VirtualBox

source: vbox/trunk/src/VBox/VMM/MMHyper.cpp@ 20543

Last change on this file since 20543 was 20531, checked in by vboxsync, 15 years ago

MM: Added MMR3HyperSetGuard for creating guard pages in the hyper heap.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 44.4 KB
Line 
1/* $Id: MMHyper.cpp 20531 2009-06-13 20:54:43Z vboxsync $ */
2/** @file
3 * MM - Memory Manager - Hypervisor Memory Area.
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/*******************************************************************************
24* Header Files *
25*******************************************************************************/
26#define LOG_GROUP LOG_GROUP_MM_HYPER
27#include <VBox/pgm.h>
28#include <VBox/mm.h>
29#include <VBox/dbgf.h>
30#include "MMInternal.h"
31#include <VBox/vm.h>
32#include <VBox/err.h>
33#include <VBox/param.h>
34#include <VBox/log.h>
35#include <iprt/alloc.h>
36#include <iprt/assert.h>
37#include <iprt/string.h>
38
39
40/*******************************************************************************
41* Internal Functions *
42*******************************************************************************/
43static DECLCALLBACK(bool) mmR3HyperRelocateCallback(PVM pVM, RTGCPTR GCPtrOld, RTGCPTR GCPtrNew, PGMRELOCATECALL enmMode, void *pvUser);
44static int mmR3HyperMap(PVM pVM, const size_t cb, const char *pszDesc, PRTGCPTR pGCPtr, PMMLOOKUPHYPER *ppLookup);
45static int mmR3HyperHeapCreate(PVM pVM, const size_t cb, PMMHYPERHEAP *ppHeap, PRTR0PTR pR0PtrHeap);
46static int mmR3HyperHeapMap(PVM pVM, PMMHYPERHEAP pHeap, PRTGCPTR ppHeapGC);
47static DECLCALLBACK(void) mmR3HyperInfoHma(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
48
49
50
51
52/**
53 * Initializes the hypvervisor related MM stuff without
54 * calling down to PGM.
55 *
56 * PGM is not initialized at this point, PGM relies on
57 * the heap to initialize.
58 *
59 * @returns VBox status.
60 */
61int mmR3HyperInit(PVM pVM)
62{
63 LogFlow(("mmR3HyperInit:\n"));
64
65 /*
66 * Decide Hypervisor mapping in the guest context
67 * And setup various hypervisor area and heap parameters.
68 */
69 pVM->mm.s.pvHyperAreaGC = (RTGCPTR)MM_HYPER_AREA_ADDRESS;
70 pVM->mm.s.cbHyperArea = MM_HYPER_AREA_MAX_SIZE;
71 AssertRelease(RT_ALIGN_T(pVM->mm.s.pvHyperAreaGC, 1 << X86_PD_SHIFT, RTGCPTR) == pVM->mm.s.pvHyperAreaGC);
72 Assert(pVM->mm.s.pvHyperAreaGC < 0xff000000);
73
74 /** @todo @bugref{1865}, @bugref{3202}: Change the cbHyperHeap default
75 * depending on whether VT-x/AMD-V is enabled or not! Don't waste
76 * precious kernel space on heap for the PATM.
77 */
78 uint32_t cbHyperHeap;
79 int rc = CFGMR3QueryU32(CFGMR3GetChild(CFGMR3GetRoot(pVM), "MM"), "cbHyperHeap", &cbHyperHeap);
80 if (rc == VERR_CFGM_NO_PARENT || rc == VERR_CFGM_VALUE_NOT_FOUND)
81 cbHyperHeap = VMMIsHwVirtExtForced(pVM)
82 ? 640*_1K
83 : 1280*_1K;
84 else
85 AssertLogRelRCReturn(rc, rc);
86 cbHyperHeap = RT_ALIGN_32(cbHyperHeap, PAGE_SIZE);
87 LogRel(("MM: cbHyperHeap=%#x (%u)\n", cbHyperHeap, cbHyperHeap));
88
89 /*
90 * Allocate the hypervisor heap.
91 *
92 * (This must be done before we start adding memory to the
93 * hypervisor static area because lookup records are allocated from it.)
94 */
95 rc = mmR3HyperHeapCreate(pVM, cbHyperHeap, &pVM->mm.s.pHyperHeapR3, &pVM->mm.s.pHyperHeapR0);
96 if (RT_SUCCESS(rc))
97 {
98 /*
99 * Make a small head fence to fend of accidental sequential access.
100 */
101 MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
102
103 /*
104 * Map the VM structure into the hypervisor space.
105 */
106 AssertRelease(pVM->cbSelf == RT_UOFFSETOF(VM, aCpus[pVM->cCPUs]));
107 RTGCPTR GCPtr;
108 rc = MMR3HyperMapPages(pVM, pVM, pVM->pVMR0, RT_ALIGN_Z(pVM->cbSelf, PAGE_SIZE) >> PAGE_SHIFT, pVM->paVMPagesR3, "VM", &GCPtr);
109 if (RT_SUCCESS(rc))
110 {
111 pVM->pVMRC = (RTRCPTR)GCPtr;
112 for (uint32_t i = 0; i < pVM->cCPUs; i++)
113 pVM->aCpus[i].pVMRC = pVM->pVMRC;
114
115 /* Reserve a page for fencing. */
116 MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
117
118 /*
119 * Map the heap into the hypervisor space.
120 */
121 rc = mmR3HyperHeapMap(pVM, pVM->mm.s.pHyperHeapR3, &GCPtr);
122 if (RT_SUCCESS(rc))
123 {
124 pVM->mm.s.pHyperHeapRC = (RTRCPTR)GCPtr;
125 Assert(pVM->mm.s.pHyperHeapRC == GCPtr);
126
127 /*
128 * Register info handlers.
129 */
130 DBGFR3InfoRegisterInternal(pVM, "hma", "Show the layout of the Hypervisor Memory Area.", mmR3HyperInfoHma);
131
132 LogFlow(("mmR3HyperInit: returns VINF_SUCCESS\n"));
133 return VINF_SUCCESS;
134 }
135 /* Caller will do proper cleanup. */
136 }
137 }
138
139 LogFlow(("mmR3HyperInit: returns %Rrc\n", rc));
140 return rc;
141}
142
143
144/**
145 * Cleans up the hypervisor heap.
146 *
147 * @returns VBox status.
148 */
149int mmR3HyperTerm(PVM pVM)
150{
151 if (pVM->mm.s.pHyperHeapR3)
152 PDMR3CritSectDelete(&pVM->mm.s.pHyperHeapR3->Lock);
153
154 return VINF_SUCCESS;
155}
156
157
158/**
159 * Finalizes the HMA mapping.
160 *
161 * This is called later during init, most (all) HMA allocations should be done
162 * by the time this function is called.
163 *
164 * @returns VBox status.
165 */
166VMMR3DECL(int) MMR3HyperInitFinalize(PVM pVM)
167{
168 LogFlow(("MMR3HyperInitFinalize:\n"));
169
170 /*
171 * Initialize the hyper heap critical section.
172 */
173 int rc = PDMR3CritSectInit(pVM, &pVM->mm.s.pHyperHeapR3->Lock, "MM-HYPER");
174 AssertRC(rc);
175
176 /*
177 * Adjust and create the HMA mapping.
