PGM.cpp@ 20786

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1	/* $Id: PGM.cpp 20277 2009-06-04 13:07:50Z 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	* @see grp_pgm,
26	* @ref pg_pgm_pool,
27	* @ref pg_pgm_phys.
28	*
29	*
30	* @section sec_pgm_modes Paging Modes
31	*
32	* There are three memory contexts: Host Context (HC), Guest Context (GC)
33	* and intermediate context. When talking about paging HC can also be refered to
34	* as "host paging", and GC refered to as "shadow paging".
35	*
36	* We define three basic paging modes: 32-bit, PAE and AMD64. The host paging mode
37	* is defined by the host operating system. The mode used in the shadow paging mode
38	* depends on the host paging mode and what the mode the guest is currently in. The
39	* following relation between the two is defined:
40	*
41	* @verbatim
42	Host > 32-bit \| PAE \| AMD64 \|
43	Guest \| \| \| \|
44	==v================================
45	32-bit 32-bit PAE PAE
46	-------\|--------\|--------\|--------\|
47	PAE PAE PAE PAE
48	-------\|--------\|--------\|--------\|
49	AMD64 AMD64 AMD64 AMD64
50	-------\|--------\|--------\|--------\| @endverbatim
51	*
52	* All configuration except those in the diagonal (upper left) are expected to
53	* require special effort from the switcher (i.e. a bit slower).
54	*
55	*
56	*
57	*
58	* @section sec_pgm_shw The Shadow Memory Context
59	*
60	*
61	* [..]
62	*
63	* Because of guest context mappings requires PDPT and PML4 entries to allow
64	* writing on AMD64, the two upper levels will have fixed flags whatever the
65	* guest is thinking of using there. So, when shadowing the PD level we will
66	* calculate the effective flags of PD and all the higher levels. In legacy
67	* PAE mode this only applies to the PWT and PCD bits (the rest are
68	* ignored/reserved/MBZ). We will ignore those bits for the present.
69	*
70	*
71	*
72	* @section sec_pgm_int The Intermediate Memory Context
73	*
74	* The world switch goes thru an intermediate memory context which purpose it is
75	* to provide different mappings of the switcher code. All guest mappings are also
76	* present in this context.
77	*
78	* The switcher code is mapped at the same location as on the host, at an
79	* identity mapped location (physical equals virtual address), and at the
80	* hypervisor location. The identity mapped location is for when the world
81	* switches that involves disabling paging.
82	*
83	* PGM maintain page tables for 32-bit, PAE and AMD64 paging modes. This
84	* simplifies switching guest CPU mode and consistency at the cost of more
85	* code to do the work. All memory use for those page tables is located below
86	* 4GB (this includes page tables for guest context mappings).
87	*
88	*
89	* @subsection subsec_pgm_int_gc Guest Context Mappings
90	*
91	* During assignment and relocation of a guest context mapping the intermediate
92	* memory context is used to verify the new location.
93	*
94	* Guest context mappings are currently restricted to below 4GB, for reasons
95	* of simplicity. This may change when we implement AMD64 support.
96	*
97	*
98	*
99	*
100	* @section sec_pgm_misc Misc
101	*
102	* @subsection subsec_pgm_misc_diff Differences Between Legacy PAE and Long Mode PAE
103	*
104	* The differences between legacy PAE and long mode PAE are:
105	* -# PDPE bits 1, 2, 5 and 6 are defined differently. In leagcy mode they are
106	* all marked down as must-be-zero, while in long mode 1, 2 and 5 have the
107	* usual meanings while 6 is ignored (AMD). This means that upon switching to
108	* legacy PAE mode we'll have to clear these bits and when going to long mode
109	* they must be set. This applies to both intermediate and shadow contexts,
110	* however we don't need to do it for the intermediate one since we're
111	* executing with CR0.WP at that time.
112	* -# CR3 allows a 32-byte aligned address in legacy mode, while in long mode
113	* a page aligned one is required.
114	*
115	*
116	* @section sec_pgm_handlers Access Handlers
117	*
118	* Placeholder.
119	*
120	*
121	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
122	*
123	* Placeholder.
124	*
125	*
126	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
127	*
128	* We currently implement three types of virtual access handlers: ALL, WRITE
129	* and HYPERVISOR (WRITE). See PGMVIRTHANDLERTYPE for some more details.
130	*
131	* The HYPERVISOR access handlers is kept in a separate tree since it doesn't apply
132	* to physical pages (PGMTREES::HyperVirtHandlers) and only needs to be consulted in
133	* a special \#PF case. The ALL and WRITE are in the PGMTREES::VirtHandlers tree, the
134	* rest of this section is going to be about these handlers.
135	*
136	* We'll go thru the life cycle of a handler and try make sense of it all, don't know
137	* how successfull this is gonna be...
138	*
139	* 1. A handler is registered thru the PGMR3HandlerVirtualRegister and
140	* PGMHandlerVirtualRegisterEx APIs. We check for conflicting virtual handlers
141	* and create a new node that is inserted into the AVL tree (range key). Then
142	* a full PGM resync is flagged (clear pool, sync cr3, update virtual bit of PGMPAGE).
143	*
144	* 2. The following PGMSyncCR3/SyncCR3 operation will first make invoke HandlerVirtualUpdate.
145	*
146	* 2a. HandlerVirtualUpdate will will lookup all the pages covered by virtual handlers
147	* via the current guest CR3 and update the physical page -> virtual handler
148	* translation. Needless to say, this doesn't exactly scale very well. If any changes
149	* are detected, it will flag a virtual bit update just like we did on registration.
150	* PGMPHYS pages with changes will have their virtual handler state reset to NONE.
151	*
152	* 2b. The virtual bit update process will iterate all the pages covered by all the
153	* virtual handlers and update the PGMPAGE virtual handler state to the max of all
154	* virtual handlers on that page.
155	*
156	* 2c. Back in SyncCR3 we will now flush the entire shadow page cache to make sure
157	* we don't miss any alias mappings of the monitored pages.
158	*
159	* 2d. SyncCR3 will then proceed with syncing the CR3 table.
160	*
161	* 3. \#PF(np,read) on a page in the range. This will cause it to be synced
162	* read-only and resumed if it's a WRITE handler. If it's an ALL handler we
163	* will call the handlers like in the next step. If the physical mapping has
164	* changed we will - some time in the future - perform a handler callback
165	* (optional) and update the physical -> virtual handler cache.
166	*
167	* 4. \#PF(,write) on a page in the range. This will cause the handler to
168	* be invoked.
169	*
170	* 5. The guest invalidates the page and changes the physical backing or
171	* unmaps it. This should cause the invalidation callback to be invoked
172	* (it might not yet be 100% perfect). Exactly what happens next... is
173	* this where we mess up and end up out of sync for a while?
174	*
175	* 6. The handler is deregistered by the client via PGMHandlerVirtualDeregister.
176	* We will then set all PGMPAGEs in the physical -> virtual handler cache for
177	* this handler to NONE and trigger a full PGM resync (basically the same
178	* as int step 1). Which means 2 is executed again.
179	*
180	*
181	* @subsubsection sub_sec_pgm_handler_virt_todo TODOs
182	*
183	* There is a bunch of things that needs to be done to make the virtual handlers
184	* work 100% correctly and work more efficiently.
185	*
186	* The first bit hasn't been implemented yet because it's going to slow the
187	* whole mess down even more, and besides it seems to be working reliably for
188	* our current uses. OTOH, some of the optimizations might end up more or less
189	* implementing the missing bits, so we'll see.
190	*
191	* On the optimization side, the first thing to do is to try avoid unnecessary
192	* cache flushing. Then try team up with the shadowing code to track changes
193	* in mappings by means of access to them (shadow in), updates to shadows pages,
194	* invlpg, and shadow PT discarding (perhaps).
195	*
196	* Some idea that have popped up for optimization for current and new features:
197	* - bitmap indicating where there are virtual handlers installed.
198	* (4KB => 220 pages, page 212 => covers 32-bit address space 1:1!)
199	* - Further optimize this by min/max (needs min/max avl getters).
200	* - Shadow page table entry bit (if any left)?
201	*
202	*/
203
204
205	/** @page pg_pgm_phys PGM Physical Guest Memory Management
206	*
207	*
208	* Objectives:
209	* - Guest RAM over-commitment using memory ballooning,
210	* zero pages and general page sharing.
211	* - Moving or mirroring a VM onto a different physical machine.
212	*
213	*
214	* @subsection subsec_pgmPhys_Definitions Definitions
215	*
216	* Allocation chunk - A RTR0MemObjAllocPhysNC object and the tracking
217	* machinery assoicated with it.
218	*
219	*
220	*
221	*
222	* @subsection subsec_pgmPhys_AllocPage Allocating a page.
223	*
224	* Initially we map all guest memory to the (per VM) zero page, which
225	* means that none of the read functions will cause pages to be allocated.
226	*
227	* Exception, access bit in page tables that have been shared. This must
228	* be handled, but we must also make sure PGMGst*Modify doesn't make
229	* unnecessary modifications.
230	*
231	* Allocation points:
232	* - PGMPhysSimpleWriteGCPhys and PGMPhysWrite.
233	* - Replacing a zero page mapping at \#PF.
234	* - Replacing a shared page mapping at \#PF.
235	* - ROM registration (currently MMR3RomRegister).
236	* - VM restore (pgmR3Load).
237	*
238	* For the first three it would make sense to keep a few pages handy
239	* until we've reached the max memory commitment for the VM.
240	*
241	* For the ROM registration, we know exactly how many pages we need
242	* and will request these from ring-0. For restore, we will save
243	* the number of non-zero pages in the saved state and allocate
244	* them up front. This would allow the ring-0 component to refuse
245	* the request if the isn't sufficient memory available for VM use.
246	*
247	* Btw. for both ROM and restore allocations we won't be requiring
248	* zeroed pages as they are going to be filled instantly.
249	*
250	*
251	* @subsection subsec_pgmPhys_FreePage Freeing a page
252	*
253	* There are a few points where a page can be freed:
254	* - After being replaced by the zero page.
255	* - After being replaced by a shared page.
256	* - After being ballooned by the guest additions.
257	* - At reset.
258	* - At restore.
259	*
260	* When freeing one or more pages they will be returned to the ring-0
261	* component and replaced by the zero page.
262	*
263	* The reasoning for clearing out all the pages on reset is that it will
264	* return us to the exact same state as on power on, and may thereby help
265	* us reduce the memory load on the system. Further it might have a
266	* (temporary) positive influence on memory fragmentation (@see subsec_pgmPhys_Fragmentation).
267	*
268	* On restore, as mention under the allocation topic, pages should be
269	* freed / allocated depending on how many is actually required by the
270	* new VM state. The simplest approach is to do like on reset, and free
271	* all non-ROM pages and then allocate what we need.
272	*
273	* A measure to prevent some fragmentation, would be to let each allocation
274	* chunk have some affinity towards the VM having allocated the most pages
275	* from it. Also, try make sure to allocate from allocation chunks that
276	* are almost full. Admittedly, both these measures might work counter to
277	* our intentions and its probably not worth putting a lot of effort,
278	* cpu time or memory into this.
279	*
280	*
281	* @subsection subsec_pgmPhys_SharePage Sharing a page
282	*
283	* The basic idea is that there there will be a idle priority kernel
284	* thread walking the non-shared VM pages hashing them and looking for
285	* pages with the same checksum. If such pages are found, it will compare
286	* them byte-by-byte to see if they actually are identical. If found to be
287	* identical it will allocate a shared page, copy the content, check that
288	* the page didn't change while doing this, and finally request both the
289	* VMs to use the shared page instead. If the page is all zeros (special
290	* checksum and byte-by-byte check) it will request the VM that owns it
291	* to replace it with the zero page.
292	*
293	* To make this efficient, we will have to make sure not to try share a page
294	* that will change its contents soon. This part requires the most work.
295	* A simple idea would be to request the VM to write monitor the page for
296	* a while to make sure it isn't modified any time soon. Also, it may
297	* make sense to skip pages that are being write monitored since this
298	* information is readily available to the thread if it works on the
299	* per-VM guest memory structures (presently called PGMRAMRANGE).
300	*
301	*
302	* @subsection subsec_pgmPhys_Fragmentation Fragmentation Concerns and Counter Measures
303	*
304	* The pages are organized in allocation chunks in ring-0, this is a necessity
305	* if we wish to have an OS agnostic approach to this whole thing. (On Linux we
306	* could easily work on a page-by-page basis if we liked. Whether this is possible
307	* or efficient on NT I don't quite know.) Fragmentation within these chunks may
308	* become a problem as part of the idea here is that we wish to return memory to
309	* the host system.
310	*
311	* For instance, starting two VMs at the same time, they will both allocate the
312	* guest memory on-demand and if permitted their page allocations will be
313	* intermixed. Shut down one of the two VMs and it will be difficult to return
314	* any memory to the host system because the page allocation for the two VMs are
315	* mixed up in the same allocation chunks.
316	*
317	* To further complicate matters, when pages are freed because they have been
318	* ballooned or become shared/zero the whole idea is that the page is supposed
319	* to be reused by another VM or returned to the host system. This will cause
320	* allocation chunks to contain pages belonging to different VMs and prevent
321	* returning memory to the host when one of those VM shuts down.
322	*
323	* The only way to really deal with this problem is to move pages. This can
324	* either be done at VM shutdown and or by the idle priority worker thread
325	* that will be responsible for finding sharable/zero pages. The mechanisms
326	* involved for coercing a VM to move a page (or to do it for it) will be
327	* the same as when telling it to share/zero a page.
328	*
329	*
330	* @subsection subsec_pgmPhys_Tracking Tracking Structures And Their Cost
331	*
332	* There's a difficult balance between keeping the per-page tracking structures
333	* (global and guest page) easy to use and keeping them from eating too much
334	* memory. We have limited virtual memory resources available when operating in
335	* 32-bit kernel space (on 64-bit there'll it's quite a different story). The
336	* tracking structures will be attemted designed such that we can deal with up
337	* to 32GB of memory on a 32-bit system and essentially unlimited on 64-bit ones.
338	*
339	*
340	* @subsubsection subsubsec_pgmPhys_Tracking_Kernel Kernel Space
341	*
342	* @see pg_GMM
343	*
344	* @subsubsection subsubsec_pgmPhys_Tracking_PerVM Per-VM
345	*
346	* Fixed info is the physical address of the page (HCPhys) and the page id
347	* (described above). Theoretically we'll need 48(-12) bits for the HCPhys part.
348	* Today we've restricting ourselves to 40(-12) bits because this is the current
349	* restrictions of all AMD64 implementations (I think Barcelona will up this
350	* to 48(-12) bits, not that it really matters) and I needed the bits for
351	* tracking mappings of a page. 48-12 = 36. That leaves 28 bits, which means a
352	* decent range for the page id: 2^(28+12) = 1024TB.
353	*
354	* In additions to these, we'll have to keep maintaining the page flags as we
355	* currently do. Although it wouldn't harm to optimize these quite a bit, like
356	* for instance the ROM shouldn't depend on having a write handler installed
357	* in order for it to become read-only. A RO/RW bit should be considered so
358	* that the page syncing code doesn't have to mess about checking multiple
359	* flag combinations (ROM \|\| RW handler \|\| write monitored) in order to
360	* figure out how to setup a shadow PTE. But this of course, is second
361	* priority at present. Current this requires 12 bits, but could probably
362	* be optimized to ~8.
363	*
364	* Then there's the 24 bits used to track which shadow page tables are
365	* currently mapping a page for the purpose of speeding up physical
366	* access handlers, and thereby the page pool cache. More bit for this
367	* purpose wouldn't hurt IIRC.
368	*
369	* Then there is a new bit in which we need to record what kind of page
370	* this is, shared, zero, normal or write-monitored-normal. This'll
371	* require 2 bits. One bit might be needed for indicating whether a
372	* write monitored page has been written to. And yet another one or
373	* two for tracking migration status. 3-4 bits total then.
374	*
375	* Whatever is left will can be used to record the sharabilitiy of a
376	* page. The page checksum will not be stored in the per-VM table as
377	* the idle thread will not be permitted to do modifications to it.
378	* It will instead have to keep its own working set of potentially
379	* shareable pages and their check sums and stuff.
380	*
381	* For the present we'll keep the current packing of the
382	* PGMRAMRANGE::aHCPhys to keep the changes simple, only of course,
383	* we'll have to change it to a struct with a total of 128-bits at
384	* our disposal.
385	*
386	* The initial layout will be like this:
387	* @verbatim
388	RTHCPHYS HCPhys; The current stuff.
389	63:40 Current shadow PT tracking stuff.
390	39:12 The physical page frame number.
391	11:0 The current flags.
392	uint32_t u28PageId : 28; The page id.
393	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
394	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
395	uint32_t u1Reserved : 1; Reserved for later.
396	uint32_t u32Reserved; Reserved for later, mostly sharing stats.
397	@endverbatim
398	*
399	* The final layout will be something like this:
400	* @verbatim
401	RTHCPHYS HCPhys; The current stuff.
402	63:48 High page id (12+).
403	47:12 The physical page frame number.
404	11:0 Low page id.
405	uint32_t fReadOnly : 1; Whether it's readonly page (rom or monitored in some way).
406	uint32_t u3Type : 3; The page type {RESERVED, MMIO, MMIO2, ROM, shadowed ROM, RAM}.
407	uint32_t u2PhysMon : 2; Physical access handler type {none, read, write, all}.
408	uint32_t u2VirtMon : 2; Virtual access handler type {none, read, write, all}..
409	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
410	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
411	uint32_t u20Reserved : 20; Reserved for later, mostly sharing stats.
412	uint32_t u32Tracking; The shadow PT tracking stuff, roughly.
413	@endverbatim
414	*
415	* Cost wise, this means we'll double the cost for guest memory. There isn't anyway
416	* around that I'm afraid. It means that the cost of dealing out 32GB of memory
417	* to one or more VMs is: (32GB >> PAGE_SHIFT) * 16 bytes, or 128MBs. Or another
418	* example, the VM heap cost when assigning 1GB to a VM will be: 4MB.
419	*
420	* A couple of cost examples for the total cost per-VM + kernel.
421	* 32-bit Windows and 32-bit linux:
422	* 1GB guest ram, 256K pages: 4MB + 2MB(+) = 6MB
423	* 4GB guest ram, 1M pages: 16MB + 8MB(+) = 24MB
424	* 32GB guest ram, 8M pages: 128MB + 64MB(+) = 192MB
425	* 64-bit Windows and 64-bit linux:
426	* 1GB guest ram, 256K pages: 4MB + 3MB(+) = 7MB
427	* 4GB guest ram, 1M pages: 16MB + 12MB(+) = 28MB
428	* 32GB guest ram, 8M pages: 128MB + 96MB(+) = 224MB
429	*
430	* UPDATE - 2007-09-27:
431	* Will need a ballooned flag/state too because we cannot
432	* trust the guest 100% and reporting the same page as ballooned more
433	* than once will put the GMM off balance.
434	*
435	*
436	* @subsection subsec_pgmPhys_Serializing Serializing Access
437	*
438	* Initially, we'll try a simple scheme:
439	*
440	* - The per-VM RAM tracking structures (PGMRAMRANGE) is only modified
441	* by the EMT thread of that VM while in the pgm critsect.
442	* - Other threads in the VM process that needs to make reliable use of
443	* the per-VM RAM tracking structures will enter the critsect.
444	* - No process external thread or kernel thread will ever try enter
445	* the pgm critical section, as that just won't work.
446	* - The idle thread (and similar threads) doesn't not need 100% reliable
447	* data when performing it tasks as the EMT thread will be the one to
448	* do the actual changes later anyway. So, as long as it only accesses
449	* the main ram range, it can do so by somehow preventing the VM from
450	* being destroyed while it works on it...
451	*
452	* - The over-commitment management, including the allocating/freeing
453	* chunks, is serialized by a ring-0 mutex lock (a fast one since the
454	* more mundane mutex implementation is broken on Linux).
455	* - A separeate mutex is protecting the set of allocation chunks so
456	* that pages can be shared or/and freed up while some other VM is
457	* allocating more chunks. This mutex can be take from under the other
458	* one, but not the otherway around.
459	*
460	*
461	* @subsection subsec_pgmPhys_Request VM Request interface
462	*
463	* When in ring-0 it will become necessary to send requests to a VM so it can
464	* for instance move a page while defragmenting during VM destroy. The idle
465	* thread will make use of this interface to request VMs to setup shared
466	* pages and to perform write monitoring of pages.
467	*
468	* I would propose an interface similar to the current VMReq interface, similar
469	* in that it doesn't require locking and that the one sending the request may
470	* wait for completion if it wishes to. This shouldn't be very difficult to
471	* realize.
472	*
473	* The requests themselves are also pretty simple. They are basically:
474	* -# Check that some precondition is still true.
475	* -# Do the update.
476	* -# Update all shadow page tables involved with the page.
477	*
478	* The 3rd step is identical to what we're already doing when updating a
479	* physical handler, see pgmHandlerPhysicalSetRamFlagsAndFlushShadowPTs.
480	*
481	*
482	*
483	* @section sec_pgmPhys_MappingCaches Mapping Caches
484	*
485	* In order to be able to map in and out memory and to be able to support
486	* guest with more RAM than we've got virtual address space, we'll employing
487	* a mapping cache. There is already a tiny one for GC (see PGMGCDynMapGCPageEx)
488	* and we'll create a similar one for ring-0 unless we decide to setup a dedicate
489	* memory context for the HWACCM execution.
490	*
491	*
492	* @subsection subsec_pgmPhys_MappingCaches_R3 Ring-3
493	*
494	* We've considered implementing the ring-3 mapping cache page based but found
495	* that this was bother some when one had to take into account TLBs+SMP and
496	* portability (missing the necessary APIs on several platforms). There were
497	* also some performance concerns with this approach which hadn't quite been
498	* worked out.
499	*
500	* Instead, we'll be mapping allocation chunks into the VM process. This simplifies
501	* matters greatly quite a bit since we don't need to invent any new ring-0 stuff,
502	* only some minor RTR0MEMOBJ mapping stuff. The main concern here is that mapping
503	* compared to the previous idea is that mapping or unmapping a 1MB chunk is more
504	* costly than a single page, although how much more costly is uncertain. We'll
505	* try address this by using a very big cache, preferably bigger than the actual
506	* VM RAM size if possible. The current VM RAM sizes should give some idea for
507	* 32-bit boxes, while on 64-bit we can probably get away with employing an
508	* unlimited cache.
509	*
510	* The cache have to parts, as already indicated, the ring-3 side and the
511	* ring-0 side.
512	*
513	* The ring-0 will be tied to the page allocator since it will operate on the
514	* memory objects it contains. It will therefore require the first ring-0 mutex
515	* discussed in @ref subsec_pgmPhys_Serializing. We
516	* some double house keeping wrt to who has mapped what I think, since both
517	* VMMR0.r0 and RTR0MemObj will keep track of mapping relataions
518	*
519	* The ring-3 part will be protected by the pgm critsect. For simplicity, we'll
520	* require anyone that desires to do changes to the mapping cache to do that
521	* from within this critsect. Alternatively, we could employ a separate critsect
522	* for serializing changes to the mapping cache as this would reduce potential
523	* contention with other threads accessing mappings unrelated to the changes
524	* that are in process. We can see about this later, contention will show
525	* up in the statistics anyway, so it'll be simple to tell.
526	*
527	* The organization of the ring-3 part will be very much like how the allocation
528	* chunks are organized in ring-0, that is in an AVL tree by chunk id. To avoid
529	* having to walk the tree all the time, we'll have a couple of lookaside entries
530	* like in we do for I/O ports and MMIO in IOM.
531	*
532	* The simplified flow of a PGMPhysRead/Write function:
533	* -# Enter the PGM critsect.
534	* -# Lookup GCPhys in the ram ranges and get the Page ID.
535	* -# Calc the Allocation Chunk ID from the Page ID.
536	* -# Check the lookaside entries and then the AVL tree for the Chunk ID.
537	* If not found in cache:
538	* -# Call ring-0 and request it to be mapped and supply
539	* a chunk to be unmapped if the cache is maxed out already.
540	* -# Insert the new mapping into the AVL tree (id + R3 address).
541	* -# Update the relevant lookaside entry and return the mapping address.
542	* -# Do the read/write according to monitoring flags and everything.
543	* -# Leave the critsect.
544	*
545	*
546	* @section sec_pgmPhys_Fallback Fallback
547	*
548	* Current all the "second tier" hosts will not support the RTR0MemObjAllocPhysNC
549	* API and thus require a fallback.
550	*
551	* So, when RTR0MemObjAllocPhysNC returns VERR_NOT_SUPPORTED the page allocator
552	* will return to the ring-3 caller (and later ring-0) and asking it to seed
553	* the page allocator with some fresh pages (VERR_GMM_SEED_ME). Ring-3 will
554	* then perform an SUPPageAlloc(cbChunk >> PAGE_SHIFT) call and make a
555	* "SeededAllocPages" call to ring-0.
556	*
557	* The first time ring-0 sees the VERR_NOT_SUPPORTED failure it will disable
558	* all page sharing (zero page detection will continue). It will also force
559	* all allocations to come from the VM which seeded the page. Both these
560	* measures are taken to make sure that there will never be any need for
561	* mapping anything into ring-3 - everything will be mapped already.
562	*
563	* Whether we'll continue to use the current MM locked memory management
564	* for this I don't quite know (I'd prefer not to and just ditch that all
565	* togther), we'll see what's simplest to do.
566	*
567	*
568	*
569	* @section sec_pgmPhys_Changes Changes
570	*
571	* Breakdown of the changes involved?
