaveMmio2Pages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2118	if (RT_SUCCESS(rc))
2119	rc = pgmR3SaveRamPages( pVM, pSSM, false /fLiveSave/, SSM_PASS_FINAL);
2120	}
2121	SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes of it.) */
2122	}
2123
2124	pgmUnlock(pVM);
2125	return rc;
2126	}
2127
2128
2129	/**
2130	* Cleans up after an save state operation.
2131	*
2132	* @returns VBox status code.
2133	* @param pVM Pointer to the VM.
2134	* @param pSSM SSM operation handle.
2135	*/
2136	static DECLCALLBACK(int) pgmR3SaveDone(PVM pVM, PSSMHANDLE pSSM)
2137	{
2138	/*
2139	* Do per page type cleanups first.
2140	*/
2141	if (pVM->pgm.s.LiveSave.fActive)
2142	{
2143	pgmR3DoneRomPages(pVM);
2144	pgmR3DoneMmio2Pages(pVM);
2145	pgmR3DoneRamPages(pVM);
2146	}
2147
2148	/*
2149	* Clear the live save indicator and disengage write monitoring.
2150	*/
2151	pgmLock(pVM);
2152	pVM->pgm.s.LiveSave.fActive = false;
2153	/** @todo this is blindly assuming that we're the only user of write
2154	* monitoring. Fix this when more users are added. */
2155	pVM->pgm.s.fPhysWriteMonitoringEngaged = false;
2156	pgmUnlock(pVM);
2157
2158	NOREF(pSSM);
2159	return VINF_SUCCESS;
2160	}
2161
2162
2163	/**
2164	* Prepare state load operation.
2165	*
2166	* @returns VBox status code.
2167	* @param pVM Pointer to the VM.
2168	* @param pSSM SSM operation handle.
2169	*/
2170	static DECLCALLBACK(int) pgmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM)
2171	{
2172	/*
2173	* Call the reset function to make sure all the memory is cleared.
2174	*/
2175	PGMR3Reset(pVM);
2176	pVM->pgm.s.LiveSave.fActive = false;
2177	NOREF(pSSM);
2178	return VINF_SUCCESS;
2179	}
2180
2181
2182	/**
2183	* Load an ignored page.
2184	*
2185	* @returns VBox status code.
2186	* @param pSSM The saved state handle.
2187	*/
2188	static int pgmR3LoadPageToDevNullOld(PSSMHANDLE pSSM)
2189	{
2190	uint8_t abPage[PAGE_SIZE];
2191	return SSMR3GetMem(pSSM, &abPage[0], sizeof(abPage));
2192	}
2193
2194
2195	/**
2196	* Compares a page with an old save type value.
2197	*
2198	* @returns true if equal, false if not.
2199	* @param pPage The page to compare.
2200	* @param uOldType The old type value from the saved state.
2201	*/
2202	DECLINLINE(bool) pgmR3CompareNewAndOldPageTypes(PPGMPAGE pPage, uint8_t uOldType)
2203	{
2204	uint8_t uOldPageType;
2205	switch (PGM_PAGE_GET_TYPE(pPage))
2206	{
2207	case PGMPAGETYPE_INVALID: uOldPageType = PGMPAGETYPE_OLD_INVALID; break;
2208	case PGMPAGETYPE_RAM: uOldPageType = PGMPAGETYPE_OLD_RAM; break;
2209	case PGMPAGETYPE_MMIO2: uOldPageType = PGMPAGETYPE_OLD_MMIO2; break;
2210	case PGMPAGETYPE_MMIO2_ALIAS_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO2_ALIAS_MMIO; break;
2211	case PGMPAGETYPE_ROM_SHADOW: uOldPageType = PGMPAGETYPE_OLD_ROM_SHADOW; break;
2212	case PGMPAGETYPE_ROM: uOldPageType = PGMPAGETYPE_OLD_ROM; break;
2213	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO: /* fall thru */
2214	case PGMPAGETYPE_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO; break;
2215	default:
2216	AssertFailed();
2217	uOldPageType = PGMPAGETYPE_OLD_INVALID;
2218	break;
2219	}
2220	return uOldPageType == uOldType;
2221	}
2222
2223
2224	/**
2225	* Loads a page without any bits in the saved state, i.e. making sure it's
2226	* really zero.
2227	*
2228	* @returns VBox status code.
2229	* @param pVM Pointer to the VM.
2230	* @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
2231	* state).
2232	* @param pPage The guest page tracking structure.
2233	* @param GCPhys The page address.
2234	* @param pRam The ram range (logging).
2235	*/
2236	static int pgmR3LoadPageZeroOld(PVM pVM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2237	{
2238	if ( uOldType != PGMPAGETYPE_OLD_INVALID
2239	&& !pgmR3CompareNewAndOldPageTypes(pPage, uOldType))
2240	return VERR_SSM_UNEXPECTED_DATA;
2241
2242	/* I think this should be sufficient. */
2243	if ( !PGM_PAGE_IS_ZERO(pPage)
2244	&& !PGM_PAGE_IS_BALLOONED(pPage))
2245	return VERR_SSM_UNEXPECTED_DATA;
2246
2247	NOREF(pVM);
2248	NOREF(GCPhys);
2249	NOREF(pRam);
2250	return VINF_SUCCESS;
2251	}
2252
2253
2254	/**
2255	* Loads a page from the saved state.
2256	*
2257	* @returns VBox status code.
2258	* @param pVM Pointer to the VM.
2259	* @param pSSM The SSM handle.
2260	* @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
2261	* state).
2262	* @param pPage The guest page tracking structure.
2263	* @param GCPhys The page address.
2264	* @param pRam The ram range (logging).
2265	*/
2266	static int pgmR3LoadPageBitsOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2267	{
2268	/*
2269	* Match up the type, dealing with MMIO2 aliases (dropped).
