VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMR3/GMM.cpp@ 44464

Last change on this file since 44464 was 43045, checked in by vboxsync, 12 years ago

PGM: Employ the 4 unused PGMPHYSPAGE bits for checksumming shared pages in strict builds.
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1/* $Id: GMM.cpp 43045 2012-08-28 14:21:43Z vboxsync $ */
2/** @file
3 * GMM - Global Memory Manager, ring-3 request wrappers.
4 */
5
6/*
7 * Copyright (C) 2008-2012 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*******************************************************************************
20* Header Files *
21*******************************************************************************/
22#define LOG_GROUP LOG_GROUP_GMM
23#include <VBox/vmm/gmm.h>
24#include <VBox/vmm/vmm.h>
25#include <VBox/vmm/vm.h>
26#include <VBox/sup.h>
27#include <VBox/err.h>
28#include <VBox/param.h>
29
30#include <iprt/assert.h>
31#include <VBox/log.h>
32#include <iprt/mem.h>
33#include <iprt/string.h>
34
35
36/**
37 * @see GMMR0InitialReservation
38 */
39GMMR3DECL(int) GMMR3InitialReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages,
40 GMMOCPOLICY enmPolicy, GMMPRIORITY enmPriority)
41{
42 GMMINITIALRESERVATIONREQ Req;
43 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
44 Req.Hdr.cbReq = sizeof(Req);
45 Req.cBasePages = cBasePages;
46 Req.cShadowPages = cShadowPages;
47 Req.cFixedPages = cFixedPages;
48 Req.enmPolicy = enmPolicy;
49 Req.enmPriority = enmPriority;
50 return VMMR3CallR0(pVM, VMMR0_DO_GMM_INITIAL_RESERVATION, 0, &Req.Hdr);
51}
52
53
54/**
55 * @see GMMR0UpdateReservation
56 */
57GMMR3DECL(int) GMMR3UpdateReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages)
58{
59 GMMUPDATERESERVATIONREQ Req;
60 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
61 Req.Hdr.cbReq = sizeof(Req);
62 Req.cBasePages = cBasePages;
63 Req.cShadowPages = cShadowPages;
64 Req.cFixedPages = cFixedPages;
65 return VMMR3CallR0(pVM, VMMR0_DO_GMM_UPDATE_RESERVATION, 0, &Req.Hdr);
66}
67
68
69/**
70 * Prepares a GMMR0AllocatePages request.
71 *
72 * @returns VINF_SUCCESS or VERR_NO_TMP_MEMORY.
73 * @param pVM Pointer to the VM.
74 * @param[out] ppReq Where to store the pointer to the request packet.
75 * @param cPages The number of pages that's to be allocated.
76 * @param enmAccount The account to charge.
77 */
78GMMR3DECL(int) GMMR3AllocatePagesPrepare(PVM pVM, PGMMALLOCATEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount)
79{
80 uint32_t cb = RT_OFFSETOF(GMMALLOCATEPAGESREQ, aPages[cPages]);
81 PGMMALLOCATEPAGESREQ pReq = (PGMMALLOCATEPAGESREQ)RTMemTmpAllocZ(cb);
82 if (!pReq)
83 return VERR_NO_TMP_MEMORY;
84
85 pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
86 pReq->Hdr.cbReq = cb;
87 pReq->enmAccount = enmAccount;
88 pReq->cPages = cPages;
89 NOREF(pVM);
90 *ppReq = pReq;
91 return VINF_SUCCESS;
92}
93
94
95/**
96 * Performs a GMMR0AllocatePages request.
97 * This will call VMSetError on failure.
98 *
99 * @returns VBox status code.
100 * @param pVM Pointer to the VM.
101 * @param pReq Pointer to the request (returned by GMMR3AllocatePagesPrepare).
102 */
103GMMR3DECL(int) GMMR3AllocatePagesPerform(PVM pVM, PGMMALLOCATEPAGESREQ pReq)
104{
105 for (unsigned i = 0; ; i++)
106 {
107 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_ALLOCATE_PAGES, 0, &pReq->Hdr);
108 if (RT_SUCCESS(rc))
109 {
110#ifdef LOG_ENABLED
111 for (uint32_t iPage = 0; iPage < pReq->cPages; iPage++)
112 Log3(("GMMR3AllocatePagesPerform: idPage=%#x HCPhys=%RHp\n",
113 pReq->aPages[iPage].idPage, pReq->aPages[iPage].HCPhysGCPhys));
114#endif
115 return rc;
116 }
117 if (rc != VERR_GMM_SEED_ME)
118 return VMSetError(pVM, rc, RT_SRC_POS,
119 N_("GMMR0AllocatePages failed to allocate %u pages"),
120 pReq->cPages);
121 Assert(i < pReq->cPages);
122
123 /*
124 * Seed another chunk.
