PGM.cpp@ 40054

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1	/* $Id: PGM.cpp 40054 2012-02-09 15:37:11Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor. (Mixing stuff here, not good?)
4	*/
5
6	/*
7	* Copyright (C) 2006-2011 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	/** @page pg_pgm PGM - The Page Manager and Monitor
20	*
21	* @see grp_pgm,
22	* @ref pg_pgm_pool,
23	* @ref pg_pgm_phys.
24	*
25	*
26	* @section sec_pgm_modes Paging Modes
27	*
28	* There are three memory contexts: Host Context (HC), Guest Context (GC)
29	* and intermediate context. When talking about paging HC can also be referred to
30	* as "host paging", and GC referred to as "shadow paging".
31	*
32	* We define three basic paging modes: 32-bit, PAE and AMD64. The host paging mode
33	* is defined by the host operating system. The mode used in the shadow paging mode
34	* depends on the host paging mode and what the mode the guest is currently in. The
35	* following relation between the two is defined:
36	*
37	* @verbatim
38	Host > 32-bit \| PAE \| AMD64 \|
39	Guest \| \| \| \|
40	==v================================
41	32-bit 32-bit PAE PAE
42	-------\|--------\|--------\|--------\|
43	PAE PAE PAE PAE
44	-------\|--------\|--------\|--------\|
45	AMD64 AMD64 AMD64 AMD64
46	-------\|--------\|--------\|--------\| @endverbatim
47	*
48	* All configuration except those in the diagonal (upper left) are expected to
49	* require special effort from the switcher (i.e. a bit slower).
50	*
51	*
52	*
53	*
54	* @section sec_pgm_shw The Shadow Memory Context
55	*
56	*
57	* [..]
58	*
59	* Because of guest context mappings requires PDPT and PML4 entries to allow
60	* writing on AMD64, the two upper levels will have fixed flags whatever the
61	* guest is thinking of using there. So, when shadowing the PD level we will
62	* calculate the effective flags of PD and all the higher levels. In legacy
63	* PAE mode this only applies to the PWT and PCD bits (the rest are
64	* ignored/reserved/MBZ). We will ignore those bits for the present.
65	*
66	*
67	*
68	* @section sec_pgm_int The Intermediate Memory Context
69	*
70	* The world switch goes thru an intermediate memory context which purpose it is
71	* to provide different mappings of the switcher code. All guest mappings are also
72	* present in this context.
73	*
74	* The switcher code is mapped at the same location as on the host, at an
75	* identity mapped location (physical equals virtual address), and at the
76	* hypervisor location. The identity mapped location is for when the world
77	* switches that involves disabling paging.
78	*
79	* PGM maintain page tables for 32-bit, PAE and AMD64 paging modes. This
80	* simplifies switching guest CPU mode and consistency at the cost of more
81	* code to do the work. All memory use for those page tables is located below
82	* 4GB (this includes page tables for guest context mappings).
83	*
84	*
85	* @subsection subsec_pgm_int_gc Guest Context Mappings
86	*
87	* During assignment and relocation of a guest context mapping the intermediate
88	* memory context is used to verify the new location.
89	*
90	* Guest context mappings are currently restricted to below 4GB, for reasons
91	* of simplicity. This may change when we implement AMD64 support.
92	*
93	*
94	*
95	*
96	* @section sec_pgm_misc Misc
97	*
98	* @subsection subsec_pgm_misc_diff Differences Between Legacy PAE and Long Mode PAE
99	*
100	* The differences between legacy PAE and long mode PAE are:
101	* -# PDPE bits 1, 2, 5 and 6 are defined differently. In leagcy mode they are
102	* all marked down as must-be-zero, while in long mode 1, 2 and 5 have the
103	* usual meanings while 6 is ignored (AMD). This means that upon switching to
104	* legacy PAE mode we'll have to clear these bits and when going to long mode
105	* they must be set. This applies to both intermediate and shadow contexts,
106	* however we don't need to do it for the intermediate one since we're
107	* executing with CR0.WP at that time.
108	* -# CR3 allows a 32-byte aligned address in legacy mode, while in long mode
109	* a page aligned one is required.
110	*
111	*
112	* @section sec_pgm_handlers Access Handlers
113	*
114	* Placeholder.
115	*
116	*
117	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
118	*
119	* Placeholder.
120	*
121	*
122	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
123	*
124	* We currently implement three types of virtual access handlers: ALL, WRITE
125	* and HYPERVISOR (WRITE). See PGMVIRTHANDLERTYPE for some more details.
126	*
127	* The HYPERVISOR access handlers is kept in a separate tree since it doesn't apply
128	* to physical pages (PGMTREES::HyperVirtHandlers) and only needs to be consulted in
129	* a special \#PF case. The ALL and WRITE are in the PGMTREES::VirtHandlers tree, the
130	* rest of this section is going to be about these handlers.
131	*
132	* We'll go thru the life cycle of a handler and try make sense of it all, don't know
133	* how successful this is gonna be...
134	*
135	* 1. A handler is registered thru the PGMR3HandlerVirtualRegister and
136	* PGMHandlerVirtualRegisterEx APIs. We check for conflicting virtual handlers
137	* and create a new node that is inserted into the AVL tree (range key). Then
138	* a full PGM resync is flagged (clear pool, sync cr3, update virtual bit of PGMPAGE).
139	*
140	* 2. The following PGMSyncCR3/SyncCR3 operation will first make invoke HandlerVirtualUpdate.
141	*
142	* 2a. HandlerVirtualUpdate will will lookup all the pages covered by virtual handlers
143	* via the current guest CR3 and update the physical page -> virtual handler
144	* translation. Needless to say, this doesn't exactly scale very well. If any changes
145	* are detected, it will flag a virtual bit update just like we did on registration.
146	* PGMPHYS pages with changes will have their virtual handler state reset to NONE.
147	*
148	* 2b. The virtual bit update process will iterate all the pages covered by all the
149	* virtual handlers and update the PGMPAGE virtual handler state to the max of all
150	* virtual handlers on that page.
151	*
152	* 2c. Back in SyncCR3 we will now flush the entire shadow page cache to make sure
153	* we don't miss any alias mappings of the monitored pages.
154	*
155	* 2d. SyncCR3 will then proceed with syncing the CR3 table.
156	*
157	* 3. \#PF(np,read) on a page in the range. This will cause it to be synced
158	* read-only and resumed if it's a WRITE handler. If it's an ALL handler we
159	* will call the handlers like in the next step. If the physical mapping has
160	* changed we will - some time in the future - perform a handler callback
161	* (optional) and update the physical -> virtual handler cache.
162	*
163	* 4. \#PF(,write) on a page in the range. This will cause the handler to
164	* be invoked.
165	*
166	* 5. The guest invalidates the page and changes the physical backing or
167	* unmaps it. This should cause the invalidation callback to be invoked
168	* (it might not yet be 100% perfect). Exactly what happens next... is
169	* this where we mess up and end up out of sync for a while?
170	*
171	* 6. The handler is deregistered by the client via PGMHandlerVirtualDeregister.
172	* We will then set all PGMPAGEs in the physical -> virtual handler cache for
173	* this handler to NONE and trigger a full PGM resync (basically the same
174	* as int step 1). Which means 2 is executed again.
175	*
176	*
177	* @subsubsection sub_sec_pgm_handler_virt_todo TODOs
178	*
179	* There is a bunch of things that needs to be done to make the virtual handlers
180	* work 100% correctly and work more efficiently.
181	*
182	* The first bit hasn't been implemented yet because it's going to slow the
183	* whole mess down even more, and besides it seems to be working reliably for
184	* our current uses. OTOH, some of the optimizations might end up more or less
185	* implementing the missing bits, so we'll see.
186	*
187	* On the optimization side, the first thing to do is to try avoid unnecessary
188	* cache flushing. Then try team up with the shadowing code to track changes
189	* in mappings by means of access to them (shadow in), updates to shadows pages,
190	* invlpg, and shadow PT discarding (perhaps).
191	*
192	* Some idea that have popped up for optimization for current and new features:
193	* - bitmap indicating where there are virtual handlers installed.
194	* (4KB => 220 pages, page 212 => covers 32-bit address space 1:1!)
195	* - Further optimize this by min/max (needs min/max avl getters).
196	* - Shadow page table entry bit (if any left)?
197	*
198	*/
199
200
201	/** @page pg_pgm_phys PGM Physical Guest Memory Management
202	*
203	*
204	* Objectives:
205	* - Guest RAM over-commitment using memory ballooning,
206	* zero pages and general page sharing.
207	* - Moving or mirroring a VM onto a different physical machine.
208	*
209	*
210	* @subsection subsec_pgmPhys_Definitions Definitions
211	*
212	* Allocation chunk - A RTR0MemObjAllocPhysNC object and the tracking
213	* machinery associated with it.
214	*
215	*
216	*
217	*
218	* @subsection subsec_pgmPhys_AllocPage Allocating a page.
219	*
220	* Initially we map all guest memory to the (per VM) zero page, which
221	* means that none of the read functions will cause pages to be allocated.
222	*
223	* Exception, access bit in page tables that have been shared. This must
224	* be handled, but we must also make sure PGMGst*Modify doesn't make
225	* unnecessary modifications.
226	*
227	* Allocation points:
228	* - PGMPhysSimpleWriteGCPhys and PGMPhysWrite.
229	* - Replacing a zero page mapping at \#PF.
230	* - Replacing a shared page mapping at \#PF.
231	* - ROM registration (currently MMR3RomRegister).
232	* - VM restore (pgmR3Load).
233	*
234	* For the first three it would make sense to keep a few pages handy
235	* until we've reached the max memory commitment for the VM.
236	*
237	* For the ROM registration, we know exactly how many pages we need
238	* and will request these from ring-0. For restore, we will save
239	* the number of non-zero pages in the saved state and allocate
240	* them up front. This would allow the ring-0 component to refuse
241	* the request if the isn't sufficient memory available for VM use.
242	*
243	* Btw. for both ROM and restore allocations we won't be requiring
244	* zeroed pages as they are going to be filled instantly.
245	*
246	*
247	* @subsection subsec_pgmPhys_FreePage Freeing a page
248	*
249	* There are a few points where a page can be freed:
250	* - After being replaced by the zero page.
251	* - After being replaced by a shared page.
252	* - After being ballooned by the guest additions.
253	* - At reset.
254	* - At restore.
255	*
256	* When freeing one or more pages they will be returned to the ring-0
257	* component and replaced by the zero page.
258	*
259	* The reasoning for clearing out all the pages on reset is that it will
260	* return us to the exact same state as on power on, and may thereby help
261	* us reduce the memory load on the system. Further it might have a
262	* (temporary) positive influence on memory fragmentation (@see subsec_pgmPhys_Fragmentation).
263	*
264	* On restore, as mention under the allocation topic, pages should be
265	* freed / allocated depending on how many is actually required by the
266	* new VM state. The simplest approach is to do like on reset, and free
267	* all non-ROM pages and then allocate what we need.
268	*
269	* A measure to prevent some fragmentation, would be to let each allocation
270	* chunk have some affinity towards the VM having allocated the most pages
271	* from it. Also, try make sure to allocate from allocation chunks that
272	* are almost full. Admittedly, both these measures might work counter to
273	* our intentions and its probably not worth putting a lot of effort,
274	* cpu time or memory into this.
275	*
276	*
277	* @subsection subsec_pgmPhys_SharePage Sharing a page
278	*
279	* The basic idea is that there there will be a idle priority kernel
280	* thread walking the non-shared VM pages hashing them and looking for
281	* pages with the same checksum. If such pages are found, it will compare
282	* them byte-by-byte to see if they actually are identical. If found to be
283	* identical it will allocate a shared page, copy the content, check that
284	* the page didn't change while doing this, and finally request both the
285	* VMs to use the shared page instead. If the page is all zeros (special
286	* checksum and byte-by-byte check) it will request the VM that owns it
287	* to replace it with the zero page.
288	*
289	* To make this efficient, we will have to make sure not to try share a page
290	* that will change its contents soon. This part requires the most work.
291	* A simple idea would be to request the VM to write monitor the page for
292	* a while to make sure it isn't modified any time soon. Also, it may
293	* make sense to skip pages that are being write monitored since this
294	* information is readily available to the thread if it works on the
295	* per-VM guest memory structures (presently called PGMRAMRANGE).
296	*
297	*
298	* @subsection subsec_pgmPhys_Fragmentation Fragmentation Concerns and Counter Measures
299	*
300	* The pages are organized in allocation chunks in ring-0, this is a necessity
301	* if we wish to have an OS agnostic approach to this whole thing. (On Linux we
302	* could easily work on a page-by-page basis if we liked. Whether this is possible
303	* or efficient on NT I don't quite know.) Fragmentation within these chunks may
304	* become a problem as part of the idea here is that we wish to return memory to
305	* the host system.
306	*
307	* For instance, starting two VMs at the same time, they will both allocate the
308	* guest memory on-demand and if permitted their page allocations will be
309	* intermixed. Shut down one of the two VMs and it will be difficult to return
310	* any memory to the host system because the page allocation for the two VMs are
311	* mixed up in the same allocation chunks.
312	*
313	* To further complicate matters, when pages are freed because they have been
314	* ballooned or become shared/zero the whole idea is that the page is supposed
315	* to be reused by another VM or returned to the host system. This will cause
316	* allocation chunks to contain pages belonging to different VMs and prevent
317	* returning memory to the host when one of those VM shuts down.
318	*
319	* The only way to really deal with this problem is to move pages. This can
320	* either be done at VM shutdown and or by the idle priority worker thread
321	* that will be responsible for finding sharable/zero pages. The mechanisms
322	* involved for coercing a VM to move a page (or to do it for it) will be
323	* the same as when telling it to share/zero a page.
324	*
325	*
326	* @subsection subsec_pgmPhys_Tracking Tracking Structures And Their Cost
327	*
328	* There's a difficult balance between keeping the per-page tracking structures
329	* (global and guest page) easy to use and keeping them from eating too much
330	* memory. We have limited virtual memory resources available when operating in
331	* 32-bit kernel space (on 64-bit there'll it's quite a different story). The
332	* tracking structures will be attempted designed such that we can deal with up
333	* to 32GB of memory on a 32-bit system and essentially unlimited on 64-bit ones.
334	*
335	*
336	* @subsubsection subsubsec_pgmPhys_Tracking_Kernel Kernel Space
337	*
338	* @see pg_GMM
339	*
340	* @subsubsection subsubsec_pgmPhys_Tracking_PerVM Per-VM
341	*
342	* Fixed info is the physical address of the page (HCPhys) and the page id
343	* (described above). Theoretically we'll need 48(-12) bits for the HCPhys part.
344	* Today we've restricting ourselves to 40(-12) bits because this is the current
345	* restrictions of all AMD64 implementations (I think Barcelona will up this
346	* to 48(-12) bits, not that it really matters) and I needed the bits for
347	* tracking mappings of a page. 48-12 = 36. That leaves 28 bits, which means a
348	* decent range for the page id: 2^(28+12) = 1024TB.
349	*
350	* In additions to these, we'll have to keep maintaining the page flags as we
351	* currently do. Although it wouldn't harm to optimize these quite a bit, like
352	* for instance the ROM shouldn't depend on having a write handler installed
353	* in order for it to become read-only. A RO/RW bit should be considered so
354	* that the page syncing code doesn't have to mess about checking multiple
355	* flag combinations (ROM \|\| RW handler \|\| write monitored) in order to
356	* figure out how to setup a shadow PTE. But this of course, is second
357	* priority at present. Current this requires 12 bits, but could probably
358	* be optimized to ~8.
359	*
360	* Then there's the 24 bits used to track which shadow page tables are
361	* currently mapping a page for the purpose of speeding up physical
362	* access handlers, and thereby the page pool cache. More bit for this
363	* purpose wouldn't hurt IIRC.
364	*
365	* Then there is a new bit in which we need to record what kind of page
366	* this is, shared, zero, normal or write-monitored-normal. This'll
367	* require 2 bits. One bit might be needed for indicating whether a
368	* write monitored page has been written to. And yet another one or
369	* two for tracking migration status. 3-4 bits total then.
370	*
371	* Whatever is left will can be used to record the sharabilitiy of a
372	* page. The page checksum will not be stored in the per-VM table as
373	* the idle thread will not be permitted to do modifications to it.
374	* It will instead have to keep its own working set of potentially
375	* shareable pages and their check sums and stuff.
376	*
377	* For the present we'll keep the current packing of the
378	* PGMRAMRANGE::aHCPhys to keep the changes simple, only of course,
379	* we'll have to change it to a struct with a total of 128-bits at
380	* our disposal.
381	*
382	* The initial layout will be like this:
383	* @verbatim
384	RTHCPHYS HCPhys; The current stuff.
385	63:40 Current shadow PT tracking stuff.
386	39:12 The physical page frame number.
387	11:0 The current flags.
388	uint32_t u28PageId : 28; The page id.
389	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
390	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
391	uint32_t u1Reserved : 1; Reserved for later.
392	uint32_t u32Reserved; Reserved for later, mostly sharing stats.
393	@endverbatim
394	*
395	* The final layout will be something like this:
396	* @verbatim
397	RTHCPHYS HCPhys; The current stuff.
398	63:48 High page id (12+).
399	47:12 The physical page frame number.
400	11:0 Low page id.
401	uint32_t fReadOnly : 1; Whether it's readonly page (rom or monitored in some way).
402	uint32_t u3Type : 3; The page type {RESERVED, MMIO, MMIO2, ROM, shadowed ROM, RAM}.
403	uint32_t u2PhysMon : 2; Physical access handler type {none, read, write, all}.
404	uint32_t u2VirtMon : 2; Virtual access handler type {none, read, write, all}..
405	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
406	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
407	uint32_t u20Reserved : 20; Reserved for later, mostly sharing stats.
408	uint32_t u32Tracking; The shadow PT tracking stuff, roughly.
409	@endverbatim
410	*
411	* Cost wise, this means we'll double the cost for guest memory. There isn't anyway
412	* around that I'm afraid. It means that the cost of dealing out 32GB of memory
413	* to one or more VMs is: (32GB >> PAGE_SHIFT) * 16 bytes, or 128MBs. Or another
414	* example, the VM heap cost when assigning 1GB to a VM will be: 4MB.
415	*
416	* A couple of cost examples for the total cost per-VM + kernel.
417	* 32-bit Windows and 32-bit linux:
418	* 1GB guest ram, 256K pages: 4MB + 2MB(+) = 6MB
419	* 4GB guest ram, 1M pages: 16MB + 8MB(+) = 24MB
420	* 32GB guest ram, 8M pages: 128MB + 64MB(+) = 192MB
421	* 64-bit Windows and 64-bit linux:
422	* 1GB guest ram, 256K pages: 4MB + 3MB(+) = 7MB
423	* 4GB guest ram, 1M pages: 16MB + 12MB(+) = 28MB
424	* 32GB guest ram, 8M pages: 128MB + 96MB(+) = 224MB
425	*
426	* UPDATE - 2007-09-27:
427	* Will need a ballooned flag/state too because we cannot
428	* trust the guest 100% and reporting the same page as ballooned more
429	* than once will put the GMM off balance.
430	*
431	*
432	* @subsection subsec_pgmPhys_Serializing Serializing Access
433	*
434	* Initially, we'll try a simple scheme:
435	*
436	* - The per-VM RAM tracking structures (PGMRAMRANGE) is only modified
437	* by the EMT thread of that VM while in the pgm critsect.
438	* - Other threads in the VM process that needs to make reliable use of
439	* the per-VM RAM tracking structures will enter the critsect.
440	* - No process external thread or kernel thread will ever try enter
441	* the pgm critical section, as that just won't work.
442	* - The idle thread (and similar threads) doesn't not need 100% reliable
443	* data when performing it tasks as the EMT thread will be the one to
444	* do the actual changes later anyway. So, as long as it only accesses
445	* the main ram range, it can do so by somehow preventing the VM from
446	* being destroyed while it works on it...
447	*
448	* - The over-commitment management, including the allocating/freeing
449	* chunks, is serialized by a ring-0 mutex lock (a fast one since the
450	* more mundane mutex implementation is broken on Linux).
451	* - A separate mutex is protecting the set of allocation chunks so
452	* that pages can be shared or/and freed up while some other VM is
453	* allocating more chunks. This mutex can be take from under the other
454	* one, but not the other way around.
455	*
456	*
457	* @subsection subsec_pgmPhys_Request VM Request interface
458	*
459	* When in ring-0 it will become necessary to send requests to a VM so it can
460	* for instance move a page while defragmenting during VM destroy. The idle
461	* thread will make use of this interface to request VMs to setup shared
462	* pages and to perform write monitoring of pages.
463	*
464	* I would propose an interface similar to the current VMReq interface, similar
465	* in that it doesn't require locking and that the one sending the request may
466	* wait for completion if it wishes to. This shouldn't be very difficult to
467	* realize.
468	*
469	* The requests themselves are also pretty simple. They are basically:
470	* -# Check that some precondition is still true.
471	* -# Do the update.
472	* -# Update all shadow page tables involved with the page.
473	*
474	* The 3rd step is identical to what we're already doing when updating a
475	* physical handler, see pgmHandlerPhysicalSetRamFlagsAndFlushShadowPTs.
476	*
477	*
478	*
479	* @section sec_pgmPhys_MappingCaches Mapping Caches
480	*
481	* In order to be able to map in and out memory and to be able to support
482	* guest with more RAM than we've got virtual address space, we'll employing
483	* a mapping cache. Normally ring-0 and ring-3 can share the same cache,
484	* however on 32-bit darwin the ring-0 code is running in a different memory
485	* context and therefore needs a separate cache. In raw-mode context we also
486	* need a separate cache. The 32-bit darwin mapping cache and the one for
487	* raw-mode context share a lot of code, see PGMRZDYNMAP.
488	*
489	*
490	* @subsection subsec_pgmPhys_MappingCaches_R3 Ring-3
491	*
492	* We've considered implementing the ring-3 mapping cache page based but found
493	* that this was bother some when one had to take into account TLBs+SMP and
494	* portability (missing the necessary APIs on several platforms). There were
495	* also some performance concerns with this approach which hadn't quite been
496	* worked out.
497	*
498	* Instead, we'll be mapping allocation chunks into the VM process. This simplifies
499	* matters greatly quite a bit since we don't need to invent any new ring-0 stuff,
500	* only some minor RTR0MEMOBJ mapping stuff. The main concern here is that mapping
501	* compared to the previous idea is that mapping or unmapping a 1MB chunk is more
502	* costly than a single page, although how much more costly is uncertain. We'll
503	* try address this by using a very big cache, preferably bigger than the actual
504	* VM RAM size if possible. The current VM RAM sizes should give some idea for
505	* 32-bit boxes, while on 64-bit we can probably get away with employing an
506	* unlimited cache.
507	*
508	* The cache have to parts, as already indicated, the ring-3 side and the
509	* ring-0 side.
