gmm.h@ 93963

Last change on this file since 93963 was 93554, checked in by vboxsync, 3 years ago
VMM: Changed PAGE_SIZE -> GUEST_PAGE_SIZE / HOST_PAGE_SIZE, PAGE_SHIFT -> GUEST_PAGE_SHIFT / HOST_PAGE_SHIFT, and PAGE_OFFSET_MASK -> GUEST_PAGE_OFFSET_MASK / HOST_PAGE_OFFSET_MASK. Also removed most usage of ASMMemIsZeroPage and ASMMemZeroPage since the host and guest page size doesn't need to be the same any more. Some work left to do in the page pool code. bugref:9898
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 30.4 KB

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1	/** @file
2	* GMM - The Global Memory Manager.
3	*/
4
5	/*
6	* Copyright (C) 2007-2022 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef VBOX_INCLUDED_vmm_gmm_h
27	#define VBOX_INCLUDED_vmm_gmm_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <VBox/vmm/gvmm.h>
33	#include <VBox/sup.h>
34	#include <VBox/param.h>
35	#include <VBox/ostypes.h>
36	#include <iprt/avl.h>
37
38
39	RT_C_DECLS_BEGIN
40
41	/** @defgroup grp_gmm GMM - The Global Memory Manager
42	* @ingroup grp_vmm
43	* @{
44	*/
45
46	/** @def IN_GMM_R0
47	* Used to indicate whether we're inside the same link module as the ring 0
48	* part of the Global Memory Manager or not.
49	*/
50	#ifdef DOXYGEN_RUNNING
51	# define IN_GMM_R0
52	#endif
53	/** @def GMMR0DECL
54	* Ring 0 GMM export or import declaration.
55	* @param type The return type of the function declaration.
56	*/
57	#ifdef IN_GMM_R0
58	# define GMMR0DECL(type) DECLEXPORT(type) VBOXCALL
59	#else
60	# define GMMR0DECL(type) DECLIMPORT(type) VBOXCALL
61	#endif
62
63	/** @def IN_GMM_R3
64	* Used to indicate whether we're inside the same link module as the ring 3
65	* part of the Global Memory Manager or not.
66	*/
67	#ifdef DOXYGEN_RUNNING
68	# define IN_GMM_R3
69	#endif
70	/** @def GMMR3DECL
71	* Ring 3 GMM export or import declaration.
72	* @param type The return type of the function declaration.
73	*/
74	#ifdef IN_GMM_R3
75	# define GMMR3DECL(type) DECLEXPORT(type) VBOXCALL
76	#else
77	# define GMMR3DECL(type) DECLIMPORT(type) VBOXCALL
78	#endif
79
80
81	/** The chunk shift. (2^21 = 2 MB) */
82	#define GMM_CHUNK_SHIFT 21
83	/** The allocation chunk size. */
84	#define GMM_CHUNK_SIZE (1U << GMM_CHUNK_SHIFT)
85	/** The allocation chunk size in (guest) pages. */
86	#define GMM_CHUNK_NUM_PAGES (1U << (GMM_CHUNK_SHIFT - GUEST_PAGE_SHIFT))
87	/** The shift factor for converting a page id into a chunk id. */
88	#define GMM_CHUNKID_SHIFT (GMM_CHUNK_SHIFT - GUEST_PAGE_SHIFT)
89	/** The last valid Chunk ID value. */
90	#define GMM_CHUNKID_LAST (GMM_PAGEID_LAST >> GMM_CHUNKID_SHIFT)
91	/** The last valid Page ID value. */
92	#define GMM_PAGEID_LAST UINT32_C(0xfffffff0)
93	/** Mask out the page index from the Page ID. */
94	#define GMM_PAGEID_IDX_MASK ((1U << GMM_CHUNKID_SHIFT) - 1)
95	/** The NIL Chunk ID value. */
96	#define NIL_GMM_CHUNKID 0
97	/** The NIL Page ID value. */
98	#define NIL_GMM_PAGEID 0
99
100	#if 0 /* wrong - these are guest page pfns and not page ids! */
101	/** Special Page ID used by unassigned pages. */
102	#define GMM_PAGEID_UNASSIGNED 0x0fffffffU
103	/** Special Page ID used by unsharable pages.
104	* Like MMIO2, shadow and heap. This is for later, obviously. */
105	#define GMM_PAGEID_UNSHARABLE 0x0ffffffeU
106	/** The end of the valid Page IDs. This is the first special one. */
107	#define GMM_PAGEID_END 0x0ffffff0U
108	#endif
109
110
111	/** @def GMM_GCPHYS_LAST
112	* The last of the valid guest physical address as it applies to GMM pages.
