PGM.cpp@ 9122

Last change on this file since 9122 was 9092, checked in by vboxsync, 17 years ago
We need a real shadow paging backend for PGMHandlerPhysicalPageTempOff (e.g. VGA optimization).
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1	/* $Id: PGM.cpp 9092 2008-05-23 16:03:14Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor. (Mixing stuff here, not good?)
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/** @page pg_pgm PGM - The Page Manager and Monitor
24	*
25	*
26	*
27	* @section sec_pgm_modes Paging Modes
28	*
29	* There are three memory contexts: Host Context (HC), Guest Context (GC)
30	* and intermediate context. When talking about paging HC can also be refered to
31	* as "host paging", and GC refered to as "shadow paging".
32	*
33	* We define three basic paging modes: 32-bit, PAE and AMD64. The host paging mode
34	* is defined by the host operating system. The mode used in the shadow paging mode
35	* depends on the host paging mode and what the mode the guest is currently in. The
36	* following relation between the two is defined:
37	*
38	* @verbatim
39	Host > 32-bit \| PAE \| AMD64 \|
40	Guest \| \| \| \|
41	==v================================
42	32-bit 32-bit PAE PAE
43	-------\|--------\|--------\|--------\|
44	PAE PAE PAE PAE
45	-------\|--------\|--------\|--------\|
46	AMD64 AMD64 AMD64 AMD64
47	-------\|--------\|--------\|--------\| @endverbatim
48	*
49	* All configuration except those in the diagonal (upper left) are expected to
50	* require special effort from the switcher (i.e. a bit slower).
51	*
52	*
53	*
54	*
55	* @section sec_pgm_shw The Shadow Memory Context
56	*
57	*
58	* [..]
59	*
60	* Because of guest context mappings requires PDPT and PML4 entries to allow
61	* writing on AMD64, the two upper levels will have fixed flags whatever the
62	* guest is thinking of using there. So, when shadowing the PD level we will
63	* calculate the effective flags of PD and all the higher levels. In legacy
64	* PAE mode this only applies to the PWT and PCD bits (the rest are
65	* ignored/reserved/MBZ). We will ignore those bits for the present.
66	*
67	*
68	*
69	* @section sec_pgm_int The Intermediate Memory Context
70	*
71	* The world switch goes thru an intermediate memory context which purpose it is
72	* to provide different mappings of the switcher code. All guest mappings are also
73	* present in this context.
74	*
75	* The switcher code is mapped at the same location as on the host, at an
76	* identity mapped location (physical equals virtual address), and at the
77	* hypervisor location.
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 successfull 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_pgmPhys PGMPhys - 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 assoicated 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	* - PGMPhysWriteGCPhys 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 attemted 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 separeate 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 otherway 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. There is already a tiny one for GC (see PGMGCDynMapGCPageEx)
484	* and we'll create a similar one for ring-0 unless we decide to setup a dedicate
485	* memory context for the HWACCM execution.
486	*
487	*
488	* @subsection subsec_pgmPhys_MappingCaches_R3 Ring-3
489	*
490	* We've considered implementing the ring-3 mapping cache page based but found
491	* that this was bother some when one had to take into account TLBs+SMP and
492	* portability (missing the necessary APIs on several platforms). There were
493	* also some performance concerns with this approach which hadn't quite been
494	* worked out.
495	*
496	* Instead, we'll be mapping allocation chunks into the VM process. This simplifies
497	* matters greatly quite a bit since we don't need to invent any new ring-0 stuff,
498	* only some minor RTR0MEMOBJ mapping stuff. The main concern here is that mapping
499	* compared to the previous idea is that mapping or unmapping a 1MB chunk is more
500	* costly than a single page, although how much more costly is uncertain. We'll
501	* try address this by using a very big cache, preferably bigger than the actual
502	* VM RAM size if possible. The current VM RAM sizes should give some idea for
503	* 32-bit boxes, while on 64-bit we can probably get away with employing an
504	* unlimited cache.
505	*
506	* The cache have to parts, as already indicated, the ring-3 side and the
507	* ring-0 side.
508	*
509	* The ring-0 will be tied to the page allocator since it will operate on the
510	* memory objects it contains. It will therefore require the first ring-0 mutex
511	* discussed in @ref subsec_pgmPhys_Serializing. We
512	* some double house keeping wrt to who has mapped what I think, since both
513	* VMMR0.r0 and RTR0MemObj will keep track of mapping relataions
514	*
515	* The ring-3 part will be protected by the pgm critsect. For simplicity, we'll
516	* require anyone that desires to do changes to the mapping cache to do that
517	* from within this critsect. Alternatively, we could employ a separate critsect
518	* for serializing changes to the mapping cache as this would reduce potential
519	* contention with other threads accessing mappings unrelated to the changes
520	* that are in process. We can see about this later, contention will show
521	* up in the statistics anyway, so it'll be simple to tell.
522	*
523	* The organization of the ring-3 part will be very much like how the allocation
524	* chunks are organized in ring-0, that is in an AVL tree by chunk id. To avoid
525	* having to walk the tree all the time, we'll have a couple of lookaside entries
526	* like in we do for I/O ports and MMIO in IOM.
527	*
528	* The simplified flow of a PGMPhysRead/Write function:
529	* -# Enter the PGM critsect.
530	* -# Lookup GCPhys in the ram ranges and get the Page ID.
531	* -# Calc the Allocation Chunk ID from the Page ID.
532	* -# Check the lookaside entries and then the AVL tree for the Chunk ID.
533	* If not found in cache:
534	* -# Call ring-0 and request it to be mapped and supply
535	* a chunk to be unmapped if the cache is maxed out already.
536	* -# Insert the new mapping into the AVL tree (id + R3 address).
537	* -# Update the relevant lookaside entry and return the mapping address.
538	* -# Do the read/write according to monitoring flags and everything.
539	* -# Leave the critsect.
540	*
541	*
542	* @section sec_pgmPhys_Fallback Fallback
543	*
544	* Current all the "second tier" hosts will not support the RTR0MemObjAllocPhysNC
545	* API and thus require a fallback.
546	*
547	* So, when RTR0MemObjAllocPhysNC returns VERR_NOT_SUPPORTED the page allocator
548	* will return to the ring-3 caller (and later ring-0) and asking it to seed
549	* the page allocator with some fresh pages (VERR_GMM_SEED_ME). Ring-3 will
550	* then perform an SUPPageAlloc(cbChunk >> PAGE_SHIFT) call and make a
551	* "SeededAllocPages" call to ring-0.
552	*
553	* The first time ring-0 sees the VERR_NOT_SUPPORTED failure it will disable
554	* all page sharing (zero page detection will continue). It will also force
555	* all allocations to come from the VM which seeded the page. Both these
556	* measures are taken to make sure that there will never be any need for
557	* mapping anything into ring-3 - everything will be mapped already.
558	*
559	* Whether we'll continue to use the current MM locked memory management
560	* for this I don't quite know (I'd prefer not to and just ditch that all
561	* togther), we'll see what's simplest to do.
562	*
563	*
564	*
565	* @section sec_pgmPhys_Changes Changes
566	*
567	* Breakdown of the changes involved?
568	*/
569
570
571	/** Saved state data unit version. */
572	#define PGM_SAVED_STATE_VERSION 6
573
574	/*******************************************************************************
575	* Header Files *
576	*******************************************************************************/
577	#define LOG_GROUP LOG_GROUP_PGM
578	#include <VBox/dbgf.h>
579	#include <VBox/pgm.h>
580	#include <VBox/cpum.h>
581	#include <VBox/iom.h>
582	#include <VBox/sup.h>
583	#include <VBox/mm.h>
584	#include <VBox/em.h>
585	#include <VBox/stam.h>
586	#include <VBox/rem.h>
587	#include <VBox/dbgf.h>
588	#include <VBox/rem.h>
589	#include <VBox/selm.h>
590	#include <VBox/ssm.h>
591	#include "PGMInternal.h"
592	#include <VBox/vm.h>
593	#include <VBox/dbg.h>
594	#include <VBox/hwaccm.h>
595
596	#include <iprt/assert.h>
597	#include <iprt/alloc.h>
598	#include <iprt/asm.h>
599	#include <iprt/thread.h>
600	#include <iprt/string.h>
601	#include <VBox/param.h>
602	#include <VBox/err.h>
603
604
605
606	/*******************************************************************************
607	* Internal Functions *
608	*******************************************************************************/
609	static int pgmR3InitPaging(PVM pVM);
610	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
611	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
612	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
613	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser);
614	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
615	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
616	#ifdef VBOX_STRICT
617	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser);
618	#endif
619	static DECLCALLBACK(int) pgmR3Save(PVM pVM, PSSMHANDLE pSSM);
620	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version);
621	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0);
622	static void pgmR3ModeDataSwitch(PVM pVM, PGMMODE enmShw, PGMMODE enmGst);
623	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher);
624
625	#ifdef VBOX_WITH_STATISTICS
626	static void pgmR3InitStats(PVM pVM);
627	#endif
628
629	#ifdef VBOX_WITH_DEBUGGER
630	/** @todo all but the two last commands must be converted to 'info'. */
631	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
632	static DECLCALLBACK(int) pgmR3CmdMap(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
633	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
634	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
635	#endif
636
637
638	/*******************************************************************************
639	* Global Variables *
640	*******************************************************************************/
641	#ifdef VBOX_WITH_DEBUGGER
642	/** Command descriptors. */
643	static const DBGCCMD g_aCmds[] =
644	{
645	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, pResultDesc, fFlags, pfnHandler pszSyntax, ....pszDescription */
646	{ "pgmram", 0, 0, NULL, 0, NULL, 0, pgmR3CmdRam, "", "Display the ram ranges." },
647	{ "pgmmap", 0, 0, NULL, 0, NULL, 0, pgmR3CmdMap, "", "Display the mapping ranges." },
648	{ "pgmsync", 0, 0, NULL, 0, NULL, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
649	{ "pgmsyncalways", 0, 0, NULL, 0, NULL, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
650	};
651	#endif
652
653
654
655
656	/*
657	* Shadow - 32-bit mode
658	*/
659	#define PGM_SHW_TYPE PGM_TYPE_32BIT
660	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
661	#define PGM_SHW_NAME_GC_STR(name) PGM_SHW_NAME_GC_32BIT_STR(name)
662	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_32BIT_STR(name)
663	#include "PGMShw.h"
664
665	/* Guest - real mode */
666	#define PGM_GST_TYPE PGM_TYPE_REAL
667	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
668	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_REAL_STR(name)
669	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
670	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
671	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_32BIT_REAL_STR(name)
672	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_REAL_STR(name)
673	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
674	#include "PGMGst.h"
675	#include "PGMBth.h"
676	#undef BTH_PGMPOOLKIND_PT_FOR_PT
677	#undef PGM_BTH_NAME
678	#undef PGM_BTH_NAME_GC_STR
679	#undef PGM_BTH_NAME_R0_STR
680	#undef PGM_GST_TYPE
681	#undef PGM_GST_NAME
682	#undef PGM_GST_NAME_GC_STR
683	#undef PGM_GST_NAME_R0_STR
684
685	/* Guest - protected mode */
686	#define PGM_GST_TYPE PGM_TYPE_PROT
687	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
688	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_PROT_STR(name)
689	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
690	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
691	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_32BIT_PROT_STR(name)
692	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_PROT_STR(name)
693	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
694	#include "PGMGst.h"
695	#include "PGMBth.h"
696	#undef BTH_PGMPOOLKIND_PT_FOR_PT
697	#undef PGM_BTH_NAME
698	#undef PGM_BTH_NAME_GC_STR
699	#undef PGM_BTH_NAME_R0_STR
700	#undef PGM_GST_TYPE
701	#undef PGM_GST_NAME
702	#undef PGM_GST_NAME_GC_STR
703	#undef PGM_GST_NAME_R0_STR
704
705	/* Guest - 32-bit mode */
706	#define PGM_GST_TYPE PGM_TYPE_32BIT
707	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
708	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_32BIT_STR(name)
709	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
710	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
711	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_32BIT_32BIT_STR(name)
712	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_32BIT_STR(name)
713	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
714	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
715	#include "PGMGst.h"
716	#include "PGMBth.h"
717	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
718	#undef BTH_PGMPOOLKIND_PT_FOR_PT
719	#undef PGM_BTH_NAME
720	#undef PGM_BTH_NAME_GC_STR
721	#undef PGM_BTH_NAME_R0_STR
722	#undef PGM_GST_TYPE
723	#undef PGM_GST_NAME
724	#undef PGM_GST_NAME_GC_STR
725	#undef PGM_GST_NAME_R0_STR
726
727	#undef PGM_SHW_TYPE
728	#undef PGM_SHW_NAME
729	#undef PGM_SHW_NAME_GC_STR
730	#undef PGM_SHW_NAME_R0_STR
731
732
733	/*
734	* Shadow - PAE mode
735	*/
736	#define PGM_SHW_TYPE PGM_TYPE_PAE
737	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
738	#define PGM_SHW_NAME_GC_STR(name) PGM_SHW_NAME_GC_PAE_STR(name)
739	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_PAE_STR(name)
740	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
741	#include "PGMShw.h"
742
743	/* Guest - real mode */
744	#define PGM_GST_TYPE PGM_TYPE_REAL
745	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
746	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_REAL_STR(name)
747	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
748	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
749	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_PAE_REAL_STR(name)
750	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_REAL_STR(name)
751	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
752	#include "PGMBth.h"
753	#undef BTH_PGMPOOLKIND_PT_FOR_PT
754	#undef PGM_BTH_NAME
755	#undef PGM_BTH_NAME_GC_STR
756	#undef PGM_BTH_NAME_R0_STR
757	#undef PGM_GST_TYPE
758	#undef PGM_GST_NAME
759	#undef PGM_GST_NAME_GC_STR
760	#undef PGM_GST_NAME_R0_STR
761
762	/* Guest - protected mode */
763	#define PGM_GST_TYPE PGM_TYPE_PROT
764	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
765	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_PROT_STR(name)
766	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
767	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
768	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_PAE_PROT_STR(name)
769	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PROT_STR(name)
770	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
771	#include "PGMBth.h"
772	#undef BTH_PGMPOOLKIND_PT_FOR_PT
773	#undef PGM_BTH_NAME
774	#undef PGM_BTH_NAME_GC_STR
775	#undef PGM_BTH_NAME_R0_STR
776	#undef PGM_GST_TYPE
777	#undef PGM_GST_NAME
778	#undef PGM_GST_NAME_GC_STR
779	#undef PGM_GST_NAME_R0_STR
780
781	/* Guest - 32-bit mode */
782	#define PGM_GST_TYPE PGM_TYPE_32BIT
783	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
784	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_32BIT_STR(name)
785	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
786	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
787	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_PAE_32BIT_STR(name)
788	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_32BIT_STR(name)
789	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
790	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
791	#include "PGMBth.h"
792	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
793	#undef BTH_PGMPOOLKIND_PT_FOR_PT
794	#undef PGM_BTH_NAME
795	#undef PGM_BTH_NAME_GC_STR
796	#undef PGM_BTH_NAME_R0_STR
797	#undef PGM_GST_TYPE
798	#undef PGM_GST_NAME
799	#undef PGM_GST_NAME_GC_STR
800	#undef PGM_GST_NAME_R0_STR
801
802	/* Guest - PAE mode */
803	#define PGM_GST_TYPE PGM_TYPE_PAE
804	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
805	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_PAE_STR(name)
806	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
807	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
808	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_PAE_PAE_STR(name)
809	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PAE_STR(name)
810	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
811	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
812	#include "PGMGst.h"
813	#include "PGMBth.h"
814	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
815	#undef BTH_PGMPOOLKIND_PT_FOR_PT
816	#undef PGM_BTH_NAME
817	#undef PGM_BTH_NAME_GC_STR
818	#undef PGM_BTH_NAME_R0_STR
819	#undef PGM_GST_TYPE
820	#undef PGM_GST_NAME
821	#undef PGM_GST_NAME_GC_STR
822	#undef PGM_GST_NAME_R0_STR
823
824	#undef PGM_SHW_TYPE
825	#undef PGM_SHW_NAME
826	#undef PGM_SHW_NAME_GC_STR
827	#undef PGM_SHW_NAME_R0_STR
828
829
830	/*
831	* Shadow - AMD64 mode
832	*/
833	#define PGM_SHW_TYPE PGM_TYPE_AMD64
834	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
835	#define PGM_SHW_NAME_GC_STR(name) PGM_SHW_NAME_GC_AMD64_STR(name)
836	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_AMD64_STR(name)
837	#include "PGMShw.h"
838
839	/* Guest - AMD64 mode */
840	#define PGM_GST_TYPE PGM_TYPE_AMD64
841	#define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
842	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_AMD64_STR(name)
843	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
844	#define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
845	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_AMD64_AMD64_STR(name)
846	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_AMD64_AMD64_STR(name)
847	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
848	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
849	#include "PGMGst.h"
850	#include "PGMBth.h"
851	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
852	#undef BTH_PGMPOOLKIND_PT_FOR_PT
853	#undef PGM_BTH_NAME
854	#undef PGM_BTH_NAME_GC_STR
855	#undef PGM_BTH_NAME_R0_STR
856	#undef PGM_GST_TYPE
857	#undef PGM_GST_NAME
858	#undef PGM_GST_NAME_GC_STR
859	#undef PGM_GST_NAME_R0_STR
860
861	#undef PGM_SHW_TYPE
862	#undef PGM_SHW_NAME
863	#undef PGM_SHW_NAME_GC_STR
864	#undef PGM_SHW_NAME_R0_STR
865
866	/*
867	* Shadow - Nested paging mode
868	*/
869	#define PGM_SHW_TYPE PGM_TYPE_NESTED
870	#define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
871	#define PGM_SHW_NAME_GC_STR(name) PGM_SHW_NAME_GC_NESTED_STR(name)
872	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_NESTED_STR(name)
873	#include "PGMShw.h"
874
875	/* Guest - real mode */
876	#define PGM_GST_TYPE PGM_TYPE_REAL
877	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
878	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_REAL_STR(name)
879	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
880	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
881	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_NESTED_REAL_STR(name)
882	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_REAL_STR(name)
883	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
884	#include "PGMBth.h"
885	#undef BTH_PGMPOOLKIND_PT_FOR_PT
886	#undef PGM_BTH_NAME
887	#undef PGM_BTH_NAME_GC_STR
888	#undef PGM_BTH_NAME_R0_STR
889	#undef PGM_GST_TYPE
890	#undef PGM_GST_NAME
891	#undef PGM_GST_NAME_GC_STR
892	#undef PGM_GST_NAME_R0_STR
893
894	/* Guest - protected mode */
895	#define PGM_GST_TYPE PGM_TYPE_PROT
896	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
897	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_PROT_STR(name)
898	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
899	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
900	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_NESTED_PROT_STR(name)
901	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PROT_STR(name)
902	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
903	#include "PGMBth.h"
904	#undef BTH_PGMPOOLKIND_PT_FOR_PT
905	#undef PGM_BTH_NAME
906	#undef PGM_BTH_NAME_GC_STR
907	#undef PGM_BTH_NAME_R0_STR
908	#undef PGM_GST_TYPE
909	#undef PGM_GST_NAME
910	#undef PGM_GST_NAME_GC_STR
911	#undef PGM_GST_NAME_R0_STR
912
913	/* Guest - 32-bit mode */
914	#define PGM_GST_TYPE PGM_TYPE_32BIT
915	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
916	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_32BIT_STR(name)
917	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
918	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
919	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_NESTED_32BIT_STR(name)
920	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_32BIT_STR(name)
921	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
922	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
923	#include "PGMBth.h"
924	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
925	#undef BTH_PGMPOOLKIND_PT_FOR_PT
926	#undef PGM_BTH_NAME
927	#undef PGM_BTH_NAME_GC_STR
928	#undef PGM_BTH_NAME_R0_STR
929	#undef PGM_GST_TYPE
930	#undef PGM_GST_NAME
931	#undef PGM_GST_NAME_GC_STR
932	#undef PGM_GST_NAME_R0_STR
933
934	/* Guest - PAE mode */
935	#define PGM_GST_TYPE PGM_TYPE_PAE
936	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
937	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_PAE_STR(name)
938	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
939	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
940	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_NESTED_PAE_STR(name)
941	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PAE_STR(name)
942	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
943	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
944	#include "PGMBth.h"
945	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
946	#undef BTH_PGMPOOLKIND_PT_FOR_PT
947	#undef PGM_BTH_NAME
948	#undef PGM_BTH_NAME_GC_STR
949	#undef PGM_BTH_NAME_R0_STR
950	#undef PGM_GST_TYPE
951	#undef PGM_GST_NAME
952	#undef PGM_GST_NAME_GC_STR
953	#undef PGM_GST_NAME_R0_STR
954
955	/* Guest - AMD64 mode */
956	#define PGM_GST_TYPE PGM_TYPE_AMD64
957	#define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
958	#define PGM_GST_NAME_GC_STR(name) PGM_GST_NAME_GC_AMD64_STR(name)
959	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
960	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
961	#define PGM_BTH_NAME_GC_STR(name) PGM_BTH_NAME_GC_NESTED_AMD64_STR(name)
962	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_AMD64_STR(name)
963	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
964	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
965	#include "PGMBth.h"
966	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
967	#undef BTH_PGMPOOLKIND_PT_FOR_PT
968	#undef PGM_BTH_NAME
969	#undef PGM_BTH_NAME_GC_STR
970	#undef PGM_BTH_NAME_R0_STR
971	#undef PGM_GST_TYPE
972	#undef PGM_GST_NAME
973	#undef PGM_GST_NAME_GC_STR
974	#undef PGM_GST_NAME_R0_STR
975
976	#undef PGM_SHW_TYPE
977	#undef PGM_SHW_NAME
978	#undef PGM_SHW_NAME_GC_STR
979	#undef PGM_SHW_NAME_R0_STR
980
981
982	/**
983	* Initiates the paging of VM.
984	*
985	* @returns VBox status code.
986	* @param pVM Pointer to VM structure.
987	*/
988	PGMR3DECL(int) PGMR3Init(PVM pVM)
989	{
990	LogFlow(("PGMR3Init:\n"));
991
992	/*
993	* Assert alignment and sizes.
994	*/
995	AssertRelease(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
996
997	/*
998	* Init the structure.
999	*/
1000	pVM->pgm.s.offVM = RT_OFFSETOF(VM, pgm.s);
1001	pVM->pgm.s.enmShadowMode = PGMMODE_INVALID;
1002	pVM->pgm.s.enmGuestMode = PGMMODE_INVALID;
1003	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1004	pVM->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
1005	pVM->pgm.s.GCPhysGstCR3Monitored = NIL_RTGCPHYS;
1006	pVM->pgm.s.fA20Enabled = true;
1007	pVM->pgm.s.pGstPaePDPTHC = NULL;
1008	pVM->pgm.s.pGstPaePDPTGC = 0;
1009	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.apGstPaePDsHC); i++)
1010	{
1011	pVM->pgm.s.apGstPaePDsHC[i] = NULL;
1012	pVM->pgm.s.apGstPaePDsGC[i] = 0;
1013	pVM->pgm.s.aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
1014	pVM->pgm.s.aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
1015	}
1016
1017	#ifdef VBOX_STRICT
1018	VMR3AtStateRegister(pVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
1019	#endif
1020
1021	/*
1022	* Get the configured RAM size - to estimate saved state size.