510	*
511	* The ring-0 will be tied to the page allocator since it will operate on the
512	* memory objects it contains. It will therefore require the first ring-0 mutex
513	* discussed in @ref subsec_pgmPhys_Serializing. We
514	* some double house keeping wrt to who has mapped what I think, since both
515	* VMMR0.r0 and RTR0MemObj will keep track of mapping relations
516	*
517	* The ring-3 part will be protected by the pgm critsect. For simplicity, we'll
518	* require anyone that desires to do changes to the mapping cache to do that
519	* from within this critsect. Alternatively, we could employ a separate critsect
520	* for serializing changes to the mapping cache as this would reduce potential
521	* contention with other threads accessing mappings unrelated to the changes
522	* that are in process. We can see about this later, contention will show
523	* up in the statistics anyway, so it'll be simple to tell.
524	*
525	* The organization of the ring-3 part will be very much like how the allocation
526	* chunks are organized in ring-0, that is in an AVL tree by chunk id. To avoid
527	* having to walk the tree all the time, we'll have a couple of lookaside entries
528	* like in we do for I/O ports and MMIO in IOM.
529	*
530	* The simplified flow of a PGMPhysRead/Write function:
531	* -# Enter the PGM critsect.
532	* -# Lookup GCPhys in the ram ranges and get the Page ID.
533	* -# Calc the Allocation Chunk ID from the Page ID.
534	* -# Check the lookaside entries and then the AVL tree for the Chunk ID.
535	* If not found in cache:
536	* -# Call ring-0 and request it to be mapped and supply
537	* a chunk to be unmapped if the cache is maxed out already.
538	* -# Insert the new mapping into the AVL tree (id + R3 address).
539	* -# Update the relevant lookaside entry and return the mapping address.
540	* -# Do the read/write according to monitoring flags and everything.
541	* -# Leave the critsect.
542	*
543	*
544	* @section sec_pgmPhys_Fallback Fallback
545	*
546	* Current all the "second tier" hosts will not support the RTR0MemObjAllocPhysNC
547	* API and thus require a fallback.
548	*
549	* So, when RTR0MemObjAllocPhysNC returns VERR_NOT_SUPPORTED the page allocator
550	* will return to the ring-3 caller (and later ring-0) and asking it to seed
551	* the page allocator with some fresh pages (VERR_GMM_SEED_ME). Ring-3 will
552	* then perform an SUPR3PageAlloc(cbChunk >> PAGE_SHIFT) call and make a
553	* "SeededAllocPages" call to ring-0.
554	*
555	* The first time ring-0 sees the VERR_NOT_SUPPORTED failure it will disable
556	* all page sharing (zero page detection will continue). It will also force
557	* all allocations to come from the VM which seeded the page. Both these
558	* measures are taken to make sure that there will never be any need for
559	* mapping anything into ring-3 - everything will be mapped already.
560	*
561	* Whether we'll continue to use the current MM locked memory management
562	* for this I don't quite know (I'd prefer not to and just ditch that all
563	* together), we'll see what's simplest to do.
564	*
565	*
566	*
567	* @section sec_pgmPhys_Changes Changes
568	*
569	* Breakdown of the changes involved?
570	*/
571
572	/*******************************************************************************
573	* Header Files *
574	*******************************************************************************/
575	#define LOG_GROUP LOG_GROUP_PGM
576	#include <VBox/vmm/dbgf.h>
577	#include <VBox/vmm/pgm.h>
578	#include <VBox/vmm/cpum.h>
579	#include <VBox/vmm/iom.h>
580	#include <VBox/sup.h>
581	#include <VBox/vmm/mm.h>
582	#include <VBox/vmm/em.h>
583	#include <VBox/vmm/stam.h>
584	#include <VBox/vmm/rem.h>
585	#include <VBox/vmm/selm.h>
586	#include <VBox/vmm/ssm.h>
587	#include <VBox/vmm/hwaccm.h>
588	#include "PGMInternal.h"
589	#include <VBox/vmm/vm.h>
590	#include "PGMInline.h"
591
592	#include <VBox/dbg.h>
593	#include <VBox/param.h>
594	#include <VBox/err.h>
595
596	#include <iprt/asm.h>
597	#include <iprt/asm-amd64-x86.h>
598	#include <iprt/assert.h>
599	#include <iprt/env.h>
600	#include <iprt/mem.h>
601	#include <iprt/file.h>
602	#include <iprt/string.h>
603	#include <iprt/thread.h>
604
605
606	/*******************************************************************************
607	* Internal Functions *
608	*******************************************************************************/
609	static int pgmR3InitPaging(PVM pVM);
610	static int pgmR3InitStats(PVM pVM);
611	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
612	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
613	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
614	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser);
615	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
616	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
617	#ifdef VBOX_STRICT
618	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser);
619	#endif
620	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0);
621	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst);
622	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher);
623
624	#ifdef VBOX_WITH_DEBUGGER
625	/** @todo Convert the first two commands to 'info' items. */
626	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
627	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
628	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
629	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
630	# ifdef VBOX_STRICT
631	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
632	# endif
633	static DECLCALLBACK(int) pgmR3CmdPhysToFile(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs);
634	#endif
635
636
637	/*******************************************************************************
638	* Global Variables *
639	*******************************************************************************/
640	#ifdef VBOX_WITH_DEBUGGER
641	/** Argument descriptors for '.pgmerror' and '.pgmerroroff'. */
642	static const DBGCVARDESC g_aPgmErrorArgs[] =
643	{
644	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
645	{ 0, 1, DBGCVAR_CAT_STRING, 0, "where", "Error injection location." },
646	};
647
648	static const DBGCVARDESC g_aPgmPhysToFileArgs[] =
649	{
650	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
651	{ 1, 1, DBGCVAR_CAT_STRING, 0, "file", "The file name." },
652	{ 0, 1, DBGCVAR_CAT_STRING, 0, "nozero", "If present, zero pages are skipped." },
653	};
654
655	# ifdef DEBUG_sandervl
656	static const DBGCVARDESC g_aPgmCountPhysWritesArgs[] =
657	{
658	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
659	{ 1, 1, DBGCVAR_CAT_STRING, 0, "enabled", "on/off." },
660	{ 1, 1, DBGCVAR_CAT_NUMBER_NO_RANGE, 0, "interval", "Interval in ms." },
661	};
662	# endif
663
664	/** Command descriptors. */
665	static const DBGCCMD g_aCmds[] =
666	{
667	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
668	{ "pgmram", 0, 0, NULL, 0, 0, pgmR3CmdRam, "", "Display the ram ranges." },
669	{ "pgmsync", 0, 0, NULL, 0, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
670	{ "pgmerror", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Enables inject runtime of errors into parts of PGM." },
671	{ "pgmerroroff", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Disables inject runtime errors into parts of PGM." },
672	# ifdef VBOX_STRICT
673	{ "pgmassertcr3", 0, 0, NULL, 0, 0, pgmR3CmdAssertCR3, "", "Check the shadow CR3 mapping." },
674	# ifdef VBOX_WITH_PAGE_SHARING
675	{ "pgmcheckduppages", 0, 0, NULL, 0, 0, pgmR3CmdCheckDuplicatePages, "", "Check for duplicate pages in all running VMs." },
676	{ "pgmsharedmodules", 0, 0, NULL, 0, 0, pgmR3CmdShowSharedModules, "", "Print shared modules info." },
677	# endif
678	# endif
679	{ "pgmsyncalways", 0, 0, NULL, 0, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
680	{ "pgmphystofile", 1, 2, &g_aPgmPhysToFileArgs[0], 2, 0, pgmR3CmdPhysToFile, "", "Save the physical memory to file." },
681	};
682	#endif
683
684
685
686
687	/*
688	* Shadow - 32-bit mode
689	*/
690	#define PGM_SHW_TYPE PGM_TYPE_32BIT
691	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
692	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_32BIT_STR(name)
693	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_32BIT_STR(name)
694	#include "PGMShw.h"
695
696	/* Guest - real mode */
697	#define PGM_GST_TYPE PGM_TYPE_REAL
698	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
699	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
700	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
701	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
702	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_REAL_STR(name)
703	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_REAL_STR(name)
704	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
705	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
706	#include "PGMBth.h"
707	#include "PGMGstDefs.h"
708	#include "PGMGst.h"
709	#undef BTH_PGMPOOLKIND_PT_FOR_PT
710	#undef BTH_PGMPOOLKIND_ROOT
711	#undef PGM_BTH_NAME
712	#undef PGM_BTH_NAME_RC_STR
713	#undef PGM_BTH_NAME_R0_STR
714	#undef PGM_GST_TYPE
715	#undef PGM_GST_NAME
716	#undef PGM_GST_NAME_RC_STR
717	#undef PGM_GST_NAME_R0_STR
718
719	/* Guest - protected mode */
720	#define PGM_GST_TYPE PGM_TYPE_PROT
721	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
722	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
723	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
724	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
725	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_PROT_STR(name)
726	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_PROT_STR(name)
727	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
728	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
729	#include "PGMBth.h"
730	#include "PGMGstDefs.h"
731	#include "PGMGst.h"
732	#undef BTH_PGMPOOLKIND_PT_FOR_PT
733	#undef BTH_PGMPOOLKIND_ROOT
734	#undef PGM_BTH_NAME
735	#undef PGM_BTH_NAME_RC_STR
736	#undef PGM_BTH_NAME_R0_STR
737	#undef PGM_GST_TYPE
738	#undef PGM_GST_NAME
739	#undef PGM_GST_NAME_RC_STR
740	#undef PGM_GST_NAME_R0_STR
741
742	/* Guest - 32-bit mode */
743	#define PGM_GST_TYPE PGM_TYPE_32BIT
744	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
745	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
746	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
747	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
748	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_32BIT_STR(name)
749	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_32BIT_STR(name)
750	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
751	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
752	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD
753	#include "PGMBth.h"
754	#include "PGMGstDefs.h"
755	#include "PGMGst.h"
756	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
757	#undef BTH_PGMPOOLKIND_PT_FOR_PT
758	#undef BTH_PGMPOOLKIND_ROOT
759	#undef PGM_BTH_NAME
760	#undef PGM_BTH_NAME_RC_STR
761	#undef PGM_BTH_NAME_R0_STR
762	#undef PGM_GST_TYPE
763	#undef PGM_GST_NAME
764	#undef PGM_GST_NAME_RC_STR
765	#undef PGM_GST_NAME_R0_STR
766
767	#undef PGM_SHW_TYPE
768	#undef PGM_SHW_NAME
769	#undef PGM_SHW_NAME_RC_STR
770	#undef PGM_SHW_NAME_R0_STR
771
772
773	/*
774	* Shadow - PAE mode
775	*/
776	#define PGM_SHW_TYPE PGM_TYPE_PAE
777	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
778	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_PAE_STR(name)
779	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_PAE_STR(name)
780	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
781	#include "PGMShw.h"
782
783	/* Guest - real mode */
784	#define PGM_GST_TYPE PGM_TYPE_REAL
785	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
786	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
787	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
788	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
789	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_REAL_STR(name)
790	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_REAL_STR(name)
791	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
792	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
793	#include "PGMGstDefs.h"
794	#include "PGMBth.h"
795	#undef BTH_PGMPOOLKIND_PT_FOR_PT
796	#undef BTH_PGMPOOLKIND_ROOT
797	#undef PGM_BTH_NAME
798	#undef PGM_BTH_NAME_RC_STR
799	#undef PGM_BTH_NAME_R0_STR
800	#undef PGM_GST_TYPE
801	#undef PGM_GST_NAME
802	#undef PGM_GST_NAME_RC_STR
803	#undef PGM_GST_NAME_R0_STR
804
805	/* Guest - protected mode */
806	#define PGM_GST_TYPE PGM_TYPE_PROT
807	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
808	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
809	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
810	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
811	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PROT_STR(name)
812	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PROT_STR(name)
813	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
814	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
815	#include "PGMGstDefs.h"
816	#include "PGMBth.h"
817	#undef BTH_PGMPOOLKIND_PT_FOR_PT
818	#undef BTH_PGMPOOLKIND_ROOT
819	#undef PGM_BTH_NAME
820	#undef PGM_BTH_NAME_RC_STR
821	#undef PGM_BTH_NAME_R0_STR
822	#undef PGM_GST_TYPE
823	#undef PGM_GST_NAME
824	#undef PGM_GST_NAME_RC_STR
825	#undef PGM_GST_NAME_R0_STR
826
827	/* Guest - 32-bit mode */
828	#define PGM_GST_TYPE PGM_TYPE_32BIT
829	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
830	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
831	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
832	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
833	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_32BIT_STR(name)
834	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_32BIT_STR(name)
835	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
836	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
837	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_FOR_32BIT
838	#include "PGMGstDefs.h"
839	#include "PGMBth.h"
840	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
841	#undef BTH_PGMPOOLKIND_PT_FOR_PT
842	#undef BTH_PGMPOOLKIND_ROOT
843	#undef PGM_BTH_NAME
844	#undef PGM_BTH_NAME_RC_STR
845	#undef PGM_BTH_NAME_R0_STR
846	#undef PGM_GST_TYPE
847	#undef PGM_GST_NAME
848	#undef PGM_GST_NAME_RC_STR
849	#undef PGM_GST_NAME_R0_STR
850
851	/* Guest - PAE mode */
852	#define PGM_GST_TYPE PGM_TYPE_PAE
853	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
854	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
855	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
856	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
857	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PAE_STR(name)
858	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PAE_STR(name)
859	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
860	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
861	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT
862	#include "PGMBth.h"
863	#include "PGMGstDefs.h"
864	#include "PGMGst.h"
865	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
866	#undef BTH_PGMPOOLKIND_PT_FOR_PT
867	#undef BTH_PGMPOOLKIND_ROOT
868	#undef PGM_BTH_NAME
869	#undef PGM_BTH_NAME_RC_STR
870	#undef PGM_BTH_NAME_R0_STR
871	#undef PGM_GST_TYPE
872	#undef PGM_GST_NAME
873	#undef PGM_GST_NAME_RC_STR
874	#undef PGM_GST_NAME_R0_STR
875
876	#undef PGM_SHW_TYPE
877	#undef PGM_SHW_NAME
878	#undef PGM_SHW_NAME_RC_STR
879	#undef PGM_SHW_NAME_R0_STR
880
881
882	/*
883	* Shadow - AMD64 mode
884	*/
885	#define PGM_SHW_TYPE PGM_TYPE_AMD64
886	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
887	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_AMD64_STR(name)
888	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_AMD64_STR(name)
889	#include "PGMShw.h"
890
891	#ifdef VBOX_WITH_64_BITS_GUESTS
892	/* Guest - AMD64 mode */
893	# define PGM_GST_TYPE PGM_TYPE_AMD64
894	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
895	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
896	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
897	# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
898	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_AMD64_AMD64_STR(name)
899	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_AMD64_AMD64_STR(name)
900	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
901	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
902	# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_64BIT_PML4
903	# include "PGMBth.h"
904	# include "PGMGstDefs.h"
905	# include "PGMGst.h"
906	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
907	# undef BTH_PGMPOOLKIND_PT_FOR_PT
908	# undef BTH_PGMPOOLKIND_ROOT
909	# undef PGM_BTH_NAME
910	# undef PGM_BTH_NAME_RC_STR
911	# undef PGM_BTH_NAME_R0_STR
912	# undef PGM_GST_TYPE
913	# undef PGM_GST_NAME
914	# undef PGM_GST_NAME_RC_STR
915	# undef PGM_GST_NAME_R0_STR
916	#endif /* VBOX_WITH_64_BITS_GUESTS */
917
918	#undef PGM_SHW_TYPE
919	#undef PGM_SHW_NAME
920	#undef PGM_SHW_NAME_RC_STR
921	#undef PGM_SHW_NAME_R0_STR
922
923
924	/*
925	* Shadow - Nested paging mode
926	*/
927	#define PGM_SHW_TYPE PGM_TYPE_NESTED
928	#define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
929	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_NESTED_STR(name)
930	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_NESTED_STR(name)
931	#include "PGMShw.h"
932
933	/* Guest - real mode */
934	#define PGM_GST_TYPE PGM_TYPE_REAL
935	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
936	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
937	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
938	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
939	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_REAL_STR(name)
940	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_REAL_STR(name)
941	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
942	#include "PGMGstDefs.h"
943	#include "PGMBth.h"
944	#undef BTH_PGMPOOLKIND_PT_FOR_PT
945	#undef PGM_BTH_NAME
946	#undef PGM_BTH_NAME_RC_STR
947	#undef PGM_BTH_NAME_R0_STR
948	#undef PGM_GST_TYPE
949	#undef PGM_GST_NAME
950	#undef PGM_GST_NAME_RC_STR
951	#undef PGM_GST_NAME_R0_STR
952
953	/* Guest - protected mode */
954	#define PGM_GST_TYPE PGM_TYPE_PROT
955	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
956	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
957	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
958	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
959	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PROT_STR(name)
960	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PROT_STR(name)
961	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
962	#include "PGMGstDefs.h"
963	#include "PGMBth.h"
964	#undef BTH_PGMPOOLKIND_PT_FOR_PT
965	#undef PGM_BTH_NAME
966	#undef PGM_BTH_NAME_RC_STR
967	#undef PGM_BTH_NAME_R0_STR
968	#undef PGM_GST_TYPE
969	#undef PGM_GST_NAME
970	#undef PGM_GST_NAME_RC_STR
971	#undef PGM_GST_NAME_R0_STR
972
973	/* Guest - 32-bit mode */
974	#define PGM_GST_TYPE PGM_TYPE_32BIT
975	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
976	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
977	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
978	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
979	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_32BIT_STR(name)
980	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_32BIT_STR(name)
981	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
982	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
983	#include "PGMGstDefs.h"
984	#include "PGMBth.h"
985	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
986	#undef BTH_PGMPOOLKIND_PT_FOR_PT
987	#undef PGM_BTH_NAME
988	#undef PGM_BTH_NAME_RC_STR
989	#undef PGM_BTH_NAME_R0_STR
990	#undef PGM_GST_TYPE
991	#undef PGM_GST_NAME
992	#undef PGM_GST_NAME_RC_STR
993	#undef PGM_GST_NAME_R0_STR
994
995	/* Guest - PAE mode */
996	#define PGM_GST_TYPE PGM_TYPE_PAE
997	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
998	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
999	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1000	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
1001	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PAE_STR(name)
1002	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PAE_STR(name)
1003	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1004	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1005	#include "PGMGstDefs.h"
1006	#include "PGMBth.h"
1007	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1008	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1009	#undef PGM_BTH_NAME
1010	#undef PGM_BTH_NAME_RC_STR
1011	#undef PGM_BTH_NAME_R0_STR
1012	#undef PGM_GST_TYPE
1013	#undef PGM_GST_NAME
1014	#undef PGM_GST_NAME_RC_STR
1015	#undef PGM_GST_NAME_R0_STR
1016
1017	#ifdef VBOX_WITH_64_BITS_GUESTS
1018	/* Guest - AMD64 mode */
1019	# define PGM_GST_TYPE PGM_TYPE_AMD64
1020	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1021	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1022	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1023	# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
1024	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_AMD64_STR(name)
1025	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_AMD64_STR(name)
1026	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1027	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1028	# include "PGMGstDefs.h"
1029	# include "PGMBth.h"
1030	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1031	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1032	# undef PGM_BTH_NAME
1033	# undef PGM_BTH_NAME_RC_STR
1034	# undef PGM_BTH_NAME_R0_STR
1035	# undef PGM_GST_TYPE
1036	# undef PGM_GST_NAME
1037	# undef PGM_GST_NAME_RC_STR
1038	# undef PGM_GST_NAME_R0_STR
1039	#endif /* VBOX_WITH_64_BITS_GUESTS */
1040
1041	#undef PGM_SHW_TYPE
1042	#undef PGM_SHW_NAME
1043	#undef PGM_SHW_NAME_RC_STR
1044	#undef PGM_SHW_NAME_R0_STR
1045
1046
1047	/*
1048	* Shadow - EPT
1049	*/
1050	#define PGM_SHW_TYPE PGM_TYPE_EPT
1051	#define PGM_SHW_NAME(name) PGM_SHW_NAME_EPT(name)
1052	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_EPT_STR(name)
1053	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_EPT_STR(name)
1054	#include "PGMShw.h"
1055
1056	/* Guest - real mode */
1057	#define PGM_GST_TYPE PGM_TYPE_REAL
1058	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
1059	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
1060	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
1061	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_REAL(name)
1062	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_REAL_STR(name)
1063	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_REAL_STR(name)
1064	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1065	#include "PGMGstDefs.h"
1066	#include "PGMBth.h"
1067	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1068	#undef PGM_BTH_NAME
1069	#undef PGM_BTH_NAME_RC_STR
1070	#undef PGM_BTH_NAME_R0_STR
1071	#undef PGM_GST_TYPE
1072	#undef PGM_GST_NAME
1073	#undef PGM_GST_NAME_RC_STR
1074	#undef PGM_GST_NAME_R0_STR
1075
1076	/* Guest - protected mode */
1077	#define PGM_GST_TYPE PGM_TYPE_PROT
1078	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
1079	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
1080	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
1081	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PROT(name)
1082	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PROT_STR(name)
1083	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PROT_STR(name)
1084	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1085	#include "PGMGstDefs.h"
1086	#include "PGMBth.h"
1087	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1088	#undef PGM_BTH_NAME
1089	#undef PGM_BTH_NAME_RC_STR
1090	#undef PGM_BTH_NAME_R0_STR
1091	#undef PGM_GST_TYPE
1092	#undef PGM_GST_NAME
1093	#undef PGM_GST_NAME_RC_STR
1094	#undef PGM_GST_NAME_R0_STR
1095
1096	/* Guest - 32-bit mode */
1097	#define PGM_GST_TYPE PGM_TYPE_32BIT
1098	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1099	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1100	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1101	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_32BIT(name)
1102	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_32BIT_STR(name)
1103	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_32BIT_STR(name)
1104	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1105	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1106	#include "PGMGstDefs.h"
1107	#include "PGMBth.h"
1108	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1109	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1110	#undef PGM_BTH_NAME
1111	#undef PGM_BTH_NAME_RC_STR
1112	#undef PGM_BTH_NAME_R0_STR
1113	#undef PGM_GST_TYPE
1114	#undef PGM_GST_NAME
1115	#undef PGM_GST_NAME_RC_STR
1116	#undef PGM_GST_NAME_R0_STR
1117
1118	/* Guest - PAE mode */
1119	#define PGM_GST_TYPE PGM_TYPE_PAE
1120	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1121	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1122	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1123	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PAE(name)
1124	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PAE_STR(name)
1125	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PAE_STR(name)
1126	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1127	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1128	#include "PGMGstDefs.h"
1129	#include "PGMBth.h"
1130	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1131	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1132	#undef PGM_BTH_NAME
1133	#undef PGM_BTH_NAME_RC_STR
1134	#undef PGM_BTH_NAME_R0_STR
1135	#undef PGM_GST_TYPE
1136	#undef PGM_GST_NAME
1137	#undef PGM_GST_NAME_RC_STR
1138	#undef PGM_GST_NAME_R0_STR
1139
1140	#ifdef VBOX_WITH_64_BITS_GUESTS
1141	/* Guest - AMD64 mode */
1142	# define PGM_GST_TYPE PGM_TYPE_AMD64
1143	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1144	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1145	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1146	# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_AMD64(name)
1147	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_AMD64_STR(name)
1148	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_AMD64_STR(name)
1149	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1150	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1151	# include "PGMGstDefs.h"
1152	# include "PGMBth.h"
1153	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1154	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1155	# undef PGM_BTH_NAME
1156	# undef PGM_BTH_NAME_RC_STR
1157	# undef PGM_BTH_NAME_R0_STR
1158	# undef PGM_GST_TYPE
1159	# undef PGM_GST_NAME
1160	# undef PGM_GST_NAME_RC_STR
1161	# undef PGM_GST_NAME_R0_STR
1162	#endif /* VBOX_WITH_64_BITS_GUESTS */
1163
1164	#undef PGM_SHW_TYPE
1165	#undef PGM_SHW_NAME
1166	#undef PGM_SHW_NAME_RC_STR
1167	#undef PGM_SHW_NAME_R0_STR
1168
1169
1170
1171	/**
1172	* Initiates the paging of VM.
