PGMPool.cpp@ 105745

Last change on this file since 105745 was 104840, checked in by vboxsync, 6 months ago
VMM/PGM: Refactored RAM ranges, MMIO2 ranges and ROM ranges and added MMIO ranges (to PGM) so we can safely access RAM ranges at runtime w/o fear of them ever being freed up. It is now only possible to create these during VM creation and loading, and they will live till VM destruction (except for MMIO2 which could be destroyed during loading (PCNet fun)). The lookup handling is by table instead of pointer tree. No more ring-0 pointers in shared data. bugref:10687 bugref:10093
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File size: 74.4 KB

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1	/* $Id: PGMPool.cpp 104840 2024-06-05 00:59:51Z vboxsync $ */
2	/** @file
3	* PGM Shadow Page Pool.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	/** @page pg_pgm_pool PGM Shadow Page Pool
29	*
30	* Motivations:
31	* -# Relationship between shadow page tables and physical guest pages. This
32	* should allow us to skip most of the global flushes now following access
33	* handler changes. The main expense is flushing shadow pages.
34	* -# Limit the pool size if necessary (default is kind of limitless).
35	* -# Allocate shadow pages from RC. We use to only do this in SyncCR3.
36	* -# Required for 64-bit guests.
37	* -# Combining the PD cache and page pool in order to simplify caching.
38	*
39	*
40	* @section sec_pgm_pool_outline Design Outline
41	*
42	* The shadow page pool tracks pages used for shadowing paging structures (i.e.
43	* page tables, page directory, page directory pointer table and page map
44	* level-4). Each page in the pool has an unique identifier. This identifier is
45	* used to link a guest physical page to a shadow PT. The identifier is a
46	* non-zero value and has a relativly low max value - say 14 bits. This makes it
47	* possible to fit it into the upper bits of the of the aHCPhys entries in the
48	* ram range.
49	*
50	* By restricting host physical memory to the first 48 bits (which is the
51	* announced physical memory range of the K8L chip (scheduled for 2008)), we
52	* can safely use the upper 16 bits for shadow page ID and reference counting.
53	*
54	* Update: The 48 bit assumption will be lifted with the new physical memory
55	* management (PGMPAGE), so we won't have any trouble when someone stuffs 2TB
56	* into a box in some years.
57	*
58	* Now, it's possible for a page to be aliased, i.e. mapped by more than one PT
59	* or PD. This is solved by creating a list of physical cross reference extents
60	* when ever this happens. Each node in the list (extent) is can contain 3 page
61	* pool indexes. The list it self is chained using indexes into the paPhysExt
62	* array.
63	*
64	*
65	* @section sec_pgm_pool_life Life Cycle of a Shadow Page
66	*
67	* -# The SyncPT function requests a page from the pool.
68	* The request includes the kind of page it is (PT/PD, PAE/legacy), the
69	* address of the page it's shadowing, and more.
70	* -# The pool responds to the request by allocating a new page.
71	* When the cache is enabled, it will first check if it's in the cache.
72	* Should the pool be exhausted, one of two things can be done:
73	* -# Flush the whole pool and current CR3.
74	* -# Use the cache to find a page which can be flushed (~age).
75	* -# The SyncPT function will sync one or more pages and insert it into the
76	* shadow PD.
77	* -# The SyncPage function may sync more pages on a later \#PFs.
78	* -# The page is freed / flushed in SyncCR3 (perhaps) and some other cases.
79	* When caching is enabled, the page isn't flush but remains in the cache.
80	*
81	*
82	* @section sec_pgm_pool_monitoring Monitoring
83	*
84	* We always monitor GUEST_PAGE_SIZE chunks of memory. When we've got multiple
85	* shadow pages for the same GUEST_PAGE_SIZE of guest memory (PAE and mixed
86	* PD/PT) the pages sharing the monitor get linked using the
87	* iMonitoredNext/Prev. The head page is the pvUser to the access handlers.
88	*
89	*
90	* @section sec_pgm_pool_impl Implementation
91	*
92	* The pool will take pages from the MM page pool. The tracking data
93	* (attributes, bitmaps and so on) are allocated from the hypervisor heap. The
94	* pool content can be accessed both by using the page id and the physical
95	* address (HC). The former is managed by means of an array, the latter by an
96	* offset based AVL tree.
97	*
98	* Flushing of a pool page means that we iterate the content (we know what kind
99	* it is) and updates the link information in the ram range.
100	*
101	* ...
102	*/
103
104
105	/*********************************************************************************************************************************
106	* Header Files *
107	*********************************************************************************************************************************/
108	#define LOG_GROUP LOG_GROUP_PGM_POOL
109	#define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
110	#include <VBox/vmm/pgm.h>
111	#include <VBox/vmm/mm.h>
112	#include "PGMInternal.h"
113	#include <VBox/vmm/vmcc.h>
114	#include <VBox/vmm/uvm.h>
115	#include "PGMInline.h"
116
117	#include <VBox/log.h>
118	#include <VBox/err.h>
119	#include <iprt/asm-mem.h>
120	#include <iprt/string.h>
121	#include <VBox/dbg.h>
122
123
124	/*********************************************************************************************************************************
125	* Structures and Typedefs *
126	*********************************************************************************************************************************/
127	typedef struct PGMPOOLCHECKERSTATE
128	{
129	PDBGCCMDHLP pCmdHlp;
130	PVM pVM;
131	PPGMPOOL pPool;
132	PPGMPOOLPAGE pPage;
133	bool fFirstMsg;
134	uint32_t cErrors;
135	} PGMPOOLCHECKERSTATE;
136	typedef PGMPOOLCHECKERSTATE *PPGMPOOLCHECKERSTATE;
137
138
139
140	/*********************************************************************************************************************************
141	* Internal Functions *
142	*********************************************************************************************************************************/
143	static FNDBGFHANDLERINT pgmR3PoolInfoPages;
144	static FNDBGFHANDLERINT pgmR3PoolInfoRoots;
145
146	#ifdef VBOX_WITH_DEBUGGER
147	static FNDBGCCMD pgmR3PoolCmdCheck;
148
149	/** Command descriptors. */
150	static const DBGCCMD g_aCmds[] =
151	{
152	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
153	{ "pgmpoolcheck", 0, 0, NULL, 0, 0, pgmR3PoolCmdCheck, "", "Check the pgm pool pages." },
154	};
155	#endif
156
157	/**
158	* Initializes the pool
159	*
160	* @returns VBox status code.
161	* @param pVM The cross context VM structure.
162	*/
163	int pgmR3PoolInit(PVM pVM)
164	{
165	int rc;
166
167	AssertCompile(NIL_PGMPOOL_IDX == 0);
168	/* pPage->cLocked is an unsigned byte. */
169	AssertCompile(VMM_MAX_CPU_COUNT <= 255);
170
171	/*
172	* Query Pool config.
173	*/
174	PCFGMNODE pCfg = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM/Pool");
175
176	/* Default pgm pool size is 1024 pages (4MB). */
177	uint16_t cMaxPages = 1024;
178
179	/* Adjust it up relative to the RAM size, using the nested paging formula. */
180	uint64_t cbRam;
181	rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0); AssertRCReturn(rc, rc);
182	/** @todo guest x86 specific */
183	uint64_t u64MaxPages = (cbRam >> 9)
184	+ (cbRam >> 18)
185	+ (cbRam >> 27)
186	+ 32 * GUEST_PAGE_SIZE;
187	u64MaxPages >>= GUEST_PAGE_SHIFT;
188	if (u64MaxPages > PGMPOOL_IDX_LAST)
189	cMaxPages = PGMPOOL_IDX_LAST;
190	else
191	cMaxPages = (uint16_t)u64MaxPages;
192
193	/** @cfgm{/PGM/Pool/MaxPages, uint16_t, \#pages, 16, 0x3fff, F(ram-size)}
194	* The max size of the shadow page pool in pages. The pool will grow dynamically
195	* up to this limit.
196	*/
197	rc = CFGMR3QueryU16Def(pCfg, "MaxPages", &cMaxPages, cMaxPages);
198	AssertLogRelRCReturn(rc, rc);
199	AssertLogRelMsgReturn(cMaxPages <= PGMPOOL_IDX_LAST && cMaxPages >= RT_ALIGN(PGMPOOL_IDX_FIRST, 16),
200	("cMaxPages=%u (%#x)\n", cMaxPages, cMaxPages), VERR_INVALID_PARAMETER);
201	AssertCompile(RT_IS_POWER_OF_TWO(PGMPOOL_CFG_MAX_GROW));
202	if (cMaxPages < PGMPOOL_IDX_LAST)
203	cMaxPages = RT_ALIGN(cMaxPages, PGMPOOL_CFG_MAX_GROW / 2);
204	if (cMaxPages > PGMPOOL_IDX_LAST)
205	cMaxPages = PGMPOOL_IDX_LAST;
206	LogRel(("PGM: PGMPool: cMaxPages=%u (u64MaxPages=%llu)\n", cMaxPages, u64MaxPages));
207
208	/** @todo
209	* We need to be much more careful with our allocation strategy here.
210	* For nested paging we don't need pool user info nor extents at all, but
211	* we can't check for nested paging here (too early during init to get a
212	* confirmation it can be used). The default for large memory configs is a
213	* bit large for shadow paging, so I've restricted the extent maximum to 8k
214	* (8k * 16 = 128k of hyper heap).
215	*
216	* Also when large page support is enabled, we typically don't need so much,
217	* although that depends on the availability of 2 MB chunks on the host.
218	*/
219
220	/** @cfgm{/PGM/Pool/MaxUsers, uint16_t, \#users, MaxUsers, 32K, MaxPages*2}
221	* The max number of shadow page user tracking records. Each shadow page has
222	* zero of other shadow pages (or CR3s) that references it, or uses it if you
223	* like. The structures describing these relationships are allocated from a
224	* fixed sized pool. This configuration variable defines the pool size.
