PGM.cpp@ 44730

Last change on this file since 44730 was 44730, checked in by vboxsync, 12 years ago
BUGZ:6606 Guest CPU offlining/onlining now works. Renamed PGMR3ResetUnpluggedCpu() -> PGMR3ResetCpu().
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1	/* $Id: PGM.cpp 44730 2013-02-18 12:43:02Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor. (Mixing stuff here, not good?)
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/** @page pg_pgm PGM - The Page Manager and Monitor
20	*
21	* @see grp_pgm,
22	* @ref pg_pgm_pool,
23	* @ref pg_pgm_phys.
24	*
25	*
26	* @section sec_pgm_modes Paging Modes
27	*
28	* There are three memory contexts: Host Context (HC), Guest Context (GC)
29	* and intermediate context. When talking about paging HC can also be referred
30	* to as "host paging", and GC referred to as "shadow paging".
31	*
32	* We define three basic paging modes: 32-bit, PAE and AMD64. The host paging mode
33	* is defined by the host operating system. The mode used in the shadow paging mode
34	* depends on the host paging mode and what the mode the guest is currently in. The
35	* following relation between the two is defined:
36	*
37	* @verbatim
38	Host > 32-bit \| PAE \| AMD64 \|
39	Guest \| \| \| \|
40	==v================================
41	32-bit 32-bit PAE PAE
42	-------\|--------\|--------\|--------\|
43	PAE PAE PAE PAE
44	-------\|--------\|--------\|--------\|
45	AMD64 AMD64 AMD64 AMD64
46	-------\|--------\|--------\|--------\| @endverbatim
47	*
48	* All configuration except those in the diagonal (upper left) are expected to
49	* require special effort from the switcher (i.e. a bit slower).
50	*
51	*
52	*
53	*
54	* @section sec_pgm_shw The Shadow Memory Context
55	*
56	*
57	* [..]
58	*
59	* Because of guest context mappings requires PDPT and PML4 entries to allow
60	* writing on AMD64, the two upper levels will have fixed flags whatever the
61	* guest is thinking of using there. So, when shadowing the PD level we will
62	* calculate the effective flags of PD and all the higher levels. In legacy
63	* PAE mode this only applies to the PWT and PCD bits (the rest are
64	* ignored/reserved/MBZ). We will ignore those bits for the present.
65	*
66	*
67	*
68	* @section sec_pgm_int The Intermediate Memory Context
69	*
70	* The world switch goes thru an intermediate memory context which purpose it is
71	* to provide different mappings of the switcher code. All guest mappings are also
72	* present in this context.
73	*
74	* The switcher code is mapped at the same location as on the host, at an
75	* identity mapped location (physical equals virtual address), and at the
76	* hypervisor location. The identity mapped location is for when the world
77	* switches that involves disabling paging.
78	*
79	* PGM maintain page tables for 32-bit, PAE and AMD64 paging modes. This
80	* simplifies switching guest CPU mode and consistency at the cost of more
81	* code to do the work. All memory use for those page tables is located below
82	* 4GB (this includes page tables for guest context mappings).
83	*
84	*
85	* @subsection subsec_pgm_int_gc Guest Context Mappings
86	*
87	* During assignment and relocation of a guest context mapping the intermediate
88	* memory context is used to verify the new location.
89	*
90	* Guest context mappings are currently restricted to below 4GB, for reasons
91	* of simplicity. This may change when we implement AMD64 support.
92	*
93	*
94	*
95	*
96	* @section sec_pgm_misc Misc
97	*
98	*
99	* @subsection sec_pgm_misc_A20 The A20 Gate
100	*
101	* PGM implements the A20 gate masking when translating a virtual guest address
102	* into a physical address for CPU access, i.e. PGMGstGetPage (and friends) and
103	* the code reading the guest page table entries during shadowing. The masking
104	* is done consistenly for all CPU modes, paged ones included. Large pages are
105	* also masked correctly. (On current CPUs, experiments indicates that AMD does
106	* not apply A20M in paged modes and intel only does it for the 2nd MB of
107	* memory.)
108	*
109	* The A20 gate implementation is per CPU core. It can be configured on a per
110	* core basis via the keyboard device and PC architecture device. This is
111	* probably not exactly how real CPUs do it, but SMP and A20 isn't a place where
112	* guest OSes try pushing things anyway, so who cares. (On current real systems
113	* the A20M signal is probably only sent to the boot CPU and it affects all
114	* thread and probably all cores in that package.)
115	*
116	* The keyboard device and the PC architecture device doesn't OR their A20
117	* config bits together, rather they are currently implemented such that they
118	* mirror the CPU state. So, flipping the bit in either of them will change the
119	* A20 state. (On real hardware the bits of the two devices should probably be
120	* ORed together to indicate enabled, i.e. both needs to be cleared to disable
121	* A20 masking.)
122	*
123	* The A20 state will change immediately, transmeta fashion. There is no delays
124	* due to buses, wiring or other physical stuff. (On real hardware there are
125	* normally delays, the delays differs between the two devices and probably also
126	* between chipsets and CPU generations. Note that it's said that transmeta CPUs
127	* does the change immediately like us, they apparently intercept/handles the
128	* port accesses in microcode. Neat.)
129	*
130	* @sa http://en.wikipedia.org/wiki/A20_line#The_80286_and_the_high_memory_area
131	*
132	*
133	* @subsection subsec_pgm_misc_diff Differences Between Legacy PAE and Long Mode PAE
134	*
135	* The differences between legacy PAE and long mode PAE are:
136	* -# PDPE bits 1, 2, 5 and 6 are defined differently. In leagcy mode they are
137	* all marked down as must-be-zero, while in long mode 1, 2 and 5 have the
138	* usual meanings while 6 is ignored (AMD). This means that upon switching to
139	* legacy PAE mode we'll have to clear these bits and when going to long mode
140	* they must be set. This applies to both intermediate and shadow contexts,
141	* however we don't need to do it for the intermediate one since we're
142	* executing with CR0.WP at that time.
143	* -# CR3 allows a 32-byte aligned address in legacy mode, while in long mode
144	* a page aligned one is required.
145	*
146	*
147	* @section sec_pgm_handlers Access Handlers
148	*
149	* Placeholder.
150	*
151	*
152	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
153	*
154	* Placeholder.
155	*
156	*
157	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
158	*
159	* We currently implement three types of virtual access handlers: ALL, WRITE
160	* and HYPERVISOR (WRITE). See PGMVIRTHANDLERTYPE for some more details.
161	*
162	* The HYPERVISOR access handlers is kept in a separate tree since it doesn't apply
163	* to physical pages (PGMTREES::HyperVirtHandlers) and only needs to be consulted in
164	* a special \#PF case. The ALL and WRITE are in the PGMTREES::VirtHandlers tree, the
165	* rest of this section is going to be about these handlers.
166	*
167	* We'll go thru the life cycle of a handler and try make sense of it all, don't know
168	* how successful this is gonna be...
169	*
170	* 1. A handler is registered thru the PGMR3HandlerVirtualRegister and
171	* PGMHandlerVirtualRegisterEx APIs. We check for conflicting virtual handlers
172	* and create a new node that is inserted into the AVL tree (range key). Then
173	* a full PGM resync is flagged (clear pool, sync cr3, update virtual bit of PGMPAGE).
174	*
175	* 2. The following PGMSyncCR3/SyncCR3 operation will first make invoke HandlerVirtualUpdate.
176	*
177	* 2a. HandlerVirtualUpdate will will lookup all the pages covered by virtual handlers
178	* via the current guest CR3 and update the physical page -> virtual handler
179	* translation. Needless to say, this doesn't exactly scale very well. If any changes
180	* are detected, it will flag a virtual bit update just like we did on registration.
181	* PGMPHYS pages with changes will have their virtual handler state reset to NONE.
182	*
183	* 2b. The virtual bit update process will iterate all the pages covered by all the
184	* virtual handlers and update the PGMPAGE virtual handler state to the max of all
185	* virtual handlers on that page.
186	*
187	* 2c. Back in SyncCR3 we will now flush the entire shadow page cache to make sure
188	* we don't miss any alias mappings of the monitored pages.
189	*
190	* 2d. SyncCR3 will then proceed with syncing the CR3 table.
191	*
192	* 3. \#PF(np,read) on a page in the range. This will cause it to be synced
193	* read-only and resumed if it's a WRITE handler. If it's an ALL handler we
194	* will call the handlers like in the next step. If the physical mapping has
195	* changed we will - some time in the future - perform a handler callback
196	* (optional) and update the physical -> virtual handler cache.
197	*
198	* 4. \#PF(,write) on a page in the range. This will cause the handler to
199	* be invoked.
200	*
201	* 5. The guest invalidates the page and changes the physical backing or
202	* unmaps it. This should cause the invalidation callback to be invoked
203	* (it might not yet be 100% perfect). Exactly what happens next... is
204	* this where we mess up and end up out of sync for a while?
205	*
206	* 6. The handler is deregistered by the client via PGMHandlerVirtualDeregister.
207	* We will then set all PGMPAGEs in the physical -> virtual handler cache for
208	* this handler to NONE and trigger a full PGM resync (basically the same
209	* as int step 1). Which means 2 is executed again.
210	*
211	*
212	* @subsubsection sub_sec_pgm_handler_virt_todo TODOs
213	*
214	* There is a bunch of things that needs to be done to make the virtual handlers
215	* work 100% correctly and work more efficiently.
216	*
217	* The first bit hasn't been implemented yet because it's going to slow the
218	* whole mess down even more, and besides it seems to be working reliably for
219	* our current uses. OTOH, some of the optimizations might end up more or less
220	* implementing the missing bits, so we'll see.
221	*
222	* On the optimization side, the first thing to do is to try avoid unnecessary
223	* cache flushing. Then try team up with the shadowing code to track changes
224	* in mappings by means of access to them (shadow in), updates to shadows pages,
225	* invlpg, and shadow PT discarding (perhaps).
226	*
227	* Some idea that have popped up for optimization for current and new features:
228	* - bitmap indicating where there are virtual handlers installed.
229	* (4KB => 220 pages, page 212 => covers 32-bit address space 1:1!)
230	* - Further optimize this by min/max (needs min/max avl getters).
231	* - Shadow page table entry bit (if any left)?
232	*
233	*/
234
235
236	/** @page pg_pgm_phys PGM Physical Guest Memory Management
237	*
238	*
239	* Objectives:
240	* - Guest RAM over-commitment using memory ballooning,
241	* zero pages and general page sharing.
242	* - Moving or mirroring a VM onto a different physical machine.
243	*
244	*
245	* @subsection subsec_pgmPhys_Definitions Definitions
246	*
247	* Allocation chunk - A RTR0MemObjAllocPhysNC object and the tracking
248	* machinery associated with it.
249	*
250	*
251	*
252	*
253	* @subsection subsec_pgmPhys_AllocPage Allocating a page.
254	*
255	* Initially we map all guest memory to the (per VM) zero page, which
256	* means that none of the read functions will cause pages to be allocated.
257	*
258	* Exception, access bit in page tables that have been shared. This must
259	* be handled, but we must also make sure PGMGst*Modify doesn't make
260	* unnecessary modifications.
261	*
262	* Allocation points:
263	* - PGMPhysSimpleWriteGCPhys and PGMPhysWrite.
264	* - Replacing a zero page mapping at \#PF.
265	* - Replacing a shared page mapping at \#PF.
266	* - ROM registration (currently MMR3RomRegister).
267	* - VM restore (pgmR3Load).
268	*
269	* For the first three it would make sense to keep a few pages handy
270	* until we've reached the max memory commitment for the VM.
271	*
272	* For the ROM registration, we know exactly how many pages we need
273	* and will request these from ring-0. For restore, we will save
274	* the number of non-zero pages in the saved state and allocate
275	* them up front. This would allow the ring-0 component to refuse
276	* the request if the isn't sufficient memory available for VM use.
277	*
278	* Btw. for both ROM and restore allocations we won't be requiring
279	* zeroed pages as they are going to be filled instantly.
280	*
281	*
282	* @subsection subsec_pgmPhys_FreePage Freeing a page
283	*
284	* There are a few points where a page can be freed:
285	* - After being replaced by the zero page.
286	* - After being replaced by a shared page.
287	* - After being ballooned by the guest additions.
288	* - At reset.
289	* - At restore.
290	*
291	* When freeing one or more pages they will be returned to the ring-0
292	* component and replaced by the zero page.
293	*
294	* The reasoning for clearing out all the pages on reset is that it will
295	* return us to the exact same state as on power on, and may thereby help
296	* us reduce the memory load on the system. Further it might have a
297	* (temporary) positive influence on memory fragmentation (@see subsec_pgmPhys_Fragmentation).
298	*
299	* On restore, as mention under the allocation topic, pages should be
300	* freed / allocated depending on how many is actually required by the
301	* new VM state. The simplest approach is to do like on reset, and free
302	* all non-ROM pages and then allocate what we need.
303	*
304	* A measure to prevent some fragmentation, would be to let each allocation
305	* chunk have some affinity towards the VM having allocated the most pages
306	* from it. Also, try make sure to allocate from allocation chunks that
307	* are almost full. Admittedly, both these measures might work counter to
308	* our intentions and its probably not worth putting a lot of effort,
309	* cpu time or memory into this.
310	*
311	*
312	* @subsection subsec_pgmPhys_SharePage Sharing a page
313	*
314	* The basic idea is that there there will be a idle priority kernel
315	* thread walking the non-shared VM pages hashing them and looking for
316	* pages with the same checksum. If such pages are found, it will compare
317	* them byte-by-byte to see if they actually are identical. If found to be
318	* identical it will allocate a shared page, copy the content, check that
319	* the page didn't change while doing this, and finally request both the
320	* VMs to use the shared page instead. If the page is all zeros (special
321	* checksum and byte-by-byte check) it will request the VM that owns it
322	* to replace it with the zero page.
323	*
324	* To make this efficient, we will have to make sure not to try share a page
325	* that will change its contents soon. This part requires the most work.
326	* A simple idea would be to request the VM to write monitor the page for
327	* a while to make sure it isn't modified any time soon. Also, it may
328	* make sense to skip pages that are being write monitored since this
329	* information is readily available to the thread if it works on the
330	* per-VM guest memory structures (presently called PGMRAMRANGE).
331	*
332	*
333	* @subsection subsec_pgmPhys_Fragmentation Fragmentation Concerns and Counter Measures
334	*
335	* The pages are organized in allocation chunks in ring-0, this is a necessity
336	* if we wish to have an OS agnostic approach to this whole thing. (On Linux we
337	* could easily work on a page-by-page basis if we liked. Whether this is possible
338	* or efficient on NT I don't quite know.) Fragmentation within these chunks may
339	* become a problem as part of the idea here is that we wish to return memory to
340	* the host system.
341	*
342	* For instance, starting two VMs at the same time, they will both allocate the
343	* guest memory on-demand and if permitted their page allocations will be
344	* intermixed. Shut down one of the two VMs and it will be difficult to return
345	* any memory to the host system because the page allocation for the two VMs are
346	* mixed up in the same allocation chunks.
347	*
348	* To further complicate matters, when pages are freed because they have been
349	* ballooned or become shared/zero the whole idea is that the page is supposed
350	* to be reused by another VM or returned to the host system. This will cause
351	* allocation chunks to contain pages belonging to different VMs and prevent
352	* returning memory to the host when one of those VM shuts down.
353	*
354	* The only way to really deal with this problem is to move pages. This can
355	* either be done at VM shutdown and or by the idle priority worker thread
356	* that will be responsible for finding sharable/zero pages. The mechanisms
357	* involved for coercing a VM to move a page (or to do it for it) will be
358	* the same as when telling it to share/zero a page.
359	*
360	*
361	* @subsection subsec_pgmPhys_Tracking Tracking Structures And Their Cost
362	*
363	* There's a difficult balance between keeping the per-page tracking structures
364	* (global and guest page) easy to use and keeping them from eating too much
365	* memory. We have limited virtual memory resources available when operating in
366	* 32-bit kernel space (on 64-bit there'll it's quite a different story). The
367	* tracking structures will be attempted designed such that we can deal with up
368	* to 32GB of memory on a 32-bit system and essentially unlimited on 64-bit ones.
369	*
370	*
371	* @subsubsection subsubsec_pgmPhys_Tracking_Kernel Kernel Space
372	*
373	* @see pg_GMM
374	*
375	* @subsubsection subsubsec_pgmPhys_Tracking_PerVM Per-VM
376	*
377	* Fixed info is the physical address of the page (HCPhys) and the page id
378	* (described above). Theoretically we'll need 48(-12) bits for the HCPhys part.
379	* Today we've restricting ourselves to 40(-12) bits because this is the current
380	* restrictions of all AMD64 implementations (I think Barcelona will up this
381	* to 48(-12) bits, not that it really matters) and I needed the bits for
382	* tracking mappings of a page. 48-12 = 36. That leaves 28 bits, which means a
383	* decent range for the page id: 2^(28+12) = 1024TB.
384	*
385	* In additions to these, we'll have to keep maintaining the page flags as we
386	* currently do. Although it wouldn't harm to optimize these quite a bit, like
387	* for instance the ROM shouldn't depend on having a write handler installed
388	* in order for it to become read-only. A RO/RW bit should be considered so
389	* that the page syncing code doesn't have to mess about checking multiple
390	* flag combinations (ROM \|\| RW handler \|\| write monitored) in order to
391	* figure out how to setup a shadow PTE. But this of course, is second
392	* priority at present. Current this requires 12 bits, but could probably
393	* be optimized to ~8.
394	*
395	* Then there's the 24 bits used to track which shadow page tables are
396	* currently mapping a page for the purpose of speeding up physical
397	* access handlers, and thereby the page pool cache. More bit for this
398	* purpose wouldn't hurt IIRC.
399	*
400	* Then there is a new bit in which we need to record what kind of page
401	* this is, shared, zero, normal or write-monitored-normal. This'll
402	* require 2 bits. One bit might be needed for indicating whether a
403	* write monitored page has been written to. And yet another one or
404	* two for tracking migration status. 3-4 bits total then.
405	*
406	* Whatever is left will can be used to record the sharabilitiy of a
407	* page. The page checksum will not be stored in the per-VM table as
408	* the idle thread will not be permitted to do modifications to it.
409	* It will instead have to keep its own working set of potentially
410	* shareable pages and their check sums and stuff.
411	*
412	* For the present we'll keep the current packing of the
413	* PGMRAMRANGE::aHCPhys to keep the changes simple, only of course,
414	* we'll have to change it to a struct with a total of 128-bits at
415	* our disposal.
416	*
417	* The initial layout will be like this:
418	* @verbatim
419	RTHCPHYS HCPhys; The current stuff.
420	63:40 Current shadow PT tracking stuff.
421	39:12 The physical page frame number.
422	11:0 The current flags.
423	uint32_t u28PageId : 28; The page id.
424	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
425	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
426	uint32_t u1Reserved : 1; Reserved for later.
427	uint32_t u32Reserved; Reserved for later, mostly sharing stats.
428	@endverbatim
429	*
430	* The final layout will be something like this:
431	* @verbatim
432	RTHCPHYS HCPhys; The current stuff.
433	63:48 High page id (12+).
434	47:12 The physical page frame number.
435	11:0 Low page id.
436	uint32_t fReadOnly : 1; Whether it's readonly page (rom or monitored in some way).
437	uint32_t u3Type : 3; The page type {RESERVED, MMIO, MMIO2, ROM, shadowed ROM, RAM}.
438	uint32_t u2PhysMon : 2; Physical access handler type {none, read, write, all}.
439	uint32_t u2VirtMon : 2; Virtual access handler type {none, read, write, all}..
440	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
441	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
442	uint32_t u20Reserved : 20; Reserved for later, mostly sharing stats.
443	uint32_t u32Tracking; The shadow PT tracking stuff, roughly.
444	@endverbatim
445	*
446	* Cost wise, this means we'll double the cost for guest memory. There isn't anyway
447	* around that I'm afraid. It means that the cost of dealing out 32GB of memory
448	* to one or more VMs is: (32GB >> PAGE_SHIFT) * 16 bytes, or 128MBs. Or another
449	* example, the VM heap cost when assigning 1GB to a VM will be: 4MB.
450	*
451	* A couple of cost examples for the total cost per-VM + kernel.
452	* 32-bit Windows and 32-bit linux:
453	* 1GB guest ram, 256K pages: 4MB + 2MB(+) = 6MB
454	* 4GB guest ram, 1M pages: 16MB + 8MB(+) = 24MB
455	* 32GB guest ram, 8M pages: 128MB + 64MB(+) = 192MB
456	* 64-bit Windows and 64-bit linux:
457	* 1GB guest ram, 256K pages: 4MB + 3MB(+) = 7MB
458	* 4GB guest ram, 1M pages: 16MB + 12MB(+) = 28MB
459	* 32GB guest ram, 8M pages: 128MB + 96MB(+) = 224MB
460	*
461	* UPDATE - 2007-09-27:
462	* Will need a ballooned flag/state too because we cannot
463	* trust the guest 100% and reporting the same page as ballooned more
464	* than once will put the GMM off balance.
465	*
466	*
467	* @subsection subsec_pgmPhys_Serializing Serializing Access
468	*
469	* Initially, we'll try a simple scheme:
470	*
471	* - The per-VM RAM tracking structures (PGMRAMRANGE) is only modified
472	* by the EMT thread of that VM while in the pgm critsect.
473	* - Other threads in the VM process that needs to make reliable use of
474	* the per-VM RAM tracking structures will enter the critsect.
475	* - No process external thread or kernel thread will ever try enter
476	* the pgm critical section, as that just won't work.
477	* - The idle thread (and similar threads) doesn't not need 100% reliable
478	* data when performing it tasks as the EMT thread will be the one to
479	* do the actual changes later anyway. So, as long as it only accesses
480	* the main ram range, it can do so by somehow preventing the VM from
481	* being destroyed while it works on it...
482	*
483	* - The over-commitment management, including the allocating/freeing
484	* chunks, is serialized by a ring-0 mutex lock (a fast one since the
485	* more mundane mutex implementation is broken on Linux).
486	* - A separate mutex is protecting the set of allocation chunks so
487	* that pages can be shared or/and freed up while some other VM is
488	* allocating more chunks. This mutex can be take from under the other
489	* one, but not the other way around.
490	*
491	*
492	* @subsection subsec_pgmPhys_Request VM Request interface
493	*
494	* When in ring-0 it will become necessary to send requests to a VM so it can
495	* for instance move a page while defragmenting during VM destroy. The idle
496	* thread will make use of this interface to request VMs to setup shared
497	* pages and to perform write monitoring of pages.
498	*
499	* I would propose an interface similar to the current VMReq interface, similar
500	* in that it doesn't require locking and that the one sending the request may
501	* wait for completion if it wishes to. This shouldn't be very difficult to
502	* realize.
503	*
504	* The requests themselves are also pretty simple. They are basically:
505	* -# Check that some precondition is still true.
506	* -# Do the update.
507	* -# Update all shadow page tables involved with the page.
508	*
509	* The 3rd step is identical to what we're already doing when updating a
510	* physical handler, see pgmHandlerPhysicalSetRamFlagsAndFlushShadowPTs.
511	*
512	*
513	*
514	* @section sec_pgmPhys_MappingCaches Mapping Caches
515	*
516	* In order to be able to map in and out memory and to be able to support
517	* guest with more RAM than we've got virtual address space, we'll employing
518	* a mapping cache. Normally ring-0 and ring-3 can share the same cache,
519	* however on 32-bit darwin the ring-0 code is running in a different memory
520	* context and therefore needs a separate cache. In raw-mode context we also
521	* need a separate cache. The 32-bit darwin mapping cache and the one for
522	* raw-mode context share a lot of code, see PGMRZDYNMAP.
