VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMAll/PGMAll.cpp@ 28754

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1/* $Id: PGMAll.cpp 28754 2010-04-26 15:18:55Z vboxsync $ */
2/** @file
3 * PGM - Page Manager and Monitor - All context code.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22/*******************************************************************************
23* Header Files *
24*******************************************************************************/
25#define LOG_GROUP LOG_GROUP_PGM
26#include <VBox/pgm.h>
27#include <VBox/cpum.h>
28#include <VBox/selm.h>
29#include <VBox/iom.h>
30#include <VBox/sup.h>
31#include <VBox/mm.h>
32#include <VBox/stam.h>
33#include <VBox/csam.h>
34#include <VBox/patm.h>
35#include <VBox/trpm.h>
36#include <VBox/rem.h>
37#include <VBox/em.h>
38#include <VBox/hwaccm.h>
39#include <VBox/hwacc_vmx.h>
40#include "../PGMInternal.h"
41#include <VBox/vm.h>
42#include "../PGMInline.h"
43#include <iprt/assert.h>
44#include <iprt/asm.h>
45#include <iprt/string.h>
46#include <VBox/log.h>
47#include <VBox/param.h>
48#include <VBox/err.h>
49
50
51/*******************************************************************************
52* Structures and Typedefs *
53*******************************************************************************/
54/**
55 * Stated structure for PGM_GST_NAME(HandlerVirtualUpdate) that's
56 * passed to PGM_GST_NAME(VirtHandlerUpdateOne) during enumeration.
57 */
58typedef struct PGMHVUSTATE
59{
60 /** The VM handle. */
61 PVM pVM;
62 /** The VMCPU handle. */
63 PVMCPU pVCpu;
64 /** The todo flags. */
65 RTUINT fTodo;
66 /** The CR4 register value. */
67 uint32_t cr4;
68} PGMHVUSTATE, *PPGMHVUSTATE;
69
70
71/*******************************************************************************
72* Internal Functions *
73*******************************************************************************/
74DECLINLINE(int) pgmShwGetLongModePDPtr(PVMCPU pVCpu, RTGCPTR64 GCPtr, PX86PML4E *ppPml4e, PX86PDPT *ppPdpt, PX86PDPAE *ppPD);
75DECLINLINE(int) pgmShwGetPaePoolPagePD(PPGMCPU pPGM, RTGCPTR GCPtr, PPGMPOOLPAGE *ppShwPde);
76
77/*
78 * Shadow - 32-bit mode
79 */
80#define PGM_SHW_TYPE PGM_TYPE_32BIT
81#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
82#include "PGMAllShw.h"
83
84/* Guest - real mode */
85#define PGM_GST_TYPE PGM_TYPE_REAL
86#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
87#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
88#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
89#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
90#include "PGMGstDefs.h"
91#include "PGMAllGst.h"
92#include "PGMAllBth.h"
93#undef BTH_PGMPOOLKIND_PT_FOR_PT
94#undef BTH_PGMPOOLKIND_ROOT
95#undef PGM_BTH_NAME
96#undef PGM_GST_TYPE
97#undef PGM_GST_NAME
98
99/* Guest - protected mode */
100#define PGM_GST_TYPE PGM_TYPE_PROT
101#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
102#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
103#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_PHYS
104#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD_PHYS
105#include "PGMGstDefs.h"
106#include "PGMAllGst.h"
107#include "PGMAllBth.h"
108#undef BTH_PGMPOOLKIND_PT_FOR_PT
109#undef BTH_PGMPOOLKIND_ROOT
110#undef PGM_BTH_NAME
111#undef PGM_GST_TYPE
112#undef PGM_GST_NAME
113
114/* Guest - 32-bit mode */
115#define PGM_GST_TYPE PGM_TYPE_32BIT
116#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
117#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
118#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT
119#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB
120#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_32BIT_PD
121#include "PGMGstDefs.h"
122#include "PGMAllGst.h"
123#include "PGMAllBth.h"
124#undef BTH_PGMPOOLKIND_PT_FOR_BIG
125#undef BTH_PGMPOOLKIND_PT_FOR_PT
126#undef BTH_PGMPOOLKIND_ROOT
127#undef PGM_BTH_NAME
128#undef PGM_GST_TYPE
129#undef PGM_GST_NAME
130
131#undef PGM_SHW_TYPE
132#undef PGM_SHW_NAME
133
134
135/*
136 * Shadow - PAE mode
137 */
138#define PGM_SHW_TYPE PGM_TYPE_PAE
139#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
140#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
141#include "PGMAllShw.h"
142
143/* Guest - real mode */
144#define PGM_GST_TYPE PGM_TYPE_REAL
145#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
146#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
147#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
148#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
149#include "PGMGstDefs.h"
150#include "PGMAllBth.h"
151#undef BTH_PGMPOOLKIND_PT_FOR_PT
152#undef BTH_PGMPOOLKIND_ROOT
153#undef PGM_BTH_NAME
154#undef PGM_GST_TYPE
155#undef PGM_GST_NAME
156
157/* Guest - protected mode */
158#define PGM_GST_TYPE PGM_TYPE_PROT
159#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
160#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
161#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
162#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_PHYS
163#include "PGMGstDefs.h"
164#include "PGMAllBth.h"
165#undef BTH_PGMPOOLKIND_PT_FOR_PT
166#undef BTH_PGMPOOLKIND_ROOT
167#undef PGM_BTH_NAME
168#undef PGM_GST_TYPE
169#undef PGM_GST_NAME
170
171/* Guest - 32-bit mode */
172#define PGM_GST_TYPE PGM_TYPE_32BIT
173#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
174#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
175#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_32BIT_PT
176#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB
177#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT_FOR_32BIT
178#include "PGMGstDefs.h"
179#include "PGMAllBth.h"
180#undef BTH_PGMPOOLKIND_PT_FOR_BIG
181#undef BTH_PGMPOOLKIND_PT_FOR_PT
182#undef BTH_PGMPOOLKIND_ROOT
183#undef PGM_BTH_NAME
184#undef PGM_GST_TYPE
185#undef PGM_GST_NAME
186
187
188/* Guest - PAE mode */
189#define PGM_GST_TYPE PGM_TYPE_PAE
190#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
191#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
192#define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
193#define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
194#define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PDPT
195#include "PGMGstDefs.h"
196#include "PGMAllGst.h"
197#include "PGMAllBth.h"
198#undef BTH_PGMPOOLKIND_PT_FOR_BIG
199#undef BTH_PGMPOOLKIND_PT_FOR_PT
200#undef BTH_PGMPOOLKIND_ROOT
201#undef PGM_BTH_NAME
202#undef PGM_GST_TYPE
203#undef PGM_GST_NAME
204
205#undef PGM_SHW_TYPE
206#undef PGM_SHW_NAME
207
208
209#ifndef IN_RC /* AMD64 implies VT-x/AMD-V */
210/*
211 * Shadow - AMD64 mode
212 */
213# define PGM_SHW_TYPE PGM_TYPE_AMD64
214# define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
215# include "PGMAllShw.h"
216
217/* Guest - protected mode (only used for AMD-V nested paging in 64 bits mode) */
218# define PGM_GST_TYPE PGM_TYPE_PROT
219# define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
220# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_PROT(name)
221# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PHYS
222# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_PAE_PD_PHYS
223# include "PGMGstDefs.h"
224# include "PGMAllBth.h"
225# undef BTH_PGMPOOLKIND_PT_FOR_PT
226# undef BTH_PGMPOOLKIND_ROOT
227# undef PGM_BTH_NAME
228# undef PGM_GST_TYPE
229# undef PGM_GST_NAME
230
231# ifdef VBOX_WITH_64_BITS_GUESTS
232/* Guest - AMD64 mode */
233# define PGM_GST_TYPE PGM_TYPE_AMD64
234# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
235# define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
236# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_PAE_PT_FOR_PAE_PT
237# define BTH_PGMPOOLKIND_PT_FOR_BIG PGMPOOLKIND_PAE_PT_FOR_PAE_2MB
238# define BTH_PGMPOOLKIND_ROOT PGMPOOLKIND_64BIT_PML4
239# include "PGMGstDefs.h"
240# include "PGMAllGst.h"
241# include "PGMAllBth.h"
242# undef BTH_PGMPOOLKIND_PT_FOR_BIG
243# undef BTH_PGMPOOLKIND_PT_FOR_PT
244# undef BTH_PGMPOOLKIND_ROOT
245# undef PGM_BTH_NAME
246# undef PGM_GST_TYPE
247# undef PGM_GST_NAME
248# endif /* VBOX_WITH_64_BITS_GUESTS */
249
250# undef PGM_SHW_TYPE
251# undef PGM_SHW_NAME
252
253
254/*
255 * Shadow - Nested paging mode
256 */
257# define PGM_SHW_TYPE PGM_TYPE_NESTED
258# define PGM_SHW_NAME(name) PGM_SHW_NAME_NESTED(name)
259# include "PGMAllShw.h"
260
261/* Guest - real mode */
262# define PGM_GST_TYPE PGM_TYPE_REAL
263# define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
264# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_REAL(name)
265# include "PGMGstDefs.h"
266# include "PGMAllBth.h"
267# undef PGM_BTH_NAME
268# undef PGM_GST_TYPE
269# undef PGM_GST_NAME
270
271/* Guest - protected mode */
272# define PGM_GST_TYPE PGM_TYPE_PROT
273# define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
274# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PROT(name)
275# include "PGMGstDefs.h"
276# include "PGMAllBth.h"
277# undef PGM_BTH_NAME
278# undef PGM_GST_TYPE
279# undef PGM_GST_NAME
280
281/* Guest - 32-bit mode */
282# define PGM_GST_TYPE PGM_TYPE_32BIT
283# define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
284# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_32BIT(name)
285# include "PGMGstDefs.h"
286# include "PGMAllBth.h"
287# undef PGM_BTH_NAME
288# undef PGM_GST_TYPE
289# undef PGM_GST_NAME
290
291/* Guest - PAE mode */
292# define PGM_GST_TYPE PGM_TYPE_PAE
293# define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
294# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_PAE(name)
295# include "PGMGstDefs.h"
296# include "PGMAllBth.h"
297# undef PGM_BTH_NAME
298# undef PGM_GST_TYPE
299# undef PGM_GST_NAME
300
301# ifdef VBOX_WITH_64_BITS_GUESTS
302/* Guest - AMD64 mode */
303# define PGM_GST_TYPE PGM_TYPE_AMD64
304# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
305# define PGM_BTH_NAME(name) PGM_BTH_NAME_NESTED_AMD64(name)
306# include "PGMGstDefs.h"
307# include "PGMAllBth.h"
308# undef PGM_BTH_NAME
309# undef PGM_GST_TYPE
310# undef PGM_GST_NAME
311# endif /* VBOX_WITH_64_BITS_GUESTS */
312
313# undef PGM_SHW_TYPE
314# undef PGM_SHW_NAME
315
316
317/*
318 * Shadow - EPT
319 */
320# define PGM_SHW_TYPE PGM_TYPE_EPT
321# define PGM_SHW_NAME(name) PGM_SHW_NAME_EPT(name)
322# include "PGMAllShw.h"
323
324/* Guest - real mode */
325# define PGM_GST_TYPE PGM_TYPE_REAL
326# define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
327# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_REAL(name)
328# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_EPT_PT_FOR_PHYS
329# include "PGMGstDefs.h"
330# include "PGMAllBth.h"
331# undef BTH_PGMPOOLKIND_PT_FOR_PT
332# undef PGM_BTH_NAME
333# undef PGM_GST_TYPE
334# undef PGM_GST_NAME
335
336/* Guest - protected mode */
337# define PGM_GST_TYPE PGM_TYPE_PROT
338# define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
339# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PROT(name)
340# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_EPT_PT_FOR_PHYS
341# include "PGMGstDefs.h"
342# include "PGMAllBth.h"
343# undef BTH_PGMPOOLKIND_PT_FOR_PT
344# undef PGM_BTH_NAME
345# undef PGM_GST_TYPE
346# undef PGM_GST_NAME
347
348/* Guest - 32-bit mode */
349# define PGM_GST_TYPE PGM_TYPE_32BIT
350# define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
351# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_32BIT(name)
352# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_EPT_PT_FOR_PHYS
353# include "PGMGstDefs.h"
354# include "PGMAllBth.h"
355# undef BTH_PGMPOOLKIND_PT_FOR_PT
356# undef PGM_BTH_NAME
357# undef PGM_GST_TYPE
358# undef PGM_GST_NAME
359
360/* Guest - PAE mode */
361# define PGM_GST_TYPE PGM_TYPE_PAE
362# define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
363# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_PAE(name)
364# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_EPT_PT_FOR_PHYS
365# include "PGMGstDefs.h"
366# include "PGMAllBth.h"
367# undef BTH_PGMPOOLKIND_PT_FOR_PT
368# undef PGM_BTH_NAME
369# undef PGM_GST_TYPE
370# undef PGM_GST_NAME
371
372# ifdef VBOX_WITH_64_BITS_GUESTS
373/* Guest - AMD64 mode */
374# define PGM_GST_TYPE PGM_TYPE_AMD64
375# define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
376# define PGM_BTH_NAME(name) PGM_BTH_NAME_EPT_AMD64(name)
377# define BTH_PGMPOOLKIND_PT_FOR_PT PGMPOOLKIND_EPT_PT_FOR_PHYS
378# include "PGMGstDefs.h"
379# include "PGMAllBth.h"
380# undef BTH_PGMPOOLKIND_PT_FOR_PT
381# undef PGM_BTH_NAME
382# undef PGM_GST_TYPE
383# undef PGM_GST_NAME
384# endif /* VBOX_WITH_64_BITS_GUESTS */
385
386# undef PGM_SHW_TYPE
387# undef PGM_SHW_NAME
388
389#endif /* !IN_RC */
390
391
392#ifndef IN_RING3
393/**
394 * #PF Handler.