225	*/
226	uint16_t cMaxUsers;
227	rc = CFGMR3QueryU16Def(pCfg, "MaxUsers", &cMaxUsers, cMaxPages * 2);
228	AssertLogRelRCReturn(rc, rc);
229	AssertLogRelMsgReturn(cMaxUsers >= cMaxPages && cMaxPages <= _32K,
230	("cMaxUsers=%u (%#x)\n", cMaxUsers, cMaxUsers), VERR_INVALID_PARAMETER);
231
232	/** @cfgm{/PGM/Pool/MaxPhysExts, uint16_t, \#extents, 16, MaxPages * 2, MIN(MaxPages*2\,8192)}
233	* The max number of extents for tracking aliased guest pages.
234	*/
235	uint16_t cMaxPhysExts;
236	rc = CFGMR3QueryU16Def(pCfg, "MaxPhysExts", &cMaxPhysExts,
237	RT_MIN(cMaxPages * 2, 8192 /* 8Ki max as this eat too much hyper heap */));
238	AssertLogRelRCReturn(rc, rc);
239	AssertLogRelMsgReturn(cMaxPhysExts >= 16 && cMaxPhysExts <= PGMPOOL_IDX_LAST,
240	("cMaxPhysExts=%u (%#x)\n", cMaxPhysExts, cMaxPhysExts), VERR_INVALID_PARAMETER);
241
242	/** @cfgm{/PGM/Pool/ChacheEnabled, bool, true}
243	* Enables or disabling caching of shadow pages. Caching means that we will try
244	* reuse shadow pages instead of recreating them everything SyncCR3, SyncPT or
245	* SyncPage requests one. When reusing a shadow page, we can save time
246	* reconstructing it and it's children.
247	*/
248	bool fCacheEnabled;
249	rc = CFGMR3QueryBoolDef(pCfg, "CacheEnabled", &fCacheEnabled, true);
250	AssertLogRelRCReturn(rc, rc);
251
252	LogRel(("PGM: pgmR3PoolInit: cMaxPages=%#RX16 cMaxUsers=%#RX16 cMaxPhysExts=%#RX16 fCacheEnable=%RTbool\n",
253	cMaxPages, cMaxUsers, cMaxPhysExts, fCacheEnabled));
254
255	/*
256	* Allocate the data structures.
257	*/
258	uint32_t cb = RT_UOFFSETOF_DYN(PGMPOOL, aPages[cMaxPages]);
259	cb += cMaxUsers * sizeof(PGMPOOLUSER);
260	cb += cMaxPhysExts * sizeof(PGMPOOLPHYSEXT);
261	PPGMPOOL pPool;
262	RTR0PTR pPoolR0;
263	rc = SUPR3PageAllocEx(RT_ALIGN_32(cb, HOST_PAGE_SIZE) >> HOST_PAGE_SHIFT, 0 /fFlags/, (void **)&pPool, &pPoolR0, NULL);
264	if (RT_FAILURE(rc))
265	return rc;
266	Assert(ASMMemIsZero(pPool, cb));
267	pVM->pgm.s.pPoolR3 = pPool->pPoolR3 = pPool;
268	pVM->pgm.s.pPoolR0 = pPool->pPoolR0 = pPoolR0;
269
270	/*
271	* Initialize it.
272	*/
273	pPool->pVMR3 = pVM;
274	pPool->pVMR0 = pVM->pVMR0ForCall;
275	pPool->cMaxPages = cMaxPages;
276	pPool->cCurPages = PGMPOOL_IDX_FIRST;
277	pPool->iUserFreeHead = 0;
278	pPool->cMaxUsers = cMaxUsers;
279	PPGMPOOLUSER paUsers = (PPGMPOOLUSER)&pPool->aPages[pPool->cMaxPages];
280	pPool->paUsersR3 = paUsers;
281	pPool->paUsersR0 = pPoolR0 + (uintptr_t)paUsers - (uintptr_t)pPool;
282	for (unsigned i = 0; i < cMaxUsers; i++)
283	{
284	paUsers[i].iNext = i + 1;
285	paUsers[i].iUser = NIL_PGMPOOL_IDX;
286	paUsers[i].iUserTable = 0xfffffffe;
287	}
288	paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
289	pPool->iPhysExtFreeHead = 0;
290	pPool->cMaxPhysExts = cMaxPhysExts;
291	PPGMPOOLPHYSEXT paPhysExts = (PPGMPOOLPHYSEXT)&paUsers[cMaxUsers];
292	pPool->paPhysExtsR3 = paPhysExts;
293	pPool->paPhysExtsR0 = pPoolR0 + (uintptr_t)paPhysExts - (uintptr_t)pPool;
294	for (unsigned i = 0; i < cMaxPhysExts; i++)
295	{
296	paPhysExts[i].iNext = i + 1;
297	paPhysExts[i].aidx[0] = NIL_PGMPOOL_IDX;
298	paPhysExts[i].apte[0] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
299	paPhysExts[i].aidx[1] = NIL_PGMPOOL_IDX;
300	paPhysExts[i].apte[1] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
301	paPhysExts[i].aidx[2] = NIL_PGMPOOL_IDX;
302	paPhysExts[i].apte[2] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
303	}
304	paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
305	for (unsigned i = 0; i < RT_ELEMENTS(pPool->aiHash); i++)
306	pPool->aiHash[i] = NIL_PGMPOOL_IDX;
307	pPool->iAgeHead = NIL_PGMPOOL_IDX;
308	pPool->iAgeTail = NIL_PGMPOOL_IDX;
309	pPool->fCacheEnabled = fCacheEnabled;
310
311	pPool->hAccessHandlerType = NIL_PGMPHYSHANDLERTYPE;
312	rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_WRITE, PGMPHYSHANDLER_F_KEEP_PGM_LOCK,
313	pgmPoolAccessHandler, "Guest Paging Access Handler", &pPool->hAccessHandlerType);
314	AssertLogRelRCReturn(rc, rc);
315
316	pPool->HCPhysTree = 0;
317
318	/*
319	* The NIL entry.
320	*/
321	Assert(NIL_PGMPOOL_IDX == 0);
322	pPool->aPages[NIL_PGMPOOL_IDX].enmKind = PGMPOOLKIND_INVALID;
323	pPool->aPages[NIL_PGMPOOL_IDX].idx = NIL_PGMPOOL_IDX;
324	pPool->aPages[NIL_PGMPOOL_IDX].Core.Key = NIL_RTHCPHYS;
325	pPool->aPages[NIL_PGMPOOL_IDX].GCPhys = NIL_RTGCPHYS;
326	pPool->aPages[NIL_PGMPOOL_IDX].iNext = NIL_PGMPOOL_IDX;
327	/* pPool->aPages[NIL_PGMPOOL_IDX].cLocked = INT32_MAX; - test this out... */
328	pPool->aPages[NIL_PGMPOOL_IDX].pvPageR3 = 0;
329	pPool->aPages[NIL_PGMPOOL_IDX].iUserHead = NIL_PGMPOOL_USER_INDEX;
330	pPool->aPages[NIL_PGMPOOL_IDX].iModifiedNext = NIL_PGMPOOL_IDX;
331	pPool->aPages[NIL_PGMPOOL_IDX].iModifiedPrev = NIL_PGMPOOL_IDX;
332	pPool->aPages[NIL_PGMPOOL_IDX].iMonitoredNext = NIL_PGMPOOL_IDX;
333	pPool->aPages[NIL_PGMPOOL_IDX].iMonitoredPrev = NIL_PGMPOOL_IDX;
334	pPool->aPages[NIL_PGMPOOL_IDX].iAgeNext = NIL_PGMPOOL_IDX;
335	pPool->aPages[NIL_PGMPOOL_IDX].iAgePrev = NIL_PGMPOOL_IDX;
336
337	Assert(pPool->aPages[NIL_PGMPOOL_IDX].idx == NIL_PGMPOOL_IDX);
338	Assert(pPool->aPages[NIL_PGMPOOL_IDX].GCPhys == NIL_RTGCPHYS);
339	Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fSeenNonGlobal);
340	Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fMonitored);
341	Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fCached);
342	Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fZeroed);
343	Assert(!pPool->aPages[NIL_PGMPOOL_IDX].fReusedFlushPending);
344
345	/*
346	* Register statistics.