1023	*/
1024	uint64_t cbRam;
1025	int rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
1026	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1027	cbRam = pVM->pgm.s.cbRamSize = 0;
1028	else if (VBOX_SUCCESS(rc))
1029	{
1030	if (cbRam < PAGE_SIZE)
1031	cbRam = 0;
1032	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
1033	pVM->pgm.s.cbRamSize = (RTUINT)cbRam;
1034	}
1035	else
1036	{
1037	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Vrc.\n", rc));
1038	return rc;
1039	}
1040
1041	/*
1042	* Register saved state data unit.
1043	*/
1044	rc = SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
1045	NULL, pgmR3Save, NULL,
1046	NULL, pgmR3Load, NULL);
1047	if (VBOX_FAILURE(rc))
1048	return rc;
1049
1050	/*
1051	* Initialize the PGM critical section and flush the phys TLBs
1052	*/
1053	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSect, "PGM");
1054	AssertRCReturn(rc, rc);
1055
1056	PGMR3PhysChunkInvalidateTLB(pVM);
1057	PGMPhysInvalidatePageR3MapTLB(pVM);
1058	PGMPhysInvalidatePageR0MapTLB(pVM);
1059	PGMPhysInvalidatePageGCMapTLB(pVM);
1060
1061	/*
1062	* Trees
1063	*/
1064	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesHC);
1065	if (VBOX_SUCCESS(rc))
1066	{
1067	pVM->pgm.s.pTreesGC = MMHyperHC2GC(pVM, pVM->pgm.s.pTreesHC);
1068
1069	/*
1070	* Alocate the zero page.
1071	*/
1072	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
1073	}
1074	if (VBOX_SUCCESS(rc))
1075	{
1076	pVM->pgm.s.pvZeroPgGC = MMHyperR3ToGC(pVM, pVM->pgm.s.pvZeroPgR3);
1077	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1078	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTHCPHYS);
1079	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
1080	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
1081
1082	/*
1083	* Init the paging.
1084	*/
1085	rc = pgmR3InitPaging(pVM);
1086	}
1087	if (VBOX_SUCCESS(rc))
1088	{
1089	/*
1090	* Init the page pool.
1091	*/
1092	rc = pgmR3PoolInit(pVM);
1093	}
1094	if (VBOX_SUCCESS(rc))
1095	{
1096	/*
1097	* Info & statistics
1098	*/
1099	DBGFR3InfoRegisterInternal(pVM, "mode",
1100	"Shows the current paging mode. "
1101	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing's given.",
1102	pgmR3InfoMode);
1103	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
1104	"Dumps all the entries in the top level paging table. No arguments.",
1105	pgmR3InfoCr3);
1106	DBGFR3InfoRegisterInternal(pVM, "phys",
1107	"Dumps all the physical address ranges. No arguments.",
1108	pgmR3PhysInfo);
1109	DBGFR3InfoRegisterInternal(pVM, "handlers",
1110	"Dumps physical, virtual and hyper virtual handlers. "
1111	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
1112	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
1113	pgmR3InfoHandlers);
1114	DBGFR3InfoRegisterInternal(pVM, "mappings",
1115	"Dumps guest mappings.",
1116	pgmR3MapInfo);
1117
1118	STAM_REL_REG(pVM, &pVM->pgm.s.cGuestModeChanges, STAMTYPE_COUNTER, "/PGM/cGuestModeChanges", STAMUNIT_OCCURENCES, "Number of guest mode changes.");
1119	#ifdef VBOX_WITH_STATISTICS
1120	pgmR3InitStats(pVM);
1121	#endif
1122	#ifdef VBOX_WITH_DEBUGGER
1123	/*
1124	* Debugger commands.
1125	*/
1126	static bool fRegisteredCmds = false;
1127	if (!fRegisteredCmds)
1128	{
1129	int rc = DBGCRegisterCommands(&g_aCmds[0], ELEMENTS(g_aCmds));
1130	if (VBOX_SUCCESS(rc))
1131	fRegisteredCmds = true;
1132	}
1133	#endif
1134	return VINF_SUCCESS;
1135	}
1136
1137	/* Almost no cleanup necessary, MM frees all memory. */
1138	PDMR3CritSectDelete(&pVM->pgm.s.CritSect);
1139
1140	return rc;
1141	}
1142
1143
1144	/**
1145	* Init paging.
1146	*
1147	* Since we need to check what mode the host is operating in before we can choose
1148	* the right paging functions for the host we have to delay this until R0 has
1149	* been initialized.
1150	*
1151	* @returns VBox status code.
1152	* @param pVM VM handle.
1153	*/
1154	static int pgmR3InitPaging(PVM pVM)
1155	{
1156	/*
1157	* Force a recalculation of modes and switcher so everyone gets notified.
1158	*/
1159	pVM->pgm.s.enmShadowMode = PGMMODE_INVALID;
1160	pVM->pgm.s.enmGuestMode = PGMMODE_INVALID;
1161	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1162
1163	/*
1164	* Allocate static mapping space for whatever the cr3 register
1165	* points to and in the case of PAE mode to the 4 PDs.
1166	*/
1167	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * 5, "CR3 mapping", &pVM->pgm.s.GCPtrCR3Mapping);
1168	if (VBOX_FAILURE(rc))
1169	{
1170	AssertMsgFailed(("Failed to reserve two pages for cr mapping in HMA, rc=%Vrc\n", rc));
1171	return rc;
1172	}
1173	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1174
1175	/*
1176	* Allocate pages for the three possible intermediate contexts
1177	* (AMD64, PAE and plain 32-Bit). We maintain all three contexts
1178	* for the sake of simplicity. The AMD64 uses the PAE for the
1179	* lower levels, making the total number of pages 11 (3 + 7 + 1).
1180	*
1181	* We assume that two page tables will be enought for the core code
1182	* mappings (HC virtual and identity).
1183	*/
1184	pVM->pgm.s.pInterPD = (PX86PD)MMR3PageAllocLow(pVM);
1185	pVM->pgm.s.apInterPTs[0] = (PX86PT)MMR3PageAllocLow(pVM);
1186	pVM->pgm.s.apInterPTs[1] = (PX86PT)MMR3PageAllocLow(pVM);
1187	pVM->pgm.s.apInterPaePTs[0] = (PX86PTPAE)MMR3PageAlloc(pVM);
1188	pVM->pgm.s.apInterPaePTs[1] = (PX86PTPAE)MMR3PageAlloc(pVM);
1189	pVM->pgm.s.apInterPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM);
1190	pVM->pgm.s.apInterPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM);
1191	pVM->pgm.s.apInterPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM);
1192	pVM->pgm.s.apInterPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM);
1193	pVM->pgm.s.pInterPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM);
1194	pVM->pgm.s.pInterPaePDPT64 = (PX86PDPT)MMR3PageAllocLow(pVM);
1195	pVM->pgm.s.pInterPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM);
1196	if ( !pVM->pgm.s.pInterPD
1197	\|\| !pVM->pgm.s.apInterPTs[0]
1198	\|\| !pVM->pgm.s.apInterPTs[1]
1199	\|\| !pVM->pgm.s.apInterPaePTs[0]
1200	\|\| !pVM->pgm.s.apInterPaePTs[1]
1201	\|\| !pVM->pgm.s.apInterPaePDs[0]
1202	\|\| !pVM->pgm.s.apInterPaePDs[1]
1203	\|\| !pVM->pgm.s.apInterPaePDs[2]
1204	\|\| !pVM->pgm.s.apInterPaePDs[3]
1205	\|\| !pVM->pgm.s.pInterPaePDPT
1206	\|\| !pVM->pgm.s.pInterPaePDPT64
1207	\|\| !pVM->pgm.s.pInterPaePML4)
1208	{
1209	AssertMsgFailed(("Failed to allocate pages for the intermediate context!\n"));
1210	return VERR_NO_PAGE_MEMORY;
1211	}
1212
1213	pVM->pgm.s.HCPhysInterPD = MMPage2Phys(pVM, pVM->pgm.s.pInterPD);
1214	AssertRelease(pVM->pgm.s.HCPhysInterPD != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPD & PAGE_OFFSET_MASK));
1215	pVM->pgm.s.HCPhysInterPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT);
1216	AssertRelease(pVM->pgm.s.HCPhysInterPaePDPT != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePDPT & PAGE_OFFSET_MASK));
1217	pVM->pgm.s.HCPhysInterPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePML4);
1218	AssertRelease(pVM->pgm.s.HCPhysInterPaePML4 != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePML4 & PAGE_OFFSET_MASK));
1219
1220	/*
1221	* Initialize the pages, setting up the PML4 and PDPT for repetitive 4GB action.
1222	*/
1223	ASMMemZeroPage(pVM->pgm.s.pInterPD);
1224	ASMMemZeroPage(pVM->pgm.s.apInterPTs[0]);
1225	ASMMemZeroPage(pVM->pgm.s.apInterPTs[1]);
1226
1227	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[0]);
1228	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[1]);
1229
1230	ASMMemZeroPage(pVM->pgm.s.pInterPaePDPT);
1231	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.apInterPaePDs); i++)
1232	{
1233	ASMMemZeroPage(pVM->pgm.s.apInterPaePDs[i]);
1234	pVM->pgm.s.pInterPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT
1235	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[i]);
1236	}
1237
1238	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.pInterPaePDPT64->a); i++)
1239	{
1240	const unsigned iPD = i % ELEMENTS(pVM->pgm.s.apInterPaePDs);
1241	pVM->pgm.s.pInterPaePDPT64->a[i].u = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A \| PGM_PLXFLAGS_PERMANENT
1242	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[iPD]);
1243	}
1244
1245	RTHCPHYS HCPhysInterPaePDPT64 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64);
1246	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.pInterPaePML4->a); i++)
1247	pVM->pgm.s.pInterPaePML4->a[i].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A \| PGM_PLXFLAGS_PERMANENT
1248	\| HCPhysInterPaePDPT64;
1249
1250	/*
1251	* Allocate pages for the three possible guest contexts (AMD64, PAE and plain 32-Bit).
1252	* We allocate pages for all three posibilities to in order to simplify mappings and
1253	* avoid resource failure during mode switches. So, we need to cover all levels of the
1254	* of the first 4GB down to PD level.
1255	* As with the intermediate context, AMD64 uses the PAE PDPT and PDs.
1256	*/
1257	pVM->pgm.s.pHC32BitPD = (PX86PD)MMR3PageAllocLow(pVM);
1258	pVM->pgm.s.apHCPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM);
1259	pVM->pgm.s.apHCPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM);
1260	AssertRelease((uintptr_t)pVM->pgm.s.apHCPaePDs[0] + PAGE_SIZE == (uintptr_t)pVM->pgm.s.apHCPaePDs[1]);
1261	pVM->pgm.s.apHCPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM);
1262	AssertRelease((uintptr_t)pVM->pgm.s.apHCPaePDs[1] + PAGE_SIZE == (uintptr_t)pVM->pgm.s.apHCPaePDs[2]);
1263	pVM->pgm.s.apHCPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM);
1264	AssertRelease((uintptr_t)pVM->pgm.s.apHCPaePDs[2] + PAGE_SIZE == (uintptr_t)pVM->pgm.s.apHCPaePDs[3]);
1265	pVM->pgm.s.pHCPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM);
1266	pVM->pgm.s.pHCPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM);
1267	if ( !pVM->pgm.s.pHC32BitPD
1268	\|\| !pVM->pgm.s.apHCPaePDs[0]
1269	\|\| !pVM->pgm.s.apHCPaePDs[1]
1270	\|\| !pVM->pgm.s.apHCPaePDs[2]
1271	\|\| !pVM->pgm.s.apHCPaePDs[3]
1272	\|\| !pVM->pgm.s.pHCPaePDPT
1273	\|\| !pVM->pgm.s.pHCPaePML4)
1274	{
1275	AssertMsgFailed(("Failed to allocate pages for the intermediate context!\n"));
1276	return VERR_NO_PAGE_MEMORY;
1277	}
1278
1279	/* get physical addresses. */
1280	pVM->pgm.s.HCPhys32BitPD = MMPage2Phys(pVM, pVM->pgm.s.pHC32BitPD);
1281	Assert(MMPagePhys2Page(pVM, pVM->pgm.s.HCPhys32BitPD) == pVM->pgm.s.pHC32BitPD);
1282	pVM->pgm.s.aHCPhysPaePDs[0] = MMPage2Phys(pVM, pVM->pgm.s.apHCPaePDs[0]);
1283	pVM->pgm.s.aHCPhysPaePDs[1] = MMPage2Phys(pVM, pVM->pgm.s.apHCPaePDs[1]);
1284	pVM->pgm.s.aHCPhysPaePDs[2] = MMPage2Phys(pVM, pVM->pgm.s.apHCPaePDs[2]);
1285	pVM->pgm.s.aHCPhysPaePDs[3] = MMPage2Phys(pVM, pVM->pgm.s.apHCPaePDs[3]);
1286	pVM->pgm.s.HCPhysPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pHCPaePDPT);
1287	pVM->pgm.s.HCPhysPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pHCPaePML4);
1288
1289	/*
1290	* Initialize the pages, setting up the PML4 and PDPT for action below 4GB.
1291	*/
1292	ASMMemZero32(pVM->pgm.s.pHC32BitPD, PAGE_SIZE);
1293
1294	ASMMemZero32(pVM->pgm.s.pHCPaePDPT, PAGE_SIZE);
1295	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.apHCPaePDs); i++)
1296	{
1297	ASMMemZero32(pVM->pgm.s.apHCPaePDs[i], PAGE_SIZE);
1298	pVM->pgm.s.pHCPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT \| pVM->pgm.s.aHCPhysPaePDs[i];
1299	/* The flags will be corrected when entering and leaving long mode. */
1300	}
1301
1302	ASMMemZero32(pVM->pgm.s.pHCPaePML4, PAGE_SIZE);
1303	pVM->pgm.s.pHCPaePML4->a[0].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_A
1304	\| PGM_PLXFLAGS_PERMANENT \| pVM->pgm.s.HCPhysPaePDPT;
1305
1306	CPUMSetHyperCR3(pVM, (uint32_t)pVM->pgm.s.HCPhys32BitPD);
1307
1308	/*
1309	* Initialize paging workers and mode from current host mode
1310	* and the guest running in real mode.
1311	*/
1312	pVM->pgm.s.enmHostMode = SUPGetPagingMode();
1313	switch (pVM->pgm.s.enmHostMode)
1314	{
1315	case SUPPAGINGMODE_32_BIT:
1316	case SUPPAGINGMODE_32_BIT_GLOBAL:
1317	case SUPPAGINGMODE_PAE:
1318	case SUPPAGINGMODE_PAE_GLOBAL:
1319	case SUPPAGINGMODE_PAE_NX:
1320	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1321	break;
1322
1323	case SUPPAGINGMODE_AMD64:
1324	case SUPPAGINGMODE_AMD64_GLOBAL:
1325	case SUPPAGINGMODE_AMD64_NX:
1326	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1327	#ifndef VBOX_WITH_HYBIRD_32BIT_KERNEL
1328	if (ARCH_BITS != 64)
1329	{
1330	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1331	LogRel(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1332	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1333	}
1334	#endif
1335	break;
1336	default:
1337	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1338	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1339	}
1340	rc = pgmR3ModeDataInit(pVM, false /* don't resolve GC and R0 syms yet */);
1341	if (VBOX_SUCCESS(rc))
1342	rc = PGMR3ChangeMode(pVM, PGMMODE_REAL);
1343	if (VBOX_SUCCESS(rc))
1344	{
1345	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1346	#if HC_ARCH_BITS == 64
1347	LogRel(("Debug: HCPhys32BitPD=%VHp aHCPhysPaePDs={%VHp,%VHp,%VHp,%VHp} HCPhysPaePDPT=%VHp HCPhysPaePML4=%VHp\n",
1348	pVM->pgm.s.HCPhys32BitPD, pVM->pgm.s.aHCPhysPaePDs[0], pVM->pgm.s.aHCPhysPaePDs[1], pVM->pgm.s.aHCPhysPaePDs[2], pVM->pgm.s.aHCPhysPaePDs[3],
1349	pVM->pgm.s.HCPhysPaePDPT, pVM->pgm.s.HCPhysPaePML4));
1350	LogRel(("Debug: HCPhysInterPD=%VHp HCPhysInterPaePDPT=%VHp HCPhysInterPaePML4=%VHp\n",
1351	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1352	LogRel(("Debug: apInterPTs={%VHp,%VHp} apInterPaePTs={%VHp,%VHp} apInterPaePDs={%VHp,%VHp,%VHp,%VHp} pInterPaePDPT64=%VHp\n",
1353	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1354	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1355	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]),
1356	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1357	#endif
1358
1359	return VINF_SUCCESS;
1360	}
1361
1362	LogFlow(("pgmR3InitPaging: returns %Vrc\n", rc));
1363	return rc;
1364	}
1365
1366
1367	#ifdef VBOX_WITH_STATISTICS
1368	/**
1369	* Init statistics
1370	*/
1371	static void pgmR3InitStats(PVM pVM)
1372	{
1373	PPGM pPGM = &pVM->pgm.s;
1374	STAM_REG(pVM, &pPGM->StatGCInvalidatePage, STAMTYPE_PROFILE, "/PGM/GC/InvalidatePage", STAMUNIT_TICKS_PER_CALL, "PGMGCInvalidatePage() profiling.");
1375	STAM_REG(pVM, &pPGM->StatGCInvalidatePage4KBPages, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/4KBPages", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for a 4KB page.");
1376	STAM_REG(pVM, &pPGM->StatGCInvalidatePage4MBPages, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/4MBPages", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for a 4MB page.");
1377	STAM_REG(pVM, &pPGM->StatGCInvalidatePage4MBPagesSkip, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/4MBPagesSkip",STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() skipped a 4MB page.");
1378	STAM_REG(pVM, &pPGM->StatGCInvalidatePagePDMappings, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/PDMappings", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for a page directory containing mappings (no conflict).");
1379	STAM_REG(pVM, &pPGM->StatGCInvalidatePagePDNAs, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/PDNAs", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for a not accessed page directory.");
1380	STAM_REG(pVM, &pPGM->StatGCInvalidatePagePDNPs, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/PDNPs", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for a not present page directory.");
1381	STAM_REG(pVM, &pPGM->StatGCInvalidatePagePDOutOfSync, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/PDOutOfSync", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for an out of sync page directory.");
1382	STAM_REG(pVM, &pPGM->StatGCInvalidatePageSkipped, STAMTYPE_COUNTER, "/PGM/GC/InvalidatePage/Skipped", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
1383	STAM_REG(pVM, &pPGM->StatGCSyncPT, STAMTYPE_PROFILE, "/PGM/GC/SyncPT", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMGCSyncPT() body.");
1384	STAM_REG(pVM, &pPGM->StatGCAccessedPage, STAMTYPE_COUNTER, "/PGM/GC/AccessedPage", STAMUNIT_OCCURENCES, "The number of pages marked not present for accessed bit emulation.");
1385	STAM_REG(pVM, &pPGM->StatGCDirtyPage, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/Mark", STAMUNIT_OCCURENCES, "The number of pages marked read-only for dirty bit tracking.");
1386	STAM_REG(pVM, &pPGM->StatGCDirtyPageBig, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/MarkBig", STAMUNIT_OCCURENCES, "The number of 4MB pages marked read-only for dirty bit tracking.");
1387	STAM_REG(pVM, &pPGM->StatGCDirtyPageTrap, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/Trap", STAMUNIT_OCCURENCES, "The number of traps generated for dirty bit tracking.");
1388	STAM_REG(pVM, &pPGM->StatGCDirtyPageSkipped, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/Skipped", STAMUNIT_OCCURENCES, "The number of pages already dirty or readonly.");
1389	STAM_REG(pVM, &pPGM->StatGCDirtiedPage, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/SetDirty", STAMUNIT_OCCURENCES, "The number of pages marked dirty because of write accesses.");
1390	STAM_REG(pVM, &pPGM->StatGCDirtyTrackRealPF, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/RealPF", STAMUNIT_OCCURENCES, "The number of real pages faults during dirty bit tracking.");
1391	STAM_REG(pVM, &pPGM->StatGCPageAlreadyDirty, STAMTYPE_COUNTER, "/PGM/GC/DirtyPage/AlreadySet", STAMUNIT_OCCURENCES, "The number of pages already marked dirty because of write accesses.");
1392	STAM_REG(pVM, &pPGM->StatGCDirtyBitTracking, STAMTYPE_PROFILE, "/PGM/GC/DirtyPage", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMTrackDirtyBit() body.");
1393	STAM_REG(pVM, &pPGM->StatGCSyncPTAlloc, STAMTYPE_COUNTER, "/PGM/GC/SyncPT/Alloc", STAMUNIT_OCCURENCES, "The number of times PGMGCSyncPT() needed to allocate page tables.");
1394	STAM_REG(pVM, &pPGM->StatGCSyncPTConflict, STAMTYPE_COUNTER, "/PGM/GC/SyncPT/Conflicts", STAMUNIT_OCCURENCES, "The number of times PGMGCSyncPT() detected conflicts.");
1395	STAM_REG(pVM, &pPGM->StatGCSyncPTFailed, STAMTYPE_COUNTER, "/PGM/GC/SyncPT/Failed", STAMUNIT_OCCURENCES, "The number of times PGMGCSyncPT() failed.");
1396
1397	STAM_REG(pVM, &pPGM->StatGCTrap0e, STAMTYPE_PROFILE, "/PGM/GC/Trap0e", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMGCTrap0eHandler() body.");
1398	STAM_REG(pVM, &pPGM->StatCheckPageFault, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/CheckPageFault", STAMUNIT_TICKS_PER_CALL, "Profiling of checking for dirty/access emulation faults.");
1399	STAM_REG(pVM, &pPGM->StatLazySyncPT, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/SyncPT", STAMUNIT_TICKS_PER_CALL, "Profiling of lazy page table syncing.");
1400	STAM_REG(pVM, &pPGM->StatMapping, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/Mapping", STAMUNIT_TICKS_PER_CALL, "Profiling of checking virtual mappings.");
1401	STAM_REG(pVM, &pPGM->StatOutOfSync, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/OutOfSync", STAMUNIT_TICKS_PER_CALL, "Profiling of out of sync page handling.");
1402	STAM_REG(pVM, &pPGM->StatHandlers, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/Handlers", STAMUNIT_TICKS_PER_CALL, "Profiling of checking handlers.");
1403	STAM_REG(pVM, &pPGM->StatEIPHandlers, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time/EIPHandlers", STAMUNIT_TICKS_PER_CALL, "Profiling of checking eip handlers.");
1404	STAM_REG(pVM, &pPGM->StatTrap0eCSAM, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/CSAM", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is CSAM.");
1405	STAM_REG(pVM, &pPGM->StatTrap0eDirtyAndAccessedBits, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/DirtyAndAccessedBits", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is dirty and/or accessed bit emulation.");
1406	STAM_REG(pVM, &pPGM->StatTrap0eGuestTrap, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/GuestTrap", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1407	STAM_REG(pVM, &pPGM->StatTrap0eHndPhys, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/HandlerPhysical", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1408	STAM_REG(pVM, &pPGM->StatTrap0eHndVirt, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/HandlerVirtual",STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is a virtual handler.");
1409	STAM_REG(pVM, &pPGM->StatTrap0eHndUnhandled, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/HandlerUnhandled", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is access outside the monitored areas of a monitored page.");
1410	STAM_REG(pVM, &pPGM->StatTrap0eMisc, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/Misc", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is not known.");
1411	STAM_REG(pVM, &pPGM->StatTrap0eOutOfSync, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/OutOfSync", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is an out-of-sync page.");
1412	STAM_REG(pVM, &pPGM->StatTrap0eOutOfSyncHndPhys, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/OutOfSyncHndPhys", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is an out-of-sync physical handler page.");
1413	STAM_REG(pVM, &pPGM->StatTrap0eOutOfSyncHndVirt, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/OutOfSyncHndVirt", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is an out-of-sync virtual handler page.");
1414	STAM_REG(pVM, &pPGM->StatTrap0eOutOfSyncObsHnd, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/OutOfSyncObsHnd", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is an obsolete handler page.");
1415	STAM_REG(pVM, &pPGM->StatTrap0eSyncPT, STAMTYPE_PROFILE, "/PGM/GC/Trap0e/Time2/SyncPT", STAMUNIT_TICKS_PER_CALL, "Profiling of the Trap0eHandler body when the cause is lazy syncing of a PT.");
1416
1417	STAM_REG(pVM, &pPGM->StatTrap0eMapHandler, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/Mapping", STAMUNIT_OCCURENCES, "Number of traps due to access handlers in mappings.");