572	*/
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	#ifdef DEBUG_bird
602	# include <iprt/env.h>
603	#endif
604	#include <VBox/param.h>
605	#include <VBox/err.h>
606
607
608	/*******************************************************************************
609	* Defined Constants And Macros *
610	*******************************************************************************/
611	/** Saved state data unit version for 2.5.x and later. */
612	#define PGM_SAVED_STATE_VERSION 9
613	/** Saved state data unit version for 2.2.2 and later. */
614	#define PGM_SAVED_STATE_VERSION_2_2_2 8
615	/** Saved state data unit version for 2.2.0. */
616	#define PGM_SAVED_STATE_VERSION_RR_DESC 7
617	/** Saved state data unit version. */
618	#define PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE 6
619
620
621	/*******************************************************************************
622	* Internal Functions *
623	*******************************************************************************/
624	static int pgmR3InitPaging(PVM pVM);
625	static void pgmR3InitStats(PVM pVM);
626	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
627	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
628	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
629	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser);
630	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
631	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
632	#ifdef VBOX_STRICT
633	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser);
634	#endif
635	static DECLCALLBACK(int) pgmR3Save(PVM pVM, PSSMHANDLE pSSM);
636	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version);
637	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0);
638	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst);
639	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher);
640
641	#ifdef VBOX_WITH_DEBUGGER
642	/** @todo Convert the first two commands to 'info' items. */
643	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
644	static DECLCALLBACK(int) pgmR3CmdMap(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
645	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
646	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
647	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
648	# ifdef VBOX_STRICT
649	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
650	# endif
651	#endif
652
653
654	/*******************************************************************************
655	* Global Variables *
656	*******************************************************************************/
657	#ifdef VBOX_WITH_DEBUGGER
658	/** Argument descriptors for '.pgmerror' and '.pgmerroroff'. */
659	static const DBGCVARDESC g_aPgmErrorArgs[] =
660	{
661	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
662	{ 0, 1, DBGCVAR_CAT_STRING, 0, "where", "Error injection location." },
663	};
664
665	/** Command descriptors. */
666	static const DBGCCMD g_aCmds[] =
667	{
668	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, pResultDesc, fFlags, pfnHandler pszSyntax, ....pszDescription */
669	{ "pgmram", 0, 0, NULL, 0, NULL, 0, pgmR3CmdRam, "", "Display the ram ranges." },
670	{ "pgmmap", 0, 0, NULL, 0, NULL, 0, pgmR3CmdMap, "", "Display the mapping ranges." },
671	{ "pgmsync", 0, 0, NULL, 0, NULL, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
672	{ "pgmerror", 0, 1, &g_aPgmErrorArgs[0],1, NULL, 0, pgmR3CmdError, "", "Enables inject runtime of errors into parts of PGM." },
673	{ "pgmerroroff", 0, 1, &g_aPgmErrorArgs[0],1, NULL, 0, pgmR3CmdError, "", "Disables inject runtime errors into parts of PGM." },
674	#ifdef VBOX_STRICT
675	{ "pgmassertcr3", 0, 0, NULL, 0, NULL, 0, pgmR3CmdAssertCR3, "", "Check the shadow CR3 mapping." },
676	#endif
677	{ "pgmsyncalways", 0, 0, NULL, 0, NULL, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
678	};
679	#endif
680
681
682
683
684	/*
685	* Shadow - 32-bit mode
686	*/
687	#define PGM_SHW_TYPE PGM_TYPE_32BIT
688	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
689	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_32BIT_STR(name)
690	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_32BIT_STR(name)
691	#include "PGMShw.h"
692
693	/* Guest - real mode */
694	#define PGM_GST_TYPE PGM_TYPE_REAL
695	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
696	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
697	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
698	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
699	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_REAL_STR(name)
700	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_REAL_STR(name)
701	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
702	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
703	#include "PGMBth.h"
704	#include "PGMGstDefs.h"
705	#include "PGMGst.h"
706	#undef BTH_PGMPOOLKIND_PT_FOR_PT
707	#undef BTH_PGMPOOLKIND_ROOT
708	#undef PGM_BTH_NAME
709	#undef PGM_BTH_NAME_RC_STR
710	#undef PGM_BTH_NAME_R0_STR
711	#undef PGM_GST_TYPE
712	#undef PGM_GST_NAME
713	#undef PGM_GST_NAME_RC_STR
714	#undef PGM_GST_NAME_R0_STR
715
716	/* Guest - protected mode */
717	#define PGM_GST_TYPE PGM_TYPE_PROT
718	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
719	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
720	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
721	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
722	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_PROT_STR(name)
723	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_PROT_STR(name)
724	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
725	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
726	#include "PGMBth.h"
727	#include "PGMGstDefs.h"
728	#include "PGMGst.h"
729	#undef BTH_PGMPOOLKIND_PT_FOR_PT
730	#undef BTH_PGMPOOLKIND_ROOT
731	#undef PGM_BTH_NAME
732	#undef PGM_BTH_NAME_RC_STR
733	#undef PGM_BTH_NAME_R0_STR
734	#undef PGM_GST_TYPE
735	#undef PGM_GST_NAME
736	#undef PGM_GST_NAME_RC_STR
737	#undef PGM_GST_NAME_R0_STR
738
739	/* Guest - 32-bit mode */
740	#define PGM_GST_TYPE PGM_TYPE_32BIT
741	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
742	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
743	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
744	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
745	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_32BIT_STR(name)
746	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_32BIT_STR(name)
747	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
748	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
749	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD
750	#include "PGMBth.h"
751	#include "PGMGstDefs.h"
752	#include "PGMGst.h"
753	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
754	#undef BTH_PGMPOOLKIND_PT_FOR_PT
755	#undef BTH_PGMPOOLKIND_ROOT
756	#undef PGM_BTH_NAME
757	#undef PGM_BTH_NAME_RC_STR
758	#undef PGM_BTH_NAME_R0_STR
759	#undef PGM_GST_TYPE
760	#undef PGM_GST_NAME
761	#undef PGM_GST_NAME_RC_STR
762	#undef PGM_GST_NAME_R0_STR
763
764	#undef PGM_SHW_TYPE
765	#undef PGM_SHW_NAME
766	#undef PGM_SHW_NAME_RC_STR
767	#undef PGM_SHW_NAME_R0_STR
768
769
770	/*
771	* Shadow - PAE mode
772	*/
773	#define PGM_SHW_TYPE PGM_TYPE_PAE
774	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
775	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_PAE_STR(name)
776	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_PAE_STR(name)
777	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
778	#include "PGMShw.h"
779
780	/* Guest - real mode */
781	#define PGM_GST_TYPE PGM_TYPE_REAL
782	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
783	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
784	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
785	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
786	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_REAL_STR(name)
787	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_REAL_STR(name)
788	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
789	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
790	#include "PGMGstDefs.h"
791	#include "PGMBth.h"
792	#undef BTH_PGMPOOLKIND_PT_FOR_PT
793	#undef BTH_PGMPOOLKIND_ROOT
794	#undef PGM_BTH_NAME
795	#undef PGM_BTH_NAME_RC_STR
796	#undef PGM_BTH_NAME_R0_STR
797	#undef PGM_GST_TYPE
798	#undef PGM_GST_NAME
799	#undef PGM_GST_NAME_RC_STR
800	#undef PGM_GST_NAME_R0_STR
801
802	/* Guest - protected mode */
803	#define PGM_GST_TYPE PGM_TYPE_PROT
804	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
805	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
806	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
807	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
808	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PROT_STR(name)
809	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PROT_STR(name)
810	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
811	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
812	#include "PGMGstDefs.h"
813	#include "PGMBth.h"
814	#undef BTH_PGMPOOLKIND_PT_FOR_PT
815	#undef BTH_PGMPOOLKIND_ROOT
816	#undef PGM_BTH_NAME
817	#undef PGM_BTH_NAME_RC_STR
818	#undef PGM_BTH_NAME_R0_STR
819	#undef PGM_GST_TYPE
820	#undef PGM_GST_NAME
821	#undef PGM_GST_NAME_RC_STR
822	#undef PGM_GST_NAME_R0_STR
823
824	/* Guest - 32-bit mode */
825	#define PGM_GST_TYPE PGM_TYPE_32BIT
826	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
827	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
828	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
829	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
830	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_32BIT_STR(name)
831	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_32BIT_STR(name)
832	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
833	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
834	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_FOR_32BIT
835	#include "PGMGstDefs.h"
836	#include "PGMBth.h"
837	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
838	#undef BTH_PGMPOOLKIND_PT_FOR_PT
839	#undef BTH_PGMPOOLKIND_ROOT
840	#undef PGM_BTH_NAME
841	#undef PGM_BTH_NAME_RC_STR
842	#undef PGM_BTH_NAME_R0_STR
843	#undef PGM_GST_TYPE
844	#undef PGM_GST_NAME
845	#undef PGM_GST_NAME_RC_STR
846	#undef PGM_GST_NAME_R0_STR
847
848	/* Guest - PAE mode */
849	#define PGM_GST_TYPE PGM_TYPE_PAE
850	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
851	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
852	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
853	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
854	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PAE_STR(name)
855	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PAE_STR(name)
856	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
857	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
858	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT
859	#include "PGMBth.h"
860	#include "PGMGstDefs.h"
861	#include "PGMGst.h"
862	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
863	#undef BTH_PGMPOOLKIND_PT_FOR_PT
864	#undef BTH_PGMPOOLKIND_ROOT
865	#undef PGM_BTH_NAME
866	#undef PGM_BTH_NAME_RC_STR
867	#undef PGM_BTH_NAME_R0_STR
868	#undef PGM_GST_TYPE
869	#undef PGM_GST_NAME
870	#undef PGM_GST_NAME_RC_STR
871	#undef PGM_GST_NAME_R0_STR
872
873	#undef PGM_SHW_TYPE
874	#undef PGM_SHW_NAME
875	#undef PGM_SHW_NAME_RC_STR
876	#undef PGM_SHW_NAME_R0_STR
877
878
879	/*
880	* Shadow - AMD64 mode
881	*/
882	#define PGM_SHW_TYPE PGM_TYPE_AMD64
883	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
884	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_AMD64_STR(name)
885	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_AMD64_STR(name)
886	#include "PGMShw.h"
887
888	#ifdef VBOX_WITH_64_BITS_GUESTS
889	/* Guest - AMD64 mode */
890	# define PGM_GST_TYPE PGM_TYPE_AMD64
891	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
892	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
893	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
894	# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
895	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_AMD64_AMD64_STR(name)
896	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_AMD64_AMD64_STR(name)
897	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
898	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
899	# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_64BIT_PML4
900	# include "PGMBth.h"
901	# include "PGMGstDefs.h"
902	# include "PGMGst.h"
903	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
904	# undef BTH_PGMPOOLKIND_PT_FOR_PT
905	# undef BTH_PGMPOOLKIND_ROOT
906	# undef PGM_BTH_NAME
907	# undef PGM_BTH_NAME_RC_STR
908	# undef PGM_BTH_NAME_R0_STR
909	# undef PGM_GST_TYPE
910	# undef PGM_GST_NAME
911	# undef PGM_GST_NAME_RC_STR
912	# undef PGM_GST_NAME_R0_STR
913	#endif /* VBOX_WITH_64_BITS_GUESTS */
914
915	#undef PGM_SHW_TYPE
916	#undef PGM_SHW_NAME
917	#undef PGM_SHW_NAME_RC_STR
918	#undef PGM_SHW_NAME_R0_STR
919
920
921	/*
922	* Shadow - Nested paging mode
923	*/
924	#define PGM_SHW_TYPE PGM_TYPE_NESTED
925	#define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
926	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_NESTED_STR(name)
927	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_NESTED_STR(name)
928	#include "PGMShw.h"
929
930	/* Guest - real mode */
931	#define PGM_GST_TYPE PGM_TYPE_REAL
932	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
933	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
934	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
935	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
936	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_REAL_STR(name)
937	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_REAL_STR(name)
938	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
939	#include "PGMGstDefs.h"
940	#include "PGMBth.h"
941	#undef BTH_PGMPOOLKIND_PT_FOR_PT
942	#undef PGM_BTH_NAME
943	#undef PGM_BTH_NAME_RC_STR
944	#undef PGM_BTH_NAME_R0_STR
945	#undef PGM_GST_TYPE
946	#undef PGM_GST_NAME
947	#undef PGM_GST_NAME_RC_STR
948	#undef PGM_GST_NAME_R0_STR
949
950	/* Guest - protected mode */
951	#define PGM_GST_TYPE PGM_TYPE_PROT
952	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
953	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
954	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
955	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
956	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PROT_STR(name)
957	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PROT_STR(name)
958	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
959	#include "PGMGstDefs.h"
960	#include "PGMBth.h"
961	#undef BTH_PGMPOOLKIND_PT_FOR_PT
962	#undef PGM_BTH_NAME
963	#undef PGM_BTH_NAME_RC_STR
964	#undef PGM_BTH_NAME_R0_STR
965	#undef PGM_GST_TYPE
966	#undef PGM_GST_NAME
967	#undef PGM_GST_NAME_RC_STR
968	#undef PGM_GST_NAME_R0_STR
969
970	/* Guest - 32-bit mode */
971	#define PGM_GST_TYPE PGM_TYPE_32BIT
972	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
973	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
974	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
975	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
976	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_32BIT_STR(name)
977	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_32BIT_STR(name)
978	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
979	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
980	#include "PGMGstDefs.h"
981	#include "PGMBth.h"
982	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
983	#undef BTH_PGMPOOLKIND_PT_FOR_PT
984	#undef PGM_BTH_NAME
985	#undef PGM_BTH_NAME_RC_STR
986	#undef PGM_BTH_NAME_R0_STR
987	#undef PGM_GST_TYPE
988	#undef PGM_GST_NAME
989	#undef PGM_GST_NAME_RC_STR
990	#undef PGM_GST_NAME_R0_STR
991
992	/* Guest - PAE mode */
993	#define PGM_GST_TYPE PGM_TYPE_PAE
994	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
995	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
996	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
997	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
998	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PAE_STR(name)
999	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PAE_STR(name)
1000	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1001	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1002	#include "PGMGstDefs.h"
1003	#include "PGMBth.h"
1004	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1005	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1006	#undef PGM_BTH_NAME
1007	#undef PGM_BTH_NAME_RC_STR
1008	#undef PGM_BTH_NAME_R0_STR
1009	#undef PGM_GST_TYPE
1010	#undef PGM_GST_NAME
1011	#undef PGM_GST_NAME_RC_STR
1012	#undef PGM_GST_NAME_R0_STR
1013
1014	#ifdef VBOX_WITH_64_BITS_GUESTS
1015	/* Guest - AMD64 mode */
1016	# define PGM_GST_TYPE PGM_TYPE_AMD64
1017	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1018	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1019	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1020	# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
1021	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_AMD64_STR(name)
1022	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_AMD64_STR(name)
1023	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1024	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1025	# include "PGMGstDefs.h"
1026	# include "PGMBth.h"
1027	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1028	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1029	# undef PGM_BTH_NAME
1030	# undef PGM_BTH_NAME_RC_STR
1031	# undef PGM_BTH_NAME_R0_STR
1032	# undef PGM_GST_TYPE
1033	# undef PGM_GST_NAME
1034	# undef PGM_GST_NAME_RC_STR
1035	# undef PGM_GST_NAME_R0_STR
1036	#endif /* VBOX_WITH_64_BITS_GUESTS */
1037
1038	#undef PGM_SHW_TYPE
1039	#undef PGM_SHW_NAME
1040	#undef PGM_SHW_NAME_RC_STR
1041	#undef PGM_SHW_NAME_R0_STR
1042
1043
1044	/*
1045	* Shadow - EPT
1046	*/
1047	#define PGM_SHW_TYPE PGM_TYPE_EPT
1048	#define PGM_SHW_NAME(name) PGM_SHW_NAME_EPT(name)
1049	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_EPT_STR(name)
1050	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_EPT_STR(name)
1051	#include "PGMShw.h"
1052
1053	/* Guest - real mode */
1054	#define PGM_GST_TYPE PGM_TYPE_REAL
1055	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
1056	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
1057	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
1058	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_REAL(name)
1059	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_REAL_STR(name)
1060	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_REAL_STR(name)
1061	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1062	#include "PGMGstDefs.h"
1063	#include "PGMBth.h"
1064	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1065	#undef PGM_BTH_NAME
1066	#undef PGM_BTH_NAME_RC_STR
1067	#undef PGM_BTH_NAME_R0_STR
1068	#undef PGM_GST_TYPE
1069	#undef PGM_GST_NAME
1070	#undef PGM_GST_NAME_RC_STR
1071	#undef PGM_GST_NAME_R0_STR
1072
1073	/* Guest - protected mode */
1074	#define PGM_GST_TYPE PGM_TYPE_PROT
1075	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
1076	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
1077	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
1078	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PROT(name)
1079	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PROT_STR(name)
1080	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PROT_STR(name)
1081	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1082	#include "PGMGstDefs.h"
1083	#include "PGMBth.h"
1084	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1085	#undef PGM_BTH_NAME
1086	#undef PGM_BTH_NAME_RC_STR
1087	#undef PGM_BTH_NAME_R0_STR
1088	#undef PGM_GST_TYPE
1089	#undef PGM_GST_NAME
1090	#undef PGM_GST_NAME_RC_STR
1091	#undef PGM_GST_NAME_R0_STR
1092
1093	/* Guest - 32-bit mode */
1094	#define PGM_GST_TYPE PGM_TYPE_32BIT
1095	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1096	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1097	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1098	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_32BIT(name)
1099	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_32BIT_STR(name)
1100	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_32BIT_STR(name)
1101	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1102	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1103	#include "PGMGstDefs.h"
1104	#include "PGMBth.h"
1105	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1106	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1107	#undef PGM_BTH_NAME
1108	#undef PGM_BTH_NAME_RC_STR
1109	#undef PGM_BTH_NAME_R0_STR
1110	#undef PGM_GST_TYPE
1111	#undef PGM_GST_NAME
1112	#undef PGM_GST_NAME_RC_STR
1113	#undef PGM_GST_NAME_R0_STR
1114
1115	/* Guest - PAE mode */
1116	#define PGM_GST_TYPE PGM_TYPE_PAE
1117	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1118	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1119	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1120	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PAE(name)
1121	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PAE_STR(name)
1122	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PAE_STR(name)
1123	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1124	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1125	#include "PGMGstDefs.h"
1126	#include "PGMBth.h"
1127	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1128	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1129	#undef PGM_BTH_NAME
1130	#undef PGM_BTH_NAME_RC_STR
1131	#undef PGM_BTH_NAME_R0_STR
1132	#undef PGM_GST_TYPE
1133	#undef PGM_GST_NAME
1134	#undef PGM_GST_NAME_RC_STR
1135	#undef PGM_GST_NAME_R0_STR
1136
1137	#ifdef VBOX_WITH_64_BITS_GUESTS
1138	/* Guest - AMD64 mode */
1139	# define PGM_GST_TYPE PGM_TYPE_AMD64
1140	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1141	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1142	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1143	# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_AMD64(name)
1144	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_AMD64_STR(name)
1145	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_AMD64_STR(name)
1146	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1147	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1148	# include "PGMGstDefs.h"
1149	# include "PGMBth.h"
1150	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1151	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1152	# undef PGM_BTH_NAME
1153	# undef PGM_BTH_NAME_RC_STR
1154	# undef PGM_BTH_NAME_R0_STR
1155	# undef PGM_GST_TYPE
1156	# undef PGM_GST_NAME
1157	# undef PGM_GST_NAME_RC_STR
1158	# undef PGM_GST_NAME_R0_STR
1159	#endif /* VBOX_WITH_64_BITS_GUESTS */
1160
1161	#undef PGM_SHW_TYPE
1162	#undef PGM_SHW_NAME
1163	#undef PGM_SHW_NAME_RC_STR
1164	#undef PGM_SHW_NAME_R0_STR
1165
1166
1167
1168	/**
1169	* Initiates the paging of VM.
1170	*
1171	* @returns VBox status code.
1172	* @param pVM Pointer to VM structure.
1173	*/
1174	VMMR3DECL(int) PGMR3Init(PVM pVM)
1175	{
1176	LogFlow(("PGMR3Init:\n"));
1177	PCFGMNODE pCfgPGM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM");
1178	int rc;
1179
1180	/*
1181	* Assert alignment and sizes.
1182	*/
1183	AssertCompile(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
1184	AssertCompileMemberAlignment(PGM, CritSect, sizeof(uintptr_t));
1185
1186	/*
1187	* Init the structure.
1188	*/
1189	pVM->pgm.s.offVM = RT_OFFSETOF(VM, pgm.s);
1190	pVM->pgm.s.offVCpuPGM = RT_OFFSETOF(VMCPU, pgm.s);
1191
1192	/* Init the per-CPU part. */
1193	for (unsigned i=0;i<pVM->cCPUs;i++)
1194	{
1195	PVMCPU pVCpu = &pVM->aCpus[i];
1196	PPGMCPU pPGM = &pVCpu->pgm.s;
1197
1198	pPGM->offVM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)pVM;
1199	pPGM->offVCpu = RT_OFFSETOF(VMCPU, pgm.s);
1200	pPGM->offPGM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)&pVM->pgm.s;
1201
1202	pPGM->enmShadowMode = PGMMODE_INVALID;
1203	pPGM->enmGuestMode = PGMMODE_INVALID;
1204
1205	pPGM->GCPhysCR3 = NIL_RTGCPHYS;
1206
1207	pPGM->pGstPaePdptR3 = NULL;
1208	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1209	pPGM->pGstPaePdptR0 = NIL_RTR0PTR;
1210	#endif
1211	pPGM->pGstPaePdptRC = NIL_RTRCPTR;
1212	for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsR3); i++)
1213	{
1214	pPGM->apGstPaePDsR3[i] = NULL;
1215	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1216	pPGM->apGstPaePDsR0[i] = NIL_RTR0PTR;
1217	#endif
1218	pPGM->apGstPaePDsRC[i] = NIL_RTRCPTR;
1219	pPGM->aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
1220	pPGM->aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
1221	}
1222
1223	pPGM->fA20Enabled = true;
1224	}
1225
1226	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1227	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1; /* default; checked later */
1228	pVM->pgm.s.GCPtrPrevRamRangeMapping = MM_HYPER_AREA_ADDRESS;
1229
1230	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "RamPreAlloc", &pVM->pgm.s.fRamPreAlloc,
1231	#ifdef VBOX_WITH_PREALLOC_RAM_BY_DEFAULT
1232	true
1233	#else
1234	false
1235	#endif
1236	);
1237	AssertLogRelRCReturn(rc, rc);
1238
1239	#if HC_ARCH_BITS == 64 \|\| 1 /** @todo 4GB/32-bit: remove \|\| 1 later and adjust the limit. */
1240	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, UINT32_MAX);
1241	#else
1242	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE);
1243	#endif
1244	AssertLogRelRCReturn(rc, rc);
1245	for (uint32_t i = 0; i < RT_ELEMENTS(pVM->pgm.s.ChunkR3Map.Tlb.aEntries); i++)
1246	pVM->pgm.s.ChunkR3Map.Tlb.aEntries[i].idChunk = NIL_GMM_CHUNKID;
1247
1248	/*
1249	* Get the configured RAM size - to estimate saved state size.
1250	*/
1251	uint64_t cbRam;
1252	rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
1253	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1254	cbRam = 0;
1255	else if (RT_SUCCESS(rc))
1256	{
1257	if (cbRam < PAGE_SIZE)
1258	cbRam = 0;
1259	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
1260	}
1261	else
1262	{
1263	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc));
1264	return rc;
1265	}
1266
1267	/*
1268	* Register callbacks, string formatters and the saved state data unit.
1269	*/
1270	#ifdef VBOX_STRICT
1271	VMR3AtStateRegister(pVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
1272	#endif
1273	PGMRegisterStringFormatTypes();
1274
1275	rc = SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
1276	NULL, pgmR3Save, NULL,
1277	NULL, pgmR3Load, NULL);
1278	if (RT_FAILURE(rc))
1279	return rc;
1280
1281	/*
1282	* Initialize the PGM critical section and flush the phys TLBs
1283	*/
1284	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSect, "PGM");
1285	AssertRCReturn(rc, rc);
1286
1287	PGMR3PhysChunkInvalidateTLB(pVM);
1288	PGMPhysInvalidatePageR3MapTLB(pVM);
1289	PGMPhysInvalidatePageR0MapTLB(pVM);
1290	PGMPhysInvalidatePageGCMapTLB(pVM);
1291
1292	/*
1293	* For the time being we sport a full set of handy pages in addition to the base
1294	* memory to simplify things.
1295	*/
1296	rc = MMR3ReserveHandyPages(pVM, RT_ELEMENTS(pVM->pgm.s.aHandyPages)); /** @todo this should be changed to PGM_HANDY_PAGES_MIN but this needs proper testing... */
1297	AssertRCReturn(rc, rc);
1298
1299	/*
1300	* Trees
1301	*/
1302	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesR3);
1303	if (RT_SUCCESS(rc))
1304	{
1305	pVM->pgm.s.pTreesR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pTreesR3);
1306	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
1307
1308	/*
1309	* Alocate the zero page.
1310	*/
1311	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
1312	}
1313	if (RT_SUCCESS(rc))
1314	{
1315	pVM->pgm.s.pvZeroPgRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pvZeroPgR3);
1316	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1317	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
1318	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
1319
1320	/*
1321	* Init the paging.
1322	*/
1323	rc = pgmR3InitPaging(pVM);
1324	}
1325	if (RT_SUCCESS(rc))
1326	{
1327	/*
1328	* Init the page pool.
1329	*/
1330	rc = pgmR3PoolInit(pVM);
1331	}
1332	if (RT_SUCCESS(rc))
1333	{
1334	for (unsigned i=0;i<pVM->cCPUs;i++)
1335	{
1336	PVMCPU pVCpu = &pVM->aCpus[i];
1337
1338	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
1339	if (RT_FAILURE(rc))
1340	break;
1341	}
1342	}
1343
1344	if (RT_SUCCESS(rc))
1345	{
1346	/*
1347	* Info & statistics
1348	*/
1349	DBGFR3InfoRegisterInternal(pVM, "mode",
1350	"Shows the current paging mode. "
1351	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing's given.",
1352	pgmR3InfoMode);
1353	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
1354	"Dumps all the entries in the top level paging table. No arguments.",
1355	pgmR3InfoCr3);
1356	DBGFR3InfoRegisterInternal(pVM, "phys",
1357	"Dumps all the physical address ranges. No arguments.",
1358	pgmR3PhysInfo);
1359	DBGFR3InfoRegisterInternal(pVM, "handlers",
1360	"Dumps physical, virtual and hyper virtual handlers. "
1361	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
1362	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
1363	pgmR3InfoHandlers);
1364	DBGFR3InfoRegisterInternal(pVM, "mappings",
1365	"Dumps guest mappings.",
1366	pgmR3MapInfo);
1367
1368	pgmR3InitStats(pVM);
1369
1370	#ifdef VBOX_WITH_DEBUGGER
1371	/*
1372	* Debugger commands.
1373	*/
1374	static bool s_fRegisteredCmds = false;
1375	if (!s_fRegisteredCmds)
1376	{
1377	int rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
1378	if (RT_SUCCESS(rc))
1379	s_fRegisteredCmds = true;
1380	}
1381	#endif
1382	return VINF_SUCCESS;
1383	}
1384
1385	/* Almost no cleanup necessary, MM frees all memory. */
1386	PDMR3CritSectDelete(&pVM->pgm.s.CritSect);
1387
1388	return rc;
1389	}
1390
1391
1392	/**
1393	* Initializes the per-VCPU PGM.
1394	*
1395	* @returns VBox status code.
1396	* @param pVM The VM to operate on.
1397	*/
1398	VMMR3DECL(int) PGMR3InitCPU(PVM pVM)
1399	{
1400	LogFlow(("PGMR3InitCPU\n"));
1401	return VINF_SUCCESS;
1402	}
1403
1404
1405	/**
1406	* Init paging.
1407	*
1408	* Since we need to check what mode the host is operating in before we can choose
1409	* the right paging functions for the host we have to delay this until R0 has
1410	* been initialized.
1411	*
1412	* @returns VBox status code.
1413	* @param pVM VM handle.
1414	*/
1415	static int pgmR3InitPaging(PVM pVM)
1416	{
1417	/*
1418	* Force a recalculation of modes and switcher so everyone gets notified.
1419	*/
1420	for (unsigned i=0;i<pVM->cCPUs;i++)
1421	{
1422	PVMCPU pVCpu = &pVM->aCpus[i];
1423
1424	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
1425	pVCpu->pgm.s.enmGuestMode = PGMMODE_INVALID;
1426	}
1427
1428	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1429
1430	/*
1431	* Allocate static mapping space for whatever the cr3 register
1432	* points to and in the case of PAE mode to the 4 PDs.
1433	*/
1434	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * 5, "CR3 mapping", &pVM->pgm.s.GCPtrCR3Mapping);
1435	if (RT_FAILURE(rc))
1436	{
1437	AssertMsgFailed(("Failed to reserve two pages for cr mapping in HMA, rc=%Rrc\n", rc));
1438	return rc;
1439	}
1440	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1441
1442	/*
1443	* Allocate pages for the three possible intermediate contexts
1444	* (AMD64, PAE and plain 32-Bit). We maintain all three contexts
1445	* for the sake of simplicity. The AMD64 uses the PAE for the
1446	* lower levels, making the total number of pages 11 (3 + 7 + 1).
1447	*
1448	* We assume that two page tables will be enought for the core code
1449	* mappings (HC virtual and identity).
1450	*/
1451	pVM->pgm.s.pInterPD = (PX86PD)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPD, VERR_NO_PAGE_MEMORY);
1452	pVM->pgm.s.apInterPTs[0] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[0], VERR_NO_PAGE_MEMORY);
1453	pVM->pgm.s.apInterPTs[1] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[1], VERR_NO_PAGE_MEMORY);
1454	pVM->pgm.s.apInterPaePTs[0] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[0], VERR_NO_PAGE_MEMORY);
1455	pVM->pgm.s.apInterPaePTs[1] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[1], VERR_NO_PAGE_MEMORY);
1456	pVM->pgm.s.apInterPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[0], VERR_NO_PAGE_MEMORY);
1457	pVM->pgm.s.apInterPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[1], VERR_NO_PAGE_MEMORY);
1458	pVM->pgm.s.apInterPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[2], VERR_NO_PAGE_MEMORY);
1459	pVM->pgm.s.apInterPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[3], VERR_NO_PAGE_MEMORY);
1460	pVM->pgm.s.pInterPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT, VERR_NO_PAGE_MEMORY);
1461	pVM->pgm.s.pInterPaePDPT64 = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT64, VERR_NO_PAGE_MEMORY);
1462	pVM->pgm.s.pInterPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePML4, VERR_NO_PAGE_MEMORY);
1463
1464	pVM->pgm.s.HCPhysInterPD = MMPage2Phys(pVM, pVM->pgm.s.pInterPD);
1465	AssertRelease(pVM->pgm.s.HCPhysInterPD != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPD & PAGE_OFFSET_MASK));
1466	pVM->pgm.s.HCPhysInterPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT);
1467	AssertRelease(pVM->pgm.s.HCPhysInterPaePDPT != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePDPT & PAGE_OFFSET_MASK));
1468	pVM->pgm.s.HCPhysInterPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePML4);
1469	AssertRelease(pVM->pgm.s.HCPhysInterPaePML4 != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePML4 & PAGE_OFFSET_MASK) && pVM->pgm.s.HCPhysInterPaePML4 < 0xffffffff);
1470
1471	/*
1472	* Initialize the pages, setting up the PML4 and PDPT for repetitive 4GB action.