347	*/
348	STAM_REL_REG(pVM, &pPool->StatGrow, STAMTYPE_PROFILE, "/PGM/Pool/Grow", STAMUNIT_TICKS_PER_CALL, "Profiling PGMR0PoolGrow");
349	#ifdef VBOX_WITH_STATISTICS
350	STAM_REG(pVM, &pPool->cCurPages, STAMTYPE_U16, "/PGM/Pool/cCurPages", STAMUNIT_PAGES, "Current pool size.");
351	STAM_REG(pVM, &pPool->cMaxPages, STAMTYPE_U16, "/PGM/Pool/cMaxPages", STAMUNIT_PAGES, "Max pool size.");
352	STAM_REG(pVM, &pPool->cUsedPages, STAMTYPE_U16, "/PGM/Pool/cUsedPages", STAMUNIT_PAGES, "The number of pages currently in use.");
353	STAM_REG(pVM, &pPool->cUsedPagesHigh, STAMTYPE_U16_RESET, "/PGM/Pool/cUsedPagesHigh", STAMUNIT_PAGES, "The high watermark for cUsedPages.");
354	STAM_REG(pVM, &pPool->StatAlloc, STAMTYPE_PROFILE_ADV, "/PGM/Pool/Alloc", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolAlloc.");
355	STAM_REG(pVM, &pPool->StatClearAll, STAMTYPE_PROFILE, "/PGM/Pool/ClearAll", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmR3PoolClearAll.");
356	STAM_REG(pVM, &pPool->StatR3Reset, STAMTYPE_PROFILE, "/PGM/Pool/R3Reset", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmR3PoolReset.");
357	STAM_REG(pVM, &pPool->StatFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolFlushPage.");
358	STAM_REG(pVM, &pPool->StatFree, STAMTYPE_PROFILE, "/PGM/Pool/Free", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolFree.");
359	STAM_REG(pVM, &pPool->StatForceFlushPage, STAMTYPE_COUNTER, "/PGM/Pool/FlushForce", STAMUNIT_OCCURENCES, "Counting explicit flushes by PGMPoolFlushPage().");
360	STAM_REG(pVM, &pPool->StatForceFlushDirtyPage, STAMTYPE_COUNTER, "/PGM/Pool/FlushForceDirty", STAMUNIT_OCCURENCES, "Counting explicit flushes of dirty pages by PGMPoolFlushPage().");
361	STAM_REG(pVM, &pPool->StatForceFlushReused, STAMTYPE_COUNTER, "/PGM/Pool/FlushReused", STAMUNIT_OCCURENCES, "Counting flushes for reused pages.");
362	STAM_REG(pVM, &pPool->StatZeroPage, STAMTYPE_PROFILE, "/PGM/Pool/ZeroPage", STAMUNIT_TICKS_PER_CALL, "Profiling time spent zeroing pages. Overlaps with Alloc.");
363	STAM_REG(pVM, &pPool->cMaxUsers, STAMTYPE_U16, "/PGM/Pool/Track/cMaxUsers", STAMUNIT_COUNT, "Max user tracking records.");
364	STAM_REG(pVM, &pPool->cPresent, STAMTYPE_U32, "/PGM/Pool/Track/cPresent", STAMUNIT_COUNT, "Number of present page table entries.");
365	STAM_REG(pVM, &pPool->StatTrackDeref, STAMTYPE_PROFILE, "/PGM/Pool/Track/Deref", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackDeref.");
366	STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPT, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPT", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPT.");
367	STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPTs, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPTs", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPTs.");
368	STAM_REG(pVM, &pPool->StatTrackFlushGCPhysPTsSlow, STAMTYPE_PROFILE, "/PGM/Pool/Track/FlushGCPhysPTsSlow", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmPoolTrackFlushGCPhysPTsSlow.");
369	STAM_REG(pVM, &pPool->StatTrackFlushEntry, STAMTYPE_COUNTER, "/PGM/Pool/Track/Entry/Flush", STAMUNIT_COUNT, "Nr of flushed entries.");
370	STAM_REG(pVM, &pPool->StatTrackFlushEntryKeep, STAMTYPE_COUNTER, "/PGM/Pool/Track/Entry/Update", STAMUNIT_COUNT, "Nr of updated entries.");
371	STAM_REG(pVM, &pPool->StatTrackFreeUpOneUser, STAMTYPE_COUNTER, "/PGM/Pool/Track/FreeUpOneUser", STAMUNIT_TICKS_PER_CALL, "The number of times we were out of user tracking records.");
372	STAM_REG(pVM, &pPool->StatTrackDerefGCPhys, STAMTYPE_PROFILE, "/PGM/Pool/Track/DrefGCPhys", STAMUNIT_TICKS_PER_CALL, "Profiling deref activity related tracking GC physical pages.");
373	STAM_REG(pVM, &pPool->StatTrackLinearRamSearches, STAMTYPE_COUNTER, "/PGM/Pool/Track/LinearRamSearches", STAMUNIT_OCCURENCES, "The number of times we had to do linear ram searches.");
374	STAM_REG(pVM, &pPool->StamTrackPhysExtAllocFailures,STAMTYPE_COUNTER, "/PGM/Pool/Track/PhysExtAllocFailures", STAMUNIT_OCCURENCES, "The number of failing pgmPoolTrackPhysExtAlloc calls.");
375
376	STAM_REG(pVM, &pPool->StatMonitorPfRZ, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF", STAMUNIT_TICKS_PER_CALL, "Profiling the RC/R0 #PF access handler.");
377	STAM_REG(pVM, &pPool->StatMonitorPfRZEmulateInstr, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/EmulateInstr", STAMUNIT_OCCURENCES, "Times we've failed interpreting the instruction.");
378	STAM_REG(pVM, &pPool->StatMonitorPfRZFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the RC/R0 access handler.");
379	STAM_REG(pVM, &pPool->StatMonitorPfRZFlushReinit, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/FlushReinit", STAMUNIT_OCCURENCES, "Times we've detected a page table reinit.");
380	STAM_REG(pVM, &pPool->StatMonitorPfRZFlushModOverflow,STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/FlushOverflow", STAMUNIT_OCCURENCES, "Counting flushes for pages that are modified too often.");
381	STAM_REG(pVM, &pPool->StatMonitorPfRZFork, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/Fork", STAMUNIT_OCCURENCES, "Times we've detected fork().");
382	STAM_REG(pVM, &pPool->StatMonitorPfRZHandled, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/Handled", STAMUNIT_TICKS_PER_CALL, "Profiling the RC/R0 #PF access we've handled (except REP STOSD).");
383	STAM_REG(pVM, &pPool->StatMonitorPfRZIntrFailPatch1, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/IntrFailPatch1", STAMUNIT_OCCURENCES, "Times we've failed interpreting a patch code instruction.");
384	STAM_REG(pVM, &pPool->StatMonitorPfRZIntrFailPatch2, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/IntrFailPatch2", STAMUNIT_OCCURENCES, "Times we've failed interpreting a patch code instruction during flushing.");
385	STAM_REG(pVM, &pPool->StatMonitorPfRZRepPrefix, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/#PF/RepPrefix", STAMUNIT_OCCURENCES, "The number of times we've seen rep prefixes we can't handle.");
386	STAM_REG(pVM, &pPool->StatMonitorPfRZRepStosd, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/#PF/RepStosd", STAMUNIT_TICKS_PER_CALL, "Profiling the REP STOSD cases we've handled.");
387
388	STAM_REG(pVM, &pPool->StatMonitorRZ, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/IEM", STAMUNIT_TICKS_PER_CALL, "Profiling the regular access handler.");
389	STAM_REG(pVM, &pPool->StatMonitorRZFlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/RZ/IEM/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the regular access handler.");
390	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size01", STAMUNIT_OCCURENCES, "Number of 1 byte accesses.");
391	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size02", STAMUNIT_OCCURENCES, "Number of 2 byte accesses.");
392	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size03", STAMUNIT_OCCURENCES, "Number of 3 byte accesses.");
393	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size04", STAMUNIT_OCCURENCES, "Number of 4 byte accesses.");
394	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size05", STAMUNIT_OCCURENCES, "Number of 5 byte accesses.");
395	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size06", STAMUNIT_OCCURENCES, "Number of 6 byte accesses.");
396	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size07", STAMUNIT_OCCURENCES, "Number of 7 byte accesses.");
397	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[7], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size08", STAMUNIT_OCCURENCES, "Number of 8 byte accesses.");
398	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[8], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size09", STAMUNIT_OCCURENCES, "Number of 9 byte accesses.");
399	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[9], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0a", STAMUNIT_OCCURENCES, "Number of 10 byte accesses.");
400	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[10], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0b", STAMUNIT_OCCURENCES, "Number of 11 byte accesses.");
401	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[11], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0c", STAMUNIT_OCCURENCES, "Number of 12 byte accesses.");
402	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[12], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0d", STAMUNIT_OCCURENCES, "Number of 13 byte accesses.");
403	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[13], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0e", STAMUNIT_OCCURENCES, "Number of 14 byte accesses.");
404	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[14], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size0f", STAMUNIT_OCCURENCES, "Number of 15 byte accesses.");
405	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[15], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size10", STAMUNIT_OCCURENCES, "Number of 16 byte accesses.");
406	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[16], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size11-2f", STAMUNIT_OCCURENCES, "Number of 17-31 byte accesses.");
407	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[17], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size20-3f", STAMUNIT_OCCURENCES, "Number of 32-63 byte accesses.");
408	STAM_REG(pVM, &pPool->aStatMonitorRZSizes[18], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Size40+", STAMUNIT_OCCURENCES, "Number of 64+ byte accesses.");
409	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned1", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 1.");
410	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned2", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 2.");
411	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned3", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 3.");
412	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned4", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 4.");
413	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned5", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 5.");
414	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned6", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 6.");
415	STAM_REG(pVM, &pPool->aStatMonitorRZMisaligned[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/IEM/Misaligned7", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 7.");
416
417	STAM_REG(pVM, &pPool->StatMonitorRZFaultPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PT", STAMUNIT_OCCURENCES, "Nr of handled PT faults.");
418	STAM_REG(pVM, &pPool->StatMonitorRZFaultPD, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PD", STAMUNIT_OCCURENCES, "Nr of handled PD faults.");
