PGM.cpp@ 69674

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1	/* $Id: PGM.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor. (Mixing stuff here, not good?)
4	*/
5
6	/*
7	* Copyright (C) 2006-2017 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	* @sa @ref grp_pgm
22	* @subpage pg_pgm_pool
23	* @subpage 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	* Note! The intermediate memory context is also used for 64-bit guest
85	* execution on 32-bit hosts. Because we need to load 64-bit registers
86	* prior to switching to guest context, we need to be in 64-bit mode
87	* first. So, HM has some 64-bit worker routines in VMMRC.rc that get
88	* invoked via the special world switcher code in LegacyToAMD64.asm.
89	*
90	*
91	* @subsection subsec_pgm_int_gc Guest Context Mappings
92	*
93	* During assignment and relocation of a guest context mapping the intermediate
94	* memory context is used to verify the new location.
95	*
96	* Guest context mappings are currently restricted to below 4GB, for reasons
97	* of simplicity. This may change when we implement AMD64 support.
98	*
99	*
100	*
101	*
102	* @section sec_pgm_misc Misc
103	*
104	*
105	* @subsection sec_pgm_misc_A20 The A20 Gate
106	*
107	* PGM implements the A20 gate masking when translating a virtual guest address
108	* into a physical address for CPU access, i.e. PGMGstGetPage (and friends) and
109	* the code reading the guest page table entries during shadowing. The masking
110	* is done consistenly for all CPU modes, paged ones included. Large pages are
111	* also masked correctly. (On current CPUs, experiments indicates that AMD does
112	* not apply A20M in paged modes and intel only does it for the 2nd MB of
113	* memory.)
114	*
115	* The A20 gate implementation is per CPU core. It can be configured on a per
116	* core basis via the keyboard device and PC architecture device. This is
117	* probably not exactly how real CPUs do it, but SMP and A20 isn't a place where
118	* guest OSes try pushing things anyway, so who cares. (On current real systems
119	* the A20M signal is probably only sent to the boot CPU and it affects all
120	* thread and probably all cores in that package.)
121	*
122	* The keyboard device and the PC architecture device doesn't OR their A20
123	* config bits together, rather they are currently implemented such that they
124	* mirror the CPU state. So, flipping the bit in either of them will change the
125	* A20 state. (On real hardware the bits of the two devices should probably be
126	* ORed together to indicate enabled, i.e. both needs to be cleared to disable
127	* A20 masking.)
128	*
129	* The A20 state will change immediately, transmeta fashion. There is no delays
130	* due to buses, wiring or other physical stuff. (On real hardware there are
131	* normally delays, the delays differs between the two devices and probably also
132	* between chipsets and CPU generations. Note that it's said that transmeta CPUs
133	* does the change immediately like us, they apparently intercept/handles the
134	* port accesses in microcode. Neat.)
135	*
136	* @sa http://en.wikipedia.org/wiki/A20_line#The_80286_and_the_high_memory_area
137	*
138	*
139	* @subsection subsec_pgm_misc_diff Differences Between Legacy PAE and Long Mode PAE
140	*
141	* The differences between legacy PAE and long mode PAE are:
142	* -# PDPE bits 1, 2, 5 and 6 are defined differently. In leagcy mode they are
143	* all marked down as must-be-zero, while in long mode 1, 2 and 5 have the
144	* usual meanings while 6 is ignored (AMD). This means that upon switching to
145	* legacy PAE mode we'll have to clear these bits and when going to long mode
146	* they must be set. This applies to both intermediate and shadow contexts,
147	* however we don't need to do it for the intermediate one since we're
148	* executing with CR0.WP at that time.
149	* -# CR3 allows a 32-byte aligned address in legacy mode, while in long mode
150	* a page aligned one is required.
151	*
152	*
153	* @section sec_pgm_handlers Access Handlers
154	*
155	* Placeholder.
156	*
157	*
158	* @subsection sec_pgm_handlers_phys Physical Access Handlers
159	*
160	* Placeholder.
161	*
162	*
163	* @subsection sec_pgm_handlers_virt Virtual Access Handlers
164	*
165	* We currently implement three types of virtual access handlers: ALL, WRITE
166	* and HYPERVISOR (WRITE). See PGMVIRTHANDLERKIND for some more details.
167	*
168	* The HYPERVISOR access handlers is kept in a separate tree since it doesn't apply
169	* to physical pages (PGMTREES::HyperVirtHandlers) and only needs to be consulted in
170	* a special \#PF case. The ALL and WRITE are in the PGMTREES::VirtHandlers tree, the
171	* rest of this section is going to be about these handlers.
172	*
173	* We'll go thru the life cycle of a handler and try make sense of it all, don't know
174	* how successful this is gonna be...
175	*
176	* 1. A handler is registered thru the PGMR3HandlerVirtualRegister and
177	* PGMHandlerVirtualRegisterEx APIs. We check for conflicting virtual handlers
178	* and create a new node that is inserted into the AVL tree (range key). Then
179	* a full PGM resync is flagged (clear pool, sync cr3, update virtual bit of PGMPAGE).
180	*
181	* 2. The following PGMSyncCR3/SyncCR3 operation will first make invoke HandlerVirtualUpdate.
182	*
183	* 2a. HandlerVirtualUpdate will will lookup all the pages covered by virtual handlers
184	* via the current guest CR3 and update the physical page -> virtual handler
185	* translation. Needless to say, this doesn't exactly scale very well. If any changes
186	* are detected, it will flag a virtual bit update just like we did on registration.
187	* PGMPHYS pages with changes will have their virtual handler state reset to NONE.
188	*
189	* 2b. The virtual bit update process will iterate all the pages covered by all the
190	* virtual handlers and update the PGMPAGE virtual handler state to the max of all
191	* virtual handlers on that page.
192	*
193	* 2c. Back in SyncCR3 we will now flush the entire shadow page cache to make sure
194	* we don't miss any alias mappings of the monitored pages.
195	*
196	* 2d. SyncCR3 will then proceed with syncing the CR3 table.
197	*
198	* 3. \#PF(np,read) on a page in the range. This will cause it to be synced
199	* read-only and resumed if it's a WRITE handler. If it's an ALL handler we
200	* will call the handlers like in the next step. If the physical mapping has
201	* changed we will - some time in the future - perform a handler callback
202	* (optional) and update the physical -> virtual handler cache.
203	*
204	* 4. \#PF(,write) on a page in the range. This will cause the handler to
205	* be invoked.
206	*
207	* 5. The guest invalidates the page and changes the physical backing or
208	* unmaps it. This should cause the invalidation callback to be invoked
209	* (it might not yet be 100% perfect). Exactly what happens next... is
210	* this where we mess up and end up out of sync for a while?
211	*
212	* 6. The handler is deregistered by the client via PGMHandlerVirtualDeregister.
213	* We will then set all PGMPAGEs in the physical -> virtual handler cache for
214	* this handler to NONE and trigger a full PGM resync (basically the same
215	* as int step 1). Which means 2 is executed again.
216	*
217	*
218	* @subsubsection sub_sec_pgm_handler_virt_todo TODOs
219	*
220	* There is a bunch of things that needs to be done to make the virtual handlers
221	* work 100% correctly and work more efficiently.
222	*
223	* The first bit hasn't been implemented yet because it's going to slow the
224	* whole mess down even more, and besides it seems to be working reliably for
225	* our current uses. OTOH, some of the optimizations might end up more or less
226	* implementing the missing bits, so we'll see.
227	*
228	* On the optimization side, the first thing to do is to try avoid unnecessary
229	* cache flushing. Then try team up with the shadowing code to track changes
230	* in mappings by means of access to them (shadow in), updates to shadows pages,
231	* invlpg, and shadow PT discarding (perhaps).
232	*
233	* Some idea that have popped up for optimization for current and new features:
234	* - bitmap indicating where there are virtual handlers installed.
235	* (4KB => 220 pages, page 212 => covers 32-bit address space 1:1!)
236	* - Further optimize this by min/max (needs min/max avl getters).
237	* - Shadow page table entry bit (if any left)?
238	*
239	*/
240
241
242	/** @page pg_pgm_phys PGM Physical Guest Memory Management
243	*
244	*
245	* Objectives:
246	* - Guest RAM over-commitment using memory ballooning,
247	* zero pages and general page sharing.
248	* - Moving or mirroring a VM onto a different physical machine.
249	*
250	*
251	* @section sec_pgmPhys_Definitions Definitions
252	*
253	* Allocation chunk - A RTR0MemObjAllocPhysNC object and the tracking
254	* machinery associated with it.
255	*
256	*
257	*
258	*
259	* @section sec_pgmPhys_AllocPage Allocating a page.
260	*
261	* Initially we map all guest memory to the (per VM) zero page, which
262	* means that none of the read functions will cause pages to be allocated.
263	*
264	* Exception, access bit in page tables that have been shared. This must
265	* be handled, but we must also make sure PGMGst*Modify doesn't make
266	* unnecessary modifications.
267	*
268	* Allocation points:
269	* - PGMPhysSimpleWriteGCPhys and PGMPhysWrite.
270	* - Replacing a zero page mapping at \#PF.
271	* - Replacing a shared page mapping at \#PF.
272	* - ROM registration (currently MMR3RomRegister).
273	* - VM restore (pgmR3Load).
274	*
275	* For the first three it would make sense to keep a few pages handy
276	* until we've reached the max memory commitment for the VM.
277	*
278	* For the ROM registration, we know exactly how many pages we need
279	* and will request these from ring-0. For restore, we will save
280	* the number of non-zero pages in the saved state and allocate
281	* them up front. This would allow the ring-0 component to refuse
282	* the request if the isn't sufficient memory available for VM use.
283	*
284	* Btw. for both ROM and restore allocations we won't be requiring
285	* zeroed pages as they are going to be filled instantly.
286	*
287	*
288	* @section sec_pgmPhys_FreePage Freeing a page
289	*
290	* There are a few points where a page can be freed:
291	* - After being replaced by the zero page.
292	* - After being replaced by a shared page.
293	* - After being ballooned by the guest additions.
294	* - At reset.
295	* - At restore.
296	*
297	* When freeing one or more pages they will be returned to the ring-0
298	* component and replaced by the zero page.
299	*
300	* The reasoning for clearing out all the pages on reset is that it will
301	* return us to the exact same state as on power on, and may thereby help
302	* us reduce the memory load on the system. Further it might have a
303	* (temporary) positive influence on memory fragmentation (@see subsec_pgmPhys_Fragmentation).
304	*
305	* On restore, as mention under the allocation topic, pages should be
306	* freed / allocated depending on how many is actually required by the
307	* new VM state. The simplest approach is to do like on reset, and free
308	* all non-ROM pages and then allocate what we need.
309	*
310	* A measure to prevent some fragmentation, would be to let each allocation
311	* chunk have some affinity towards the VM having allocated the most pages
312	* from it. Also, try make sure to allocate from allocation chunks that
313	* are almost full. Admittedly, both these measures might work counter to
314	* our intentions and its probably not worth putting a lot of effort,
315	* cpu time or memory into this.
316	*
317	*
318	* @section sec_pgmPhys_SharePage Sharing a page
319	*
320	* The basic idea is that there there will be a idle priority kernel
321	* thread walking the non-shared VM pages hashing them and looking for
322	* pages with the same checksum. If such pages are found, it will compare
323	* them byte-by-byte to see if they actually are identical. If found to be
324	* identical it will allocate a shared page, copy the content, check that
325	* the page didn't change while doing this, and finally request both the
326	* VMs to use the shared page instead. If the page is all zeros (special
327	* checksum and byte-by-byte check) it will request the VM that owns it
328	* to replace it with the zero page.
329	*
330	* To make this efficient, we will have to make sure not to try share a page
331	* that will change its contents soon. This part requires the most work.
332	* A simple idea would be to request the VM to write monitor the page for
333	* a while to make sure it isn't modified any time soon. Also, it may
334	* make sense to skip pages that are being write monitored since this
335	* information is readily available to the thread if it works on the
336	* per-VM guest memory structures (presently called PGMRAMRANGE).
337	*
338	*
339	* @section sec_pgmPhys_Fragmentation Fragmentation Concerns and Counter Measures
340	*
341	* The pages are organized in allocation chunks in ring-0, this is a necessity
342	* if we wish to have an OS agnostic approach to this whole thing. (On Linux we
343	* could easily work on a page-by-page basis if we liked. Whether this is possible
344	* or efficient on NT I don't quite know.) Fragmentation within these chunks may
345	* become a problem as part of the idea here is that we wish to return memory to
346	* the host system.
347	*
348	* For instance, starting two VMs at the same time, they will both allocate the
349	* guest memory on-demand and if permitted their page allocations will be
350	* intermixed. Shut down one of the two VMs and it will be difficult to return
351	* any memory to the host system because the page allocation for the two VMs are
352	* mixed up in the same allocation chunks.
353	*
354	* To further complicate matters, when pages are freed because they have been
355	* ballooned or become shared/zero the whole idea is that the page is supposed
356	* to be reused by another VM or returned to the host system. This will cause
357	* allocation chunks to contain pages belonging to different VMs and prevent
358	* returning memory to the host when one of those VM shuts down.
359	*
360	* The only way to really deal with this problem is to move pages. This can
361	* either be done at VM shutdown and or by the idle priority worker thread
362	* that will be responsible for finding sharable/zero pages. The mechanisms
363	* involved for coercing a VM to move a page (or to do it for it) will be
364	* the same as when telling it to share/zero a page.
365	*
366	*
367	* @section sec_pgmPhys_Tracking Tracking Structures And Their Cost
368	*
369	* There's a difficult balance between keeping the per-page tracking structures
370	* (global and guest page) easy to use and keeping them from eating too much
371	* memory. We have limited virtual memory resources available when operating in
372	* 32-bit kernel space (on 64-bit there'll it's quite a different story). The
373	* tracking structures will be attempted designed such that we can deal with up
374	* to 32GB of memory on a 32-bit system and essentially unlimited on 64-bit ones.
375	*
376	*
377	* @subsection subsec_pgmPhys_Tracking_Kernel Kernel Space
378	*
379	* @see pg_GMM
380	*
381	* @subsection subsec_pgmPhys_Tracking_PerVM Per-VM
382	*
383	* Fixed info is the physical address of the page (HCPhys) and the page id
384	* (described above). Theoretically we'll need 48(-12) bits for the HCPhys part.
385	* Today we've restricting ourselves to 40(-12) bits because this is the current
386	* restrictions of all AMD64 implementations (I think Barcelona will up this
387	* to 48(-12) bits, not that it really matters) and I needed the bits for
388	* tracking mappings of a page. 48-12 = 36. That leaves 28 bits, which means a
389	* decent range for the page id: 2^(28+12) = 1024TB.
390	*
391	* In additions to these, we'll have to keep maintaining the page flags as we
392	* currently do. Although it wouldn't harm to optimize these quite a bit, like
393	* for instance the ROM shouldn't depend on having a write handler installed
394	* in order for it to become read-only. A RO/RW bit should be considered so
395	* that the page syncing code doesn't have to mess about checking multiple
396	* flag combinations (ROM \|\| RW handler \|\| write monitored) in order to
397	* figure out how to setup a shadow PTE. But this of course, is second
398	* priority at present. Current this requires 12 bits, but could probably
399	* be optimized to ~8.
400	*
401	* Then there's the 24 bits used to track which shadow page tables are
402	* currently mapping a page for the purpose of speeding up physical
403	* access handlers, and thereby the page pool cache. More bit for this
404	* purpose wouldn't hurt IIRC.
405	*
406	* Then there is a new bit in which we need to record what kind of page
407	* this is, shared, zero, normal or write-monitored-normal. This'll
408	* require 2 bits. One bit might be needed for indicating whether a
409	* write monitored page has been written to. And yet another one or
410	* two for tracking migration status. 3-4 bits total then.
411	*
412	* Whatever is left will can be used to record the sharabilitiy of a
413	* page. The page checksum will not be stored in the per-VM table as
414	* the idle thread will not be permitted to do modifications to it.
415	* It will instead have to keep its own working set of potentially
416	* shareable pages and their check sums and stuff.
417	*
418	* For the present we'll keep the current packing of the
419	* PGMRAMRANGE::aHCPhys to keep the changes simple, only of course,
420	* we'll have to change it to a struct with a total of 128-bits at
421	* our disposal.
422	*
423	* The initial layout will be like this:
424	* @verbatim
425	RTHCPHYS HCPhys; The current stuff.
426	63:40 Current shadow PT tracking stuff.
427	39:12 The physical page frame number.
428	11:0 The current flags.
429	uint32_t u28PageId : 28; The page id.
430	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
431	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
432	uint32_t u1Reserved : 1; Reserved for later.
433	uint32_t u32Reserved; Reserved for later, mostly sharing stats.
434	@endverbatim
435	*
436	* The final layout will be something like this:
437	* @verbatim
438	RTHCPHYS HCPhys; The current stuff.
439	63:48 High page id (12+).
440	47:12 The physical page frame number.
441	11:0 Low page id.
442	uint32_t fReadOnly : 1; Whether it's readonly page (rom or monitored in some way).
443	uint32_t u3Type : 3; The page type {RESERVED, MMIO, MMIO2, ROM, shadowed ROM, RAM}.
444	uint32_t u2PhysMon : 2; Physical access handler type {none, read, write, all}.
445	uint32_t u2VirtMon : 2; Virtual access handler type {none, read, write, all}..
446	uint32_t u2State : 2; The page state { zero, shared, normal, write monitored }.
447	uint32_t fWrittenTo : 1; Whether a write monitored page was written to.
448	uint32_t u20Reserved : 20; Reserved for later, mostly sharing stats.
449	uint32_t u32Tracking; The shadow PT tracking stuff, roughly.
450	@endverbatim
451	*
452	* Cost wise, this means we'll double the cost for guest memory. There isn't anyway
453	* around that I'm afraid. It means that the cost of dealing out 32GB of memory
454	* to one or more VMs is: (32GB >> PAGE_SHIFT) * 16 bytes, or 128MBs. Or another
455	* example, the VM heap cost when assigning 1GB to a VM will be: 4MB.
456	*
457	* A couple of cost examples for the total cost per-VM + kernel.
458	* 32-bit Windows and 32-bit linux:
459	* 1GB guest ram, 256K pages: 4MB + 2MB(+) = 6MB
460	* 4GB guest ram, 1M pages: 16MB + 8MB(+) = 24MB
461	* 32GB guest ram, 8M pages: 128MB + 64MB(+) = 192MB
462	* 64-bit Windows and 64-bit linux:
463	* 1GB guest ram, 256K pages: 4MB + 3MB(+) = 7MB
464	* 4GB guest ram, 1M pages: 16MB + 12MB(+) = 28MB
465	* 32GB guest ram, 8M pages: 128MB + 96MB(+) = 224MB
466	*
467	* UPDATE - 2007-09-27:
468	* Will need a ballooned flag/state too because we cannot
469	* trust the guest 100% and reporting the same page as ballooned more
470	* than once will put the GMM off balance.
471	*
472	*
473	* @section sec_pgmPhys_Serializing Serializing Access
474	*
475	* Initially, we'll try a simple scheme:
476	*
477	* - The per-VM RAM tracking structures (PGMRAMRANGE) is only modified
478	* by the EMT thread of that VM while in the pgm critsect.
479	* - Other threads in the VM process that needs to make reliable use of
480	* the per-VM RAM tracking structures will enter the critsect.
481	* - No process external thread or kernel thread will ever try enter
482	* the pgm critical section, as that just won't work.
483	* - The idle thread (and similar threads) doesn't not need 100% reliable
484	* data when performing it tasks as the EMT thread will be the one to
485	* do the actual changes later anyway. So, as long as it only accesses
486	* the main ram range, it can do so by somehow preventing the VM from
487	* being destroyed while it works on it...
488	*
489	* - The over-commitment management, including the allocating/freeing
490	* chunks, is serialized by a ring-0 mutex lock (a fast one since the
491	* more mundane mutex implementation is broken on Linux).
492	* - A separate mutex is protecting the set of allocation chunks so
493	* that pages can be shared or/and freed up while some other VM is
494	* allocating more chunks. This mutex can be take from under the other
495	* one, but not the other way around.
496	*
497	*
498	* @section sec_pgmPhys_Request VM Request interface
499	*
500	* When in ring-0 it will become necessary to send requests to a VM so it can
501	* for instance move a page while defragmenting during VM destroy. The idle
502	* thread will make use of this interface to request VMs to setup shared
503	* pages and to perform write monitoring of pages.
504	*
505	* I would propose an interface similar to the current VMReq interface, similar
506	* in that it doesn't require locking and that the one sending the request may
507	* wait for completion if it wishes to. This shouldn't be very difficult to
508	* realize.
509	*
510	* The requests themselves are also pretty simple. They are basically:
511	* -# Check that some precondition is still true.
512	* -# Do the update.
513	* -# Update all shadow page tables involved with the page.
514	*
515	* The 3rd step is identical to what we're already doing when updating a
516	* physical handler, see pgmHandlerPhysicalSetRamFlagsAndFlushShadowPTs.
517	*
518	*
519	*
520	* @section sec_pgmPhys_MappingCaches Mapping Caches
521	*
522	* In order to be able to map in and out memory and to be able to support
523	* guest with more RAM than we've got virtual address space, we'll employing
524	* a mapping cache. Normally ring-0 and ring-3 can share the same cache,
525	* however on 32-bit darwin the ring-0 code is running in a different memory
526	* context and therefore needs a separate cache. In raw-mode context we also
527	* need a separate cache. The 32-bit darwin mapping cache and the one for
528	* raw-mode context share a lot of code, see PGMRZDYNMAP.
529	*
530	*
531	* @subsection subsec_pgmPhys_MappingCaches_R3 Ring-3
532	*
533	* We've considered implementing the ring-3 mapping cache page based but found
534	* that this was bother some when one had to take into account TLBs+SMP and
535	* portability (missing the necessary APIs on several platforms). There were
536	* also some performance concerns with this approach which hadn't quite been
537	* worked out.
538	*
539	* Instead, we'll be mapping allocation chunks into the VM process. This simplifies
540	* matters greatly quite a bit since we don't need to invent any new ring-0 stuff,
541	* only some minor RTR0MEMOBJ mapping stuff. The main concern here is that mapping
542	* compared to the previous idea is that mapping or unmapping a 1MB chunk is more
543	* costly than a single page, although how much more costly is uncertain. We'll
544	* try address this by using a very big cache, preferably bigger than the actual
545	* VM RAM size if possible. The current VM RAM sizes should give some idea for
546	* 32-bit boxes, while on 64-bit we can probably get away with employing an
547	* unlimited cache.
548	*
549	* The cache have to parts, as already indicated, the ring-3 side and the
550	* ring-0 side.
551	*
552	* The ring-0 will be tied to the page allocator since it will operate on the
553	* memory objects it contains. It will therefore require the first ring-0 mutex
554	* discussed in @ref sec_pgmPhys_Serializing. We some double house keeping wrt
555	* to who has mapped what I think, since both VMMR0.r0 and RTR0MemObj will keep
556	* track of mapping relations
557	*
558	* The ring-3 part will be protected by the pgm critsect. For simplicity, we'll
559	* require anyone that desires to do changes to the mapping cache to do that
560	* from within this critsect. Alternatively, we could employ a separate critsect
561	* for serializing changes to the mapping cache as this would reduce potential
562	* contention with other threads accessing mappings unrelated to the changes
563	* that are in process. We can see about this later, contention will show
564	* up in the statistics anyway, so it'll be simple to tell.
565	*
566	* The organization of the ring-3 part will be very much like how the allocation
567	* chunks are organized in ring-0, that is in an AVL tree by chunk id. To avoid
568	* having to walk the tree all the time, we'll have a couple of lookaside entries
569	* like in we do for I/O ports and MMIO in IOM.
570	*
571	* The simplified flow of a PGMPhysRead/Write function:
572	* -# Enter the PGM critsect.
573	* -# Lookup GCPhys in the ram ranges and get the Page ID.
574	* -# Calc the Allocation Chunk ID from the Page ID.
575	* -# Check the lookaside entries and then the AVL tree for the Chunk ID.
576	* If not found in cache:
577	* -# Call ring-0 and request it to be mapped and supply
578	* a chunk to be unmapped if the cache is maxed out already.
579	* -# Insert the new mapping into the AVL tree (id + R3 address).
580	* -# Update the relevant lookaside entry and return the mapping address.
581	* -# Do the read/write according to monitoring flags and everything.