1418	STAM_REG(pVM, &pPGM->StatHandlersOutOfSync, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/OutOfSync", STAMUNIT_OCCURENCES, "Number of traps due to out-of-sync handled pages.");
1419	STAM_REG(pVM, &pPGM->StatHandlersPhysical, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/Physical", STAMUNIT_OCCURENCES, "Number of traps due to physical access handlers.");
1420	STAM_REG(pVM, &pPGM->StatHandlersVirtual, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/Virtual", STAMUNIT_OCCURENCES, "Number of traps due to virtual access handlers.");
1421	STAM_REG(pVM, &pPGM->StatHandlersVirtualByPhys, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/VirtualByPhys", STAMUNIT_OCCURENCES, "Number of traps due to virtual access handlers by physical address.");
1422	STAM_REG(pVM, &pPGM->StatHandlersVirtualUnmarked, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/VirtualUnmarked", STAMUNIT_OCCURENCES,"Number of traps due to virtual access handlers by virtual address (without proper physical flags).");
1423	STAM_REG(pVM, &pPGM->StatHandlersUnhandled, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/Unhandled", STAMUNIT_OCCURENCES, "Number of traps due to access outside range of monitored page(s).");
1424	STAM_REG(pVM, &pPGM->StatHandlersInvalid, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Handlers/Invalid", STAMUNIT_OCCURENCES, "Number of traps due to access to invalid physical memory.");
1425
1426	STAM_REG(pVM, &pPGM->StatGCTrap0eConflicts, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Conflicts", STAMUNIT_OCCURENCES, "The number of times #PF was caused by an undetected conflict.");
1427	STAM_REG(pVM, &pPGM->StatGCTrap0eUSNotPresentRead, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/NPRead", STAMUNIT_OCCURENCES, "Number of user mode not present read page faults.");
1428	STAM_REG(pVM, &pPGM->StatGCTrap0eUSNotPresentWrite, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/NPWrite", STAMUNIT_OCCURENCES, "Number of user mode not present write page faults.");
1429	STAM_REG(pVM, &pPGM->StatGCTrap0eUSWrite, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/Write", STAMUNIT_OCCURENCES, "Number of user mode write page faults.");
1430	STAM_REG(pVM, &pPGM->StatGCTrap0eUSReserved, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/Reserved", STAMUNIT_OCCURENCES, "Number of user mode reserved bit page faults.");
1431	STAM_REG(pVM, &pPGM->StatGCTrap0eUSNXE, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/NXE", STAMUNIT_OCCURENCES, "Number of user mode NXE page faults.");
1432	STAM_REG(pVM, &pPGM->StatGCTrap0eUSRead, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/User/Read", STAMUNIT_OCCURENCES, "Number of user mode read page faults.");
1433
1434	STAM_REG(pVM, &pPGM->StatGCTrap0eSVNotPresentRead, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Supervisor/NPRead", STAMUNIT_OCCURENCES, "Number of supervisor mode not present read page faults.");
1435	STAM_REG(pVM, &pPGM->StatGCTrap0eSVNotPresentWrite, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Supervisor/NPWrite", STAMUNIT_OCCURENCES, "Number of supervisor mode not present write page faults.");
1436	STAM_REG(pVM, &pPGM->StatGCTrap0eSVWrite, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Supervisor/Write", STAMUNIT_OCCURENCES, "Number of supervisor mode write page faults.");
1437	STAM_REG(pVM, &pPGM->StatGCTrap0eSVReserved, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Supervisor/Reserved", STAMUNIT_OCCURENCES, "Number of supervisor mode reserved bit page faults.");
1438	STAM_REG(pVM, &pPGM->StatGCTrap0eSNXE, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/Supervisor/NXE", STAMUNIT_OCCURENCES, "Number of supervisor mode NXE page faults.");
1439	STAM_REG(pVM, &pPGM->StatGCTrap0eUnhandled, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/GuestPF/Unhandled", STAMUNIT_OCCURENCES, "Number of guest real page faults.");
1440	STAM_REG(pVM, &pPGM->StatGCTrap0eMap, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/GuestPF/Map", STAMUNIT_OCCURENCES, "Number of guest page faults due to map accesses.");
1441
1442	STAM_REG(pVM, &pPGM->StatTrap0eWPEmulGC, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/WP/InGC", STAMUNIT_OCCURENCES, "Number of guest page faults due to X86_CR0_WP emulation.");
1443	STAM_REG(pVM, &pPGM->StatTrap0eWPEmulR3, STAMTYPE_COUNTER, "/PGM/GC/Trap0e/WP/ToR3", STAMUNIT_OCCURENCES, "Number of guest page faults due to X86_CR0_WP emulation (forward to R3 for emulation).");
1444
1445	STAM_REG(pVM, &pPGM->StatGCGuestCR3WriteHandled, STAMTYPE_COUNTER, "/PGM/GC/CR3WriteInt", STAMUNIT_OCCURENCES, "The number of times the Guest CR3 change was successfully handled.");
1446	STAM_REG(pVM, &pPGM->StatGCGuestCR3WriteUnhandled, STAMTYPE_COUNTER, "/PGM/GC/CR3WriteEmu", STAMUNIT_OCCURENCES, "The number of times the Guest CR3 change was passed back to the recompiler.");
1447	STAM_REG(pVM, &pPGM->StatGCGuestCR3WriteConflict, STAMTYPE_COUNTER, "/PGM/GC/CR3WriteConflict", STAMUNIT_OCCURENCES, "The number of times the Guest CR3 monitoring detected a conflict.");
1448
1449	STAM_REG(pVM, &pPGM->StatGCPageOutOfSyncSupervisor, STAMTYPE_COUNTER, "/PGM/GC/OutOfSync/SuperVisor", STAMUNIT_OCCURENCES, "Number of traps due to pages out of sync.");
1450	STAM_REG(pVM, &pPGM->StatGCPageOutOfSyncUser, STAMTYPE_COUNTER, "/PGM/GC/OutOfSync/User", STAMUNIT_OCCURENCES, "Number of traps due to pages out of sync.");
1451
1452	STAM_REG(pVM, &pPGM->StatGCGuestROMWriteHandled, STAMTYPE_COUNTER, "/PGM/GC/ROMWriteInt", STAMUNIT_OCCURENCES, "The number of times the Guest ROM change was successfully handled.");
1453	STAM_REG(pVM, &pPGM->StatGCGuestROMWriteUnhandled, STAMTYPE_COUNTER, "/PGM/GC/ROMWriteEmu", STAMUNIT_OCCURENCES, "The number of times the Guest ROM change was passed back to the recompiler.");
1454
1455	STAM_REG(pVM, &pPGM->StatDynMapCacheHits, STAMTYPE_COUNTER, "/PGM/GC/DynMapCache/Hits" , STAMUNIT_OCCURENCES, "Number of dynamic page mapping cache hits.");
1456	STAM_REG(pVM, &pPGM->StatDynMapCacheMisses, STAMTYPE_COUNTER, "/PGM/GC/DynMapCache/Misses" , STAMUNIT_OCCURENCES, "Number of dynamic page mapping cache misses.");
1457
1458	STAM_REG(pVM, &pPGM->StatHCDetectedConflicts, STAMTYPE_COUNTER, "/PGM/HC/DetectedConflicts", STAMUNIT_OCCURENCES, "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1459	STAM_REG(pVM, &pPGM->StatHCGuestPDWrite, STAMTYPE_COUNTER, "/PGM/HC/PDWrite", STAMUNIT_OCCURENCES, "The total number of times pgmHCGuestPDWriteHandler() was called.");
1460	STAM_REG(pVM, &pPGM->StatHCGuestPDWriteConflict, STAMTYPE_COUNTER, "/PGM/HC/PDWriteConflict", STAMUNIT_OCCURENCES, "The number of times pgmHCGuestPDWriteHandler() detected a conflict.");
1461
1462	STAM_REG(pVM, &pPGM->StatHCInvalidatePage, STAMTYPE_PROFILE, "/PGM/HC/InvalidatePage", STAMUNIT_TICKS_PER_CALL, "PGMHCInvalidatePage() profiling.");
1463	STAM_REG(pVM, &pPGM->StatHCInvalidatePage4KBPages, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/4KBPages", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was called for a 4KB page.");
1464	STAM_REG(pVM, &pPGM->StatHCInvalidatePage4MBPages, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/4MBPages", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was called for a 4MB page.");
1465	STAM_REG(pVM, &pPGM->StatHCInvalidatePage4MBPagesSkip, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/4MBPagesSkip",STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() skipped a 4MB page.");
1466	STAM_REG(pVM, &pPGM->StatHCInvalidatePagePDMappings, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/PDMappings", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was called for a page directory containing mappings (no conflict).");
1467	STAM_REG(pVM, &pPGM->StatHCInvalidatePagePDNAs, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/PDNAs", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was called for a not accessed page directory.");
1468	STAM_REG(pVM, &pPGM->StatHCInvalidatePagePDNPs, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/PDNPs", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was called for a not present page directory.");
1469	STAM_REG(pVM, &pPGM->StatHCInvalidatePagePDOutOfSync, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/PDOutOfSync", STAMUNIT_OCCURENCES, "The number of times PGMGCInvalidatePage() was called for an out of sync page directory.");
1470	STAM_REG(pVM, &pPGM->StatHCInvalidatePageSkipped, STAMTYPE_COUNTER, "/PGM/HC/InvalidatePage/Skipped", STAMUNIT_OCCURENCES, "The number of times PGMHCInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
1471	STAM_REG(pVM, &pPGM->StatHCResolveConflict, STAMTYPE_PROFILE, "/PGM/HC/ResolveConflict", STAMUNIT_TICKS_PER_CALL, "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1472	STAM_REG(pVM, &pPGM->StatHCPrefetch, STAMTYPE_PROFILE, "/PGM/HC/Prefetch", STAMUNIT_TICKS_PER_CALL, "PGMR3PrefetchPage profiling.");
1473
1474	STAM_REG(pVM, &pPGM->StatHCSyncPT, STAMTYPE_PROFILE, "/PGM/HC/SyncPT", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMR3SyncPT() body.");
1475	STAM_REG(pVM, &pPGM->StatHCAccessedPage, STAMTYPE_COUNTER, "/PGM/HC/AccessedPage", STAMUNIT_OCCURENCES, "The number of pages marked not present for accessed bit emulation.");
1476	STAM_REG(pVM, &pPGM->StatHCDirtyPage, STAMTYPE_COUNTER, "/PGM/HC/DirtyPage/Mark", STAMUNIT_OCCURENCES, "The number of pages marked read-only for dirty bit tracking.");
1477	STAM_REG(pVM, &pPGM->StatHCDirtyPageBig, STAMTYPE_COUNTER, "/PGM/HC/DirtyPage/MarkBig", STAMUNIT_OCCURENCES, "The number of 4MB pages marked read-only for dirty bit tracking.");
1478	STAM_REG(pVM, &pPGM->StatHCDirtyPageTrap, STAMTYPE_COUNTER, "/PGM/HC/DirtyPage/Trap", STAMUNIT_OCCURENCES, "The number of traps generated for dirty bit tracking.");
1479	STAM_REG(pVM, &pPGM->StatHCDirtyPageSkipped, STAMTYPE_COUNTER, "/PGM/HC/DirtyPage/Skipped", STAMUNIT_OCCURENCES, "The number of pages already dirty or readonly.");
1480	STAM_REG(pVM, &pPGM->StatHCDirtyBitTracking, STAMTYPE_PROFILE, "/PGM/HC/DirtyPage", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMTrackDirtyBit() body.");
1481
1482	STAM_REG(pVM, &pPGM->StatGCSyncPagePDNAs, STAMTYPE_COUNTER, "/PGM/GC/SyncPagePDNAs", STAMUNIT_OCCURENCES, "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1483	STAM_REG(pVM, &pPGM->StatGCSyncPagePDOutOfSync, STAMTYPE_COUNTER, "/PGM/GC/SyncPagePDOutOfSync", STAMUNIT_OCCURENCES, "The number of time we've encountered an out-of-sync PD in SyncPage.");
1484	STAM_REG(pVM, &pPGM->StatHCSyncPagePDNAs, STAMTYPE_COUNTER, "/PGM/HC/SyncPagePDNAs", STAMUNIT_OCCURENCES, "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1485	STAM_REG(pVM, &pPGM->StatHCSyncPagePDOutOfSync, STAMTYPE_COUNTER, "/PGM/HC/SyncPagePDOutOfSync", STAMUNIT_OCCURENCES, "The number of time we've encountered an out-of-sync PD in SyncPage.");
1486
1487	STAM_REG(pVM, &pPGM->StatFlushTLB, STAMTYPE_PROFILE, "/PGM/FlushTLB", STAMUNIT_OCCURENCES, "Profiling of the PGMFlushTLB() body.");
1488	STAM_REG(pVM, &pPGM->StatFlushTLBNewCR3, STAMTYPE_COUNTER, "/PGM/FlushTLB/NewCR3", STAMUNIT_OCCURENCES, "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
1489	STAM_REG(pVM, &pPGM->StatFlushTLBNewCR3Global, STAMTYPE_COUNTER, "/PGM/FlushTLB/NewCR3Global", STAMUNIT_OCCURENCES, "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1490	STAM_REG(pVM, &pPGM->StatFlushTLBSameCR3, STAMTYPE_COUNTER, "/PGM/FlushTLB/SameCR3", STAMUNIT_OCCURENCES, "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
1491	STAM_REG(pVM, &pPGM->StatFlushTLBSameCR3Global, STAMTYPE_COUNTER, "/PGM/FlushTLB/SameCR3Global", STAMUNIT_OCCURENCES, "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1492
1493	STAM_REG(pVM, &pPGM->StatGCSyncCR3, STAMTYPE_PROFILE, "/PGM/GC/SyncCR3", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMSyncCR3() body.");
1494	STAM_REG(pVM, &pPGM->StatGCSyncCR3Handlers, STAMTYPE_PROFILE, "/PGM/GC/SyncCR3/Handlers", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMSyncCR3() update handler section.");
1495	STAM_REG(pVM, &pPGM->StatGCSyncCR3HandlerVirtualUpdate, STAMTYPE_PROFILE, "/PGM/GC/SyncCR3/Handlers/VirtualUpdate",STAMUNIT_TICKS_PER_CALL, "Profiling of the virtual handler updates.");
1496	STAM_REG(pVM, &pPGM->StatGCSyncCR3HandlerVirtualReset, STAMTYPE_PROFILE, "/PGM/GC/SyncCR3/Handlers/VirtualReset", STAMUNIT_TICKS_PER_CALL, "Profiling of the virtual handler resets.");
1497	STAM_REG(pVM, &pPGM->StatGCSyncCR3Global, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/Global", STAMUNIT_OCCURENCES, "The number of global CR3 syncs.");
1498	STAM_REG(pVM, &pPGM->StatGCSyncCR3NotGlobal, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/NotGlobal", STAMUNIT_OCCURENCES, "The number of non-global CR3 syncs.");
1499	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstCacheHit, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstChacheHit", STAMUNIT_OCCURENCES, "The number of times we got some kind of a cache hit.");
1500	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstFreed, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstFreed", STAMUNIT_OCCURENCES, "The number of times we've had to free a shadow entry.");
1501	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstFreedSrcNP, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstFreedSrcNP", STAMUNIT_OCCURENCES, "The number of times we've had to free a shadow entry for which the source entry was not present.");
1502	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstNotPresent, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstNotPresent", STAMUNIT_OCCURENCES, "The number of times we've encountered a not present shadow entry for a present guest entry.");
1503	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstSkippedGlobalPD, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstSkippedGlobalPD", STAMUNIT_OCCURENCES, "The number of times a global page directory wasn't flushed.");
1504	STAM_REG(pVM, &pPGM->StatGCSyncCR3DstSkippedGlobalPT, STAMTYPE_COUNTER, "/PGM/GC/SyncCR3/DstSkippedGlobalPT", STAMUNIT_OCCURENCES, "The number of times a page table with only global entries wasn't flushed.");
1505
1506	STAM_REG(pVM, &pPGM->StatHCSyncCR3, STAMTYPE_PROFILE, "/PGM/HC/SyncCR3", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMSyncCR3() body.");
1507	STAM_REG(pVM, &pPGM->StatHCSyncCR3Handlers, STAMTYPE_PROFILE, "/PGM/HC/SyncCR3/Handlers", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMSyncCR3() update handler section.");
1508	STAM_REG(pVM, &pPGM->StatHCSyncCR3HandlerVirtualUpdate, STAMTYPE_PROFILE, "/PGM/HC/SyncCR3/Handlers/VirtualUpdate",STAMUNIT_TICKS_PER_CALL, "Profiling of the virtual handler updates.");
1509	STAM_REG(pVM, &pPGM->StatHCSyncCR3HandlerVirtualReset, STAMTYPE_PROFILE, "/PGM/HC/SyncCR3/Handlers/VirtualReset", STAMUNIT_TICKS_PER_CALL, "Profiling of the virtual handler resets.");
1510	STAM_REG(pVM, &pPGM->StatHCSyncCR3Global, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/Global", STAMUNIT_OCCURENCES, "The number of global CR3 syncs.");
1511	STAM_REG(pVM, &pPGM->StatHCSyncCR3NotGlobal, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/NotGlobal", STAMUNIT_OCCURENCES, "The number of non-global CR3 syncs.");
1512	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstCacheHit, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstChacheHit", STAMUNIT_OCCURENCES, "The number of times we got some kind of a cache hit.");
1513	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstFreed, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstFreed", STAMUNIT_OCCURENCES, "The number of times we've had to free a shadow entry.");
1514	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstFreedSrcNP, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstFreedSrcNP", STAMUNIT_OCCURENCES, "The number of times we've had to free a shadow entry for which the source entry was not present.");
1515	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstNotPresent, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstNotPresent", STAMUNIT_OCCURENCES, "The number of times we've encountered a not present shadow entry for a present guest entry.");
1516	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstSkippedGlobalPD, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstSkippedGlobalPD", STAMUNIT_OCCURENCES, "The number of times a global page directory wasn't flushed.");
1517	STAM_REG(pVM, &pPGM->StatHCSyncCR3DstSkippedGlobalPT, STAMTYPE_COUNTER, "/PGM/HC/SyncCR3/DstSkippedGlobalPT", STAMUNIT_OCCURENCES, "The number of times a page table with only global entries wasn't flushed.");
1518
1519	STAM_REG(pVM, &pPGM->StatVirtHandleSearchByPhysGC, STAMTYPE_PROFILE, "/PGM/VirtHandler/SearchByPhys/GC", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmHandlerVirtualFindByPhysAddr in GC.");
1520	STAM_REG(pVM, &pPGM->StatVirtHandleSearchByPhysHC, STAMTYPE_PROFILE, "/PGM/VirtHandler/SearchByPhys/HC", STAMUNIT_TICKS_PER_CALL, "Profiling of pgmHandlerVirtualFindByPhysAddr in HC.");
1521	STAM_REG(pVM, &pPGM->StatHandlePhysicalReset, STAMTYPE_COUNTER, "/PGM/HC/HandlerPhysicalReset", STAMUNIT_OCCURENCES, "The number of times PGMR3HandlerPhysicalReset is called.");
1522
1523	STAM_REG(pVM, &pPGM->StatHCGstModifyPage, STAMTYPE_PROFILE, "/PGM/HC/GstModifyPage", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMGstModifyPage() body.");
1524	STAM_REG(pVM, &pPGM->StatGCGstModifyPage, STAMTYPE_PROFILE, "/PGM/GC/GstModifyPage", STAMUNIT_TICKS_PER_CALL, "Profiling of the PGMGstModifyPage() body.");
1525
1526	STAM_REG(pVM, &pPGM->StatSynPT4kGC, STAMTYPE_COUNTER, "/PGM/GC/SyncPT/4k", STAMUNIT_OCCURENCES, "Nr of 4k PT syncs");
1527	STAM_REG(pVM, &pPGM->StatSynPT4kHC, STAMTYPE_COUNTER, "/PGM/HC/SyncPT/4k", STAMUNIT_OCCURENCES, "Nr of 4k PT syncs");
1528	STAM_REG(pVM, &pPGM->StatSynPT4MGC, STAMTYPE_COUNTER, "/PGM/GC/SyncPT/4M", STAMUNIT_OCCURENCES, "Nr of 4M PT syncs");
1529	STAM_REG(pVM, &pPGM->StatSynPT4MHC, STAMTYPE_COUNTER, "/PGM/HC/SyncPT/4M", STAMUNIT_OCCURENCES, "Nr of 4M PT syncs");
1530
1531	STAM_REG(pVM, &pPGM->StatDynRamTotal, STAMTYPE_COUNTER, "/PGM/RAM/TotalAlloc", STAMUNIT_MEGABYTES, "Allocated mbs of guest ram.");
1532	STAM_REG(pVM, &pPGM->StatDynRamGrow, STAMTYPE_COUNTER, "/PGM/RAM/Grow", STAMUNIT_OCCURENCES, "Nr of pgmr3PhysGrowRange calls.");
1533
1534	STAM_REG(pVM, &pPGM->StatPageHCMapTlbHits, STAMTYPE_COUNTER, "/PGM/PageHCMap/TlbHits", STAMUNIT_OCCURENCES, "TLB hits.");
1535	STAM_REG(pVM, &pPGM->StatPageHCMapTlbMisses, STAMTYPE_COUNTER, "/PGM/PageHCMap/TlbMisses", STAMUNIT_OCCURENCES, "TLB misses.");
1536	STAM_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_OCCURENCES, "Number of mapped chunks.");
1537	STAM_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_OCCURENCES, "Maximum number of mapped chunks.");
1538	STAM_REG(pVM, &pPGM->StatChunkR3MapTlbHits, STAMTYPE_COUNTER, "/PGM/ChunkR3Map/TlbHits", STAMUNIT_OCCURENCES, "TLB hits.");
1539	STAM_REG(pVM, &pPGM->StatChunkR3MapTlbMisses, STAMTYPE_COUNTER, "/PGM/ChunkR3Map/TlbMisses", STAMUNIT_OCCURENCES, "TLB misses.");
1540	STAM_REG(pVM, &pPGM->StatPageReplaceShared, STAMTYPE_COUNTER, "/PGM/Page/ReplacedShared", STAMUNIT_OCCURENCES, "Times a shared page was replaced.");
1541	STAM_REG(pVM, &pPGM->StatPageReplaceZero, STAMTYPE_COUNTER, "/PGM/Page/ReplacedZero", STAMUNIT_OCCURENCES, "Times the zero page was replaced.");
1542	STAM_REG(pVM, &pPGM->StatPageHandyAllocs, STAMTYPE_COUNTER, "/PGM/Page/HandyAllocs", STAMUNIT_OCCURENCES, "Number of times we've allocated more handy pages.");
1543	STAM_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_OCCURENCES, "The total number of pages.");
1544	STAM_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_OCCURENCES, "The number of private pages.");
1545	STAM_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_OCCURENCES, "The number of shared pages.");
1546	STAM_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_OCCURENCES, "The number of zero backed pages.");
1547
1548	#ifdef PGMPOOL_WITH_GCPHYS_TRACKING
1549	STAM_REG(pVM, &pPGM->StatTrackVirgin, STAMTYPE_COUNTER, "/PGM/Track/Virgin", STAMUNIT_OCCURENCES, "The number of first time shadowings");
1550	STAM_REG(pVM, &pPGM->StatTrackAliased, STAMTYPE_COUNTER, "/PGM/Track/Aliased", STAMUNIT_OCCURENCES, "The number of times switching to cRef2, i.e. the page is being shadowed by two PTs.");
1551	STAM_REG(pVM, &pPGM->StatTrackAliasedMany, STAMTYPE_COUNTER, "/PGM/Track/AliasedMany", STAMUNIT_OCCURENCES, "The number of times we're tracking using cRef2.");
1552	STAM_REG(pVM, &pPGM->StatTrackAliasedLots, STAMTYPE_COUNTER, "/PGM/Track/AliasedLots", STAMUNIT_OCCURENCES, "The number of times we're hitting pages which has overflowed cRef2");
1553	STAM_REG(pVM, &pPGM->StatTrackOverflows, STAMTYPE_COUNTER, "/PGM/Track/Overflows", STAMUNIT_OCCURENCES, "The number of times the extent list grows to long.");
1554	STAM_REG(pVM, &pPGM->StatTrackDeref, STAMTYPE_PROFILE, "/PGM/Track/Deref", STAMUNIT_OCCURENCES, "Profiling of SyncPageWorkerTrackDeref (expensive).");
1555	#endif
1556
1557	for (unsigned i = 0; i < X86_PG_ENTRIES; i++)
1558	{
1559	/** @todo r=bird: We need a STAMR3RegisterF()! */
1560	char szName[32];
1561
1562	RTStrPrintf(szName, sizeof(szName), "/PGM/GC/PD/Trap0e/%04X", i);
1563	int rc = STAMR3Register(pVM, &pPGM->StatGCTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "The number of traps in page directory n.");
1564	AssertRC(rc);
1565
1566	RTStrPrintf(szName, sizeof(szName), "/PGM/GC/PD/SyncPt/%04X", i);
1567	rc = STAMR3Register(pVM, &pPGM->StatGCSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "The number of syncs per PD n.");
1568	AssertRC(rc);
1569
1570	RTStrPrintf(szName, sizeof(szName), "/PGM/GC/PD/SyncPage/%04X", i);
1571	rc = STAMR3Register(pVM, &pPGM->StatGCSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "The number of out of sync pages per page directory n.");
1572	AssertRC(rc);
1573	}
1574	}
1575	#endif /* VBOX_WITH_STATISTICS */
1576
1577	/**
1578	* Init the PGM bits that rely on VMMR0 and MM to be fully initialized.