178 */
179 while ((RTINT)pVM->mm.s.offHyperNextStatic + 64*_1K < (RTINT)pVM->mm.s.cbHyperArea - _4M)
180 pVM->mm.s.cbHyperArea -= _4M;
181 rc = PGMR3MapPT(pVM, pVM->mm.s.pvHyperAreaGC, pVM->mm.s.cbHyperArea, 0 /*fFlags*/,
182 mmR3HyperRelocateCallback, NULL, "Hypervisor Memory Area");
183 if (RT_FAILURE(rc))
184 return rc;
185 pVM->mm.s.fPGMInitialized = true;
186
187 /*
188 * Do all the delayed mappings.
189 */
190 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uintptr_t)pVM->mm.s.pHyperHeapR3 + pVM->mm.s.offLookupHyper);
191 for (;;)
192 {
193 RTGCPTR GCPtr = pVM->mm.s.pvHyperAreaGC + pLookup->off;
194 uint32_t cPages = pLookup->cb >> PAGE_SHIFT;
195 switch (pLookup->enmType)
196 {
197 case MMLOOKUPHYPERTYPE_LOCKED:
198 {
199 PCRTHCPHYS paHCPhysPages = pLookup->u.Locked.paHCPhysPages;
200 for (uint32_t i = 0; i < cPages; i++)
201 {
202 rc = PGMMap(pVM, GCPtr + (i << PAGE_SHIFT), paHCPhysPages[i], PAGE_SIZE, 0);
203 AssertRCReturn(rc, rc);
204 }
205 break;
206 }
207
208 case MMLOOKUPHYPERTYPE_HCPHYS:
209 rc = PGMMap(pVM, GCPtr, pLookup->u.HCPhys.HCPhys, pLookup->cb, 0);
210 break;
211
212 case MMLOOKUPHYPERTYPE_GCPHYS:
213 {
214 const RTGCPHYS GCPhys = pLookup->u.GCPhys.GCPhys;
215 const uint32_t cb = pLookup->cb;
216 for (uint32_t off = 0; off < cb; off += PAGE_SIZE)
217 {
218 RTHCPHYS HCPhys;
219 rc = PGMPhysGCPhys2HCPhys(pVM, GCPhys + off, &HCPhys);
220 if (RT_FAILURE(rc))
221 break;
222 rc = PGMMap(pVM, GCPtr + off, HCPhys, PAGE_SIZE, 0);
223 if (RT_FAILURE(rc))
224 break;
225 }
226 break;
227 }
228
229 case MMLOOKUPHYPERTYPE_MMIO2:
230 {
231 const RTGCPHYS offEnd = pLookup->u.MMIO2.off + pLookup->cb;
232 for (RTGCPHYS offCur = pLookup->u.MMIO2.off; offCur < offEnd; offCur += PAGE_SIZE)
233 {
234 RTHCPHYS HCPhys;
235 rc = PGMR3PhysMMIO2GetHCPhys(pVM, pLookup->u.MMIO2.pDevIns, pLookup->u.MMIO2.iRegion, offCur, &HCPhys);
236 if (RT_FAILURE(rc))
237 break;
238 rc = PGMMap(pVM, GCPtr + (offCur - pLookup->u.MMIO2.off), HCPhys, PAGE_SIZE, 0);
239 if (RT_FAILURE(rc))
240 break;
241 }
242 break;
243 }
244
245 case MMLOOKUPHYPERTYPE_DYNAMIC:
246 /* do nothing here since these are either fences or managed by someone else using PGM. */
247 break;
248
249 default:
250 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
251 break;
252 }
253
254 if (RT_FAILURE(rc))
255 {
256 AssertMsgFailed(("rc=%Rrc cb=%d off=%#RX32 enmType=%d pszDesc=%s\n",
257 rc, pLookup->cb, pLookup->off, pLookup->enmType, pLookup->pszDesc));
258 return rc;
259 }
260
261 /* next */
262 if (pLookup->offNext == (int32_t)NIL_OFFSET)
263 break;
264 pLookup = (PMMLOOKUPHYPER)((uintptr_t)pLookup + pLookup->offNext);
265 }
266
267 LogFlow(("MMR3HyperInitFinalize: returns VINF_SUCCESS\n"));
268 return VINF_SUCCESS;
269}
270
271
272/**
273 * Callback function which will be called when PGM is trying to find
274 * a new location for the mapping.
275 *
276 * The callback is called in two modes, 1) the check mode and 2) the relocate mode.
277 * In 1) the callback should say if it objects to a suggested new location. If it
278 * accepts the new location, it is called again for doing it's relocation.
279 *
280 *
281 * @returns true if the location is ok.
282 * @returns false if another location should be found.
283 * @param pVM The VM handle.
284 * @param GCPtrOld The old virtual address.
285 * @param GCPtrNew The new virtual address.
286 * @param enmMode Used to indicate the callback mode.
287 * @param pvUser User argument. Ignored.
288 * @remark The return value is no a failure indicator, it's an acceptance
289 * indicator. Relocation can not fail!
290 */
291static DECLCALLBACK(bool) mmR3HyperRelocateCallback(PVM pVM, RTGCPTR GCPtrOld, RTGCPTR GCPtrNew, PGMRELOCATECALL enmMode, void *pvUser)
292{
293 switch (enmMode)
294 {
295 /*
296 * Verify location - all locations are good for us.
297 */
298 case PGMRELOCATECALL_SUGGEST:
299 return true;
300
301 /*
302 * Execute the relocation.
303 */
304 case PGMRELOCATECALL_RELOCATE:
305 {
306 /*
307 * Accepted!
308 */
309 AssertMsg(GCPtrOld == pVM->mm.s.pvHyperAreaGC, ("GCPtrOld=%RGv pVM->mm.s.pvHyperAreaGC=%RGv\n", GCPtrOld, pVM->mm.s.pvHyperAreaGC));
310 Log(("Relocating the hypervisor from %RGv to %RGv\n", GCPtrOld, GCPtrNew));
311
312 /*
313 * Relocate the VM structure and ourselves.
314 */
315 RTGCINTPTR offDelta = GCPtrNew - GCPtrOld;
316 pVM->pVMRC += offDelta;
317 for (uint32_t i = 0; i < pVM->cCPUs; i++)
318 pVM->aCpus[i].pVMRC = pVM->pVMRC;
319
320 pVM->mm.s.pvHyperAreaGC += offDelta;
321 Assert(pVM->mm.s.pvHyperAreaGC < _4G);
322 pVM->mm.s.pHyperHeapRC += offDelta;
323 pVM->mm.s.pHyperHeapR3->pbHeapRC += offDelta;
324 pVM->mm.s.pHyperHeapR3->pVMRC = pVM->pVMRC;
325
326 /*
327 * Relocate the rest.
328 */
329 VMR3Relocate(pVM, offDelta);
330 return true;
331 }
332
333 default:
334 AssertMsgFailed(("Invalid relocation mode %d\n", enmMode));
335 }
336
337 return false;
338}
339
340/**
341 * Service a VMMCALLHOST_MMHYPER_LOCK call.
342 *
343 * @returns VBox status code.