113	*
114	* This must reflect the constraints imposed by the RTGCPHYS type and
115	* the guest page frame number used internally in GMMPAGE.
116	*
117	* @note Note this corresponds to GMM_PAGE_PFN_LAST. */
118	#if HC_ARCH_BITS == 64
119	# define GMM_GCPHYS_LAST UINT64_C(0x00000fffffff0000) /* 2^44 (16TB) - 0x10000 */
120	#else
121	# define GMM_GCPHYS_LAST UINT64_C(0x0000000fffff0000) /* 2^36 (64GB) - 0x10000 */
122	#endif
123
124	/**
125	* Over-commitment policy.
126	*/
127	typedef enum GMMOCPOLICY
128	{
129	/** The usual invalid 0 value. */
130	GMMOCPOLICY_INVALID = 0,
131	/** No over-commitment, fully backed.
132	* The GMM guarantees that it will be able to allocate all of the
133	* guest RAM for a VM with OC policy. */
134	GMMOCPOLICY_NO_OC,
135	/** to-be-determined. */
136	GMMOCPOLICY_TBD,
137	/** The end of the valid policy range. */
138	GMMOCPOLICY_END,
139	/** The usual 32-bit hack. */
140	GMMOCPOLICY_32BIT_HACK = 0x7fffffff
141	} GMMOCPOLICY;
142
143	/**
144	* VM / Memory priority.
145	*/
146	typedef enum GMMPRIORITY
147	{
148	/** The usual invalid 0 value. */
149	GMMPRIORITY_INVALID = 0,
150	/** High.
151	* When ballooning, ask these VMs last.
152	* When running out of memory, try not to interrupt these VMs. */
153	GMMPRIORITY_HIGH,
154	/** Normal.
155	* When ballooning, don't wait to ask these.
156	* When running out of memory, pause, save and/or kill these VMs. */
157	GMMPRIORITY_NORMAL,
158	/** Low.
159	* When ballooning, maximize these first.
160	* When running out of memory, save or kill these VMs. */
161	GMMPRIORITY_LOW,
162	/** The end of the valid priority range. */
163	GMMPRIORITY_END,
164	/** The custom 32-bit type blowup. */
165	GMMPRIORITY_32BIT_HACK = 0x7fffffff
166	} GMMPRIORITY;
167
168
169	/**
170	* GMM Memory Accounts.
171	*/
172	typedef enum GMMACCOUNT
173	{
174	/** The customary invalid zero entry. */
175	GMMACCOUNT_INVALID = 0,
176	/** Account with the base allocations. */
177	GMMACCOUNT_BASE,
178	/** Account with the shadow allocations. */
179	GMMACCOUNT_SHADOW,
180	/** Account with the fixed allocations. */
181	GMMACCOUNT_FIXED,
182	/** The end of the valid values. */
183	GMMACCOUNT_END,
184	/** The usual 32-bit value to finish it off. */
185	GMMACCOUNT_32BIT_HACK = 0x7fffffff
186	} GMMACCOUNT;
187
188
189	/**
190	* Balloon actions.
191	*/
192	typedef enum
193	{
194	/** Invalid zero entry. */
195	GMMBALLOONACTION_INVALID = 0,
196	/** Inflate the balloon. */
197	GMMBALLOONACTION_INFLATE,
198	/** Deflate the balloon. */
199	GMMBALLOONACTION_DEFLATE,
200	/** Puncture the balloon because of VM reset. */
201	GMMBALLOONACTION_RESET,
202	/** End of the valid actions. */
203	GMMBALLOONACTION_END,
204	/** hack forcing the size of the enum to 32-bits. */
205	GMMBALLOONACTION_MAKE_32BIT_HACK = 0x7fffffff
206	} GMMBALLOONACTION;
207
208
209	/**
210	* A page descriptor for use when freeing pages.
211	* See GMMR0FreePages, GMMR0BalloonedPages.
212	*/
213	typedef struct GMMFREEPAGEDESC
214	{
215	/** The Page ID of the page to be freed. */
216	uint32_t idPage;
217	} GMMFREEPAGEDESC;
218	/** Pointer to a page descriptor for freeing pages. */
219	typedef GMMFREEPAGEDESC *PGMMFREEPAGEDESC;
220
221
222	/**
223	* A page descriptor for use when updating and allocating pages.
224	*
225	* This is a bit complicated because we want to do as much as possible
226	* with the same structure.
227	*/
228	typedef struct GMMPAGEDESC
229	{
230	/** The physical address of the page.