2270	*/
2271	AssertLogRelMsgReturn( uOldType == PGMPAGETYPE_INVALID
2272	\|\| pgmR3CompareNewAndOldPageTypes(pPage, uOldType)
2273	/* kudge for the expanded PXE bios (r67885) - @bugref{5687}: */
2274	\|\| ( uOldType == PGMPAGETYPE_OLD_RAM
2275	&& GCPhys >= 0xed000
2276	&& GCPhys <= 0xeffff
2277	&& PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM)
2278	,
2279	("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc),
2280	VERR_SSM_UNEXPECTED_DATA);
2281
2282	/*
2283	* Load the page.
2284	*/
2285	PGMPAGEMAPLOCK PgMpLck;
2286	void *pvPage;
2287	int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvPage, &PgMpLck);
2288	if (RT_SUCCESS(rc))
2289	{
2290	rc = SSMR3GetMem(pSSM, pvPage, PAGE_SIZE);
2291	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2292	}
2293
2294	return rc;
2295	}
2296
2297
2298	/**
2299	* Loads a page (counter part to pgmR3SavePage).
2300	*
2301	* @returns VBox status code, fully bitched errors.
2302	* @param pVM Pointer to the VM.
2303	* @param pSSM The SSM handle.
2304	* @param uOldType The page type.
2305	* @param pPage The page.
2306	* @param GCPhys The page address.
2307	* @param pRam The RAM range (for error messages).
2308	*/
2309	static int pgmR3LoadPageOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2310	{
2311	uint8_t uState;
2312	int rc = SSMR3GetU8(pSSM, &uState);
2313	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s rc=%Rrc\n", pPage, GCPhys, pRam->pszDesc, rc), rc);
2314	if (uState == 0 /* zero */)
2315	rc = pgmR3LoadPageZeroOld(pVM, uOldType, pPage, GCPhys, pRam);
2316	else if (uState == 1)
2317	rc = pgmR3LoadPageBitsOld(pVM, pSSM, uOldType, pPage, GCPhys, pRam);
2318	else
2319	rc = VERR_PGM_INVALID_SAVED_PAGE_STATE;
2320	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] uState=%d uOldType=%d GCPhys=%RGp %s rc=%Rrc\n",
2321	pPage, uState, uOldType, GCPhys, pRam->pszDesc, rc),
2322	rc);
2323	return VINF_SUCCESS;
2324	}
2325
2326
2327	/**
2328	* Loads a shadowed ROM page.
2329	*
2330	* @returns VBox status code, errors are fully bitched.
2331	* @param pVM Pointer to the VM.
2332	* @param pSSM The saved state handle.
2333	* @param pPage The page.
2334	* @param GCPhys The page address.
2335	* @param pRam The RAM range (for error messages).
2336	*/
2337	static int pgmR3LoadShadowedRomPageOld(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2338	{
2339	/*
2340	* Load and set the protection first, then load the two pages, the first
2341	* one is the active the other is the passive.
2342	*/
2343	PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
2344	AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2345
2346	uint8_t uProt;
2347	int rc = SSMR3GetU8(pSSM, &uProt);
2348	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
2349	PGMROMPROT enmProt = (PGMROMPROT)uProt;
2350	AssertLogRelMsgReturn( enmProt >= PGMROMPROT_INVALID
2351	&& enmProt < PGMROMPROT_END,
2352	("enmProt=%d pPage=%R[pgmpage] GCPhys=%#x %s\n", enmProt, pPage, GCPhys, pRam->pszDesc),
2353	VERR_SSM_UNEXPECTED_DATA);
2354
2355	if (pRomPage->enmProt != enmProt)
2356	{
2357	rc = PGMR3PhysRomProtect(pVM, GCPhys, PAGE_SIZE, enmProt);
2358	AssertLogRelRCReturn(rc, rc);
2359	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2360	}
2361
2362	PPGMPAGE pPageActive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Virgin : &pRomPage->Shadow;
2363	PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
2364	uint8_t u8ActiveType = PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM : PGMPAGETYPE_ROM_SHADOW;
2365	uint8_t u8PassiveType= PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM_SHADOW : PGMPAGETYPE_ROM;
2366
2367	/** @todo this isn't entirely correct as long as pgmPhysGCPhys2CCPtrInternal is
2368	* used down the line (will the 2nd page will be written to the first
2369	* one because of a false TLB hit since the TLB is using GCPhys and
2370	* doesn't check the HCPhys of the desired page). */
2371	rc = pgmR3LoadPageOld(pVM, pSSM, u8ActiveType, pPage, GCPhys, pRam);
2372	if (RT_SUCCESS(rc))
2373	{
2374	pPageActive = pPage;
2375	rc = pgmR3LoadPageOld(pVM, pSSM, u8PassiveType, pPagePassive, GCPhys, pRam);
2376	}
2377	return rc;
2378	}
2379
2380	/**
2381	* Ram range flags and bits for older versions of the saved state.
2382	*
2383	* @returns VBox status code.
2384	*
2385	* @param pVM Pointer to the VM.
2386	* @param pSSM The SSM handle.
2387	* @param uVersion The saved state version.
2388	*/
2389	static int pgmR3LoadMemoryOld(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2390	{
2391	PPGM pPGM = &pVM->pgm.s;
2392
2393	/*
2394	* Ram range flags and bits.