125 */
126 void *pvChunk;
127 rc = SUPR3PageAlloc(GMM_CHUNK_SIZE >> PAGE_SHIFT, &pvChunk);
128 if (RT_FAILURE(rc))
129 return VMSetError(pVM, rc, RT_SRC_POS,
130 N_("Out of memory (SUPR3PageAlloc) seeding a %u pages allocation request"),
131 pReq->cPages);
132
133 rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_SEED_CHUNK, (uintptr_t)pvChunk, NULL);
134 if (RT_FAILURE(rc))
135 return VMSetError(pVM, rc, RT_SRC_POS, N_("GMM seeding failed"));
136 }
137}
138
139
140/**
141 * Cleans up a GMMR0AllocatePages request.
142 * @param pReq Pointer to the request (returned by GMMR3AllocatePagesPrepare).
143 */
144GMMR3DECL(void) GMMR3AllocatePagesCleanup(PGMMALLOCATEPAGESREQ pReq)
145{
146 RTMemTmpFree(pReq);
147}
148
149
150/**
151 * Prepares a GMMR0FreePages request.
152 *
153 * @returns VINF_SUCCESS or VERR_NO_TMP_MEMORY.
154 * @param pVM Pointer to the VM.
155 * @param[out] ppReq Where to store the pointer to the request packet.
156 * @param cPages The number of pages that's to be freed.
157 * @param enmAccount The account to charge.
158 */
159GMMR3DECL(int) GMMR3FreePagesPrepare(PVM pVM, PGMMFREEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount)
160{
161 uint32_t cb = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[cPages]);
162 PGMMFREEPAGESREQ pReq = (PGMMFREEPAGESREQ)RTMemTmpAllocZ(cb);
163 if (!pReq)
164 return VERR_NO_TMP_MEMORY;
165
166 pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
167 pReq->Hdr.cbReq = cb;
168 pReq->enmAccount = enmAccount;
169 pReq->cPages = cPages;
170 NOREF(pVM);
171 *ppReq = pReq;
172 return VINF_SUCCESS;
173}
174
175
176/**
177 * Re-prepares a GMMR0FreePages request.
178 *
179 * @returns VINF_SUCCESS or VERR_NO_TMP_MEMORY.
180 * @param pVM Pointer to the VM.
181 * @param pReq A request buffer previously returned by
182 * GMMR3FreePagesPrepare().
183 * @param cPages The number of pages originally passed to
184 * GMMR3FreePagesPrepare().
185 * @param enmAccount The account to charge.
186 */
187GMMR3DECL(void) GMMR3FreePagesRePrep(PVM pVM, PGMMFREEPAGESREQ pReq, uint32_t cPages, GMMACCOUNT enmAccount)
188{
189 Assert(pReq->Hdr.u32Magic == SUPVMMR0REQHDR_MAGIC);
190 pReq->Hdr.cbReq = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[cPages]);
191 pReq->enmAccount = enmAccount;
192 pReq->cPages = cPages;
193 NOREF(pVM);
194}
195
196
197/**
198 * Performs a GMMR0FreePages request.
199 * This will call VMSetError on failure.
200 *
201 * @returns VBox status code.
202 * @param pVM Pointer to the VM.
203 * @param pReq Pointer to the request (returned by GMMR3FreePagesPrepare).
204 * @param cActualPages The number of pages actually freed.
205 */
206GMMR3DECL(int) GMMR3FreePagesPerform(PVM pVM, PGMMFREEPAGESREQ pReq, uint32_t cActualPages)
207{
208 /*
209 * Adjust the request if we ended up with fewer pages than anticipated.
210 */
211 if (cActualPages != pReq->cPages)
212 {
213 AssertReturn(cActualPages < pReq->cPages, VERR_GMM_ACTUAL_PAGES_IPE);
214 if (!cActualPages)
215 return VINF_SUCCESS;
216 pReq->cPages = cActualPages;
217 pReq->Hdr.cbReq = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[cActualPages]);
218 }
219
220 /*
221 * Do the job.
