PGM.cpp@ 92392

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1	/* $Id: PGM.cpp 92385 2021-11-11 23:54:29Z vboxsync $ */
2	/** @file
3	* PGM - Page Manager and Monitor. (Mixing stuff here, not good?)
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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 (obsolete)
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 or RTR0MemObjAllocPhys allocate
254	* memory object and the tracking 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_Changes Changes
586	*
587	* Breakdown of the changes involved?
588	*/
589
590
591	/*********************************************************************************************************************************
592	* Header Files *
593	*********************************************************************************************************************************/
594	#define LOG_GROUP LOG_GROUP_PGM
595	#define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
596	#include <VBox/vmm/dbgf.h>
597	#include <VBox/vmm/pgm.h>
598	#include <VBox/vmm/cpum.h>
599	#include <VBox/vmm/iom.h>
600	#include <VBox/sup.h>
601	#include <VBox/vmm/mm.h>
602	#include <VBox/vmm/em.h>
603	#include <VBox/vmm/stam.h>
604	#include <VBox/vmm/selm.h>
605	#include <VBox/vmm/ssm.h>
606	#include <VBox/vmm/hm.h>
607	#include "PGMInternal.h"
608	#include <VBox/vmm/vm.h>
609	#include <VBox/vmm/uvm.h>
610	#include "PGMInline.h"
611
612	#include <VBox/dbg.h>
613	#include <VBox/param.h>
614	#include <VBox/err.h>
615
616	#include <iprt/asm.h>
617	#include <iprt/asm-amd64-x86.h>
618	#include <iprt/assert.h>
619	#include <iprt/env.h>
620	#include <iprt/mem.h>
621	#include <iprt/file.h>
622	#include <iprt/string.h>
623	#include <iprt/thread.h>
624	#ifdef RT_OS_LINUX
625	# include <iprt/linux/sysfs.h>
626	#endif
627
628
629	/*********************************************************************************************************************************
630	* Structures and Typedefs *
631	*********************************************************************************************************************************/
632	/**
633	* Argument package for pgmR3RElocatePhysHnadler, pgmR3RelocateVirtHandler and
634	* pgmR3RelocateHyperVirtHandler.
635	*/
636	typedef struct PGMRELOCHANDLERARGS
637	{
638	RTGCINTPTR offDelta;
639	PVM pVM;
640	} PGMRELOCHANDLERARGS;
641	/** Pointer to a page access handlere relocation argument package. */
642	typedef PGMRELOCHANDLERARGS const *PCPGMRELOCHANDLERARGS;
643
644
645	/*********************************************************************************************************************************
646	* Internal Functions *
647	*********************************************************************************************************************************/
648	static int pgmR3InitPaging(PVM pVM);
649	static int pgmR3InitStats(PVM pVM);
650	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
651	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
652	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
653	#ifdef VBOX_STRICT
654	static FNVMATSTATE pgmR3ResetNoMorePhysWritesFlag;
655	#endif
656
657	#ifdef VBOX_WITH_DEBUGGER
658	static FNDBGCCMD pgmR3CmdError;
659	static FNDBGCCMD pgmR3CmdSync;
660	static FNDBGCCMD pgmR3CmdSyncAlways;
661	# ifdef VBOX_STRICT
662	static FNDBGCCMD pgmR3CmdAssertCR3;
663	# endif
664	static FNDBGCCMD pgmR3CmdPhysToFile;
665	#endif
666
667
668	/*********************************************************************************************************************************
669	* Global Variables *
670	*********************************************************************************************************************************/
671	#ifdef VBOX_WITH_DEBUGGER
672	/** Argument descriptors for '.pgmerror' and '.pgmerroroff'. */
673	static const DBGCVARDESC g_aPgmErrorArgs[] =
674	{
675	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
676	{ 0, 1, DBGCVAR_CAT_STRING, 0, "where", "Error injection location." },
677	};
678
679	static const DBGCVARDESC g_aPgmPhysToFileArgs[] =
680	{
681	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
682	{ 1, 1, DBGCVAR_CAT_STRING, 0, "file", "The file name." },
683	{ 0, 1, DBGCVAR_CAT_STRING, 0, "nozero", "If present, zero pages are skipped." },
684	};
685
686	# ifdef DEBUG_sandervl
687	static const DBGCVARDESC g_aPgmCountPhysWritesArgs[] =
688	{
689	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
690	{ 1, 1, DBGCVAR_CAT_STRING, 0, "enabled", "on/off." },
691	{ 1, 1, DBGCVAR_CAT_NUMBER_NO_RANGE, 0, "interval", "Interval in ms." },
692	};
693	# endif
694
695	/** Command descriptors. */
696	static const DBGCCMD g_aCmds[] =
697	{
698	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
699	{ "pgmsync", 0, 0, NULL, 0, 0, pgmR3CmdSync, "", "Sync the CR3 page." },
700	{ "pgmerror", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Enables inject runtime of errors into parts of PGM." },
701	{ "pgmerroroff", 0, 1, &g_aPgmErrorArgs[0], 1, 0, pgmR3CmdError, "", "Disables inject runtime errors into parts of PGM." },
702	# ifdef VBOX_STRICT
703	{ "pgmassertcr3", 0, 0, NULL, 0, 0, pgmR3CmdAssertCR3, "", "Check the shadow CR3 mapping." },
704	# ifdef VBOX_WITH_PAGE_SHARING
705	{ "pgmcheckduppages", 0, 0, NULL, 0, 0, pgmR3CmdCheckDuplicatePages, "", "Check for duplicate pages in all running VMs." },
706	{ "pgmsharedmodules", 0, 0, NULL, 0, 0, pgmR3CmdShowSharedModules, "", "Print shared modules info." },
707	# endif
708	# endif
709	{ "pgmsyncalways", 0, 0, NULL, 0, 0, pgmR3CmdSyncAlways, "", "Toggle permanent CR3 syncing." },
710	{ "pgmphystofile", 1, 2, &g_aPgmPhysToFileArgs[0], 2, 0, pgmR3CmdPhysToFile, "", "Save the physical memory to file." },
711	};
712	#endif
713
714
715	#ifdef VBOX_WITH_PGM_NEM_MODE
716	/**
717	* Interface that NEM uses to switch PGM into simplified memory managment mode.
718	*
719	* This call occurs before PGMR3Init.
720	*
721	* @param pVM The cross context VM structure.
722	*/
723	VMMR3_INT_DECL(void) PGMR3EnableNemMode(PVM pVM)
724	{
725	AssertFatal(!PDMCritSectIsInitialized(&pVM->pgm.s.CritSectX));
726	pVM->pgm.s.fNemMode = true;
727	}
728	#endif
729
730
731	/**
732	* Initiates the paging of VM.
733	*
734	* @returns VBox status code.
735	* @param pVM The cross context VM structure.
736	*/
737	VMMR3DECL(int) PGMR3Init(PVM pVM)
738	{
739	LogFlow(("PGMR3Init:\n"));
740	PCFGMNODE pCfgPGM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/PGM");
741	int rc;
742
743	/*
744	* Assert alignment and sizes.
745	*/
746	AssertCompile(sizeof(pVM->pgm.s) <= sizeof(pVM->pgm.padding));
747	AssertCompile(sizeof(pVM->apCpusR3[0]->pgm.s) <= sizeof(pVM->apCpusR3[0]->pgm.padding));
748	AssertCompileMemberAlignment(PGM, CritSectX, sizeof(uintptr_t));
749
750	/*
751	* Init the structure.
752	*/
753	/pVM->pgm.s.fRestoreRomPagesAtReset = false;/
754
755	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aHandyPages); i++)
756	{
757	pVM->pgm.s.aHandyPages[i].HCPhysGCPhys = NIL_GMMPAGEDESC_PHYS;
758	pVM->pgm.s.aHandyPages[i].fZeroed = false;
759	pVM->pgm.s.aHandyPages[i].idPage = NIL_GMM_PAGEID;
760	pVM->pgm.s.aHandyPages[i].idSharedPage = NIL_GMM_PAGEID;
761	}
762
763	for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.aLargeHandyPage); i++)
764	{
765	pVM->pgm.s.aLargeHandyPage[i].HCPhysGCPhys = NIL_GMMPAGEDESC_PHYS;
766	pVM->pgm.s.aLargeHandyPage[i].fZeroed = false;
767	pVM->pgm.s.aLargeHandyPage[i].idPage = NIL_GMM_PAGEID;
768	pVM->pgm.s.aLargeHandyPage[i].idSharedPage = NIL_GMM_PAGEID;
769	}
770
771	/* Init the per-CPU part. */
772	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
773	{
774	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
775	PPGMCPU pPGM = &pVCpu->pgm.s;
776
777	pPGM->enmShadowMode = PGMMODE_INVALID;
778	pPGM->enmGuestMode = PGMMODE_INVALID;
779	pPGM->enmGuestSlatMode = PGMSLAT_INVALID;
780	pPGM->idxGuestModeData = UINT8_MAX;
781	pPGM->idxShadowModeData = UINT8_MAX;
782	pPGM->idxBothModeData = UINT8_MAX;
783
784	pPGM->GCPhysCR3 = NIL_RTGCPHYS;
785
786	pPGM->pGst32BitPdR3 = NULL;
787	pPGM->pGstPaePdptR3 = NULL;
788	pPGM->pGstAmd64Pml4R3 = NULL;
789	pPGM->pGst32BitPdR0 = NIL_RTR0PTR;
790	pPGM->pGstPaePdptR0 = NIL_RTR0PTR;
791	pPGM->pGstAmd64Pml4R0 = NIL_RTR0PTR;
792	for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsR3); i++)
793	{
794	pPGM->apGstPaePDsR3[i] = NULL;
795	pPGM->apGstPaePDsR0[i] = NIL_RTR0PTR;
796	pPGM->aGCPhysGstPaePDs[i] = NIL_RTGCPHYS;
797	pPGM->aGCPhysGstPaePDsMonitored[i] = NIL_RTGCPHYS;
798	}
799
800	pPGM->fA20Enabled = true;
801	pPGM->GCPhysA20Mask = ~((RTGCPHYS)!pPGM->fA20Enabled << 20);
802	}
803
804	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
805	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1; /* default; checked later */
806
807	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "RamPreAlloc", &pVM->pgm.s.fRamPreAlloc,
808	#ifdef VBOX_WITH_PREALLOC_RAM_BY_DEFAULT
809	true
810	#else
811	false
812	#endif
813	);
814	AssertLogRelRCReturn(rc, rc);
815
816	#if HC_ARCH_BITS == 32
817	# ifdef RT_OS_DARWIN
818	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE * 3);
819	# else
820	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, _1G / GMM_CHUNK_SIZE);
821	# endif
822	#else
823	rc = CFGMR3QueryU32Def(pCfgPGM, "MaxRing3Chunks", &pVM->pgm.s.ChunkR3Map.cMax, UINT32_MAX);
824	#endif
825	AssertLogRelRCReturn(rc, rc);
826	for (uint32_t i = 0; i < RT_ELEMENTS(pVM->pgm.s.ChunkR3Map.Tlb.aEntries); i++)
827	pVM->pgm.s.ChunkR3Map.Tlb.aEntries[i].idChunk = NIL_GMM_CHUNKID;
828
829	/*
830	* Get the configured RAM size - to estimate saved state size.
831	*/
832	uint64_t cbRam;
833	rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
834	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
835	cbRam = 0;
836	else if (RT_SUCCESS(rc))
837	{
838	if (cbRam < PAGE_SIZE)
839	cbRam = 0;
840	cbRam = RT_ALIGN_64(cbRam, PAGE_SIZE);
841	}
842	else
843	{
844	AssertMsgFailed(("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc));
845	return rc;
846	}
847
848	/*
849	* Check for PCI pass-through and other configurables.
850	*/
851	rc = CFGMR3QueryBoolDef(pCfgPGM, "PciPassThrough", &pVM->pgm.s.fPciPassthrough, false);
852	AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"PciPassThrough\", rc=%Rrc.\n", rc), rc);
853	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough \|\| pVM->pgm.s.fRamPreAlloc, VERR_INVALID_PARAMETER);
854
855	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "PageFusionAllowed", &pVM->pgm.s.fPageFusionAllowed, false);
856	AssertLogRelRCReturn(rc, rc);
857
858	/** @cfgm{/PGM/ZeroRamPagesOnReset, boolean, true}
859	* Whether to clear RAM pages on (hard) reset. */
860	rc = CFGMR3QueryBoolDef(pCfgPGM, "ZeroRamPagesOnReset", &pVM->pgm.s.fZeroRamPagesOnReset, true);
861	AssertLogRelRCReturn(rc, rc);
862
863	/*
864	* Register callbacks, string formatters and the saved state data unit.
865	*/
866	#ifdef VBOX_STRICT
867	VMR3AtStateRegister(pVM->pUVM, pgmR3ResetNoMorePhysWritesFlag, NULL);
868	#endif
869	PGMRegisterStringFormatTypes();
870
871	rc = pgmR3InitSavedState(pVM, cbRam);
872	if (RT_FAILURE(rc))
873	return rc;
874
875	/*
876	* Initialize the PGM critical section and flush the phys TLBs
877	*/
878	rc = PDMR3CritSectInit(pVM, &pVM->pgm.s.CritSectX, RT_SRC_POS, "PGM");
879	AssertRCReturn(rc, rc);
880
881	PGMR3PhysChunkInvalidateTLB(pVM);
882	pgmPhysInvalidatePageMapTLB(pVM);
883
884	/*
885	* For the time being we sport a full set of handy pages in addition to the base
886	* memory to simplify things.
887	*/
888	rc = MMR3ReserveHandyPages(pVM, RT_ELEMENTS(pVM->pgm.s.aHandyPages)); /** @todo this should be changed to PGM_HANDY_PAGES_MIN but this needs proper testing... */
889	AssertRCReturn(rc, rc);
890
891	/*
892	* Trees
893	*/
894	rc = MMHyperAlloc(pVM, sizeof(PGMTREES), 0, MM_TAG_PGM, (void **)&pVM->pgm.s.pTreesR3);
895	if (RT_SUCCESS(rc))
896	pVM->pgm.s.pTreesR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pTreesR3);
897
898	/*
899	* Allocate the zero page.