2395	*/
2396	uint32_t i = 0;
2397	for (PPGMRAMRANGE pRam = pPGM->pRamRangesXR3; ; pRam = pRam->pNextR3, i++)
2398	{
2399	/* Check the sequence number / separator. */
2400	uint32_t u32Sep;
2401	int rc = SSMR3GetU32(pSSM, &u32Sep);
2402	if (RT_FAILURE(rc))
2403	return rc;
2404	if (u32Sep == ~0U)
2405	break;
2406	if (u32Sep != i)
2407	{
2408	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2409	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2410	}
2411	AssertLogRelReturn(pRam, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2412
2413	/* Get the range details. */
2414	RTGCPHYS GCPhys;
2415	SSMR3GetGCPhys(pSSM, &GCPhys);
2416	RTGCPHYS GCPhysLast;
2417	SSMR3GetGCPhys(pSSM, &GCPhysLast);
2418	RTGCPHYS cb;
2419	SSMR3GetGCPhys(pSSM, &cb);
2420	uint8_t fHaveBits;
2421	rc = SSMR3GetU8(pSSM, &fHaveBits);
2422	if (RT_FAILURE(rc))
2423	return rc;
2424	if (fHaveBits & ~1)
2425	{
2426	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2427	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2428	}
2429	size_t cchDesc = 0;
2430	char szDesc[256];
2431	szDesc[0] = '\0';
2432	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2433	{
2434	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2435	if (RT_FAILURE(rc))
2436	return rc;
2437	/* Since we've modified the description strings in r45878, only compare
2438	them if the saved state is more recent. */
2439	if (uVersion != PGM_SAVED_STATE_VERSION_RR_DESC)
2440	cchDesc = strlen(szDesc);
2441	}
2442
2443	/*
2444	* Match it up with the current range.
2445	*
2446	* Note there is a hack for dealing with the high BIOS mapping
2447	* in the old saved state format, this means we might not have
2448	* a 1:1 match on success.
2449	*/
2450	if ( ( GCPhys != pRam->GCPhys
2451	\|\| GCPhysLast != pRam->GCPhysLast
2452	\|\| cb != pRam->cb
2453	\|\| ( cchDesc
2454	&& strcmp(szDesc, pRam->pszDesc)) )
2455	/* Hack for PDMDevHlpPhysReserve(pDevIns, 0xfff80000, 0x80000, "High ROM Region"); */
2456	&& ( uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE
2457	\|\| GCPhys != UINT32_C(0xfff80000)
2458	\|\| GCPhysLast != UINT32_C(0xffffffff)
2459	\|\| pRam->GCPhysLast != GCPhysLast
2460	\|\| pRam->GCPhys < GCPhys
2461	\|\| !fHaveBits)
2462	)
2463	{
2464	LogRel(("Ram range: %RGp-%RGp %RGp bytes %s %s\n"
2465	"State : %RGp-%RGp %RGp bytes %s %s\n",
2466	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc,
2467	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc));
2468	/*
2469	* If we're loading a state for debugging purpose, don't make a fuss if
2470	* the MMIO and ROM stuff isn't 100% right, just skip the mismatches.
2471	*/
2472	if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
2473	\|\| GCPhys < 8 * _1M)
2474	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2475	N_("RAM range mismatch; saved={%RGp-%RGp %RGp bytes %s %s} config={%RGp-%RGp %RGp bytes %s %s}"),
2476	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc,
2477	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc);
2478
2479	AssertMsgFailed(("debug skipping not implemented, sorry\n"));
2480	continue;
2481	}
2482
2483	uint32_t cPages = (GCPhysLast - GCPhys + 1) >> PAGE_SHIFT;
2484	if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
2485	{
2486	/*
2487	* Load the pages one by one.
2488	*/
2489	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2490	{
2491	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2492	PPGMPAGE pPage = &pRam->aPages[iPage];
2493	uint8_t uOldType;
2494	rc = SSMR3GetU8(pSSM, &uOldType);
2495	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] iPage=%#x GCPhysPage=%#x %s\n", pPage, iPage, GCPhysPage, pRam->pszDesc), rc);
2496	if (uOldType == PGMPAGETYPE_OLD_ROM_SHADOW)
2497	rc = pgmR3LoadShadowedRomPageOld(pVM, pSSM, pPage, GCPhysPage, pRam);
2498	else
2499	rc = pgmR3LoadPageOld(pVM, pSSM, uOldType, pPage, GCPhysPage, pRam);
2500	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2501	}
2502	}
2503	else
2504	{
2505	/*
2506	* Old format.
2507	*/
2508
2509	/* Of the page flags, pick up MMIO2 and ROM/RESERVED for the !fHaveBits case.
2510	The rest is generally irrelevant and wrong since the stuff have to match registrations. */
2511	uint32_t fFlags = 0;
2512	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2513	{
2514	uint16_t u16Flags;
2515	rc = SSMR3GetU16(pSSM, &u16Flags);
2516	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2517	fFlags \|= u16Flags;
2518	}
2519
2520	/* Load the bits */
2521	if ( !fHaveBits
2522	&& GCPhysLast < UINT32_C(0xe0000000))
2523	{
2524	/*
2525	* Dynamic chunks.
2526	*/
2527	const uint32_t cPagesInChunk = (110241024) >> PAGE_SHIFT;
2528	AssertLogRelMsgReturn(cPages % cPagesInChunk == 0,
2529	("cPages=%#x cPagesInChunk=%#x\n", cPages, cPagesInChunk, pRam->GCPhys, pRam->pszDesc),
2530	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2531
2532	for (uint32_t iPage = 0; iPage < cPages; /* incremented by inner loop */ )
2533	{
2534	uint8_t fPresent;
2535	rc = SSMR3GetU8(pSSM, &fPresent);
2536	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2537	AssertLogRelMsgReturn(fPresent == (uint8_t)true \|\| fPresent == (uint8_t)false,
2538	("fPresent=%#x iPage=%#x GCPhys=%#x %s\n", fPresent, iPage, pRam->GCPhys, pRam->pszDesc),
2539	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2540
2541	for (uint32_t iChunkPage = 0; iChunkPage < cPagesInChunk; iChunkPage++, iPage++)
2542	{
2543	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2544	PPGMPAGE pPage = &pRam->aPages[iPage];
2545	if (fPresent)
2546	{
2547	if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_MMIO
2548	\|\| PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_SPECIAL_ALIAS_MMIO)
2549	rc = pgmR3LoadPageToDevNullOld(pSSM);
2550	else
2551	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2552	}
2553	else
2554	rc = pgmR3LoadPageZeroOld(pVM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2555	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2556	}
2557	}
2558	}
2559	else if (pRam->pvR3)
2560	{
2561	/*
2562	* MMIO2.
