PGMSavedState.cpp@ 52692

Last change on this file since 52692 was 52692, checked in by vboxsync, 10 years ago
VMM: properly restore A20 from the saved state (fixes potential misbehavior after restoring a VM from a saved state with A20 disabled)
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 127.5 KB

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1	/* $Id: PGMSavedState.cpp 52692 2014-09-11 11:46:59Z 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	{
3078	PVMCPU pVCpu = &pVM->aCpus[i];
3079	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVM->aCpus[i].pgm.s.fA20Enabled << 20);
3080	pgmR3RefreshShadowModeAfterA20Change(pVCpu);
3081	}
3082
3083	/*
3084	* The guest mappings - skipped now, see re-fixation in the caller.
3085	*/
3086	if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
3087	{
3088	for (uint32_t i = 0; ; i++)
3089	{
3090	rc = SSMR3GetU32(pSSM, &u32Sep); /* sequence number */
3091	if (RT_FAILURE(rc))
3092	return rc;
3093	if (u32Sep == ~0U)
3094	break;
3095	AssertMsgReturn(u32Sep == i, ("u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
3096
3097	char szDesc[256];
3098	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
3099	if (RT_FAILURE(rc))
3100	return rc;
3101	RTGCPTR GCPtrIgnore;
3102	SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* GCPtr */
3103	rc = SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* cPTs */
3104	if (RT_FAILURE(rc))
3105	return rc;
3106	}
3107	}
3108
3109	/*
3110	* Load the RAM contents.
3111	*/
3112	if (uVersion > PGM_SAVED_STATE_VERSION_3_0_0)
3113	{
3114	if (!pVM->pgm.s.LiveSave.fActive)
3115	{
3116	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3117	{
3118	rc = pgmR3LoadRamConfig(pVM, pSSM);
3119	if (RT_FAILURE(rc))
3120	return rc;
3121	}
3122	rc = pgmR3LoadRomRanges(pVM, pSSM);
3123	if (RT_FAILURE(rc))
3124	return rc;
3125	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3126	if (RT_FAILURE(rc))
3127	return rc;
3128	}
3129
3130	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, SSM_PASS_FINAL);
3131	}
3132	else
3133	rc = pgmR3LoadMemoryOld(pVM, pSSM, uVersion);
3134
3135	/* Refresh balloon accounting. */
3136	if (pVM->pgm.s.cBalloonedPages)
3137	{
3138	Log(("pgmR3LoadFinalLocked: pVM=%p cBalloonedPages=%#x\n", pVM, pVM->pgm.s.cBalloonedPages));
3139	rc = GMMR3BalloonedPages(pVM, GMMBALLOONACTION_INFLATE, pVM->pgm.s.cBalloonedPages);
3140	AssertRCReturn(rc, rc);
3141	}
3142	return rc;
3143	}
3144
3145
3146	/**
3147	* Execute state load operation.
3148	*
3149	* @returns VBox status code.
3150	* @param pVM Pointer to the VM.
3151	* @param pSSM SSM operation handle.
3152	* @param uVersion Data layout version.
3153	* @param uPass The data pass.
3154	*/
3155	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
3156	{
3157	int rc;
3158
3159	/*
3160	* Validate version.
3161	*/
3162	if ( ( uPass != SSM_PASS_FINAL
3163	&& uVersion != PGM_SAVED_STATE_VERSION
3164	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3165	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3166	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3167	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3168	\|\| ( uVersion != PGM_SAVED_STATE_VERSION
3169	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
3170	&& uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
3171	&& uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
3172	&& uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG
3173	&& uVersion != PGM_SAVED_STATE_VERSION_3_0_0
3174	&& uVersion != PGM_SAVED_STATE_VERSION_2_2_2
3175	&& uVersion != PGM_SAVED_STATE_VERSION_RR_DESC
3176	&& uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
3177	)
3178	{
3179	AssertMsgFailed(("pgmR3Load: Invalid version uVersion=%d (current %d)!\n", uVersion, PGM_SAVED_STATE_VERSION));
3180	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3181	}
3182
3183	/*
3184	* Do the loading while owning the lock because a bunch of the functions
3185	* we're using requires this.
3186	*/
3187	if (uPass != SSM_PASS_FINAL)
3188	{
3189	pgmLock(pVM);
3190	if (uPass != 0)
3191	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3192	else
3193	{
3194	pVM->pgm.s.LiveSave.fActive = true;
3195	if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
3196	rc = pgmR3LoadRamConfig(pVM, pSSM);
3197	else
3198	rc = VINF_SUCCESS;
3199	if (RT_SUCCESS(rc))
3200	rc = pgmR3LoadRomRanges(pVM, pSSM);
3201	if (RT_SUCCESS(rc))
3202	rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
3203	if (RT_SUCCESS(rc))
3204	rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
3205	}
3206	pgmUnlock(pVM);
3207	}
3208	else
3209	{
3210	pgmLock(pVM);
3211	rc = pgmR3LoadFinalLocked(pVM, pSSM, uVersion);
3212	pVM->pgm.s.LiveSave.fActive = false;
3213	pgmUnlock(pVM);
3214	if (RT_SUCCESS(rc))
3215	{
3216	/*