582	* -# Leave the critsect.
583	*
584	*
585	* @section sec_pgmPhys_Fallback Fallback
586	*
587	* Current all the "second tier" hosts will not support the RTR0MemObjAllocPhysNC
588	* API and thus require a fallback.
589	*
590	* So, when RTR0MemObjAllocPhysNC returns VERR_NOT_SUPPORTED the page allocator
591	* will return to the ring-3 caller (and later ring-0) and asking it to seed
592	* the page allocator with some fresh pages (VERR_GMM_SEED_ME). Ring-3 will
593	* then perform an SUPR3PageAlloc(cbChunk >> PAGE_SHIFT) call and make a
594	* "SeededAllocPages" call to ring-0.
595	*
596	* The first time ring-0 sees the VERR_NOT_SUPPORTED failure it will disable
597	* all page sharing (zero page detection will continue). It will also force
598	* all allocations to come from the VM which seeded the page. Both these
599	* measures are taken to make sure that there will never be any need for
600	* mapping anything into ring-3 - everything will be mapped already.
601	*
602	* Whether we'll continue to use the current MM locked memory management
603	* for this I don't quite know (I'd prefer not to and just ditch that all
604	* together), we'll see what's simplest to do.
605	*
606	*
607	*
608	* @section sec_pgmPhys_Changes Changes
609	*
610	* Breakdown of the changes involved?
611	*/
612
613
614	/*********************************************************************************************************************************
615	* Header Files *
616	*********************************************************************************************************************************/
617	#define LOG_GROUP LOG_GROUP_PGM
618	#include <VBox/vmm/dbgf.h>
619	#include <VBox/vmm/pgm.h>
620	#include <VBox/vmm/cpum.h>
621	#include <VBox/vmm/iom.h>
622	#include <VBox/sup.h>
623	#include <VBox/vmm/mm.h>
624	#include <VBox/vmm/em.h>
625	#include <VBox/vmm/stam.h>
626	#ifdef VBOX_WITH_REM
627	# include <VBox/vmm/rem.h>
628	#endif
629	#include <VBox/vmm/selm.h>
630	#include <VBox/vmm/ssm.h>
631	#include <VBox/vmm/hm.h>
632	#include "PGMInternal.h"
633	#include <VBox/vmm/vm.h>
634	#include <VBox/vmm/uvm.h>
635	#include "PGMInline.h"
636
637	#include <VBox/dbg.h>
638	#include <VBox/param.h>
639	#include <VBox/err.h>
640
641	#include <iprt/asm.h>
642	#include <iprt/asm-amd64-x86.h>
643	#include <iprt/assert.h>
644	#include <iprt/env.h>
645	#include <iprt/mem.h>
646	#include <iprt/file.h>
647	#include <iprt/string.h>
648	#include <iprt/thread.h>
649
650
651	/*********************************************************************************************************************************
652	* Structures and Typedefs *
653	*********************************************************************************************************************************/
654	/**
655	* Argument package for pgmR3RElocatePhysHnadler, pgmR3RelocateVirtHandler and
656	* pgmR3RelocateHyperVirtHandler.
657	*/
658	typedef struct PGMRELOCHANDLERARGS
659	{
660	RTGCINTPTR offDelta;
661	PVM pVM;
662	} PGMRELOCHANDLERARGS;
663	/** Pointer to a page access handlere relocation argument package. */
664	typedef PGMRELOCHANDLERARGS const *PCPGMRELOCHANDLERARGS;
665
666
667	/*********************************************************************************************************************************
668	* Internal Functions *
669	*********************************************************************************************************************************/
670	static int pgmR3InitPaging(PVM pVM);
671	static int pgmR3InitStats(PVM pVM);
672	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
673	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
674	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
675	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser);
676	#ifdef VBOX_WITH_RAW_MODE
677	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
678	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser);
679	#endif /* VBOX_WITH_RAW_MODE */
680	#ifdef VBOX_STRICT
681	static FNVMATSTATE pgmR3ResetNoMorePhysWritesFlag;
682	#endif
683	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0);
684	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst);
685	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher);
686
687	#ifdef VBOX_WITH_DEBUGGER
688	static FNDBGCCMD pgmR3CmdError;
689	static FNDBGCCMD pgmR3CmdSync;
690	static FNDBGCCMD pgmR3CmdSyncAlways;
691	# ifdef VBOX_STRICT
692	static FNDBGCCMD pgmR3CmdAssertCR3;
693	# endif
694	static FNDBGCCMD pgmR3CmdPhysToFile;
695	#endif
696
697
698	/*********************************************************************************************************************************
699	* Global Variables *
700	*********************************************************************************************************************************/
701	#ifdef VBOX_WITH_DEBUGGER
702	/** Argument descriptors for '.pgmerror' and '.pgmerroroff'. */
703	static const DBGCVARDESC g_aPgmErrorArgs[] =
704	{
705	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
706	{ 0, 1, DBGCVAR_CAT_STRING, 0, "where", "Error injection location." },
707	};
708
709	static const DBGCVARDESC g_aPgmPhysToFileArgs[] =
710	{
711	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
712	{ 1, 1, DBGCVAR_CAT_STRING, 0, "file", "The file name." },
713	{ 0, 1, DBGCVAR_CAT_STRING, 0, "nozero", "If present, zero pages are skipped." },
714	};
715
716	# ifdef DEBUG_sandervl
717	static const DBGCVARDESC g_aPgmCountPhysWritesArgs[] =
718	{
719	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
720	{ 1, 1, DBGCVAR_CAT_STRING, 0, "enabled", "on/off." },
721	{ 1, 1, DBGCVAR_CAT_NUMBER_NO_RANGE, 0, "interval", "Interval in ms." },
722	};
723	# endif
724
725	/** Command descriptors. */
726	static const DBGCCMD g_aCmds[] =
727	{
728	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
729	{ "pgmsync", 0, 0, NULL, 0, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
730	{ "pgmerror", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Enables inject runtime of errors into parts of PGM." },
731	{ "pgmerroroff", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Disables inject runtime errors into parts of PGM." },
732	# ifdef VBOX_STRICT
733	{ "pgmassertcr3", 0, 0, NULL, 0, 0, pgmR3CmdAssertCR3, "", "Check the shadow CR3 mapping." },
734	# ifdef VBOX_WITH_PAGE_SHARING
735	{ "pgmcheckduppages", 0, 0, NULL, 0, 0, pgmR3CmdCheckDuplicatePages, "", "Check for duplicate pages in all running VMs." },
736	{ "pgmsharedmodules", 0, 0, NULL, 0, 0, pgmR3CmdShowSharedModules, "", "Print shared modules info." },
737	# endif
738	# endif
739	{ "pgmsyncalways", 0, 0, NULL, 0, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
740	{ "pgmphystofile", 1, 2, &g_aPgmPhysToFileArgs[0], 2, 0, pgmR3CmdPhysToFile, "", "Save the physical memory to file." },
741	};
742	#endif
743
744
745
746
747	/*
748	* Shadow - 32-bit mode
749	*/
750	#define PGM_SHW_TYPE PGM_TYPE_32BIT
751	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
752	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_32BIT_STR(name)
753	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_32BIT_STR(name)
754	#include "PGMShw.h"
755
756	/* Guest - real mode */
757	#define PGM_GST_TYPE PGM_TYPE_REAL
758	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
759	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
760	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
761	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
762	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_REAL_STR(name)
763	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_REAL_STR(name)
764	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
765	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
766	#include "PGMBth.h"
767	#include "PGMGstDefs.h"
768	#include "PGMGst.h"
769	#undef BTH_PGMPOOLKIND_PT_FOR_PT
770	#undef BTH_PGMPOOLKIND_ROOT
771	#undef PGM_BTH_NAME
772	#undef PGM_BTH_NAME_RC_STR
773	#undef PGM_BTH_NAME_R0_STR
774	#undef PGM_GST_TYPE
775	#undef PGM_GST_NAME
776	#undef PGM_GST_NAME_RC_STR
777	#undef PGM_GST_NAME_R0_STR
778
779	/* Guest - protected mode */
780	#define PGM_GST_TYPE PGM_TYPE_PROT
781	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
782	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
783	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
784	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
785	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_PROT_STR(name)
786	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_PROT_STR(name)
787	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
788	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
789	#include "PGMBth.h"
790	#include "PGMGstDefs.h"
791	#include "PGMGst.h"
792	#undef BTH_PGMPOOLKIND_PT_FOR_PT
793	#undef BTH_PGMPOOLKIND_ROOT
794	#undef PGM_BTH_NAME
795	#undef PGM_BTH_NAME_RC_STR
796	#undef PGM_BTH_NAME_R0_STR
797	#undef PGM_GST_TYPE
798	#undef PGM_GST_NAME
799	#undef PGM_GST_NAME_RC_STR
800	#undef PGM_GST_NAME_R0_STR
801
802	/* Guest - 32-bit mode */
803	#define PGM_GST_TYPE PGM_TYPE_32BIT
804	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
805	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
806	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
807	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
808	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_32BIT_32BIT_STR(name)
809	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_32BIT_32BIT_STR(name)
810	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
811	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
812	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD
813	#include "PGMBth.h"
814	#include "PGMGstDefs.h"
815	#include "PGMGst.h"
816	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
817	#undef BTH_PGMPOOLKIND_PT_FOR_PT
818	#undef BTH_PGMPOOLKIND_ROOT
819	#undef PGM_BTH_NAME
820	#undef PGM_BTH_NAME_RC_STR
821	#undef PGM_BTH_NAME_R0_STR
822	#undef PGM_GST_TYPE
823	#undef PGM_GST_NAME
824	#undef PGM_GST_NAME_RC_STR
825	#undef PGM_GST_NAME_R0_STR
826
827	#undef PGM_SHW_TYPE
828	#undef PGM_SHW_NAME
829	#undef PGM_SHW_NAME_RC_STR
830	#undef PGM_SHW_NAME_R0_STR
831
832
833	/*
834	* Shadow - PAE mode
835	*/
836	#define PGM_SHW_TYPE PGM_TYPE_PAE
837	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
838	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_PAE_STR(name)
839	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_PAE_STR(name)
840	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
841	#include "PGMShw.h"
842
843	/* Guest - real mode */
844	#define PGM_GST_TYPE PGM_TYPE_REAL
845	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
846	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
847	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
848	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
849	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_REAL_STR(name)
850	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_REAL_STR(name)
851	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
852	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
853	#include "PGMGstDefs.h"
854	#include "PGMBth.h"
855	#undef BTH_PGMPOOLKIND_PT_FOR_PT
856	#undef BTH_PGMPOOLKIND_ROOT
857	#undef PGM_BTH_NAME
858	#undef PGM_BTH_NAME_RC_STR
859	#undef PGM_BTH_NAME_R0_STR
860	#undef PGM_GST_TYPE
861	#undef PGM_GST_NAME
862	#undef PGM_GST_NAME_RC_STR
863	#undef PGM_GST_NAME_R0_STR
864
865	/* Guest - protected mode */
866	#define PGM_GST_TYPE PGM_TYPE_PROT
867	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
868	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
869	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
870	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
871	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PROT_STR(name)
872	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PROT_STR(name)
873	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
874	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
875	#include "PGMGstDefs.h"
876	#include "PGMBth.h"
877	#undef BTH_PGMPOOLKIND_PT_FOR_PT
878	#undef BTH_PGMPOOLKIND_ROOT
879	#undef PGM_BTH_NAME
880	#undef PGM_BTH_NAME_RC_STR
881	#undef PGM_BTH_NAME_R0_STR
882	#undef PGM_GST_TYPE
883	#undef PGM_GST_NAME
884	#undef PGM_GST_NAME_RC_STR
885	#undef PGM_GST_NAME_R0_STR
886
887	/* Guest - 32-bit mode */
888	#define PGM_GST_TYPE PGM_TYPE_32BIT
889	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
890	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
891	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
892	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
893	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_32BIT_STR(name)
894	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_32BIT_STR(name)
895	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
896	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
897	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_FOR_32BIT
898	#include "PGMGstDefs.h"
899	#include "PGMBth.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	/* Guest - PAE mode */
912	#define PGM_GST_TYPE PGM_TYPE_PAE
913	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
914	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
915	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
916	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
917	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_PAE_PAE_STR(name)
918	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_PAE_PAE_STR(name)
919	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
920	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
921	#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT
922	#include "PGMBth.h"
923	#include "PGMGstDefs.h"
924	#include "PGMGst.h"
925	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
926	#undef BTH_PGMPOOLKIND_PT_FOR_PT
927	#undef BTH_PGMPOOLKIND_ROOT
928	#undef PGM_BTH_NAME
929	#undef PGM_BTH_NAME_RC_STR
930	#undef PGM_BTH_NAME_R0_STR
931	#undef PGM_GST_TYPE
932	#undef PGM_GST_NAME
933	#undef PGM_GST_NAME_RC_STR
934	#undef PGM_GST_NAME_R0_STR
935
936	#undef PGM_SHW_TYPE
937	#undef PGM_SHW_NAME
938	#undef PGM_SHW_NAME_RC_STR
939	#undef PGM_SHW_NAME_R0_STR
940
941
942	/*
943	* Shadow - AMD64 mode
944	*/
945	#define PGM_SHW_TYPE PGM_TYPE_AMD64
946	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
947	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_AMD64_STR(name)
948	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_AMD64_STR(name)
949	#include "PGMShw.h"
950
951	#ifdef VBOX_WITH_64_BITS_GUESTS
952	/* Guest - AMD64 mode */
953	# define PGM_GST_TYPE PGM_TYPE_AMD64
954	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
955	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
956	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
957	# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
958	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_AMD64_AMD64_STR(name)
959	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_AMD64_AMD64_STR(name)
960	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
961	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
962	# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_64BIT_PML4
963	# include "PGMBth.h"
964	# include "PGMGstDefs.h"
965	# include "PGMGst.h"
966	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
967	# undef BTH_PGMPOOLKIND_PT_FOR_PT
968	# undef BTH_PGMPOOLKIND_ROOT
969	# undef PGM_BTH_NAME
970	# undef PGM_BTH_NAME_RC_STR
971	# undef PGM_BTH_NAME_R0_STR
972	# undef PGM_GST_TYPE
973	# undef PGM_GST_NAME
974	# undef PGM_GST_NAME_RC_STR
975	# undef PGM_GST_NAME_R0_STR
976	#endif /* VBOX_WITH_64_BITS_GUESTS */
977
978	#undef PGM_SHW_TYPE
979	#undef PGM_SHW_NAME
980	#undef PGM_SHW_NAME_RC_STR
981	#undef PGM_SHW_NAME_R0_STR
982
983
984	/*
985	* Shadow - Nested paging mode
986	*/
987	#define PGM_SHW_TYPE PGM_TYPE_NESTED
988	#define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
989	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_NESTED_STR(name)
990	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_NESTED_STR(name)
991	#include "PGMShw.h"
992
993	/* Guest - real mode */
994	#define PGM_GST_TYPE PGM_TYPE_REAL
995	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
996	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
997	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
998	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
999	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_REAL_STR(name)
1000	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_REAL_STR(name)
1001	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1002	#include "PGMGstDefs.h"
1003	#include "PGMBth.h"
1004	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1005	#undef PGM_BTH_NAME
1006	#undef PGM_BTH_NAME_RC_STR
1007	#undef PGM_BTH_NAME_R0_STR
1008	#undef PGM_GST_TYPE
1009	#undef PGM_GST_NAME
1010	#undef PGM_GST_NAME_RC_STR
1011	#undef PGM_GST_NAME_R0_STR
1012
1013	/* Guest - protected mode */
1014	#define PGM_GST_TYPE PGM_TYPE_PROT
1015	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
1016	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
1017	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
1018	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
1019	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PROT_STR(name)
1020	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PROT_STR(name)
1021	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1022	#include "PGMGstDefs.h"
1023	#include "PGMBth.h"
1024	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1025	#undef PGM_BTH_NAME
1026	#undef PGM_BTH_NAME_RC_STR
1027	#undef PGM_BTH_NAME_R0_STR
1028	#undef PGM_GST_TYPE
1029	#undef PGM_GST_NAME
1030	#undef PGM_GST_NAME_RC_STR
1031	#undef PGM_GST_NAME_R0_STR
1032
1033	/* Guest - 32-bit mode */
1034	#define PGM_GST_TYPE PGM_TYPE_32BIT
1035	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1036	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1037	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1038	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
1039	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_32BIT_STR(name)
1040	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_32BIT_STR(name)
1041	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1042	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1043	#include "PGMGstDefs.h"
1044	#include "PGMBth.h"
1045	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1046	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1047	#undef PGM_BTH_NAME
1048	#undef PGM_BTH_NAME_RC_STR
1049	#undef PGM_BTH_NAME_R0_STR
1050	#undef PGM_GST_TYPE
1051	#undef PGM_GST_NAME
1052	#undef PGM_GST_NAME_RC_STR
1053	#undef PGM_GST_NAME_R0_STR
1054
1055	/* Guest - PAE mode */
1056	#define PGM_GST_TYPE PGM_TYPE_PAE
1057	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1058	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1059	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1060	#define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
1061	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_PAE_STR(name)
1062	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_PAE_STR(name)
1063	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1064	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1065	#include "PGMGstDefs.h"
1066	#include "PGMBth.h"
1067	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1068	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1069	#undef PGM_BTH_NAME
1070	#undef PGM_BTH_NAME_RC_STR
1071	#undef PGM_BTH_NAME_R0_STR
1072	#undef PGM_GST_TYPE
1073	#undef PGM_GST_NAME
1074	#undef PGM_GST_NAME_RC_STR
1075	#undef PGM_GST_NAME_R0_STR
1076
1077	#ifdef VBOX_WITH_64_BITS_GUESTS
1078	/* Guest - AMD64 mode */
1079	# define PGM_GST_TYPE PGM_TYPE_AMD64
1080	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1081	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1082	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1083	# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
1084	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_NESTED_AMD64_STR(name)
1085	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_NESTED_AMD64_STR(name)
1086	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1087	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1088	# include "PGMGstDefs.h"
1089	# include "PGMBth.h"
1090	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1091	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1092	# undef PGM_BTH_NAME
1093	# undef PGM_BTH_NAME_RC_STR
1094	# undef PGM_BTH_NAME_R0_STR
1095	# undef PGM_GST_TYPE
1096	# undef PGM_GST_NAME
1097	# undef PGM_GST_NAME_RC_STR
1098	# undef PGM_GST_NAME_R0_STR
1099	#endif /* VBOX_WITH_64_BITS_GUESTS */
1100
1101	#undef PGM_SHW_TYPE
1102	#undef PGM_SHW_NAME
1103	#undef PGM_SHW_NAME_RC_STR
1104	#undef PGM_SHW_NAME_R0_STR
1105
1106
1107	/*
1108	* Shadow - EPT
1109	*/
1110	#define PGM_SHW_TYPE PGM_TYPE_EPT
1111	#define PGM_SHW_NAME(name) PGM_SHW_NAME_EPT(name)
1112	#define PGM_SHW_NAME_RC_STR(name) PGM_SHW_NAME_RC_EPT_STR(name)
1113	#define PGM_SHW_NAME_R0_STR(name) PGM_SHW_NAME_R0_EPT_STR(name)
1114	#include "PGMShw.h"
1115
1116	/* Guest - real mode */
1117	#define PGM_GST_TYPE PGM_TYPE_REAL
1118	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
1119	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_REAL_STR(name)
1120	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_REAL_STR(name)
1121	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_REAL(name)
1122	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_REAL_STR(name)
1123	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_REAL_STR(name)
1124	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1125	#include "PGMGstDefs.h"
1126	#include "PGMBth.h"
1127	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1128	#undef PGM_BTH_NAME
1129	#undef PGM_BTH_NAME_RC_STR
1130	#undef PGM_BTH_NAME_R0_STR
1131	#undef PGM_GST_TYPE
1132	#undef PGM_GST_NAME
1133	#undef PGM_GST_NAME_RC_STR
1134	#undef PGM_GST_NAME_R0_STR
1135
1136	/* Guest - protected mode */
1137	#define PGM_GST_TYPE PGM_TYPE_PROT
1138	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
1139	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PROT_STR(name)
1140	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PROT_STR(name)
1141	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PROT(name)
1142	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PROT_STR(name)
1143	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PROT_STR(name)
1144	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
1145	#include "PGMGstDefs.h"
1146	#include "PGMBth.h"
1147	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1148	#undef PGM_BTH_NAME
1149	#undef PGM_BTH_NAME_RC_STR
1150	#undef PGM_BTH_NAME_R0_STR
1151	#undef PGM_GST_TYPE
1152	#undef PGM_GST_NAME
1153	#undef PGM_GST_NAME_RC_STR
1154	#undef PGM_GST_NAME_R0_STR
1155
1156	/* Guest - 32-bit mode */
1157	#define PGM_GST_TYPE PGM_TYPE_32BIT
1158	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
1159	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_32BIT_STR(name)
1160	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_32BIT_STR(name)
1161	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_32BIT(name)
1162	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_32BIT_STR(name)
1163	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_32BIT_STR(name)
1164	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
1165	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
1166	#include "PGMGstDefs.h"
1167	#include "PGMBth.h"
1168	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1169	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1170	#undef PGM_BTH_NAME
1171	#undef PGM_BTH_NAME_RC_STR
1172	#undef PGM_BTH_NAME_R0_STR
1173	#undef PGM_GST_TYPE
1174	#undef PGM_GST_NAME
1175	#undef PGM_GST_NAME_RC_STR
1176	#undef PGM_GST_NAME_R0_STR
1177
1178	/* Guest - PAE mode */
1179	#define PGM_GST_TYPE PGM_TYPE_PAE
1180	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
1181	#define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_PAE_STR(name)
1182	#define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_PAE_STR(name)
1183	#define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PAE(name)
1184	#define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_PAE_STR(name)
1185	#define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_PAE_STR(name)
1186	#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1187	#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1188	#include "PGMGstDefs.h"
1189	#include "PGMBth.h"
1190	#undef BTH_PGMPOOLKIND_PT_FOR_BIG
1191	#undef BTH_PGMPOOLKIND_PT_FOR_PT
1192	#undef PGM_BTH_NAME
1193	#undef PGM_BTH_NAME_RC_STR
1194	#undef PGM_BTH_NAME_R0_STR
1195	#undef PGM_GST_TYPE
1196	#undef PGM_GST_NAME
1197	#undef PGM_GST_NAME_RC_STR
1198	#undef PGM_GST_NAME_R0_STR
1199
1200	#ifdef VBOX_WITH_64_BITS_GUESTS
1201	/* Guest - AMD64 mode */
1202	# define PGM_GST_TYPE PGM_TYPE_AMD64
1203	# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
1204	# define PGM_GST_NAME_RC_STR(name) PGM_GST_NAME_RC_AMD64_STR(name)
1205	# define PGM_GST_NAME_R0_STR(name) PGM_GST_NAME_R0_AMD64_STR(name)
1206	# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_AMD64(name)
1207	# define PGM_BTH_NAME_RC_STR(name) PGM_BTH_NAME_RC_EPT_AMD64_STR(name)
1208	# define PGM_BTH_NAME_R0_STR(name) PGM_BTH_NAME_R0_EPT_AMD64_STR(name)
1209	# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
1210	# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
1211	# include "PGMGstDefs.h"
1212	# include "PGMBth.h"
1213	# undef BTH_PGMPOOLKIND_PT_FOR_BIG
1214	# undef BTH_PGMPOOLKIND_PT_FOR_PT
1215	# undef PGM_BTH_NAME
1216	# undef PGM_BTH_NAME_RC_STR
1217	# undef PGM_BTH_NAME_R0_STR
1218	# undef PGM_GST_TYPE
1219	# undef PGM_GST_NAME
1220	# undef PGM_GST_NAME_RC_STR
1221	# undef PGM_GST_NAME_R0_STR
1222	#endif /* VBOX_WITH_64_BITS_GUESTS */
1223
1224	#undef PGM_SHW_TYPE
1225	#undef PGM_SHW_NAME
1226	#undef PGM_SHW_NAME_RC_STR
1227	#undef PGM_SHW_NAME_R0_STR
1228
1229
1230
1231	/**
1232	* Initiates the paging of VM.
1233	*
1234	* @returns VBox status code.
1235	* @param pVM The cross context VM structure.