523	*
524	*
525	* @subsection subsec_pgmPhys_MappingCaches_R3 Ring-3
526	*
527	* We've considered implementing the ring-3 mapping cache page based but found
528	* that this was bother some when one had to take into account TLBs+SMP and
529	* portability (missing the necessary APIs on several platforms). There were
530	* also some performance concerns with this approach which hadn't quite been
531	* worked out.
532	*
533	* Instead, we'll be mapping allocation chunks into the VM process. This simplifies
534	* matters greatly quite a bit since we don't need to invent any new ring-0 stuff,
535	* only some minor RTR0MEMOBJ mapping stuff. The main concern here is that mapping
536	* compared to the previous idea is that mapping or unmapping a 1MB chunk is more
537	* costly than a single page, although how much more costly is uncertain. We'll
538	* try address this by using a very big cache, preferably bigger than the actual
539	* VM RAM size if possible. The current VM RAM sizes should give some idea for
540	* 32-bit boxes, while on 64-bit we can probably get away with employing an
541	* unlimited cache.
542	*
543	* The cache have to parts, as already indicated, the ring-3 side and the
544	* ring-0 side.
545	*
546	* The ring-0 will be tied to the page allocator since it will operate on the
547	* memory objects it contains. It will therefore require the first ring-0 mutex
548	* discussed in @ref subsec_pgmPhys_Serializing. We
549	* some double house keeping wrt to who has mapped what I think, since both
550	* VMMR0.r0 and RTR0MemObj will keep track of mapping relations
551	*
552	* The ring-3 part will be protected by the pgm critsect. For simplicity, we'll
553	* require anyone that desires to do changes to the mapping cache to do that
554	* from within this critsect. Alternatively, we could employ a separate critsect
555	* for serializing changes to the mapping cache as this would reduce potential
556	* contention with other threads accessing mappings unrelated to the changes
557	* that are in process. We can see about this later, contention will show
558	* up in the statistics anyway, so it'll be simple to tell.
559	*
560	* The organization of the ring-3 part will be very much like how the allocation
561	* chunks are organized in ring-0, that is in an AVL tree by chunk id. To avoid
562	* having to walk the tree all the time, we'll have a couple of lookaside entries
563	* like in we do for I/O ports and MMIO in IOM.
564	*
565	* The simplified flow of a PGMPhysRead/Write function:
566	* -# Enter the PGM critsect.
567	* -# Lookup GCPhys in the ram ranges and get the Page ID.
568	* -# Calc the Allocation Chunk ID from the Page ID.
569	* -# Check the lookaside entries and then the AVL tree for the Chunk ID.
570	* If not found in cache:
571	* -# Call ring-0 and request it to be mapped and supply
572	* a chunk to be unmapped if the cache is maxed out already.
573	* -# Insert the new mapping into the AVL tree (id + R3 address).
574	* -# Update the relevant lookaside entry and return the mapping address.
575	* -# Do the read/write according to monitoring flags and everything.
576	* -# Leave the critsect.
577	*
578	*
579	* @section sec_pgmPhys_Fallback Fallback
580	*
581	* Current all the "second tier" hosts will not support the RTR0MemObjAllocPhysNC
582	* API and thus require a fallback.
583	*
584	* So, when RTR0MemObjAllocPhysNC returns VERR_NOT_SUPPORTED the page allocator
585	* will return to the ring-3 caller (and later ring-0) and asking it to seed
586	* the page allocator with some fresh pages (VERR_GMM_SEED_ME). Ring-3 will
587	* then perform an SUPR3PageAlloc(cbChunk >> PAGE_SHIFT) call and make a
588	* "SeededAllocPages" call to ring-0.
589	*
590	* The first time ring-0 sees the VERR_NOT_SUPPORTED failure it will disable
591	* all page sharing (zero page detection will continue). It will also force
592	* all allocations to come from the VM which seeded the page. Both these
593	* measures are taken to make sure that there will never be any need for
594	* mapping anything into ring-3 - everything will be mapped already.
595	*
596	* Whether we'll continue to use the current MM locked memory management
597	* for this I don't quite know (I'd prefer not to and just ditch that all
598	* together), we'll see what's simplest to do.
599	*
600	*
601	*
602	* @section sec_pgmPhys_Changes Changes
603	*
604	* Breakdown of the changes involved?
605	*/
606
607	/*******************************************************************************
608	* Header Files *
609	*******************************************************************************/
610	#define LOG_GROUP LOG_GROUP_PGM
611	#include <VBox/vmm/dbgf.h>
612	#include <VBox/vmm/pgm.h>
613	#include <VBox/vmm/cpum.h>
614	#include <VBox/vmm/iom.h>
615	#include <VBox/sup.h>
616	#include <VBox/vmm/mm.h>
617	#include <VBox/vmm/em.h>
618	#include <VBox/vmm/stam.h>
619	#ifdef VBOX_WITH_REM
620	# include <VBox/vmm/rem.h>
621	#endif
622	#include <VBox/vmm/selm.h>
623	#include <VBox/vmm/ssm.h>
624	#include <VBox/vmm/hm.h>
625	#include "PGMInternal.h"
626	#include <VBox/vmm/vm.h>
627	#include <VBox/vmm/uvm.h>
628	#include "PGMInline.h"
629
630	#include <VBox/dbg.h>
631	#include <VBox/param.h>
632	#include <VBox/err.h>
633
634	#include <iprt/asm.h>
635	#include <iprt/asm-amd64-x86.h>
636	#include <iprt/assert.h>
637	#include <iprt/env.h>
638	#include <iprt/mem.h>
639	#include <iprt/file.h>
640	#include <iprt/string.h>
641	#include <iprt/thread.h>
642
643
644	/*******************************************************************************
645	* Internal Functions *
646	*******************************************************************************/
647	static int pgmR3InitPaging(PVM pVM);
648	static int pgmR3InitStats(PVM pVM);
649	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
650	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
651	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
652	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser);
653	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
654	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
655	#ifdef VBOX_STRICT
656	static FNVMATSTATE pgmR3ResetNoMorePhysWritesFlag;
657	#endif
658	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0);
659	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst);
660	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher);
661
662	#ifdef VBOX_WITH_DEBUGGER
663	static FNDBGCCMD pgmR3CmdError;
664	static FNDBGCCMD pgmR3CmdSync;
665	static FNDBGCCMD pgmR3CmdSyncAlways;
666	# ifdef VBOX_STRICT
667	static FNDBGCCMD pgmR3CmdAssertCR3;
668	# endif
669	static FNDBGCCMD pgmR3CmdPhysToFile;
670	#endif
671
672
673	/*******************************************************************************
674	* Global Variables *
675	*******************************************************************************/
676	#ifdef VBOX_WITH_DEBUGGER
677	/** Argument descriptors for '.pgmerror' and '.pgmerroroff'. */
678	static const DBGCVARDESC g_aPgmErrorArgs[] =
679	{
680	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
681	{ 0, 1, DBGCVAR_CAT_STRING, 0, "where", "Error injection location." },
682	};
683
684	static const DBGCVARDESC g_aPgmPhysToFileArgs[] =
685	{
686	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
687	{ 1, 1, DBGCVAR_CAT_STRING, 0, "file", "The file name." },
688	{ 0, 1, DBGCVAR_CAT_STRING, 0, "nozero", "If present, zero pages are skipped." },
689	};
690
691	# ifdef DEBUG_sandervl
692	static const DBGCVARDESC g_aPgmCountPhysWritesArgs[] =
693	{
694	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
695	{ 1, 1, DBGCVAR_CAT_STRING, 0, "enabled", "on/off." },
696	{ 1, 1, DBGCVAR_CAT_NUMBER_NO_RANGE, 0, "interval", "Interval in ms." },
697	};
698	# endif
699
700	/** Command descriptors. */
701	static const DBGCCMD g_aCmds[] =
702	{
703	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
704	{ "pgmsync", 0, 0, NULL, 0, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
705	{ "pgmerror", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Enables inject runtime of errors into parts of PGM." },
706	{ "pgmerroroff", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Disables inject runtime errors into parts of PGM." },
707	# ifdef VBOX_STRICT
708	{ "pgmassertcr3", 0, 0, NULL, 0, 0, pgmR3CmdAssertCR3, "", "Check the shadow CR3 mapping." },
709	# ifdef VBOX_WITH_PAGE_SHARING
710	{ "pgmcheckduppages", 0, 0, NULL, 0, 0, pgmR3CmdCheckDuplicatePages, "", "Check for duplicate pages in all running VMs." },
711	{ "pgmsharedmodules", 0, 0, NULL, 0, 0, pgmR3CmdShowSharedModules, "", "Print shared modules info." },
712	# endif
713	# endif
714	{ "pgmsyncalways", 0, 0, NULL, 0, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
715	{ "pgmphystofile", 1, 2, &g_aPgmPhysToFileArgs[0], 2, 0, pgmR3CmdPhysToFile, "", "Save the physical memory to file." },
716	};
717	#endif
718
719
720
721
722	/*
723	* Shadow - 32-bit mode
724	*/
725	#define PGM_SHW_TYPE PGM_TYPE_32BIT
726	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
727	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_32BIT_STR(name)
728	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_32BIT_STR(name)
729	#include "PGMShw.h"
730
731	/* Guest - real mode */
732	#define PGM_GST_TYPE PGM_TYPE_REAL
733	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
734	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
735	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
736	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
737	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_REAL_STR(name)
738	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_REAL_STR(name)
739	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
740	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
741	#include "PGMBth.h"
742	#include "PGMGstDefs.h"
743	#include "PGMGst.h"
744	#undef BTH_PGMPOOLKIND_PT_FOR_PT
745	#undef BTH_PGMPOOLKIND_ROOT
746	#undef PGM_BTH_NAME
747	#undef PGM_BTH_NAME_RC_STR
748	#undef PGM_BTH_NAME_R0_STR
749	#undef PGM_GST_TYPE
750	#undef PGM_GST_NAME
751	#undef PGM_GST_NAME_RC_STR
752	#undef PGM_GST_NAME_R0_STR
753
754	/* Guest - protected mode */
755	#define PGM_GST_TYPE PGM_TYPE_PROT
756	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
757	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
758	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
759	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
760	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_PROT_STR(name)
761	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_PROT_STR(name)
762	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
763	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
764	#include "PGMBth.h"
765	#include "PGMGstDefs.h"
766	#include "PGMGst.h"
767	#undef BTH_PGMPOOLKIND_PT_FOR_PT
768	#undef BTH_PGMPOOLKIND_ROOT
769	#undef PGM_BTH_NAME
770	#undef PGM_BTH_NAME_RC_STR
771	#undef PGM_BTH_NAME_R0_STR
772	#undef PGM_GST_TYPE
773	#undef PGM_GST_NAME
774	#undef PGM_GST_NAME_RC_STR
775	#undef PGM_GST_NAME_R0_STR
776
777	/* Guest - 32-bit mode */
778	#define PGM_GST_TYPE PGM_TYPE_32BIT
779	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
780	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
781	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
782	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
783	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_32BIT_STR(name)
784	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_32BIT_STR(name)
785	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
786	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
787	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD
788	#include "PGMBth.h"
789	#include "PGMGstDefs.h"
790	#include "PGMGst.h"
791	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
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	#undef PGM_SHW_TYPE
803	#undef PGM_SHW_NAME
804	#undef PGM_SHW_NAME_RC_STR
805	#undef PGM_SHW_NAME_R0_STR
806
807
808	/*
809	* Shadow - PAE mode
810	*/
811	#define PGM_SHW_TYPE PGM_TYPE_PAE
812	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
813	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_PAE_STR(name)
814	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_PAE_STR(name)
815	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
816	#include "PGMShw.h"
817
818	/* Guest - real mode */
819	#define PGM_GST_TYPE PGM_TYPE_REAL
820	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
821	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
822	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
823	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
824	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_REAL_STR(name)
825	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_REAL_STR(name)
826	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
827	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
828	#include "PGMGstDefs.h"
829	#include "PGMBth.h"
830	#undef BTH_PGMPOOLKIND_PT_FOR_PT
831	#undef BTH_PGMPOOLKIND_ROOT
832	#undef PGM_BTH_NAME
833	#undef PGM_BTH_NAME_RC_STR
834	#undef PGM_BTH_NAME_R0_STR
835	#undef PGM_GST_TYPE
836	#undef PGM_GST_NAME
837	#undef PGM_GST_NAME_RC_STR
838	#undef PGM_GST_NAME_R0_STR
839
840	/* Guest - protected mode */
841	#define PGM_GST_TYPE PGM_TYPE_PROT
842	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
843	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
844	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
845	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
846	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PROT_STR(name)
847	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PROT_STR(name)
848	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
849	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
850	#include "PGMGstDefs.h"
851	#include "PGMBth.h"
852	#undef BTH_PGMPOOLKIND_PT_FOR_PT
853	#undef BTH_PGMPOOLKIND_ROOT
854	#undef PGM_BTH_NAME
855	#undef PGM_BTH_NAME_RC_STR
856	#undef PGM_BTH_NAME_R0_STR
857	#undef PGM_GST_TYPE
858	#undef PGM_GST_NAME
859	#undef PGM_GST_NAME_RC_STR
860	#undef PGM_GST_NAME_R0_STR
861
862	/* Guest - 32-bit mode */
863	#define PGM_GST_TYPE PGM_TYPE_32BIT
864	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
865	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
866	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
867	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
868	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_32BIT_STR(name)
869	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_32BIT_STR(name)
870	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
871	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
872	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_FOR_32BIT
873	#include "PGMGstDefs.h"
874	#include "PGMBth.h"
875	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
876	#undef BTH_PGMPOOLKIND_PT_FOR_PT
877	#undef BTH_PGMPOOLKIND_ROOT
878	#undef PGM_BTH_NAME
879	#undef PGM_BTH_NAME_RC_STR
880	#undef PGM_BTH_NAME_R0_STR
881	#undef PGM_GST_TYPE
882	#undef PGM_GST_NAME
883	#undef PGM_GST_NAME_RC_STR
884	#undef PGM_GST_NAME_R0_STR
885
886	/* Guest - PAE mode */
887	#define PGM_GST_TYPE PGM_TYPE_PAE
888	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
889	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
890	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
891	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
892	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PAE_STR(name)
893	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PAE_STR(name)
894	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
895	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
896	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT
897	#include "PGMBth.h"
898	#include "PGMGstDefs.h"
899	#include "PGMGst.h"
900	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
901	#undef BTH_PGMPOOLKIND_PT_FOR_PT
902	#undef BTH_PGMPOOLKIND_ROOT
903	#undef PGM_BTH_NAME
904	#undef PGM_BTH_NAME_RC_STR
905	#undef PGM_BTH_NAME_R0_STR
906	#undef PGM_GST_TYPE
907	#undef PGM_GST_NAME
908	#undef PGM_GST_NAME_RC_STR
909	#undef PGM_GST_NAME_R0_STR
910
911	#undef PGM_SHW_TYPE
912	#undef PGM_SHW_NAME
913	#undef PGM_SHW_NAME_RC_STR
914	#undef PGM_SHW_NAME_R0_STR
915
916
917	/*
918	* Shadow - AMD64 mode
919	*/
920	#define PGM_SHW_TYPE PGM_TYPE_AMD64
921	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
922	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_AMD64_STR(name)
923	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_AMD64_STR(name)
924	#include "PGMShw.h"
925
926	#ifdef VBOX_WITH_64_BITS_GUESTS
927	/* Guest - AMD64 mode */
928	# define PGM_GST_TYPE PGM_TYPE_AMD64
929	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
930	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
931	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
932	# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
933	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_AMD64_AMD64_STR(name)
934	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_AMD64_AMD64_STR(name)
935	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
936	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
937	# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_64BIT_PML4
938	# include "PGMBth.h"
939	# include "PGMGstDefs.h"
940	# include "PGMGst.h"
941	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
942	# undef BTH_PGMPOOLKIND_PT_FOR_PT
943	# undef BTH_PGMPOOLKIND_ROOT
944	# undef PGM_BTH_NAME
945	# undef PGM_BTH_NAME_RC_STR
946	# undef PGM_BTH_NAME_R0_STR
947	# undef PGM_GST_TYPE
948	# undef PGM_GST_NAME
949	# undef PGM_GST_NAME_RC_STR
950	# undef PGM_GST_NAME_R0_STR
951	#endif /* VBOX_WITH_64_BITS_GUESTS */
952
953	#undef PGM_SHW_TYPE
954	#undef PGM_SHW_NAME
955	#undef PGM_SHW_NAME_RC_STR
956	#undef PGM_SHW_NAME_R0_STR
957
958
959	/*
960	* Shadow - Nested paging mode
961	*/
962	#define PGM_SHW_TYPE PGM_TYPE_NESTED
963	#define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
964	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_NESTED_STR(name)
965	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_NESTED_STR(name)
966	#include "PGMShw.h"
967
968	/* Guest - real mode */
969	#define PGM_GST_TYPE PGM_TYPE_REAL
970	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
971	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
972	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
973	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
974	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_REAL_STR(name)
975	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_REAL_STR(name)
976	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
977	#include "PGMGstDefs.h"
978	#include "PGMBth.h"
979	#undef BTH_PGMPOOLKIND_PT_FOR_PT
980	#undef PGM_BTH_NAME
981	#undef PGM_BTH_NAME_RC_STR
982	#undef PGM_BTH_NAME_R0_STR
983	#undef PGM_GST_TYPE
984	#undef PGM_GST_NAME
985	#undef PGM_GST_NAME_RC_STR
986	#undef PGM_GST_NAME_R0_STR
987
988	/* Guest - protected mode */
989	#define PGM_GST_TYPE PGM_TYPE_PROT
990	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
991	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
992	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
993	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
994	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PROT_STR(name)
995	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PROT_STR(name)
996	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
997	#include "PGMGstDefs.h"
998	#include "PGMBth.h"
999	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1000	#undef PGM_BTH_NAME
1001	#undef PGM_BTH_NAME_RC_STR
1002	#undef PGM_BTH_NAME_R0_STR
1003	#undef PGM_GST_TYPE
1004	#undef PGM_GST_NAME
1005	#undef PGM_GST_NAME_RC_STR
1006	#undef PGM_GST_NAME_R0_STR
1007
1008	/* Guest - 32-bit mode */
1009	#define PGM_GST_TYPE PGM_TYPE_32BIT
1010	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1011	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1012	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1013	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
1014	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_32BIT_STR(name)
1015	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_32BIT_STR(name)
1016	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1017	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1018	#include "PGMGstDefs.h"
1019	#include "PGMBth.h"
1020	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1021	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1022	#undef PGM_BTH_NAME
1023	#undef PGM_BTH_NAME_RC_STR
1024	#undef PGM_BTH_NAME_R0_STR
1025	#undef PGM_GST_TYPE
1026	#undef PGM_GST_NAME
1027	#undef PGM_GST_NAME_RC_STR
1028	#undef PGM_GST_NAME_R0_STR
1029
1030	/* Guest - PAE mode */
1031	#define PGM_GST_TYPE PGM_TYPE_PAE
1032	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1033	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1034	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1035	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
1036	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PAE_STR(name)
1037	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PAE_STR(name)
1038	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1039	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1040	#include "PGMGstDefs.h"
1041	#include "PGMBth.h"
1042	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1043	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1044	#undef PGM_BTH_NAME
1045	#undef PGM_BTH_NAME_RC_STR
1046	#undef PGM_BTH_NAME_R0_STR
1047	#undef PGM_GST_TYPE
1048	#undef PGM_GST_NAME
1049	#undef PGM_GST_NAME_RC_STR
1050	#undef PGM_GST_NAME_R0_STR
1051
1052	#ifdef VBOX_WITH_64_BITS_GUESTS
1053	/* Guest - AMD64 mode */
1054	# define PGM_GST_TYPE PGM_TYPE_AMD64
1055	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1056	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1057	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1058	# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
1059	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_AMD64_STR(name)
1060	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_AMD64_STR(name)
1061	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1062	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1063	# include "PGMGstDefs.h"
1064	# include "PGMBth.h"
1065	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1066	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1067	# undef PGM_BTH_NAME
1068	# undef PGM_BTH_NAME_RC_STR
1069	# undef PGM_BTH_NAME_R0_STR
1070	# undef PGM_GST_TYPE
1071	# undef PGM_GST_NAME
1072	# undef PGM_GST_NAME_RC_STR
1073	# undef PGM_GST_NAME_R0_STR
1074	#endif /* VBOX_WITH_64_BITS_GUESTS */
1075
1076	#undef PGM_SHW_TYPE
1077	#undef PGM_SHW_NAME
1078	#undef PGM_SHW_NAME_RC_STR
1079	#undef PGM_SHW_NAME_R0_STR
1080
1081
1082	/*
1083	* Shadow - EPT
1084	*/
1085	#define PGM_SHW_TYPE PGM_TYPE_EPT
1086	#define PGM_SHW_NAME(name) PGM_SHW_NAME_EPT(name)
1087	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_EPT_STR(name)
1088	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_EPT_STR(name)
1089	#include "PGMShw.h"
1090
1091	/* Guest - real mode */
1092	#define PGM_GST_TYPE PGM_TYPE_REAL
1093	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
1094	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
1095	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
1096	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_REAL(name)
1097	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_REAL_STR(name)
1098	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_REAL_STR(name)
1099	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1100	#include "PGMGstDefs.h"
1101	#include "PGMBth.h"
1102	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1103	#undef PGM_BTH_NAME
1104	#undef PGM_BTH_NAME_RC_STR
1105	#undef PGM_BTH_NAME_R0_STR
1106	#undef PGM_GST_TYPE
1107	#undef PGM_GST_NAME
1108	#undef PGM_GST_NAME_RC_STR
1109	#undef PGM_GST_NAME_R0_STR
1110
1111	/* Guest - protected mode */
1112	#define PGM_GST_TYPE PGM_TYPE_PROT
1113	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
1114	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
1115	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
1116	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PROT(name)
1117	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PROT_STR(name)
1118	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PROT_STR(name)
1119	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1120	#include "PGMGstDefs.h"
1121	#include "PGMBth.h"
1122	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1123	#undef PGM_BTH_NAME
1124	#undef PGM_BTH_NAME_RC_STR
1125	#undef PGM_BTH_NAME_R0_STR
1126	#undef PGM_GST_TYPE
1127	#undef PGM_GST_NAME
1128	#undef PGM_GST_NAME_RC_STR
1129	#undef PGM_GST_NAME_R0_STR
1130
1131	/* Guest - 32-bit mode */
1132	#define PGM_GST_TYPE PGM_TYPE_32BIT
1133	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1134	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1135	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1136	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_32BIT(name)
1137	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_32BIT_STR(name)
1138	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_32BIT_STR(name)
1139	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1140	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1141	#include "PGMGstDefs.h"
1142	#include "PGMBth.h"
1143	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1144	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1145	#undef PGM_BTH_NAME
1146	#undef PGM_BTH_NAME_RC_STR
1147	#undef PGM_BTH_NAME_R0_STR
1148	#undef PGM_GST_TYPE
1149	#undef PGM_GST_NAME
1150	#undef PGM_GST_NAME_RC_STR
1151	#undef PGM_GST_NAME_R0_STR
1152
1153	/* Guest - PAE mode */
1154	#define PGM_GST_TYPE PGM_TYPE_PAE
1155	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1156	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1157	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1158	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PAE(name)
1159	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PAE_STR(name)
1160	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PAE_STR(name)
1161	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1162	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1163	#include "PGMGstDefs.h"
1164	#include "PGMBth.h"
1165	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1166	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1167	#undef PGM_BTH_NAME
1168	#undef PGM_BTH_NAME_RC_STR
1169	#undef PGM_BTH_NAME_R0_STR
1170	#undef PGM_GST_TYPE
1171	#undef PGM_GST_NAME
1172	#undef PGM_GST_NAME_RC_STR
1173	#undef PGM_GST_NAME_R0_STR
1174
1175	#ifdef VBOX_WITH_64_BITS_GUESTS
1176	/* Guest - AMD64 mode */
1177	# define PGM_GST_TYPE PGM_TYPE_AMD64
1178	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1179	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1180	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1181	# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_AMD64(name)
1182	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_AMD64_STR(name)
1183	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_AMD64_STR(name)
1184	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1185	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1186	# include "PGMGstDefs.h"
1187	# include "PGMBth.h"
1188	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1189	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1190	# undef PGM_BTH_NAME
1191	# undef PGM_BTH_NAME_RC_STR
1192	# undef PGM_BTH_NAME_R0_STR
1193	# undef PGM_GST_TYPE
1194	# undef PGM_GST_NAME
1195	# undef PGM_GST_NAME_RC_STR
1196	# undef PGM_GST_NAME_R0_STR
1197	#endif /* VBOX_WITH_64_BITS_GUESTS */
1198
1199	#undef PGM_SHW_TYPE
1200	#undef PGM_SHW_NAME
1201	#undef PGM_SHW_NAME_RC_STR
1202	#undef PGM_SHW_NAME_R0_STR
1203
1204
1205
1206	/**
1207	* Initiates the paging of VM.