231	*
232	* @input GMMR0AllocateHandyPages expects the guest physical address
233	* to update the GMMPAGE structure with. Pass GMM_GCPHYS_UNSHAREABLE
234	* when appropriate and NIL_GMMPAGEDESC_PHYS when the page wasn't used
235	* for any specific guest address.
236	*
237	* GMMR0AllocatePage expects the guest physical address to put in
238	* the GMMPAGE structure for the page it allocates for this entry.
239	* Pass NIL_GMMPAGEDESC_PHYS and GMM_GCPHYS_UNSHAREABLE as above.
240	*
241	* @output The host physical address of the allocated page.
242	* NIL_GMMPAGEDESC_PHYS on allocation failure.
243	*
244	* ASSUMES: sizeof(RTHCPHYS) >= sizeof(RTGCPHYS) and that physical addresses are
245	* limited to 63 or fewer bits (52 by AMD64 arch spec).
246	*/
247	RT_GCC_EXTENSION
248	RTHCPHYS HCPhysGCPhys : 63;
249	/** Set if the memory was zeroed. */
250	RT_GCC_EXTENSION
251	RTHCPHYS fZeroed : 1;
252
253	/** The Page ID.
254	*
255	* @input GMMR0AllocateHandyPages expects the Page ID of the page to
256	* update here. NIL_GMM_PAGEID means no page should be updated.
257	*
258	* GMMR0AllocatePages requires this to be initialized to
259	* NIL_GMM_PAGEID currently.
260	*
261	* @output The ID of the page, NIL_GMM_PAGEID if the allocation failed.
262	*/
263	uint32_t idPage;
264
265	/** The Page ID of the shared page was replaced by this page.
266	*
267	* @input GMMR0AllocateHandyPages expects this to indicate a shared
268	* page that has been replaced by this page and should have its
269	* reference counter decremented and perhaps be freed up. Use
270	* NIL_GMM_PAGEID if no shared page was involved.
271	*
272	* All other APIs expects NIL_GMM_PAGEID here.
273	*
274	* @output All APIs sets this to NIL_GMM_PAGEID.
275	*/
276	uint32_t idSharedPage;
277	} GMMPAGEDESC;
278	AssertCompileSize(GMMPAGEDESC, 16);
279	/** Pointer to a page allocation. */
280	typedef GMMPAGEDESC *PGMMPAGEDESC;
281
282	/** Special NIL value for GMMPAGEDESC::HCPhysGCPhys. */
283	#define NIL_GMMPAGEDESC_PHYS UINT64_C(0x7fffffffffffffff)
284
285	/** GMMPAGEDESC::HCPhysGCPhys value that indicates that the page is unsharable.
286	* @note This corresponds to GMM_PAGE_PFN_UNSHAREABLE. */
287	#if HC_ARCH_BITS == 64
288	# define GMM_GCPHYS_UNSHAREABLE UINT64_C(0x00000fffffff1000)
289	#else
290	# define GMM_GCPHYS_UNSHAREABLE UINT64_C(0x0000000fffff1000)
291	#endif
292
293
294	/**
295	* The allocation sizes.
296	*/
297	typedef struct GMMVMSIZES
298	{
299	/** The number of pages of base memory.
300	* This is the sum of RAM, ROMs and handy pages. */
301	uint64_t cBasePages;
302	/** The number of pages for the shadow pool. (Can be squeezed for memory.) */
303	uint32_t cShadowPages;
304	/** The number of pages for fixed allocations like MMIO2 and the hyper heap. */
305	uint32_t cFixedPages;
306	} GMMVMSIZES;
307	/** Pointer to a GMMVMSIZES. */
308	typedef GMMVMSIZES *PGMMVMSIZES;
309
310
311	/**
312	* GMM VM statistics.
313	*/
314	typedef struct GMMVMSTATS
315	{
316	/** The reservations. */
317	GMMVMSIZES Reserved;
318	/** The actual allocations.
319	* This includes both private and shared page allocations. */
320	GMMVMSIZES Allocated;
321
322	/** The current number of private pages. */
323	uint64_t cPrivatePages;
324	/** The current number of shared pages. */
325	uint64_t cSharedPages;
326	/** The current number of ballooned pages. */
327	uint64_t cBalloonedPages;
328	/** The max number of pages that can be ballooned. */
329	uint64_t cMaxBalloonedPages;
330	/** The number of pages we've currently requested the guest to give us.
331	* This is 0 if no pages currently requested. */
332	uint64_t cReqBalloonedPages;
333	/** The number of pages the guest has given us in response to the request.