419	STAM_REG(pVM, &pPool->StatMonitorRZFaultPDPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PDPT", STAMUNIT_OCCURENCES, "Nr of handled PDPT faults.");
420	STAM_REG(pVM, &pPool->StatMonitorRZFaultPML4, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/RZ/Fault/PML4", STAMUNIT_OCCURENCES, "Nr of handled PML4 faults.");
421
422	STAM_REG(pVM, &pPool->StatMonitorR3, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/R3", STAMUNIT_TICKS_PER_CALL, "Profiling the R3 access handler.");
423	STAM_REG(pVM, &pPool->StatMonitorR3FlushPage, STAMTYPE_PROFILE, "/PGM/Pool/Monitor/R3/FlushPage", STAMUNIT_TICKS_PER_CALL, "Profiling the pgmPoolFlushPage calls made from the R3 access handler.");
424	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size01", STAMUNIT_OCCURENCES, "Number of 1 byte accesses (R3).");
425	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size02", STAMUNIT_OCCURENCES, "Number of 2 byte accesses (R3).");
426	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size03", STAMUNIT_OCCURENCES, "Number of 3 byte accesses (R3).");
427	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size04", STAMUNIT_OCCURENCES, "Number of 4 byte accesses (R3).");
428	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size05", STAMUNIT_OCCURENCES, "Number of 5 byte accesses (R3).");
429	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size06", STAMUNIT_OCCURENCES, "Number of 6 byte accesses (R3).");
430	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size07", STAMUNIT_OCCURENCES, "Number of 7 byte accesses (R3).");
431	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[7], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size08", STAMUNIT_OCCURENCES, "Number of 8 byte accesses (R3).");
432	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[8], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size09", STAMUNIT_OCCURENCES, "Number of 9 byte accesses (R3).");
433	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[9], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0a", STAMUNIT_OCCURENCES, "Number of 10 byte accesses (R3).");
434	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[10], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0b", STAMUNIT_OCCURENCES, "Number of 11 byte accesses (R3).");
435	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[11], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0c", STAMUNIT_OCCURENCES, "Number of 12 byte accesses (R3).");
436	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[12], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0d", STAMUNIT_OCCURENCES, "Number of 13 byte accesses (R3).");
437	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[13], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0e", STAMUNIT_OCCURENCES, "Number of 14 byte accesses (R3).");
438	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[14], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size0f", STAMUNIT_OCCURENCES, "Number of 15 byte accesses (R3).");
439	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[15], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size10", STAMUNIT_OCCURENCES, "Number of 16 byte accesses (R3).");
440	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[16], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size11-2f", STAMUNIT_OCCURENCES, "Number of 17-31 byte accesses.");
441	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[17], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size20-3f", STAMUNIT_OCCURENCES, "Number of 32-63 byte accesses.");
442	STAM_REG(pVM, &pPool->aStatMonitorR3Sizes[18], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Size40+", STAMUNIT_OCCURENCES, "Number of 64+ byte accesses.");
443	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[0], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned1", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 1 in R3.");
444	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[1], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned2", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 2 in R3.");
445	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[2], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned3", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 3 in R3.");
446	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[3], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned4", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 4 in R3.");
447	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[4], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned5", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 5 in R3.");
448	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[5], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned6", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 6 in R3.");
449	STAM_REG(pVM, &pPool->aStatMonitorR3Misaligned[6], STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Misaligned7", STAMUNIT_OCCURENCES, "Number of misaligned access with offset 7 in R3.");
450
451	STAM_REG(pVM, &pPool->StatMonitorR3FaultPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PT", STAMUNIT_OCCURENCES, "Nr of handled PT faults.");
452	STAM_REG(pVM, &pPool->StatMonitorR3FaultPD, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PD", STAMUNIT_OCCURENCES, "Nr of handled PD faults.");
453	STAM_REG(pVM, &pPool->StatMonitorR3FaultPDPT, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PDPT", STAMUNIT_OCCURENCES, "Nr of handled PDPT faults.");
454	STAM_REG(pVM, &pPool->StatMonitorR3FaultPML4, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/R3/Fault/PML4", STAMUNIT_OCCURENCES, "Nr of handled PML4 faults.");
455
456	STAM_REG(pVM, &pPool->cModifiedPages, STAMTYPE_U16, "/PGM/Pool/Monitor/cModifiedPages", STAMUNIT_PAGES, "The current cModifiedPages value.");
457	STAM_REG(pVM, &pPool->cModifiedPagesHigh, STAMTYPE_U16_RESET, "/PGM/Pool/Monitor/cModifiedPagesHigh", STAMUNIT_PAGES, "The high watermark for cModifiedPages.");
458	STAM_REG(pVM, &pPool->StatResetDirtyPages, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/Resets", STAMUNIT_OCCURENCES, "Times we've called pgmPoolResetDirtyPages (and there were dirty page).");
459	STAM_REG(pVM, &pPool->StatDirtyPage, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/Pages", STAMUNIT_OCCURENCES, "Times we've called pgmPoolAddDirtyPage.");
460	STAM_REG(pVM, &pPool->StatDirtyPageDupFlush, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/FlushDup", STAMUNIT_OCCURENCES, "Times we've had to flush duplicates for dirty page management.");
461	STAM_REG(pVM, &pPool->StatDirtyPageOverFlowFlush, STAMTYPE_COUNTER, "/PGM/Pool/Monitor/Dirty/FlushOverflow",STAMUNIT_OCCURENCES, "Times we've had to flush because of overflow.");
462	STAM_REG(pVM, &pPool->StatCacheHits, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Hits", STAMUNIT_OCCURENCES, "The number of pgmPoolAlloc calls satisfied by the cache.");
463	STAM_REG(pVM, &pPool->StatCacheMisses, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Misses", STAMUNIT_OCCURENCES, "The number of pgmPoolAlloc calls not statisfied by the cache.");
464	STAM_REG(pVM, &pPool->StatCacheKindMismatches, STAMTYPE_COUNTER, "/PGM/Pool/Cache/KindMismatches", STAMUNIT_OCCURENCES, "The number of shadow page kind mismatches. (Better be low, preferably 0!)");
465	STAM_REG(pVM, &pPool->StatCacheFreeUpOne, STAMTYPE_COUNTER, "/PGM/Pool/Cache/FreeUpOne", STAMUNIT_OCCURENCES, "The number of times the cache was asked to free up a page.");
466	STAM_REG(pVM, &pPool->StatCacheCacheable, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Cacheable", STAMUNIT_OCCURENCES, "The number of cacheable allocations.");
467	STAM_REG(pVM, &pPool->StatCacheUncacheable, STAMTYPE_COUNTER, "/PGM/Pool/Cache/Uncacheable", STAMUNIT_OCCURENCES, "The number of uncacheable allocations.");
468	#endif /* VBOX_WITH_STATISTICS */
469
470	DBGFR3InfoRegisterInternalEx(pVM, "pgmpoolpages", "Lists page pool pages.", pgmR3PoolInfoPages, 0);
471	DBGFR3InfoRegisterInternalEx(pVM, "pgmpoolroots", "Lists page pool roots.", pgmR3PoolInfoRoots, 0);
472
473	#ifdef VBOX_WITH_DEBUGGER
474	/*
475	* Debugger commands.
476	*/
477	static bool s_fRegisteredCmds = false;
478	if (!s_fRegisteredCmds)
479	{
480	rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
481	if (RT_SUCCESS(rc))
482	s_fRegisteredCmds = true;
483	}
484	#endif
485
486	return VINF_SUCCESS;
487	}
488
489
490	/**
491	* Relocate the page pool data.
492	*
493	* @param pVM The cross context VM structure.
494	*/
495	void pgmR3PoolRelocate(PVM pVM)
496	{
497	RT_NOREF(pVM);
498	}
499
500
501	/**
502	* Grows the shadow page pool.
503	*
504	* I.e. adds more pages to it, assuming that hasn't reached cMaxPages yet.
505	*
506	* @returns VBox status code.
507	* @param pVM The cross context VM structure.
508	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
509	*/
510	VMMR3_INT_DECL(int) PGMR3PoolGrow(PVM pVM, PVMCPU pVCpu)
511	{
512	/* This used to do a lot of stuff, but it has moved to ring-0 (PGMR0PoolGrow). */
513	AssertReturn(pVM->pgm.s.pPoolR3->cCurPages < pVM->pgm.s.pPoolR3->cMaxPages, VERR_PGM_POOL_MAXED_OUT_ALREADY);
514	int rc = VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_PGM_POOL_GROW, 0, NULL);
515	if (rc == VINF_SUCCESS)
516	return rc;
517	LogRel(("PGMR3PoolGrow: rc=%Rrc cCurPages=%#x cMaxPages=%#x\n",
518	rc, pVM->pgm.s.pPoolR3->cCurPages, pVM->pgm.s.pPoolR3->cMaxPages));
519	if (pVM->pgm.s.pPoolR3->cCurPages > 128 && RT_FAILURE_NP(rc))
520	return -rc;
521	return rc;
522	}
523
524
525	/**
526	* Rendezvous callback used by pgmR3PoolClearAll that clears all shadow pages
527	* and all modification counters.
528	*
529	* This is only called on one of the EMTs while the other ones are waiting for
530	* it to complete this function.
531	*
532	* @returns VINF_SUCCESS (VBox strict status code).
533	* @param pVM The cross context VM structure.
534	* @param pVCpu The cross context virtual CPU structure of the calling EMT. Unused.
535	* @param fpvFlushRemTlb When not NULL, we'll flush the REM TLB as well.
536	* (This is the pvUser, so it has to be void *.)
537	*
538	*/
539	DECLCALLBACK(VBOXSTRICTRC) pgmR3PoolClearAllRendezvous(PVM pVM, PVMCPU pVCpu, void *fpvFlushRemTlb)
540	{
541	PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
542	STAM_PROFILE_START(&pPool->StatClearAll, c);
543	NOREF(pVCpu);
544
545	PGM_LOCK_VOID(pVM);
546	Log(("pgmR3PoolClearAllRendezvous: cUsedPages=%d fpvFlushRemTlb=%RTbool\n", pPool->cUsedPages, !!fpvFlushRemTlb));
547
548	/*
549	* Iterate all the pages until we've encountered all that are in use.
550	* This is a simple but not quite optimal solution.