1208	*
1209	* @returns VBox status code.
1210	* @param pVM Pointer to VM structure.
1211	*/
1212	VMMR3DECL(int) PGMR3Init(PVM pVM)
1213	{
1214	LogFlow(("PGMR3Init:\n"));
1215	PCFGMNODE pCfgPGM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM");
1216	int rc;
1217
1218	/*
1219	* Assert alignment and sizes.
1220	*/
1221	AssertCompile(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
1222	AssertCompile(sizeof(pVM->aCpus[0].pgm.s) <= sizeof(pVM->aCpus[0].pgm.padding));
1223	AssertCompileMemberAlignment(PGM, CritSectX, sizeof(uintptr_t));
1224
1225	/*
1226	* Init the structure.
1227	*/
1228	#ifdef PGM_WITHOUT_MAPPINGS
1229	pVM->pgm.s.fMappingsDisabled = true;
1230	#endif
1231	pVM->pgm.s.offVM = RT_OFFSETOF(VM, pgm.s);
1232	pVM->pgm.s.offVCpuPGM = RT_OFFSETOF(VMCPU, pgm.s);
1233
1234	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aHandyPages); i++)
1235	{
1236	pVM->pgm.s.aHandyPages[i].HCPhysGCPhys = NIL_RTHCPHYS;
1237	pVM->pgm.s.aHandyPages[i].idPage = NIL_GMM_PAGEID;
1238	pVM->pgm.s.aHandyPages[i].idSharedPage = NIL_GMM_PAGEID;
1239	}
1240
1241	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aLargeHandyPage); i++)
1242	{
1243	pVM->pgm.s.aLargeHandyPage[i].HCPhysGCPhys = NIL_RTHCPHYS;
1244	pVM->pgm.s.aLargeHandyPage[i].idPage = NIL_GMM_PAGEID;
1245	pVM->pgm.s.aLargeHandyPage[i].idSharedPage = NIL_GMM_PAGEID;
1246	}
1247
1248	/* Init the per-CPU part. */
1249	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1250	{
1251	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1252	PPGMCPU pPGM = &pVCpu->pgm.s;
1253
1254	pPGM->offVM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)pVM;
1255	pPGM->offVCpu = RT_OFFSETOF(VMCPU, pgm.s);
1256	pPGM->offPGM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)&pVM->pgm.s;
1257
1258	pPGM->enmShadowMode = PGMMODE_INVALID;
1259	pPGM->enmGuestMode = PGMMODE_INVALID;
1260
1261	pPGM->GCPhysCR3 = NIL_RTGCPHYS;
1262
1263	pPGM->pGst32BitPdR3 = NULL;
1264	pPGM->pGstPaePdptR3 = NULL;
1265	pPGM->pGstAmd64Pml4R3 = NULL;
1266	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1267	pPGM->pGst32BitPdR0 = NIL_RTR0PTR;
1268	pPGM->pGstPaePdptR0 = NIL_RTR0PTR;
1269	pPGM->pGstAmd64Pml4R0 = NIL_RTR0PTR;
1270	#endif
1271	pPGM->pGst32BitPdRC = NIL_RTRCPTR;
1272	pPGM->pGstPaePdptRC = NIL_RTRCPTR;
1273	for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsR3); i++)
1274	{
1275	pPGM->apGstPaePDsR3[i] = NULL;
1276	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1277	pPGM->apGstPaePDsR0[i] = NIL_RTR0PTR;
1278	#endif
1279	pPGM->apGstPaePDsRC[i] = NIL_RTRCPTR;
1280	pPGM->aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
1281	pPGM->aGstPaePdpeRegs[i].u = UINT64_MAX;
1282	pPGM->aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
1283	}
1284
1285	pPGM->fA20Enabled = true;
1286	pPGM->GCPhysA20Mask = ~((RTGCPHYS)!pPGM->fA20Enabled << 20);
1287	}
1288
1289	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1290	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1; /* default; checked later */
1291	pVM->pgm.s.GCPtrPrevRamRangeMapping = MM_HYPER_AREA_ADDRESS;
1292
1293	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "RamPreAlloc", &pVM->pgm.s.fRamPreAlloc,
1294	#ifdef VBOX_WITH_PREALLOC_RAM_BY_DEFAULT
1295	true
1296	#else
1297	false
1298	#endif
1299	);
1300	AssertLogRelRCReturn(rc, rc);
1301
1302	#if HC_ARCH_BITS == 32
1303	# ifdef RT_OS_DARWIN
1304	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE * 3);
1305	# else
1306	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE);
1307	# endif
1308	#else
1309	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, UINT32_MAX);
1310	#endif
1311	AssertLogRelRCReturn(rc, rc);
1312	for (uint32_t i = 0; i < RT_ELEMENTS(pVM->pgm.s.ChunkR3Map.Tlb.aEntries); i++)
1313	pVM->pgm.s.ChunkR3Map.Tlb.aEntries[i].idChunk = NIL_GMM_CHUNKID;
1314
1315	/*
1316	* Get the configured RAM size - to estimate saved state size.
1317	*/
1318	uint64_t cbRam;
1319	rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
1320	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1321	cbRam = 0;
1322	else if (RT_SUCCESS(rc))
1323	{
1324	if (cbRam < PAGE_SIZE)
1325	cbRam = 0;
1326	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
1327	}
1328	else
1329	{
1330	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc));
1331	return rc;
1332	}
1333
1334	/*
1335	* Check for PCI pass-through.
1336	*/
1337	rc = CFGMR3QueryBoolDef(pCfgPGM, "PciPassThrough", &pVM->pgm.s.fPciPassthrough, false);
1338	AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"PciPassThrough\", rc=%Rrc.\n", rc), rc);
1339	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough \|\| pVM->pgm.s.fRamPreAlloc, VERR_INVALID_PARAMETER);
1340
1341	#ifdef VBOX_WITH_STATISTICS
1342	/*
1343	* Allocate memory for the statistics before someone tries to use them.
1344	*/
1345	size_t cbTotalStats = RT_ALIGN_Z(sizeof(PGMSTATS), 64) + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64) * pVM->cCpus;
1346	void *pv;
1347	rc = MMHyperAlloc(pVM, RT_ALIGN_Z(cbTotalStats, PAGE_SIZE), PAGE_SIZE, MM_TAG_PGM, &pv);
1348	AssertRCReturn(rc, rc);
1349
1350	pVM->pgm.s.pStatsR3 = (PGMSTATS *)pv;
1351	pVM->pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1352	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1353	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMSTATS), 64);
1354
1355	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
1356	{
1357	pVM->aCpus[iCpu].pgm.s.pStatsR3 = (PGMCPUSTATS *)pv;
1358	pVM->aCpus[iCpu].pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1359	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1360
1361	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64);
1362	}
1363	#endif /* VBOX_WITH_STATISTICS */
1364
1365	/*
1366	* Register callbacks, string formatters and the saved state data unit.
1367	*/
1368	#ifdef VBOX_STRICT
1369	VMR3AtStateRegister(pVM->pUVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
1370	#endif
1371	PGMRegisterStringFormatTypes();
1372
1373	rc = pgmR3InitSavedState(pVM, cbRam);
1374	if (RT_FAILURE(rc))
1375	return rc;
1376
1377	/*
1378	* Initialize the PGM critical section and flush the phys TLBs
1379	*/
1380	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSectX, RT_SRC_POS, "PGM");
1381	AssertRCReturn(rc, rc);
1382
1383	PGMR3PhysChunkInvalidateTLB(pVM);
1384	pgmPhysInvalidatePageMapTLB(pVM);
1385
1386	/*
1387	* For the time being we sport a full set of handy pages in addition to the base
1388	* memory to simplify things.
1389	*/
1390	rc = MMR3ReserveHandyPages(pVM, RT_ELEMENTS(pVM->pgm.s.aHandyPages)); /** @todo this should be changed to PGM_HANDY_PAGES_MIN but this needs proper testing... */
1391	AssertRCReturn(rc, rc);
1392
1393	/*
1394	* Trees
1395	*/
1396	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesR3);
1397	if (RT_SUCCESS(rc))
1398	{
1399	pVM->pgm.s.pTreesR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pTreesR3);
1400	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
1401
1402	/*
1403	* Allocate the zero page.
1404	*/
1405	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
1406	}
1407	if (RT_SUCCESS(rc))
1408	{
1409	pVM->pgm.s.pvZeroPgRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pvZeroPgR3);
1410	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1411	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
1412	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
1413
1414	/*
1415	* Allocate the invalid MMIO page.
1416	* (The invalid bits in HCPhysInvMmioPg are set later on init complete.)
1417	*/
1418	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvMmioPgR3);
1419	}
1420	if (RT_SUCCESS(rc))
1421	{
1422	ASMMemFill32(pVM->pgm.s.pvMmioPgR3, PAGE_SIZE, 0xfeedface);
1423	pVM->pgm.s.HCPhysMmioPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvMmioPgR3);
1424	AssertRelease(pVM->pgm.s.HCPhysMmioPg != NIL_RTHCPHYS);
1425	pVM->pgm.s.HCPhysInvMmioPg = pVM->pgm.s.HCPhysMmioPg;
1426
1427	/*
1428	* Init the paging.
1429	*/
1430	rc = pgmR3InitPaging(pVM);
1431	}
1432	if (RT_SUCCESS(rc))
1433	{
1434	/*
1435	* Init the page pool.
1436	*/
1437	rc = pgmR3PoolInit(pVM);
1438	}
1439	if (RT_SUCCESS(rc))
1440	{
1441	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1442	{
1443	PVMCPU pVCpu = &pVM->aCpus[i];
1444	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
1445	if (RT_FAILURE(rc))
1446	break;
1447	}
1448	}
1449
1450	if (RT_SUCCESS(rc))
1451	{
1452	/*
1453	* Info & statistics
1454	*/
1455	DBGFR3InfoRegisterInternal(pVM, "mode",
1456	"Shows the current paging mode. "
1457	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing is given.",
1458	pgmR3InfoMode);
1459	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
1460	"Dumps all the entries in the top level paging table. No arguments.",
1461	pgmR3InfoCr3);
1462	DBGFR3InfoRegisterInternal(pVM, "phys",
1463	"Dumps all the physical address ranges. No arguments.",
1464	pgmR3PhysInfo);
1465	DBGFR3InfoRegisterInternal(pVM, "handlers",
1466	"Dumps physical, virtual and hyper virtual handlers. "
1467	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
1468	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
1469	pgmR3InfoHandlers);
1470	DBGFR3InfoRegisterInternal(pVM, "mappings",
1471	"Dumps guest mappings.",
1472	pgmR3MapInfo);
1473
1474	pgmR3InitStats(pVM);
1475
1476	#ifdef VBOX_WITH_DEBUGGER
1477	/*
1478	* Debugger commands.
1479	*/
1480	static bool s_fRegisteredCmds = false;
1481	if (!s_fRegisteredCmds)
1482	{
1483	int rc2 = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
1484	if (RT_SUCCESS(rc2))
1485	s_fRegisteredCmds = true;
1486	}
1487	#endif
1488	return VINF_SUCCESS;
1489	}
1490
1491	/* Almost no cleanup necessary, MM frees all memory. */
1492	PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
1493
1494	return rc;
1495	}
1496
1497
1498	/**
1499	* Init paging.
1500	*
1501	* Since we need to check what mode the host is operating in before we can choose
1502	* the right paging functions for the host we have to delay this until R0 has
1503	* been initialized.
1504	*
1505	* @returns VBox status code.
1506	* @param pVM Pointer to the VM.
1507	*/
1508	static int pgmR3InitPaging(PVM pVM)
1509	{
1510	/*
1511	* Force a recalculation of modes and switcher so everyone gets notified.
1512	*/
1513	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1514	{
1515	PVMCPU pVCpu = &pVM->aCpus[i];
1516
1517	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
1518	pVCpu->pgm.s.enmGuestMode = PGMMODE_INVALID;
1519	}
1520
1521	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1522
1523	/*
1524	* Allocate static mapping space for whatever the cr3 register
1525	* points to and in the case of PAE mode to the 4 PDs.
1526	*/
1527	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * 5, "CR3 mapping", &pVM->pgm.s.GCPtrCR3Mapping);
1528	if (RT_FAILURE(rc))
1529	{
1530	AssertMsgFailed(("Failed to reserve two pages for cr mapping in HMA, rc=%Rrc\n", rc));
1531	return rc;
1532	}
1533	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1534
1535	/*
1536	* Allocate pages for the three possible intermediate contexts
1537	* (AMD64, PAE and plain 32-Bit). We maintain all three contexts
1538	* for the sake of simplicity. The AMD64 uses the PAE for the
1539	* lower levels, making the total number of pages 11 (3 + 7 + 1).
1540	*
1541	* We assume that two page tables will be enought for the core code
1542	* mappings (HC virtual and identity).
1543	*/
1544	pVM->pgm.s.pInterPD = (PX86PD)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPD, VERR_NO_PAGE_MEMORY);
1545	pVM->pgm.s.apInterPTs[0] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[0], VERR_NO_PAGE_MEMORY);
1546	pVM->pgm.s.apInterPTs[1] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[1], VERR_NO_PAGE_MEMORY);
1547	pVM->pgm.s.apInterPaePTs[0] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[0], VERR_NO_PAGE_MEMORY);
1548	pVM->pgm.s.apInterPaePTs[1] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[1], VERR_NO_PAGE_MEMORY);
1549	pVM->pgm.s.apInterPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[0], VERR_NO_PAGE_MEMORY);
1550	pVM->pgm.s.apInterPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[1], VERR_NO_PAGE_MEMORY);
1551	pVM->pgm.s.apInterPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[2], VERR_NO_PAGE_MEMORY);
1552	pVM->pgm.s.apInterPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[3], VERR_NO_PAGE_MEMORY);
1553	pVM->pgm.s.pInterPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT, VERR_NO_PAGE_MEMORY);
1554	pVM->pgm.s.pInterPaePDPT64 = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT64, VERR_NO_PAGE_MEMORY);
1555	pVM->pgm.s.pInterPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePML4, VERR_NO_PAGE_MEMORY);
1556
1557	pVM->pgm.s.HCPhysInterPD = MMPage2Phys(pVM, pVM->pgm.s.pInterPD);
1558	AssertRelease(pVM->pgm.s.HCPhysInterPD != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPD & PAGE_OFFSET_MASK));
1559	pVM->pgm.s.HCPhysInterPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT);
1560	AssertRelease(pVM->pgm.s.HCPhysInterPaePDPT != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePDPT & PAGE_OFFSET_MASK));
1561	pVM->pgm.s.HCPhysInterPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePML4);
1562	AssertRelease(pVM->pgm.s.HCPhysInterPaePML4 != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePML4 & PAGE_OFFSET_MASK) && pVM->pgm.s.HCPhysInterPaePML4 < 0xffffffff);
1563
1564	/*
1565	* Initialize the pages, setting up the PML4 and PDPT for repetitive 4GB action.
1566	*/
1567	ASMMemZeroPage(pVM->pgm.s.pInterPD);
1568	ASMMemZeroPage(pVM->pgm.s.apInterPTs[0]);
1569	ASMMemZeroPage(pVM->pgm.s.apInterPTs[1]);
1570
1571	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[0]);
1572	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[1]);
1573
1574	ASMMemZeroPage(pVM->pgm.s.pInterPaePDPT);
1575	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.apInterPaePDs); i++)
1576	{
1577	ASMMemZeroPage(pVM->pgm.s.apInterPaePDs[i]);
1578	pVM->pgm.s.pInterPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT
1579	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[i]);
1580	}
1581
1582	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePDPT64->a); i++)
1583	{
1584	const unsigned iPD = i % RT_ELEMENTS(pVM->pgm.s.apInterPaePDs);
1585	pVM->pgm.s.pInterPaePDPT64->a[i].u = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A \| PGM_PLXFLAGS_PERMANENT
1586	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[iPD]);
1587	}
1588
1589	RTHCPHYS HCPhysInterPaePDPT64 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64);
1590	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePML4->a); i++)
1591	pVM->pgm.s.pInterPaePML4->a[i].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A \| PGM_PLXFLAGS_PERMANENT
1592	\| HCPhysInterPaePDPT64;
1593
1594	/*
1595	* Initialize paging workers and mode from current host mode
1596	* and the guest running in real mode.
1597	*/
1598	pVM->pgm.s.enmHostMode = SUPR3GetPagingMode();
1599	switch (pVM->pgm.s.enmHostMode)
1600	{
1601	case SUPPAGINGMODE_32_BIT:
1602	case SUPPAGINGMODE_32_BIT_GLOBAL:
1603	case SUPPAGINGMODE_PAE:
1604	case SUPPAGINGMODE_PAE_GLOBAL:
1605	case SUPPAGINGMODE_PAE_NX:
1606	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1607	break;
1608
1609	case SUPPAGINGMODE_AMD64:
1610	case SUPPAGINGMODE_AMD64_GLOBAL:
1611	case SUPPAGINGMODE_AMD64_NX:
1612	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1613	#ifndef VBOX_WITH_HYBRID_32BIT_KERNEL
1614	if (ARCH_BITS != 64)
1615	{
1616	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1617	LogRel(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1618	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1619	}
1620	#endif
1621	break;
1622	default:
1623	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1624	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1625	}
1626	rc = pgmR3ModeDataInit(pVM, false /* don't resolve GC and R0 syms yet */);
1627	if (RT_SUCCESS(rc))
1628	{
1629	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1630	#if HC_ARCH_BITS == 64
1631	LogRel(("Debug: HCPhysInterPD=%RHp HCPhysInterPaePDPT=%RHp HCPhysInterPaePML4=%RHp\n",
1632	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1633	LogRel(("Debug: apInterPTs={%RHp,%RHp} apInterPaePTs={%RHp,%RHp} apInterPaePDs={%RHp,%RHp,%RHp,%RHp} pInterPaePDPT64=%RHp\n",
1634	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1635	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1636	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]),
1637	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1638	#endif
1639
1640	/*
1641	* Log the host paging mode. It may come in handy.
1642	*/
1643	const char *pszHostMode;
1644	switch (pVM->pgm.s.enmHostMode)
1645	{
1646	case SUPPAGINGMODE_32_BIT: pszHostMode = "32-bit"; break;
1647	case SUPPAGINGMODE_32_BIT_GLOBAL: pszHostMode = "32-bit+PGE"; break;
1648	case SUPPAGINGMODE_PAE: pszHostMode = "PAE"; break;
1649	case SUPPAGINGMODE_PAE_GLOBAL: pszHostMode = "PAE+PGE"; break;
1650	case SUPPAGINGMODE_PAE_NX: pszHostMode = "PAE+NXE"; break;
1651	case SUPPAGINGMODE_PAE_GLOBAL_NX: pszHostMode = "PAE+PGE+NXE"; break;
1652	case SUPPAGINGMODE_AMD64: pszHostMode = "AMD64"; break;
1653	case SUPPAGINGMODE_AMD64_GLOBAL: pszHostMode = "AMD64+PGE"; break;
1654	case SUPPAGINGMODE_AMD64_NX: pszHostMode = "AMD64+NX"; break;
1655	case SUPPAGINGMODE_AMD64_GLOBAL_NX: pszHostMode = "AMD64+PGE+NX"; break;
1656	default: pszHostMode = "???"; break;
1657	}
1658	LogRel(("Host paging mode: %s\n", pszHostMode));
1659
1660	return VINF_SUCCESS;
1661	}
1662
1663	LogFlow(("pgmR3InitPaging: returns %Rrc\n", rc));
1664	return rc;
1665	}
1666
1667
1668	/**
1669	* Init statistics
1670	* @returns VBox status code.
1671	*/
1672	static int pgmR3InitStats(PVM pVM)
1673	{
1674	PPGM pPGM = &pVM->pgm.s;
1675	int rc;
1676
1677	/*
1678	* Release statistics.