334	* This is not reset on request completed and may be used in later decisions. */
335	uint64_t cReqActuallyBalloonedPages;
336	/** The number of pages we've currently requested the guest to take back. */
337	uint64_t cReqDeflatePages;
338	/** The number of shareable module tracked by this VM. */
339	uint32_t cShareableModules;
340
341	/** The current over-commitment policy. */
342	GMMOCPOLICY enmPolicy;
343	/** The VM priority for arbitrating VMs in low and out of memory situation.
344	* Like which VMs to start squeezing first. */
345	GMMPRIORITY enmPriority;
346	/** Whether ballooning is enabled or not. */
347	bool fBallooningEnabled;
348	/** Whether shared paging is enabled or not. */
349	bool fSharedPagingEnabled;
350	/** Whether the VM is allowed to allocate memory or not.
351	* This is used when the reservation update request fails or when the VM has
352	* been told to suspend/save/die in an out-of-memory case. */
353	bool fMayAllocate;
354	/** Explicit alignment. */
355	bool afReserved[1];
356
357
358	} GMMVMSTATS;
359
360
361	/**
362	* The GMM statistics.
363	*/
364	typedef struct GMMSTATS
365	{
366	/** The maximum number of pages we're allowed to allocate
367	* (GMM::cMaxPages). */
368	uint64_t cMaxPages;
369	/** The number of pages that has been reserved (GMM::cReservedPages). */
370	uint64_t cReservedPages;
371	/** The number of pages that we have over-committed in reservations
372	* (GMM::cOverCommittedPages). */
373	uint64_t cOverCommittedPages;
374	/** The number of actually allocated (committed if you like) pages
375	* (GMM::cAllocatedPages). */
376	uint64_t cAllocatedPages;
377	/** The number of pages that are shared. A subset of cAllocatedPages.
378	* (GMM::cSharedPages) */
379	uint64_t cSharedPages;
380	/** The number of pages that are actually shared between VMs.
381	* (GMM:cDuplicatePages) */
382	uint64_t cDuplicatePages;
383	/** The number of pages that are shared that has been left behind by
384	* VMs not doing proper cleanups (GMM::cLeftBehindSharedPages). */
385	uint64_t cLeftBehindSharedPages;
386	/** The number of current ballooned pages (GMM::cBalloonedPages). */
387	uint64_t cBalloonedPages;
388	/** The number of allocation chunks (GMM::cChunks). */
389	uint32_t cChunks;
390	/** The number of freed chunks ever (GMM::cFreedChunks). */
391	uint32_t cFreedChunks;
392	/** The number of shareable modules (GMM:cShareableModules). */
393	uint64_t cShareableModules;
394	/** The current chunk freeing generation use by the per-VM TLB validation (GMM::idFreeGeneration). */
395	uint64_t idFreeGeneration;
396	/** Space reserved for later. */
397	uint64_t au64Reserved[1];
398
399	/** Statistics for the specified VM. (Zero filled if not requested.) */
400	GMMVMSTATS VMStats;
401	} GMMSTATS;
402	/** Pointer to the GMM statistics. */
403	typedef GMMSTATS *PGMMSTATS;
404	/** Const pointer to the GMM statistics. */
405	typedef const GMMSTATS *PCGMMSTATS;
406
407
408	GMMR0DECL(int) GMMR0Init(void);
409	GMMR0DECL(void) GMMR0Term(void);
410	GMMR0DECL(int) GMMR0InitPerVMData(PGVM pGVM);
411	GMMR0DECL(void) GMMR0CleanupVM(PGVM pGVM);
412	GMMR0DECL(int) GMMR0InitialReservation(PGVM pGVM, VMCPUID idCpu, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages,
413	GMMOCPOLICY enmPolicy, GMMPRIORITY enmPriority);
414	GMMR0DECL(int) GMMR0UpdateReservation(PGVM pGVM, VMCPUID idCpu, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages);