551	*/
552	unsigned cModifiedPages = 0; NOREF(cModifiedPages);
553	unsigned cLeft = pPool->cUsedPages;
554	uint32_t iPage = pPool->cCurPages;
555	while (--iPage >= PGMPOOL_IDX_FIRST)
556	{
557	PPGMPOOLPAGE pPage = &pPool->aPages[iPage];
558	if (pPage->GCPhys != NIL_RTGCPHYS)
559	{
560	switch (pPage->enmKind)
561	{
562	/*
563	* We only care about shadow page tables that reference physical memory
564	*/
565	#ifdef PGM_WITH_LARGE_PAGES
566	case PGMPOOLKIND_PAE_PD_PHYS: /* Large pages reference 2 MB of physical memory, so we must clear them. */
567	if (pPage->cPresent)
568	{
569	PX86PDPAE pShwPD = (PX86PDPAE)PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
570	for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
571	{
572	//Assert((pShwPD->a[i].u & UINT64_C(0xfff0000000000f80)) == 0); - bogus, includes X86_PDE_PS.
573	if ((pShwPD->a[i].u & (X86_PDE_P \| X86_PDE_PS)) == (X86_PDE_P \| X86_PDE_PS))
574	{
575	pShwPD->a[i].u = 0;
576	Assert(pPage->cPresent);
577	pPage->cPresent--;
578	}
579	}
580	if (pPage->cPresent == 0)
581	pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
582	}
583	goto default_case;
584
585	case PGMPOOLKIND_EPT_PD_FOR_PHYS: /* Large pages reference 2 MB of physical memory, so we must clear them. */
586	if (pPage->cPresent)
587	{
588	PEPTPD pShwPD = (PEPTPD)PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
589	for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
590	{
591	if ((pShwPD->a[i].u & (EPT_E_READ \| EPT_E_LEAF)) == (EPT_E_READ \| EPT_E_LEAF))
592	{
593	pShwPD->a[i].u = 0;
594	Assert(pPage->cPresent);
595	pPage->cPresent--;
596	}
597	}
598	if (pPage->cPresent == 0)
599	pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
600	}
601	goto default_case;
602
603	# ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
604	case PGMPOOLKIND_EPT_PD_FOR_EPT_PD: /* Large pages reference 2 MB of physical memory, so we must clear them. */
605	if (pPage->cPresent)
606	{
607	PEPTPD pShwPD = (PEPTPD)PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
608	for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
609	{
610	if ( (pShwPD->a[i].u & EPT_PRESENT_MASK)
611	&& (pShwPD->a[i].u & EPT_E_LEAF))
612	{
613	pShwPD->a[i].u = 0;
614	Assert(pPage->cPresent);
615	pPage->cPresent--;
616	}
617	}
618	if (pPage->cPresent == 0)
619	pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
620	}
621	goto default_case;
622	# endif /* VBOX_WITH_NESTED_HWVIRT_VMX_EPT */
623	#endif /* PGM_WITH_LARGE_PAGES */
624
625	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT:
626	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB:
627	case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
628	case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
629	case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
630	case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
631	case PGMPOOLKIND_32BIT_PT_FOR_PHYS:
632	case PGMPOOLKIND_PAE_PT_FOR_PHYS:
633	case PGMPOOLKIND_EPT_PT_FOR_PHYS:
634	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
635	case PGMPOOLKIND_EPT_PT_FOR_EPT_PT:
636	case PGMPOOLKIND_EPT_PT_FOR_EPT_2MB:
637	case PGMPOOLKIND_EPT_PDPT_FOR_EPT_PDPT:
638	case PGMPOOLKIND_EPT_PML4_FOR_EPT_PML4:
639	#endif
640	{
641	if (pPage->cPresent)
642	{
643	void *pvShw = PGMPOOL_PAGE_2_PTR_V2(pPool->CTX_SUFF(pVM), pVCpu, pPage);
644	STAM_PROFILE_START(&pPool->StatZeroPage, z);
645	#if 0
646	/* Useful check for leaking references; very expensive though. */
647	switch (pPage->enmKind)
648	{
649	case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
650	case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
651	case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
652	case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
653	case PGMPOOLKIND_PAE_PT_FOR_PHYS:
654	{
655	bool fFoundFirst = false;
656	PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)pvShw;
657	for (unsigned ptIndex = 0; ptIndex < RT_ELEMENTS(pPT->a); ptIndex++)
658	{
659	if (pPT->a[ptIndex].u)
660	{
661	if (!fFoundFirst)
662	{
663	AssertFatalMsg(pPage->iFirstPresent <= ptIndex, ("ptIndex = %d first present = %d\n", ptIndex, pPage->iFirstPresent));
664	if (pPage->iFirstPresent != ptIndex)
665	Log(("ptIndex = %d first present = %d\n", ptIndex, pPage->iFirstPresent));
666	fFoundFirst = true;
667	}
668	if (PGMSHWPTEPAE_IS_P(pPT->a[ptIndex]))
669	{
670	pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pPT->a[ptIndex]), NIL_RTGCPHYS);
671	if (pPage->iFirstPresent == ptIndex)
672	pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
673	}
674	}
675	}
676	AssertFatalMsg(pPage->cPresent == 0, ("cPresent = %d pPage = %RGv\n", pPage->cPresent, pPage->GCPhys));
677	break;
678	}
679	default:
680	break;
681	}
682	#endif
683	RT_BZERO(pvShw, PAGE_SIZE);
684	STAM_PROFILE_STOP(&pPool->StatZeroPage, z);
685	pPage->cPresent = 0;
686	pPage->iFirstPresent = NIL_PGMPOOL_PRESENT_INDEX;
687	}
688	}
689	RT_FALL_THRU();
690	default:
691	#ifdef PGM_WITH_LARGE_PAGES
692	default_case:
693	#endif
694	Assert(!pPage->cModifications \|\| ++cModifiedPages);
695	Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX \|\| pPage->cModifications);
696	Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX \|\| pPage->cModifications);
697	pPage->iModifiedNext = NIL_PGMPOOL_IDX;
698	pPage->iModifiedPrev = NIL_PGMPOOL_IDX;
699	pPage->cModifications = 0;
700	break;
701
702	}
703	if (!--cLeft)
704	break;
705	}
706	}
707
708	#ifndef DEBUG_michael
709	AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
710	#endif
711	pPool->iModifiedHead = NIL_PGMPOOL_IDX;
712	pPool->cModifiedPages = 0;
713
714	/*
715	* Clear all the GCPhys links and rebuild the phys ext free list.
716	*/
717	uint32_t const idRamRangeMax = RT_MIN(pVM->pgm.s.idRamRangeMax, RT_ELEMENTS(pVM->pgm.s.apRamRanges) - 1U);
718	Assert(pVM->pgm.s.apRamRanges[0] == NULL);
719	for (uint32_t idx = 1; idx <= idRamRangeMax; idx++)
720	{
721	PPGMRAMRANGE const pRam = pVM->pgm.s.apRamRanges[idx];
722	iPage = pRam->cb >> GUEST_PAGE_SHIFT;
723	while (iPage-- > 0)
724	PGM_PAGE_SET_TRACKING(pVM, &pRam->aPages[iPage], 0);
725	}
726
727	pPool->iPhysExtFreeHead = 0;
728	PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
729	const unsigned cMaxPhysExts = pPool->cMaxPhysExts;
730	for (unsigned i = 0; i < cMaxPhysExts; i++)
731	{
732	paPhysExts[i].iNext = i + 1;
733	paPhysExts[i].aidx[0] = NIL_PGMPOOL_IDX;
734	paPhysExts[i].apte[0] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
735	paPhysExts[i].aidx[1] = NIL_PGMPOOL_IDX;
736	paPhysExts[i].apte[1] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
737	paPhysExts[i].aidx[2] = NIL_PGMPOOL_IDX;
738	paPhysExts[i].apte[2] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
739	}
740	paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
741
742
743	#ifdef PGMPOOL_WITH_OPTIMIZED_DIRTY_PT
744	/* Reset all dirty pages to reactivate the page monitoring. */
745	/* Note: we must do this after clearing all page references and shadow page tables as there might be stale references to
746	* recently removed MMIO ranges around that might otherwise end up asserting in pgmPoolTracDerefGCPhysHint
747	*/
748	for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
749	{
750	unsigned idxPage = pPool->aidxDirtyPages[i];
751	if (idxPage == NIL_PGMPOOL_IDX)
752	continue;
753
754	PPGMPOOLPAGE pPage = &pPool->aPages[idxPage];
755	Assert(pPage->idx == idxPage);
756	Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
757
758	AssertMsg(pPage->fDirty, ("Page %RGp (slot=%d) not marked dirty!", pPage->GCPhys, i));
759
760	Log(("Reactivate dirty page %RGp\n", pPage->GCPhys));
761
762	/* First write protect the page again to catch all write accesses. (before checking for changes -> SMP) */
763	int rc = PGMHandlerPhysicalReset(pVM, pPage->GCPhys & ~(RTGCPHYS)GUEST_PAGE_OFFSET_MASK);
764	AssertRCSuccess(rc);
765	pPage->fDirty = false;
766
767	pPool->aidxDirtyPages[i] = NIL_PGMPOOL_IDX;
768	}
769
770	/* Clear all dirty pages. */
771	pPool->idxFreeDirtyPage = 0;
772	pPool->cDirtyPages = 0;
773	#endif
774
775	/* Clear the PGM_SYNC_CLEAR_PGM_POOL flag on all VCPUs to prevent redundant flushes. */
776	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
777	pVM->apCpusR3[idCpu]->pgm.s.fSyncFlags &= ~PGM_SYNC_CLEAR_PGM_POOL;
778
779	/* Flush job finished. */
780	VM_FF_CLEAR(pVM, VM_FF_PGM_POOL_FLUSH_PENDING);
781	pPool->cPresent = 0;
782	PGM_UNLOCK(pVM);
783
784	PGM_INVL_ALL_VCPU_TLBS(pVM);
785
786	if (fpvFlushRemTlb)
787	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
788	CPUMSetChangedFlags(pVM->apCpusR3[idCpu], CPUM_CHANGED_GLOBAL_TLB_FLUSH);
789
790	STAM_PROFILE_STOP(&pPool->StatClearAll, c);
791	return VINF_SUCCESS;
792	}
793
794
795	/**
796	* Clears the shadow page pool.