2563	*/
2564	AssertLogRelMsgReturn((fFlags & 0x0f) == RT_BIT(3) /MM_RAM_FLAGS_MMIO2/,
2565	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2566	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2567	AssertLogRelMsgReturn(pRam->pvR3,
2568	("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc),
2569	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2570
2571	rc = SSMR3GetMem(pSSM, pRam->pvR3, pRam->cb);
2572	AssertLogRelMsgRCReturn(rc, ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc), rc);
2573	}
2574	else if (GCPhysLast < UINT32_C(0xfff80000))
2575	{
2576	/*
2577	* PCI MMIO, no pages saved.
2578	*/
2579	}
2580	else
2581	{
2582	/*
2583	* Load the 0xfff80000..0xffffffff BIOS range.
2584	* It starts with X reserved pages that we have to skip over since
2585	* the RAMRANGE create by the new code won't include those.
2586	*/
2587	AssertLogRelMsgReturn( !(fFlags & RT_BIT(3) /MM_RAM_FLAGS_MMIO2/)
2588	&& (fFlags & RT_BIT(0) /MM_RAM_FLAGS_RESERVED/),
2589	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2590	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2591	AssertLogRelMsgReturn(GCPhys == UINT32_C(0xfff80000),
2592	("GCPhys=%RGp pRamRange{GCPhys=%#x %s}\n", GCPhys, pRam->GCPhys, pRam->pszDesc),
2593	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2594
2595	/* Skip wasted reserved pages before the ROM. */
2596	while (GCPhys < pRam->GCPhys)
2597	{
2598	rc = pgmR3LoadPageToDevNullOld(pSSM);
2599	GCPhys += PAGE_SIZE;
2600	}
2601
2602	/* Load the bios pages. */
2603	cPages = pRam->cb >> PAGE_SHIFT;
2604	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2605	{
2606	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2607	PPGMPAGE pPage = &pRam->aPages[iPage];
2608
2609	AssertLogRelMsgReturn(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM,
2610	("GCPhys=%RGp pPage=%R[pgmpage]\n", GCPhys, GCPhys),
2611	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2612	rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_ROM, pPage, GCPhysPage, pRam);
2613	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2614	}
2615	}
2616	}
2617	}
2618
2619	return VINF_SUCCESS;
2620	}
2621
2622
2623	/**
2624	* Worker for pgmR3Load and pgmR3LoadLocked.
2625	*
2626	* @returns VBox status code.
2627	*
2628	* @param pVM Pointer to the VM.
2629	* @param pSSM The SSM handle.
2630	* @param uVersion The PGM saved state unit version.
2631	* @param uPass The pass number.
2632	*
2633	* @todo This needs splitting up if more record types or code twists are
2634	* added...
2635	*/
2636	static int pgmR3LoadMemory(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2637	{
2638	NOREF(uPass);
2639
2640	/*
2641	* Process page records until we hit the terminator.
2642	*/
2643	RTGCPHYS GCPhys = NIL_RTGCPHYS;
2644	PPGMRAMRANGE pRamHint = NULL;
2645	uint8_t id = UINT8_MAX;
2646	uint32_t iPage = UINT32_MAX - 10;
2647	PPGMROMRANGE pRom = NULL;
2648	PPGMMMIO2RANGE pMmio2 = NULL;
2649
2650	/*
2651	* We batch up pages that should be freed instead of calling GMM for
2652	* each and every one of them. Note that we'll lose the pages in most
2653	* failure paths - this should probably be addressed one day.
2654	*/
2655	uint32_t cPendingPages = 0;
2656	PGMMFREEPAGESREQ pReq;
2657	int rc = GMMR3FreePagesPrepare(pVM, &pReq, 128 /* batch size */, GMMACCOUNT_BASE);
2658	AssertLogRelRCReturn(rc, rc);
2659
2660	for (;;)
2661	{
2662	/*
2663	* Get the record type and flags.
2664	*/
2665	uint8_t u8;
2666	rc = SSMR3GetU8(pSSM, &u8);
2667	if (RT_FAILURE(rc))
2668	return rc;
2669	if (u8 == PGM_STATE_REC_END)
2670	{
2671	/*
2672	* Finish off any pages pending freeing.
2673	*/
2674	if (cPendingPages)
2675	{
2676	Log(("pgmR3LoadMemory: GMMR3FreePagesPerform pVM=%p cPendingPages=%u\n", pVM, cPendingPages));
2677	rc = GMMR3FreePagesPerform(pVM, pReq, cPendingPages);
2678	AssertLogRelRCReturn(rc, rc);
2679	}
2680	GMMR3FreePagesCleanup(pReq);
2681	return VINF_SUCCESS;
2682	}
2683	AssertLogRelMsgReturn((u8 & ~PGM_STATE_REC_FLAG_ADDR) <= PGM_STATE_REC_LAST, ("%#x\n", u8), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2684	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2685	{
2686	/*
2687	* RAM page.
2688	*/
2689	case PGM_STATE_REC_RAM_ZERO:
2690	case PGM_STATE_REC_RAM_RAW:
2691	case PGM_STATE_REC_RAM_BALLOONED:
2692	{
2693	/*
2694	* Get the address and resolve it into a page descriptor.
2695	*/
2696	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2697	GCPhys += PAGE_SIZE;
2698	else
2699	{
2700	rc = SSMR3GetGCPhys(pSSM, &GCPhys);
2701	if (RT_FAILURE(rc))
2702	return rc;
2703	}
2704	AssertLogRelMsgReturn(!(GCPhys & PAGE_OFFSET_MASK), ("%RGp\n", GCPhys), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2705
2706	PPGMPAGE pPage;
2707	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
2708	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2709
2710	/*
2711	* Take action according to the record type.