1679	*/
1680	/* Common - misc variables */
1681	STAM_REL_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_COUNT, "The total number of pages.");
1682	STAM_REL_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_COUNT, "The number of private pages.");
1683	STAM_REL_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_COUNT, "The number of shared pages.");
1684	STAM_REL_REG(pVM, &pPGM->cReusedSharedPages, STAMTYPE_U32, "/PGM/Page/cReusedSharedPages", STAMUNIT_COUNT, "The number of reused shared pages.");
1685	STAM_REL_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_COUNT, "The number of zero backed pages.");
1686	STAM_REL_REG(pVM, &pPGM->cPureMmioPages, STAMTYPE_U32, "/PGM/Page/cPureMmioPages", STAMUNIT_COUNT, "The number of pure MMIO pages.");
1687	STAM_REL_REG(pVM, &pPGM->cMonitoredPages, STAMTYPE_U32, "/PGM/Page/cMonitoredPages", STAMUNIT_COUNT, "The number of write monitored pages.");
1688	STAM_REL_REG(pVM, &pPGM->cWrittenToPages, STAMTYPE_U32, "/PGM/Page/cWrittenToPages", STAMUNIT_COUNT, "The number of previously write monitored pages that have been written to.");
1689	STAM_REL_REG(pVM, &pPGM->cWriteLockedPages, STAMTYPE_U32, "/PGM/Page/cWriteLockedPages", STAMUNIT_COUNT, "The number of write(/read) locked pages.");
1690	STAM_REL_REG(pVM, &pPGM->cReadLockedPages, STAMTYPE_U32, "/PGM/Page/cReadLockedPages", STAMUNIT_COUNT, "The number of read (only) locked pages.");
1691	STAM_REL_REG(pVM, &pPGM->cBalloonedPages, STAMTYPE_U32, "/PGM/Page/cBalloonedPages", STAMUNIT_COUNT, "The number of ballooned pages.");
1692	STAM_REL_REG(pVM, &pPGM->cHandyPages, STAMTYPE_U32, "/PGM/Page/cHandyPages", STAMUNIT_COUNT, "The number of handy pages (not included in cAllPages).");
1693	STAM_REL_REG(pVM, &pPGM->cLargePages, STAMTYPE_U32, "/PGM/Page/cLargePages", STAMUNIT_COUNT, "The number of large pages allocated (includes disabled).");
1694	STAM_REL_REG(pVM, &pPGM->cLargePagesDisabled, STAMTYPE_U32, "/PGM/Page/cLargePagesDisabled", STAMUNIT_COUNT, "The number of disabled large pages.");
1695	STAM_REL_REG(pVM, &pPGM->cRelocations, STAMTYPE_COUNTER, "/PGM/cRelocations", STAMUNIT_OCCURENCES,"Number of hypervisor relocations.");
1696	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_COUNT, "Number of mapped chunks.");
1697	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_COUNT, "Maximum number of mapped chunks.");
1698	STAM_REL_REG(pVM, &pPGM->cMappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Mapped", STAMUNIT_COUNT, "Number of times we mapped a chunk.");
1699	STAM_REL_REG(pVM, &pPGM->cUnmappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Unmapped", STAMUNIT_COUNT, "Number of times we unmapped a chunk.");
1700
1701	STAM_REL_REG(pVM, &pPGM->StatLargePageReused, STAMTYPE_COUNTER, "/PGM/LargePage/Reused", STAMUNIT_OCCURENCES, "The number of times we've reused a large page.");
1702	STAM_REL_REG(pVM, &pPGM->StatLargePageRefused, STAMTYPE_COUNTER, "/PGM/LargePage/Refused", STAMUNIT_OCCURENCES, "The number of times we couldn't use a large page.");
1703	STAM_REL_REG(pVM, &pPGM->StatLargePageRecheck, STAMTYPE_COUNTER, "/PGM/LargePage/Recheck", STAMUNIT_OCCURENCES, "The number of times we've rechecked a disabled large page.");
1704
1705	STAM_REL_REG(pVM, &pPGM->StatShModCheck, STAMTYPE_PROFILE, "/PGM/ShMod/Check", STAMUNIT_TICKS_PER_CALL, "Profiles the shared module checking.");
1706
1707	/* Live save */
1708	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.fActive, STAMTYPE_U8, "/PGM/LiveSave/fActive", STAMUNIT_COUNT, "Active or not.");
1709	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cIgnoredPages, STAMTYPE_U32, "/PGM/LiveSave/cIgnoredPages", STAMUNIT_COUNT, "The number of ignored pages in the RAM ranges (i.e. MMIO, MMIO2 and ROM).");
1710	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesLong, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesLong", STAMUNIT_COUNT, "Longer term dirty page average.");
1711	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesShort, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesShort", STAMUNIT_COUNT, "Short term dirty page average.");
1712	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cPagesPerSecond, STAMTYPE_U32, "/PGM/LiveSave/cPagesPerSecond", STAMUNIT_COUNT, "Pages per second.");
1713	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cSavedPages, STAMTYPE_U64, "/PGM/LiveSave/cSavedPages", STAMUNIT_COUNT, "The total number of saved pages.");
1714	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cReadPages", STAMUNIT_COUNT, "RAM: Ready pages.");
1715	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cDirtyPages", STAMUNIT_COUNT, "RAM: Dirty pages.");
1716	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cZeroPages", STAMUNIT_COUNT, "RAM: Ready zero pages.");
1717	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cMonitoredPages", STAMUNIT_COUNT, "RAM: Write monitored pages.");
1718	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cReadPages", STAMUNIT_COUNT, "ROM: Ready pages.");
1719	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cDirtyPages", STAMUNIT_COUNT, "ROM: Dirty pages.");
1720	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cZeroPages", STAMUNIT_COUNT, "ROM: Ready zero pages.");
1721	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cMonitoredPages", STAMUNIT_COUNT, "ROM: Write monitored pages.");
1722	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cReadPages", STAMUNIT_COUNT, "MMIO2: Ready pages.");
1723	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cDirtyPages", STAMUNIT_COUNT, "MMIO2: Dirty pages.");
1724	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cZeroPages", STAMUNIT_COUNT, "MMIO2: Ready zero pages.");
1725	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cMonitoredPages,STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cMonitoredPages",STAMUNIT_COUNT, "MMIO2: Write monitored pages.");
1726
1727	#ifdef VBOX_WITH_STATISTICS
1728
1729	# define PGM_REG_COUNTER(a, b, c) \
1730	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b); \
1731	AssertRC(rc);
1732
1733	# define PGM_REG_COUNTER_BYTES(a, b, c) \
1734	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, c, b); \
1735	AssertRC(rc);
1736
1737	# define PGM_REG_PROFILE(a, b, c) \
1738	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b); \
1739	AssertRC(rc);
1740
1741	PGMSTATS *pStats = pVM->pgm.s.pStatsR3;
1742
1743	PGM_REG_PROFILE(&pStats->StatAllocLargePage, "/PGM/LargePage/Prof/Alloc", "Time spent by the host OS for large page allocation.");
1744	PGM_REG_PROFILE(&pStats->StatClearLargePage, "/PGM/LargePage/Prof/Clear", "Time spent clearing the newly allocated large pages.");
1745	PGM_REG_COUNTER(&pStats->StatLargePageOverflow, "/PGM/LargePage/Overflow", "The number of times allocating a large page took too long.");
1746	PGM_REG_PROFILE(&pStats->StatR3IsValidLargePage, "/PGM/LargePage/Prof/R3/IsValid", "pgmPhysIsValidLargePage profiling - R3.");
1747	PGM_REG_PROFILE(&pStats->StatRZIsValidLargePage, "/PGM/LargePage/Prof/RZ/IsValid", "pgmPhysIsValidLargePage profiling - RZ.");
1748
1749	PGM_REG_COUNTER(&pStats->StatR3DetectedConflicts, "/PGM/R3/DetectedConflicts", "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1750	PGM_REG_PROFILE(&pStats->StatR3ResolveConflict, "/PGM/R3/ResolveConflict", "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1751	PGM_REG_COUNTER(&pStats->StatR3PhysRead, "/PGM/R3/Phys/Read", "The number of times PGMPhysRead was called.");
1752	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysReadBytes, "/PGM/R3/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1753	PGM_REG_COUNTER(&pStats->StatR3PhysWrite, "/PGM/R3/Phys/Write", "The number of times PGMPhysWrite was called.");
1754	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysWriteBytes, "/PGM/R3/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1755	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleRead, "/PGM/R3/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1756	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleReadBytes, "/PGM/R3/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1757	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleWrite, "/PGM/R3/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1758	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleWriteBytes, "/PGM/R3/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1759
1760	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsRZ", "TLB hits.");
1761	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesRZ", "TLB misses.");
1762	PGM_REG_PROFILE(&pStats->StatChunkAging, "/PGM/ChunkR3Map/Map/Aging", "Chunk aging profiling.");
1763	PGM_REG_PROFILE(&pStats->StatChunkFindCandidate, "/PGM/ChunkR3Map/Map/Find", "Chunk unmap find profiling.");
1764	PGM_REG_PROFILE(&pStats->StatChunkUnmap, "/PGM/ChunkR3Map/Map/Unmap", "Chunk unmap of address space profiling.");
1765	PGM_REG_PROFILE(&pStats->StatChunkMap, "/PGM/ChunkR3Map/Map/Map", "Chunk map of address space profiling.");
1766
1767	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbHits, "/PGM/RZ/Page/MapTlbHits", "TLB hits.");
1768	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbMisses, "/PGM/RZ/Page/MapTlbMisses", "TLB misses.");
1769	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsR3", "TLB hits.");
1770	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesR3", "TLB misses.");
1771	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbHits, "/PGM/R3/Page/MapTlbHits", "TLB hits.");
1772	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbMisses, "/PGM/R3/Page/MapTlbMisses", "TLB misses.");
1773	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushes, "/PGM/R3/Page/MapTlbFlushes", "TLB flushes (all contexts).");
1774	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushEntry, "/PGM/R3/Page/MapTlbFlushEntry", "TLB entry flushes (all contexts).");
1775
1776	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbHits, "/PGM/RZ/RamRange/TlbHits", "TLB hits.");
1777	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbMisses, "/PGM/RZ/RamRange/TlbMisses", "TLB misses.");
1778	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbHits, "/PGM/R3/RamRange/TlbHits", "TLB hits.");
1779	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbMisses, "/PGM/R3/RamRange/TlbMisses", "TLB misses.");
1780
1781	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualUpdate, "/PGM/RZ/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1782	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualReset, "/PGM/RZ/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1783	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualUpdate, "/PGM/R3/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1784	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualReset, "/PGM/R3/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1785
1786	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerReset, "/PGM/RZ/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1787	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerReset, "/PGM/R3/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1788	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupHits, "/PGM/RZ/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1789	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupHits, "/PGM/R3/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1790	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupMisses, "/PGM/RZ/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1791	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupMisses, "/PGM/R3/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1792	PGM_REG_PROFILE(&pStats->StatRZVirtHandlerSearchByPhys, "/PGM/RZ/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1793	PGM_REG_PROFILE(&pStats->StatR3VirtHandlerSearchByPhys, "/PGM/R3/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1794
1795	PGM_REG_COUNTER(&pStats->StatRZPageReplaceShared, "/PGM/RZ/Page/ReplacedShared", "Times a shared page was replaced.");
1796	PGM_REG_COUNTER(&pStats->StatRZPageReplaceZero, "/PGM/RZ/Page/ReplacedZero", "Times the zero page was replaced.");
1797	/// @todo PGM_REG_COUNTER(&pStats->StatRZPageHandyAllocs, "/PGM/RZ/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1798	PGM_REG_COUNTER(&pStats->StatR3PageReplaceShared, "/PGM/R3/Page/ReplacedShared", "Times a shared page was replaced.");
1799	PGM_REG_COUNTER(&pStats->StatR3PageReplaceZero, "/PGM/R3/Page/ReplacedZero", "Times the zero page was replaced.");
1800	/// @todo PGM_REG_COUNTER(&pStats->StatR3PageHandyAllocs, "/PGM/R3/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1801
1802	PGM_REG_COUNTER(&pStats->StatRZPhysRead, "/PGM/RZ/Phys/Read", "The number of times PGMPhysRead was called.");
1803	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysReadBytes, "/PGM/RZ/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1804	PGM_REG_COUNTER(&pStats->StatRZPhysWrite, "/PGM/RZ/Phys/Write", "The number of times PGMPhysWrite was called.");
1805	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysWriteBytes, "/PGM/RZ/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1806	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleRead, "/PGM/RZ/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1807	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleReadBytes, "/PGM/RZ/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1808	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleWrite, "/PGM/RZ/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1809	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleWriteBytes, "/PGM/RZ/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1810
1811	/* GC only: */
1812	PGM_REG_COUNTER(&pStats->StatRCInvlPgConflict, "/PGM/RC/InvlPgConflict", "Number of times PGMInvalidatePage() detected a mapping conflict.");
1813	PGM_REG_COUNTER(&pStats->StatRCInvlPgSyncMonCR3, "/PGM/RC/InvlPgSyncMonitorCR3", "Number of times PGMInvalidatePage() ran into PGM_SYNC_MONITOR_CR3.");
1814
1815	PGM_REG_COUNTER(&pStats->StatRCPhysRead, "/PGM/RC/Phys/Read", "The number of times PGMPhysRead was called.");
1816	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysReadBytes, "/PGM/RC/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1817	PGM_REG_COUNTER(&pStats->StatRCPhysWrite, "/PGM/RC/Phys/Write", "The number of times PGMPhysWrite was called.");
1818	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysWriteBytes, "/PGM/RC/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1819	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleRead, "/PGM/RC/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1820	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleReadBytes, "/PGM/RC/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1821	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleWrite, "/PGM/RC/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1822	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleWriteBytes, "/PGM/RC/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1823
1824	PGM_REG_COUNTER(&pStats->StatTrackVirgin, "/PGM/Track/Virgin", "The number of first time shadowings");
1825	PGM_REG_COUNTER(&pStats->StatTrackAliased, "/PGM/Track/Aliased", "The number of times switching to cRef2, i.e. the page is being shadowed by two PTs.");
1826	PGM_REG_COUNTER(&pStats->StatTrackAliasedMany, "/PGM/Track/AliasedMany", "The number of times we're tracking using cRef2.");
1827	PGM_REG_COUNTER(&pStats->StatTrackAliasedLots, "/PGM/Track/AliasedLots", "The number of times we're hitting pages which has overflowed cRef2");
1828	PGM_REG_COUNTER(&pStats->StatTrackOverflows, "/PGM/Track/Overflows", "The number of times the extent list grows too long.");
1829	PGM_REG_COUNTER(&pStats->StatTrackNoExtentsLeft, "/PGM/Track/NoExtentLeft", "The number of times the extent list was exhausted.");
1830	PGM_REG_PROFILE(&pStats->StatTrackDeref, "/PGM/Track/Deref", "Profiling of SyncPageWorkerTrackDeref (expensive).");
1831
1832	# undef PGM_REG_COUNTER
1833	# undef PGM_REG_PROFILE
1834	#endif
1835
1836	/*
1837	* Note! The layout below matches the member layout exactly!
1838	*/
1839
1840	/*
1841	* Common - stats
1842	*/
1843	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1844	{
1845	PPGMCPU pPgmCpu = &pVM->aCpus[idCpu].pgm.s;
1846
1847	#define PGM_REG_COUNTER(a, b, c) \
1848	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b, idCpu); \
1849	AssertRC(rc);
1850	#define PGM_REG_PROFILE(a, b, c) \
1851	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b, idCpu); \
1852	AssertRC(rc);
1853
1854	PGM_REG_COUNTER(&pPgmCpu->cGuestModeChanges, "/PGM/CPU%u/cGuestModeChanges", "Number of guest mode changes.");
1855	PGM_REG_COUNTER(&pPgmCpu->cA20Changes, "/PGM/CPU%u/cA20Changes", "Number of A20 gate changes.");
1856
1857	#ifdef VBOX_WITH_STATISTICS
1858	PGMCPUSTATS *pCpuStats = pVM->aCpus[idCpu].pgm.s.pStatsR3;
1859
1860	# if 0 /* rarely useful; leave for debugging. */
1861	for (unsigned j = 0; j < RT_ELEMENTS(pPgmCpu->StatSyncPtPD); j++)
1862	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1863	"The number of SyncPT per PD n.", "/PGM/CPU%u/PDSyncPT/%04X", i, j);
1864	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatSyncPagePD); j++)
1865	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1866	"The number of SyncPage per PD n.", "/PGM/CPU%u/PDSyncPage/%04X", i, j);
1867	# endif
1868	/* R0 only: */
1869	PGM_REG_PROFILE(&pCpuStats->StatR0NpMiscfg, "/PGM/CPU%u/R0/NpMiscfg", "PGMR0Trap0eHandlerNPMisconfig() profiling.");
1870	PGM_REG_COUNTER(&pCpuStats->StatR0NpMiscfgSyncPage, "/PGM/CPU%u/R0/NpMiscfgSyncPage", "SyncPage calls from PGMR0Trap0eHandlerNPMisconfig().");
1871
1872	/* RZ only: */
1873	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0e, "/PGM/CPU%u/RZ/Trap0e", "Profiling of the PGMTrap0eHandler() body.");
1874	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Ballooned, "/PGM/CPU%u/RZ/Trap0e/Time2/Ballooned", "Profiling of the Trap0eHandler body when the cause is read access to a ballooned page.");
1875	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2CSAM, "/PGM/CPU%u/RZ/Trap0e/Time2/CSAM", "Profiling of the Trap0eHandler body when the cause is CSAM.");
1876	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2DirtyAndAccessed, "/PGM/CPU%u/RZ/Trap0e/Time2/DirtyAndAccessedBits", "Profiling of the Trap0eHandler body when the cause is dirty and/or accessed bit emulation.");
1877	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2GuestTrap, "/PGM/CPU%u/RZ/Trap0e/Time2/GuestTrap", "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1878	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerPhysical", "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1879	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndVirt, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerVirtual", "Profiling of the Trap0eHandler body when the cause is a virtual handler.");
1880	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndUnhandled, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerUnhandled", "Profiling of the Trap0eHandler body when the cause is access outside the monitored areas of a monitored page.");
1881	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2InvalidPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/InvalidPhys", "Profiling of the Trap0eHandler body when the cause is access to an invalid physical guest address.");
1882	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2MakeWritable, "/PGM/CPU%u/RZ/Trap0e/Time2/MakeWritable", "Profiling of the Trap0eHandler body when the cause is that a page needed to be made writeable.");
1883	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Mapping, "/PGM/CPU%u/RZ/Trap0e/Time2/Mapping", "Profiling of the Trap0eHandler body when the cause is related to the guest mappings.");
1884	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Misc, "/PGM/CPU%u/RZ/Trap0e/Time2/Misc", "Profiling of the Trap0eHandler body when the cause is not known.");
1885	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSync, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSync", "Profiling of the Trap0eHandler body when the cause is an out-of-sync page.");
1886	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncHndPhys", "Profiling of the Trap0eHandler body when the cause is an out-of-sync physical handler page.");
1887	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndVirt, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncHndVirt", "Profiling of the Trap0eHandler body when the cause is an out-of-sync virtual handler page.");
1888	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2OutOfSyncHndObs, "/PGM/CPU%u/RZ/Trap0e/Time2/OutOfSyncObsHnd", "Profiling of the Trap0eHandler body when the cause is an obsolete handler page.");
1889	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2SyncPT, "/PGM/CPU%u/RZ/Trap0e/Time2/SyncPT", "Profiling of the Trap0eHandler body when the cause is lazy syncing of a PT.");
1890	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2WPEmulation, "/PGM/CPU%u/RZ/Trap0e/Time2/WPEmulation", "Profiling of the Trap0eHandler body when the cause is CR0.WP emulation.");
1891	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eConflicts, "/PGM/CPU%u/RZ/Trap0e/Conflicts", "The number of times #PF was caused by an undetected conflict.");
1892	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersMapping, "/PGM/CPU%u/RZ/Trap0e/Handlers/Mapping", "Number of traps due to access handlers in mappings.");
1893	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersOutOfSync, "/PGM/CPU%u/RZ/Trap0e/Handlers/OutOfSync", "Number of traps due to out-of-sync handled pages.");
1894	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAll, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAll", "Number of traps due to physical all-access handlers.");
1895	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAllOpt, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAllOpt", "Number of the physical all-access handler traps using the optimization.");
1896	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysWrite, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysWrite", "Number of traps due to physical write-access handlers.");
1897	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtual, "/PGM/CPU%u/RZ/Trap0e/Handlers/Virtual", "Number of traps due to virtual access handlers.");
1898	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtualByPhys, "/PGM/CPU%u/RZ/Trap0e/Handlers/VirtualByPhys", "Number of traps due to virtual access handlers by physical address.");
1899	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtualUnmarked,"/PGM/CPU%u/RZ/Trap0e/Handlers/VirtualUnmarked","Number of traps due to virtual access handlers by virtual address (without proper physical flags).");
1900	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersUnhandled, "/PGM/CPU%u/RZ/Trap0e/Handlers/Unhandled", "Number of traps due to access outside range of monitored page(s).");
1901	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersInvalid, "/PGM/CPU%u/RZ/Trap0e/Handlers/Invalid", "Number of traps due to access to invalid physical memory.");
1902	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPRead", "Number of user mode not present read page faults.");
1903	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPWrite", "Number of user mode not present write page faults.");
1904	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/Write", "Number of user mode write page faults.");
1905	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSReserved, "/PGM/CPU%u/RZ/Trap0e/Err/User/Reserved", "Number of user mode reserved bit page faults.");
1906	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/User/NXE", "Number of user mode NXE page faults.");
1907	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/Read", "Number of user mode read page faults.");
1908	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPRead", "Number of supervisor mode not present read page faults.");
1909	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPWrite", "Number of supervisor mode not present write page faults.");
1910	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Write", "Number of supervisor mode write page faults.");
1911	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVReserved, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Reserved", "Number of supervisor mode reserved bit page faults.");
1912	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NXE", "Number of supervisor mode NXE page faults.");
1913	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPF, "/PGM/CPU%u/RZ/Trap0e/GuestPF", "Number of real guest page faults.");
1914	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPFMapping, "/PGM/CPU%u/RZ/Trap0e/GuestPF/InMapping", "Number of real guest page faults in a mapping.");
1915	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulInRZ, "/PGM/CPU%u/RZ/Trap0e/WP/InRZ", "Number of guest page faults due to X86_CR0_WP emulation.");
1916	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulToR3, "/PGM/CPU%u/RZ/Trap0e/WP/ToR3", "Number of guest page faults due to X86_CR0_WP emulation (forward to R3 for emulation).");
1917	#if 0 /* rarely useful; leave for debugging. */
1918	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatRZTrap0ePD); j++)
1919	STAMR3RegisterF(pVM, &pCpuStats->StatRZTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1920	"The number of traps in page directory n.", "/PGM/CPU%u/RZ/Trap0e/PD/%04X", i, j);
1921	#endif
1922	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteHandled, "/PGM/CPU%u/RZ/CR3WriteHandled", "The number of times the Guest CR3 change was successfully handled.");
1923	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteUnhandled, "/PGM/CPU%u/RZ/CR3WriteUnhandled", "The number of times the Guest CR3 change was passed back to the recompiler.");
1924	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteConflict, "/PGM/CPU%u/RZ/CR3WriteConflict", "The number of times the Guest CR3 monitoring detected a conflict.");
1925	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteHandled, "/PGM/CPU%u/RZ/ROMWriteHandled", "The number of times the Guest ROM change was successfully handled.");
1926	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteUnhandled, "/PGM/CPU%u/RZ/ROMWriteUnhandled", "The number of times the Guest ROM change was passed back to the recompiler.");
1927
1928	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapMigrateInvlPg, "/PGM/CPU%u/RZ/DynMap/MigrateInvlPg", "invlpg count in PGMR0DynMapMigrateAutoSet.");