797	*
798	* @param pVM The cross context VM structure.
799	* @param fFlushRemTlb When set, the REM TLB is scheduled for flushing as
800	* well.
801	*/
802	void pgmR3PoolClearAll(PVM pVM, bool fFlushRemTlb)
803	{
804	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, pgmR3PoolClearAllRendezvous, &fFlushRemTlb);
805	AssertRC(rc);
806	}
807
808
809	/**
810	* Stringifies a PGMPOOLACCESS value.
811	*/
812	static const char *pgmPoolPoolAccessToStr(uint8_t enmAccess)
813	{
814	switch ((PGMPOOLACCESS)enmAccess)
815	{
816	case PGMPOOLACCESS_DONTCARE: return "DONTCARE";
817	case PGMPOOLACCESS_USER_RW: return "USER_RW";
818	case PGMPOOLACCESS_USER_R: return "USER_R";
819	case PGMPOOLACCESS_USER_RW_NX: return "USER_RW_NX";
820	case PGMPOOLACCESS_USER_R_NX: return "USER_R_NX";
821	case PGMPOOLACCESS_SUPERVISOR_RW: return "SUPERVISOR_RW";
822	case PGMPOOLACCESS_SUPERVISOR_R: return "SUPERVISOR_R";
823	case PGMPOOLACCESS_SUPERVISOR_RW_NX: return "SUPERVISOR_RW_NX";
824	case PGMPOOLACCESS_SUPERVISOR_R_NX: return "SUPERVISOR_R_NX";
825	}
826	return "Unknown Access";
827	}
828
829
830	/**
831	* Stringifies a PGMPOOLKIND value.
832	*/
833	static const char *pgmPoolPoolKindToStr(uint8_t enmKind)
834	{
835	switch ((PGMPOOLKIND)enmKind)
836	{
837	case PGMPOOLKIND_INVALID:
838	return "INVALID";
839	case PGMPOOLKIND_FREE:
840	return "FREE";
841	case PGMPOOLKIND_32BIT_PT_FOR_PHYS:
842	return "32BIT_PT_FOR_PHYS";
843	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT:
844	return "32BIT_PT_FOR_32BIT_PT";
845	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB:
846	return "32BIT_PT_FOR_32BIT_4MB";
847	case PGMPOOLKIND_PAE_PT_FOR_PHYS:
848	return "PAE_PT_FOR_PHYS";
849	case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
850	return "PAE_PT_FOR_32BIT_PT";
851	case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
852	return "PAE_PT_FOR_32BIT_4MB";
853	case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
854	return "PAE_PT_FOR_PAE_PT";
855	case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
856	return "PAE_PT_FOR_PAE_2MB";
857	case PGMPOOLKIND_32BIT_PD:
858	return "32BIT_PD";
859	case PGMPOOLKIND_32BIT_PD_PHYS:
860	return "32BIT_PD_PHYS";
861	case PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD:
862	return "PAE_PD0_FOR_32BIT_PD";
863	case PGMPOOLKIND_PAE_PD1_FOR_32BIT_PD:
864	return "PAE_PD1_FOR_32BIT_PD";
865	case PGMPOOLKIND_PAE_PD2_FOR_32BIT_PD:
866	return "PAE_PD2_FOR_32BIT_PD";
867	case PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD:
868	return "PAE_PD3_FOR_32BIT_PD";
869	case PGMPOOLKIND_PAE_PD_FOR_PAE_PD:
870	return "PAE_PD_FOR_PAE_PD";
871	case PGMPOOLKIND_PAE_PD_PHYS:
872	return "PAE_PD_PHYS";
873	case PGMPOOLKIND_PAE_PDPT_FOR_32BIT:
874	return "PAE_PDPT_FOR_32BIT";
875	case PGMPOOLKIND_PAE_PDPT:
876	return "PAE_PDPT";
877	case PGMPOOLKIND_PAE_PDPT_PHYS:
878	return "PAE_PDPT_PHYS";
879	case PGMPOOLKIND_64BIT_PDPT_FOR_64BIT_PDPT:
880	return "64BIT_PDPT_FOR_64BIT_PDPT";
881	case PGMPOOLKIND_64BIT_PDPT_FOR_PHYS:
882	return "64BIT_PDPT_FOR_PHYS";
883	case PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD:
884	return "64BIT_PD_FOR_64BIT_PD";
885	case PGMPOOLKIND_64BIT_PD_FOR_PHYS:
886	return "64BIT_PD_FOR_PHYS";
887	case PGMPOOLKIND_64BIT_PML4:
888	return "64BIT_PML4";
889	case PGMPOOLKIND_EPT_PDPT_FOR_PHYS:
890	return "EPT_PDPT_FOR_PHYS";
891	case PGMPOOLKIND_EPT_PD_FOR_PHYS:
892	return "EPT_PD_FOR_PHYS";
893	case PGMPOOLKIND_EPT_PT_FOR_PHYS:
894	return "EPT_PT_FOR_PHYS";
895	case PGMPOOLKIND_ROOT_NESTED:
896	return "ROOT_NESTED";
897	case PGMPOOLKIND_EPT_PT_FOR_EPT_PT:
898	return "EPT_PT_FOR_EPT_PT";
899	case PGMPOOLKIND_EPT_PT_FOR_EPT_2MB:
900	return "EPT_PT_FOR_EPT_2MB";
901	case PGMPOOLKIND_EPT_PD_FOR_EPT_PD:
902	return "EPT_PD_FOR_EPT_PD";
903	case PGMPOOLKIND_EPT_PDPT_FOR_EPT_PDPT:
904	return "EPT_PDPT_FOR_EPT_PDPT";
905	case PGMPOOLKIND_EPT_PML4_FOR_EPT_PML4:
906	return "EPT_PML4_FOR_EPT_PML4";
907	}
908	return "Unknown kind!";
909	}
910
911
912	/**
913	* Protect all pgm pool page table entries to monitor writes
914	*
915	* @param pVM The cross context VM structure.
916	*
917	* @remarks ASSUMES the caller will flush all TLBs!!
918	*/
919	void pgmR3PoolWriteProtectPages(PVM pVM)
920	{
921	PGM_LOCK_ASSERT_OWNER(pVM);
922	PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
923	unsigned cLeft = pPool->cUsedPages;
924	unsigned iPage = pPool->cCurPages;
925	while (--iPage >= PGMPOOL_IDX_FIRST)
926	{
927	PPGMPOOLPAGE pPage = &pPool->aPages[iPage];
928	if ( pPage->GCPhys != NIL_RTGCPHYS
929	&& pPage->cPresent)
930	{
931	union
932	{
933	void *pv;
934	PX86PT pPT;
935	PPGMSHWPTPAE pPTPae;
936	PEPTPT pPTEpt;
937	} uShw;
938	uShw.pv = PGMPOOL_PAGE_2_PTR(pVM, pPage);
939
940	switch (pPage->enmKind)
941	{
942	/*
943	* We only care about shadow page tables.
944	*/
945	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT:
946	case PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB:
947	case PGMPOOLKIND_32BIT_PT_FOR_PHYS:
948	for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPT->a); iShw++)
949	if (uShw.pPT->a[iShw].u & X86_PTE_P)
950	uShw.pPT->a[iShw].u = ~(X86PGUINT)X86_PTE_RW;
951	break;
952
953	case PGMPOOLKIND_PAE_PT_FOR_32BIT_PT:
954	case PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB:
955	case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
956	case PGMPOOLKIND_PAE_PT_FOR_PAE_2MB:
957	case PGMPOOLKIND_PAE_PT_FOR_PHYS:
958	for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPTPae->a); iShw++)
959	if (PGMSHWPTEPAE_IS_P(uShw.pPTPae->a[iShw]))
960	PGMSHWPTEPAE_SET_RO(uShw.pPTPae->a[iShw]);
961	break;
962
963	case PGMPOOLKIND_EPT_PT_FOR_PHYS:
964	for (unsigned iShw = 0; iShw < RT_ELEMENTS(uShw.pPTEpt->a); iShw++)
965	if (uShw.pPTEpt->a[iShw].u & EPT_E_READ)
966	uShw.pPTEpt->a[iShw].u &= ~(X86PGPAEUINT)EPT_E_WRITE;
967	break;
968
969	default:
970	break;
971	}
972	if (!--cLeft)
973	break;
974	}
975	}
976	}
977
978
979	/**
980	* @callback_method_impl{FNDBGFHANDLERINT, pgmpoolpages}
981	*/
982	static DECLCALLBACK(void) pgmR3PoolInfoPages(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
983	{
984	RT_NOREF(pszArgs);
985
986	PPGMPOOL const pPool = pVM->pgm.s.CTX_SUFF(pPool);
987	unsigned const cPages = pPool->cCurPages;
988	unsigned cLeft = pPool->cUsedPages;
989	for (unsigned iPage = 0; iPage < cPages; iPage++)
990	{
991	PGMPOOLPAGE volatile const pPage = (PGMPOOLPAGE volatile const )&pPool->aPages[iPage];
992	RTGCPHYS const GCPhys = pPage->GCPhys;
993	uint8_t const enmKind = pPage->enmKind;
994	if ( enmKind != PGMPOOLKIND_INVALID
995	&& enmKind != PGMPOOLKIND_FREE)
996	{
997	pHlp->pfnPrintf(pHlp, "#%04x: HCPhys=%RHp GCPhys=%RGp %s %s %s%s%s\n",
998	iPage, pPage->Core.Key, GCPhys, pPage->fA20Enabled ? "A20 " : "!A20",
999	pgmPoolPoolKindToStr(enmKind),
1000	pPage->enmAccess == PGMPOOLACCESS_DONTCARE ? "" : pgmPoolPoolAccessToStr(pPage->enmAccess),
1001	pPage->fCached ? " cached" : "", pPage->fMonitored ? " monitored" : "");
1002	if (!--cLeft)
1003	break;
1004	}
1005	}
1006	}
1007
1008
1009	/**
1010	* @callback_method_impl{FNDBGFHANDLERINT, pgmpoolroots}
1011	*/
1012	static DECLCALLBACK(void) pgmR3PoolInfoRoots(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
1013	{
1014	RT_NOREF(pszArgs);
1015
1016	PPGMPOOL const pPool = pVM->pgm.s.CTX_SUFF(pPool);
1017	unsigned const cPages = pPool->cCurPages;
1018	unsigned cLeft = pPool->cUsedPages;
1019	for (unsigned iPage = 0; iPage < cPages; iPage++)
1020	{
1021	PGMPOOLPAGE volatile const pPage = (PGMPOOLPAGE volatile const )&pPool->aPages[iPage];
1022	RTGCPHYS const GCPhys = pPage->GCPhys;
1023	if (GCPhys != NIL_RTGCPHYS)
1024	{
1025	uint8_t const enmKind = pPage->enmKind;
1026	switch (enmKind)
1027	{
1028	default:
1029	break;
1030
1031	case PGMPOOLKIND_PAE_PDPT_FOR_32BIT:
1032	case PGMPOOLKIND_PAE_PDPT:
1033	case PGMPOOLKIND_PAE_PDPT_PHYS:
1034	case PGMPOOLKIND_64BIT_PML4:
1035	case PGMPOOLKIND_ROOT_NESTED:
1036	case PGMPOOLKIND_EPT_PML4_FOR_EPT_PML4:
1037	pHlp->pfnPrintf(pHlp, "#%04x: HCPhys=%RHp GCPhys=%RGp %s %s %s\n",
1038	iPage, pPage->Core.Key, GCPhys, pPage->fA20Enabled ? "A20 " : "!A20",
1039	pgmPoolPoolKindToStr(enmKind), pPage->fMonitored ? " monitored" : "");
1040	break;
1041	}
1042	if (!--cLeft)
1043	break;
1044	}
1045	}
1046	}
1047
1048	#ifdef VBOX_WITH_DEBUGGER
1049
1050	/**
1051	* Helper for pgmR3PoolCmdCheck that reports an error.