1173	*
1174	* @returns VBox status code.
1175	* @param pVM Pointer to VM structure.
1176	*/
1177	VMMR3DECL(int) PGMR3Init(PVM pVM)
1178	{
1179	LogFlow(("PGMR3Init:\n"));
1180	PCFGMNODE pCfgPGM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM");
1181	int rc;
1182
1183	/*
1184	* Assert alignment and sizes.
1185	*/
1186	AssertCompile(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
1187	AssertCompile(sizeof(pVM->aCpus[0].pgm.s) <= sizeof(pVM->aCpus[0].pgm.padding));
1188	AssertCompileMemberAlignment(PGM, CritSectX, sizeof(uintptr_t));
1189
1190	/*
1191	* Init the structure.
1192	*/
1193	#ifdef PGM_WITHOUT_MAPPINGS
1194	pVM->pgm.s.fMappingsDisabled = true;
1195	#endif
1196	pVM->pgm.s.offVM = RT_OFFSETOF(VM, pgm.s);
1197	pVM->pgm.s.offVCpuPGM = RT_OFFSETOF(VMCPU, pgm.s);
1198
1199	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aHandyPages); i++)
1200	{
1201	pVM->pgm.s.aHandyPages[i].HCPhysGCPhys = NIL_RTHCPHYS;
1202	pVM->pgm.s.aHandyPages[i].idPage = NIL_GMM_PAGEID;
1203	pVM->pgm.s.aHandyPages[i].idSharedPage = NIL_GMM_PAGEID;
1204	}
1205
1206	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aLargeHandyPage); i++)
1207	{
1208	pVM->pgm.s.aLargeHandyPage[i].HCPhysGCPhys = NIL_RTHCPHYS;
1209	pVM->pgm.s.aLargeHandyPage[i].idPage = NIL_GMM_PAGEID;
1210	pVM->pgm.s.aLargeHandyPage[i].idSharedPage = NIL_GMM_PAGEID;
1211	}
1212
1213	/* Init the per-CPU part. */
1214	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1215	{
1216	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1217	PPGMCPU pPGM = &pVCpu->pgm.s;
1218
1219	pPGM->offVM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)pVM;
1220	pPGM->offVCpu = RT_OFFSETOF(VMCPU, pgm.s);
1221	pPGM->offPGM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)&pVM->pgm.s;
1222
1223	pPGM->enmShadowMode = PGMMODE_INVALID;
1224	pPGM->enmGuestMode = PGMMODE_INVALID;
1225
1226	pPGM->GCPhysCR3 = NIL_RTGCPHYS;
1227
1228	pPGM->pGst32BitPdR3 = NULL;
1229	pPGM->pGstPaePdptR3 = NULL;
1230	pPGM->pGstAmd64Pml4R3 = NULL;
1231	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1232	pPGM->pGst32BitPdR0 = NIL_RTR0PTR;
1233	pPGM->pGstPaePdptR0 = NIL_RTR0PTR;
1234	pPGM->pGstAmd64Pml4R0 = NIL_RTR0PTR;
1235	#endif
1236	pPGM->pGst32BitPdRC = NIL_RTRCPTR;
1237	pPGM->pGstPaePdptRC = NIL_RTRCPTR;
1238	for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsR3); i++)
1239	{
1240	pPGM->apGstPaePDsR3[i] = NULL;
1241	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1242	pPGM->apGstPaePDsR0[i] = NIL_RTR0PTR;
1243	#endif
1244	pPGM->apGstPaePDsRC[i] = NIL_RTRCPTR;
1245	pPGM->aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
1246	pPGM->aGstPaePdpeRegs[i].u = UINT64_MAX;
1247	pPGM->aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
1248	}
1249
1250	pPGM->fA20Enabled = true;
1251	}
1252
1253	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1254	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1; /* default; checked later */
1255	pVM->pgm.s.GCPtrPrevRamRangeMapping = MM_HYPER_AREA_ADDRESS;
1256
1257	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "RamPreAlloc", &pVM->pgm.s.fRamPreAlloc,
1258	#ifdef VBOX_WITH_PREALLOC_RAM_BY_DEFAULT
1259	true
1260	#else
1261	false
1262	#endif
1263	);
1264	AssertLogRelRCReturn(rc, rc);
1265
1266	#if HC_ARCH_BITS == 32
1267	# ifdef RT_OS_DARWIN
1268	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE * 3);
1269	# else
1270	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE);
1271	# endif
1272	#else
1273	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, UINT32_MAX);
1274	#endif
1275	AssertLogRelRCReturn(rc, rc);
1276	for (uint32_t i = 0; i < RT_ELEMENTS(pVM->pgm.s.ChunkR3Map.Tlb.aEntries); i++)
1277	pVM->pgm.s.ChunkR3Map.Tlb.aEntries[i].idChunk = NIL_GMM_CHUNKID;
1278
1279	/*
1280	* Get the configured RAM size - to estimate saved state size.
1281	*/
1282	uint64_t cbRam;
1283	rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
1284	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1285	cbRam = 0;
1286	else if (RT_SUCCESS(rc))
1287	{
1288	if (cbRam < PAGE_SIZE)
1289	cbRam = 0;
1290	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
1291	}
1292	else
1293	{
1294	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc));
1295	return rc;
1296	}
1297
1298	/*
1299	* Check for PCI pass-through.
1300	*/
1301	rc = CFGMR3QueryBoolDef(pCfgPGM, "PciPassThrough", &pVM->pgm.s.fPciPassthrough, false);
1302	AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"PciPassThrough\", rc=%Rrc.\n", rc), rc);
1303	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough \|\| pVM->pgm.s.fRamPreAlloc, VERR_INVALID_PARAMETER);
1304
1305	#ifdef VBOX_WITH_STATISTICS
1306	/*
1307	* Allocate memory for the statistics before someone tries to use them.
1308	*/
1309	size_t cbTotalStats = RT_ALIGN_Z(sizeof(PGMSTATS), 64) + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64) * pVM->cCpus;
1310	void *pv;
1311	rc = MMHyperAlloc(pVM, RT_ALIGN_Z(cbTotalStats, PAGE_SIZE), PAGE_SIZE, MM_TAG_PGM, &pv);
1312	AssertRCReturn(rc, rc);
1313
1314	pVM->pgm.s.pStatsR3 = (PGMSTATS *)pv;
1315	pVM->pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1316	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1317	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMSTATS), 64);
1318
1319	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
1320	{
1321	pVM->aCpus[iCpu].pgm.s.pStatsR3 = (PGMCPUSTATS *)pv;
1322	pVM->aCpus[iCpu].pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1323	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1324
1325	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64);
1326	}
1327	#endif /* VBOX_WITH_STATISTICS */
1328
1329	/*
1330	* Register callbacks, string formatters and the saved state data unit.
1331	*/
1332	#ifdef VBOX_STRICT
1333	VMR3AtStateRegister(pVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
1334	#endif
1335	PGMRegisterStringFormatTypes();
1336
1337	rc = pgmR3InitSavedState(pVM, cbRam);
1338	if (RT_FAILURE(rc))
1339	return rc;
1340
1341	/*
1342	* Initialize the PGM critical section and flush the phys TLBs
1343	*/
1344	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSectX, RT_SRC_POS, "PGM");
1345	AssertRCReturn(rc, rc);
1346
1347	PGMR3PhysChunkInvalidateTLB(pVM);
1348	pgmPhysInvalidatePageMapTLB(pVM);
1349
1350	/*
1351	* For the time being we sport a full set of handy pages in addition to the base
1352	* memory to simplify things.
1353	*/
1354	rc = MMR3ReserveHandyPages(pVM, RT_ELEMENTS(pVM->pgm.s.aHandyPages)); /** @todo this should be changed to PGM_HANDY_PAGES_MIN but this needs proper testing... */
1355	AssertRCReturn(rc, rc);
1356
1357	/*
1358	* Trees
1359	*/
1360	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesR3);
1361	if (RT_SUCCESS(rc))
1362	{
1363	pVM->pgm.s.pTreesR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pTreesR3);
1364	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
1365
1366	/*
1367	* Allocate the zero page.
1368	*/
1369	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
1370	}
1371	if (RT_SUCCESS(rc))
1372	{
1373	pVM->pgm.s.pvZeroPgRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pvZeroPgR3);
1374	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1375	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
1376	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
1377
1378	/*
1379	* Allocate the invalid MMIO page.
1380	* (The invalid bits in HCPhysInvMmioPg are set later on init complete.)
1381	*/
1382	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvMmioPgR3);
1383	}
1384	if (RT_SUCCESS(rc))
1385	{
1386	ASMMemFill32(pVM->pgm.s.pvMmioPgR3, PAGE_SIZE, 0xfeedface);
1387	pVM->pgm.s.HCPhysMmioPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvMmioPgR3);
1388	AssertRelease(pVM->pgm.s.HCPhysMmioPg != NIL_RTHCPHYS);
1389	pVM->pgm.s.HCPhysInvMmioPg = pVM->pgm.s.HCPhysMmioPg;
1390
1391	/*
1392	* Init the paging.
1393	*/
1394	rc = pgmR3InitPaging(pVM);
1395	}
1396	if (RT_SUCCESS(rc))
1397	{
1398	/*
1399	* Init the page pool.
1400	*/
1401	rc = pgmR3PoolInit(pVM);
1402	}
1403	if (RT_SUCCESS(rc))
1404	{
1405	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1406	{
1407	PVMCPU pVCpu = &pVM->aCpus[i];
1408	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
1409	if (RT_FAILURE(rc))
1410	break;
1411	}
1412	}
1413
1414	if (RT_SUCCESS(rc))
1415	{
1416	/*
1417	* Info & statistics
1418	*/
1419	DBGFR3InfoRegisterInternal(pVM, "mode",
1420	"Shows the current paging mode. "
1421	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing is given.",
1422	pgmR3InfoMode);
1423	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
1424	"Dumps all the entries in the top level paging table. No arguments.",
1425	pgmR3InfoCr3);
1426	DBGFR3InfoRegisterInternal(pVM, "phys",
1427	"Dumps all the physical address ranges. No arguments.",
1428	pgmR3PhysInfo);
1429	DBGFR3InfoRegisterInternal(pVM, "handlers",
1430	"Dumps physical, virtual and hyper virtual handlers. "
1431	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
1432	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
1433	pgmR3InfoHandlers);
1434	DBGFR3InfoRegisterInternal(pVM, "mappings",
1435	"Dumps guest mappings.",
1436	pgmR3MapInfo);
1437
1438	pgmR3InitStats(pVM);
1439
1440	#ifdef VBOX_WITH_DEBUGGER
1441	/*
1442	* Debugger commands.
1443	*/
1444	static bool s_fRegisteredCmds = false;
1445	if (!s_fRegisteredCmds)
1446	{
1447	int rc2 = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
1448	if (RT_SUCCESS(rc2))
1449	s_fRegisteredCmds = true;
1450	}
1451	#endif
1452	return VINF_SUCCESS;
1453	}
1454
1455	/* Almost no cleanup necessary, MM frees all memory. */
1456	PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
1457
1458	return rc;
1459	}
1460
1461
1462	/**
1463	* Init paging.
1464	*
1465	* Since we need to check what mode the host is operating in before we can choose
1466	* the right paging functions for the host we have to delay this until R0 has
1467	* been initialized.
1468	*
1469	* @returns VBox status code.
1470	* @param pVM VM handle.
1471	*/
1472	static int pgmR3InitPaging(PVM pVM)
1473	{
1474	/*
1475	* Force a recalculation of modes and switcher so everyone gets notified.
1476	*/
1477	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1478	{
1479	PVMCPU pVCpu = &pVM->aCpus[i];
1480
1481	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
1482	pVCpu->pgm.s.enmGuestMode = PGMMODE_INVALID;
1483	}
1484
1485	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1486
1487	/*
1488	* Allocate static mapping space for whatever the cr3 register
1489	* points to and in the case of PAE mode to the 4 PDs.
1490	*/
1491	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * 5, "CR3 mapping", &pVM->pgm.s.GCPtrCR3Mapping);
1492	if (RT_FAILURE(rc))
1493	{
1494	AssertMsgFailed(("Failed to reserve two pages for cr mapping in HMA, rc=%Rrc\n", rc));
1495	return rc;
1496	}
1497	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1498
1499	/*
1500	* Allocate pages for the three possible intermediate contexts
1501	* (AMD64, PAE and plain 32-Bit). We maintain all three contexts
1502	* for the sake of simplicity. The AMD64 uses the PAE for the
1503	* lower levels, making the total number of pages 11 (3 + 7 + 1).
1504	*
1505	* We assume that two page tables will be enought for the core code
1506	* mappings (HC virtual and identity).
1507	*/
1508	pVM->pgm.s.pInterPD = (PX86PD)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPD, VERR_NO_PAGE_MEMORY);
1509	pVM->pgm.s.apInterPTs[0] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[0], VERR_NO_PAGE_MEMORY);
1510	pVM->pgm.s.apInterPTs[1] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[1], VERR_NO_PAGE_MEMORY);
1511	pVM->pgm.s.apInterPaePTs[0] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[0], VERR_NO_PAGE_MEMORY);
1512	pVM->pgm.s.apInterPaePTs[1] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[1], VERR_NO_PAGE_MEMORY);
1513	pVM->pgm.s.apInterPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[0], VERR_NO_PAGE_MEMORY);
1514	pVM->pgm.s.apInterPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[1], VERR_NO_PAGE_MEMORY);
1515	pVM->pgm.s.apInterPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[2], VERR_NO_PAGE_MEMORY);
1516	pVM->pgm.s.apInterPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[3], VERR_NO_PAGE_MEMORY);
1517	pVM->pgm.s.pInterPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT, VERR_NO_PAGE_MEMORY);
1518	pVM->pgm.s.pInterPaePDPT64 = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT64, VERR_NO_PAGE_MEMORY);
1519	pVM->pgm.s.pInterPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePML4, VERR_NO_PAGE_MEMORY);
1520
1521	pVM->pgm.s.HCPhysInterPD = MMPage2Phys(pVM, pVM->pgm.s.pInterPD);
1522	AssertRelease(pVM->pgm.s.HCPhysInterPD != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPD & PAGE_OFFSET_MASK));
1523	pVM->pgm.s.HCPhysInterPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT);
1524	AssertRelease(pVM->pgm.s.HCPhysInterPaePDPT != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePDPT & PAGE_OFFSET_MASK));
1525	pVM->pgm.s.HCPhysInterPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePML4);
1526	AssertRelease(pVM->pgm.s.HCPhysInterPaePML4 != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePML4 & PAGE_OFFSET_MASK) && pVM->pgm.s.HCPhysInterPaePML4 < 0xffffffff);
1527
1528	/*
1529	* Initialize the pages, setting up the PML4 and PDPT for repetitive 4GB action.
1530	*/
1531	ASMMemZeroPage(pVM->pgm.s.pInterPD);
1532	ASMMemZeroPage(pVM->pgm.s.apInterPTs[0]);
1533	ASMMemZeroPage(pVM->pgm.s.apInterPTs[1]);
1534
1535	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[0]);
1536	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[1]);
1537
1538	ASMMemZeroPage(pVM->pgm.s.pInterPaePDPT);
1539	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.apInterPaePDs); i++)
1540	{
1541	ASMMemZeroPage(pVM->pgm.s.apInterPaePDs[i]);
1542	pVM->pgm.s.pInterPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT
1543	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[i]);
1544	}
1545
1546	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePDPT64->a); i++)
1547	{
1548	const unsigned iPD = i % RT_ELEMENTS(pVM->pgm.s.apInterPaePDs);
1549	pVM->pgm.s.pInterPaePDPT64->a[i].u = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A \| PGM_PLXFLAGS_PERMANENT
1550	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[iPD]);
1551	}
1552
1553	RTHCPHYS HCPhysInterPaePDPT64 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64);
1554	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePML4->a); i++)
1555	pVM->pgm.s.pInterPaePML4->a[i].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A \| PGM_PLXFLAGS_PERMANENT
1556	\| HCPhysInterPaePDPT64;
1557
1558	/*
1559	* Initialize paging workers and mode from current host mode
1560	* and the guest running in real mode.
1561	*/
1562	pVM->pgm.s.enmHostMode = SUPR3GetPagingMode();
1563	switch (pVM->pgm.s.enmHostMode)
1564	{
1565	case SUPPAGINGMODE_32_BIT:
1566	case SUPPAGINGMODE_32_BIT_GLOBAL:
1567	case SUPPAGINGMODE_PAE:
1568	case SUPPAGINGMODE_PAE_GLOBAL:
1569	case SUPPAGINGMODE_PAE_NX:
1570	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1571	break;
1572
1573	case SUPPAGINGMODE_AMD64:
1574	case SUPPAGINGMODE_AMD64_GLOBAL:
1575	case SUPPAGINGMODE_AMD64_NX:
1576	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1577	#ifndef VBOX_WITH_HYBRID_32BIT_KERNEL
1578	if (ARCH_BITS != 64)
1579	{
1580	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1581	LogRel(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1582	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1583	}
1584	#endif
1585	break;
1586	default:
1587	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1588	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1589	}
1590	rc = pgmR3ModeDataInit(pVM, false /* don't resolve GC and R0 syms yet */);
1591	if (RT_SUCCESS(rc))
1592	{
1593	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1594	#if HC_ARCH_BITS == 64
1595	LogRel(("Debug: HCPhysInterPD=%RHp HCPhysInterPaePDPT=%RHp HCPhysInterPaePML4=%RHp\n",
1596	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1597	LogRel(("Debug: apInterPTs={%RHp,%RHp} apInterPaePTs={%RHp,%RHp} apInterPaePDs={%RHp,%RHp,%RHp,%RHp} pInterPaePDPT64=%RHp\n",
1598	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1599	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1600	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[1]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[2]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[3]),
1601	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1602	#endif
1603
1604	/*
1605	* Log the host paging mode. It may come in handy.
1606	*/
1607	const char *pszHostMode;
1608	switch (pVM->pgm.s.enmHostMode)
1609	{
1610	case SUPPAGINGMODE_32_BIT: pszHostMode = "32-bit"; break;
1611	case SUPPAGINGMODE_32_BIT_GLOBAL: pszHostMode = "32-bit+PGE"; break;
1612	case SUPPAGINGMODE_PAE: pszHostMode = "PAE"; break;
1613	case SUPPAGINGMODE_PAE_GLOBAL: pszHostMode = "PAE+PGE"; break;
1614	case SUPPAGINGMODE_PAE_NX: pszHostMode = "PAE+NXE"; break;
1615	case SUPPAGINGMODE_PAE_GLOBAL_NX: pszHostMode = "PAE+PGE+NXE"; break;
1616	case SUPPAGINGMODE_AMD64: pszHostMode = "AMD64"; break;
1617	case SUPPAGINGMODE_AMD64_GLOBAL: pszHostMode = "AMD64+PGE"; break;
1618	case SUPPAGINGMODE_AMD64_NX: pszHostMode = "AMD64+NX"; break;
1619	case SUPPAGINGMODE_AMD64_GLOBAL_NX: pszHostMode = "AMD64+PGE+NX"; break;
1620	default: pszHostMode = "???"; break;
1621	}
1622	LogRel(("Host paging mode: %s\n", pszHostMode));
1623
1624	return VINF_SUCCESS;
1625	}
1626
1627	LogFlow(("pgmR3InitPaging: returns %Rrc\n", rc));
1628	return rc;
1629	}
1630
1631
1632	/**
1633	* Init statistics
1634	* @returns VBox status code.
1635	*/
1636	static int pgmR3InitStats(PVM pVM)
1637	{
1638	PPGM pPGM = &pVM->pgm.s;
1639	int rc;
1640
1641	/*
1642	* Release statistics.
1643	*/
1644	/* Common - misc variables */
1645	STAM_REL_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_COUNT, "The total number of pages.");
1646	STAM_REL_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_COUNT, "The number of private pages.");
1647	STAM_REL_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_COUNT, "The number of shared pages.");
1648	STAM_REL_REG(pVM, &pPGM->cReusedSharedPages, STAMTYPE_U32, "/PGM/Page/cReusedSharedPages", STAMUNIT_COUNT, "The number of reused shared pages.");
1649	STAM_REL_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_COUNT, "The number of zero backed pages.");
1650	STAM_REL_REG(pVM, &pPGM->cPureMmioPages, STAMTYPE_U32, "/PGM/Page/cPureMmioPages", STAMUNIT_COUNT, "The number of pure MMIO pages.");
1651	STAM_REL_REG(pVM, &pPGM->cMonitoredPages, STAMTYPE_U32, "/PGM/Page/cMonitoredPages", STAMUNIT_COUNT, "The number of write monitored pages.");
1652	STAM_REL_REG(pVM, &pPGM->cWrittenToPages, STAMTYPE_U32, "/PGM/Page/cWrittenToPages", STAMUNIT_COUNT, "The number of previously write monitored pages that have been written to.");
1653	STAM_REL_REG(pVM, &pPGM->cWriteLockedPages, STAMTYPE_U32, "/PGM/Page/cWriteLockedPages", STAMUNIT_COUNT, "The number of write(/read) locked pages.");
1654	STAM_REL_REG(pVM, &pPGM->cReadLockedPages, STAMTYPE_U32, "/PGM/Page/cReadLockedPages", STAMUNIT_COUNT, "The number of read (only) locked pages.");
1655	STAM_REL_REG(pVM, &pPGM->cBalloonedPages, STAMTYPE_U32, "/PGM/Page/cBalloonedPages", STAMUNIT_COUNT, "The number of ballooned pages.");
1656	STAM_REL_REG(pVM, &pPGM->cHandyPages, STAMTYPE_U32, "/PGM/Page/cHandyPages", STAMUNIT_COUNT, "The number of handy pages (not included in cAllPages).");
1657	STAM_REL_REG(pVM, &pPGM->cLargePages, STAMTYPE_U32, "/PGM/Page/cLargePages", STAMUNIT_COUNT, "The number of large pages allocated (includes disabled).");
1658	STAM_REL_REG(pVM, &pPGM->cLargePagesDisabled, STAMTYPE_U32, "/PGM/Page/cLargePagesDisabled", STAMUNIT_COUNT, "The number of disabled large pages.");
1659	STAM_REL_REG(pVM, &pPGM->cRelocations, STAMTYPE_COUNTER, "/PGM/cRelocations", STAMUNIT_OCCURENCES,"Number of hypervisor relocations.");
1660	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_COUNT, "Number of mapped chunks.");
1661	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_COUNT, "Maximum number of mapped chunks.");
1662	STAM_REL_REG(pVM, &pPGM->cMappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Mapped", STAMUNIT_COUNT, "Number of times we mapped a chunk.");
1663	STAM_REL_REG(pVM, &pPGM->cUnmappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Unmapped", STAMUNIT_COUNT, "Number of times we unmapped a chunk.");
1664
1665	STAM_REL_REG(pVM, &pPGM->StatLargePageReused, STAMTYPE_COUNTER, "/PGM/LargePage/Reused", STAMUNIT_OCCURENCES, "The number of times we've reused a large page.");
1666	STAM_REL_REG(pVM, &pPGM->StatLargePageRefused, STAMTYPE_COUNTER, "/PGM/LargePage/Refused", STAMUNIT_OCCURENCES, "The number of times we couldn't use a large page.");
1667	STAM_REL_REG(pVM, &pPGM->StatLargePageRecheck, STAMTYPE_COUNTER, "/PGM/LargePage/Recheck", STAMUNIT_OCCURENCES, "The number of times we've rechecked a disabled large page.");
1668
1669	STAM_REL_REG(pVM, &pPGM->StatShModCheck, STAMTYPE_PROFILE, "/PGM/ShMod/Check", STAMUNIT_TICKS_PER_CALL, "Profiles the shared module checking.");
1670
1671	/* Live save */
1672	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.fActive, STAMTYPE_U8, "/PGM/LiveSave/fActive", STAMUNIT_COUNT, "Active or not.");
1673	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cIgnoredPages, STAMTYPE_U32, "/PGM/LiveSave/cIgnoredPages", STAMUNIT_COUNT, "The number of ignored pages in the RAM ranges (i.e. MMIO, MMIO2 and ROM).");
1674	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesLong, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesLong", STAMUNIT_COUNT, "Longer term dirty page average.");
1675	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesShort, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesShort", STAMUNIT_COUNT, "Short term dirty page average.");
1676	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cPagesPerSecond, STAMTYPE_U32, "/PGM/LiveSave/cPagesPerSecond", STAMUNIT_COUNT, "Pages per second.");
1677	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cSavedPages, STAMTYPE_U64, "/PGM/LiveSave/cSavedPages", STAMUNIT_COUNT, "The total number of saved pages.");
1678	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cReadPages", STAMUNIT_COUNT, "RAM: Ready pages.");
1679	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cDirtyPages", STAMUNIT_COUNT, "RAM: Dirty pages.");
1680	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cZeroPages", STAMUNIT_COUNT, "RAM: Ready zero pages.");
1681	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cMonitoredPages", STAMUNIT_COUNT, "RAM: Write monitored pages.");
1682	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cReadPages", STAMUNIT_COUNT, "ROM: Ready pages.");
1683	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cDirtyPages", STAMUNIT_COUNT, "ROM: Dirty pages.");
1684	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cZeroPages", STAMUNIT_COUNT, "ROM: Ready zero pages.");
1685	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cMonitoredPages", STAMUNIT_COUNT, "ROM: Write monitored pages.");
1686	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cReadPages", STAMUNIT_COUNT, "MMIO2: Ready pages.");
1687	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cDirtyPages", STAMUNIT_COUNT, "MMIO2: Dirty pages.");
1688	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cZeroPages", STAMUNIT_COUNT, "MMIO2: Ready zero pages.");
1689	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cMonitoredPages,STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cMonitoredPages",STAMUNIT_COUNT, "MMIO2: Write monitored pages.");
1690
1691	#ifdef VBOX_WITH_STATISTICS
1692
1693	# define PGM_REG_COUNTER(a, b, c) \
1694	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b); \
1695	AssertRC(rc);
1696
1697	# define PGM_REG_COUNTER_BYTES(a, b, c) \
1698	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, c, b); \
1699	AssertRC(rc);
1700
1701	# define PGM_REG_PROFILE(a, b, c) \
1702	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b); \
1703	AssertRC(rc);
1704
1705	PGMSTATS *pStats = pVM->pgm.s.pStatsR3;
1706
1707	PGM_REG_PROFILE(&pStats->StatAllocLargePage, "/PGM/LargePage/Prof/Alloc", "Time spent by the host OS for large page allocation.");
1708	PGM_REG_PROFILE(&pStats->StatClearLargePage, "/PGM/LargePage/Prof/Clear", "Time spent clearing the newly allocated large pages.");
1709	PGM_REG_COUNTER(&pStats->StatLargePageOverflow, "/PGM/LargePage/Overflow", "The number of times allocating a large page took too long.");
1710	PGM_REG_PROFILE(&pStats->StatR3IsValidLargePage, "/PGM/LargePage/Prof/R3/IsValid", "pgmPhysIsValidLargePage profiling - R3.");
1711	PGM_REG_PROFILE(&pStats->StatRZIsValidLargePage, "/PGM/LargePage/Prof/RZ/IsValid", "pgmPhysIsValidLargePage profiling - RZ.");
1712
1713	PGM_REG_COUNTER(&pStats->StatR3DetectedConflicts, "/PGM/R3/DetectedConflicts", "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1714	PGM_REG_PROFILE(&pStats->StatR3ResolveConflict, "/PGM/R3/ResolveConflict", "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1715	PGM_REG_COUNTER(&pStats->StatR3PhysRead, "/PGM/R3/Phys/Read", "The number of times PGMPhysRead was called.");
1716	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysReadBytes, "/PGM/R3/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1717	PGM_REG_COUNTER(&pStats->StatR3PhysWrite, "/PGM/R3/Phys/Write", "The number of times PGMPhysWrite was called.");
1718	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysWriteBytes, "/PGM/R3/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1719	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleRead, "/PGM/R3/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1720	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleReadBytes, "/PGM/R3/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1721	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleWrite, "/PGM/R3/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1722	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleWriteBytes, "/PGM/R3/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1723
1724	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsRZ", "TLB hits.");
1725	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesRZ", "TLB misses.");
1726	PGM_REG_PROFILE(&pStats->StatChunkAging, "/PGM/ChunkR3Map/Map/Aging", "Chunk aging profiling.");
1727	PGM_REG_PROFILE(&pStats->StatChunkFindCandidate, "/PGM/ChunkR3Map/Map/Find", "Chunk unmap find profiling.");
1728	PGM_REG_PROFILE(&pStats->StatChunkUnmap, "/PGM/ChunkR3Map/Map/Unmap", "Chunk unmap of address space profiling.");
1729	PGM_REG_PROFILE(&pStats->StatChunkMap, "/PGM/ChunkR3Map/Map/Map", "Chunk map of address space profiling.");
1730
1731	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbHits, "/PGM/RZ/Page/MapTlbHits", "TLB hits.");
1732	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbMisses, "/PGM/RZ/Page/MapTlbMisses", "TLB misses.");
1733	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsR3", "TLB hits.");
1734	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesR3", "TLB misses.");
1735	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbHits, "/PGM/R3/Page/MapTlbHits", "TLB hits.");
1736	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbMisses, "/PGM/R3/Page/MapTlbMisses", "TLB misses.");
1737	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushes, "/PGM/R3/Page/MapTlbFlushes", "TLB flushes (all contexts).");
1738	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushEntry, "/PGM/R3/Page/MapTlbFlushEntry", "TLB entry flushes (all contexts).");
1739
1740	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbHits, "/PGM/RZ/RamRange/TlbHits", "TLB hits.");
1741	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbMisses, "/PGM/RZ/RamRange/TlbMisses", "TLB misses.");
1742	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbHits, "/PGM/R3/RamRange/TlbHits", "TLB hits.");
1743	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbMisses, "/PGM/R3/RamRange/TlbMisses", "TLB misses.");
1744
1745	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualUpdate, "/PGM/RZ/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1746	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualReset, "/PGM/RZ/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1747	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualUpdate, "/PGM/R3/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1748	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualReset, "/PGM/R3/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1749
1750	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerReset, "/PGM/RZ/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1751	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerReset, "/PGM/R3/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1752	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupHits, "/PGM/RZ/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1753	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupHits, "/PGM/R3/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1754	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupMisses, "/PGM/RZ/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1755	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupMisses, "/PGM/R3/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1756	PGM_REG_PROFILE(&pStats->StatRZVirtHandlerSearchByPhys, "/PGM/RZ/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1757	PGM_REG_PROFILE(&pStats->StatR3VirtHandlerSearchByPhys, "/PGM/R3/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1758
1759	PGM_REG_COUNTER(&pStats->StatRZPageReplaceShared, "/PGM/RZ/Page/ReplacedShared", "Times a shared page was replaced.");
1760	PGM_REG_COUNTER(&pStats->StatRZPageReplaceZero, "/PGM/RZ/Page/ReplacedZero", "Times the zero page was replaced.");
1761	/// @todo PGM_REG_COUNTER(&pStats->StatRZPageHandyAllocs, "/PGM/RZ/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1762	PGM_REG_COUNTER(&pStats->StatR3PageReplaceShared, "/PGM/R3/Page/ReplacedShared", "Times a shared page was replaced.");
1763	PGM_REG_COUNTER(&pStats->StatR3PageReplaceZero, "/PGM/R3/Page/ReplacedZero", "Times the zero page was replaced.");
1764	/// @todo PGM_REG_COUNTER(&pStats->StatR3PageHandyAllocs, "/PGM/R3/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1765
1766	PGM_REG_COUNTER(&pStats->StatRZPhysRead, "/PGM/RZ/Phys/Read", "The number of times PGMPhysRead was called.");
1767	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysReadBytes, "/PGM/RZ/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1768	PGM_REG_COUNTER(&pStats->StatRZPhysWrite, "/PGM/RZ/Phys/Write", "The number of times PGMPhysWrite was called.");
1769	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysWriteBytes, "/PGM/RZ/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1770	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleRead, "/PGM/RZ/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1771	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleReadBytes, "/PGM/RZ/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1772	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleWrite, "/PGM/RZ/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1773	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleWriteBytes, "/PGM/RZ/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1774
1775	/* GC only: */
1776	PGM_REG_COUNTER(&pStats->StatRCInvlPgConflict, "/PGM/RC/InvlPgConflict", "Number of times PGMInvalidatePage() detected a mapping conflict.");
1777	PGM_REG_COUNTER(&pStats->StatRCInvlPgSyncMonCR3, "/PGM/RC/InvlPgSyncMonitorCR3", "Number of times PGMInvalidatePage() ran into PGM_SYNC_MONITOR_CR3.");
1778
1779	PGM_REG_COUNTER(&pStats->StatRCPhysRead, "/PGM/RC/Phys/Read", "The number of times PGMPhysRead was called.");
1780	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysReadBytes, "/PGM/RC/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1781	PGM_REG_COUNTER(&pStats->StatRCPhysWrite, "/PGM/RC/Phys/Write", "The number of times PGMPhysWrite was called.");
1782	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysWriteBytes, "/PGM/RC/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1783	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleRead, "/PGM/RC/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1784	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleReadBytes, "/PGM/RC/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1785	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleWrite, "/PGM/RC/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1786	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleWriteBytes, "/PGM/RC/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1787
1788	PGM_REG_COUNTER(&pStats->StatTrackVirgin, "/PGM/Track/Virgin", "The number of first time shadowings");
1789	PGM_REG_COUNTER(&pStats->StatTrackAliased, "/PGM/Track/Aliased", "The number of times switching to cRef2, i.e. the page is being shadowed by two PTs.");
1790	PGM_REG_COUNTER(&pStats->StatTrackAliasedMany, "/PGM/Track/AliasedMany", "The number of times we're tracking using cRef2.");
1791	PGM_REG_COUNTER(&pStats->StatTrackAliasedLots, "/PGM/Track/AliasedLots", "The number of times we're hitting pages which has overflowed cRef2");
1792	PGM_REG_COUNTER(&pStats->StatTrackOverflows, "/PGM/Track/Overflows", "The number of times the extent list grows too long.");
1793	PGM_REG_COUNTER(&pStats->StatTrackNoExtentsLeft, "/PGM/Track/NoExtentLeft", "The number of times the extent list was exhausted.");
1794	PGM_REG_PROFILE(&pStats->StatTrackDeref, "/PGM/Track/Deref", "Profiling of SyncPageWorkerTrackDeref (expensive).");
1795
1796	# undef PGM_REG_COUNTER
1797	# undef PGM_REG_PROFILE
1798	#endif
1799
1800	/*
1801	* Note! The layout below matches the member layout exactly!
1802	*/
1803
1804	/*
1805	* Common - stats
1806	*/
1807	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1808	{
1809	PPGMCPU pPgmCpu = &pVM->aCpus[idCpu].pgm.s;
1810
1811	#define PGM_REG_COUNTER(a, b, c) \
1812	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b, idCpu); \
1813	AssertRC(rc);
1814	#define PGM_REG_PROFILE(a, b, c) \
1815	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b, idCpu); \
1816	AssertRC(rc);
1817
1818	PGM_REG_COUNTER(&pPgmCpu->cGuestModeChanges, "/PGM/CPU%u/cGuestModeChanges", "Number of guest mode changes.");
1819
1820	#ifdef VBOX_WITH_STATISTICS
1821	PGMCPUSTATS *pCpuStats = pVM->aCpus[idCpu].pgm.s.pStatsR3;
1822
1823	# if 0 /* rarely useful; leave for debugging. */
1824	for (unsigned j = 0; j < RT_ELEMENTS(pPgmCpu->StatSyncPtPD); j++)
1825	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1826	"The number of SyncPT per PD n.", "/PGM/CPU%u/PDSyncPT/%04X", i, j);
1827	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatSyncPagePD); j++)
1828	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1829	"The number of SyncPage per PD n.", "/PGM/CPU%u/PDSyncPage/%04X", i, j);
1830	# endif
1831	/* R0 only: */
1832	PGM_REG_PROFILE(&pCpuStats->StatR0NpMiscfg, "/PGM/CPU%u/R0/NpMiscfg", "PGMR0Trap0eHandlerNPMisconfig() profiling.");
1833	PGM_REG_COUNTER(&pCpuStats->StatR0NpMiscfgSyncPage, "/PGM/CPU%u/R0/NpMiscfgSyncPage", "SyncPage calls from PGMR0Trap0eHandlerNPMisconfig().");
1834
1835	/* RZ only: */
1836	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0e, "/PGM/CPU%u/RZ/Trap0e", "Profiling of the PGMTrap0eHandler() body.");
1837	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Ballooned, "/PGM/CPU%u/RZ/Trap0e/Time2/Ballooned", "Profiling of the Trap0eHandler body when the cause is read access to a ballooned page.");
1838	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2CSAM, "/PGM/CPU%u/RZ/Trap0e/Time2/CSAM", "Profiling of the Trap0eHandler body when the cause is CSAM.");
1839	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2DirtyAndAccessed, "/PGM/CPU%u/RZ/Trap0e/Time2/DirtyAndAccessedBits", "Profiling of the Trap0eHandler body when the cause is dirty and/or accessed bit emulation.");
1840	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2GuestTrap, "/PGM/CPU%u/RZ/Trap0e/Time2/GuestTrap", "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1841	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerPhysical", "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1842	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndVirt, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerVirtual", "Profiling of the Trap0eHandler body when the cause is a virtual handler.");
1843	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndUnhandled, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerUnhandled", "Profiling of the Trap0eHandler body when the cause is access outside the monitored areas of a monitored page.");
1844	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2InvalidPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/InvalidPhys", "Profiling of the Trap0eHandler body when the cause is access to an invalid physical guest address.");
1845	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2MakeWritable, "/PGM/CPU%u/RZ/Trap0e/Time2/MakeWritable", "Profiling of the Trap0eHandler body when the cause is that a page needed to be made writeable.");
1846	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Mapping, "/PGM/CPU%u/RZ/Trap0e/Time2/Mapping", "Profiling of the Trap0eHandler body when the cause is related to the guest mappings.");
1847	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Misc, "/PGM/CPU%u/RZ/Trap0e/Time2/Misc", "Profiling of the Trap0eHandler body when the cause is not known.");
1848	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSync, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSync", "Profiling of the Trap0eHandler body when the cause is an out-of-sync page.");
1849	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncHndPhys", "Profiling of the Trap0eHandler body when the cause is an out-of-sync physical handler page.");
1850	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndVirt, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncHndVirt", "Profiling of the Trap0eHandler body when the cause is an out-of-sync virtual handler page.");
1851	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndObs, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncObsHnd", "Profiling of the Trap0eHandler body when the cause is an obsolete handler page.");
1852	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2SyncPT, "/PGM/CPU%u/RZ/Trap0e/Time2/SyncPT", "Profiling of the Trap0eHandler body when the cause is lazy syncing of a PT.");
1853	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2WPEmulation, "/PGM/CPU%u/RZ/Trap0e/Time2/WPEmulation", "Profiling of the Trap0eHandler body when the cause is CR0.WP emulation.");
1854	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eConflicts, "/PGM/CPU%u/RZ/Trap0e/Conflicts", "The number of times #PF was caused by an undetected conflict.");
1855	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersMapping, "/PGM/CPU%u/RZ/Trap0e/Handlers/Mapping", "Number of traps due to access handlers in mappings.");
1856	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersOutOfSync, "/PGM/CPU%u/RZ/Trap0e/Handlers/OutOfSync", "Number of traps due to out-of-sync handled pages.");
1857	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAll, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAll", "Number of traps due to physical all-access handlers.");
1858	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAllOpt, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAllOpt", "Number of the physical all-access handler traps using the optimization.");
1859	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysWrite, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysWrite", "Number of traps due to physical write-access handlers.");
1860	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtual, "/PGM/CPU%u/RZ/Trap0e/Handlers/Virtual", "Number of traps due to virtual access handlers.");
1861	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtualByPhys, "/PGM/CPU%u/RZ/Trap0e/Handlers/VirtualByPhys", "Number of traps due to virtual access handlers by physical address.");
1862	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtualUnmarked,"/PGM/CPU%u/RZ/Trap0e/Handlers/VirtualUnmarked","Number of traps due to virtual access handlers by virtual address (without proper physical flags).");
1863	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersUnhandled, "/PGM/CPU%u/RZ/Trap0e/Handlers/Unhandled", "Number of traps due to access outside range of monitored page(s).");
1864	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersInvalid, "/PGM/CPU%u/RZ/Trap0e/Handlers/Invalid", "Number of traps due to access to invalid physical memory.");
1865	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPRead", "Number of user mode not present read page faults.");
1866	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPWrite", "Number of user mode not present write page faults.");
1867	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/Write", "Number of user mode write page faults.");
1868	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSReserved, "/PGM/CPU%u/RZ/Trap0e/Err/User/Reserved", "Number of user mode reserved bit page faults.");
1869	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/User/NXE", "Number of user mode NXE page faults.");
1870	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/Read", "Number of user mode read page faults.");
1871	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPRead", "Number of supervisor mode not present read page faults.");
1872	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPWrite", "Number of supervisor mode not present write page faults.");
1873	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Write", "Number of supervisor mode write page faults.");
1874	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVReserved, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Reserved", "Number of supervisor mode reserved bit page faults.");
1875	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NXE", "Number of supervisor mode NXE page faults.");
1876	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPF, "/PGM/CPU%u/RZ/Trap0e/GuestPF", "Number of real guest page faults.");
1877	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPFMapping, "/PGM/CPU%u/RZ/Trap0e/GuestPF/InMapping", "Number of real guest page faults in a mapping.");
1878	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulInRZ, "/PGM/CPU%u/RZ/Trap0e/WP/InRZ", "Number of guest page faults due to X86_CR0_WP emulation.");
1879	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulToR3, "/PGM/CPU%u/RZ/Trap0e/WP/ToR3", "Number of guest page faults due to X86_CR0_WP emulation (forward to R3 for emulation).");
1880	#if 0 /* rarely useful; leave for debugging. */
1881	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatRZTrap0ePD); j++)
1882	STAMR3RegisterF(pVM, &pCpuStats->StatRZTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1883	"The number of traps in page directory n.", "/PGM/CPU%u/RZ/Trap0e/PD/%04X", i, j);
1884	#endif
1885	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteHandled, "/PGM/CPU%u/RZ/CR3WriteHandled", "The number of times the Guest CR3 change was successfully handled.");
1886	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteUnhandled, "/PGM/CPU%u/RZ/CR3WriteUnhandled", "The number of times the Guest CR3 change was passed back to the recompiler.");
1887	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteConflict, "/PGM/CPU%u/RZ/CR3WriteConflict", "The number of times the Guest CR3 monitoring detected a conflict.");
1888	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteHandled, "/PGM/CPU%u/RZ/ROMWriteHandled", "The number of times the Guest ROM change was successfully handled.");
1889	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteUnhandled, "/PGM/CPU%u/RZ/ROMWriteUnhandled", "The number of times the Guest ROM change was passed back to the recompiler.");
1890
1891	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapMigrateInvlPg, "/PGM/CPU%u/RZ/DynMap/MigrateInvlPg", "invlpg count in PGMR0DynMapMigrateAutoSet.");
1892	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapGCPageInl, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl", "Calls to pgmR0DynMapGCPageInlined.");
1893	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Hits", "Hash table lookup hits.");
1894	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Misses", "Misses that falls back to the code common.");
1895	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamHits", "1st ram range hits.");
1896	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamMisses", "1st ram range misses, takes slow path.");
1897	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPageInl, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl", "Calls to pgmRZDynMapHCPageInlined.");
1898	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Hits", "Hash table lookup hits.");
1899	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Misses", "Misses that falls back to the code common.");
1900	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPage, "/PGM/CPU%u/RZ/DynMap/Page", "Calls to pgmR0DynMapPage");
1901	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetOptimize, "/PGM/CPU%u/RZ/DynMap/Page/SetOptimize", "Calls to pgmRZDynMapOptimizeAutoSet.");
1902	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchFlushes, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchFlushes", "Set search restoring to subset flushes.");
1903	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchHits, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchHits", "Set search hits.");
1904	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchMisses, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchMisses", "Set search misses.");
1905	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPage, "/PGM/CPU%u/RZ/DynMap/Page/HCPage", "Calls to pgmRZDynMapHCPageCommon (ring-0).");
1906	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits0, "/PGM/CPU%u/RZ/DynMap/Page/Hits0", "Hits at iPage+0");
1907	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits1, "/PGM/CPU%u/RZ/DynMap/Page/Hits1", "Hits at iPage+1");
1908	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits2, "/PGM/CPU%u/RZ/DynMap/Page/Hits2", "Hits at iPage+2");
1909	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageInvlPg, "/PGM/CPU%u/RZ/DynMap/Page/InvlPg", "invlpg count in pgmR0DynMapPageSlow.");
1910	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlow, "/PGM/CPU%u/RZ/DynMap/Page/Slow", "Calls to pgmR0DynMapPageSlow - subtract this from pgmR0DynMapPage to get 1st level hits.");
1911	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopHits, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopHits" , "Hits in the loop path.");
1912	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopMisses, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopMisses", "Misses in the loop path. NonLoopMisses = Slow - SlowLoopHit - SlowLoopMisses");
1913	//PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLostHits, "/PGM/CPU%u/R0/DynMap/Page/SlowLostHits", "Lost hits.");
1914	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSubsets, "/PGM/CPU%u/RZ/DynMap/Subsets", "Times PGMRZDynMapPushAutoSubset was called.");
1915	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPopFlushes, "/PGM/CPU%u/RZ/DynMap/SubsetPopFlushes", "Times PGMRZDynMapPopAutoSubset flushes the subset.");
1916	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[0], "/PGM/CPU%u/RZ/DynMap/SetFilledPct000..09", "00-09% filled (RC: min(set-size, dynmap-size))");
1917	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[1], "/PGM/CPU%u/RZ/DynMap/SetFilledPct010..19", "10-19% filled (RC: min(set-size, dynmap-size))");
1918	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[2], "/PGM/CPU%u/RZ/DynMap/SetFilledPct020..29", "20-29% filled (RC: min(set-size, dynmap-size))");
1919	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[3], "/PGM/CPU%u/RZ/DynMap/SetFilledPct030..39", "30-39% filled (RC: min(set-size, dynmap-size))");
1920	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[4], "/PGM/CPU%u/RZ/DynMap/SetFilledPct040..49", "40-49% filled (RC: min(set-size, dynmap-size))");
1921	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[5], "/PGM/CPU%u/RZ/DynMap/SetFilledPct050..59", "50-59% filled (RC: min(set-size, dynmap-size))");
1922	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[6], "/PGM/CPU%u/RZ/DynMap/SetFilledPct060..69", "60-69% filled (RC: min(set-size, dynmap-size))");
1923	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[7], "/PGM/CPU%u/RZ/DynMap/SetFilledPct070..79", "70-79% filled (RC: min(set-size, dynmap-size))");
1924	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[8], "/PGM/CPU%u/RZ/DynMap/SetFilledPct080..89", "80-89% filled (RC: min(set-size, dynmap-size))");
1925	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[9], "/PGM/CPU%u/RZ/DynMap/SetFilledPct090..99", "90-99% filled (RC: min(set-size, dynmap-size))");
1926	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[10], "/PGM/CPU%u/RZ/DynMap/SetFilledPct100", "100% filled (RC: min(set-size, dynmap-size))");
1927
1928	/* HC only: */
1929
1930	/* RZ & R3: */
1931	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3, "/PGM/CPU%u/RZ/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1932	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3Handlers, "/PGM/CPU%u/RZ/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1933	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3Global, "/PGM/CPU%u/RZ/SyncCR3/Global", "The number of global CR3 syncs.");
1934	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3NotGlobal, "/PGM/CPU%u/RZ/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1935	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstCacheHit, "/PGM/CPU%u/RZ/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1936	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreed, "/PGM/CPU%u/RZ/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1937	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreedSrcNP, "/PGM/CPU%u/RZ/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
1938	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstNotPresent, "/PGM/CPU%u/RZ/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
1939	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1940	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPT, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
1941	PGM_REG_PROFILE(&pCpuStats->StatRZSyncPT, "/PGM/CPU%u/RZ/SyncPT", "Profiling of the pfnSyncPT() body.");
1942	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPTFailed, "/PGM/CPU%u/RZ/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1943	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4K, "/PGM/CPU%u/RZ/SyncPT/4K", "Nr of 4K PT syncs");
1944	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4M, "/PGM/CPU%u/RZ/SyncPT/4M", "Nr of 4M PT syncs");
1945	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDNAs, "/PGM/CPU%u/RZ/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1946	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDOutOfSync, "/PGM/CPU%u/RZ/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1947	PGM_REG_COUNTER(&pCpuStats->StatRZAccessedPage, "/PGM/CPU%u/RZ/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1948	PGM_REG_PROFILE(&pCpuStats->StatRZDirtyBitTracking, "/PGM/CPU%u/RZ/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1949	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPage, "/PGM/CPU%u/RZ/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1950	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageBig, "/PGM/CPU%u/RZ/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1951	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageSkipped, "/PGM/CPU%u/RZ/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1952	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageTrap, "/PGM/CPU%u/RZ/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1953	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageStale, "/PGM/CPU%u/RZ/DirtyPage/Stale", "The number of traps generated for dirty bit tracking (stale tlb entries).");
1954	PGM_REG_COUNTER(&pCpuStats->StatRZDirtiedPage, "/PGM/CPU%u/RZ/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1955	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyTrackRealPF, "/PGM/CPU%u/RZ/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1956	PGM_REG_COUNTER(&pCpuStats->StatRZPageAlreadyDirty, "/PGM/CPU%u/RZ/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1957	PGM_REG_PROFILE(&pCpuStats->StatRZInvalidatePage, "/PGM/CPU%u/RZ/InvalidatePage", "PGMInvalidatePage() profiling.");
1958	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4KBPages, "/PGM/CPU%u/RZ/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1959	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPages, "/PGM/CPU%u/RZ/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1960	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPagesSkip, "/PGM/CPU%u/RZ/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1961	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDMappings, "/PGM/CPU%u/RZ/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
1962	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNAs, "/PGM/CPU%u/RZ/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
1963	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNPs, "/PGM/CPU%u/RZ/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
1964	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDOutOfSync, "/PGM/CPU%u/RZ/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
1965	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePageSkipped, "/PGM/CPU%u/RZ/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
1966	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncSupervisor, "/PGM/CPU%u/RZ/OutOfSync/SuperVisor", "Number of traps due to pages out of sync (P) and times VerifyAccessSyncPage calls SyncPage.");
1967	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncUser, "/PGM/CPU%u/RZ/OutOfSync/User", "Number of traps due to pages out of sync (P) and times VerifyAccessSyncPage calls SyncPage.");
1968	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncSupervisorWrite,"/PGM/CPU%u/RZ/OutOfSync/SuperVisorWrite", "Number of traps due to pages out of sync (RW) and times VerifyAccessSyncPage calls SyncPage.");
1969	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncUserWrite, "/PGM/CPU%u/RZ/OutOfSync/UserWrite", "Number of traps due to pages out of sync (RW) and times VerifyAccessSyncPage calls SyncPage.");
1970	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncBallloon, "/PGM/CPU%u/RZ/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
1971	PGM_REG_PROFILE(&pCpuStats->StatRZPrefetch, "/PGM/CPU%u/RZ/Prefetch", "PGMPrefetchPage profiling.");
1972	PGM_REG_PROFILE(&pCpuStats->StatRZFlushTLB, "/PGM/CPU%u/RZ/FlushTLB", "Profiling of the PGMFlushTLB() body.");
1973	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3, "/PGM/CPU%u/RZ/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
1974	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3Global, "/PGM/CPU%u/RZ/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1975	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3, "/PGM/CPU%u/RZ/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
1976	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3Global, "/PGM/CPU%u/RZ/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1977	PGM_REG_PROFILE(&pCpuStats->StatRZGstModifyPage, "/PGM/CPU%u/RZ/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
1978
1979	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3, "/PGM/CPU%u/R3/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1980	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3Handlers, "/PGM/CPU%u/R3/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1981	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3Global, "/PGM/CPU%u/R3/SyncCR3/Global", "The number of global CR3 syncs.");
1982	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3NotGlobal, "/PGM/CPU%u/R3/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1983	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstCacheHit, "/PGM/CPU%u/R3/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1984	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreed, "/PGM/CPU%u/R3/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1985	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreedSrcNP, "/PGM/CPU%u/R3/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
1986	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstNotPresent, "/PGM/CPU%u/R3/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
1987	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1988	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPT, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
1989	PGM_REG_PROFILE(&pCpuStats->StatR3SyncPT, "/PGM/CPU%u/R3/SyncPT", "Profiling of the pfnSyncPT() body.");
1990	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPTFailed, "/PGM/CPU%u/R3/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1991	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4K, "/PGM/CPU%u/R3/SyncPT/4K", "Nr of 4K PT syncs");
1992	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4M, "/PGM/CPU%u/R3/SyncPT/4M", "Nr of 4M PT syncs");
1993	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDNAs, "/PGM/CPU%u/R3/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1994	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDOutOfSync, "/PGM/CPU%u/R3/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1995	PGM_REG_COUNTER(&pCpuStats->StatR3AccessedPage, "/PGM/CPU%u/R3/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1996	PGM_REG_PROFILE(&pCpuStats->StatR3DirtyBitTracking, "/PGM/CPU%u/R3/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1997	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPage, "/PGM/CPU%u/R3/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1998	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageBig, "/PGM/CPU%u/R3/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1999	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageSkipped, "/PGM/CPU%u/R3/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
2000	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageTrap, "/PGM/CPU%u/R3/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
2001	PGM_REG_COUNTER(&pCpuStats->StatR3DirtiedPage, "/PGM/CPU%u/R3/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
2002	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyTrackRealPF, "/PGM/CPU%u/R3/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
2003	PGM_REG_COUNTER(&pCpuStats->StatR3PageAlreadyDirty, "/PGM/CPU%u/R3/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
2004	PGM_REG_PROFILE(&pCpuStats->StatR3InvalidatePage, "/PGM/CPU%u/R3/InvalidatePage", "PGMInvalidatePage() profiling.");
2005	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4KBPages, "/PGM/CPU%u/R3/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
2006	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPages, "/PGM/CPU%u/R3/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
2007	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPagesSkip, "/PGM/CPU%u/R3/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
2008	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDMappings, "/PGM/CPU%u/R3/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
2009	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNAs, "/PGM/CPU%u/R3/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
2010	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNPs, "/PGM/CPU%u/R3/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
2011	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDOutOfSync, "/PGM/CPU%u/R3/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
2012	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePageSkipped, "/PGM/CPU%u/R3/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
2013	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncSupervisor, "/PGM/CPU%u/R3/OutOfSync/SuperVisor", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
2014	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncUser, "/PGM/CPU%u/R3/OutOfSync/User", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
2015	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncBallloon, "/PGM/CPU%u/R3/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
2016	PGM_REG_PROFILE(&pCpuStats->StatR3Prefetch, "/PGM/CPU%u/R3/Prefetch", "PGMPrefetchPage profiling.");
2017	PGM_REG_PROFILE(&pCpuStats->StatR3FlushTLB, "/PGM/CPU%u/R3/FlushTLB", "Profiling of the PGMFlushTLB() body.");
2018	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3, "/PGM/CPU%u/R3/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
2019	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3Global, "/PGM/CPU%u/R3/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
2020	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3, "/PGM/CPU%u/R3/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
2021	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3Global, "/PGM/CPU%u/R3/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
2022	PGM_REG_PROFILE(&pCpuStats->StatR3GstModifyPage, "/PGM/CPU%u/R3/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
2023	#endif /* VBOX_WITH_STATISTICS */
2024
2025	#undef PGM_REG_PROFILE
2026	#undef PGM_REG_COUNTER
2027
2028	}
2029
2030	return VINF_SUCCESS;
2031	}
2032
2033
2034	/**
2035	* Init the PGM bits that rely on VMMR0 and MM to be fully initialized.
2036	*
2037	* The dynamic mapping area will also be allocated and initialized at this
2038	* time. We could allocate it during PGMR3Init of course, but the mapping
2039	* wouldn't be allocated at that time preventing us from setting up the
2040	* page table entries with the dummy page.
2041	*
2042	* @returns VBox status code.
2043	* @param pVM VM handle.
2044	*/
2045	VMMR3DECL(int) PGMR3InitDynMap(PVM pVM)
2046	{
2047	RTGCPTR GCPtr;
2048	int rc;
2049
2050	/*
2051	* Reserve space for the dynamic mappings.
2052	*/
2053	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping", &GCPtr);
2054	if (RT_SUCCESS(rc))
2055	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2056
2057	if ( RT_SUCCESS(rc)
2058	&& (pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) != ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT))
2059	{
2060	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping not crossing", &GCPtr);
2061	if (RT_SUCCESS(rc))
2062	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2063	}
2064	if (RT_SUCCESS(rc))
2065	{
2066	AssertRelease((pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) == ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT));
2067	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
2068	}
2069	return rc;
2070	}
2071
2072
2073	/**
2074	* Ring-3 init finalizing.
2075	*
2076	* @returns VBox status code.
2077	* @param pVM The VM handle.
2078	*/
2079	VMMR3DECL(int) PGMR3InitFinalize(PVM pVM)
2080	{
2081	int rc;
2082
2083	/*
2084	* Reserve space for the dynamic mappings.
2085	* Initialize the dynamic mapping pages with dummy pages to simply the cache.
2086	*/
2087	/* get the pointer to the page table entries. */
2088	PPGMMAPPING pMapping = pgmGetMapping(pVM, pVM->pgm.s.pbDynPageMapBaseGC);
2089	AssertRelease(pMapping);
2090	const uintptr_t off = pVM->pgm.s.pbDynPageMapBaseGC - pMapping->GCPtr;
2091	const unsigned iPT = off >> X86_PD_SHIFT;
2092	const unsigned iPG = (off >> X86_PT_SHIFT) & X86_PT_MASK;
2093	pVM->pgm.s.paDynPageMap32BitPTEsGC = pMapping->aPTs[iPT].pPTRC + iPG * sizeof(pMapping->aPTs[0].pPTR3->a[0]);
2094	pVM->pgm.s.paDynPageMapPaePTEsGC = pMapping->aPTs[iPT].paPaePTsRC + iPG * sizeof(pMapping->aPTs[0].paPaePTsR3->a[0]);
2095
2096	/* init cache area */
2097	RTHCPHYS HCPhysDummy = MMR3PageDummyHCPhys(pVM);
2098	for (uint32_t offDynMap = 0; offDynMap < MM_HYPER_DYNAMIC_SIZE; offDynMap += PAGE_SIZE)
2099	{
2100	rc = PGMMap(pVM, pVM->pgm.s.pbDynPageMapBaseGC + offDynMap, HCPhysDummy, PAGE_SIZE, 0);
2101	AssertRCReturn(rc, rc);
2102	}
2103
2104	/*
2105	* Determine the max physical address width (MAXPHYADDR) and apply it to
2106	* all the mask members and stuff.
2107	*/
2108	uint32_t cMaxPhysAddrWidth;
2109	uint32_t uMaxExtLeaf = ASMCpuId_EAX(0x80000000);
2110	if ( uMaxExtLeaf >= 0x80000008
2111	&& uMaxExtLeaf <= 0x80000fff)
2112	{
2113	cMaxPhysAddrWidth = ASMCpuId_EAX(0x80000008) & 0xff;
2114	LogRel(("PGM: The CPU physical address width is %u bits\n", cMaxPhysAddrWidth));
2115	cMaxPhysAddrWidth = RT_MIN(52, cMaxPhysAddrWidth);
2116	pVM->pgm.s.fLessThan52PhysicalAddressBits = cMaxPhysAddrWidth < 52;
2117	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 52; iBit++)
2118	pVM->pgm.s.HCPhysInvMmioPg \|= RT_BIT_64(iBit);
2119	}
2120	else
2121	{
2122	LogRel(("PGM: ASSUMING CPU physical address width of 48 bits (uMaxExtLeaf=%#x)\n", uMaxExtLeaf));
2123	cMaxPhysAddrWidth = 48;
2124	pVM->pgm.s.fLessThan52PhysicalAddressBits = true;
2125	pVM->pgm.s.HCPhysInvMmioPg \|= UINT64_C(0x000f0000000000);
2126	}
2127
2128	pVM->pgm.s.GCPhysInvAddrMask = 0;
2129	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 64; iBit++)
2130	pVM->pgm.s.GCPhysInvAddrMask \|= RT_BIT_64(iBit);
2131
2132	/*
2133	* Initialize the invalid paging entry masks, assuming NX is disabled.
2134	*/
2135	uint64_t fMbzPageFrameMask = pVM->pgm.s.GCPhysInvAddrMask & UINT64_C(0x000ffffffffff000);
2136	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2137	{
2138	PVMCPU pVCpu = &pVM->aCpus[iCpu];
2139
2140	/** @todo The manuals are not entirely clear whether the physical
2141	* address width is relevant. See table 5-9 in the intel
2142	* manual vs the PDE4M descriptions. Write testcase (NP). */
2143	pVCpu->pgm.s.fGst32BitMbzBigPdeMask = ((uint32_t)(fMbzPageFrameMask >> (32 - 13)) & X86_PDE4M_PG_HIGH_MASK)
2144	\| X86_PDE4M_MBZ_MASK;
2145
2146	pVCpu->pgm.s.fGstPaeMbzPteMask = fMbzPageFrameMask \| X86_PTE_PAE_MBZ_MASK_NO_NX;
2147	pVCpu->pgm.s.fGstPaeMbzPdeMask = fMbzPageFrameMask \| X86_PDE_PAE_MBZ_MASK_NO_NX;
2148	pVCpu->pgm.s.fGstPaeMbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_PAE_MBZ_MASK_NO_NX;
2149	pVCpu->pgm.s.fGstPaeMbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_PAE_MBZ_MASK;
2150
2151	pVCpu->pgm.s.fGstAmd64MbzPteMask = fMbzPageFrameMask \| X86_PTE_LM_MBZ_MASK_NO_NX;
2152	pVCpu->pgm.s.fGstAmd64MbzPdeMask = fMbzPageFrameMask \| X86_PDE_LM_MBZ_MASK_NX;
2153	pVCpu->pgm.s.fGstAmd64MbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_LM_MBZ_MASK_NX;
2154	pVCpu->pgm.s.fGstAmd64MbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_LM_MBZ_MASK_NO_NX;
2155	pVCpu->pgm.s.fGstAmd64MbzBigPdpeMask = fMbzPageFrameMask \| X86_PDPE1G_LM_MBZ_MASK_NO_NX;
2156	pVCpu->pgm.s.fGstAmd64MbzPml4eMask = fMbzPageFrameMask \| X86_PML4E_MBZ_MASK_NO_NX;
2157
2158	pVCpu->pgm.s.fGst64ShadowedPteMask = X86_PTE_P \| X86_PTE_RW \| X86_PTE_US \| X86_PTE_G \| X86_PTE_A \| X86_PTE_D;
2159	pVCpu->pgm.s.fGst64ShadowedPdeMask = X86_PDE_P \| X86_PDE_RW \| X86_PDE_US \| X86_PDE_A;
2160	pVCpu->pgm.s.fGst64ShadowedBigPdeMask = X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_A;
2161	pVCpu->pgm.s.fGst64ShadowedBigPde4PteMask =
2162	X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_G \| X86_PDE4M_A \| X86_PDE4M_D;
2163	pVCpu->pgm.s.fGstAmd64ShadowedPdpeMask = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A;
2164	pVCpu->pgm.s.fGstAmd64ShadowedPml4eMask = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A;
2165	}
2166
2167	/*
2168	* Note that AMD uses all the 8 reserved bits for the address (so 40 bits in total);
2169	* Intel only goes up to 36 bits, so we stick to 36 as well.
2170	* Update: More recent intel manuals specifies 40 bits just like AMD.
2171	*/
2172	uint32_t u32Dummy, u32Features;
2173	CPUMGetGuestCpuId(VMMGetCpu(pVM), 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
2174	if (u32Features & X86_CPUID_FEATURE_EDX_PSE36)
2175	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(RT_MAX(36, cMaxPhysAddrWidth)) - 1;
2176	else
2177	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1;
2178
2179	/*
2180	* Allocate memory if we're supposed to do that.
2181	*/
2182	if (pVM->pgm.s.fRamPreAlloc)
2183	rc = pgmR3PhysRamPreAllocate(pVM);
2184
2185	LogRel(("PGMR3InitFinalize: 4 MB PSE mask %RGp\n", pVM->pgm.s.GCPhys4MBPSEMask));
2186	return rc;
2187	}
2188
2189
2190	/**
2191	* Init phase completed callback.
2192	*
2193	* @returns VBox status code.
2194	* @param pVM The VM handle.
2195	* @param enmWhat What has been completed.
2196	* @thread EMT(0)
2197	*/
2198	VMMR3_INT_DECL(int) PGMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
2199	{
2200	switch (enmWhat)
2201	{
2202	case VMINITCOMPLETED_HWACCM:
2203	#ifdef VBOX_WITH_PCI_PASSTHROUGH
2204	if (pVM->pgm.s.fPciPassthrough)
2205	{
2206	AssertLogRelReturn(pVM->pgm.s.fRamPreAlloc, VERR_PCI_PASSTHROUGH_NO_RAM_PREALLOC);
2207	AssertLogRelReturn(HWACCMIsEnabled(pVM), VERR_PCI_PASSTHROUGH_NO_HWACCM);
2208	AssertLogRelReturn(HWACCMIsNestedPagingActive(pVM), VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING);
2209
2210	/*
2211	* Report assignments to the IOMMU (hope that's good enough for now).
2212	*/
2213	if (pVM->pgm.s.fPciPassthrough)
2214	{
2215	int rc = VMMR3CallR0(pVM, VMMR0_DO_PGM_PHYS_SETUP_IOMMU, 0, NULL);
2216	AssertRCReturn(rc, rc);
2217	}
2218	}
2219	#else
2220	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough, VERR_PGM_PCI_PASSTHRU_MISCONFIG);
2221	#endif
2222	break;
2223
2224	default:
2225	/* shut up gcc */
2226	break;
2227	}
2228
2229	return VINF_SUCCESS;
2230	}
2231
2232
2233	/**
2234	* Applies relocations to data and code managed by this component.
2235	*
2236	* This function will be called at init and whenever the VMM need to relocate it
2237	* self inside the GC.
2238	*
2239	* @param pVM The VM.
2240	* @param offDelta Relocation delta relative to old location.
2241	*/
2242	VMMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
2243	{
2244	LogFlow(("PGMR3Relocate %RGv to %RGv\n", pVM->pgm.s.GCPtrCR3Mapping, pVM->pgm.s.GCPtrCR3Mapping + offDelta));
2245
2246	/*
2247	* Paging stuff.
2248	*/
2249	pVM->pgm.s.GCPtrCR3Mapping += offDelta;
2250
2251	pgmR3ModeDataInit(pVM, true /* resolve GC/R0 symbols */);
2252
2253	/* Shadow, guest and both mode switch & relocation for each VCPU. */
2254	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2255	{
2256	PVMCPU pVCpu = &pVM->aCpus[i];
2257
2258	pgmR3ModeDataSwitch(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
2259
2260	PGM_SHW_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2261	PGM_GST_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2262	PGM_BTH_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2263	}
2264
2265	/*
2266	* Trees.
2267	*/
2268	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
2269
2270	/*
2271	* Ram ranges.
2272	*/
2273	if (pVM->pgm.s.pRamRangesXR3)
2274	{
2275	/* Update the pSelfRC pointers and relink them. */
2276	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2277	if (!(pCur->fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2278	pCur->pSelfRC = MMHyperCCToRC(pVM, pCur);
2279	pgmR3PhysRelinkRamRanges(pVM);
2280
2281	/* Flush the RC TLB. */
2282	for (unsigned i = 0; i < PGM_RAMRANGE_TLB_ENTRIES; i++)
2283	pVM->pgm.s.apRamRangesTlbRC[i] = NIL_RTRCPTR;
2284	}
2285
2286	/*
2287	* Update the pSelfRC pointer of the MMIO2 ram ranges since they might not
2288	* be mapped and thus not included in the above exercise.
2289	*/
2290	for (PPGMMMIO2RANGE pCur = pVM->pgm.s.pMmio2RangesR3; pCur; pCur = pCur->pNextR3)
2291	if (!(pCur->RamRange.fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2292	pCur->RamRange.pSelfRC = MMHyperCCToRC(pVM, &pCur->RamRange);
2293
2294	/*
2295	* Update the two page directories with all page table mappings.
2296	* (One or more of them have changed, that's why we're here.)
2297	*/
2298	pVM->pgm.s.pMappingsRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pMappingsR3);
2299	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur->pNextR3; pCur = pCur->pNextR3)
2300	pCur->pNextRC = MMHyperR3ToRC(pVM, pCur->pNextR3);
2301
2302	/* Relocate GC addresses of Page Tables. */
2303	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
2304	{
2305	for (RTHCUINT i = 0; i < pCur->cPTs; i++)
2306	{
2307	pCur->aPTs[i].pPTRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].pPTR3);
2308	pCur->aPTs[i].paPaePTsRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].paPaePTsR3);
2309	}
2310	}
2311
2312	/*
2313	* Dynamic page mapping area.
2314	*/
2315	pVM->pgm.s.paDynPageMap32BitPTEsGC += offDelta;
2316	pVM->pgm.s.paDynPageMapPaePTEsGC += offDelta;
2317	pVM->pgm.s.pbDynPageMapBaseGC += offDelta;
2318
2319	if (pVM->pgm.s.pRCDynMap)
2320	{
2321	pVM->pgm.s.pRCDynMap += offDelta;
2322	PPGMRCDYNMAP pDynMap = (PPGMRCDYNMAP)MMHyperRCToCC(pVM, pVM->pgm.s.pRCDynMap);
2323
2324	pDynMap->paPages += offDelta;
2325	PPGMRCDYNMAPENTRY paPages = (PPGMRCDYNMAPENTRY)MMHyperRCToCC(pVM, pDynMap->paPages);
2326
2327	for (uint32_t iPage = 0; iPage < pDynMap->cPages; iPage++)
2328	{
2329	paPages[iPage].pvPage += offDelta;
2330	paPages[iPage].uPte.pLegacy += offDelta;
2331	paPages[iPage].uPte.pPae += offDelta;
2332	}
2333	}
2334
2335	/*
2336	* The Zero page.
2337	*/
2338	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
2339	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
2340	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR \|\| !VMMIsHwVirtExtForced(pVM));
2341	#else
2342	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR);
2343	#endif
2344
2345	/*
2346	* Physical and virtual handlers.
2347	*/
2348	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3RelocatePhysHandler, &offDelta);
2349	pVM->pgm.s.pLastPhysHandlerRC = NIL_RTRCPTR;
2350	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3RelocateVirtHandler, &offDelta);
2351	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3RelocateHyperVirtHandler, &offDelta);
2352
2353	/*
2354	* The page pool.
2355	*/
2356	pgmR3PoolRelocate(pVM);
2357
2358	#ifdef VBOX_WITH_STATISTICS
2359	/*
2360	* Statistics.
2361	*/
2362	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->pgm.s.pStatsR3);
2363	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2364	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->aCpus[iCpu].pgm.s.pStatsR3);
2365	#endif
2366	}
2367
2368
2369	/**
2370	* Callback function for relocating a physical access handler.
2371	*
2372	* @returns 0 (continue enum)
2373	* @param pNode Pointer to a PGMPHYSHANDLER node.
2374	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2375	* not certain the delta will fit in a void pointer for all possible configs.
2376	*/
2377	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser)
2378	{
2379	PPGMPHYSHANDLER pHandler = (PPGMPHYSHANDLER)pNode;
2380	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2381	if (pHandler->pfnHandlerRC)
2382	pHandler->pfnHandlerRC += offDelta;
2383	if (pHandler->pvUserRC >= 0x10000)
2384	pHandler->pvUserRC += offDelta;
2385	return 0;
2386	}
2387
2388
2389	/**
2390	* Callback function for relocating a virtual access handler.
2391	*
2392	* @returns 0 (continue enum)
2393	* @param pNode Pointer to a PGMVIRTHANDLER node.
2394	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2395	* not certain the delta will fit in a void pointer for all possible configs.
2396	*/
2397	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2398	{
2399	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2400	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2401	Assert( pHandler->enmType == PGMVIRTHANDLERTYPE_ALL
2402	\|\| pHandler->enmType == PGMVIRTHANDLERTYPE_WRITE);
2403	Assert(pHandler->pfnHandlerRC);
2404	pHandler->pfnHandlerRC += offDelta;
2405	return 0;
2406	}
2407
2408
2409	/**
2410	* Callback function for relocating a virtual access handler for the hypervisor mapping.
2411	*
2412	* @returns 0 (continue enum)
2413	* @param pNode Pointer to a PGMVIRTHANDLER node.
2414	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2415	* not certain the delta will fit in a void pointer for all possible configs.
2416	*/
2417	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2418	{
2419	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2420	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2421	Assert(pHandler->enmType == PGMVIRTHANDLERTYPE_HYPERVISOR);
2422	Assert(pHandler->pfnHandlerRC);
2423	pHandler->pfnHandlerRC += offDelta;
2424	return 0;
2425	}
2426
2427
2428	/**
2429	* Resets a virtual CPU when unplugged.
2430	*
2431	* @param pVM The VM handle.
2432	* @param pVCpu The virtual CPU handle.
2433	*/
2434	VMMR3DECL(void) PGMR3ResetUnpluggedCpu(PVM pVM, PVMCPU pVCpu)
2435	{
2436	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2437	AssertRC(rc);
2438
2439	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2440	AssertRC(rc);
2441
2442	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2443
2444	pgmR3PoolResetUnpluggedCpu(pVM, pVCpu);
2445
2446	/*
2447	* Re-init other members.
2448	*/
2449	pVCpu->pgm.s.fA20Enabled = true;
2450
2451	/*
2452	* Clear the FFs PGM owns.
2453	*/
2454	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2455	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2456	}
2457
2458
2459	/**
2460	* The VM is being reset.
2461	*
2462	* For the PGM component this means that any PD write monitors
2463	* needs to be removed.
2464	*
2465	* @param pVM VM handle.
2466	*/
2467	VMMR3DECL(void) PGMR3Reset(PVM pVM)
2468	{
2469	int rc;
2470
2471	LogFlow(("PGMR3Reset:\n"));
2472	VM_ASSERT_EMT(pVM);
2473
2474	pgmLock(pVM);
2475
2476	/*
2477	* Unfix any fixed mappings and disable CR3 monitoring.
2478	*/
2479	pVM->pgm.s.fMappingsFixed = false;
2480	pVM->pgm.s.fMappingsFixedRestored = false;
2481	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
2482	pVM->pgm.s.cbMappingFixed = 0;
2483
2484	/*
2485	* Exit the guest paging mode before the pgm pool gets reset.
2486	* Important to clean up the amd64 case.
2487	*/
2488	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2489	{
2490	PVMCPU pVCpu = &pVM->aCpus[i];
2491	rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2492	AssertRC(rc);
2493	}
2494
2495	#ifdef DEBUG
2496	DBGFR3InfoLog(pVM, "mappings", NULL);
2497	DBGFR3InfoLog(pVM, "handlers", "all nostat");
2498	#endif
2499
2500	/*
2501	* Switch mode back to real mode. (before resetting the pgm pool!)
2502	*/
2503	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2504	{
2505	PVMCPU pVCpu = &pVM->aCpus[i];
2506
2507	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2508	AssertRC(rc);
2509
2510	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2511	}
2512
2513	/*
2514	* Reset the shadow page pool.
2515	*/
2516	pgmR3PoolReset(pVM);
2517
2518	/*
2519	* Re-init various other members and clear the FFs that PGM owns.
2520	*/
2521	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2522	{
2523	PVMCPU pVCpu = &pVM->aCpus[i];
2524
2525	pVCpu->pgm.s.fA20Enabled = true;
2526	pVCpu->pgm.s.fGst32BitPageSizeExtension = false;
2527	PGMNotifyNxeChanged(pVCpu, false);
2528
2529	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2530	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2531	}
2532
2533	/*
2534	* Reset (zero) RAM and shadow ROM pages.
2535	*/
2536	rc = pgmR3PhysRamReset(pVM);
2537	if (RT_SUCCESS(rc))
2538	rc = pgmR3PhysRomReset(pVM);
2539
2540
2541	pgmUnlock(pVM);
2542	AssertReleaseRC(rc);
2543	}
2544
2545
2546	#ifdef VBOX_STRICT
2547	/**
2548	* VM state change callback for clearing fNoMorePhysWrites after
2549	* a snapshot has been created.
2550	*/
2551	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
2552	{
2553	if ( enmState == VMSTATE_RUNNING
2554	\|\| enmState == VMSTATE_RESUMING)
2555	pVM->pgm.s.fNoMorePhysWrites = false;
2556	NOREF(enmOldState); NOREF(pvUser);
2557	}
2558	#endif
2559
2560	/**
2561	* Private API to reset fNoMorePhysWrites.
2562	*/
2563	VMMR3DECL(void) PGMR3ResetNoMorePhysWritesFlag(PVM pVM)
2564	{
2565	pVM->pgm.s.fNoMorePhysWrites = false;
2566	}
2567
2568	/**
2569	* Terminates the PGM.
2570	*
2571	* @returns VBox status code.
2572	* @param pVM Pointer to VM structure.
2573	*/
2574	VMMR3DECL(int) PGMR3Term(PVM pVM)
2575	{
2576	/* Must free shared pages here. */
2577	pgmLock(pVM);
2578	pgmR3PhysRamTerm(pVM);
2579	pgmR3PhysRomTerm(pVM);
2580	pgmUnlock(pVM);
2581
2582	PGMDeregisterStringFormatTypes();
2583	return PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
2584	}
2585
2586
2587	/**
2588	* Show paging mode.
2589	*
2590	* @param pVM VM Handle.
2591	* @param pHlp The info helpers.
2592	* @param pszArgs "all" (default), "guest", "shadow" or "host".
2593	*/
2594	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2595	{
2596	/* digest argument. */
2597	bool fGuest, fShadow, fHost;
2598	if (pszArgs)
2599	pszArgs = RTStrStripL(pszArgs);
2600	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
2601	fShadow = fHost = fGuest = true;
2602	else
2603	{
2604	fShadow = fHost = fGuest = false;
2605	if (strstr(pszArgs, "guest"))
2606	fGuest = true;
2607	if (strstr(pszArgs, "shadow"))
2608	fShadow = true;
2609	if (strstr(pszArgs, "host"))
2610	fHost = true;
2611	}
2612
2613	/** @todo SMP support! */
2614	/* print info. */
2615	if (fGuest)
2616	pHlp->pfnPrintf(pHlp, "Guest paging mode: %s, changed %RU64 times, A20 %s\n",
2617	PGMGetModeName(pVM->aCpus[0].pgm.s.enmGuestMode), pVM->aCpus[0].pgm.s.cGuestModeChanges.c,
2618	pVM->aCpus[0].pgm.s.fA20Enabled ? "enabled" : "disabled");
2619	if (fShadow)
2620	pHlp->pfnPrintf(pHlp, "Shadow paging mode: %s\n", PGMGetModeName(pVM->aCpus[0].pgm.s.enmShadowMode));
2621	if (fHost)
2622	{
2623	const char *psz;
2624	switch (pVM->pgm.s.enmHostMode)
2625	{
2626	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
2627	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
2628	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
2629	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
2630	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
2631	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
2632	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
2633	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
2634	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
2635	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
2636	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
2637	default: psz = "unknown"; break;
2638	}
2639	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
2640	}
2641	}
2642
2643
2644	/**
2645	* Dump registered MMIO ranges to the log.
2646	*
2647	* @param pVM VM Handle.
2648	* @param pHlp The info helpers.
2649	* @param pszArgs Arguments, ignored.
2650	*/
2651	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2652	{
2653	NOREF(pszArgs);
2654	pHlp->pfnPrintf(pHlp,
2655	"RAM ranges (pVM=%p)\n"
2656	"%.s %.s\n",
2657	pVM,
2658	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
2659	sizeof(RTHCPTR) * 2, "pvHC ");
2660
2661	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2662	pHlp->pfnPrintf(pHlp,
2663	"%RGp-%RGp %RHv %s\n",
2664	pCur->GCPhys,
2665	pCur->GCPhysLast,
2666	pCur->pvR3,
2667	pCur->pszDesc);
2668	}
2669
2670	/**
2671	* Dump the page directory to the log.
2672	*
2673	* @param pVM VM Handle.
2674	* @param pHlp The info helpers.
2675	* @param pszArgs Arguments, ignored.
2676	*/
2677	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2678	{
2679	/** @todo SMP support!! */
2680	PVMCPU pVCpu = &pVM->aCpus[0];
2681
2682	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
2683	/* Big pages supported? */
2684	const bool fPSE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PSE);
2685
2686	/* Global pages supported? */
2687	const bool fPGE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE);
2688
2689	NOREF(pszArgs);
2690
2691	/*
2692	* Get page directory addresses.
2693	*/
2694	pgmLock(pVM);
2695	PX86PD pPDSrc = pgmGstGet32bitPDPtr(pVCpu);
2696	Assert(pPDSrc);
2697
2698	/*
2699	* Iterate the page directory.
2700	*/
2701	for (unsigned iPD = 0; iPD < RT_ELEMENTS(pPDSrc->a); iPD++)
2702	{
2703	X86PDE PdeSrc = pPDSrc->a[iPD];
2704	if (PdeSrc.n.u1Present)
2705	{
2706	if (PdeSrc.b.u1Size && fPSE)
2707	pHlp->pfnPrintf(pHlp,
2708	"%04X - %RGp P=%d U=%d RW=%d G=%d - BIG\n",
2709	iPD,
2710	pgmGstGet4MBPhysPage(pVM, PdeSrc),
2711	PdeSrc.b.u1Present, PdeSrc.b.u1User, PdeSrc.b.u1Write, PdeSrc.b.u1Global && fPGE);
2712	else
2713	pHlp->pfnPrintf(pHlp,
2714	"%04X - %RGp P=%d U=%d RW=%d [G=%d]\n",
2715	iPD,
2716	(RTGCPHYS)(PdeSrc.u & X86_PDE_PG_MASK),
2717	PdeSrc.n.u1Present, PdeSrc.n.u1User, PdeSrc.n.u1Write, PdeSrc.b.u1Global && fPGE);
2718	}
2719	}
2720	pgmUnlock(pVM);
2721	}
2722
2723
2724	/**
2725	* Service a VMMCALLRING3_PGM_LOCK call.
2726	*
2727	* @returns VBox status code.
2728	* @param pVM The VM handle.
2729	*/
2730	VMMR3DECL(int) PGMR3LockCall(PVM pVM)
2731	{
2732	int rc = PDMR3CritSectEnterEx(&pVM->pgm.s.CritSectX, true /* fHostCall */);
2733	AssertRC(rc);
2734	return rc;
2735	}
2736
2737
2738	/**
2739	* Converts a PGMMODE value to a PGM_TYPE_* \#define.
2740	*
2741	* @returns PGM_TYPE_*.
2742	* @param pgmMode The mode value to convert.
2743	*/
2744	DECLINLINE(unsigned) pgmModeToType(PGMMODE pgmMode)
2745	{
2746	switch (pgmMode)
2747	{
2748	case PGMMODE_REAL: return PGM_TYPE_REAL;
2749	case PGMMODE_PROTECTED: return PGM_TYPE_PROT;
2750	case PGMMODE_32_BIT: return PGM_TYPE_32BIT;
2751	case PGMMODE_PAE:
2752	case PGMMODE_PAE_NX: return PGM_TYPE_PAE;
2753	case PGMMODE_AMD64:
2754	case PGMMODE_AMD64_NX: return PGM_TYPE_AMD64;
2755	case PGMMODE_NESTED: return PGM_TYPE_NESTED;
2756	case PGMMODE_EPT: return PGM_TYPE_EPT;
2757	default:
2758	AssertFatalMsgFailed(("pgmMode=%d\n", pgmMode));
2759	}
2760	}
2761
2762
2763	/**
2764	* Gets the index into the paging mode data array of a SHW+GST mode.
2765	*
2766	* @returns PGM::paPagingData index.
2767	* @param uShwType The shadow paging mode type.
2768	* @param uGstType The guest paging mode type.
2769	*/
2770	DECLINLINE(unsigned) pgmModeDataIndex(unsigned uShwType, unsigned uGstType)
2771	{
2772	Assert(uShwType >= PGM_TYPE_32BIT && uShwType <= PGM_TYPE_MAX);
2773	Assert(uGstType >= PGM_TYPE_REAL && uGstType <= PGM_TYPE_AMD64);
2774	return (uShwType - PGM_TYPE_32BIT) * (PGM_TYPE_AMD64 - PGM_TYPE_REAL + 1)
2775	+ (uGstType - PGM_TYPE_REAL);
2776	}
2777
2778
2779	/**
2780	* Gets the index into the paging mode data array of a SHW+GST mode.
2781	*
2782	* @returns PGM::paPagingData index.
2783	* @param enmShw The shadow paging mode.
2784	* @param enmGst The guest paging mode.
2785	*/
2786	DECLINLINE(unsigned) pgmModeDataIndexByMode(PGMMODE enmShw, PGMMODE enmGst)
2787	{
2788	Assert(enmShw >= PGMMODE_32_BIT && enmShw <= PGMMODE_MAX);
2789	Assert(enmGst > PGMMODE_INVALID && enmGst < PGMMODE_MAX);
2790	return pgmModeDataIndex(pgmModeToType(enmShw), pgmModeToType(enmGst));
2791	}
2792
2793
2794	/**
2795	* Calculates the max data index.
2796	* @returns The number of entries in the paging data array.
2797	*/
2798	DECLINLINE(unsigned) pgmModeDataMaxIndex(void)
2799	{
2800	return pgmModeDataIndex(PGM_TYPE_MAX, PGM_TYPE_AMD64) + 1;
2801	}
2802
2803
2804	/**
2805	* Initializes the paging mode data kept in PGM::paModeData.
2806	*
2807	* @param pVM The VM handle.
2808	* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
2809	* This is used early in the init process to avoid trouble with PDM
2810	* not being initialized yet.
2811	*/
2812	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0)
2813	{
2814	PPGMMODEDATA pModeData;
2815	int rc;
2816
2817	/*
2818	* Allocate the array on the first call.
2819	*/
2820	if (!pVM->pgm.s.paModeData)
2821	{
2822	pVM->pgm.s.paModeData = (PPGMMODEDATA)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMMODEDATA) * pgmModeDataMaxIndex());
2823	AssertReturn(pVM->pgm.s.paModeData, VERR_NO_MEMORY);
2824	}
2825
2826	/*
2827	* Initialize the array entries.
2828	*/
2829	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_REAL)];
2830	pModeData->uShwType = PGM_TYPE_32BIT;
2831	pModeData->uGstType = PGM_TYPE_REAL;
2832	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2833	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2834	rc = PGM_BTH_NAME_32BIT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2835
2836	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGMMODE_PROTECTED)];
2837	pModeData->uShwType = PGM_TYPE_32BIT;
2838	pModeData->uGstType = PGM_TYPE_PROT;
2839	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2840	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2841	rc = PGM_BTH_NAME_32BIT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2842
2843	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_32BIT)];
2844	pModeData->uShwType = PGM_TYPE_32BIT;
2845	pModeData->uGstType = PGM_TYPE_32BIT;
2846	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2847	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2848	rc = PGM_BTH_NAME_32BIT_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2849
2850	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_REAL)];
2851	pModeData->uShwType = PGM_TYPE_PAE;
2852	pModeData->uGstType = PGM_TYPE_REAL;
2853	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2854	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2855	rc = PGM_BTH_NAME_PAE_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2856
2857	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PROT)];
2858	pModeData->uShwType = PGM_TYPE_PAE;
2859	pModeData->uGstType = PGM_TYPE_PROT;
2860	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2861	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2862	rc = PGM_BTH_NAME_PAE_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2863
2864	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_32BIT)];
2865	pModeData->uShwType = PGM_TYPE_PAE;
2866	pModeData->uGstType = PGM_TYPE_32BIT;
2867	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2868	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2869	rc = PGM_BTH_NAME_PAE_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2870
2871	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PAE)];
2872	pModeData->uShwType = PGM_TYPE_PAE;
2873	pModeData->uGstType = PGM_TYPE_PAE;
2874	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2875	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2876	rc = PGM_BTH_NAME_PAE_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2877
2878	#ifdef VBOX_WITH_64_BITS_GUESTS
2879	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_AMD64, PGM_TYPE_AMD64)];
2880	pModeData->uShwType = PGM_TYPE_AMD64;
2881	pModeData->uGstType = PGM_TYPE_AMD64;
2882	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2883	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2884	rc = PGM_BTH_NAME_AMD64_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2885	#endif
2886
2887	/* The nested paging mode. */
2888	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_REAL)];
2889	pModeData->uShwType = PGM_TYPE_NESTED;
2890	pModeData->uGstType = PGM_TYPE_REAL;
2891	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2892	rc = PGM_BTH_NAME_NESTED_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2893
2894	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGMMODE_PROTECTED)];
2895	pModeData->uShwType = PGM_TYPE_NESTED;
2896	pModeData->uGstType = PGM_TYPE_PROT;
2897	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2898	rc = PGM_BTH_NAME_NESTED_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2899
2900	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_32BIT)];
2901	pModeData->uShwType = PGM_TYPE_NESTED;
2902	pModeData->uGstType = PGM_TYPE_32BIT;
2903	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2904	rc = PGM_BTH_NAME_NESTED_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2905
2906	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_PAE)];
2907	pModeData->uShwType = PGM_TYPE_NESTED;
2908	pModeData->uGstType = PGM_TYPE_PAE;
2909	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2910	rc = PGM_BTH_NAME_NESTED_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2911
2912	#ifdef VBOX_WITH_64_BITS_GUESTS
2913	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2914	pModeData->uShwType = PGM_TYPE_NESTED;
2915	pModeData->uGstType = PGM_TYPE_AMD64;
2916	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2917	rc = PGM_BTH_NAME_NESTED_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2918	#endif
2919
2920	/* The shadow part of the nested callback mode depends on the host paging mode (AMD-V only). */
2921	switch (pVM->pgm.s.enmHostMode)
2922	{
2923	#if HC_ARCH_BITS == 32
2924	case SUPPAGINGMODE_32_BIT:
2925	case SUPPAGINGMODE_32_BIT_GLOBAL:
2926	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
2927	{
2928	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2929	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2930	}
2931	# ifdef VBOX_WITH_64_BITS_GUESTS
2932	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2933	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2934	# endif
2935	break;
2936
2937	case SUPPAGINGMODE_PAE:
2938	case SUPPAGINGMODE_PAE_NX:
2939	case SUPPAGINGMODE_PAE_GLOBAL:
2940	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2941	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
2942	{
2943	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2944	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2945	}
2946	# ifdef VBOX_WITH_64_BITS_GUESTS
2947	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2948	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2949	# endif
2950	break;
2951	#endif /* HC_ARCH_BITS == 32 */
2952
2953	#if HC_ARCH_BITS == 64 \|\| defined(RT_OS_DARWIN)
2954	case SUPPAGINGMODE_AMD64:
2955	case SUPPAGINGMODE_AMD64_GLOBAL:
2956	case SUPPAGINGMODE_AMD64_NX:
2957	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2958	# ifdef VBOX_WITH_64_BITS_GUESTS
2959	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_AMD64; i++)
2960	# else
2961	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
2962	# endif
2963	{
2964	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2965	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2966	}
2967	break;
2968	#endif /* HC_ARCH_BITS == 64 \|\| RT_OS_DARWIN */
2969
2970	default:
2971	AssertFailed();
2972	break;
2973	}
2974
2975	/* Extended paging (EPT) / Intel VT-x */
2976	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_REAL)];
2977	pModeData->uShwType = PGM_TYPE_EPT;
2978	pModeData->uGstType = PGM_TYPE_REAL;
2979	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2980	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2981	rc = PGM_BTH_NAME_EPT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2982
2983	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PROT)];
2984	pModeData->uShwType = PGM_TYPE_EPT;
2985	pModeData->uGstType = PGM_TYPE_PROT;
2986	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2987	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2988	rc = PGM_BTH_NAME_EPT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2989
2990	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_32BIT)];
2991	pModeData->uShwType = PGM_TYPE_EPT;
2992	pModeData->uGstType = PGM_TYPE_32BIT;
2993	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2994	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2995	rc = PGM_BTH_NAME_EPT_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2996
2997	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PAE)];
2998	pModeData->uShwType = PGM_TYPE_EPT;
2999	pModeData->uGstType = PGM_TYPE_PAE;
3000	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3001	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3002	rc = PGM_BTH_NAME_EPT_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3003
3004	#ifdef VBOX_WITH_64_BITS_GUESTS
3005	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_AMD64)];
3006	pModeData->uShwType = PGM_TYPE_EPT;
3007	pModeData->uGstType = PGM_TYPE_AMD64;
3008	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3009	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3010	rc = PGM_BTH_NAME_EPT_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3011	#endif
3012	return VINF_SUCCESS;
3013	}
3014
3015
3016	/**
3017	* Switch to different (or relocated in the relocate case) mode data.
3018	*
3019	* @param pVM The VM handle.
3020	* @param pVCpu The VMCPU to operate on.
3021	* @param enmShw The the shadow paging mode.
3022	* @param enmGst The the guest paging mode.
3023	*/
3024	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst)
3025	{
3026	PPGMMODEDATA pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndexByMode(enmShw, enmGst)];
3027
3028	Assert(pModeData->uGstType == pgmModeToType(enmGst));
3029	Assert(pModeData->uShwType == pgmModeToType(enmShw));
3030
3031	/* shadow */
3032	pVCpu->pgm.s.pfnR3ShwRelocate = pModeData->pfnR3ShwRelocate;
3033	pVCpu->pgm.s.pfnR3ShwExit = pModeData->pfnR3ShwExit;
3034	pVCpu->pgm.s.pfnR3ShwGetPage = pModeData->pfnR3ShwGetPage;
3035	Assert(pVCpu->pgm.s.pfnR3ShwGetPage);
3036	pVCpu->pgm.s.pfnR3ShwModifyPage = pModeData->pfnR3ShwModifyPage;
3037
3038	pVCpu->pgm.s.pfnRCShwGetPage = pModeData->pfnRCShwGetPage;
3039	pVCpu->pgm.s.pfnRCShwModifyPage = pModeData->pfnRCShwModifyPage;
3040
3041	pVCpu->pgm.s.pfnR0ShwGetPage = pModeData->pfnR0ShwGetPage;
3042	pVCpu->pgm.s.pfnR0ShwModifyPage = pModeData->pfnR0ShwModifyPage;
3043
3044
3045	/* guest */
3046	pVCpu->pgm.s.pfnR3GstRelocate = pModeData->pfnR3GstRelocate;
3047	pVCpu->pgm.s.pfnR3GstExit = pModeData->pfnR3GstExit;
3048	pVCpu->pgm.s.pfnR3GstGetPage = pModeData->pfnR3GstGetPage;
3049	Assert(pVCpu->pgm.s.pfnR3GstGetPage);
3050	pVCpu->pgm.s.pfnR3GstModifyPage = pModeData->pfnR3GstModifyPage;
3051	pVCpu->pgm.s.pfnR3GstGetPDE = pModeData->pfnR3GstGetPDE;
3052	pVCpu->pgm.s.pfnRCGstGetPage = pModeData->pfnRCGstGetPage;
3053	pVCpu->pgm.s.pfnRCGstModifyPage = pModeData->pfnRCGstModifyPage;
3054	pVCpu->pgm.s.pfnRCGstGetPDE = pModeData->pfnRCGstGetPDE;
3055	pVCpu->pgm.s.pfnR0GstGetPage = pModeData->pfnR0GstGetPage;
3056	pVCpu->pgm.s.pfnR0GstModifyPage = pModeData->pfnR0GstModifyPage;
3057	pVCpu->pgm.s.pfnR0GstGetPDE = pModeData->pfnR0GstGetPDE;
3058
3059	/* both */
3060	pVCpu->pgm.s.pfnR3BthRelocate = pModeData->pfnR3BthRelocate;
3061	pVCpu->pgm.s.pfnR3BthInvalidatePage = pModeData->pfnR3BthInvalidatePage;
3062	pVCpu->pgm.s.pfnR3BthSyncCR3 = pModeData->pfnR3BthSyncCR3;
3063	Assert(pVCpu->pgm.s.pfnR3BthSyncCR3);
3064	pVCpu->pgm.s.pfnR3BthPrefetchPage = pModeData->pfnR3BthPrefetchPage;
3065	pVCpu->pgm.s.pfnR3BthVerifyAccessSyncPage = pModeData->pfnR3BthVerifyAccessSyncPage;
3066	#ifdef VBOX_STRICT
3067	pVCpu->pgm.s.pfnR3BthAssertCR3 = pModeData->pfnR3BthAssertCR3;
3068	#endif
3069	pVCpu->pgm.s.pfnR3BthMapCR3 = pModeData->pfnR3BthMapCR3;
3070	pVCpu->pgm.s.pfnR3BthUnmapCR3 = pModeData->pfnR3BthUnmapCR3;
3071
3072	pVCpu->pgm.s.pfnRCBthTrap0eHandler = pModeData->pfnRCBthTrap0eHandler;
3073	pVCpu->pgm.s.pfnRCBthInvalidatePage = pModeData->pfnRCBthInvalidatePage;
3074	pVCpu->pgm.s.pfnRCBthSyncCR3 = pModeData->pfnRCBthSyncCR3;
3075	pVCpu->pgm.s.pfnRCBthPrefetchPage = pModeData->pfnRCBthPrefetchPage;
3076	pVCpu->pgm.s.pfnRCBthVerifyAccessSyncPage = pModeData->pfnRCBthVerifyAccessSyncPage;
3077	#ifdef VBOX_STRICT
3078	pVCpu->pgm.s.pfnRCBthAssertCR3 = pModeData->pfnRCBthAssertCR3;
3079	#endif
3080	pVCpu->pgm.s.pfnRCBthMapCR3 = pModeData->pfnRCBthMapCR3;
3081	pVCpu->pgm.s.pfnRCBthUnmapCR3 = pModeData->pfnRCBthUnmapCR3;
3082
3083	pVCpu->pgm.s.pfnR0BthTrap0eHandler = pModeData->pfnR0BthTrap0eHandler;
3084	pVCpu->pgm.s.pfnR0BthInvalidatePage = pModeData->pfnR0BthInvalidatePage;
3085	pVCpu->pgm.s.pfnR0BthSyncCR3 = pModeData->pfnR0BthSyncCR3;
3086	pVCpu->pgm.s.pfnR0BthPrefetchPage = pModeData->pfnR0BthPrefetchPage;
3087	pVCpu->pgm.s.pfnR0BthVerifyAccessSyncPage = pModeData->pfnR0BthVerifyAccessSyncPage;
3088	#ifdef VBOX_STRICT
3089	pVCpu->pgm.s.pfnR0BthAssertCR3 = pModeData->pfnR0BthAssertCR3;
3090	#endif
3091	pVCpu->pgm.s.pfnR0BthMapCR3 = pModeData->pfnR0BthMapCR3;
3092	pVCpu->pgm.s.pfnR0BthUnmapCR3 = pModeData->pfnR0BthUnmapCR3;
3093	}
3094
3095
3096	/**
3097	* Calculates the shadow paging mode.
3098	*
3099	* @returns The shadow paging mode.
3100	* @param pVM VM handle.
3101	* @param enmGuestMode The guest mode.
3102	* @param enmHostMode The host mode.
3103	* @param enmShadowMode The current shadow mode.
3104	* @param penmSwitcher Where to store the switcher to use.
3105	* VMMSWITCHER_INVALID means no change.
3106	*/
3107	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher)
3108	{
3109	VMMSWITCHER enmSwitcher = VMMSWITCHER_INVALID;
3110	switch (enmGuestMode)
3111	{
3112	/*
3113	* When switching to real or protected mode we don't change
3114	* anything since it's likely that we'll switch back pretty soon.
3115	*
3116	* During pgmR3InitPaging we'll end up here with PGMMODE_INVALID
3117	* and is supposed to determine which shadow paging and switcher to
3118	* use during init.
3119	*/
3120	case PGMMODE_REAL:
3121	case PGMMODE_PROTECTED:
3122	if ( enmShadowMode != PGMMODE_INVALID
3123	&& !HWACCMIsEnabled(pVM) /* always switch in hwaccm mode! */)
3124	break; /* (no change) */
3125
3126	switch (enmHostMode)
3127	{
3128	case SUPPAGINGMODE_32_BIT:
3129	case SUPPAGINGMODE_32_BIT_GLOBAL:
3130	enmShadowMode = PGMMODE_32_BIT;
3131	enmSwitcher = VMMSWITCHER_32_TO_32;
3132	break;
3133
3134	case SUPPAGINGMODE_PAE:
3135	case SUPPAGINGMODE_PAE_NX:
3136	case SUPPAGINGMODE_PAE_GLOBAL:
3137	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3138	enmShadowMode = PGMMODE_PAE;
3139	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3140	#ifdef DEBUG_bird
3141	if (RTEnvExist("VBOX_32BIT"))
3142	{
3143	enmShadowMode = PGMMODE_32_BIT;
3144	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3145	}
3146	#endif
3147	break;
3148
3149	case SUPPAGINGMODE_AMD64:
3150	case SUPPAGINGMODE_AMD64_GLOBAL:
3151	case SUPPAGINGMODE_AMD64_NX:
3152	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3153	enmShadowMode = PGMMODE_PAE;
3154	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3155	#ifdef DEBUG_bird
3156	if (RTEnvExist("VBOX_32BIT"))
3157	{
3158	enmShadowMode = PGMMODE_32_BIT;
3159	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3160	}
3161	#endif
3162	break;
3163
3164	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3165	}
3166	break;
3167
3168	case PGMMODE_32_BIT:
3169	switch (enmHostMode)
3170	{
3171	case SUPPAGINGMODE_32_BIT:
3172	case SUPPAGINGMODE_32_BIT_GLOBAL:
3173	enmShadowMode = PGMMODE_32_BIT;
3174	enmSwitcher = VMMSWITCHER_32_TO_32;
3175	break;
3176
3177	case SUPPAGINGMODE_PAE:
3178	case SUPPAGINGMODE_PAE_NX:
3179	case SUPPAGINGMODE_PAE_GLOBAL:
3180	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3181	enmShadowMode = PGMMODE_PAE;
3182	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3183	#ifdef DEBUG_bird
3184	if (RTEnvExist("VBOX_32BIT"))
3185	{
3186	enmShadowMode = PGMMODE_32_BIT;
3187	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3188	}
3189	#endif
3190	break;
3191
3192	case SUPPAGINGMODE_AMD64:
3193	case SUPPAGINGMODE_AMD64_GLOBAL:
3194	case SUPPAGINGMODE_AMD64_NX:
3195	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3196	enmShadowMode = PGMMODE_PAE;
3197	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3198	#ifdef DEBUG_bird
3199	if (RTEnvExist("VBOX_32BIT"))
3200	{
3201	enmShadowMode = PGMMODE_32_BIT;
3202	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3203	}
3204	#endif
3205	break;
3206
3207	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3208	}
3209	break;
3210
3211	case PGMMODE_PAE:
3212	case PGMMODE_PAE_NX: /** @todo This might require more switchers and guest+both modes. */
3213	switch (enmHostMode)
3214	{
3215	case SUPPAGINGMODE_32_BIT:
3216	case SUPPAGINGMODE_32_BIT_GLOBAL:
3217	enmShadowMode = PGMMODE_PAE;
3218	enmSwitcher = VMMSWITCHER_32_TO_PAE;
3219	break;
3220
3221	case SUPPAGINGMODE_PAE:
3222	case SUPPAGINGMODE_PAE_NX:
3223	case SUPPAGINGMODE_PAE_GLOBAL:
3224	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3225	enmShadowMode = PGMMODE_PAE;
3226	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3227	break;
3228
3229	case SUPPAGINGMODE_AMD64:
3230	case SUPPAGINGMODE_AMD64_GLOBAL:
3231	case SUPPAGINGMODE_AMD64_NX:
3232	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3233	enmShadowMode = PGMMODE_PAE;
3234	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3235	break;
3236
3237	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3238	}
3239	break;
3240
3241	case PGMMODE_AMD64:
3242	case PGMMODE_AMD64_NX:
3243	switch (enmHostMode)
3244	{
3245	case SUPPAGINGMODE_32_BIT:
3246	case SUPPAGINGMODE_32_BIT_GLOBAL:
3247	enmShadowMode = PGMMODE_AMD64;
3248	enmSwitcher = VMMSWITCHER_32_TO_AMD64;
3249	break;
3250
3251	case SUPPAGINGMODE_PAE:
3252	case SUPPAGINGMODE_PAE_NX:
3253	case SUPPAGINGMODE_PAE_GLOBAL:
3254	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3255	enmShadowMode = PGMMODE_AMD64;
3256	enmSwitcher = VMMSWITCHER_PAE_TO_AMD64;
3257	break;
3258
3259	case SUPPAGINGMODE_AMD64:
3260	case SUPPAGINGMODE_AMD64_GLOBAL:
3261	case SUPPAGINGMODE_AMD64_NX:
3262	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3263	enmShadowMode = PGMMODE_AMD64;
3264	enmSwitcher = VMMSWITCHER_AMD64_TO_AMD64;
3265	break;
3266
3267	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3268	}
3269	break;
3270
3271
3272	default:
3273	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3274	*penmSwitcher = VMMSWITCHER_INVALID;
3275	return PGMMODE_INVALID;
3276	}
3277	/* Override the shadow mode is nested paging is active. */
3278	pVM->pgm.s.fNestedPaging = HWACCMIsNestedPagingActive(pVM);
3279	if (pVM->pgm.s.fNestedPaging)
3280	enmShadowMode = HWACCMGetShwPagingMode(pVM);
3281
3282	*penmSwitcher = enmSwitcher;
3283	return enmShadowMode;
3284	}
3285
3286
3287	/**
3288	* Performs the actual mode change.
3289	* This is called by PGMChangeMode and pgmR3InitPaging().
3290	*
3291	* @returns VBox status code. May suspend or power off the VM on error, but this
3292	* will trigger using FFs and not status codes.
3293	*
3294	* @param pVM VM handle.
3295	* @param pVCpu The VMCPU to operate on.
3296	* @param enmGuestMode The new guest mode. This is assumed to be different from
3297	* the current mode.
3298	*/
3299	VMMR3DECL(int) PGMR3ChangeMode(PVM pVM, PVMCPU pVCpu, PGMMODE enmGuestMode)
3300	{
3301	#if HC_ARCH_BITS == 32
3302	bool fIsOldGuestPagingMode64Bits = (pVCpu->pgm.s.enmGuestMode >= PGMMODE_AMD64);
3303	#endif
3304	bool fIsNewGuestPagingMode64Bits = (enmGuestMode >= PGMMODE_AMD64);
3305
3306	Log(("PGMR3ChangeMode: Guest mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmGuestMode), PGMGetModeName(enmGuestMode)));
3307	STAM_REL_COUNTER_INC(&pVCpu->pgm.s.cGuestModeChanges);
3308
3309	/*
3310	* Calc the shadow mode and switcher.
3311	*/
3312	VMMSWITCHER enmSwitcher;
3313	PGMMODE enmShadowMode;
3314	enmShadowMode = pgmR3CalcShadowMode(pVM, enmGuestMode, pVM->pgm.s.enmHostMode, pVCpu->pgm.s.enmShadowMode, &enmSwitcher);
3315
3316	#ifdef VBOX_WITH_RAW_MODE
3317	if (enmSwitcher != VMMSWITCHER_INVALID)
3318	{
3319	/*
3320	* Select new switcher.
3321	*/
3322	int rc = VMMR3SelectSwitcher(pVM, enmSwitcher);
3323	if (RT_FAILURE(rc))
3324	{
3325	AssertReleaseMsgFailed(("VMMR3SelectSwitcher(%d) -> %Rrc\n", enmSwitcher, rc));
3326	return rc;
3327	}
3328	}
3329	#endif
3330
3331	/*
3332	* Exit old mode(s).
3333	*/
3334	#if HC_ARCH_BITS == 32
3335	/* The nested shadow paging mode for AMD-V does change when running 64 bits guests on 32 bits hosts; typically PAE <-> AMD64 */
3336	const bool fForceShwEnterExit = ( fIsOldGuestPagingMode64Bits != fIsNewGuestPagingMode64Bits
3337	&& enmShadowMode == PGMMODE_NESTED);
3338	#else
3339	const bool fForceShwEnterExit = false;
3340	#endif
3341	/* shadow */
3342	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3343	\|\| fForceShwEnterExit)
3344	{
3345	LogFlow(("PGMR3ChangeMode: Shadow mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode), PGMGetModeName(enmShadowMode)));
3346	if (PGM_SHW_PFN(Exit, pVCpu))
3347	{
3348	int rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3349	if (RT_FAILURE(rc))
3350	{
3351	AssertMsgFailed(("Exit failed for shadow mode %d: %Rrc\n", pVCpu->pgm.s.enmShadowMode, rc));
3352	return rc;
3353	}
3354	}
3355
3356	}
3357	else
3358	LogFlow(("PGMR3ChangeMode: Shadow mode remains: %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3359
3360	/* guest */
3361	if (PGM_GST_PFN(Exit, pVCpu))
3362	{
3363	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
3364	if (RT_FAILURE(rc))
3365	{
3366	AssertMsgFailed(("Exit failed for guest mode %d: %Rrc\n", pVCpu->pgm.s.enmGuestMode, rc));
3367	return rc;
3368	}
3369	}
3370
3371	/*
3372	* Load new paging mode data.
3373	*/
3374	pgmR3ModeDataSwitch(pVM, pVCpu, enmShadowMode, enmGuestMode);
3375
3376	/*
3377	* Enter new shadow mode (if changed).
3378	*/
3379	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3380	\|\| fForceShwEnterExit)
3381	{
3382	int rc;
3383	pVCpu->pgm.s.enmShadowMode = enmShadowMode;
3384	switch (enmShadowMode)
3385	{
3386	case PGMMODE_32_BIT:
3387	rc = PGM_SHW_NAME_32BIT(Enter)(pVCpu, false);
3388	break;
3389	case PGMMODE_PAE:
3390	case PGMMODE_PAE_NX:
3391	rc = PGM_SHW_NAME_PAE(Enter)(pVCpu, false);
3392	break;
3393	case PGMMODE_AMD64:
3394	case PGMMODE_AMD64_NX:
3395	rc = PGM_SHW_NAME_AMD64(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3396	break;
3397	case PGMMODE_NESTED:
3398	rc = PGM_SHW_NAME_NESTED(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3399	break;
3400	case PGMMODE_EPT:
3401	rc = PGM_SHW_NAME_EPT(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3402	break;
3403	case PGMMODE_REAL:
3404	case PGMMODE_PROTECTED:
3405	default:
3406	AssertReleaseMsgFailed(("enmShadowMode=%d\n", enmShadowMode));
3407	return VERR_INTERNAL_ERROR;
3408	}
3409	if (RT_FAILURE(rc))
3410	{
3411	AssertReleaseMsgFailed(("Entering enmShadowMode=%d failed: %Rrc\n", enmShadowMode, rc));
3412	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3413	return rc;
3414	}
3415	}
3416
3417	/*
3418	* Always flag the necessary updates
3419	*/
3420	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3421
3422	/*
3423	* Enter the new guest and shadow+guest modes.
3424	*/
3425	int rc = -1;
3426	int rc2 = -1;
3427	RTGCPHYS GCPhysCR3 = NIL_RTGCPHYS;
3428	pVCpu->pgm.s.enmGuestMode = enmGuestMode;
3429	switch (enmGuestMode)
3430	{
3431	case PGMMODE_REAL:
3432	rc = PGM_GST_NAME_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3433	switch (pVCpu->pgm.s.enmShadowMode)
3434	{
3435	case PGMMODE_32_BIT:
3436	rc2 = PGM_BTH_NAME_32BIT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3437	break;
3438	case PGMMODE_PAE:
3439	case PGMMODE_PAE_NX:
3440	rc2 = PGM_BTH_NAME_PAE_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3441	break;
3442	case PGMMODE_NESTED:
3443	rc2 = PGM_BTH_NAME_NESTED_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3444	break;
3445	case PGMMODE_EPT:
3446	rc2 = PGM_BTH_NAME_EPT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3447	break;
3448	case PGMMODE_AMD64:
3449	case PGMMODE_AMD64_NX:
3450	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3451	default: AssertFailed(); break;
3452	}
3453	break;
3454
3455	case PGMMODE_PROTECTED:
3456	rc = PGM_GST_NAME_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3457	switch (pVCpu->pgm.s.enmShadowMode)
3458	{
3459	case PGMMODE_32_BIT:
3460	rc2 = PGM_BTH_NAME_32BIT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3461	break;
3462	case PGMMODE_PAE:
3463	case PGMMODE_PAE_NX:
3464	rc2 = PGM_BTH_NAME_PAE_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3465	break;
3466	case PGMMODE_NESTED:
3467	rc2 = PGM_BTH_NAME_NESTED_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3468	break;
3469	case PGMMODE_EPT:
3470	rc2 = PGM_BTH_NAME_EPT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3471	break;
3472	case PGMMODE_AMD64:
3473	case PGMMODE_AMD64_NX:
3474	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3475	default: AssertFailed(); break;
3476	}
3477	break;
3478
3479	case PGMMODE_32_BIT:
3480	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAGE_MASK;
3481	rc = PGM_GST_NAME_32BIT(Enter)(pVCpu, GCPhysCR3);
3482	switch (pVCpu->pgm.s.enmShadowMode)
3483	{
3484	case PGMMODE_32_BIT:
3485	rc2 = PGM_BTH_NAME_32BIT_32BIT(Enter)(pVCpu, GCPhysCR3);
3486	break;
3487	case PGMMODE_PAE:
3488	case PGMMODE_PAE_NX:
3489	rc2 = PGM_BTH_NAME_PAE_32BIT(Enter)(pVCpu, GCPhysCR3);
3490	break;
3491	case PGMMODE_NESTED:
3492	rc2 = PGM_BTH_NAME_NESTED_32BIT(Enter)(pVCpu, GCPhysCR3);
3493	break;
3494	case PGMMODE_EPT:
3495	rc2 = PGM_BTH_NAME_EPT_32BIT(Enter)(pVCpu, GCPhysCR3);
3496	break;
3497	case PGMMODE_AMD64:
3498	case PGMMODE_AMD64_NX:
3499	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3500	default: AssertFailed(); break;
3501	}
3502	break;
3503
3504	case PGMMODE_PAE_NX:
3505	case PGMMODE_PAE:
3506	{
3507	uint32_t u32Dummy, u32Features;
3508
3509	CPUMGetGuestCpuId(pVCpu, 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
3510	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
3511	return VMSetRuntimeError(pVM, VMSETRTERR_FLAGS_FATAL, "PAEmode",
3512	N_("The guest is trying to switch to the PAE mode which is currently disabled by default in VirtualBox. PAE support can be enabled using the VM settings (General/Advanced)"));
3513
3514	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAE_PAGE_MASK;
3515	rc = PGM_GST_NAME_PAE(Enter)(pVCpu, GCPhysCR3);
3516	switch (pVCpu->pgm.s.enmShadowMode)
3517	{
3518	case PGMMODE_PAE:
3519	case PGMMODE_PAE_NX:
3520	rc2 = PGM_BTH_NAME_PAE_PAE(Enter)(pVCpu, GCPhysCR3);
3521	break;
3522	case PGMMODE_NESTED:
3523	rc2 = PGM_BTH_NAME_NESTED_PAE(Enter)(pVCpu, GCPhysCR3);
3524	break;
3525	case PGMMODE_EPT:
3526	rc2 = PGM_BTH_NAME_EPT_PAE(Enter)(pVCpu, GCPhysCR3);
3527	break;
3528	case PGMMODE_32_BIT:
3529	case PGMMODE_AMD64:
3530	case PGMMODE_AMD64_NX:
3531	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3532	default: AssertFailed(); break;
3533	}
3534	break;
3535	}
3536
3537	#ifdef VBOX_WITH_64_BITS_GUESTS
3538	case PGMMODE_AMD64_NX:
3539	case PGMMODE_AMD64:
3540	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & UINT64_C(0xfffffffffffff000); /** @todo define this mask! */
3541	rc = PGM_GST_NAME_AMD64(Enter)(pVCpu, GCPhysCR3);
3542	switch (pVCpu->pgm.s.enmShadowMode)
3543	{
3544	case PGMMODE_AMD64:
3545	case PGMMODE_AMD64_NX:
3546	rc2 = PGM_BTH_NAME_AMD64_AMD64(Enter)(pVCpu, GCPhysCR3);
3547	break;
3548	case PGMMODE_NESTED:
3549	rc2 = PGM_BTH_NAME_NESTED_AMD64(Enter)(pVCpu, GCPhysCR3);
3550	break;
3551	case PGMMODE_EPT:
3552	rc2 = PGM_BTH_NAME_EPT_AMD64(Enter)(pVCpu, GCPhysCR3);
3553	break;
3554	case PGMMODE_32_BIT:
3555	case PGMMODE_PAE:
3556	case PGMMODE_PAE_NX:
3557	AssertMsgFailed(("Should use AMD64 shadow mode!\n"));
3558	default: AssertFailed(); break;
3559	}
3560	break;
3561	#endif
3562
3563	default:
3564	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3565	rc = VERR_NOT_IMPLEMENTED;
3566	break;
3567	}
3568
3569	/* status codes. */
3570	AssertRC(rc);
3571	AssertRC(rc2);
3572	if (RT_SUCCESS(rc))
3573	{
3574	rc = rc2;
3575	if (RT_SUCCESS(rc)) /* no informational status codes. */
3576	rc = VINF_SUCCESS;
3577	}
3578
3579	/* Notify HWACCM as well. */
3580	HWACCMR3PagingModeChanged(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
3581	return rc;
3582	}
3583
3584
3585	/**
3586	* Called by pgmPoolFlushAllInt prior to flushing the pool.
3587	*
3588	* @returns VBox status code, fully asserted.
3589	* @param pVCpu The VMCPU to operate on.
3590	*/
3591	int pgmR3ExitShadowModeBeforePoolFlush(PVMCPU pVCpu)
3592	{
3593	/* Unmap the old CR3 value before flushing everything. */
3594	int rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
3595	AssertRC(rc);
3596
3597	/* Exit the current shadow paging mode as well; nested paging and EPT use a root CR3 which will get flushed here. */
3598	rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3599	AssertRC(rc);
3600	Assert(pVCpu->pgm.s.pShwPageCR3R3 == NULL);
3601	return rc;
3602	}
3603
3604
3605	/**
3606	* Called by pgmPoolFlushAllInt after flushing the pool.
3607	*
3608	* @returns VBox status code, fully asserted.
3609	* @param pVM The VM handle.
3610	* @param pVCpu The VMCPU to operate on.
3611	*/
3612	int pgmR3ReEnterShadowModeAfterPoolFlush(PVM pVM, PVMCPU pVCpu)
3613	{
3614	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3615	int rc = PGMR3ChangeMode(pVM, pVCpu, PGMGetGuestMode(pVCpu));
3616	Assert(VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
3617	AssertRCReturn(rc, rc);
3618	AssertRCSuccessReturn(rc, VERR_IPE_UNEXPECTED_INFO_STATUS);
3619
3620	Assert(pVCpu->pgm.s.pShwPageCR3R3 != NULL);
3621	AssertMsg( pVCpu->pgm.s.enmShadowMode >= PGMMODE_NESTED
3622	\|\| CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu),
3623	("%RHp != %RHp %s\n", (RTHCPHYS)CPUMGetHyperCR3(pVCpu), PGMGetHyperCR3(pVCpu), PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3624	return rc;
3625	}
3626
3627	#ifdef VBOX_WITH_DEBUGGER
3628
3629	/**
3630	* The '.pgmram' command.
3631	*
3632	* @returns VBox status.
3633	* @param pCmd Pointer to the command descriptor (as registered).
3634	* @param pCmdHlp Pointer to command helper functions.
3635	* @param pVM Pointer to the current VM (if any).
3636	* @param paArgs Pointer to (readonly) array of arguments.
3637	* @param cArgs Number of arguments in the array.
3638	*/
3639	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3640	{
3641	/*
3642	* Validate input.
3643	*/
3644	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3645	if (!pVM)
3646	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3647	if (!pVM->pgm.s.pRamRangesXR3)
3648	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no Ram is registered.\n");
3649
3650	/*
3651	* Dump the ranges.
3652	*/
3653	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "From - To (incl) pvHC\n");
3654	PPGMRAMRANGE pRam;
3655	for (pRam = pVM->pgm.s.pRamRangesXR3; pRam; pRam = pRam->pNextR3)
3656	{
3657	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
3658	"%RGp - %RGp %p\n",
3659	pRam->GCPhys, pRam->GCPhysLast, pRam->pvR3);
3660	if (RT_FAILURE(rc))
3661	return rc;
3662	}
3663
3664	return VINF_SUCCESS;
3665	}
3666
3667
3668	/**
3669	* The '.pgmerror' and '.pgmerroroff' commands.
3670	*
3671	* @returns VBox status.
3672	* @param pCmd Pointer to the command descriptor (as registered).
3673	* @param pCmdHlp Pointer to command helper functions.
3674	* @param pVM Pointer to the current VM (if any).
3675	* @param paArgs Pointer to (readonly) array of arguments.
3676	* @param cArgs Number of arguments in the array.
3677	*/
3678	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3679	{
3680	/*
3681	* Validate input.
3682	*/
3683	if (!pVM)
3684	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3685	AssertReturn(cArgs == 0 \|\| (cArgs == 1 && paArgs[0].enmType == DBGCVAR_TYPE_STRING),
3686	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: Hit bug in the parser.\n"));
3687
3688	if (!cArgs)
3689	{
3690	/*
3691	* Print the list of error injection locations with status.
3692	*/
3693	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "PGM error inject locations:\n");
3694	pCmdHlp->pfnPrintf(pCmdHlp, NULL, " handy - %RTbool\n", pVM->pgm.s.fErrInjHandyPages);
3695	}
3696	else
3697	{
3698
3699	/*
3700	* String switch on where to inject the error.
3701	*/
3702	bool const fNewState = !strcmp(pCmd->pszCmd, "pgmerror");
3703	const char *pszWhere = paArgs[0].u.pszString;
3704	if (!strcmp(pszWhere, "handy"))
3705	ASMAtomicWriteBool(&pVM->pgm.s.fErrInjHandyPages, fNewState);
3706	else
3707	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: Invalid 'where' value: %s.\n", pszWhere);
3708	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "done\n");
3709	}
3710	return VINF_SUCCESS;
3711	}
3712
3713
3714	/**
3715	* The '.pgmsync' command.
3716	*
3717	* @returns VBox status.
3718	* @param pCmd Pointer to the command descriptor (as registered).
3719	* @param pCmdHlp Pointer to command helper functions.
3720	* @param pVM Pointer to the current VM (if any).
3721	* @param paArgs Pointer to (readonly) array of arguments.
3722	* @param cArgs Number of arguments in the array.
3723	*/
3724	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3725	{
3726	/** @todo SMP support */
3727
3728	/*
3729	* Validate input.
3730	*/
3731	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3732	if (!pVM)
3733	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3734
3735	PVMCPU pVCpu = &pVM->aCpus[0];
3736
3737	/*
3738	* Force page directory sync.
3739	*/
3740	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3741
3742	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Forcing page directory sync.\n");
3743	if (RT_FAILURE(rc))
3744	return rc;
3745
3746	return VINF_SUCCESS;
3747	}
3748
3749
3750	#ifdef VBOX_STRICT
3751	/**
3752	* The '.pgmassertcr3' command.
3753	*
3754	* @returns VBox status.
3755	* @param pCmd Pointer to the command descriptor (as registered).
3756	* @param pCmdHlp Pointer to command helper functions.
3757	* @param pVM Pointer to the current VM (if any).
3758	* @param paArgs Pointer to (readonly) array of arguments.
3759	* @param cArgs Number of arguments in the array.
3760	*/
3761	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3762	{
3763	/** @todo SMP support!! */
3764
3765	/*
3766	* Validate input.
3767	*/
3768	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3769	if (!pVM)
3770	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3771
3772	PVMCPU pVCpu = &pVM->aCpus[0];
3773
3774	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Checking shadow CR3 page tables for consistency.\n");
3775	if (RT_FAILURE(rc))
3776	return rc;
3777
3778	PGMAssertCR3(pVM, pVCpu, CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu));
3779
3780	return VINF_SUCCESS;
3781	}
3782	#endif /* VBOX_STRICT */
3783
3784
3785	/**
3786	* The '.pgmsyncalways' command.
3787	*
3788	* @returns VBox status.
3789	* @param pCmd Pointer to the command descriptor (as registered).
3790	* @param pCmdHlp Pointer to command helper functions.
3791	* @param pVM Pointer to the current VM (if any).
3792	* @param paArgs Pointer to (readonly) array of arguments.
3793	* @param cArgs Number of arguments in the array.
3794	*/
3795	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3796	{
3797	/** @todo SMP support!! */
3798	PVMCPU pVCpu = &pVM->aCpus[0];
3799
3800	/*
3801	* Validate input.
3802	*/
3803	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3804	if (!pVM)
3805	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3806
3807	/*
3808	* Force page directory sync.
3809	*/
3810	if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
3811	{
3812	ASMAtomicAndU32(&pVCpu->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
3813	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Disabled permanent forced page directory syncing.\n");
3814	}
3815	else
3816	{
3817	ASMAtomicOrU32(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
3818	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3819	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Enabled permanent forced page directory syncing.\n");
3820	}
3821	}
3822
3823
3824	/**
3825	* The '.pgmphystofile' command.
3826	*
3827	* @returns VBox status.
3828	* @param pCmd Pointer to the command descriptor (as registered).
3829	* @param pCmdHlp Pointer to command helper functions.
3830	* @param pVM Pointer to the current VM (if any).
3831	* @param paArgs Pointer to (readonly) array of arguments.
3832	* @param cArgs Number of arguments in the array.
3833	*/
3834	static DECLCALLBACK(int) pgmR3CmdPhysToFile(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs)
3835	{
3836	/*
3837	* Validate input.
3838	*/
3839	NOREF(pCmd);
3840	if (!pVM)
3841	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
3842	if ( cArgs < 1
3843	\|\| cArgs > 2
3844	\|\| paArgs[0].enmType != DBGCVAR_TYPE_STRING
3845	\|\| ( cArgs > 1
3846	&& paArgs[1].enmType != DBGCVAR_TYPE_STRING))
3847	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: parser error, invalid arguments.\n");
3848	if ( cArgs >= 2
3849	&& strcmp(paArgs[1].u.pszString, "nozero"))
3850	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: Invalid 2nd argument '%s', must be 'nozero'.\n", paArgs[1].u.pszString);
3851	bool fIncZeroPgs = cArgs < 2;
3852
3853	/*
3854	* Open the output file and get the ram parameters.
3855	*/
3856	RTFILE hFile;
3857	int rc = RTFileOpen(&hFile, paArgs[0].u.pszString, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_WRITE);
3858	if (RT_FAILURE(rc))
3859	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: RTFileOpen(,'%s',) -> %Rrc.\n", paArgs[0].u.pszString, rc);
3860
3861	uint32_t cbRamHole = 0;
3862	CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
3863	uint64_t cbRam = 0;
3864	CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0);
3865	RTGCPHYS GCPhysEnd = cbRam + cbRamHole;
3866
3867	/*
3868	* Dump the physical memory, page by page.
3869	*/
3870	RTGCPHYS GCPhys = 0;
3871	char abZeroPg[PAGE_SIZE];
3872	RT_ZERO(abZeroPg);
3873
3874	pgmLock(pVM);
3875	for (PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesXR3;
3876	pRam && pRam->GCPhys < GCPhysEnd && RT_SUCCESS(rc);
3877	pRam = pRam->pNextR3)
3878	{
3879	/* fill the gap */
3880	if (pRam->GCPhys > GCPhys && fIncZeroPgs)
3881	{
3882	while (pRam->GCPhys > GCPhys && RT_SUCCESS(rc))
3883	{
3884	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3885	GCPhys += PAGE_SIZE;
3886	}
3887	}
3888
3889	PCPGMPAGE pPage = &pRam->aPages[0];
3890	while (GCPhys < pRam->GCPhysLast && RT_SUCCESS(rc))
3891	{
3892	if ( PGM_PAGE_IS_ZERO(pPage)
3893	\|\| PGM_PAGE_IS_BALLOONED(pPage))
3894	{
3895	if (fIncZeroPgs)
3896	{
3897	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3898	if (RT_FAILURE(rc))
3899	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3900	}
3901	}
3902	else
3903	{
3904	switch (PGM_PAGE_GET_TYPE(pPage))
3905	{
3906	case PGMPAGETYPE_RAM:
3907	case PGMPAGETYPE_ROM_SHADOW: /* trouble?? */
3908	case PGMPAGETYPE_ROM:
3909	case PGMPAGETYPE_MMIO2:
3910	{
3911	void const *pvPage;
3912	PGMPAGEMAPLOCK Lock;
3913	rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhys, &pvPage, &Lock);
3914	if (RT_SUCCESS(rc))
3915	{
3916	rc = RTFileWrite(hFile, pvPage, PAGE_SIZE, NULL);
3917	PGMPhysReleasePageMappingLock(pVM, &Lock);
3918	if (RT_FAILURE(rc))
3919	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3920	}
3921	else
3922	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: PGMPhysGCPhys2CCPtrReadOnly -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3923	break;
3924	}
3925
3926	default:
3927	AssertFailed();
3928	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
3929	case PGMPAGETYPE_MMIO:
3930	if (fIncZeroPgs)
3931	{
3932	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3933	if (RT_FAILURE(rc))
3934	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3935	}
3936	break;
3937	}
3938	}
3939
3940
3941	/* advance */
3942	GCPhys += PAGE_SIZE;
3943	pPage++;
3944	}
3945	}
3946	pgmUnlock(pVM);
3947
3948	RTFileClose(hFile);
3949	if (RT_SUCCESS(rc))
3950	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Successfully saved physical memory to '%s'.\n", paArgs[0].u.pszString);
3951	return VINF_SUCCESS;
3952	}
3953
3954	#endif /* VBOX_WITH_DEBUGGER */
3955
3956	/**
3957	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
3958	*/
3959	typedef struct PGMCHECKINTARGS
3960	{
3961	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
3962	PPGMPHYSHANDLER pPrevPhys;
3963	PPGMVIRTHANDLER pPrevVirt;
3964	PPGMPHYS2VIRTHANDLER pPrevPhys2Virt;
3965	PVM pVM;
3966	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
3967
3968	/**
3969	* Validate a node in the physical handler tree.
3970	*
3971	* @returns 0 on if ok, other wise 1.
3972	* @param pNode The handler node.
3973	* @param pvUser pVM.
3974	*/
3975	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
3976	{
3977	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
3978	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
3979	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
3980	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3981	AssertReleaseMsg( !pArgs->pPrevPhys
3982	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
3983	("pPrevPhys=%p %RGp-%RGp %s\n"
3984	" pCur=%p %RGp-%RGp %s\n",
3985	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
3986	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3987	pArgs->pPrevPhys = pCur;
3988	return 0;
3989	}
3990
3991
3992	/**
3993	* Validate a node in the virtual handler tree.
3994	*
3995	* @returns 0 on if ok, other wise 1.
3996	* @param pNode The handler node.
3997	* @param pvUser pVM.
3998	*/
3999	static DECLCALLBACK(int) pgmR3CheckIntegrityVirtHandlerNode(PAVLROGCPTRNODECORE pNode, void *pvUser)
4000	{
4001	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4002	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
4003	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4004	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGv-%RGv %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4005	AssertReleaseMsg( !pArgs->pPrevVirt
4006	\|\| (pArgs->fLeftToRight ? pArgs->pPrevVirt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevVirt->Core.KeyLast > pCur->Core.Key),
4007	("pPrevVirt=%p %RGv-%RGv %s\n"
4008	" pCur=%p %RGv-%RGv %s\n",
4009	pArgs->pPrevVirt, pArgs->pPrevVirt->Core.Key, pArgs->pPrevVirt->Core.KeyLast, pArgs->pPrevVirt->pszDesc,
4010	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4011	for (unsigned iPage = 0; iPage < pCur->cPages; iPage++)
4012	{
4013	AssertReleaseMsg(pCur->aPhysToVirt[iPage].offVirtHandler == -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage]),
4014	("pCur=%p %RGv-%RGv %s\n"
4015	"iPage=%d offVirtHandle=%#x expected %#x\n",
4016	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc,
4017	iPage, pCur->aPhysToVirt[iPage].offVirtHandler, -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage])));
4018	}
4019	pArgs->pPrevVirt = pCur;
4020	return 0;
4021	}
4022
4023
4024	/**
4025	* Validate a node in the virtual handler tree.
4026	*
4027	* @returns 0 on if ok, other wise 1.
4028	* @param pNode The handler node.
4029	* @param pvUser pVM.
4030	*/
4031	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysToVirtHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4032	{
4033	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4034	PPGMPHYS2VIRTHANDLER pCur = (PPGMPHYS2VIRTHANDLER)pNode;
4035	AssertReleaseMsgReturn(!((uintptr_t)pCur & 3), ("\n"), 1);
4036	AssertReleaseMsgReturn(!(pCur->offVirtHandler & 3), ("\n"), 1);
4037	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp\n", pCur, pCur->Core.Key, pCur->Core.KeyLast));
4038	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4039	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4040	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4041	" pCur=%p %RGp-%RGp\n",
4042	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4043	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4044	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4045	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4046	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4047	" pCur=%p %RGp-%RGp\n",
4048	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4049	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4050	AssertReleaseMsg((pCur->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD),
4051	("pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4052	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4053	if (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)
4054	{
4055	PPGMPHYS2VIRTHANDLER pCur2 = pCur;
4056	for (;;)
4057	{
4058	pCur2 = (PPGMPHYS2VIRTHANDLER)((intptr_t)pCur + (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK));
4059	AssertReleaseMsg(pCur2 != pCur,
4060	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4061	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4062	AssertReleaseMsg((pCur2->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == PGMPHYS2VIRTHANDLER_IN_TREE,
4063	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4064	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4065	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4066	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4067	AssertReleaseMsg((pCur2->Core.Key ^ pCur->Core.Key) < PAGE_SIZE,
4068	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4069	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4070	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4071	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4072	AssertReleaseMsg((pCur2->Core.KeyLast ^ pCur->Core.KeyLast) < PAGE_SIZE,
4073	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4074	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4075	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4076	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4077	if (!(pCur2->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK))
4078	break;
4079	}
4080	}
4081
4082	pArgs->pPrevPhys2Virt = pCur;
4083	return 0;
4084	}
4085
4086
4087	/**
4088	* Perform an integrity check on the PGM component.
4089	*
4090	* @returns VINF_SUCCESS if everything is fine.
4091	* @returns VBox error status after asserting on integrity breach.
4092	* @param pVM The VM handle.
4093	*/
4094	VMMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
4095	{
4096	AssertReleaseReturn(pVM->pgm.s.offVM, VERR_INTERNAL_ERROR);
4097
4098	/*
4099	* Check the trees.
4100	*/
4101	int cErrors = 0;
4102	const static PGMCHECKINTARGS s_LeftToRight = { true, NULL, NULL, NULL, pVM };
4103	const static PGMCHECKINTARGS s_RightToLeft = { false, NULL, NULL, NULL, pVM };
4104	PGMCHECKINTARGS Args = s_LeftToRight;
4105	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4106	Args = s_RightToLeft;
4107	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4108	Args = s_LeftToRight;
4109	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4110	Args = s_RightToLeft;
4111	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4112	Args = s_LeftToRight;
4113	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4114	Args = s_RightToLeft;
4115	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4116	Args = s_LeftToRight;
4117	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, true, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4118	Args = s_RightToLeft;
4119	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, false, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4120
4121	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
4122	}
4123

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGM.cpp@ 40054

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