1929	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapGCPageInl, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl", "Calls to pgmR0DynMapGCPageInlined.");
1930	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Hits", "Hash table lookup hits.");
1931	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Misses", "Misses that falls back to the code common.");
1932	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamHits", "1st ram range hits.");
1933	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamMisses", "1st ram range misses, takes slow path.");
1934	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPageInl, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl", "Calls to pgmRZDynMapHCPageInlined.");
1935	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Hits", "Hash table lookup hits.");
1936	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Misses", "Misses that falls back to the code common.");
1937	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPage, "/PGM/CPU%u/RZ/DynMap/Page", "Calls to pgmR0DynMapPage");
1938	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetOptimize, "/PGM/CPU%u/RZ/DynMap/Page/SetOptimize", "Calls to pgmRZDynMapOptimizeAutoSet.");
1939	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchFlushes, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchFlushes", "Set search restoring to subset flushes.");
1940	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchHits, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchHits", "Set search hits.");
1941	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchMisses, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchMisses", "Set search misses.");
1942	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPage, "/PGM/CPU%u/RZ/DynMap/Page/HCPage", "Calls to pgmRZDynMapHCPageCommon (ring-0).");
1943	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits0, "/PGM/CPU%u/RZ/DynMap/Page/Hits0", "Hits at iPage+0");
1944	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits1, "/PGM/CPU%u/RZ/DynMap/Page/Hits1", "Hits at iPage+1");
1945	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits2, "/PGM/CPU%u/RZ/DynMap/Page/Hits2", "Hits at iPage+2");
1946	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageInvlPg, "/PGM/CPU%u/RZ/DynMap/Page/InvlPg", "invlpg count in pgmR0DynMapPageSlow.");
1947	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlow, "/PGM/CPU%u/RZ/DynMap/Page/Slow", "Calls to pgmR0DynMapPageSlow - subtract this from pgmR0DynMapPage to get 1st level hits.");
1948	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopHits, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopHits" , "Hits in the loop path.");
1949	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopMisses, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopMisses", "Misses in the loop path. NonLoopMisses = Slow - SlowLoopHit - SlowLoopMisses");
1950	//PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLostHits, "/PGM/CPU%u/R0/DynMap/Page/SlowLostHits", "Lost hits.");
1951	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSubsets, "/PGM/CPU%u/RZ/DynMap/Subsets", "Times PGMRZDynMapPushAutoSubset was called.");
1952	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPopFlushes, "/PGM/CPU%u/RZ/DynMap/SubsetPopFlushes", "Times PGMRZDynMapPopAutoSubset flushes the subset.");
1953	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[0], "/PGM/CPU%u/RZ/DynMap/SetFilledPct000..09", "00-09% filled (RC: min(set-size, dynmap-size))");
1954	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[1], "/PGM/CPU%u/RZ/DynMap/SetFilledPct010..19", "10-19% filled (RC: min(set-size, dynmap-size))");
1955	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[2], "/PGM/CPU%u/RZ/DynMap/SetFilledPct020..29", "20-29% filled (RC: min(set-size, dynmap-size))");
1956	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[3], "/PGM/CPU%u/RZ/DynMap/SetFilledPct030..39", "30-39% filled (RC: min(set-size, dynmap-size))");
1957	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[4], "/PGM/CPU%u/RZ/DynMap/SetFilledPct040..49", "40-49% filled (RC: min(set-size, dynmap-size))");
1958	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[5], "/PGM/CPU%u/RZ/DynMap/SetFilledPct050..59", "50-59% filled (RC: min(set-size, dynmap-size))");
1959	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[6], "/PGM/CPU%u/RZ/DynMap/SetFilledPct060..69", "60-69% filled (RC: min(set-size, dynmap-size))");
1960	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[7], "/PGM/CPU%u/RZ/DynMap/SetFilledPct070..79", "70-79% filled (RC: min(set-size, dynmap-size))");
1961	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[8], "/PGM/CPU%u/RZ/DynMap/SetFilledPct080..89", "80-89% filled (RC: min(set-size, dynmap-size))");
1962	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[9], "/PGM/CPU%u/RZ/DynMap/SetFilledPct090..99", "90-99% filled (RC: min(set-size, dynmap-size))");
1963	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[10], "/PGM/CPU%u/RZ/DynMap/SetFilledPct100", "100% filled (RC: min(set-size, dynmap-size))");
1964
1965	/* HC only: */
1966
1967	/* RZ & R3: */
1968	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3, "/PGM/CPU%u/RZ/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1969	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3Handlers, "/PGM/CPU%u/RZ/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1970	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3Global, "/PGM/CPU%u/RZ/SyncCR3/Global", "The number of global CR3 syncs.");
1971	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3NotGlobal, "/PGM/CPU%u/RZ/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1972	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstCacheHit, "/PGM/CPU%u/RZ/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1973	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreed, "/PGM/CPU%u/RZ/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1974	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreedSrcNP, "/PGM/CPU%u/RZ/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
1975	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstNotPresent, "/PGM/CPU%u/RZ/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
1976	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1977	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPT, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
1978	PGM_REG_PROFILE(&pCpuStats->StatRZSyncPT, "/PGM/CPU%u/RZ/SyncPT", "Profiling of the pfnSyncPT() body.");
1979	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPTFailed, "/PGM/CPU%u/RZ/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1980	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4K, "/PGM/CPU%u/RZ/SyncPT/4K", "Nr of 4K PT syncs");
1981	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4M, "/PGM/CPU%u/RZ/SyncPT/4M", "Nr of 4M PT syncs");
1982	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDNAs, "/PGM/CPU%u/RZ/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
1983	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDOutOfSync, "/PGM/CPU%u/RZ/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1984	PGM_REG_COUNTER(&pCpuStats->StatRZAccessedPage, "/PGM/CPU%u/RZ/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1985	PGM_REG_PROFILE(&pCpuStats->StatRZDirtyBitTracking, "/PGM/CPU%u/RZ/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1986	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPage, "/PGM/CPU%u/RZ/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1987	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageBig, "/PGM/CPU%u/RZ/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1988	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageSkipped, "/PGM/CPU%u/RZ/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1989	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageTrap, "/PGM/CPU%u/RZ/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1990	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageStale, "/PGM/CPU%u/RZ/DirtyPage/Stale", "The number of traps generated for dirty bit tracking (stale tlb entries).");
1991	PGM_REG_COUNTER(&pCpuStats->StatRZDirtiedPage, "/PGM/CPU%u/RZ/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1992	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyTrackRealPF, "/PGM/CPU%u/RZ/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1993	PGM_REG_COUNTER(&pCpuStats->StatRZPageAlreadyDirty, "/PGM/CPU%u/RZ/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1994	PGM_REG_PROFILE(&pCpuStats->StatRZInvalidatePage, "/PGM/CPU%u/RZ/InvalidatePage", "PGMInvalidatePage() profiling.");
1995	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4KBPages, "/PGM/CPU%u/RZ/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1996	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPages, "/PGM/CPU%u/RZ/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1997	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPagesSkip, "/PGM/CPU%u/RZ/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1998	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDMappings, "/PGM/CPU%u/RZ/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
1999	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNAs, "/PGM/CPU%u/RZ/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
2000	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNPs, "/PGM/CPU%u/RZ/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
2001	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDOutOfSync, "/PGM/CPU%u/RZ/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
2002	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePageSkipped, "/PGM/CPU%u/RZ/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
2003	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncSupervisor, "/PGM/CPU%u/RZ/OutOfSync/SuperVisor", "Number of traps due to pages out of sync (P) and times VerifyAccessSyncPage calls SyncPage.");
2004	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncUser, "/PGM/CPU%u/RZ/OutOfSync/User", "Number of traps due to pages out of sync (P) and times VerifyAccessSyncPage calls SyncPage.");
2005	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncSupervisorWrite,"/PGM/CPU%u/RZ/OutOfSync/SuperVisorWrite", "Number of traps due to pages out of sync (RW) and times VerifyAccessSyncPage calls SyncPage.");
2006	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncUserWrite, "/PGM/CPU%u/RZ/OutOfSync/UserWrite", "Number of traps due to pages out of sync (RW) and times VerifyAccessSyncPage calls SyncPage.");
2007	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncBallloon, "/PGM/CPU%u/RZ/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
2008	PGM_REG_PROFILE(&pCpuStats->StatRZPrefetch, "/PGM/CPU%u/RZ/Prefetch", "PGMPrefetchPage profiling.");
2009	PGM_REG_PROFILE(&pCpuStats->StatRZFlushTLB, "/PGM/CPU%u/RZ/FlushTLB", "Profiling of the PGMFlushTLB() body.");
2010	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3, "/PGM/CPU%u/RZ/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
2011	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3Global, "/PGM/CPU%u/RZ/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
2012	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3, "/PGM/CPU%u/RZ/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
2013	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3Global, "/PGM/CPU%u/RZ/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
2014	PGM_REG_PROFILE(&pCpuStats->StatRZGstModifyPage, "/PGM/CPU%u/RZ/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
2015
2016	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3, "/PGM/CPU%u/R3/SyncCR3", "Profiling of the PGMSyncCR3() body.");
2017	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3Handlers, "/PGM/CPU%u/R3/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
2018	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3Global, "/PGM/CPU%u/R3/SyncCR3/Global", "The number of global CR3 syncs.");
2019	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3NotGlobal, "/PGM/CPU%u/R3/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
2020	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstCacheHit, "/PGM/CPU%u/R3/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
2021	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreed, "/PGM/CPU%u/R3/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
2022	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreedSrcNP, "/PGM/CPU%u/R3/SyncCR3/DstFreedSrcNP", "The number of times we've had to free a shadow entry for which the source entry was not present.");
2023	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstNotPresent, "/PGM/CPU%u/R3/SyncCR3/DstNotPresent", "The number of times we've encountered a not present shadow entry for a present guest entry.");
2024	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
2025	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPT, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPT", "The number of times a page table with only global entries wasn't flushed.");
2026	PGM_REG_PROFILE(&pCpuStats->StatR3SyncPT, "/PGM/CPU%u/R3/SyncPT", "Profiling of the pfnSyncPT() body.");
2027	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPTFailed, "/PGM/CPU%u/R3/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
2028	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4K, "/PGM/CPU%u/R3/SyncPT/4K", "Nr of 4K PT syncs");
2029	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4M, "/PGM/CPU%u/R3/SyncPT/4M", "Nr of 4M PT syncs");
2030	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDNAs, "/PGM/CPU%u/R3/SyncPagePDNAs", "The number of time we've marked a PD not present from SyncPage to virtualize the accessed bit.");
2031	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDOutOfSync, "/PGM/CPU%u/R3/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
2032	PGM_REG_COUNTER(&pCpuStats->StatR3AccessedPage, "/PGM/CPU%u/R3/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
2033	PGM_REG_PROFILE(&pCpuStats->StatR3DirtyBitTracking, "/PGM/CPU%u/R3/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
2034	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPage, "/PGM/CPU%u/R3/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
2035	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageBig, "/PGM/CPU%u/R3/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
2036	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageSkipped, "/PGM/CPU%u/R3/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
2037	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageTrap, "/PGM/CPU%u/R3/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
2038	PGM_REG_COUNTER(&pCpuStats->StatR3DirtiedPage, "/PGM/CPU%u/R3/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
2039	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyTrackRealPF, "/PGM/CPU%u/R3/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
2040	PGM_REG_COUNTER(&pCpuStats->StatR3PageAlreadyDirty, "/PGM/CPU%u/R3/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
2041	PGM_REG_PROFILE(&pCpuStats->StatR3InvalidatePage, "/PGM/CPU%u/R3/InvalidatePage", "PGMInvalidatePage() profiling.");
2042	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4KBPages, "/PGM/CPU%u/R3/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
2043	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPages, "/PGM/CPU%u/R3/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
2044	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPagesSkip, "/PGM/CPU%u/R3/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
2045	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDMappings, "/PGM/CPU%u/R3/InvalidatePage/PDMappings", "The number of times PGMInvalidatePage() was called for a page directory containing mappings (no conflict).");
2046	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNAs, "/PGM/CPU%u/R3/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
2047	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNPs, "/PGM/CPU%u/R3/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
2048	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDOutOfSync, "/PGM/CPU%u/R3/InvalidatePage/PDOutOfSync", "The number of times PGMInvalidatePage() was called for an out of sync page directory.");
2049	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePageSkipped, "/PGM/CPU%u/R3/InvalidatePage/Skipped", "The number of times PGMInvalidatePage() was skipped due to not present shw or pending pending SyncCR3.");
2050	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncSupervisor, "/PGM/CPU%u/R3/OutOfSync/SuperVisor", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
2051	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncUser, "/PGM/CPU%u/R3/OutOfSync/User", "Number of traps due to pages out of sync and times VerifyAccessSyncPage calls SyncPage.");
2052	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncBallloon, "/PGM/CPU%u/R3/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
2053	PGM_REG_PROFILE(&pCpuStats->StatR3Prefetch, "/PGM/CPU%u/R3/Prefetch", "PGMPrefetchPage profiling.");
2054	PGM_REG_PROFILE(&pCpuStats->StatR3FlushTLB, "/PGM/CPU%u/R3/FlushTLB", "Profiling of the PGMFlushTLB() body.");
2055	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3, "/PGM/CPU%u/R3/FlushTLB/NewCR3", "The number of times PGMFlushTLB was called with a new CR3, non-global. (switch)");
2056	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3Global, "/PGM/CPU%u/R3/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
2057	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3, "/PGM/CPU%u/R3/FlushTLB/SameCR3", "The number of times PGMFlushTLB was called with the same CR3, non-global. (flush)");
2058	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3Global, "/PGM/CPU%u/R3/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
2059	PGM_REG_PROFILE(&pCpuStats->StatR3GstModifyPage, "/PGM/CPU%u/R3/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
2060	#endif /* VBOX_WITH_STATISTICS */
2061
2062	#undef PGM_REG_PROFILE
2063	#undef PGM_REG_COUNTER
2064
2065	}
2066
2067	return VINF_SUCCESS;
2068	}
2069
2070
2071	/**
2072	* Init the PGM bits that rely on VMMR0 and MM to be fully initialized.
2073	*
2074	* The dynamic mapping area will also be allocated and initialized at this
2075	* time. We could allocate it during PGMR3Init of course, but the mapping
2076	* wouldn't be allocated at that time preventing us from setting up the
2077	* page table entries with the dummy page.
2078	*
2079	* @returns VBox status code.
2080	* @param pVM Pointer to the VM.
2081	*/
2082	VMMR3DECL(int) PGMR3InitDynMap(PVM pVM)
2083	{
2084	RTGCPTR GCPtr;
2085	int rc;
2086
2087	/*
2088	* Reserve space for the dynamic mappings.
2089	*/
2090	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping", &GCPtr);
2091	if (RT_SUCCESS(rc))
2092	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2093
2094	if ( RT_SUCCESS(rc)
2095	&& (pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) != ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT))
2096	{
2097	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping not crossing", &GCPtr);
2098	if (RT_SUCCESS(rc))
2099	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2100	}
2101	if (RT_SUCCESS(rc))
2102	{
2103	AssertRelease((pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) == ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT));
2104	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
2105	}
2106	return rc;
2107	}
2108
2109
2110	/**
2111	* Ring-3 init finalizing.
2112	*
2113	* @returns VBox status code.
2114	* @param pVM Pointer to the VM.
2115	*/
2116	VMMR3DECL(int) PGMR3InitFinalize(PVM pVM)
2117	{
2118	int rc;
2119
2120	/*
2121	* Reserve space for the dynamic mappings.
2122	* Initialize the dynamic mapping pages with dummy pages to simply the cache.
2123	*/
2124	/* get the pointer to the page table entries. */
2125	PPGMMAPPING pMapping = pgmGetMapping(pVM, pVM->pgm.s.pbDynPageMapBaseGC);
2126	AssertRelease(pMapping);
2127	const uintptr_t off = pVM->pgm.s.pbDynPageMapBaseGC - pMapping->GCPtr;
2128	const unsigned iPT = off >> X86_PD_SHIFT;
2129	const unsigned iPG = (off >> X86_PT_SHIFT) & X86_PT_MASK;
2130	pVM->pgm.s.paDynPageMap32BitPTEsGC = pMapping->aPTs[iPT].pPTRC + iPG * sizeof(pMapping->aPTs[0].pPTR3->a[0]);
2131	pVM->pgm.s.paDynPageMapPaePTEsGC = pMapping->aPTs[iPT].paPaePTsRC + iPG * sizeof(pMapping->aPTs[0].paPaePTsR3->a[0]);
2132
2133	/* init cache area */
2134	RTHCPHYS HCPhysDummy = MMR3PageDummyHCPhys(pVM);
2135	for (uint32_t offDynMap = 0; offDynMap < MM_HYPER_DYNAMIC_SIZE; offDynMap += PAGE_SIZE)
2136	{
2137	rc = PGMMap(pVM, pVM->pgm.s.pbDynPageMapBaseGC + offDynMap, HCPhysDummy, PAGE_SIZE, 0);
2138	AssertRCReturn(rc, rc);
2139	}
2140
2141	/*
2142	* Determine the max physical address width (MAXPHYADDR) and apply it to
2143	* all the mask members and stuff.
2144	*/
2145	uint32_t cMaxPhysAddrWidth;
2146	uint32_t uMaxExtLeaf = ASMCpuId_EAX(0x80000000);
2147	if ( uMaxExtLeaf >= 0x80000008
2148	&& uMaxExtLeaf <= 0x80000fff)
2149	{
2150	cMaxPhysAddrWidth = ASMCpuId_EAX(0x80000008) & 0xff;
2151	LogRel(("PGM: The CPU physical address width is %u bits\n", cMaxPhysAddrWidth));
2152	cMaxPhysAddrWidth = RT_MIN(52, cMaxPhysAddrWidth);
2153	pVM->pgm.s.fLessThan52PhysicalAddressBits = cMaxPhysAddrWidth < 52;
2154	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 52; iBit++)
2155	pVM->pgm.s.HCPhysInvMmioPg \|= RT_BIT_64(iBit);
2156	}
2157	else
2158	{
2159	LogRel(("PGM: ASSUMING CPU physical address width of 48 bits (uMaxExtLeaf=%#x)\n", uMaxExtLeaf));
2160	cMaxPhysAddrWidth = 48;
2161	pVM->pgm.s.fLessThan52PhysicalAddressBits = true;
2162	pVM->pgm.s.HCPhysInvMmioPg \|= UINT64_C(0x000f0000000000);
2163	}
2164
2165	pVM->pgm.s.GCPhysInvAddrMask = 0;
2166	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 64; iBit++)
2167	pVM->pgm.s.GCPhysInvAddrMask \|= RT_BIT_64(iBit);
2168
2169	/*
2170	* Initialize the invalid paging entry masks, assuming NX is disabled.
2171	*/
2172	uint64_t fMbzPageFrameMask = pVM->pgm.s.GCPhysInvAddrMask & UINT64_C(0x000ffffffffff000);
2173	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2174	{
2175	PVMCPU pVCpu = &pVM->aCpus[iCpu];
2176
2177	/** @todo The manuals are not entirely clear whether the physical
2178	* address width is relevant. See table 5-9 in the intel
2179	* manual vs the PDE4M descriptions. Write testcase (NP). */
2180	pVCpu->pgm.s.fGst32BitMbzBigPdeMask = ((uint32_t)(fMbzPageFrameMask >> (32 - 13)) & X86_PDE4M_PG_HIGH_MASK)
2181	\| X86_PDE4M_MBZ_MASK;
2182
2183	pVCpu->pgm.s.fGstPaeMbzPteMask = fMbzPageFrameMask \| X86_PTE_PAE_MBZ_MASK_NO_NX;
2184	pVCpu->pgm.s.fGstPaeMbzPdeMask = fMbzPageFrameMask \| X86_PDE_PAE_MBZ_MASK_NO_NX;
2185	pVCpu->pgm.s.fGstPaeMbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_PAE_MBZ_MASK_NO_NX;
2186	pVCpu->pgm.s.fGstPaeMbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_PAE_MBZ_MASK;
2187
2188	pVCpu->pgm.s.fGstAmd64MbzPteMask = fMbzPageFrameMask \| X86_PTE_LM_MBZ_MASK_NO_NX;
2189	pVCpu->pgm.s.fGstAmd64MbzPdeMask = fMbzPageFrameMask \| X86_PDE_LM_MBZ_MASK_NX;
2190	pVCpu->pgm.s.fGstAmd64MbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_LM_MBZ_MASK_NX;
2191	pVCpu->pgm.s.fGstAmd64MbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_LM_MBZ_MASK_NO_NX;
2192	pVCpu->pgm.s.fGstAmd64MbzBigPdpeMask = fMbzPageFrameMask \| X86_PDPE1G_LM_MBZ_MASK_NO_NX;
2193	pVCpu->pgm.s.fGstAmd64MbzPml4eMask = fMbzPageFrameMask \| X86_PML4E_MBZ_MASK_NO_NX;
2194
2195	pVCpu->pgm.s.fGst64ShadowedPteMask = X86_PTE_P \| X86_PTE_RW \| X86_PTE_US \| X86_PTE_G \| X86_PTE_A \| X86_PTE_D;
2196	pVCpu->pgm.s.fGst64ShadowedPdeMask = X86_PDE_P \| X86_PDE_RW \| X86_PDE_US \| X86_PDE_A;
2197	pVCpu->pgm.s.fGst64ShadowedBigPdeMask = X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_A;
2198	pVCpu->pgm.s.fGst64ShadowedBigPde4PteMask =
2199	X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_G \| X86_PDE4M_A \| X86_PDE4M_D;
2200	pVCpu->pgm.s.fGstAmd64ShadowedPdpeMask = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A;
2201	pVCpu->pgm.s.fGstAmd64ShadowedPml4eMask = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A;
2202	}
2203
2204	/*
2205	* Note that AMD uses all the 8 reserved bits for the address (so 40 bits in total);
2206	* Intel only goes up to 36 bits, so we stick to 36 as well.
2207	* Update: More recent intel manuals specifies 40 bits just like AMD.
2208	*/
2209	uint32_t u32Dummy, u32Features;
2210	CPUMGetGuestCpuId(VMMGetCpu(pVM), 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
2211	if (u32Features & X86_CPUID_FEATURE_EDX_PSE36)
2212	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(RT_MAX(36, cMaxPhysAddrWidth)) - 1;
2213	else
2214	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1;
2215
2216	/*
2217	* Allocate memory if we're supposed to do that.
2218	*/
2219	if (pVM->pgm.s.fRamPreAlloc)
2220	rc = pgmR3PhysRamPreAllocate(pVM);
2221
2222	LogRel(("PGMR3InitFinalize: 4 MB PSE mask %RGp\n", pVM->pgm.s.GCPhys4MBPSEMask));
2223	return rc;
2224	}
2225
2226
2227	/**
2228	* Init phase completed callback.
2229	*
2230	* @returns VBox status code.
2231	* @param pVM Pointer to the VM.
2232	* @param enmWhat What has been completed.
2233	* @thread EMT(0)
2234	*/
2235	VMMR3_INT_DECL(int) PGMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
2236	{
2237	switch (enmWhat)
2238	{
2239	case VMINITCOMPLETED_HM:
2240	#ifdef VBOX_WITH_PCI_PASSTHROUGH
2241	if (pVM->pgm.s.fPciPassthrough)
2242	{
2243	AssertLogRelReturn(pVM->pgm.s.fRamPreAlloc, VERR_PCI_PASSTHROUGH_NO_RAM_PREALLOC);
2244	AssertLogRelReturn(HMIsEnabled(pVM), VERR_PCI_PASSTHROUGH_NO_HM);
2245	AssertLogRelReturn(HMIsNestedPagingActive(pVM), VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING);
2246
2247	/*
2248	* Report assignments to the IOMMU (hope that's good enough for now).
2249	*/
2250	if (pVM->pgm.s.fPciPassthrough)
2251	{
2252	int rc = VMMR3CallR0(pVM, VMMR0_DO_PGM_PHYS_SETUP_IOMMU, 0, NULL);
2253	AssertRCReturn(rc, rc);
2254	}
2255	}
2256	#else
2257	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough, VERR_PGM_PCI_PASSTHRU_MISCONFIG);
2258	#endif
2259	break;
2260
2261	default:
2262	/* shut up gcc */
2263	break;
2264	}
2265
2266	return VINF_SUCCESS;
2267	}
2268
2269
2270	/**
2271	* Applies relocations to data and code managed by this component.
2272	*
2273	* This function will be called at init and whenever the VMM need to relocate it
2274	* self inside the GC.
2275	*
2276	* @param pVM The VM.
2277	* @param offDelta Relocation delta relative to old location.