344 * @param pVM The VM handle.
345 */
346VMMR3DECL(int) MMR3LockCall(PVM pVM)
347{
348 PMMHYPERHEAP pHeap = pVM->mm.s.CTX_SUFF(pHyperHeap);
349
350 int rc = PDMR3CritSectEnterEx(&pHeap->Lock, true /* fHostCall */);
351 AssertRC(rc);
352 return rc;
353}
354
355/**
356 * Maps contiguous HC physical memory into the hypervisor region in the GC.
357 *
358 * @return VBox status code.
359 *
360 * @param pVM VM handle.
361 * @param pvR3 Ring-3 address of the memory. Must be page aligned!
362 * @param pvR0 Optional ring-0 address of the memory.
363 * @param HCPhys Host context physical address of the memory to be
364 * mapped. Must be page aligned!
365 * @param cb Size of the memory. Will be rounded up to nearest page.
366 * @param pszDesc Description.
367 * @param pGCPtr Where to store the GC address.
368 */
369VMMR3DECL(int) MMR3HyperMapHCPhys(PVM pVM, void *pvR3, RTR0PTR pvR0, RTHCPHYS HCPhys, size_t cb, const char *pszDesc, PRTGCPTR pGCPtr)
370{
371 LogFlow(("MMR3HyperMapHCPhys: pvR3=%p pvR0=%p HCPhys=%RHp cb=%d pszDesc=%p:{%s} pGCPtr=%p\n", pvR3, pvR0, HCPhys, (int)cb, pszDesc, pszDesc, pGCPtr));
372
373 /*
374 * Validate input.
375 */
376 AssertReturn(RT_ALIGN_P(pvR3, PAGE_SIZE) == pvR3, VERR_INVALID_PARAMETER);
377 AssertReturn(RT_ALIGN_T(pvR0, PAGE_SIZE, RTR0PTR) == pvR0, VERR_INVALID_PARAMETER);
378 AssertReturn(RT_ALIGN_T(HCPhys, PAGE_SIZE, RTHCPHYS) == HCPhys, VERR_INVALID_PARAMETER);
379 AssertReturn(pszDesc && *pszDesc, VERR_INVALID_PARAMETER);
380
381 /*
382 * Add the memory to the hypervisor area.
383 */
384 uint32_t cbAligned = RT_ALIGN_32(cb, PAGE_SIZE);
385 AssertReturn(cbAligned >= cb, VERR_INVALID_PARAMETER);
386 RTGCPTR GCPtr;
387 PMMLOOKUPHYPER pLookup;
388 int rc = mmR3HyperMap(pVM, cbAligned, pszDesc, &GCPtr, &pLookup);
389 if (RT_SUCCESS(rc))
390 {
391 pLookup->enmType = MMLOOKUPHYPERTYPE_HCPHYS;
392 pLookup->u.HCPhys.pvR3 = pvR3;
393 pLookup->u.HCPhys.pvR0 = pvR0;
394 pLookup->u.HCPhys.HCPhys = HCPhys;
395
396 /*
397 * Update the page table.
398 */
399 if (pVM->mm.s.fPGMInitialized)
400 rc = PGMMap(pVM, GCPtr, HCPhys, cbAligned, 0);
401 if (RT_SUCCESS(rc))
402 *pGCPtr = GCPtr;
403 }
404 return rc;
405}
406
407
408/**
409 * Maps contiguous GC physical memory into the hypervisor region in the GC.
410 *
411 * @return VBox status code.
412 *
413 * @param pVM VM handle.
414 * @param GCPhys Guest context physical address of the memory to be mapped. Must be page aligned!
415 * @param cb Size of the memory. Will be rounded up to nearest page.
416 * @param pszDesc Mapping description.
417 * @param pGCPtr Where to store the GC address.
418 */
419VMMR3DECL(int) MMR3HyperMapGCPhys(PVM pVM, RTGCPHYS GCPhys, size_t cb, const char *pszDesc, PRTGCPTR pGCPtr)
420{
421 LogFlow(("MMR3HyperMapGCPhys: GCPhys=%RGp cb=%d pszDesc=%p:{%s} pGCPtr=%p\n", GCPhys, (int)cb, pszDesc, pszDesc, pGCPtr));
422
423 /*
424 * Validate input.
425 */
426 AssertReturn(RT_ALIGN_T(GCPhys, PAGE_SIZE, RTGCPHYS) == GCPhys, VERR_INVALID_PARAMETER);
427 AssertReturn(pszDesc && *pszDesc, VERR_INVALID_PARAMETER);
428
429 /*
430 * Add the memory to the hypervisor area.
431 */
432 cb = RT_ALIGN_Z(cb, PAGE_SIZE);
433 RTGCPTR GCPtr;
434 PMMLOOKUPHYPER pLookup;
435 int rc = mmR3HyperMap(pVM, cb, pszDesc, &GCPtr, &pLookup);
436 if (RT_SUCCESS(rc))
437 {
438 pLookup->enmType = MMLOOKUPHYPERTYPE_GCPHYS;
439 pLookup->u.GCPhys.GCPhys = GCPhys;
440
441 /*
442 * Update the page table.
443 */
444 for (unsigned off = 0; off < cb; off += PAGE_SIZE)
445 {
446 RTHCPHYS HCPhys;
447 rc = PGMPhysGCPhys2HCPhys(pVM, GCPhys + off, &HCPhys);
448 AssertRC(rc);
449 if (RT_FAILURE(rc))
450 {
451 AssertMsgFailed(("rc=%Rrc GCPhys=%RGp off=%#x %s\n", rc, GCPhys, off, pszDesc));
452 break;
453 }
454 if (pVM->mm.s.fPGMInitialized)
455 {
456 rc = PGMMap(pVM, GCPtr + off, HCPhys, PAGE_SIZE, 0);
457 AssertRC(rc);
458 if (RT_FAILURE(rc))
459 {
460 AssertMsgFailed(("rc=%Rrc GCPhys=%RGp off=%#x %s\n", rc, GCPhys, off, pszDesc));
461 break;
462 }
463 }
464 }
465
466 if (RT_SUCCESS(rc) && pGCPtr)
467 *pGCPtr = GCPtr;
468 }
469 return rc;
470}
471
472
473/**
474 * Maps a portion of an MMIO2 region into the hypervisor region.
475 *
476 * Callers of this API must never deregister the MMIO2 region before the
477 * VM is powered off. If this becomes a requirement MMR3HyperUnmapMMIO2
478 * API will be needed to perform cleanups.
479 *
480 * @return VBox status code.
481 *
482 * @param pVM Pointer to the shared VM structure.
483 * @param pDevIns The device owning the MMIO2 memory.
484 * @param iRegion The region.
485 * @param off The offset into the region. Will be rounded down to closest page boundrary.
486 * @param cb The number of bytes to map. Will be rounded up to the closest page boundrary.
487 * @param pszDesc Mapping description.
488 * @param pRCPtr Where to store the RC address.