395 *
396 * @returns VBox status code (appropriate for trap handling and GC return).
397 * @param pVCpu VMCPU handle.
398 * @param uErr The trap error code.
399 * @param pRegFrame Trap register frame.
400 * @param pvFault The fault address.
401 */
402VMMDECL(int) PGMTrap0eHandler(PVMCPU pVCpu, RTGCUINT uErr, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault)
403{
404 PVM pVM = pVCpu->CTX_SUFF(pVM);
405
406 Log(("PGMTrap0eHandler: uErr=%RGx pvFault=%RGv eip=%04x:%RGv\n", uErr, pvFault, pRegFrame->cs, (RTGCPTR)pRegFrame->rip));
407 STAM_PROFILE_START(&pVCpu->pgm.s.StatRZTrap0e, a);
408 STAM_STATS({ pVCpu->pgm.s.CTX_SUFF(pStatTrap0eAttribution) = NULL; } );
409
410
411#ifdef VBOX_WITH_STATISTICS
412 /*
413 * Error code stats.
414 */
415 if (uErr & X86_TRAP_PF_US)
416 {
417 if (!(uErr & X86_TRAP_PF_P))
418 {
419 if (uErr & X86_TRAP_PF_RW)
420 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSNotPresentWrite);
421 else
422 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSNotPresentRead);
423 }
424 else if (uErr & X86_TRAP_PF_RW)
425 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSWrite);
426 else if (uErr & X86_TRAP_PF_RSVD)
427 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSReserved);
428 else if (uErr & X86_TRAP_PF_ID)
429 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSNXE);
430 else
431 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eUSRead);
432 }
433 else
434 { /* Supervisor */
435 if (!(uErr & X86_TRAP_PF_P))
436 {
437 if (uErr & X86_TRAP_PF_RW)
438 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eSVNotPresentWrite);
439 else
440 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eSVNotPresentRead);
441 }
442 else if (uErr & X86_TRAP_PF_RW)
443 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eSVWrite);
444 else if (uErr & X86_TRAP_PF_ID)
445 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eSNXE);
446 else if (uErr & X86_TRAP_PF_RSVD)
447 STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eSVReserved);
448 }
449#endif /* VBOX_WITH_STATISTICS */
450
451 /*
452 * Call the worker.
453 */
454 bool fLockTaken = false;
455 int rc = PGM_BTH_PFN(Trap0eHandler, pVCpu)(pVCpu, uErr, pRegFrame, pvFault, &fLockTaken);
456 if (fLockTaken)
457 {
458 Assert(PGMIsLockOwner(pVM));
459 pgmUnlock(pVM);
460 }
461 if (rc == VINF_PGM_SYNCPAGE_MODIFIED_PDE)
462 rc = VINF_SUCCESS;
463
464# ifdef IN_RING0
465 /* Note: hack alert for difficult to reproduce problem. */
466 if ( rc == VERR_PAGE_NOT_PRESENT /* SMP only ; disassembly might fail. */
467 || rc == VERR_PAGE_TABLE_NOT_PRESENT /* seen with UNI & SMP */
468 || rc == VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT /* seen with SMP */
469 || rc == VERR_PAGE_MAP_LEVEL4_NOT_PRESENT) /* precaution */
470 {
471 Log(("WARNING: Unexpected VERR_PAGE_TABLE_NOT_PRESENT (%d) for page fault at %RGv error code %x (rip=%RGv)\n", rc, pvFault, uErr, pRegFrame->rip));
472 /* Some kind of inconsistency in the SMP case; it's safe to just execute the instruction again; not sure about single VCPU VMs though. */
473 rc = VINF_SUCCESS;
474 }
475# endif
476
477 STAM_STATS({ if (rc == VINF_EM_RAW_GUEST_TRAP) STAM_COUNTER_INC(&pVCpu->pgm.s.StatRZTrap0eGuestPF); });
478 STAM_STATS({ if (!pVCpu->pgm.s.CTX_SUFF(pStatTrap0eAttribution))
479 pVCpu->pgm.s.CTX_SUFF(pStatTrap0eAttribution) = &pVCpu->pgm.s.StatRZTrap0eTime2Misc; });
480 STAM_PROFILE_STOP_EX(&pVCpu->pgm.s.StatRZTrap0e, pVCpu->pgm.s.CTX_SUFF(pStatTrap0eAttribution), a);
481 return rc;
482}
483#endif /* !IN_RING3 */
484
485
486/**
487 * Prefetch a page
488 *
489 * Typically used to sync commonly used pages before entering raw mode
490 * after a CR3 reload.
491 *
492 * @returns VBox status code suitable for scheduling.
493 * @retval VINF_SUCCESS on success.
494 * @retval VINF_PGM_SYNC_CR3 if we're out of shadow pages or something like that.
495 * @param pVCpu VMCPU handle.
496 * @param GCPtrPage Page to invalidate.
497 */
498VMMDECL(int) PGMPrefetchPage(PVMCPU pVCpu, RTGCPTR GCPtrPage)
499{
500 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,Prefetch), a);
501 int rc = PGM_BTH_PFN(PrefetchPage, pVCpu)(pVCpu, GCPtrPage);
502 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,Prefetch), a);
503 AssertMsg(rc == VINF_SUCCESS || rc == VINF_PGM_SYNC_CR3 || RT_FAILURE(rc), ("rc=%Rrc\n", rc));
504 return rc;
505}
506
507
508/**
509 * Gets the mapping corresponding to the specified address (if any).
510 *
511 * @returns Pointer to the mapping.
512 * @returns NULL if not
513 *
514 * @param pVM The virtual machine.
515 * @param GCPtr The guest context pointer.
516 */
517PPGMMAPPING pgmGetMapping(PVM pVM, RTGCPTR GCPtr)
518{
519 PPGMMAPPING pMapping = pVM->pgm.s.CTX_SUFF(pMappings);
520 while (pMapping)
521 {
522 if ((uintptr_t)GCPtr < (uintptr_t)pMapping->GCPtr)
523 break;
524 if ((uintptr_t)GCPtr - (uintptr_t)pMapping->GCPtr < pMapping->cb)
525 return pMapping;
526 pMapping = pMapping->CTX_SUFF(pNext);
527 }
528 return NULL;
529}
530
531
532/**
533 * Verifies a range of pages for read or write access
534 *
535 * Only checks the guest's page tables
536 *
537 * @returns VBox status code.
538 * @param pVCpu VMCPU handle.
539 * @param Addr Guest virtual address to check
540 * @param cbSize Access size
541 * @param fAccess Access type (r/w, user/supervisor (X86_PTE_*))
542 * @remarks Current not in use.
543 */
544VMMDECL(int) PGMIsValidAccess(PVMCPU pVCpu, RTGCPTR Addr, uint32_t cbSize, uint32_t fAccess)
545{
546 /*
547 * Validate input.
548 */
549 if (fAccess & ~(X86_PTE_US | X86_PTE_RW))
550 {
551 AssertMsgFailed(("PGMIsValidAccess: invalid access type %08x\n", fAccess));
552 return VERR_INVALID_PARAMETER;
553 }
554
555 uint64_t fPage;
556 int rc = PGMGstGetPage(pVCpu, (RTGCPTR)Addr, &fPage, NULL);
557 if (RT_FAILURE(rc))
558 {
559 Log(("PGMIsValidAccess: access violation for %RGv rc=%d\n", Addr, rc));
560 return VINF_EM_RAW_GUEST_TRAP;
561 }
562
563 /*
564 * Check if the access would cause a page fault
565 *
566 * Note that hypervisor page directories are not present in the guest's tables, so this check
567 * is sufficient.
568 */
569 bool fWrite = !!(fAccess & X86_PTE_RW);
570 bool fUser = !!(fAccess & X86_PTE_US);
571 if ( !(fPage & X86_PTE_P)
572 || (fWrite && !(fPage & X86_PTE_RW))
573 || (fUser && !(fPage & X86_PTE_US)) )
574 {
575 Log(("PGMIsValidAccess: access violation for %RGv attr %#llx vs %d:%d\n", Addr, fPage, fWrite, fUser));
576 return VINF_EM_RAW_GUEST_TRAP;
577 }
578 if ( RT_SUCCESS(rc)
579 && PAGE_ADDRESS(Addr) != PAGE_ADDRESS(Addr + cbSize))
580 return PGMIsValidAccess(pVCpu, Addr + PAGE_SIZE, (cbSize > PAGE_SIZE) ? cbSize - PAGE_SIZE : 1, fAccess);
581 return rc;
582}
583
584
585/**
586 * Verifies a range of pages for read or write access
587 *
588 * Supports handling of pages marked for dirty bit tracking and CSAM
589 *
590 * @returns VBox status code.
591 * @param pVCpu VMCPU handle.
592 * @param Addr Guest virtual address to check
593 * @param cbSize Access size
594 * @param fAccess Access type (r/w, user/supervisor (X86_PTE_*))
595 */
596VMMDECL(int) PGMVerifyAccess(PVMCPU pVCpu, RTGCPTR Addr, uint32_t cbSize, uint32_t fAccess)
597{
598 PVM pVM = pVCpu->CTX_SUFF(pVM);
599
600 AssertMsg(!(fAccess & ~(X86_PTE_US | X86_PTE_RW)), ("PGMVerifyAccess: invalid access type %08x\n", fAccess));
601
602 /*
603 * Get going.
604 */
605 uint64_t fPageGst;
606 int rc = PGMGstGetPage(pVCpu, (RTGCPTR)Addr, &fPageGst, NULL);
607 if (RT_FAILURE(rc))
608 {
609 Log(("PGMVerifyAccess: access violation for %RGv rc=%d\n", Addr, rc));
610 return VINF_EM_RAW_GUEST_TRAP;
611 }
612
613 /*
614 * Check if the access would cause a page fault
615 *
616 * Note that hypervisor page directories are not present in the guest's tables, so this check
617 * is sufficient.
618 */
619 const bool fWrite = !!(fAccess & X86_PTE_RW);
620 const bool fUser = !!(fAccess & X86_PTE_US);
621 if ( !(fPageGst & X86_PTE_P)
622 || (fWrite && !(fPageGst & X86_PTE_RW))
623 || (fUser && !(fPageGst & X86_PTE_US)) )
624 {
625 Log(("PGMVerifyAccess: access violation for %RGv attr %#llx vs %d:%d\n", Addr, fPageGst, fWrite, fUser));
626 return VINF_EM_RAW_GUEST_TRAP;
627 }
628
629 if (!HWACCMIsNestedPagingActive(pVM))
630 {
631 /*
632 * Next step is to verify if we protected this page for dirty bit tracking or for CSAM scanning
633 */
634 rc = PGMShwGetPage(pVCpu, (RTGCPTR)Addr, NULL, NULL);
635 if ( rc == VERR_PAGE_NOT_PRESENT
636 || rc == VERR_PAGE_TABLE_NOT_PRESENT)
637 {
638 /*
639 * Page is not present in our page tables.
640 * Try to sync it!
641 */
642 Assert(X86_TRAP_PF_RW == X86_PTE_RW && X86_TRAP_PF_US == X86_PTE_US);
643 uint32_t uErr = fAccess & (X86_TRAP_PF_RW | X86_TRAP_PF_US);
644 rc = PGM_BTH_PFN(VerifyAccessSyncPage, pVCpu)(pVCpu, Addr, fPageGst, uErr);
645 if (rc != VINF_SUCCESS)
646 return rc;
647 }
648 else
649 AssertMsg(rc == VINF_SUCCESS, ("PGMShwGetPage %RGv failed with %Rrc\n", Addr, rc));
650 }
651
652#if 0 /* def VBOX_STRICT; triggers too often now */
653 /*
654 * This check is a bit paranoid, but useful.
655 */
656 /** @note this will assert when writing to monitored pages (a bit annoying actually) */
657 uint64_t fPageShw;
658 rc = PGMShwGetPage(pVCpu, (RTGCPTR)Addr, &fPageShw, NULL);
659 if ( (rc == VERR_PAGE_NOT_PRESENT || RT_FAILURE(rc))
660 || (fWrite && !(fPageShw & X86_PTE_RW))
661 || (fUser && !(fPageShw & X86_PTE_US)) )
662 {
663 AssertMsgFailed(("Unexpected access violation for %RGv! rc=%Rrc write=%d user=%d\n",
664 Addr, rc, fWrite && !(fPageShw & X86_PTE_RW), fUser && !(fPageShw & X86_PTE_US)));
665 return VINF_EM_RAW_GUEST_TRAP;
666 }
667#endif
668
669 if ( RT_SUCCESS(rc)
670 && ( PAGE_ADDRESS(Addr) != PAGE_ADDRESS(Addr + cbSize - 1)
671 || Addr + cbSize < Addr))
672 {
673 /* Don't recursively call PGMVerifyAccess as we might run out of stack. */
674 for (;;)
675 {
676 Addr += PAGE_SIZE;
677 if (cbSize > PAGE_SIZE)
678 cbSize -= PAGE_SIZE;
679 else
680 cbSize = 1;
681 rc = PGMVerifyAccess(pVCpu, Addr, 1, fAccess);
682 if (rc != VINF_SUCCESS)
683 break;
684 if (PAGE_ADDRESS(Addr) == PAGE_ADDRESS(Addr + cbSize - 1))
685 break;
686 }
687 }
688 return rc;
689}
690
691
692/**
693 * Emulation of the invlpg instruction (HC only actually).
694 *
695 * @returns VBox status code, special care required.
696 * @retval VINF_PGM_SYNC_CR3 - handled.
697 * @retval VINF_EM_RAW_EMULATE_INSTR - not handled (RC only).
698 * @retval VERR_REM_FLUSHED_PAGES_OVERFLOW - not handled.
699 *
700 * @param pVCpu VMCPU handle.