1473	*/
1474	ASMMemZeroPage(pVM->pgm.s.pInterPD);
1475	ASMMemZeroPage(pVM->pgm.s.apInterPTs[0]);
1476	ASMMemZeroPage(pVM->pgm.s.apInterPTs[1]);
1477
1478	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[0]);
1479	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[1]);
1480
1481	ASMMemZeroPage(pVM->pgm.s.pInterPaePDPT);
1482	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.apInterPaePDs); i++)
1483	{
1484	ASMMemZeroPage(pVM->pgm.s.apInterPaePDs[i]);
1485	pVM->pgm.s.pInterPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT
1486	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[i]);
1487	}
1488
1489	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePDPT64->a); i++)
1490	{
1491	const unsigned iPD = i % RT_ELEMENTS(pVM->pgm.s.apInterPaePDs);
1492	pVM->pgm.s.pInterPaePDPT64->a[i].u = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A \| PGM_PLXFLAGS_PERMANENT
1493	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[iPD]);
1494	}
1495
1496	RTHCPHYS HCPhysInterPaePDPT64 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64);
1497	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePML4->a); i++)
1498	pVM->pgm.s.pInterPaePML4->a[i].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A \| PGM_PLXFLAGS_PERMANENT
1499	\| HCPhysInterPaePDPT64;
1500
1501	/*
1502	* Initialize paging workers and mode from current host mode
1503	* and the guest running in real mode.
1504	*/
1505	pVM->pgm.s.enmHostMode = SUPGetPagingMode();
1506	switch (pVM->pgm.s.enmHostMode)
1507	{
1508	case SUPPAGINGMODE_32_BIT:
1509	case SUPPAGINGMODE_32_BIT_GLOBAL:
1510	case SUPPAGINGMODE_PAE:
1511	case SUPPAGINGMODE_PAE_GLOBAL:
1512	case SUPPAGINGMODE_PAE_NX:
1513	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1514	break;
1515
1516	case SUPPAGINGMODE_AMD64:
1517	case SUPPAGINGMODE_AMD64_GLOBAL:
1518	case SUPPAGINGMODE_AMD64_NX:
1519	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1520	#ifndef VBOX_WITH_HYBRID_32BIT_KERNEL
1521	if (ARCH_BITS != 64)
1522	{
1523	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1524	LogRel(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1525	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1526	}
1527	#endif
1528	break;
1529	default:
1530	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1531	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1532	}
1533	rc = pgmR3ModeDataInit(pVM, false /* don't resolve GC and R0 syms yet */);
1534	if (RT_SUCCESS(rc))
1535	{
1536	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1537	#if HC_ARCH_BITS == 64
1538	LogRel(("Debug: HCPhysInterPD=%RHp HCPhysInterPaePDPT=%RHp HCPhysInterPaePML4=%RHp\n",
1539	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1540	LogRel(("Debug: apInterPTs={%RHp,%RHp} apInterPaePTs={%RHp,%RHp} apInterPaePDs={%RHp,%RHp,%RHp,%RHp} pInterPaePDPT64=%RHp\n",
1541	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1542	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1543	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]),
1544	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1545	#endif
1546
1547	return VINF_SUCCESS;
1548	}
1549
1550	LogFlow(("pgmR3InitPaging: returns %Rrc\n", rc));
1551	return rc;
1552	}
1553
1554
1555	/**
1556	* Init statistics
1557	*/
1558	static void pgmR3InitStats(PVM pVM)
1559	{
1560	PPGM pPGM = &pVM->pgm.s;
1561	int rc;
1562
1563	/* Common - misc variables */
1564	STAM_REL_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_OCCURENCES, "The total number of pages.");
1565	STAM_REL_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_OCCURENCES, "The number of private pages.");
1566	STAM_REL_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_OCCURENCES, "The number of shared pages.");
1567	STAM_REL_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_OCCURENCES, "The number of zero backed pages.");
1568	STAM_REL_REG(pVM, &pPGM->cHandyPages, STAMTYPE_U32, "/PGM/Page/cHandyPages", STAMUNIT_OCCURENCES, "The number of handy pages (not included in cAllPages).");
1569	STAM_REL_REG(pVM, &pPGM->cRelocations, STAMTYPE_COUNTER, "/PGM/cRelocations", STAMUNIT_OCCURENCES, "Number of hypervisor relocations.");
1570	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_OCCURENCES, "Number of mapped chunks.");
1571	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_OCCURENCES, "Maximum number of mapped chunks.");
1572
1573	#ifdef VBOX_WITH_STATISTICS
1574
1575	# define PGM_REG_COUNTER(a, b, c) \
1576	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b); \
1577	AssertRC(rc);
1578
1579	# define PGM_REG_PROFILE(a, b, c) \
1580	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b); \
1581	AssertRC(rc);
1582
1583	PGM_REG_COUNTER(&pPGM->StatR3DetectedConflicts, "/PGM/R3/DetectedConflicts", "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1584	PGM_REG_PROFILE(&pPGM->StatR3ResolveConflict, "/PGM/R3/ResolveConflict", "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1585
1586	PGM_REG_COUNTER(&pPGM->StatRZChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsRZ", "TLB hits.");
1587	PGM_REG_COUNTER(&pPGM->StatRZChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesRZ", "TLB misses.");
1588	PGM_REG_COUNTER(&pPGM->StatRZPageMapTlbHits, "/PGM/RZ/Page/MapTlbHits", "TLB hits.");
1589	PGM_REG_COUNTER(&pPGM->StatRZPageMapTlbMisses, "/PGM/RZ/Page/MapTlbMisses", "TLB misses.");
1590	PGM_REG_COUNTER(&pPGM->StatR3ChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsR3", "TLB hits.");
1591	PGM_REG_COUNTER(&pPGM->StatR3ChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesR3", "TLB misses.");
1592	PGM_REG_COUNTER(&pPGM->StatR3PageMapTlbHits, "/PGM/R3/Page/MapTlbHits", "TLB hits.");
1593	PGM_REG_COUNTER(&pPGM->StatR3PageMapTlbMisses, "/PGM/R3/Page/MapTlbMisses", "TLB misses.");
1594
1595	PGM_REG_PROFILE(&pPGM->StatRZSyncCR3HandlerVirtualUpdate, "/PGM/RZ/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1596	PGM_REG_PROFILE(&pPGM->StatRZSyncCR3HandlerVirtualReset, "/PGM/RZ/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1597	PGM_REG_PROFILE(&pPGM->StatR3SyncCR3HandlerVirtualUpdate, "/PGM/R3/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1598	PGM_REG_PROFILE(&pPGM->StatR3SyncCR3HandlerVirtualReset, "/PGM/R3/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1599
1600	PGM_REG_COUNTER(&pPGM->StatRZPhysHandlerReset, "/PGM/RZ/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1601	PGM_REG_COUNTER(&pPGM->StatR3PhysHandlerReset, "/PGM/R3/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1602	PGM_REG_PROFILE(&pPGM->StatRZVirtHandlerSearchByPhys, "/PGM/RZ/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1603	PGM_REG_PROFILE(&pPGM->StatR3VirtHandlerSearchByPhys, "/PGM/R3/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1604
1605	PGM_REG_COUNTER(&pPGM->StatRZPageReplaceShared, "/PGM/RZ/Page/ReplacedShared", "Times a shared page was replaced.");
1606	PGM_REG_COUNTER(&pPGM->StatRZPageReplaceZero, "/PGM/RZ/Page/ReplacedZero", "Times the zero page was replaced.");
1607	/// @todo PGM_REG_COUNTER(&pPGM->StatRZPageHandyAllocs, "/PGM/RZ/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1608	PGM_REG_COUNTER(&pPGM->StatR3PageReplaceShared, "/PGM/R3/Page/ReplacedShared", "Times a shared page was replaced.");
1609	PGM_REG_COUNTER(&pPGM->StatR3PageReplaceZero, "/PGM/R3/Page/ReplacedZero", "Times the zero page was replaced.");
1610	/// @todo PGM_REG_COUNTER(&pPGM->StatR3PageHandyAllocs, "/PGM/R3/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1611
1612	/* GC only: */
1613	PGM_REG_COUNTER(&pPGM->StatRCDynMapCacheHits, "/PGM/RC/DynMapCache/Hits" , "Number of dynamic page mapping cache hits.");
1614	PGM_REG_COUNTER(&pPGM->StatRCDynMapCacheMisses, "/PGM/RC/DynMapCache/Misses" , "Number of dynamic page mapping cache misses.");
1615	PGM_REG_COUNTER(&pPGM->StatRCInvlPgConflict, "/PGM/RC/InvlPgConflict", "Number of times PGMInvalidatePage() detected a mapping conflict.");
1616	PGM_REG_COUNTER(&pPGM->StatRCInvlPgSyncMonCR3, "/PGM/RC/InvlPgSyncMonitorCR3", "Number of times PGMInvalidatePage() ran into PGM_SYNC_MONITOR_CR3.");
1617
1618	# ifdef PGMPOOL_WITH_GCPHYS_TRACKING
1619	PGM_REG_COUNTER(&pPGM->StatTrackVirgin, "/PGM/Track/Virgin", "The number of first time shadowings");
1620	PGM_REG_COUNTER(&pPGM->StatTrackAliased, "/PGM/Track/Aliased", "The number of times switching to cRef2, i.e. the page is being shadowed by two PTs.");
1621	PGM_REG_COUNTER(&pPGM->StatTrackAliasedMany, "/PGM/Track/AliasedMany", "The number of times we're tracking using cRef2.");
1622	PGM_REG_COUNTER(&pPGM->StatTrackAliasedLots, "/PGM/Track/AliasedLots", "The number of times we're hitting pages which has overflowed cRef2");
1623	PGM_REG_COUNTER(&pPGM->StatTrackOverflows, "/PGM/Track/Overflows", "The number of times the extent list grows too long.");
1624	PGM_REG_PROFILE(&pPGM->StatTrackDeref, "/PGM/Track/Deref", "Profiling of SyncPageWorkerTrackDeref (expensive).");
1625	# endif
1626
1627	# undef PGM_REG_COUNTER
1628	# undef PGM_REG_PROFILE
1629	#endif
1630
1631	/*
1632	* Note! The layout below matches the member layout exactly!
1633	*/
1634
1635	/*
1636	* Common - stats
1637	*/
1638	for (unsigned i=0;i<pVM->cCPUs;i++)
1639	{
1640	PVMCPU pVCpu = &pVM->aCpus[i];
1641	PPGMCPU pPGM = &pVCpu->pgm.s;
1642
1643	#define PGM_REG_COUNTER(a, b, c) \
1644	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b, i); \
1645	AssertRC(rc);
1646	#define PGM_REG_PROFILE(a, b, c) \
1647	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b, i); \
1648	AssertRC(rc);
1649
1650	PGM_REG_COUNTER(&pPGM->cGuestModeChanges, "/PGM/CPU%d/cGuestModeChanges", "Number of guest mode changes.");
1651
1652	#ifdef VBOX_WITH_STATISTICS
1653	for (unsigned j = 0; j < RT_ELEMENTS(pPGM->StatSyncPtPD); j++)
1654	STAMR3RegisterF(pVM, &pPGM->StatSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1655	"The number of SyncPT per PD n.", "/PGM/CPU%d/PDSyncPT/%04X", i, j);
1656	for (unsigned j = 0; j < RT_ELEMENTS(pPGM->StatSyncPagePD); j++)
1657	STAMR3RegisterF(pVM, &pPGM->StatSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1658	"The number of SyncPage per PD n.", "/PGM/CPU%d/PDSyncPage/%04X", i, j);
1659
1660	/* R0 only: */
1661	PGM_REG_COUNTER(&pPGM->StatR0DynMapMigrateInvlPg, "/PGM/CPU%d/R0/DynMapMigrateInvlPg", "invlpg count in PGMDynMapMigrateAutoSet.");
1662	PGM_REG_PROFILE(&pPGM->StatR0DynMapGCPageInl, "/PGM/CPU%d/R0/DynMapPageGCPageInl", "Calls to pgmR0DynMapGCPageInlined.");
1663	PGM_REG_COUNTER(&pPGM->StatR0DynMapGCPageInlHits, "/PGM/CPU%d/R0/DynMapPageGCPageInl/Hits", "Hash table lookup hits.");
1664	PGM_REG_COUNTER(&pPGM->StatR0DynMapGCPageInlMisses, "/PGM/CPU%d/R0/DynMapPageGCPageInl/Misses", "Misses that falls back to code common with PGMDynMapHCPage.");
1665	PGM_REG_COUNTER(&pPGM->StatR0DynMapGCPageInlRamHits, "/PGM/CPU%d/R0/DynMapPageGCPageInl/RamHits", "1st ram range hits.");
1666	PGM_REG_COUNTER(&pPGM->StatR0DynMapGCPageInlRamMisses, "/PGM/CPU%d/R0/DynMapPageGCPageInl/RamMisses", "1st ram range misses, takes slow path.");
1667	PGM_REG_PROFILE(&pPGM->StatR0DynMapHCPageInl, "/PGM/CPU%d/R0/DynMapPageHCPageInl", "Calls to pgmR0DynMapHCPageInlined.");
1668	PGM_REG_COUNTER(&pPGM->StatR0DynMapHCPageInlHits, "/PGM/CPU%d/R0/DynMapPageHCPageInl/Hits", "Hash table lookup hits.");
1669	PGM_REG_COUNTER(&pPGM->StatR0DynMapHCPageInlMisses, "/PGM/CPU%d/R0/DynMapPageHCPageInl/Misses", "Misses that falls back to code common with PGMDynMapHCPage.");
1670	PGM_REG_COUNTER(&pPGM->StatR0DynMapPage, "/PGM/CPU%d/R0/DynMapPage", "Calls to pgmR0DynMapPage");
1671	PGM_REG_COUNTER(&pPGM->StatR0DynMapSetOptimize, "/PGM/CPU%d/R0/DynMapPage/SetOptimize", "Calls to pgmDynMapOptimizeAutoSet.");
1672	PGM_REG_COUNTER(&pPGM->StatR0DynMapSetSearchFlushes, "/PGM/CPU%d/R0/DynMapPage/SetSearchFlushes","Set search restorting to subset flushes.");
1673	PGM_REG_COUNTER(&pPGM->StatR0DynMapSetSearchHits, "/PGM/CPU%d/R0/DynMapPage/SetSearchHits", "Set search hits.");
1674	PGM_REG_COUNTER(&pPGM->StatR0DynMapSetSearchMisses, "/PGM/CPU%d/R0/DynMapPage/SetSearchMisses", "Set search misses.");
1675	PGM_REG_PROFILE(&pPGM->StatR0DynMapHCPage, "/PGM/CPU%d/R0/DynMapPage/HCPage", "Calls to PGMDynMapHCPage (ring-0).");
1676	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageHits0, "/PGM/CPU%d/R0/DynMapPage/Hits0", "Hits at iPage+0");
1677	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageHits1, "/PGM/CPU%d/R0/DynMapPage/Hits1", "Hits at iPage+1");
1678	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageHits2, "/PGM/CPU%d/R0/DynMapPage/Hits2", "Hits at iPage+2");
1679	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageInvlPg, "/PGM/CPU%d/R0/DynMapPage/InvlPg", "invlpg count in pgmR0DynMapPageSlow.");
1680	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageSlow, "/PGM/CPU%d/R0/DynMapPage/Slow", "Calls to pgmR0DynMapPageSlow - subtract this from pgmR0DynMapPage to get 1st level hits.");
1681	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageSlowLoopHits, "/PGM/CPU%d/R0/DynMapPage/SlowLoopHits" , "Hits in the loop path.");
1682	PGM_REG_COUNTER(&pPGM->StatR0DynMapPageSlowLoopMisses, "/PGM/CPU%d/R0/DynMapPage/SlowLoopMisses", "Misses in the loop path. NonLoopMisses = Slow - SlowLoopHit - SlowLoopMisses");
1683	//PGM_REG_COUNTER(&pPGM->StatR0DynMapPageSlowLostHits, "/PGM/CPU%d/R0/DynMapPage/SlowLostHits", "Lost hits.");
1684	PGM_REG_COUNTER(&pPGM->StatR0DynMapSubsets, "/PGM/CPU%d/R0/Subsets", "Times PGMDynMapPushAutoSubset was called.");
1685	PGM_REG_COUNTER(&pPGM->StatR0DynMapPopFlushes, "/PGM/CPU%d/R0/SubsetPopFlushes", "Times PGMDynMapPopAutoSubset flushes the subset.");
1686	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[0], "/PGM/CPU%d/R0/SetSize000..09", "00-09% filled");
1687	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[1], "/PGM/CPU%d/R0/SetSize010..19", "10-19% filled");
1688	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[2], "/PGM/CPU%d/R0/SetSize020..29", "20-29% filled");
1689	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[3], "/PGM/CPU%d/R0/SetSize030..39", "30-39% filled");
1690	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[4], "/PGM/CPU%d/R0/SetSize040..49", "40-49% filled");
1691	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[5], "/PGM/CPU%d/R0/SetSize050..59", "50-59% filled");
1692	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[6], "/PGM/CPU%d/R0/SetSize060..69", "60-69% filled");
1693	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[7], "/PGM/CPU%d/R0/SetSize070..79", "70-79% filled");
1694	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[8], "/PGM/CPU%d/R0/SetSize080..89", "80-89% filled");
1695	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[9], "/PGM/CPU%d/R0/SetSize090..99", "90-99% filled");
1696	PGM_REG_COUNTER(&pPGM->aStatR0DynMapSetSize[10], "/PGM/CPU%d/R0/SetSize100", "100% filled");
1697
1698	/* RZ only: */
1699	PGM_REG_PROFILE(&pPGM->StatRZTrap0e, "/PGM/CPU%d/RZ/Trap0e", "Profiling of the PGMTrap0eHandler() body.");
1700	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTimeCheckPageFault, "/PGM/CPU%d/RZ/Trap0e/Time/CheckPageFault", "Profiling of checking for dirty/access emulation faults.");
1701	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTimeSyncPT, "/PGM/CPU%d/RZ/Trap0e/Time/SyncPT", "Profiling of lazy page table syncing.");
1702	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTimeMapping, "/PGM/CPU%d/RZ/Trap0e/Time/Mapping", "Profiling of checking virtual mappings.");
1703	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTimeOutOfSync, "/PGM/CPU%d/RZ/Trap0e/Time/OutOfSync", "Profiling of out of sync page handling.");
1704	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTimeHandlers, "/PGM/CPU%d/RZ/Trap0e/Time/Handlers", "Profiling of checking handlers.");
1705	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2CSAM, "/PGM/CPU%d/RZ/Trap0e/Time2/CSAM", "Profiling of the Trap0eHandler body when the cause is CSAM.");
1706	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2DirtyAndAccessed, "/PGM/CPU%d/RZ/Trap0e/Time2/DirtyAndAccessedBits", "Profiling of the Trap0eHandler body when the cause is dirty and/or accessed bit emulation.");
1707	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2GuestTrap, "/PGM/CPU%d/RZ/Trap0e/Time2/GuestTrap", "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1708	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2HndPhys, "/PGM/CPU%d/RZ/Trap0e/Time2/HandlerPhysical", "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1709	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2HndVirt, "/PGM/CPU%d/RZ/Trap0e/Time2/HandlerVirtual", "Profiling of the Trap0eHandler body when the cause is a virtual handler.");
1710	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2HndUnhandled, "/PGM/CPU%d/RZ/Trap0e/Time2/HandlerUnhandled", "Profiling of the Trap0eHandler body when the cause is access outside the monitored areas of a monitored page.");
1711	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2Misc, "/PGM/CPU%d/RZ/Trap0e/Time2/Misc", "Profiling of the Trap0eHandler body when the cause is not known.");
1712	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2OutOfSync, "/PGM/CPU%d/RZ/Trap0e/Time2/OutOfSync", "Profiling of the Trap0eHandler body when the cause is an out-of-sync page.");
1713	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2OutOfSyncHndPhys, "/PGM/CPU%d/RZ/Trap0e/Time2/OutOfSyncHndPhys", "Profiling of the Trap0eHandler body when the cause is an out-of-sync physical handler page.");
1714	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2OutOfSyncHndVirt, "/PGM/CPU%d/RZ/Trap0e/Time2/OutOfSyncHndVirt", "Profiling of the Trap0eHandler body when the cause is an out-of-sync virtual handler page.");
1715	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2OutOfSyncHndObs, "/PGM/CPU%d/RZ/Trap0e/Time2/OutOfSyncObsHnd", "Profiling of the Trap0eHandler body when the cause is an obsolete handler page.");
1716	PGM_REG_PROFILE(&pPGM->StatRZTrap0eTime2SyncPT, "/PGM/CPU%d/RZ/Trap0e/Time2/SyncPT", "Profiling of the Trap0eHandler body when the cause is lazy syncing of a PT.");
1717	PGM_REG_COUNTER(&pPGM->StatRZTrap0eConflicts, "/PGM/CPU%d/RZ/Trap0e/Conflicts", "The number of times #PF was caused by an undetected conflict.");
1718	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersMapping, "/PGM/CPU%d/RZ/Trap0e/Handlers/Mapping", "Number of traps due to access handlers in mappings.");
1719	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersOutOfSync, "/PGM/CPU%d/RZ/Trap0e/Handlers/OutOfSync", "Number of traps due to out-of-sync handled pages.");
1720	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersPhysical, "/PGM/CPU%d/RZ/Trap0e/Handlers/Physical", "Number of traps due to physical access handlers.");
1721	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersVirtual, "/PGM/CPU%d/RZ/Trap0e/Handlers/Virtual", "Number of traps due to virtual access handlers.");
1722	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersVirtualByPhys, "/PGM/CPU%d/RZ/Trap0e/Handlers/VirtualByPhys", "Number of traps due to virtual access handlers by physical address.");
1723	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersVirtualUnmarked,"/PGM/CPU%d/RZ/Trap0e/Handlers/VirtualUnmarked","Number of traps due to virtual access handlers by virtual address (without proper physical flags).");
1724	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersUnhandled, "/PGM/CPU%d/RZ/Trap0e/Handlers/Unhandled", "Number of traps due to access outside range of monitored page(s).");
1725	PGM_REG_COUNTER(&pPGM->StatRZTrap0eHandlersInvalid, "/PGM/CPU%d/RZ/Trap0e/Handlers/Invalid", "Number of traps due to access to invalid physical memory.");
1726	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSNotPresentRead, "/PGM/CPU%d/RZ/Trap0e/Err/User/NPRead", "Number of user mode not present read page faults.");
1727	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSNotPresentWrite, "/PGM/CPU%d/RZ/Trap0e/Err/User/NPWrite", "Number of user mode not present write page faults.");
1728	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSWrite, "/PGM/CPU%d/RZ/Trap0e/Err/User/Write", "Number of user mode write page faults.");
1729	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSReserved, "/PGM/CPU%d/RZ/Trap0e/Err/User/Reserved", "Number of user mode reserved bit page faults.");
1730	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSNXE, "/PGM/CPU%d/RZ/Trap0e/Err/User/NXE", "Number of user mode NXE page faults.");
1731	PGM_REG_COUNTER(&pPGM->StatRZTrap0eUSRead, "/PGM/CPU%d/RZ/Trap0e/Err/User/Read", "Number of user mode read page faults.");
1732	PGM_REG_COUNTER(&pPGM->StatRZTrap0eSVNotPresentRead, "/PGM/CPU%d/RZ/Trap0e/Err/Supervisor/NPRead", "Number of supervisor mode not present read page faults.");
1733	PGM_REG_COUNTER(&pPGM->StatRZTrap0eSVNotPresentWrite, "/PGM/CPU%d/RZ/Trap0e/Err/Supervisor/NPWrite", "Number of supervisor mode not present write page faults.");
1734	PGM_REG_COUNTER(&pPGM->StatRZTrap0eSVWrite, "/PGM/CPU%d/RZ/Trap0e/Err/Supervisor/Write", "Number of supervisor mode write page faults.");
1735	PGM_REG_COUNTER(&pPGM->StatRZTrap0eSVReserved, "/PGM/CPU%d/RZ/Trap0e/Err/Supervisor/Reserved", "Number of supervisor mode reserved bit page faults.");
1736	PGM_REG_COUNTER(&pPGM->StatRZTrap0eSNXE, "/PGM/CPU%d/RZ/Trap0e/Err/Supervisor/NXE", "Number of supervisor mode NXE page faults.");
1737	PGM_REG_COUNTER(&pPGM->StatRZTrap0eGuestPF, "/PGM/CPU%d/RZ/Trap0e/GuestPF", "Number of real guest page faults.");
1738	PGM_REG_COUNTER(&pPGM->StatRZTrap0eGuestPFUnh, "/PGM/CPU%d/RZ/Trap0e/GuestPF/Unhandled", "Number of real guest page faults from the 'unhandled' case.");
1739	PGM_REG_COUNTER(&pPGM->StatRZTrap0eGuestPFMapping, "/PGM/CPU%d/RZ/Trap0e/GuestPF/InMapping", "Number of real guest page faults in a mapping.");
1740	PGM_REG_COUNTER(&pPGM->StatRZTrap0eWPEmulInRZ, "/PGM/CPU%d/RZ/Trap0e/WP/InRZ", "Number of guest page faults due to X86_CR0_WP emulation.");
1741	PGM_REG_COUNTER(&pPGM->StatRZTrap0eWPEmulToR3, "/PGM/CPU%d/RZ/Trap0e/WP/ToR3", "Number of guest page faults due to X86_CR0_WP emulation (forward to R3 for emulation).");
1742	for (unsigned j = 0; j < RT_ELEMENTS(pPGM->StatRZTrap0ePD); j++)
1743	STAMR3RegisterF(pVM, &pPGM->StatRZTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1744	"The number of traps in page directory n.", "/PGM/CPU%d/RZ/Trap0e/PD/%04X", i, j);
1745
1746	PGM_REG_COUNTER(&pPGM->StatRZGuestCR3WriteHandled, "/PGM/CPU%d/RZ/CR3WriteHandled", "The number of times the Guest CR3 change was successfully handled.");
1747	PGM_REG_COUNTER(&pPGM->StatRZGuestCR3WriteUnhandled, "/PGM/CPU%d/RZ/CR3WriteUnhandled", "The number of times the Guest CR3 change was passed back to the recompiler.");
1748	PGM_REG_COUNTER(&pPGM->StatRZGuestCR3WriteConflict, "/PGM/CPU%d/RZ/CR3WriteConflict", "The number of times the Guest CR3 monitoring detected a conflict.");
1749	PGM_REG_COUNTER(&pPGM->StatRZGuestROMWriteHandled, "/PGM/CPU%d/RZ/ROMWriteHandled", "The number of times the Guest ROM change was successfully handled.");
1750	PGM_REG_COUNTER(&pPGM->StatRZGuestROMWriteUnhandled, "/PGM/CPU%d/RZ/ROMWriteUnhandled", "The number of times the Guest ROM change was passed back to the recompiler.");
1751
1752	/* HC only: */
1753
1754	/* RZ & R3: */
1755	PGM_REG_PROFILE(&pPGM->StatRZSyncCR3, "/PGM/CPU%d/RZ/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1756	PGM_REG_PROFILE(&pPGM->StatRZSyncCR3Handlers, "/PGM/CPU%d/RZ/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1757	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3Global, "/PGM/CPU%d/RZ/SyncCR3/Global", "The number of global CR3 syncs.");
1758	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3NotGlobal, "/PGM/CPU%d/RZ/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1759	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstCacheHit, "/PGM/CPU%d/RZ/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1760	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstFreed, "/PGM/CPU%d/RZ/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1761	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstFreedSrcNP, "/PGM/CPU%d/RZ/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
1762	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstNotPresent, "/PGM/CPU%d/RZ/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
1763	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstSkippedGlobalPD, "/PGM/CPU%d/RZ/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1764	PGM_REG_COUNTER(&pPGM->StatRZSyncCR3DstSkippedGlobalPT, "/PGM/CPU%d/RZ/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
1765	PGM_REG_PROFILE(&pPGM->StatRZSyncPT, "/PGM/CPU%d/RZ/SyncPT", "Profiling of the pfnSyncPT() body.");
1766	PGM_REG_COUNTER(&pPGM->StatRZSyncPTFailed, "/PGM/CPU%d/RZ/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1767	PGM_REG_COUNTER(&pPGM->StatRZSyncPT4K, "/PGM/CPU%d/RZ/SyncPT/4K", "Nr of 4K PT syncs");
1768	PGM_REG_COUNTER(&pPGM->StatRZSyncPT4M, "/PGM/CPU%d/RZ/SyncPT/4M", "Nr of 4M PT syncs");
1769	PGM_REG_COUNTER(&pPGM->StatRZSyncPagePDNAs, "/PGM/CPU%d/RZ/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1770	PGM_REG_COUNTER(&pPGM->StatRZSyncPagePDOutOfSync, "/PGM/CPU%d/RZ/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1771	PGM_REG_COUNTER(&pPGM->StatRZAccessedPage, "/PGM/CPU%d/RZ/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1772	PGM_REG_PROFILE(&pPGM->StatRZDirtyBitTracking, "/PGM/CPU%d/RZ/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1773	PGM_REG_COUNTER(&pPGM->StatRZDirtyPage, "/PGM/CPU%d/RZ/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1774	PGM_REG_COUNTER(&pPGM->StatRZDirtyPageBig, "/PGM/CPU%d/RZ/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1775	PGM_REG_COUNTER(&pPGM->StatRZDirtyPageSkipped, "/PGM/CPU%d/RZ/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1776	PGM_REG_COUNTER(&pPGM->StatRZDirtyPageTrap, "/PGM/CPU%d/RZ/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1777	PGM_REG_COUNTER(&pPGM->StatRZDirtyPageStale, "/PGM/CPU%d/RZ/DirtyPage/Stale", "The number of traps generated for dirty bit tracking (stale tlb entries).");
1778	PGM_REG_COUNTER(&pPGM->StatRZDirtiedPage, "/PGM/CPU%d/RZ/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1779	PGM_REG_COUNTER(&pPGM->StatRZDirtyTrackRealPF, "/PGM/CPU%d/RZ/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1780	PGM_REG_COUNTER(&pPGM->StatRZPageAlreadyDirty, "/PGM/CPU%d/RZ/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1781	PGM_REG_PROFILE(&pPGM->StatRZInvalidatePage, "/PGM/CPU%d/RZ/InvalidatePage", "PGMInvalidatePage() profiling.");
1782	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePage4KBPages, "/PGM/CPU%d/RZ/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1783	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePage4MBPages, "/PGM/CPU%d/RZ/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1784	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePage4MBPagesSkip, "/PGM/CPU%d/RZ/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1785	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePagePDMappings, "/PGM/CPU%d/RZ/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
1786	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePagePDNAs, "/PGM/CPU%d/RZ/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
1787	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePagePDNPs, "/PGM/CPU%d/RZ/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
1788	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePagePDOutOfSync, "/PGM/CPU%d/RZ/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
1789	PGM_REG_COUNTER(&pPGM->StatRZInvalidatePageSkipped, "/PGM/CPU%d/RZ/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
1790	PGM_REG_COUNTER(&pPGM->StatRZPageOutOfSyncSupervisor, "/PGM/CPU%d/RZ/OutOfSync/SuperVisor", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
1791	PGM_REG_COUNTER(&pPGM->StatRZPageOutOfSyncUser, "/PGM/CPU%d/RZ/OutOfSync/User", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
1792	PGM_REG_PROFILE(&pPGM->StatRZPrefetch, "/PGM/CPU%d/RZ/Prefetch", "PGMPrefetchPage profiling.");
1793	PGM_REG_PROFILE(&pPGM->StatRZFlushTLB, "/PGM/CPU%d/RZ/FlushTLB", "Profiling of the PGMFlushTLB() body.");
1794	PGM_REG_COUNTER(&pPGM->StatRZFlushTLBNewCR3, "/PGM/CPU%d/RZ/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
1795	PGM_REG_COUNTER(&pPGM->StatRZFlushTLBNewCR3Global, "/PGM/CPU%d/RZ/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1796	PGM_REG_COUNTER(&pPGM->StatRZFlushTLBSameCR3, "/PGM/CPU%d/RZ/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
1797	PGM_REG_COUNTER(&pPGM->StatRZFlushTLBSameCR3Global, "/PGM/CPU%d/RZ/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1798	PGM_REG_PROFILE(&pPGM->StatRZGstModifyPage, "/PGM/CPU%d/RZ/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
1799
1800	PGM_REG_PROFILE(&pPGM->StatR3SyncCR3, "/PGM/CPU%d/R3/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1801	PGM_REG_PROFILE(&pPGM->StatR3SyncCR3Handlers, "/PGM/CPU%d/R3/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1802	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3Global, "/PGM/CPU%d/R3/SyncCR3/Global", "The number of global CR3 syncs.");
1803	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3NotGlobal, "/PGM/CPU%d/R3/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1804	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstCacheHit, "/PGM/CPU%d/R3/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1805	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstFreed, "/PGM/CPU%d/R3/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1806	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstFreedSrcNP, "/PGM/CPU%d/R3/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
1807	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstNotPresent, "/PGM/CPU%d/R3/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
1808	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstSkippedGlobalPD, "/PGM/CPU%d/R3/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1809	PGM_REG_COUNTER(&pPGM->StatR3SyncCR3DstSkippedGlobalPT, "/PGM/CPU%d/R3/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
1810	PGM_REG_PROFILE(&pPGM->StatR3SyncPT, "/PGM/CPU%d/R3/SyncPT", "Profiling of the pfnSyncPT() body.");
1811	PGM_REG_COUNTER(&pPGM->StatR3SyncPTFailed, "/PGM/CPU%d/R3/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1812	PGM_REG_COUNTER(&pPGM->StatR3SyncPT4K, "/PGM/CPU%d/R3/SyncPT/4K", "Nr of 4K PT syncs");
1813	PGM_REG_COUNTER(&pPGM->StatR3SyncPT4M, "/PGM/CPU%d/R3/SyncPT/4M", "Nr of 4M PT syncs");
1814	PGM_REG_COUNTER(&pPGM->StatR3SyncPagePDNAs, "/PGM/CPU%d/R3/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1815	PGM_REG_COUNTER(&pPGM->StatR3SyncPagePDOutOfSync, "/PGM/CPU%d/R3/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1816	PGM_REG_COUNTER(&pPGM->StatR3AccessedPage, "/PGM/CPU%d/R3/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1817	PGM_REG_PROFILE(&pPGM->StatR3DirtyBitTracking, "/PGM/CPU%d/R3/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1818	PGM_REG_COUNTER(&pPGM->StatR3DirtyPage, "/PGM/CPU%d/R3/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1819	PGM_REG_COUNTER(&pPGM->StatR3DirtyPageBig, "/PGM/CPU%d/R3/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1820	PGM_REG_COUNTER(&pPGM->StatR3DirtyPageSkipped, "/PGM/CPU%d/R3/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1821	PGM_REG_COUNTER(&pPGM->StatR3DirtyPageTrap, "/PGM/CPU%d/R3/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1822	PGM_REG_COUNTER(&pPGM->StatR3DirtiedPage, "/PGM/CPU%d/R3/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1823	PGM_REG_COUNTER(&pPGM->StatR3DirtyTrackRealPF, "/PGM/CPU%d/R3/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1824	PGM_REG_COUNTER(&pPGM->StatR3PageAlreadyDirty, "/PGM/CPU%d/R3/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1825	PGM_REG_PROFILE(&pPGM->StatR3InvalidatePage, "/PGM/CPU%d/R3/InvalidatePage", "PGMInvalidatePage() profiling.");
1826	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePage4KBPages, "/PGM/CPU%d/R3/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1827	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePage4MBPages, "/PGM/CPU%d/R3/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1828	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePage4MBPagesSkip, "/PGM/CPU%d/R3/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1829	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePagePDMappings, "/PGM/CPU%d/R3/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
1830	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePagePDNAs, "/PGM/CPU%d/R3/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
1831	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePagePDNPs, "/PGM/CPU%d/R3/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
1832	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePagePDOutOfSync, "/PGM/CPU%d/R3/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
1833	PGM_REG_COUNTER(&pPGM->StatR3InvalidatePageSkipped, "/PGM/CPU%d/R3/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
1834	PGM_REG_COUNTER(&pPGM->StatR3PageOutOfSyncSupervisor, "/PGM/CPU%d/R3/OutOfSync/SuperVisor", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
1835	PGM_REG_COUNTER(&pPGM->StatR3PageOutOfSyncUser, "/PGM/CPU%d/R3/OutOfSync/User", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
1836	PGM_REG_PROFILE(&pPGM->StatR3Prefetch, "/PGM/CPU%d/R3/Prefetch", "PGMPrefetchPage profiling.");
1837	PGM_REG_PROFILE(&pPGM->StatR3FlushTLB, "/PGM/CPU%d/R3/FlushTLB", "Profiling of the PGMFlushTLB() body.");
1838	PGM_REG_COUNTER(&pPGM->StatR3FlushTLBNewCR3, "/PGM/CPU%d/R3/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
1839	PGM_REG_COUNTER(&pPGM->StatR3FlushTLBNewCR3Global, "/PGM/CPU%d/R3/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1840	PGM_REG_COUNTER(&pPGM->StatR3FlushTLBSameCR3, "/PGM/CPU%d/R3/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
1841	PGM_REG_COUNTER(&pPGM->StatR3FlushTLBSameCR3Global, "/PGM/CPU%d/R3/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1842	PGM_REG_PROFILE(&pPGM->StatR3GstModifyPage, "/PGM/CPU%d/R3/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
1843	#endif /* VBOX_WITH_STATISTICS */
1844
1845	#undef PGM_REG_PROFILE
1846	#undef PGM_REG_COUNTER
1847
1848	}
1849	}
1850
1851
1852	/**
1853	* Init the PGM bits that rely on VMMR0 and MM to be fully initialized.