1236	*/
1237	VMMR3DECL(int) PGMR3Init(PVM pVM)
1238	{
1239	LogFlow(("PGMR3Init:\n"));
1240	PCFGMNODE pCfgPGM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM");
1241	int rc;
1242
1243	/*
1244	* Assert alignment and sizes.
1245	*/
1246	AssertCompile(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
1247	AssertCompile(sizeof(pVM->aCpus[0].pgm.s) <= sizeof(pVM->aCpus[0].pgm.padding));
1248	AssertCompileMemberAlignment(PGM, CritSectX, sizeof(uintptr_t));
1249
1250	/*
1251	* Init the structure.
1252	*/
1253	pVM->pgm.s.offVM = RT_OFFSETOF(VM, pgm.s);
1254	pVM->pgm.s.offVCpuPGM = RT_OFFSETOF(VMCPU, pgm.s);
1255	/pVM->pgm.s.fRestoreRomPagesAtReset = false;/
1256
1257	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aHandyPages); i++)
1258	{
1259	pVM->pgm.s.aHandyPages[i].HCPhysGCPhys = NIL_RTHCPHYS;
1260	pVM->pgm.s.aHandyPages[i].idPage = NIL_GMM_PAGEID;
1261	pVM->pgm.s.aHandyPages[i].idSharedPage = NIL_GMM_PAGEID;
1262	}
1263
1264	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aLargeHandyPage); i++)
1265	{
1266	pVM->pgm.s.aLargeHandyPage[i].HCPhysGCPhys = NIL_RTHCPHYS;
1267	pVM->pgm.s.aLargeHandyPage[i].idPage = NIL_GMM_PAGEID;
1268	pVM->pgm.s.aLargeHandyPage[i].idSharedPage = NIL_GMM_PAGEID;
1269	}
1270
1271	/* Init the per-CPU part. */
1272	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1273	{
1274	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1275	PPGMCPU pPGM = &pVCpu->pgm.s;
1276
1277	pPGM->offVM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)pVM;
1278	pPGM->offVCpu = RT_OFFSETOF(VMCPU, pgm.s);
1279	pPGM->offPGM = (uintptr_t)&pVCpu->pgm.s - (uintptr_t)&pVM->pgm.s;
1280
1281	pPGM->enmShadowMode = PGMMODE_INVALID;
1282	pPGM->enmGuestMode = PGMMODE_INVALID;
1283
1284	pPGM->GCPhysCR3 = NIL_RTGCPHYS;
1285
1286	pPGM->pGst32BitPdR3 = NULL;
1287	pPGM->pGstPaePdptR3 = NULL;
1288	pPGM->pGstAmd64Pml4R3 = NULL;
1289	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1290	pPGM->pGst32BitPdR0 = NIL_RTR0PTR;
1291	pPGM->pGstPaePdptR0 = NIL_RTR0PTR;
1292	pPGM->pGstAmd64Pml4R0 = NIL_RTR0PTR;
1293	#endif
1294	pPGM->pGst32BitPdRC = NIL_RTRCPTR;
1295	pPGM->pGstPaePdptRC = NIL_RTRCPTR;
1296	for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsR3); i++)
1297	{
1298	pPGM->apGstPaePDsR3[i] = NULL;
1299	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1300	pPGM->apGstPaePDsR0[i] = NIL_RTR0PTR;
1301	#endif
1302	pPGM->apGstPaePDsRC[i] = NIL_RTRCPTR;
1303	pPGM->aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
1304	pPGM->aGstPaePdpeRegs[i].u = UINT64_MAX;
1305	pPGM->aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
1306	}
1307
1308	pPGM->fA20Enabled = true;
1309	pPGM->GCPhysA20Mask = ~((RTGCPHYS)!pPGM->fA20Enabled << 20);
1310	}
1311
1312	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1313	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1; /* default; checked later */
1314	pVM->pgm.s.GCPtrPrevRamRangeMapping = MM_HYPER_AREA_ADDRESS;
1315
1316	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "RamPreAlloc", &pVM->pgm.s.fRamPreAlloc,
1317	#ifdef VBOX_WITH_PREALLOC_RAM_BY_DEFAULT
1318	true
1319	#else
1320	false
1321	#endif
1322	);
1323	AssertLogRelRCReturn(rc, rc);
1324
1325	#if HC_ARCH_BITS == 32
1326	# ifdef RT_OS_DARWIN
1327	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE * 3);
1328	# else
1329	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE);
1330	# endif
1331	#else
1332	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, UINT32_MAX);
1333	#endif
1334	AssertLogRelRCReturn(rc, rc);
1335	for (uint32_t i = 0; i < RT_ELEMENTS(pVM->pgm.s.ChunkR3Map.Tlb.aEntries); i++)
1336	pVM->pgm.s.ChunkR3Map.Tlb.aEntries[i].idChunk = NIL_GMM_CHUNKID;
1337
1338	/*
1339	* Get the configured RAM size - to estimate saved state size.
1340	*/
1341	uint64_t cbRam;
1342	rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
1343	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1344	cbRam = 0;
1345	else if (RT_SUCCESS(rc))
1346	{
1347	if (cbRam < PAGE_SIZE)
1348	cbRam = 0;
1349	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
1350	}
1351	else
1352	{
1353	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc));
1354	return rc;
1355	}
1356
1357	/*
1358	* Check for PCI pass-through and other configurables.
1359	*/
1360	rc = CFGMR3QueryBoolDef(pCfgPGM, "PciPassThrough", &pVM->pgm.s.fPciPassthrough, false);
1361	AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"PciPassThrough\", rc=%Rrc.\n", rc), rc);
1362	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough \|\| pVM->pgm.s.fRamPreAlloc, VERR_INVALID_PARAMETER);
1363
1364	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "PageFusionAllowed", &pVM->pgm.s.fPageFusionAllowed, false);
1365	AssertLogRelRCReturn(rc, rc);
1366
1367	/** @cfgm{/PGM/ZeroRamPagesOnReset, boolean, true}
1368	* Whether to clear RAM pages on (hard) reset. */
1369	rc = CFGMR3QueryBoolDef(pCfgPGM, "ZeroRamPagesOnReset", &pVM->pgm.s.fZeroRamPagesOnReset, true);
1370	AssertLogRelRCReturn(rc, rc);
1371
1372	#ifdef VBOX_WITH_STATISTICS
1373	/*
1374	* Allocate memory for the statistics before someone tries to use them.
1375	*/
1376	size_t cbTotalStats = RT_ALIGN_Z(sizeof(PGMSTATS), 64) + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64) * pVM->cCpus;
1377	void *pv;
1378	rc = MMHyperAlloc(pVM, RT_ALIGN_Z(cbTotalStats, PAGE_SIZE), PAGE_SIZE, MM_TAG_PGM, &pv);
1379	AssertRCReturn(rc, rc);
1380
1381	pVM->pgm.s.pStatsR3 = (PGMSTATS *)pv;
1382	pVM->pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1383	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1384	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMSTATS), 64);
1385
1386	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
1387	{
1388	pVM->aCpus[iCpu].pgm.s.pStatsR3 = (PGMCPUSTATS *)pv;
1389	pVM->aCpus[iCpu].pgm.s.pStatsR0 = MMHyperCCToR0(pVM, pv);
1390	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pv);
1391
1392	pv = (uint8_t *)pv + RT_ALIGN_Z(sizeof(PGMCPUSTATS), 64);
1393	}
1394	#endif /* VBOX_WITH_STATISTICS */
1395
1396	/*
1397	* Register callbacks, string formatters and the saved state data unit.
1398	*/
1399	#ifdef VBOX_STRICT
1400	VMR3AtStateRegister(pVM->pUVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
1401	#endif
1402	PGMRegisterStringFormatTypes();
1403
1404	rc = pgmR3InitSavedState(pVM, cbRam);
1405	if (RT_FAILURE(rc))
1406	return rc;
1407
1408	/*
1409	* Initialize the PGM critical section and flush the phys TLBs
1410	*/
1411	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSectX, RT_SRC_POS, "PGM");
1412	AssertRCReturn(rc, rc);
1413
1414	PGMR3PhysChunkInvalidateTLB(pVM);
1415	pgmPhysInvalidatePageMapTLB(pVM);
1416
1417	/*
1418	* For the time being we sport a full set of handy pages in addition to the base
1419	* memory to simplify things.
1420	*/
1421	rc = MMR3ReserveHandyPages(pVM, RT_ELEMENTS(pVM->pgm.s.aHandyPages)); /** @todo this should be changed to PGM_HANDY_PAGES_MIN but this needs proper testing... */
1422	AssertRCReturn(rc, rc);
1423
1424	/*
1425	* Trees
1426	*/
1427	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesR3);
1428	if (RT_SUCCESS(rc))
1429	{
1430	pVM->pgm.s.pTreesR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pTreesR3);
1431	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
1432	}
1433
1434	/*
1435	* Allocate the zero page.
1436	*/
1437	if (RT_SUCCESS(rc))
1438	{
1439	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
1440	if (RT_SUCCESS(rc))
1441	{
1442	pVM->pgm.s.pvZeroPgRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pvZeroPgR3);
1443	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1444	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
1445	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
1446	}
1447	}
1448
1449	/*
1450	* Allocate the invalid MMIO page.
1451	* (The invalid bits in HCPhysInvMmioPg are set later on init complete.)
1452	*/
1453	if (RT_SUCCESS(rc))
1454	{
1455	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvMmioPgR3);
1456	if (RT_SUCCESS(rc))
1457	{
1458	ASMMemFill32(pVM->pgm.s.pvMmioPgR3, PAGE_SIZE, 0xfeedface);
1459	pVM->pgm.s.HCPhysMmioPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvMmioPgR3);
1460	AssertRelease(pVM->pgm.s.HCPhysMmioPg != NIL_RTHCPHYS);
1461	pVM->pgm.s.HCPhysInvMmioPg = pVM->pgm.s.HCPhysMmioPg;
1462	}
1463	}
1464
1465	/*
1466	* Register the physical access handler protecting ROMs.
1467	*/
1468	if (RT_SUCCESS(rc))
1469	rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_WRITE,
1470	pgmPhysRomWriteHandler,
1471	NULL, NULL, "pgmPhysRomWritePfHandler",
1472	NULL, NULL, "pgmPhysRomWritePfHandler",
1473	"ROM write protection",
1474	&pVM->pgm.s.hRomPhysHandlerType);
1475
1476	/*
1477	* Init the paging.
1478	*/
1479	if (RT_SUCCESS(rc))
1480	rc = pgmR3InitPaging(pVM);
1481
1482	/*
1483	* Init the page pool.
1484	*/
1485	if (RT_SUCCESS(rc))
1486	rc = pgmR3PoolInit(pVM);
1487
1488	if (RT_SUCCESS(rc))
1489	{
1490	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1491	{
1492	PVMCPU pVCpu = &pVM->aCpus[i];
1493	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
1494	if (RT_FAILURE(rc))
1495	break;
1496	}
1497	}
1498
1499	if (RT_SUCCESS(rc))
1500	{
1501	/*
1502	* Info & statistics
1503	*/
1504	DBGFR3InfoRegisterInternalEx(pVM, "mode",
1505	"Shows the current paging mode. "
1506	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing is given.",
1507	pgmR3InfoMode,
1508	DBGFINFO_FLAGS_ALL_EMTS);
1509	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
1510	"Dumps all the entries in the top level paging table. No arguments.",
1511	pgmR3InfoCr3);
1512	DBGFR3InfoRegisterInternal(pVM, "phys",
1513	"Dumps all the physical address ranges. No arguments.",
1514	pgmR3PhysInfo);
1515	DBGFR3InfoRegisterInternal(pVM, "handlers",
1516	"Dumps physical, virtual and hyper virtual handlers. "
1517	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
1518	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
1519	pgmR3InfoHandlers);
1520	DBGFR3InfoRegisterInternal(pVM, "mappings",
1521	"Dumps guest mappings.",
1522	pgmR3MapInfo);
1523
1524	pgmR3InitStats(pVM);
1525
1526	#ifdef VBOX_WITH_DEBUGGER
1527	/*
1528	* Debugger commands.
1529	*/
1530	static bool s_fRegisteredCmds = false;
1531	if (!s_fRegisteredCmds)
1532	{
1533	int rc2 = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
1534	if (RT_SUCCESS(rc2))
1535	s_fRegisteredCmds = true;
1536	}
1537	#endif
1538	return VINF_SUCCESS;
1539	}
1540
1541	/* Almost no cleanup necessary, MM frees all memory. */
1542	PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
1543
1544	return rc;
1545	}
1546
1547
1548	/**
1549	* Init paging.
1550	*
1551	* Since we need to check what mode the host is operating in before we can choose
1552	* the right paging functions for the host we have to delay this until R0 has
1553	* been initialized.
1554	*
1555	* @returns VBox status code.
1556	* @param pVM The cross context VM structure.
1557	*/
1558	static int pgmR3InitPaging(PVM pVM)
1559	{
1560	/*
1561	* Force a recalculation of modes and switcher so everyone gets notified.
1562	*/
1563	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1564	{
1565	PVMCPU pVCpu = &pVM->aCpus[i];
1566
1567	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
1568	pVCpu->pgm.s.enmGuestMode = PGMMODE_INVALID;
1569	}
1570
1571	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1572
1573	/*
1574	* Allocate static mapping space for whatever the cr3 register
1575	* points to and in the case of PAE mode to the 4 PDs.
1576	*/
1577	int rc = MMR3HyperReserve(pVM, PAGE_SIZE * 5, "CR3 mapping", &pVM->pgm.s.GCPtrCR3Mapping);
1578	if (RT_FAILURE(rc))
1579	{
1580	AssertMsgFailed(("Failed to reserve two pages for cr mapping in HMA, rc=%Rrc\n", rc));
1581	return rc;
1582	}
1583	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
1584
1585	/*
1586	* Allocate pages for the three possible intermediate contexts
1587	* (AMD64, PAE and plain 32-Bit). We maintain all three contexts
1588	* for the sake of simplicity. The AMD64 uses the PAE for the
1589	* lower levels, making the total number of pages 11 (3 + 7 + 1).
1590	*
1591	* We assume that two page tables will be enought for the core code
1592	* mappings (HC virtual and identity).
1593	*/
1594	pVM->pgm.s.pInterPD = (PX86PD)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPD, VERR_NO_PAGE_MEMORY);
1595	pVM->pgm.s.apInterPTs[0] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[0], VERR_NO_PAGE_MEMORY);
1596	pVM->pgm.s.apInterPTs[1] = (PX86PT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.apInterPTs[1], VERR_NO_PAGE_MEMORY);
1597	pVM->pgm.s.apInterPaePTs[0] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[0], VERR_NO_PAGE_MEMORY);
1598	pVM->pgm.s.apInterPaePTs[1] = (PX86PTPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePTs[1], VERR_NO_PAGE_MEMORY);
1599	pVM->pgm.s.apInterPaePDs[0] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[0], VERR_NO_PAGE_MEMORY);
1600	pVM->pgm.s.apInterPaePDs[1] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[1], VERR_NO_PAGE_MEMORY);
1601	pVM->pgm.s.apInterPaePDs[2] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[2], VERR_NO_PAGE_MEMORY);
1602	pVM->pgm.s.apInterPaePDs[3] = (PX86PDPAE)MMR3PageAlloc(pVM); AssertReturn(pVM->pgm.s.apInterPaePDs[3], VERR_NO_PAGE_MEMORY);
1603	pVM->pgm.s.pInterPaePDPT = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT, VERR_NO_PAGE_MEMORY);
1604	pVM->pgm.s.pInterPaePDPT64 = (PX86PDPT)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePDPT64, VERR_NO_PAGE_MEMORY);
1605	pVM->pgm.s.pInterPaePML4 = (PX86PML4)MMR3PageAllocLow(pVM); AssertReturn(pVM->pgm.s.pInterPaePML4, VERR_NO_PAGE_MEMORY);
1606
1607	pVM->pgm.s.HCPhysInterPD = MMPage2Phys(pVM, pVM->pgm.s.pInterPD);
1608	AssertRelease(pVM->pgm.s.HCPhysInterPD != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPD & PAGE_OFFSET_MASK));
1609	pVM->pgm.s.HCPhysInterPaePDPT = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT);
1610	AssertRelease(pVM->pgm.s.HCPhysInterPaePDPT != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePDPT & PAGE_OFFSET_MASK));
1611	pVM->pgm.s.HCPhysInterPaePML4 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePML4);
1612	AssertRelease(pVM->pgm.s.HCPhysInterPaePML4 != NIL_RTHCPHYS && !(pVM->pgm.s.HCPhysInterPaePML4 & PAGE_OFFSET_MASK) && pVM->pgm.s.HCPhysInterPaePML4 < 0xffffffff);
1613
1614	/*
1615	* Initialize the pages, setting up the PML4 and PDPT for repetitive 4GB action.
1616	*/
1617	ASMMemZeroPage(pVM->pgm.s.pInterPD);
1618	ASMMemZeroPage(pVM->pgm.s.apInterPTs[0]);
1619	ASMMemZeroPage(pVM->pgm.s.apInterPTs[1]);
1620
1621	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[0]);
1622	ASMMemZeroPage(pVM->pgm.s.apInterPaePTs[1]);
1623
1624	ASMMemZeroPage(pVM->pgm.s.pInterPaePDPT);
1625	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.apInterPaePDs); i++)
1626	{
1627	ASMMemZeroPage(pVM->pgm.s.apInterPaePDs[i]);
1628	pVM->pgm.s.pInterPaePDPT->a[i].u = X86_PDPE_P \| PGM_PLXFLAGS_PERMANENT
1629	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[i]);
1630	}
1631
1632	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePDPT64->a); i++)
1633	{
1634	const unsigned iPD = i % RT_ELEMENTS(pVM->pgm.s.apInterPaePDs);
1635	pVM->pgm.s.pInterPaePDPT64->a[i].u = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A \| PGM_PLXFLAGS_PERMANENT
1636	\| MMPage2Phys(pVM, pVM->pgm.s.apInterPaePDs[iPD]);
1637	}
1638
1639	RTHCPHYS HCPhysInterPaePDPT64 = MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64);
1640	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.pInterPaePML4->a); i++)
1641	pVM->pgm.s.pInterPaePML4->a[i].u = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A \| PGM_PLXFLAGS_PERMANENT
1642	\| HCPhysInterPaePDPT64;
1643
1644	/*
1645	* Initialize paging workers and mode from current host mode
1646	* and the guest running in real mode.
1647	*/
1648	pVM->pgm.s.enmHostMode = SUPR3GetPagingMode();
1649	switch (pVM->pgm.s.enmHostMode)
1650	{
1651	case SUPPAGINGMODE_32_BIT:
1652	case SUPPAGINGMODE_32_BIT_GLOBAL:
1653	case SUPPAGINGMODE_PAE:
1654	case SUPPAGINGMODE_PAE_GLOBAL:
1655	case SUPPAGINGMODE_PAE_NX:
1656	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1657	break;
1658
1659	case SUPPAGINGMODE_AMD64:
1660	case SUPPAGINGMODE_AMD64_GLOBAL:
1661	case SUPPAGINGMODE_AMD64_NX:
1662	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1663	if (ARCH_BITS != 64)
1664	{
1665	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1666	LogRel(("PGM: Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1667	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1668	}
1669	break;
1670	default:
1671	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1672	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1673	}
1674	rc = pgmR3ModeDataInit(pVM, false /* don't resolve GC and R0 syms yet */);
1675	if (RT_SUCCESS(rc))
1676	{
1677	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1678	#if HC_ARCH_BITS == 64
1679	LogRel(("PGM: HCPhysInterPD=%RHp HCPhysInterPaePDPT=%RHp HCPhysInterPaePML4=%RHp\n",
1680	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1681	LogRel(("PGM: apInterPTs={%RHp,%RHp} apInterPaePTs={%RHp,%RHp} apInterPaePDs={%RHp,%RHp,%RHp,%RHp} pInterPaePDPT64=%RHp\n",
1682	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1683	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1684	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]),
1685	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1686	#endif
1687
1688	/*
1689	* Log the host paging mode. It may come in handy.
1690	*/
1691	const char *pszHostMode;
1692	switch (pVM->pgm.s.enmHostMode)
1693	{
1694	case SUPPAGINGMODE_32_BIT: pszHostMode = "32-bit"; break;
1695	case SUPPAGINGMODE_32_BIT_GLOBAL: pszHostMode = "32-bit+PGE"; break;
1696	case SUPPAGINGMODE_PAE: pszHostMode = "PAE"; break;
1697	case SUPPAGINGMODE_PAE_GLOBAL: pszHostMode = "PAE+PGE"; break;
1698	case SUPPAGINGMODE_PAE_NX: pszHostMode = "PAE+NXE"; break;
1699	case SUPPAGINGMODE_PAE_GLOBAL_NX: pszHostMode = "PAE+PGE+NXE"; break;
1700	case SUPPAGINGMODE_AMD64: pszHostMode = "AMD64"; break;
1701	case SUPPAGINGMODE_AMD64_GLOBAL: pszHostMode = "AMD64+PGE"; break;
1702	case SUPPAGINGMODE_AMD64_NX: pszHostMode = "AMD64+NX"; break;
1703	case SUPPAGINGMODE_AMD64_GLOBAL_NX: pszHostMode = "AMD64+PGE+NX"; break;
1704	default: pszHostMode = "???"; break;
1705	}
1706	LogRel(("PGM: Host paging mode: %s\n", pszHostMode));
1707
1708	return VINF_SUCCESS;
1709	}
1710
1711	LogFlow(("pgmR3InitPaging: returns %Rrc\n", rc));
1712	return rc;
1713	}
1714
1715
1716	/**
1717	* Init statistics
1718	* @returns VBox status code.
1719	*/
1720	static int pgmR3InitStats(PVM pVM)
1721	{
1722	PPGM pPGM = &pVM->pgm.s;
1723	int rc;
1724
1725	/*
1726	* Release statistics.