900	*/
901	if (RT_SUCCESS(rc))
902	{
903	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvZeroPgR3);
904	if (RT_SUCCESS(rc))
905	{
906	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
907	pVM->pgm.s.HCPhysZeroPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvZeroPgR3);
908	AssertRelease(pVM->pgm.s.HCPhysZeroPg != NIL_RTHCPHYS);
909	}
910	}
911
912	/*
913	* Allocate the invalid MMIO page.
914	* (The invalid bits in HCPhysInvMmioPg are set later on init complete.)
915	*/
916	if (RT_SUCCESS(rc))
917	{
918	rc = MMHyperAlloc(pVM, PAGE_SIZE, PAGE_SIZE, MM_TAG_PGM, &pVM->pgm.s.pvMmioPgR3);
919	if (RT_SUCCESS(rc))
920	{
921	ASMMemFill32(pVM->pgm.s.pvMmioPgR3, PAGE_SIZE, 0xfeedface);
922	pVM->pgm.s.HCPhysMmioPg = MMR3HyperHCVirt2HCPhys(pVM, pVM->pgm.s.pvMmioPgR3);
923	AssertRelease(pVM->pgm.s.HCPhysMmioPg != NIL_RTHCPHYS);
924	pVM->pgm.s.HCPhysInvMmioPg = pVM->pgm.s.HCPhysMmioPg;
925	}
926	}
927
928	/*
929	* Register the physical access handler protecting ROMs.
930	*/
931	if (RT_SUCCESS(rc))
932	/** @todo why isn't pgmPhysRomWriteHandler registered for ring-0? */
933	rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_WRITE, false /fKeepPgmLock/,
934	pgmPhysRomWriteHandler,
935	NULL, NULL, "pgmPhysRomWritePfHandler",
936	NULL, NULL, "pgmPhysRomWritePfHandler",
937	"ROM write protection",
938	&pVM->pgm.s.hRomPhysHandlerType);
939
940	/*
941	* Register the physical access handler doing dirty MMIO2 tracing.
942	*/
943	if (RT_SUCCESS(rc))
944	rc = PGMR3HandlerPhysicalTypeRegister(pVM, PGMPHYSHANDLERKIND_WRITE, true /fKeepPgmLock/,
945	pgmPhysMmio2WriteHandler,
946	NULL, "pgmPhysMmio2WriteHandler", "pgmPhysMmio2WritePfHandler",
947	NULL, "pgmPhysMmio2WriteHandler", "pgmPhysMmio2WritePfHandler",
948	"MMIO2 dirty page tracing",
949	&pVM->pgm.s.hMmio2DirtyPhysHandlerType);
950
951	/*
952	* Init the paging.
953	*/
954	if (RT_SUCCESS(rc))
955	rc = pgmR3InitPaging(pVM);
956
957	/*
958	* Init the page pool.
959	*/
960	if (RT_SUCCESS(rc))
961	rc = pgmR3PoolInit(pVM);
962
963	if (RT_SUCCESS(rc))
964	{
965	for (VMCPUID i = 0; i < pVM->cCpus; i++)
966	{
967	PVMCPU pVCpu = pVM->apCpusR3[i];
968	rc = PGMHCChangeMode(pVM, pVCpu, PGMMODE_REAL);
969	if (RT_FAILURE(rc))
970	break;
971	}
972	}
973
974	if (RT_SUCCESS(rc))
975	{
976	/*
977	* Info & statistics
978	*/
979	DBGFR3InfoRegisterInternalEx(pVM, "mode",
980	"Shows the current paging mode. "
981	"Recognizes 'all', 'guest', 'shadow' and 'host' as arguments, defaulting to 'all' if nothing is given.",
982	pgmR3InfoMode,
983	DBGFINFO_FLAGS_ALL_EMTS);
984	DBGFR3InfoRegisterInternal(pVM, "pgmcr3",
985	"Dumps all the entries in the top level paging table. No arguments.",
986	pgmR3InfoCr3);
987	DBGFR3InfoRegisterInternal(pVM, "phys",
988	"Dumps all the physical address ranges. Pass 'verbose' to get more details.",
989	pgmR3PhysInfo);
990	DBGFR3InfoRegisterInternal(pVM, "handlers",
991	"Dumps physical, virtual and hyper virtual handlers. "
992	"Pass 'phys', 'virt', 'hyper' as argument if only one kind is wanted."
993	"Add 'nost' if the statistics are unwanted, use together with 'all' or explicit selection.",
994	pgmR3InfoHandlers);
995
996	pgmR3InitStats(pVM);
997
998	#ifdef VBOX_WITH_DEBUGGER
999	/*
1000	* Debugger commands.
1001	*/
1002	static bool s_fRegisteredCmds = false;
1003	if (!s_fRegisteredCmds)
1004	{
1005	int rc2 = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
1006	if (RT_SUCCESS(rc2))
1007	s_fRegisteredCmds = true;
1008	}
1009	#endif
1010
1011	#ifdef RT_OS_LINUX
1012	/*
1013	* Log the /proc/sys/vm/max_map_count value on linux as that is
1014	* frequently giving us grief when too low.
1015	*/
1016	int64_t const cGuessNeeded = MMR3PhysGetRamSize(pVM) / _2M + 16384 /guesstimate/;
1017	int64_t cMaxMapCount = 0;
1018	int rc2 = RTLinuxSysFsReadIntFile(10, &cMaxMapCount, "/proc/sys/vm/max_map_count");
1019	LogRel(("PGM: /proc/sys/vm/max_map_count = %RI64 (rc2=%Rrc); cGuessNeeded=%RI64\n", cMaxMapCount, rc2, cGuessNeeded));
1020	if (RT_SUCCESS(rc2) && cMaxMapCount < cGuessNeeded)
1021	LogRel(("PGM: WARNING!!\n"
1022	"PGM: WARNING!! Please increase /proc/sys/vm/max_map_count to at least %RI64 (or reduce the amount of RAM assigned to the VM)!\n"
1023	"PGM: WARNING!!\n", cMaxMapCount));
1024
1025	#endif
1026
1027	return VINF_SUCCESS;
1028	}
1029
1030	/* Almost no cleanup necessary, MM frees all memory. */
1031	PDMR3CritSectDelete(pVM, &pVM->pgm.s.CritSectX);
1032
1033	return rc;
1034	}
1035
1036
1037	/**
1038	* Init paging.
1039	*
1040	* Since we need to check what mode the host is operating in before we can choose
1041	* the right paging functions for the host we have to delay this until R0 has
1042	* been initialized.
1043	*
1044	* @returns VBox status code.
1045	* @param pVM The cross context VM structure.
1046	*/
1047	static int pgmR3InitPaging(PVM pVM)
1048	{
1049	/*
1050	* Force a recalculation of modes and switcher so everyone gets notified.
1051	*/
1052	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1053	{
1054	PVMCPU pVCpu = pVM->apCpusR3[i];
1055
1056	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
1057	pVCpu->pgm.s.enmGuestMode = PGMMODE_INVALID;
1058	pVCpu->pgm.s.enmGuestSlatMode = PGMSLAT_INVALID;
1059	pVCpu->pgm.s.idxGuestModeData = UINT8_MAX;
1060	pVCpu->pgm.s.idxShadowModeData = UINT8_MAX;
1061	pVCpu->pgm.s.idxBothModeData = UINT8_MAX;
1062	}
1063
1064	pVM->pgm.s.enmHostMode = SUPPAGINGMODE_INVALID;
1065
1066	/*
1067	* Initialize paging workers and mode from current host mode
1068	* and the guest running in real mode.
1069	*/
1070	pVM->pgm.s.enmHostMode = SUPR3GetPagingMode();
1071	switch (pVM->pgm.s.enmHostMode)
1072	{
1073	case SUPPAGINGMODE_32_BIT:
1074	case SUPPAGINGMODE_32_BIT_GLOBAL:
1075	case SUPPAGINGMODE_PAE:
1076	case SUPPAGINGMODE_PAE_GLOBAL:
1077	case SUPPAGINGMODE_PAE_NX:
1078	case SUPPAGINGMODE_PAE_GLOBAL_NX:
1079	break;
1080
1081	case SUPPAGINGMODE_AMD64:
1082	case SUPPAGINGMODE_AMD64_GLOBAL:
1083	case SUPPAGINGMODE_AMD64_NX:
1084	case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1085	if (ARCH_BITS != 64)
1086	{
1087	AssertMsgFailed(("Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1088	LogRel(("PGM: Host mode %d (64-bit) is not supported by non-64bit builds\n", pVM->pgm.s.enmHostMode));
1089	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1090	}
1091	break;
1092	default:
1093	AssertMsgFailed(("Host mode %d is not supported\n", pVM->pgm.s.enmHostMode));
1094	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
1095	}
1096
1097	LogFlow(("pgmR3InitPaging: returns successfully\n"));
1098	#if HC_ARCH_BITS == 64 && 0
1099	LogRel(("PGM: HCPhysInterPD=%RHp HCPhysInterPaePDPT=%RHp HCPhysInterPaePML4=%RHp\n",
1100	pVM->pgm.s.HCPhysInterPD, pVM->pgm.s.HCPhysInterPaePDPT, pVM->pgm.s.HCPhysInterPaePML4));
1101	LogRel(("PGM: apInterPTs={%RHp,%RHp} apInterPaePTs={%RHp,%RHp} apInterPaePDs={%RHp,%RHp,%RHp,%RHp} pInterPaePDPT64=%RHp\n",
1102	MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPTs[1]),
1103	MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[0]), MMPage2Phys(pVM, pVM->pgm.s.apInterPaePTs[1]),
1104	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]),
1105	MMPage2Phys(pVM, pVM->pgm.s.pInterPaePDPT64)));
1106	#endif
1107
1108	/*
1109	* Log the host paging mode. It may come in handy.
1110	*/
1111	const char *pszHostMode;
1112	switch (pVM->pgm.s.enmHostMode)
1113	{
1114	case SUPPAGINGMODE_32_BIT: pszHostMode = "32-bit"; break;
1115	case SUPPAGINGMODE_32_BIT_GLOBAL: pszHostMode = "32-bit+PGE"; break;
1116	case SUPPAGINGMODE_PAE: pszHostMode = "PAE"; break;
1117	case SUPPAGINGMODE_PAE_GLOBAL: pszHostMode = "PAE+PGE"; break;
1118	case SUPPAGINGMODE_PAE_NX: pszHostMode = "PAE+NXE"; break;
1119	case SUPPAGINGMODE_PAE_GLOBAL_NX: pszHostMode = "PAE+PGE+NXE"; break;
1120	case SUPPAGINGMODE_AMD64: pszHostMode = "AMD64"; break;
1121	case SUPPAGINGMODE_AMD64_GLOBAL: pszHostMode = "AMD64+PGE"; break;
1122	case SUPPAGINGMODE_AMD64_NX: pszHostMode = "AMD64+NX"; break;
1123	case SUPPAGINGMODE_AMD64_GLOBAL_NX: pszHostMode = "AMD64+PGE+NX"; break;
1124	default: pszHostMode = "???"; break;
1125	}
1126	LogRel(("PGM: Host paging mode: %s\n", pszHostMode));
1127
1128	return VINF_SUCCESS;
1129	}
1130
1131
1132	/**
1133	* Init statistics
1134	* @returns VBox status code.
1135	*/
1136	static int pgmR3InitStats(PVM pVM)
1137	{
1138	PPGM pPGM = &pVM->pgm.s;
1139	int rc;
1140
1141	/*
1142	* Release statistics.