2712	*/
2713	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2714	{
2715	case PGM_STATE_REC_RAM_ZERO:
2716	{
2717	if (PGM_PAGE_IS_ZERO(pPage))
2718	break;
2719
2720	/* Ballooned pages must be unmarked (live snapshot and
2721	teleportation scenarios). */
2722	if (PGM_PAGE_IS_BALLOONED(pPage))
2723	{
2724	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2725	if (uVersion == PGM_SAVED_STATE_VERSION_BALLOON_BROKEN)
2726	break;
2727	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ZERO);
2728	break;
2729	}
2730
2731	AssertLogRelMsgReturn(PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_ALLOCATED, ("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_UNEXPECTED_PAGE_STATE);
2732
2733	/* If this is a ROM page, we must clear it and not try to
2734	* free it. Ditto if the VM is using RamPreAlloc (see
2735	* @bugref{6318}). */
2736	if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM
2737	\|\| PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM_SHADOW
2738	\|\| pVM->pgm.s.fRamPreAlloc)
2739	{
2740	PGMPAGEMAPLOCK PgMpLck;
2741	void *pvDstPage;
2742	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2743	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2744
2745	ASMMemZeroPage(pvDstPage);
2746	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2747	}
2748	/* Free it only if it's not part of a previously
2749	allocated large page (no need to clear the page). */
2750	else if ( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2751	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED)
2752	{
2753	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys);
2754	AssertRCReturn(rc, rc);
2755	}
2756	/** @todo handle large pages (see @bugref{5545}) */
2757	break;
2758	}
2759
2760	case PGM_STATE_REC_RAM_BALLOONED:
2761	{
2762	Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
2763	if (PGM_PAGE_IS_BALLOONED(pPage))
2764	break;
2765
2766	/* We don't map ballooned pages in our shadow page tables, let's
2767	just free it if allocated and mark as ballooned. See @bugref{5515}. */
2768	if (PGM_PAGE_IS_ALLOCATED(pPage))
2769	{
2770	/** @todo handle large pages + ballooning when it works. (see @bugref{5515},
2771	* @bugref{5545}). */
2772	AssertLogRelMsgReturn( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
2773	&& PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED,
2774	("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_LOAD_UNEXPECTED_PAGE_TYPE);
2775
2776	rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys);
2777	AssertRCReturn(rc, rc);
2778	}
2779	Assert(PGM_PAGE_IS_ZERO(pPage));
2780	PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_BALLOONED);
2781	break;
2782	}
2783
2784	case PGM_STATE_REC_RAM_RAW:
2785	{
2786	PGMPAGEMAPLOCK PgMpLck;
2787	void *pvDstPage;
2788	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
2789	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
2790	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2791	pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
2792	if (RT_FAILURE(rc))
2793	return rc;
2794	break;
2795	}
2796
2797	default:
2798	AssertMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2799	}
2800	id = UINT8_MAX;
2801	break;
2802	}
2803
2804	/*
2805	* MMIO2 page.
2806	*/
2807	case PGM_STATE_REC_MMIO2_RAW:
2808	case PGM_STATE_REC_MMIO2_ZERO:
2809	{
2810	/*
2811	* Get the ID + page number and resolved that into a MMIO2 page.
2812	*/
2813	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2814	iPage++;
2815	else
2816	{
2817	SSMR3GetU8(pSSM, &id);
2818	rc = SSMR3GetU32(pSSM, &iPage);
2819	if (RT_FAILURE(rc))
2820	return rc;
2821	}
2822	if ( !pMmio2
2823	\|\| pMmio2->idSavedState != id)
2824	{
2825	for (pMmio2 = pVM->pgm.s.pMmio2RangesR3; pMmio2; pMmio2 = pMmio2->pNextR3)
2826	if (pMmio2->idSavedState == id)
2827	break;
2828	AssertLogRelMsgReturn(pMmio2, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_MMIO2_RANGE_NOT_FOUND);
2829	}
2830	AssertLogRelMsgReturn(iPage < (pMmio2->RamRange.cb >> PAGE_SHIFT), ("iPage=%#x cb=%RGp %s\n", iPage, pMmio2->RamRange.cb, pMmio2->RamRange.pszDesc), VERR_PGM_SAVED_MMIO2_PAGE_NOT_FOUND);
2831	void pvDstPage = (uint8_t )pMmio2->RamRange.pvR3 + ((size_t)iPage << PAGE_SHIFT);
2832
2833	/*
2834	* Load the page bits.
2835	*/
2836	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_MMIO2_ZERO)
2837	ASMMemZeroPage(pvDstPage);
2838	else
2839	{
2840	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2841	if (RT_FAILURE(rc))
2842	return rc;
2843	}
2844	GCPhys = NIL_RTGCPHYS;
2845	break;
2846	}
2847
2848	/*
2849	* ROM pages.
2850	*/
2851	case PGM_STATE_REC_ROM_VIRGIN:
2852	case PGM_STATE_REC_ROM_SHW_RAW:
2853	case PGM_STATE_REC_ROM_SHW_ZERO:
2854	case PGM_STATE_REC_ROM_PROT:
2855	{
2856	/*
2857	* Get the ID + page number and resolved that into a ROM page descriptor.
2858	*/
2859	if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
2860	iPage++;
2861	else
2862	{
2863	SSMR3GetU8(pSSM, &id);
2864	rc = SSMR3GetU32(pSSM, &iPage);
2865	if (RT_FAILURE(rc))
2866	return rc;
2867	}
2868	if ( !pRom
2869	\|\| pRom->idSavedState != id)
2870	{
2871	for (pRom = pVM->pgm.s.pRomRangesR3; pRom; pRom = pRom->pNextR3)
2872	if (pRom->idSavedState == id)
2873	break;
2874	AssertLogRelMsgReturn(pRom, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_ROM_RANGE_NOT_FOUND);
2875	}
2876	AssertLogRelMsgReturn(iPage < (pRom->cb >> PAGE_SHIFT), ("iPage=%#x cb=%RGp %s\n", iPage, pRom->cb, pRom->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
2877	PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
2878	GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
2879
2880	/*
2881	* Get and set the protection.