701 * @param GCPtrPage Page to invalidate.
702 *
703 * @remark ASSUMES the page table entry or page directory is valid. Fairly
704 * safe, but there could be edge cases!
705 *
706 * @todo Flush page or page directory only if necessary!
707 */
708VMMDECL(int) PGMInvalidatePage(PVMCPU pVCpu, RTGCPTR GCPtrPage)
709{
710 PVM pVM = pVCpu->CTX_SUFF(pVM);
711 int rc;
712 Log3(("PGMInvalidatePage: GCPtrPage=%RGv\n", GCPtrPage));
713
714#ifndef IN_RING3
715 /*
716 * Notify the recompiler so it can record this instruction.
717 */
718 REMNotifyInvalidatePage(pVM, GCPtrPage);
719#endif /* !IN_RING3 */
720
721
722#ifdef IN_RC
723 /*
724 * Check for conflicts and pending CR3 monitoring updates.
725 */
726 if (pgmMapAreMappingsFloating(&pVM->pgm.s))
727 {
728 if ( pgmGetMapping(pVM, GCPtrPage)
729 && PGMGstGetPage(pVCpu, GCPtrPage, NULL, NULL) != VERR_PAGE_TABLE_NOT_PRESENT)
730 {
731 LogFlow(("PGMGCInvalidatePage: Conflict!\n"));
732 VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
733 STAM_COUNTER_INC(&pVM->pgm.s.StatRCInvlPgConflict);
734 return VINF_PGM_SYNC_CR3;
735 }
736
737 if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3)
738 {
739 LogFlow(("PGMGCInvalidatePage: PGM_SYNC_MONITOR_CR3 -> reinterpret instruction in R3\n"));
740 STAM_COUNTER_INC(&pVM->pgm.s.StatRCInvlPgSyncMonCR3);
741 return VINF_EM_RAW_EMULATE_INSTR;
742 }
743 }
744#endif /* IN_RC */
745
746 /*
747 * Call paging mode specific worker.
748 */
749 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,InvalidatePage), a);
750 pgmLock(pVM);
751 rc = PGM_BTH_PFN(InvalidatePage, pVCpu)(pVCpu, GCPtrPage);
752 pgmUnlock(pVM);
753 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,InvalidatePage), a);
754
755 /* Invalidate the TLB entry; might already be done by InvalidatePage (@todo) */
756 PGM_INVL_PG(pVCpu, GCPtrPage);
757
758#ifdef IN_RING3
759 /*
760 * Check if we have a pending update of the CR3 monitoring.
761 */
762 if ( RT_SUCCESS(rc)
763 && (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3))
764 {
765 pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_MONITOR_CR3;
766 Assert(!pVM->pgm.s.fMappingsFixed); Assert(!pVM->pgm.s.fMappingsDisabled);
767 }
768
769 /*
770 * Inform CSAM about the flush
771 *
772 * Note: This is to check if monitored pages have been changed; when we implement
773 * callbacks for virtual handlers, this is no longer required.
774 */
775 CSAMR3FlushPage(pVM, GCPtrPage);
776#endif /* IN_RING3 */
777
778 /* Ignore all irrelevant error codes. */
779 if ( rc == VERR_PAGE_NOT_PRESENT
780 || rc == VERR_PAGE_TABLE_NOT_PRESENT
781 || rc == VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT
782 || rc == VERR_PAGE_MAP_LEVEL4_NOT_PRESENT)
783 rc = VINF_SUCCESS;
784
785 return rc;
786}
787
788
789/**
790 * Executes an instruction using the interpreter.
791 *
792 * @returns VBox status code (appropriate for trap handling and GC return).
793 * @param pVM VM handle.
794 * @param pVCpu VMCPU handle.
795 * @param pRegFrame Register frame.
796 * @param pvFault Fault address.
797 */
798VMMDECL(int) PGMInterpretInstruction(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault)
799{
800 uint32_t cb;
801 int rc = EMInterpretInstruction(pVM, pVCpu, pRegFrame, pvFault, &cb);
802 if (rc == VERR_EM_INTERPRETER)
803 rc = VINF_EM_RAW_EMULATE_INSTR;
804 if (rc != VINF_SUCCESS)
805 Log(("PGMInterpretInstruction: returns %Rrc (pvFault=%RGv)\n", rc, pvFault));
806 return rc;
807}
808
809
810/**
811 * Gets effective page information (from the VMM page directory).
812 *
813 * @returns VBox status.
814 * @param pVCpu VMCPU handle.
815 * @param GCPtr Guest Context virtual address of the page.
816 * @param pfFlags Where to store the flags. These are X86_PTE_*.
817 * @param pHCPhys Where to store the HC physical address of the page.
818 * This is page aligned.
819 * @remark You should use PGMMapGetPage() for pages in a mapping.
820 */
821VMMDECL(int) PGMShwGetPage(PVMCPU pVCpu, RTGCPTR GCPtr, uint64_t *pfFlags, PRTHCPHYS pHCPhys)
822{
823 pgmLock(pVCpu->CTX_SUFF(pVM));
824 int rc = PGM_SHW_PFN(GetPage, pVCpu)(pVCpu, GCPtr, pfFlags, pHCPhys);
825 pgmUnlock(pVCpu->CTX_SUFF(pVM));
826 return rc;
827}
828
829
830/**
831 * Sets (replaces) the page flags for a range of pages in the shadow context.
832 *
833 * @returns VBox status.
834 * @param pVCpu VMCPU handle.
835 * @param GCPtr The address of the first page.
836 * @param cb The size of the range in bytes.
837 * @param fFlags Page flags X86_PTE_*, excluding the page mask of course.
838 * @remark You must use PGMMapSetPage() for pages in a mapping.
839 */
840VMMDECL(int) PGMShwSetPage(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags)
841{
842 return PGMShwModifyPage(pVCpu, GCPtr, cb, fFlags, 0);
843}
844
845
846/**
847 * Modify page flags for a range of pages in the shadow context.
848 *
849 * The existing flags are ANDed with the fMask and ORed with the fFlags.
850 *
851 * @returns VBox status code.
852 * @param pVCpu VMCPU handle.
853 * @param GCPtr Virtual address of the first page in the range.
854 * @param cb Size (in bytes) of the range to apply the modification to.
855 * @param fFlags The OR mask - page flags X86_PTE_*, excluding the page mask of course.
856 * @param fMask The AND mask - page flags X86_PTE_*.
857 * Be very CAREFUL when ~'ing constants which could be 32-bit!
858 * @remark You must use PGMMapModifyPage() for pages in a mapping.
859 */
860VMMDECL(int) PGMShwModifyPage(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask)
861{
862 AssertMsg(!(fFlags & X86_PTE_PAE_PG_MASK), ("fFlags=%#llx\n", fFlags));
863 Assert(cb);
864
865 /*
866 * Align the input.
867 */
868 cb += GCPtr & PAGE_OFFSET_MASK;
869 cb = RT_ALIGN_Z(cb, PAGE_SIZE);
870 GCPtr = (GCPtr & PAGE_BASE_GC_MASK); /** @todo this ain't necessary, right... */
871
872 /*
873 * Call worker.
874 */
875 PVM pVM = pVCpu->CTX_SUFF(pVM);
876 pgmLock(pVM);
877 int rc = PGM_SHW_PFN(ModifyPage, pVCpu)(pVCpu, GCPtr, cb, fFlags, fMask);
878 pgmUnlock(pVM);
879 return rc;
880}
881
882/**
883 * Gets the shadow page directory for the specified address, PAE.
884 *
885 * @returns Pointer to the shadow PD.
886 * @param pVCpu The VMCPU handle.
887 * @param GCPtr The address.
888 * @param pGstPdpe Guest PDPT entry
889 * @param ppPD Receives address of page directory
890 */
891int pgmShwSyncPaePDPtr(PVMCPU pVCpu, RTGCPTR GCPtr, PX86PDPE pGstPdpe, PX86PDPAE *ppPD)
892{
893 const unsigned iPdPt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE;
894 PX86PDPT pPdpt = pgmShwGetPaePDPTPtr(&pVCpu->pgm.s);
895 PX86PDPE pPdpe = &pPdpt->a[iPdPt];
896 PVM pVM = pVCpu->CTX_SUFF(pVM);
897 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
898 PPGMPOOLPAGE pShwPage;
899 int rc;
900
901 Assert(PGMIsLockOwner(pVM));
902
903 /* Allocate page directory if not present. */
904 if ( !pPdpe->n.u1Present
905 && !(pPdpe->u & X86_PDPE_PG_MASK))
906 {
907 RTGCPTR64 GCPdPt;
908 PGMPOOLKIND enmKind;
909
910# if defined(IN_RC)
911 /* Make sure the dynamic pPdeDst mapping will not be reused during this function. */
912 PGMDynLockHCPage(pVM, (uint8_t *)pPdpe);
913# endif
914
915 if (HWACCMIsNestedPagingActive(pVM) || !CPUMIsGuestPagingEnabled(pVCpu))
916 {
917 /* AMD-V nested paging or real/protected mode without paging */
918 GCPdPt = (RTGCPTR64)iPdPt << X86_PDPT_SHIFT;
919 enmKind = PGMPOOLKIND_PAE_PD_PHYS;
920 }
921 else
922 {
923 Assert(pGstPdpe);
924
925 if (CPUMGetGuestCR4(pVCpu) & X86_CR4_PAE)
926 {
927 if (!pGstPdpe->n.u1Present)
928 {
929 /* PD not present; guest must reload CR3 to change it.
930 * No need to monitor anything in this case.
931 */
932 Assert(!HWACCMIsEnabled(pVM));
933
934 GCPdPt = pGstPdpe->u & X86_PDPE_PG_MASK;
935 enmKind = PGMPOOLKIND_PAE_PD_PHYS;
936 pGstPdpe->n.u1Present = 1;
937 }
938 else
939 {
940 GCPdPt = pGstPdpe->u & X86_PDPE_PG_MASK;
941 enmKind = PGMPOOLKIND_PAE_PD_FOR_PAE_PD;
942 }
943 }
944 else
945 {
946 GCPdPt = CPUMGetGuestCR3(pVCpu);
947 enmKind = (PGMPOOLKIND)(PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD + iPdPt);
948 }
949 }
950
951 /* Create a reference back to the PDPT by using the index in its shadow page. */
952 rc = pgmPoolAlloc(pVM, GCPdPt, enmKind, pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)->idx, iPdPt, &pShwPage);
953 AssertRCReturn(rc, rc);
954
955 /* The PD was cached or created; hook it up now. */
956 pPdpe->u |= pShwPage->Core.Key
957 | (pGstPdpe->u & ~(X86_PDPE_PG_MASK | X86_PDPE_AVL_MASK | X86_PDPE_PCD | X86_PDPE_PWT));
958
959# if defined(IN_RC)
960 /* In 32 bits PAE mode we *must* invalidate the TLB when changing a PDPT entry; the CPU fetches them only during cr3 load, so any
961 * non-present PDPT will continue to cause page faults.
962 */
963 ASMReloadCR3();
964 PGMDynUnlockHCPage(pVM, (uint8_t *)pPdpe);
965# endif
966 }
967 else
968 {
969 pShwPage = pgmPoolGetPage(pPool, pPdpe->u & X86_PDPE_PG_MASK);
970 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
971 Assert((pPdpe->u & X86_PDPE_PG_MASK) == pShwPage->Core.Key);
972
973 pgmPoolCacheUsed(pPool, pShwPage);
974 }
975 *ppPD = (PX86PDPAE)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
976 return VINF_SUCCESS;
977}
978
979
980/**
981 * Gets the pointer to the shadow page directory entry for an address, PAE.
982 *
983 * @returns Pointer to the PDE.
984 * @param pPGM Pointer to the PGMCPU instance data.
985 * @param GCPtr The address.
986 * @param ppShwPde Receives the address of the pgm pool page for the shadow page directory
987 */
988DECLINLINE(int) pgmShwGetPaePoolPagePD(PPGMCPU pPGM, RTGCPTR GCPtr, PPGMPOOLPAGE *ppShwPde)
989{
990 const unsigned iPdPt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE;
991 PX86PDPT pPdpt = pgmShwGetPaePDPTPtr(pPGM);
992
993 Assert(PGMIsLockOwner(PGMCPU2VM(pPGM)));
994
995 AssertReturn(pPdpt, VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT); /* can't happen */
996 if (!pPdpt->a[iPdPt].n.u1Present)
997 {
998 LogFlow(("pgmShwGetPaePoolPagePD: PD %d not present (%RX64)\n", iPdPt, pPdpt->a[iPdPt].u));
999 return VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT;
1000 }
1001 AssertMsg(pPdpt->a[iPdPt].u & X86_PDPE_PG_MASK, ("GCPtr=%RGv\n", GCPtr));
1002
1003 /* Fetch the pgm pool shadow descriptor. */
1004 PPGMPOOLPAGE pShwPde = pgmPoolGetPage(PGMCPU2PGM(pPGM)->CTX_SUFF(pPool), pPdpt->a[iPdPt].u & X86_PDPE_PG_MASK);
1005 AssertReturn(pShwPde, VERR_INTERNAL_ERROR);
1006
1007 *ppShwPde = pShwPde;
1008 return VINF_SUCCESS;
1009}
1010
1011#ifndef IN_RC
1012
1013/**
1014 * Syncs the SHADOW page directory pointer for the specified address.
1015 *
1016 * Allocates backing pages in case the PDPT or PML4 entry is missing.
1017 *
1018 * The caller is responsible for making sure the guest has a valid PD before
1019 * calling this function.
1020 *
1021 * @returns VBox status.
1022 * @param pVCpu VMCPU handle.
1023 * @param GCPtr The address.