1854	*
1855	* The dynamic mapping area will also be allocated and initialized at this
1856	* time. We could allocate it during PGMR3Init of course, but the mapping
1857	* wouldn't be allocated at that time preventing us from setting up the
1858	* page table entries with the dummy page.
1859	*
1860	* @returns VBox status code.
1861	* @param pVM VM handle.
1862	*/
1863	VMMR3DECL(int) PGMR3InitDynMap(PVM pVM)
1864	{
1865	RTGCPTR GCPtr;
1866	int rc;
1867
1868	/*
1869	* Reserve space for the dynamic mappings.
1870	*/
1871	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping", &GCPtr);
1872	if (RT_SUCCESS(rc))
1873	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
1874
1875	if ( RT_SUCCESS(rc)
1876	&& (pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) != ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT))
1877	{
1878	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping not crossing", &GCPtr);
1879	if (RT_SUCCESS(rc))
1880	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
1881	}
1882	if (RT_SUCCESS(rc))
1883	{
1884	AssertRelease((pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) == ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT));
1885	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1886	}
1887	return rc;
1888	}
1889
1890
1891	/**
1892	* Ring-3 init finalizing.
1893	*
1894	* @returns VBox status code.
1895	* @param pVM The VM handle.
1896	*/
1897	VMMR3DECL(int) PGMR3InitFinalize(PVM pVM)
1898	{
1899	int rc;
1900
1901	/*
1902	* Reserve space for the dynamic mappings.
1903	* Initialize the dynamic mapping pages with dummy pages to simply the cache.
1904	*/
1905	/* get the pointer to the page table entries. */
1906	PPGMMAPPING pMapping = pgmGetMapping(pVM, pVM->pgm.s.pbDynPageMapBaseGC);
1907	AssertRelease(pMapping);
1908	const uintptr_t off = pVM->pgm.s.pbDynPageMapBaseGC - pMapping->GCPtr;
1909	const unsigned iPT = off >> X86_PD_SHIFT;
1910	const unsigned iPG = (off >> X86_PT_SHIFT) & X86_PT_MASK;
1911	pVM->pgm.s.paDynPageMap32BitPTEsGC = pMapping->aPTs[iPT].pPTRC + iPG * sizeof(pMapping->aPTs[0].pPTR3->a[0]);
1912	pVM->pgm.s.paDynPageMapPaePTEsGC = pMapping->aPTs[iPT].paPaePTsRC + iPG * sizeof(pMapping->aPTs[0].paPaePTsR3->a[0]);
1913
1914	/* init cache */
1915	RTHCPHYS HCPhysDummy = MMR3PageDummyHCPhys(pVM);
1916	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache); i++)
1917	pVM->pgm.s.aHCPhysDynPageMapCache[i] = HCPhysDummy;
1918
1919	for (unsigned i = 0; i < MM_HYPER_DYNAMIC_SIZE; i += PAGE_SIZE)
1920	{
1921	rc = PGMMap(pVM, pVM->pgm.s.pbDynPageMapBaseGC + i, HCPhysDummy, PAGE_SIZE, 0);
1922	AssertRCReturn(rc, rc);
1923	}
1924
1925	/*
1926	* Note that AMD uses all the 8 reserved bits for the address (so 40 bits in total);
1927	* Intel only goes up to 36 bits, so we stick to 36 as well.
1928	*/
1929	/** @todo How to test for the 40 bits support? Long mode seems to be the test criterium. */
1930	uint32_t u32Dummy, u32Features;
1931	CPUMGetGuestCpuId(VMMGetCpu(pVM), 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
1932
1933	if (u32Features & X86_CPUID_FEATURE_EDX_PSE36)
1934	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(36) - 1;
1935	else
1936	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1;
1937
1938	/*
1939	* Allocate memory if we're supposed to do that.
1940	*/
1941	if (pVM->pgm.s.fRamPreAlloc)
1942	rc = pgmR3PhysRamPreAllocate(pVM);
1943
1944	LogRel(("PGMR3InitFinalize: 4 MB PSE mask %RGp\n", pVM->pgm.s.GCPhys4MBPSEMask));
1945	return rc;
1946	}
1947
1948
1949	/**
1950	* Applies relocations to data and code managed by this component.
1951	*
1952	* This function will be called at init and whenever the VMM need to relocate it
1953	* self inside the GC.
1954	*
1955	* @param pVM The VM.
1956	* @param offDelta Relocation delta relative to old location.
1957	*/
1958	VMMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1959	{
1960	LogFlow(("PGMR3Relocate %RGv to %RGv\n", pVM->pgm.s.GCPtrCR3Mapping, pVM->pgm.s.GCPtrCR3Mapping + offDelta));
1961
1962	/*
1963	* Paging stuff.
1964	*/
1965	pVM->pgm.s.GCPtrCR3Mapping += offDelta;
1966
1967	pgmR3ModeDataInit(pVM, true /* resolve GC/R0 symbols */);
1968
1969	/* Shadow, guest and both mode switch & relocation for each VCPU. */
1970	for (unsigned i=0;i<pVM->cCPUs;i++)
1971	{
1972	PVMCPU pVCpu = &pVM->aCpus[i];
1973
1974	pgmR3ModeDataSwitch(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
1975
1976	PGM_SHW_PFN(Relocate, pVCpu)(pVCpu, offDelta);
1977	PGM_GST_PFN(Relocate, pVCpu)(pVCpu, offDelta);
1978	PGM_BTH_PFN(Relocate, pVCpu)(pVCpu, offDelta);
1979	}
1980
1981	/*
1982	* Trees.
1983	*/
1984	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
1985
1986	/*
1987	* Ram ranges.
1988	*/
1989	if (pVM->pgm.s.pRamRangesR3)
1990	{
1991	/* Update the pSelfRC pointers and relink them. */
1992	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesR3; pCur; pCur = pCur->pNextR3)
1993	if (!(pCur->fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
1994	pCur->pSelfRC = MMHyperCCToRC(pVM, pCur);
1995	pgmR3PhysRelinkRamRanges(pVM);
1996	}
1997
1998	/*
1999	* Update the two page directories with all page table mappings.
2000	* (One or more of them have changed, that's why we're here.)
2001	*/
2002	pVM->pgm.s.pMappingsRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pMappingsR3);
2003	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur->pNextR3; pCur = pCur->pNextR3)
2004	pCur->pNextRC = MMHyperR3ToRC(pVM, pCur->pNextR3);
2005
2006	/* Relocate GC addresses of Page Tables. */
2007	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
2008	{
2009	for (RTHCUINT i = 0; i < pCur->cPTs; i++)
2010	{
2011	pCur->aPTs[i].pPTRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].pPTR3);
2012	pCur->aPTs[i].paPaePTsRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].paPaePTsR3);
2013	}
2014	}
2015
2016	/*
2017	* Dynamic page mapping area.
2018	*/
2019	pVM->pgm.s.paDynPageMap32BitPTEsGC += offDelta;
2020	pVM->pgm.s.paDynPageMapPaePTEsGC += offDelta;
2021	pVM->pgm.s.pbDynPageMapBaseGC += offDelta;
2022
2023	/*
2024	* The Zero page.
2025	*/
2026	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
2027	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
2028	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR \|\| !VMMIsHwVirtExtForced(pVM));
2029	#else
2030	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR);
2031	#endif
2032
2033	/*
2034	* Physical and virtual handlers.
2035	*/
2036	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3RelocatePhysHandler, &offDelta);
2037	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3RelocateVirtHandler, &offDelta);
2038	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3RelocateHyperVirtHandler, &offDelta);
2039
2040	/*
2041	* The page pool.
2042	*/
2043	pgmR3PoolRelocate(pVM);
2044	}
2045
2046
2047	/**
2048	* Callback function for relocating a physical access handler.
2049	*
2050	* @returns 0 (continue enum)
2051	* @param pNode Pointer to a PGMPHYSHANDLER node.
2052	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2053	* not certain the delta will fit in a void pointer for all possible configs.
2054	*/
2055	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser)
2056	{
2057	PPGMPHYSHANDLER pHandler = (PPGMPHYSHANDLER)pNode;
2058	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2059	if (pHandler->pfnHandlerRC)
2060	pHandler->pfnHandlerRC += offDelta;
2061	if (pHandler->pvUserRC >= 0x10000)
2062	pHandler->pvUserRC += offDelta;
2063	return 0;
2064	}
2065
2066
2067	/**
2068	* Callback function for relocating a virtual access handler.
2069	*
2070	* @returns 0 (continue enum)
2071	* @param pNode Pointer to a PGMVIRTHANDLER node.
2072	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2073	* not certain the delta will fit in a void pointer for all possible configs.
2074	*/
2075	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2076	{
2077	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2078	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2079	Assert( pHandler->enmType == PGMVIRTHANDLERTYPE_ALL
2080	\|\| pHandler->enmType == PGMVIRTHANDLERTYPE_WRITE);
2081	Assert(pHandler->pfnHandlerRC);
2082	pHandler->pfnHandlerRC += offDelta;
2083	return 0;
2084	}
2085
2086
2087	/**
2088	* Callback function for relocating a virtual access handler for the hypervisor mapping.
2089	*
2090	* @returns 0 (continue enum)
2091	* @param pNode Pointer to a PGMVIRTHANDLER node.
2092	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2093	* not certain the delta will fit in a void pointer for all possible configs.
2094	*/
2095	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2096	{
2097	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2098	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2099	Assert(pHandler->enmType == PGMVIRTHANDLERTYPE_HYPERVISOR);
2100	Assert(pHandler->pfnHandlerRC);
2101	pHandler->pfnHandlerRC += offDelta;
2102	return 0;
2103	}
2104
2105
2106	/**
2107	* The VM is being reset.
2108	*
2109	* For the PGM component this means that any PD write monitors
2110	* needs to be removed.
2111	*
2112	* @param pVM VM handle.
2113	*/
2114	VMMR3DECL(void) PGMR3Reset(PVM pVM)
2115	{
2116	int rc;
2117
2118	LogFlow(("PGMR3Reset:\n"));
2119	VM_ASSERT_EMT(pVM);
2120
2121	pgmLock(pVM);
2122
2123	/*
2124	* Unfix any fixed mappings and disable CR3 monitoring.
2125	*/
2126	pVM->pgm.s.fMappingsFixed = false;
2127	pVM->pgm.s.GCPtrMappingFixed = 0;
2128	pVM->pgm.s.cbMappingFixed = 0;
2129
2130	/* Exit the guest paging mode before the pgm pool gets reset.
2131	* Important to clean up the amd64 case.
2132	*/
2133	for (unsigned i=0;i<pVM->cCPUs;i++)
2134	{
2135	PVMCPU pVCpu = &pVM->aCpus[i];
2136
2137	rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2138	AssertRC(rc);
2139	}
2140
2141	#ifdef DEBUG
2142	DBGFR3InfoLog(pVM, "mappings", NULL);
2143	DBGFR3InfoLog(pVM, "handlers", "all nostat");
2144	#endif
2145
2146	/*
2147	* Reset the shadow page pool.
2148	*/
2149	pgmR3PoolReset(pVM);
2150
2151	for (unsigned i=0;i<pVM->cCPUs;i++)
2152	{
2153	PVMCPU pVCpu = &pVM->aCpus[i];
2154
2155	/*
2156	* Re-init other members.
2157	*/
2158	pVCpu->pgm.s.fA20Enabled = true;
2159
2160	/*
2161	* Clear the FFs PGM owns.
2162	*/
2163	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2164	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2165	}
2166
2167	/*
2168	* Reset (zero) RAM pages.
2169	*/
2170	rc = pgmR3PhysRamReset(pVM);
2171	if (RT_SUCCESS(rc))
2172	{
2173	/*
2174	* Reset (zero) shadow ROM pages.
2175	*/
2176	rc = pgmR3PhysRomReset(pVM);
2177	if (RT_SUCCESS(rc))
2178	{
2179	/*
2180	* Switch mode back to real mode.
2181	*/
2182	for (unsigned i=0;i<pVM->cCPUs;i++)
2183	{
2184	PVMCPU pVCpu = &pVM->aCpus[i];
2185
2186	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2187	AssertRC(rc);
2188
2189	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2190	}
2191	}
2192	}
2193
2194	pgmUnlock(pVM);
2195	//return rc;
2196	AssertReleaseRC(rc);
2197	}
2198
2199
2200	#ifdef VBOX_STRICT
2201	/**
2202	* VM state change callback for clearing fNoMorePhysWrites after
2203	* a snapshot has been created.
2204	*/
2205	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PVM pVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
2206	{
2207	if (enmState == VMSTATE_RUNNING)
2208	pVM->pgm.s.fNoMorePhysWrites = false;
2209	}
2210	#endif
2211
2212
2213	/**
2214	* Terminates the PGM.
2215	*
2216	* @returns VBox status code.
2217	* @param pVM Pointer to VM structure.
2218	*/
2219	VMMR3DECL(int) PGMR3Term(PVM pVM)
2220	{
2221	PGMDeregisterStringFormatTypes();
2222	return PDMR3CritSectDelete(&pVM->pgm.s.CritSect);
2223	}
2224
2225
2226	/**
2227	* Terminates the per-VCPU PGM.
2228	*
2229	* Termination means cleaning up and freeing all resources,
2230	* the VM it self is at this point powered off or suspended.
2231	*
2232	* @returns VBox status code.
2233	* @param pVM The VM to operate on.
2234	*/
2235	VMMR3DECL(int) PGMR3TermCPU(PVM pVM)
2236	{
2237	return 0;
2238	}
2239
2240
2241	/**
2242	* Find the ROM tracking structure for the given page.
2243	*
2244	* @returns Pointer to the ROM page structure. NULL if the caller didn't check
2245	* that it's a ROM page.
2246	* @param pVM The VM handle.
2247	* @param GCPhys The address of the ROM page.
2248	*/
2249	static PPGMROMPAGE pgmR3GetRomPage(PVM pVM, RTGCPHYS GCPhys)
2250	{
2251	for (PPGMROMRANGE pRomRange = pVM->pgm.s.CTX_SUFF(pRomRanges);
2252	pRomRange;
2253	pRomRange = pRomRange->CTX_SUFF(pNext))
2254	{
2255	RTGCPHYS off = GCPhys - pRomRange->GCPhys;
2256	if (GCPhys - pRomRange->GCPhys < pRomRange->cb)
2257	return &pRomRange->aPages[off >> PAGE_SHIFT];
2258	}
2259	return NULL;
2260	}
2261
2262
2263	/**
2264	* Save zero indicator + bits for the specified page.
2265	*
2266	* @returns VBox status code, errors are logged/asserted before returning.
2267	* @param pVM The VM handle.
2268	* @param pSSH The saved state handle.
2269	* @param pPage The page to save.
2270	* @param GCPhys The address of the page.
2271	* @param pRam The ram range (for error logging).
2272	*/
2273	static int pgmR3SavePage(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2274	{
2275	int rc;
2276	if (PGM_PAGE_IS_ZERO(pPage))
2277	rc = SSMR3PutU8(pSSM, 0);
2278	else
2279	{
2280	void const *pvPage;
2281	rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pPage, GCPhys, &pvPage);
2282	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
2283
2284	SSMR3PutU8(pSSM, 1);
2285	rc = SSMR3PutMem(pSSM, pvPage, PAGE_SIZE);
2286	}
2287	return rc;
2288	}
2289
2290
2291	/**
2292	* Save a shadowed ROM page.
2293	*
2294	* Format: Type, protection, and two pages with zero indicators.
2295	*
2296	* @returns VBox status code, errors are logged/asserted before returning.
2297	* @param pVM The VM handle.
2298	* @param pSSH The saved state handle.
2299	* @param pPage The page to save.
2300	* @param GCPhys The address of the page.
2301	* @param pRam The ram range (for error logging).
2302	*/
2303	static int pgmR3SaveShadowedRomPage(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2304	{
2305	/* Need to save both pages and the current state. */
2306	PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
2307	AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_INTERNAL_ERROR);
2308
2309	SSMR3PutU8(pSSM, PGMPAGETYPE_ROM_SHADOW);
2310	SSMR3PutU8(pSSM, pRomPage->enmProt);
2311
2312	int rc = pgmR3SavePage(pVM, pSSM, pPage, GCPhys, pRam);
2313	if (RT_SUCCESS(rc))
2314	{
2315	PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(pRomPage->enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
2316	rc = pgmR3SavePage(pVM, pSSM, pPagePassive, GCPhys, pRam);
2317	}
2318	return rc;
2319	}
2320
2321	/** PGM fields to save/load. */
2322	static const SSMFIELD s_aPGMFields[] =
2323	{
2324	SSMFIELD_ENTRY( PGM, fMappingsFixed),
2325	SSMFIELD_ENTRY_GCPTR( PGM, GCPtrMappingFixed),
2326	SSMFIELD_ENTRY( PGM, cbMappingFixed),
2327	SSMFIELD_ENTRY_TERM()
2328	};
2329
2330	static const SSMFIELD s_aPGMCpuFields[] =
2331	{
2332	SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
2333	SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
2334	SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
2335	SSMFIELD_ENTRY_TERM()
2336	};
2337
2338	/* For loading old saved states. (pre-smp) */
2339	typedef struct
2340	{
2341	/** If set no conflict checks are required. (boolean) */
2342	bool fMappingsFixed;
2343	/** Size of fixed mapping */
2344	uint32_t cbMappingFixed;
2345	/** Base address (GC) of fixed mapping */
2346	RTGCPTR GCPtrMappingFixed;
2347	/** A20 gate mask.
2348	* Our current approach to A20 emulation is to let REM do it and don't bother
2349	* anywhere else. The interesting Guests will be operating with it enabled anyway.
2350	* But whould need arrise, we'll subject physical addresses to this mask. */
2351	RTGCPHYS GCPhysA20Mask;
2352	/** A20 gate state - boolean! */
2353	bool fA20Enabled;
2354	/** The guest paging mode. */
2355	PGMMODE enmGuestMode;
2356	} PGMOLD;
2357
2358	static const SSMFIELD s_aPGMFields_Old[] =
2359	{
2360	SSMFIELD_ENTRY( PGMOLD, fMappingsFixed),
2361	SSMFIELD_ENTRY_GCPTR( PGMOLD, GCPtrMappingFixed),
2362	SSMFIELD_ENTRY( PGMOLD, cbMappingFixed),
2363	SSMFIELD_ENTRY( PGMOLD, fA20Enabled),
2364	SSMFIELD_ENTRY_GCPHYS( PGMOLD, GCPhysA20Mask),
2365	SSMFIELD_ENTRY( PGMOLD, enmGuestMode),
2366	SSMFIELD_ENTRY_TERM()
2367	};
2368
2369
2370	/**
2371	* Execute state save operation.
2372	*
2373	* @returns VBox status code.
2374	* @param pVM VM Handle.
2375	* @param pSSM SSM operation handle.
2376	*/
2377	static DECLCALLBACK(int) pgmR3Save(PVM pVM, PSSMHANDLE pSSM)
2378	{
2379	int rc;
2380	unsigned i;
2381	PPGM pPGM = &pVM->pgm.s;
2382
2383	/*
2384	* Lock PGM and set the no-more-writes indicator.
2385	*/
2386	pgmLock(pVM);
2387	pVM->pgm.s.fNoMorePhysWrites = true;
2388
2389	/*
2390	* Save basic data (required / unaffected by relocation).
2391	*/
2392	SSMR3PutStruct(pSSM, pPGM, &s_aPGMFields[0]);
2393
2394	for (i=0;i<pVM->cCPUs;i++)
2395	{
2396	PVMCPU pVCpu = &pVM->aCpus[i];
2397
2398	SSMR3PutStruct(pSSM, &pVCpu->pgm.s, &s_aPGMCpuFields[0]);
2399	}
2400
2401	/*
2402	* The guest mappings.
2403	*/
2404	i = 0;
2405	for (PPGMMAPPING pMapping = pPGM->pMappingsR3; pMapping; pMapping = pMapping->pNextR3, i++)
2406	{
2407	SSMR3PutU32( pSSM, i);
2408	SSMR3PutStrZ( pSSM, pMapping->pszDesc); /* This is the best unique id we have... */
2409	SSMR3PutGCPtr( pSSM, pMapping->GCPtr);
2410	SSMR3PutGCUIntPtr(pSSM, pMapping->cPTs);
2411	}
2412	rc = SSMR3PutU32(pSSM, ~0); /* terminator. */
2413
2414	/*
2415	* Ram ranges and the memory they describe.