2882	*/
2883	uint8_t u8Prot;
2884	rc = SSMR3GetU8(pSSM, &u8Prot);
2885	if (RT_FAILURE(rc))
2886	return rc;
2887	PGMROMPROT enmProt = (PGMROMPROT)u8Prot;
2888	AssertLogRelMsgReturn(enmProt > PGMROMPROT_INVALID && enmProt < PGMROMPROT_END, ("GCPhys=%RGp enmProt=%d\n", GCPhys, enmProt), VERR_PGM_SAVED_ROM_PAGE_PROT);
2889
2890	if (enmProt != pRomPage->enmProt)
2891	{
2892	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2893	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2894	N_("Protection change of unshadowed ROM page: GCPhys=%RGp enmProt=%d %s"),
2895	GCPhys, enmProt, pRom->pszDesc);
2896	rc = PGMR3PhysRomProtect(pVM, GCPhys, PAGE_SIZE, enmProt);
2897	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2898	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
2899	}
2900	if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_ROM_PROT)
2901	break; /* done */
2902
2903	/*
2904	* Get the right page descriptor.
2905	*/
2906	PPGMPAGE pRealPage;
2907	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2908	{
2909	case PGM_STATE_REC_ROM_VIRGIN:
2910	if (!PGMROMPROT_IS_ROM(enmProt))
2911	pRealPage = &pRomPage->Virgin;
2912	else
2913	pRealPage = NULL;
2914	break;
2915
2916	case PGM_STATE_REC_ROM_SHW_RAW:
2917	case PGM_STATE_REC_ROM_SHW_ZERO:
2918	if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
2919	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
2920	N_("Shadowed / non-shadowed page type mismatch: GCPhys=%RGp enmProt=%d %s"),
2921	GCPhys, enmProt, pRom->pszDesc);
2922	if (PGMROMPROT_IS_ROM(enmProt))
2923	pRealPage = &pRomPage->Shadow;
2924	else
2925	pRealPage = NULL;
2926	break;
2927
2928	default: AssertLogRelFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE); /* shut up gcc */
2929	}
2930	if (!pRealPage)
2931	{
2932	rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pRealPage, &pRamHint);
2933	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
2934	}
2935
2936	/*
2937	* Make it writable and map it (if necessary).
2938	*/
2939	void *pvDstPage = NULL;
2940	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2941	{
2942	case PGM_STATE_REC_ROM_SHW_ZERO:
2943	if ( PGM_PAGE_IS_ZERO(pRealPage)
2944	\|\| PGM_PAGE_IS_BALLOONED(pRealPage))
2945	break;
2946	/** @todo implement zero page replacing. */
2947	/* fall thru */
2948	case PGM_STATE_REC_ROM_VIRGIN:
2949	case PGM_STATE_REC_ROM_SHW_RAW:
2950	{
2951	rc = pgmPhysPageMakeWritableAndMap(pVM, pRealPage, GCPhys, &pvDstPage);
2952	AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
2953	break;
2954	}
2955	}
2956
2957	/*
2958	* Load the bits.
2959	*/
2960	switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
2961	{
2962	case PGM_STATE_REC_ROM_SHW_ZERO:
2963	if (pvDstPage)
2964	ASMMemZeroPage(pvDstPage);
2965	break;
2966
2967	case PGM_STATE_REC_ROM_VIRGIN:
2968	case PGM_STATE_REC_ROM_SHW_RAW:
2969	rc = SSMR3GetMem(pSSM, pvDstPage, PAGE_SIZE);
2970	if (RT_FAILURE(rc))
2971	return rc;
2972	break;
2973	}
2974	GCPhys = NIL_RTGCPHYS;
2975	break;
2976	}
2977
2978	/*
2979	* Unknown type.
2980	*/
2981	default:
2982	AssertLogRelMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
2983	}
2984	} /* forever */
2985	}
2986
2987
2988	/**
2989	* Worker for pgmR3Load.
2990	*
2991	* @returns VBox status code.
2992	*
2993	* @param pVM Pointer to the VM.
2994	* @param pSSM The SSM handle.
2995	* @param uVersion The saved state version.
2996	*/
2997	static int pgmR3LoadFinalLocked(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
2998	{
2999	PPGM pPGM = &pVM->pgm.s;
3000	int rc;
3001	uint32_t u32Sep;
3002
3003	/*
3004	* Load basic data (required / unaffected by relocation).