1579	*
1580	* The dynamic mapping area will also be allocated and initialized at this
1581	* time. We could allocate it during PGMR3Init of course, but the mapping
1582	* wouldn't be allocated at that time preventing us from setting up the
1583	* page table entries with the dummy page.
1584	*
1585	* @returns VBox status code.
1586	* @param pVM VM handle.
1587	*/
1588	PGMR3DECL(int) PGMR3InitDynMap(PVM pVM)
1589	{
1590	/*
1591	* Reserve space for mapping the paging pages into guest context.
1592	*/
1593	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * (2 + ELEMENTS(pVM->pgm.s.apHCPaePDs) + 1 + 2 + 2), "Paging", &pVM->pgm.s.pGC32BitPD);
1594	AssertRCReturn(rc, rc);
1595	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1596
1597	/*
1598	* Reserve space for the dynamic mappings.
1599	*/
1600	/** @todo r=bird: Need to verify that the checks for crossing PTs are correct here. They seems to be assuming 4MB PTs.. */
1601	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping", &pVM->pgm.s.pbDynPageMapBaseGC);
1602	if ( VBOX_SUCCESS(rc)
1603	&& (pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_SHIFT) != ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_SHIFT))
1604	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping not crossing", &pVM->pgm.s.pbDynPageMapBaseGC);
1605	if (VBOX_SUCCESS(rc))
1606	{
1607	AssertRelease((pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_SHIFT) == ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_SHIFT));
1608	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1609	}
1610	return rc;
1611	}
1612
1613
1614	/**
1615	* Ring-3 init finalizing.
1616	*
1617	* @returns VBox status code.
1618	* @param pVM The VM handle.
1619	*/
1620	PGMR3DECL(int) PGMR3InitFinalize(PVM pVM)
1621	{
1622	/*
1623	* Map the paging pages into the guest context.
1624	*/
1625	RTGCPTR GCPtr = pVM->pgm.s.pGC32BitPD;
1626	AssertReleaseReturn(GCPtr, VERR_INTERNAL_ERROR);
1627
1628	int rc = PGMMap(pVM, GCPtr, pVM->pgm.s.HCPhys32BitPD, PAGE_SIZE, 0);
1629	AssertRCReturn(rc, rc);
1630	pVM->pgm.s.pGC32BitPD = GCPtr;
1631	GCPtr += PAGE_SIZE;
1632	GCPtr += PAGE_SIZE; /* reserved page */
1633
1634	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.apHCPaePDs); i++)
1635	{
1636	rc = PGMMap(pVM, GCPtr, pVM->pgm.s.aHCPhysPaePDs[i], PAGE_SIZE, 0);
1637	AssertRCReturn(rc, rc);
1638	pVM->pgm.s.apGCPaePDs[i] = GCPtr;
1639	GCPtr += PAGE_SIZE;
1640	}
1641	/* A bit of paranoia is justified. */
1642	AssertRelease((RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[0] + PAGE_SIZE == (RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[1]);
1643	AssertRelease((RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[1] + PAGE_SIZE == (RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[2]);
1644	AssertRelease((RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[2] + PAGE_SIZE == (RTGCUINTPTR)pVM->pgm.s.apGCPaePDs[3]);
1645	GCPtr += PAGE_SIZE; /* reserved page */
1646
1647	rc = PGMMap(pVM, GCPtr, pVM->pgm.s.HCPhysPaePDPT, PAGE_SIZE, 0);
1648	AssertRCReturn(rc, rc);
1649	pVM->pgm.s.pGCPaePDPT = GCPtr;
1650	GCPtr += PAGE_SIZE;
1651	GCPtr += PAGE_SIZE; /* reserved page */
1652
1653
1654	/*
1655	* Reserve space for the dynamic mappings.
1656	* Initialize the dynamic mapping pages with dummy pages to simply the cache.
1657	*/
1658	/* get the pointer to the page table entries. */
1659	PPGMMAPPING pMapping = pgmGetMapping(pVM, pVM->pgm.s.pbDynPageMapBaseGC);
1660	AssertRelease(pMapping);
1661	const uintptr_t off = pVM->pgm.s.pbDynPageMapBaseGC - pMapping->GCPtr;
1662	const unsigned iPT = off >> X86_PD_SHIFT;
1663	const unsigned iPG = (off >> X86_PT_SHIFT) & X86_PT_MASK;
1664	pVM->pgm.s.paDynPageMap32BitPTEsGC = pMapping->aPTs[iPT].pPTGC + iPG * sizeof(pMapping->aPTs[0].pPTR3->a[0]);
1665	pVM->pgm.s.paDynPageMapPaePTEsGC = pMapping->aPTs[iPT].paPaePTsGC + iPG * sizeof(pMapping->aPTs[0].paPaePTsR3->a[0]);
1666
1667	/* init cache */
1668	RTHCPHYS HCPhysDummy = MMR3PageDummyHCPhys(pVM);
1669	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache); i++)
1670	pVM->pgm.s.aHCPhysDynPageMapCache[i] = HCPhysDummy;
1671
1672	for (unsigned i = 0; i < MM_HYPER_DYNAMIC_SIZE; i += PAGE_SIZE)
1673	{
1674	rc = PGMMap(pVM, pVM->pgm.s.pbDynPageMapBaseGC + i, HCPhysDummy, PAGE_SIZE, 0);
1675	AssertRCReturn(rc, rc);
1676	}
1677
1678	return rc;
1679	}
1680
1681
1682	/**
1683	* Applies relocations to data and code managed by this
1684	* component. This function will be called at init and
1685	* whenever the VMM need to relocate it self inside the GC.
1686	*
1687	* @param pVM The VM.
1688	* @param offDelta Relocation delta relative to old location.
1689	*/
1690	PGMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1691	{
1692	LogFlow(("PGMR3Relocate\n"));
1693
1694	/*
1695	* Paging stuff.
1696	*/
1697	pVM->pgm.s.GCPtrCR3Mapping += offDelta;
1698	/** @todo move this into shadow and guest specific relocation functions. */
1699	AssertMsg(pVM->pgm.s.pGC32BitPD, ("Init order, no relocation before paging is initialized!\n"));
1700	pVM->pgm.s.pGC32BitPD += offDelta;
1701	pVM->pgm.s.pGuestPDGC += offDelta;
1702	AssertCompile(ELEMENTS(pVM->pgm.s.apGCPaePDs) == ELEMENTS(pVM->pgm.s.apGstPaePDsGC));
1703	for (unsigned i = 0; i < ELEMENTS(pVM->pgm.s.apGCPaePDs); i++)
1704	{
1705	pVM->pgm.s.apGCPaePDs[i] += offDelta;
1706	pVM->pgm.s.apGstPaePDsGC[i] += offDelta;
1707	}
1708	pVM->pgm.s.pGstPaePDPTGC += offDelta;
1709	pVM->pgm.s.pGCPaePDPT += offDelta;
1710
1711	pgmR3ModeDataInit(pVM, true /* resolve GC/R0 symbols */);
1712	pgmR3ModeDataSwitch(pVM, pVM->pgm.s.enmShadowMode, pVM->pgm.s.enmGuestMode);
1713
1714	PGM_SHW_PFN(Relocate, pVM)(pVM, offDelta);
1715	PGM_GST_PFN(Relocate, pVM)(pVM, offDelta);
1716	PGM_BTH_PFN(Relocate, pVM)(pVM, offDelta);
1717
1718	/*
1719	* Trees.
1720	*/
1721	pVM->pgm.s.pTreesGC = MMHyperHC2GC(pVM, pVM->pgm.s.pTreesHC);
1722
1723	/*
1724	* Ram ranges.
1725	*/
1726	if (pVM->pgm.s.pRamRangesR3)
1727	{
1728	pVM->pgm.s.pRamRangesGC = MMHyperHC2GC(pVM, pVM->pgm.s.pRamRangesR3);
1729	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesR3; pCur->pNextR3; pCur = pCur->pNextR3)
1730	#ifdef VBOX_WITH_NEW_PHYS_CODE
1731	pCur->pNextGC = MMHyperR3ToGC(pVM, pCur->pNextR3);
1732	#else
1733	{
1734	pCur->pNextGC = MMHyperR3ToGC(pVM, pCur->pNextR3);
1735	if (pCur->pavHCChunkGC)
1736	pCur->pavHCChunkGC = MMHyperHC2GC(pVM, pCur->pavHCChunkHC);
1737	}
1738	#endif
1739	}
1740
1741	/*
1742	* Update the two page directories with all page table mappings.
1743	* (One or more of them have changed, that's why we're here.)
1744	*/
1745	pVM->pgm.s.pMappingsGC = MMHyperHC2GC(pVM, pVM->pgm.s.pMappingsR3);
1746	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur->pNextR3; pCur = pCur->pNextR3)
1747	pCur->pNextGC = MMHyperHC2GC(pVM, pCur->pNextR3);
1748
1749	/* Relocate GC addresses of Page Tables. */
1750	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
1751	{
1752	for (RTHCUINT i = 0; i < pCur->cPTs; i++)
1753	{
1754	pCur->aPTs[i].pPTGC = MMHyperR3ToGC(pVM, pCur->aPTs[i].pPTR3);
1755	pCur->aPTs[i].paPaePTsGC = MMHyperR3ToGC(pVM, pCur->aPTs[i].paPaePTsR3);
1756	}
1757	}
1758
1759	/*
1760	* Dynamic page mapping area.
1761	*/
1762	pVM->pgm.s.paDynPageMap32BitPTEsGC += offDelta;
1763	pVM->pgm.s.paDynPageMapPaePTEsGC += offDelta;
1764	pVM->pgm.s.pbDynPageMapBaseGC += offDelta;
1765
1766	/*
1767	* The Zero page.
1768	*/
1769	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1770	AssertRelease(pVM->pgm.s.pvZeroPgR0);
1771
1772	/*
1773	* Physical and virtual handlers.
1774	*/
1775	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesHC->PhysHandlers, true, pgmR3RelocatePhysHandler, &offDelta);
1776	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesHC->VirtHandlers, true, pgmR3RelocateVirtHandler, &offDelta);
1777	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesHC->HyperVirtHandlers, true, pgmR3RelocateHyperVirtHandler, &offDelta);
1778
1779	/*
1780	* The page pool.
1781	*/
1782	pgmR3PoolRelocate(pVM);
1783	}
1784
1785
1786	/**
1787	* Callback function for relocating a physical access handler.
1788	*
1789	* @returns 0 (continue enum)
1790	* @param pNode Pointer to a PGMPHYSHANDLER node.
1791	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
1792	* not certain the delta will fit in a void pointer for all possible configs.
1793	*/
1794	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser)
1795	{
1796	PPGMPHYSHANDLER pHandler = (PPGMPHYSHANDLER)pNode;
1797	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
1798	if (pHandler->pfnHandlerGC)
1799	pHandler->pfnHandlerGC += offDelta;
1800	if ((RTGCUINTPTR)pHandler->pvUserGC >= 0x10000)
1801	pHandler->pvUserGC += offDelta;
1802	return 0;
1803	}
1804
1805
1806	/**
1807	* Callback function for relocating a virtual access handler.
1808	*
1809	* @returns 0 (continue enum)
1810	* @param pNode Pointer to a PGMVIRTHANDLER node.
1811	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
1812	* not certain the delta will fit in a void pointer for all possible configs.
1813	*/
1814	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
1815	{
1816	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
1817	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
1818	Assert( pHandler->enmType == PGMVIRTHANDLERTYPE_ALL
1819	\|\| pHandler->enmType == PGMVIRTHANDLERTYPE_WRITE);
1820	Assert(pHandler->pfnHandlerGC);
1821	pHandler->pfnHandlerGC += offDelta;
1822	return 0;
1823	}
1824
1825
1826	/**
1827	* Callback function for relocating a virtual access handler for the hypervisor mapping.
1828	*
1829	* @returns 0 (continue enum)
1830	* @param pNode Pointer to a PGMVIRTHANDLER node.
1831	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
1832	* not certain the delta will fit in a void pointer for all possible configs.
1833	*/
1834	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
1835	{
1836	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
1837	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
1838	Assert(pHandler->enmType == PGMVIRTHANDLERTYPE_HYPERVISOR);
1839	Assert(pHandler->pfnHandlerGC);
1840	pHandler->pfnHandlerGC += offDelta;
1841	return 0;
1842	}
1843
1844
1845	/**
1846	* The VM is being reset.
1847	*
1848	* For the PGM component this means that any PD write monitors
1849	* needs to be removed.
1850	*
1851	* @param pVM VM handle.
1852	*/
1853	PGMR3DECL(void) PGMR3Reset(PVM pVM)
1854	{
1855	LogFlow(("PGMR3Reset:\n"));
1856	VM_ASSERT_EMT(pVM);
1857
1858	pgmLock(pVM);
1859
1860	/*
1861	* Unfix any fixed mappings and disable CR3 monitoring.
1862	*/
1863	pVM->pgm.s.fMappingsFixed = false;
1864	pVM->pgm.s.GCPtrMappingFixed = 0;
1865	pVM->pgm.s.cbMappingFixed = 0;
1866
1867	int rc = PGM_GST_PFN(UnmonitorCR3, pVM)(pVM);
1868	AssertRC(rc);
1869	#ifdef DEBUG
1870	DBGFR3InfoLog(pVM, "mappings", NULL);
1871	DBGFR3InfoLog(pVM, "handlers", "all nostat");
1872	#endif
1873
1874	/*
1875	* Reset the shadow page pool.
1876	*/
1877	pgmR3PoolReset(pVM);
1878
1879	/*
1880	* Re-init other members.
1881	*/
1882	pVM->pgm.s.fA20Enabled = true;
1883
1884	/*
1885	* Clear the FFs PGM owns.
1886	*/
1887	VM_FF_CLEAR(pVM, VM_FF_PGM_SYNC_CR3);
1888	VM_FF_CLEAR(pVM, VM_FF_PGM_SYNC_CR3_NON_GLOBAL);
1889
1890	/*
1891	* Reset (zero) RAM pages.
1892	*/
1893	rc = pgmR3PhysRamReset(pVM);
1894	if (RT_SUCCESS(rc))
1895	{
1896	#ifdef VBOX_WITH_NEW_PHYS_CODE
1897	/*
1898	* Reset (zero) shadow ROM pages.
1899	*/
1900	rc = pgmR3PhysRomReset(pVM);
1901	#endif
1902	if (RT_SUCCESS(rc))
1903	{
1904	/*
1905	* Switch mode back to real mode.
1906	*/
1907	rc = PGMR3ChangeMode(pVM, PGMMODE_REAL);
1908	STAM_REL_COUNTER_RESET(&pVM->pgm.s.cGuestModeChanges);
1909	}
1910	}
1911
1912	pgmUnlock(pVM);
1913	//return rc;
1914	AssertReleaseRC(rc);
1915	}
1916
1917
1918	#ifdef VBOX_STRICT
1919	/**
1920	* VM state change callback for clearing fNoMorePhysWrites after
1921	* a snapshot has been created.
1922	*/
1923	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
1924	{
1925	if (enmState == VMSTATE_RUNNING)
1926	pVM->pgm.s.fNoMorePhysWrites = false;
1927	}
1928	#endif
1929
1930
1931	/**
1932	* Terminates the PGM.
1933	*
1934	* @returns VBox status code.
1935	* @param pVM Pointer to VM structure.
1936	*/
1937	PGMR3DECL(int) PGMR3Term(PVM pVM)
1938	{
1939	return PDMR3CritSectDelete(&pVM->pgm.s.CritSect);
1940	}
1941
1942
1943	/**
1944	* Execute state save operation.
1945	*
1946	* @returns VBox status code.
1947	* @param pVM VM Handle.
1948	* @param pSSM SSM operation handle.
1949	*/
1950	static DECLCALLBACK(int) pgmR3Save(PVM pVM, PSSMHANDLE pSSM)
1951	{
1952	PPGM pPGM = &pVM->pgm.s;
1953
1954	/* No more writes to physical memory after this point! */
1955	pVM->pgm.s.fNoMorePhysWrites = true;
1956
1957	/*
1958	* Save basic data (required / unaffected by relocation).
1959	*/
1960	#if 1
1961	SSMR3PutBool(pSSM, pPGM->fMappingsFixed);
1962	#else
1963	SSMR3PutUInt(pSSM, pPGM->fMappingsFixed);
1964	#endif
1965	SSMR3PutGCPtr(pSSM, pPGM->GCPtrMappingFixed);
1966	SSMR3PutU32(pSSM, pPGM->cbMappingFixed);
1967	SSMR3PutUInt(pSSM, pPGM->cbRamSize);
1968	SSMR3PutGCPhys(pSSM, pPGM->GCPhysA20Mask);
1969	SSMR3PutUInt(pSSM, pPGM->fA20Enabled);
1970	SSMR3PutUInt(pSSM, pPGM->fSyncFlags);
1971	SSMR3PutUInt(pSSM, pPGM->enmGuestMode);
1972	SSMR3PutU32(pSSM, ~0); /* Separator. */
1973
1974	/*
1975	* The guest mappings.
1976	*/
1977	uint32_t i = 0;
1978	for (PPGMMAPPING pMapping = pPGM->pMappingsR3; pMapping; pMapping = pMapping->pNextR3, i++)
1979	{
1980	SSMR3PutU32(pSSM, i);
1981	SSMR3PutStrZ(pSSM, pMapping->pszDesc); /* This is the best unique id we have... */
1982	SSMR3PutGCPtr(pSSM, pMapping->GCPtr);
1983	SSMR3PutGCUIntPtr(pSSM, pMapping->cPTs);
1984	/* flags are done by the mapping owners! */
1985	}
1986	SSMR3PutU32(pSSM, ~0); /* terminator. */
1987
1988	/*
1989	* Ram range flags and bits.
1990	*/
1991	i = 0;
1992	for (PPGMRAMRANGE pRam = pPGM->pRamRangesR3; pRam; pRam = pRam->pNextR3, i++)
1993	{
1994	/** @todo MMIO ranges may move (PCI reconfig), we currently assume they don't. */
1995
1996	SSMR3PutU32(pSSM, i);
1997	SSMR3PutGCPhys(pSSM, pRam->GCPhys);
1998	SSMR3PutGCPhys(pSSM, pRam->GCPhysLast);
1999	SSMR3PutGCPhys(pSSM, pRam->cb);
2000	SSMR3PutU8(pSSM, !!pRam->pvHC); /* boolean indicating memory or not. */
2001
2002	/* Flags. */
2003	const unsigned cPages = pRam->cb >> PAGE_SHIFT;
2004	for (unsigned iPage = 0; iPage < cPages; iPage++)
2005	SSMR3PutU16(pSSM, (uint16_t)(pRam->aPages[iPage].HCPhys & ~X86_PTE_PAE_PG_MASK)); /** @todo PAGE FLAGS */
2006
2007	/* any memory associated with the range. */
2008	if (pRam->fFlags & MM_RAM_FLAGS_DYNAMIC_ALLOC)
2009	{
2010	for (unsigned iChunk = 0; iChunk < (pRam->cb >> PGM_DYNAMIC_CHUNK_SHIFT); iChunk++)
2011	{
2012	if (pRam->pavHCChunkHC[iChunk])
2013	{
2014	SSMR3PutU8(pSSM, 1); /* chunk present */
2015	SSMR3PutMem(pSSM, pRam->pavHCChunkHC[iChunk], PGM_DYNAMIC_CHUNK_SIZE);
2016	}
2017	else
2018	SSMR3PutU8(pSSM, 0); /* no chunk present */
2019	}
2020	}
2021	else if (pRam->pvHC)
2022	{
2023	int rc = SSMR3PutMem(pSSM, pRam->pvHC, pRam->cb);
2024	if (VBOX_FAILURE(rc))
2025	{
2026	Log(("pgmR3Save: SSMR3PutMem(, %p, %#x) -> %Vrc\n", pRam->pvHC, pRam->cb, rc));
2027	return rc;
2028	}
2029	}
2030	}
2031	return SSMR3PutU32(pSSM, ~0); /* terminator. */
2032	}
2033
2034
2035	/**
2036	* Execute state load operation.