489 */
490VMMR3DECL(int) MMR3HyperMapMMIO2(PVM pVM, PPDMDEVINS pDevIns, uint32_t iRegion, RTGCPHYS off, RTGCPHYS cb,
491 const char *pszDesc, PRTRCPTR pRCPtr)
492{
493 LogFlow(("MMR3HyperMapMMIO2: pDevIns=%p iRegion=%#x off=%RGp cb=%RGp pszDesc=%p:{%s} pRCPtr=%p\n",
494 pDevIns, iRegion, off, cb, pszDesc, pszDesc, pRCPtr));
495 int rc;
496
497 /*
498 * Validate input.
499 */
500 AssertReturn(pszDesc && *pszDesc, VERR_INVALID_PARAMETER);
501 AssertReturn(off + cb > off, VERR_INVALID_PARAMETER);
502 uint32_t const offPage = off & PAGE_OFFSET_MASK;
503 off &= ~(RTGCPHYS)PAGE_OFFSET_MASK;
504 cb += offPage;
505 cb = RT_ALIGN_Z(cb, PAGE_SIZE);
506 const RTGCPHYS offEnd = off + cb;
507 AssertReturn(offEnd > off, VERR_INVALID_PARAMETER);
508 for (RTGCPHYS offCur = off; offCur < offEnd; offCur += PAGE_SIZE)
509 {
510 RTHCPHYS HCPhys;
511 rc = PGMR3PhysMMIO2GetHCPhys(pVM, pDevIns, iRegion, offCur, &HCPhys);
512 AssertMsgRCReturn(rc, ("rc=%Rrc - iRegion=%d off=%RGp\n", rc, iRegion, off), rc);
513 }
514
515 /*
516 * Add the memory to the hypervisor area.
517 */
518 RTGCPTR GCPtr;
519 PMMLOOKUPHYPER pLookup;
520 rc = mmR3HyperMap(pVM, cb, pszDesc, &GCPtr, &pLookup);
521 if (RT_SUCCESS(rc))
522 {
523 pLookup->enmType = MMLOOKUPHYPERTYPE_MMIO2;
524 pLookup->u.MMIO2.pDevIns = pDevIns;
525 pLookup->u.MMIO2.iRegion = iRegion;
526 pLookup->u.MMIO2.off = off;
527
528 /*
529 * Update the page table.
530 */
531 if (pVM->mm.s.fPGMInitialized)
532 {
533 for (RTGCPHYS offCur = off; offCur < offEnd; offCur += PAGE_SIZE)
534 {
535 RTHCPHYS HCPhys;
536 rc = PGMR3PhysMMIO2GetHCPhys(pVM, pDevIns, iRegion, offCur, &HCPhys);
537 AssertRCReturn(rc, VERR_INTERNAL_ERROR);
538 rc = PGMMap(pVM, GCPtr + (offCur - off), HCPhys, PAGE_SIZE, 0);
539 if (RT_FAILURE(rc))
540 {
541 AssertMsgFailed(("rc=%Rrc offCur=%RGp %s\n", rc, offCur, pszDesc));
542 break;
543 }
544 }
545 }
546
547 if (RT_SUCCESS(rc))
548 {
549 GCPtr |= offPage;
550 *pRCPtr = GCPtr;
551 AssertLogRelReturn(*pRCPtr == GCPtr, VERR_INTERNAL_ERROR);
552 }
553 }
554 return rc;
555}
556
557
558/**
559 * Maps locked R3 virtual memory into the hypervisor region in the GC.
560 *
561 * @return VBox status code.
562 *
563 * @param pVM VM handle.
564 * @param pvR3 The ring-3 address of the memory, must be page aligned.
565 * @param pvR0 The ring-0 address of the memory, must be page aligned. (optional)
566 * @param cPages The number of pages.
567 * @param paPages The page descriptors.
568 * @param pszDesc Mapping description.
569 * @param pGCPtr Where to store the GC address corresponding to pvR3.
570 */
571VMMR3DECL(int) MMR3HyperMapPages(PVM pVM, void *pvR3, RTR0PTR pvR0, size_t cPages, PCSUPPAGE paPages, const char *pszDesc, PRTGCPTR pGCPtr)
572{
573 LogFlow(("MMR3HyperMapPages: pvR3=%p pvR0=%p cPages=%zu paPages=%p pszDesc=%p:{%s} pGCPtr=%p\n",
574 pvR3, pvR0, cPages, paPages, pszDesc, pszDesc, pGCPtr));
575
576 /*
577 * Validate input.
578 */
579 AssertPtrReturn(pvR3, VERR_INVALID_POINTER);
580 AssertPtrReturn(paPages, VERR_INVALID_POINTER);
581 AssertReturn(cPages > 0, VERR_PAGE_COUNT_OUT_OF_RANGE);
582 AssertReturn(cPages <= VBOX_MAX_ALLOC_PAGE_COUNT, VERR_PAGE_COUNT_OUT_OF_RANGE);
583 AssertPtrReturn(pszDesc, VERR_INVALID_POINTER);
584 AssertReturn(*pszDesc, VERR_INVALID_PARAMETER);
585 AssertPtrReturn(pGCPtr, VERR_INVALID_PARAMETER);
586
587 /*
588 * Add the memory to the hypervisor area.
589 */
590 RTGCPTR GCPtr;
591 PMMLOOKUPHYPER pLookup;
592 int rc = mmR3HyperMap(pVM, cPages << PAGE_SHIFT, pszDesc, &GCPtr, &pLookup);
593 if (RT_SUCCESS(rc))
594 {
595 /*
596 * Copy the physical page addresses and tell PGM about them.
597 */
598 PRTHCPHYS paHCPhysPages = (PRTHCPHYS)MMR3HeapAlloc(pVM, MM_TAG_MM, sizeof(RTHCPHYS) * cPages);
599 if (paHCPhysPages)
600 {
601 for (size_t i = 0; i < cPages; i++)
602 {
603 AssertReleaseMsgReturn(paPages[i].Phys != 0 && paPages[i].Phys != NIL_RTHCPHYS && !(paPages[i].Phys & PAGE_OFFSET_MASK),
604 ("i=%#zx Phys=%RHp %s\n", i, paPages[i].Phys, pszDesc),
605 VERR_INTERNAL_ERROR);
606 paHCPhysPages[i] = paPages[i].Phys;
607 }
608
609 if (pVM->mm.s.fPGMInitialized)
610 {
611 for (size_t i = 0; i < cPages; i++)
612 {
613 rc = PGMMap(pVM, GCPtr + (i << PAGE_SHIFT), paHCPhysPages[i], PAGE_SIZE, 0);
614 AssertRCBreak(rc);
615 }
616 }
617 if (RT_SUCCESS(rc))
618 {
619 pLookup->enmType = MMLOOKUPHYPERTYPE_LOCKED;
620 pLookup->u.Locked.pvR3 = pvR3;
621 pLookup->u.Locked.pvR0 = pvR0;
622 pLookup->u.Locked.paHCPhysPages = paHCPhysPages;
623
624 /* done. */
625 *pGCPtr = GCPtr;
626 return rc;
627 }
628 /* Don't care about failure clean, we're screwed if this fails anyway. */
629 }
630 }
631
632 return rc;
633}
634
635
636/**
637 * Reserves a hypervisor memory area.
638 * Most frequent usage is fence pages and dynamically mappings like the guest PD and PDPT.
639 *
640 * @return VBox status code.
641 *
642 * @param pVM VM handle.