2416	*/
2417	i = 0;
2418	for (PPGMRAMRANGE pRam = pPGM->pRamRangesR3; pRam; pRam = pRam->pNextR3, i++)
2419	{
2420	/*
2421	* Save the ram range details.
2422	*/
2423	SSMR3PutU32(pSSM, i);
2424	SSMR3PutGCPhys(pSSM, pRam->GCPhys);
2425	SSMR3PutGCPhys(pSSM, pRam->GCPhysLast);
2426	SSMR3PutGCPhys(pSSM, pRam->cb);
2427	SSMR3PutU8(pSSM, !!pRam->pvR3); /* Boolean indicating memory or not. */
2428	SSMR3PutStrZ(pSSM, pRam->pszDesc); /* This is the best unique id we have... */
2429
2430	/*
2431	* Iterate the pages, only two special case.
2432	*/
2433	uint32_t const cPages = pRam->cb >> PAGE_SHIFT;
2434	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2435	{
2436	RTGCPHYS GCPhysPage = pRam->GCPhys + ((RTGCPHYS)iPage << PAGE_SHIFT);
2437	PPGMPAGE pPage = &pRam->aPages[iPage];
2438	uint8_t uType = PGM_PAGE_GET_TYPE(pPage);
2439
2440	if (uType == PGMPAGETYPE_ROM_SHADOW)
2441	rc = pgmR3SaveShadowedRomPage(pVM, pSSM, pPage, GCPhysPage, pRam);
2442	else if (uType == PGMPAGETYPE_MMIO2_ALIAS_MMIO)
2443	{
2444	/* MMIO2 alias -> MMIO; the device will just have to deal with this. */
2445	SSMR3PutU8(pSSM, PGMPAGETYPE_MMIO);
2446	rc = SSMR3PutU8(pSSM, 0 /* ZERO */);
2447	}
2448	else
2449	{
2450	SSMR3PutU8(pSSM, uType);
2451	rc = pgmR3SavePage(pVM, pSSM, pPage, GCPhysPage, pRam);
2452	}
2453	if (RT_FAILURE(rc))
2454	break;
2455	}
2456	if (RT_FAILURE(rc))
2457	break;
2458	}
2459
2460	pgmUnlock(pVM);
2461	return SSMR3PutU32(pSSM, ~0); /* terminator. */
2462	}
2463
2464
2465	/**
2466	* Load an ignored page.
2467	*
2468	* @returns VBox status code.
2469	* @param pSSM The saved state handle.
2470	*/
2471	static int pgmR3LoadPageToDevNull(PSSMHANDLE pSSM)
2472	{
2473	uint8_t abPage[PAGE_SIZE];
2474	return SSMR3GetMem(pSSM, &abPage[0], sizeof(abPage));
2475	}
2476
2477
2478	/**
2479	* Loads a page without any bits in the saved state, i.e. making sure it's
2480	* really zero.
2481	*
2482	* @returns VBox status code.
2483	* @param pVM The VM handle.
2484	* @param uType The page type or PGMPAGETYPE_INVALID (old saved
2485	* state).
2486	* @param pPage The guest page tracking structure.
2487	* @param GCPhys The page address.
2488	* @param pRam The ram range (logging).
2489	*/
2490	static int pgmR3LoadPageZero(PVM pVM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2491	{
2492	if ( PGM_PAGE_GET_TYPE(pPage) != uType
2493	&& uType != PGMPAGETYPE_INVALID)
2494	return VERR_SSM_UNEXPECTED_DATA;
2495
2496	/* I think this should be sufficient. */
2497	if (!PGM_PAGE_IS_ZERO(pPage))
2498	return VERR_SSM_UNEXPECTED_DATA;
2499
2500	NOREF(pVM);
2501	NOREF(GCPhys);
2502	NOREF(pRam);
2503	return VINF_SUCCESS;
2504	}
2505
2506
2507	/**
2508	* Loads a page from the saved state.
2509	*
2510	* @returns VBox status code.
2511	* @param pVM The VM handle.
2512	* @param pSSM The SSM handle.
2513	* @param uType The page type or PGMPAGETYEP_INVALID (old saved
2514	* state).
2515	* @param pPage The guest page tracking structure.
2516	* @param GCPhys The page address.
2517	* @param pRam The ram range (logging).
2518	*/
2519	static int pgmR3LoadPageBits(PVM pVM, PSSMHANDLE pSSM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2520	{
2521	int rc;
2522
2523	/*
2524	* Match up the type, dealing with MMIO2 aliases (dropped).
2525	*/
2526	AssertLogRelMsgReturn( PGM_PAGE_GET_TYPE(pPage) == uType
2527	\|\| uType == PGMPAGETYPE_INVALID,
2528	("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc),
2529	VERR_SSM_UNEXPECTED_DATA);
2530
2531	/*
2532	* Load the page.
2533	*/
2534	void *pvPage;
2535	rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvPage);
2536	if (RT_SUCCESS(rc))
2537	rc = SSMR3GetMem(pSSM, pvPage, PAGE_SIZE);
2538
2539	return rc;
2540	}
2541
2542
2543	/**
2544	* Loads a page (counter part to pgmR3SavePage).
2545	*
2546	* @returns VBox status code, fully bitched errors.
2547	* @param pVM The VM handle.
2548	* @param pSSM The SSM handle.
2549	* @param uType The page type.
2550	* @param pPage The page.
2551	* @param GCPhys The page address.
2552	* @param pRam The RAM range (for error messages).
2553	*/
2554	static int pgmR3LoadPage(PVM pVM, PSSMHANDLE pSSM, uint8_t uType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2555	{
2556	uint8_t uState;
2557	int rc = SSMR3GetU8(pSSM, &uState);
2558	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s rc=%Rrc\n", pPage, GCPhys, pRam->pszDesc, rc), rc);
2559	if (uState == 0 /* zero */)
2560	rc = pgmR3LoadPageZero(pVM, uType, pPage, GCPhys, pRam);
2561	else if (uState == 1)
2562	rc = pgmR3LoadPageBits(pVM, pSSM, uType, pPage, GCPhys, pRam);
2563	else
2564	rc = VERR_INTERNAL_ERROR;
2565	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] uState=%d uType=%d GCPhys=%RGp %s rc=%Rrc\n",
2566	pPage, uState, uType, GCPhys, pRam->pszDesc, rc),
2567	rc);
2568	return VINF_SUCCESS;
2569	}
2570
2571
2572	/**
2573	* Loads a shadowed ROM page.
2574	*
2575	* @returns VBox status code, errors are fully bitched.
2576	* @param pVM The VM handle.
2577	* @param pSSM The saved state handle.
2578	* @param pPage The page.
2579	* @param GCPhys The page address.
2580	* @param pRam The RAM range (for error messages).
2581	*/
2582	static int pgmR3LoadShadowedRomPage(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
2583	{
2584	/*
2585	* Load and set the protection first, then load the two pages, the first
2586	* one is the active the other is the passive.
2587	*/
2588	PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
2589	AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_INTERNAL_ERROR);
2590
2591	uint8_t uProt;
2592	int rc = SSMR3GetU8(pSSM, &uProt);
2593	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
2594	PGMROMPROT enmProt = (PGMROMPROT)uProt;
2595	AssertLogRelMsgReturn( enmProt >= PGMROMPROT_INVALID
2596	&& enmProt < PGMROMPROT_END,
2597	("enmProt=%d pPage=%R[pgmpage] GCPhys=%#x %s\n", enmProt, pPage, GCPhys, pRam->pszDesc),
2598	VERR_SSM_UNEXPECTED_DATA);
2599
2600	if (pRomPage->enmProt != enmProt)
2601	{
2602	rc = PGMR3PhysRomProtect(pVM, GCPhys, PAGE_SIZE, enmProt);
2603	AssertLogRelRCReturn(rc, rc);
2604	AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_INTERNAL_ERROR);
2605	}
2606
2607	PPGMPAGE pPageActive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Virgin : &pRomPage->Shadow;
2608	PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
2609	uint8_t u8ActiveType = PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM : PGMPAGETYPE_ROM_SHADOW;
2610	uint8_t u8PassiveType= PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM_SHADOW : PGMPAGETYPE_ROM;
2611
2612	rc = pgmR3LoadPage(pVM, pSSM, u8ActiveType, pPage, GCPhys, pRam);
2613	if (RT_SUCCESS(rc))
2614	{
2615	pPageActive = pPage;
2616	rc = pgmR3LoadPage(pVM, pSSM, u8PassiveType, pPagePassive, GCPhys, pRam);
2617	}
2618	return rc;
2619	}
2620
2621
2622	/**
2623	* Worker for pgmR3Load.
2624	*
2625	* @returns VBox status code.
2626	*
2627	* @param pVM The VM handle.
2628	* @param pSSM The SSM handle.
2629	* @param u32Version The saved state version.
2630	*/
2631	static int pgmR3LoadLocked(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
2632	{
2633	int rc;
2634	PPGM pPGM = &pVM->pgm.s;
2635	uint32_t u32Sep;
2636
2637	/*
2638	* Load basic data (required / unaffected by relocation).
2639	*/
2640	if (u32Version >= PGM_SAVED_STATE_VERSION)
2641	{
2642	rc = SSMR3GetStruct(pSSM, pPGM, &s_aPGMFields[0]);
2643	AssertLogRelRCReturn(rc, rc);
2644
2645	for (unsigned i=0;i<pVM->cCPUs;i++)
2646	{
2647	PVMCPU pVCpu = &pVM->aCpus[i];
2648
2649	rc = SSMR3GetStruct(pSSM, &pVCpu->pgm.s, &s_aPGMCpuFields[0]);
2650	AssertLogRelRCReturn(rc, rc);
2651	}
2652	}
2653	else
2654	if (u32Version >= PGM_SAVED_STATE_VERSION_RR_DESC)
2655	{
2656	PGMOLD pgmOld;
2657
2658	AssertRelease(pVM->cCPUs == 1);
2659
2660	rc = SSMR3GetStruct(pSSM, &pgmOld, &s_aPGMFields_Old[0]);
2661	AssertLogRelRCReturn(rc, rc);
2662
2663	pPGM->fMappingsFixed = pgmOld.fMappingsFixed;
2664	pPGM->GCPtrMappingFixed = pgmOld.GCPtrMappingFixed;
2665	pPGM->cbMappingFixed = pgmOld.cbMappingFixed;
2666
2667	pVM->aCpus[0].pgm.s.fA20Enabled = pgmOld.fA20Enabled;
2668	pVM->aCpus[0].pgm.s.GCPhysA20Mask = pgmOld.GCPhysA20Mask;
2669	pVM->aCpus[0].pgm.s.enmGuestMode = pgmOld.enmGuestMode;
2670	}
2671	else
2672	{
2673	AssertRelease(pVM->cCPUs == 1);
2674
2675	SSMR3GetBool(pSSM, &pPGM->fMappingsFixed);
2676	SSMR3GetGCPtr(pSSM, &pPGM->GCPtrMappingFixed);
2677	SSMR3GetU32(pSSM, &pPGM->cbMappingFixed);
2678
2679	uint32_t cbRamSizeIgnored;
2680	rc = SSMR3GetU32(pSSM, &cbRamSizeIgnored);
2681	if (RT_FAILURE(rc))
2682	return rc;
2683	SSMR3GetGCPhys(pSSM, &pVM->aCpus[0].pgm.s.GCPhysA20Mask);
2684
2685	uint32_t u32 = 0;
2686	SSMR3GetUInt(pSSM, &u32);
2687	pVM->aCpus[0].pgm.s.fA20Enabled = !!u32;
2688	SSMR3GetUInt(pSSM, &pVM->aCpus[0].pgm.s.fSyncFlags);
2689	RTUINT uGuestMode;
2690	SSMR3GetUInt(pSSM, &uGuestMode);
2691	pVM->aCpus[0].pgm.s.enmGuestMode = (PGMMODE)uGuestMode;
2692
2693	/* check separator. */
2694	SSMR3GetU32(pSSM, &u32Sep);
2695	if (RT_FAILURE(rc))
2696	return rc;
2697	if (u32Sep != (uint32_t)~0)
2698	{
2699	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
2700	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2701	}
2702	}
2703
2704	/*
2705	* The guest mappings.
2706	*/
2707	uint32_t i = 0;
2708	for (;; i++)
2709	{
2710	/* Check the seqence number / separator. */
2711	rc = SSMR3GetU32(pSSM, &u32Sep);
2712	if (RT_FAILURE(rc))
2713	return rc;
2714	if (u32Sep == ~0U)
2715	break;
2716	if (u32Sep != i)
2717	{
2718	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2719	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2720	}
2721
2722	/* get the mapping details. */
2723	char szDesc[256];
2724	szDesc[0] = '\0';
2725	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2726	if (RT_FAILURE(rc))
2727	return rc;
2728	RTGCPTR GCPtr;
2729	SSMR3GetGCPtr(pSSM, &GCPtr);
2730	RTGCPTR cPTs;
2731	rc = SSMR3GetGCUIntPtr(pSSM, &cPTs);
2732	if (RT_FAILURE(rc))
2733	return rc;
2734
2735	/* find matching range. */
2736	PPGMMAPPING pMapping;
2737	for (pMapping = pPGM->pMappingsR3; pMapping; pMapping = pMapping->pNextR3)
2738	if ( pMapping->cPTs == cPTs
2739	&& !strcmp(pMapping->pszDesc, szDesc))
2740	break;
2741	AssertLogRelMsgReturn(pMapping, ("Couldn't find mapping: cPTs=%#x szDesc=%s (GCPtr=%RGv)\n",
2742	cPTs, szDesc, GCPtr),
2743	VERR_SSM_LOAD_CONFIG_MISMATCH);
2744
2745	/* relocate it. */
2746	if (pMapping->GCPtr != GCPtr)
2747	{
2748	AssertMsg((GCPtr >> X86_PD_SHIFT << X86_PD_SHIFT) == GCPtr, ("GCPtr=%RGv\n", GCPtr));
2749	pgmR3MapRelocate(pVM, pMapping, pMapping->GCPtr, GCPtr);
2750	}
2751	else
2752	Log(("pgmR3Load: '%s' needed no relocation (%RGv)\n", szDesc, GCPtr));
2753	}
2754
2755	/*
2756	* Ram range flags and bits.
2757	*/
2758	i = 0;
2759	for (PPGMRAMRANGE pRam = pPGM->pRamRangesR3; pRam; pRam = pRam->pNextR3, i++)
2760	{
2761	/** @todo MMIO ranges may move (PCI reconfig), we currently assume they don't. */
2762
2763	/* Check the seqence number / separator. */
2764	rc = SSMR3GetU32(pSSM, &u32Sep);
2765	if (RT_FAILURE(rc))
2766	return rc;
2767	if (u32Sep == ~0U)
2768	break;
2769	if (u32Sep != i)
2770	{
2771	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2772	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2773	}
2774
2775	/* Get the range details. */
2776	RTGCPHYS GCPhys;
2777	SSMR3GetGCPhys(pSSM, &GCPhys);
2778	RTGCPHYS GCPhysLast;
2779	SSMR3GetGCPhys(pSSM, &GCPhysLast);
2780	RTGCPHYS cb;
2781	SSMR3GetGCPhys(pSSM, &cb);
2782	uint8_t fHaveBits;
2783	rc = SSMR3GetU8(pSSM, &fHaveBits);
2784	if (RT_FAILURE(rc))
2785	return rc;
2786	if (fHaveBits & ~1)
2787	{
2788	AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
2789	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
2790	}
2791	size_t cchDesc = 0;
2792	char szDesc[256];
2793	szDesc[0] = '\0';
2794	if (u32Version >= PGM_SAVED_STATE_VERSION_RR_DESC)
2795	{
2796	rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
2797	if (RT_FAILURE(rc))
2798	return rc;
2799	/* Since we've modified the description strings in r45878, only compare
2800	them if the saved state is more recent. */
2801	if (u32Version != PGM_SAVED_STATE_VERSION_RR_DESC)
2802	cchDesc = strlen(szDesc);
2803	}
2804
2805	/*
2806	* Match it up with the current range.
2807	*
2808	* Note there is a hack for dealing with the high BIOS mapping
2809	* in the old saved state format, this means we might not have
2810	* a 1:1 match on success.
2811	*/
2812	if ( ( GCPhys != pRam->GCPhys
2813	\|\| GCPhysLast != pRam->GCPhysLast
2814	\|\| cb != pRam->cb
2815	\|\| ( cchDesc
2816	&& strcmp(szDesc, pRam->pszDesc)) )
2817	/* Hack for PDMDevHlpPhysReserve(pDevIns, 0xfff80000, 0x80000, "High ROM Region"); */
2818	&& ( u32Version != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE
2819	\|\| GCPhys != UINT32_C(0xfff80000)
2820	\|\| GCPhysLast != UINT32_C(0xffffffff)
2821	\|\| pRam->GCPhysLast != GCPhysLast
2822	\|\| pRam->GCPhys < GCPhys
2823	\|\| !fHaveBits)
2824	)
2825	{
2826	LogRel(("Ram range: %RGp-%RGp %RGp bytes %s %s\n"
2827	"State : %RGp-%RGp %RGp bytes %s %s\n",
2828	pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pvR3 ? "bits" : "nobits", pRam->pszDesc,
2829	GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc));
2830	/*
2831	* If we're loading a state for debugging purpose, don't make a fuss if
2832	* the MMIO and ROM stuff isn't 100% right, just skip the mismatches.
2833	*/
2834	if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
2835	\|\| GCPhys < 8 * _1M)
2836	AssertFailedReturn(VERR_SSM_LOAD_CONFIG_MISMATCH);
2837
2838	AssertMsgFailed(("debug skipping not implemented, sorry\n"));
2839	continue;
2840	}
2841
2842	uint32_t cPages = (GCPhysLast - GCPhys + 1) >> PAGE_SHIFT;
2843	if (u32Version >= PGM_SAVED_STATE_VERSION_RR_DESC)
2844	{
2845	/*
2846	* Load the pages one by one.
2847	*/
2848	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2849	{
2850	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2851	PPGMPAGE pPage = &pRam->aPages[iPage];
2852	uint8_t uType;
2853	rc = SSMR3GetU8(pSSM, &uType);
2854	AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] iPage=%#x GCPhysPage=%#x %s\n", pPage, iPage, GCPhysPage, pRam->pszDesc), rc);
2855	if (uType == PGMPAGETYPE_ROM_SHADOW)
2856	rc = pgmR3LoadShadowedRomPage(pVM, pSSM, pPage, GCPhysPage, pRam);
2857	else
2858	rc = pgmR3LoadPage(pVM, pSSM, uType, pPage, GCPhysPage, pRam);
2859	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2860	}
2861	}
2862	else
2863	{
2864	/*
2865	* Old format.
2866	*/
2867	AssertLogRelReturn(!pVM->pgm.s.fRamPreAlloc, VERR_NOT_SUPPORTED); /* can't be detected. */
2868
2869	/* Of the page flags, pick up MMIO2 and ROM/RESERVED for the !fHaveBits case.
2870	The rest is generally irrelevant and wrong since the stuff have to match registrations. */
2871	uint32_t fFlags = 0;
2872	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2873	{
2874	uint16_t u16Flags;
2875	rc = SSMR3GetU16(pSSM, &u16Flags);
2876	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2877	fFlags \|= u16Flags;
2878	}
2879
2880	/* Load the bits */
2881	if ( !fHaveBits
2882	&& GCPhysLast < UINT32_C(0xe0000000))
2883	{
2884	/*
2885	* Dynamic chunks.
2886	*/
2887	const uint32_t cPagesInChunk = (110241024) >> PAGE_SHIFT;
2888	AssertLogRelMsgReturn(cPages % cPagesInChunk == 0,
2889	("cPages=%#x cPagesInChunk=%#x\n", cPages, cPagesInChunk, pRam->GCPhys, pRam->pszDesc),
2890	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2891
2892	for (uint32_t iPage = 0; iPage < cPages; /* incremented by inner loop */ )
2893	{
2894	uint8_t fPresent;
2895	rc = SSMR3GetU8(pSSM, &fPresent);
2896	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2897	AssertLogRelMsgReturn(fPresent == (uint8_t)true \|\| fPresent == (uint8_t)false,
2898	("fPresent=%#x iPage=%#x GCPhys=%#x %s\n", fPresent, iPage, pRam->GCPhys, pRam->pszDesc),
2899	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2900
2901	for (uint32_t iChunkPage = 0; iChunkPage < cPagesInChunk; iChunkPage++, iPage++)
2902	{
2903	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2904	PPGMPAGE pPage = &pRam->aPages[iPage];
2905	if (fPresent)
2906	{
2907	if (PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_MMIO)
2908	rc = pgmR3LoadPageToDevNull(pSSM);
2909	else
2910	rc = pgmR3LoadPageBits(pVM, pSSM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2911	}
2912	else
2913	rc = pgmR3LoadPageZero(pVM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
2914	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
2915	}
2916	}
2917	}
2918	else if (pRam->pvR3)
2919	{
2920	/*
2921	* MMIO2.
2922	*/
2923	AssertLogRelMsgReturn((fFlags & 0x0f) == RT_BIT(3) /MM_RAM_FLAGS_MMIO2/,
2924	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2925	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2926	AssertLogRelMsgReturn(pRam->pvR3,
2927	("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc),
2928	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2929
2930	rc = SSMR3GetMem(pSSM, pRam->pvR3, pRam->cb);
2931	AssertLogRelMsgRCReturn(rc, ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc), rc);
2932	}
2933	else if (GCPhysLast < UINT32_C(0xfff80000))
2934	{
2935	/*
2936	* PCI MMIO, no pages saved.
2937	*/
2938	}
2939	else
2940	{
2941	/*
2942	* Load the 0xfff80000..0xffffffff BIOS range.
2943	* It starts with X reserved pages that we have to skip over since
2944	* the RAMRANGE create by the new code won't include those.
2945	*/
2946	AssertLogRelMsgReturn( !(fFlags & RT_BIT(3) /MM_RAM_FLAGS_MMIO2/)
2947	&& (fFlags & RT_BIT(0) /MM_RAM_FLAGS_RESERVED/),
2948	("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
2949	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2950	AssertLogRelMsgReturn(GCPhys == UINT32_C(0xfff80000),
2951	("GCPhys=%RGp pRamRange{GCPhys=%#x %s}\n", GCPhys, pRam->GCPhys, pRam->pszDesc),
2952	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2953
2954	/* Skip wasted reserved pages before the ROM. */
2955	while (GCPhys < pRam->GCPhys)
2956	{
2957	rc = pgmR3LoadPageToDevNull(pSSM);
2958	GCPhys += PAGE_SIZE;
2959	}
2960
2961	/* Load the bios pages. */
2962	cPages = pRam->cb >> PAGE_SHIFT;
2963	for (uint32_t iPage = 0; iPage < cPages; iPage++)
2964	{
2965	RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << PAGE_SHIFT) + pRam->GCPhys;
2966	PPGMPAGE pPage = &pRam->aPages[iPage];
2967
2968	AssertLogRelMsgReturn(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM,
2969	("GCPhys=%RGp pPage=%R[pgmpage]\n", GCPhys, GCPhys),
2970	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2971	rc = pgmR3LoadPageBits(pVM, pSSM, PGMPAGETYPE_ROM, pPage, GCPhysPage, pRam);
2972	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
2973	}
2974	}
2975	}
2976	}
2977
2978	return rc;
2979	}
2980
2981
2982	/**
2983	* Execute state load operation.
2984	*
2985	* @returns VBox status code.
2986	* @param pVM VM Handle.
2987	* @param pSSM SSM operation handle.
2988	* @param u32Version Data layout version.
2989	*/
2990	static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
2991	{
2992	int rc;
2993	PPGM pPGM = &pVM->pgm.s;
2994
2995	/*
2996	* Validate version.
2997	*/
2998	if ( u32Version != PGM_SAVED_STATE_VERSION
2999	&& u32Version != PGM_SAVED_STATE_VERSION_2_2_2
3000	&& u32Version != PGM_SAVED_STATE_VERSION_RR_DESC
3001	&& u32Version != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
3002	{
3003	AssertMsgFailed(("pgmR3Load: Invalid version u32Version=%d (current %d)!\n", u32Version, PGM_SAVED_STATE_VERSION));
3004	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3005	}
3006
3007	/*
3008	* Call the reset function to make sure all the memory is cleared.
3009	*/
3010	PGMR3Reset(pVM);
3011
3012	/*
3013	* Do the loading while owning the lock because a bunch of the functions
3014	* we're using requires this.
3015	*/
3016	pgmLock(pVM);
3017	rc = pgmR3LoadLocked(pVM, pSSM, u32Version);
3018	pgmUnlock(pVM);
3019	if (RT_SUCCESS(rc))
3020	{
3021	/*
3022	* We require a full resync now.
3023	*/
3024	for (unsigned i=0;i<pVM->cCPUs;i++)
3025	{
3026	PVMCPU pVCpu = &pVM->aCpus[i];
3027	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
3028	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3029
3030	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
3031	}
3032
3033	pPGM->fPhysCacheFlushPending = true;
3034	pgmR3HandlerPhysicalUpdateAll(pVM);
3035
3036	for (unsigned i=0;i<pVM->cCPUs;i++)
3037	{
3038	PVMCPU pVCpu = &pVM->aCpus[i];
3039
3040	/*
3041	* Change the paging mode.
3042	*/
3043	rc = PGMR3ChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode);
3044
3045	/* Restore pVM->pgm.s.GCPhysCR3. */
3046	Assert(pVCpu->pgm.s.GCPhysCR3 == NIL_RTGCPHYS);
3047	RTGCPHYS GCPhysCR3 = CPUMGetGuestCR3(pVCpu);
3048	if ( pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE
3049	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_PAE_NX
3050	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64
3051	\|\| pVCpu->pgm.s.enmGuestMode == PGMMODE_AMD64_NX)
3052	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAE_PAGE_MASK);
3053	else
3054	GCPhysCR3 = (GCPhysCR3 & X86_CR3_PAGE_MASK);
3055	pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
3056	}
3057	}
3058
3059	return rc;
3060	}
3061
3062
3063	/**
3064	* Show paging mode.
3065	*
3066	* @param pVM VM Handle.
3067	* @param pHlp The info helpers.
3068	* @param pszArgs "all" (default), "guest", "shadow" or "host".
3069	*/
3070	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
3071	{
3072	/* digest argument. */
3073	bool fGuest, fShadow, fHost;
3074	if (pszArgs)
3075	pszArgs = RTStrStripL(pszArgs);
3076	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
3077	fShadow = fHost = fGuest = true;
3078	else
3079	{
3080	fShadow = fHost = fGuest = false;
3081	if (strstr(pszArgs, "guest"))
3082	fGuest = true;
3083	if (strstr(pszArgs, "shadow"))
3084	fShadow = true;
3085	if (strstr(pszArgs, "host"))
3086	fHost = true;
3087	}
3088
3089	/** @todo SMP support! */
3090	/* print info. */
3091	if (fGuest)
3092	pHlp->pfnPrintf(pHlp, "Guest paging mode: %s, changed %RU64 times, A20 %s\n",
3093	PGMGetModeName(pVM->aCpus[0].pgm.s.enmGuestMode), pVM->aCpus[0].pgm.s.cGuestModeChanges.c,
3094	pVM->aCpus[0].pgm.s.fA20Enabled ? "enabled" : "disabled");
3095	if (fShadow)
3096	pHlp->pfnPrintf(pHlp, "Shadow paging mode: %s\n", PGMGetModeName(pVM->aCpus[0].pgm.s.enmShadowMode));
3097	if (fHost)
3098	{
3099	const char *psz;
3100	switch (pVM->pgm.s.enmHostMode)
3101	{
3102	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
3103	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
3104	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
3105	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
3106	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
3107	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
3108	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
3109	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
3110	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
3111	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
3112	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
3113	default: psz = "unknown"; break;
3114	}
3115	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
3116	}
3117	}
3118
3119
3120	/**
3121	* Dump registered MMIO ranges to the log.
3122	*
3123	* @param pVM VM Handle.
3124	* @param pHlp The info helpers.
3125	* @param pszArgs Arguments, ignored.
3126	*/
3127	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
3128	{
3129	NOREF(pszArgs);
3130	pHlp->pfnPrintf(pHlp,
3131	"RAM ranges (pVM=%p)\n"
3132	"%.s %.s\n",
3133	pVM,
3134	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
3135	sizeof(RTHCPTR) * 2, "pvHC ");
3136
3137	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesR3; pCur; pCur = pCur->pNextR3)
3138	pHlp->pfnPrintf(pHlp,
3139	"%RGp-%RGp %RHv %s\n",
3140	pCur->GCPhys,
3141	pCur->GCPhysLast,
3142	pCur->pvR3,
3143	pCur->pszDesc);
3144	}
3145
3146	/**
3147	* Dump the page directory to the log.