2278	*/
2279	VMMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
2280	{
2281	LogFlow(("PGMR3Relocate %RGv to %RGv\n", pVM->pgm.s.GCPtrCR3Mapping, pVM->pgm.s.GCPtrCR3Mapping + offDelta));
2282
2283	/*
2284	* Paging stuff.
2285	*/
2286	pVM->pgm.s.GCPtrCR3Mapping += offDelta;
2287
2288	pgmR3ModeDataInit(pVM, true /* resolve GC/R0 symbols */);
2289
2290	/* Shadow, guest and both mode switch & relocation for each VCPU. */
2291	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2292	{
2293	PVMCPU pVCpu = &pVM->aCpus[i];
2294
2295	pgmR3ModeDataSwitch(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
2296
2297	PGM_SHW_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2298	PGM_GST_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2299	PGM_BTH_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2300	}
2301
2302	/*
2303	* Trees.
2304	*/
2305	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
2306
2307	/*
2308	* Ram ranges.
2309	*/
2310	if (pVM->pgm.s.pRamRangesXR3)
2311	{
2312	/* Update the pSelfRC pointers and relink them. */
2313	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2314	if (!(pCur->fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2315	pCur->pSelfRC = MMHyperCCToRC(pVM, pCur);
2316	pgmR3PhysRelinkRamRanges(pVM);
2317
2318	/* Flush the RC TLB. */
2319	for (unsigned i = 0; i < PGM_RAMRANGE_TLB_ENTRIES; i++)
2320	pVM->pgm.s.apRamRangesTlbRC[i] = NIL_RTRCPTR;
2321	}
2322
2323	/*
2324	* Update the pSelfRC pointer of the MMIO2 ram ranges since they might not
2325	* be mapped and thus not included in the above exercise.
2326	*/
2327	for (PPGMMMIO2RANGE pCur = pVM->pgm.s.pMmio2RangesR3; pCur; pCur = pCur->pNextR3)
2328	if (!(pCur->RamRange.fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2329	pCur->RamRange.pSelfRC = MMHyperCCToRC(pVM, &pCur->RamRange);
2330
2331	/*
2332	* Update the two page directories with all page table mappings.
2333	* (One or more of them have changed, that's why we're here.)
2334	*/
2335	pVM->pgm.s.pMappingsRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pMappingsR3);
2336	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur->pNextR3; pCur = pCur->pNextR3)
2337	pCur->pNextRC = MMHyperR3ToRC(pVM, pCur->pNextR3);
2338
2339	/* Relocate GC addresses of Page Tables. */
2340	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
2341	{
2342	for (RTHCUINT i = 0; i < pCur->cPTs; i++)
2343	{
2344	pCur->aPTs[i].pPTRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].pPTR3);
2345	pCur->aPTs[i].paPaePTsRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].paPaePTsR3);
2346	}
2347	}
2348
2349	/*
2350	* Dynamic page mapping area.
2351	*/
2352	pVM->pgm.s.paDynPageMap32BitPTEsGC += offDelta;
2353	pVM->pgm.s.paDynPageMapPaePTEsGC += offDelta;
2354	pVM->pgm.s.pbDynPageMapBaseGC += offDelta;
2355
2356	if (pVM->pgm.s.pRCDynMap)
2357	{
2358	pVM->pgm.s.pRCDynMap += offDelta;
2359	PPGMRCDYNMAP pDynMap = (PPGMRCDYNMAP)MMHyperRCToCC(pVM, pVM->pgm.s.pRCDynMap);
2360
2361	pDynMap->paPages += offDelta;
2362	PPGMRCDYNMAPENTRY paPages = (PPGMRCDYNMAPENTRY)MMHyperRCToCC(pVM, pDynMap->paPages);
2363
2364	for (uint32_t iPage = 0; iPage < pDynMap->cPages; iPage++)
2365	{
2366	paPages[iPage].pvPage += offDelta;
2367	paPages[iPage].uPte.pLegacy += offDelta;
2368	paPages[iPage].uPte.pPae += offDelta;
2369	}
2370	}
2371
2372	/*
2373	* The Zero page.
2374	*/
2375	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
2376	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
2377	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR \|\| !VMMIsHwVirtExtForced(pVM));
2378	#else
2379	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR);
2380	#endif
2381
2382	/*
2383	* Physical and virtual handlers.
2384	*/
2385	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3RelocatePhysHandler, &offDelta);
2386	pVM->pgm.s.pLastPhysHandlerRC = NIL_RTRCPTR;
2387	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3RelocateVirtHandler, &offDelta);
2388	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3RelocateHyperVirtHandler, &offDelta);
2389
2390	/*
2391	* The page pool.
2392	*/
2393	pgmR3PoolRelocate(pVM);
2394
2395	#ifdef VBOX_WITH_STATISTICS
2396	/*
2397	* Statistics.
2398	*/
2399	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->pgm.s.pStatsR3);
2400	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2401	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->aCpus[iCpu].pgm.s.pStatsR3);
2402	#endif
2403	}
2404
2405
2406	/**
2407	* Callback function for relocating a physical access handler.
2408	*
2409	* @returns 0 (continue enum)
2410	* @param pNode Pointer to a PGMPHYSHANDLER node.
2411	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2412	* not certain the delta will fit in a void pointer for all possible configs.
2413	*/
2414	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser)
2415	{
2416	PPGMPHYSHANDLER pHandler = (PPGMPHYSHANDLER)pNode;
2417	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2418	if (pHandler->pfnHandlerRC)
2419	pHandler->pfnHandlerRC += offDelta;
2420	if (pHandler->pvUserRC >= 0x10000)
2421	pHandler->pvUserRC += offDelta;
2422	return 0;
2423	}
2424
2425
2426	/**
2427	* Callback function for relocating a virtual access handler.
2428	*
2429	* @returns 0 (continue enum)
2430	* @param pNode Pointer to a PGMVIRTHANDLER node.
2431	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2432	* not certain the delta will fit in a void pointer for all possible configs.
2433	*/
2434	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2435	{
2436	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2437	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2438	Assert( pHandler->enmType == PGMVIRTHANDLERTYPE_ALL
2439	\|\| pHandler->enmType == PGMVIRTHANDLERTYPE_WRITE);
2440	Assert(pHandler->pfnHandlerRC);
2441	pHandler->pfnHandlerRC += offDelta;
2442	return 0;
2443	}
2444
2445
2446	/**
2447	* Callback function for relocating a virtual access handler for the hypervisor mapping.
2448	*
2449	* @returns 0 (continue enum)
2450	* @param pNode Pointer to a PGMVIRTHANDLER node.
2451	* @param pvUser Pointer to the offDelta. This is a pointer to the delta since we're
2452	* not certain the delta will fit in a void pointer for all possible configs.
2453	*/
2454	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2455	{
2456	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2457	RTGCINTPTR offDelta = *(PRTGCINTPTR)pvUser;
2458	Assert(pHandler->enmType == PGMVIRTHANDLERTYPE_HYPERVISOR);
2459	Assert(pHandler->pfnHandlerRC);
2460	pHandler->pfnHandlerRC += offDelta;
2461	return 0;
2462	}
2463
2464
2465	/**
2466	* Resets a virtual CPU when unplugged.
2467	*
2468	* @param pVM Pointer to the VM.
2469	* @param pVCpu Pointer to the VMCPU.
2470	*/
2471	VMMR3DECL(void) PGMR3ResetCpu(PVM pVM, PVMCPU pVCpu)
2472	{
2473	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2474	AssertRC(rc);
2475
2476	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2477	AssertRC(rc);
2478
2479	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2480
2481	pgmR3PoolResetUnpluggedCpu(pVM, pVCpu);
2482
2483	/*
2484	* Re-init other members.
2485	*/
2486	pVCpu->pgm.s.fA20Enabled = true;
2487	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
2488
2489	/*
2490	* Clear the FFs PGM owns.
2491	*/
2492	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2493	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2494	}
2495
2496
2497	/**
2498	* The VM is being reset.
2499	*
2500	* For the PGM component this means that any PD write monitors
2501	* needs to be removed.
2502	*
2503	* @param pVM Pointer to the VM.
2504	*/
2505	VMMR3DECL(void) PGMR3Reset(PVM pVM)
2506	{
2507	int rc;
2508
2509	LogFlow(("PGMR3Reset:\n"));
2510	VM_ASSERT_EMT(pVM);
2511
2512	pgmLock(pVM);
2513
2514	/*
2515	* Unfix any fixed mappings and disable CR3 monitoring.
2516	*/
2517	pVM->pgm.s.fMappingsFixed = false;
2518	pVM->pgm.s.fMappingsFixedRestored = false;
2519	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
2520	pVM->pgm.s.cbMappingFixed = 0;
2521
2522	/*
2523	* Exit the guest paging mode before the pgm pool gets reset.
2524	* Important to clean up the amd64 case.
2525	*/
2526	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2527	{
2528	PVMCPU pVCpu = &pVM->aCpus[i];
2529	rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2530	AssertRC(rc);
2531	}
2532
2533	#ifdef DEBUG
2534	DBGFR3_INFO_LOG(pVM, "mappings", NULL);
2535	DBGFR3_INFO_LOG(pVM, "handlers", "all nostat");
2536	#endif
2537
2538	/*
2539	* Switch mode back to real mode. (before resetting the pgm pool!)
2540	*/
2541	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2542	{
2543	PVMCPU pVCpu = &pVM->aCpus[i];
2544
2545	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2546	AssertRC(rc);
2547
2548	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2549	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cA20Changes);
2550	}
2551
2552	/*
2553	* Reset the shadow page pool.
2554	*/
2555	pgmR3PoolReset(pVM);
2556
2557	/*
2558	* Re-init various other members and clear the FFs that PGM owns.
2559	*/
2560	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2561	{
2562	PVMCPU pVCpu = &pVM->aCpus[i];
2563
2564	pVCpu->pgm.s.fGst32BitPageSizeExtension = false;
2565	PGMNotifyNxeChanged(pVCpu, false);
2566
2567	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2568	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2569
2570	if (!pVCpu->pgm.s.fA20Enabled)
2571	{
2572	pVCpu->pgm.s.fA20Enabled = true;
2573	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
2574	#ifdef PGM_WITH_A20
2575	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
2576	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2577	pgmR3RefreshShadowModeAfterA20Change(pVCpu);
2578	HMFlushTLB(pVCpu);
2579	#endif
2580	}
2581	}
2582
2583	/*
2584	* Reset (zero) RAM and shadow ROM pages.
2585	*/
2586	rc = pgmR3PhysRamReset(pVM);
2587	if (RT_SUCCESS(rc))
2588	rc = pgmR3PhysRomReset(pVM);
2589
2590
2591	pgmUnlock(pVM);
2592	AssertReleaseRC(rc);
2593	}
2594
2595
2596	#ifdef VBOX_STRICT
2597	/**
2598	* VM state change callback for clearing fNoMorePhysWrites after
2599	* a snapshot has been created.
2600	*/
2601	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PUVM pUVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
2602	{
2603	if ( enmState == VMSTATE_RUNNING
2604	\|\| enmState == VMSTATE_RESUMING)
2605	pUVM->pVM->pgm.s.fNoMorePhysWrites = false;
2606	NOREF(enmOldState); NOREF(pvUser);
2607	}
2608	#endif
2609
2610	/**
2611	* Private API to reset fNoMorePhysWrites.
2612	*/
2613	VMMR3DECL(void) PGMR3ResetNoMorePhysWritesFlag(PVM pVM)
2614	{
2615	pVM->pgm.s.fNoMorePhysWrites = false;
2616	}
2617
2618	/**
2619	* Terminates the PGM.
2620	*
2621	* @returns VBox status code.
2622	* @param pVM Pointer to VM structure.
2623	*/
2624	VMMR3DECL(int) PGMR3Term(PVM pVM)
2625	{
2626	/* Must free shared pages here. */
2627	pgmLock(pVM);
2628	pgmR3PhysRamTerm(pVM);
2629	pgmR3PhysRomTerm(pVM);
2630	pgmUnlock(pVM);
2631
2632	PGMDeregisterStringFormatTypes();
2633	return PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
2634	}
2635
2636
2637	/**
2638	* Show paging mode.
2639	*
2640	* @param pVM Pointer to the VM.
2641	* @param pHlp The info helpers.
2642	* @param pszArgs "all" (default), "guest", "shadow" or "host".
2643	*/
2644	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2645	{
2646	/* digest argument. */
2647	bool fGuest, fShadow, fHost;
2648	if (pszArgs)
2649	pszArgs = RTStrStripL(pszArgs);
2650	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
2651	fShadow = fHost = fGuest = true;
2652	else
2653	{
2654	fShadow = fHost = fGuest = false;
2655	if (strstr(pszArgs, "guest"))
2656	fGuest = true;
2657	if (strstr(pszArgs, "shadow"))
2658	fShadow = true;
2659	if (strstr(pszArgs, "host"))
2660	fHost = true;
2661	}
2662
2663	/** @todo SMP support! */
2664	/* print info. */
2665	if (fGuest)
2666	pHlp->pfnPrintf(pHlp, "Guest paging mode: %s (changed %RU64 times), A20 %s (changed %RU64 times)\n",
2667	PGMGetModeName(pVM->aCpus[0].pgm.s.enmGuestMode), pVM->aCpus[0].pgm.s.cGuestModeChanges.c,
2668	pVM->aCpus[0].pgm.s.fA20Enabled ? "enabled" : "disabled", pVM->aCpus[0].pgm.s.cA20Changes.c);
2669	if (fShadow)
2670	pHlp->pfnPrintf(pHlp, "Shadow paging mode: %s\n", PGMGetModeName(pVM->aCpus[0].pgm.s.enmShadowMode));
2671	if (fHost)
2672	{
2673	const char *psz;
2674	switch (pVM->pgm.s.enmHostMode)
2675	{
2676	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
2677	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
2678	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
2679	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
2680	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
2681	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
2682	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
2683	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
2684	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
2685	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
2686	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
2687	default: psz = "unknown"; break;
2688	}
2689	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
2690	}
2691	}
2692
2693
2694	/**
2695	* Dump registered MMIO ranges to the log.
2696	*
2697	* @param pVM Pointer to the VM.
2698	* @param pHlp The info helpers.
2699	* @param pszArgs Arguments, ignored.
2700	*/
2701	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2702	{
2703	NOREF(pszArgs);
2704	pHlp->pfnPrintf(pHlp,
2705	"RAM ranges (pVM=%p)\n"
2706	"%.s %.s\n",
2707	pVM,
2708	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
2709	sizeof(RTHCPTR) * 2, "pvHC ");
2710
2711	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2712	pHlp->pfnPrintf(pHlp,
2713	"%RGp-%RGp %RHv %s\n",
2714	pCur->GCPhys,
2715	pCur->GCPhysLast,
2716	pCur->pvR3,
2717	pCur->pszDesc);
2718	}
2719
2720
2721	/**
2722	* Dump the page directory to the log.
2723	*
2724	* @param pVM Pointer to the VM.
2725	* @param pHlp The info helpers.
2726	* @param pszArgs Arguments, ignored.
2727	*/
2728	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2729	{
2730	/** @todo SMP support!! */
2731	PVMCPU pVCpu = &pVM->aCpus[0];
2732
2733	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
2734	/* Big pages supported? */
2735	const bool fPSE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PSE);
2736
2737	/* Global pages supported? */
2738	const bool fPGE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE);
2739
2740	NOREF(pszArgs);
2741
2742	/*
2743	* Get page directory addresses.
2744	*/
2745	pgmLock(pVM);
2746	PX86PD pPDSrc = pgmGstGet32bitPDPtr(pVCpu);
2747	Assert(pPDSrc);
2748
2749	/*
2750	* Iterate the page directory.
2751	*/
2752	for (unsigned iPD = 0; iPD < RT_ELEMENTS(pPDSrc->a); iPD++)
2753	{
2754	X86PDE PdeSrc = pPDSrc->a[iPD];
2755	if (PdeSrc.n.u1Present)
2756	{
2757	if (PdeSrc.b.u1Size && fPSE)
2758	pHlp->pfnPrintf(pHlp,
2759	"%04X - %RGp P=%d U=%d RW=%d G=%d - BIG\n",
2760	iPD,
2761	pgmGstGet4MBPhysPage(pVM, PdeSrc),
2762	PdeSrc.b.u1Present, PdeSrc.b.u1User, PdeSrc.b.u1Write, PdeSrc.b.u1Global && fPGE);
2763	else
2764	pHlp->pfnPrintf(pHlp,
2765	"%04X - %RGp P=%d U=%d RW=%d [G=%d]\n",
2766	iPD,
2767	(RTGCPHYS)(PdeSrc.u & X86_PDE_PG_MASK),
2768	PdeSrc.n.u1Present, PdeSrc.n.u1User, PdeSrc.n.u1Write, PdeSrc.b.u1Global && fPGE);
2769	}
2770	}
2771	pgmUnlock(pVM);
2772	}
2773
2774
2775	/**
2776	* Service a VMMCALLRING3_PGM_LOCK call.
2777	*
2778	* @returns VBox status code.
2779	* @param pVM Pointer to the VM.
2780	*/
2781	VMMR3DECL(int) PGMR3LockCall(PVM pVM)
2782	{
2783	int rc = PDMR3CritSectEnterEx(&pVM->pgm.s.CritSectX, true /* fHostCall */);
2784	AssertRC(rc);
2785	return rc;
2786	}
2787
2788
2789	/**
2790	* Converts a PGMMODE value to a PGM_TYPE_* \#define.
2791	*
2792	* @returns PGM_TYPE_*.
2793	* @param pgmMode The mode value to convert.
2794	*/
2795	DECLINLINE(unsigned) pgmModeToType(PGMMODE pgmMode)
2796	{
2797	switch (pgmMode)
2798	{
2799	case PGMMODE_REAL: return PGM_TYPE_REAL;
2800	case PGMMODE_PROTECTED: return PGM_TYPE_PROT;
2801	case PGMMODE_32_BIT: return PGM_TYPE_32BIT;
2802	case PGMMODE_PAE:
2803	case PGMMODE_PAE_NX: return PGM_TYPE_PAE;
2804	case PGMMODE_AMD64:
2805	case PGMMODE_AMD64_NX: return PGM_TYPE_AMD64;
2806	case PGMMODE_NESTED: return PGM_TYPE_NESTED;
2807	case PGMMODE_EPT: return PGM_TYPE_EPT;
2808	default:
2809	AssertFatalMsgFailed(("pgmMode=%d\n", pgmMode));
2810	}
2811	}
2812
2813
2814	/**
2815	* Gets the index into the paging mode data array of a SHW+GST mode.
2816	*
2817	* @returns PGM::paPagingData index.
2818	* @param uShwType The shadow paging mode type.
2819	* @param uGstType The guest paging mode type.
2820	*/
2821	DECLINLINE(unsigned) pgmModeDataIndex(unsigned uShwType, unsigned uGstType)
2822	{
2823	Assert(uShwType >= PGM_TYPE_32BIT && uShwType <= PGM_TYPE_MAX);
2824	Assert(uGstType >= PGM_TYPE_REAL && uGstType <= PGM_TYPE_AMD64);
2825	return (uShwType - PGM_TYPE_32BIT) * (PGM_TYPE_AMD64 - PGM_TYPE_REAL + 1)
2826	+ (uGstType - PGM_TYPE_REAL);
2827	}
2828
2829
2830	/**
2831	* Gets the index into the paging mode data array of a SHW+GST mode.
2832	*
2833	* @returns PGM::paPagingData index.
2834	* @param enmShw The shadow paging mode.
2835	* @param enmGst The guest paging mode.
2836	*/
2837	DECLINLINE(unsigned) pgmModeDataIndexByMode(PGMMODE enmShw, PGMMODE enmGst)
2838	{
2839	Assert(enmShw >= PGMMODE_32_BIT && enmShw <= PGMMODE_MAX);
2840	Assert(enmGst > PGMMODE_INVALID && enmGst < PGMMODE_MAX);
2841	return pgmModeDataIndex(pgmModeToType(enmShw), pgmModeToType(enmGst));
2842	}
2843
2844
2845	/**
2846	* Calculates the max data index.
2847	* @returns The number of entries in the paging data array.
2848	*/
2849	DECLINLINE(unsigned) pgmModeDataMaxIndex(void)
2850	{
2851	return pgmModeDataIndex(PGM_TYPE_MAX, PGM_TYPE_AMD64) + 1;
2852	}
2853
2854
2855	/**
2856	* Initializes the paging mode data kept in PGM::paModeData.
2857	*
2858	* @param pVM Pointer to the VM.
2859	* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
2860	* This is used early in the init process to avoid trouble with PDM
2861	* not being initialized yet.
2862	*/
2863	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0)
2864	{
2865	PPGMMODEDATA pModeData;
2866	int rc;
2867
2868	/*
2869	* Allocate the array on the first call.
2870	*/
2871	if (!pVM->pgm.s.paModeData)
2872	{
2873	pVM->pgm.s.paModeData = (PPGMMODEDATA)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMMODEDATA) * pgmModeDataMaxIndex());
2874	AssertReturn(pVM->pgm.s.paModeData, VERR_NO_MEMORY);
2875	}
2876
2877	/*
2878	* Initialize the array entries.