1727	*/
1728	/* Common - misc variables */
1729	STAM_REL_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_COUNT, "The total number of pages.");
1730	STAM_REL_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_COUNT, "The number of private pages.");
1731	STAM_REL_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_COUNT, "The number of shared pages.");
1732	STAM_REL_REG(pVM, &pPGM->cReusedSharedPages, STAMTYPE_U32, "/PGM/Page/cReusedSharedPages", STAMUNIT_COUNT, "The number of reused shared pages.");
1733	STAM_REL_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_COUNT, "The number of zero backed pages.");
1734	STAM_REL_REG(pVM, &pPGM->cPureMmioPages, STAMTYPE_U32, "/PGM/Page/cPureMmioPages", STAMUNIT_COUNT, "The number of pure MMIO pages.");
1735	STAM_REL_REG(pVM, &pPGM->cMonitoredPages, STAMTYPE_U32, "/PGM/Page/cMonitoredPages", STAMUNIT_COUNT, "The number of write monitored pages.");
1736	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.");
1737	STAM_REL_REG(pVM, &pPGM->cWriteLockedPages, STAMTYPE_U32, "/PGM/Page/cWriteLockedPages", STAMUNIT_COUNT, "The number of write(/read) locked pages.");
1738	STAM_REL_REG(pVM, &pPGM->cReadLockedPages, STAMTYPE_U32, "/PGM/Page/cReadLockedPages", STAMUNIT_COUNT, "The number of read (only) locked pages.");
1739	STAM_REL_REG(pVM, &pPGM->cBalloonedPages, STAMTYPE_U32, "/PGM/Page/cBalloonedPages", STAMUNIT_COUNT, "The number of ballooned pages.");
1740	STAM_REL_REG(pVM, &pPGM->cHandyPages, STAMTYPE_U32, "/PGM/Page/cHandyPages", STAMUNIT_COUNT, "The number of handy pages (not included in cAllPages).");
1741	STAM_REL_REG(pVM, &pPGM->cLargePages, STAMTYPE_U32, "/PGM/Page/cLargePages", STAMUNIT_COUNT, "The number of large pages allocated (includes disabled).");
1742	STAM_REL_REG(pVM, &pPGM->cLargePagesDisabled, STAMTYPE_U32, "/PGM/Page/cLargePagesDisabled", STAMUNIT_COUNT, "The number of disabled large pages.");
1743	STAM_REL_REG(pVM, &pPGM->cRelocations, STAMTYPE_COUNTER, "/PGM/cRelocations", STAMUNIT_OCCURENCES,"Number of hypervisor relocations.");
1744	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_COUNT, "Number of mapped chunks.");
1745	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_COUNT, "Maximum number of mapped chunks.");
1746	STAM_REL_REG(pVM, &pPGM->cMappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Mapped", STAMUNIT_COUNT, "Number of times we mapped a chunk.");
1747	STAM_REL_REG(pVM, &pPGM->cUnmappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Unmapped", STAMUNIT_COUNT, "Number of times we unmapped a chunk.");
1748
1749	STAM_REL_REG(pVM, &pPGM->StatLargePageReused, STAMTYPE_COUNTER, "/PGM/LargePage/Reused", STAMUNIT_OCCURENCES, "The number of times we've reused a large page.");
1750	STAM_REL_REG(pVM, &pPGM->StatLargePageRefused, STAMTYPE_COUNTER, "/PGM/LargePage/Refused", STAMUNIT_OCCURENCES, "The number of times we couldn't use a large page.");
1751	STAM_REL_REG(pVM, &pPGM->StatLargePageRecheck, STAMTYPE_COUNTER, "/PGM/LargePage/Recheck", STAMUNIT_OCCURENCES, "The number of times we've rechecked a disabled large page.");
1752
1753	STAM_REL_REG(pVM, &pPGM->StatShModCheck, STAMTYPE_PROFILE, "/PGM/ShMod/Check", STAMUNIT_TICKS_PER_CALL, "Profiles the shared module checking.");
1754
1755	/* Live save */
1756	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.fActive, STAMTYPE_U8, "/PGM/LiveSave/fActive", STAMUNIT_COUNT, "Active or not.");
1757	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).");
1758	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesLong, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesLong", STAMUNIT_COUNT, "Longer term dirty page average.");
1759	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesShort, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesShort", STAMUNIT_COUNT, "Short term dirty page average.");
1760	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cPagesPerSecond, STAMTYPE_U32, "/PGM/LiveSave/cPagesPerSecond", STAMUNIT_COUNT, "Pages per second.");
1761	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cSavedPages, STAMTYPE_U64, "/PGM/LiveSave/cSavedPages", STAMUNIT_COUNT, "The total number of saved pages.");
1762	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cReadPages", STAMUNIT_COUNT, "RAM: Ready pages.");
1763	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cDirtyPages", STAMUNIT_COUNT, "RAM: Dirty pages.");
1764	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cZeroPages", STAMUNIT_COUNT, "RAM: Ready zero pages.");
1765	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cMonitoredPages", STAMUNIT_COUNT, "RAM: Write monitored pages.");
1766	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cReadPages", STAMUNIT_COUNT, "ROM: Ready pages.");
1767	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cDirtyPages", STAMUNIT_COUNT, "ROM: Dirty pages.");
1768	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cZeroPages", STAMUNIT_COUNT, "ROM: Ready zero pages.");
1769	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cMonitoredPages", STAMUNIT_COUNT, "ROM: Write monitored pages.");
1770	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cReadPages", STAMUNIT_COUNT, "MMIO2: Ready pages.");
1771	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cDirtyPages", STAMUNIT_COUNT, "MMIO2: Dirty pages.");
1772	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cZeroPages", STAMUNIT_COUNT, "MMIO2: Ready zero pages.");
1773	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cMonitoredPages,STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cMonitoredPages",STAMUNIT_COUNT, "MMIO2: Write monitored pages.");
1774
1775	#ifdef VBOX_WITH_STATISTICS
1776
1777	# define PGM_REG_COUNTER(a, b, c) \
1778	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b); \
1779	AssertRC(rc);
1780
1781	# define PGM_REG_COUNTER_BYTES(a, b, c) \
1782	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, c, b); \
1783	AssertRC(rc);
1784
1785	# define PGM_REG_PROFILE(a, b, c) \
1786	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b); \
1787	AssertRC(rc);
1788
1789	PGMSTATS *pStats = pVM->pgm.s.pStatsR3;
1790
1791	PGM_REG_PROFILE(&pStats->StatAllocLargePage, "/PGM/LargePage/Prof/Alloc", "Time spent by the host OS for large page allocation.");
1792	PGM_REG_PROFILE(&pStats->StatClearLargePage, "/PGM/LargePage/Prof/Clear", "Time spent clearing the newly allocated large pages.");
1793	PGM_REG_COUNTER(&pStats->StatLargePageOverflow, "/PGM/LargePage/Overflow", "The number of times allocating a large page took too long.");
1794	PGM_REG_PROFILE(&pStats->StatR3IsValidLargePage, "/PGM/LargePage/Prof/R3/IsValid", "pgmPhysIsValidLargePage profiling - R3.");
1795	PGM_REG_PROFILE(&pStats->StatRZIsValidLargePage, "/PGM/LargePage/Prof/RZ/IsValid", "pgmPhysIsValidLargePage profiling - RZ.");
1796
1797	PGM_REG_COUNTER(&pStats->StatR3DetectedConflicts, "/PGM/R3/DetectedConflicts", "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1798	PGM_REG_PROFILE(&pStats->StatR3ResolveConflict, "/PGM/R3/ResolveConflict", "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1799	PGM_REG_COUNTER(&pStats->StatR3PhysRead, "/PGM/R3/Phys/Read", "The number of times PGMPhysRead was called.");
1800	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysReadBytes, "/PGM/R3/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1801	PGM_REG_COUNTER(&pStats->StatR3PhysWrite, "/PGM/R3/Phys/Write", "The number of times PGMPhysWrite was called.");
1802	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysWriteBytes, "/PGM/R3/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1803	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleRead, "/PGM/R3/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1804	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleReadBytes, "/PGM/R3/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1805	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleWrite, "/PGM/R3/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1806	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleWriteBytes, "/PGM/R3/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1807
1808	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsRZ", "TLB hits.");
1809	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesRZ", "TLB misses.");
1810	PGM_REG_PROFILE(&pStats->StatChunkAging, "/PGM/ChunkR3Map/Map/Aging", "Chunk aging profiling.");
1811	PGM_REG_PROFILE(&pStats->StatChunkFindCandidate, "/PGM/ChunkR3Map/Map/Find", "Chunk unmap find profiling.");
1812	PGM_REG_PROFILE(&pStats->StatChunkUnmap, "/PGM/ChunkR3Map/Map/Unmap", "Chunk unmap of address space profiling.");
1813	PGM_REG_PROFILE(&pStats->StatChunkMap, "/PGM/ChunkR3Map/Map/Map", "Chunk map of address space profiling.");
1814
1815	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbHits, "/PGM/RZ/Page/MapTlbHits", "TLB hits.");
1816	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbMisses, "/PGM/RZ/Page/MapTlbMisses", "TLB misses.");
1817	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsR3", "TLB hits.");
1818	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesR3", "TLB misses.");
1819	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbHits, "/PGM/R3/Page/MapTlbHits", "TLB hits.");
1820	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbMisses, "/PGM/R3/Page/MapTlbMisses", "TLB misses.");
1821	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushes, "/PGM/R3/Page/MapTlbFlushes", "TLB flushes (all contexts).");
1822	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushEntry, "/PGM/R3/Page/MapTlbFlushEntry", "TLB entry flushes (all contexts).");
1823
1824	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbHits, "/PGM/RZ/RamRange/TlbHits", "TLB hits.");
1825	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbMisses, "/PGM/RZ/RamRange/TlbMisses", "TLB misses.");
1826	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbHits, "/PGM/R3/RamRange/TlbHits", "TLB hits.");
1827	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbMisses, "/PGM/R3/RamRange/TlbMisses", "TLB misses.");
1828
1829	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualUpdate, "/PGM/RZ/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1830	PGM_REG_PROFILE(&pStats->StatRZSyncCR3HandlerVirtualReset, "/PGM/RZ/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1831	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualUpdate, "/PGM/R3/SyncCR3/Handlers/VirtualUpdate", "Profiling of the virtual handler updates.");
1832	PGM_REG_PROFILE(&pStats->StatR3SyncCR3HandlerVirtualReset, "/PGM/R3/SyncCR3/Handlers/VirtualReset", "Profiling of the virtual handler resets.");
1833
1834	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerReset, "/PGM/RZ/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1835	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerReset, "/PGM/R3/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1836	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupHits, "/PGM/RZ/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1837	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupHits, "/PGM/R3/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1838	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupMisses, "/PGM/RZ/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1839	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupMisses, "/PGM/R3/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1840	PGM_REG_PROFILE(&pStats->StatRZVirtHandlerSearchByPhys, "/PGM/RZ/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1841	PGM_REG_PROFILE(&pStats->StatR3VirtHandlerSearchByPhys, "/PGM/R3/VirtHandlerSearchByPhys", "Profiling of pgmHandlerVirtualFindByPhysAddr.");
1842
1843	PGM_REG_COUNTER(&pStats->StatRZPageReplaceShared, "/PGM/RZ/Page/ReplacedShared", "Times a shared page was replaced.");
1844	PGM_REG_COUNTER(&pStats->StatRZPageReplaceZero, "/PGM/RZ/Page/ReplacedZero", "Times the zero page was replaced.");
1845	/// @todo PGM_REG_COUNTER(&pStats->StatRZPageHandyAllocs, "/PGM/RZ/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1846	PGM_REG_COUNTER(&pStats->StatR3PageReplaceShared, "/PGM/R3/Page/ReplacedShared", "Times a shared page was replaced.");
1847	PGM_REG_COUNTER(&pStats->StatR3PageReplaceZero, "/PGM/R3/Page/ReplacedZero", "Times the zero page was replaced.");
1848	/// @todo PGM_REG_COUNTER(&pStats->StatR3PageHandyAllocs, "/PGM/R3/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1849
1850	PGM_REG_COUNTER(&pStats->StatRZPhysRead, "/PGM/RZ/Phys/Read", "The number of times PGMPhysRead was called.");
1851	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysReadBytes, "/PGM/RZ/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1852	PGM_REG_COUNTER(&pStats->StatRZPhysWrite, "/PGM/RZ/Phys/Write", "The number of times PGMPhysWrite was called.");
1853	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysWriteBytes, "/PGM/RZ/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1854	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleRead, "/PGM/RZ/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1855	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleReadBytes, "/PGM/RZ/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1856	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleWrite, "/PGM/RZ/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1857	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleWriteBytes, "/PGM/RZ/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1858
1859	/* GC only: */
1860	PGM_REG_COUNTER(&pStats->StatRCInvlPgConflict, "/PGM/RC/InvlPgConflict", "Number of times PGMInvalidatePage() detected a mapping conflict.");
1861	PGM_REG_COUNTER(&pStats->StatRCInvlPgSyncMonCR3, "/PGM/RC/InvlPgSyncMonitorCR3", "Number of times PGMInvalidatePage() ran into PGM_SYNC_MONITOR_CR3.");
1862
1863	PGM_REG_COUNTER(&pStats->StatRCPhysRead, "/PGM/RC/Phys/Read", "The number of times PGMPhysRead was called.");
1864	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysReadBytes, "/PGM/RC/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1865	PGM_REG_COUNTER(&pStats->StatRCPhysWrite, "/PGM/RC/Phys/Write", "The number of times PGMPhysWrite was called.");
1866	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysWriteBytes, "/PGM/RC/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1867	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleRead, "/PGM/RC/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1868	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleReadBytes, "/PGM/RC/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1869	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleWrite, "/PGM/RC/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1870	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleWriteBytes, "/PGM/RC/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1871
1872	PGM_REG_COUNTER(&pStats->StatTrackVirgin, "/PGM/Track/Virgin", "The number of first time shadowings");
1873	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.");
1874	PGM_REG_COUNTER(&pStats->StatTrackAliasedMany, "/PGM/Track/AliasedMany", "The number of times we're tracking using cRef2.");
1875	PGM_REG_COUNTER(&pStats->StatTrackAliasedLots, "/PGM/Track/AliasedLots", "The number of times we're hitting pages which has overflowed cRef2");
1876	PGM_REG_COUNTER(&pStats->StatTrackOverflows, "/PGM/Track/Overflows", "The number of times the extent list grows too long.");
1877	PGM_REG_COUNTER(&pStats->StatTrackNoExtentsLeft, "/PGM/Track/NoExtentLeft", "The number of times the extent list was exhausted.");
1878	PGM_REG_PROFILE(&pStats->StatTrackDeref, "/PGM/Track/Deref", "Profiling of SyncPageWorkerTrackDeref (expensive).");
1879
1880	# undef PGM_REG_COUNTER
1881	# undef PGM_REG_PROFILE
1882	#endif
1883
1884	/*
1885	* Note! The layout below matches the member layout exactly!
1886	*/
1887
1888	/*
1889	* Common - stats
1890	*/
1891	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1892	{
1893	PPGMCPU pPgmCpu = &pVM->aCpus[idCpu].pgm.s;
1894
1895	#define PGM_REG_COUNTER(a, b, c) \
1896	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b, idCpu); \
1897	AssertRC(rc);
1898	#define PGM_REG_PROFILE(a, b, c) \
1899	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b, idCpu); \
1900	AssertRC(rc);
1901
1902	PGM_REG_COUNTER(&pPgmCpu->cGuestModeChanges, "/PGM/CPU%u/cGuestModeChanges", "Number of guest mode changes.");
1903	PGM_REG_COUNTER(&pPgmCpu->cA20Changes, "/PGM/CPU%u/cA20Changes", "Number of A20 gate changes.");
1904
1905	#ifdef VBOX_WITH_STATISTICS
1906	PGMCPUSTATS *pCpuStats = pVM->aCpus[idCpu].pgm.s.pStatsR3;
1907
1908	# if 0 /* rarely useful; leave for debugging. */
1909	for (unsigned j = 0; j < RT_ELEMENTS(pPgmCpu->StatSyncPtPD); j++)
1910	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1911	"The number of SyncPT per PD n.", "/PGM/CPU%u/PDSyncPT/%04X", i, j);
1912	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatSyncPagePD); j++)
1913	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1914	"The number of SyncPage per PD n.", "/PGM/CPU%u/PDSyncPage/%04X", i, j);
1915	# endif
1916	/* R0 only: */
1917	PGM_REG_PROFILE(&pCpuStats->StatR0NpMiscfg, "/PGM/CPU%u/R0/NpMiscfg", "PGMR0Trap0eHandlerNPMisconfig() profiling.");
1918	PGM_REG_COUNTER(&pCpuStats->StatR0NpMiscfgSyncPage, "/PGM/CPU%u/R0/NpMiscfgSyncPage", "SyncPage calls from PGMR0Trap0eHandlerNPMisconfig().");
1919
1920	/* RZ only: */
1921	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0e, "/PGM/CPU%u/RZ/Trap0e", "Profiling of the PGMTrap0eHandler() body.");
1922	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.");
1923	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2CSAM, "/PGM/CPU%u/RZ/Trap0e/Time2/CSAM", "Profiling of the Trap0eHandler body when the cause is CSAM.");
1924	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.");
1925	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2GuestTrap, "/PGM/CPU%u/RZ/Trap0e/Time2/GuestTrap", "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1926	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerPhysical", "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1927	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndVirt, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerVirtual", "Profiling of the Trap0eHandler body when the cause is a virtual handler.");
1928	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.");
1929	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.");
1930	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.");
1931	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.");
1932	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Misc, "/PGM/CPU%u/RZ/Trap0e/Time2/Misc", "Profiling of the Trap0eHandler body when the cause is not known.");
1933	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.");
1934	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.");
1935	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.");
1936	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.");
1937	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.");
1938	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2WPEmulation, "/PGM/CPU%u/RZ/Trap0e/Time2/WPEmulation", "Profiling of the Trap0eHandler body when the cause is CR0.WP emulation.");
1939	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Wp0RoUsHack, "/PGM/CPU%u/RZ/Trap0e/Time2/WP0R0USHack", "Profiling of the Trap0eHandler body when the cause is CR0.WP and netware hack to be enabled.");
1940	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Wp0RoUsUnhack, "/PGM/CPU%u/RZ/Trap0e/Time2/WP0R0USUnhack", "Profiling of the Trap0eHandler body when the cause is CR0.WP and netware hack to be disabled.");
1941	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eConflicts, "/PGM/CPU%u/RZ/Trap0e/Conflicts", "The number of times #PF was caused by an undetected conflict.");
1942	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersMapping, "/PGM/CPU%u/RZ/Trap0e/Handlers/Mapping", "Number of traps due to access handlers in mappings.");
1943	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersOutOfSync, "/PGM/CPU%u/RZ/Trap0e/Handlers/OutOfSync", "Number of traps due to out-of-sync handled pages.");
1944	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAll, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAll", "Number of traps due to physical all-access handlers.");
1945	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAllOpt, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAllOpt", "Number of the physical all-access handler traps using the optimization.");
1946	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysWrite, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysWrite", "Number of traps due to physical write-access handlers.");
1947	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtual, "/PGM/CPU%u/RZ/Trap0e/Handlers/Virtual", "Number of traps due to virtual access handlers.");
1948	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersVirtualByPhys, "/PGM/CPU%u/RZ/Trap0e/Handlers/VirtualByPhys", "Number of traps due to virtual access handlers by physical address.");
1949	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).");
1950	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersUnhandled, "/PGM/CPU%u/RZ/Trap0e/Handlers/Unhandled", "Number of traps due to access outside range of monitored page(s).");
1951	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersInvalid, "/PGM/CPU%u/RZ/Trap0e/Handlers/Invalid", "Number of traps due to access to invalid physical memory.");
1952	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPRead", "Number of user mode not present read page faults.");
1953	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPWrite", "Number of user mode not present write page faults.");
1954	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/Write", "Number of user mode write page faults.");
1955	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSReserved, "/PGM/CPU%u/RZ/Trap0e/Err/User/Reserved", "Number of user mode reserved bit page faults.");
1956	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/User/NXE", "Number of user mode NXE page faults.");
1957	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/Read", "Number of user mode read page faults.");
1958	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPRead", "Number of supervisor mode not present read page faults.");
1959	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPWrite", "Number of supervisor mode not present write page faults.");
1960	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Write", "Number of supervisor mode write page faults.");
1961	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVReserved, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Reserved", "Number of supervisor mode reserved bit page faults.");
1962	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NXE", "Number of supervisor mode NXE page faults.");
1963	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPF, "/PGM/CPU%u/RZ/Trap0e/GuestPF", "Number of real guest page faults.");
1964	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPFMapping, "/PGM/CPU%u/RZ/Trap0e/GuestPF/InMapping", "Number of real guest page faults in a mapping.");
1965	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulInRZ, "/PGM/CPU%u/RZ/Trap0e/WP/InRZ", "Number of guest page faults due to X86_CR0_WP emulation.");
1966	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).");
1967	#if 0 /* rarely useful; leave for debugging. */
1968	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatRZTrap0ePD); j++)
1969	STAMR3RegisterF(pVM, &pCpuStats->StatRZTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1970	"The number of traps in page directory n.", "/PGM/CPU%u/RZ/Trap0e/PD/%04X", i, j);
1971	#endif
1972	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteHandled, "/PGM/CPU%u/RZ/CR3WriteHandled", "The number of times the Guest CR3 change was successfully handled.");
1973	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteUnhandled, "/PGM/CPU%u/RZ/CR3WriteUnhandled", "The number of times the Guest CR3 change was passed back to the recompiler.");
1974	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteConflict, "/PGM/CPU%u/RZ/CR3WriteConflict", "The number of times the Guest CR3 monitoring detected a conflict.");
1975	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteHandled, "/PGM/CPU%u/RZ/ROMWriteHandled", "The number of times the Guest ROM change was successfully handled.");
1976	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteUnhandled, "/PGM/CPU%u/RZ/ROMWriteUnhandled", "The number of times the Guest ROM change was passed back to the recompiler.");
1977
1978	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapMigrateInvlPg, "/PGM/CPU%u/RZ/DynMap/MigrateInvlPg", "invlpg count in PGMR0DynMapMigrateAutoSet.");
1979	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapGCPageInl, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl", "Calls to pgmR0DynMapGCPageInlined.");
1980	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Hits", "Hash table lookup hits.");
1981	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Misses", "Misses that falls back to the code common.");
1982	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamHits", "1st ram range hits.");
1983	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamMisses", "1st ram range misses, takes slow path.");
1984	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPageInl, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl", "Calls to pgmRZDynMapHCPageInlined.");
1985	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Hits", "Hash table lookup hits.");
1986	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Misses", "Misses that falls back to the code common.");
1987	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPage, "/PGM/CPU%u/RZ/DynMap/Page", "Calls to pgmR0DynMapPage");
1988	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetOptimize, "/PGM/CPU%u/RZ/DynMap/Page/SetOptimize", "Calls to pgmRZDynMapOptimizeAutoSet.");
1989	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchFlushes, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchFlushes", "Set search restoring to subset flushes.");
1990	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchHits, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchHits", "Set search hits.");
1991	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchMisses, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchMisses", "Set search misses.");
1992	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPage, "/PGM/CPU%u/RZ/DynMap/Page/HCPage", "Calls to pgmRZDynMapHCPageCommon (ring-0).");
1993	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits0, "/PGM/CPU%u/RZ/DynMap/Page/Hits0", "Hits at iPage+0");
1994	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits1, "/PGM/CPU%u/RZ/DynMap/Page/Hits1", "Hits at iPage+1");
1995	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits2, "/PGM/CPU%u/RZ/DynMap/Page/Hits2", "Hits at iPage+2");
1996	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageInvlPg, "/PGM/CPU%u/RZ/DynMap/Page/InvlPg", "invlpg count in pgmR0DynMapPageSlow.");
1997	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlow, "/PGM/CPU%u/RZ/DynMap/Page/Slow", "Calls to pgmR0DynMapPageSlow - subtract this from pgmR0DynMapPage to get 1st level hits.");
1998	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopHits, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopHits" , "Hits in the loop path.");
1999	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopMisses, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopMisses", "Misses in the loop path. NonLoopMisses = Slow - SlowLoopHit - SlowLoopMisses");
2000	//PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLostHits, "/PGM/CPU%u/R0/DynMap/Page/SlowLostHits", "Lost hits.");
2001	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSubsets, "/PGM/CPU%u/RZ/DynMap/Subsets", "Times PGMRZDynMapPushAutoSubset was called.");
2002	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPopFlushes, "/PGM/CPU%u/RZ/DynMap/SubsetPopFlushes", "Times PGMRZDynMapPopAutoSubset flushes the subset.");
2003	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[0], "/PGM/CPU%u/RZ/DynMap/SetFilledPct000..09", "00-09% filled (RC: min(set-size, dynmap-size))");
2004	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[1], "/PGM/CPU%u/RZ/DynMap/SetFilledPct010..19", "10-19% filled (RC: min(set-size, dynmap-size))");
2005	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[2], "/PGM/CPU%u/RZ/DynMap/SetFilledPct020..29", "20-29% filled (RC: min(set-size, dynmap-size))");
2006	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[3], "/PGM/CPU%u/RZ/DynMap/SetFilledPct030..39", "30-39% filled (RC: min(set-size, dynmap-size))");
2007	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[4], "/PGM/CPU%u/RZ/DynMap/SetFilledPct040..49", "40-49% filled (RC: min(set-size, dynmap-size))");
2008	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[5], "/PGM/CPU%u/RZ/DynMap/SetFilledPct050..59", "50-59% filled (RC: min(set-size, dynmap-size))");
2009	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[6], "/PGM/CPU%u/RZ/DynMap/SetFilledPct060..69", "60-69% filled (RC: min(set-size, dynmap-size))");
2010	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[7], "/PGM/CPU%u/RZ/DynMap/SetFilledPct070..79", "70-79% filled (RC: min(set-size, dynmap-size))");
2011	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[8], "/PGM/CPU%u/RZ/DynMap/SetFilledPct080..89", "80-89% filled (RC: min(set-size, dynmap-size))");
2012	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[9], "/PGM/CPU%u/RZ/DynMap/SetFilledPct090..99", "90-99% filled (RC: min(set-size, dynmap-size))");
2013	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[10], "/PGM/CPU%u/RZ/DynMap/SetFilledPct100", "100% filled (RC: min(set-size, dynmap-size))");
2014
2015	/* HC only: */
2016
2017	/* RZ & R3: */
2018	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3, "/PGM/CPU%u/RZ/SyncCR3", "Profiling of the PGMSyncCR3() body.");
2019	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3Handlers, "/PGM/CPU%u/RZ/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
2020	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3Global, "/PGM/CPU%u/RZ/SyncCR3/Global", "The number of global CR3 syncs.");
2021	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3NotGlobal, "/PGM/CPU%u/RZ/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
2022	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstCacheHit, "/PGM/CPU%u/RZ/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
2023	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreed, "/PGM/CPU%u/RZ/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
2024	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.");
2025	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.");
2026	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
2027	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.");
2028	PGM_REG_PROFILE(&pCpuStats->StatRZSyncPT, "/PGM/CPU%u/RZ/SyncPT", "Profiling of the pfnSyncPT() body.");
2029	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPTFailed, "/PGM/CPU%u/RZ/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
2030	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4K, "/PGM/CPU%u/RZ/SyncPT/4K", "Nr of 4K PT syncs");
2031	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4M, "/PGM/CPU%u/RZ/SyncPT/4M", "Nr of 4M PT syncs");
2032	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.");
2033	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDOutOfSync, "/PGM/CPU%u/RZ/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
2034	PGM_REG_COUNTER(&pCpuStats->StatRZAccessedPage, "/PGM/CPU%u/RZ/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
2035	PGM_REG_PROFILE(&pCpuStats->StatRZDirtyBitTracking, "/PGM/CPU%u/RZ/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
2036	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPage, "/PGM/CPU%u/RZ/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
2037	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageBig, "/PGM/CPU%u/RZ/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
2038	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageSkipped, "/PGM/CPU%u/RZ/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
2039	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageTrap, "/PGM/CPU%u/RZ/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
2040	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageStale, "/PGM/CPU%u/RZ/DirtyPage/Stale", "The number of traps generated for dirty bit tracking (stale tlb entries).");
2041	PGM_REG_COUNTER(&pCpuStats->StatRZDirtiedPage, "/PGM/CPU%u/RZ/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
2042	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyTrackRealPF, "/PGM/CPU%u/RZ/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
2043	PGM_REG_COUNTER(&pCpuStats->StatRZPageAlreadyDirty, "/PGM/CPU%u/RZ/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
2044	PGM_REG_PROFILE(&pCpuStats->StatRZInvalidatePage, "/PGM/CPU%u/RZ/InvalidatePage", "PGMInvalidatePage() profiling.");
2045	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4KBPages, "/PGM/CPU%u/RZ/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
2046	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPages, "/PGM/CPU%u/RZ/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
2047	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPagesSkip, "/PGM/CPU%u/RZ/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
2048	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).");
2049	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNAs, "/PGM/CPU%u/RZ/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
2050	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNPs, "/PGM/CPU%u/RZ/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
2051	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.");
2052	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePageSizeChanges, "/PGM/CPU%u/RZ/InvalidatePage/SizeChanges", "The number of times PGMInvalidatePage() was called on a page size change (4KB <-> 2/4MB).");
2053	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.");
2054	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.");
2055	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.");
2056	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.");
2057	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.");
2058	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncBallloon, "/PGM/CPU%u/RZ/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
2059	PGM_REG_PROFILE(&pCpuStats->StatRZPrefetch, "/PGM/CPU%u/RZ/Prefetch", "PGMPrefetchPage profiling.");
2060	PGM_REG_PROFILE(&pCpuStats->StatRZFlushTLB, "/PGM/CPU%u/RZ/FlushTLB", "Profiling of the PGMFlushTLB() body.");
2061	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)");
2062	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3Global, "/PGM/CPU%u/RZ/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
2063	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)");
2064	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3Global, "/PGM/CPU%u/RZ/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
2065	PGM_REG_PROFILE(&pCpuStats->StatRZGstModifyPage, "/PGM/CPU%u/RZ/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
2066
2067	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3, "/PGM/CPU%u/R3/SyncCR3", "Profiling of the PGMSyncCR3() body.");
2068	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3Handlers, "/PGM/CPU%u/R3/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
2069	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3Global, "/PGM/CPU%u/R3/SyncCR3/Global", "The number of global CR3 syncs.");
2070	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3NotGlobal, "/PGM/CPU%u/R3/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
2071	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstCacheHit, "/PGM/CPU%u/R3/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
2072	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreed, "/PGM/CPU%u/R3/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
2073	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.");
2074	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.");
2075	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
2076	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.");
2077	PGM_REG_PROFILE(&pCpuStats->StatR3SyncPT, "/PGM/CPU%u/R3/SyncPT", "Profiling of the pfnSyncPT() body.");
2078	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPTFailed, "/PGM/CPU%u/R3/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
2079	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4K, "/PGM/CPU%u/R3/SyncPT/4K", "Nr of 4K PT syncs");
2080	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4M, "/PGM/CPU%u/R3/SyncPT/4M", "Nr of 4M PT syncs");
2081	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.");
2082	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDOutOfSync, "/PGM/CPU%u/R3/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
2083	PGM_REG_COUNTER(&pCpuStats->StatR3AccessedPage, "/PGM/CPU%u/R3/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
2084	PGM_REG_PROFILE(&pCpuStats->StatR3DirtyBitTracking, "/PGM/CPU%u/R3/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
2085	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPage, "/PGM/CPU%u/R3/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
2086	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageBig, "/PGM/CPU%u/R3/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
2087	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageSkipped, "/PGM/CPU%u/R3/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
2088	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageTrap, "/PGM/CPU%u/R3/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
2089	PGM_REG_COUNTER(&pCpuStats->StatR3DirtiedPage, "/PGM/CPU%u/R3/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
2090	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyTrackRealPF, "/PGM/CPU%u/R3/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
2091	PGM_REG_COUNTER(&pCpuStats->StatR3PageAlreadyDirty, "/PGM/CPU%u/R3/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
2092	PGM_REG_PROFILE(&pCpuStats->StatR3InvalidatePage, "/PGM/CPU%u/R3/InvalidatePage", "PGMInvalidatePage() profiling.");
2093	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4KBPages, "/PGM/CPU%u/R3/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
2094	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPages, "/PGM/CPU%u/R3/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
2095	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPagesSkip, "/PGM/CPU%u/R3/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
2096	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).");
2097	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNAs, "/PGM/CPU%u/R3/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
2098	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNPs, "/PGM/CPU%u/R3/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
2099	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.");
2100	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePageSizeChanges, "/PGM/CPU%u/R3/InvalidatePage/SizeChanges", "The number of times PGMInvalidatePage() was called on a page size change (4KB <-> 2/4MB).");
2101	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.");
2102	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.");
2103	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.");
2104	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncBallloon, "/PGM/CPU%u/R3/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
2105	PGM_REG_PROFILE(&pCpuStats->StatR3Prefetch, "/PGM/CPU%u/R3/Prefetch", "PGMPrefetchPage profiling.");
2106	PGM_REG_PROFILE(&pCpuStats->StatR3FlushTLB, "/PGM/CPU%u/R3/FlushTLB", "Profiling of the PGMFlushTLB() body.");
2107	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)");
2108	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3Global, "/PGM/CPU%u/R3/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
2109	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)");
2110	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3Global, "/PGM/CPU%u/R3/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
2111	PGM_REG_PROFILE(&pCpuStats->StatR3GstModifyPage, "/PGM/CPU%u/R3/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
2112	#endif /* VBOX_WITH_STATISTICS */
2113
2114	#undef PGM_REG_PROFILE
2115	#undef PGM_REG_COUNTER
2116
2117	}
2118
2119	return VINF_SUCCESS;
2120	}
2121
2122
2123	/**
2124	* Init the PGM bits that rely on VMMR0 and MM to be fully initialized.