3148	*
3149	* @param pVM VM Handle.
3150	* @param pHlp The info helpers.
3151	* @param pszArgs Arguments, ignored.
3152	*/
3153	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
3154	{
3155	/** @todo SMP support!! */
3156	PVMCPU pVCpu = &pVM->aCpus[0];
3157
3158	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
3159	/* Big pages supported? */
3160	const bool fPSE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PSE);
3161
3162	/* Global pages supported? */
3163	const bool fPGE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE);
3164
3165	NOREF(pszArgs);
3166
3167	/*
3168	* Get page directory addresses.
3169	*/
3170	PX86PD pPDSrc = pgmGstGet32bitPDPtr(&pVCpu->pgm.s);
3171	Assert(pPDSrc);
3172	Assert(PGMPhysGCPhys2R3PtrAssert(pVM, (RTGCPHYS)(CPUMGetGuestCR3(pVCpu) & X86_CR3_PAGE_MASK), sizeof(*pPDSrc)) == pPDSrc);
3173
3174	/*
3175	* Iterate the page directory.
3176	*/
3177	for (unsigned iPD = 0; iPD < RT_ELEMENTS(pPDSrc->a); iPD++)
3178	{
3179	X86PDE PdeSrc = pPDSrc->a[iPD];
3180	if (PdeSrc.n.u1Present)
3181	{
3182	if (PdeSrc.b.u1Size && fPSE)
3183	pHlp->pfnPrintf(pHlp,
3184	"%04X - %RGp P=%d U=%d RW=%d G=%d - BIG\n",
3185	iPD,
3186	pgmGstGet4MBPhysPage(&pVM->pgm.s, PdeSrc),
3187	PdeSrc.b.u1Present, PdeSrc.b.u1User, PdeSrc.b.u1Write, PdeSrc.b.u1Global && fPGE);
3188	else
3189	pHlp->pfnPrintf(pHlp,
3190	"%04X - %RGp P=%d U=%d RW=%d [G=%d]\n",
3191	iPD,
3192	(RTGCPHYS)(PdeSrc.u & X86_PDE_PG_MASK),
3193	PdeSrc.n.u1Present, PdeSrc.n.u1User, PdeSrc.n.u1Write, PdeSrc.b.u1Global && fPGE);
3194	}
3195	}
3196	}
3197
3198
3199	/**
3200	* Service a VMMCALLHOST_PGM_LOCK call.
3201	*
3202	* @returns VBox status code.
3203	* @param pVM The VM handle.
3204	*/
3205	VMMR3DECL(int) PGMR3LockCall(PVM pVM)
3206	{
3207	int rc = PDMR3CritSectEnterEx(&pVM->pgm.s.CritSect, true /* fHostCall */);
3208	AssertRC(rc);
3209	return rc;
3210	}
3211
3212
3213	/**
3214	* Converts a PGMMODE value to a PGM_TYPE_* \#define.
3215	*
3216	* @returns PGM_TYPE_*.
3217	* @param pgmMode The mode value to convert.
3218	*/
3219	DECLINLINE(unsigned) pgmModeToType(PGMMODE pgmMode)
3220	{
3221	switch (pgmMode)
3222	{
3223	case PGMMODE_REAL: return PGM_TYPE_REAL;
3224	case PGMMODE_PROTECTED: return PGM_TYPE_PROT;
3225	case PGMMODE_32_BIT: return PGM_TYPE_32BIT;
3226	case PGMMODE_PAE:
3227	case PGMMODE_PAE_NX: return PGM_TYPE_PAE;
3228	case PGMMODE_AMD64:
3229	case PGMMODE_AMD64_NX: return PGM_TYPE_AMD64;
3230	case PGMMODE_NESTED: return PGM_TYPE_NESTED;
3231	case PGMMODE_EPT: return PGM_TYPE_EPT;
3232	default:
3233	AssertFatalMsgFailed(("pgmMode=%d\n", pgmMode));
3234	}
3235	}
3236
3237
3238	/**
3239	* Gets the index into the paging mode data array of a SHW+GST mode.
3240	*
3241	* @returns PGM::paPagingData index.
3242	* @param uShwType The shadow paging mode type.
3243	* @param uGstType The guest paging mode type.
3244	*/
3245	DECLINLINE(unsigned) pgmModeDataIndex(unsigned uShwType, unsigned uGstType)
3246	{
3247	Assert(uShwType >= PGM_TYPE_32BIT && uShwType <= PGM_TYPE_MAX);
3248	Assert(uGstType >= PGM_TYPE_REAL && uGstType <= PGM_TYPE_AMD64);
3249	return (uShwType - PGM_TYPE_32BIT) * (PGM_TYPE_AMD64 - PGM_TYPE_REAL + 1)
3250	+ (uGstType - PGM_TYPE_REAL);
3251	}
3252
3253
3254	/**
3255	* Gets the index into the paging mode data array of a SHW+GST mode.
3256	*
3257	* @returns PGM::paPagingData index.
3258	* @param enmShw The shadow paging mode.
3259	* @param enmGst The guest paging mode.
3260	*/
3261	DECLINLINE(unsigned) pgmModeDataIndexByMode(PGMMODE enmShw, PGMMODE enmGst)
3262	{
3263	Assert(enmShw >= PGMMODE_32_BIT && enmShw <= PGMMODE_MAX);
3264	Assert(enmGst > PGMMODE_INVALID && enmGst < PGMMODE_MAX);
3265	return pgmModeDataIndex(pgmModeToType(enmShw), pgmModeToType(enmGst));
3266	}
3267
3268
3269	/**
3270	* Calculates the max data index.
3271	* @returns The number of entries in the paging data array.
3272	*/
3273	DECLINLINE(unsigned) pgmModeDataMaxIndex(void)
3274	{
3275	return pgmModeDataIndex(PGM_TYPE_MAX, PGM_TYPE_AMD64) + 1;
3276	}
3277
3278
3279	/**
3280	* Initializes the paging mode data kept in PGM::paModeData.
3281	*
3282	* @param pVM The VM handle.
3283	* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
3284	* This is used early in the init process to avoid trouble with PDM
3285	* not being initialized yet.
3286	*/
3287	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0)
3288	{
3289	PPGMMODEDATA pModeData;
3290	int rc;
3291
3292	/*
3293	* Allocate the array on the first call.
3294	*/
3295	if (!pVM->pgm.s.paModeData)
3296	{
3297	pVM->pgm.s.paModeData = (PPGMMODEDATA)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMMODEDATA) * pgmModeDataMaxIndex());
3298	AssertReturn(pVM->pgm.s.paModeData, VERR_NO_MEMORY);
3299	}
3300
3301	/*
3302	* Initialize the array entries.
3303	*/
3304	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_REAL)];
3305	pModeData->uShwType = PGM_TYPE_32BIT;
3306	pModeData->uGstType = PGM_TYPE_REAL;
3307	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3308	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3309	rc = PGM_BTH_NAME_32BIT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3310
3311	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGMMODE_PROTECTED)];
3312	pModeData->uShwType = PGM_TYPE_32BIT;
3313	pModeData->uGstType = PGM_TYPE_PROT;
3314	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3315	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3316	rc = PGM_BTH_NAME_32BIT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3317
3318	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_32BIT)];
3319	pModeData->uShwType = PGM_TYPE_32BIT;
3320	pModeData->uGstType = PGM_TYPE_32BIT;
3321	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3322	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3323	rc = PGM_BTH_NAME_32BIT_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3324
3325	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_REAL)];
3326	pModeData->uShwType = PGM_TYPE_PAE;
3327	pModeData->uGstType = PGM_TYPE_REAL;
3328	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3329	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3330	rc = PGM_BTH_NAME_PAE_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3331
3332	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PROT)];
3333	pModeData->uShwType = PGM_TYPE_PAE;
3334	pModeData->uGstType = PGM_TYPE_PROT;
3335	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3336	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3337	rc = PGM_BTH_NAME_PAE_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3338
3339	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_32BIT)];
3340	pModeData->uShwType = PGM_TYPE_PAE;
3341	pModeData->uGstType = PGM_TYPE_32BIT;
3342	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3343	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3344	rc = PGM_BTH_NAME_PAE_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3345
3346	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PAE)];
3347	pModeData->uShwType = PGM_TYPE_PAE;
3348	pModeData->uGstType = PGM_TYPE_PAE;
3349	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3350	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3351	rc = PGM_BTH_NAME_PAE_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3352
3353	#ifdef VBOX_WITH_64_BITS_GUESTS
3354	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_AMD64, PGM_TYPE_AMD64)];
3355	pModeData->uShwType = PGM_TYPE_AMD64;
3356	pModeData->uGstType = PGM_TYPE_AMD64;
3357	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3358	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3359	rc = PGM_BTH_NAME_AMD64_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3360	#endif
3361
3362	/* The nested paging mode. */
3363	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_REAL)];
3364	pModeData->uShwType = PGM_TYPE_NESTED;
3365	pModeData->uGstType = PGM_TYPE_REAL;
3366	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3367	rc = PGM_BTH_NAME_NESTED_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3368
3369	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGMMODE_PROTECTED)];
3370	pModeData->uShwType = PGM_TYPE_NESTED;
3371	pModeData->uGstType = PGM_TYPE_PROT;
3372	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3373	rc = PGM_BTH_NAME_NESTED_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3374
3375	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_32BIT)];
3376	pModeData->uShwType = PGM_TYPE_NESTED;
3377	pModeData->uGstType = PGM_TYPE_32BIT;
3378	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3379	rc = PGM_BTH_NAME_NESTED_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3380
3381	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_PAE)];
3382	pModeData->uShwType = PGM_TYPE_NESTED;
3383	pModeData->uGstType = PGM_TYPE_PAE;
3384	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3385	rc = PGM_BTH_NAME_NESTED_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3386
3387	#ifdef VBOX_WITH_64_BITS_GUESTS
3388	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3389	pModeData->uShwType = PGM_TYPE_NESTED;
3390	pModeData->uGstType = PGM_TYPE_AMD64;
3391	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3392	rc = PGM_BTH_NAME_NESTED_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3393	#endif
3394
3395	/* The shadow part of the nested callback mode depends on the host paging mode (AMD-V only). */
3396	switch (pVM->pgm.s.enmHostMode)
3397	{
3398	#if HC_ARCH_BITS == 32
3399	case SUPPAGINGMODE_32_BIT:
3400	case SUPPAGINGMODE_32_BIT_GLOBAL:
3401	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3402	{
3403	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3404	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3405	}
3406	# ifdef VBOX_WITH_64_BITS_GUESTS
3407	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3408	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3409	# endif
3410	break;
3411
3412	case SUPPAGINGMODE_PAE:
3413	case SUPPAGINGMODE_PAE_NX:
3414	case SUPPAGINGMODE_PAE_GLOBAL:
3415	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3416	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3417	{
3418	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3419	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3420	}
3421	# ifdef VBOX_WITH_64_BITS_GUESTS
3422	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3423	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3424	# endif
3425	break;
3426	#endif /* HC_ARCH_BITS == 32 */
3427
3428	#if HC_ARCH_BITS == 64 \|\| defined(RT_OS_DARWIN)
3429	case SUPPAGINGMODE_AMD64:
3430	case SUPPAGINGMODE_AMD64_GLOBAL:
3431	case SUPPAGINGMODE_AMD64_NX:
3432	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3433	# ifdef VBOX_WITH_64_BITS_GUESTS
3434	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_AMD64; i++)
3435	# else
3436	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3437	# endif
3438	{
3439	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3440	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3441	}
3442	break;
3443	#endif /* HC_ARCH_BITS == 64 \|\| RT_OS_DARWIN */
3444
3445	default:
3446	AssertFailed();
3447	break;
3448	}
3449
3450	/* Extended paging (EPT) / Intel VT-x */
3451	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_REAL)];
3452	pModeData->uShwType = PGM_TYPE_EPT;
3453	pModeData->uGstType = PGM_TYPE_REAL;
3454	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3455	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3456	rc = PGM_BTH_NAME_EPT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3457
3458	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PROT)];
3459	pModeData->uShwType = PGM_TYPE_EPT;
3460	pModeData->uGstType = PGM_TYPE_PROT;
3461	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3462	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3463	rc = PGM_BTH_NAME_EPT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3464
3465	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_32BIT)];
3466	pModeData->uShwType = PGM_TYPE_EPT;
3467	pModeData->uGstType = PGM_TYPE_32BIT;
3468	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3469	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3470	rc = PGM_BTH_NAME_EPT_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3471
3472	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PAE)];
3473	pModeData->uShwType = PGM_TYPE_EPT;
3474	pModeData->uGstType = PGM_TYPE_PAE;
3475	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3476	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3477	rc = PGM_BTH_NAME_EPT_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3478
3479	#ifdef VBOX_WITH_64_BITS_GUESTS
3480	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_AMD64)];
3481	pModeData->uShwType = PGM_TYPE_EPT;
3482	pModeData->uGstType = PGM_TYPE_AMD64;
3483	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3484	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3485	rc = PGM_BTH_NAME_EPT_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3486	#endif
3487	return VINF_SUCCESS;
3488	}
3489
3490
3491	/**
3492	* Switch to different (or relocated in the relocate case) mode data.
3493	*
3494	* @param pVM The VM handle.
3495	* @param pVCpu The VMCPU to operate on.
3496	* @param enmShw The the shadow paging mode.
3497	* @param enmGst The the guest paging mode.
3498	*/
3499	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst)
3500	{
3501	PPGMMODEDATA pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndexByMode(enmShw, enmGst)];
3502
3503	Assert(pModeData->uGstType == pgmModeToType(enmGst));
3504	Assert(pModeData->uShwType == pgmModeToType(enmShw));
3505
3506	/* shadow */
3507	pVCpu->pgm.s.pfnR3ShwRelocate = pModeData->pfnR3ShwRelocate;
3508	pVCpu->pgm.s.pfnR3ShwExit = pModeData->pfnR3ShwExit;
3509	pVCpu->pgm.s.pfnR3ShwGetPage = pModeData->pfnR3ShwGetPage;
3510	Assert(pVCpu->pgm.s.pfnR3ShwGetPage);
3511	pVCpu->pgm.s.pfnR3ShwModifyPage = pModeData->pfnR3ShwModifyPage;
3512
3513	pVCpu->pgm.s.pfnRCShwGetPage = pModeData->pfnRCShwGetPage;
3514	pVCpu->pgm.s.pfnRCShwModifyPage = pModeData->pfnRCShwModifyPage;
3515
3516	pVCpu->pgm.s.pfnR0ShwGetPage = pModeData->pfnR0ShwGetPage;
3517	pVCpu->pgm.s.pfnR0ShwModifyPage = pModeData->pfnR0ShwModifyPage;
3518
3519
3520	/* guest */
3521	pVCpu->pgm.s.pfnR3GstRelocate = pModeData->pfnR3GstRelocate;
3522	pVCpu->pgm.s.pfnR3GstExit = pModeData->pfnR3GstExit;
3523	pVCpu->pgm.s.pfnR3GstGetPage = pModeData->pfnR3GstGetPage;
3524	Assert(pVCpu->pgm.s.pfnR3GstGetPage);
3525	pVCpu->pgm.s.pfnR3GstModifyPage = pModeData->pfnR3GstModifyPage;
3526	pVCpu->pgm.s.pfnR3GstGetPDE = pModeData->pfnR3GstGetPDE;
3527	pVCpu->pgm.s.pfnRCGstGetPage = pModeData->pfnRCGstGetPage;
3528	pVCpu->pgm.s.pfnRCGstModifyPage = pModeData->pfnRCGstModifyPage;
3529	pVCpu->pgm.s.pfnRCGstGetPDE = pModeData->pfnRCGstGetPDE;
3530	pVCpu->pgm.s.pfnR0GstGetPage = pModeData->pfnR0GstGetPage;
3531	pVCpu->pgm.s.pfnR0GstModifyPage = pModeData->pfnR0GstModifyPage;
3532	pVCpu->pgm.s.pfnR0GstGetPDE = pModeData->pfnR0GstGetPDE;
3533
3534	/* both */
3535	pVCpu->pgm.s.pfnR3BthRelocate = pModeData->pfnR3BthRelocate;
3536	pVCpu->pgm.s.pfnR3BthInvalidatePage = pModeData->pfnR3BthInvalidatePage;
3537	pVCpu->pgm.s.pfnR3BthSyncCR3 = pModeData->pfnR3BthSyncCR3;
3538	Assert(pVCpu->pgm.s.pfnR3BthSyncCR3);
3539	pVCpu->pgm.s.pfnR3BthSyncPage = pModeData->pfnR3BthSyncPage;
3540	pVCpu->pgm.s.pfnR3BthPrefetchPage = pModeData->pfnR3BthPrefetchPage;
3541	pVCpu->pgm.s.pfnR3BthVerifyAccessSyncPage = pModeData->pfnR3BthVerifyAccessSyncPage;
3542	#ifdef VBOX_STRICT
3543	pVCpu->pgm.s.pfnR3BthAssertCR3 = pModeData->pfnR3BthAssertCR3;
3544	#endif
3545	pVCpu->pgm.s.pfnR3BthMapCR3 = pModeData->pfnR3BthMapCR3;
3546	pVCpu->pgm.s.pfnR3BthUnmapCR3 = pModeData->pfnR3BthUnmapCR3;
3547
3548	pVCpu->pgm.s.pfnRCBthTrap0eHandler = pModeData->pfnRCBthTrap0eHandler;
3549	pVCpu->pgm.s.pfnRCBthInvalidatePage = pModeData->pfnRCBthInvalidatePage;
3550	pVCpu->pgm.s.pfnRCBthSyncCR3 = pModeData->pfnRCBthSyncCR3;
3551	pVCpu->pgm.s.pfnRCBthSyncPage = pModeData->pfnRCBthSyncPage;
3552	pVCpu->pgm.s.pfnRCBthPrefetchPage = pModeData->pfnRCBthPrefetchPage;
3553	pVCpu->pgm.s.pfnRCBthVerifyAccessSyncPage = pModeData->pfnRCBthVerifyAccessSyncPage;
3554	#ifdef VBOX_STRICT
3555	pVCpu->pgm.s.pfnRCBthAssertCR3 = pModeData->pfnRCBthAssertCR3;
3556	#endif
3557	pVCpu->pgm.s.pfnRCBthMapCR3 = pModeData->pfnRCBthMapCR3;
3558	pVCpu->pgm.s.pfnRCBthUnmapCR3 = pModeData->pfnRCBthUnmapCR3;
3559
3560	pVCpu->pgm.s.pfnR0BthTrap0eHandler = pModeData->pfnR0BthTrap0eHandler;
3561	pVCpu->pgm.s.pfnR0BthInvalidatePage = pModeData->pfnR0BthInvalidatePage;
3562	pVCpu->pgm.s.pfnR0BthSyncCR3 = pModeData->pfnR0BthSyncCR3;
3563	pVCpu->pgm.s.pfnR0BthSyncPage = pModeData->pfnR0BthSyncPage;
3564	pVCpu->pgm.s.pfnR0BthPrefetchPage = pModeData->pfnR0BthPrefetchPage;
3565	pVCpu->pgm.s.pfnR0BthVerifyAccessSyncPage = pModeData->pfnR0BthVerifyAccessSyncPage;
3566	#ifdef VBOX_STRICT
3567	pVCpu->pgm.s.pfnR0BthAssertCR3 = pModeData->pfnR0BthAssertCR3;
3568	#endif
3569	pVCpu->pgm.s.pfnR0BthMapCR3 = pModeData->pfnR0BthMapCR3;
3570	pVCpu->pgm.s.pfnR0BthUnmapCR3 = pModeData->pfnR0BthUnmapCR3;
3571	}
3572
3573
3574	/**
3575	* Calculates the shadow paging mode.
3576	*
3577	* @returns The shadow paging mode.
3578	* @param pVM VM handle.
3579	* @param enmGuestMode The guest mode.
3580	* @param enmHostMode The host mode.
3581	* @param enmShadowMode The current shadow mode.
3582	* @param penmSwitcher Where to store the switcher to use.
3583	* VMMSWITCHER_INVALID means no change.
3584	*/
3585	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher)
3586	{
3587	VMMSWITCHER enmSwitcher = VMMSWITCHER_INVALID;
3588	switch (enmGuestMode)
3589	{
3590	/*
3591	* When switching to real or protected mode we don't change
3592	* anything since it's likely that we'll switch back pretty soon.
3593	*
3594	* During pgmR3InitPaging we'll end up here with PGMMODE_INVALID
3595	* and is supposed to determine which shadow paging and switcher to
3596	* use during init.
3597	*/
3598	case PGMMODE_REAL:
3599	case PGMMODE_PROTECTED:
3600	if ( enmShadowMode != PGMMODE_INVALID
3601	&& !HWACCMIsEnabled(pVM) /* always switch in hwaccm mode! */)
3602	break; /* (no change) */
3603
3604	switch (enmHostMode)
3605	{
3606	case SUPPAGINGMODE_32_BIT:
3607	case SUPPAGINGMODE_32_BIT_GLOBAL:
3608	enmShadowMode = PGMMODE_32_BIT;
3609	enmSwitcher = VMMSWITCHER_32_TO_32;
3610	break;
3611
3612	case SUPPAGINGMODE_PAE:
3613	case SUPPAGINGMODE_PAE_NX:
3614	case SUPPAGINGMODE_PAE_GLOBAL:
3615	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3616	enmShadowMode = PGMMODE_PAE;
3617	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3618	#ifdef DEBUG_bird
3619	if (RTEnvExist("VBOX_32BIT"))
3620	{
3621	enmShadowMode = PGMMODE_32_BIT;
3622	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3623	}
3624	#endif
3625	break;
3626
3627	case SUPPAGINGMODE_AMD64:
3628	case SUPPAGINGMODE_AMD64_GLOBAL:
3629	case SUPPAGINGMODE_AMD64_NX:
3630	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3631	enmShadowMode = PGMMODE_PAE;
3632	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3633	#ifdef DEBUG_bird
3634	if (RTEnvExist("VBOX_32BIT"))
3635	{
3636	enmShadowMode = PGMMODE_32_BIT;
3637	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3638	}
3639	#endif
3640	break;
3641
3642	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3643	}
3644	break;
3645
3646	case PGMMODE_32_BIT:
3647	switch (enmHostMode)
3648	{
3649	case SUPPAGINGMODE_32_BIT:
3650	case SUPPAGINGMODE_32_BIT_GLOBAL:
3651	enmShadowMode = PGMMODE_32_BIT;
3652	enmSwitcher = VMMSWITCHER_32_TO_32;
3653	break;
3654
3655	case SUPPAGINGMODE_PAE:
3656	case SUPPAGINGMODE_PAE_NX:
3657	case SUPPAGINGMODE_PAE_GLOBAL:
3658	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3659	enmShadowMode = PGMMODE_PAE;
3660	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3661	#ifdef DEBUG_bird
3662	if (RTEnvExist("VBOX_32BIT"))
3663	{
3664	enmShadowMode = PGMMODE_32_BIT;
3665	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3666	}
3667	#endif
3668	break;
3669
3670	case SUPPAGINGMODE_AMD64:
3671	case SUPPAGINGMODE_AMD64_GLOBAL:
3672	case SUPPAGINGMODE_AMD64_NX:
3673	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3674	enmShadowMode = PGMMODE_PAE;
3675	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3676	#ifdef DEBUG_bird
3677	if (RTEnvExist("VBOX_32BIT"))
3678	{
3679	enmShadowMode = PGMMODE_32_BIT;
3680	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3681	}
3682	#endif
3683	break;
3684
3685	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3686	}
3687	break;
3688
3689	case PGMMODE_PAE:
3690	case PGMMODE_PAE_NX: /** @todo This might require more switchers and guest+both modes. */
3691	switch (enmHostMode)
3692	{
3693	case SUPPAGINGMODE_32_BIT:
3694	case SUPPAGINGMODE_32_BIT_GLOBAL:
3695	enmShadowMode = PGMMODE_PAE;
3696	enmSwitcher = VMMSWITCHER_32_TO_PAE;
3697	break;
3698
3699	case SUPPAGINGMODE_PAE:
3700	case SUPPAGINGMODE_PAE_NX:
3701	case SUPPAGINGMODE_PAE_GLOBAL:
3702	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3703	enmShadowMode = PGMMODE_PAE;
3704	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3705	break;
3706
3707	case SUPPAGINGMODE_AMD64:
3708	case SUPPAGINGMODE_AMD64_GLOBAL:
3709	case SUPPAGINGMODE_AMD64_NX:
3710	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3711	enmShadowMode = PGMMODE_PAE;
3712	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3713	break;
3714
3715	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3716	}
3717	break;
3718
3719	case PGMMODE_AMD64:
3720	case PGMMODE_AMD64_NX:
3721	switch (enmHostMode)
3722	{
3723	case SUPPAGINGMODE_32_BIT:
3724	case SUPPAGINGMODE_32_BIT_GLOBAL:
3725	enmShadowMode = PGMMODE_AMD64;
3726	enmSwitcher = VMMSWITCHER_32_TO_AMD64;
3727	break;
3728
3729	case SUPPAGINGMODE_PAE:
3730	case SUPPAGINGMODE_PAE_NX:
3731	case SUPPAGINGMODE_PAE_GLOBAL:
3732	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3733	enmShadowMode = PGMMODE_AMD64;
3734	enmSwitcher = VMMSWITCHER_PAE_TO_AMD64;
3735	break;
3736
3737	case SUPPAGINGMODE_AMD64:
3738	case SUPPAGINGMODE_AMD64_GLOBAL:
3739	case SUPPAGINGMODE_AMD64_NX:
3740	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3741	enmShadowMode = PGMMODE_AMD64;
3742	enmSwitcher = VMMSWITCHER_AMD64_TO_AMD64;
3743	break;
3744
3745	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3746	}
3747	break;
3748
3749
3750	default:
3751	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3752	return PGMMODE_INVALID;
3753	}
3754	/* Override the shadow mode is nested paging is active. */
3755	if (HWACCMIsNestedPagingActive(pVM))
3756	enmShadowMode = HWACCMGetShwPagingMode(pVM);
3757
3758	*penmSwitcher = enmSwitcher;
3759	return enmShadowMode;
3760	}
3761
3762
3763	/**
3764	* Performs the actual mode change.
3765	* This is called by PGMChangeMode and pgmR3InitPaging().
3766	*
3767	* @returns VBox status code. May suspend or power off the VM on error, but this
3768	* will trigger using FFs and not status codes.
3769	*
3770	* @param pVM VM handle.
3771	* @param pVCpu The VMCPU to operate on.
3772	* @param enmGuestMode The new guest mode. This is assumed to be different from
3773	* the current mode.
3774	*/
3775	VMMR3DECL(int) PGMR3ChangeMode(PVM pVM, PVMCPU pVCpu, PGMMODE enmGuestMode)
3776	{
3777	Log(("PGMR3ChangeMode: Guest mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmGuestMode), PGMGetModeName(enmGuestMode)));
3778	STAM_REL_COUNTER_INC(&pVCpu->pgm.s.cGuestModeChanges);
3779
3780	/*
3781	* Calc the shadow mode and switcher.
3782	*/
3783	VMMSWITCHER enmSwitcher;
3784	PGMMODE enmShadowMode = pgmR3CalcShadowMode(pVM, enmGuestMode, pVM->pgm.s.enmHostMode, pVCpu->pgm.s.enmShadowMode, &enmSwitcher);
3785	if (enmSwitcher != VMMSWITCHER_INVALID)
3786	{
3787	/*
3788	* Select new switcher.
3789	*/
3790	int rc = VMMR3SelectSwitcher(pVM, enmSwitcher);
3791	if (RT_FAILURE(rc))
3792	{
3793	AssertReleaseMsgFailed(("VMMR3SelectSwitcher(%d) -> %Rrc\n", enmSwitcher, rc));
3794	return rc;
3795	}
3796	}
3797
3798	/*
3799	* Exit old mode(s).
3800	*/
3801	/* shadow */
3802	if (enmShadowMode != pVCpu->pgm.s.enmShadowMode)
3803	{
3804	LogFlow(("PGMR3ChangeMode: Shadow mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode), PGMGetModeName(enmShadowMode)));
3805	if (PGM_SHW_PFN(Exit, pVCpu))
3806	{
3807	int rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3808	if (RT_FAILURE(rc))
3809	{
3810	AssertMsgFailed(("Exit failed for shadow mode %d: %Rrc\n", pVCpu->pgm.s.enmShadowMode, rc));
3811	return rc;
3812	}
3813	}
3814
3815	}
3816	else
3817	LogFlow(("PGMR3ChangeMode: Shadow mode remains: %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3818
3819	/* guest */
3820	if (PGM_GST_PFN(Exit, pVCpu))
3821	{
3822	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
3823	if (RT_FAILURE(rc))
3824	{
3825	AssertMsgFailed(("Exit failed for guest mode %d: %Rrc\n", pVCpu->pgm.s.enmGuestMode, rc));
3826	return rc;
3827	}
3828	}
3829
3830	/*
3831	* Load new paging mode data.