1143	*/
1144	/* Common - misc variables */
1145	STAM_REL_REG(pVM, &pPGM->cAllPages, STAMTYPE_U32, "/PGM/Page/cAllPages", STAMUNIT_COUNT, "The total number of pages.");
1146	STAM_REL_REG(pVM, &pPGM->cPrivatePages, STAMTYPE_U32, "/PGM/Page/cPrivatePages", STAMUNIT_COUNT, "The number of private pages.");
1147	STAM_REL_REG(pVM, &pPGM->cSharedPages, STAMTYPE_U32, "/PGM/Page/cSharedPages", STAMUNIT_COUNT, "The number of shared pages.");
1148	STAM_REL_REG(pVM, &pPGM->cReusedSharedPages, STAMTYPE_U32, "/PGM/Page/cReusedSharedPages", STAMUNIT_COUNT, "The number of reused shared pages.");
1149	STAM_REL_REG(pVM, &pPGM->cZeroPages, STAMTYPE_U32, "/PGM/Page/cZeroPages", STAMUNIT_COUNT, "The number of zero backed pages.");
1150	STAM_REL_REG(pVM, &pPGM->cPureMmioPages, STAMTYPE_U32, "/PGM/Page/cPureMmioPages", STAMUNIT_COUNT, "The number of pure MMIO pages.");
1151	STAM_REL_REG(pVM, &pPGM->cMonitoredPages, STAMTYPE_U32, "/PGM/Page/cMonitoredPages", STAMUNIT_COUNT, "The number of write monitored pages.");
1152	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.");
1153	STAM_REL_REG(pVM, &pPGM->cWriteLockedPages, STAMTYPE_U32, "/PGM/Page/cWriteLockedPages", STAMUNIT_COUNT, "The number of write(/read) locked pages.");
1154	STAM_REL_REG(pVM, &pPGM->cReadLockedPages, STAMTYPE_U32, "/PGM/Page/cReadLockedPages", STAMUNIT_COUNT, "The number of read (only) locked pages.");
1155	STAM_REL_REG(pVM, &pPGM->cBalloonedPages, STAMTYPE_U32, "/PGM/Page/cBalloonedPages", STAMUNIT_COUNT, "The number of ballooned pages.");
1156	STAM_REL_REG(pVM, &pPGM->cHandyPages, STAMTYPE_U32, "/PGM/Page/cHandyPages", STAMUNIT_COUNT, "The number of handy pages (not included in cAllPages).");
1157	STAM_REL_REG(pVM, &pPGM->cLargePages, STAMTYPE_U32, "/PGM/Page/cLargePages", STAMUNIT_COUNT, "The number of large pages allocated (includes disabled).");
1158	STAM_REL_REG(pVM, &pPGM->cLargePagesDisabled, STAMTYPE_U32, "/PGM/Page/cLargePagesDisabled", STAMUNIT_COUNT, "The number of disabled large pages.");
1159	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.c, STAMTYPE_U32, "/PGM/ChunkR3Map/c", STAMUNIT_COUNT, "Number of mapped chunks.");
1160	STAM_REL_REG(pVM, &pPGM->ChunkR3Map.cMax, STAMTYPE_U32, "/PGM/ChunkR3Map/cMax", STAMUNIT_COUNT, "Maximum number of mapped chunks.");
1161	STAM_REL_REG(pVM, &pPGM->cMappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Mapped", STAMUNIT_COUNT, "Number of times we mapped a chunk.");
1162	STAM_REL_REG(pVM, &pPGM->cUnmappedChunks, STAMTYPE_U32, "/PGM/ChunkR3Map/Unmapped", STAMUNIT_COUNT, "Number of times we unmapped a chunk.");
1163
1164	STAM_REL_REG(pVM, &pPGM->StatLargePageReused, STAMTYPE_COUNTER, "/PGM/LargePage/Reused", STAMUNIT_OCCURENCES, "The number of times we've reused a large page.");
1165	STAM_REL_REG(pVM, &pPGM->StatLargePageRefused, STAMTYPE_COUNTER, "/PGM/LargePage/Refused", STAMUNIT_OCCURENCES, "The number of times we couldn't use a large page.");
1166	STAM_REL_REG(pVM, &pPGM->StatLargePageRecheck, STAMTYPE_COUNTER, "/PGM/LargePage/Recheck", STAMUNIT_OCCURENCES, "The number of times we've rechecked a disabled large page.");
1167
1168	STAM_REL_REG(pVM, &pPGM->StatShModCheck, STAMTYPE_PROFILE, "/PGM/ShMod/Check", STAMUNIT_TICKS_PER_CALL, "Profiles the shared module checking.");
1169	STAM_REL_REG(pVM, &pPGM->StatMmio2QueryAndResetDirtyBitmap, STAMTYPE_PROFILE, "/PGM/Mmio2QueryAndResetDirtyBitmap", STAMUNIT_TICKS_PER_CALL, "Profiles calls to PGMR3PhysMmio2QueryAndResetDirtyBitmap (sans locking).");
1170
1171	/* Live save */
1172	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.fActive, STAMTYPE_U8, "/PGM/LiveSave/fActive", STAMUNIT_COUNT, "Active or not.");
1173	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).");
1174	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesLong, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesLong", STAMUNIT_COUNT, "Longer term dirty page average.");
1175	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cDirtyPagesShort, STAMTYPE_U32, "/PGM/LiveSave/cDirtyPagesShort", STAMUNIT_COUNT, "Short term dirty page average.");
1176	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cPagesPerSecond, STAMTYPE_U32, "/PGM/LiveSave/cPagesPerSecond", STAMUNIT_COUNT, "Pages per second.");
1177	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.cSavedPages, STAMTYPE_U64, "/PGM/LiveSave/cSavedPages", STAMUNIT_COUNT, "The total number of saved pages.");
1178	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cReadPages", STAMUNIT_COUNT, "RAM: Ready pages.");
1179	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cDirtyPages", STAMUNIT_COUNT, "RAM: Dirty pages.");
1180	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cZeroPages", STAMUNIT_COUNT, "RAM: Ready zero pages.");
1181	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Ram.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Ram/cMonitoredPages", STAMUNIT_COUNT, "RAM: Write monitored pages.");
1182	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cReadPages", STAMUNIT_COUNT, "ROM: Ready pages.");
1183	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cDirtyPages", STAMUNIT_COUNT, "ROM: Dirty pages.");
1184	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cZeroPages", STAMUNIT_COUNT, "ROM: Ready zero pages.");
1185	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Rom.cMonitoredPages, STAMTYPE_U32, "/PGM/LiveSave/Rom/cMonitoredPages", STAMUNIT_COUNT, "ROM: Write monitored pages.");
1186	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cReadyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cReadPages", STAMUNIT_COUNT, "MMIO2: Ready pages.");
1187	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cDirtyPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cDirtyPages", STAMUNIT_COUNT, "MMIO2: Dirty pages.");
1188	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cZeroPages, STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cZeroPages", STAMUNIT_COUNT, "MMIO2: Ready zero pages.");
1189	STAM_REL_REG_USED(pVM, &pPGM->LiveSave.Mmio2.cMonitoredPages,STAMTYPE_U32, "/PGM/LiveSave/Mmio2/cMonitoredPages",STAMUNIT_COUNT, "MMIO2: Write monitored pages.");
1190
1191	#define PGM_REG_COUNTER(a, b, c) \
1192	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b); \
1193	AssertRC(rc);
1194
1195	#define PGM_REG_COUNTER_BYTES(a, b, c) \
1196	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, c, b); \
1197	AssertRC(rc);
1198
1199	#define PGM_REG_PROFILE(a, b, c) \
1200	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b); \
1201	AssertRC(rc);
1202	#define PGM_REG_PROFILE_NS(a, b, c) \
1203	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, c, b); \
1204	AssertRC(rc);
1205
1206	#ifdef VBOX_WITH_STATISTICS
1207	PGMSTATS *pStats = &pPGM->Stats;
1208	#endif
1209
1210	PGM_REG_PROFILE_NS(&pPGM->StatLargePageAlloc, "/PGM/LargePage/Alloc", "Time spent by the host OS for large page allocation.");
1211	PGM_REG_COUNTER(&pPGM->StatLargePageOverflow, "/PGM/LargePage/Overflow", "The number of times allocating a large page took too long.");
1212	PGM_REG_COUNTER(&pPGM->StatLargePageTlbFlush, "/PGM/LargePage/TlbFlush", "The number of times a full VCPU TLB flush was required after a large allocation.");
1213	PGM_REG_COUNTER(&pPGM->StatLargePageZeroEvict, "/PGM/LargePage/ZeroEvict", "The number of zero page mappings we had to evict when allocating a large page.");
1214	#ifdef VBOX_WITH_STATISTICS
1215	PGM_REG_PROFILE(&pStats->StatLargePageAlloc2, "/PGM/LargePage/Alloc2", "Time spent allocating large pages.");
1216	PGM_REG_PROFILE(&pStats->StatLargePageSetup, "/PGM/LargePage/Setup", "Time spent setting up the newly allocated large pages.");
1217	PGM_REG_PROFILE(&pStats->StatR3IsValidLargePage, "/PGM/LargePage/IsValidR3", "pgmPhysIsValidLargePage profiling - R3.");
1218	PGM_REG_PROFILE(&pStats->StatRZIsValidLargePage, "/PGM/LargePage/IsValidRZ", "pgmPhysIsValidLargePage profiling - RZ.");
1219
1220	PGM_REG_COUNTER(&pStats->StatR3DetectedConflicts, "/PGM/R3/DetectedConflicts", "The number of times PGMR3CheckMappingConflicts() detected a conflict.");
1221	PGM_REG_PROFILE(&pStats->StatR3ResolveConflict, "/PGM/R3/ResolveConflict", "pgmR3SyncPTResolveConflict() profiling (includes the entire relocation).");
1222	PGM_REG_COUNTER(&pStats->StatR3PhysRead, "/PGM/R3/Phys/Read", "The number of times PGMPhysRead was called.");
1223	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysReadBytes, "/PGM/R3/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1224	PGM_REG_COUNTER(&pStats->StatR3PhysWrite, "/PGM/R3/Phys/Write", "The number of times PGMPhysWrite was called.");
1225	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysWriteBytes, "/PGM/R3/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1226	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleRead, "/PGM/R3/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1227	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleReadBytes, "/PGM/R3/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1228	PGM_REG_COUNTER(&pStats->StatR3PhysSimpleWrite, "/PGM/R3/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1229	PGM_REG_COUNTER_BYTES(&pStats->StatR3PhysSimpleWriteBytes, "/PGM/R3/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1230
1231	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsRZ", "TLB hits.");
1232	PGM_REG_COUNTER(&pStats->StatRZChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesRZ", "TLB misses.");
1233	PGM_REG_PROFILE(&pStats->StatChunkAging, "/PGM/ChunkR3Map/Map/Aging", "Chunk aging profiling.");
1234	PGM_REG_PROFILE(&pStats->StatChunkFindCandidate, "/PGM/ChunkR3Map/Map/Find", "Chunk unmap find profiling.");
1235	PGM_REG_PROFILE(&pStats->StatChunkUnmap, "/PGM/ChunkR3Map/Map/Unmap", "Chunk unmap of address space profiling.");
1236	PGM_REG_PROFILE(&pStats->StatChunkMap, "/PGM/ChunkR3Map/Map/Map", "Chunk map of address space profiling.");
1237
1238	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbHits, "/PGM/RZ/Page/MapTlbHits", "TLB hits.");
1239	PGM_REG_COUNTER(&pStats->StatRZPageMapTlbMisses, "/PGM/RZ/Page/MapTlbMisses", "TLB misses.");
1240	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbHits, "/PGM/ChunkR3Map/TlbHitsR3", "TLB hits.");
1241	PGM_REG_COUNTER(&pStats->StatR3ChunkR3MapTlbMisses, "/PGM/ChunkR3Map/TlbMissesR3", "TLB misses.");
1242	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbHits, "/PGM/R3/Page/MapTlbHits", "TLB hits.");
1243	PGM_REG_COUNTER(&pStats->StatR3PageMapTlbMisses, "/PGM/R3/Page/MapTlbMisses", "TLB misses.");
1244	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushes, "/PGM/R3/Page/MapTlbFlushes", "TLB flushes (all contexts).");
1245	PGM_REG_COUNTER(&pStats->StatPageMapTlbFlushEntry, "/PGM/R3/Page/MapTlbFlushEntry", "TLB entry flushes (all contexts).");
1246
1247	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbHits, "/PGM/RZ/RamRange/TlbHits", "TLB hits.");
1248	PGM_REG_COUNTER(&pStats->StatRZRamRangeTlbMisses, "/PGM/RZ/RamRange/TlbMisses", "TLB misses.");
1249	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbHits, "/PGM/R3/RamRange/TlbHits", "TLB hits.");
1250	PGM_REG_COUNTER(&pStats->StatR3RamRangeTlbMisses, "/PGM/R3/RamRange/TlbMisses", "TLB misses.");
1251
1252	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerReset, "/PGM/RZ/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1253	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerReset, "/PGM/R3/PhysHandlerReset", "The number of times PGMHandlerPhysicalReset is called.");
1254	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupHits, "/PGM/RZ/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1255	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupHits, "/PGM/R3/PhysHandlerLookupHits", "The number of cache hits when looking up physical handlers.");
1256	PGM_REG_COUNTER(&pStats->StatRZPhysHandlerLookupMisses, "/PGM/RZ/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1257	PGM_REG_COUNTER(&pStats->StatR3PhysHandlerLookupMisses, "/PGM/R3/PhysHandlerLookupMisses", "The number of cache misses when looking up physical handlers.");
1258
1259	PGM_REG_COUNTER(&pStats->StatRZPageReplaceShared, "/PGM/RZ/Page/ReplacedShared", "Times a shared page was replaced.");
1260	PGM_REG_COUNTER(&pStats->StatRZPageReplaceZero, "/PGM/RZ/Page/ReplacedZero", "Times the zero page was replaced.");
1261	/// @todo PGM_REG_COUNTER(&pStats->StatRZPageHandyAllocs, "/PGM/RZ/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1262	PGM_REG_COUNTER(&pStats->StatR3PageReplaceShared, "/PGM/R3/Page/ReplacedShared", "Times a shared page was replaced.");
1263	PGM_REG_COUNTER(&pStats->StatR3PageReplaceZero, "/PGM/R3/Page/ReplacedZero", "Times the zero page was replaced.");
1264	/// @todo PGM_REG_COUNTER(&pStats->StatR3PageHandyAllocs, "/PGM/R3/Page/HandyAllocs", "Number of times we've allocated more handy pages.");
1265
1266	PGM_REG_COUNTER(&pStats->StatRZPhysRead, "/PGM/RZ/Phys/Read", "The number of times PGMPhysRead was called.");
1267	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysReadBytes, "/PGM/RZ/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1268	PGM_REG_COUNTER(&pStats->StatRZPhysWrite, "/PGM/RZ/Phys/Write", "The number of times PGMPhysWrite was called.");
1269	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysWriteBytes, "/PGM/RZ/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1270	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleRead, "/PGM/RZ/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1271	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleReadBytes, "/PGM/RZ/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1272	PGM_REG_COUNTER(&pStats->StatRZPhysSimpleWrite, "/PGM/RZ/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1273	PGM_REG_COUNTER_BYTES(&pStats->StatRZPhysSimpleWriteBytes, "/PGM/RZ/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1274
1275	/* GC only: */
1276	PGM_REG_COUNTER(&pStats->StatRCInvlPgConflict, "/PGM/RC/InvlPgConflict", "Number of times PGMInvalidatePage() detected a mapping conflict.");
1277	PGM_REG_COUNTER(&pStats->StatRCInvlPgSyncMonCR3, "/PGM/RC/InvlPgSyncMonitorCR3", "Number of times PGMInvalidatePage() ran into PGM_SYNC_MONITOR_CR3.");
1278
1279	PGM_REG_COUNTER(&pStats->StatRCPhysRead, "/PGM/RC/Phys/Read", "The number of times PGMPhysRead was called.");
1280	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysReadBytes, "/PGM/RC/Phys/Read/Bytes", "The number of bytes read by PGMPhysRead.");
1281	PGM_REG_COUNTER(&pStats->StatRCPhysWrite, "/PGM/RC/Phys/Write", "The number of times PGMPhysWrite was called.");
1282	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysWriteBytes, "/PGM/RC/Phys/Write/Bytes", "The number of bytes written by PGMPhysWrite.");
1283	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleRead, "/PGM/RC/Phys/Simple/Read", "The number of times PGMPhysSimpleReadGCPtr was called.");
1284	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleReadBytes, "/PGM/RC/Phys/Simple/Read/Bytes", "The number of bytes read by PGMPhysSimpleReadGCPtr.");
1285	PGM_REG_COUNTER(&pStats->StatRCPhysSimpleWrite, "/PGM/RC/Phys/Simple/Write", "The number of times PGMPhysSimpleWriteGCPtr was called.");
1286	PGM_REG_COUNTER_BYTES(&pStats->StatRCPhysSimpleWriteBytes, "/PGM/RC/Phys/Simple/Write/Bytes", "The number of bytes written by PGMPhysSimpleWriteGCPtr.");
1287
1288	PGM_REG_COUNTER(&pStats->StatTrackVirgin, "/PGM/Track/Virgin", "The number of first time shadowings");
1289	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.");
1290	PGM_REG_COUNTER(&pStats->StatTrackAliasedMany, "/PGM/Track/AliasedMany", "The number of times we're tracking using cRef2.");
1291	PGM_REG_COUNTER(&pStats->StatTrackAliasedLots, "/PGM/Track/AliasedLots", "The number of times we're hitting pages which has overflowed cRef2");
1292	PGM_REG_COUNTER(&pStats->StatTrackOverflows, "/PGM/Track/Overflows", "The number of times the extent list grows too long.");
1293	PGM_REG_COUNTER(&pStats->StatTrackNoExtentsLeft, "/PGM/Track/NoExtentLeft", "The number of times the extent list was exhausted.");
1294	PGM_REG_PROFILE(&pStats->StatTrackDeref, "/PGM/Track/Deref", "Profiling of SyncPageWorkerTrackDeref (expensive).");
1295	#endif
1296
1297	#undef PGM_REG_COUNTER
1298	#undef PGM_REG_PROFILE
1299	#undef PGM_REG_PROFILE_NS
1300
1301	/*
1302	* Note! The layout below matches the member layout exactly!