2037	*
2038	* @returns VBox status code.
2039	* @param pVM VM Handle.
2040	* @param pSSM SSM operation handle.
2041	* @param u32Version Data layout version.
2042	*/
2043	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
2044	{
2045	/*
2046	* Validate version.
2047	*/
2048	if (u32Version != PGM_SAVED_STATE_VERSION)
2049	{
2050	Log(("pgmR3Load: Invalid version u32Version=%d (current %d)!\n", u32Version, PGM_SAVED_STATE_VERSION));
2051	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2052	}
2053
2054	/*
2055	* Call the reset function to make sure all the memory is cleared.
2056	*/
2057	PGMR3Reset(pVM);
2058
2059	/*
2060	* Load basic data (required / unaffected by relocation).
2061	*/
2062	PPGM pPGM = &pVM->pgm.s;
2063	#if 1
2064	SSMR3GetBool(pSSM, &pPGM->fMappingsFixed);
2065	#else
2066	uint32_t u;
2067	SSMR3GetU32(pSSM, &u);
2068	pPGM->fMappingsFixed = u;
2069	#endif
2070	SSMR3GetGCPtr(pSSM, &pPGM->GCPtrMappingFixed);
2071	SSMR3GetU32(pSSM, &pPGM->cbMappingFixed);
2072
2073	RTUINT cbRamSize;
2074	int rc = SSMR3GetU32(pSSM, &cbRamSize);
2075	if (VBOX_FAILURE(rc))
2076	return rc;
2077	if (cbRamSize != pPGM->cbRamSize)
2078	return VERR_SSM_LOAD_MEMORY_SIZE_MISMATCH;
2079	SSMR3GetGCPhys(pSSM, &pPGM->GCPhysA20Mask);
2080	SSMR3GetUInt(pSSM, &pPGM->fA20Enabled);
2081	SSMR3GetUInt(pSSM, &pPGM->fSyncFlags);
2082	RTUINT uGuestMode;
2083	SSMR3GetUInt(pSSM, &uGuestMode);
2084	pPGM->enmGuestMode = (PGMMODE)uGuestMode;
2085
2086	/* check separator. */
2087	uint32_t u32Sep;
2088	SSMR3GetU32(pSSM, &u32Sep);
2089	if (VBOX_FAILURE(rc))
2090	return rc;
2091	if (u32Sep != (uint32_t)~0)
2092	{
2093	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
2094	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2095	}
2096
2097	/*
2098	* The guest mappings.
2099	*/
2100	uint32_t i = 0;
2101	for (;; i++)
2102	{
2103	/* Check the seqence number / separator. */
2104	rc = SSMR3GetU32(pSSM, &u32Sep);
2105	if (VBOX_FAILURE(rc))
2106	return rc;
2107	if (u32Sep == ~0U)
2108	break;
2109	if (u32Sep != i)
2110	{
2111	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2112	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2113	}
2114
2115	/* get the mapping details. */
2116	char szDesc[256];
2117	szDesc[0] = '\0';
2118	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2119	if (VBOX_FAILURE(rc))
2120	return rc;
2121	RTGCPTR GCPtr;
2122	SSMR3GetGCPtr(pSSM, &GCPtr);
2123	RTGCUINTPTR cPTs;
2124	rc = SSMR3GetU32(pSSM, &cPTs);
2125	if (VBOX_FAILURE(rc))
2126	return rc;
2127
2128	/* find matching range. */
2129	PPGMMAPPING pMapping;
2130	for (pMapping = pPGM->pMappingsR3; pMapping; pMapping = pMapping->pNextR3)
2131	if ( pMapping->cPTs == cPTs
2132	&& !strcmp(pMapping->pszDesc, szDesc))
2133	break;
2134	if (!pMapping)
2135	{
2136	LogRel(("Couldn't find mapping: cPTs=%#x szDesc=%s (GCPtr=%VGv)\n",
2137	cPTs, szDesc, GCPtr));
2138	AssertFailed();
2139	return VERR_SSM_LOAD_CONFIG_MISMATCH;
2140	}
2141
2142	/* relocate it. */
2143	if (pMapping->GCPtr != GCPtr)
2144	{
2145	AssertMsg((GCPtr >> X86_PD_SHIFT << X86_PD_SHIFT) == GCPtr, ("GCPtr=%VGv\n", GCPtr));
2146	#if HC_ARCH_BITS == 64
2147	LogRel(("Mapping: %VGv -> %VGv %s\n", pMapping->GCPtr, GCPtr, pMapping->pszDesc));
2148	#endif
2149	pgmR3MapRelocate(pVM, pMapping, pMapping->GCPtr, GCPtr);
2150	}
2151	else
2152	Log(("pgmR3Load: '%s' needed no relocation (%VGv)\n", szDesc, GCPtr));
2153	}
2154
2155	/*
2156	* Ram range flags and bits.
2157	*/
2158	i = 0;
2159	for (PPGMRAMRANGE pRam = pPGM->pRamRangesR3; pRam; pRam = pRam->pNextR3, i++)
2160	{
2161	/** @todo MMIO ranges may move (PCI reconfig), we currently assume they don't. */
2162	/* Check the seqence number / separator. */
2163	rc = SSMR3GetU32(pSSM, &u32Sep);
2164	if (VBOX_FAILURE(rc))
2165	return rc;
2166	if (u32Sep == ~0U)
2167	break;
2168	if (u32Sep != i)
2169	{
2170	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2171	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2172	}
2173
2174	/* Get the range details. */
2175	RTGCPHYS GCPhys;
2176	SSMR3GetGCPhys(pSSM, &GCPhys);
2177	RTGCPHYS GCPhysLast;
2178	SSMR3GetGCPhys(pSSM, &GCPhysLast);
2179	RTGCPHYS cb;
2180	SSMR3GetGCPhys(pSSM, &cb);
2181	uint8_t fHaveBits;
2182	rc = SSMR3GetU8(pSSM, &fHaveBits);
2183	if (VBOX_FAILURE(rc))
2184	return rc;
2185	if (fHaveBits & ~1)
2186	{
2187	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2188	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2189	}
2190
2191	/* Match it up with the current range. */
2192	if ( GCPhys != pRam->GCPhys
2193	\|\| GCPhysLast != pRam->GCPhysLast
2194	\|\| cb != pRam->cb
2195	\|\| fHaveBits != !!pRam->pvHC)
2196	{
2197	LogRel(("Ram range: %VGp-%VGp %VGp bytes %s\n"
2198	"State : %VGp-%VGp %VGp bytes %s\n",
2199	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvHC ? "bits" : "nobits",
2200	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits"));
2201	/*
2202	* If we're loading a state for debugging purpose, don't make a fuss if
2203	* the MMIO[2] and ROM stuff isn't 100% right, just skip the mismatches.
2204	*/
2205	if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
2206	\|\| GCPhys < 8 * _1M)
2207	AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH);
2208
2209	RTGCPHYS cPages = ((GCPhysLast - GCPhys) + 1) >> PAGE_SHIFT;
2210	while (cPages-- > 0)
2211	{
2212	uint16_t u16Ignore;
2213	SSMR3GetU16(pSSM, &u16Ignore);
2214	}
2215	continue;
2216	}
2217
2218	/* Flags. */
2219	const unsigned cPages = pRam->cb >> PAGE_SHIFT;
2220	for (unsigned iPage = 0; iPage < cPages; iPage++)
2221	{
2222	uint16_t u16 = 0;
2223	SSMR3GetU16(pSSM, &u16);
2224	u16 &= PAGE_OFFSET_MASK & ~( RT_BIT(4) \| RT_BIT(5) \| RT_BIT(6)
2225	\| RT_BIT(7) \| RT_BIT(8) \| RT_BIT(9) \| RT_BIT(10) );
2226	// &= MM_RAM_FLAGS_DYNAMIC_ALLOC \| MM_RAM_FLAGS_RESERVED \| MM_RAM_FLAGS_ROM \| MM_RAM_FLAGS_MMIO \| MM_RAM_FLAGS_MMIO2
2227	pRam->aPages[iPage].HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) \| (RTHCPHYS)u16; /** @todo PAGE FLAGS */
2228	}
2229
2230	/* any memory associated with the range. */
2231	if (pRam->fFlags & MM_RAM_FLAGS_DYNAMIC_ALLOC)
2232	{
2233	for (unsigned iChunk = 0; iChunk < (pRam->cb >> PGM_DYNAMIC_CHUNK_SHIFT); iChunk++)
2234	{
2235	uint8_t fValidChunk;
2236
2237	rc = SSMR3GetU8(pSSM, &fValidChunk);
2238	if (VBOX_FAILURE(rc))
2239	return rc;
2240	if (fValidChunk > 1)
2241	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2242
2243	if (fValidChunk)
2244	{
2245	if (!pRam->pavHCChunkHC[iChunk])
2246	{
2247	rc = pgmr3PhysGrowRange(pVM, pRam->GCPhys + iChunk * PGM_DYNAMIC_CHUNK_SIZE);
2248	if (VBOX_FAILURE(rc))
2249	return rc;
2250	}
2251	Assert(pRam->pavHCChunkHC[iChunk]);
2252
2253	SSMR3GetMem(pSSM, pRam->pavHCChunkHC[iChunk], PGM_DYNAMIC_CHUNK_SIZE);
2254	}
2255	/* else nothing to do */
2256	}
2257	}
2258	else if (pRam->pvHC)
2259	{
2260	int rc = SSMR3GetMem(pSSM, pRam->pvHC, pRam->cb);
2261	if (VBOX_FAILURE(rc))
2262	{
2263	Log(("pgmR3Save: SSMR3GetMem(, %p, %#x) -> %Vrc\n", pRam->pvHC, pRam->cb, rc));
2264	return rc;
2265	}
2266	}
2267	}
2268
2269	/*
2270	* We require a full resync now.
2271	*/
2272	VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3_NON_GLOBAL);
2273	VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3);
2274	pPGM->fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
2275	pPGM->fPhysCacheFlushPending = true;
2276	pgmR3HandlerPhysicalUpdateAll(pVM);
2277
2278	/*
2279	* Change the paging mode.
2280	*/
2281	return PGMR3ChangeMode(pVM, pPGM->enmGuestMode);
2282	}
2283
2284
2285	/**
2286	* Show paging mode.
2287	*
2288	* @param pVM VM Handle.
2289	* @param pHlp The info helpers.
2290	* @param pszArgs "all" (default), "guest", "shadow" or "host".
2291	*/
2292	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2293	{
2294	/* digest argument. */
2295	bool fGuest, fShadow, fHost;
2296	if (pszArgs)
2297	pszArgs = RTStrStripL(pszArgs);
2298	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
2299	fShadow = fHost = fGuest = true;
2300	else
2301	{
2302	fShadow = fHost = fGuest = false;
2303	if (strstr(pszArgs, "guest"))
2304	fGuest = true;
2305	if (strstr(pszArgs, "shadow"))
2306	fShadow = true;
2307	if (strstr(pszArgs, "host"))
2308	fHost = true;
2309	}
2310
2311	/* print info. */
2312	if (fGuest)
2313	pHlp->pfnPrintf(pHlp, "Guest paging mode: %s, changed %RU64 times, A20 %s\n",
2314	PGMGetModeName(pVM->pgm.s.enmGuestMode), pVM->pgm.s.cGuestModeChanges.c,
2315	pVM->pgm.s.fA20Enabled ? "enabled" : "disabled");
2316	if (fShadow)
2317	pHlp->pfnPrintf(pHlp, "Shadow paging mode: %s\n", PGMGetModeName(pVM->pgm.s.enmShadowMode));
2318	if (fHost)
2319	{
2320	const char *psz;
2321	switch (pVM->pgm.s.enmHostMode)
2322	{
2323	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
2324	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
2325	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
2326	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
2327	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
2328	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
2329	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
2330	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
2331	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
2332	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
2333	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
2334	default: psz = "unknown"; break;
2335	}
2336	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
2337	}
2338	}
2339
2340
2341	/**
2342	* Dump registered MMIO ranges to the log.
2343	*
2344	* @param pVM VM Handle.
2345	* @param pHlp The info helpers.
2346	* @param pszArgs Arguments, ignored.
2347	*/
2348	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2349	{
2350	NOREF(pszArgs);
2351	pHlp->pfnPrintf(pHlp,
2352	"RAM ranges (pVM=%p)\n"
2353	"%.s %.s\n",
2354	pVM,
2355	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
2356	sizeof(RTHCPTR) * 2, "pvHC ");
2357
2358	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesR3; pCur; pCur = pCur->pNextR3)
2359	pHlp->pfnPrintf(pHlp,
2360	"%RGp-%RGp %RHv %s\n",
2361	pCur->GCPhys,
2362	pCur->GCPhysLast,
2363	pCur->pvHC,
2364	pCur->pszDesc);
2365	}
2366
2367	/**
2368	* Dump the page directory to the log.
2369	*
2370	* @param pVM VM Handle.
2371	* @param pHlp The info helpers.
2372	* @param pszArgs Arguments, ignored.
2373	*/
2374	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2375	{
2376	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
2377	/* Big pages supported? */
2378	const bool fPSE = !!(CPUMGetGuestCR4(pVM) & X86_CR4_PSE);
2379	/* Global pages supported? */
2380	const bool fPGE = !!(CPUMGetGuestCR4(pVM) & X86_CR4_PGE);
2381
2382	NOREF(pszArgs);
2383
2384	/*
2385	* Get page directory addresses.
2386	*/
2387	PX86PD pPDSrc = pVM->pgm.s.pGuestPDHC;
2388	Assert(pPDSrc);
2389	Assert(MMPhysGCPhys2HCVirt(pVM, (RTGCPHYS)(CPUMGetGuestCR3(pVM) & X86_CR3_PAGE_MASK), sizeof(*pPDSrc)) == pPDSrc);
2390
2391	/*
2392	* Iterate the page directory.
2393	*/
2394	for (unsigned iPD = 0; iPD < ELEMENTS(pPDSrc->a); iPD++)
2395	{
2396	X86PDE PdeSrc = pPDSrc->a[iPD];
2397	if (PdeSrc.n.u1Present)
2398	{
2399	if (PdeSrc.b.u1Size && fPSE)
2400	{
2401	pHlp->pfnPrintf(pHlp,
2402	"%04X - %VGp P=%d U=%d RW=%d G=%d - BIG\n",
2403	iPD,
2404	PdeSrc.u & X86_PDE_PG_MASK,
2405	PdeSrc.b.u1Present, PdeSrc.b.u1User, PdeSrc.b.u1Write, PdeSrc.b.u1Global && fPGE);
2406	}
2407	else
2408	{
2409	pHlp->pfnPrintf(pHlp,
2410	"%04X - %VGp P=%d U=%d RW=%d [G=%d]\n",
2411	iPD,
2412	PdeSrc.u & X86_PDE4M_PG_MASK,
2413	PdeSrc.n.u1Present, PdeSrc.n.u1User, PdeSrc.n.u1Write, PdeSrc.b.u1Global && fPGE);
2414	}
2415	}
2416	}
2417	}
2418
2419
2420	/**
2421	* Serivce a VMMCALLHOST_PGM_LOCK call.
2422	*
2423	* @returns VBox status code.
2424	* @param pVM The VM handle.
2425	*/
2426	PDMR3DECL(int) PGMR3LockCall(PVM pVM)
2427	{
2428	int rc = PDMR3CritSectEnterEx(&pVM->pgm.s.CritSect, true /* fHostCall */);
2429	AssertRC(rc);
2430	return rc;
2431	}
2432
2433
2434	/**
2435	* Converts a PGMMODE value to a PGM_TYPE_* \#define.
2436	*
2437	* @returns PGM_TYPE_*.
2438	* @param pgmMode The mode value to convert.
2439	*/
2440	DECLINLINE(unsigned) pgmModeToType(PGMMODE pgmMode)
2441	{
2442	switch (pgmMode)
2443	{
2444	case PGMMODE_REAL: return PGM_TYPE_REAL;
2445	case PGMMODE_PROTECTED: return PGM_TYPE_PROT;
2446	case PGMMODE_32_BIT: return PGM_TYPE_32BIT;
2447	case PGMMODE_PAE:
2448	case PGMMODE_PAE_NX: return PGM_TYPE_PAE;
2449	case PGMMODE_AMD64:
2450	case PGMMODE_AMD64_NX: return PGM_TYPE_AMD64;
2451	case PGMMODE_NESTED: return PGM_TYPE_NESTED;
2452	default:
2453	AssertFatalMsgFailed(("pgmMode=%d\n", pgmMode));
2454	}
2455	}
2456
2457
2458	/**
2459	* Gets the index into the paging mode data array of a SHW+GST mode.
2460	*
2461	* @returns PGM::paPagingData index.
2462	* @param uShwType The shadow paging mode type.
2463	* @param uGstType The guest paging mode type.
2464	*/
2465	DECLINLINE(unsigned) pgmModeDataIndex(unsigned uShwType, unsigned uGstType)
2466	{
2467	Assert(uShwType >= PGM_TYPE_32BIT && uShwType <= PGM_TYPE_NESTED);
2468	Assert(uGstType >= PGM_TYPE_REAL && uGstType <= PGM_TYPE_AMD64);
2469	return (uShwType - PGM_TYPE_32BIT) * (PGM_TYPE_AMD64 - PGM_TYPE_REAL + 1)
2470	+ (uGstType - PGM_TYPE_REAL);
2471	}
2472
2473
2474	/**
2475	* Gets the index into the paging mode data array of a SHW+GST mode.
2476	*
2477	* @returns PGM::paPagingData index.
2478	* @param enmShw The shadow paging mode.
2479	* @param enmGst The guest paging mode.
2480	*/
2481	DECLINLINE(unsigned) pgmModeDataIndexByMode(PGMMODE enmShw, PGMMODE enmGst)
2482	{
2483	Assert(enmShw >= PGMMODE_32_BIT && enmShw <= PGMMODE_MAX);
2484	Assert(enmGst > PGMMODE_INVALID && enmGst < PGMMODE_MAX);
2485	return pgmModeDataIndex(pgmModeToType(enmShw), pgmModeToType(enmGst));
2486	}
2487
2488
2489	/**
2490	* Calculates the max data index.
2491	* @returns The number of entries in the paging data array.
2492	*/
2493	DECLINLINE(unsigned) pgmModeDataMaxIndex(void)
2494	{
2495	return pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64) + 1;
2496	}
2497
2498
2499	/**
2500	* Initializes the paging mode data kept in PGM::paModeData.
2501	*
2502	* @param pVM The VM handle.
2503	* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
2504	* This is used early in the init process to avoid trouble with PDM
2505	* not being initialized yet.
2506	*/
2507	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0)
2508	{
2509	PPGMMODEDATA pModeData;
2510	int rc;
2511
2512	/*
2513	* Allocate the array on the first call.
2514	*/
2515	if (!pVM->pgm.s.paModeData)
2516	{
2517	pVM->pgm.s.paModeData = (PPGMMODEDATA)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMMODEDATA) * pgmModeDataMaxIndex());
2518	AssertReturn(pVM->pgm.s.paModeData, VERR_NO_MEMORY);
2519	}
2520
2521	/*
2522	* Initialize the array entries.
2523	*/
2524	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_REAL)];
2525	pModeData->uShwType = PGM_TYPE_32BIT;
2526	pModeData->uGstType = PGM_TYPE_REAL;
2527	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2528	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2529	rc = PGM_BTH_NAME_32BIT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2530
2531	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGMMODE_PROTECTED)];
2532	pModeData->uShwType = PGM_TYPE_32BIT;
2533	pModeData->uGstType = PGM_TYPE_PROT;
2534	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2535	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2536	rc = PGM_BTH_NAME_32BIT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2537
2538	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_32BIT)];
2539	pModeData->uShwType = PGM_TYPE_32BIT;
2540	pModeData->uGstType = PGM_TYPE_32BIT;
2541	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2542	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2543	rc = PGM_BTH_NAME_32BIT_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2544
2545	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_REAL)];
2546	pModeData->uShwType = PGM_TYPE_PAE;
2547	pModeData->uGstType = PGM_TYPE_REAL;
2548	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2549	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2550	rc = PGM_BTH_NAME_PAE_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2551
2552	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PROT)];
2553	pModeData->uShwType = PGM_TYPE_PAE;
2554	pModeData->uGstType = PGM_TYPE_PROT;
2555	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2556	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2557	rc = PGM_BTH_NAME_PAE_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2558
2559	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_32BIT)];
2560	pModeData->uShwType = PGM_TYPE_PAE;
2561	pModeData->uGstType = PGM_TYPE_32BIT;
2562	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2563	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2564	rc = PGM_BTH_NAME_PAE_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2565
2566	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PAE)];
2567	pModeData->uShwType = PGM_TYPE_PAE;
2568	pModeData->uGstType = PGM_TYPE_PAE;
2569	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2570	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2571	rc = PGM_BTH_NAME_PAE_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2572
2573	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_AMD64, PGM_TYPE_AMD64)];
2574	pModeData->uShwType = PGM_TYPE_AMD64;
2575	pModeData->uGstType = PGM_TYPE_AMD64;
2576	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2577	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2578	rc = PGM_BTH_NAME_AMD64_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2579
2580	/* The nested paging mode. */
2581	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_REAL)];
2582	pModeData->uShwType = PGM_TYPE_NESTED;
2583	pModeData->uGstType = PGM_TYPE_REAL;
2584	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2585	rc = PGM_BTH_NAME_NESTED_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2586
2587	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGMMODE_PROTECTED)];
2588	pModeData->uShwType = PGM_TYPE_NESTED;
2589	pModeData->uGstType = PGM_TYPE_PROT;
2590	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2591	rc = PGM_BTH_NAME_NESTED_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2592
2593	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_32BIT)];
2594	pModeData->uShwType = PGM_TYPE_NESTED;
2595	pModeData->uGstType = PGM_TYPE_32BIT;
2596	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2597	rc = PGM_BTH_NAME_NESTED_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2598
2599	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_PAE)];
2600	pModeData->uShwType = PGM_TYPE_NESTED;
2601	pModeData->uGstType = PGM_TYPE_PAE;
2602	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2603	rc = PGM_BTH_NAME_NESTED_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2604
2605	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2606	pModeData->uShwType = PGM_TYPE_NESTED;
2607	pModeData->uGstType = PGM_TYPE_AMD64;
2608	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2609	rc = PGM_BTH_NAME_NESTED_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2610
2611	/* The shadow part of the nested callback mode depends on the host paging mode (AMD-V only). */
2612	switch(pVM->pgm.s.enmHostMode)
2613	{
2614	case SUPPAGINGMODE_32_BIT:
2615	case SUPPAGINGMODE_32_BIT_GLOBAL:
2616	for (unsigned i=PGM_TYPE_REAL;i<=PGM_TYPE_AMD64;i++)
2617	{
2618	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2619	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2620	}
2621	break;
2622
2623	case SUPPAGINGMODE_PAE:
2624	case SUPPAGINGMODE_PAE_NX:
2625	case SUPPAGINGMODE_PAE_GLOBAL:
2626	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2627	for (unsigned i=PGM_TYPE_REAL;i<=PGM_TYPE_AMD64;i++)
2628	{
2629	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2630	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2631	}
2632	break;
2633
2634	case SUPPAGINGMODE_AMD64:
2635	case SUPPAGINGMODE_AMD64_GLOBAL:
2636	case SUPPAGINGMODE_AMD64_NX:
2637	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2638	for (unsigned i=PGM_TYPE_REAL;i<=PGM_TYPE_AMD64;i++)
2639	{
2640	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2641	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2642	}
2643	break;
2644	}
2645	return VINF_SUCCESS;
2646	}
2647
2648
2649	/**
2650	* Switch to different (or relocated in the relocate case) mode data.