3832	*/
3833	pgmR3ModeDataSwitch(pVM, pVCpu, enmShadowMode, enmGuestMode);
3834
3835	/*
3836	* Enter new shadow mode (if changed).
3837	*/
3838	if (enmShadowMode != pVCpu->pgm.s.enmShadowMode)
3839	{
3840	int rc;
3841	pVCpu->pgm.s.enmShadowMode = enmShadowMode;
3842	switch (enmShadowMode)
3843	{
3844	case PGMMODE_32_BIT:
3845	rc = PGM_SHW_NAME_32BIT(Enter)(pVCpu);
3846	break;
3847	case PGMMODE_PAE:
3848	case PGMMODE_PAE_NX:
3849	rc = PGM_SHW_NAME_PAE(Enter)(pVCpu);
3850	break;
3851	case PGMMODE_AMD64:
3852	case PGMMODE_AMD64_NX:
3853	rc = PGM_SHW_NAME_AMD64(Enter)(pVCpu);
3854	break;
3855	case PGMMODE_NESTED:
3856	rc = PGM_SHW_NAME_NESTED(Enter)(pVCpu);
3857	break;
3858	case PGMMODE_EPT:
3859	rc = PGM_SHW_NAME_EPT(Enter)(pVCpu);
3860	break;
3861	case PGMMODE_REAL:
3862	case PGMMODE_PROTECTED:
3863	default:
3864	AssertReleaseMsgFailed(("enmShadowMode=%d\n", enmShadowMode));
3865	return VERR_INTERNAL_ERROR;
3866	}
3867	if (RT_FAILURE(rc))
3868	{
3869	AssertReleaseMsgFailed(("Entering enmShadowMode=%d failed: %Rrc\n", enmShadowMode, rc));
3870	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3871	return rc;
3872	}
3873	}
3874
3875	/*
3876	* Always flag the necessary updates
3877	*/
3878	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3879
3880	/*
3881	* Enter the new guest and shadow+guest modes.
3882	*/
3883	int rc = -1;
3884	int rc2 = -1;
3885	RTGCPHYS GCPhysCR3 = NIL_RTGCPHYS;
3886	pVCpu->pgm.s.enmGuestMode = enmGuestMode;
3887	switch (enmGuestMode)
3888	{
3889	case PGMMODE_REAL:
3890	rc = PGM_GST_NAME_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3891	switch (pVCpu->pgm.s.enmShadowMode)
3892	{
3893	case PGMMODE_32_BIT:
3894	rc2 = PGM_BTH_NAME_32BIT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3895	break;
3896	case PGMMODE_PAE:
3897	case PGMMODE_PAE_NX:
3898	rc2 = PGM_BTH_NAME_PAE_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3899	break;
3900	case PGMMODE_NESTED:
3901	rc2 = PGM_BTH_NAME_NESTED_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3902	break;
3903	case PGMMODE_EPT:
3904	rc2 = PGM_BTH_NAME_EPT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3905	break;
3906	case PGMMODE_AMD64:
3907	case PGMMODE_AMD64_NX:
3908	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3909	default: AssertFailed(); break;
3910	}
3911	break;
3912
3913	case PGMMODE_PROTECTED:
3914	rc = PGM_GST_NAME_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3915	switch (pVCpu->pgm.s.enmShadowMode)
3916	{
3917	case PGMMODE_32_BIT:
3918	rc2 = PGM_BTH_NAME_32BIT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3919	break;
3920	case PGMMODE_PAE:
3921	case PGMMODE_PAE_NX:
3922	rc2 = PGM_BTH_NAME_PAE_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3923	break;
3924	case PGMMODE_NESTED:
3925	rc2 = PGM_BTH_NAME_NESTED_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3926	break;
3927	case PGMMODE_EPT:
3928	rc2 = PGM_BTH_NAME_EPT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3929	break;
3930	case PGMMODE_AMD64:
3931	case PGMMODE_AMD64_NX:
3932	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3933	default: AssertFailed(); break;
3934	}
3935	break;
3936
3937	case PGMMODE_32_BIT:
3938	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAGE_MASK;
3939	rc = PGM_GST_NAME_32BIT(Enter)(pVCpu, GCPhysCR3);
3940	switch (pVCpu->pgm.s.enmShadowMode)
3941	{
3942	case PGMMODE_32_BIT:
3943	rc2 = PGM_BTH_NAME_32BIT_32BIT(Enter)(pVCpu, GCPhysCR3);
3944	break;
3945	case PGMMODE_PAE:
3946	case PGMMODE_PAE_NX:
3947	rc2 = PGM_BTH_NAME_PAE_32BIT(Enter)(pVCpu, GCPhysCR3);
3948	break;
3949	case PGMMODE_NESTED:
3950	rc2 = PGM_BTH_NAME_NESTED_32BIT(Enter)(pVCpu, GCPhysCR3);
3951	break;
3952	case PGMMODE_EPT:
3953	rc2 = PGM_BTH_NAME_EPT_32BIT(Enter)(pVCpu, GCPhysCR3);
3954	break;
3955	case PGMMODE_AMD64:
3956	case PGMMODE_AMD64_NX:
3957	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3958	default: AssertFailed(); break;
3959	}
3960	break;
3961
3962	case PGMMODE_PAE_NX:
3963	case PGMMODE_PAE:
3964	{
3965	uint32_t u32Dummy, u32Features;
3966
3967	CPUMGetGuestCpuId(pVCpu, 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
3968	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
3969	return VMSetRuntimeError(pVM, VMSETRTERR_FLAGS_FATAL, "PAEmode",
3970	N_("The guest is trying to switch to the PAE mode which is currently disabled by default in VirtualBox. PAE support can be enabled using the VM settings (General/Advanced)"));
3971
3972	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAE_PAGE_MASK;
3973	rc = PGM_GST_NAME_PAE(Enter)(pVCpu, GCPhysCR3);
3974	switch (pVCpu->pgm.s.enmShadowMode)
3975	{
3976	case PGMMODE_PAE:
3977	case PGMMODE_PAE_NX:
3978	rc2 = PGM_BTH_NAME_PAE_PAE(Enter)(pVCpu, GCPhysCR3);
3979	break;
3980	case PGMMODE_NESTED:
3981	rc2 = PGM_BTH_NAME_NESTED_PAE(Enter)(pVCpu, GCPhysCR3);
3982	break;
3983	case PGMMODE_EPT:
3984	rc2 = PGM_BTH_NAME_EPT_PAE(Enter)(pVCpu, GCPhysCR3);
3985	break;
3986	case PGMMODE_32_BIT:
3987	case PGMMODE_AMD64:
3988	case PGMMODE_AMD64_NX:
3989	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3990	default: AssertFailed(); break;
3991	}
3992	break;
3993	}
3994
3995	#ifdef VBOX_WITH_64_BITS_GUESTS
3996	case PGMMODE_AMD64_NX:
3997	case PGMMODE_AMD64:
3998	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & UINT64_C(0xfffffffffffff000); /** @todo define this mask! */
3999	rc = PGM_GST_NAME_AMD64(Enter)(pVCpu, GCPhysCR3);
4000	switch (pVCpu->pgm.s.enmShadowMode)
4001	{
4002	case PGMMODE_AMD64:
4003	case PGMMODE_AMD64_NX:
4004	rc2 = PGM_BTH_NAME_AMD64_AMD64(Enter)(pVCpu, GCPhysCR3);
4005	break;
4006	case PGMMODE_NESTED:
4007	rc2 = PGM_BTH_NAME_NESTED_AMD64(Enter)(pVCpu, GCPhysCR3);
4008	break;
4009	case PGMMODE_EPT:
4010	rc2 = PGM_BTH_NAME_EPT_AMD64(Enter)(pVCpu, GCPhysCR3);
4011	break;
4012	case PGMMODE_32_BIT:
4013	case PGMMODE_PAE:
4014	case PGMMODE_PAE_NX:
4015	AssertMsgFailed(("Should use AMD64 shadow mode!\n"));
4016	default: AssertFailed(); break;
4017	}
4018	break;
4019	#endif
4020
4021	default:
4022	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
4023	rc = VERR_NOT_IMPLEMENTED;
4024	break;
4025	}
4026
4027	/* status codes. */
4028	AssertRC(rc);
4029	AssertRC(rc2);
4030	if (RT_SUCCESS(rc))
4031	{
4032	rc = rc2;
4033	if (RT_SUCCESS(rc)) /* no informational status codes. */
4034	rc = VINF_SUCCESS;
4035	}
4036
4037	/* Notify HWACCM as well. */
4038	HWACCMR3PagingModeChanged(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
4039	return rc;
4040	}
4041
4042	/**
4043	* Release the pgm lock if owned by the current VCPU
4044	*
4045	* @param pVM The VM to operate on.
4046	*/
4047	VMMR3DECL(void) PGMR3ReleaseOwnedLocks(PVM pVM)
4048	{
4049	while (PDMCritSectIsOwner(&pVM->pgm.s.CritSect))
4050	PDMCritSectLeave(&pVM->pgm.s.CritSect);
4051	}
4052
4053	/**
4054	* Called by pgmPoolFlushAllInt prior to flushing the pool.
4055	*
4056	* @returns VBox status code, fully asserted.
4057	* @param pVM The VM handle.
4058	* @param pVCpu The VMCPU to operate on.
4059	*/
4060	int pgmR3ExitShadowModeBeforePoolFlush(PVM pVM, PVMCPU pVCpu)
4061	{
4062	/* Unmap the old CR3 value before flushing everything. */
4063	int rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
4064	AssertRC(rc);
4065
4066	/* Exit the current shadow paging mode as well; nested paging and EPT use a root CR3 which will get flushed here. */
4067	rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
4068	AssertRC(rc);
4069	Assert(pVCpu->pgm.s.pShwPageCR3R3 == NULL);
4070	return rc;
4071	}
4072
4073
4074	/**
4075	* Called by pgmPoolFlushAllInt after flushing the pool.
4076	*
4077	* @returns VBox status code, fully asserted.
4078	* @param pVM The VM handle.
4079	* @param pVCpu The VMCPU to operate on.
4080	*/
4081	int pgmR3ReEnterShadowModeAfterPoolFlush(PVM pVM, PVMCPU pVCpu)
4082	{
4083	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
4084	int rc = PGMR3ChangeMode(pVM, pVCpu, PGMGetGuestMode(pVCpu));
4085	Assert(VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
4086	AssertRCReturn(rc, rc);
4087	AssertRCSuccessReturn(rc, VERR_IPE_UNEXPECTED_INFO_STATUS);
4088
4089	Assert(pVCpu->pgm.s.pShwPageCR3R3 != NULL);
4090	AssertMsg( pVCpu->pgm.s.enmShadowMode >= PGMMODE_NESTED
4091	\|\| CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu),
4092	("%RHp != %RHp %s\n", (RTHCPHYS)CPUMGetHyperCR3(pVCpu), PGMGetHyperCR3(pVCpu), PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
4093	return rc;
4094	}
4095
4096
4097	/**
4098	* Dumps a PAE shadow page table.
4099	*
4100	* @returns VBox status code (VINF_SUCCESS).
4101	* @param pVM The VM handle.
4102	* @param pPT Pointer to the page table.
4103	* @param u64Address The virtual address of the page table starts.
4104	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
4105	* @param cMaxDepth The maxium depth.
4106	* @param pHlp Pointer to the output functions.
4107	*/
4108	static int pgmR3DumpHierarchyHCPaePT(PVM pVM, PX86PTPAE pPT, uint64_t u64Address, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4109	{
4110	for (unsigned i = 0; i < RT_ELEMENTS(pPT->a); i++)
4111	{
4112	X86PTEPAE Pte = pPT->a[i];
4113	if (Pte.n.u1Present)
4114	{
4115	pHlp->pfnPrintf(pHlp,
4116	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
4117	? "%016llx 3 \| P %c %c %c %c %c %s %s %s %s 4K %c%c%c %016llx\n"
4118	: "%08llx 2 \| P %c %c %c %c %c %s %s %s %s 4K %c%c%c %016llx\n",
4119	u64Address + ((uint64_t)i << X86_PT_PAE_SHIFT),
4120	Pte.n.u1Write ? 'W' : 'R',
4121	Pte.n.u1User ? 'U' : 'S',
4122	Pte.n.u1Accessed ? 'A' : '-',
4123	Pte.n.u1Dirty ? 'D' : '-',
4124	Pte.n.u1Global ? 'G' : '-',
4125	Pte.n.u1WriteThru ? "WT" : "--",
4126	Pte.n.u1CacheDisable? "CD" : "--",
4127	Pte.n.u1PAT ? "AT" : "--",
4128	Pte.n.u1NoExecute ? "NX" : "--",
4129	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
4130	Pte.u & RT_BIT(10) ? '1' : '0',
4131	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED? 'v' : '-',
4132	Pte.u & X86_PTE_PAE_PG_MASK);
4133	}
4134	}
4135	return VINF_SUCCESS;
4136	}
4137
4138
4139	/**
4140	* Dumps a PAE shadow page directory table.
4141	*
4142	* @returns VBox status code (VINF_SUCCESS).
4143	* @param pVM The VM handle.
4144	* @param HCPhys The physical address of the page directory table.
4145	* @param u64Address The virtual address of the page table starts.
4146	* @param cr4 The CR4, PSE is currently used.
4147	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
4148	* @param cMaxDepth The maxium depth.
4149	* @param pHlp Pointer to the output functions.
4150	*/
4151	static int pgmR3DumpHierarchyHCPaePD(PVM pVM, RTHCPHYS HCPhys, uint64_t u64Address, uint32_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4152	{
4153	PX86PDPAE pPD = (PX86PDPAE)MMPagePhys2Page(pVM, HCPhys);
4154	if (!pPD)
4155	{
4156	pHlp->pfnPrintf(pHlp, "%0*llx error! Page directory at HCPhys=%RHp was not found in the page pool!\n",
4157	fLongMode ? 16 : 8, u64Address, HCPhys);
4158	return VERR_INVALID_PARAMETER;
4159	}
4160	const bool fBigPagesSupported = fLongMode \|\| !!(cr4 & X86_CR4_PSE);
4161
4162	int rc = VINF_SUCCESS;
4163	for (unsigned i = 0; i < RT_ELEMENTS(pPD->a); i++)
4164	{
4165	X86PDEPAE Pde = pPD->a[i];
4166	if (Pde.n.u1Present)
4167	{
4168	if (fBigPagesSupported && Pde.b.u1Size)
4169	pHlp->pfnPrintf(pHlp,
4170	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
4171	? "%016llx 2 \| P %c %c %c %c %c %s %s %s %s 4M %c%c%c %016llx\n"
4172	: "%08llx 1 \| P %c %c %c %c %c %s %s %s %s 4M %c%c%c %016llx\n",
4173	u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT),
4174	Pde.b.u1Write ? 'W' : 'R',
4175	Pde.b.u1User ? 'U' : 'S',
4176	Pde.b.u1Accessed ? 'A' : '-',
4177	Pde.b.u1Dirty ? 'D' : '-',
4178	Pde.b.u1Global ? 'G' : '-',
4179	Pde.b.u1WriteThru ? "WT" : "--",
4180	Pde.b.u1CacheDisable? "CD" : "--",
4181	Pde.b.u1PAT ? "AT" : "--",
4182	Pde.b.u1NoExecute ? "NX" : "--",
4183	Pde.u & RT_BIT_64(9) ? '1' : '0',
4184	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
4185	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
4186	Pde.u & X86_PDE_PAE_PG_MASK);
4187	else
4188	{
4189	pHlp->pfnPrintf(pHlp,
4190	fLongMode /P R S A D G WT CD AT NX 4M a p ? /
4191	? "%016llx 2 \| P %c %c %c %c %c %s %s .. %s 4K %c%c%c %016llx\n"
4192	: "%08llx 1 \| P %c %c %c %c %c %s %s .. %s 4K %c%c%c %016llx\n",
4193	u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT),
4194	Pde.n.u1Write ? 'W' : 'R',
4195	Pde.n.u1User ? 'U' : 'S',
4196	Pde.n.u1Accessed ? 'A' : '-',
4197	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
4198	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
4199	Pde.n.u1WriteThru ? "WT" : "--",
4200	Pde.n.u1CacheDisable? "CD" : "--",
4201	Pde.n.u1NoExecute ? "NX" : "--",
4202	Pde.u & RT_BIT_64(9) ? '1' : '0',
4203	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
4204	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
4205	Pde.u & X86_PDE_PAE_PG_MASK);
4206	if (cMaxDepth >= 1)
4207	{
4208	/** @todo what about using the page pool for mapping PTs? */
4209	uint64_t u64AddressPT = u64Address + ((uint64_t)i << X86_PD_PAE_SHIFT);
4210	RTHCPHYS HCPhysPT = Pde.u & X86_PDE_PAE_PG_MASK;
4211	PX86PTPAE pPT = NULL;
4212	if (!(Pde.u & PGM_PDFLAGS_MAPPING))
4213	pPT = (PX86PTPAE)MMPagePhys2Page(pVM, HCPhysPT);
4214	else
4215	{
4216	for (PPGMMAPPING pMap = pVM->pgm.s.pMappingsR3; pMap; pMap = pMap->pNextR3)
4217	{
4218	uint64_t off = u64AddressPT - pMap->GCPtr;
4219	if (off < pMap->cb)
4220	{
4221	const int iPDE = (uint32_t)(off >> X86_PD_SHIFT);
4222	const int iSub = (int)((off >> X86_PD_PAE_SHIFT) & 1); /* MSC is a pain sometimes */
4223	if ((iSub ? pMap->aPTs[iPDE].HCPhysPaePT1 : pMap->aPTs[iPDE].HCPhysPaePT0) != HCPhysPT)
4224	pHlp->pfnPrintf(pHlp, "%0*llx error! Mapping error! PT %d has HCPhysPT=%RHp not %RHp is in the PD.\n",
4225	fLongMode ? 16 : 8, u64AddressPT, iPDE,
4226	iSub ? pMap->aPTs[iPDE].HCPhysPaePT1 : pMap->aPTs[iPDE].HCPhysPaePT0, HCPhysPT);
4227	pPT = &pMap->aPTs[iPDE].paPaePTsR3[iSub];
4228	}
4229	}
4230	}
4231	int rc2 = VERR_INVALID_PARAMETER;
4232	if (pPT)
4233	rc2 = pgmR3DumpHierarchyHCPaePT(pVM, pPT, u64AddressPT, fLongMode, cMaxDepth - 1, pHlp);
4234	else
4235	pHlp->pfnPrintf(pHlp, "%0*llx error! Page table at HCPhys=%RHp was not found in the page pool!\n",
4236	fLongMode ? 16 : 8, u64AddressPT, HCPhysPT);
4237	if (rc2 < rc && RT_SUCCESS(rc))
4238	rc = rc2;
4239	}
4240	}
4241	}
4242	}
4243	return rc;
4244	}
4245
4246
4247	/**
4248	* Dumps a PAE shadow page directory pointer table.
4249	*
4250	* @returns VBox status code (VINF_SUCCESS).
4251	* @param pVM The VM handle.
4252	* @param HCPhys The physical address of the page directory pointer table.
4253	* @param u64Address The virtual address of the page table starts.
4254	* @param cr4 The CR4, PSE is currently used.
4255	* @param fLongMode Set if this a long mode table; clear if it's a legacy mode table.
4256	* @param cMaxDepth The maxium depth.
4257	* @param pHlp Pointer to the output functions.
4258	*/
4259	static int pgmR3DumpHierarchyHCPaePDPT(PVM pVM, RTHCPHYS HCPhys, uint64_t u64Address, uint32_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4260	{
4261	PX86PDPT pPDPT = (PX86PDPT)MMPagePhys2Page(pVM, HCPhys);
4262	if (!pPDPT)
4263	{
4264	pHlp->pfnPrintf(pHlp, "%0*llx error! Page directory pointer table at HCPhys=%RHp was not found in the page pool!\n",
4265	fLongMode ? 16 : 8, u64Address, HCPhys);
4266	return VERR_INVALID_PARAMETER;
4267	}
4268
4269	int rc = VINF_SUCCESS;
4270	const unsigned c = fLongMode ? RT_ELEMENTS(pPDPT->a) : X86_PG_PAE_PDPE_ENTRIES;
4271	for (unsigned i = 0; i < c; i++)
4272	{
4273	X86PDPE Pdpe = pPDPT->a[i];
4274	if (Pdpe.n.u1Present)
4275	{
4276	if (fLongMode)
4277	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a p ? /
4278	"%016llx 1 \| P %c %c %c %c %c %s %s %s %s .. %c%c%c %016llx\n",
4279	u64Address + ((uint64_t)i << X86_PDPT_SHIFT),
4280	Pdpe.lm.u1Write ? 'W' : 'R',
4281	Pdpe.lm.u1User ? 'U' : 'S',
4282	Pdpe.lm.u1Accessed ? 'A' : '-',
4283	Pdpe.lm.u3Reserved & 1? '?' : '.', /* ignored */
4284	Pdpe.lm.u3Reserved & 4? '!' : '.', /* mbz */
4285	Pdpe.lm.u1WriteThru ? "WT" : "--",
4286	Pdpe.lm.u1CacheDisable? "CD" : "--",
4287	Pdpe.lm.u3Reserved & 2? "!" : "..",/* mbz */
4288	Pdpe.lm.u1NoExecute ? "NX" : "--",
4289	Pdpe.u & RT_BIT(9) ? '1' : '0',
4290	Pdpe.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
4291	Pdpe.u & RT_BIT(11) ? '1' : '0',
4292	Pdpe.u & X86_PDPE_PG_MASK);
4293	else
4294	pHlp->pfnPrintf(pHlp, /P G WT CD AT NX 4M a p ? /
4295	"%08x 0 \| P %c %s %s %s %s .. %c%c%c %016llx\n",
4296	i << X86_PDPT_SHIFT,
4297	Pdpe.n.u4Reserved & 1? '!' : '.', /* mbz */
4298	Pdpe.n.u4Reserved & 4? '!' : '.', /* mbz */
4299	Pdpe.n.u1WriteThru ? "WT" : "--",
4300	Pdpe.n.u1CacheDisable? "CD" : "--",
4301	Pdpe.n.u4Reserved & 2? "!" : "..",/* mbz */
4302	Pdpe.u & RT_BIT(9) ? '1' : '0',
4303	Pdpe.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
4304	Pdpe.u & RT_BIT(11) ? '1' : '0',
4305	Pdpe.u & X86_PDPE_PG_MASK);
4306	if (cMaxDepth >= 1)
4307	{
4308	int rc2 = pgmR3DumpHierarchyHCPaePD(pVM, Pdpe.u & X86_PDPE_PG_MASK, u64Address + ((uint64_t)i << X86_PDPT_SHIFT),
4309	cr4, fLongMode, cMaxDepth - 1, pHlp);
4310	if (rc2 < rc && RT_SUCCESS(rc))
4311	rc = rc2;
4312	}
4313	}
4314	}
4315	return rc;
4316	}
4317
4318
4319	/**
4320	* Dumps a 32-bit shadow page table.
4321	*
4322	* @returns VBox status code (VINF_SUCCESS).
4323	* @param pVM The VM handle.
4324	* @param HCPhys The physical address of the table.
4325	* @param cr4 The CR4, PSE is currently used.
4326	* @param cMaxDepth The maxium depth.
4327	* @param pHlp Pointer to the output functions.
4328	*/
4329	static int pgmR3DumpHierarchyHcPaePML4(PVM pVM, RTHCPHYS HCPhys, uint32_t cr4, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4330	{
4331	PX86PML4 pPML4 = (PX86PML4)MMPagePhys2Page(pVM, HCPhys);
4332	if (!pPML4)
4333	{
4334	pHlp->pfnPrintf(pHlp, "Page map level 4 at HCPhys=%RHp was not found in the page pool!\n", HCPhys);
4335	return VERR_INVALID_PARAMETER;
4336	}
4337
4338	int rc = VINF_SUCCESS;
4339	for (unsigned i = 0; i < RT_ELEMENTS(pPML4->a); i++)
4340	{
4341	X86PML4E Pml4e = pPML4->a[i];
4342	if (Pml4e.n.u1Present)
4343	{
4344	uint64_t u64Address = ((uint64_t)i << X86_PML4_SHIFT) \| (((uint64_t)i >> (X86_PML4_SHIFT - X86_PDPT_SHIFT - 1)) * 0xffff000000000000ULL);
4345	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a p ? /
4346	"%016llx 0 \| P %c %c %c %c %c %s %s %s %s .. %c%c%c %016llx\n",
4347	u64Address,
4348	Pml4e.n.u1Write ? 'W' : 'R',
4349	Pml4e.n.u1User ? 'U' : 'S',
4350	Pml4e.n.u1Accessed ? 'A' : '-',
4351	Pml4e.n.u3Reserved & 1? '?' : '.', /* ignored */
4352	Pml4e.n.u3Reserved & 4? '!' : '.', /* mbz */
4353	Pml4e.n.u1WriteThru ? "WT" : "--",
4354	Pml4e.n.u1CacheDisable? "CD" : "--",
4355	Pml4e.n.u3Reserved & 2? "!" : "..",/* mbz */
4356	Pml4e.n.u1NoExecute ? "NX" : "--",
4357	Pml4e.u & RT_BIT(9) ? '1' : '0',
4358	Pml4e.u & PGM_PLXFLAGS_PERMANENT ? 'p' : '-',
4359	Pml4e.u & RT_BIT(11) ? '1' : '0',
4360	Pml4e.u & X86_PML4E_PG_MASK);
4361
4362	if (cMaxDepth >= 1)
4363	{
4364	int rc2 = pgmR3DumpHierarchyHCPaePDPT(pVM, Pml4e.u & X86_PML4E_PG_MASK, u64Address, cr4, true, cMaxDepth - 1, pHlp);
4365	if (rc2 < rc && RT_SUCCESS(rc))
4366	rc = rc2;
4367	}
4368	}
4369	}
4370	return rc;
4371	}
4372
4373
4374	/**
4375	* Dumps a 32-bit shadow page table.
4376	*
4377	* @returns VBox status code (VINF_SUCCESS).
4378	* @param pVM The VM handle.
4379	* @param pPT Pointer to the page table.
4380	* @param u32Address The virtual address this table starts at.
4381	* @param pHlp Pointer to the output functions.
4382	*/
4383	int pgmR3DumpHierarchyHC32BitPT(PVM pVM, PX86PT pPT, uint32_t u32Address, PCDBGFINFOHLP pHlp)
4384	{
4385	for (unsigned i = 0; i < RT_ELEMENTS(pPT->a); i++)
4386	{
4387	X86PTE Pte = pPT->a[i];
4388	if (Pte.n.u1Present)
4389	{
4390	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
4391	"%08x 1 \| P %c %c %c %c %c %s %s %s .. 4K %c%c%c %08x\n",
4392	u32Address + (i << X86_PT_SHIFT),
4393	Pte.n.u1Write ? 'W' : 'R',
4394	Pte.n.u1User ? 'U' : 'S',
4395	Pte.n.u1Accessed ? 'A' : '-',
4396	Pte.n.u1Dirty ? 'D' : '-',
4397	Pte.n.u1Global ? 'G' : '-',
4398	Pte.n.u1WriteThru ? "WT" : "--",
4399	Pte.n.u1CacheDisable? "CD" : "--",
4400	Pte.n.u1PAT ? "AT" : "--",
4401	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
4402	Pte.u & RT_BIT(10) ? '1' : '0',
4403	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED ? 'v' : '-',
4404	Pte.u & X86_PDE_PG_MASK);
4405	}
4406	}
4407	return VINF_SUCCESS;
4408	}
4409
4410
4411	/**
4412	* Dumps a 32-bit shadow page directory and page tables.
4413	*
4414	* @returns VBox status code (VINF_SUCCESS).
4415	* @param pVM The VM handle.
4416	* @param cr3 The root of the hierarchy.
4417	* @param cr4 The CR4, PSE is currently used.
4418	* @param cMaxDepth How deep into the hierarchy the dumper should go.
4419	* @param pHlp Pointer to the output functions.