3005	*/
3006	if (uVersion >= PGM_SAVED_STATE_VERSION_3_0_0)
3007	{
3008	if (uVersion > PGM_SAVED_STATE_VERSION_PRE_BALLOON)
3009	rc = SSMR3GetStruct(pSSM, pPGM, &s_aPGMFields[0]);
3010	else
3011	rc = SSMR3GetStruct(pSSM, pPGM, &s_aPGMFieldsPreBalloon[0]);
3012
3013	AssertLogRelRCReturn(rc, rc);
3014
3015	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3016	{
3017	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
3018	rc = SSMR3GetStruct(pSSM, &pVM->aCpus[i].pgm.s, &s_aPGMCpuFieldsPrePae[0]);
3019	else
3020	rc = SSMR3GetStruct(pSSM, &pVM->aCpus[i].pgm.s, &s_aPGMCpuFields[0]);
3021	AssertLogRelRCReturn(rc, rc);
3022	}
3023	}
3024	else if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
3025	{
3026	AssertRelease(pVM->cCpus == 1);
3027
3028	PGMOLD pgmOld;
3029	rc = SSMR3GetStruct(pSSM, &pgmOld, &s_aPGMFields_Old[0]);
3030	AssertLogRelRCReturn(rc, rc);
3031
3032	pPGM->fMappingsFixed = pgmOld.fMappingsFixed;
3033	pPGM->GCPtrMappingFixed = pgmOld.GCPtrMappingFixed;
3034	pPGM->cbMappingFixed = pgmOld.cbMappingFixed;
3035
3036	pVM->aCpus[0].pgm.s.fA20Enabled = pgmOld.fA20Enabled;
3037	pVM->aCpus[0].pgm.s.GCPhysA20Mask = pgmOld.GCPhysA20Mask;
3038	pVM->aCpus[0].pgm.s.enmGuestMode = pgmOld.enmGuestMode;
3039	}
3040	else
3041	{
3042	AssertRelease(pVM->cCpus == 1);
3043
3044	SSMR3GetBool(pSSM, &pPGM->fMappingsFixed);
3045	SSMR3GetGCPtr(pSSM, &pPGM->GCPtrMappingFixed);
3046	SSMR3GetU32(pSSM, &pPGM->cbMappingFixed);
3047
3048	uint32_t cbRamSizeIgnored;
3049	rc = SSMR3GetU32(pSSM, &cbRamSizeIgnored);
3050	if (RT_FAILURE(rc))
3051	return rc;
3052	SSMR3GetGCPhys(pSSM, &pVM->aCpus[0].pgm.s.GCPhysA20Mask);
3053
3054	uint32_t u32 = 0;
3055	SSMR3GetUInt(pSSM, &u32);
3056	pVM->aCpus[0].pgm.s.fA20Enabled = !!u32;
3057	SSMR3GetUInt(pSSM, &pVM->aCpus[0].pgm.s.fSyncFlags);
3058	RTUINT uGuestMode;
3059	SSMR3GetUInt(pSSM, &uGuestMode);
3060	pVM->aCpus[0].pgm.s.enmGuestMode = (PGMMODE)uGuestMode;
3061
3062	/* check separator. */
3063	SSMR3GetU32(pSSM, &u32Sep);
3064	if (RT_FAILURE(rc))
3065	return rc;
3066	if (u32Sep != (uint32_t)~0)
3067	{
3068	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
3069	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
3070	}
3071	}
3072
3073	/*
3074	* Fix the A20 mask.
3075	*/
3076	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3077	pVM->aCpus[i].pgm.s.GCPhysA20Mask = ~(RTGCPHYS)(!pVM->aCpus[i].pgm.s.fA20Enabled << 20);
3078
3079	/*
3080	* The guest mappings - skipped now, see re-fixation in the caller.
3081	*/
3082	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
3083	{
3084	for (uint32_t i = 0; ; i++)
3085	{
3086	rc = SSMR3GetU32(pSSM, &u32Sep); /* sequence number */
3087	if (RT_FAILURE(rc))
3088	return rc;
3089	if (u32Sep == ~0U)
3090	break;
3091	AssertMsgReturn(u32Sep == i, ("u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
3092
3093	char szDesc[256];
3094	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
3095	if (RT_FAILURE(rc))
3096	return rc;
3097	RTGCPTR GCPtrIgnore;
3098	SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* GCPtr */
3099	rc = SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* cPTs */
3100	if (RT_FAILURE(rc))
3101	return rc;
3102	}
3103	}
3104
3105	/*
3106	* Load the RAM contents.
3107	*/
3108	if (uVersion > PGM_SAVED_STATE_VERSION_3_0_0)
3109	{
3110	if (!pVM->pgm.s.LiveSave.fActive)
3111	{
3112	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3113	{
3114	rc = pgmR3LoadRamConfig(pVM, pSSM);
3115	if (RT_FAILURE(rc))
3116	return rc;
3117	}
3118	rc = pgmR3LoadRomRanges(pVM, pSSM);
3119	if (RT_FAILURE(rc))
3120	return rc;
3121	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3122	if (RT_FAILURE(rc))
3123	return rc;
3124	}
3125
3126	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, SSM_PASS_FINAL);
3127	}
3128	else
3129	rc = pgmR3LoadMemoryOld(pVM, pSSM, uVersion);
3130
3131	/* Refresh balloon accounting. */
3132	if (pVM->pgm.s.cBalloonedPages)
3133	{
3134	Log(("pgmR3LoadFinalLocked: pVM=%p cBalloonedPages=%#x\n", pVM, pVM->pgm.s.cBalloonedPages));
3135	rc = GMMR3BalloonedPages(pVM, GMMBALLOONACTION_INFLATE, pVM->pgm.s.cBalloonedPages);
3136	AssertRCReturn(rc, rc);
3137	}
3138	return rc;
3139	}
3140
3141
3142	/**
3143	* Execute state load operation.
3144	*
3145	* @returns VBox status code.
3146	* @param pVM Pointer to the VM.
3147	* @param pSSM SSM operation handle.
3148	* @param uVersion Data layout version.
3149	* @param uPass The data pass.
3150	*/
3151	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
3152	{
3153	int rc;
3154
3155	/*
3156	* Validate version.
3157	*/
3158	if ( ( uPass != SSM_PASS_FINAL
3159	&& uVersion != PGM_SAVED_STATE_VERSION
3160	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3161	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3162	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3163	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3164	\|\| ( uVersion != PGM_SAVED_STATE_VERSION
3165	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3166	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3167	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3168	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG
3169	&& uVersion != PGM_SAVED_STATE_VERSION_3_0_0
3170	&& uVersion != PGM_SAVED_STATE_VERSION_2_2_2
3171	&& uVersion != PGM_SAVED_STATE_VERSION_RR_DESC
3172	&& uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
3173	)
3174	{
3175	AssertMsgFailed(("pgmR3Load: Invalid version uVersion=%d (current %d)!\n", uVersion, PGM_SAVED_STATE_VERSION));
3176	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3177	}
3178
3179	/*
3180	* Do the loading while owning the lock because a bunch of the functions
3181	* we're using requires this.