643 * @param cb Size of the memory. Will be rounded up to nearest page.
644 * @param pszDesc Mapping description.
645 * @param pGCPtr Where to store the assigned GC address. Optional.
646 */
647VMMR3DECL(int) MMR3HyperReserve(PVM pVM, unsigned cb, const char *pszDesc, PRTGCPTR pGCPtr)
648{
649 LogFlow(("MMR3HyperMapHCRam: cb=%d pszDesc=%p:{%s} pGCPtr=%p\n", (int)cb, pszDesc, pszDesc, pGCPtr));
650
651 /*
652 * Validate input.
653 */
654 if ( cb <= 0
655 || !pszDesc
656 || !*pszDesc)
657 {
658 AssertMsgFailed(("Invalid parameter\n"));
659 return VERR_INVALID_PARAMETER;
660 }
661
662 /*
663 * Add the memory to the hypervisor area.
664 */
665 RTGCPTR GCPtr;
666 PMMLOOKUPHYPER pLookup;
667 int rc = mmR3HyperMap(pVM, cb, pszDesc, &GCPtr, &pLookup);
668 if (RT_SUCCESS(rc))
669 {
670 pLookup->enmType = MMLOOKUPHYPERTYPE_DYNAMIC;
671 if (pGCPtr)
672 *pGCPtr = GCPtr;
673 return VINF_SUCCESS;
674 }
675 return rc;
676}
677
678
679/**
680 * Adds memory to the hypervisor memory arena.
681 *
682 * @return VBox status code.
683 * @param pVM The VM handle.
684 * @param cb Size of the memory. Will be rounded up to neares page.
685 * @param pszDesc The description of the memory.
686 * @param pGCPtr Where to store the GC address.
687 * @param ppLookup Where to store the pointer to the lookup record.
688 * @remark We assume the threading structure of VBox imposes natural
689 * serialization of most functions, this one included.
690 */
691static int mmR3HyperMap(PVM pVM, const size_t cb, const char *pszDesc, PRTGCPTR pGCPtr, PMMLOOKUPHYPER *ppLookup)
692{
693 /*
694 * Validate input.
695 */
696 const uint32_t cbAligned = RT_ALIGN_32(cb, PAGE_SIZE);
697 AssertReturn(cbAligned >= cb, VERR_INVALID_PARAMETER);
698 if (pVM->mm.s.offHyperNextStatic + cbAligned >= pVM->mm.s.cbHyperArea) /* don't use the last page, it's a fence. */
699 {
700 AssertMsgFailed(("Out of static mapping space in the HMA! offHyperAreaGC=%x cbAligned=%x cbHyperArea=%x\n",
701 pVM->mm.s.offHyperNextStatic, cbAligned, pVM->mm.s.cbHyperArea));
702 return VERR_NO_MEMORY;
703 }
704
705 /*
706 * Allocate lookup record.
707 */
708 PMMLOOKUPHYPER pLookup;
709 int rc = MMHyperAlloc(pVM, sizeof(*pLookup), 1, MM_TAG_MM, (void **)&pLookup);
710 if (RT_SUCCESS(rc))
711 {
712 /*
713 * Initialize it and insert it.
714 */
715 pLookup->offNext = pVM->mm.s.offLookupHyper;
716 pLookup->cb = cbAligned;
717 pLookup->off = pVM->mm.s.offHyperNextStatic;
718 pVM->mm.s.offLookupHyper = (uint8_t *)pLookup - (uint8_t *)pVM->mm.s.pHyperHeapR3;
719 if (pLookup->offNext != (int32_t)NIL_OFFSET)
720 pLookup->offNext -= pVM->mm.s.offLookupHyper;
721 pLookup->enmType = MMLOOKUPHYPERTYPE_INVALID;
722 memset(&pLookup->u, 0xff, sizeof(pLookup->u));
723 pLookup->pszDesc = pszDesc;
724
725 /* Mapping. */
726 *pGCPtr = pVM->mm.s.pvHyperAreaGC + pVM->mm.s.offHyperNextStatic;
727 pVM->mm.s.offHyperNextStatic += cbAligned;
728
729 /* Return pointer. */
730 *ppLookup = pLookup;
731 }
732
733 AssertRC(rc);
734 LogFlow(("mmR3HyperMap: returns %Rrc *pGCPtr=%RGv\n", rc, *pGCPtr));
735 return rc;
736}
737
738
739/**
740 * Allocates a new heap.
741 *
742 * @returns VBox status code.
743 * @param pVM The VM handle.
744 * @param cb The size of the new heap.
745 * @param ppHeap Where to store the heap pointer on successful return.
746 * @param pR0PtrHeap Where to store the ring-0 address of the heap on
747 * success.
748 */
749static int mmR3HyperHeapCreate(PVM pVM, const size_t cb, PMMHYPERHEAP *ppHeap, PRTR0PTR pR0PtrHeap)
750{
751 /*
752 * Allocate the hypervisor heap.
753 */
754 const uint32_t cbAligned = RT_ALIGN_32(cb, PAGE_SIZE);
755 AssertReturn(cbAligned >= cb, VERR_INVALID_PARAMETER);
756 uint32_t const cPages = cbAligned >> PAGE_SHIFT;
757 PSUPPAGE paPages = (PSUPPAGE)MMR3HeapAlloc(pVM, MM_TAG_MM, cPages * sizeof(paPages[0]));
758 if (!paPages)
759 return VERR_NO_MEMORY;
760 void *pv;
761 RTR0PTR pvR0 = NIL_RTR0PTR;
762 int rc = SUPR3PageAllocEx(cPages,
763 0 /*fFlags*/,
764 &pv,
765#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
766 VMMIsHwVirtExtForced(pVM) ? &pvR0 : NULL,
767#else
768 NULL,
769#endif
770 paPages);
771 if (RT_SUCCESS(rc))
772 {
773#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
774 if (!VMMIsHwVirtExtForced(pVM))
775 pvR0 = NIL_RTR0PTR;
776#else
777 pvR0 = (uintptr_t)pv;
778#endif
779 memset(pv, 0, cbAligned);
780
781 /*
782 * Initialize the heap and first free chunk.