2125	*
2126	* The dynamic mapping area will also be allocated and initialized at this
2127	* time. We could allocate it during PGMR3Init of course, but the mapping
2128	* wouldn't be allocated at that time preventing us from setting up the
2129	* page table entries with the dummy page.
2130	*
2131	* @returns VBox status code.
2132	* @param pVM The cross context VM structure.
2133	*/
2134	VMMR3DECL(int) PGMR3InitDynMap(PVM pVM)
2135	{
2136	RTGCPTR GCPtr;
2137	int rc;
2138
2139	/*
2140	* Reserve space for the dynamic mappings.
2141	*/
2142	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping", &GCPtr);
2143	if (RT_SUCCESS(rc))
2144	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2145
2146	if ( RT_SUCCESS(rc)
2147	&& (pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) != ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT))
2148	{
2149	rc = MMR3HyperReserve(pVM, MM_HYPER_DYNAMIC_SIZE, "Dynamic mapping not crossing", &GCPtr);
2150	if (RT_SUCCESS(rc))
2151	pVM->pgm.s.pbDynPageMapBaseGC = GCPtr;
2152	}
2153	if (RT_SUCCESS(rc))
2154	{
2155	AssertRelease((pVM->pgm.s.pbDynPageMapBaseGC >> X86_PD_PAE_SHIFT) == ((pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE - 1) >> X86_PD_PAE_SHIFT));
2156	MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
2157	}
2158	return rc;
2159	}
2160
2161
2162	/**
2163	* Ring-3 init finalizing.
2164	*
2165	* @returns VBox status code.
2166	* @param pVM The cross context VM structure.
2167	*/
2168	VMMR3DECL(int) PGMR3InitFinalize(PVM pVM)
2169	{
2170	int rc = VERR_IPE_UNINITIALIZED_STATUS; /* (MSC incorrectly thinks it can be usused uninitialized) */
2171
2172	/*
2173	* Reserve space for the dynamic mappings.
2174	* Initialize the dynamic mapping pages with dummy pages to simply the cache.
2175	*/
2176	/* get the pointer to the page table entries. */
2177	PPGMMAPPING pMapping = pgmGetMapping(pVM, pVM->pgm.s.pbDynPageMapBaseGC);
2178	AssertRelease(pMapping);
2179	const uintptr_t off = pVM->pgm.s.pbDynPageMapBaseGC - pMapping->GCPtr;
2180	const unsigned iPT = off >> X86_PD_SHIFT;
2181	const unsigned iPG = (off >> X86_PT_SHIFT) & X86_PT_MASK;
2182	pVM->pgm.s.paDynPageMap32BitPTEsGC = pMapping->aPTs[iPT].pPTRC + iPG * sizeof(pMapping->aPTs[0].pPTR3->a[0]);
2183	pVM->pgm.s.paDynPageMapPaePTEsGC = pMapping->aPTs[iPT].paPaePTsRC + iPG * sizeof(pMapping->aPTs[0].paPaePTsR3->a[0]);
2184
2185	/* init cache area */
2186	RTHCPHYS HCPhysDummy = MMR3PageDummyHCPhys(pVM);
2187	for (uint32_t offDynMap = 0; offDynMap < MM_HYPER_DYNAMIC_SIZE; offDynMap += PAGE_SIZE)
2188	{
2189	rc = PGMMap(pVM, pVM->pgm.s.pbDynPageMapBaseGC + offDynMap, HCPhysDummy, PAGE_SIZE, 0);
2190	AssertRCReturn(rc, rc);
2191	}
2192
2193	/*
2194	* Determine the max physical address width (MAXPHYADDR) and apply it to
2195	* all the mask members and stuff.
2196	*/
2197	uint32_t cMaxPhysAddrWidth;
2198	uint32_t uMaxExtLeaf = ASMCpuId_EAX(0x80000000);
2199	if ( uMaxExtLeaf >= 0x80000008
2200	&& uMaxExtLeaf <= 0x80000fff)
2201	{
2202	cMaxPhysAddrWidth = ASMCpuId_EAX(0x80000008) & 0xff;
2203	LogRel(("PGM: The CPU physical address width is %u bits\n", cMaxPhysAddrWidth));
2204	cMaxPhysAddrWidth = RT_MIN(52, cMaxPhysAddrWidth);
2205	pVM->pgm.s.fLessThan52PhysicalAddressBits = cMaxPhysAddrWidth < 52;
2206	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 52; iBit++)
2207	pVM->pgm.s.HCPhysInvMmioPg \|= RT_BIT_64(iBit);
2208	}
2209	else
2210	{
2211	LogRel(("PGM: ASSUMING CPU physical address width of 48 bits (uMaxExtLeaf=%#x)\n", uMaxExtLeaf));
2212	cMaxPhysAddrWidth = 48;
2213	pVM->pgm.s.fLessThan52PhysicalAddressBits = true;
2214	pVM->pgm.s.HCPhysInvMmioPg \|= UINT64_C(0x000f0000000000);
2215	}
2216
2217	/** @todo query from CPUM. */
2218	pVM->pgm.s.GCPhysInvAddrMask = 0;
2219	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 64; iBit++)
2220	pVM->pgm.s.GCPhysInvAddrMask \|= RT_BIT_64(iBit);
2221
2222	/*
2223	* Initialize the invalid paging entry masks, assuming NX is disabled.
2224	*/
2225	uint64_t fMbzPageFrameMask = pVM->pgm.s.GCPhysInvAddrMask & UINT64_C(0x000ffffffffff000);
2226	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2227	{
2228	PVMCPU pVCpu = &pVM->aCpus[iCpu];
2229
2230	/** @todo The manuals are not entirely clear whether the physical
2231	* address width is relevant. See table 5-9 in the intel
2232	* manual vs the PDE4M descriptions. Write testcase (NP). */
2233	pVCpu->pgm.s.fGst32BitMbzBigPdeMask = ((uint32_t)(fMbzPageFrameMask >> (32 - 13)) & X86_PDE4M_PG_HIGH_MASK)
2234	\| X86_PDE4M_MBZ_MASK;
2235
2236	pVCpu->pgm.s.fGstPaeMbzPteMask = fMbzPageFrameMask \| X86_PTE_PAE_MBZ_MASK_NO_NX;
2237	pVCpu->pgm.s.fGstPaeMbzPdeMask = fMbzPageFrameMask \| X86_PDE_PAE_MBZ_MASK_NO_NX;
2238	pVCpu->pgm.s.fGstPaeMbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_PAE_MBZ_MASK_NO_NX;
2239	pVCpu->pgm.s.fGstPaeMbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_PAE_MBZ_MASK;
2240
2241	pVCpu->pgm.s.fGstAmd64MbzPteMask = fMbzPageFrameMask \| X86_PTE_LM_MBZ_MASK_NO_NX;
2242	pVCpu->pgm.s.fGstAmd64MbzPdeMask = fMbzPageFrameMask \| X86_PDE_LM_MBZ_MASK_NX;
2243	pVCpu->pgm.s.fGstAmd64MbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_LM_MBZ_MASK_NX;
2244	pVCpu->pgm.s.fGstAmd64MbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_LM_MBZ_MASK_NO_NX;
2245	pVCpu->pgm.s.fGstAmd64MbzBigPdpeMask = fMbzPageFrameMask \| X86_PDPE1G_LM_MBZ_MASK_NO_NX;
2246	pVCpu->pgm.s.fGstAmd64MbzPml4eMask = fMbzPageFrameMask \| X86_PML4E_MBZ_MASK_NO_NX;
2247
2248	pVCpu->pgm.s.fGst64ShadowedPteMask = X86_PTE_P \| X86_PTE_RW \| X86_PTE_US \| X86_PTE_G \| X86_PTE_A \| X86_PTE_D;
2249	pVCpu->pgm.s.fGst64ShadowedPdeMask = X86_PDE_P \| X86_PDE_RW \| X86_PDE_US \| X86_PDE_A;
2250	pVCpu->pgm.s.fGst64ShadowedBigPdeMask = X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_A;
2251	pVCpu->pgm.s.fGst64ShadowedBigPde4PteMask =
2252	X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_G \| X86_PDE4M_A \| X86_PDE4M_D;
2253	pVCpu->pgm.s.fGstAmd64ShadowedPdpeMask = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A;
2254	pVCpu->pgm.s.fGstAmd64ShadowedPml4eMask = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A;
2255	}
2256
2257	/*
2258	* Note that AMD uses all the 8 reserved bits for the address (so 40 bits in total);
2259	* Intel only goes up to 36 bits, so we stick to 36 as well.
2260	* Update: More recent intel manuals specifies 40 bits just like AMD.
2261	*/
2262	uint32_t u32Dummy, u32Features;
2263	CPUMGetGuestCpuId(VMMGetCpu(pVM), 1, 0, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
2264	if (u32Features & X86_CPUID_FEATURE_EDX_PSE36)
2265	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(RT_MAX(36, cMaxPhysAddrWidth)) - 1;
2266	else
2267	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1;
2268
2269	/*
2270	* Allocate memory if we're supposed to do that.
2271	*/
2272	if (pVM->pgm.s.fRamPreAlloc)
2273	rc = pgmR3PhysRamPreAllocate(pVM);
2274
2275	//pgmLogState(pVM);
2276	LogRel(("PGM: PGMR3InitFinalize: 4 MB PSE mask %RGp\n", pVM->pgm.s.GCPhys4MBPSEMask));
2277	return rc;
2278	}
2279
2280
2281	/**
2282	* Init phase completed callback.
2283	*
2284	* @returns VBox status code.
2285	* @param pVM The cross context VM structure.
2286	* @param enmWhat What has been completed.
2287	* @thread EMT(0)
2288	*/
2289	VMMR3_INT_DECL(int) PGMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
2290	{
2291	switch (enmWhat)
2292	{
2293	case VMINITCOMPLETED_HM:
2294	#ifdef VBOX_WITH_PCI_PASSTHROUGH
2295	if (pVM->pgm.s.fPciPassthrough)
2296	{
2297	AssertLogRelReturn(pVM->pgm.s.fRamPreAlloc, VERR_PCI_PASSTHROUGH_NO_RAM_PREALLOC);
2298	AssertLogRelReturn(HMIsEnabled(pVM), VERR_PCI_PASSTHROUGH_NO_HM);
2299	AssertLogRelReturn(HMIsNestedPagingActive(pVM), VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING);
2300
2301	/*
2302	* Report assignments to the IOMMU (hope that's good enough for now).
2303	*/
2304	if (pVM->pgm.s.fPciPassthrough)
2305	{
2306	int rc = VMMR3CallR0(pVM, VMMR0_DO_PGM_PHYS_SETUP_IOMMU, 0, NULL);
2307	AssertRCReturn(rc, rc);
2308	}
2309	}
2310	#else
2311	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough, VERR_PGM_PCI_PASSTHRU_MISCONFIG);
2312	#endif
2313	break;
2314
2315	default:
2316	/* shut up gcc */
2317	break;
2318	}
2319
2320	return VINF_SUCCESS;
2321	}
2322
2323
2324	/**
2325	* Applies relocations to data and code managed by this component.
2326	*
2327	* This function will be called at init and whenever the VMM need to relocate it
2328	* self inside the GC.
2329	*
2330	* @param pVM The cross context VM structure.
2331	* @param offDelta Relocation delta relative to old location.
2332	*/
2333	VMMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
2334	{
2335	LogFlow(("PGMR3Relocate %RGv to %RGv\n", pVM->pgm.s.GCPtrCR3Mapping, pVM->pgm.s.GCPtrCR3Mapping + offDelta));
2336
2337	/*
2338	* Paging stuff.
2339	*/
2340	pVM->pgm.s.GCPtrCR3Mapping += offDelta;
2341
2342	pgmR3ModeDataInit(pVM, true /* resolve GC/R0 symbols */);
2343
2344	/* Shadow, guest and both mode switch & relocation for each VCPU. */
2345	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2346	{
2347	PVMCPU pVCpu = &pVM->aCpus[i];
2348
2349	pgmR3ModeDataSwitch(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
2350
2351	PGM_SHW_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2352	PGM_GST_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2353	PGM_BTH_PFN(Relocate, pVCpu)(pVCpu, offDelta);
2354	}
2355
2356	/*
2357	* Trees.
2358	*/
2359	pVM->pgm.s.pTreesRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pTreesR3);
2360
2361	/*
2362	* Ram ranges.
2363	*/
2364	if (pVM->pgm.s.pRamRangesXR3)
2365	{
2366	/* Update the pSelfRC pointers and relink them. */
2367	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2368	if (!(pCur->fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2369	pCur->pSelfRC = MMHyperCCToRC(pVM, pCur);
2370	pgmR3PhysRelinkRamRanges(pVM);
2371
2372	/* Flush the RC TLB. */
2373	for (unsigned i = 0; i < PGM_RAMRANGE_TLB_ENTRIES; i++)
2374	pVM->pgm.s.apRamRangesTlbRC[i] = NIL_RTRCPTR;
2375	}
2376
2377	/*
2378	* Update the pSelfRC pointer of the MMIO2 ram ranges since they might not
2379	* be mapped and thus not included in the above exercise.
2380	*/
2381	for (PPGMREGMMIORANGE pCur = pVM->pgm.s.pRegMmioRangesR3; pCur; pCur = pCur->pNextR3)
2382	if (!(pCur->RamRange.fFlags & PGM_RAM_RANGE_FLAGS_FLOATING))
2383	pCur->RamRange.pSelfRC = MMHyperCCToRC(pVM, &pCur->RamRange);
2384
2385	/*
2386	* Update the two page directories with all page table mappings.
2387	* (One or more of them have changed, that's why we're here.)
2388	*/
2389	pVM->pgm.s.pMappingsRC = MMHyperR3ToRC(pVM, pVM->pgm.s.pMappingsR3);
2390	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur->pNextR3; pCur = pCur->pNextR3)
2391	pCur->pNextRC = MMHyperR3ToRC(pVM, pCur->pNextR3);
2392
2393	/* Relocate GC addresses of Page Tables. */
2394	for (PPGMMAPPING pCur = pVM->pgm.s.pMappingsR3; pCur; pCur = pCur->pNextR3)
2395	{
2396	for (RTHCUINT i = 0; i < pCur->cPTs; i++)
2397	{
2398	pCur->aPTs[i].pPTRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].pPTR3);
2399	pCur->aPTs[i].paPaePTsRC = MMHyperR3ToRC(pVM, pCur->aPTs[i].paPaePTsR3);
2400	}
2401	}
2402
2403	/*
2404	* Dynamic page mapping area.
2405	*/
2406	pVM->pgm.s.paDynPageMap32BitPTEsGC += offDelta;
2407	pVM->pgm.s.paDynPageMapPaePTEsGC += offDelta;
2408	pVM->pgm.s.pbDynPageMapBaseGC += offDelta;
2409
2410	if (pVM->pgm.s.pRCDynMap)
2411	{
2412	pVM->pgm.s.pRCDynMap += offDelta;
2413	PPGMRCDYNMAP pDynMap = (PPGMRCDYNMAP)MMHyperRCToCC(pVM, pVM->pgm.s.pRCDynMap);
2414
2415	pDynMap->paPages += offDelta;
2416	PPGMRCDYNMAPENTRY paPages = (PPGMRCDYNMAPENTRY)MMHyperRCToCC(pVM, pDynMap->paPages);
2417
2418	for (uint32_t iPage = 0; iPage < pDynMap->cPages; iPage++)
2419	{
2420	paPages[iPage].pvPage += offDelta;
2421	paPages[iPage].uPte.pLegacy += offDelta;
2422	paPages[iPage].uPte.pPae += offDelta;
2423	}
2424	}
2425
2426	/*
2427	* The Zero page.
2428	*/
2429	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
2430	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
2431	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR \|\| !HMIsEnabled(pVM));
2432	#else
2433	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR);
2434	#endif
2435
2436	/*
2437	* Physical and virtual handlers.
2438	*/
2439	PGMRELOCHANDLERARGS Args = { offDelta, pVM };
2440	RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3RelocatePhysHandler, &Args);
2441	pVM->pgm.s.pLastPhysHandlerRC = NIL_RTRCPTR;
2442
2443	PPGMPHYSHANDLERTYPEINT pCurPhysType;
2444	RTListOff32ForEach(&pVM->pgm.s.pTreesR3->HeadPhysHandlerTypes, pCurPhysType, PGMPHYSHANDLERTYPEINT, ListNode)
2445	{
2446	if (pCurPhysType->pfnHandlerRC != NIL_RTRCPTR)
2447	pCurPhysType->pfnHandlerRC += offDelta;
2448	if (pCurPhysType->pfnPfHandlerRC != NIL_RTRCPTR)
2449	pCurPhysType->pfnPfHandlerRC += offDelta;
2450	}
2451
2452	#ifdef VBOX_WITH_RAW_MODE
2453	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3RelocateVirtHandler, &Args);
2454	RTAvlroGCPtrDoWithAll(&pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3RelocateHyperVirtHandler, &Args);
2455
2456	PPGMVIRTHANDLERTYPEINT pCurVirtType;
2457	RTListOff32ForEach(&pVM->pgm.s.pTreesR3->HeadVirtHandlerTypes, pCurVirtType, PGMVIRTHANDLERTYPEINT, ListNode)
2458	{
2459	if (pCurVirtType->pfnHandlerRC != NIL_RTRCPTR)
2460	pCurVirtType->pfnHandlerRC += offDelta;
2461	if (pCurVirtType->pfnPfHandlerRC != NIL_RTRCPTR)
2462	pCurVirtType->pfnPfHandlerRC += offDelta;
2463	}
2464	#endif
2465
2466	/*
2467	* The page pool.