1303	*/
1304
1305	/*
1306	* Common - stats
1307	*/
1308	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1309	{
1310	PPGMCPU pPgmCpu = &pVM->apCpusR3[idCpu]->pgm.s;
1311
1312	#define PGM_REG_COUNTER(a, b, c) \
1313	rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, c, b, idCpu); \
1314	AssertRC(rc);
1315	#define PGM_REG_PROFILE(a, b, c) \
1316	rc = STAMR3RegisterF(pVM, a, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, c, b, idCpu); \
1317	AssertRC(rc);
1318
1319	PGM_REG_COUNTER(&pPgmCpu->cGuestModeChanges, "/PGM/CPU%u/cGuestModeChanges", "Number of guest mode changes.");
1320	PGM_REG_COUNTER(&pPgmCpu->cA20Changes, "/PGM/CPU%u/cA20Changes", "Number of A20 gate changes.");
1321
1322	#ifdef VBOX_WITH_STATISTICS
1323	PGMCPUSTATS *pCpuStats = &pVM->apCpusR3[idCpu]->pgm.s.Stats;
1324
1325	# if 0 /* rarely useful; leave for debugging. */
1326	for (unsigned j = 0; j < RT_ELEMENTS(pPgmCpu->StatSyncPtPD); j++)
1327	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPtPD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1328	"The number of SyncPT per PD n.", "/PGM/CPU%u/PDSyncPT/%04X", i, j);
1329	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatSyncPagePD); j++)
1330	STAMR3RegisterF(pVM, &pCpuStats->StatSyncPagePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1331	"The number of SyncPage per PD n.", "/PGM/CPU%u/PDSyncPage/%04X", i, j);
1332	# endif
1333	/* R0 only: */
1334	PGM_REG_PROFILE(&pCpuStats->StatR0NpMiscfg, "/PGM/CPU%u/R0/NpMiscfg", "PGMR0Trap0eHandlerNPMisconfig() profiling.");
1335	PGM_REG_COUNTER(&pCpuStats->StatR0NpMiscfgSyncPage, "/PGM/CPU%u/R0/NpMiscfgSyncPage", "SyncPage calls from PGMR0Trap0eHandlerNPMisconfig().");
1336
1337	/* RZ only: */
1338	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0e, "/PGM/CPU%u/RZ/Trap0e", "Profiling of the PGMTrap0eHandler() body.");
1339	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.");
1340	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2CSAM, "/PGM/CPU%u/RZ/Trap0e/Time2/CSAM", "Profiling of the Trap0eHandler body when the cause is CSAM.");
1341	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.");
1342	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2GuestTrap, "/PGM/CPU%u/RZ/Trap0e/Time2/GuestTrap", "Profiling of the Trap0eHandler body when the cause is a guest trap.");
1343	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2HndPhys, "/PGM/CPU%u/RZ/Trap0e/Time2/HandlerPhysical", "Profiling of the Trap0eHandler body when the cause is a physical handler.");
1344	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.");
1345	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.");
1346	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.");
1347	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2Misc, "/PGM/CPU%u/RZ/Trap0e/Time2/Misc", "Profiling of the Trap0eHandler body when the cause is not known.");
1348	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.");
1349	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.");
1350	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.");
1351	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.");
1352	PGM_REG_PROFILE(&pCpuStats->StatRZTrap0eTime2WPEmulation, "/PGM/CPU%u/RZ/Trap0e/Time2/WPEmulation", "Profiling of the Trap0eHandler body when the cause is CR0.WP emulation.");
1353	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.");
1354	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.");
1355	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eConflicts, "/PGM/CPU%u/RZ/Trap0e/Conflicts", "The number of times #PF was caused by an undetected conflict.");
1356	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersOutOfSync, "/PGM/CPU%u/RZ/Trap0e/Handlers/OutOfSync", "Number of traps due to out-of-sync handled pages.");
1357	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAll, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAll", "Number of traps due to physical all-access handlers.");
1358	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysAllOpt, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysAllOpt", "Number of the physical all-access handler traps using the optimization.");
1359	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersPhysWrite, "/PGM/CPU%u/RZ/Trap0e/Handlers/PhysWrite", "Number of traps due to physical write-access handlers.");
1360	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersUnhandled, "/PGM/CPU%u/RZ/Trap0e/Handlers/Unhandled", "Number of traps due to access outside range of monitored page(s).");
1361	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eHandlersInvalid, "/PGM/CPU%u/RZ/Trap0e/Handlers/Invalid", "Number of traps due to access to invalid physical memory.");
1362	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPRead", "Number of user mode not present read page faults.");
1363	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/NPWrite", "Number of user mode not present write page faults.");
1364	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSWrite, "/PGM/CPU%u/RZ/Trap0e/Err/User/Write", "Number of user mode write page faults.");
1365	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSReserved, "/PGM/CPU%u/RZ/Trap0e/Err/User/Reserved", "Number of user mode reserved bit page faults.");
1366	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/User/NXE", "Number of user mode NXE page faults.");
1367	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eUSRead, "/PGM/CPU%u/RZ/Trap0e/Err/User/Read", "Number of user mode read page faults.");
1368	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentRead, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPRead", "Number of supervisor mode not present read page faults.");
1369	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVNotPresentWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NPWrite", "Number of supervisor mode not present write page faults.");
1370	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVWrite, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Write", "Number of supervisor mode write page faults.");
1371	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSVReserved, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/Reserved", "Number of supervisor mode reserved bit page faults.");
1372	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eSNXE, "/PGM/CPU%u/RZ/Trap0e/Err/Supervisor/NXE", "Number of supervisor mode NXE page faults.");
1373	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eGuestPF, "/PGM/CPU%u/RZ/Trap0e/GuestPF", "Number of real guest page faults.");
1374	PGM_REG_COUNTER(&pCpuStats->StatRZTrap0eWPEmulInRZ, "/PGM/CPU%u/RZ/Trap0e/WP/InRZ", "Number of guest page faults due to X86_CR0_WP emulation.");
1375	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).");
1376	#if 0 /* rarely useful; leave for debugging. */
1377	for (unsigned j = 0; j < RT_ELEMENTS(pCpuStats->StatRZTrap0ePD); j++)
1378	STAMR3RegisterF(pVM, &pCpuStats->StatRZTrap0ePD[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
1379	"The number of traps in page directory n.", "/PGM/CPU%u/RZ/Trap0e/PD/%04X", i, j);
1380	#endif
1381	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteHandled, "/PGM/CPU%u/RZ/CR3WriteHandled", "The number of times the Guest CR3 change was successfully handled.");
1382	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteUnhandled, "/PGM/CPU%u/RZ/CR3WriteUnhandled", "The number of times the Guest CR3 change was passed back to the recompiler.");
1383	PGM_REG_COUNTER(&pCpuStats->StatRZGuestCR3WriteConflict, "/PGM/CPU%u/RZ/CR3WriteConflict", "The number of times the Guest CR3 monitoring detected a conflict.");
1384	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteHandled, "/PGM/CPU%u/RZ/ROMWriteHandled", "The number of times the Guest ROM change was successfully handled.");
1385	PGM_REG_COUNTER(&pCpuStats->StatRZGuestROMWriteUnhandled, "/PGM/CPU%u/RZ/ROMWriteUnhandled", "The number of times the Guest ROM change was passed back to the recompiler.");
1386
1387	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapMigrateInvlPg, "/PGM/CPU%u/RZ/DynMap/MigrateInvlPg", "invlpg count in PGMR0DynMapMigrateAutoSet.");
1388	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapGCPageInl, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl", "Calls to pgmR0DynMapGCPageInlined.");
1389	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Hits", "Hash table lookup hits.");
1390	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/Misses", "Misses that falls back to the code common.");
1391	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamHits, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamHits", "1st ram range hits.");
1392	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapGCPageInlRamMisses, "/PGM/CPU%u/RZ/DynMap/PageGCPageInl/RamMisses", "1st ram range misses, takes slow path.");
1393	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPageInl, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl", "Calls to pgmRZDynMapHCPageInlined.");
1394	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlHits, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Hits", "Hash table lookup hits.");
1395	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapHCPageInlMisses, "/PGM/CPU%u/RZ/DynMap/PageHCPageInl/Misses", "Misses that falls back to the code common.");
1396	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPage, "/PGM/CPU%u/RZ/DynMap/Page", "Calls to pgmR0DynMapPage");
1397	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetOptimize, "/PGM/CPU%u/RZ/DynMap/Page/SetOptimize", "Calls to pgmRZDynMapOptimizeAutoSet.");
1398	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchFlushes, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchFlushes", "Set search restoring to subset flushes.");
1399	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchHits, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchHits", "Set search hits.");
1400	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSetSearchMisses, "/PGM/CPU%u/RZ/DynMap/Page/SetSearchMisses", "Set search misses.");
1401	PGM_REG_PROFILE(&pCpuStats->StatRZDynMapHCPage, "/PGM/CPU%u/RZ/DynMap/Page/HCPage", "Calls to pgmRZDynMapHCPageCommon (ring-0).");
1402	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits0, "/PGM/CPU%u/RZ/DynMap/Page/Hits0", "Hits at iPage+0");
1403	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits1, "/PGM/CPU%u/RZ/DynMap/Page/Hits1", "Hits at iPage+1");
1404	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageHits2, "/PGM/CPU%u/RZ/DynMap/Page/Hits2", "Hits at iPage+2");
1405	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageInvlPg, "/PGM/CPU%u/RZ/DynMap/Page/InvlPg", "invlpg count in pgmR0DynMapPageSlow.");
1406	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlow, "/PGM/CPU%u/RZ/DynMap/Page/Slow", "Calls to pgmR0DynMapPageSlow - subtract this from pgmR0DynMapPage to get 1st level hits.");
1407	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopHits, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopHits" , "Hits in the loop path.");
1408	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLoopMisses, "/PGM/CPU%u/RZ/DynMap/Page/SlowLoopMisses", "Misses in the loop path. NonLoopMisses = Slow - SlowLoopHit - SlowLoopMisses");
1409	//PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPageSlowLostHits, "/PGM/CPU%u/R0/DynMap/Page/SlowLostHits", "Lost hits.");
1410	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapSubsets, "/PGM/CPU%u/RZ/DynMap/Subsets", "Times PGMRZDynMapPushAutoSubset was called.");
1411	PGM_REG_COUNTER(&pCpuStats->StatRZDynMapPopFlushes, "/PGM/CPU%u/RZ/DynMap/SubsetPopFlushes", "Times PGMRZDynMapPopAutoSubset flushes the subset.");
1412	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[0], "/PGM/CPU%u/RZ/DynMap/SetFilledPct000..09", "00-09% filled (RC: min(set-size, dynmap-size))");
1413	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[1], "/PGM/CPU%u/RZ/DynMap/SetFilledPct010..19", "10-19% filled (RC: min(set-size, dynmap-size))");
1414	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[2], "/PGM/CPU%u/RZ/DynMap/SetFilledPct020..29", "20-29% filled (RC: min(set-size, dynmap-size))");
1415	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[3], "/PGM/CPU%u/RZ/DynMap/SetFilledPct030..39", "30-39% filled (RC: min(set-size, dynmap-size))");
1416	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[4], "/PGM/CPU%u/RZ/DynMap/SetFilledPct040..49", "40-49% filled (RC: min(set-size, dynmap-size))");
1417	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[5], "/PGM/CPU%u/RZ/DynMap/SetFilledPct050..59", "50-59% filled (RC: min(set-size, dynmap-size))");
1418	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[6], "/PGM/CPU%u/RZ/DynMap/SetFilledPct060..69", "60-69% filled (RC: min(set-size, dynmap-size))");
1419	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[7], "/PGM/CPU%u/RZ/DynMap/SetFilledPct070..79", "70-79% filled (RC: min(set-size, dynmap-size))");
1420	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[8], "/PGM/CPU%u/RZ/DynMap/SetFilledPct080..89", "80-89% filled (RC: min(set-size, dynmap-size))");