1024 * @param pGstPml4e Guest PML4 entry
1025 * @param pGstPdpe Guest PDPT entry
1026 * @param ppPD Receives address of page directory
1027 */
1028int pgmShwSyncLongModePDPtr(PVMCPU pVCpu, RTGCPTR64 GCPtr, PX86PML4E pGstPml4e, PX86PDPE pGstPdpe, PX86PDPAE *ppPD)
1029{
1030 PPGMCPU pPGM = &pVCpu->pgm.s;
1031 PVM pVM = pVCpu->CTX_SUFF(pVM);
1032 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
1033 const unsigned iPml4 = (GCPtr >> X86_PML4_SHIFT) & X86_PML4_MASK;
1034 PX86PML4E pPml4e = pgmShwGetLongModePML4EPtr(pPGM, iPml4);
1035 bool fNestedPagingOrNoGstPaging = HWACCMIsNestedPagingActive(pVM) || !CPUMIsGuestPagingEnabled(pVCpu);
1036 PPGMPOOLPAGE pShwPage;
1037 int rc;
1038
1039 Assert(PGMIsLockOwner(pVM));
1040
1041 /* Allocate page directory pointer table if not present. */
1042 if ( !pPml4e->n.u1Present
1043 && !(pPml4e->u & X86_PML4E_PG_MASK))
1044 {
1045 RTGCPTR64 GCPml4;
1046 PGMPOOLKIND enmKind;
1047
1048 Assert(pVCpu->pgm.s.CTX_SUFF(pShwPageCR3));
1049
1050 if (fNestedPagingOrNoGstPaging)
1051 {
1052 /* AMD-V nested paging or real/protected mode without paging */
1053 GCPml4 = (RTGCPTR64)iPml4 << X86_PML4_SHIFT;
1054 enmKind = PGMPOOLKIND_64BIT_PDPT_FOR_PHYS;
1055 }
1056 else
1057 {
1058 Assert(pGstPml4e && pGstPdpe);
1059
1060 GCPml4 = pGstPml4e->u & X86_PML4E_PG_MASK;
1061 enmKind = PGMPOOLKIND_64BIT_PDPT_FOR_64BIT_PDPT;
1062 }
1063
1064 /* Create a reference back to the PDPT by using the index in its shadow page. */
1065 rc = pgmPoolAlloc(pVM, GCPml4, enmKind, pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)->idx, iPml4, &pShwPage);
1066 AssertRCReturn(rc, rc);
1067 }
1068 else
1069 {
1070 pShwPage = pgmPoolGetPage(pPool, pPml4e->u & X86_PML4E_PG_MASK);
1071 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1072
1073 pgmPoolCacheUsed(pPool, pShwPage);
1074 }
1075 /* The PDPT was cached or created; hook it up now. */
1076 pPml4e->u |= pShwPage->Core.Key
1077 | (pGstPml4e->u & ~(X86_PML4E_PG_MASK | X86_PML4E_AVL_MASK | X86_PML4E_PCD | X86_PML4E_PWT));
1078
1079 const unsigned iPdPt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_AMD64;
1080 PX86PDPT pPdpt = (PX86PDPT)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1081 PX86PDPE pPdpe = &pPdpt->a[iPdPt];
1082
1083 /* Allocate page directory if not present. */
1084 if ( !pPdpe->n.u1Present
1085 && !(pPdpe->u & X86_PDPE_PG_MASK))
1086 {
1087 RTGCPTR64 GCPdPt;
1088 PGMPOOLKIND enmKind;
1089
1090 if (fNestedPagingOrNoGstPaging)
1091 {
1092 /* AMD-V nested paging or real/protected mode without paging */
1093 GCPdPt = (RTGCPTR64)iPdPt << X86_PDPT_SHIFT;
1094 enmKind = PGMPOOLKIND_64BIT_PD_FOR_PHYS;
1095 }
1096 else
1097 {
1098 Assert(pGstPdpe);
1099
1100 GCPdPt = pGstPdpe->u & X86_PDPE_PG_MASK;
1101 enmKind = PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD;
1102 }
1103
1104 /* Create a reference back to the PDPT by using the index in its shadow page. */
1105 rc = pgmPoolAlloc(pVM, GCPdPt, enmKind, pShwPage->idx, iPdPt, &pShwPage);
1106 AssertRCReturn(rc, rc);
1107 }
1108 else
1109 {
1110 pShwPage = pgmPoolGetPage(pPool, pPdpe->u & X86_PDPE_PG_MASK);
1111 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1112
1113 pgmPoolCacheUsed(pPool, pShwPage);
1114 }
1115 /* The PD was cached or created; hook it up now. */
1116 pPdpe->u |= pShwPage->Core.Key
1117 | (pGstPdpe->u & ~(X86_PDPE_PG_MASK | X86_PDPE_AVL_MASK | X86_PDPE_PCD | X86_PDPE_PWT));
1118
1119 *ppPD = (PX86PDPAE)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1120 return VINF_SUCCESS;
1121}
1122
1123
1124/**
1125 * Gets the SHADOW page directory pointer for the specified address (long mode).
1126 *
1127 * @returns VBox status.
1128 * @param pVCpu VMCPU handle.
1129 * @param GCPtr The address.
1130 * @param ppPdpt Receives address of pdpt
1131 * @param ppPD Receives address of page directory
1132 */
1133DECLINLINE(int) pgmShwGetLongModePDPtr(PVMCPU pVCpu, RTGCPTR64 GCPtr, PX86PML4E *ppPml4e, PX86PDPT *ppPdpt, PX86PDPAE *ppPD)
1134{
1135 PPGMCPU pPGM = &pVCpu->pgm.s;
1136 const unsigned iPml4 = (GCPtr >> X86_PML4_SHIFT) & X86_PML4_MASK;
1137 PCX86PML4E pPml4e = pgmShwGetLongModePML4EPtr(pPGM, iPml4);
1138
1139 Assert(PGMIsLockOwner(PGMCPU2VM(pPGM)));
1140
1141 AssertReturn(pPml4e, VERR_INTERNAL_ERROR);
1142 if (ppPml4e)
1143 *ppPml4e = (PX86PML4E)pPml4e;
1144
1145 Log4(("pgmShwGetLongModePDPtr %RGv (%RHv) %RX64\n", GCPtr, pPml4e, pPml4e->u));
1146
1147 if (!pPml4e->n.u1Present)
1148 return VERR_PAGE_MAP_LEVEL4_NOT_PRESENT;
1149
1150 PVM pVM = pVCpu->CTX_SUFF(pVM);
1151 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
1152 PPGMPOOLPAGE pShwPage = pgmPoolGetPage(pPool, pPml4e->u & X86_PML4E_PG_MASK);
1153 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1154
1155 const unsigned iPdPt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_AMD64;
1156 PCX86PDPT pPdpt = *ppPdpt = (PX86PDPT)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1157 if (!pPdpt->a[iPdPt].n.u1Present)
1158 return VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT;
1159
1160 pShwPage = pgmPoolGetPage(pPool, pPdpt->a[iPdPt].u & X86_PDPE_PG_MASK);
1161 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1162
1163 *ppPD = (PX86PDPAE)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1164 return VINF_SUCCESS;
1165}
1166
1167
1168/**
1169 * Syncs the SHADOW EPT page directory pointer for the specified address. Allocates
1170 * backing pages in case the PDPT or PML4 entry is missing.
1171 *
1172 * @returns VBox status.
1173 * @param pVCpu VMCPU handle.
1174 * @param GCPtr The address.
1175 * @param ppPdpt Receives address of pdpt
1176 * @param ppPD Receives address of page directory
1177 */
1178int pgmShwGetEPTPDPtr(PVMCPU pVCpu, RTGCPTR64 GCPtr, PEPTPDPT *ppPdpt, PEPTPD *ppPD)
1179{
1180 PPGMCPU pPGM = &pVCpu->pgm.s;
1181 PVM pVM = pVCpu->CTX_SUFF(pVM);
1182 const unsigned iPml4 = (GCPtr >> EPT_PML4_SHIFT) & EPT_PML4_MASK;
1183 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
1184 PEPTPML4 pPml4;
1185 PEPTPML4E pPml4e;
1186 PPGMPOOLPAGE pShwPage;
1187 int rc;
1188
1189 Assert(HWACCMIsNestedPagingActive(pVM));
1190 Assert(PGMIsLockOwner(pVM));
1191
1192 pPml4 = (PEPTPML4)PGMPOOL_PAGE_2_PTR_BY_PGMCPU(pPGM, pPGM->CTX_SUFF(pShwPageCR3));
1193 Assert(pPml4);
1194
1195 /* Allocate page directory pointer table if not present. */
1196 pPml4e = &pPml4->a[iPml4];
1197 if ( !pPml4e->n.u1Present
1198 && !(pPml4e->u & EPT_PML4E_PG_MASK))
1199 {
1200 Assert(!(pPml4e->u & EPT_PML4E_PG_MASK));
1201 RTGCPTR64 GCPml4 = (RTGCPTR64)iPml4 << EPT_PML4_SHIFT;
1202
1203 rc = pgmPoolAlloc(pVM, GCPml4, PGMPOOLKIND_EPT_PDPT_FOR_PHYS, PGMPOOL_IDX_NESTED_ROOT, iPml4, &pShwPage);
1204 AssertRCReturn(rc, rc);
1205 }
1206 else
1207 {
1208 pShwPage = pgmPoolGetPage(pPool, pPml4e->u & EPT_PML4E_PG_MASK);
1209 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1210
1211 pgmPoolCacheUsed(pPool, pShwPage);
1212 }
1213 /* The PDPT was cached or created; hook it up now and fill with the default value. */
1214 pPml4e->u = pShwPage->Core.Key;
1215 pPml4e->n.u1Present = 1;
1216 pPml4e->n.u1Write = 1;
1217 pPml4e->n.u1Execute = 1;
1218
1219 const unsigned iPdPt = (GCPtr >> EPT_PDPT_SHIFT) & EPT_PDPT_MASK;
1220 PEPTPDPT pPdpt = (PEPTPDPT)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1221 PEPTPDPTE pPdpe = &pPdpt->a[iPdPt];
1222
1223 if (ppPdpt)
1224 *ppPdpt = pPdpt;
1225
1226 /* Allocate page directory if not present. */
1227 if ( !pPdpe->n.u1Present
1228 && !(pPdpe->u & EPT_PDPTE_PG_MASK))
1229 {
1230 RTGCPTR64 GCPdPt = (RTGCPTR64)iPdPt << EPT_PDPT_SHIFT;
1231
1232 rc = pgmPoolAlloc(pVM, GCPdPt, PGMPOOLKIND_64BIT_PD_FOR_PHYS, pShwPage->idx, iPdPt, &pShwPage);
1233 AssertRCReturn(rc, rc);
1234 }
1235 else
1236 {
1237 pShwPage = pgmPoolGetPage(pPool, pPdpe->u & EPT_PDPTE_PG_MASK);
1238 AssertReturn(pShwPage, VERR_INTERNAL_ERROR);
1239
1240 pgmPoolCacheUsed(pPool, pShwPage);
1241 }
1242 /* The PD was cached or created; hook it up now and fill with the default value. */
1243 pPdpe->u = pShwPage->Core.Key;
1244 pPdpe->n.u1Present = 1;
1245 pPdpe->n.u1Write = 1;
1246 pPdpe->n.u1Execute = 1;
1247
1248 *ppPD = (PEPTPD)PGMPOOL_PAGE_2_PTR(pVM, pShwPage);
1249 return VINF_SUCCESS;
1250}
1251
1252#endif /* IN_RC */
1253
1254/**
1255 * Gets effective Guest OS page information.
1256 *
1257 * When GCPtr is in a big page, the function will return as if it was a normal
1258 * 4KB page. If the need for distinguishing between big and normal page becomes
1259 * necessary at a later point, a PGMGstGetPage() will be created for that
1260 * purpose.
1261 *
1262 * @returns VBox status.
1263 * @param pVCpu VMCPU handle.
1264 * @param GCPtr Guest Context virtual address of the page.
1265 * @param pfFlags Where to store the flags. These are X86_PTE_*, even for big pages.
1266 * @param pGCPhys Where to store the GC physical address of the page.
1267 * This is page aligned. The fact that the
1268 */
1269VMMDECL(int) PGMGstGetPage(PVMCPU pVCpu, RTGCPTR GCPtr, uint64_t *pfFlags, PRTGCPHYS pGCPhys)
1270{
1271 return PGM_GST_PFN(GetPage, pVCpu)(pVCpu, GCPtr, pfFlags, pGCPhys);
1272}
1273
1274
1275/**
1276 * Checks if the page is present.
1277 *
1278 * @returns true if the page is present.
1279 * @returns false if the page is not present.
1280 * @param pVCpu VMCPU handle.
1281 * @param GCPtr Address within the page.
1282 */
1283VMMDECL(bool) PGMGstIsPagePresent(PVMCPU pVCpu, RTGCPTR GCPtr)
1284{
1285 int rc = PGMGstGetPage(pVCpu, GCPtr, NULL, NULL);
1286 return RT_SUCCESS(rc);
1287}
1288
1289
1290/**
1291 * Sets (replaces) the page flags for a range of pages in the guest's tables.
1292 *
1293 * @returns VBox status.
1294 * @param pVCpu VMCPU handle.
1295 * @param GCPtr The address of the first page.
1296 * @param cb The size of the range in bytes.
1297 * @param fFlags Page flags X86_PTE_*, excluding the page mask of course.
1298 */
1299VMMDECL(int) PGMGstSetPage(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags)
1300{
1301 return PGMGstModifyPage(pVCpu, GCPtr, cb, fFlags, 0);
1302}
1303
1304
1305/**
1306 * Modify page flags for a range of pages in the guest's tables
1307 *
1308 * The existing flags are ANDed with the fMask and ORed with the fFlags.
1309 *
1310 * @returns VBox status code.
1311 * @param pVCpu VMCPU handle.