3182	*/
3183	if (uPass != SSM_PASS_FINAL)
3184	{
3185	pgmLock(pVM);
3186	if (uPass != 0)
3187	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3188	else
3189	{
3190	pVM->pgm.s.LiveSave.fActive = true;
3191	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3192	rc = pgmR3LoadRamConfig(pVM, pSSM);
3193	else
3194	rc = VINF_SUCCESS;
3195	if (RT_SUCCESS(rc))
3196	rc = pgmR3LoadRomRanges(pVM, pSSM);
3197	if (RT_SUCCESS(rc))
3198	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3199	if (RT_SUCCESS(rc))
3200	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3201	}
3202	pgmUnlock(pVM);
3203	}
3204	else
3205	{
3206	pgmLock(pVM);
3207	rc = pgmR3LoadFinalLocked(pVM, pSSM, uVersion);
3208	pVM->pgm.s.LiveSave.fActive = false;
3209	pgmUnlock(pVM);
3210	if (RT_SUCCESS(rc))
3211	{
3212	/*
3213	* We require a full resync now.
3214	*/
3215	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3216	{
3217	PVMCPU pVCpu = &pVM->aCpus[i];
3218	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3219	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3220	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3221	/** @todo For guest PAE, we might get the wrong
3222	* aGCPhysGstPaePDs values now. We should used the
3223	* saved ones... Postponing this since it nothing new
3224	* and PAE/PDPTR needs some general readjusting, see
3225	* @bugref{5880}. */
3226	}
3227
3228	pgmR3HandlerPhysicalUpdateAll(pVM);
3229
3230	/*
3231	* Change the paging mode and restore PGMCPU::GCPhysCR3.
3232	* (The latter requires the CPUM state to be restored already.)
3233	*/
3234	if (CPUMR3IsStateRestorePending(pVM))
3235	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3236	N_("PGM was unexpectedly restored before CPUM"));
3237
3238	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3239	{
3240	PVMCPU pVCpu = &pVM->aCpus[i];
3241
3242	rc = PGMR3ChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode);
3243	AssertLogRelRCReturn(rc, rc);
3244
3245	/* Update pVM->pgm.s.GCPhysCR3. */
3246	Assert(pVCpu->pgm.s.GCPhysCR3 == NIL_RTGCPHYS \|\| FTMIsDeltaLoadSaveActive(pVM));
3247	RTGCPHYS GCPhysCR3 = CPUMGetGuestCR3(pVCpu);
3248	if ( pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE
3249	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE_NX
3250	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64
3251	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64_NX)
3252	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAE_PAGE_MASK);
3253	else
3254	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAGE_MASK);
3255	pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
3256
3257	/* Update the PSE, NX flags and validity masks. */
3258	pVCpu->pgm.s.fGst32BitPageSizeExtension = CPUMIsGuestPageSizeExtEnabled(pVCpu);
3259	PGMNotifyNxeChanged(pVCpu, CPUMIsGuestNXEnabled(pVCpu));
3260	}
3261
3262	/*
3263	* Try re-fixate the guest mappings.
3264	*/
3265	pVM->pgm.s.fMappingsFixedRestored = false;
3266	if ( pVM->pgm.s.fMappingsFixed
3267	&& pgmMapAreMappingsEnabled(pVM))
3268	{
3269	#ifndef PGM_WITHOUT_MAPPINGS
3270	RTGCPTR GCPtrFixed = pVM->pgm.s.GCPtrMappingFixed;
3271	uint32_t cbFixed = pVM->pgm.s.cbMappingFixed;
3272	pVM->pgm.s.fMappingsFixed = false;
3273
3274	uint32_t cbRequired;
3275	int rc2 = PGMR3MappingsSize(pVM, &cbRequired); AssertRC(rc2);
3276	if ( RT_SUCCESS(rc2)
3277	&& cbRequired > cbFixed)
3278	rc2 = VERR_OUT_OF_RANGE;
3279	if (RT_SUCCESS(rc2))
3280	rc2 = pgmR3MappingsFixInternal(pVM, GCPtrFixed, cbFixed);
3281	if (RT_FAILURE(rc2))
3282	{
3283	LogRel(("PGM: Unable to re-fixate the guest mappings at %RGv-%RGv: rc=%Rrc (cbRequired=%#x)\n",
3284	GCPtrFixed, GCPtrFixed + cbFixed, rc2, cbRequired));
3285	pVM->pgm.s.fMappingsFixed = false;
3286	pVM->pgm.s.fMappingsFixedRestored = true;
3287	pVM->pgm.s.GCPtrMappingFixed = GCPtrFixed;
3288	pVM->pgm.s.cbMappingFixed = cbFixed;
3289	}
3290	#else
3291	AssertFailed();
3292	#endif
3293	}
3294	else
3295	{
3296	/* We used to set fixed + disabled while we only use disabled now,
3297	so wipe the state to avoid any confusion. */
3298	pVM->pgm.s.fMappingsFixed = false;
3299	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
3300	pVM->pgm.s.cbMappingFixed = 0;
3301	}
3302
3303	/*
3304	* If we have floating mappings, do a CR3 sync now to make sure the HMA
3305	* doesn't conflict with guest code / data and thereby cause trouble
3306	* when restoring other components like PATM.
3307	*/
3308	if (pgmMapAreMappingsFloating(pVM))
3309	{
3310	PVMCPU pVCpu = &pVM->aCpus[0];
3311	rc = PGMSyncCR3(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu), true);
3312	if (RT_FAILURE(rc))
3313	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3314	N_("PGMSyncCR3 failed unexpectedly with rc=%Rrc"), rc);
3315
3316	/* Make sure to re-sync before executing code. */
3317	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3318	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3319	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3320	}
3321	}
3322	}
3323
3324	return rc;
3325	}
3326
3327
3328	/**
3329	* Registers the saved state callbacks with SSM.
3330	*
3331	* @returns VBox status code.
3332	* @param pVM Pointer to VM.
3333	* @param cbRam The RAM size.
3334	*/
3335	int pgmR3InitSavedState(PVM pVM, uint64_t cbRam)
3336	{
3337	return SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
3338	pgmR3LivePrep, pgmR3LiveExec, pgmR3LiveVote,
3339	NULL, pgmR3SaveExec, pgmR3SaveDone,
3340	pgmR3LoadPrep, pgmR3Load, NULL);
3341	}
3342

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMSavedState.cpp@ 52654

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