3217	* We require a full resync now.
3218	*/
3219	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3220	{
3221	PVMCPU pVCpu = &pVM->aCpus[i];
3222	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3223	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3224	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3225	/** @todo For guest PAE, we might get the wrong
3226	* aGCPhysGstPaePDs values now. We should used the
3227	* saved ones... Postponing this since it nothing new
3228	* and PAE/PDPTR needs some general readjusting, see
3229	* @bugref{5880}. */
3230	}
3231
3232	pgmR3HandlerPhysicalUpdateAll(pVM);
3233
3234	/*
3235	* Change the paging mode and restore PGMCPU::GCPhysCR3.
3236	* (The latter requires the CPUM state to be restored already.)
3237	*/
3238	if (CPUMR3IsStateRestorePending(pVM))
3239	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3240	N_("PGM was unexpectedly restored before CPUM"));
3241
3242	for (VMCPUID i = 0; i < pVM->cCpus; i++)
3243	{
3244	PVMCPU pVCpu = &pVM->aCpus[i];
3245
3246	rc = PGMR3ChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode);
3247	AssertLogRelRCReturn(rc, rc);
3248
3249	/* Update pVM->pgm.s.GCPhysCR3. */
3250	Assert(pVCpu->pgm.s.GCPhysCR3 == NIL_RTGCPHYS \|\| FTMIsDeltaLoadSaveActive(pVM));
3251	RTGCPHYS GCPhysCR3 = CPUMGetGuestCR3(pVCpu);
3252	if ( pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE
3253	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE_NX
3254	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64
3255	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64_NX)
3256	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAE_PAGE_MASK);
3257	else
3258	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAGE_MASK);
3259	pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
3260
3261	/* Update the PSE, NX flags and validity masks. */
3262	pVCpu->pgm.s.fGst32BitPageSizeExtension = CPUMIsGuestPageSizeExtEnabled(pVCpu);
3263	PGMNotifyNxeChanged(pVCpu, CPUMIsGuestNXEnabled(pVCpu));
3264	}
3265
3266	/*
3267	* Try re-fixate the guest mappings.
3268	*/
3269	pVM->pgm.s.fMappingsFixedRestored = false;
3270	if ( pVM->pgm.s.fMappingsFixed
3271	&& pgmMapAreMappingsEnabled(pVM))
3272	{
3273	#ifndef PGM_WITHOUT_MAPPINGS
3274	RTGCPTR GCPtrFixed = pVM->pgm.s.GCPtrMappingFixed;
3275	uint32_t cbFixed = pVM->pgm.s.cbMappingFixed;
3276	pVM->pgm.s.fMappingsFixed = false;
3277
3278	uint32_t cbRequired;
3279	int rc2 = PGMR3MappingsSize(pVM, &cbRequired); AssertRC(rc2);
3280	if ( RT_SUCCESS(rc2)
3281	&& cbRequired > cbFixed)
3282	rc2 = VERR_OUT_OF_RANGE;
3283	if (RT_SUCCESS(rc2))
3284	rc2 = pgmR3MappingsFixInternal(pVM, GCPtrFixed, cbFixed);
3285	if (RT_FAILURE(rc2))
3286	{
3287	LogRel(("PGM: Unable to re-fixate the guest mappings at %RGv-%RGv: rc=%Rrc (cbRequired=%#x)\n",
3288	GCPtrFixed, GCPtrFixed + cbFixed, rc2, cbRequired));
3289	pVM->pgm.s.fMappingsFixed = false;
3290	pVM->pgm.s.fMappingsFixedRestored = true;
3291	pVM->pgm.s.GCPtrMappingFixed = GCPtrFixed;
3292	pVM->pgm.s.cbMappingFixed = cbFixed;
3293	}
3294	#else
3295	AssertFailed();
3296	#endif
3297	}
3298	else
3299	{
3300	/* We used to set fixed + disabled while we only use disabled now,
3301	so wipe the state to avoid any confusion. */
3302	pVM->pgm.s.fMappingsFixed = false;
3303	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
3304	pVM->pgm.s.cbMappingFixed = 0;
3305	}
3306
3307	/*
3308	* If we have floating mappings, do a CR3 sync now to make sure the HMA
3309	* doesn't conflict with guest code / data and thereby cause trouble
3310	* when restoring other components like PATM.
3311	*/
3312	if (pgmMapAreMappingsFloating(pVM))
3313	{
3314	PVMCPU pVCpu = &pVM->aCpus[0];
3315	rc = PGMSyncCR3(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu), true);
3316	if (RT_FAILURE(rc))
3317	return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
3318	N_("PGMSyncCR3 failed unexpectedly with rc=%Rrc"), rc);
3319
3320	/* Make sure to re-sync before executing code. */
3321	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3322	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3323	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3324	}
3325	}
3326	}
3327
3328	return rc;
3329	}
3330
3331
3332	/**
3333	* Registers the saved state callbacks with SSM.
3334	*
3335	* @returns VBox status code.
3336	* @param pVM Pointer to VM.
3337	* @param cbRam The RAM size.
3338	*/
3339	int pgmR3InitSavedState(PVM pVM, uint64_t cbRam)
3340	{
3341	return SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
3342	pgmR3LivePrep, pgmR3LiveExec, pgmR3LiveVote,
3343	NULL, pgmR3SaveExec, pgmR3SaveDone,
3344	pgmR3LoadPrep, pgmR3Load, NULL);
3345	}
3346

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMSavedState.cpp@ 52692

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