1312 * @param GCPtr Virtual address of the first page in the range.
1313 * @param cb Size (in bytes) of the range to apply the modification to.
1314 * @param fFlags The OR mask - page flags X86_PTE_*, excluding the page mask of course.
1315 * @param fMask The AND mask - page flags X86_PTE_*, excluding the page mask of course.
1316 * Be very CAREFUL when ~'ing constants which could be 32-bit!
1317 */
1318VMMDECL(int) PGMGstModifyPage(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask)
1319{
1320 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,GstModifyPage), a);
1321
1322 /*
1323 * Validate input.
1324 */
1325 AssertMsg(!(fFlags & X86_PTE_PAE_PG_MASK), ("fFlags=%#llx\n", fFlags));
1326 Assert(cb);
1327
1328 LogFlow(("PGMGstModifyPage %RGv %d bytes fFlags=%08llx fMask=%08llx\n", GCPtr, cb, fFlags, fMask));
1329
1330 /*
1331 * Adjust input.
1332 */
1333 cb += GCPtr & PAGE_OFFSET_MASK;
1334 cb = RT_ALIGN_Z(cb, PAGE_SIZE);
1335 GCPtr = (GCPtr & PAGE_BASE_GC_MASK);
1336
1337 /*
1338 * Call worker.
1339 */
1340 int rc = PGM_GST_PFN(ModifyPage, pVCpu)(pVCpu, GCPtr, cb, fFlags, fMask);
1341
1342 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,GstModifyPage), a);
1343 return rc;
1344}
1345
1346#ifdef IN_RING3
1347
1348/**
1349 * Performs the lazy mapping of the 32-bit guest PD.
1350 *
1351 * @returns Pointer to the mapping.
1352 * @param pPGM The PGM instance data.
1353 */
1354PX86PD pgmGstLazyMap32BitPD(PPGMCPU pPGM)
1355{
1356 Assert(!pPGM->CTX_SUFF(pGst32BitPd));
1357 PVM pVM = PGMCPU2VM(pPGM);
1358 pgmLock(pVM);
1359
1360 PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, pPGM->GCPhysCR3);
1361 AssertReturn(pPage, NULL);
1362
1363 RTHCPTR HCPtrGuestCR3;
1364 int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, pPGM->GCPhysCR3 & X86_CR3_PAGE_MASK, (void **)&HCPtrGuestCR3);
1365 AssertRCReturn(rc, NULL);
1366
1367 pPGM->pGst32BitPdR3 = (R3PTRTYPE(PX86PD))HCPtrGuestCR3;
1368# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1369 pPGM->pGst32BitPdR0 = (R0PTRTYPE(PX86PD))HCPtrGuestCR3;
1370# endif
1371
1372 pgmUnlock(pVM);
1373 return pPGM->CTX_SUFF(pGst32BitPd);
1374}
1375
1376
1377/**
1378 * Performs the lazy mapping of the PAE guest PDPT.
1379 *
1380 * @returns Pointer to the mapping.
1381 * @param pPGM The PGM instance data.
1382 */
1383PX86PDPT pgmGstLazyMapPaePDPT(PPGMCPU pPGM)
1384{
1385 Assert(!pPGM->CTX_SUFF(pGstPaePdpt));
1386 PVM pVM = PGMCPU2VM(pPGM);
1387 pgmLock(pVM);
1388
1389 PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, pPGM->GCPhysCR3);
1390 AssertReturn(pPage, NULL);
1391
1392 RTHCPTR HCPtrGuestCR3;
1393 int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, pPGM->GCPhysCR3 & X86_CR3_PAE_PAGE_MASK, (void **)&HCPtrGuestCR3); /** @todo r=bird: This GCPhysR3 masking isn't necessary. */
1394 AssertRCReturn(rc, NULL);
1395
1396 pPGM->pGstPaePdptR3 = (R3PTRTYPE(PX86PDPT))HCPtrGuestCR3;
1397# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1398 pPGM->pGstPaePdptR0 = (R0PTRTYPE(PX86PDPT))HCPtrGuestCR3;
1399# endif
1400
1401 pgmUnlock(pVM);
1402 return pPGM->CTX_SUFF(pGstPaePdpt);
1403}
1404
1405#endif /* IN_RING3 */
1406
1407#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1408/**
1409 * Performs the lazy mapping / updating of a PAE guest PD.
1410 *
1411 * @returns Pointer to the mapping.
1412 * @param pPGM The PGM instance data.
1413 * @param iPdpt Which PD entry to map (0..3).
1414 */
1415PX86PDPAE pgmGstLazyMapPaePD(PPGMCPU pPGM, uint32_t iPdpt)
1416{
1417 PVM pVM = PGMCPU2VM(pPGM);
1418 pgmLock(pVM);
1419
1420 PX86PDPT pGuestPDPT = pPGM->CTX_SUFF(pGstPaePdpt);
1421 Assert(pGuestPDPT);
1422 Assert(pGuestPDPT->a[iPdpt].n.u1Present);
1423 RTGCPHYS GCPhys = pGuestPDPT->a[iPdpt].u & X86_PDPE_PG_MASK;
1424 bool const fChanged = pPGM->aGCPhysGstPaePDs[iPdpt] != GCPhys;
1425
1426 PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, GCPhys);
1427 if (RT_LIKELY(pPage))
1428 {
1429 int rc = VINF_SUCCESS;
1430 RTRCPTR RCPtr = NIL_RTRCPTR;
1431 RTHCPTR HCPtr = NIL_RTHCPTR;
1432#if !defined(IN_RC) && !defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
1433 rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &HCPtr);
1434 AssertRC(rc);
1435#endif
1436 if (RT_SUCCESS(rc) && fChanged)
1437 {
1438 RCPtr = (RTRCPTR)(RTRCUINTPTR)(pVM->pgm.s.GCPtrCR3Mapping + (1 + iPdpt) * PAGE_SIZE);
1439 rc = PGMMap(pVM, (RTRCUINTPTR)RCPtr, PGM_PAGE_GET_HCPHYS(pPage), PAGE_SIZE, 0);
1440 }
1441 if (RT_SUCCESS(rc))
1442 {
1443 pPGM->apGstPaePDsR3[iPdpt] = (R3PTRTYPE(PX86PDPAE))HCPtr;
1444# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1445 pPGM->apGstPaePDsR0[iPdpt] = (R0PTRTYPE(PX86PDPAE))HCPtr;
1446# endif
1447 if (fChanged)
1448 {
1449 pPGM->aGCPhysGstPaePDs[iPdpt] = GCPhys;
1450 pPGM->apGstPaePDsRC[iPdpt] = (RCPTRTYPE(PX86PDPAE))RCPtr;
1451 }
1452
1453 pgmUnlock(pVM);
1454 return pPGM->CTX_SUFF(apGstPaePDs)[iPdpt];
1455 }
1456 }
1457
1458 /* Invalid page or some failure, invalidate the entry. */
1459 pPGM->aGCPhysGstPaePDs[iPdpt] = NIL_RTGCPHYS;
1460 pPGM->apGstPaePDsR3[iPdpt] = 0;
1461# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1462 pPGM->apGstPaePDsR0[iPdpt] = 0;
1463# endif
1464 pPGM->apGstPaePDsRC[iPdpt] = 0;
1465
1466 pgmUnlock(pVM);
1467 return NULL;
1468}
1469#endif /* !VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 */
1470
1471
1472#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R3
1473/**
1474 * Performs the lazy mapping of the 32-bit guest PD.
1475 *
1476 * @returns Pointer to the mapping.
1477 * @param pPGM The PGM instance data.
1478 */
1479PX86PML4 pgmGstLazyMapPml4(PPGMCPU pPGM)
1480{
1481 Assert(!pPGM->CTX_SUFF(pGstAmd64Pml4));
1482 PVM pVM = PGMCPU2VM(pPGM);
1483 pgmLock(pVM);
1484
1485 PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, pPGM->GCPhysCR3);
1486 AssertReturn(pPage, NULL);
1487
1488 RTHCPTR HCPtrGuestCR3;
1489 int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, pPGM->GCPhysCR3 & X86_CR3_AMD64_PAGE_MASK, (void **)&HCPtrGuestCR3); /** @todo r=bird: This GCPhysCR3 masking isn't necessary. */
1490 AssertRCReturn(rc, NULL);
1491
1492 pPGM->pGstAmd64Pml4R3 = (R3PTRTYPE(PX86PML4))HCPtrGuestCR3;
1493# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
1494 pPGM->pGstAmd64Pml4R0 = (R0PTRTYPE(PX86PML4))HCPtrGuestCR3;
1495# endif
1496
1497 pgmUnlock(pVM);
1498 return pPGM->CTX_SUFF(pGstAmd64Pml4);
1499}
1500#endif /* VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R3 */
1501
1502
1503/**
1504 * Gets the specified page directory pointer table entry.
1505 *
1506 * @returns PDP entry
1507 * @param pVCpu VMCPU handle.
1508 * @param iPdpt PDPT index
1509 */
1510VMMDECL(X86PDPE) PGMGstGetPaePDPtr(PVMCPU pVCpu, unsigned iPdpt)
1511{
1512 Assert(iPdpt <= 3);
1513 return pgmGstGetPaePDPTPtr(&pVCpu->pgm.s)->a[iPdpt & 3];
1514}
1515
1516
1517/**
1518 * Gets the current CR3 register value for the shadow memory context.
1519 * @returns CR3 value.
1520 * @param pVCpu VMCPU handle.
1521 */
1522VMMDECL(RTHCPHYS) PGMGetHyperCR3(PVMCPU pVCpu)
1523{
1524 PPGMPOOLPAGE pPoolPage = pVCpu->pgm.s.CTX_SUFF(pShwPageCR3);
1525 AssertPtrReturn(pPoolPage, 0);
1526 return pPoolPage->Core.Key;
1527}
1528
1529
1530/**
1531 * Gets the current CR3 register value for the nested memory context.
1532 * @returns CR3 value.
1533 * @param pVCpu VMCPU handle.
1534 */
1535VMMDECL(RTHCPHYS) PGMGetNestedCR3(PVMCPU pVCpu, PGMMODE enmShadowMode)
1536{
1537 Assert(pVCpu->pgm.s.CTX_SUFF(pShwPageCR3));
1538 return pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)->Core.Key;
1539}
1540
1541
1542/**
1543 * Gets the current CR3 register value for the HC intermediate memory context.
1544 * @returns CR3 value.
1545 * @param pVM The VM handle.
1546 */
1547VMMDECL(RTHCPHYS) PGMGetInterHCCR3(PVM pVM)
1548{
1549 switch (pVM->pgm.s.enmHostMode)
1550 {
1551 case SUPPAGINGMODE_32_BIT:
1552 case SUPPAGINGMODE_32_BIT_GLOBAL:
1553 return pVM->pgm.s.HCPhysInterPD;
1554
1555 case SUPPAGINGMODE_PAE:
1556 case SUPPAGINGMODE_PAE_GLOBAL:
1557 case SUPPAGINGMODE_PAE_NX:
1558 case SUPPAGINGMODE_PAE_GLOBAL_NX:
1559 return pVM->pgm.s.HCPhysInterPaePDPT;
1560
1561 case SUPPAGINGMODE_AMD64:
1562 case SUPPAGINGMODE_AMD64_GLOBAL:
1563 case SUPPAGINGMODE_AMD64_NX:
1564 case SUPPAGINGMODE_AMD64_GLOBAL_NX:
1565 return pVM->pgm.s.HCPhysInterPaePDPT;
1566
1567 default:
1568 AssertMsgFailed(("enmHostMode=%d\n", pVM->pgm.s.enmHostMode));
1569 return ~0;
1570 }
1571}
1572
1573
1574/**
1575 * Gets the current CR3 register value for the RC intermediate memory context.
1576 * @returns CR3 value.
1577 * @param pVM The VM handle.
1578 * @param pVCpu VMCPU handle.
1579 */
1580VMMDECL(RTHCPHYS) PGMGetInterRCCR3(PVM pVM, PVMCPU pVCpu)
1581{
1582 switch (pVCpu->pgm.s.enmShadowMode)
1583 {
1584 case PGMMODE_32_BIT:
1585 return pVM->pgm.s.HCPhysInterPD;
1586
1587 case PGMMODE_PAE:
1588 case PGMMODE_PAE_NX:
1589 return pVM->pgm.s.HCPhysInterPaePDPT;
1590
1591 case PGMMODE_AMD64:
1592 case PGMMODE_AMD64_NX:
1593 return pVM->pgm.s.HCPhysInterPaePML4;
1594
1595 case PGMMODE_EPT:
1596 case PGMMODE_NESTED:
1597 return 0; /* not relevant */
1598
1599 default:
1600 AssertMsgFailed(("enmShadowMode=%d\n", pVCpu->pgm.s.enmShadowMode));
1601 return ~0;
1602 }
1603}
1604
1605
1606/**
1607 * Gets the CR3 register value for the 32-Bit intermediate memory context.
1608 * @returns CR3 value.
1609 * @param pVM The VM handle.
1610 */
1611VMMDECL(RTHCPHYS) PGMGetInter32BitCR3(PVM pVM)
1612{
1613 return pVM->pgm.s.HCPhysInterPD;
1614}
1615
1616
1617/**
1618 * Gets the CR3 register value for the PAE intermediate memory context.
1619 * @returns CR3 value.
1620 * @param pVM The VM handle.
1621 */
1622VMMDECL(RTHCPHYS) PGMGetInterPaeCR3(PVM pVM)
1623{
1624 return pVM->pgm.s.HCPhysInterPaePDPT;
1625}
1626
1627
1628/**
1629 * Gets the CR3 register value for the AMD64 intermediate memory context.
1630 * @returns CR3 value.
1631 * @param pVM The VM handle.