4420	*/
4421	int pgmR3DumpHierarchyHC32BitPD(PVM pVM, uint32_t cr3, uint32_t cr4, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4422	{
4423	PX86PD pPD = (PX86PD)MMPagePhys2Page(pVM, cr3 & X86_CR3_PAGE_MASK);
4424	if (!pPD)
4425	{
4426	pHlp->pfnPrintf(pHlp, "Page directory at %#x was not found in the page pool!\n", cr3 & X86_CR3_PAGE_MASK);
4427	return VERR_INVALID_PARAMETER;
4428	}
4429
4430	int rc = VINF_SUCCESS;
4431	for (unsigned i = 0; i < RT_ELEMENTS(pPD->a); i++)
4432	{
4433	X86PDE Pde = pPD->a[i];
4434	if (Pde.n.u1Present)
4435	{
4436	const uint32_t u32Address = i << X86_PD_SHIFT;
4437	if ((cr4 & X86_CR4_PSE) && Pde.b.u1Size)
4438	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
4439	"%08x 0 \| P %c %c %c %c %c %s %s %s .. 4M %c%c%c %08x\n",
4440	u32Address,
4441	Pde.b.u1Write ? 'W' : 'R',
4442	Pde.b.u1User ? 'U' : 'S',
4443	Pde.b.u1Accessed ? 'A' : '-',
4444	Pde.b.u1Dirty ? 'D' : '-',
4445	Pde.b.u1Global ? 'G' : '-',
4446	Pde.b.u1WriteThru ? "WT" : "--",
4447	Pde.b.u1CacheDisable? "CD" : "--",
4448	Pde.b.u1PAT ? "AT" : "--",
4449	Pde.u & RT_BIT_64(9) ? '1' : '0',
4450	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
4451	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
4452	Pde.u & X86_PDE4M_PG_MASK);
4453	else
4454	{
4455	pHlp->pfnPrintf(pHlp, /P R S A D G WT CD AT NX 4M a m d /
4456	"%08x 0 \| P %c %c %c %c %c %s %s .. .. 4K %c%c%c %08x\n",
4457	u32Address,
4458	Pde.n.u1Write ? 'W' : 'R',
4459	Pde.n.u1User ? 'U' : 'S',
4460	Pde.n.u1Accessed ? 'A' : '-',
4461	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
4462	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
4463	Pde.n.u1WriteThru ? "WT" : "--",
4464	Pde.n.u1CacheDisable? "CD" : "--",
4465	Pde.u & RT_BIT_64(9) ? '1' : '0',
4466	Pde.u & PGM_PDFLAGS_MAPPING ? 'm' : '-',
4467	Pde.u & PGM_PDFLAGS_TRACK_DIRTY ? 'd' : '-',
4468	Pde.u & X86_PDE_PG_MASK);
4469	if (cMaxDepth >= 1)
4470	{
4471	/** @todo what about using the page pool for mapping PTs? */
4472	RTHCPHYS HCPhys = Pde.u & X86_PDE_PG_MASK;
4473	PX86PT pPT = NULL;
4474	if (!(Pde.u & PGM_PDFLAGS_MAPPING))
4475	pPT = (PX86PT)MMPagePhys2Page(pVM, HCPhys);
4476	else
4477	{
4478	for (PPGMMAPPING pMap = pVM->pgm.s.pMappingsR3; pMap; pMap = pMap->pNextR3)
4479	if (u32Address - pMap->GCPtr < pMap->cb)
4480	{
4481	int iPDE = (u32Address - pMap->GCPtr) >> X86_PD_SHIFT;
4482	if (pMap->aPTs[iPDE].HCPhysPT != HCPhys)
4483	pHlp->pfnPrintf(pHlp, "%08x error! Mapping error! PT %d has HCPhysPT=%RHp not %RHp is in the PD.\n",
4484	u32Address, iPDE, pMap->aPTs[iPDE].HCPhysPT, HCPhys);
4485	pPT = pMap->aPTs[iPDE].pPTR3;
4486	}
4487	}
4488	int rc2 = VERR_INVALID_PARAMETER;
4489	if (pPT)
4490	rc2 = pgmR3DumpHierarchyHC32BitPT(pVM, pPT, u32Address, pHlp);
4491	else
4492	pHlp->pfnPrintf(pHlp, "%08x error! Page table at %#x was not found in the page pool!\n", u32Address, HCPhys);
4493	if (rc2 < rc && RT_SUCCESS(rc))
4494	rc = rc2;
4495	}
4496	}
4497	}
4498	}
4499
4500	return rc;
4501	}
4502
4503
4504	/**
4505	* Dumps a 32-bit shadow page table.
4506	*
4507	* @returns VBox status code (VINF_SUCCESS).
4508	* @param pVM The VM handle.
4509	* @param pPT Pointer to the page table.
4510	* @param u32Address The virtual address this table starts at.
4511	* @param PhysSearch Address to search for.
4512	*/
4513	int pgmR3DumpHierarchyGC32BitPT(PVM pVM, PX86PT pPT, uint32_t u32Address, RTGCPHYS PhysSearch)
4514	{
4515	for (unsigned i = 0; i < RT_ELEMENTS(pPT->a); i++)
4516	{
4517	X86PTE Pte = pPT->a[i];
4518	if (Pte.n.u1Present)
4519	{
4520	Log(( /P R S A D G WT CD AT NX 4M a m d /
4521	"%08x 1 \| P %c %c %c %c %c %s %s %s .. 4K %c%c%c %08x\n",
4522	u32Address + (i << X86_PT_SHIFT),
4523	Pte.n.u1Write ? 'W' : 'R',
4524	Pte.n.u1User ? 'U' : 'S',
4525	Pte.n.u1Accessed ? 'A' : '-',
4526	Pte.n.u1Dirty ? 'D' : '-',
4527	Pte.n.u1Global ? 'G' : '-',
4528	Pte.n.u1WriteThru ? "WT" : "--",
4529	Pte.n.u1CacheDisable? "CD" : "--",
4530	Pte.n.u1PAT ? "AT" : "--",
4531	Pte.u & PGM_PTFLAGS_TRACK_DIRTY ? 'd' : '-',
4532	Pte.u & RT_BIT(10) ? '1' : '0',
4533	Pte.u & PGM_PTFLAGS_CSAM_VALIDATED ? 'v' : '-',
4534	Pte.u & X86_PDE_PG_MASK));
4535
4536	if ((Pte.u & X86_PDE_PG_MASK) == PhysSearch)
4537	{
4538	uint64_t fPageShw = 0;
4539	RTHCPHYS pPhysHC = 0;
4540
4541	/** @todo SMP support!! */
4542	PGMShwGetPage(&pVM->aCpus[0], (RTGCPTR)(u32Address + (i << X86_PT_SHIFT)), &fPageShw, &pPhysHC);
4543	Log(("Found %RGp at %RGv -> flags=%llx\n", PhysSearch, (RTGCPTR)(u32Address + (i << X86_PT_SHIFT)), fPageShw));
4544	}
4545	}
4546	}
4547	return VINF_SUCCESS;
4548	}
4549
4550
4551	/**
4552	* Dumps a 32-bit guest page directory and page tables.
4553	*
4554	* @returns VBox status code (VINF_SUCCESS).
4555	* @param pVM The VM handle.
4556	* @param cr3 The root of the hierarchy.
4557	* @param cr4 The CR4, PSE is currently used.
4558	* @param PhysSearch Address to search for.
4559	*/
4560	VMMR3DECL(int) PGMR3DumpHierarchyGC(PVM pVM, uint64_t cr3, uint64_t cr4, RTGCPHYS PhysSearch)
4561	{
4562	bool fLongMode = false;
4563	const unsigned cch = fLongMode ? 16 : 8; NOREF(cch);
4564	PX86PD pPD = 0;
4565
4566	int rc = PGM_GCPHYS_2_PTR(pVM, cr3 & X86_CR3_PAGE_MASK, &pPD);
4567	if (RT_FAILURE(rc) \|\| !pPD)
4568	{
4569	Log(("Page directory at %#x was not found in the page pool!\n", cr3 & X86_CR3_PAGE_MASK));
4570	return VERR_INVALID_PARAMETER;
4571	}
4572
4573	Log(("cr3=%08x cr4=%08x%s\n"
4574	"%-*s P - Present\n"
4575	"%-*s \| R/W - Read (0) / Write (1)\n"
4576	"%-*s \| \| U/S - User (1) / Supervisor (0)\n"
4577	"%-*s \| \| \| A - Accessed\n"
4578	"%-*s \| \| \| \| D - Dirty\n"
4579	"%-*s \| \| \| \| \| G - Global\n"
4580	"%-*s \| \| \| \| \| \| WT - Write thru\n"
4581	"%-*s \| \| \| \| \| \| \| CD - Cache disable\n"
4582	"%-*s \| \| \| \| \| \| \| \| AT - Attribute table (PAT)\n"
4583	"%-*s \| \| \| \| \| \| \| \| \| NX - No execute (K8)\n"
4584	"%-*s \| \| \| \| \| \| \| \| \| \| 4K/4M/2M - Page size.\n"
4585	"%-*s \| \| \| \| \| \| \| \| \| \| \| AVL - a=allocated; m=mapping; d=track dirty;\n"
4586	"%-*s \| \| \| \| \| \| \| \| \| \| \| \| p=permanent; v=validated;\n"
4587	"%-*s Level \| \| \| \| \| \| \| \| \| \| \| \| Page\n"
4588	/* xxxx n **** P R S A D G WT CD AT NX 4M AVL xxxxxxxxxxxxx
4589	- W U - - - -- -- -- -- -- 010 */
4590	, cr3, cr4, fLongMode ? " Long Mode" : "",
4591	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "",
4592	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "Address"));
4593
4594	for (unsigned i = 0; i < RT_ELEMENTS(pPD->a); i++)
4595	{
4596	X86PDE Pde = pPD->a[i];
4597	if (Pde.n.u1Present)
4598	{
4599	const uint32_t u32Address = i << X86_PD_SHIFT;
4600
4601	if ((cr4 & X86_CR4_PSE) && Pde.b.u1Size)
4602	Log(( /P R S A D G WT CD AT NX 4M a m d /
4603	"%08x 0 \| P %c %c %c %c %c %s %s %s .. 4M %c%c%c %08x\n",
4604	u32Address,
4605	Pde.b.u1Write ? 'W' : 'R',
4606	Pde.b.u1User ? 'U' : 'S',
4607	Pde.b.u1Accessed ? 'A' : '-',
4608	Pde.b.u1Dirty ? 'D' : '-',
4609	Pde.b.u1Global ? 'G' : '-',
4610	Pde.b.u1WriteThru ? "WT" : "--",
4611	Pde.b.u1CacheDisable? "CD" : "--",
4612	Pde.b.u1PAT ? "AT" : "--",
4613	Pde.u & RT_BIT(9) ? '1' : '0',
4614	Pde.u & RT_BIT(10) ? '1' : '0',
4615	Pde.u & RT_BIT(11) ? '1' : '0',
4616	pgmGstGet4MBPhysPage(&pVM->pgm.s, Pde)));
4617	/** @todo PhysSearch */
4618	else
4619	{
4620	Log(( /P R S A D G WT CD AT NX 4M a m d /
4621	"%08x 0 \| P %c %c %c %c %c %s %s .. .. 4K %c%c%c %08x\n",
4622	u32Address,
4623	Pde.n.u1Write ? 'W' : 'R',
4624	Pde.n.u1User ? 'U' : 'S',
4625	Pde.n.u1Accessed ? 'A' : '-',
4626	Pde.n.u1Reserved0 ? '?' : '.', /* ignored */
4627	Pde.n.u1Reserved1 ? '?' : '.', /* ignored */
4628	Pde.n.u1WriteThru ? "WT" : "--",
4629	Pde.n.u1CacheDisable? "CD" : "--",
4630	Pde.u & RT_BIT(9) ? '1' : '0',
4631	Pde.u & RT_BIT(10) ? '1' : '0',
4632	Pde.u & RT_BIT(11) ? '1' : '0',
4633	Pde.u & X86_PDE_PG_MASK));
4634	////if (cMaxDepth >= 1)
4635	{
4636	/** @todo what about using the page pool for mapping PTs? */
4637	RTGCPHYS GCPhys = Pde.u & X86_PDE_PG_MASK;
4638	PX86PT pPT = NULL;
4639
4640	rc = PGM_GCPHYS_2_PTR(pVM, GCPhys, &pPT);
4641
4642	int rc2 = VERR_INVALID_PARAMETER;
4643	if (pPT)
4644	rc2 = pgmR3DumpHierarchyGC32BitPT(pVM, pPT, u32Address, PhysSearch);
4645	else
4646	Log(("%08x error! Page table at %#x was not found in the page pool!\n", u32Address, GCPhys));
4647	if (rc2 < rc && RT_SUCCESS(rc))
4648	rc = rc2;
4649	}
4650	}
4651	}
4652	}
4653
4654	return rc;
4655	}
4656
4657
4658	/**
4659	* Dumps a page table hierarchy use only physical addresses and cr4/lm flags.
4660	*
4661	* @returns VBox status code (VINF_SUCCESS).
4662	* @param pVM The VM handle.
4663	* @param cr3 The root of the hierarchy.
4664	* @param cr4 The cr4, only PAE and PSE is currently used.
4665	* @param fLongMode Set if long mode, false if not long mode.
4666	* @param cMaxDepth Number of levels to dump.
4667	* @param pHlp Pointer to the output functions.
4668	*/
4669	VMMR3DECL(int) PGMR3DumpHierarchyHC(PVM pVM, uint64_t cr3, uint64_t cr4, bool fLongMode, unsigned cMaxDepth, PCDBGFINFOHLP pHlp)
4670	{
4671	if (!pHlp)
4672	pHlp = DBGFR3InfoLogHlp();
4673	if (!cMaxDepth)
4674	return VINF_SUCCESS;
4675	const unsigned cch = fLongMode ? 16 : 8;
4676	pHlp->pfnPrintf(pHlp,
4677	"cr3=%08x cr4=%08x%s\n"
4678	"%-*s P - Present\n"
4679	"%-*s \| R/W - Read (0) / Write (1)\n"
4680	"%-*s \| \| U/S - User (1) / Supervisor (0)\n"
4681	"%-*s \| \| \| A - Accessed\n"
4682	"%-*s \| \| \| \| D - Dirty\n"
4683	"%-*s \| \| \| \| \| G - Global\n"
4684	"%-*s \| \| \| \| \| \| WT - Write thru\n"
4685	"%-*s \| \| \| \| \| \| \| CD - Cache disable\n"
4686	"%-*s \| \| \| \| \| \| \| \| AT - Attribute table (PAT)\n"
4687	"%-*s \| \| \| \| \| \| \| \| \| NX - No execute (K8)\n"
4688	"%-*s \| \| \| \| \| \| \| \| \| \| 4K/4M/2M - Page size.\n"
4689	"%-*s \| \| \| \| \| \| \| \| \| \| \| AVL - a=allocated; m=mapping; d=track dirty;\n"
4690	"%-*s \| \| \| \| \| \| \| \| \| \| \| \| p=permanent; v=validated;\n"
4691	"%-*s Level \| \| \| \| \| \| \| \| \| \| \| \| Page\n"
4692	/* xxxx n **** P R S A D G WT CD AT NX 4M AVL xxxxxxxxxxxxx
4693	- W U - - - -- -- -- -- -- 010 */
4694	, cr3, cr4, fLongMode ? " Long Mode" : "",
4695	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "",
4696	cch, "", cch, "", cch, "", cch, "", cch, "", cch, "", cch, "Address");
4697	if (cr4 & X86_CR4_PAE)
4698	{
4699	if (fLongMode)
4700	return pgmR3DumpHierarchyHcPaePML4(pVM, cr3 & X86_CR3_PAGE_MASK, cr4, cMaxDepth, pHlp);
4701	return pgmR3DumpHierarchyHCPaePDPT(pVM, cr3 & X86_CR3_PAE_PAGE_MASK, 0, cr4, false, cMaxDepth, pHlp);
4702	}
4703	return pgmR3DumpHierarchyHC32BitPD(pVM, cr3 & X86_CR3_PAGE_MASK, cr4, cMaxDepth, pHlp);
4704	}
4705
4706	#ifdef VBOX_WITH_DEBUGGER
4707
4708	/**
4709	* The '.pgmram' command.
4710	*
4711	* @returns VBox status.
4712	* @param pCmd Pointer to the command descriptor (as registered).
4713	* @param pCmdHlp Pointer to command helper functions.
4714	* @param pVM Pointer to the current VM (if any).
4715	* @param paArgs Pointer to (readonly) array of arguments.
4716	* @param cArgs Number of arguments in the array.
4717	*/
4718	static DECLCALLBACK(int) pgmR3CmdRam(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4719	{
4720	/*
4721	* Validate input.
4722	*/
4723	if (!pVM)
4724	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4725	if (!pVM->pgm.s.pRamRangesRC)
4726	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no Ram is registered.\n");
4727
4728	/*
4729	* Dump the ranges.
4730	*/
4731	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "From - To (incl) pvHC\n");
4732	PPGMRAMRANGE pRam;
4733	for (pRam = pVM->pgm.s.pRamRangesR3; pRam; pRam = pRam->pNextR3)
4734	{
4735	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
4736	"%RGp - %RGp %p\n",
4737	pRam->GCPhys, pRam->GCPhysLast, pRam->pvR3);
4738	if (RT_FAILURE(rc))
4739	return rc;
4740	}
4741
4742	return VINF_SUCCESS;
4743	}
4744
4745
4746	/**
4747	* The '.pgmmap' command.
4748	*
4749	* @returns VBox status.
4750	* @param pCmd Pointer to the command descriptor (as registered).
4751	* @param pCmdHlp Pointer to command helper functions.
4752	* @param pVM Pointer to the current VM (if any).
4753	* @param paArgs Pointer to (readonly) array of arguments.
4754	* @param cArgs Number of arguments in the array.
4755	*/
4756	static DECLCALLBACK(int) pgmR3CmdMap(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4757	{
4758	/*
4759	* Validate input.
4760	*/
4761	if (!pVM)
4762	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4763	if (!pVM->pgm.s.pMappingsR3)
4764	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no mappings are registered.\n");
4765
4766	/*
4767	* Print message about the fixedness of the mappings.
4768	*/
4769	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, pVM->pgm.s.fMappingsFixed ? "The mappings are FIXED.\n" : "The mappings are FLOATING.\n");
4770	if (RT_FAILURE(rc))
4771	return rc;
4772
4773	/*
4774	* Dump the ranges.
4775	*/
4776	PPGMMAPPING pCur;
4777	for (pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
4778	{
4779	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
4780	"%08x - %08x %s\n",
4781	pCur->GCPtr, pCur->GCPtrLast, pCur->pszDesc);
4782	if (RT_FAILURE(rc))
4783	return rc;
4784	}
4785
4786	return VINF_SUCCESS;
4787	}
4788
4789
4790	/**
4791	* The '.pgmerror' and '.pgmerroroff' commands.
4792	*
4793	* @returns VBox status.
4794	* @param pCmd Pointer to the command descriptor (as registered).
4795	* @param pCmdHlp Pointer to command helper functions.
4796	* @param pVM Pointer to the current VM (if any).
4797	* @param paArgs Pointer to (readonly) array of arguments.
4798	* @param cArgs Number of arguments in the array.
4799	*/
4800	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4801	{
4802	/*
4803	* Validate input.
4804	*/
4805	if (!pVM)
4806	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4807	AssertReturn(cArgs == 0 \|\| (cArgs == 1 && paArgs[0].enmType == DBGCVAR_TYPE_STRING),
4808	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: Hit bug in the parser.\n"));
4809
4810	if (!cArgs)
4811	{
4812	/*
4813	* Print the list of error injection locations with status.
4814	*/
4815	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "PGM error inject locations:\n");
4816	pCmdHlp->pfnPrintf(pCmdHlp, NULL, " handy - %RTbool\n", pVM->pgm.s.fErrInjHandyPages);
4817	}
4818	else
4819	{
4820
4821	/*
4822	* String switch on where to inject the error.
4823	*/
4824	bool const fNewState = !strcmp(pCmd->pszCmd, "pgmerror");
4825	const char *pszWhere = paArgs[0].u.pszString;
4826	if (!strcmp(pszWhere, "handy"))
4827	ASMAtomicWriteBool(&pVM->pgm.s.fErrInjHandyPages, fNewState);
4828	else
4829	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: Invalid 'where' value: %s.\n", pszWhere);
4830	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "done\n");
4831	}
4832	return VINF_SUCCESS;
4833	}
4834
4835
4836	/**
4837	* The '.pgmsync' command.
4838	*
4839	* @returns VBox status.
4840	* @param pCmd Pointer to the command descriptor (as registered).
4841	* @param pCmdHlp Pointer to command helper functions.
4842	* @param pVM Pointer to the current VM (if any).
4843	* @param paArgs Pointer to (readonly) array of arguments.
4844	* @param cArgs Number of arguments in the array.
4845	*/
4846	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4847	{
4848	/** @todo SMP support */
4849	PVMCPU pVCpu = &pVM->aCpus[0];
4850
4851	/*
4852	* Validate input.
4853	*/
4854	if (!pVM)
4855	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4856
4857	/*
4858	* Force page directory sync.
4859	*/
4860	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
4861
4862	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Forcing page directory sync.\n");
4863	if (RT_FAILURE(rc))
4864	return rc;
4865
4866	return VINF_SUCCESS;
4867	}
4868
4869
4870	#ifdef VBOX_STRICT
4871	/**
4872	* The '.pgmassertcr3' command.
4873	*
4874	* @returns VBox status.
4875	* @param pCmd Pointer to the command descriptor (as registered).
4876	* @param pCmdHlp Pointer to command helper functions.
4877	* @param pVM Pointer to the current VM (if any).
4878	* @param paArgs Pointer to (readonly) array of arguments.
4879	* @param cArgs Number of arguments in the array.
4880	*/
4881	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4882	{
4883	/** @todo SMP support!! */
4884	PVMCPU pVCpu = &pVM->aCpus[0];
4885
4886	/*
4887	* Validate input.
4888	*/
4889	if (!pVM)
4890	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4891
4892	int rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Checking shadow CR3 page tables for consistency.\n");
4893	if (RT_FAILURE(rc))
4894	return rc;
4895
4896	PGMAssertCR3(pVM, pVCpu, CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu));
4897
4898	return VINF_SUCCESS;
4899	}
4900	#endif /* VBOX_STRICT */
4901
4902
4903	/**
4904	* The '.pgmsyncalways' command.
4905	*
4906	* @returns VBox status.
4907	* @param pCmd Pointer to the command descriptor (as registered).
4908	* @param pCmdHlp Pointer to command helper functions.
4909	* @param pVM Pointer to the current VM (if any).
4910	* @param paArgs Pointer to (readonly) array of arguments.
4911	* @param cArgs Number of arguments in the array.
4912	*/
4913	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
4914	{
4915	/** @todo SMP support!! */
4916	PVMCPU pVCpu = &pVM->aCpus[0];
4917
4918	/*
4919	* Validate input.
4920	*/
4921	if (!pVM)
4922	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires a VM to be selected.\n");
4923
4924	/*
4925	* Force page directory sync.
4926	*/
4927	if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
4928	{
4929	ASMAtomicAndU32(&pVCpu->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
4930	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Disabled permanent forced page directory syncing.\n");
4931	}
4932	else
4933	{
4934	ASMAtomicOrU32(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
4935	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
4936	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Enabled permanent forced page directory syncing.\n");
4937	}
4938	}
4939
4940	#endif /* VBOX_WITH_DEBUGGER */
4941
4942	/**
4943	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
4944	*/
4945	typedef struct PGMCHECKINTARGS
4946	{
4947	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
4948	PPGMPHYSHANDLER pPrevPhys;
4949	PPGMVIRTHANDLER pPrevVirt;
4950	PPGMPHYS2VIRTHANDLER pPrevPhys2Virt;
4951	PVM pVM;
4952	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
4953
4954	/**
4955	* Validate a node in the physical handler tree.
4956	*
4957	* @returns 0 on if ok, other wise 1.
4958	* @param pNode The handler node.
4959	* @param pvUser pVM.
4960	*/
4961	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4962	{
4963	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4964	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
4965	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4966	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4967	AssertReleaseMsg( !pArgs->pPrevPhys
4968	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
4969	("pPrevPhys=%p %RGp-%RGp %s\n"
4970	" pCur=%p %RGp-%RGp %s\n",
4971	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
4972	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4973	pArgs->pPrevPhys = pCur;
4974	return 0;
4975	}
4976
4977
4978	/**
4979	* Validate a node in the virtual handler tree.
4980	*
4981	* @returns 0 on if ok, other wise 1.
4982	* @param pNode The handler node.
4983	* @param pvUser pVM.
4984	*/
4985	static DECLCALLBACK(int) pgmR3CheckIntegrityVirtHandlerNode(PAVLROGCPTRNODECORE pNode, void *pvUser)
4986	{
4987	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4988	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
4989	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4990	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGv-%RGv %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4991	AssertReleaseMsg( !pArgs->pPrevVirt
4992	\|\| (pArgs->fLeftToRight ? pArgs->pPrevVirt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevVirt->Core.KeyLast > pCur->Core.Key),
4993	("pPrevVirt=%p %RGv-%RGv %s\n"
4994	" pCur=%p %RGv-%RGv %s\n",
4995	pArgs->pPrevVirt, pArgs->pPrevVirt->Core.Key, pArgs->pPrevVirt->Core.KeyLast, pArgs->pPrevVirt->pszDesc,
4996	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4997	for (unsigned iPage = 0; iPage < pCur->cPages; iPage++)
4998	{
4999	AssertReleaseMsg(pCur->aPhysToVirt[iPage].offVirtHandler == -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage]),
5000	("pCur=%p %RGv-%RGv %s\n"
5001	"iPage=%d offVirtHandle=%#x expected %#x\n",
5002	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc,
5003	iPage, pCur->aPhysToVirt[iPage].offVirtHandler, -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage])));
5004	}
5005	pArgs->pPrevVirt = pCur;
5006	return 0;
5007	}
5008
5009
5010	/**
5011	* Validate a node in the virtual handler tree.
5012	*
5013	* @returns 0 on if ok, other wise 1.
5014	* @param pNode The handler node.
5015	* @param pvUser pVM.
5016	*/
5017	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysToVirtHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
5018	{
5019	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
5020	PPGMPHYS2VIRTHANDLER pCur = (PPGMPHYS2VIRTHANDLER)pNode;
5021	AssertReleaseMsgReturn(!((uintptr_t)pCur & 3), ("\n"), 1);
5022	AssertReleaseMsgReturn(!(pCur->offVirtHandler & 3), ("\n"), 1);
5023	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp\n", pCur, pCur->Core.Key, pCur->Core.KeyLast));
5024	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
5025	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
5026	("pPrevPhys2Virt=%p %RGp-%RGp\n"
5027	" pCur=%p %RGp-%RGp\n",
5028	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
5029	pCur, pCur->Core.Key, pCur->Core.KeyLast));
5030	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
5031	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
5032	("pPrevPhys2Virt=%p %RGp-%RGp\n"
5033	" pCur=%p %RGp-%RGp\n",
5034	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
5035	pCur, pCur->Core.Key, pCur->Core.KeyLast));
5036	AssertReleaseMsg((pCur->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD),
5037	("pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
5038	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
5039	if (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)
5040	{
5041	PPGMPHYS2VIRTHANDLER pCur2 = pCur;
5042	for (;;)
5043	{
5044	pCur2 = (PPGMPHYS2VIRTHANDLER)((intptr_t)pCur + (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK));
5045	AssertReleaseMsg(pCur2 != pCur,
5046	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
5047	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
5048	AssertReleaseMsg((pCur2->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == PGMPHYS2VIRTHANDLER_IN_TREE,
5049	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
5050	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
5051	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
5052	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
5053	AssertReleaseMsg((pCur2->Core.Key ^ pCur->Core.Key) < PAGE_SIZE,
5054	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
5055	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
5056	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
5057	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
5058	AssertReleaseMsg((pCur2->Core.KeyLast ^ pCur->Core.KeyLast) < PAGE_SIZE,
5059	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
5060	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
5061	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
5062	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
5063	if (!(pCur2->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK))
5064	break;
5065	}
5066	}
5067
5068	pArgs->pPrevPhys2Virt = pCur;
5069	return 0;
5070	}
5071
5072
5073	/**
5074	* Perform an integrity check on the PGM component.
5075	*
5076	* @returns VINF_SUCCESS if everything is fine.
5077	* @returns VBox error status after asserting on integrity breach.
5078	* @param pVM The VM handle.
5079	*/
5080	VMMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
5081	{
5082	AssertReleaseReturn(pVM->pgm.s.offVM, VERR_INTERNAL_ERROR);
5083
5084	/*
5085	* Check the trees.
5086	*/
5087	int cErrors = 0;
5088	const static PGMCHECKINTARGS s_LeftToRight = { true, NULL, NULL, NULL, pVM };
5089	const static PGMCHECKINTARGS s_RightToLeft = { false, NULL, NULL, NULL, pVM };
5090	PGMCHECKINTARGS Args = s_LeftToRight;
5091	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
5092	Args = s_RightToLeft;
5093	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
5094	Args = s_LeftToRight;
5095	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
5096	Args = s_RightToLeft;
5097	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
5098	Args = s_LeftToRight;
5099	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
5100	Args = s_RightToLeft;
5101	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
5102	Args = s_LeftToRight;
5103	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, true, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
5104	Args = s_RightToLeft;
5105	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, false, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
5106
5107	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
5108	}
5109
5110

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source: vbox/trunk/src/VBox/VMM/PGM.cpp@ 20786

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