2468	*/
2469	pgmR3PoolRelocate(pVM);
2470
2471	#ifdef VBOX_WITH_STATISTICS
2472	/*
2473	* Statistics.
2474	*/
2475	pVM->pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->pgm.s.pStatsR3);
2476	for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
2477	pVM->aCpus[iCpu].pgm.s.pStatsRC = MMHyperCCToRC(pVM, pVM->aCpus[iCpu].pgm.s.pStatsR3);
2478	#endif
2479	}
2480
2481
2482	/**
2483	* Callback function for relocating a physical access handler.
2484	*
2485	* @returns 0 (continue enum)
2486	* @param pNode Pointer to a PGMPHYSHANDLER node.
2487	* @param pvUser Pointer to a PGMRELOCHANDLERARGS.
2488	*/
2489	static DECLCALLBACK(int) pgmR3RelocatePhysHandler(PAVLROGCPHYSNODECORE pNode, void *pvUser)
2490	{
2491	PPGMPHYSHANDLER pHandler = (PPGMPHYSHANDLER)pNode;
2492	PCPGMRELOCHANDLERARGS pArgs = (PCPGMRELOCHANDLERARGS)pvUser;
2493	if (pHandler->pvUserRC >= 0x10000)
2494	pHandler->pvUserRC += pArgs->offDelta;
2495	return 0;
2496	}
2497
2498	#ifdef VBOX_WITH_RAW_MODE
2499
2500	/**
2501	* Callback function for relocating a virtual access handler.
2502	*
2503	* @returns 0 (continue enum)
2504	* @param pNode Pointer to a PGMVIRTHANDLER node.
2505	* @param pvUser Pointer to a PGMRELOCHANDLERARGS.
2506	*/
2507	static DECLCALLBACK(int) pgmR3RelocateVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2508	{
2509	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2510	PCPGMRELOCHANDLERARGS pArgs = (PCPGMRELOCHANDLERARGS)pvUser;
2511	Assert(PGMVIRTANDLER_GET_TYPE(pArgs->pVM, pHandler)->enmKind != PGMVIRTHANDLERKIND_HYPERVISOR);
2512
2513	if ( pHandler->pvUserRC != NIL_RTRCPTR
2514	&& PGMVIRTANDLER_GET_TYPE(pArgs->pVM, pHandler)->fRelocUserRC)
2515	pHandler->pvUserRC += pArgs->offDelta;
2516	return 0;
2517	}
2518
2519
2520	/**
2521	* Callback function for relocating a virtual access handler for the hypervisor mapping.
2522	*
2523	* @returns 0 (continue enum)
2524	* @param pNode Pointer to a PGMVIRTHANDLER node.
2525	* @param pvUser Pointer to a PGMRELOCHANDLERARGS.
2526	*/
2527	static DECLCALLBACK(int) pgmR3RelocateHyperVirtHandler(PAVLROGCPTRNODECORE pNode, void *pvUser)
2528	{
2529	PPGMVIRTHANDLER pHandler = (PPGMVIRTHANDLER)pNode;
2530	PCPGMRELOCHANDLERARGS pArgs = (PCPGMRELOCHANDLERARGS)pvUser;
2531	Assert(PGMVIRTANDLER_GET_TYPE(pArgs->pVM, pHandler)->enmKind == PGMVIRTHANDLERKIND_HYPERVISOR);
2532
2533	if ( pHandler->pvUserRC != NIL_RTRCPTR
2534	&& PGMVIRTANDLER_GET_TYPE(pArgs->pVM, pHandler)->fRelocUserRC)
2535	pHandler->pvUserRC += pArgs->offDelta;
2536	return 0;
2537	}
2538
2539	#endif /* VBOX_WITH_RAW_MODE */
2540
2541	/**
2542	* Resets a virtual CPU when unplugged.
2543	*
2544	* @param pVM The cross context VM structure.
2545	* @param pVCpu The cross context virtual CPU structure.
2546	*/
2547	VMMR3DECL(void) PGMR3ResetCpu(PVM pVM, PVMCPU pVCpu)
2548	{
2549	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2550	AssertRC(rc);
2551	pVCpu->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
2552
2553	rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2554	AssertRC(rc);
2555
2556	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2557
2558	pgmR3PoolResetUnpluggedCpu(pVM, pVCpu);
2559
2560	/*
2561	* Re-init other members.
2562	*/
2563	pVCpu->pgm.s.fA20Enabled = true;
2564	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
2565
2566	/*
2567	* Clear the FFs PGM owns.
2568	*/
2569	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2570	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2571	}
2572
2573
2574	/**
2575	* The VM is being reset.
2576	*
2577	* For the PGM component this means that any PD write monitors
2578	* needs to be removed.
2579	*
2580	* @param pVM The cross context VM structure.
2581	*/
2582	VMMR3_INT_DECL(void) PGMR3Reset(PVM pVM)
2583	{
2584	LogFlow(("PGMR3Reset:\n"));
2585	VM_ASSERT_EMT(pVM);
2586
2587	pgmLock(pVM);
2588
2589	/*
2590	* Unfix any fixed mappings and disable CR3 monitoring.
2591	*/
2592	pVM->pgm.s.fMappingsFixed = false;
2593	pVM->pgm.s.fMappingsFixedRestored = false;
2594	pVM->pgm.s.GCPtrMappingFixed = NIL_RTGCPTR;
2595	pVM->pgm.s.cbMappingFixed = 0;
2596
2597	/*
2598	* Exit the guest paging mode before the pgm pool gets reset.
2599	* Important to clean up the amd64 case.
2600	*/
2601	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2602	{
2603	PVMCPU pVCpu = &pVM->aCpus[i];
2604	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
2605	AssertReleaseRC(rc);
2606	pVCpu->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
2607	}
2608
2609	#ifdef DEBUG
2610	DBGFR3_INFO_LOG_SAFE(pVM, "mappings", NULL);
2611	DBGFR3_INFO_LOG_SAFE(pVM, "handlers", "all nostat");
2612	#endif
2613
2614	/*
2615	* Switch mode back to real mode. (before resetting the pgm pool!)
2616	*/
2617	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2618	{
2619	PVMCPU pVCpu = &pVM->aCpus[i];
2620
2621	int rc = PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL);
2622	AssertReleaseRC(rc);
2623
2624	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
2625	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cA20Changes);
2626	}
2627
2628	/*
2629	* Reset the shadow page pool.
2630	*/
2631	pgmR3PoolReset(pVM);
2632
2633	/*
2634	* Re-init various other members and clear the FFs that PGM owns.
2635	*/
2636	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2637	{
2638	PVMCPU pVCpu = &pVM->aCpus[i];
2639
2640	pVCpu->pgm.s.fGst32BitPageSizeExtension = false;
2641	PGMNotifyNxeChanged(pVCpu, false);
2642
2643	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2644	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
2645
2646	if (!pVCpu->pgm.s.fA20Enabled)
2647	{
2648	pVCpu->pgm.s.fA20Enabled = true;
2649	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
2650	#ifdef PGM_WITH_A20
2651	pVCpu->pgm.s.fSyncFlags \|= PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL;
2652	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2653	pgmR3RefreshShadowModeAfterA20Change(pVCpu);
2654	HMFlushTLB(pVCpu);
2655	#endif
2656	}
2657	}
2658
2659	//pgmLogState(pVM);
2660	pgmUnlock(pVM);
2661	}
2662
2663
2664	/**
2665	* Memory setup after VM construction or reset.
2666	*
2667	* @param pVM The cross context VM structure.
2668	* @param fAtReset Indicates the context, after reset if @c true or after
2669	* construction if @c false.
2670	*/
2671	VMMR3_INT_DECL(void) PGMR3MemSetup(PVM pVM, bool fAtReset)
2672	{
2673	if (fAtReset)
2674	{
2675	pgmLock(pVM);
2676
2677	int rc = pgmR3PhysRamZeroAll(pVM);
2678	AssertReleaseRC(rc);
2679
2680	rc = pgmR3PhysRomReset(pVM);
2681	AssertReleaseRC(rc);
2682
2683	pgmUnlock(pVM);
2684	}
2685	}
2686
2687
2688	#ifdef VBOX_STRICT
2689	/**
2690	* VM state change callback for clearing fNoMorePhysWrites after
2691	* a snapshot has been created.
2692	*/
2693	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PUVM pUVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
2694	{
2695	if ( enmState == VMSTATE_RUNNING
2696	\|\| enmState == VMSTATE_RESUMING)
2697	pUVM->pVM->pgm.s.fNoMorePhysWrites = false;
2698	NOREF(enmOldState); NOREF(pvUser);
2699	}
2700	#endif
2701
2702	/**
2703	* Private API to reset fNoMorePhysWrites.
2704	*/
2705	VMMR3_INT_DECL(void) PGMR3ResetNoMorePhysWritesFlag(PVM pVM)
2706	{
2707	pVM->pgm.s.fNoMorePhysWrites = false;
2708	}
2709
2710	/**
2711	* Terminates the PGM.
2712	*
2713	* @returns VBox status code.
2714	* @param pVM The cross context VM structure.
2715	*/
2716	VMMR3DECL(int) PGMR3Term(PVM pVM)
2717	{
2718	/* Must free shared pages here. */
2719	pgmLock(pVM);
2720	pgmR3PhysRamTerm(pVM);
2721	pgmR3PhysRomTerm(pVM);
2722	pgmUnlock(pVM);
2723
2724	PGMDeregisterStringFormatTypes();
2725	return PDMR3CritSectDelete(&pVM->pgm.s.CritSectX);
2726	}
2727
2728
2729	/**
2730	* Show paging mode.
2731	*
2732	* @param pVM The cross context VM structure.
2733	* @param pHlp The info helpers.
2734	* @param pszArgs "all" (default), "guest", "shadow" or "host".
2735	*/
2736	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2737	{
2738	/* digest argument. */
2739	bool fGuest, fShadow, fHost;
2740	if (pszArgs)
2741	pszArgs = RTStrStripL(pszArgs);
2742	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
2743	fShadow = fHost = fGuest = true;
2744	else
2745	{
2746	fShadow = fHost = fGuest = false;
2747	if (strstr(pszArgs, "guest"))
2748	fGuest = true;
2749	if (strstr(pszArgs, "shadow"))
2750	fShadow = true;
2751	if (strstr(pszArgs, "host"))
2752	fHost = true;
2753	}
2754
2755	PVMCPU pVCpu = VMMGetCpu(pVM);
2756	if (!pVCpu)
2757	pVCpu = &pVM->aCpus[0];
2758
2759
2760	/* print info. */
2761	if (fGuest)
2762	pHlp->pfnPrintf(pHlp, "Guest paging mode (VCPU #%u): %s (changed %RU64 times), A20 %s (changed %RU64 times)\n",
2763	pVCpu->idCpu, PGMGetModeName(pVCpu->pgm.s.enmGuestMode), pVCpu->pgm.s.cGuestModeChanges.c,
2764	pVCpu->pgm.s.fA20Enabled ? "enabled" : "disabled", pVCpu->pgm.s.cA20Changes.c);
2765	if (fShadow)
2766	pHlp->pfnPrintf(pHlp, "Shadow paging mode (VCPU #%u): %s\n", pVCpu->idCpu, PGMGetModeName(pVCpu->pgm.s.enmShadowMode));
2767	if (fHost)
2768	{
2769	const char *psz;
2770	switch (pVM->pgm.s.enmHostMode)
2771	{
2772	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
2773	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
2774	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
2775	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
2776	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
2777	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
2778	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
2779	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
2780	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
2781	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
2782	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
2783	default: psz = "unknown"; break;
2784	}
2785	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
2786	}
2787	}
2788
2789
2790	/**
2791	* Dump registered MMIO ranges to the log.
2792	*
2793	* @param pVM The cross context VM structure.
2794	* @param pHlp The info helpers.
2795	* @param pszArgs Arguments, ignored.
2796	*/
2797	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2798	{
2799	NOREF(pszArgs);
2800	pHlp->pfnPrintf(pHlp,
2801	"RAM ranges (pVM=%p)\n"
2802	"%.s %.s\n",
2803	pVM,
2804	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
2805	sizeof(RTHCPTR) * 2, "pvHC ");
2806
2807	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2808	pHlp->pfnPrintf(pHlp,
2809	"%RGp-%RGp %RHv %s\n",
2810	pCur->GCPhys,
2811	pCur->GCPhysLast,
2812	pCur->pvR3,
2813	pCur->pszDesc);
2814	}
2815
2816
2817	/**
2818	* Dump the page directory to the log.
2819	*
2820	* @param pVM The cross context VM structure.
2821	* @param pHlp The info helpers.
2822	* @param pszArgs Arguments, ignored.
2823	*/
2824	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2825	{
2826	/** @todo SMP support!! */
2827	PVMCPU pVCpu = &pVM->aCpus[0];
2828
2829	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
2830	/* Big pages supported? */
2831	const bool fPSE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PSE);
2832
2833	/* Global pages supported? */
2834	const bool fPGE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE);
2835
2836	NOREF(pszArgs);
2837
2838	/*
2839	* Get page directory addresses.
2840	*/
2841	pgmLock(pVM);
2842	PX86PD pPDSrc = pgmGstGet32bitPDPtr(pVCpu);
2843	Assert(pPDSrc);
2844
2845	/*
2846	* Iterate the page directory.
2847	*/
2848	for (unsigned iPD = 0; iPD < RT_ELEMENTS(pPDSrc->a); iPD++)
2849	{
2850	X86PDE PdeSrc = pPDSrc->a[iPD];
2851	if (PdeSrc.n.u1Present)
2852	{
2853	if (PdeSrc.b.u1Size && fPSE)
2854	pHlp->pfnPrintf(pHlp,
2855	"%04X - %RGp P=%d U=%d RW=%d G=%d - BIG\n",
2856	iPD,
2857	pgmGstGet4MBPhysPage(pVM, PdeSrc),
2858	PdeSrc.b.u1Present, PdeSrc.b.u1User, PdeSrc.b.u1Write, PdeSrc.b.u1Global && fPGE);
2859	else
2860	pHlp->pfnPrintf(pHlp,
2861	"%04X - %RGp P=%d U=%d RW=%d [G=%d]\n",
2862	iPD,
2863	(RTGCPHYS)(PdeSrc.u & X86_PDE_PG_MASK),
2864	PdeSrc.n.u1Present, PdeSrc.n.u1User, PdeSrc.n.u1Write, PdeSrc.b.u1Global && fPGE);
2865	}
2866	}
2867	pgmUnlock(pVM);
2868	}
2869
2870
2871	/**
2872	* Service a VMMCALLRING3_PGM_LOCK call.
2873	*
2874	* @returns VBox status code.
2875	* @param pVM The cross context VM structure.
2876	*/
2877	VMMR3DECL(int) PGMR3LockCall(PVM pVM)
2878	{
2879	int rc = PDMR3CritSectEnterEx(&pVM->pgm.s.CritSectX, true /* fHostCall */);
2880	AssertRC(rc);
2881	return rc;
2882	}
2883
2884
2885	/**
2886	* Converts a PGMMODE value to a PGM_TYPE_* \#define.
2887	*
2888	* @returns PGM_TYPE_*.
2889	* @param pgmMode The mode value to convert.
2890	*/
2891	DECLINLINE(unsigned) pgmModeToType(PGMMODE pgmMode)
2892	{
2893	switch (pgmMode)
2894	{
2895	case PGMMODE_REAL: return PGM_TYPE_REAL;
2896	case PGMMODE_PROTECTED: return PGM_TYPE_PROT;
2897	case PGMMODE_32_BIT: return PGM_TYPE_32BIT;
2898	case PGMMODE_PAE:
2899	case PGMMODE_PAE_NX: return PGM_TYPE_PAE;
2900	case PGMMODE_AMD64:
2901	case PGMMODE_AMD64_NX: return PGM_TYPE_AMD64;
2902	case PGMMODE_NESTED: return PGM_TYPE_NESTED;
2903	case PGMMODE_EPT: return PGM_TYPE_EPT;
2904	default:
2905	AssertFatalMsgFailed(("pgmMode=%d\n", pgmMode));
2906	}
2907	}
2908
2909
2910	/**
2911	* Gets the index into the paging mode data array of a SHW+GST mode.
2912	*
2913	* @returns PGM::paPagingData index.
2914	* @param uShwType The shadow paging mode type.
2915	* @param uGstType The guest paging mode type.
2916	*/
2917	DECLINLINE(unsigned) pgmModeDataIndex(unsigned uShwType, unsigned uGstType)
2918	{
2919	Assert(uShwType >= PGM_TYPE_32BIT && uShwType <= PGM_TYPE_MAX);
2920	Assert(uGstType >= PGM_TYPE_REAL && uGstType <= PGM_TYPE_AMD64);
2921	return (uShwType - PGM_TYPE_32BIT) * (PGM_TYPE_AMD64 - PGM_TYPE_REAL + 1)
2922	+ (uGstType - PGM_TYPE_REAL);
2923	}
2924
2925
2926	/**
2927	* Gets the index into the paging mode data array of a SHW+GST mode.
2928	*
2929	* @returns PGM::paPagingData index.
2930	* @param enmShw The shadow paging mode.
2931	* @param enmGst The guest paging mode.
2932	*/
2933	DECLINLINE(unsigned) pgmModeDataIndexByMode(PGMMODE enmShw, PGMMODE enmGst)
2934	{
2935	Assert(enmShw >= PGMMODE_32_BIT && enmShw <= PGMMODE_MAX);
2936	Assert(enmGst > PGMMODE_INVALID && enmGst < PGMMODE_MAX);
2937	return pgmModeDataIndex(pgmModeToType(enmShw), pgmModeToType(enmGst));
2938	}
2939
2940
2941	/**
2942	* Calculates the max data index.
2943	* @returns The number of entries in the paging data array.
2944	*/
2945	DECLINLINE(unsigned) pgmModeDataMaxIndex(void)
2946	{
2947	return pgmModeDataIndex(PGM_TYPE_MAX, PGM_TYPE_AMD64) + 1;
2948	}
2949
2950
2951	/**
2952	* Initializes the paging mode data kept in PGM::paModeData.
2953	*
2954	* @param pVM The cross context VM structure.
2955	* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
2956	* This is used early in the init process to avoid trouble with PDM
2957	* not being initialized yet.
2958	*/
2959	static int pgmR3ModeDataInit(PVM pVM, bool fResolveGCAndR0)
2960	{
2961	PPGMMODEDATA pModeData;
2962	int rc;
2963
2964	/*
2965	* Allocate the array on the first call.
2966	*/
2967	if (!pVM->pgm.s.paModeData)
2968	{
2969	pVM->pgm.s.paModeData = (PPGMMODEDATA)MMR3HeapAllocZ(pVM, MM_TAG_PGM, sizeof(PGMMODEDATA) * pgmModeDataMaxIndex());
2970	AssertReturn(pVM->pgm.s.paModeData, VERR_NO_MEMORY);
2971	}
2972
2973	/*
2974	* Initialize the array entries.
2975	*/
2976	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_REAL)];
2977	pModeData->uShwType = PGM_TYPE_32BIT;
2978	pModeData->uGstType = PGM_TYPE_REAL;
2979	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2980	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2981	rc = PGM_BTH_NAME_32BIT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2982
2983	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGMMODE_PROTECTED)];
2984	pModeData->uShwType = PGM_TYPE_32BIT;
2985	pModeData->uGstType = PGM_TYPE_PROT;
2986	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2987	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2988	rc = PGM_BTH_NAME_32BIT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2989
2990	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_32BIT, PGM_TYPE_32BIT)];
2991	pModeData->uShwType = PGM_TYPE_32BIT;
2992	pModeData->uGstType = PGM_TYPE_32BIT;
2993	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2994	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2995	rc = PGM_BTH_NAME_32BIT_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
2996
2997	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_REAL)];
2998	pModeData->uShwType = PGM_TYPE_PAE;
2999	pModeData->uGstType = PGM_TYPE_REAL;
3000	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3001	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3002	rc = PGM_BTH_NAME_PAE_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3003
3004	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PROT)];
3005	pModeData->uShwType = PGM_TYPE_PAE;
3006	pModeData->uGstType = PGM_TYPE_PROT;
3007	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3008	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3009	rc = PGM_BTH_NAME_PAE_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3010
3011	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_32BIT)];
3012	pModeData->uShwType = PGM_TYPE_PAE;
3013	pModeData->uGstType = PGM_TYPE_32BIT;
3014	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3015	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3016	rc = PGM_BTH_NAME_PAE_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3017
3018	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_PAE, PGM_TYPE_PAE)];
3019	pModeData->uShwType = PGM_TYPE_PAE;
3020	pModeData->uGstType = PGM_TYPE_PAE;
3021	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3022	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3023	rc = PGM_BTH_NAME_PAE_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3024
3025	#ifdef VBOX_WITH_64_BITS_GUESTS
3026	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_AMD64, PGM_TYPE_AMD64)];
3027	pModeData->uShwType = PGM_TYPE_AMD64;
3028	pModeData->uGstType = PGM_TYPE_AMD64;
3029	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3030	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3031	rc = PGM_BTH_NAME_AMD64_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3032	#endif
3033
3034	/* The nested paging mode. */
3035	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_REAL)];
3036	pModeData->uShwType = PGM_TYPE_NESTED;
3037	pModeData->uGstType = PGM_TYPE_REAL;
3038	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3039	rc = PGM_BTH_NAME_NESTED_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3040
3041	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGMMODE_PROTECTED)];
3042	pModeData->uShwType = PGM_TYPE_NESTED;
3043	pModeData->uGstType = PGM_TYPE_PROT;
3044	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3045	rc = PGM_BTH_NAME_NESTED_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3046
3047	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_32BIT)];
3048	pModeData->uShwType = PGM_TYPE_NESTED;
3049	pModeData->uGstType = PGM_TYPE_32BIT;
3050	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3051	rc = PGM_BTH_NAME_NESTED_32BIT(InitData)(pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3052
3053	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_PAE)];
3054	pModeData->uShwType = PGM_TYPE_NESTED;
3055	pModeData->uGstType = PGM_TYPE_PAE;
3056	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3057	rc = PGM_BTH_NAME_NESTED_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3058
3059	#ifdef VBOX_WITH_64_BITS_GUESTS
3060	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3061	pModeData->uShwType = PGM_TYPE_NESTED;
3062	pModeData->uGstType = PGM_TYPE_AMD64;
3063	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3064	rc = PGM_BTH_NAME_NESTED_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3065	#endif
3066
3067	/* The shadow part of the nested callback mode depends on the host paging mode (AMD-V only). */
3068	switch (pVM->pgm.s.enmHostMode)
3069	{
3070	#if HC_ARCH_BITS == 32
3071	case SUPPAGINGMODE_32_BIT:
3072	case SUPPAGINGMODE_32_BIT_GLOBAL:
3073	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3074	{
3075	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3076	rc = PGM_SHW_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3077	}
3078	# ifdef VBOX_WITH_64_BITS_GUESTS
3079	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3080	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3081	# endif
3082	break;
3083
3084	case SUPPAGINGMODE_PAE:
3085	case SUPPAGINGMODE_PAE_NX:
3086	case SUPPAGINGMODE_PAE_GLOBAL:
3087	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3088	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3089	{
3090	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3091	rc = PGM_SHW_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3092	}
3093	# ifdef VBOX_WITH_64_BITS_GUESTS
3094	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, PGM_TYPE_AMD64)];
3095	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3096	# endif
3097	break;
3098	#endif /* HC_ARCH_BITS == 32 */
3099
3100	#if HC_ARCH_BITS == 64 \|\| defined(RT_OS_DARWIN)
3101	case SUPPAGINGMODE_AMD64:
3102	case SUPPAGINGMODE_AMD64_GLOBAL:
3103	case SUPPAGINGMODE_AMD64_NX:
3104	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3105	# ifdef VBOX_WITH_64_BITS_GUESTS
3106	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_AMD64; i++)
3107	# else
3108	for (unsigned i = PGM_TYPE_REAL; i <= PGM_TYPE_PAE; i++)
3109	# endif
3110	{
3111	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_NESTED, i)];
3112	rc = PGM_SHW_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3113	}
3114	break;
3115	#endif /* HC_ARCH_BITS == 64 \|\| RT_OS_DARWIN */
3116
3117	default:
3118	AssertFailed();
3119	break;
3120	}
3121
3122	/* Extended paging (EPT) / Intel VT-x */
3123	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_REAL)];
3124	pModeData->uShwType = PGM_TYPE_EPT;
3125	pModeData->uGstType = PGM_TYPE_REAL;
3126	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3127	rc = PGM_GST_NAME_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3128	rc = PGM_BTH_NAME_EPT_REAL(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3129
3130	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PROT)];
3131	pModeData->uShwType = PGM_TYPE_EPT;
3132	pModeData->uGstType = PGM_TYPE_PROT;
3133	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3134	rc = PGM_GST_NAME_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3135	rc = PGM_BTH_NAME_EPT_PROT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3136
3137	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_32BIT)];
3138	pModeData->uShwType = PGM_TYPE_EPT;
3139	pModeData->uGstType = PGM_TYPE_32BIT;
3140	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3141	rc = PGM_GST_NAME_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3142	rc = PGM_BTH_NAME_EPT_32BIT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3143
3144	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_PAE)];
3145	pModeData->uShwType = PGM_TYPE_EPT;
3146	pModeData->uGstType = PGM_TYPE_PAE;
3147	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3148	rc = PGM_GST_NAME_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3149	rc = PGM_BTH_NAME_EPT_PAE(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3150
3151	#ifdef VBOX_WITH_64_BITS_GUESTS
3152	pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndex(PGM_TYPE_EPT, PGM_TYPE_AMD64)];
3153	pModeData->uShwType = PGM_TYPE_EPT;
3154	pModeData->uGstType = PGM_TYPE_AMD64;
3155	rc = PGM_SHW_NAME_EPT(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3156	rc = PGM_GST_NAME_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3157	rc = PGM_BTH_NAME_EPT_AMD64(InitData)( pVM, pModeData, fResolveGCAndR0); AssertRCReturn(rc, rc);
3158	#endif
3159	return VINF_SUCCESS;
3160	}
3161
3162
3163	/**
3164	* Switch to different (or relocated in the relocate case) mode data.