1632 */
1633VMMDECL(RTHCPHYS) PGMGetInterAmd64CR3(PVM pVM)
1634{
1635 return pVM->pgm.s.HCPhysInterPaePML4;
1636}
1637
1638
1639/**
1640 * Performs and schedules necessary updates following a CR3 load or reload.
1641 *
1642 * This will normally involve mapping the guest PD or nPDPT
1643 *
1644 * @returns VBox status code.
1645 * @retval VINF_PGM_SYNC_CR3 if monitoring requires a CR3 sync. This can
1646 * safely be ignored and overridden since the FF will be set too then.
1647 * @param pVCpu VMCPU handle.
1648 * @param cr3 The new cr3.
1649 * @param fGlobal Indicates whether this is a global flush or not.
1650 */
1651VMMDECL(int) PGMFlushTLB(PVMCPU pVCpu, uint64_t cr3, bool fGlobal)
1652{
1653 PVM pVM = pVCpu->CTX_SUFF(pVM);
1654
1655 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLB), a);
1656
1657 /*
1658 * Always flag the necessary updates; necessary for hardware acceleration
1659 */
1660 /** @todo optimize this, it shouldn't always be necessary. */
1661 VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
1662 if (fGlobal)
1663 VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1664 LogFlow(("PGMFlushTLB: cr3=%RX64 OldCr3=%RX64 fGlobal=%d\n", cr3, pVCpu->pgm.s.GCPhysCR3, fGlobal));
1665
1666 /*
1667 * Remap the CR3 content and adjust the monitoring if CR3 was actually changed.
1668 */
1669 int rc = VINF_SUCCESS;
1670 RTGCPHYS GCPhysCR3;
1671 switch (pVCpu->pgm.s.enmGuestMode)
1672 {
1673 case PGMMODE_PAE:
1674 case PGMMODE_PAE_NX:
1675 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAE_PAGE_MASK);
1676 break;
1677 case PGMMODE_AMD64:
1678 case PGMMODE_AMD64_NX:
1679 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_AMD64_PAGE_MASK);
1680 break;
1681 default:
1682 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAGE_MASK);
1683 break;
1684 }
1685
1686 if (pVCpu->pgm.s.GCPhysCR3 != GCPhysCR3)
1687 {
1688 RTGCPHYS GCPhysOldCR3 = pVCpu->pgm.s.GCPhysCR3;
1689 pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
1690 rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
1691 if (RT_LIKELY(rc == VINF_SUCCESS))
1692 {
1693 if (pgmMapAreMappingsFloating(&pVM->pgm.s))
1694 pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_MONITOR_CR3;
1695 }
1696 else
1697 {
1698 AssertMsg(rc == VINF_PGM_SYNC_CR3, ("%Rrc\n", rc));
1699 Assert(VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL | VMCPU_FF_PGM_SYNC_CR3));
1700 pVCpu->pgm.s.GCPhysCR3 = GCPhysOldCR3;
1701 pVCpu->pgm.s.fSyncFlags |= PGM_SYNC_MAP_CR3;
1702 if (pgmMapAreMappingsFloating(&pVM->pgm.s))
1703 pVCpu->pgm.s.fSyncFlags |= PGM_SYNC_MONITOR_CR3;
1704 }
1705
1706 if (fGlobal)
1707 STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLBNewCR3Global));
1708 else
1709 STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLBNewCR3));
1710 }
1711 else
1712 {
1713# ifdef PGMPOOL_WITH_OPTIMIZED_DIRTY_PT
1714 PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool);
1715 if (pPool->cDirtyPages)
1716 {
1717 pgmLock(pVM);
1718 pgmPoolResetDirtyPages(pVM);
1719 pgmUnlock(pVM);
1720 }
1721# endif
1722 /*
1723 * Check if we have a pending update of the CR3 monitoring.
1724 */
1725 if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3)
1726 {
1727 pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_MONITOR_CR3;
1728 Assert(!pVM->pgm.s.fMappingsFixed); Assert(!pVM->pgm.s.fMappingsDisabled);
1729 }
1730 if (fGlobal)
1731 STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLBSameCR3Global));
1732 else
1733 STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLBSameCR3));
1734 }
1735
1736 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,FlushTLB), a);
1737 return rc;
1738}
1739
1740
1741/**
1742 * Performs and schedules necessary updates following a CR3 load or reload when
1743 * using nested or extended paging.
1744 *
1745 * This API is an alterantive to PDMFlushTLB that avoids actually flushing the
1746 * TLB and triggering a SyncCR3.
1747 *
1748 * This will normally involve mapping the guest PD or nPDPT
1749 *
1750 * @returns VBox status code.
1751 * @retval VINF_SUCCESS.
1752 * @retval (If applied when not in nested mode: VINF_PGM_SYNC_CR3 if monitoring
1753 * requires a CR3 sync. This can safely be ignored and overridden since
1754 * the FF will be set too then.)
1755 * @param pVCpu VMCPU handle.
1756 * @param cr3 The new cr3.
1757 */
1758VMMDECL(int) PGMUpdateCR3(PVMCPU pVCpu, uint64_t cr3)
1759{
1760 PVM pVM = pVCpu->CTX_SUFF(pVM);
1761
1762 LogFlow(("PGMUpdateCR3: cr3=%RX64 OldCr3=%RX64\n", cr3, pVCpu->pgm.s.GCPhysCR3));
1763
1764 /* We assume we're only called in nested paging mode. */
1765 Assert(HWACCMIsNestedPagingActive(pVM) || pVCpu->pgm.s.enmShadowMode == PGMMODE_EPT);
1766 Assert(pVM->pgm.s.fMappingsDisabled);
1767 Assert(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3));
1768
1769 /*
1770 * Remap the CR3 content and adjust the monitoring if CR3 was actually changed.
1771 */
1772 int rc = VINF_SUCCESS;
1773 RTGCPHYS GCPhysCR3;
1774 switch (pVCpu->pgm.s.enmGuestMode)
1775 {
1776 case PGMMODE_PAE:
1777 case PGMMODE_PAE_NX:
1778 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAE_PAGE_MASK);
1779 break;
1780 case PGMMODE_AMD64:
1781 case PGMMODE_AMD64_NX:
1782 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_AMD64_PAGE_MASK);
1783 break;
1784 default:
1785 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAGE_MASK);
1786 break;
1787 }
1788 if (pVCpu->pgm.s.GCPhysCR3 != GCPhysCR3)
1789 {
1790 pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
1791 rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
1792 AssertRCSuccess(rc); /* Assumes VINF_PGM_SYNC_CR3 doesn't apply to nested paging. */ /** @todo this isn't true for the mac, but we need hw to test/fix this. */
1793 }
1794 return rc;
1795}
1796
1797
1798/**
1799 * Synchronize the paging structures.
1800 *
1801 * This function is called in response to the VM_FF_PGM_SYNC_CR3 and
1802 * VM_FF_PGM_SYNC_CR3_NONGLOBAL. Those two force action flags are set
1803 * in several places, most importantly whenever the CR3 is loaded.
1804 *
1805 * @returns VBox status code.
1806 * @param pVCpu VMCPU handle.
1807 * @param cr0 Guest context CR0 register
1808 * @param cr3 Guest context CR3 register
1809 * @param cr4 Guest context CR4 register
1810 * @param fGlobal Including global page directories or not
1811 */
1812VMMDECL(int) PGMSyncCR3(PVMCPU pVCpu, uint64_t cr0, uint64_t cr3, uint64_t cr4, bool fGlobal)
1813{
1814 PVM pVM = pVCpu->CTX_SUFF(pVM);
1815 int rc;
1816
1817 /*
1818 * The pool may have pending stuff and even require a return to ring-3 to
1819 * clear the whole thing.
1820 */
1821 rc = pgmPoolSyncCR3(pVCpu);
1822 if (rc != VINF_SUCCESS)
1823 return rc;
1824
1825 /*
1826 * We might be called when we shouldn't.
1827 *
1828 * The mode switching will ensure that the PD is resynced
1829 * after every mode switch. So, if we find ourselves here
1830 * when in protected or real mode we can safely disable the
1831 * FF and return immediately.
1832 */
1833 if (pVCpu->pgm.s.enmGuestMode <= PGMMODE_PROTECTED)
1834 {
1835 Assert((cr0 & (X86_CR0_PG | X86_CR0_PE)) != (X86_CR0_PG | X86_CR0_PE));
1836 Assert(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL));
1837 VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1838 VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
1839 return VINF_SUCCESS;
1840 }
1841
1842 /* If global pages are not supported, then all flushes are global. */
1843 if (!(cr4 & X86_CR4_PGE))
1844 fGlobal = true;
1845 LogFlow(("PGMSyncCR3: cr0=%RX64 cr3=%RX64 cr4=%RX64 fGlobal=%d[%d,%d]\n", cr0, cr3, cr4, fGlobal,
1846 VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3), VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL)));
1847
1848 /*
1849 * Check if we need to finish an aborted MapCR3 call (see PGMFlushTLB).
1850 * This should be done before SyncCR3.
1851 */
1852 if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MAP_CR3)
1853 {
1854 pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_MAP_CR3;
1855
1856 RTGCPHYS GCPhysCR3Old = pVCpu->pgm.s.GCPhysCR3;
1857 RTGCPHYS GCPhysCR3;
1858 switch (pVCpu->pgm.s.enmGuestMode)
1859 {
1860 case PGMMODE_PAE:
1861 case PGMMODE_PAE_NX:
1862 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAE_PAGE_MASK);
1863 break;
1864 case PGMMODE_AMD64:
1865 case PGMMODE_AMD64_NX:
1866 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_AMD64_PAGE_MASK);
1867 break;
1868 default:
1869 GCPhysCR3 = (RTGCPHYS)(cr3 & X86_CR3_PAGE_MASK);
1870 break;
1871 }
1872
1873 if (pVCpu->pgm.s.GCPhysCR3 != GCPhysCR3)
1874 {
1875 pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3;
1876 rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
1877 }
1878 /* Make sure we check for pending pgm pool syncs as we clear VMCPU_FF_PGM_SYNC_CR3 later on! */
1879 if ( rc == VINF_PGM_SYNC_CR3
1880 || (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL))
1881 {
1882 Log(("PGMSyncCR3: pending pgm pool sync after MapCR3!\n"));
1883#ifdef IN_RING3
1884 rc = pgmPoolSyncCR3(pVCpu);
1885#else
1886 if (rc == VINF_PGM_SYNC_CR3)
1887 pVCpu->pgm.s.GCPhysCR3 = GCPhysCR3Old;
1888 return VINF_PGM_SYNC_CR3;
1889#endif
1890 }
1891 AssertRCReturn(rc, rc);
1892 AssertRCSuccessReturn(rc, VERR_INTERNAL_ERROR);
1893 }
1894
1895 /*
1896 * Let the 'Bth' function do the work and we'll just keep track of the flags.
1897 */
1898 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,SyncCR3), a);
1899 rc = PGM_BTH_PFN(SyncCR3, pVCpu)(pVCpu, cr0, cr3, cr4, fGlobal);
1900 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,SyncCR3), a);
1901 AssertMsg(rc == VINF_SUCCESS || rc == VINF_PGM_SYNC_CR3 || RT_FAILURE(rc), ("rc=%Rrc\n", rc));
1902 if (rc == VINF_SUCCESS)
1903 {
1904 if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
1905 {
1906 /* Go back to ring 3 if a pgm pool sync is again pending. */
1907 return VINF_PGM_SYNC_CR3;
1908 }
1909
1910 if (!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_ALWAYS))
1911 {
1912 Assert(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL));
1913 VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
1914 VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
1915 }
1916
1917 /*
1918 * Check if we have a pending update of the CR3 monitoring.
1919 */
1920 if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3)
1921 {
1922 pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_MONITOR_CR3;
1923 Assert(!pVM->pgm.s.fMappingsFixed); Assert(!pVM->pgm.s.fMappingsDisabled);
1924 }
1925 }
1926
1927 /*
1928 * Now flush the CR3 (guest context).
1929 */
1930 if (rc == VINF_SUCCESS)
1931 PGM_INVL_VCPU_TLBS(pVCpu);
1932 return rc;
1933}
1934
1935
1936/**
1937 * Called whenever CR0 or CR4 in a way which may change
1938 * the paging mode.
1939 *
1940 * @returns VBox status code, with the following informational code for
1941 * VM scheduling.
1942 * @retval VINF_SUCCESS if the was no change, or it was successfully dealt with.
1943 * @retval VINF_PGM_CHANGE_MODE if we're in RC or R0 and the mode changes.
1944 * (I.e. not in R3.)
1945 * @retval VINF_EM_SUSPEND or VINF_EM_OFF on a fatal runtime error. (R3 only)
1946 *
1947 * @param pVCpu VMCPU handle.
1948 * @param cr0 The new cr0.
1949 * @param cr4 The new cr4.
1950 * @param efer The new extended feature enable register.
1951 */
1952VMMDECL(int) PGMChangeMode(PVMCPU pVCpu, uint64_t cr0, uint64_t cr4, uint64_t efer)
1953{
1954 PVM pVM = pVCpu->CTX_SUFF(pVM);
1955 PGMMODE enmGuestMode;
1956
1957 /*
1958 * Calc the new guest mode.
1959 */
1960 if (!(cr0 & X86_CR0_PE))
1961 enmGuestMode = PGMMODE_REAL;
1962 else if (!(cr0 & X86_CR0_PG))
1963 enmGuestMode = PGMMODE_PROTECTED;
1964 else if (!(cr4 & X86_CR4_PAE))
1965 enmGuestMode = PGMMODE_32_BIT;
1966 else if (!(efer & MSR_K6_EFER_LME))
1967 {
1968 if (!(efer & MSR_K6_EFER_NXE))
1969 enmGuestMode = PGMMODE_PAE;
1970 else
1971 enmGuestMode = PGMMODE_PAE_NX;
1972 }
1973 else
1974 {
1975 if (!(efer & MSR_K6_EFER_NXE))
1976 enmGuestMode = PGMMODE_AMD64;
1977 else
1978 enmGuestMode = PGMMODE_AMD64_NX;
1979 }
1980
1981 /*
1982 * Did it change?