2651	*
2652	* @param pVM The VM handle.
2653	* @param enmShw The the shadow paging mode.
2654	* @param enmGst The the guest paging mode.
2655	*/
2656	static void pgmR3ModeDataSwitch(PVM pVM, PGMMODE enmShw, PGMMODE enmGst)
2657	{
2658	PPGMMODEDATA pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndexByMode(enmShw, enmGst)];
2659
2660	Assert(pModeData->uGstType == pgmModeToType(enmGst));
2661	Assert(pModeData->uShwType == pgmModeToType(enmShw));
2662
2663	/* shadow */
2664	pVM->pgm.s.pfnR3ShwRelocate = pModeData->pfnR3ShwRelocate;
2665	pVM->pgm.s.pfnR3ShwExit = pModeData->pfnR3ShwExit;
2666	pVM->pgm.s.pfnR3ShwGetPage = pModeData->pfnR3ShwGetPage;
2667	Assert(pVM->pgm.s.pfnR3ShwGetPage);
2668	pVM->pgm.s.pfnR3ShwModifyPage = pModeData->pfnR3ShwModifyPage;
2669
2670	pVM->pgm.s.pfnGCShwGetPage = pModeData->pfnGCShwGetPage;
2671	pVM->pgm.s.pfnGCShwModifyPage = pModeData->pfnGCShwModifyPage;
2672
2673	pVM->pgm.s.pfnR0ShwGetPage = pModeData->pfnR0ShwGetPage;
2674	pVM->pgm.s.pfnR0ShwModifyPage = pModeData->pfnR0ShwModifyPage;
2675
2676
2677	/* guest */
2678	pVM->pgm.s.pfnR3GstRelocate = pModeData->pfnR3GstRelocate;
2679	pVM->pgm.s.pfnR3GstExit = pModeData->pfnR3GstExit;
2680	pVM->pgm.s.pfnR3GstGetPage = pModeData->pfnR3GstGetPage;
2681	Assert(pVM->pgm.s.pfnR3GstGetPage);
2682	pVM->pgm.s.pfnR3GstModifyPage = pModeData->pfnR3GstModifyPage;
2683	pVM->pgm.s.pfnR3GstGetPDE = pModeData->pfnR3GstGetPDE;
2684	pVM->pgm.s.pfnR3GstMonitorCR3 = pModeData->pfnR3GstMonitorCR3;
2685	pVM->pgm.s.pfnR3GstUnmonitorCR3 = pModeData->pfnR3GstUnmonitorCR3;
2686	pVM->pgm.s.pfnR3GstMapCR3 = pModeData->pfnR3GstMapCR3;
2687	pVM->pgm.s.pfnR3GstUnmapCR3 = pModeData->pfnR3GstUnmapCR3;
2688	pVM->pgm.s.pfnR3GstWriteHandlerCR3 = pModeData->pfnR3GstWriteHandlerCR3;
2689	pVM->pgm.s.pszR3GstWriteHandlerCR3 = pModeData->pszR3GstWriteHandlerCR3;
2690	pVM->pgm.s.pfnR3GstPAEWriteHandlerCR3 = pModeData->pfnR3GstPAEWriteHandlerCR3;
2691	pVM->pgm.s.pszR3GstPAEWriteHandlerCR3 = pModeData->pszR3GstPAEWriteHandlerCR3;
2692
2693	pVM->pgm.s.pfnGCGstGetPage = pModeData->pfnGCGstGetPage;
2694	pVM->pgm.s.pfnGCGstModifyPage = pModeData->pfnGCGstModifyPage;
2695	pVM->pgm.s.pfnGCGstGetPDE = pModeData->pfnGCGstGetPDE;
2696	pVM->pgm.s.pfnGCGstMonitorCR3 = pModeData->pfnGCGstMonitorCR3;
2697	pVM->pgm.s.pfnGCGstUnmonitorCR3 = pModeData->pfnGCGstUnmonitorCR3;
2698	pVM->pgm.s.pfnGCGstMapCR3 = pModeData->pfnGCGstMapCR3;
2699	pVM->pgm.s.pfnGCGstUnmapCR3 = pModeData->pfnGCGstUnmapCR3;
2700	pVM->pgm.s.pfnGCGstWriteHandlerCR3 = pModeData->pfnGCGstWriteHandlerCR3;
2701	pVM->pgm.s.pfnGCGstPAEWriteHandlerCR3 = pModeData->pfnGCGstPAEWriteHandlerCR3;
2702
2703	pVM->pgm.s.pfnR0GstGetPage = pModeData->pfnR0GstGetPage;
2704	pVM->pgm.s.pfnR0GstModifyPage = pModeData->pfnR0GstModifyPage;
2705	pVM->pgm.s.pfnR0GstGetPDE = pModeData->pfnR0GstGetPDE;
2706	pVM->pgm.s.pfnR0GstMonitorCR3 = pModeData->pfnR0GstMonitorCR3;
2707	pVM->pgm.s.pfnR0GstUnmonitorCR3 = pModeData->pfnR0GstUnmonitorCR3;
2708	pVM->pgm.s.pfnR0GstMapCR3 = pModeData->pfnR0GstMapCR3;
2709	pVM->pgm.s.pfnR0GstUnmapCR3 = pModeData->pfnR0GstUnmapCR3;
2710	pVM->pgm.s.pfnR0GstWriteHandlerCR3 = pModeData->pfnR0GstWriteHandlerCR3;
2711	pVM->pgm.s.pfnR0GstPAEWriteHandlerCR3 = pModeData->pfnR0GstPAEWriteHandlerCR3;
2712
2713
2714	/* both */
2715	pVM->pgm.s.pfnR3BthRelocate = pModeData->pfnR3BthRelocate;
2716	pVM->pgm.s.pfnR3BthTrap0eHandler = pModeData->pfnR3BthTrap0eHandler;
2717	pVM->pgm.s.pfnR3BthInvalidatePage = pModeData->pfnR3BthInvalidatePage;
2718	pVM->pgm.s.pfnR3BthSyncCR3 = pModeData->pfnR3BthSyncCR3;
2719	Assert(pVM->pgm.s.pfnR3BthSyncCR3);
2720	pVM->pgm.s.pfnR3BthSyncPage = pModeData->pfnR3BthSyncPage;
2721	pVM->pgm.s.pfnR3BthPrefetchPage = pModeData->pfnR3BthPrefetchPage;
2722	pVM->pgm.s.pfnR3BthVerifyAccessSyncPage = pModeData->pfnR3BthVerifyAccessSyncPage;
2723	#ifdef VBOX_STRICT
2724	pVM->pgm.s.pfnR3BthAssertCR3 = pModeData->pfnR3BthAssertCR3;
2725	#endif
2726
2727	pVM->pgm.s.pfnGCBthTrap0eHandler = pModeData->pfnGCBthTrap0eHandler;
2728	pVM->pgm.s.pfnGCBthInvalidatePage = pModeData->pfnGCBthInvalidatePage;
2729	pVM->pgm.s.pfnGCBthSyncCR3 = pModeData->pfnGCBthSyncCR3;
2730	pVM->pgm.s.pfnGCBthSyncPage = pModeData->pfnGCBthSyncPage;
2731	pVM->pgm.s.pfnGCBthPrefetchPage = pModeData->pfnGCBthPrefetchPage;
2732	pVM->pgm.s.pfnGCBthVerifyAccessSyncPage = pModeData->pfnGCBthVerifyAccessSyncPage;
2733	#ifdef VBOX_STRICT
2734	pVM->pgm.s.pfnGCBthAssertCR3 = pModeData->pfnGCBthAssertCR3;
2735	#endif
2736
2737	pVM->pgm.s.pfnR0BthTrap0eHandler = pModeData->pfnR0BthTrap0eHandler;
2738	pVM->pgm.s.pfnR0BthInvalidatePage = pModeData->pfnR0BthInvalidatePage;
2739	pVM->pgm.s.pfnR0BthSyncCR3 = pModeData->pfnR0BthSyncCR3;
2740	pVM->pgm.s.pfnR0BthSyncPage = pModeData->pfnR0BthSyncPage;
2741	pVM->pgm.s.pfnR0BthPrefetchPage = pModeData->pfnR0BthPrefetchPage;
2742	pVM->pgm.s.pfnR0BthVerifyAccessSyncPage = pModeData->pfnR0BthVerifyAccessSyncPage;
2743	#ifdef VBOX_STRICT
2744	pVM->pgm.s.pfnR0BthAssertCR3 = pModeData->pfnR0BthAssertCR3;
2745	#endif
2746	}
2747
2748
2749	#ifdef DEBUG_bird
2750	#include <stdlib.h> /* getenv() remove me! */
2751	#endif
2752
2753	/**
2754	* Calculates the shadow paging mode.
2755	*
2756	* @returns The shadow paging mode.
2757	* @param pVM VM handle.
2758	* @param enmGuestMode The guest mode.
2759	* @param enmHostMode The host mode.
2760	* @param enmShadowMode The current shadow mode.
2761	* @param penmSwitcher Where to store the switcher to use.
2762	* VMMSWITCHER_INVALID means no change.
2763	*/
2764	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher)
2765	{
2766	VMMSWITCHER enmSwitcher = VMMSWITCHER_INVALID;
2767	switch (enmGuestMode)
2768	{
2769	/*
2770	* When switching to real or protected mode we don't change
2771	* anything since it's likely that we'll switch back pretty soon.
2772	*
2773	* During pgmR3InitPaging we'll end up here with PGMMODE_INVALID
2774	* and is supposed to determin which shadow paging and switcher to
2775	* use during init.
2776	*/
2777	case PGMMODE_REAL:
2778	case PGMMODE_PROTECTED:
2779	if (enmShadowMode != PGMMODE_INVALID)
2780	break; /* (no change) */
2781	switch (enmHostMode)
2782	{
2783	case SUPPAGINGMODE_32_BIT:
2784	case SUPPAGINGMODE_32_BIT_GLOBAL:
2785	enmShadowMode = PGMMODE_32_BIT;
2786	enmSwitcher = VMMSWITCHER_32_TO_32;
2787	break;
2788
2789	case SUPPAGINGMODE_PAE:
2790	case SUPPAGINGMODE_PAE_NX:
2791	case SUPPAGINGMODE_PAE_GLOBAL:
2792	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2793	enmShadowMode = PGMMODE_PAE;
2794	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
2795	#ifdef DEBUG_bird
2796	if (getenv("VBOX_32BIT"))
2797	{
2798	enmShadowMode = PGMMODE_32_BIT;
2799	enmSwitcher = VMMSWITCHER_PAE_TO_32;
2800	}
2801	#endif
2802	break;
2803
2804	case SUPPAGINGMODE_AMD64:
2805	case SUPPAGINGMODE_AMD64_GLOBAL:
2806	case SUPPAGINGMODE_AMD64_NX:
2807	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2808	enmShadowMode = PGMMODE_PAE;
2809	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
2810	break;
2811
2812	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
2813	}
2814	break;
2815
2816	case PGMMODE_32_BIT:
2817	switch (enmHostMode)
2818	{
2819	case SUPPAGINGMODE_32_BIT:
2820	case SUPPAGINGMODE_32_BIT_GLOBAL:
2821	enmShadowMode = PGMMODE_32_BIT;
2822	enmSwitcher = VMMSWITCHER_32_TO_32;
2823	break;
2824
2825	case SUPPAGINGMODE_PAE:
2826	case SUPPAGINGMODE_PAE_NX:
2827	case SUPPAGINGMODE_PAE_GLOBAL:
2828	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2829	enmShadowMode = PGMMODE_PAE;
2830	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
2831	#ifdef DEBUG_bird
2832	if (getenv("VBOX_32BIT"))
2833	{
2834	enmShadowMode = PGMMODE_32_BIT;
2835	enmSwitcher = VMMSWITCHER_PAE_TO_32;
2836	}
2837	#endif
2838	break;
2839
2840	case SUPPAGINGMODE_AMD64:
2841	case SUPPAGINGMODE_AMD64_GLOBAL:
2842	case SUPPAGINGMODE_AMD64_NX:
2843	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2844	enmShadowMode = PGMMODE_PAE;
2845	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
2846	break;
2847
2848	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
2849	}
2850	break;
2851
2852	case PGMMODE_PAE:
2853	case PGMMODE_PAE_NX: /** @todo This might require more switchers and guest+both modes. */
2854	switch (enmHostMode)
2855	{
2856	case SUPPAGINGMODE_32_BIT:
2857	case SUPPAGINGMODE_32_BIT_GLOBAL:
2858	enmShadowMode = PGMMODE_PAE;
2859	enmSwitcher = VMMSWITCHER_32_TO_PAE;
2860	break;
2861
2862	case SUPPAGINGMODE_PAE:
2863	case SUPPAGINGMODE_PAE_NX:
2864	case SUPPAGINGMODE_PAE_GLOBAL:
2865	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2866	enmShadowMode = PGMMODE_PAE;
2867	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
2868	break;
2869
2870	case SUPPAGINGMODE_AMD64:
2871	case SUPPAGINGMODE_AMD64_GLOBAL:
2872	case SUPPAGINGMODE_AMD64_NX:
2873	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2874	enmShadowMode = PGMMODE_PAE;
2875	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
2876	break;
2877
2878	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
2879	}
2880	break;
2881
2882	case PGMMODE_AMD64:
2883	case PGMMODE_AMD64_NX:
2884	switch (enmHostMode)
2885	{
2886	case SUPPAGINGMODE_32_BIT:
2887	case SUPPAGINGMODE_32_BIT_GLOBAL:
2888	enmShadowMode = PGMMODE_PAE;
2889	enmSwitcher = VMMSWITCHER_32_TO_AMD64;
2890	break;
2891
2892	case SUPPAGINGMODE_PAE:
2893	case SUPPAGINGMODE_PAE_NX:
2894	case SUPPAGINGMODE_PAE_GLOBAL:
2895	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2896	enmShadowMode = PGMMODE_PAE;
2897	enmSwitcher = VMMSWITCHER_PAE_TO_AMD64;
2898	break;
2899
2900	case SUPPAGINGMODE_AMD64:
2901	case SUPPAGINGMODE_AMD64_GLOBAL:
2902	case SUPPAGINGMODE_AMD64_NX:
2903	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2904	enmShadowMode = PGMMODE_AMD64;
2905	enmSwitcher = VMMSWITCHER_AMD64_TO_AMD64;
2906	break;
2907
2908	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
2909	}
2910	break;
2911
2912
2913	default:
2914	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
2915	return PGMMODE_INVALID;
2916	}
2917	/* Override the shadow mode is nested paging is active. */
2918	if (HWACCMIsNestedPagingActive(pVM))
2919	enmShadowMode = PGMMODE_NESTED;
2920
2921	*penmSwitcher = enmSwitcher;
2922	return enmShadowMode;
2923	}
2924
2925
2926	/**
2927	* Performs the actual mode change.
2928	* This is called by PGMChangeMode and pgmR3InitPaging().
2929	*
2930	* @returns VBox status code.
2931	* @param pVM VM handle.
2932	* @param enmGuestMode The new guest mode. This is assumed to be different from
2933	* the current mode.
2934	*/
2935	PGMR3DECL(int) PGMR3ChangeMode(PVM pVM, PGMMODE enmGuestMode)
2936	{
2937	LogFlow(("PGMR3ChangeMode: Guest mode: %d -> %d\n", pVM->pgm.s.enmGuestMode, enmGuestMode));
2938	STAM_REL_COUNTER_INC(&pVM->pgm.s.cGuestModeChanges);
2939
2940	/*
2941	* Calc the shadow mode and switcher.
2942	*/
2943	VMMSWITCHER enmSwitcher;
2944	PGMMODE enmShadowMode = pgmR3CalcShadowMode(pVM, enmGuestMode, pVM->pgm.s.enmHostMode, pVM->pgm.s.enmShadowMode, &enmSwitcher);
2945	if (enmSwitcher != VMMSWITCHER_INVALID)
2946	{
2947	/*
2948	* Select new switcher.
2949	*/
2950	int rc = VMMR3SelectSwitcher(pVM, enmSwitcher);
2951	if (VBOX_FAILURE(rc))
2952	{
2953	AssertReleaseMsgFailed(("VMMR3SelectSwitcher(%d) -> %Vrc\n", enmSwitcher, rc));
2954	return rc;
2955	}
2956	}
2957
2958	/*
2959	* Exit old mode(s).
2960	*/
2961	/* shadow */
2962	if (enmShadowMode != pVM->pgm.s.enmShadowMode)
2963	{
2964	LogFlow(("PGMR3ChangeMode: Shadow mode: %d -> %d\n", pVM->pgm.s.enmShadowMode, enmShadowMode));
2965	if (PGM_SHW_PFN(Exit, pVM))
2966	{
2967	int rc = PGM_SHW_PFN(Exit, pVM)(pVM);
2968	if (VBOX_FAILURE(rc))
2969	{
2970	AssertMsgFailed(("Exit failed for shadow mode %d: %Vrc\n", pVM->pgm.s.enmShadowMode, rc));
2971	return rc;
2972	}
2973	}
2974
2975	}
2976
2977	/* guest */
2978	if (PGM_GST_PFN(Exit, pVM))
2979	{
2980	int rc = PGM_GST_PFN(Exit, pVM)(pVM);
2981	if (VBOX_FAILURE(rc))
2982	{
2983	AssertMsgFailed(("Exit failed for guest mode %d: %Vrc\n", pVM->pgm.s.enmGuestMode, rc));
2984	return rc;
2985	}
2986	}
2987
2988	/*
2989	* Load new paging mode data.
2990	*/
2991	pgmR3ModeDataSwitch(pVM, enmShadowMode, enmGuestMode);
2992
2993	/*
2994	* Enter new shadow mode (if changed).
2995	*/
2996	if (enmShadowMode != pVM->pgm.s.enmShadowMode)
2997	{
2998	int rc;
2999	pVM->pgm.s.enmShadowMode = enmShadowMode;
3000	switch (enmShadowMode)
3001	{
3002	case PGMMODE_32_BIT:
3003	rc = PGM_SHW_NAME_32BIT(Enter)(pVM);
3004	break;
3005	case PGMMODE_PAE:
3006	case PGMMODE_PAE_NX:
3007	rc = PGM_SHW_NAME_PAE(Enter)(pVM);
3008	break;
3009	case PGMMODE_AMD64:
3010	case PGMMODE_AMD64_NX:
3011	rc = PGM_SHW_NAME_AMD64(Enter)(pVM);
3012	break;
3013	case PGMMODE_NESTED:
3014	rc = PGM_SHW_NAME_NESTED(Enter)(pVM);
3015	break;
3016	case PGMMODE_REAL:
3017	case PGMMODE_PROTECTED:
3018	default:
3019	AssertReleaseMsgFailed(("enmShadowMode=%d\n", enmShadowMode));
3020	return VERR_INTERNAL_ERROR;
3021	}
3022	if (VBOX_FAILURE(rc))
3023	{
3024	AssertReleaseMsgFailed(("Entering enmShadowMode=%d failed: %Vrc\n", enmShadowMode, rc));
3025	pVM->pgm.s.enmShadowMode = PGMMODE_INVALID;
3026	return rc;
3027	}
3028	}
3029
3030	/*
3031	* Enter the new guest and shadow+guest modes.
3032	*/
3033	int rc = -1;
3034	int rc2 = -1;
3035	RTGCPHYS GCPhysCR3 = NIL_RTGCPHYS;
3036	pVM->pgm.s.enmGuestMode = enmGuestMode;
3037	switch (enmGuestMode)
3038	{
3039	case PGMMODE_REAL:
3040	rc = PGM_GST_NAME_REAL(Enter)(pVM, NIL_RTGCPHYS);
3041	switch (pVM->pgm.s.enmShadowMode)
3042	{
3043	case PGMMODE_32_BIT:
3044	rc2 = PGM_BTH_NAME_32BIT_REAL(Enter)(pVM, NIL_RTGCPHYS);
3045	break;
3046	case PGMMODE_PAE:
3047	case PGMMODE_PAE_NX:
3048	rc2 = PGM_BTH_NAME_PAE_REAL(Enter)(pVM, NIL_RTGCPHYS);
3049	break;
3050	case PGMMODE_NESTED:
3051	rc2 = PGM_BTH_NAME_NESTED_REAL(Enter)(pVM, NIL_RTGCPHYS);
3052	break;
3053	case PGMMODE_AMD64:
3054	case PGMMODE_AMD64_NX:
3055	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3056	default: AssertFailed(); break;
3057	}
3058	break;
3059
3060	case PGMMODE_PROTECTED:
3061	rc = PGM_GST_NAME_PROT(Enter)(pVM, NIL_RTGCPHYS);
3062	switch (pVM->pgm.s.enmShadowMode)
3063	{
3064	case PGMMODE_32_BIT:
3065	rc2 = PGM_BTH_NAME_32BIT_PROT(Enter)(pVM, NIL_RTGCPHYS);
3066	break;
3067	case PGMMODE_PAE:
3068	case PGMMODE_PAE_NX:
3069	rc2 = PGM_BTH_NAME_PAE_PROT(Enter)(pVM, NIL_RTGCPHYS);
3070	break;
3071	case PGMMODE_NESTED:
3072	rc2 = PGM_BTH_NAME_NESTED_PROT(Enter)(pVM, NIL_RTGCPHYS);
3073	break;
3074	case PGMMODE_AMD64:
3075	case PGMMODE_AMD64_NX:
3076	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3077	default: AssertFailed(); break;
3078	}
3079	break;
3080
3081	case PGMMODE_32_BIT:
3082	GCPhysCR3 = CPUMGetGuestCR3(pVM) & X86_CR3_PAGE_MASK;
3083	rc = PGM_GST_NAME_32BIT(Enter)(pVM, GCPhysCR3);
3084	switch (pVM->pgm.s.enmShadowMode)
3085	{
3086	case PGMMODE_32_BIT:
3087	rc2 = PGM_BTH_NAME_32BIT_32BIT(Enter)(pVM, GCPhysCR3);
3088	break;
3089	case PGMMODE_PAE:
3090	case PGMMODE_PAE_NX:
3091	rc2 = PGM_BTH_NAME_PAE_32BIT(Enter)(pVM, GCPhysCR3);
3092	break;
3093	case PGMMODE_NESTED:
3094	rc2 = PGM_BTH_NAME_NESTED_32BIT(Enter)(pVM, GCPhysCR3);
3095	break;
3096	case PGMMODE_AMD64:
3097	case PGMMODE_AMD64_NX:
3098	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3099	default: AssertFailed(); break;
3100	}
3101	break;
3102
3103	//case PGMMODE_PAE_NX:
3104	case PGMMODE_PAE:
3105	{
3106	uint32_t u32Dummy, u32Features;
3107
3108	CPUMGetGuestCpuId(pVM, 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
3109	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
3110	{
3111	/* Pause first, then inform Main. */
3112	rc = VMR3SuspendNoSave(pVM);
3113	AssertRC(rc);
3114
3115	VMSetRuntimeError(pVM, true, "PAEmode",
3116	N_("The guest is trying to switch to the PAE mode which is currently disabled by default in VirtualBox. Experimental PAE support can be enabled using the -pae option with VBoxManage."));
3117	/* we must return TRUE here otherwise the recompiler will assert */
3118	return VINF_SUCCESS;
3119	}
3120	GCPhysCR3 = CPUMGetGuestCR3(pVM) & X86_CR3_PAE_PAGE_MASK;
3121	rc = PGM_GST_NAME_PAE(Enter)(pVM, GCPhysCR3);
3122	switch (pVM->pgm.s.enmShadowMode)
3123	{
3124	case PGMMODE_PAE:
3125	case PGMMODE_PAE_NX:
3126	rc2 = PGM_BTH_NAME_PAE_PAE(Enter)(pVM, GCPhysCR3);
3127	break;
3128	case PGMMODE_NESTED:
3129	rc2 = PGM_BTH_NAME_NESTED_PAE(Enter)(pVM, GCPhysCR3);
3130	break;
3131	case PGMMODE_32_BIT:
3132	case PGMMODE_AMD64:
3133	case PGMMODE_AMD64_NX:
3134	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3135	default: AssertFailed(); break;
3136	}
3137	break;
3138	}
3139
3140	//case PGMMODE_AMD64_NX:
3141	case PGMMODE_AMD64:
3142	GCPhysCR3 = CPUMGetGuestCR3(pVM) & 0xfffffffffffff000ULL; /** @todo define this mask and make CR3 64-bit in this case! */
3143	rc = PGM_GST_NAME_AMD64(Enter)(pVM, GCPhysCR3);
3144	switch (pVM->pgm.s.enmShadowMode)
3145	{
3146	case PGMMODE_AMD64:
3147	case PGMMODE_AMD64_NX:
3148	rc2 = PGM_BTH_NAME_AMD64_AMD64(Enter)(pVM, GCPhysCR3);
3149	break;
3150	case PGMMODE_NESTED:
3151	rc2 = PGM_BTH_NAME_NESTED_AMD64(Enter)(pVM, GCPhysCR3);
3152	break;
3153	case PGMMODE_32_BIT:
3154	case PGMMODE_PAE:
3155	case PGMMODE_PAE_NX:
3156	AssertMsgFailed(("Should use AMD64 shadow mode!\n"));
3157	default: AssertFailed(); break;
3158	}
3159	break;
3160
3161	default:
3162	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3163	rc = VERR_NOT_IMPLEMENTED;
3164	break;
3165	}
3166
3167	/* status codes. */
3168	AssertRC(rc);
3169	AssertRC(rc2);
3170	if (VBOX_SUCCESS(rc))
3171	{
3172	rc = rc2;
3173	if (VBOX_SUCCESS(rc)) /* no informational status codes. */
3174	rc = VINF_SUCCESS;
3175	}
3176
3177	/*
3178	* Notify SELM so it can update the TSSes with correct CR3s.