222 */
223 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_FREE_PAGES, 0, &pReq->Hdr);
224 if (RT_SUCCESS(rc))
225 return rc;
226 AssertRC(rc);
227 return VMSetError(pVM, rc, RT_SRC_POS,
228 N_("GMMR0FreePages failed to free %u pages"),
229 pReq->cPages);
230}
231
232
233/**
234 * Cleans up a GMMR0FreePages request.
235 * @param pReq Pointer to the request (returned by GMMR3FreePagesPrepare).
236 */
237GMMR3DECL(void) GMMR3FreePagesCleanup(PGMMFREEPAGESREQ pReq)
238{
239 RTMemTmpFree(pReq);
240}
241
242
243/**
244 * Frees allocated pages, for bailing out on failure.
245 *
246 * This will not call VMSetError on failure but will use AssertLogRel instead.
247 *
248 * @param pVM Pointer to the VM.
249 * @param pAllocReq The allocation request to undo.
250 */
251GMMR3DECL(void) GMMR3FreeAllocatedPages(PVM pVM, GMMALLOCATEPAGESREQ const *pAllocReq)
252{
253 uint32_t cb = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[pAllocReq->cPages]);
254 PGMMFREEPAGESREQ pReq = (PGMMFREEPAGESREQ)RTMemTmpAllocZ(cb);
255 AssertLogRelReturnVoid(pReq);
256
257 pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
258 pReq->Hdr.cbReq = cb;
259 pReq->enmAccount = pAllocReq->enmAccount;
260 pReq->cPages = pAllocReq->cPages;
261 uint32_t iPage = pAllocReq->cPages;
262 while (iPage-- > 0)
263 {
264 Assert(pAllocReq->aPages[iPage].idPage != NIL_GMM_PAGEID);
265 pReq->aPages[iPage].idPage = pAllocReq->aPages[iPage].idPage;
266 }
267
268 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_FREE_PAGES, 0, &pReq->Hdr);
269 AssertLogRelRC(rc);
270
271 RTMemTmpFree(pReq);
272}
273
274
275/**
276 * @see GMMR0BalloonedPages
277 */
278GMMR3DECL(int) GMMR3BalloonedPages(PVM pVM, GMMBALLOONACTION enmAction, uint32_t cBalloonedPages)
279{
280 GMMBALLOONEDPAGESREQ Req;
281 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
282 Req.Hdr.cbReq = sizeof(Req);
283 Req.enmAction = enmAction;
284 Req.cBalloonedPages = cBalloonedPages;
285
286 return VMMR3CallR0(pVM, VMMR0_DO_GMM_BALLOONED_PAGES, 0, &Req.Hdr);
287}
288
289
290/**
291 * @see GMMR0QueryVMMMemoryStatsReq
292 */
293GMMR3DECL(int) GMMR3QueryHypervisorMemoryStats(PVM pVM, uint64_t *pcTotalAllocPages, uint64_t *pcTotalFreePages, uint64_t *pcTotalBalloonPages, uint64_t *puTotalBalloonSize)
294{
295 GMMMEMSTATSREQ Req;
296 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
297 Req.Hdr.cbReq = sizeof(Req);
298 Req.cAllocPages = 0;
299 Req.cFreePages = 0;
300 Req.cBalloonedPages = 0;
301 Req.cSharedPages = 0;
302
303 *pcTotalAllocPages = 0;
304 *pcTotalFreePages = 0;
305 *pcTotalBalloonPages = 0;
306 *puTotalBalloonSize = 0;
307
308 /* Must be callable from any thread, so can't use VMMR3CallR0. */
309 int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, NIL_VMCPUID, VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS, 0, &Req.Hdr);
310 if (rc == VINF_SUCCESS)
311 {
312 *pcTotalAllocPages = Req.cAllocPages;
313 *pcTotalFreePages = Req.cFreePages;
314 *pcTotalBalloonPages = Req.cBalloonedPages;
315 *puTotalBalloonSize = Req.cSharedPages;
316 }
317 return rc;
318}
319
320
321/**
322 * @see GMMR0QueryMemoryStatsReq
323 */
324GMMR3DECL(int) GMMR3QueryMemoryStats(PVM pVM, uint64_t *pcAllocPages, uint64_t *pcMaxPages, uint64_t *pcBalloonPages)
325{
326 GMMMEMSTATSREQ Req;
327 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
328 Req.Hdr.cbReq = sizeof(Req);
329 Req.cAllocPages = 0;