1983 */
1984 if (pVCpu->pgm.s.enmGuestMode == enmGuestMode)
1985 return VINF_SUCCESS;
1986
1987 /* Flush the TLB */
1988 PGM_INVL_VCPU_TLBS(pVCpu);
1989
1990#ifdef IN_RING3
1991 return PGMR3ChangeMode(pVM, pVCpu, enmGuestMode);
1992#else
1993 LogFlow(("PGMChangeMode: returns VINF_PGM_CHANGE_MODE.\n"));
1994 return VINF_PGM_CHANGE_MODE;
1995#endif
1996}
1997
1998
1999/**
2000 * Gets the current guest paging mode.
2001 *
2002 * If you just need the CPU mode (real/protected/long), use CPUMGetGuestMode().
2003 *
2004 * @returns The current paging mode.
2005 * @param pVCpu VMCPU handle.
2006 */
2007VMMDECL(PGMMODE) PGMGetGuestMode(PVMCPU pVCpu)
2008{
2009 return pVCpu->pgm.s.enmGuestMode;
2010}
2011
2012
2013/**
2014 * Gets the current shadow paging mode.
2015 *
2016 * @returns The current paging mode.
2017 * @param pVCpu VMCPU handle.
2018 */
2019VMMDECL(PGMMODE) PGMGetShadowMode(PVMCPU pVCpu)
2020{
2021 return pVCpu->pgm.s.enmShadowMode;
2022}
2023
2024/**
2025 * Gets the current host paging mode.
2026 *
2027 * @returns The current paging mode.
2028 * @param pVM The VM handle.
2029 */
2030VMMDECL(PGMMODE) PGMGetHostMode(PVM pVM)
2031{
2032 switch (pVM->pgm.s.enmHostMode)
2033 {
2034 case SUPPAGINGMODE_32_BIT:
2035 case SUPPAGINGMODE_32_BIT_GLOBAL:
2036 return PGMMODE_32_BIT;
2037
2038 case SUPPAGINGMODE_PAE:
2039 case SUPPAGINGMODE_PAE_GLOBAL:
2040 return PGMMODE_PAE;
2041
2042 case SUPPAGINGMODE_PAE_NX:
2043 case SUPPAGINGMODE_PAE_GLOBAL_NX:
2044 return PGMMODE_PAE_NX;
2045
2046 case SUPPAGINGMODE_AMD64:
2047 case SUPPAGINGMODE_AMD64_GLOBAL:
2048 return PGMMODE_AMD64;
2049
2050 case SUPPAGINGMODE_AMD64_NX:
2051 case SUPPAGINGMODE_AMD64_GLOBAL_NX:
2052 return PGMMODE_AMD64_NX;
2053
2054 default: AssertMsgFailed(("enmHostMode=%d\n", pVM->pgm.s.enmHostMode)); break;
2055 }
2056
2057 return PGMMODE_INVALID;
2058}
2059
2060
2061/**
2062 * Get mode name.
2063 *
2064 * @returns read-only name string.
2065 * @param enmMode The mode which name is desired.
2066 */
2067VMMDECL(const char *) PGMGetModeName(PGMMODE enmMode)
2068{
2069 switch (enmMode)
2070 {
2071 case PGMMODE_REAL: return "Real";
2072 case PGMMODE_PROTECTED: return "Protected";
2073 case PGMMODE_32_BIT: return "32-bit";
2074 case PGMMODE_PAE: return "PAE";
2075 case PGMMODE_PAE_NX: return "PAE+NX";
2076 case PGMMODE_AMD64: return "AMD64";
2077 case PGMMODE_AMD64_NX: return "AMD64+NX";
2078 case PGMMODE_NESTED: return "Nested";
2079 case PGMMODE_EPT: return "EPT";
2080 default: return "unknown mode value";
2081 }
2082}
2083
2084
2085/**
2086 * Check if any pgm pool pages are marked dirty (not monitored)
2087 *
2088 * @returns bool locked/not locked
2089 * @param pVM The VM to operate on.
2090 */
2091VMMDECL(bool) PGMHasDirtyPages(PVM pVM)
2092{
2093 return pVM->pgm.s.CTX_SUFF(pPool)->cDirtyPages != 0;
2094}
2095
2096/**
2097 * Check if the PGM lock is currently taken.
2098 *
2099 * @returns bool locked/not locked
2100 * @param pVM The VM to operate on.
2101 */
2102VMMDECL(bool) PGMIsLocked(PVM pVM)
2103{
2104 return PDMCritSectIsOwned(&pVM->pgm.s.CritSect);
2105}
2106
2107
2108/**
2109 * Check if this VCPU currently owns the PGM lock.
2110 *
2111 * @returns bool owner/not owner
2112 * @param pVM The VM to operate on.
2113 */
2114VMMDECL(bool) PGMIsLockOwner(PVM pVM)
2115{
2116 return PDMCritSectIsOwner(&pVM->pgm.s.CritSect);
2117}
2118
2119
2120/**
2121 * Enable or disable large page usage
2122 *
2123 * @param pVM The VM to operate on.
2124 * @param fUseLargePages Use/not use large pages
2125 */
2126VMMDECL(void) PGMSetLargePageUsage(PVM pVM, bool fUseLargePages)
2127{
2128 pVM->fUseLargePages = fUseLargePages;
2129}
2130
2131/**
2132 * Acquire the PGM lock.
2133 *
2134 * @returns VBox status code
2135 * @param pVM The VM to operate on.
2136 */
2137int pgmLock(PVM pVM)
2138{
2139 int rc = PDMCritSectEnter(&pVM->pgm.s.CritSect, VERR_SEM_BUSY);
2140#if defined(IN_RC) || defined(IN_RING0)
2141 if (rc == VERR_SEM_BUSY)
2142 rc = VMMRZCallRing3NoCpu(pVM, VMMCALLRING3_PGM_LOCK, 0);
2143#endif
2144 AssertMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc));
2145 return rc;
2146}
2147
2148
2149/**
2150 * Release the PGM lock.
2151 *
2152 * @returns VBox status code
2153 * @param pVM The VM to operate on.
2154 */
2155void pgmUnlock(PVM pVM)
2156{
2157 PDMCritSectLeave(&pVM->pgm.s.CritSect);
2158}
2159
2160#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
2161
2162/**
2163 * Temporarily maps one guest page specified by GC physical address.
2164 * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
2165 *
2166 * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
2167 * reused after 8 mappings (or perhaps a few more if you score with the cache).
2168 *
2169 * @returns VBox status.
2170 * @param pVM VM handle.
2171 * @param GCPhys GC Physical address of the page.
2172 * @param ppv Where to store the address of the mapping.
2173 */
2174VMMDECL(int) PGMDynMapGCPage(PVM pVM, RTGCPHYS GCPhys, void **ppv)
2175{
2176 AssertMsg(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%RGp\n", GCPhys));
2177
2178 /*
2179 * Get the ram range.
2180 */
2181 PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges);
2182 while (pRam && GCPhys - pRam->GCPhys >= pRam->cb)
2183 pRam = pRam->CTX_SUFF(pNext);
2184 if (!pRam)
2185 {
2186 AssertMsgFailed(("Invalid physical address %RGp!\n", GCPhys));
2187 return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS;
2188 }
2189
2190 /*
2191 * Pass it on to PGMDynMapHCPage.
2192 */
2193 RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
2194 //Log(("PGMDynMapGCPage: GCPhys=%RGp HCPhys=%RHp\n", GCPhys, HCPhys));
2195#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
2196 pgmR0DynMapHCPageInlined(&pVM->pgm.s, HCPhys, ppv);
2197#else
2198 PGMDynMapHCPage(pVM, HCPhys, ppv);
2199#endif
2200 return VINF_SUCCESS;
2201}
2202
2203
2204/**
2205 * Temporarily maps one guest page specified by unaligned GC physical address.
2206 * These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
2207 *
2208 * Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
2209 * reused after 8 mappings (or perhaps a few more if you score with the cache).
2210 *
2211 * The caller is aware that only the speicifed page is mapped and that really bad things
2212 * will happen if writing beyond the page!
2213 *
2214 * @returns VBox status.
2215 * @param pVM VM handle.
2216 * @param GCPhys GC Physical address within the page to be mapped.
2217 * @param ppv Where to store the address of the mapping address corresponding to GCPhys.
2218 */
2219VMMDECL(int) PGMDynMapGCPageOff(PVM pVM, RTGCPHYS GCPhys, void **ppv)
2220{
2221 /*
2222 * Get the ram range.
2223 */
2224 PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges);
2225 while (pRam && GCPhys - pRam->GCPhys >= pRam->cb)
2226 pRam = pRam->CTX_SUFF(pNext);
2227 if (!pRam)
2228 {
2229 AssertMsgFailed(("Invalid physical address %RGp!\n", GCPhys));
2230 return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS;
2231 }
2232
2233 /*
2234 * Pass it on to PGMDynMapHCPage.
2235 */
2236 RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
2237#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
2238 pgmR0DynMapHCPageInlined(&pVM->pgm.s, HCPhys, ppv);
2239#else
2240 PGMDynMapHCPage(pVM, HCPhys, ppv);
2241#endif
2242 *ppv = (void *)((uintptr_t)*ppv | (uintptr_t)(GCPhys & PAGE_OFFSET_MASK));
2243 return VINF_SUCCESS;
2244}
2245
2246# ifdef IN_RC
2247
2248/**
2249 * Temporarily maps one host page specified by HC physical address.
2250 *
2251 * Be WARNED that the dynamic page mapping area is small, 16 pages, thus the space is
2252 * reused after 16 mappings (or perhaps a few more if you score with the cache).
2253 *
2254 * @returns VINF_SUCCESS, will bail out to ring-3 on failure.
2255 * @param pVM VM handle.
2256 * @param HCPhys HC Physical address of the page.
2257 * @param ppv Where to store the address of the mapping. This is the
2258 * address of the PAGE not the exact address corresponding
2259 * to HCPhys. Use PGMDynMapHCPageOff if you care for the
2260 * page offset.
2261 */
2262VMMDECL(int) PGMDynMapHCPage(PVM pVM, RTHCPHYS HCPhys, void **ppv)
2263{
2264 AssertMsg(!(HCPhys & PAGE_OFFSET_MASK), ("HCPhys=%RHp\n", HCPhys));
2265
2266 /*
2267 * Check the cache.
2268 */
2269 register unsigned iCache;
2270 for (iCache = 0;iCache < RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache);iCache++)
2271 {
2272 static const uint8_t au8Trans[MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT][RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache)] =
2273 {
2274 { 0, 9, 10, 11, 12, 13, 14, 15},
2275 { 0, 1, 10, 11, 12, 13, 14, 15},
2276 { 0, 1, 2, 11, 12, 13, 14, 15},
2277 { 0, 1, 2, 3, 12, 13, 14, 15},
2278 { 0, 1, 2, 3, 4, 13, 14, 15},
2279 { 0, 1, 2, 3, 4, 5, 14, 15},
2280 { 0, 1, 2, 3, 4, 5, 6, 15},
2281 { 0, 1, 2, 3, 4, 5, 6, 7},
2282 { 8, 1, 2, 3, 4, 5, 6, 7},
2283 { 8, 9, 2, 3, 4, 5, 6, 7},
2284 { 8, 9, 10, 3, 4, 5, 6, 7},
2285 { 8, 9, 10, 11, 4, 5, 6, 7},
2286 { 8, 9, 10, 11, 12, 5, 6, 7},
2287 { 8, 9, 10, 11, 12, 13, 6, 7},
2288 { 8, 9, 10, 11, 12, 13, 14, 7},
2289 { 8, 9, 10, 11, 12, 13, 14, 15},
2290 };
2291 AssertCompile(RT_ELEMENTS(au8Trans) == 16);
2292 AssertCompile(RT_ELEMENTS(au8Trans[0]) == 8);
2293
2294 if (pVM->pgm.s.aHCPhysDynPageMapCache[iCache] == HCPhys)
2295 {
2296 int iPage = au8Trans[pVM->pgm.s.iDynPageMapLast][iCache];
2297
2298 /* The cache can get out of sync with locked entries. (10 locked, 2 overwrites its cache position, last = 11, lookup 2 -> page 10 instead of 2) */
2299 if ((pVM->pgm.s.paDynPageMap32BitPTEsGC[iPage].u & X86_PTE_PG_MASK) == HCPhys)
2300 {
2301 void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
2302 *ppv = pv;
2303 STAM_COUNTER_INC(&pVM->pgm.s.StatRCDynMapCacheHits);
2304 Log4(("PGMGCDynMapHCPage: HCPhys=%RHp pv=%p iPage=%d iCache=%d\n", HCPhys, pv, iPage, iCache));
2305 return VINF_SUCCESS;
2306 }
2307 LogFlow(("Out of sync entry %d\n", iPage));
2308 }
2309 }
2310 AssertCompile(RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) == 8);
2311 AssertCompile((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) == 16);
2312 STAM_COUNTER_INC(&pVM->pgm.s.StatRCDynMapCacheMisses);
2313
2314 /*
2315 * Update the page tables.