2879	*/
2880	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_REAL)];
2881	pModeData->uShwType = PGM_TYPE_32BIT;
2882	pModeData->uGstType = PGM_TYPE_REAL;
2883	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2884	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2885	rc = PGM_BTH_NAME_32BIT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2886
2887	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGMMODE_PROTECTED)];
2888	pModeData->uShwType = PGM_TYPE_32BIT;
2889	pModeData->uGstType = PGM_TYPE_PROT;
2890	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2891	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2892	rc = PGM_BTH_NAME_32BIT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2893
2894	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_32BIT)];
2895	pModeData->uShwType = PGM_TYPE_32BIT;
2896	pModeData->uGstType = PGM_TYPE_32BIT;
2897	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2898	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2899	rc = PGM_BTH_NAME_32BIT_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2900
2901	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_REAL)];
2902	pModeData->uShwType = PGM_TYPE_PAE;
2903	pModeData->uGstType = PGM_TYPE_REAL;
2904	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2905	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2906	rc = PGM_BTH_NAME_PAE_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2907
2908	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PROT)];
2909	pModeData->uShwType = PGM_TYPE_PAE;
2910	pModeData->uGstType = PGM_TYPE_PROT;
2911	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2912	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2913	rc = PGM_BTH_NAME_PAE_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2914
2915	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_32BIT)];
2916	pModeData->uShwType = PGM_TYPE_PAE;
2917	pModeData->uGstType = PGM_TYPE_32BIT;
2918	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2919	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2920	rc = PGM_BTH_NAME_PAE_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2921
2922	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PAE)];
2923	pModeData->uShwType = PGM_TYPE_PAE;
2924	pModeData->uGstType = PGM_TYPE_PAE;
2925	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2926	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2927	rc = PGM_BTH_NAME_PAE_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2928
2929	#ifdef VBOX_WITH_64_BITS_GUESTS
2930	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_AMD64, PGM_TYPE_AMD64)];
2931	pModeData->uShwType = PGM_TYPE_AMD64;
2932	pModeData->uGstType = PGM_TYPE_AMD64;
2933	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2934	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2935	rc = PGM_BTH_NAME_AMD64_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2936	#endif
2937
2938	/* The nested paging mode. */
2939	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_REAL)];
2940	pModeData->uShwType = PGM_TYPE_NESTED;
2941	pModeData->uGstType = PGM_TYPE_REAL;
2942	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2943	rc = PGM_BTH_NAME_NESTED_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2944
2945	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGMMODE_PROTECTED)];
2946	pModeData->uShwType = PGM_TYPE_NESTED;
2947	pModeData->uGstType = PGM_TYPE_PROT;
2948	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2949	rc = PGM_BTH_NAME_NESTED_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2950
2951	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_32BIT)];
2952	pModeData->uShwType = PGM_TYPE_NESTED;
2953	pModeData->uGstType = PGM_TYPE_32BIT;
2954	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2955	rc = PGM_BTH_NAME_NESTED_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2956
2957	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_PAE)];
2958	pModeData->uShwType = PGM_TYPE_NESTED;
2959	pModeData->uGstType = PGM_TYPE_PAE;
2960	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2961	rc = PGM_BTH_NAME_NESTED_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2962
2963	#ifdef VBOX_WITH_64_BITS_GUESTS
2964	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2965	pModeData->uShwType = PGM_TYPE_NESTED;
2966	pModeData->uGstType = PGM_TYPE_AMD64;
2967	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2968	rc = PGM_BTH_NAME_NESTED_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2969	#endif
2970
2971	/* The shadow part of the nested callback mode depends on the host paging mode (AMD-V only). */
2972	switch (pVM->pgm.s.enmHostMode)
2973	{
2974	#if HC_ARCH_BITS == 32
2975	case SUPPAGINGMODE_32_BIT:
2976	case SUPPAGINGMODE_32_BIT_GLOBAL:
2977	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
2978	{
2979	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2980	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2981	}
2982	# ifdef VBOX_WITH_64_BITS_GUESTS
2983	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2984	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2985	# endif
2986	break;
2987
2988	case SUPPAGINGMODE_PAE:
2989	case SUPPAGINGMODE_PAE_NX:
2990	case SUPPAGINGMODE_PAE_GLOBAL:
2991	case SUPPAGINGMODE_PAE_GLOBAL_NX:
2992	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
2993	{
2994	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
2995	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2996	}
2997	# ifdef VBOX_WITH_64_BITS_GUESTS
2998	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
2999	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3000	# endif
3001	break;
3002	#endif /* HC_ARCH_BITS == 32 */
3003
3004	#if HC_ARCH_BITS == 64 \|\| defined(RT_OS_DARWIN)
3005	case SUPPAGINGMODE_AMD64:
3006	case SUPPAGINGMODE_AMD64_GLOBAL:
3007	case SUPPAGINGMODE_AMD64_NX:
3008	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3009	# ifdef VBOX_WITH_64_BITS_GUESTS
3010	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_AMD64; i++)
3011	# else
3012	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3013	# endif
3014	{
3015	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3016	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3017	}
3018	break;
3019	#endif /* HC_ARCH_BITS == 64 \|\| RT_OS_DARWIN */
3020
3021	default:
3022	AssertFailed();
3023	break;
3024	}
3025
3026	/* Extended paging (EPT) / Intel VT-x */
3027	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_REAL)];
3028	pModeData->uShwType = PGM_TYPE_EPT;
3029	pModeData->uGstType = PGM_TYPE_REAL;
3030	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3031	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3032	rc = PGM_BTH_NAME_EPT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3033
3034	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PROT)];
3035	pModeData->uShwType = PGM_TYPE_EPT;
3036	pModeData->uGstType = PGM_TYPE_PROT;
3037	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3038	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3039	rc = PGM_BTH_NAME_EPT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3040
3041	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_32BIT)];
3042	pModeData->uShwType = PGM_TYPE_EPT;
3043	pModeData->uGstType = PGM_TYPE_32BIT;
3044	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3045	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3046	rc = PGM_BTH_NAME_EPT_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3047
3048	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PAE)];
3049	pModeData->uShwType = PGM_TYPE_EPT;
3050	pModeData->uGstType = PGM_TYPE_PAE;
3051	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3052	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3053	rc = PGM_BTH_NAME_EPT_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3054
3055	#ifdef VBOX_WITH_64_BITS_GUESTS
3056	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_AMD64)];
3057	pModeData->uShwType = PGM_TYPE_EPT;
3058	pModeData->uGstType = PGM_TYPE_AMD64;
3059	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3060	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3061	rc = PGM_BTH_NAME_EPT_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3062	#endif
3063	return VINF_SUCCESS;
3064	}
3065
3066
3067	/**
3068	* Switch to different (or relocated in the relocate case) mode data.
3069	*
3070	* @param pVM Pointer to the VM.
3071	* @param pVCpu Pointer to the VMCPU.
3072	* @param enmShw The shadow paging mode.
3073	* @param enmGst The guest paging mode.
3074	*/
3075	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst)
3076	{
3077	PPGMMODEDATA pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndexByMode(enmShw, enmGst)];
3078
3079	Assert(pModeData->uGstType == pgmModeToType(enmGst));
3080	Assert(pModeData->uShwType == pgmModeToType(enmShw));
3081
3082	/* shadow */
3083	pVCpu->pgm.s.pfnR3ShwRelocate = pModeData->pfnR3ShwRelocate;
3084	pVCpu->pgm.s.pfnR3ShwExit = pModeData->pfnR3ShwExit;
3085	pVCpu->pgm.s.pfnR3ShwGetPage = pModeData->pfnR3ShwGetPage;
3086	Assert(pVCpu->pgm.s.pfnR3ShwGetPage);
3087	pVCpu->pgm.s.pfnR3ShwModifyPage = pModeData->pfnR3ShwModifyPage;
3088
3089	pVCpu->pgm.s.pfnRCShwGetPage = pModeData->pfnRCShwGetPage;
3090	pVCpu->pgm.s.pfnRCShwModifyPage = pModeData->pfnRCShwModifyPage;
3091
3092	pVCpu->pgm.s.pfnR0ShwGetPage = pModeData->pfnR0ShwGetPage;
3093	pVCpu->pgm.s.pfnR0ShwModifyPage = pModeData->pfnR0ShwModifyPage;
3094
3095
3096	/* guest */
3097	pVCpu->pgm.s.pfnR3GstRelocate = pModeData->pfnR3GstRelocate;
3098	pVCpu->pgm.s.pfnR3GstExit = pModeData->pfnR3GstExit;
3099	pVCpu->pgm.s.pfnR3GstGetPage = pModeData->pfnR3GstGetPage;
3100	Assert(pVCpu->pgm.s.pfnR3GstGetPage);
3101	pVCpu->pgm.s.pfnR3GstModifyPage = pModeData->pfnR3GstModifyPage;
3102	pVCpu->pgm.s.pfnR3GstGetPDE = pModeData->pfnR3GstGetPDE;
3103	pVCpu->pgm.s.pfnRCGstGetPage = pModeData->pfnRCGstGetPage;
3104	pVCpu->pgm.s.pfnRCGstModifyPage = pModeData->pfnRCGstModifyPage;
3105	pVCpu->pgm.s.pfnRCGstGetPDE = pModeData->pfnRCGstGetPDE;
3106	pVCpu->pgm.s.pfnR0GstGetPage = pModeData->pfnR0GstGetPage;
3107	pVCpu->pgm.s.pfnR0GstModifyPage = pModeData->pfnR0GstModifyPage;
3108	pVCpu->pgm.s.pfnR0GstGetPDE = pModeData->pfnR0GstGetPDE;
3109
3110	/* both */
3111	pVCpu->pgm.s.pfnR3BthRelocate = pModeData->pfnR3BthRelocate;
3112	pVCpu->pgm.s.pfnR3BthInvalidatePage = pModeData->pfnR3BthInvalidatePage;
3113	pVCpu->pgm.s.pfnR3BthSyncCR3 = pModeData->pfnR3BthSyncCR3;
3114	Assert(pVCpu->pgm.s.pfnR3BthSyncCR3);
3115	pVCpu->pgm.s.pfnR3BthPrefetchPage = pModeData->pfnR3BthPrefetchPage;
3116	pVCpu->pgm.s.pfnR3BthVerifyAccessSyncPage = pModeData->pfnR3BthVerifyAccessSyncPage;
3117	#ifdef VBOX_STRICT
3118	pVCpu->pgm.s.pfnR3BthAssertCR3 = pModeData->pfnR3BthAssertCR3;
3119	#endif
3120	pVCpu->pgm.s.pfnR3BthMapCR3 = pModeData->pfnR3BthMapCR3;
3121	pVCpu->pgm.s.pfnR3BthUnmapCR3 = pModeData->pfnR3BthUnmapCR3;
3122
3123	pVCpu->pgm.s.pfnRCBthTrap0eHandler = pModeData->pfnRCBthTrap0eHandler;
3124	pVCpu->pgm.s.pfnRCBthInvalidatePage = pModeData->pfnRCBthInvalidatePage;
3125	pVCpu->pgm.s.pfnRCBthSyncCR3 = pModeData->pfnRCBthSyncCR3;
3126	pVCpu->pgm.s.pfnRCBthPrefetchPage = pModeData->pfnRCBthPrefetchPage;
3127	pVCpu->pgm.s.pfnRCBthVerifyAccessSyncPage = pModeData->pfnRCBthVerifyAccessSyncPage;
3128	#ifdef VBOX_STRICT
3129	pVCpu->pgm.s.pfnRCBthAssertCR3 = pModeData->pfnRCBthAssertCR3;
3130	#endif
3131	pVCpu->pgm.s.pfnRCBthMapCR3 = pModeData->pfnRCBthMapCR3;
3132	pVCpu->pgm.s.pfnRCBthUnmapCR3 = pModeData->pfnRCBthUnmapCR3;
3133
3134	pVCpu->pgm.s.pfnR0BthTrap0eHandler = pModeData->pfnR0BthTrap0eHandler;
3135	pVCpu->pgm.s.pfnR0BthInvalidatePage = pModeData->pfnR0BthInvalidatePage;
3136	pVCpu->pgm.s.pfnR0BthSyncCR3 = pModeData->pfnR0BthSyncCR3;
3137	pVCpu->pgm.s.pfnR0BthPrefetchPage = pModeData->pfnR0BthPrefetchPage;
3138	pVCpu->pgm.s.pfnR0BthVerifyAccessSyncPage = pModeData->pfnR0BthVerifyAccessSyncPage;
3139	#ifdef VBOX_STRICT
3140	pVCpu->pgm.s.pfnR0BthAssertCR3 = pModeData->pfnR0BthAssertCR3;
3141	#endif
3142	pVCpu->pgm.s.pfnR0BthMapCR3 = pModeData->pfnR0BthMapCR3;
3143	pVCpu->pgm.s.pfnR0BthUnmapCR3 = pModeData->pfnR0BthUnmapCR3;
3144	}
3145
3146
3147	/**
3148	* Calculates the shadow paging mode.
3149	*
3150	* @returns The shadow paging mode.
3151	* @param pVM Pointer to the VM.
3152	* @param enmGuestMode The guest mode.
3153	* @param enmHostMode The host mode.
3154	* @param enmShadowMode The current shadow mode.
3155	* @param penmSwitcher Where to store the switcher to use.
3156	* VMMSWITCHER_INVALID means no change.
3157	*/
3158	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher)
3159	{
3160	VMMSWITCHER enmSwitcher = VMMSWITCHER_INVALID;
3161	switch (enmGuestMode)
3162	{
3163	/*
3164	* When switching to real or protected mode we don't change
3165	* anything since it's likely that we'll switch back pretty soon.
3166	*
3167	* During pgmR3InitPaging we'll end up here with PGMMODE_INVALID
3168	* and is supposed to determine which shadow paging and switcher to
3169	* use during init.
3170	*/
3171	case PGMMODE_REAL:
3172	case PGMMODE_PROTECTED:
3173	if ( enmShadowMode != PGMMODE_INVALID
3174	&& !HMIsEnabled(pVM) /* always switch in hm mode! */)
3175	break; /* (no change) */
3176
3177	switch (enmHostMode)
3178	{
3179	case SUPPAGINGMODE_32_BIT:
3180	case SUPPAGINGMODE_32_BIT_GLOBAL:
3181	enmShadowMode = PGMMODE_32_BIT;
3182	enmSwitcher = VMMSWITCHER_32_TO_32;
3183	break;
3184
3185	case SUPPAGINGMODE_PAE:
3186	case SUPPAGINGMODE_PAE_NX:
3187	case SUPPAGINGMODE_PAE_GLOBAL:
3188	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3189	enmShadowMode = PGMMODE_PAE;
3190	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3191	#ifdef DEBUG_bird
3192	if (RTEnvExist("VBOX_32BIT"))
3193	{
3194	enmShadowMode = PGMMODE_32_BIT;
3195	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3196	}
3197	#endif
3198	break;
3199
3200	case SUPPAGINGMODE_AMD64:
3201	case SUPPAGINGMODE_AMD64_GLOBAL:
3202	case SUPPAGINGMODE_AMD64_NX:
3203	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3204	enmShadowMode = PGMMODE_PAE;
3205	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3206	#ifdef DEBUG_bird
3207	if (RTEnvExist("VBOX_32BIT"))
3208	{
3209	enmShadowMode = PGMMODE_32_BIT;
3210	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3211	}
3212	#endif
3213	break;
3214
3215	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3216	}
3217	break;
3218
3219	case PGMMODE_32_BIT:
3220	switch (enmHostMode)
3221	{
3222	case SUPPAGINGMODE_32_BIT:
3223	case SUPPAGINGMODE_32_BIT_GLOBAL:
3224	enmShadowMode = PGMMODE_32_BIT;
3225	enmSwitcher = VMMSWITCHER_32_TO_32;
3226	break;
3227
3228	case SUPPAGINGMODE_PAE:
3229	case SUPPAGINGMODE_PAE_NX:
3230	case SUPPAGINGMODE_PAE_GLOBAL:
3231	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3232	enmShadowMode = PGMMODE_PAE;
3233	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3234	#ifdef DEBUG_bird
3235	if (RTEnvExist("VBOX_32BIT"))
3236	{
3237	enmShadowMode = PGMMODE_32_BIT;
3238	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3239	}
3240	#endif
3241	break;
3242
3243	case SUPPAGINGMODE_AMD64:
3244	case SUPPAGINGMODE_AMD64_GLOBAL:
3245	case SUPPAGINGMODE_AMD64_NX:
3246	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3247	enmShadowMode = PGMMODE_PAE;
3248	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3249	#ifdef DEBUG_bird
3250	if (RTEnvExist("VBOX_32BIT"))
3251	{
3252	enmShadowMode = PGMMODE_32_BIT;
3253	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3254	}
3255	#endif
3256	break;
3257
3258	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3259	}
3260	break;
3261
3262	case PGMMODE_PAE:
3263	case PGMMODE_PAE_NX: /** @todo This might require more switchers and guest+both modes. */
3264	switch (enmHostMode)
3265	{
3266	case SUPPAGINGMODE_32_BIT:
3267	case SUPPAGINGMODE_32_BIT_GLOBAL:
3268	enmShadowMode = PGMMODE_PAE;
3269	enmSwitcher = VMMSWITCHER_32_TO_PAE;
3270	break;
3271
3272	case SUPPAGINGMODE_PAE:
3273	case SUPPAGINGMODE_PAE_NX:
3274	case SUPPAGINGMODE_PAE_GLOBAL:
3275	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3276	enmShadowMode = PGMMODE_PAE;
3277	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3278	break;
3279
3280	case SUPPAGINGMODE_AMD64:
3281	case SUPPAGINGMODE_AMD64_GLOBAL:
3282	case SUPPAGINGMODE_AMD64_NX:
3283	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3284	enmShadowMode = PGMMODE_PAE;
3285	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3286	break;
3287
3288	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3289	}
3290	break;
3291
3292	case PGMMODE_AMD64:
3293	case PGMMODE_AMD64_NX:
3294	switch (enmHostMode)
3295	{
3296	case SUPPAGINGMODE_32_BIT:
3297	case SUPPAGINGMODE_32_BIT_GLOBAL:
3298	enmShadowMode = PGMMODE_AMD64;
3299	enmSwitcher = VMMSWITCHER_32_TO_AMD64;
3300	break;
3301
3302	case SUPPAGINGMODE_PAE:
3303	case SUPPAGINGMODE_PAE_NX:
3304	case SUPPAGINGMODE_PAE_GLOBAL:
3305	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3306	enmShadowMode = PGMMODE_AMD64;
3307	enmSwitcher = VMMSWITCHER_PAE_TO_AMD64;
3308	break;
3309
3310	case SUPPAGINGMODE_AMD64:
3311	case SUPPAGINGMODE_AMD64_GLOBAL:
3312	case SUPPAGINGMODE_AMD64_NX:
3313	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3314	enmShadowMode = PGMMODE_AMD64;
3315	enmSwitcher = VMMSWITCHER_AMD64_TO_AMD64;
3316	break;
3317
3318	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3319	}
3320	break;
3321
3322
3323	default:
3324	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3325	*penmSwitcher = VMMSWITCHER_INVALID;
3326	return PGMMODE_INVALID;
3327	}
3328	/* Override the shadow mode is nested paging is active. */
3329	pVM->pgm.s.fNestedPaging = HMIsNestedPagingActive(pVM);
3330	if (pVM->pgm.s.fNestedPaging)
3331	enmShadowMode = HMGetShwPagingMode(pVM);
3332
3333	*penmSwitcher = enmSwitcher;
3334	return enmShadowMode;
3335	}
3336
3337
3338	/**
3339	* Performs the actual mode change.
3340	* This is called by PGMChangeMode and pgmR3InitPaging().
3341	*
3342	* @returns VBox status code. May suspend or power off the VM on error, but this
3343	* will trigger using FFs and not status codes.
3344	*
3345	* @param pVM Pointer to the VM.
3346	* @param pVCpu Pointer to the VMCPU.
3347	* @param enmGuestMode The new guest mode. This is assumed to be different from
3348	* the current mode.
3349	*/
3350	VMMR3DECL(int) PGMR3ChangeMode(PVM pVM, PVMCPU pVCpu, PGMMODE enmGuestMode)
3351	{
3352	#if HC_ARCH_BITS == 32
3353	bool fIsOldGuestPagingMode64Bits = (pVCpu->pgm.s.enmGuestMode >= PGMMODE_AMD64);
3354	#endif
3355	bool fIsNewGuestPagingMode64Bits = (enmGuestMode >= PGMMODE_AMD64);
3356
3357	Log(("PGMR3ChangeMode: Guest mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmGuestMode), PGMGetModeName(enmGuestMode)));
3358	STAM_REL_COUNTER_INC(&pVCpu->pgm.s.cGuestModeChanges);
3359
3360	/*
3361	* Calc the shadow mode and switcher.
3362	*/
3363	VMMSWITCHER enmSwitcher;
3364	PGMMODE enmShadowMode;
3365	enmShadowMode = pgmR3CalcShadowMode(pVM, enmGuestMode, pVM->pgm.s.enmHostMode, pVCpu->pgm.s.enmShadowMode, &enmSwitcher);
3366
3367	#ifdef VBOX_WITH_RAW_MODE
3368	if (enmSwitcher != VMMSWITCHER_INVALID)
3369	{
3370	/*
3371	* Select new switcher.
3372	*/
3373	int rc = VMMR3SelectSwitcher(pVM, enmSwitcher);
3374	if (RT_FAILURE(rc))
3375	{
3376	AssertReleaseMsgFailed(("VMMR3SelectSwitcher(%d) -> %Rrc\n", enmSwitcher, rc));
3377	return rc;
3378	}
3379	}
3380	#endif
3381
3382	/*
3383	* Exit old mode(s).
3384	*/
3385	#if HC_ARCH_BITS == 32
3386	/* The nested shadow paging mode for AMD-V does change when running 64 bits guests on 32 bits hosts; typically PAE <-> AMD64 */
3387	const bool fForceShwEnterExit = ( fIsOldGuestPagingMode64Bits != fIsNewGuestPagingMode64Bits
3388	&& enmShadowMode == PGMMODE_NESTED);
3389	#else
3390	const bool fForceShwEnterExit = false;
3391	#endif
3392	/* shadow */
3393	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3394	\|\| fForceShwEnterExit)
3395	{
3396	LogFlow(("PGMR3ChangeMode: Shadow mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode), PGMGetModeName(enmShadowMode)));
3397	if (PGM_SHW_PFN(Exit, pVCpu))
3398	{
3399	int rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3400	if (RT_FAILURE(rc))
3401	{
3402	AssertMsgFailed(("Exit failed for shadow mode %d: %Rrc\n", pVCpu->pgm.s.enmShadowMode, rc));
3403	return rc;
3404	}
3405	}
3406
3407	}
3408	else
3409	LogFlow(("PGMR3ChangeMode: Shadow mode remains: %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3410
3411	/* guest */
3412	if (PGM_GST_PFN(Exit, pVCpu))
3413	{
3414	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
3415	if (RT_FAILURE(rc))
3416	{
3417	AssertMsgFailed(("Exit failed for guest mode %d: %Rrc\n", pVCpu->pgm.s.enmGuestMode, rc));
3418	return rc;
3419	}
3420	}
3421
3422	/*
3423	* Load new paging mode data.
3424	*/
3425	pgmR3ModeDataSwitch(pVM, pVCpu, enmShadowMode, enmGuestMode);
3426
3427	/*
3428	* Enter new shadow mode (if changed).
3429	*/
3430	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3431	\|\| fForceShwEnterExit)
3432	{
3433	int rc;
3434	pVCpu->pgm.s.enmShadowMode = enmShadowMode;
3435	switch (enmShadowMode)
3436	{
3437	case PGMMODE_32_BIT:
3438	rc = PGM_SHW_NAME_32BIT(Enter)(pVCpu, false);
3439	break;
3440	case PGMMODE_PAE:
3441	case PGMMODE_PAE_NX:
3442	rc = PGM_SHW_NAME_PAE(Enter)(pVCpu, false);
3443	break;
3444	case PGMMODE_AMD64:
3445	case PGMMODE_AMD64_NX:
3446	rc = PGM_SHW_NAME_AMD64(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3447	break;
3448	case PGMMODE_NESTED:
3449	rc = PGM_SHW_NAME_NESTED(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3450	break;
3451	case PGMMODE_EPT:
3452	rc = PGM_SHW_NAME_EPT(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3453	break;
3454	case PGMMODE_REAL:
3455	case PGMMODE_PROTECTED:
3456	default:
3457	AssertReleaseMsgFailed(("enmShadowMode=%d\n", enmShadowMode));
3458	return VERR_INTERNAL_ERROR;
3459	}
3460	if (RT_FAILURE(rc))
3461	{
3462	AssertReleaseMsgFailed(("Entering enmShadowMode=%d failed: %Rrc\n", enmShadowMode, rc));
3463	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3464	return rc;
3465	}
3466	}
3467
3468	/*
3469	* Always flag the necessary updates
3470	*/
3471	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3472
3473	/*
3474	* Enter the new guest and shadow+guest modes.