1052	*/
1053	static void pgmR3PoolCheckError(PPGMPOOLCHECKERSTATE pState, const char *pszFormat, ...)
1054	{
1055	if (pState->fFirstMsg)
1056	{
1057	DBGCCmdHlpPrintf(pState->pCmdHlp, "Checking pool page #%i for %RGp %s\n",
1058	pState->pPage->idx, pState->pPage->GCPhys, pgmPoolPoolKindToStr(pState->pPage->enmKind));
1059	pState->fFirstMsg = false;
1060	}
1061
1062	++pState->cErrors;
1063
1064	va_list va;
1065	va_start(va, pszFormat);
1066	pState->pCmdHlp->pfnPrintfV(pState->pCmdHlp, NULL, pszFormat, va);
1067	va_end(va);
1068	}
1069
1070
1071	/**
1072	* @callback_method_impl{FNDBGCCMD, The '.pgmpoolcheck' command.}
1073	*/
1074	static DECLCALLBACK(int) pgmR3PoolCmdCheck(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1075	{
1076	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
1077	PVM pVM = pUVM->pVM;
1078	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1079	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs == 0);
1080	NOREF(paArgs);
1081
1082	PGM_LOCK_VOID(pVM);
1083	PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
1084	PGMPOOLCHECKERSTATE State = { pCmdHlp, pVM, pPool, NULL, true, 0 };
1085	for (unsigned i = 0; i < pPool->cCurPages; i++)
1086	{
1087	PPGMPOOLPAGE pPage = &pPool->aPages[i];
1088	State.pPage = pPage;
1089	State.fFirstMsg = true;
1090
1091	if (pPage->idx != i)
1092	pgmR3PoolCheckError(&State, "Invalid idx value: %#x, expected %#x", pPage->idx, i);
1093
1094	if (pPage->enmKind == PGMPOOLKIND_FREE)
1095	continue;
1096	if (pPage->enmKind > PGMPOOLKIND_LAST \|\| pPage->enmKind <= PGMPOOLKIND_INVALID)
1097	{
1098	if (pPage->enmKind != PGMPOOLKIND_INVALID \|\| pPage->idx != 0)
1099	pgmR3PoolCheckError(&State, "Invalid enmKind value: %#x\n", pPage->enmKind);
1100	continue;
1101	}
1102
1103	void const *pvGuestPage = NULL;
1104	PGMPAGEMAPLOCK LockPage;
1105	if ( pPage->enmKind != PGMPOOLKIND_EPT_PDPT_FOR_PHYS
1106	&& pPage->enmKind != PGMPOOLKIND_EPT_PD_FOR_PHYS
1107	&& pPage->enmKind != PGMPOOLKIND_EPT_PT_FOR_PHYS
1108	&& pPage->enmKind != PGMPOOLKIND_ROOT_NESTED)
1109	{
1110	int rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, pPage->GCPhys, &pvGuestPage, &LockPage);
1111	if (RT_FAILURE(rc))
1112	{
1113	pgmR3PoolCheckError(&State, "PGMPhysGCPhys2CCPtrReadOnly failed for %RGp: %Rrc\n", pPage->GCPhys, rc);
1114	continue;
1115	}
1116	}
1117	# define HCPHYS_TO_POOL_PAGE(a_HCPhys) (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, (a_HCPhys))
1118
1119	/*
1120	* Check if something obvious is out of sync.
1121	*/
1122	switch (pPage->enmKind)
1123	{
1124	case PGMPOOLKIND_PAE_PT_FOR_PAE_PT:
1125	{
1126	PCPGMSHWPTPAE const pShwPT = (PCPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1127	PCX86PDPAE const pGstPT = (PCX86PDPAE)pvGuestPage;
1128	for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
1129	if (PGMSHWPTEPAE_IS_P(pShwPT->a[j]))
1130	{
1131	RTHCPHYS HCPhys = NIL_RTHCPHYS;
1132	int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pGstPT->a[j].u & X86_PTE_PAE_PG_MASK, &HCPhys);
1133	if ( rc != VINF_SUCCESS
1134	\|\| PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[j]) != HCPhys)
1135	pgmR3PoolCheckError(&State, "Mismatch HCPhys: rc=%Rrc idx=%#x guest %RX64 shw=%RX64 vs %RHp\n",
1136	rc, j, pGstPT->a[j].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), HCPhys);
1137	else if ( PGMSHWPTEPAE_IS_RW(pShwPT->a[j])
1138	&& !(pGstPT->a[j].u & X86_PTE_RW))
1139	pgmR3PoolCheckError(&State, "Mismatch r/w gst/shw: idx=%#x guest %RX64 shw=%RX64 vs %RHp\n",
1140	j, pGstPT->a[j].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), HCPhys);
1141	}
1142	break;
1143	}
1144
1145	case PGMPOOLKIND_EPT_PT_FOR_EPT_PT:
1146	{
1147	PCEPTPT const pShwPT = (PCEPTPT)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1148	PCEPTPT const pGstPT = (PCEPTPT)pvGuestPage;
1149	for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
1150	{
1151	uint64_t const uShw = pShwPT->a[j].u;
1152	if (uShw & EPT_PRESENT_MASK)
1153	{
1154	uint64_t const uGst = pGstPT->a[j].u;
1155	RTHCPHYS HCPhys = NIL_RTHCPHYS;
1156	int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), uGst & EPT_E_PG_MASK, &HCPhys);
1157	if ( rc != VINF_SUCCESS
1158	\|\| (uShw & EPT_E_PG_MASK) != HCPhys)
1159	pgmR3PoolCheckError(&State, "Mismatch HCPhys: rc=%Rrc idx=%#x guest %RX64 shw=%RX64 vs %RHp\n",
1160	rc, j, uGst, uShw, HCPhys);
1161	if ( (uShw & (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE))
1162	!= (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE)
1163	&& ( ((uShw & EPT_E_READ) && !(uGst & EPT_E_READ))
1164	\|\| ((uShw & EPT_E_WRITE) && !(uGst & EPT_E_WRITE))
1165	\|\| ((uShw & EPT_E_EXECUTE) && !(uGst & EPT_E_EXECUTE)) ) )
1166	pgmR3PoolCheckError(&State, "Mismatch r/w/x: idx=%#x guest %RX64 shw=%RX64\n", j, uGst, uShw);
1167	}
1168	}
1169	break;
1170	}
1171
1172	case PGMPOOLKIND_EPT_PT_FOR_EPT_2MB:
1173	{
1174	PCEPTPT const pShwPT = (PCEPTPT)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1175	for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
1176	{
1177	uint64_t const uShw = pShwPT->a[j].u;
1178	if (uShw & EPT_E_LEAF)
1179	pgmR3PoolCheckError(&State, "Leafness-error: idx=%#x shw=%RX64 (2MB)\n", j, uShw);
1180	else if (uShw & EPT_PRESENT_MASK)
1181	{
1182	RTGCPHYS const GCPhysSubPage = pPage->GCPhys \| (j << PAGE_SHIFT);
1183	RTHCPHYS HCPhys = NIL_RTHCPHYS;
1184	int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), GCPhysSubPage, &HCPhys);
1185	if ( rc != VINF_SUCCESS
1186	\|\| (uShw & EPT_E_PG_MASK) != HCPhys)
1187	pgmR3PoolCheckError(&State, "Mismatch HCPhys: rc=%Rrc idx=%#x guest %RX64 shw=%RX64 vs %RHp\n",
1188	rc, j, GCPhysSubPage, uShw, HCPhys);
1189	}
1190	}
1191	break;
1192	}
1193
1194	case PGMPOOLKIND_EPT_PD_FOR_EPT_PD:
1195	{
1196	PCEPTPD const pShwPD = (PCEPTPD)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1197	PCEPTPD const pGstPD = (PCEPTPD)pvGuestPage;
1198	for (unsigned j = 0; j < RT_ELEMENTS(pShwPD->a); j++)
1199	{
1200	uint64_t const uShw = pShwPD->a[j].u;
1201	if (uShw & EPT_PRESENT_MASK)
1202	{
1203	uint64_t const uGst = pGstPD->a[j].u;
1204	if (uShw & EPT_E_LEAF)
1205	{
1206	if (!(uGst & EPT_E_LEAF))
1207	pgmR3PoolCheckError(&State, "Leafness-mismatch: idx=%#x guest %RX64 shw=%RX64\n", j, uGst, uShw);
1208	else
1209	{
1210	RTHCPHYS HCPhys = NIL_RTHCPHYS;