2316 */
2317 unsigned iPage = pVM->pgm.s.iDynPageMapLast;
2318 unsigned i;
2319 for (i = 0; i < (MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT); i++)
2320 {
2321 pVM->pgm.s.iDynPageMapLast = iPage = (iPage + 1) & ((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) - 1);
2322 if (!pVM->pgm.s.aLockedDynPageMapCache[iPage])
2323 break;
2324 iPage++;
2325 }
2326 AssertRelease(i != (MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT));
2327
2328 pVM->pgm.s.aHCPhysDynPageMapCache[iPage & (RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) - 1)] = HCPhys;
2329 pVM->pgm.s.paDynPageMap32BitPTEsGC[iPage].u = (uint32_t)HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D;
2330 pVM->pgm.s.paDynPageMapPaePTEsGC[iPage].u = HCPhys | X86_PTE_P | X86_PTE_A | X86_PTE_D;
2331 pVM->pgm.s.aLockedDynPageMapCache[iPage] = 0;
2332
2333 void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
2334 *ppv = pv;
2335 ASMInvalidatePage(pv);
2336 Log4(("PGMGCDynMapHCPage: HCPhys=%RHp pv=%p iPage=%d\n", HCPhys, pv, iPage));
2337 return VINF_SUCCESS;
2338}
2339
2340
2341/**
2342 * Temporarily lock a dynamic page to prevent it from being reused.
2343 *
2344 * @param pVM VM handle.
2345 * @param GCPage GC address of page
2346 */
2347VMMDECL(void) PGMDynLockHCPage(PVM pVM, RCPTRTYPE(uint8_t *) GCPage)
2348{
2349 unsigned iPage;
2350
2351 Assert(GCPage >= pVM->pgm.s.pbDynPageMapBaseGC && GCPage < (pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE));
2352 iPage = ((uintptr_t)(GCPage - pVM->pgm.s.pbDynPageMapBaseGC)) >> PAGE_SHIFT;
2353 ASMAtomicIncU32(&pVM->pgm.s.aLockedDynPageMapCache[iPage]);
2354 Log4(("PGMDynLockHCPage %RRv iPage=%d\n", GCPage, iPage));
2355}
2356
2357
2358/**
2359 * Unlock a dynamic page
2360 *
2361 * @param pVM VM handle.
2362 * @param GCPage GC address of page
2363 */
2364VMMDECL(void) PGMDynUnlockHCPage(PVM pVM, RCPTRTYPE(uint8_t *) GCPage)
2365{
2366 unsigned iPage;
2367
2368 AssertCompile(RT_ELEMENTS(pVM->pgm.s.aLockedDynPageMapCache) == 2* RT_ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache));
2369 AssertCompileMemberSize(VM, pgm.s.aLockedDynPageMapCache, sizeof(uint32_t) * (MM_HYPER_DYNAMIC_SIZE >> (PAGE_SHIFT)));
2370
2371 Assert(GCPage >= pVM->pgm.s.pbDynPageMapBaseGC && GCPage < (pVM->pgm.s.pbDynPageMapBaseGC + MM_HYPER_DYNAMIC_SIZE));
2372 iPage = ((uintptr_t)(GCPage - pVM->pgm.s.pbDynPageMapBaseGC)) >> PAGE_SHIFT;
2373 Assert(pVM->pgm.s.aLockedDynPageMapCache[iPage]);
2374 ASMAtomicDecU32(&pVM->pgm.s.aLockedDynPageMapCache[iPage]);
2375 Log4(("PGMDynUnlockHCPage %RRv iPage=%d\n", GCPage, iPage));
2376}
2377
2378
2379# ifdef VBOX_STRICT
2380/**
2381 * Check for lock leaks.
2382 *
2383 * @param pVM VM handle.
2384 */
2385VMMDECL(void) PGMDynCheckLocks(PVM pVM)
2386{
2387 for (unsigned i=0;i<RT_ELEMENTS(pVM->pgm.s.aLockedDynPageMapCache);i++)
2388 Assert(!pVM->pgm.s.aLockedDynPageMapCache[i]);
2389}
2390# endif /* VBOX_STRICT */
2391
2392# endif /* IN_RC */
2393#endif /* IN_RC || VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 */
2394
2395#if !defined(IN_R0) || defined(LOG_ENABLED)
2396
2397/** Format handler for PGMPAGE.
2398 * @copydoc FNRTSTRFORMATTYPE */
2399static DECLCALLBACK(size_t) pgmFormatTypeHandlerPage(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
2400 const char *pszType, void const *pvValue,
2401 int cchWidth, int cchPrecision, unsigned fFlags,
2402 void *pvUser)
2403{
2404 size_t cch;
2405 PCPGMPAGE pPage = (PCPGMPAGE)pvValue;
2406 if (VALID_PTR(pPage))
2407 {
2408 char szTmp[64+80];
2409
2410 cch = 0;
2411
2412 /* The single char state stuff. */
2413 static const char s_achPageStates[4] = { 'Z', 'A', 'W', 'S' };
2414 szTmp[cch++] = s_achPageStates[PGM_PAGE_GET_STATE(pPage)];
2415
2416#define IS_PART_INCLUDED(lvl) ( !(fFlags & RTSTR_F_PRECISION) || cchPrecision == (lvl) || cchPrecision >= (lvl)+10 )
2417 if (IS_PART_INCLUDED(5))
2418 {
2419 static const char s_achHandlerStates[4] = { '-', 't', 'w', 'a' };
2420 szTmp[cch++] = s_achHandlerStates[PGM_PAGE_GET_HNDL_PHYS_STATE(pPage)];
2421 szTmp[cch++] = s_achHandlerStates[PGM_PAGE_GET_HNDL_VIRT_STATE(pPage)];
2422 }
2423
2424 /* The type. */
2425 if (IS_PART_INCLUDED(4))
2426 {
2427 szTmp[cch++] = ':';
2428 static const char s_achPageTypes[8][4] = { "INV", "RAM", "MI2", "M2A", "SHA", "ROM", "MIO", "BAD" };
2429 szTmp[cch++] = s_achPageTypes[PGM_PAGE_GET_TYPE(pPage)][0];
2430 szTmp[cch++] = s_achPageTypes[PGM_PAGE_GET_TYPE(pPage)][1];
2431 szTmp[cch++] = s_achPageTypes[PGM_PAGE_GET_TYPE(pPage)][2];
2432 }
2433
2434 /* The numbers. */
2435 if (IS_PART_INCLUDED(3))
2436 {
2437 szTmp[cch++] = ':';
2438 cch += RTStrFormatNumber(&szTmp[cch], PGM_PAGE_GET_HCPHYS(pPage), 16, 12, 0, RTSTR_F_ZEROPAD | RTSTR_F_64BIT);
2439 }
2440
2441 if (IS_PART_INCLUDED(2))
2442 {
2443 szTmp[cch++] = ':';
2444 cch += RTStrFormatNumber(&szTmp[cch], PGM_PAGE_GET_PAGEID(pPage), 16, 7, 0, RTSTR_F_ZEROPAD | RTSTR_F_32BIT);
2445 }
2446
2447 if (IS_PART_INCLUDED(6))
2448 {
2449 szTmp[cch++] = ':';
2450 static const char s_achRefs[4] = { '-', 'U', '!', 'L' };
2451 szTmp[cch++] = s_achRefs[PGM_PAGE_GET_TD_CREFS(pPage)];
2452 cch += RTStrFormatNumber(&szTmp[cch], PGM_PAGE_GET_TD_IDX(pPage), 16, 4, 0, RTSTR_F_ZEROPAD | RTSTR_F_16BIT);
2453 }
2454#undef IS_PART_INCLUDED
2455
2456 cch = pfnOutput(pvArgOutput, szTmp, cch);
2457 }
2458 else
2459 cch = pfnOutput(pvArgOutput, "<bad-pgmpage-ptr>", sizeof("<bad-pgmpage-ptr>") - 1);
2460 return cch;
2461}
2462
2463
2464/** Format handler for PGMRAMRANGE.
2465 * @copydoc FNRTSTRFORMATTYPE */
2466static DECLCALLBACK(size_t) pgmFormatTypeHandlerRamRange(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
2467 const char *pszType, void const *pvValue,
2468 int cchWidth, int cchPrecision, unsigned fFlags,
2469 void *pvUser)
2470{
2471 size_t cch;
2472 PGMRAMRANGE const *pRam = (PGMRAMRANGE const *)pvValue;
2473 if (VALID_PTR(pRam))
2474 {
2475 char szTmp[80];
2476 cch = RTStrPrintf(szTmp, sizeof(szTmp), "%RGp-%RGp", pRam->GCPhys, pRam->GCPhysLast);
2477 cch = pfnOutput(pvArgOutput, szTmp, cch);
2478 }
2479 else
2480 cch = pfnOutput(pvArgOutput, "<bad-pgmramrange-ptr>", sizeof("<bad-pgmramrange-ptr>") - 1);
2481 return cch;
2482}
2483
2484/** Format type andlers to be registered/deregistered. */
2485static const struct
2486{
2487 char szType[24];
2488 PFNRTSTRFORMATTYPE pfnHandler;
2489} g_aPgmFormatTypes[] =
2490{
2491 { "pgmpage", pgmFormatTypeHandlerPage },
2492 { "pgmramrange", pgmFormatTypeHandlerRamRange }
2493};
2494
2495#endif /* !IN_R0 || LOG_ENABLED */
2496
2497
2498/**
2499 * Registers the global string format types.
2500 *
2501 * This should be called at module load time or in some other manner that ensure
2502 * that it's called exactly one time.
2503 *
2504 * @returns IPRT status code on RTStrFormatTypeRegister failure.
2505 */
2506VMMDECL(int) PGMRegisterStringFormatTypes(void)
2507{
2508#if !defined(IN_R0) || defined(LOG_ENABLED)
2509 int rc = VINF_SUCCESS;
2510 unsigned i;
2511 for (i = 0; RT_SUCCESS(rc) && i < RT_ELEMENTS(g_aPgmFormatTypes); i++)
2512 {
2513 rc = RTStrFormatTypeRegister(g_aPgmFormatTypes[i].szType, g_aPgmFormatTypes[i].pfnHandler, NULL);
2514# ifdef IN_RING0
2515 if (rc == VERR_ALREADY_EXISTS)
2516 {
2517 /* in case of cleanup failure in ring-0 */
2518 RTStrFormatTypeDeregister(g_aPgmFormatTypes[i].szType);
2519 rc = RTStrFormatTypeRegister(g_aPgmFormatTypes[i].szType, g_aPgmFormatTypes[i].pfnHandler, NULL);
2520 }
2521# endif
2522 }
2523 if (RT_FAILURE(rc))
2524 while (i-- > 0)
2525 RTStrFormatTypeDeregister(g_aPgmFormatTypes[i].szType);
2526
2527 return rc;
2528#else
2529 return VINF_SUCCESS;
2530#endif
2531}
2532
2533
2534/**
2535 * Deregisters the global string format types.
2536 *
2537 * This should be called at module unload time or in some other manner that
2538 * ensure that it's called exactly one time.
2539 */
2540VMMDECL(void) PGMDeregisterStringFormatTypes(void)
2541{
2542#if !defined(IN_R0) || defined(LOG_ENABLED)
2543 for (unsigned i = 0; i < RT_ELEMENTS(g_aPgmFormatTypes); i++)
2544 RTStrFormatTypeDeregister(g_aPgmFormatTypes[i].szType);
2545#endif
2546}
2547
2548#ifdef VBOX_STRICT
2549
2550/**
2551 * Asserts that there are no mapping conflicts.
2552 *
2553 * @returns Number of conflicts.
2554 * @param pVM The VM Handle.
2555 */
2556VMMDECL(unsigned) PGMAssertNoMappingConflicts(PVM pVM)
2557{
2558 unsigned cErrors = 0;
2559
2560 /* Only applies to raw mode -> 1 VPCU */
2561 Assert(pVM->cCpus == 1);
2562 PVMCPU pVCpu = &pVM->aCpus[0];
2563
2564 /*
2565 * Check for mapping conflicts.
2566 */
2567 for (PPGMMAPPING pMapping = pVM->pgm.s.CTX_SUFF(pMappings);
2568 pMapping;
2569 pMapping = pMapping->CTX_SUFF(pNext))
2570 {
2571 /** @todo This is slow and should be optimized, but since it's just assertions I don't care now. */
2572 for (RTGCPTR GCPtr = pMapping->GCPtr;
2573 GCPtr <= pMapping->GCPtrLast;
2574 GCPtr += PAGE_SIZE)
2575 {
2576 int rc = PGMGstGetPage(pVCpu, (RTGCPTR)GCPtr, NULL, NULL);
2577 if (rc != VERR_PAGE_TABLE_NOT_PRESENT)
2578 {
2579 AssertMsgFailed(("Conflict at %RGv with %s\n", GCPtr, R3STRING(pMapping->pszDesc)));
2580 cErrors++;
2581 break;
2582 }
2583 }
2584 }
2585
2586 return cErrors;
2587}
2588
2589
2590/**
2591 * Asserts that everything related to the guest CR3 is correctly shadowed.
2592 *
2593 * This will call PGMAssertNoMappingConflicts() and PGMAssertHandlerAndFlagsInSync(),
2594 * and assert the correctness of the guest CR3 mapping before asserting that the
2595 * shadow page tables is in sync with the guest page tables.
2596 *
2597 * @returns Number of conflicts.
2598 * @param pVM The VM Handle.
2599 * @param pVCpu VMCPU handle.
2600 * @param cr3 The current guest CR3 register value.
2601 * @param cr4 The current guest CR4 register value.
2602 */
2603VMMDECL(unsigned) PGMAssertCR3(PVM pVM, PVMCPU pVCpu, uint64_t cr3, uint64_t cr4)
2604{
2605 STAM_PROFILE_START(&pVCpu->pgm.s.CTX_MID_Z(Stat,SyncCR3), a);
2606 pgmLock(pVM);
2607 unsigned cErrors = PGM_BTH_PFN(AssertCR3, pVCpu)(pVCpu, cr3, cr4, 0, ~(RTGCPTR)0);
2608 pgmUnlock(pVM);
2609 STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_MID_Z(Stat,SyncCR3), a);
2610 return cErrors;
2611}
2612
2613#endif /* VBOX_STRICT */
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