3165	*
3166	* @param pVM The cross context VM structure.
3167	* @param pVCpu The cross context virtual CPU structure.
3168	* @param enmShw The shadow paging mode.
3169	* @param enmGst The guest paging mode.
3170	*/
3171	static void pgmR3ModeDataSwitch(PVM pVM, PVMCPU pVCpu, PGMMODE enmShw, PGMMODE enmGst)
3172	{
3173	PPGMMODEDATA pModeData = &pVM->pgm.s.paModeData[pgmModeDataIndexByMode(enmShw, enmGst)];
3174
3175	Assert(pModeData->uGstType == pgmModeToType(enmGst));
3176	Assert(pModeData->uShwType == pgmModeToType(enmShw));
3177
3178	/* shadow */
3179	pVCpu->pgm.s.pfnR3ShwRelocate = pModeData->pfnR3ShwRelocate;
3180	pVCpu->pgm.s.pfnR3ShwExit = pModeData->pfnR3ShwExit;
3181	pVCpu->pgm.s.pfnR3ShwGetPage = pModeData->pfnR3ShwGetPage;
3182	Assert(pVCpu->pgm.s.pfnR3ShwGetPage);
3183	pVCpu->pgm.s.pfnR3ShwModifyPage = pModeData->pfnR3ShwModifyPage;
3184
3185	pVCpu->pgm.s.pfnRCShwGetPage = pModeData->pfnRCShwGetPage;
3186	pVCpu->pgm.s.pfnRCShwModifyPage = pModeData->pfnRCShwModifyPage;
3187
3188	pVCpu->pgm.s.pfnR0ShwGetPage = pModeData->pfnR0ShwGetPage;
3189	pVCpu->pgm.s.pfnR0ShwModifyPage = pModeData->pfnR0ShwModifyPage;
3190
3191
3192	/* guest */
3193	pVCpu->pgm.s.pfnR3GstRelocate = pModeData->pfnR3GstRelocate;
3194	pVCpu->pgm.s.pfnR3GstExit = pModeData->pfnR3GstExit;
3195	pVCpu->pgm.s.pfnR3GstGetPage = pModeData->pfnR3GstGetPage;
3196	pVCpu->pgm.s.pfnR3GstModifyPage = pModeData->pfnR3GstModifyPage;
3197	pVCpu->pgm.s.pfnR3GstGetPDE = pModeData->pfnR3GstGetPDE;
3198	pVCpu->pgm.s.pfnRCGstGetPage = pModeData->pfnRCGstGetPage;
3199	pVCpu->pgm.s.pfnRCGstModifyPage = pModeData->pfnRCGstModifyPage;
3200	pVCpu->pgm.s.pfnRCGstGetPDE = pModeData->pfnRCGstGetPDE;
3201	pVCpu->pgm.s.pfnR0GstGetPage = pModeData->pfnR0GstGetPage;
3202	pVCpu->pgm.s.pfnR0GstModifyPage = pModeData->pfnR0GstModifyPage;
3203	pVCpu->pgm.s.pfnR0GstGetPDE = pModeData->pfnR0GstGetPDE;
3204	Assert(pVCpu->pgm.s.pfnR3GstGetPage);
3205
3206	/* both */
3207	pVCpu->pgm.s.pfnR3BthRelocate = pModeData->pfnR3BthRelocate;
3208	pVCpu->pgm.s.pfnR3BthInvalidatePage = pModeData->pfnR3BthInvalidatePage;
3209	pVCpu->pgm.s.pfnR3BthSyncCR3 = pModeData->pfnR3BthSyncCR3;
3210	Assert(pVCpu->pgm.s.pfnR3BthSyncCR3);
3211	pVCpu->pgm.s.pfnR3BthPrefetchPage = pModeData->pfnR3BthPrefetchPage;
3212	pVCpu->pgm.s.pfnR3BthVerifyAccessSyncPage = pModeData->pfnR3BthVerifyAccessSyncPage;
3213	#ifdef VBOX_STRICT
3214	pVCpu->pgm.s.pfnR3BthAssertCR3 = pModeData->pfnR3BthAssertCR3;
3215	#endif
3216	pVCpu->pgm.s.pfnR3BthMapCR3 = pModeData->pfnR3BthMapCR3;
3217	pVCpu->pgm.s.pfnR3BthUnmapCR3 = pModeData->pfnR3BthUnmapCR3;
3218
3219	pVCpu->pgm.s.pfnRCBthTrap0eHandler = pModeData->pfnRCBthTrap0eHandler;
3220	pVCpu->pgm.s.pfnRCBthInvalidatePage = pModeData->pfnRCBthInvalidatePage;
3221	pVCpu->pgm.s.pfnRCBthSyncCR3 = pModeData->pfnRCBthSyncCR3;
3222	pVCpu->pgm.s.pfnRCBthPrefetchPage = pModeData->pfnRCBthPrefetchPage;
3223	pVCpu->pgm.s.pfnRCBthVerifyAccessSyncPage = pModeData->pfnRCBthVerifyAccessSyncPage;
3224	#ifdef VBOX_STRICT
3225	pVCpu->pgm.s.pfnRCBthAssertCR3 = pModeData->pfnRCBthAssertCR3;
3226	#endif
3227	pVCpu->pgm.s.pfnRCBthMapCR3 = pModeData->pfnRCBthMapCR3;
3228	pVCpu->pgm.s.pfnRCBthUnmapCR3 = pModeData->pfnRCBthUnmapCR3;
3229
3230	pVCpu->pgm.s.pfnR0BthTrap0eHandler = pModeData->pfnR0BthTrap0eHandler;
3231	pVCpu->pgm.s.pfnR0BthInvalidatePage = pModeData->pfnR0BthInvalidatePage;
3232	pVCpu->pgm.s.pfnR0BthSyncCR3 = pModeData->pfnR0BthSyncCR3;
3233	pVCpu->pgm.s.pfnR0BthPrefetchPage = pModeData->pfnR0BthPrefetchPage;
3234	pVCpu->pgm.s.pfnR0BthVerifyAccessSyncPage = pModeData->pfnR0BthVerifyAccessSyncPage;
3235	#ifdef VBOX_STRICT
3236	pVCpu->pgm.s.pfnR0BthAssertCR3 = pModeData->pfnR0BthAssertCR3;
3237	#endif
3238	pVCpu->pgm.s.pfnR0BthMapCR3 = pModeData->pfnR0BthMapCR3;
3239	pVCpu->pgm.s.pfnR0BthUnmapCR3 = pModeData->pfnR0BthUnmapCR3;
3240	}
3241
3242
3243	/**
3244	* Calculates the shadow paging mode.
3245	*
3246	* @returns The shadow paging mode.
3247	* @param pVM The cross context VM structure.
3248	* @param enmGuestMode The guest mode.
3249	* @param enmHostMode The host mode.
3250	* @param enmShadowMode The current shadow mode.
3251	* @param penmSwitcher Where to store the switcher to use.
3252	* VMMSWITCHER_INVALID means no change.
3253	*/
3254	static PGMMODE pgmR3CalcShadowMode(PVM pVM, PGMMODE enmGuestMode, SUPPAGINGMODE enmHostMode, PGMMODE enmShadowMode, VMMSWITCHER *penmSwitcher)
3255	{
3256	VMMSWITCHER enmSwitcher = VMMSWITCHER_INVALID;
3257	switch (enmGuestMode)
3258	{
3259	/*
3260	* When switching to real or protected mode we don't change
3261	* anything since it's likely that we'll switch back pretty soon.
3262	*
3263	* During pgmR3InitPaging we'll end up here with PGMMODE_INVALID
3264	* and is supposed to determine which shadow paging and switcher to
3265	* use during init.
3266	*/
3267	case PGMMODE_REAL:
3268	case PGMMODE_PROTECTED:
3269	if ( enmShadowMode != PGMMODE_INVALID
3270	&& !HMIsEnabled(pVM) /* always switch in hm mode! */)
3271	break; /* (no change) */
3272
3273	switch (enmHostMode)
3274	{
3275	case SUPPAGINGMODE_32_BIT:
3276	case SUPPAGINGMODE_32_BIT_GLOBAL:
3277	enmShadowMode = PGMMODE_32_BIT;
3278	enmSwitcher = VMMSWITCHER_32_TO_32;
3279	break;
3280
3281	case SUPPAGINGMODE_PAE:
3282	case SUPPAGINGMODE_PAE_NX:
3283	case SUPPAGINGMODE_PAE_GLOBAL:
3284	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3285	enmShadowMode = PGMMODE_PAE;
3286	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3287	#ifdef DEBUG_bird
3288	if (RTEnvExist("VBOX_32BIT"))
3289	{
3290	enmShadowMode = PGMMODE_32_BIT;
3291	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3292	}
3293	#endif
3294	break;
3295
3296	case SUPPAGINGMODE_AMD64:
3297	case SUPPAGINGMODE_AMD64_GLOBAL:
3298	case SUPPAGINGMODE_AMD64_NX:
3299	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3300	enmShadowMode = PGMMODE_PAE;
3301	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3302	#ifdef DEBUG_bird
3303	if (RTEnvExist("VBOX_32BIT"))
3304	{
3305	enmShadowMode = PGMMODE_32_BIT;
3306	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3307	}
3308	#endif
3309	break;
3310
3311	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3312	}
3313	break;
3314
3315	case PGMMODE_32_BIT:
3316	switch (enmHostMode)
3317	{
3318	case SUPPAGINGMODE_32_BIT:
3319	case SUPPAGINGMODE_32_BIT_GLOBAL:
3320	enmShadowMode = PGMMODE_32_BIT;
3321	enmSwitcher = VMMSWITCHER_32_TO_32;
3322	break;
3323
3324	case SUPPAGINGMODE_PAE:
3325	case SUPPAGINGMODE_PAE_NX:
3326	case SUPPAGINGMODE_PAE_GLOBAL:
3327	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3328	enmShadowMode = PGMMODE_PAE;
3329	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3330	#ifdef DEBUG_bird
3331	if (RTEnvExist("VBOX_32BIT"))
3332	{
3333	enmShadowMode = PGMMODE_32_BIT;
3334	enmSwitcher = VMMSWITCHER_PAE_TO_32;
3335	}
3336	#endif
3337	break;
3338
3339	case SUPPAGINGMODE_AMD64:
3340	case SUPPAGINGMODE_AMD64_GLOBAL:
3341	case SUPPAGINGMODE_AMD64_NX:
3342	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3343	enmShadowMode = PGMMODE_PAE;
3344	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3345	#ifdef DEBUG_bird
3346	if (RTEnvExist("VBOX_32BIT"))
3347	{
3348	enmShadowMode = PGMMODE_32_BIT;
3349	enmSwitcher = VMMSWITCHER_AMD64_TO_32;
3350	}
3351	#endif
3352	break;
3353
3354	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3355	}
3356	break;
3357
3358	case PGMMODE_PAE:
3359	case PGMMODE_PAE_NX: /** @todo This might require more switchers and guest+both modes. */
3360	switch (enmHostMode)
3361	{
3362	case SUPPAGINGMODE_32_BIT:
3363	case SUPPAGINGMODE_32_BIT_GLOBAL:
3364	enmShadowMode = PGMMODE_PAE;
3365	enmSwitcher = VMMSWITCHER_32_TO_PAE;
3366	break;
3367
3368	case SUPPAGINGMODE_PAE:
3369	case SUPPAGINGMODE_PAE_NX:
3370	case SUPPAGINGMODE_PAE_GLOBAL:
3371	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3372	enmShadowMode = PGMMODE_PAE;
3373	enmSwitcher = VMMSWITCHER_PAE_TO_PAE;
3374	break;
3375
3376	case SUPPAGINGMODE_AMD64:
3377	case SUPPAGINGMODE_AMD64_GLOBAL:
3378	case SUPPAGINGMODE_AMD64_NX:
3379	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3380	enmShadowMode = PGMMODE_PAE;
3381	enmSwitcher = VMMSWITCHER_AMD64_TO_PAE;
3382	break;
3383
3384	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3385	}
3386	break;
3387
3388	case PGMMODE_AMD64:
3389	case PGMMODE_AMD64_NX:
3390	switch (enmHostMode)
3391	{
3392	case SUPPAGINGMODE_32_BIT:
3393	case SUPPAGINGMODE_32_BIT_GLOBAL:
3394	enmShadowMode = PGMMODE_AMD64;
3395	enmSwitcher = VMMSWITCHER_32_TO_AMD64;
3396	break;
3397
3398	case SUPPAGINGMODE_PAE:
3399	case SUPPAGINGMODE_PAE_NX:
3400	case SUPPAGINGMODE_PAE_GLOBAL:
3401	case SUPPAGINGMODE_PAE_GLOBAL_NX:
3402	enmShadowMode = PGMMODE_AMD64;
3403	enmSwitcher = VMMSWITCHER_PAE_TO_AMD64;
3404	break;
3405
3406	case SUPPAGINGMODE_AMD64:
3407	case SUPPAGINGMODE_AMD64_GLOBAL:
3408	case SUPPAGINGMODE_AMD64_NX:
3409	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
3410	enmShadowMode = PGMMODE_AMD64;
3411	enmSwitcher = VMMSWITCHER_AMD64_TO_AMD64;
3412	break;
3413
3414	default: AssertMsgFailed(("enmHostMode=%d\n", enmHostMode)); break;
3415	}
3416	break;
3417
3418
3419	default:
3420	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3421	*penmSwitcher = VMMSWITCHER_INVALID;
3422	return PGMMODE_INVALID;
3423	}
3424	/* Override the shadow mode is nested paging is active. */
3425	pVM->pgm.s.fNestedPaging = HMIsNestedPagingActive(pVM);
3426	if (pVM->pgm.s.fNestedPaging)
3427	enmShadowMode = HMGetShwPagingMode(pVM);
3428
3429	*penmSwitcher = enmSwitcher;
3430	return enmShadowMode;
3431	}
3432
3433
3434	/**
3435	* Performs the actual mode change.
3436	* This is called by PGMChangeMode and pgmR3InitPaging().
3437	*
3438	* @returns VBox status code. May suspend or power off the VM on error, but this
3439	* will trigger using FFs and not status codes.
3440	*
3441	* @param pVM The cross context VM structure.
3442	* @param pVCpu The cross context virtual CPU structure.
3443	* @param enmGuestMode The new guest mode. This is assumed to be different from
3444	* the current mode.
3445	*/
3446	VMMR3DECL(int) PGMR3ChangeMode(PVM pVM, PVMCPU pVCpu, PGMMODE enmGuestMode)
3447	{
3448	#if HC_ARCH_BITS == 32
3449	bool fIsOldGuestPagingMode64Bits = (pVCpu->pgm.s.enmGuestMode >= PGMMODE_AMD64);
3450	#endif
3451	bool fIsNewGuestPagingMode64Bits = (enmGuestMode >= PGMMODE_AMD64);
3452
3453	Log(("PGMR3ChangeMode: Guest mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmGuestMode), PGMGetModeName(enmGuestMode)));
3454	STAM_REL_COUNTER_INC(&pVCpu->pgm.s.cGuestModeChanges);
3455
3456	/*
3457	* Calc the shadow mode and switcher.
3458	*/
3459	VMMSWITCHER enmSwitcher;
3460	PGMMODE enmShadowMode;
3461	enmShadowMode = pgmR3CalcShadowMode(pVM, enmGuestMode, pVM->pgm.s.enmHostMode, pVCpu->pgm.s.enmShadowMode, &enmSwitcher);
3462
3463	#ifdef VBOX_WITH_RAW_MODE
3464	if ( enmSwitcher != VMMSWITCHER_INVALID
3465	&& !HMIsEnabled(pVM))
3466	{
3467	/*
3468	* Select new switcher.
3469	*/
3470	int rc = VMMR3SelectSwitcher(pVM, enmSwitcher);
3471	if (RT_FAILURE(rc))
3472	{
3473	AssertReleaseMsgFailed(("VMMR3SelectSwitcher(%d) -> %Rrc\n", enmSwitcher, rc));
3474	return rc;
3475	}
3476	}
3477	#endif
3478
3479	/*
3480	* Exit old mode(s).
3481	*/
3482	#if HC_ARCH_BITS == 32
3483	/* The nested shadow paging mode for AMD-V does change when running 64 bits guests on 32 bits hosts; typically PAE <-> AMD64 */
3484	const bool fForceShwEnterExit = ( fIsOldGuestPagingMode64Bits != fIsNewGuestPagingMode64Bits
3485	&& enmShadowMode == PGMMODE_NESTED);
3486	#else
3487	const bool fForceShwEnterExit = false;
3488	#endif
3489	/* shadow */
3490	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3491	\|\| fForceShwEnterExit)
3492	{
3493	LogFlow(("PGMR3ChangeMode: Shadow mode: %s -> %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode), PGMGetModeName(enmShadowMode)));
3494	if (PGM_SHW_PFN(Exit, pVCpu))
3495	{
3496	int rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3497	if (RT_FAILURE(rc))
3498	{
3499	AssertMsgFailed(("Exit failed for shadow mode %d: %Rrc\n", pVCpu->pgm.s.enmShadowMode, rc));
3500	return rc;
3501	}
3502	}
3503
3504	}
3505	else
3506	LogFlow(("PGMR3ChangeMode: Shadow mode remains: %s\n", PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3507
3508	/* guest */
3509	if (PGM_GST_PFN(Exit, pVCpu))
3510	{
3511	int rc = PGM_GST_PFN(Exit, pVCpu)(pVCpu);
3512	if (RT_FAILURE(rc))
3513	{
3514	AssertMsgFailed(("Exit failed for guest mode %d: %Rrc\n", pVCpu->pgm.s.enmGuestMode, rc));
3515	return rc;
3516	}
3517	}
3518	pVCpu->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
3519
3520	/*
3521	* Load new paging mode data.
3522	*/
3523	pgmR3ModeDataSwitch(pVM, pVCpu, enmShadowMode, enmGuestMode);
3524
3525	/*
3526	* Enter new shadow mode (if changed).
3527	*/
3528	if ( enmShadowMode != pVCpu->pgm.s.enmShadowMode
3529	\|\| fForceShwEnterExit)
3530	{
3531	int rc;
3532	pVCpu->pgm.s.enmShadowMode = enmShadowMode;
3533	switch (enmShadowMode)
3534	{
3535	case PGMMODE_32_BIT:
3536	rc = PGM_SHW_NAME_32BIT(Enter)(pVCpu, false);
3537	break;
3538	case PGMMODE_PAE:
3539	case PGMMODE_PAE_NX:
3540	rc = PGM_SHW_NAME_PAE(Enter)(pVCpu, false);
3541	break;
3542	case PGMMODE_AMD64:
3543	case PGMMODE_AMD64_NX:
3544	rc = PGM_SHW_NAME_AMD64(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3545	break;
3546	case PGMMODE_NESTED:
3547	rc = PGM_SHW_NAME_NESTED(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3548	break;
3549	case PGMMODE_EPT:
3550	rc = PGM_SHW_NAME_EPT(Enter)(pVCpu, fIsNewGuestPagingMode64Bits);
3551	break;
3552	case PGMMODE_REAL:
3553	case PGMMODE_PROTECTED:
3554	default:
3555	AssertReleaseMsgFailed(("enmShadowMode=%d\n", enmShadowMode));
3556	return VERR_INTERNAL_ERROR;
3557	}
3558	if (RT_FAILURE(rc))
3559	{
3560	AssertReleaseMsgFailed(("Entering enmShadowMode=%d failed: %Rrc\n", enmShadowMode, rc));
3561	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3562	return rc;
3563	}
3564	}
3565
3566	/*
3567	* Always flag the necessary updates
3568	*/
3569	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3570
3571	/*
3572	* Enter the new guest and shadow+guest modes.
3573	*/
3574	int rc = -1;
3575	int rc2 = -1;
3576	RTGCPHYS GCPhysCR3 = NIL_RTGCPHYS;
3577	pVCpu->pgm.s.enmGuestMode = enmGuestMode;
3578	switch (enmGuestMode)
3579	{
3580	case PGMMODE_REAL:
3581	rc = PGM_GST_NAME_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3582	switch (pVCpu->pgm.s.enmShadowMode)
3583	{
3584	case PGMMODE_32_BIT:
3585	rc2 = PGM_BTH_NAME_32BIT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3586	break;
3587	case PGMMODE_PAE:
3588	case PGMMODE_PAE_NX:
3589	rc2 = PGM_BTH_NAME_PAE_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3590	break;
3591	case PGMMODE_NESTED:
3592	rc2 = PGM_BTH_NAME_NESTED_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3593	break;
3594	case PGMMODE_EPT:
3595	rc2 = PGM_BTH_NAME_EPT_REAL(Enter)(pVCpu, NIL_RTGCPHYS);
3596	break;
3597	case PGMMODE_AMD64:
3598	case PGMMODE_AMD64_NX:
3599	AssertMsgFailedBreak(("Should use PAE shadow mode!\n"));
3600	default: AssertFailedBreak();
3601	}
3602	break;
3603
3604	case PGMMODE_PROTECTED:
3605	rc = PGM_GST_NAME_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3606	switch (pVCpu->pgm.s.enmShadowMode)
3607	{
3608	case PGMMODE_32_BIT:
3609	rc2 = PGM_BTH_NAME_32BIT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3610	break;
3611	case PGMMODE_PAE:
3612	case PGMMODE_PAE_NX:
3613	rc2 = PGM_BTH_NAME_PAE_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3614	break;
3615	case PGMMODE_NESTED:
3616	rc2 = PGM_BTH_NAME_NESTED_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3617	break;
3618	case PGMMODE_EPT:
3619	rc2 = PGM_BTH_NAME_EPT_PROT(Enter)(pVCpu, NIL_RTGCPHYS);
3620	break;
3621	case PGMMODE_AMD64:
3622	case PGMMODE_AMD64_NX:
3623	AssertMsgFailedBreak(("Should use PAE shadow mode!\n"));
3624	default: AssertFailedBreak();
3625	}
3626	break;
3627
3628	case PGMMODE_32_BIT:
3629	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAGE_MASK;
3630	rc = PGM_GST_NAME_32BIT(Enter)(pVCpu, GCPhysCR3);
3631	switch (pVCpu->pgm.s.enmShadowMode)
3632	{
3633	case PGMMODE_32_BIT:
3634	rc2 = PGM_BTH_NAME_32BIT_32BIT(Enter)(pVCpu, GCPhysCR3);
3635	break;
3636	case PGMMODE_PAE:
3637	case PGMMODE_PAE_NX:
3638	rc2 = PGM_BTH_NAME_PAE_32BIT(Enter)(pVCpu, GCPhysCR3);
3639	break;
3640	case PGMMODE_NESTED:
3641	rc2 = PGM_BTH_NAME_NESTED_32BIT(Enter)(pVCpu, GCPhysCR3);
3642	break;
3643	case PGMMODE_EPT:
3644	rc2 = PGM_BTH_NAME_EPT_32BIT(Enter)(pVCpu, GCPhysCR3);
3645	break;
3646	case PGMMODE_AMD64:
3647	case PGMMODE_AMD64_NX:
3648	AssertMsgFailedBreak(("Should use PAE shadow mode!\n"));
3649	default: AssertFailedBreak();
3650	}
3651	break;
3652
3653	case PGMMODE_PAE_NX:
3654	case PGMMODE_PAE:
3655	{
3656	uint32_t u32Dummy, u32Features;
3657
3658	CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
3659	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
3660	return VMSetRuntimeError(pVM, VMSETRTERR_FLAGS_FATAL, "PAEmode",
3661	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 (System/Processor)"));
3662
3663	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_PAE_PAGE_MASK;
3664	rc = PGM_GST_NAME_PAE(Enter)(pVCpu, GCPhysCR3);
3665	switch (pVCpu->pgm.s.enmShadowMode)
3666	{
3667	case PGMMODE_PAE:
3668	case PGMMODE_PAE_NX:
3669	rc2 = PGM_BTH_NAME_PAE_PAE(Enter)(pVCpu, GCPhysCR3);
3670	break;
3671	case PGMMODE_NESTED:
3672	rc2 = PGM_BTH_NAME_NESTED_PAE(Enter)(pVCpu, GCPhysCR3);
3673	break;
3674	case PGMMODE_EPT:
3675	rc2 = PGM_BTH_NAME_EPT_PAE(Enter)(pVCpu, GCPhysCR3);
3676	break;
3677	case PGMMODE_32_BIT:
3678	case PGMMODE_AMD64:
3679	case PGMMODE_AMD64_NX:
3680	AssertMsgFailedBreak(("Should use PAE shadow mode!\n"));
3681	default: AssertFailedBreak();
3682	}
3683	break;
3684	}
3685
3686	#ifdef VBOX_WITH_64_BITS_GUESTS
3687	case PGMMODE_AMD64_NX:
3688	case PGMMODE_AMD64:
3689	GCPhysCR3 = CPUMGetGuestCR3(pVCpu) & X86_CR3_AMD64_PAGE_MASK;
3690	rc = PGM_GST_NAME_AMD64(Enter)(pVCpu, GCPhysCR3);
3691	switch (pVCpu->pgm.s.enmShadowMode)
3692	{
3693	case PGMMODE_AMD64:
3694	case PGMMODE_AMD64_NX:
3695	rc2 = PGM_BTH_NAME_AMD64_AMD64(Enter)(pVCpu, GCPhysCR3);
3696	break;
3697	case PGMMODE_NESTED:
3698	rc2 = PGM_BTH_NAME_NESTED_AMD64(Enter)(pVCpu, GCPhysCR3);
3699	break;
3700	case PGMMODE_EPT:
3701	rc2 = PGM_BTH_NAME_EPT_AMD64(Enter)(pVCpu, GCPhysCR3);
3702	break;
3703	case PGMMODE_32_BIT:
3704	case PGMMODE_PAE:
3705	case PGMMODE_PAE_NX:
3706	AssertMsgFailedBreak(("Should use AMD64 shadow mode!\n"));
3707	default: AssertFailedBreak();
3708	}
3709	break;
3710	#endif
3711
3712	default:
3713	AssertReleaseMsgFailed(("enmGuestMode=%d\n", enmGuestMode));
3714	rc = VERR_NOT_IMPLEMENTED;
3715	break;
3716	}
3717
3718	/* Set the new guest CR3. */
3719	pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
3720
3721	/* status codes. */
3722	AssertRC(rc);
3723	AssertRC(rc2);
3724	if (RT_SUCCESS(rc))
3725	{
3726	rc = rc2;
3727	if (RT_SUCCESS(rc)) /* no informational status codes. */
3728	rc = VINF_SUCCESS;
3729	}
3730
3731	/* Notify HM as well. */
3732	HMR3PagingModeChanged(pVM, pVCpu, pVCpu->pgm.s.enmShadowMode, pVCpu->pgm.s.enmGuestMode);
3733	return rc;
3734	}
3735
3736
3737	/**
3738	* Called by pgmPoolFlushAllInt prior to flushing the pool.
3739	*
3740	* @returns VBox status code, fully asserted.
3741	* @param pVCpu The cross context virtual CPU structure.
3742	*/
3743	int pgmR3ExitShadowModeBeforePoolFlush(PVMCPU pVCpu)
3744	{
3745	/* Unmap the old CR3 value before flushing everything. */
3746	int rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
3747	AssertRC(rc);
3748
3749	/* Exit the current shadow paging mode as well; nested paging and EPT use a root CR3 which will get flushed here. */
3750	rc = PGM_SHW_PFN(Exit, pVCpu)(pVCpu);
3751	AssertRC(rc);
3752	Assert(pVCpu->pgm.s.pShwPageCR3R3 == NULL);
3753	return rc;
3754	}
3755
3756
3757	/**
3758	* Called by pgmPoolFlushAllInt after flushing the pool.
3759	*
3760	* @returns VBox status code, fully asserted.
3761	* @param pVM The cross context VM structure.
3762	* @param pVCpu The cross context virtual CPU structure.
3763	*/
3764	int pgmR3ReEnterShadowModeAfterPoolFlush(PVM pVM, PVMCPU pVCpu)
3765	{
3766	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
3767	int rc = PGMR3ChangeMode(pVM, pVCpu, PGMGetGuestMode(pVCpu));
3768	Assert(VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
3769	AssertRCReturn(rc, rc);
3770	AssertRCSuccessReturn(rc, VERR_IPE_UNEXPECTED_INFO_STATUS);
3771
3772	Assert(pVCpu->pgm.s.pShwPageCR3R3 != NULL);
3773	AssertMsg( pVCpu->pgm.s.enmShadowMode >= PGMMODE_NESTED
3774	\|\| CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu),
3775	("%RHp != %RHp %s\n", (RTHCPHYS)CPUMGetHyperCR3(pVCpu), PGMGetHyperCR3(pVCpu), PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
3776	return rc;
3777	}
3778
3779
3780	/**
3781	* Called by PGMR3PhysSetA20 after changing the A20 state.
3782	*
3783	* @param pVCpu The cross context virtual CPU structure.
3784	*/
3785	void pgmR3RefreshShadowModeAfterA20Change(PVMCPU pVCpu)
3786	{
3787	/** @todo Probably doing a bit too much here. */
3788	int rc = pgmR3ExitShadowModeBeforePoolFlush(pVCpu);
3789	AssertReleaseRC(rc);
3790	rc = pgmR3ReEnterShadowModeAfterPoolFlush(pVCpu->CTX_SUFF(pVM), pVCpu);
3791	AssertReleaseRC(rc);
3792	}
3793
3794
3795	#ifdef VBOX_WITH_DEBUGGER
3796
3797	/**
3798	* @callback_method_impl{FNDBGCCMD, The '.pgmerror' and '.pgmerroroff' commands.}
3799	*/
3800	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3801	{
3802	/*
3803	* Validate input.
3804	*/
3805	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3806	PVM pVM = pUVM->pVM;
3807	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 0 \|\| (cArgs == 1 && paArgs[0].enmType == DBGCVAR_TYPE_STRING));
3808
3809	if (!cArgs)
3810	{
3811	/*
3812	* Print the list of error injection locations with status.
3813	*/
3814	DBGCCmdHlpPrintf(pCmdHlp, "PGM error inject locations:\n");
3815	DBGCCmdHlpPrintf(pCmdHlp, " handy - %RTbool\n", pVM->pgm.s.fErrInjHandyPages);
3816	}
3817	else
3818	{
3819	/*
3820	* String switch on where to inject the error.
3821	*/
3822	bool const fNewState = !strcmp(pCmd->pszCmd, "pgmerror");
3823	const char *pszWhere = paArgs[0].u.pszString;
3824	if (!strcmp(pszWhere, "handy"))
3825	ASMAtomicWriteBool(&pVM->pgm.s.fErrInjHandyPages, fNewState);
3826	else
3827	return DBGCCmdHlpPrintf(pCmdHlp, "error: Invalid 'where' value: %s.\n", pszWhere);
3828	DBGCCmdHlpPrintf(pCmdHlp, "done\n");
3829	}
3830	return VINF_SUCCESS;
3831	}
3832
3833
3834	/**
3835	* @callback_method_impl{FNDBGCCMD, The '.pgmsync' command.}
3836	*/
3837	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3838	{
3839	/*
3840	* Validate input.
3841	*/
3842	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3843	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3844	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
3845	if (!pVCpu)
3846	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
3847
3848	/*
3849	* Force page directory sync.
3850	*/
3851	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3852
3853	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Forcing page directory sync.\n");
3854	if (RT_FAILURE(rc))
3855	return rc;
3856
3857	return VINF_SUCCESS;
3858	}
3859
3860	#ifdef VBOX_STRICT
3861
3862	/**
3863	* EMT callback for pgmR3CmdAssertCR3.
3864	*
3865	* @returns VBox status code.
3866	* @param pUVM The user mode VM handle.
3867	* @param pcErrors Where to return the error count.
3868	*/
3869	static DECLCALLBACK(int) pgmR3CmdAssertCR3EmtWorker(PUVM pUVM, unsigned *pcErrors)
3870	{
3871	PVM pVM = pUVM->pVM;
3872	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3873	PVMCPU pVCpu = VMMGetCpu(pVM);
3874
3875	*pcErrors = PGMAssertCR3(pVM, pVCpu, CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu));
3876
3877	return VINF_SUCCESS;
3878	}
3879
3880
3881	/**
3882	* @callback_method_impl{FNDBGCCMD, The '.pgmassertcr3' command.}
3883	*/
3884	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3885	{
3886	/*
3887	* Validate input.
3888	*/
3889	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3890	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3891
3892	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Checking shadow CR3 page tables for consistency.\n");
3893	if (RT_FAILURE(rc))
3894	return rc;
3895
3896	unsigned cErrors = 0;
3897	rc = VMR3ReqCallWaitU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp), (PFNRT)pgmR3CmdAssertCR3EmtWorker, 2, pUVM, &cErrors);
3898	if (RT_FAILURE(rc))
3899	return DBGCCmdHlpFail(pCmdHlp, pCmd, "VMR3ReqCallWaitU failed: %Rrc", rc);
3900	if (cErrors > 0)
3901	return DBGCCmdHlpFail(pCmdHlp, pCmd, "PGMAssertCR3: %u error(s)", cErrors);
3902	return DBGCCmdHlpPrintf(pCmdHlp, "PGMAssertCR3: OK\n");
3903	}
3904
3905	#endif /* VBOX_STRICT */
3906
3907	/**
3908	* @callback_method_impl{FNDBGCCMD, The '.pgmsyncalways' command.}
3909	*/
3910	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3911	{
3912	/*
3913	* Validate input.
3914	*/
3915	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
3916	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3917	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
3918	if (!pVCpu)
3919	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
3920
3921	/*
3922	* Force page directory sync.
3923	*/
3924	int rc;
3925	if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
3926	{
3927	ASMAtomicAndU32(&pVCpu->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
3928	rc = DBGCCmdHlpPrintf(pCmdHlp, "Disabled permanent forced page directory syncing.\n");
3929	}
3930	else
3931	{
3932	ASMAtomicOrU32(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
3933	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
3934	rc = DBGCCmdHlpPrintf(pCmdHlp, "Enabled permanent forced page directory syncing.\n");
3935	}
3936	return rc;
3937	}
3938
3939
3940	/**
3941	* @callback_method_impl{FNDBGCCMD, The '.pgmphystofile' command.}
3942	*/
3943	static DECLCALLBACK(int) pgmR3CmdPhysToFile(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3944	{
3945	/*
3946	* Validate input.
3947	*/
3948	NOREF(pCmd);
3949	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3950	PVM pVM = pUVM->pVM;
3951	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 1 \|\| cArgs == 2);
3952	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType == DBGCVAR_TYPE_STRING);
3953	if (cArgs == 2)
3954	{
3955	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, paArgs[1].enmType == DBGCVAR_TYPE_STRING);
3956	if (strcmp(paArgs[1].u.pszString, "nozero"))
3957	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid 2nd argument '%s', must be 'nozero'.\n", paArgs[1].u.pszString);
3958	}
3959	bool fIncZeroPgs = cArgs < 2;
3960
3961	/*
3962	* Open the output file and get the ram parameters.
3963	*/
3964	RTFILE hFile;
3965	int rc = RTFileOpen(&hFile, paArgs[0].u.pszString, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_WRITE);
3966	if (RT_FAILURE(rc))
3967	return DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileOpen(,'%s',) -> %Rrc.\n", paArgs[0].u.pszString, rc);
3968
3969	uint32_t cbRamHole = 0;
3970	CFGMR3QueryU32Def(CFGMR3GetRootU(pUVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
3971	uint64_t cbRam = 0;
3972	CFGMR3QueryU64Def(CFGMR3GetRootU(pUVM), "RamSize", &cbRam, 0);
3973	RTGCPHYS GCPhysEnd = cbRam + cbRamHole;
3974
3975	/*
3976	* Dump the physical memory, page by page.
3977	*/
3978	RTGCPHYS GCPhys = 0;
3979	char abZeroPg[PAGE_SIZE];
3980	RT_ZERO(abZeroPg);
3981
3982	pgmLock(pVM);
3983	for (PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesXR3;
3984	pRam && pRam->GCPhys < GCPhysEnd && RT_SUCCESS(rc);
3985	pRam = pRam->pNextR3)
3986	{
3987	/* fill the gap */
3988	if (pRam->GCPhys > GCPhys && fIncZeroPgs)
3989	{
3990	while (pRam->GCPhys > GCPhys && RT_SUCCESS(rc))
3991	{
3992	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
3993	GCPhys += PAGE_SIZE;
3994	}
3995	}
3996
3997	PCPGMPAGE pPage = &pRam->aPages[0];
3998	while (GCPhys < pRam->GCPhysLast && RT_SUCCESS(rc))
3999	{
4000	if ( PGM_PAGE_IS_ZERO(pPage)
4001	\|\| PGM_PAGE_IS_BALLOONED(pPage))
4002	{
4003	if (fIncZeroPgs)
4004	{
4005	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
4006	if (RT_FAILURE(rc))
4007	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
4008	}
4009	}
4010	else
4011	{
4012	switch (PGM_PAGE_GET_TYPE(pPage))
4013	{
4014	case PGMPAGETYPE_RAM:
4015	case PGMPAGETYPE_ROM_SHADOW: /* trouble?? */
4016	case PGMPAGETYPE_ROM:
4017	case PGMPAGETYPE_MMIO2:
4018	{
4019	void const *pvPage;
4020	PGMPAGEMAPLOCK Lock;
4021	rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhys, &pvPage, &Lock);
4022	if (RT_SUCCESS(rc))
4023	{
4024	rc = RTFileWrite(hFile, pvPage, PAGE_SIZE, NULL);
4025	PGMPhysReleasePageMappingLock(pVM, &Lock);
4026	if (RT_FAILURE(rc))
4027	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
4028	}
4029	else
4030	DBGCCmdHlpPrintf(pCmdHlp, "error: PGMPhysGCPhys2CCPtrReadOnly -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
4031	break;
4032	}
4033
4034	default:
4035	AssertFailed();
4036	RT_FALL_THRU();
4037	case PGMPAGETYPE_MMIO:
4038	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
4039	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
4040	if (fIncZeroPgs)
4041	{
4042	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
4043	if (RT_FAILURE(rc))
4044	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
4045	}
4046	break;
4047	}
4048	}
4049
4050
4051	/* advance */
4052	GCPhys += PAGE_SIZE;
4053	pPage++;
4054	}
4055	}
4056	pgmUnlock(pVM);
4057
4058	RTFileClose(hFile);
4059	if (RT_SUCCESS(rc))
4060	return DBGCCmdHlpPrintf(pCmdHlp, "Successfully saved physical memory to '%s'.\n", paArgs[0].u.pszString);
4061	return VINF_SUCCESS;
4062	}
4063
4064	#endif /* VBOX_WITH_DEBUGGER */
4065
4066	/**
4067	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
4068	*/
4069	typedef struct PGMCHECKINTARGS
4070	{
4071	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
4072	PPGMPHYSHANDLER pPrevPhys;
4073	#ifdef VBOX_WITH_RAW_MODE
4074	PPGMVIRTHANDLER pPrevVirt;
4075	PPGMPHYS2VIRTHANDLER pPrevPhys2Virt;
4076	#else
4077	void pvFiller1, pvFiller2;
4078	#endif
4079	PVM pVM;
4080	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
4081
4082	/**
4083	* Validate a node in the physical handler tree.
4084	*
4085	* @returns 0 on if ok, other wise 1.
4086	* @param pNode The handler node.
4087	* @param pvUser pVM.
4088	*/
4089	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4090	{
4091	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4092	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
4093	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4094	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,
4095	("pCur=%p %RGp-%RGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4096	AssertReleaseMsg( !pArgs->pPrevPhys
4097	\|\| ( pArgs->fLeftToRight
4098	? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key
4099	: pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
4100	("pPrevPhys=%p %RGp-%RGp %s\n"
4101	" pCur=%p %RGp-%RGp %s\n",
4102	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
4103	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4104	pArgs->pPrevPhys = pCur;
4105	return 0;
4106	}
4107
4108	#ifdef VBOX_WITH_RAW_MODE
4109
4110	/**
4111	* Validate a node in the virtual handler tree.
4112	*
4113	* @returns 0 on if ok, other wise 1.
4114	* @param pNode The handler node.
4115	* @param pvUser pVM.
4116	*/
4117	static DECLCALLBACK(int) pgmR3CheckIntegrityVirtHandlerNode(PAVLROGCPTRNODECORE pNode, void *pvUser)
4118	{
4119	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4120	PPGMVIRTHANDLER pCur = (PPGMVIRTHANDLER)pNode;
4121	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
4122	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGv-%RGv %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4123	AssertReleaseMsg( !pArgs->pPrevVirt
4124	\|\| (pArgs->fLeftToRight ? pArgs->pPrevVirt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevVirt->Core.KeyLast > pCur->Core.Key),
4125	("pPrevVirt=%p %RGv-%RGv %s\n"
4126	" pCur=%p %RGv-%RGv %s\n",
4127	pArgs->pPrevVirt, pArgs->pPrevVirt->Core.Key, pArgs->pPrevVirt->Core.KeyLast, pArgs->pPrevVirt->pszDesc,
4128	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
4129	for (unsigned iPage = 0; iPage < pCur->cPages; iPage++)
4130	{
4131	AssertReleaseMsg(pCur->aPhysToVirt[iPage].offVirtHandler == -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage]),
4132	("pCur=%p %RGv-%RGv %s\n"
4133	"iPage=%d offVirtHandle=%#x expected %#x\n",
4134	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc,
4135	iPage, pCur->aPhysToVirt[iPage].offVirtHandler, -RT_OFFSETOF(PGMVIRTHANDLER, aPhysToVirt[iPage])));
4136	}
4137	pArgs->pPrevVirt = pCur;
4138	return 0;
4139	}
4140
4141
4142	/**
4143	* Validate a node in the virtual handler tree.
4144	*
4145	* @returns 0 on if ok, other wise 1.
4146	* @param pNode The handler node.
4147	* @param pvUser pVM.
4148	*/
4149	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysToVirtHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
4150	{
4151	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
4152	PPGMPHYS2VIRTHANDLER pCur = (PPGMPHYS2VIRTHANDLER)pNode;
4153	AssertReleaseMsgReturn(!((uintptr_t)pCur & 3), ("\n"), 1);
4154	AssertReleaseMsgReturn(!(pCur->offVirtHandler & 3), ("\n"), 1);
4155	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,("pCur=%p %RGp-%RGp\n", pCur, pCur->Core.Key, pCur->Core.KeyLast));
4156	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4157	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4158	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4159	" pCur=%p %RGp-%RGp\n",
4160	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4161	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4162	AssertReleaseMsg( !pArgs->pPrevPhys2Virt
4163	\|\| (pArgs->fLeftToRight ? pArgs->pPrevPhys2Virt->Core.KeyLast < pCur->Core.Key : pArgs->pPrevPhys2Virt->Core.KeyLast > pCur->Core.Key),
4164	("pPrevPhys2Virt=%p %RGp-%RGp\n"
4165	" pCur=%p %RGp-%RGp\n",
4166	pArgs->pPrevPhys2Virt, pArgs->pPrevPhys2Virt->Core.Key, pArgs->pPrevPhys2Virt->Core.KeyLast,
4167	pCur, pCur->Core.Key, pCur->Core.KeyLast));
4168	AssertReleaseMsg((pCur->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD),
4169	("pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4170	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4171	if (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)
4172	{
4173	PPGMPHYS2VIRTHANDLER pCur2 = pCur;
4174	for (;;)
4175	{
4176	pCur2 = (PPGMPHYS2VIRTHANDLER)((intptr_t)pCur + (pCur->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK));
4177	AssertReleaseMsg(pCur2 != pCur,
4178	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4179	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias));
4180	AssertReleaseMsg((pCur2->offNextAlias & (PGMPHYS2VIRTHANDLER_IN_TREE \| PGMPHYS2VIRTHANDLER_IS_HEAD)) == PGMPHYS2VIRTHANDLER_IN_TREE,
4181	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4182	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4183	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4184	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4185	AssertReleaseMsg((pCur2->Core.Key ^ pCur->Core.Key) < PAGE_SIZE,
4186	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4187	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4188	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4189	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4190	AssertReleaseMsg((pCur2->Core.KeyLast ^ pCur->Core.KeyLast) < PAGE_SIZE,
4191	(" pCur=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n"
4192	"pCur2=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n",
4193	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->offVirtHandler, pCur->offNextAlias,
4194	pCur2, pCur2->Core.Key, pCur2->Core.KeyLast, pCur2->offVirtHandler, pCur2->offNextAlias));
4195	if (!(pCur2->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK))
4196	break;
4197	}
4198	}
4199
4200	pArgs->pPrevPhys2Virt = pCur;
4201	return 0;
4202	}
4203
4204	#endif /* VBOX_WITH_RAW_MODE */
4205
4206	/**
4207	* Perform an integrity check on the PGM component.
4208	*
4209	* @returns VINF_SUCCESS if everything is fine.
4210	* @returns VBox error status after asserting on integrity breach.
4211	* @param pVM The cross context VM structure.
4212	*/
4213	VMMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
4214	{
4215	AssertReleaseReturn(pVM->pgm.s.offVM, VERR_INTERNAL_ERROR);
4216
4217	/*
4218	* Check the trees.
4219	*/
4220	int cErrors = 0;
4221	const PGMCHECKINTARGS LeftToRight = { true, NULL, NULL, NULL, pVM };
4222	const PGMCHECKINTARGS RightToLeft = { false, NULL, NULL, NULL, pVM };
4223	PGMCHECKINTARGS Args = LeftToRight;
4224	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4225	Args = RightToLeft;
4226	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
4227	#ifdef VBOX_WITH_RAW_MODE
4228	Args = LeftToRight;
4229	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4230	Args = RightToLeft;
4231	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->VirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4232	Args = LeftToRight;
4233	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, true, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4234	Args = RightToLeft;
4235	cErrors += RTAvlroGCPtrDoWithAll( &pVM->pgm.s.pTreesR3->HyperVirtHandlers, false, pgmR3CheckIntegrityVirtHandlerNode, &Args);
4236	Args = LeftToRight;
4237	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, true, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4238	Args = RightToLeft;
4239	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysToVirtHandlers, false, pgmR3CheckIntegrityPhysToVirtHandlerNode, &Args);
4240	#endif /* VBOX_WITH_RAW_MODE */
4241
4242	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
4243	}
4244

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGM.cpp@ 69674

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