3179	*/
3180	SELMR3PagingModeChanged(pVM);
3181
3182	/* Notify HWACCM as well. */
3183	HWACCMR3PagingModeChanged(pVM, pVM->pgm.s.enmShadowMode);
3184	return rc;
3185	}
3186
3187
3188	/**
3189	* Dumps a PAE shadow page table.
3190	*
3191	* @returns VBox status code (VINF_SUCCESS).
3192	* @param pVM The VM handle.
3193	* @param pPT Pointer to the page table.
3194	* @param u64Address The virtual address of the page table starts.
3195	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
3196	* @param cMaxDepth The maxium depth.
3197	* @param pHlp Pointer to the output functions.
3198	*/
3199	static int pgmR3DumpHierarchyHCPaePT(PVM pVM, PX86PTPAE pPT, uint64_t u64Address, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3200	{
3201	for (unsigned i = 0; i < ELEMENTS(pPT->a); i++)
3202	{
3203	X86PTEPAE Pte = pPT->a[i];
3204	if (Pte.n.u1Present)
3205	{
3206	pHlp->pfnPrintf(pHlp,
3207	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
3208	? "%016llx 3 \| P %c %c %c %c %c %s %s %s %s 4K %c%c%c %016llx\n"
3209	: "%08llx 2 \| P %c %c %c %c %c %s %s %s %s 4K %c%c%c %016llx\n",
3210	u64Address + ((uint64_t)i << X86_PT_PAE_SHIFT),
3211	Pte.n.u1Write ? 'W' : 'R',
3212	Pte.n.u1User ? 'U' : 'S',
3213	Pte.n.u1Accessed ? 'A' : '-',
3214	Pte.n.u1Dirty ? 'D' : '-',
3215	Pte.n.u1Global ? 'G' : '-',
3216	Pte.n.u1WriteThru ? "WT" : "--",
3217	Pte.n.u1CacheDisable? "CD" : "--",
3218	Pte.n.u1PAT ? "AT" : "--",
3219	Pte.n.u1NoExecute ? "NX" : "--",
3220	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
3221	Pte.u & RT_BIT(10) ? '1' : '0',
3222	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED? 'v' : '-',
3223	Pte.u & X86_PTE_PAE_PG_MASK);
3224	}
3225	}
3226	return VINF_SUCCESS;
3227	}
3228
3229
3230	/**
3231	* Dumps a PAE shadow page directory table.
3232	*
3233	* @returns VBox status code (VINF_SUCCESS).
3234	* @param pVM The VM handle.
3235	* @param HCPhys The physical address of the page directory table.
3236	* @param u64Address The virtual address of the page table starts.
3237	* @param cr4 The CR4, PSE is currently used.
3238	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
3239	* @param cMaxDepth The maxium depth.
3240	* @param pHlp Pointer to the output functions.
3241	*/
3242	static int pgmR3DumpHierarchyHCPaePD(PVM pVM, RTHCPHYS HCPhys, uint64_t u64Address, uint32_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3243	{
3244	PX86PDPAE pPD = (PX86PDPAE)MMPagePhys2Page(pVM, HCPhys);
3245	if (!pPD)
3246	{
3247	pHlp->pfnPrintf(pHlp, "%0*llx error! Page directory at HCPhys=%#VHp was not found in the page pool!\n",
3248	fLongMode ? 16 : 8, u64Address, HCPhys);
3249	return VERR_INVALID_PARAMETER;
3250	}
3251	int rc = VINF_SUCCESS;
3252	for (unsigned i = 0; i < ELEMENTS(pPD->a); i++)
3253	{
3254	X86PDEPAE Pde = pPD->a[i];
3255	if (Pde.n.u1Present)
3256	{
3257	if ((cr4 & X86_CR4_PSE) && Pde.b.u1Size)
3258	pHlp->pfnPrintf(pHlp,
3259	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
3260	? "%016llx 2 \| P %c %c %c %c %c %s %s %s %s 4M %c%c%c %016llx\n"
3261	: "%08llx 1 \| P %c %c %c %c %c %s %s %s %s 4M %c%c%c %016llx\n",
3262	u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT),
3263	Pde.b.u1Write ? 'W' : 'R',
3264	Pde.b.u1User ? 'U' : 'S',
3265	Pde.b.u1Accessed ? 'A' : '-',
3266	Pde.b.u1Dirty ? 'D' : '-',
3267	Pde.b.u1Global ? 'G' : '-',
3268	Pde.b.u1WriteThru ? "WT" : "--",
3269	Pde.b.u1CacheDisable? "CD" : "--",
3270	Pde.b.u1PAT ? "AT" : "--",
3271	Pde.b.u1NoExecute ? "NX" : "--",
3272	Pde.u & RT_BIT_64(9) ? '1' : '0',
3273	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
3274	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
3275	Pde.u & X86_PDE_PAE_PG_MASK);
3276	else
3277	{
3278	pHlp->pfnPrintf(pHlp,
3279	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
3280	? "%016llx 2 \| P %c %c %c %c %c %s %s .. %s 4K %c%c%c %016llx\n"
3281	: "%08llx 1 \| P %c %c %c %c %c %s %s .. %s 4K %c%c%c %016llx\n",
3282	u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT),
3283	Pde.n.u1Write ? 'W' : 'R',
3284	Pde.n.u1User ? 'U' : 'S',
3285	Pde.n.u1Accessed ? 'A' : '-',
3286	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
3287	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
3288	Pde.n.u1WriteThru ? "WT" : "--",
3289	Pde.n.u1CacheDisable? "CD" : "--",
3290	Pde.n.u1NoExecute ? "NX" : "--",
3291	Pde.u & RT_BIT_64(9) ? '1' : '0',
3292	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
3293	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
3294	Pde.u & X86_PDE_PAE_PG_MASK);
3295	if (cMaxDepth >= 1)
3296	{
3297	/** @todo what about using the page pool for mapping PTs? */
3298	uint64_t u64AddressPT = u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT);
3299	RTHCPHYS HCPhysPT = Pde.u & X86_PDE_PAE_PG_MASK;
3300	PX86PTPAE pPT = NULL;
3301	if (!(Pde.u & PGM_PDFLAGS_MAPPING))
3302	pPT = (PX86PTPAE)MMPagePhys2Page(pVM, HCPhysPT);
3303	else
3304	{
3305	for (PPGMMAPPING pMap = pVM->pgm.s.pMappingsR3; pMap; pMap = pMap->pNextR3)
3306	{
3307	uint64_t off = u64AddressPT - pMap->GCPtr;
3308	if (off < pMap->cb)
3309	{
3310	const int iPDE = (uint32_t)(off >> X86_PD_SHIFT);
3311	const int iSub = (int)((off >> X86_PD_PAE_SHIFT) & 1); /* MSC is a pain sometimes */
3312	if ((iSub ? pMap->aPTs[iPDE].HCPhysPaePT1 : pMap->aPTs[iPDE].HCPhysPaePT0) != HCPhysPT)
3313	pHlp->pfnPrintf(pHlp, "%0*llx error! Mapping error! PT %d has HCPhysPT=%VHp not %VHp is in the PD.\n",
3314	fLongMode ? 16 : 8, u64AddressPT, iPDE,
3315	iSub ? pMap->aPTs[iPDE].HCPhysPaePT1 : pMap->aPTs[iPDE].HCPhysPaePT0, HCPhysPT);
3316	pPT = &pMap->aPTs[iPDE].paPaePTsR3[iSub];
3317	}
3318	}
3319	}
3320	int rc2 = VERR_INVALID_PARAMETER;
3321	if (pPT)
3322	rc2 = pgmR3DumpHierarchyHCPaePT(pVM, pPT, u64AddressPT, fLongMode, cMaxDepth - 1, pHlp);
3323	else
3324	pHlp->pfnPrintf(pHlp, "%0*llx error! Page table at HCPhys=%#VHp was not found in the page pool!\n",
3325	fLongMode ? 16 : 8, u64AddressPT, HCPhysPT);
3326	if (rc2 < rc && VBOX_SUCCESS(rc))
3327	rc = rc2;
3328	}
3329	}
3330	}
3331	}
3332	return rc;
3333	}
3334
3335
3336	/**
3337	* Dumps a PAE shadow page directory pointer table.
3338	*
3339	* @returns VBox status code (VINF_SUCCESS).
3340	* @param pVM The VM handle.
3341	* @param HCPhys The physical address of the page directory pointer table.
3342	* @param u64Address The virtual address of the page table starts.
3343	* @param cr4 The CR4, PSE is currently used.
3344	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
3345	* @param cMaxDepth The maxium depth.
3346	* @param pHlp Pointer to the output functions.
3347	*/
3348	static int pgmR3DumpHierarchyHCPaePDPT(PVM pVM, RTHCPHYS HCPhys, uint64_t u64Address, uint32_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3349	{
3350	PX86PDPT pPDPT = (PX86PDPT)MMPagePhys2Page(pVM, HCPhys);
3351	if (!pPDPT)
3352	{
3353	pHlp->pfnPrintf(pHlp, "%0*llx error! Page directory pointer table at HCPhys=%#VHp was not found in the page pool!\n",
3354	fLongMode ? 16 : 8, u64Address, HCPhys);
3355	return VERR_INVALID_PARAMETER;
3356	}
3357
3358	int rc = VINF_SUCCESS;
3359	const unsigned c = fLongMode ? ELEMENTS(pPDPT->a) : X86_PG_PAE_PDPE_ENTRIES;
3360	for (unsigned i = 0; i < c; i++)
3361	{
3362	X86PDPE Pdpe = pPDPT->a[i];
3363	if (Pdpe.n.u1Present)
3364	{
3365	if (fLongMode)
3366	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a p ? /
3367	"%016llx 1 \| P %c %c %c %c %c %s %s %s %s .. %c%c%c %016llx\n",
3368	u64Address + ((uint64_t)i << X86_PDPT_SHIFT),
3369	Pdpe.lm.u1Write ? 'W' : 'R',
3370	Pdpe.lm.u1User ? 'U' : 'S',
3371	Pdpe.lm.u1Accessed ? 'A' : '-',
3372	Pdpe.lm.u3Reserved & 1? '?' : '.', /* ignored */
3373	Pdpe.lm.u3Reserved & 4? '!' : '.', /* mbz */
3374	Pdpe.lm.u1WriteThru ? "WT" : "--",
3375	Pdpe.lm.u1CacheDisable? "CD" : "--",
3376	Pdpe.lm.u3Reserved & 2? "!" : "..",/* mbz */
3377	Pdpe.lm.u1NoExecute ? "NX" : "--",
3378	Pdpe.u & RT_BIT(9) ? '1' : '0',
3379	Pdpe.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
3380	Pdpe.u & RT_BIT(11) ? '1' : '0',
3381	Pdpe.u & X86_PDPE_PG_MASK);
3382	else
3383	pHlp->pfnPrintf(pHlp, /P G WT CD AT NX 4M a p ? /
3384	"%08x 0 \| P %c %s %s %s %s .. %c%c%c %016llx\n",
3385	i << X86_PDPT_SHIFT,
3386	Pdpe.n.u4Reserved & 1? '!' : '.', /* mbz */
3387	Pdpe.n.u4Reserved & 4? '!' : '.', /* mbz */
3388	Pdpe.n.u1WriteThru ? "WT" : "--",
3389	Pdpe.n.u1CacheDisable? "CD" : "--",
3390	Pdpe.n.u4Reserved & 2? "!" : "..",/* mbz */
3391	Pdpe.u & RT_BIT(9) ? '1' : '0',
3392	Pdpe.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
3393	Pdpe.u & RT_BIT(11) ? '1' : '0',
3394	Pdpe.u & X86_PDPE_PG_MASK);
3395	if (cMaxDepth >= 1)
3396	{
3397	int rc2 = pgmR3DumpHierarchyHCPaePD(pVM, Pdpe.u & X86_PDPE_PG_MASK, u64Address + ((uint64_t)i << X86_PDPT_SHIFT),
3398	cr4, fLongMode, cMaxDepth - 1, pHlp);
3399	if (rc2 < rc && VBOX_SUCCESS(rc))
3400	rc = rc2;
3401	}
3402	}
3403	}
3404	return rc;
3405	}
3406
3407
3408	/**
3409	* Dumps a 32-bit shadow page table.
3410	*
3411	* @returns VBox status code (VINF_SUCCESS).
3412	* @param pVM The VM handle.
3413	* @param HCPhys The physical address of the table.
3414	* @param cr4 The CR4, PSE is currently used.
3415	* @param cMaxDepth The maxium depth.
3416	* @param pHlp Pointer to the output functions.
3417	*/
3418	static int pgmR3DumpHierarchyHcPaePML4(PVM pVM, RTHCPHYS HCPhys, uint32_t cr4, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3419	{
3420	PX86PML4 pPML4 = (PX86PML4)MMPagePhys2Page(pVM, HCPhys);
3421	if (!pPML4)
3422	{
3423	pHlp->pfnPrintf(pHlp, "Page map level 4 at HCPhys=%#VHp was not found in the page pool!\n", HCPhys);
3424	return VERR_INVALID_PARAMETER;
3425	}
3426
3427	int rc = VINF_SUCCESS;
3428	for (unsigned i = 0; i < ELEMENTS(pPML4->a); i++)
3429	{
3430	X86PML4E Pml4e = pPML4->a[i];
3431	if (Pml4e.n.u1Present)
3432	{
3433	uint64_t u64Address = ((uint64_t)i << X86_PML4_SHIFT) \| (((uint64_t)i >> (X86_PML4_SHIFT - X86_PDPT_SHIFT - 1)) * 0xffff000000000000ULL);
3434	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a p ? /
3435	"%016llx 0 \| P %c %c %c %c %c %s %s %s %s .. %c%c%c %016llx\n",
3436	u64Address,
3437	Pml4e.n.u1Write ? 'W' : 'R',
3438	Pml4e.n.u1User ? 'U' : 'S',
3439	Pml4e.n.u1Accessed ? 'A' : '-',
3440	Pml4e.n.u3Reserved & 1? '?' : '.', /* ignored */
3441	Pml4e.n.u3Reserved & 4? '!' : '.', /* mbz */
3442	Pml4e.n.u1WriteThru ? "WT" : "--",
3443	Pml4e.n.u1CacheDisable? "CD" : "--",
3444	Pml4e.n.u3Reserved & 2? "!" : "..",/* mbz */
3445	Pml4e.n.u1NoExecute ? "NX" : "--",
3446	Pml4e.u & RT_BIT(9) ? '1' : '0',
3447	Pml4e.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
3448	Pml4e.u & RT_BIT(11) ? '1' : '0',
3449	Pml4e.u & X86_PML4E_PG_MASK);
3450
3451	if (cMaxDepth >= 1)
3452	{
3453	int rc2 = pgmR3DumpHierarchyHCPaePDPT(pVM, Pml4e.u & X86_PML4E_PG_MASK, u64Address, cr4, true, cMaxDepth - 1, pHlp);
3454	if (rc2 < rc && VBOX_SUCCESS(rc))
3455	rc = rc2;
3456	}
3457	}
3458	}
3459	return rc;
3460	}
3461
3462
3463	/**
3464	* Dumps a 32-bit shadow page table.
3465	*
3466	* @returns VBox status code (VINF_SUCCESS).
3467	* @param pVM The VM handle.
3468	* @param pPT Pointer to the page table.
3469	* @param u32Address The virtual address this table starts at.
3470	* @param pHlp Pointer to the output functions.
3471	*/
3472	int pgmR3DumpHierarchyHC32BitPT(PVM pVM, PX86PT pPT, uint32_t u32Address, PCDBGFINFOHLP pHlp)
3473	{
3474	for (unsigned i = 0; i < ELEMENTS(pPT->a); i++)
3475	{
3476	X86PTE Pte = pPT->a[i];
3477	if (Pte.n.u1Present)
3478	{
3479	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
3480	"%08x 1 \| P %c %c %c %c %c %s %s %s .. 4K %c%c%c %08x\n",
3481	u32Address + (i << X86_PT_SHIFT),
3482	Pte.n.u1Write ? 'W' : 'R',
3483	Pte.n.u1User ? 'U' : 'S',
3484	Pte.n.u1Accessed ? 'A' : '-',
3485	Pte.n.u1Dirty ? 'D' : '-',
3486	Pte.n.u1Global ? 'G' : '-',
3487	Pte.n.u1WriteThru ? "WT" : "--",
3488	Pte.n.u1CacheDisable? "CD" : "--",
3489	Pte.n.u1PAT ? "AT" : "--",
3490	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
3491	Pte.u & RT_BIT(10) ? '1' : '0',
3492	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED ? 'v' : '-',
3493	Pte.u & X86_PDE_PG_MASK);
3494	}
3495	}
3496	return VINF_SUCCESS;
3497	}
3498
3499
3500	/**
3501	* Dumps a 32-bit shadow page directory and page tables.
3502	*
3503	* @returns VBox status code (VINF_SUCCESS).
3504	* @param pVM The VM handle.
3505	* @param cr3 The root of the hierarchy.
3506	* @param cr4 The CR4, PSE is currently used.
3507	* @param cMaxDepth How deep into the hierarchy the dumper should go.
3508	* @param pHlp Pointer to the output functions.
3509	*/
3510	int pgmR3DumpHierarchyHC32BitPD(PVM pVM, uint32_t cr3, uint32_t cr4, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3511	{
3512	PX86PD pPD = (PX86PD)MMPagePhys2Page(pVM, cr3 & X86_CR3_PAGE_MASK);
3513	if (!pPD)
3514	{
3515	pHlp->pfnPrintf(pHlp, "Page directory at %#x was not found in the page pool!\n", cr3 & X86_CR3_PAGE_MASK);
3516	return VERR_INVALID_PARAMETER;
3517	}
3518
3519	int rc = VINF_SUCCESS;
3520	for (unsigned i = 0; i < ELEMENTS(pPD->a); i++)
3521	{
3522	X86PDE Pde = pPD->a[i];
3523	if (Pde.n.u1Present)
3524	{
3525	const uint32_t u32Address = i << X86_PD_SHIFT;
3526	if ((cr4 & X86_CR4_PSE) && Pde.b.u1Size)
3527	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
3528	"%08x 0 \| P %c %c %c %c %c %s %s %s .. 4M %c%c%c %08x\n",
3529	u32Address,
3530	Pde.b.u1Write ? 'W' : 'R',
3531	Pde.b.u1User ? 'U' : 'S',
3532	Pde.b.u1Accessed ? 'A' : '-',
3533	Pde.b.u1Dirty ? 'D' : '-',
3534	Pde.b.u1Global ? 'G' : '-',
3535	Pde.b.u1WriteThru ? "WT" : "--",
3536	Pde.b.u1CacheDisable? "CD" : "--",
3537	Pde.b.u1PAT ? "AT" : "--",
3538	Pde.u & RT_BIT_64(9) ? '1' : '0',
3539	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
3540	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
3541	Pde.u & X86_PDE4M_PG_MASK);
3542	else
3543	{
3544	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
3545	"%08x 0 \| P %c %c %c %c %c %s %s .. .. 4K %c%c%c %08x\n",
3546	u32Address,
3547	Pde.n.u1Write ? 'W' : 'R',
3548	Pde.n.u1User ? 'U' : 'S',
3549	Pde.n.u1Accessed ? 'A' : '-',
3550	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
3551	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
3552	Pde.n.u1WriteThru ? "WT" : "--",
3553	Pde.n.u1CacheDisable? "CD" : "--",
3554	Pde.u & RT_BIT_64(9) ? '1' : '0',
3555	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
3556	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
3557	Pde.u & X86_PDE_PG_MASK);
3558	if (cMaxDepth >= 1)
3559	{
3560	/** @todo what about using the page pool for mapping PTs? */
3561	RTHCPHYS HCPhys = Pde.u & X86_PDE_PG_MASK;
3562	PX86PT pPT = NULL;
3563	if (!(Pde.u & PGM_PDFLAGS_MAPPING))
3564	pPT = (PX86PT)MMPagePhys2Page(pVM, HCPhys);
3565	else
3566	{
3567	for (PPGMMAPPING pMap = pVM->pgm.s.pMappingsR3; pMap; pMap = pMap->pNextR3)
3568	if (u32Address - pMap->GCPtr < pMap->cb)
3569	{
3570	int iPDE = (u32Address - pMap->GCPtr) >> X86_PD_SHIFT;
3571	if (pMap->aPTs[iPDE].HCPhysPT != HCPhys)
3572	pHlp->pfnPrintf(pHlp, "%08x error! Mapping error! PT %d has HCPhysPT=%VHp not %VHp is in the PD.\n",
3573	u32Address, iPDE, pMap->aPTs[iPDE].HCPhysPT, HCPhys);
3574	pPT = pMap->aPTs[iPDE].pPTR3;
3575	}
3576	}
3577	int rc2 = VERR_INVALID_PARAMETER;
3578	if (pPT)
3579	rc2 = pgmR3DumpHierarchyHC32BitPT(pVM, pPT, u32Address, pHlp);
3580	else
3581	pHlp->pfnPrintf(pHlp, "%08x error! Page table at %#x was not found in the page pool!\n", u32Address, HCPhys);
3582	if (rc2 < rc && VBOX_SUCCESS(rc))
3583	rc = rc2;
3584	}
3585	}
3586	}
3587	}
3588
3589	return rc;
3590	}
3591
3592
3593	/**
3594	* Dumps a 32-bit shadow page table.