783 */
784 PMMHYPERHEAP pHeap = (PMMHYPERHEAP)pv;
785 pHeap->u32Magic = MMHYPERHEAP_MAGIC;
786 pHeap->pbHeapR3 = (uint8_t *)pHeap + MMYPERHEAP_HDR_SIZE;
787 pHeap->pbHeapR0 = pvR0 != NIL_RTR0PTR ? pvR0 + MMYPERHEAP_HDR_SIZE : NIL_RTR0PTR;
788 //pHeap->pbHeapRC = 0; // set by mmR3HyperHeapMap()
789 pHeap->pVMR3 = pVM;
790 pHeap->pVMR0 = pVM->pVMR0;
791 pHeap->pVMRC = pVM->pVMRC;
792 pHeap->cbHeap = cbAligned - MMYPERHEAP_HDR_SIZE;
793 pHeap->cbFree = pHeap->cbHeap - sizeof(MMHYPERCHUNK);
794 //pHeap->offFreeHead = 0;
795 //pHeap->offFreeTail = 0;
796 pHeap->offPageAligned = pHeap->cbHeap;
797 //pHeap->HyperHeapStatTree = 0;
798 pHeap->paPages = paPages;
799
800 PMMHYPERCHUNKFREE pFree = (PMMHYPERCHUNKFREE)pHeap->pbHeapR3;
801 pFree->cb = pHeap->cbFree;
802 //pFree->core.offNext = 0;
803 MMHYPERCHUNK_SET_TYPE(&pFree->core, MMHYPERCHUNK_FLAGS_FREE);
804 pFree->core.offHeap = -(int32_t)MMYPERHEAP_HDR_SIZE;
805 //pFree->offNext = 0;
806 //pFree->offPrev = 0;
807
808 STAMR3Register(pVM, &pHeap->cbHeap, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, "/MM/HyperHeap/cbHeap", STAMUNIT_BYTES, "The heap size.");
809 STAMR3Register(pVM, &pHeap->cbFree, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, "/MM/HyperHeap/cbFree", STAMUNIT_BYTES, "The free space.");
810
811 *ppHeap = pHeap;
812 *pR0PtrHeap = pvR0;
813 return VINF_SUCCESS;
814 }
815 AssertMsgFailed(("SUPR3PageAllocEx(%d,,,,) -> %Rrc\n", cbAligned >> PAGE_SHIFT, rc));
816
817 *ppHeap = NULL;
818 return rc;
819}
820
821/**
822 * Allocates a new heap.
823 */
824static int mmR3HyperHeapMap(PVM pVM, PMMHYPERHEAP pHeap, PRTGCPTR ppHeapGC)
825{
826 Assert(RT_ALIGN_Z(pHeap->cbHeap + MMYPERHEAP_HDR_SIZE, PAGE_SIZE) == pHeap->cbHeap + MMYPERHEAP_HDR_SIZE);
827 Assert(pHeap->paPages);
828 int rc = MMR3HyperMapPages(pVM,
829 pHeap,
830 pHeap->pbHeapR0 != NIL_RTR0PTR ? pHeap->pbHeapR0 - MMYPERHEAP_HDR_SIZE : NIL_RTR0PTR,
831 (pHeap->cbHeap + MMYPERHEAP_HDR_SIZE) >> PAGE_SHIFT,
832 pHeap->paPages,
833 "Heap", ppHeapGC);
834 if (RT_SUCCESS(rc))
835 {
836 pHeap->pVMRC = pVM->pVMRC;
837 pHeap->pbHeapRC = *ppHeapGC + MMYPERHEAP_HDR_SIZE;
838 /* Reserve a page for fencing. */
839 MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
840
841 /* We won't need these any more. */
842 MMR3HeapFree(pHeap->paPages);
843 pHeap->paPages = NULL;
844 }
845 return rc;
846}
847
848
849/**
850 * Allocates memory in the Hypervisor (GC VMM) area which never will
851 * be freed and doesn't have any offset based relation to other heap blocks.
852 *
853 * The latter means that two blocks allocated by this API will not have the
854 * same relative position to each other in GC and HC. In short, never use
855 * this API for allocating nodes for an offset based AVL tree!
856 *
857 * The returned memory is of course zeroed.
858 *
859 * @returns VBox status code.
860 * @param pVM The VM to operate on.
861 * @param cb Number of bytes to allocate.
862 * @param uAlignment Required memory alignment in bytes.
863 * Values are 0,8,16,32 and PAGE_SIZE.
864 * 0 -> default alignment, i.e. 8 bytes.
865 * @param enmTag The statistics tag.
866 * @param ppv Where to store the address to the allocated
867 * memory.
868 * @remark This is assumed not to be used at times when serialization is required.
869 */
870VMMR3DECL(int) MMR3HyperAllocOnceNoRel(PVM pVM, size_t cb, unsigned uAlignment, MMTAG enmTag, void **ppv)
871{
872 AssertMsg(cb >= 8, ("Hey! Do you really mean to allocate less than 8 bytes?! cb=%d\n", cb));
873
874 /*
875 * Choose between allocating a new chunk of HMA memory
876 * and the heap. We will only do BIG allocations from HMA and
877 * only at creation time.
878 */
879 if ( ( cb < _64K
880 && ( uAlignment != PAGE_SIZE
881 || cb < 48*_1K))
882 || VMR3GetState(pVM) != VMSTATE_CREATING)
883 {
884 int rc = MMHyperAlloc(pVM, cb, uAlignment, enmTag, ppv);
885 if ( rc != VERR_MM_HYPER_NO_MEMORY
886 || cb <= 8*_1K)
887 {
888 Log2(("MMR3HyperAllocOnceNoRel: cb=%#zx uAlignment=%#x returns %Rrc and *ppv=%p\n",
889 cb, uAlignment, rc, *ppv));
890 return rc;
891 }
892 }
893
894 /*
895 * Validate alignment.
896 */
897 switch (uAlignment)
898 {
899 case 0:
900 case 8:
901 case 16:
902 case 32:
903 case PAGE_SIZE:
904 break;
905 default:
906 AssertMsgFailed(("Invalid alignment %u\n", uAlignment));
907 return VERR_INVALID_PARAMETER;
908 }
909
910 /*
911 * Allocate the pages and map them into HMA space.
912 */
913 uint32_t const cbAligned = RT_ALIGN_32(cb, PAGE_SIZE);
914 AssertReturn(cbAligned >= cb, VERR_INVALID_PARAMETER);
915 uint32_t const cPages = cbAligned >> PAGE_SHIFT;
916 PSUPPAGE paPages = (PSUPPAGE)RTMemTmpAlloc(cPages * sizeof(paPages[0]));
917 if (!paPages)
918 return VERR_NO_TMP_MEMORY;
919 void *pvPages;
920 RTR0PTR pvR0 = NIL_RTR0PTR;
921 int rc = SUPR3PageAllocEx(cPages,
922 0 /*fFlags*/,
923 &pvPages,
924#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
925 VMMIsHwVirtExtForced(pVM) ? &pvR0 : NULL,
926#else
927 NULL,
928#endif
929 paPages);
930 if (RT_SUCCESS(rc))
931 {
932#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
933 if (!VMMIsHwVirtExtForced(pVM))
934 pvR0 = NIL_RTR0PTR;
935#else
936 pvR0 = (uintptr_t)pvPages;
937#endif
938 memset(pvPages, 0, cbAligned);
939
940 RTGCPTR GCPtr;
941 rc = MMR3HyperMapPages(pVM,
942 pvPages,
943 pvR0,
944 cPages,
945 paPages,
946 MMR3HeapAPrintf(pVM, MM_TAG_MM, "alloc once (%s)", mmR3GetTagName(enmTag)),
947 &GCPtr);
948 if (RT_SUCCESS(rc))
949 {
950 *ppv = pvPages;
951 Log2(("MMR3HyperAllocOnceNoRel: cbAligned=%#x uAlignment=%#x returns VINF_SUCCESS and *ppv=%p\n",
952 cbAligned, uAlignment, *ppv));
953 MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
954 return rc;
955 }
956 AssertMsgFailed(("Failed to allocate %zd bytes! %Rrc\n", cbAligned, rc));
957 SUPR3PageFreeEx(pvPages, cPages);
958
959
960 /*
961 * HACK ALERT! Try allocate it off the heap so that we don't freak
962 * out during vga/vmmdev mmio2 allocation with certain ram sizes.