1211	int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), uGst & EPT_PDE2M_PG_MASK, &HCPhys);
1212	if ( rc != VINF_SUCCESS
1213	\|\| (uShw & EPT_E_PG_MASK) != HCPhys)
1214	pgmR3PoolCheckError(&State, "Mismatch HCPhys: rc=%Rrc idx=%#x guest %RX64 shw=%RX64 vs %RHp (2MB)\n",
1215	rc, j, uGst, uShw, HCPhys);
1216	}
1217	}
1218	else
1219	{
1220	PPGMPOOLPAGE pSubPage = HCPHYS_TO_POOL_PAGE(uShw & EPT_E_PG_MASK);
1221	if (pSubPage)
1222	{
1223	if ( pSubPage->enmKind != PGMPOOLKIND_EPT_PT_FOR_EPT_PT
1224	&& pSubPage->enmKind != PGMPOOLKIND_EPT_PT_FOR_EPT_2MB)
1225	pgmR3PoolCheckError(&State, "Wrong sub-table type: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x %s\n",
1226	j, uGst, uShw, pSubPage->idx, pgmPoolPoolKindToStr(pSubPage->enmKind));
1227	if (pSubPage->fA20Enabled != pPage->fA20Enabled)
1228	pgmR3PoolCheckError(&State, "Wrong sub-table A20: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x A20=%d, expected %d\n",
1229	j, uGst, uShw, pSubPage->idx, pSubPage->fA20Enabled, pPage->fA20Enabled);
1230	if (pSubPage->GCPhys != (uGst & EPT_E_PG_MASK))
1231	pgmR3PoolCheckError(&State, "Wrong sub-table GCPhys: idx=%#x guest %RX64 shw=%RX64: GCPhys=%#RGp idxSub=%#x\n",
1232	j, uGst, uShw, pSubPage->GCPhys, pSubPage->idx);
1233	}
1234	else
1235	pgmR3PoolCheckError(&State, "sub table not found: idx=%#x shw=%RX64\n", j, uShw);
1236	}
1237	if ( (uShw & (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE))
1238	!= (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE)
1239	&& ( ((uShw & EPT_E_READ) && !(uGst & EPT_E_READ))
1240	\|\| ((uShw & EPT_E_WRITE) && !(uGst & EPT_E_WRITE))
1241	\|\| ((uShw & EPT_E_EXECUTE) && !(uGst & EPT_E_EXECUTE)) ) )
1242	pgmR3PoolCheckError(&State, "Mismatch r/w/x: idx=%#x guest %RX64 shw=%RX64\n",
1243	j, uGst, uShw);
1244	}
1245	}
1246	break;
1247	}
1248
1249	case PGMPOOLKIND_EPT_PDPT_FOR_EPT_PDPT:
1250	{
1251	PCEPTPDPT const pShwPDPT = (PCEPTPDPT)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1252	PCEPTPDPT const pGstPDPT = (PCEPTPDPT)pvGuestPage;
1253	for (unsigned j = 0; j < RT_ELEMENTS(pShwPDPT->a); j++)
1254	{
1255	uint64_t const uShw = pShwPDPT->a[j].u;
1256	if (uShw & EPT_PRESENT_MASK)
1257	{
1258	uint64_t const uGst = pGstPDPT->a[j].u;
1259	if (uShw & EPT_E_LEAF)
1260	pgmR3PoolCheckError(&State, "No 1GiB shadow pages: idx=%#x guest %RX64 shw=%RX64\n", j, uGst, uShw);
1261	else
1262	{
1263	PPGMPOOLPAGE pSubPage = HCPHYS_TO_POOL_PAGE(uShw & EPT_E_PG_MASK);
1264	if (pSubPage)
1265	{
1266	if (pSubPage->enmKind != PGMPOOLKIND_EPT_PD_FOR_EPT_PD)
1267	pgmR3PoolCheckError(&State, "Wrong sub-table type: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x %s\n",
1268	j, uGst, uShw, pSubPage->idx, pgmPoolPoolKindToStr(pSubPage->enmKind));
1269	if (pSubPage->fA20Enabled != pPage->fA20Enabled)
1270	pgmR3PoolCheckError(&State, "Wrong sub-table A20: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x A20=%d, expected %d\n",
1271	j, uGst, uShw, pSubPage->idx, pSubPage->fA20Enabled, pPage->fA20Enabled);
1272	if (pSubPage->GCPhys != (uGst & EPT_E_PG_MASK))
1273	pgmR3PoolCheckError(&State, "Wrong sub-table GCPhys: idx=%#x guest %RX64 shw=%RX64: GCPhys=%#RGp idxSub=%#x\n",
1274	j, uGst, uShw, pSubPage->GCPhys, pSubPage->idx);
1275	}
1276	else
1277	pgmR3PoolCheckError(&State, "sub table not found: idx=%#x shw=%RX64\n", j, uShw);
1278
1279	}
1280	if ( (uShw & (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE))
1281	!= (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE)
1282	&& ( ((uShw & EPT_E_READ) && !(uGst & EPT_E_READ))
1283	\|\| ((uShw & EPT_E_WRITE) && !(uGst & EPT_E_WRITE))
1284	\|\| ((uShw & EPT_E_EXECUTE) && !(uGst & EPT_E_EXECUTE)) ) )
1285	pgmR3PoolCheckError(&State, "Mismatch r/w/x: idx=%#x guest %RX64 shw=%RX64\n",
1286	j, uGst, uShw);
1287	}
1288	}
1289	break;
1290	}
1291
1292	case PGMPOOLKIND_EPT_PML4_FOR_EPT_PML4:
1293	{
1294	PCEPTPML4 const pShwPML4 = (PCEPTPML4)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
1295	PCEPTPML4 const pGstPML4 = (PCEPTPML4)pvGuestPage;
1296	for (unsigned j = 0; j < RT_ELEMENTS(pShwPML4->a); j++)
1297	{
1298	uint64_t const uShw = pShwPML4->a[j].u;
1299	if (uShw & EPT_PRESENT_MASK)
1300	{
1301	uint64_t const uGst = pGstPML4->a[j].u;
1302	if (uShw & EPT_E_LEAF)
1303	pgmR3PoolCheckError(&State, "No 0.5TiB shadow pages: idx=%#x guest %RX64 shw=%RX64\n", j, uGst, uShw);
1304	else
1305	{
1306	PPGMPOOLPAGE pSubPage = HCPHYS_TO_POOL_PAGE(uShw & EPT_E_PG_MASK);
1307	if (pSubPage)
1308	{
1309	if (pSubPage->enmKind != PGMPOOLKIND_EPT_PDPT_FOR_EPT_PDPT)
1310	pgmR3PoolCheckError(&State, "Wrong sub-table type: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x %s\n",
1311	j, uGst, uShw, pSubPage->idx, pgmPoolPoolKindToStr(pSubPage->enmKind));
1312	if (pSubPage->fA20Enabled != pPage->fA20Enabled)
1313	pgmR3PoolCheckError(&State, "Wrong sub-table A20: idx=%#x guest %RX64 shw=%RX64: idxSub=%#x A20=%d, expected %d\n",
1314	j, uGst, uShw, pSubPage->idx, pSubPage->fA20Enabled, pPage->fA20Enabled);
1315	if (pSubPage->GCPhys != (uGst & EPT_E_PG_MASK))
1316	pgmR3PoolCheckError(&State, "Wrong sub-table GCPhys: idx=%#x guest %RX64 shw=%RX64: GCPhys=%#RGp idxSub=%#x\n",
1317	j, uGst, uShw, pSubPage->GCPhys, pSubPage->idx);
1318	}
1319	else
1320	pgmR3PoolCheckError(&State, "sub table not found: idx=%#x shw=%RX64\n", j, uShw);
1321
1322	}
1323	if ( (uShw & (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE))
1324	!= (EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE)
1325	&& ( ((uShw & EPT_E_READ) && !(uGst & EPT_E_READ))
1326	\|\| ((uShw & EPT_E_WRITE) && !(uGst & EPT_E_WRITE))
1327	\|\| ((uShw & EPT_E_EXECUTE) && !(uGst & EPT_E_EXECUTE)) ) )
1328	pgmR3PoolCheckError(&State, "Mismatch r/w/x: idx=%#x guest %RX64 shw=%RX64\n",
1329	j, uGst, uShw);
1330	}
1331	}
1332	break;
1333	}
1334	}
1335
1336	#undef HCPHYS_TO_POOL_PAGE
1337	if (pvGuestPage)
1338	PGMPhysReleasePageMappingLock(pVM, &LockPage);
1339	}
1340	PGM_UNLOCK(pVM);
1341
1342	if (State.cErrors > 0)
1343	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Found %u error(s)", State.cErrors);
1344	DBGCCmdHlpPrintf(pCmdHlp, "No errors found\n");
1345	return VINF_SUCCESS;
1346	}
1347
1348	#endif /* VBOX_WITH_DEBUGGER */

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGMPool.cpp@ 105745

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