330 Req.cFreePages = 0;
331 Req.cBalloonedPages = 0;
332
333 *pcAllocPages = 0;
334 *pcMaxPages = 0;
335 *pcBalloonPages = 0;
336
337 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_QUERY_MEM_STATS, 0, &Req.Hdr);
338 if (rc == VINF_SUCCESS)
339 {
340 *pcAllocPages = Req.cAllocPages;
341 *pcMaxPages = Req.cMaxPages;
342 *pcBalloonPages = Req.cBalloonedPages;
343 }
344 return rc;
345}
346
347
348/**
349 * @see GMMR0MapUnmapChunk
350 */
351GMMR3DECL(int) GMMR3MapUnmapChunk(PVM pVM, uint32_t idChunkMap, uint32_t idChunkUnmap, PRTR3PTR ppvR3)
352{
353 GMMMAPUNMAPCHUNKREQ Req;
354 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
355 Req.Hdr.cbReq = sizeof(Req);
356 Req.idChunkMap = idChunkMap;
357 Req.idChunkUnmap = idChunkUnmap;
358 Req.pvR3 = NULL;
359 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_MAP_UNMAP_CHUNK, 0, &Req.Hdr);
360 if (RT_SUCCESS(rc) && ppvR3)
361 *ppvR3 = Req.pvR3;
362 return rc;
363}
364
365
366/**
367 * @see GMMR0FreeLargePage
368 */
369GMMR3DECL(int) GMMR3FreeLargePage(PVM pVM, uint32_t idPage)
370{
371 GMMFREELARGEPAGEREQ Req;
372 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
373 Req.Hdr.cbReq = sizeof(Req);
374 Req.idPage = idPage;
375 return VMMR3CallR0(pVM, VMMR0_DO_GMM_FREE_LARGE_PAGE, 0, &Req.Hdr);
376}
377
378
379/**
380 * @see GMMR0SeedChunk
381 */
382GMMR3DECL(int) GMMR3SeedChunk(PVM pVM, RTR3PTR pvR3)
383{
384 return VMMR3CallR0(pVM, VMMR0_DO_GMM_SEED_CHUNK, (uintptr_t)pvR3, NULL);
385}
386
387
388/**
389 * @see GMMR0RegisterSharedModule
390 */
391GMMR3DECL(int) GMMR3RegisterSharedModule(PVM pVM, PGMMREGISTERSHAREDMODULEREQ pReq)
392{
393 pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
394 pReq->Hdr.cbReq = RT_OFFSETOF(GMMREGISTERSHAREDMODULEREQ, aRegions[pReq->cRegions]);
395 int rc = VMMR3CallR0(pVM, VMMR0_DO_GMM_REGISTER_SHARED_MODULE, 0, &pReq->Hdr);
396 if (rc == VINF_SUCCESS)
397 rc = pReq->rc;
398 return rc;
399}
400
401
402/**
403 * @see GMMR0RegisterSharedModule
404 */
405GMMR3DECL(int) GMMR3UnregisterSharedModule(PVM pVM, PGMMUNREGISTERSHAREDMODULEREQ pReq)
406{
407 pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
408 pReq->Hdr.cbReq = sizeof(*pReq);
409 return VMMR3CallR0(pVM, VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE, 0, &pReq->Hdr);
410}
411
412
413/**
414 * @see GMMR0ResetSharedModules
415 */
416GMMR3DECL(int) GMMR3ResetSharedModules(PVM pVM)
417{
418 return VMMR3CallR0(pVM, VMMR0_DO_GMM_RESET_SHARED_MODULES, 0, NULL);
419}
420
421
422/**
423 * @see GMMR0CheckSharedModules
424 */
425GMMR3DECL(int) GMMR3CheckSharedModules(PVM pVM)
426{
427 return VMMR3CallR0(pVM, VMMR0_DO_GMM_CHECK_SHARED_MODULES, 0, NULL);
428}
429
430
431#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
432/**
433 * @see GMMR0FindDuplicatePage
434 */
435GMMR3DECL(bool) GMMR3IsDuplicatePage(PVM pVM, uint32_t idPage)
436{
437 GMMFINDDUPLICATEPAGEREQ Req;
438 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
439 Req.Hdr.cbReq = sizeof(Req);
440 Req.idPage = idPage;
441 Req.fDuplicate = false;
442
443 /* Must be callable from any thread, so can't use VMMR3CallR0. */
444 int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, NIL_VMCPUID, VMMR0_DO_GMM_FIND_DUPLICATE_PAGE, 0, &Req.Hdr);
445 if (rc == VINF_SUCCESS)
446 return Req.fDuplicate;
447 return false;
448}
449#endif /* VBOX_STRICT && HC_ARCH_BITS == 64 */
450
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