963 */
964 /** @todo make a proper fix for this so we will never end up in this kind of situation! */
965 Log(("MMR3HyperAllocOnceNoRel: MMR3HyperMapHCRam failed with rc=%Rrc, try MMHyperAlloc(,%#x,,) instead\n", rc, cb));
966 int rc2 = MMHyperAlloc(pVM, cb, uAlignment, enmTag, ppv);
967 if (RT_SUCCESS(rc2))
968 {
969 Log2(("MMR3HyperAllocOnceNoRel: cb=%#x uAlignment=%#x returns %Rrc and *ppv=%p\n",
970 cb, uAlignment, rc, *ppv));
971 return rc;
972 }
973 }
974 else
975 AssertMsgFailed(("Failed to allocate %zd bytes! %Rrc\n", cbAligned, rc));
976
977 if (rc == VERR_NO_MEMORY)
978 rc = VERR_MM_HYPER_NO_MEMORY;
979 LogRel(("MMR3HyperAllocOnceNoRel: cb=%#zx uAlignment=%#x returns %Rrc\n", cb, uAlignment, rc));
980 return rc;
981}
982
983
984/**
985 * Lookus up a ring-3 pointer to HMA.
986 *
987 * @returns The lookup record on success, NULL on failure.
988 * @param pVM The VM handle.
989 * @param pvR3 The ring-3 address to look up.
990 */
991DECLINLINE(PMMLOOKUPHYPER) mmR3HyperLookupR3(PVM pVM, void *pvR3)
992{
993 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.pHyperHeapR3 + pVM->mm.s.offLookupHyper);
994 for (;;)
995 {
996 switch (pLookup->enmType)
997 {
998 case MMLOOKUPHYPERTYPE_LOCKED:
999 {
1000 unsigned off = (uint8_t *)pvR3 - (uint8_t *)pLookup->u.Locked.pvR3;
1001 if (off < pLookup->cb)
1002 return pLookup;
1003 break;
1004 }
1005
1006 case MMLOOKUPHYPERTYPE_HCPHYS:
1007 {
1008 unsigned off = (uint8_t *)pvR3 - (uint8_t *)pLookup->u.HCPhys.pvR3;
1009 if (off < pLookup->cb)
1010 return pLookup;
1011 break;
1012 }
1013
1014 case MMLOOKUPHYPERTYPE_GCPHYS:
1015 case MMLOOKUPHYPERTYPE_MMIO2:
1016 case MMLOOKUPHYPERTYPE_DYNAMIC:
1017 /** @todo ? */
1018 break;
1019
1020 default:
1021 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
1022 return NULL;
1023 }
1024
1025 /* next */
1026 if ((unsigned)pLookup->offNext == NIL_OFFSET)
1027 return NULL;
1028 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
1029 }
1030}
1031
1032
1033/**
1034 * Set / unset guard status on one or more hyper heap pages.
1035 *
1036 * @returns VBox status code (first failure).
1037 * @param pVM The VM handle.
1038 * @param pvStart The hyper heap page address. Must be page
1039 * aligned.
1040 * @param cb The number of bytes. Must be page aligned.
1041 * @param fSet Wheter to set or unset guard page status.
1042 */
1043VMMR3DECL(int) MMR3HyperSetGuard(PVM pVM, void *pvStart, size_t cb, bool fSet)
1044{
1045 /*
1046 * Validate input.
1047 */
1048 AssertReturn(!((uintptr_t)pvStart & PAGE_OFFSET_MASK), VERR_INVALID_POINTER);
1049 AssertReturn(!(cb & PAGE_OFFSET_MASK), VERR_INVALID_PARAMETER);
1050 PMMLOOKUPHYPER pLookup = mmR3HyperLookupR3(pVM, pvStart);
1051 AssertReturn(pLookup, VERR_INVALID_PARAMETER);
1052 AssertReturn(pLookup->enmType == MMLOOKUPHYPERTYPE_LOCKED, VERR_INVALID_PARAMETER);
1053
1054 /*
1055 * Get down to business.
1056 * Note! We quietly ignore errors from the support library since the
1057 * protection stuff isn't possible to implement on all platforms.
1058 */
1059 uint8_t *pbR3 = (uint8_t *)pLookup->u.Locked.pvR3;
1060#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
1061 RTR0PTR R0Ptr = VMMIsHwVirtExtForced(pVM) ? pLookup->u.Locked.pvR0 : NIL_RTR0PTR;
1062#else
1063 RTR0PTR R0Ptr = NIL_RTR0PTR; /* ring-0 and ring-3 uses the same mapping. */
1064#endif
1065 uint32_t off = (uint32_t)((uint8_t *)pvStart - pbR3);
1066 int rc;
1067 if (fSet)
1068 {
1069 rc = PGMMapSetPage(pVM, MMHyperR3ToRC(pVM, pvStart), cb, 0);
1070 SUPR3PageProtect(pbR3, R0Ptr, off, cb, RTMEM_PROT_NONE);
1071 }
1072 else
1073 {
1074 rc = PGMMapSetPage(pVM, MMHyperR3ToRC(pVM, pvStart), cb, X86_PTE_P | X86_PTE_A | X86_PTE_D | X86_PTE_RW);
1075 SUPR3PageProtect(pbR3, R0Ptr, off, cb, RTMEM_PROT_READ | RTMEM_PROT_WRITE);
1076 }
1077 return rc;
1078}
1079
1080
1081/**
1082 * Convert hypervisor HC virtual address to HC physical address.
1083 *
1084 * @returns HC physical address.
1085 * @param pVM VM Handle
1086 * @param pvR3 Host context virtual address.
1087 */
1088VMMR3DECL(RTHCPHYS) MMR3HyperHCVirt2HCPhys(PVM pVM, void *pvR3)
1089{
1090 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.pHyperHeapR3 + pVM->mm.s.offLookupHyper);
1091 for (;;)
1092 {
1093 switch (pLookup->enmType)
1094 {
1095 case MMLOOKUPHYPERTYPE_LOCKED:
1096 {
1097 unsigned off = (uint8_t *)pvR3 - (uint8_t *)pLookup->u.Locked.pvR3;
1098 if (off < pLookup->cb)
1099 return pLookup->u.Locked.paHCPhysPages[off >> PAGE_SHIFT] | (off & PAGE_OFFSET_MASK);
1100 break;
1101 }
1102
1103 case MMLOOKUPHYPERTYPE_HCPHYS:
1104 {
1105 unsigned off = (uint8_t *)pvR3 - (uint8_t *)pLookup->u.HCPhys.pvR3;
1106 if (off < pLookup->cb)
1107 return pLookup->u.HCPhys.HCPhys + off;
1108 break;
1109 }
1110
1111 case MMLOOKUPHYPERTYPE_GCPHYS:
1112 case MMLOOKUPHYPERTYPE_MMIO2:
1113 case MMLOOKUPHYPERTYPE_DYNAMIC:
1114 /* can (or don't want to) convert these kind of records. */
1115 break;
1116
1117 default:
1118 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
1119 break;
1120 }
1121
1122 /* next */
1123 if ((unsigned)pLookup->offNext == NIL_OFFSET)
1124 break;
1125 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
1126 }
1127
1128 AssertMsgFailed(("pvR3=%p is not inside the hypervisor memory area!\n", pvR3));
1129 return NIL_RTHCPHYS;
1130}
1131
1132
1133#if 0 /* unused, not implemented */
1134/**
1135 * Convert hypervisor HC physical address to HC virtual address.