1421	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[9], "/PGM/CPU%u/RZ/DynMap/SetFilledPct090..99", "90-99% filled (RC: min(set-size, dynmap-size))");
1422	PGM_REG_COUNTER(&pCpuStats->aStatRZDynMapSetFilledPct[10], "/PGM/CPU%u/RZ/DynMap/SetFilledPct100", "100% filled (RC: min(set-size, dynmap-size))");
1423
1424	/* HC only: */
1425
1426	/* RZ & R3: */
1427	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3, "/PGM/CPU%u/RZ/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1428	PGM_REG_PROFILE(&pCpuStats->StatRZSyncCR3Handlers, "/PGM/CPU%u/RZ/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1429	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3Global, "/PGM/CPU%u/RZ/SyncCR3/Global", "The number of global CR3 syncs.");
1430	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3NotGlobal, "/PGM/CPU%u/RZ/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1431	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstCacheHit, "/PGM/CPU%u/RZ/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1432	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstFreed, "/PGM/CPU%u/RZ/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1433	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.");
1434	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.");
1435	PGM_REG_COUNTER(&pCpuStats->StatRZSyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/RZ/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1436	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.");
1437	PGM_REG_PROFILE(&pCpuStats->StatRZSyncPT, "/PGM/CPU%u/RZ/SyncPT", "Profiling of the pfnSyncPT() body.");
1438	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPTFailed, "/PGM/CPU%u/RZ/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1439	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4K, "/PGM/CPU%u/RZ/SyncPT/4K", "Nr of 4K PT syncs");
1440	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPT4M, "/PGM/CPU%u/RZ/SyncPT/4M", "Nr of 4M PT syncs");
1441	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.");
1442	PGM_REG_COUNTER(&pCpuStats->StatRZSyncPagePDOutOfSync, "/PGM/CPU%u/RZ/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1443	PGM_REG_COUNTER(&pCpuStats->StatRZAccessedPage, "/PGM/CPU%u/RZ/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1444	PGM_REG_PROFILE(&pCpuStats->StatRZDirtyBitTracking, "/PGM/CPU%u/RZ/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1445	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPage, "/PGM/CPU%u/RZ/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1446	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageBig, "/PGM/CPU%u/RZ/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1447	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageSkipped, "/PGM/CPU%u/RZ/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1448	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageTrap, "/PGM/CPU%u/RZ/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1449	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyPageStale, "/PGM/CPU%u/RZ/DirtyPage/Stale", "The number of traps generated for dirty bit tracking (stale tlb entries).");
1450	PGM_REG_COUNTER(&pCpuStats->StatRZDirtiedPage, "/PGM/CPU%u/RZ/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1451	PGM_REG_COUNTER(&pCpuStats->StatRZDirtyTrackRealPF, "/PGM/CPU%u/RZ/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1452	PGM_REG_COUNTER(&pCpuStats->StatRZPageAlreadyDirty, "/PGM/CPU%u/RZ/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1453	PGM_REG_PROFILE(&pCpuStats->StatRZInvalidatePage, "/PGM/CPU%u/RZ/InvalidatePage", "PGMInvalidatePage() profiling.");
1454	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4KBPages, "/PGM/CPU%u/RZ/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1455	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPages, "/PGM/CPU%u/RZ/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1456	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePage4MBPagesSkip, "/PGM/CPU%u/RZ/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1457	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNAs, "/PGM/CPU%u/RZ/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
1458	PGM_REG_COUNTER(&pCpuStats->StatRZInvalidatePagePDNPs, "/PGM/CPU%u/RZ/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
1459	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.");
1460	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).");
1461	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.");
1462	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.");
1463	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.");
1464	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.");
1465	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.");
1466	PGM_REG_COUNTER(&pCpuStats->StatRZPageOutOfSyncBallloon, "/PGM/CPU%u/RZ/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
1467	PGM_REG_PROFILE(&pCpuStats->StatRZPrefetch, "/PGM/CPU%u/RZ/Prefetch", "PGMPrefetchPage profiling.");
1468	PGM_REG_PROFILE(&pCpuStats->StatRZFlushTLB, "/PGM/CPU%u/RZ/FlushTLB", "Profiling of the PGMFlushTLB() body.");
1469	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)");
1470	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBNewCR3Global, "/PGM/CPU%u/RZ/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1471	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)");
1472	PGM_REG_COUNTER(&pCpuStats->StatRZFlushTLBSameCR3Global, "/PGM/CPU%u/RZ/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1473	PGM_REG_PROFILE(&pCpuStats->StatRZGstModifyPage, "/PGM/CPU%u/RZ/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
1474
1475	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3, "/PGM/CPU%u/R3/SyncCR3", "Profiling of the PGMSyncCR3() body.");
1476	PGM_REG_PROFILE(&pCpuStats->StatR3SyncCR3Handlers, "/PGM/CPU%u/R3/SyncCR3/Handlers", "Profiling of the PGMSyncCR3() update handler section.");
1477	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3Global, "/PGM/CPU%u/R3/SyncCR3/Global", "The number of global CR3 syncs.");
1478	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3NotGlobal, "/PGM/CPU%u/R3/SyncCR3/NotGlobal", "The number of non-global CR3 syncs.");
1479	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstCacheHit, "/PGM/CPU%u/R3/SyncCR3/DstChacheHit", "The number of times we got some kind of a cache hit.");
1480	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstFreed, "/PGM/CPU%u/R3/SyncCR3/DstFreed", "The number of times we've had to free a shadow entry.");
1481	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.");
1482	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.");
1483	PGM_REG_COUNTER(&pCpuStats->StatR3SyncCR3DstSkippedGlobalPD, "/PGM/CPU%u/R3/SyncCR3/DstSkippedGlobalPD", "The number of times a global page directory wasn't flushed.");
1484	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.");
1485	PGM_REG_PROFILE(&pCpuStats->StatR3SyncPT, "/PGM/CPU%u/R3/SyncPT", "Profiling of the pfnSyncPT() body.");
1486	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPTFailed, "/PGM/CPU%u/R3/SyncPT/Failed", "The number of times pfnSyncPT() failed.");
1487	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4K, "/PGM/CPU%u/R3/SyncPT/4K", "Nr of 4K PT syncs");
1488	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPT4M, "/PGM/CPU%u/R3/SyncPT/4M", "Nr of 4M PT syncs");
1489	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.");
1490	PGM_REG_COUNTER(&pCpuStats->StatR3SyncPagePDOutOfSync, "/PGM/CPU%u/R3/SyncPagePDOutOfSync", "The number of time we've encountered an out-of-sync PD in SyncPage.");
1491	PGM_REG_COUNTER(&pCpuStats->StatR3AccessedPage, "/PGM/CPU%u/R3/AccessedPage", "The number of pages marked not present for accessed bit emulation.");
1492	PGM_REG_PROFILE(&pCpuStats->StatR3DirtyBitTracking, "/PGM/CPU%u/R3/DirtyPage", "Profiling the dirty bit tracking in CheckPageFault().");
1493	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPage, "/PGM/CPU%u/R3/DirtyPage/Mark", "The number of pages marked read-only for dirty bit tracking.");
1494	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageBig, "/PGM/CPU%u/R3/DirtyPage/MarkBig", "The number of 4MB pages marked read-only for dirty bit tracking.");
1495	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageSkipped, "/PGM/CPU%u/R3/DirtyPage/Skipped", "The number of pages already dirty or readonly.");
1496	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyPageTrap, "/PGM/CPU%u/R3/DirtyPage/Trap", "The number of traps generated for dirty bit tracking.");
1497	PGM_REG_COUNTER(&pCpuStats->StatR3DirtiedPage, "/PGM/CPU%u/R3/DirtyPage/SetDirty", "The number of pages marked dirty because of write accesses.");
1498	PGM_REG_COUNTER(&pCpuStats->StatR3DirtyTrackRealPF, "/PGM/CPU%u/R3/DirtyPage/RealPF", "The number of real pages faults during dirty bit tracking.");
1499	PGM_REG_COUNTER(&pCpuStats->StatR3PageAlreadyDirty, "/PGM/CPU%u/R3/DirtyPage/AlreadySet", "The number of pages already marked dirty because of write accesses.");
1500	PGM_REG_PROFILE(&pCpuStats->StatR3InvalidatePage, "/PGM/CPU%u/R3/InvalidatePage", "PGMInvalidatePage() profiling.");
1501	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4KBPages, "/PGM/CPU%u/R3/InvalidatePage/4KBPages", "The number of times PGMInvalidatePage() was called for a 4KB page.");
1502	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPages, "/PGM/CPU%u/R3/InvalidatePage/4MBPages", "The number of times PGMInvalidatePage() was called for a 4MB page.");
1503	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePage4MBPagesSkip, "/PGM/CPU%u/R3/InvalidatePage/4MBPagesSkip","The number of times PGMInvalidatePage() skipped a 4MB page.");
1504	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNAs, "/PGM/CPU%u/R3/InvalidatePage/PDNAs", "The number of times PGMInvalidatePage() was called for a not accessed page directory.");
1505	PGM_REG_COUNTER(&pCpuStats->StatR3InvalidatePagePDNPs, "/PGM/CPU%u/R3/InvalidatePage/PDNPs", "The number of times PGMInvalidatePage() was called for a not present page directory.");
1506	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.");
1507	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).");
1508	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.");
1509	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.");
1510	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.");
1511	PGM_REG_COUNTER(&pCpuStats->StatR3PageOutOfSyncBallloon, "/PGM/CPU%u/R3/OutOfSync/Balloon", "The number of times a ballooned page was accessed (read).");
1512	PGM_REG_PROFILE(&pCpuStats->StatR3Prefetch, "/PGM/CPU%u/R3/Prefetch", "PGMPrefetchPage profiling.");
1513	PGM_REG_PROFILE(&pCpuStats->StatR3FlushTLB, "/PGM/CPU%u/R3/FlushTLB", "Profiling of the PGMFlushTLB() body.");
1514	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)");
1515	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBNewCR3Global, "/PGM/CPU%u/R3/FlushTLB/NewCR3Global", "The number of times PGMFlushTLB was called with a new CR3, global. (switch)");
1516	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)");
1517	PGM_REG_COUNTER(&pCpuStats->StatR3FlushTLBSameCR3Global, "/PGM/CPU%u/R3/FlushTLB/SameCR3Global", "The number of times PGMFlushTLB was called with the same CR3, global. (flush)");
1518	PGM_REG_PROFILE(&pCpuStats->StatR3GstModifyPage, "/PGM/CPU%u/R3/GstModifyPage", "Profiling of the PGMGstModifyPage() body.");
1519	#endif /* VBOX_WITH_STATISTICS */
1520
1521	#undef PGM_REG_PROFILE
1522	#undef PGM_REG_COUNTER
1523
1524	}
1525
1526	return VINF_SUCCESS;
1527	}
1528
1529
1530	/**
1531	* Ring-3 init finalizing.
1532	*
1533	* @returns VBox status code.
1534	* @param pVM The cross context VM structure.
1535	*/
1536	VMMR3DECL(int) PGMR3InitFinalize(PVM pVM)
1537	{
1538	/*
1539	* Determine the max physical address width (MAXPHYADDR) and apply it to
1540	* all the mask members and stuff.
1541	*/
1542	uint32_t cMaxPhysAddrWidth;
1543	uint32_t uMaxExtLeaf = ASMCpuId_EAX(0x80000000);
1544	if ( uMaxExtLeaf >= 0x80000008
1545	&& uMaxExtLeaf <= 0x80000fff)
1546	{
1547	cMaxPhysAddrWidth = ASMCpuId_EAX(0x80000008) & 0xff;
1548	LogRel(("PGM: The CPU physical address width is %u bits\n", cMaxPhysAddrWidth));
1549	cMaxPhysAddrWidth = RT_MIN(52, cMaxPhysAddrWidth);
1550	pVM->pgm.s.fLessThan52PhysicalAddressBits = cMaxPhysAddrWidth < 52;
1551	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 52; iBit++)
1552	pVM->pgm.s.HCPhysInvMmioPg \|= RT_BIT_64(iBit);
1553	}
1554	else
1555	{
1556	LogRel(("PGM: ASSUMING CPU physical address width of 48 bits (uMaxExtLeaf=%#x)\n", uMaxExtLeaf));
1557	cMaxPhysAddrWidth = 48;
1558	pVM->pgm.s.fLessThan52PhysicalAddressBits = true;
1559	pVM->pgm.s.HCPhysInvMmioPg \|= UINT64_C(0x000f0000000000);
1560	}
1561	Assert(pVM->cpum.ro.GuestFeatures.cMaxPhysAddrWidth == cMaxPhysAddrWidth);
1562
1563	/** @todo query from CPUM. */
1564	pVM->pgm.s.GCPhysInvAddrMask = 0;
1565	for (uint32_t iBit = cMaxPhysAddrWidth; iBit < 64; iBit++)
1566	pVM->pgm.s.GCPhysInvAddrMask \|= RT_BIT_64(iBit);
1567
1568	/*
1569	* Initialize the invalid paging entry masks, assuming NX is disabled.