3475	*/
3476	int rc = -1;
3477	int rc2 = -1;
3478	RTGCPHYS GCPhysCR3 = NIL_RTGCPHYS;
3479	pVCpu->pgm.s.enmGuestMode = enmGuestMode;
3480	switch (enmGuestMode)
3481	{
3482	case PGMMODE_REAL:
3483	rc = PGM_GST_NAME_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3484	switch (pVCpu->pgm.s.enmShadowMode)
3485	{
3486	case PGMMODE_32_BIT:
3487	rc2 = PGM_BTH_NAME_32BIT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3488	break;
3489	case PGMMODE_PAE:
3490	case PGMMODE_PAE_NX:
3491	rc2 = PGM_BTH_NAME_PAE_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3492	break;
3493	case PGMMODE_NESTED:
3494	rc2 = PGM_BTH_NAME_NESTED_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3495	break;
3496	case PGMMODE_EPT:
3497	rc2 = PGM_BTH_NAME_EPT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3498	break;
3499	case PGMMODE_AMD64:
3500	case PGMMODE_AMD64_NX:
3501	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3502	default: AssertFailed(); break;
3503	}
3504	break;
3505
3506	case PGMMODE_PROTECTED:
3507	rc = PGM_GST_NAME_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3508	switch (pVCpu->pgm.s.enmShadowMode)
3509	{
3510	case PGMMODE_32_BIT:
3511	rc2 = PGM_BTH_NAME_32BIT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3512	break;
3513	case PGMMODE_PAE:
3514	case PGMMODE_PAE_NX:
3515	rc2 = PGM_BTH_NAME_PAE_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3516	break;
3517	case PGMMODE_NESTED:
3518	rc2 = PGM_BTH_NAME_NESTED_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3519	break;
3520	case PGMMODE_EPT:
3521	rc2 = PGM_BTH_NAME_EPT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3522	break;
3523	case PGMMODE_AMD64:
3524	case PGMMODE_AMD64_NX:
3525	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3526	default: AssertFailed(); break;
3527	}
3528	break;
3529
3530	case PGMMODE_32_BIT:
3531	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAGE_MASK;
3532	rc = PGM_GST_NAME_32BIT(Enter)(pVCpu, GCPhysCR3);
3533	switch (pVCpu->pgm.s.enmShadowMode)
3534	{
3535	case PGMMODE_32_BIT:
3536	rc2 = PGM_BTH_NAME_32BIT_32BIT(Enter)(pVCpu, GCPhysCR3);
3537	break;
3538	case PGMMODE_PAE:
3539	case PGMMODE_PAE_NX:
3540	rc2 = PGM_BTH_NAME_PAE_32BIT(Enter)(pVCpu, GCPhysCR3);
3541	break;
3542	case PGMMODE_NESTED:
3543	rc2 = PGM_BTH_NAME_NESTED_32BIT(Enter)(pVCpu, GCPhysCR3);
3544	break;
3545	case PGMMODE_EPT:
3546	rc2 = PGM_BTH_NAME_EPT_32BIT(Enter)(pVCpu, GCPhysCR3);
3547	break;
3548	case PGMMODE_AMD64:
3549	case PGMMODE_AMD64_NX:
3550	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3551	default: AssertFailed(); break;
3552	}
3553	break;
3554
3555	case PGMMODE_PAE_NX:
3556	case PGMMODE_PAE:
3557	{
3558	uint32_t u32Dummy, u32Features;
3559
3560	CPUMGetGuestCpuId(pVCpu, 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
3561	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
3562	return VMSetRuntimeError(pVM, VMSETRTERR_FLAGS_FATAL, "PAEmode",
3563	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)"));
3564
3565	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAE_PAGE_MASK;
3566	rc = PGM_GST_NAME_PAE(Enter)(pVCpu, GCPhysCR3);
3567	switch (pVCpu->pgm.s.enmShadowMode)
3568	{
3569	case PGMMODE_PAE:
3570	case PGMMODE_PAE_NX:
3571	rc2 = PGM_BTH_NAME_PAE_PAE(Enter)(pVCpu, GCPhysCR3);
3572	break;
3573	case PGMMODE_NESTED:
3574	rc2 = PGM_BTH_NAME_NESTED_PAE(Enter)(pVCpu, GCPhysCR3);
3575	break;
3576	case PGMMODE_EPT:
3577	rc2 = PGM_BTH_NAME_EPT_PAE(Enter)(pVCpu, GCPhysCR3);
3578	break;
3579	case PGMMODE_32_BIT:
3580	case PGMMODE_AMD64:
3581	case PGMMODE_AMD64_NX:
3582	AssertMsgFailed(("Should use PAE shadow mode!\n"));
3583	default: AssertFailed(); break;
3584	}
3585	break;
3586	}
3587
3588	#ifdef VBOX_WITH_64_BITS_GUESTS
3589	case PGMMODE_AMD64_NX:
3590	case PGMMODE_AMD64:
3591	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & UINT64_C(0xfffffffffffff000); /** @todo define this mask! */
3592	rc = PGM_GST_NAME_AMD64(Enter)(pVCpu, GCPhysCR3);
3593	switch (pVCpu->pgm.s.enmShadowMode)
3594	{
3595	case PGMMODE_AMD64:
3596	case PGMMODE_AMD64_NX:
3597	rc2 = PGM_BTH_NAME_AMD64_AMD64(Enter)(pVCpu, GCPhysCR3);
3598	break;
3599	case PGMMODE_NESTED:
3600	rc2 = PGM_BTH_NAME_NESTED_AMD64(Enter)(pVCpu, GCPhysCR3);
3601	break;
3602	case PGMMODE_EPT:
3603	rc2 = PGM_BTH_NAME_EPT_AMD64(Enter)(pVCpu, GCPhysCR3);
3604	break;
3605	case PGMMODE_32_BIT:
3606	case PGMMODE_PAE:
3607	case PGMMODE_PAE_NX:
3608	AssertMsgFailed(("Should use AMD64 shadow mode!\n"));
3609	default: AssertFailed(); break;
3610	}
3611	break;
3612	#endif
3613
3614	default:
3615	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3616	rc = VERR_NOT_IMPLEMENTED;
3617	break;
3618	}
3619
3620	/* status codes. */
3621	AssertRC(rc);
3622	AssertRC(rc2);
3623	if (RT_SUCCESS(rc))
3624	{
3625	rc = rc2;
3626	if (RT_SUCCESS(rc)) /* no informational status codes. */
3627	rc = VINF_SUCCESS;
3628	}
3629
3630	/* Notify HM as well. */
3631	HMR3PagingModeChanged(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
3632	return rc;
3633	}
3634
3635
3636	/**
3637	* Called by pgmPoolFlushAllInt prior to flushing the pool.
3638	*
3639	* @returns VBox status code, fully asserted.
3640	* @param pVCpu Pointer to the VMCPU.
3641	*/
3642	int pgmR3ExitShadowModeBeforePoolFlush(PVMCPU pVCpu)
3643	{
3644	/* Unmap the old CR3 value before flushing everything. */
3645	int rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
3646	AssertRC(rc);
3647
3648	/* Exit the current shadow paging mode as well; nested paging and EPT use a root CR3 which will get flushed here. */
3649	rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3650	AssertRC(rc);
3651	Assert(pVCpu->pgm.s.pShwPageCR3R3 == NULL);
3652	return rc;
3653	}
3654
3655
3656	/**
3657	* Called by pgmPoolFlushAllInt after flushing the pool.
3658	*
3659	* @returns VBox status code, fully asserted.
3660	* @param pVM Pointer to the VM.
3661	* @param pVCpu Pointer to the VMCPU.
3662	*/
3663	int pgmR3ReEnterShadowModeAfterPoolFlush(PVM pVM, PVMCPU pVCpu)
3664	{
3665	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3666	int rc = PGMR3ChangeMode(pVM, pVCpu, PGMGetGuestMode(pVCpu));
3667	Assert(VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
3668	AssertRCReturn(rc, rc);
3669	AssertRCSuccessReturn(rc, VERR_IPE_UNEXPECTED_INFO_STATUS);
3670
3671	Assert(pVCpu->pgm.s.pShwPageCR3R3 != NULL);
3672	AssertMsg( pVCpu->pgm.s.enmShadowMode >= PGMMODE_NESTED
3673	\|\| CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu),
3674	("%RHp != %RHp %s\n", (RTHCPHYS)CPUMGetHyperCR3(pVCpu), PGMGetHyperCR3(pVCpu), PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3675	return rc;
3676	}
3677
3678
3679	/**
3680	* Called by PGMR3PhysSetA20 after changing the A20 state.
3681	*
3682	* @param pVCpu Pointer to the VMCPU.
3683	*/
3684	void pgmR3RefreshShadowModeAfterA20Change(PVMCPU pVCpu)
3685	{
3686	/** @todo Probably doing a bit too much here. */
3687	int rc = pgmR3ExitShadowModeBeforePoolFlush(pVCpu);
3688	AssertReleaseRC(rc);
3689	rc = pgmR3ReEnterShadowModeAfterPoolFlush(pVCpu->CTX_SUFF(pVM), pVCpu);
3690	AssertReleaseRC(rc);
3691	}
3692
3693
3694	#ifdef VBOX_WITH_DEBUGGER
3695
3696	/**
3697	* @callback_method_impl{FNDBGCCMD, The '.pgmerror' and '.pgmerroroff' commands.}
3698	*/
3699	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3700	{
3701	/*
3702	* Validate input.
3703	*/
3704	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3705	PVM pVM = pUVM->pVM;
3706	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 0 \|\| (cArgs == 1 && paArgs[0].enmType == DBGCVAR_TYPE_STRING));
3707
3708	if (!cArgs)
3709	{
3710	/*
3711	* Print the list of error injection locations with status.
3712	*/
3713	DBGCCmdHlpPrintf(pCmdHlp, "PGM error inject locations:\n");
3714	DBGCCmdHlpPrintf(pCmdHlp, " handy - %RTbool\n", pVM->pgm.s.fErrInjHandyPages);
3715	}
3716	else
3717	{
3718	/*
3719	* String switch on where to inject the error.
3720	*/
3721	bool const fNewState = !strcmp(pCmd->pszCmd, "pgmerror");
3722	const char *pszWhere = paArgs[0].u.pszString;
3723	if (!strcmp(pszWhere, "handy"))
3724	ASMAtomicWriteBool(&pVM->pgm.s.fErrInjHandyPages, fNewState);
3725	else
3726	return DBGCCmdHlpPrintf(pCmdHlp, "error: Invalid 'where' value: %s.\n", pszWhere);
3727	DBGCCmdHlpPrintf(pCmdHlp, "done\n");
3728	}
3729	return VINF_SUCCESS;
3730	}
3731
3732
3733	/**
3734	* @callback_method_impl{FNDBGCCMD, The '.pgmsync' command.}
3735	*/
3736	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3737	{
3738	/*
3739	* Validate input.
3740	*/
3741	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3742	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3743	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
3744	if (!pVCpu)
3745	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
3746
3747	/*
3748	* Force page directory sync.
3749	*/
3750	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3751
3752	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Forcing page directory sync.\n");
3753	if (RT_FAILURE(rc))
3754	return rc;
3755
3756	return VINF_SUCCESS;
3757	}
3758
3759	#ifdef VBOX_STRICT
3760
3761	/**
3762	* EMT callback for pgmR3CmdAssertCR3.
3763	*
3764	* @returns VBox status code.
3765	* @param pUVM The user mode VM handle.
3766	* @param pcErrors Where to return the error count.
3767	*/
3768	static DECLCALLBACK(int) pgmR3CmdAssertCR3EmtWorker(PUVM pUVM, unsigned *pcErrors)
3769	{
3770	PVM pVM = pUVM->pVM;
3771	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3772	PVMCPU pVCpu = VMMGetCpu(pVM);
3773
3774	*pcErrors = PGMAssertCR3(pVM, pVCpu, CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu));
3775
3776	return VINF_SUCCESS;
3777	}
3778
3779
3780	/**
3781	* @callback_method_impl{FNDBGCCMD, The '.pgmassertcr3' command.}
3782	*/
3783	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3784	{
3785	/*
3786	* Validate input.
3787	*/
3788	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3789	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3790
3791	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Checking shadow CR3 page tables for consistency.\n");
3792	if (RT_FAILURE(rc))
3793	return rc;
3794
3795	unsigned cErrors = 0;
3796	rc = VMR3ReqCallWaitU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp), (PFNRT)pgmR3CmdAssertCR3EmtWorker, 2, pUVM, &cErrors);
3797	if (RT_FAILURE(rc))
3798	return DBGCCmdHlpFail(pCmdHlp, pCmd, "VMR3ReqCallWaitU failed: %Rrc", rc);
3799	if (cErrors > 0)
3800	return DBGCCmdHlpFail(pCmdHlp, pCmd, "PGMAssertCR3: %u error(s)", cErrors);
3801	return DBGCCmdHlpPrintf(pCmdHlp, "PGMAssertCR3: OK\n");
3802	}
3803
3804	#endif /* VBOX_STRICT */
3805
3806	/**
3807	* @callback_method_impl{FNDBGCCMD, The '.pgmsyncalways' command.}
3808	*/
3809	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3810	{
3811	/*
3812	* Validate input.
3813	*/
3814	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3815	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3816	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
3817	if (!pVCpu)
3818	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
3819
3820	/*
3821	* Force page directory sync.
3822	*/
3823	int rc;
3824	if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
3825	{
3826	ASMAtomicAndU32(&pVCpu->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
3827	rc = DBGCCmdHlpPrintf(pCmdHlp, "Disabled permanent forced page directory syncing.\n");
3828	}
3829	else
3830	{
3831	ASMAtomicOrU32(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
3832	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3833	rc = DBGCCmdHlpPrintf(pCmdHlp, "Enabled permanent forced page directory syncing.\n");
3834	}
3835	return rc;
3836	}
3837
3838
3839	/**
3840	* @callback_method_impl{FNDBGCCMD, The '.pgmphystofile' command.}
3841	*/
3842	static DECLCALLBACK(int) pgmR3CmdPhysToFile(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3843	{
3844	/*
3845	* Validate input.
3846	*/
3847	NOREF(pCmd);
3848	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3849	PVM pVM = pUVM->pVM;
3850	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 1 \|\| cArgs == 2);
3851	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType != DBGCVAR_TYPE_STRING);
3852	if (cArgs == 2)
3853	{
3854	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, paArgs[2].enmType != DBGCVAR_TYPE_STRING);
3855	if (strcmp(paArgs[1].u.pszString, "nozero"))
3856	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid 2nd argument '%s', must be 'nozero'.\n", paArgs[1].u.pszString);
3857	}
3858	bool fIncZeroPgs = cArgs < 2;
3859
3860	/*
3861	* Open the output file and get the ram parameters.
3862	*/
3863	RTFILE hFile;
3864	int rc = RTFileOpen(&hFile, paArgs[0].u.pszString, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_WRITE);
3865	if (RT_FAILURE(rc))
3866	return DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileOpen(,'%s',) -> %Rrc.\n", paArgs[0].u.pszString, rc);
3867
3868	uint32_t cbRamHole = 0;
3869	CFGMR3QueryU32Def(CFGMR3GetRootU(pUVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
3870	uint64_t cbRam = 0;
3871	CFGMR3QueryU64Def(CFGMR3GetRootU(pUVM), "RamSize", &cbRam, 0);
3872	RTGCPHYS GCPhysEnd = cbRam + cbRamHole;
3873
3874	/*
3875	* Dump the physical memory, page by page.
3876	*/
3877	RTGCPHYS GCPhys = 0;
3878	char abZeroPg[PAGE_SIZE];
3879	RT_ZERO(abZeroPg);
3880
3881	pgmLock(pVM);
3882	for (PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesXR3;
3883	pRam && pRam->GCPhys < GCPhysEnd && RT_SUCCESS(rc);
3884	pRam = pRam->pNextR3)
3885	{
3886	/* fill the gap */
3887	if (pRam->GCPhys > GCPhys && fIncZeroPgs)
3888	{
3889	while (pRam->GCPhys > GCPhys && RT_SUCCESS(rc))
3890	{
3891	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3892	GCPhys += PAGE_SIZE;
3893	}
3894	}
3895
3896	PCPGMPAGE pPage = &pRam->aPages[0];
3897	while (GCPhys < pRam->GCPhysLast && RT_SUCCESS(rc))
3898	{
3899	if ( PGM_PAGE_IS_ZERO(pPage)
3900	\|\| PGM_PAGE_IS_BALLOONED(pPage))
3901	{
3902	if (fIncZeroPgs)
3903	{
3904	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3905	if (RT_FAILURE(rc))
3906	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3907	}
3908	}
3909	else
3910	{
3911	switch (PGM_PAGE_GET_TYPE(pPage))
3912	{
3913	case PGMPAGETYPE_RAM:
3914	case PGMPAGETYPE_ROM_SHADOW: /* trouble?? */
3915	case PGMPAGETYPE_ROM:
3916	case PGMPAGETYPE_MMIO2:
3917	{
3918	void const *pvPage;
3919	PGMPAGEMAPLOCK Lock;
3920	rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhys, &pvPage, &Lock);
3921	if (RT_SUCCESS(rc))
3922	{
3923	rc = RTFileWrite(hFile, pvPage, PAGE_SIZE, NULL);
3924	PGMPhysReleasePageMappingLock(pVM, &Lock);
3925	if (RT_FAILURE(rc))
3926	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3927	}
3928	else
3929	DBGCCmdHlpPrintf(pCmdHlp, "error: PGMPhysGCPhys2CCPtrReadOnly -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3930	break;
3931	}
3932
3933	default:
3934	AssertFailed();
3935	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
3936	case PGMPAGETYPE_MMIO:
3937	if (fIncZeroPgs)
3938	{
3939	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3940	if (RT_FAILURE(rc))
3941	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
3942	}
3943	break;
3944	}
3945	}
3946
3947
3948	/* advance */
3949	GCPhys += PAGE_SIZE;
3950	pPage++;
3951	}
3952	}
3953	pgmUnlock(pVM);
3954
3955	RTFileClose(hFile);
3956	if (RT_SUCCESS(rc))
3957	return DBGCCmdHlpPrintf(pCmdHlp, "Successfully saved physical memory to '%s'.\n", paArgs[0].u.pszString);
3958	return VINF_SUCCESS;
3959	}
3960
3961	#endif /* VBOX_WITH_DEBUGGER */
3962
3963	/**
3964	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
3965	*/
3966	typedef struct PGMCHECKINTARGS
3967	{
3968	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
3969	PPGMPHYSHANDLER pPrevPhys;
3970	PPGMVIRTHANDLER pPrevVirt;
3971	PPGMPHYS2VIRTHANDLER pPrevPhys2Virt;
3972	PVM pVM;
3973	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
3974
3975	/**
3976	* Validate a node in the physical handler tree.
3977	*
3978	* @returns 0 on if ok, other wise 1.
3979	* @param pNode The handler node.
3980	* @param pvUser pVM.
3981	*/
3982	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
3983	{
3984	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
3985	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
3986	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
3987	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3988	AssertReleaseMsg( !pArgs->pPrevPhys
3989	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
3990	("pPrevPhys=%p %RGp-%RGp %s\n"
3991	" pCur=%p %RGp-%RGp %s\n",
3992	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
3993	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
3994	pArgs->pPrevPhys = pCur;
3995	return 0;
3996	}
3997
3998
3999	/**
4000	* Validate a node in the virtual handler tree.
4001	*
4002	* @returns 0 on if ok, other wise 1.
4003	* @param pNode The handler node.
4004	* @param pvUser pVM.
4005	*/
4006	static DECLCALLBACK(int) pgmR3CheckIntegrityVirtHandlerNode(PAVLROGCPTRNODECORE pNode, void *pvUser)
4007	{
4008	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4009	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
4010	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4011	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGv-%RGv %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4012	AssertReleaseMsg( !pArgs->pPrevVirt
4013	\|\| (pArgs->fLeftToRight ? pArgs->pPrevVirt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevVirt->Core.KeyLast > pCur->Core.Key),
4014	("pPrevVirt=%p %RGv-%RGv %s\n"
4015	" pCur=%p %RGv-%RGv %s\n",
4016	pArgs->pPrevVirt, pArgs->pPrevVirt->Core.Key, pArgs->pPrevVirt->Core.KeyLast, pArgs->pPrevVirt->pszDesc,
4017	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4018	for (unsigned iPage = 0; iPage < pCur->cPages; iPage++)
4019	{
4020	AssertReleaseMsg(pCur->aPhysToVirt[iPage].offVirtHandler == -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage]),
4021	("pCur=%p %RGv-%RGv %s\n"
4022	"iPage=%d offVirtHandle=%#x expected %#x\n",
4023	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc,
4024	iPage, pCur->aPhysToVirt[iPage].offVirtHandler, -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage])));
4025	}
4026	pArgs->pPrevVirt = pCur;
4027	return 0;
4028	}
4029
4030
4031	/**
4032	* Validate a node in the virtual handler tree.
4033	*
4034	* @returns 0 on if ok, other wise 1.
4035	* @param pNode The handler node.
4036	* @param pvUser pVM.
4037	*/
4038	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysToVirtHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4039	{
4040	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4041	PPGMPHYS2VIRTHANDLER pCur = (PPGMPHYS2VIRTHANDLER)pNode;
4042	AssertReleaseMsgReturn(!((uintptr_t)pCur & 3), ("\n"), 1);
4043	AssertReleaseMsgReturn(!(pCur->offVirtHandler & 3), ("\n"), 1);
4044	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp\n", pCur, pCur->Core.Key, pCur->Core.KeyLast));
4045	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4046	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4047	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4048	" pCur=%p %RGp-%RGp\n",
4049	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4050	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4051	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4052	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4053	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4054	" pCur=%p %RGp-%RGp\n",
4055	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4056	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4057	AssertReleaseMsg((pCur->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD),
4058	("pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4059	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4060	if (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)
4061	{
4062	PPGMPHYS2VIRTHANDLER pCur2 = pCur;
4063	for (;;)
4064	{
4065	pCur2 = (PPGMPHYS2VIRTHANDLER)((intptr_t)pCur + (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK));
4066	AssertReleaseMsg(pCur2 != pCur,
4067	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4068	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4069	AssertReleaseMsg((pCur2->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == PGMPHYS2VIRTHANDLER_IN_TREE,
4070	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4071	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4072	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4073	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4074	AssertReleaseMsg((pCur2->Core.Key ^ pCur->Core.Key) < PAGE_SIZE,
4075	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4076	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4077	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4078	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4079	AssertReleaseMsg((pCur2->Core.KeyLast ^ pCur->Core.KeyLast) < PAGE_SIZE,
4080	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4081	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4082	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4083	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4084	if (!(pCur2->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK))
4085	break;
4086	}
4087	}
4088
4089	pArgs->pPrevPhys2Virt = pCur;
4090	return 0;
4091	}
4092
4093
4094	/**
4095	* Perform an integrity check on the PGM component.
4096	*
4097	* @returns VINF_SUCCESS if everything is fine.
4098	* @returns VBox error status after asserting on integrity breach.
4099	* @param pVM Pointer to the VM.
4100	*/
4101	VMMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
4102	{
4103	AssertReleaseReturn(pVM->pgm.s.offVM, VERR_INTERNAL_ERROR);
4104
4105	/*
4106	* Check the trees.
4107	*/
4108	int cErrors = 0;
4109	const static PGMCHECKINTARGS s_LeftToRight = { true, NULL, NULL, NULL, pVM };
4110	const static PGMCHECKINTARGS s_RightToLeft = { false, NULL, NULL, NULL, pVM };
4111	PGMCHECKINTARGS Args = s_LeftToRight;
4112	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4113	Args = s_RightToLeft;
4114	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4115	Args = s_LeftToRight;
4116	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4117	Args = s_RightToLeft;
4118	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4119	Args = s_LeftToRight;
4120	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4121	Args = s_RightToLeft;
4122	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4123	Args = s_LeftToRight;
4124	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, true, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4125	Args = s_RightToLeft;
4126	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, false, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4127
4128	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
4129	}
4130

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGM.cpp@ 44730

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