1136 *
1137 * @returns HC virtual address.
1138 * @param pVM VM Handle
1139 * @param HCPhys Host context physical address.
1140 */
1141VMMR3DECL(void *) MMR3HyperHCPhys2HCVirt(PVM pVM, RTHCPHYS HCPhys)
1142{
1143 void *pv;
1144 int rc = MMR3HyperHCPhys2HCVirtEx(pVM, HCPhys, &pv);
1145 if (RT_SUCCESS(rc))
1146 return pv;
1147 AssertMsgFailed(("Invalid address HCPhys=%x rc=%d\n", HCPhys, rc));
1148 return NULL;
1149}
1150
1151
1152/**
1153 * Convert hypervisor HC physical address to HC virtual address.
1154 *
1155 * @returns VBox status.
1156 * @param pVM VM Handle
1157 * @param HCPhys Host context physical address.
1158 * @param ppv Where to store the HC virtual address.
1159 */
1160VMMR3DECL(int) MMR3HyperHCPhys2HCVirtEx(PVM pVM, RTHCPHYS HCPhys, void **ppv)
1161{
1162 /*
1163 * Linear search.
1164 */
1165 /** @todo implement when actually used. */
1166 return VERR_INVALID_POINTER;
1167}
1168#endif /* unused, not implemented */
1169
1170
1171/**
1172 * Read hypervisor memory from GC virtual address.
1173 *
1174 * @returns VBox status.
1175 * @param pVM VM handle.
1176 * @param pvDst Destination address (HC of course).
1177 * @param GCPtr GC virtual address.
1178 * @param cb Number of bytes to read.
1179 *
1180 * @remarks For DBGF only.
1181 */
1182VMMR3DECL(int) MMR3HyperReadGCVirt(PVM pVM, void *pvDst, RTGCPTR GCPtr, size_t cb)
1183{
1184 if (GCPtr - pVM->mm.s.pvHyperAreaGC >= pVM->mm.s.cbHyperArea)
1185 return VERR_INVALID_PARAMETER;
1186 return PGMR3MapRead(pVM, pvDst, GCPtr, cb);
1187}
1188
1189/**
1190 * Release the MM hypervisor heap lock if owned by the current VCPU
1191 *
1192 * @param pVM The VM to operate on.
1193 */
1194VMMR3DECL(void) MMR3ReleaseOwnedLocks(PVM pVM)
1195{
1196 PMMHYPERHEAP pHeap = pVM->mm.s.CTX_SUFF(pHyperHeap);
1197
1198 while (pHeap && PDMCritSectIsOwner(&pHeap->Lock))
1199 PDMCritSectLeave(&pHeap->Lock);
1200}
1201
1202
1203/**
1204 * Info handler for 'hma', it dumps the list of lookup records for the hypervisor memory area.
1205 *
1206 * @param pVM The VM handle.
1207 * @param pHlp Callback functions for doing output.
1208 * @param pszArgs Argument string. Optional and specific to the handler.
1209 */
1210static DECLCALLBACK(void) mmR3HyperInfoHma(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
1211{
1212 pHlp->pfnPrintf(pHlp, "Hypervisor Memory Area (HMA) Layout: Base %RGv, 0x%08x bytes\n",
1213 pVM->mm.s.pvHyperAreaGC, pVM->mm.s.cbHyperArea);
1214
1215 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.pHyperHeapR3 + pVM->mm.s.offLookupHyper);
1216 for (;;)
1217 {
1218 switch (pLookup->enmType)
1219 {
1220 case MMLOOKUPHYPERTYPE_LOCKED:
1221 pHlp->pfnPrintf(pHlp, "%RGv-%RGv %RHv %RHv LOCKED %-*s %s\n",
1222 pLookup->off + pVM->mm.s.pvHyperAreaGC,
1223 pLookup->off + pVM->mm.s.pvHyperAreaGC + pLookup->cb,
1224 pLookup->u.Locked.pvR3,
1225 pLookup->u.Locked.pvR0,
1226 sizeof(RTHCPTR) * 2, "",
1227 pLookup->pszDesc);
1228 break;
1229
1230 case MMLOOKUPHYPERTYPE_HCPHYS:
1231 pHlp->pfnPrintf(pHlp, "%RGv-%RGv %RHv %RHv HCPHYS %RHp %s\n",
1232 pLookup->off + pVM->mm.s.pvHyperAreaGC,
1233 pLookup->off + pVM->mm.s.pvHyperAreaGC + pLookup->cb,
1234 pLookup->u.HCPhys.pvR3,
1235 pLookup->u.HCPhys.pvR0,
1236 pLookup->u.HCPhys.HCPhys,
1237 pLookup->pszDesc);
1238 break;
1239
1240 case MMLOOKUPHYPERTYPE_GCPHYS:
1241 pHlp->pfnPrintf(pHlp, "%RGv-%RGv %*s GCPHYS %RGp%*s %s\n",
1242 pLookup->off + pVM->mm.s.pvHyperAreaGC,
1243 pLookup->off + pVM->mm.s.pvHyperAreaGC + pLookup->cb,
1244 sizeof(RTHCPTR) * 2 * 2 + 1, "",
1245 pLookup->u.GCPhys.GCPhys, RT_ABS((int)(sizeof(RTHCPHYS) - sizeof(RTGCPHYS))) * 2, "",
1246 pLookup->pszDesc);
1247 break;
1248
1249 case MMLOOKUPHYPERTYPE_MMIO2:
1250 pHlp->pfnPrintf(pHlp, "%RGv-%RGv %*s MMIO2 %RGp%*s %s\n",
1251 pLookup->off + pVM->mm.s.pvHyperAreaGC,
1252 pLookup->off + pVM->mm.s.pvHyperAreaGC + pLookup->cb,
1253 sizeof(RTHCPTR) * 2 * 2 + 1, "",
1254 pLookup->u.MMIO2.off, RT_ABS((int)(sizeof(RTHCPHYS) - sizeof(RTGCPHYS))) * 2, "",
1255 pLookup->pszDesc);
1256 break;
1257
1258 case MMLOOKUPHYPERTYPE_DYNAMIC:
1259 pHlp->pfnPrintf(pHlp, "%RGv-%RGv %*s DYNAMIC %*s %s\n",
1260 pLookup->off + pVM->mm.s.pvHyperAreaGC,
1261 pLookup->off + pVM->mm.s.pvHyperAreaGC + pLookup->cb,
1262 sizeof(RTHCPTR) * 2 * 2 + 1, "",
1263 sizeof(RTHCPTR) * 2, "",
1264 pLookup->pszDesc);
1265 break;
1266
1267 default:
1268 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
1269 break;
1270 }
1271
1272 /* next */
1273 if ((unsigned)pLookup->offNext == NIL_OFFSET)
1274 break;
1275 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
1276 }
1277}
1278
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette