1 | /* $Id: PGMSharedPage.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * PGM - Page Manager and Monitor, Shared page handling
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2022 Oracle and/or its affiliates.
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox base platform packages, as
|
---|
10 | * available from https://www.virtualbox.org.
|
---|
11 | *
|
---|
12 | * This program is free software; you can redistribute it and/or
|
---|
13 | * modify it under the terms of the GNU General Public License
|
---|
14 | * as published by the Free Software Foundation, in version 3 of the
|
---|
15 | * License.
|
---|
16 | *
|
---|
17 | * This program is distributed in the hope that it will be useful, but
|
---|
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
20 | * General Public License for more details.
|
---|
21 | *
|
---|
22 | * You should have received a copy of the GNU General Public License
|
---|
23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
---|
24 | *
|
---|
25 | * SPDX-License-Identifier: GPL-3.0-only
|
---|
26 | */
|
---|
27 |
|
---|
28 |
|
---|
29 | /*********************************************************************************************************************************
|
---|
30 | * Header Files *
|
---|
31 | *********************************************************************************************************************************/
|
---|
32 | #define LOG_GROUP LOG_GROUP_PGM_SHARED
|
---|
33 | #define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
|
---|
34 | #include <VBox/vmm/pgm.h>
|
---|
35 | #include <VBox/vmm/stam.h>
|
---|
36 | #include <VBox/vmm/uvm.h>
|
---|
37 | #include "PGMInternal.h"
|
---|
38 | #include <VBox/vmm/vmcc.h>
|
---|
39 | #include <VBox/sup.h>
|
---|
40 | #include <VBox/param.h>
|
---|
41 | #include <VBox/err.h>
|
---|
42 | #include <VBox/log.h>
|
---|
43 | #include <VBox/VMMDev.h>
|
---|
44 | #include <iprt/asm.h>
|
---|
45 | #include <iprt/assert.h>
|
---|
46 | #include <iprt/mem.h>
|
---|
47 | #include <iprt/string.h>
|
---|
48 |
|
---|
49 | #include "PGMInline.h"
|
---|
50 |
|
---|
51 |
|
---|
52 | #ifdef VBOX_WITH_PAGE_SHARING
|
---|
53 |
|
---|
54 |
|
---|
55 | /*********************************************************************************************************************************
|
---|
56 | * Global Variables *
|
---|
57 | *********************************************************************************************************************************/
|
---|
58 | # ifdef VBOX_STRICT
|
---|
59 | /** Keep a copy of all registered shared modules for the .pgmcheckduppages debugger command. */
|
---|
60 | static PGMMREGISTERSHAREDMODULEREQ g_apSharedModules[512] = {0};
|
---|
61 | static unsigned g_cSharedModules = 0;
|
---|
62 | # endif /* VBOX_STRICT */
|
---|
63 |
|
---|
64 |
|
---|
65 | /**
|
---|
66 | * Registers a new shared module for the VM
|
---|
67 | *
|
---|
68 | * @returns VBox status code.
|
---|
69 | * @param pVM The cross context VM structure.
|
---|
70 | * @param enmGuestOS Guest OS type.
|
---|
71 | * @param pszModuleName Module name.
|
---|
72 | * @param pszVersion Module version.
|
---|
73 | * @param GCBaseAddr Module base address.
|
---|
74 | * @param cbModule Module size.
|
---|
75 | * @param cRegions Number of shared region descriptors.
|
---|
76 | * @param paRegions Shared region(s).
|
---|
77 | *
|
---|
78 | * @todo This should be a GMMR3 call. No need to involve GMM here.
|
---|
79 | */
|
---|
80 | VMMR3DECL(int) PGMR3SharedModuleRegister(PVM pVM, VBOXOSFAMILY enmGuestOS, char *pszModuleName, char *pszVersion,
|
---|
81 | RTGCPTR GCBaseAddr, uint32_t cbModule, uint32_t cRegions,
|
---|
82 | VMMDEVSHAREDREGIONDESC const *paRegions)
|
---|
83 | {
|
---|
84 | Log(("PGMR3SharedModuleRegister family=%d name=%s version=%s base=%RGv size=%x cRegions=%d\n",
|
---|
85 | enmGuestOS, pszModuleName, pszVersion, GCBaseAddr, cbModule, cRegions));
|
---|
86 |
|
---|
87 | /*
|
---|
88 | * Sanity check.
|
---|
89 | */
|
---|
90 | AssertReturn(cRegions <= VMMDEVSHAREDREGIONDESC_MAX, VERR_INVALID_PARAMETER);
|
---|
91 | if (!pVM->pgm.s.fPageFusionAllowed)
|
---|
92 | return VERR_NOT_SUPPORTED;
|
---|
93 |
|
---|
94 | /*
|
---|
95 | * Allocate and initialize a GMM request.
|
---|
96 | */
|
---|
97 | PGMMREGISTERSHAREDMODULEREQ pReq;
|
---|
98 | pReq = (PGMMREGISTERSHAREDMODULEREQ)RTMemAllocZ(RT_UOFFSETOF_DYN(GMMREGISTERSHAREDMODULEREQ, aRegions[cRegions]));
|
---|
99 | AssertReturn(pReq, VERR_NO_MEMORY);
|
---|
100 |
|
---|
101 | pReq->enmGuestOS = enmGuestOS;
|
---|
102 | pReq->GCBaseAddr = GCBaseAddr;
|
---|
103 | pReq->cbModule = cbModule;
|
---|
104 | pReq->cRegions = cRegions;
|
---|
105 | for (uint32_t i = 0; i < cRegions; i++)
|
---|
106 | pReq->aRegions[i] = paRegions[i];
|
---|
107 |
|
---|
108 | int rc = RTStrCopy(pReq->szName, sizeof(pReq->szName), pszModuleName);
|
---|
109 | if (RT_SUCCESS(rc))
|
---|
110 | {
|
---|
111 | rc = RTStrCopy(pReq->szVersion, sizeof(pReq->szVersion), pszVersion);
|
---|
112 | if (RT_SUCCESS(rc))
|
---|
113 | {
|
---|
114 | /*
|
---|
115 | * Issue the request. In strict builds, do some local tracking.
|
---|
116 | */
|
---|
117 | pgmR3PhysAssertSharedPageChecksums(pVM);
|
---|
118 | rc = GMMR3RegisterSharedModule(pVM, pReq);
|
---|
119 | if (RT_SUCCESS(rc))
|
---|
120 | rc = pReq->rc;
|
---|
121 | AssertMsg(rc == VINF_SUCCESS || rc == VINF_GMM_SHARED_MODULE_ALREADY_REGISTERED, ("%Rrc\n", rc));
|
---|
122 |
|
---|
123 | # ifdef VBOX_STRICT
|
---|
124 | if ( rc == VINF_SUCCESS
|
---|
125 | && g_cSharedModules < RT_ELEMENTS(g_apSharedModules))
|
---|
126 | {
|
---|
127 | unsigned i;
|
---|
128 | for (i = 0; i < RT_ELEMENTS(g_apSharedModules); i++)
|
---|
129 | if (g_apSharedModules[i] == NULL)
|
---|
130 | {
|
---|
131 |
|
---|
132 | size_t const cbSharedModule = RT_UOFFSETOF_DYN(GMMREGISTERSHAREDMODULEREQ, aRegions[cRegions]);
|
---|
133 | g_apSharedModules[i] = (PGMMREGISTERSHAREDMODULEREQ)RTMemDup(pReq, cbSharedModule);
|
---|
134 | g_cSharedModules++;
|
---|
135 | break;
|
---|
136 | }
|
---|
137 | Assert(i < RT_ELEMENTS(g_apSharedModules));
|
---|
138 | }
|
---|
139 | # endif /* VBOX_STRICT */
|
---|
140 | if (RT_SUCCESS(rc))
|
---|
141 | rc = VINF_SUCCESS;
|
---|
142 | }
|
---|
143 | }
|
---|
144 |
|
---|
145 | RTMemFree(pReq);
|
---|
146 | return rc;
|
---|
147 | }
|
---|
148 |
|
---|
149 |
|
---|
150 | /**
|
---|
151 | * Unregisters a shared module for the VM
|
---|
152 | *
|
---|
153 | * @returns VBox status code.
|
---|
154 | * @param pVM The cross context VM structure.
|
---|
155 | * @param pszModuleName Module name.
|
---|
156 | * @param pszVersion Module version.
|
---|
157 | * @param GCBaseAddr Module base address.
|
---|
158 | * @param cbModule Module size.
|
---|
159 | *
|
---|
160 | * @todo This should be a GMMR3 call. No need to involve GMM here.
|
---|
161 | */
|
---|
162 | VMMR3DECL(int) PGMR3SharedModuleUnregister(PVM pVM, char *pszModuleName, char *pszVersion, RTGCPTR GCBaseAddr, uint32_t cbModule)
|
---|
163 | {
|
---|
164 | Log(("PGMR3SharedModuleUnregister name=%s version=%s base=%RGv size=%x\n", pszModuleName, pszVersion, GCBaseAddr, cbModule));
|
---|
165 |
|
---|
166 | AssertMsgReturn(cbModule > 0 && cbModule < _1G, ("%u\n", cbModule), VERR_OUT_OF_RANGE);
|
---|
167 | if (!pVM->pgm.s.fPageFusionAllowed)
|
---|
168 | return VERR_NOT_SUPPORTED;
|
---|
169 |
|
---|
170 | /*
|
---|
171 | * Forward the request to GMM (ring-0).
|
---|
172 | */
|
---|
173 | PGMMUNREGISTERSHAREDMODULEREQ pReq = (PGMMUNREGISTERSHAREDMODULEREQ)RTMemAlloc(sizeof(*pReq));
|
---|
174 | AssertReturn(pReq, VERR_NO_MEMORY);
|
---|
175 |
|
---|
176 | pReq->GCBaseAddr = GCBaseAddr;
|
---|
177 | pReq->u32Alignment = 0;
|
---|
178 | pReq->cbModule = cbModule;
|
---|
179 |
|
---|
180 | int rc = RTStrCopy(pReq->szName, sizeof(pReq->szName), pszModuleName);
|
---|
181 | if (RT_SUCCESS(rc))
|
---|
182 | {
|
---|
183 | rc = RTStrCopy(pReq->szVersion, sizeof(pReq->szVersion), pszVersion);
|
---|
184 | if (RT_SUCCESS(rc))
|
---|
185 | {
|
---|
186 | pgmR3PhysAssertSharedPageChecksums(pVM);
|
---|
187 | rc = GMMR3UnregisterSharedModule(pVM, pReq);
|
---|
188 | pgmR3PhysAssertSharedPageChecksums(pVM);
|
---|
189 |
|
---|
190 | # ifdef VBOX_STRICT
|
---|
191 | /*
|
---|
192 | * Update our local tracking.
|
---|
193 | */
|
---|
194 | for (unsigned i = 0; i < g_cSharedModules; i++)
|
---|
195 | {
|
---|
196 | if ( g_apSharedModules[i]
|
---|
197 | && !strcmp(g_apSharedModules[i]->szName, pszModuleName)
|
---|
198 | && !strcmp(g_apSharedModules[i]->szVersion, pszVersion))
|
---|
199 | {
|
---|
200 | RTMemFree(g_apSharedModules[i]);
|
---|
201 | g_apSharedModules[i] = NULL;
|
---|
202 | g_cSharedModules--;
|
---|
203 | break;
|
---|
204 | }
|
---|
205 | }
|
---|
206 | # endif /* VBOX_STRICT */
|
---|
207 | }
|
---|
208 | }
|
---|
209 |
|
---|
210 | RTMemFree(pReq);
|
---|
211 | return rc;
|
---|
212 | }
|
---|
213 |
|
---|
214 |
|
---|
215 | /**
|
---|
216 | * Rendezvous callback that will be called once.
|
---|
217 | *
|
---|
218 | * @returns VBox strict status code.
|
---|
219 | * @param pVM The cross context VM structure.
|
---|
220 | * @param pVCpu The cross context virtual CPU structure of the calling EMT.
|
---|
221 | * @param pvUser Pointer to a VMCPUID with the requester's ID.
|
---|
222 | */
|
---|
223 | static DECLCALLBACK(VBOXSTRICTRC) pgmR3SharedModuleRegRendezvous(PVM pVM, PVMCPU pVCpu, void *pvUser)
|
---|
224 | {
|
---|
225 | VMCPUID idCpu = *(VMCPUID *)pvUser;
|
---|
226 |
|
---|
227 | /* Execute on the VCPU that issued the original request to make sure we're in the right cr3 context. */
|
---|
228 | if (pVCpu->idCpu != idCpu)
|
---|
229 | {
|
---|
230 | Assert(pVM->cCpus > 1);
|
---|
231 | return VINF_SUCCESS;
|
---|
232 | }
|
---|
233 |
|
---|
234 |
|
---|
235 | /* Flush all pending handy page operations before changing any shared page assignments. */
|
---|
236 | int rc = PGMR3PhysAllocateHandyPages(pVM);
|
---|
237 | AssertRC(rc);
|
---|
238 |
|
---|
239 | /*
|
---|
240 | * Lock it here as we can't deal with busy locks in this ring-0 path.
|
---|
241 | */
|
---|
242 | LogFlow(("pgmR3SharedModuleRegRendezvous: start (%d)\n", pVM->pgm.s.cSharedPages));
|
---|
243 |
|
---|
244 | PGM_LOCK_VOID(pVM);
|
---|
245 | pgmR3PhysAssertSharedPageChecksums(pVM);
|
---|
246 | rc = GMMR3CheckSharedModules(pVM);
|
---|
247 | pgmR3PhysAssertSharedPageChecksums(pVM);
|
---|
248 | PGM_UNLOCK(pVM);
|
---|
249 | AssertLogRelRC(rc);
|
---|
250 |
|
---|
251 | LogFlow(("pgmR3SharedModuleRegRendezvous: done (%d)\n", pVM->pgm.s.cSharedPages));
|
---|
252 | return rc;
|
---|
253 | }
|
---|
254 |
|
---|
255 | /**
|
---|
256 | * Shared module check helper (called on the way out).
|
---|
257 | *
|
---|
258 | * @param pVM The cross context VM structure.
|
---|
259 | * @param idCpu VCPU id.
|
---|
260 | */
|
---|
261 | static DECLCALLBACK(void) pgmR3CheckSharedModulesHelper(PVM pVM, VMCPUID idCpu)
|
---|
262 | {
|
---|
263 | /* We must stall other VCPUs as we'd otherwise have to send IPI flush commands for every single change we make. */
|
---|
264 | STAM_REL_PROFILE_START(&pVM->pgm.s.StatShModCheck, a);
|
---|
265 | int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE, pgmR3SharedModuleRegRendezvous, &idCpu);
|
---|
266 | AssertRCSuccess(rc);
|
---|
267 | STAM_REL_PROFILE_STOP(&pVM->pgm.s.StatShModCheck, a);
|
---|
268 | }
|
---|
269 |
|
---|
270 |
|
---|
271 | /**
|
---|
272 | * Check all registered modules for changes.
|
---|
273 | *
|
---|
274 | * @returns VBox status code.
|
---|
275 | * @param pVM The cross context VM structure.
|
---|
276 | */
|
---|
277 | VMMR3DECL(int) PGMR3SharedModuleCheckAll(PVM pVM)
|
---|
278 | {
|
---|
279 | if (!pVM->pgm.s.fPageFusionAllowed)
|
---|
280 | return VERR_NOT_SUPPORTED;
|
---|
281 |
|
---|
282 | /* Queue the actual registration as we are under the IOM lock right now. Perform this operation on the way out. */
|
---|
283 | return VMR3ReqCallNoWait(pVM, VMCPUID_ANY_QUEUE, (PFNRT)pgmR3CheckSharedModulesHelper, 2, pVM, VMMGetCpuId(pVM));
|
---|
284 | }
|
---|
285 |
|
---|
286 |
|
---|
287 | # ifdef DEBUG
|
---|
288 | /**
|
---|
289 | * Query the state of a page in a shared module
|
---|
290 | *
|
---|
291 | * @returns VBox status code.
|
---|
292 | * @param pVM The cross context VM structure.
|
---|
293 | * @param GCPtrPage Page address.
|
---|
294 | * @param pfShared Shared status (out).
|
---|
295 | * @param pfPageFlags Page flags (out).
|
---|
296 | */
|
---|
297 | VMMR3DECL(int) PGMR3SharedModuleGetPageState(PVM pVM, RTGCPTR GCPtrPage, bool *pfShared, uint64_t *pfPageFlags)
|
---|
298 | {
|
---|
299 | /* Debug only API for the page fusion testcase. */
|
---|
300 | PGMPTWALK Walk;
|
---|
301 |
|
---|
302 | PGM_LOCK_VOID(pVM);
|
---|
303 |
|
---|
304 | int rc = PGMGstGetPage(VMMGetCpu(pVM), GCPtrPage, &Walk);
|
---|
305 | switch (rc)
|
---|
306 | {
|
---|
307 | case VINF_SUCCESS:
|
---|
308 | {
|
---|
309 | PPGMPAGE pPage = pgmPhysGetPage(pVM, Walk.GCPhys);
|
---|
310 | if (pPage)
|
---|
311 | {
|
---|
312 | *pfShared = PGM_PAGE_IS_SHARED(pPage);
|
---|
313 | *pfPageFlags = Walk.fEffective;
|
---|
314 | }
|
---|
315 | else
|
---|
316 | rc = VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS;
|
---|
317 | break;
|
---|
318 | }
|
---|
319 |
|
---|
320 | case VERR_PAGE_NOT_PRESENT:
|
---|
321 | case VERR_PAGE_TABLE_NOT_PRESENT:
|
---|
322 | case VERR_PAGE_MAP_LEVEL4_NOT_PRESENT:
|
---|
323 | case VERR_PAGE_DIRECTORY_PTR_NOT_PRESENT:
|
---|
324 | *pfShared = false;
|
---|
325 | *pfPageFlags = 0;
|
---|
326 | rc = VINF_SUCCESS;
|
---|
327 | break;
|
---|
328 |
|
---|
329 | default:
|
---|
330 | break;
|
---|
331 | }
|
---|
332 |
|
---|
333 | PGM_UNLOCK(pVM);
|
---|
334 | return rc;
|
---|
335 | }
|
---|
336 | # endif /* DEBUG */
|
---|
337 |
|
---|
338 | # ifdef VBOX_STRICT
|
---|
339 |
|
---|
340 | /**
|
---|
341 | * @callback_method_impl{FNDBGCCMD, The '.pgmcheckduppages' command.}
|
---|
342 | */
|
---|
343 | DECLCALLBACK(int) pgmR3CmdCheckDuplicatePages(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
|
---|
344 | {
|
---|
345 | unsigned cBallooned = 0;
|
---|
346 | unsigned cShared = 0;
|
---|
347 | unsigned cZero = 0;
|
---|
348 | unsigned cUnique = 0;
|
---|
349 | unsigned cDuplicate = 0;
|
---|
350 | unsigned cAllocZero = 0;
|
---|
351 | unsigned cPages = 0;
|
---|
352 | NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
|
---|
353 | PVM pVM = pUVM->pVM;
|
---|
354 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
355 |
|
---|
356 | PGM_LOCK_VOID(pVM);
|
---|
357 |
|
---|
358 | for (PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesXR3; pRam; pRam = pRam->pNextR3)
|
---|
359 | {
|
---|
360 | PPGMPAGE pPage = &pRam->aPages[0];
|
---|
361 | RTGCPHYS GCPhys = pRam->GCPhys;
|
---|
362 | uint32_t cLeft = pRam->cb >> GUEST_PAGE_SHIFT;
|
---|
363 | while (cLeft-- > 0)
|
---|
364 | {
|
---|
365 | if (PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM)
|
---|
366 | {
|
---|
367 | switch (PGM_PAGE_GET_STATE(pPage))
|
---|
368 | {
|
---|
369 | case PGM_PAGE_STATE_ZERO:
|
---|
370 | cZero++;
|
---|
371 | break;
|
---|
372 |
|
---|
373 | case PGM_PAGE_STATE_BALLOONED:
|
---|
374 | cBallooned++;
|
---|
375 | break;
|
---|
376 |
|
---|
377 | case PGM_PAGE_STATE_SHARED:
|
---|
378 | cShared++;
|
---|
379 | break;
|
---|
380 |
|
---|
381 | case PGM_PAGE_STATE_ALLOCATED:
|
---|
382 | case PGM_PAGE_STATE_WRITE_MONITORED:
|
---|
383 | {
|
---|
384 | /* Check if the page was allocated, but completely zero. */
|
---|
385 | PGMPAGEMAPLOCK PgMpLck;
|
---|
386 | const void *pvPage;
|
---|
387 | int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pPage, GCPhys, &pvPage, &PgMpLck);
|
---|
388 | if ( RT_SUCCESS(rc)
|
---|
389 | && ASMMemIsZero(pvPage, GUEST_PAGE_SIZE))
|
---|
390 | cAllocZero++;
|
---|
391 | else if (GMMR3IsDuplicatePage(pVM, PGM_PAGE_GET_PAGEID(pPage)))
|
---|
392 | cDuplicate++;
|
---|
393 | else
|
---|
394 | cUnique++;
|
---|
395 | if (RT_SUCCESS(rc))
|
---|
396 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
397 | break;
|
---|
398 | }
|
---|
399 |
|
---|
400 | default:
|
---|
401 | AssertFailed();
|
---|
402 | break;
|
---|
403 | }
|
---|
404 | }
|
---|
405 |
|
---|
406 | /* next */
|
---|
407 | pPage++;
|
---|
408 | GCPhys += GUEST_PAGE_SIZE;
|
---|
409 | cPages++;
|
---|
410 | /* Give some feedback for every processed megabyte. */
|
---|
411 | if ((cPages & 0x7f) == 0)
|
---|
412 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, ".");
|
---|
413 | }
|
---|
414 | }
|
---|
415 | PGM_UNLOCK(pVM);
|
---|
416 |
|
---|
417 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "\nNumber of zero pages %08x (%d MB)\n", cZero, cZero / 256);
|
---|
418 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Number of alloczero pages %08x (%d MB)\n", cAllocZero, cAllocZero / 256);
|
---|
419 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Number of ballooned pages %08x (%d MB)\n", cBallooned, cBallooned / 256);
|
---|
420 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Number of shared pages %08x (%d MB)\n", cShared, cShared / 256);
|
---|
421 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Number of unique pages %08x (%d MB)\n", cUnique, cUnique / 256);
|
---|
422 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Number of duplicate pages %08x (%d MB)\n", cDuplicate, cDuplicate / 256);
|
---|
423 | return VINF_SUCCESS;
|
---|
424 | }
|
---|
425 |
|
---|
426 |
|
---|
427 | /**
|
---|
428 | * @callback_method_impl{FNDBGCCMD, The '.pgmsharedmodules' command.}
|
---|
429 | */
|
---|
430 | DECLCALLBACK(int) pgmR3CmdShowSharedModules(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
|
---|
431 | {
|
---|
432 | NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
|
---|
433 | PVM pVM = pUVM->pVM;
|
---|
434 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
---|
435 |
|
---|
436 | PGM_LOCK_VOID(pVM);
|
---|
437 | for (unsigned i = 0; i < RT_ELEMENTS(g_apSharedModules); i++)
|
---|
438 | {
|
---|
439 | if (g_apSharedModules[i])
|
---|
440 | {
|
---|
441 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Shared module %s (%s):\n", g_apSharedModules[i]->szName, g_apSharedModules[i]->szVersion);
|
---|
442 | for (unsigned j = 0; j < g_apSharedModules[i]->cRegions; j++)
|
---|
443 | pCmdHlp->pfnPrintf(pCmdHlp, NULL, "--- Region %d: base %RGv size %x\n", j, g_apSharedModules[i]->aRegions[j].GCRegionAddr, g_apSharedModules[i]->aRegions[j].cbRegion);
|
---|
444 | }
|
---|
445 | }
|
---|
446 | PGM_UNLOCK(pVM);
|
---|
447 |
|
---|
448 | return VINF_SUCCESS;
|
---|
449 | }
|
---|
450 |
|
---|
451 | # endif /* VBOX_STRICT*/
|
---|
452 | #endif /* VBOX_WITH_PAGE_SHARING */
|
---|