3595	*
3596	* @returns VBox status code (VINF_SUCCESS).
3597	* @param pVM The VM handle.
3598	* @param pPT Pointer to the page table.
3599	* @param u32Address The virtual address this table starts at.
3600	* @param PhysSearch Address to search for.
3601	*/
3602	int pgmR3DumpHierarchyGC32BitPT(PVM pVM, PX86PT pPT, uint32_t u32Address, RTGCPHYS PhysSearch)
3603	{
3604	for (unsigned i = 0; i < ELEMENTS(pPT->a); i++)
3605	{
3606	X86PTE Pte = pPT->a[i];
3607	if (Pte.n.u1Present)
3608	{
3609	Log(( /P R S A D G WT CD AT NX 4M a m d /
3610	"%08x 1 \| P %c %c %c %c %c %s %s %s .. 4K %c%c%c %08x\n",
3611	u32Address + (i << X86_PT_SHIFT),
3612	Pte.n.u1Write ? 'W' : 'R',
3613	Pte.n.u1User ? 'U' : 'S',
3614	Pte.n.u1Accessed ? 'A' : '-',
3615	Pte.n.u1Dirty ? 'D' : '-',
3616	Pte.n.u1Global ? 'G' : '-',
3617	Pte.n.u1WriteThru ? "WT" : "--",
3618	Pte.n.u1CacheDisable? "CD" : "--",
3619	Pte.n.u1PAT ? "AT" : "--",
3620	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
3621	Pte.u & RT_BIT(10) ? '1' : '0',
3622	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED ? 'v' : '-',
3623	Pte.u & X86_PDE_PG_MASK));
3624
3625	if ((Pte.u & X86_PDE_PG_MASK) == PhysSearch)
3626	{
3627	uint64_t fPageShw = 0;
3628	RTHCPHYS pPhysHC = 0;
3629
3630	PGMShwGetPage(pVM, (RTGCPTR)(u32Address + (i << X86_PT_SHIFT)), &fPageShw, &pPhysHC);
3631	Log(("Found %VGp at %VGv -> flags=%llx\n", PhysSearch, (RTGCPTR)(u32Address + (i << X86_PT_SHIFT)), fPageShw));
3632	}
3633	}
3634	}
3635	return VINF_SUCCESS;
3636	}
3637
3638
3639	/**
3640	* Dumps a 32-bit guest page directory and page tables.
3641	*
3642	* @returns VBox status code (VINF_SUCCESS).
3643	* @param pVM The VM handle.
3644	* @param cr3 The root of the hierarchy.
3645	* @param cr4 The CR4, PSE is currently used.
3646	* @param PhysSearch Address to search for.
3647	*/
3648	PGMR3DECL(int) PGMR3DumpHierarchyGC(PVM pVM, uint64_t cr3, uint64_t cr4, RTGCPHYS PhysSearch)
3649	{
3650	bool fLongMode = false;
3651	const unsigned cch = fLongMode ? 16 : 8; NOREF(cch);
3652	PX86PD pPD = 0;
3653
3654	int rc = PGM_GCPHYS_2_PTR(pVM, cr3 & X86_CR3_PAGE_MASK, &pPD);
3655	if (VBOX_FAILURE(rc) \|\| !pPD)
3656	{
3657	Log(("Page directory at %#x was not found in the page pool!\n", cr3 & X86_CR3_PAGE_MASK));
3658	return VERR_INVALID_PARAMETER;
3659	}
3660
3661	Log(("cr3=%08x cr4=%08x%s\n"
3662	"%-*s P - Present\n"
3663	"%-*s \| R/W - Read (0) / Write (1)\n"
3664	"%-*s \| \| U/S - User (1) / Supervisor (0)\n"
3665	"%-*s \| \| \| A - Accessed\n"
3666	"%-*s \| \| \| \| D - Dirty\n"
3667	"%-*s \| \| \| \| \| G - Global\n"
3668	"%-*s \| \| \| \| \| \| WT - Write thru\n"
3669	"%-*s \| \| \| \| \| \| \| CD - Cache disable\n"
3670	"%-*s \| \| \| \| \| \| \| \| AT - Attribute table (PAT)\n"
3671	"%-*s \| \| \| \| \| \| \| \| \| NX - No execute (K8)\n"
3672	"%-*s \| \| \| \| \| \| \| \| \| \| 4K/4M/2M - Page size.\n"
3673	"%-*s \| \| \| \| \| \| \| \| \| \| \| AVL - a=allocated; m=mapping; d=track dirty;\n"
3674	"%-*s \| \| \| \| \| \| \| \| \| \| \| \| p=permanent; v=validated;\n"
3675	"%-*s Level \| \| \| \| \| \| \| \| \| \| \| \| Page\n"
3676	/* xxxx n **** P R S A D G WT CD AT NX 4M AVL xxxxxxxxxxxxx
3677	- W U - - - -- -- -- -- -- 010 */
3678	, cr3, cr4, fLongMode ? " Long Mode" : "",
3679	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "",
3680	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "Address"));
3681
3682	for (unsigned i = 0; i < ELEMENTS(pPD->a); i++)
3683	{
3684	X86PDE Pde = pPD->a[i];
3685	if (Pde.n.u1Present)
3686	{
3687	const uint32_t u32Address = i << X86_PD_SHIFT;
3688
3689	if ((cr4 & X86_CR4_PSE) && Pde.b.u1Size)
3690	Log(( /P R S A D G WT CD AT NX 4M a m d /
3691	"%08x 0 \| P %c %c %c %c %c %s %s %s .. 4M %c%c%c %08x\n",
3692	u32Address,
3693	Pde.b.u1Write ? 'W' : 'R',
3694	Pde.b.u1User ? 'U' : 'S',
3695	Pde.b.u1Accessed ? 'A' : '-',
3696	Pde.b.u1Dirty ? 'D' : '-',
3697	Pde.b.u1Global ? 'G' : '-',
3698	Pde.b.u1WriteThru ? "WT" : "--",
3699	Pde.b.u1CacheDisable? "CD" : "--",
3700	Pde.b.u1PAT ? "AT" : "--",
3701	Pde.u & RT_BIT(9) ? '1' : '0',
3702	Pde.u & RT_BIT(10) ? '1' : '0',
3703	Pde.u & RT_BIT(11) ? '1' : '0',
3704	Pde.u & X86_PDE4M_PG_MASK));
3705	/** @todo PhysSearch */
3706	else
3707	{
3708	Log(( /P R S A D G WT CD AT NX 4M a m d /
3709	"%08x 0 \| P %c %c %c %c %c %s %s .. .. 4K %c%c%c %08x\n",
3710	u32Address,
3711	Pde.n.u1Write ? 'W' : 'R',
3712	Pde.n.u1User ? 'U' : 'S',
3713	Pde.n.u1Accessed ? 'A' : '-',
3714	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
3715	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
3716	Pde.n.u1WriteThru ? "WT" : "--",
3717	Pde.n.u1CacheDisable? "CD" : "--",
3718	Pde.u & RT_BIT(9) ? '1' : '0',
3719	Pde.u & RT_BIT(10) ? '1' : '0',
3720	Pde.u & RT_BIT(11) ? '1' : '0',
3721	Pde.u & X86_PDE_PG_MASK));
3722	////if (cMaxDepth >= 1)
3723	{
3724	/** @todo what about using the page pool for mapping PTs? */
3725	RTGCPHYS GCPhys = Pde.u & X86_PDE_PG_MASK;
3726	PX86PT pPT = NULL;
3727
3728	rc = PGM_GCPHYS_2_PTR(pVM, GCPhys, &pPT);
3729
3730	int rc2 = VERR_INVALID_PARAMETER;
3731	if (pPT)
3732	rc2 = pgmR3DumpHierarchyGC32BitPT(pVM, pPT, u32Address, PhysSearch);
3733	else
3734	Log(("%08x error! Page table at %#x was not found in the page pool!\n", u32Address, GCPhys));
3735	if (rc2 < rc && VBOX_SUCCESS(rc))
3736	rc = rc2;
3737	}
3738	}
3739	}
3740	}
3741
3742	return rc;
3743	}
3744
3745
3746	/**
3747	* Dumps a page table hierarchy use only physical addresses and cr4/lm flags.
3748	*
3749	* @returns VBox status code (VINF_SUCCESS).
3750	* @param pVM The VM handle.
3751	* @param cr3 The root of the hierarchy.
3752	* @param cr4 The cr4, only PAE and PSE is currently used.
3753	* @param fLongMode Set if long mode, false if not long mode.
3754	* @param cMaxDepth Number of levels to dump.
3755	* @param pHlp Pointer to the output functions.
3756	*/
3757	PGMR3DECL(int) PGMR3DumpHierarchyHC(PVM pVM, uint64_t cr3, uint64_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
3758	{
3759	if (!pHlp)
3760	pHlp = DBGFR3InfoLogHlp();
3761	if (!cMaxDepth)
3762	return VINF_SUCCESS;
3763	const unsigned cch = fLongMode ? 16 : 8;
3764	pHlp->pfnPrintf(pHlp,
3765	"cr3=%08x cr4=%08x%s\n"
3766	"%-*s P - Present\n"
3767	"%-*s \| R/W - Read (0) / Write (1)\n"
3768	"%-*s \| \| U/S - User (1) / Supervisor (0)\n"
3769	"%-*s \| \| \| A - Accessed\n"
3770	"%-*s \| \| \| \| D - Dirty\n"
3771	"%-*s \| \| \| \| \| G - Global\n"
3772	"%-*s \| \| \| \| \| \| WT - Write thru\n"
3773	"%-*s \| \| \| \| \| \| \| CD - Cache disable\n"
3774	"%-*s \| \| \| \| \| \| \| \| AT - Attribute table (PAT)\n"
3775	"%-*s \| \| \| \| \| \| \| \| \| NX - No execute (K8)\n"
3776	"%-*s \| \| \| \| \| \| \| \| \| \| 4K/4M/2M - Page size.\n"
3777	"%-*s \| \| \| \| \| \| \| \| \| \| \| AVL - a=allocated; m=mapping; d=track dirty;\n"
3778	"%-*s \| \| \| \| \| \| \| \| \| \| \| \| p=permanent; v=validated;\n"
3779	"%-*s Level \| \| \| \| \| \| \| \| \| \| \| \| Page\n"
3780	/* xxxx n **** P R S A D G WT CD AT NX 4M AVL xxxxxxxxxxxxx
3781	- W U - - - -- -- -- -- -- 010 */
3782	, cr3, cr4, fLongMode ? " Long Mode" : "",
3783	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "",
3784	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "Address");
3785	if (cr4 & X86_CR4_PAE)
3786	{
3787	if (fLongMode)
3788	return pgmR3DumpHierarchyHcPaePML4(pVM, cr3 & X86_CR3_PAGE_MASK, cr4, cMaxDepth, pHlp);
3789	return pgmR3DumpHierarchyHCPaePDPT(pVM, cr3 & X86_CR3_PAE_PAGE_MASK, 0, cr4, false, cMaxDepth, pHlp);
3790	}
3791	return pgmR3DumpHierarchyHC32BitPD(pVM, cr3 & X86_CR3_PAGE_MASK, cr4, cMaxDepth, pHlp);
3792	}
3793
3794
3795
3796	#ifdef VBOX_WITH_DEBUGGER
3797	/**
3798	* The '.pgmram' command.
3799	*
3800	* @returns VBox status.
3801	* @param pCmd Pointer to the command descriptor (as registered).
3802	* @param pCmdHlp Pointer to command helper functions.
3803	* @param pVM Pointer to the current VM (if any).
3804	* @param paArgs Pointer to (readonly) array of arguments.
3805	* @param cArgs Number of arguments in the array.
3806	*/
3807	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
3808	{
3809	/*
3810	* Validate input.
3811	*/
3812	if (!pVM)
3813	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
3814	if (!pVM->pgm.s.pRamRangesGC)
3815	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no Ram is registered.\n");
3816
3817	/*
3818	* Dump the ranges.
3819	*/
3820	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "From - To (incl) pvHC\n");
3821	PPGMRAMRANGE pRam;
3822	for (pRam = pVM->pgm.s.pRamRangesR3; pRam; pRam = pRam->pNextR3)
3823	{
3824	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
3825	"%VGp - %VGp %p\n",
3826	pRam->GCPhys, pRam->GCPhysLast, pRam->pvHC);
3827	if (VBOX_FAILURE(rc))
3828	return rc;
3829	}
3830
3831	return VINF_SUCCESS;
3832	}
3833
3834
3835	/**
3836	* The '.pgmmap' command.
3837	*
3838	* @returns VBox status.
3839	* @param pCmd Pointer to the command descriptor (as registered).
3840	* @param pCmdHlp Pointer to command helper functions.
3841	* @param pVM Pointer to the current VM (if any).
3842	* @param paArgs Pointer to (readonly) array of arguments.
3843	* @param cArgs Number of arguments in the array.
3844	*/
3845	static DECLCALLBACK(int) pgmR3CmdMap(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
3846	{
3847	/*
3848	* Validate input.
3849	*/
3850	if (!pVM)
3851	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
3852	if (!pVM->pgm.s.pMappingsR3)
3853	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no mappings are registered.\n");
3854
3855	/*
3856	* Print message about the fixedness of the mappings.
3857	*/
3858	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, pVM->pgm.s.fMappingsFixed ? "The mappings are FIXED.\n" : "The mappings are FLOATING.\n");
3859	if (VBOX_FAILURE(rc))
3860	return rc;
3861
3862	/*
3863	* Dump the ranges.
3864	*/
3865	PPGMMAPPING pCur;
3866	for (pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
3867	{
3868	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
3869	"%08x - %08x %s\n",
3870	pCur->GCPtr, pCur->GCPtrLast, pCur->pszDesc);
3871	if (VBOX_FAILURE(rc))
3872	return rc;
3873	}
3874
3875	return VINF_SUCCESS;
3876	}
3877
3878
3879	/**
3880	* The '.pgmsync' command.
3881	*
3882	* @returns VBox status.
3883	* @param pCmd Pointer to the command descriptor (as registered).
3884	* @param pCmdHlp Pointer to command helper functions.
3885	* @param pVM Pointer to the current VM (if any).
3886	* @param paArgs Pointer to (readonly) array of arguments.
3887	* @param cArgs Number of arguments in the array.
3888	*/
3889	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
3890	{
3891	/*
3892	* Validate input.
3893	*/
3894	if (!pVM)
3895	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
3896
3897	/*
3898	* Force page directory sync.
3899	*/
3900	VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3);
3901
3902	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Forcing page directory sync.\n");
3903	if (VBOX_FAILURE(rc))
3904	return rc;
3905
3906	return VINF_SUCCESS;
3907	}
3908
3909
3910	/**
3911	* The '.pgmsyncalways' command.
3912	*
3913	* @returns VBox status.
3914	* @param pCmd Pointer to the command descriptor (as registered).
3915	* @param pCmdHlp Pointer to command helper functions.
3916	* @param pVM Pointer to the current VM (if any).
3917	* @param paArgs Pointer to (readonly) array of arguments.
3918	* @param cArgs Number of arguments in the array.
3919	*/
3920	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
3921	{
3922	/*
3923	* Validate input.
3924	*/
3925	if (!pVM)
3926	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
3927
3928	/*
3929	* Force page directory sync.
3930	*/
3931	if (pVM->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
3932	{
3933	ASMAtomicAndU32(&pVM->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
3934	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Disabled permanent forced page directory syncing.\n");
3935	}
3936	else
3937	{
3938	ASMAtomicOrU32(&pVM->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
3939	VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3);
3940	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Enabled permanent forced page directory syncing.\n");
3941	}
3942	}
3943
3944	#endif
3945
3946	/**
3947	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
3948	*/
3949	typedef struct PGMCHECKINTARGS
3950	{
3951	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
3952	PPGMPHYSHANDLER pPrevPhys;
3953	PPGMVIRTHANDLER pPrevVirt;
3954	PPGMPHYS2VIRTHANDLER pPrevPhys2Virt;
3955	PVM pVM;
3956	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
3957
3958	/**
3959	* Validate a node in the physical handler tree.
3960	*
3961	* @returns 0 on if ok, other wise 1.
3962	* @param pNode The handler node.
3963	* @param pvUser pVM.
3964	*/
3965	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
3966	{
3967	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
3968	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
3969	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
3970	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %VGp-%VGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3971	AssertReleaseMsg( !pArgs->pPrevPhys
3972	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
3973	("pPrevPhys=%p %VGp-%VGp %s\n"
3974	" pCur=%p %VGp-%VGp %s\n",
3975	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
3976	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3977	pArgs->pPrevPhys = pCur;
3978	return 0;
3979	}
3980
3981
3982	/**
3983	* Validate a node in the virtual handler tree.
3984	*
3985	* @returns 0 on if ok, other wise 1.
3986	* @param pNode The handler node.
3987	* @param pvUser pVM.
3988	*/
3989	static DECLCALLBACK(int) pgmR3CheckIntegrityVirtHandlerNode(PAVLROGCPTRNODECORE pNode, void *pvUser)
3990	{
3991	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
3992	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
3993	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
3994	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %VGv-%VGv %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3995	AssertReleaseMsg( !pArgs->pPrevVirt
3996	\|\| (pArgs->fLeftToRight ? pArgs->pPrevVirt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevVirt->Core.KeyLast > pCur->Core.Key),
3997	("pPrevVirt=%p %VGv-%VGv %s\n"
3998	" pCur=%p %VGv-%VGv %s\n",
3999	pArgs->pPrevVirt, pArgs->pPrevVirt->Core.Key, pArgs->pPrevVirt->Core.KeyLast, pArgs->pPrevVirt->pszDesc,
4000	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4001	for (unsigned iPage = 0; iPage < pCur->cPages; iPage++)
4002	{
4003	AssertReleaseMsg(pCur->aPhysToVirt[iPage].offVirtHandler == -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage]),
4004	("pCur=%p %VGv-%VGv %s\n"
4005	"iPage=%d offVirtHandle=%#x expected %#x\n",
4006	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc,
4007	iPage, pCur->aPhysToVirt[iPage].offVirtHandler, -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage])));
4008	}
4009	pArgs->pPrevVirt = pCur;
4010	return 0;
4011	}
4012
4013
4014	/**
4015	* Validate a node in the virtual handler tree.
4016	*
4017	* @returns 0 on if ok, other wise 1.
4018	* @param pNode The handler node.
4019	* @param pvUser pVM.
4020	*/
4021	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysToVirtHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4022	{
4023	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4024	PPGMPHYS2VIRTHANDLER pCur = (PPGMPHYS2VIRTHANDLER)pNode;
4025	AssertReleaseMsgReturn(!((uintptr_t)pCur & 3), ("\n"), 1);
4026	AssertReleaseMsgReturn(!(pCur->offVirtHandler & 3), ("\n"), 1);
4027	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %VGp-%VGp\n", pCur, pCur->Core.Key, pCur->Core.KeyLast));
4028	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4029	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4030	("pPrevPhys2Virt=%p %VGp-%VGp\n"
4031	" pCur=%p %VGp-%VGp\n",
4032	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4033	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4034	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4035	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4036	("pPrevPhys2Virt=%p %VGp-%VGp\n"
4037	" pCur=%p %VGp-%VGp\n",
4038	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4039	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4040	AssertReleaseMsg((pCur->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD),
4041	("pCur=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4042	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4043	if (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)
4044	{
4045	PPGMPHYS2VIRTHANDLER pCur2 = pCur;
4046	for (;;)
4047	{
4048	pCur2 = (PPGMPHYS2VIRTHANDLER)((intptr_t)pCur + (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK));
4049	AssertReleaseMsg(pCur2 != pCur,
4050	(" pCur=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4051	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4052	AssertReleaseMsg((pCur2->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == PGMPHYS2VIRTHANDLER_IN_TREE,
4053	(" pCur=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4054	"pCur2=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4055	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4056	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4057	AssertReleaseMsg((pCur2->Core.Key ^ pCur->Core.Key) < PAGE_SIZE,
4058	(" pCur=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4059	"pCur2=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4060	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4061	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4062	AssertReleaseMsg((pCur2->Core.KeyLast ^ pCur->Core.KeyLast) < PAGE_SIZE,
4063	(" pCur=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4064	"pCur2=%p:{.Core.Key=%VGp, .Core.KeyLast=%VGp, .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	if (!(pCur2->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK))
4068	break;
4069	}
4070	}
4071
4072	pArgs->pPrevPhys2Virt = pCur;
4073	return 0;
4074	}
4075
4076
4077	/**
4078	* Perform an integrity check on the PGM component.
4079	*
4080	* @returns VINF_SUCCESS if everything is fine.
4081	* @returns VBox error status after asserting on integrity breach.
4082	* @param pVM The VM handle.
4083	*/
4084	PDMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
4085	{
4086	AssertReleaseReturn(pVM->pgm.s.offVM, VERR_INTERNAL_ERROR);
4087
4088	/*
4089	* Check the trees.
4090	*/
4091	int cErrors = 0;
4092	const static PGMCHECKINTARGS s_LeftToRight = { true, NULL, NULL, NULL, pVM };
4093	const static PGMCHECKINTARGS s_RightToLeft = { false, NULL, NULL, NULL, pVM };
4094	PGMCHECKINTARGS Args = s_LeftToRight;
4095	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesHC->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4096	Args = s_RightToLeft;
4097	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesHC->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4098	Args = s_LeftToRight;
4099	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesHC->VirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4100	Args = s_RightToLeft;
4101	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesHC->VirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4102	Args = s_LeftToRight;
4103	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesHC->HyperVirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4104	Args = s_RightToLeft;
4105	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesHC->HyperVirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4106	Args = s_LeftToRight;
4107	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesHC->PhysToVirtHandlers, true, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4108	Args = s_RightToLeft;
4109	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesHC->PhysToVirtHandlers, false, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4110
4111	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
4112	}
4113
4114
4115	/**
4116	* Inform PGM if we want all mappings to be put into the shadow page table. (necessary for e.g. VMX)
4117	*
4118	* @returns VBox status code.
4119	* @param pVM VM handle.
4120	* @param fEnable Enable or disable shadow mappings
4121	*/
4122	PGMR3DECL(int) PGMR3ChangeShwPDMappings(PVM pVM, bool fEnable)
4123	{
4124	pVM->pgm.s.fDisableMappings = !fEnable;
4125
4126	uint32_t cb;
4127	int rc = PGMR3MappingsSize(pVM, &cb);
4128	AssertRCReturn(rc, rc);
4129
4130	/* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */
4131	rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb);
4132	AssertRCReturn(rc, rc);
4133
4134	return VINF_SUCCESS;
4135	}

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source: vbox/trunk/src/VBox/VMM/PGM.cpp@ 9122

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