1570	*/
1571	uint64_t fMbzPageFrameMask = pVM->pgm.s.GCPhysInvAddrMask & UINT64_C(0x000ffffffffff000);
1572	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
1573	uint64_t const fEptVpidCap = CPUMGetGuestIa32VmxEptVpidCap(pVM->apCpusR3[0]); /* should be identical for all VCPUs. */
1574	uint64_t const fGstEptMbzBigPdeMask = EPT_PDE2M_MBZ_MASK
1575	\| (RT_BF_GET(fEptVpidCap, VMX_BF_EPT_VPID_CAP_PDE_2M) ^ 1) << EPT_E_BIT_LEAF;
1576	uint64_t const fGstEptMbzBigPdpteMask = EPT_PDPTE1G_MBZ_MASK
1577	\| (RT_BF_GET(fEptVpidCap, VMX_BF_EPT_VPID_CAP_PDPTE_1G) ^ 1) << EPT_E_BIT_LEAF;
1578	#endif
1579	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
1580	{
1581	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
1582
1583	/** @todo The manuals are not entirely clear whether the physical
1584	* address width is relevant. See table 5-9 in the intel
1585	* manual vs the PDE4M descriptions. Write testcase (NP). */
1586	pVCpu->pgm.s.fGst32BitMbzBigPdeMask = ((uint32_t)(fMbzPageFrameMask >> (32 - 13)) & X86_PDE4M_PG_HIGH_MASK)
1587	\| X86_PDE4M_MBZ_MASK;
1588
1589	pVCpu->pgm.s.fGstPaeMbzPteMask = fMbzPageFrameMask \| X86_PTE_PAE_MBZ_MASK_NO_NX;
1590	pVCpu->pgm.s.fGstPaeMbzPdeMask = fMbzPageFrameMask \| X86_PDE_PAE_MBZ_MASK_NO_NX;
1591	pVCpu->pgm.s.fGstPaeMbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_PAE_MBZ_MASK_NO_NX;
1592	pVCpu->pgm.s.fGstPaeMbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_PAE_MBZ_MASK;
1593
1594	pVCpu->pgm.s.fGstAmd64MbzPteMask = fMbzPageFrameMask \| X86_PTE_LM_MBZ_MASK_NO_NX;
1595	pVCpu->pgm.s.fGstAmd64MbzPdeMask = fMbzPageFrameMask \| X86_PDE_LM_MBZ_MASK_NX;
1596	pVCpu->pgm.s.fGstAmd64MbzBigPdeMask = fMbzPageFrameMask \| X86_PDE2M_LM_MBZ_MASK_NX;
1597	pVCpu->pgm.s.fGstAmd64MbzPdpeMask = fMbzPageFrameMask \| X86_PDPE_LM_MBZ_MASK_NO_NX;
1598	pVCpu->pgm.s.fGstAmd64MbzBigPdpeMask = fMbzPageFrameMask \| X86_PDPE1G_LM_MBZ_MASK_NO_NX;
1599	pVCpu->pgm.s.fGstAmd64MbzPml4eMask = fMbzPageFrameMask \| X86_PML4E_MBZ_MASK_NO_NX;
1600
1601	pVCpu->pgm.s.fGst64ShadowedPteMask = X86_PTE_P \| X86_PTE_RW \| X86_PTE_US \| X86_PTE_G \| X86_PTE_A \| X86_PTE_D;
1602	pVCpu->pgm.s.fGst64ShadowedPdeMask = X86_PDE_P \| X86_PDE_RW \| X86_PDE_US \| X86_PDE_A;
1603	pVCpu->pgm.s.fGst64ShadowedBigPdeMask = X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_A;
1604	pVCpu->pgm.s.fGst64ShadowedBigPde4PteMask =
1605	X86_PDE4M_P \| X86_PDE4M_RW \| X86_PDE4M_US \| X86_PDE4M_G \| X86_PDE4M_A \| X86_PDE4M_D;
1606	pVCpu->pgm.s.fGstAmd64ShadowedPdpeMask = X86_PDPE_P \| X86_PDPE_RW \| X86_PDPE_US \| X86_PDPE_A;
1607	pVCpu->pgm.s.fGstAmd64ShadowedPml4eMask = X86_PML4E_P \| X86_PML4E_RW \| X86_PML4E_US \| X86_PML4E_A;
1608
1609	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
1610	pVCpu->pgm.s.fGstEptMbzPteMask = fMbzPageFrameMask \| EPT_PTE_MBZ_MASK;
1611	pVCpu->pgm.s.fGstEptMbzPdeMask = fMbzPageFrameMask \| EPT_PDE_MBZ_MASK;
1612	pVCpu->pgm.s.fGstEptMbzBigPdeMask = fMbzPageFrameMask \| fGstEptMbzBigPdeMask;
1613	pVCpu->pgm.s.fGstEptMbzPdpteMask = fMbzPageFrameMask \| EPT_PDPTE_MBZ_MASK;
1614	pVCpu->pgm.s.fGstEptMbzBigPdpteMask = fMbzPageFrameMask \| fGstEptMbzBigPdpteMask;
1615	pVCpu->pgm.s.fGstEptMbzPml4eMask = fMbzPageFrameMask \| EPT_PML4E_MBZ_MASK;
1616
1617	/* If any of the features (in the assert below) are enabled, we might have to shadow the relevant bits. */
1618	Assert( !pVM->cpum.ro.GuestFeatures.fVmxModeBasedExecuteEpt
1619	&& !pVM->cpum.ro.GuestFeatures.fVmxSppEpt
1620	&& !pVM->cpum.ro.GuestFeatures.fVmxEptXcptVe);
1621	pVCpu->pgm.s.fGstEptPresentMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE;
1622	pVCpu->pgm.s.fGstEptShadowedPml4eMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED;
1623	pVCpu->pgm.s.fGstEptShadowedPdpeMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED;
1624	pVCpu->pgm.s.fGstEptShadowedBigPdpeMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED \| EPT_E_DIRTY;
1625	pVCpu->pgm.s.fGstEptShadowedPdeMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED;
1626	pVCpu->pgm.s.fGstEptShadowedBigPdeMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED \| EPT_E_DIRTY;
1627	pVCpu->pgm.s.fGstEptShadowedPteMask = EPT_E_READ \| EPT_E_WRITE \| EPT_E_EXECUTE \| EPT_E_ACCESSED \| EPT_E_DIRTY;
1628	#endif
1629	}
1630
1631	/*
1632	* Note that AMD uses all the 8 reserved bits for the address (so 40 bits in total);
1633	* Intel only goes up to 36 bits, so we stick to 36 as well.
1634	* Update: More recent intel manuals specifies 40 bits just like AMD.
1635	*/
1636	uint32_t u32Dummy, u32Features;
1637	CPUMGetGuestCpuId(VMMGetCpu(pVM), 1, 0, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
1638	if (u32Features & X86_CPUID_FEATURE_EDX_PSE36)
1639	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(RT_MAX(36, cMaxPhysAddrWidth)) - 1;
1640	else
1641	pVM->pgm.s.GCPhys4MBPSEMask = RT_BIT_64(32) - 1;
1642
1643	/*
1644	* Allocate memory if we're supposed to do that.
1645	*/
1646	int rc = VINF_SUCCESS;
1647	if (pVM->pgm.s.fRamPreAlloc)
1648	rc = pgmR3PhysRamPreAllocate(pVM);
1649
1650	//pgmLogState(pVM);
1651	LogRel(("PGM: PGMR3InitFinalize: 4 MB PSE mask %RGp -> %Rrc\n", pVM->pgm.s.GCPhys4MBPSEMask, rc));
1652	return rc;
1653	}
1654
1655
1656	/**
1657	* Init phase completed callback.
1658	*
1659	* @returns VBox status code.
1660	* @param pVM The cross context VM structure.
1661	* @param enmWhat What has been completed.
1662	* @thread EMT(0)
1663	*/
1664	VMMR3_INT_DECL(int) PGMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1665	{
1666	switch (enmWhat)
1667	{
1668	case VMINITCOMPLETED_HM:
1669	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1670	if (pVM->pgm.s.fPciPassthrough)
1671	{
1672	AssertLogRelReturn(pVM->pgm.s.fRamPreAlloc, VERR_PCI_PASSTHROUGH_NO_RAM_PREALLOC);
1673	AssertLogRelReturn(HMIsEnabled(pVM), VERR_PCI_PASSTHROUGH_NO_HM);
1674	AssertLogRelReturn(HMIsNestedPagingActive(pVM), VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING);
1675
1676	/*
1677	* Report assignments to the IOMMU (hope that's good enough for now).
1678	*/
1679	if (pVM->pgm.s.fPciPassthrough)
1680	{
1681	int rc = VMMR3CallR0(pVM, VMMR0_DO_PGM_PHYS_SETUP_IOMMU, 0, NULL);
1682	AssertRCReturn(rc, rc);
1683	}
1684	}
1685	#else
1686	AssertLogRelReturn(!pVM->pgm.s.fPciPassthrough, VERR_PGM_PCI_PASSTHRU_MISCONFIG);
1687	#endif
1688	break;
1689
1690	default:
1691	/* shut up gcc */
1692	break;
1693	}
1694
1695	return VINF_SUCCESS;
1696	}
1697
1698
1699	/**
1700	* Applies relocations to data and code managed by this component.
1701	*
1702	* This function will be called at init and whenever the VMM need to relocate it
1703	* self inside the GC.
1704	*
1705	* @param pVM The cross context VM structure.
1706	* @param offDelta Relocation delta relative to old location.
1707	*/
1708	VMMR3DECL(void) PGMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1709	{
1710	LogFlow(("PGMR3Relocate: offDelta=%RGv\n", offDelta));
1711
1712	/*
1713	* Paging stuff.
1714	*/
1715
1716	/* Shadow, guest and both mode switch & relocation for each VCPU. */
1717	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1718	{
1719	PVMCPU pVCpu = pVM->apCpusR3[i];
1720
1721	uintptr_t idxShw = pVCpu->pgm.s.idxShadowModeData;
1722	if ( idxShw < RT_ELEMENTS(g_aPgmShadowModeData)
1723	&& g_aPgmShadowModeData[idxShw].pfnRelocate)
1724	g_aPgmShadowModeData[idxShw].pfnRelocate(pVCpu, offDelta);
1725	else
1726	AssertFailed();
1727
1728	uintptr_t const idxGst = pVCpu->pgm.s.idxGuestModeData;
1729	if ( idxGst < RT_ELEMENTS(g_aPgmGuestModeData)
1730	&& g_aPgmGuestModeData[idxGst].pfnRelocate)
1731	g_aPgmGuestModeData[idxGst].pfnRelocate(pVCpu, offDelta);
1732	else
1733	AssertFailed();
1734	}
1735
1736	/*
1737	* Ram ranges.
1738	*/
1739	if (pVM->pgm.s.pRamRangesXR3)
1740	pgmR3PhysRelinkRamRanges(pVM);
1741
1742	/*
1743	* The Zero page.
1744	*/
1745	pVM->pgm.s.pvZeroPgR0 = MMHyperR3ToR0(pVM, pVM->pgm.s.pvZeroPgR3);
1746	AssertRelease(pVM->pgm.s.pvZeroPgR0 != NIL_RTR0PTR);
1747
1748	/*
1749	* The page pool.
1750	*/
1751	pgmR3PoolRelocate(pVM);
1752	}
1753
1754
1755	/**
1756	* Resets a virtual CPU when unplugged.
1757	*
1758	* @param pVM The cross context VM structure.
1759	* @param pVCpu The cross context virtual CPU structure.
1760	*/
1761	VMMR3DECL(void) PGMR3ResetCpu(PVM pVM, PVMCPU pVCpu)
1762	{
1763	uintptr_t const idxGst = pVCpu->pgm.s.idxGuestModeData;
1764	if ( idxGst < RT_ELEMENTS(g_aPgmGuestModeData)
1765	&& g_aPgmGuestModeData[idxGst].pfnExit)
1766	{
1767	int rc = g_aPgmGuestModeData[idxGst].pfnExit(pVCpu);
1768	AssertReleaseRC(rc);
1769	}
1770	pVCpu->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
1771
1772	int rc = PGMHCChangeMode(pVM, pVCpu, PGMMODE_REAL);
1773	AssertReleaseRC(rc);
1774
1775	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
1776
1777	pgmR3PoolResetUnpluggedCpu(pVM, pVCpu);
1778
1779	/*
1780	* Re-init other members.
1781	*/
1782	pVCpu->pgm.s.fA20Enabled = true;
1783	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
1784
1785	/*
1786	* Clear the FFs PGM owns.
1787	*/
1788	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1789	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
1790	}
1791
1792
1793	/**
1794	* The VM is being reset.
1795	*
1796	* For the PGM component this means that any PD write monitors
1797	* needs to be removed.
1798	*
1799	* @param pVM The cross context VM structure.
1800	*/
1801	VMMR3_INT_DECL(void) PGMR3Reset(PVM pVM)
1802	{
1803	LogFlow(("PGMR3Reset:\n"));
1804	VM_ASSERT_EMT(pVM);
1805
1806	PGM_LOCK_VOID(pVM);
1807
1808	/*
1809	* Exit the guest paging mode before the pgm pool gets reset.
1810	* Important to clean up the amd64 case.
1811	*/
1812	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1813	{
1814	PVMCPU pVCpu = pVM->apCpusR3[i];
1815	uintptr_t const idxGst = pVCpu->pgm.s.idxGuestModeData;
1816	if ( idxGst < RT_ELEMENTS(g_aPgmGuestModeData)
1817	&& g_aPgmGuestModeData[idxGst].pfnExit)
1818	{
1819	int rc = g_aPgmGuestModeData[idxGst].pfnExit(pVCpu);
1820	AssertReleaseRC(rc);
1821	}
1822	pVCpu->pgm.s.GCPhysCR3 = NIL_RTGCPHYS;
1823	}
1824
1825	#ifdef DEBUG
1826	DBGFR3_INFO_LOG_SAFE(pVM, "mappings", NULL);
1827	DBGFR3_INFO_LOG_SAFE(pVM, "handlers", "all nostat");
1828	#endif
1829
1830	/*
1831	* Switch mode back to real mode. (Before resetting the pgm pool!)
1832	*/
1833	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1834	{
1835	PVMCPU pVCpu = pVM->apCpusR3[i];
1836
1837	int rc = PGMHCChangeMode(pVM, pVCpu, PGMMODE_REAL);
1838	AssertReleaseRC(rc);
1839
1840	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cGuestModeChanges);
1841	STAM_REL_COUNTER_RESET(&pVCpu->pgm.s.cA20Changes);
1842	}
1843
1844	/*
1845	* Reset the shadow page pool.
1846	*/
1847	pgmR3PoolReset(pVM);
1848
1849	/*
1850	* Re-init various other members and clear the FFs that PGM owns.
1851	*/
1852	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1853	{
1854	PVMCPU pVCpu = pVM->apCpusR3[i];
1855
1856	pVCpu->pgm.s.fGst32BitPageSizeExtension = false;
1857	PGMNotifyNxeChanged(pVCpu, false);
1858
1859	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1860	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
1861
1862	if (!pVCpu->pgm.s.fA20Enabled)
1863	{
1864	pVCpu->pgm.s.fA20Enabled = true;
1865	pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
1866	#ifdef PGM_WITH_A20
1867	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1868	pgmR3RefreshShadowModeAfterA20Change(pVCpu);
1869	HMFlushTlb(pVCpu);
1870	#endif
1871	}
1872	}
1873
1874	//pgmLogState(pVM);
1875	PGM_UNLOCK(pVM);
1876	}
1877
1878
1879	/**
1880	* Memory setup after VM construction or reset.
1881	*
1882	* @param pVM The cross context VM structure.
1883	* @param fAtReset Indicates the context, after reset if @c true or after
1884	* construction if @c false.
1885	*/
1886	VMMR3_INT_DECL(void) PGMR3MemSetup(PVM pVM, bool fAtReset)
1887	{
1888	if (fAtReset)
1889	{
1890	PGM_LOCK_VOID(pVM);
1891
1892	int rc = pgmR3PhysRamZeroAll(pVM);
1893	AssertReleaseRC(rc);
1894
1895	rc = pgmR3PhysRomReset(pVM);
1896	AssertReleaseRC(rc);
1897
1898	PGM_UNLOCK(pVM);
1899	}
1900	}
1901
1902
1903	#ifdef VBOX_STRICT
1904	/**
1905	* VM state change callback for clearing fNoMorePhysWrites after
1906	* a snapshot has been created.
1907	*/
1908	static DECLCALLBACK(void) pgmR3ResetNoMorePhysWritesFlag(PUVM pUVM, VMSTATE enmState, VMSTATE enmOldState, void *pvUser)
1909	{
1910	if ( enmState == VMSTATE_RUNNING
1911	\|\| enmState == VMSTATE_RESUMING)
1912	pUVM->pVM->pgm.s.fNoMorePhysWrites = false;
1913	NOREF(enmOldState); NOREF(pvUser);
1914	}
1915	#endif
1916
1917	/**
1918	* Private API to reset fNoMorePhysWrites.
1919	*/
1920	VMMR3_INT_DECL(void) PGMR3ResetNoMorePhysWritesFlag(PVM pVM)
1921	{
1922	pVM->pgm.s.fNoMorePhysWrites = false;
1923	}
1924
1925	/**
1926	* Terminates the PGM.
1927	*
1928	* @returns VBox status code.
1929	* @param pVM The cross context VM structure.
1930	*/
1931	VMMR3DECL(int) PGMR3Term(PVM pVM)
1932	{
1933	/* Must free shared pages here. */
1934	PGM_LOCK_VOID(pVM);
1935	pgmR3PhysRamTerm(pVM);
1936	pgmR3PhysRomTerm(pVM);
1937	PGM_UNLOCK(pVM);
1938
1939	PGMDeregisterStringFormatTypes();
1940	return PDMR3CritSectDelete(pVM, &pVM->pgm.s.CritSectX);
1941	}
1942
1943
1944	/**
1945	* Show paging mode.
1946	*
1947	* @param pVM The cross context VM structure.
1948	* @param pHlp The info helpers.
1949	* @param pszArgs "all" (default), "guest", "shadow" or "host".
1950	*/
1951	static DECLCALLBACK(void) pgmR3InfoMode(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
1952	{
1953	/* digest argument. */
1954	bool fGuest, fShadow, fHost;
1955	if (pszArgs)
1956	pszArgs = RTStrStripL(pszArgs);
1957	if (!pszArgs \|\| !*pszArgs \|\| strstr(pszArgs, "all"))
1958	fShadow = fHost = fGuest = true;
1959	else
1960	{
1961	fShadow = fHost = fGuest = false;
1962	if (strstr(pszArgs, "guest"))
1963	fGuest = true;
1964	if (strstr(pszArgs, "shadow"))
1965	fShadow = true;
1966	if (strstr(pszArgs, "host"))
1967	fHost = true;
1968	}
1969
1970	PVMCPU pVCpu = VMMGetCpu(pVM);
1971	if (!pVCpu)
1972	pVCpu = pVM->apCpusR3[0];
1973
1974
1975	/* print info. */
1976	if (fGuest)
1977	{
1978	pHlp->pfnPrintf(pHlp, "Guest paging mode (VCPU #%u): %s (changed %RU64 times), A20 %s (changed %RU64 times)\n",
1979	pVCpu->idCpu, PGMGetModeName(pVCpu->pgm.s.enmGuestMode), pVCpu->pgm.s.cGuestModeChanges.c,
1980	pVCpu->pgm.s.fA20Enabled ? "enabled" : "disabled", pVCpu->pgm.s.cA20Changes.c);
1981	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX_EPT
1982	if (pVCpu->pgm.s.enmGuestSlatMode != PGMSLAT_INVALID)
1983	pHlp->pfnPrintf(pHlp, "Guest SLAT mode (VCPU #%u): %s\n", pVCpu->idCpu,
1984	PGMGetSlatModeName(pVCpu->pgm.s.enmGuestSlatMode));
1985	#endif
1986	}
1987	if (fShadow)
1988	pHlp->pfnPrintf(pHlp, "Shadow paging mode (VCPU #%u): %s\n", pVCpu->idCpu, PGMGetModeName(pVCpu->pgm.s.enmShadowMode));
1989	if (fHost)
1990	{
1991	const char *psz;
1992	switch (pVM->pgm.s.enmHostMode)
1993	{
1994	case SUPPAGINGMODE_INVALID: psz = "invalid"; break;
1995	case SUPPAGINGMODE_32_BIT: psz = "32-bit"; break;
1996	case SUPPAGINGMODE_32_BIT_GLOBAL: psz = "32-bit+G"; break;
1997	case SUPPAGINGMODE_PAE: psz = "PAE"; break;
1998	case SUPPAGINGMODE_PAE_GLOBAL: psz = "PAE+G"; break;
1999	case SUPPAGINGMODE_PAE_NX: psz = "PAE+NX"; break;
2000	case SUPPAGINGMODE_PAE_GLOBAL_NX: psz = "PAE+G+NX"; break;
2001	case SUPPAGINGMODE_AMD64: psz = "AMD64"; break;
2002	case SUPPAGINGMODE_AMD64_GLOBAL: psz = "AMD64+G"; break;
2003	case SUPPAGINGMODE_AMD64_NX: psz = "AMD64+NX"; break;
2004	case SUPPAGINGMODE_AMD64_GLOBAL_NX: psz = "AMD64+G+NX"; break;
2005	default: psz = "unknown"; break;
2006	}
2007	pHlp->pfnPrintf(pHlp, "Host paging mode: %s\n", psz);
2008	}
2009	}
2010
2011
2012	/**
2013	* Dump registered MMIO ranges to the log.
2014	*
2015	* @param pVM The cross context VM structure.
2016	* @param pHlp The info helpers.
2017	* @param pszArgs Arguments, ignored.
2018	*/
2019	static DECLCALLBACK(void) pgmR3PhysInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2020	{
2021	bool const fVerbose = pszArgs && strstr(pszArgs, "verbose") != NULL;
2022
2023	pHlp->pfnPrintf(pHlp,
2024	"RAM ranges (pVM=%p)\n"
2025	"%.s %.s\n",
2026	pVM,
2027	sizeof(RTGCPHYS) * 4 + 1, "GC Phys Range ",
2028	sizeof(RTHCPTR) * 2, "pvHC ");
2029
2030	for (PPGMRAMRANGE pCur = pVM->pgm.s.pRamRangesXR3; pCur; pCur = pCur->pNextR3)
2031	{
2032	pHlp->pfnPrintf(pHlp,
2033	"%RGp-%RGp %RHv %s\n",
2034	pCur->GCPhys,
2035	pCur->GCPhysLast,
2036	pCur->pvR3,
2037	pCur->pszDesc);
2038	if (fVerbose)
2039	{
2040	RTGCPHYS const cPages = pCur->cb >> X86_PAGE_SHIFT;
2041	RTGCPHYS iPage = 0;
2042	while (iPage < cPages)
2043	{
2044	RTGCPHYS const iFirstPage = iPage;
2045	PGMPAGETYPE const enmType = (PGMPAGETYPE)PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]);
2046	do
2047	iPage++;
2048	while (iPage < cPages && (PGMPAGETYPE)PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]) == enmType);
2049	const char *pszType;
2050	const char *pszMore = NULL;
2051	switch (enmType)
2052	{
2053	case PGMPAGETYPE_RAM:
2054	pszType = "RAM";
2055	break;
2056
2057	case PGMPAGETYPE_MMIO2:
2058	pszType = "MMIO2";
2059	break;
2060
2061	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
2062	pszType = "MMIO2-alias-MMIO";
2063	break;
2064
2065	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
2066	pszType = "special-alias-MMIO";
2067	break;
2068
2069	case PGMPAGETYPE_ROM_SHADOW:
2070	case PGMPAGETYPE_ROM:
2071	{
2072	pszType = enmType == PGMPAGETYPE_ROM_SHADOW ? "ROM-shadowed" : "ROM";
2073
2074	RTGCPHYS const GCPhysFirstPg = iFirstPage * X86_PAGE_SIZE;
2075	PPGMROMRANGE pRom = pVM->pgm.s.pRomRangesR3;
2076	while (pRom && GCPhysFirstPg > pRom->GCPhysLast)
2077	pRom = pRom->pNextR3;
2078	if (pRom && GCPhysFirstPg - pRom->GCPhys < pRom->cb)
2079	pszMore = pRom->pszDesc;
2080	break;
2081	}
2082
2083	case PGMPAGETYPE_MMIO:
2084	{
2085	pszType = "MMIO";
2086	PGM_LOCK_VOID(pVM);
2087	PPGMPHYSHANDLER pHandler = pgmHandlerPhysicalLookup(pVM, iFirstPage * X86_PAGE_SIZE);
2088	if (pHandler)
2089	pszMore = pHandler->pszDesc;
2090	PGM_UNLOCK(pVM);
2091	break;
2092	}
2093
2094	case PGMPAGETYPE_INVALID:
2095	pszType = "invalid";
2096	break;
2097
2098	default:
2099	pszType = "bad";
2100	break;
2101	}
2102	if (pszMore)
2103	pHlp->pfnPrintf(pHlp, " %RGp-%RGp %-20s %s\n",
2104	pCur->GCPhys + iFirstPage * X86_PAGE_SIZE,
2105	pCur->GCPhys + iPage * X86_PAGE_SIZE - 1,
2106	pszType, pszMore);
2107	else
2108	pHlp->pfnPrintf(pHlp, " %RGp-%RGp %s\n",
2109	pCur->GCPhys + iFirstPage * X86_PAGE_SIZE,
2110	pCur->GCPhys + iPage * X86_PAGE_SIZE - 1,
2111	pszType);
2112
2113	}
2114	}
2115	}
2116	}
2117
2118
2119	/**
2120	* Dump the page directory to the log.
2121	*
2122	* @param pVM The cross context VM structure.
2123	* @param pHlp The info helpers.
2124	* @param pszArgs Arguments, ignored.
2125	*/
2126	static DECLCALLBACK(void) pgmR3InfoCr3(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2127	{
2128	/** @todo SMP support!! */
2129	PVMCPU pVCpu = pVM->apCpusR3[0];
2130
2131	/** @todo fix this! Convert the PGMR3DumpHierarchyHC functions to do guest stuff. */
2132	/* Big pages supported? */
2133	const bool fPSE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PSE);
2134
2135	/* Global pages supported? */
2136	const bool fPGE = !!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE);
2137
2138	NOREF(pszArgs);
2139
2140	/*
2141	* Get page directory addresses.
2142	*/
2143	PGM_LOCK_VOID(pVM);
2144	PX86PD pPDSrc = pgmGstGet32bitPDPtr(pVCpu);
2145	Assert(pPDSrc);
2146
2147	/*
2148	* Iterate the page directory.
2149	*/
2150	for (unsigned iPD = 0; iPD < RT_ELEMENTS(pPDSrc->a); iPD++)
2151	{
2152	X86PDE PdeSrc = pPDSrc->a[iPD];
2153	if (PdeSrc.u & X86_PDE_P)
2154	{
2155	if ((PdeSrc.u & X86_PDE_PS) && fPSE)
2156	pHlp->pfnPrintf(pHlp,
2157	"%04X - %RGp P=%d U=%d RW=%d G=%d - BIG\n",
2158	iPD,
2159	pgmGstGet4MBPhysPage(pVM, PdeSrc), PdeSrc.u & X86_PDE_P, !!(PdeSrc.u & X86_PDE_US),
2160	!!(PdeSrc.u & X86_PDE_RW), (PdeSrc.u & X86_PDE4M_G) && fPGE);
2161	else
2162	pHlp->pfnPrintf(pHlp,
2163	"%04X - %RGp P=%d U=%d RW=%d [G=%d]\n",
2164	iPD,
2165	(RTGCPHYS)(PdeSrc.u & X86_PDE_PG_MASK), PdeSrc.u & X86_PDE_P, !!(PdeSrc.u & X86_PDE_US),
2166	!!(PdeSrc.u & X86_PDE_RW), (PdeSrc.u & X86_PDE4M_G) && fPGE);
2167	}
2168	}
2169	PGM_UNLOCK(pVM);
2170	}
2171
2172
2173	/**
2174	* Called by pgmPoolFlushAllInt prior to flushing the pool.
2175	*
2176	* @returns VBox status code, fully asserted.
2177	* @param pVCpu The cross context virtual CPU structure.
2178	*/
2179	int pgmR3ExitShadowModeBeforePoolFlush(PVMCPU pVCpu)
2180	{
2181	/* Unmap the old CR3 value before flushing everything. */
2182	int rc = VINF_SUCCESS;
2183	uintptr_t idxBth = pVCpu->pgm.s.idxBothModeData;
2184	if ( idxBth < RT_ELEMENTS(g_aPgmBothModeData)
2185	&& g_aPgmBothModeData[idxBth].pfnUnmapCR3)
2186	{
2187	rc = g_aPgmBothModeData[idxBth].pfnUnmapCR3(pVCpu);
2188	AssertRC(rc);
2189	}
2190
2191	/* Exit the current shadow paging mode as well; nested paging and EPT use a root CR3 which will get flushed here. */
2192	uintptr_t idxShw = pVCpu->pgm.s.idxShadowModeData;
2193	if ( idxShw < RT_ELEMENTS(g_aPgmShadowModeData)
2194	&& g_aPgmShadowModeData[idxShw].pfnExit)
2195	{
2196	rc = g_aPgmShadowModeData[idxShw].pfnExit(pVCpu);
2197	AssertMsgRCReturn(rc, ("Exit failed for shadow mode %d: %Rrc\n", pVCpu->pgm.s.enmShadowMode, rc), rc);
2198	}
2199
2200	Assert(pVCpu->pgm.s.pShwPageCR3R3 == NULL);
2201	return rc;
2202	}
2203
2204
2205	/**
2206	* Called by pgmPoolFlushAllInt after flushing the pool.
2207	*
2208	* @returns VBox status code, fully asserted.
2209	* @param pVM The cross context VM structure.
2210	* @param pVCpu The cross context virtual CPU structure.
2211	*/
2212	int pgmR3ReEnterShadowModeAfterPoolFlush(PVM pVM, PVMCPU pVCpu)
2213	{
2214	pVCpu->pgm.s.enmShadowMode = PGMMODE_INVALID;
2215	int rc = PGMHCChangeMode(pVM, pVCpu, PGMGetGuestMode(pVCpu));
2216	Assert(VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
2217	AssertRCReturn(rc, rc);
2218	AssertRCSuccessReturn(rc, VERR_IPE_UNEXPECTED_INFO_STATUS);
2219
2220	Assert(pVCpu->pgm.s.pShwPageCR3R3 != NULL \|\| pVCpu->pgm.s.enmShadowMode == PGMMODE_NONE);
2221	AssertMsg( pVCpu->pgm.s.enmShadowMode >= PGMMODE_NESTED_32BIT
2222	\|\| CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu),
2223	("%RHp != %RHp %s\n", (RTHCPHYS)CPUMGetHyperCR3(pVCpu), PGMGetHyperCR3(pVCpu), PGMGetModeName(pVCpu->pgm.s.enmShadowMode)));
2224	return rc;
2225	}
2226
2227
2228	/**
2229	* Called by PGMR3PhysSetA20 after changing the A20 state.
2230	*
2231	* @param pVCpu The cross context virtual CPU structure.
2232	*/
2233	void pgmR3RefreshShadowModeAfterA20Change(PVMCPU pVCpu)
2234	{
2235	/** @todo Probably doing a bit too much here. */
2236	int rc = pgmR3ExitShadowModeBeforePoolFlush(pVCpu);
2237	AssertReleaseRC(rc);
2238	rc = pgmR3ReEnterShadowModeAfterPoolFlush(pVCpu->CTX_SUFF(pVM), pVCpu);
2239	AssertReleaseRC(rc);
2240	}
2241
2242
2243	#ifdef VBOX_WITH_DEBUGGER
2244
2245	/**
2246	* @callback_method_impl{FNDBGCCMD, The '.pgmerror' and '.pgmerroroff' commands.}
2247	*/
2248	static DECLCALLBACK(int) pgmR3CmdError(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2249	{
2250	/*
2251	* Validate input.
2252	*/
2253	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2254	PVM pVM = pUVM->pVM;
2255	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 0 \|\| (cArgs == 1 && paArgs[0].enmType == DBGCVAR_TYPE_STRING));
2256
2257	if (!cArgs)
2258	{
2259	/*
2260	* Print the list of error injection locations with status.
2261	*/
2262	DBGCCmdHlpPrintf(pCmdHlp, "PGM error inject locations:\n");
2263	DBGCCmdHlpPrintf(pCmdHlp, " handy - %RTbool\n", pVM->pgm.s.fErrInjHandyPages);
2264	}
2265	else
2266	{
2267	/*
2268	* String switch on where to inject the error.
2269	*/
2270	bool const fNewState = !strcmp(pCmd->pszCmd, "pgmerror");
2271	const char *pszWhere = paArgs[0].u.pszString;
2272	if (!strcmp(pszWhere, "handy"))
2273	ASMAtomicWriteBool(&pVM->pgm.s.fErrInjHandyPages, fNewState);
2274	else
2275	return DBGCCmdHlpPrintf(pCmdHlp, "error: Invalid 'where' value: %s.\n", pszWhere);
2276	DBGCCmdHlpPrintf(pCmdHlp, "done\n");
2277	}
2278	return VINF_SUCCESS;
2279	}
2280
2281
2282	/**
2283	* @callback_method_impl{FNDBGCCMD, The '.pgmsync' command.}
2284	*/
2285	static DECLCALLBACK(int) pgmR3CmdSync(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2286	{
2287	/*
2288	* Validate input.
2289	*/
2290	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
2291	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2292	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
2293	if (!pVCpu)
2294	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
2295
2296	/*
2297	* Force page directory sync.
2298	*/
2299	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2300
2301	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Forcing page directory sync.\n");
2302	if (RT_FAILURE(rc))
2303	return rc;
2304
2305	return VINF_SUCCESS;
2306	}
2307
2308	#ifdef VBOX_STRICT
2309
2310	/**
2311	* EMT callback for pgmR3CmdAssertCR3.
2312	*
2313	* @returns VBox status code.
2314	* @param pUVM The user mode VM handle.
2315	* @param pcErrors Where to return the error count.
2316	*/
2317	static DECLCALLBACK(int) pgmR3CmdAssertCR3EmtWorker(PUVM pUVM, unsigned *pcErrors)
2318	{
2319	PVM pVM = pUVM->pVM;
2320	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2321	PVMCPU pVCpu = VMMGetCpu(pVM);
2322
2323	*pcErrors = PGMAssertCR3(pVM, pVCpu, CPUMGetGuestCR3(pVCpu), CPUMGetGuestCR4(pVCpu));
2324
2325	return VINF_SUCCESS;
2326	}
2327
2328
2329	/**
2330	* @callback_method_impl{FNDBGCCMD, The '.pgmassertcr3' command.}
2331	*/
2332	static DECLCALLBACK(int) pgmR3CmdAssertCR3(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2333	{
2334	/*
2335	* Validate input.
2336	*/
2337	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
2338	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2339
2340	int rc = DBGCCmdHlpPrintf(pCmdHlp, "Checking shadow CR3 page tables for consistency.\n");
2341	if (RT_FAILURE(rc))
2342	return rc;
2343
2344	unsigned cErrors = 0;
2345	rc = VMR3ReqCallWaitU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp), (PFNRT)pgmR3CmdAssertCR3EmtWorker, 2, pUVM, &cErrors);
2346	if (RT_FAILURE(rc))
2347	return DBGCCmdHlpFail(pCmdHlp, pCmd, "VMR3ReqCallWaitU failed: %Rrc", rc);
2348	if (cErrors > 0)
2349	return DBGCCmdHlpFail(pCmdHlp, pCmd, "PGMAssertCR3: %u error(s)", cErrors);
2350	return DBGCCmdHlpPrintf(pCmdHlp, "PGMAssertCR3: OK\n");
2351	}
2352
2353	#endif /* VBOX_STRICT */
2354
2355	/**
2356	* @callback_method_impl{FNDBGCCMD, The '.pgmsyncalways' command.}
2357	*/
2358	static DECLCALLBACK(int) pgmR3CmdSyncAlways(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2359	{
2360	/*
2361	* Validate input.
2362	*/
2363	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
2364	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2365	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, DBGCCmdHlpGetCurrentCpu(pCmdHlp));
2366	if (!pVCpu)
2367	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid CPU ID");
2368
2369	/*
2370	* Force page directory sync.
2371	*/
2372	int rc;
2373	if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS)
2374	{
2375	ASMAtomicAndU32(&pVCpu->pgm.s.fSyncFlags, ~PGM_SYNC_ALWAYS);
2376	rc = DBGCCmdHlpPrintf(pCmdHlp, "Disabled permanent forced page directory syncing.\n");
2377	}
2378	else
2379	{
2380	ASMAtomicOrU32(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_ALWAYS);
2381	VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
2382	rc = DBGCCmdHlpPrintf(pCmdHlp, "Enabled permanent forced page directory syncing.\n");
2383	}
2384	return rc;
2385	}
2386
2387
2388	/**
2389	* @callback_method_impl{FNDBGCCMD, The '.pgmphystofile' command.}
2390	*/
2391	static DECLCALLBACK(int) pgmR3CmdPhysToFile(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2392	{
2393	/*
2394	* Validate input.
2395	*/
2396	NOREF(pCmd);
2397	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2398	PVM pVM = pUVM->pVM;
2399	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 1 \|\| cArgs == 2);
2400	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType == DBGCVAR_TYPE_STRING);
2401	if (cArgs == 2)
2402	{
2403	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, paArgs[1].enmType == DBGCVAR_TYPE_STRING);
2404	if (strcmp(paArgs[1].u.pszString, "nozero"))
2405	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid 2nd argument '%s', must be 'nozero'.\n", paArgs[1].u.pszString);
2406	}
2407	bool fIncZeroPgs = cArgs < 2;
2408
2409	/*
2410	* Open the output file and get the ram parameters.
2411	*/
2412	RTFILE hFile;
2413	int rc = RTFileOpen(&hFile, paArgs[0].u.pszString, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_WRITE);
2414	if (RT_FAILURE(rc))
2415	return DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileOpen(,'%s',) -> %Rrc.\n", paArgs[0].u.pszString, rc);
2416
2417	uint32_t cbRamHole = 0;
2418	CFGMR3QueryU32Def(CFGMR3GetRootU(pUVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
2419	uint64_t cbRam = 0;
2420	CFGMR3QueryU64Def(CFGMR3GetRootU(pUVM), "RamSize", &cbRam, 0);
2421	RTGCPHYS GCPhysEnd = cbRam + cbRamHole;
2422
2423	/*
2424	* Dump the physical memory, page by page.
2425	*/
2426	RTGCPHYS GCPhys = 0;
2427	char abZeroPg[PAGE_SIZE];
2428	RT_ZERO(abZeroPg);
2429
2430	PGM_LOCK_VOID(pVM);
2431	for (PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesXR3;
2432	pRam && pRam->GCPhys < GCPhysEnd && RT_SUCCESS(rc);
2433	pRam = pRam->pNextR3)
2434	{
2435	/* fill the gap */
2436	if (pRam->GCPhys > GCPhys && fIncZeroPgs)
2437	{
2438	while (pRam->GCPhys > GCPhys && RT_SUCCESS(rc))
2439	{
2440	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
2441	GCPhys += PAGE_SIZE;
2442	}
2443	}
2444
2445	PCPGMPAGE pPage = &pRam->aPages[0];
2446	while (GCPhys < pRam->GCPhysLast && RT_SUCCESS(rc))
2447	{
2448	if ( PGM_PAGE_IS_ZERO(pPage)
2449	\|\| PGM_PAGE_IS_BALLOONED(pPage))
2450	{
2451	if (fIncZeroPgs)
2452	{
2453	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
2454	if (RT_FAILURE(rc))
2455	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
2456	}
2457	}
2458	else
2459	{
2460	switch (PGM_PAGE_GET_TYPE(pPage))
2461	{
2462	case PGMPAGETYPE_RAM:
2463	case PGMPAGETYPE_ROM_SHADOW: /* trouble?? */
2464	case PGMPAGETYPE_ROM:
2465	case PGMPAGETYPE_MMIO2:
2466	{
2467	void const *pvPage;
2468	PGMPAGEMAPLOCK Lock;
2469	rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhys, &pvPage, &Lock);
2470	if (RT_SUCCESS(rc))
2471	{
2472	rc = RTFileWrite(hFile, pvPage, PAGE_SIZE, NULL);
2473	PGMPhysReleasePageMappingLock(pVM, &Lock);
2474	if (RT_FAILURE(rc))
2475	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
2476	}
2477	else
2478	DBGCCmdHlpPrintf(pCmdHlp, "error: PGMPhysGCPhys2CCPtrReadOnly -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
2479	break;
2480	}
2481
2482	default:
2483	AssertFailed();
2484	RT_FALL_THRU();
2485	case PGMPAGETYPE_MMIO:
2486	case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
2487	case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
2488	if (fIncZeroPgs)
2489	{
2490	rc = RTFileWrite(hFile, abZeroPg, PAGE_SIZE, NULL);
2491	if (RT_FAILURE(rc))
2492	DBGCCmdHlpPrintf(pCmdHlp, "error: RTFileWrite -> %Rrc at GCPhys=%RGp.\n", rc, GCPhys);
2493	}
2494	break;
2495	}
2496	}
2497
2498
2499	/* advance */
2500	GCPhys += PAGE_SIZE;
2501	pPage++;
2502	}
2503	}
2504	PGM_UNLOCK(pVM);
2505
2506	RTFileClose(hFile);
2507	if (RT_SUCCESS(rc))
2508	return DBGCCmdHlpPrintf(pCmdHlp, "Successfully saved physical memory to '%s'.\n", paArgs[0].u.pszString);
2509	return VINF_SUCCESS;
2510	}
2511
2512	#endif /* VBOX_WITH_DEBUGGER */
2513
2514	/**
2515	* pvUser argument of the pgmR3CheckIntegrity*Node callbacks.
2516	*/
2517	typedef struct PGMCHECKINTARGS
2518	{
2519	bool fLeftToRight; /*< true: left-to-right; false: right-to-left. /
2520	PPGMPHYSHANDLER pPrevPhys;
2521	PVM pVM;
2522	} PGMCHECKINTARGS, *PPGMCHECKINTARGS;
2523
2524	/**
2525	* Validate a node in the physical handler tree.
2526	*
2527	* @returns 0 on if ok, other wise 1.
2528	* @param pNode The handler node.
2529	* @param pvUser pVM.
2530	*/
2531	static DECLCALLBACK(int) pgmR3CheckIntegrityPhysHandlerNode(PAVLROGCPHYSNODECORE pNode, void *pvUser)
2532	{
2533	PPGMCHECKINTARGS pArgs = (PPGMCHECKINTARGS)pvUser;
2534	PPGMPHYSHANDLER pCur = (PPGMPHYSHANDLER)pNode;
2535	AssertReleaseReturn(!((uintptr_t)pCur & 7), 1);
2536	AssertReleaseMsg(pCur->Core.Key <= pCur->Core.KeyLast,
2537	("pCur=%p %RGp-%RGp %s\n", pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
2538	AssertReleaseMsg( !pArgs->pPrevPhys
2539	\|\| ( pArgs->fLeftToRight
2540	? pArgs->pPrevPhys->Core.KeyLast < pCur->Core.Key
2541	: pArgs->pPrevPhys->Core.KeyLast > pCur->Core.Key),
2542	("pPrevPhys=%p %RGp-%RGp %s\n"
2543	" pCur=%p %RGp-%RGp %s\n",
2544	pArgs->pPrevPhys, pArgs->pPrevPhys->Core.Key, pArgs->pPrevPhys->Core.KeyLast, pArgs->pPrevPhys->pszDesc,
2545	pCur, pCur->Core.Key, pCur->Core.KeyLast, pCur->pszDesc));
2546	pArgs->pPrevPhys = pCur;
2547	return 0;
2548	}
2549
2550
2551	/**
2552	* Perform an integrity check on the PGM component.
2553	*
2554	* @returns VINF_SUCCESS if everything is fine.
2555	* @returns VBox error status after asserting on integrity breach.
2556	* @param pVM The cross context VM structure.
2557	*/
2558	VMMR3DECL(int) PGMR3CheckIntegrity(PVM pVM)
2559	{
2560	/*
2561	* Check the trees.
2562	*/
2563	int cErrors = 0;
2564	const PGMCHECKINTARGS LeftToRight = { true, NULL, pVM };
2565	const PGMCHECKINTARGS RightToLeft = { false, NULL, pVM };
2566	PGMCHECKINTARGS Args = LeftToRight;
2567	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, true, pgmR3CheckIntegrityPhysHandlerNode, &Args);
2568	Args = RightToLeft;
2569	cErrors += RTAvlroGCPhysDoWithAll(&pVM->pgm.s.pTreesR3->PhysHandlers, false, pgmR3CheckIntegrityPhysHandlerNode, &Args);
2570
2571	return !cErrors ? VINF_SUCCESS : VERR_INTERNAL_ERROR;
2572	}
2573

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source: vbox/trunk/src/VBox/VMM/VMMR3/PGM.cpp@ 92392

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