415	GMMR0DECL(int) GMMR0AllocateHandyPages(PGVM pGVM, VMCPUID idCpu, uint32_t cPagesToUpdate,
416	uint32_t cPagesToAlloc, PGMMPAGEDESC paPages);
417	GMMR0DECL(int) GMMR0AllocatePages(PGVM pGVM, VMCPUID idCpu, uint32_t cPages, PGMMPAGEDESC paPages, GMMACCOUNT enmAccount);
418	GMMR0DECL(int) GMMR0AllocateLargePage(PGVM pGVM, VMCPUID idCpu, uint32_t cbPage, uint32_t pIdPage, RTHCPHYS pHCPhys);
419	GMMR0DECL(int) GMMR0FreePages(PGVM pGVM, VMCPUID idCpu, uint32_t cPages, PGMMFREEPAGEDESC paPages, GMMACCOUNT enmAccount);
420	GMMR0DECL(int) GMMR0FreeLargePage(PGVM pGVM, VMCPUID idCpu, uint32_t idPage);
421	GMMR0DECL(int) GMMR0BalloonedPages(PGVM pGVM, VMCPUID idCpu, GMMBALLOONACTION enmAction, uint32_t cBalloonedPages);
422	GMMR0DECL(int) GMMR0MapUnmapChunk(PGVM pGVM, uint32_t idChunkMap, uint32_t idChunkUnmap, PRTR3PTR ppvR3);
423	GMMR0DECL(int) GMMR0PageIdToVirt(PGVM pGVM, uint32_t idPage, void **ppv);
424	GMMR0DECL(int) GMMR0RegisterSharedModule(PGVM pGVM, VMCPUID idCpu, VBOXOSFAMILY enmGuestOS, char *pszModuleName,
425	char *pszVersion, RTGCPTR GCBaseAddr, uint32_t cbModule, uint32_t cRegions,
426	struct VMMDEVSHAREDREGIONDESC const *paRegions);
427	GMMR0DECL(int) GMMR0UnregisterSharedModule(PGVM pGVM, VMCPUID idCpu, char pszModuleName, char pszVersion,
428	RTGCPTR GCBaseAddr, uint32_t cbModule);
429	GMMR0DECL(int) GMMR0UnregisterAllSharedModules(PGVM pGVM, VMCPUID idCpu);
430	GMMR0DECL(int) GMMR0CheckSharedModules(PGVM pGVM, VMCPUID idCpu);
431	GMMR0DECL(int) GMMR0ResetSharedModules(PGVM pGVM, VMCPUID idCpu);
432	GMMR0DECL(int) GMMR0QueryStatistics(PGMMSTATS pStats, PSUPDRVSESSION pSession);
433	GMMR0DECL(int) GMMR0ResetStatistics(PCGMMSTATS pStats, PSUPDRVSESSION pSession);
434
435	/**
436	* Request buffer for GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION.
437	* @see GMMR0InitialReservation
438	*/
439	typedef struct GMMINITIALRESERVATIONREQ
440	{
441	/** The header. */
442	SUPVMMR0REQHDR Hdr;
443	uint64_t cBasePages; /*< @see GMMR0InitialReservation /
444	uint32_t cShadowPages; /*< @see GMMR0InitialReservation /
445	uint32_t cFixedPages; /*< @see GMMR0InitialReservation /
446	GMMOCPOLICY enmPolicy; /*< @see GMMR0InitialReservation /
447	GMMPRIORITY enmPriority; /*< @see GMMR0InitialReservation /
448	} GMMINITIALRESERVATIONREQ;
449	/** Pointer to a GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION request buffer. */
450	typedef GMMINITIALRESERVATIONREQ *PGMMINITIALRESERVATIONREQ;
451
452	GMMR0DECL(int) GMMR0InitialReservationReq(PGVM pGVM, VMCPUID idCpu, PGMMINITIALRESERVATIONREQ pReq);
453
454
455	/**
456	* Request buffer for GMMR0UpdateReservationReq / VMMR0_DO_GMM_UPDATE_RESERVATION.
457	* @see GMMR0UpdateReservation
458	*/
459	typedef struct GMMUPDATERESERVATIONREQ
460	{
461	/** The header. */
462	SUPVMMR0REQHDR Hdr;
463	uint64_t cBasePages; /*< @see GMMR0UpdateReservation /
464	uint32_t cShadowPages; /*< @see GMMR0UpdateReservation /
465	uint32_t cFixedPages; /*< @see GMMR0UpdateReservation /
466	} GMMUPDATERESERVATIONREQ;
467	/** Pointer to a GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION request buffer. */
468	typedef GMMUPDATERESERVATIONREQ *PGMMUPDATERESERVATIONREQ;
469
470	GMMR0DECL(int) GMMR0UpdateReservationReq(PGVM pGVM, VMCPUID idCpu, PGMMUPDATERESERVATIONREQ pReq);
471
472
473	/**
474	* Request buffer for GMMR0AllocatePagesReq / VMMR0_DO_GMM_ALLOCATE_PAGES.
475	* @see GMMR0AllocatePages.
476	*/
477	typedef struct GMMALLOCATEPAGESREQ
478	{
479	/** The header. */
480	SUPVMMR0REQHDR Hdr;
481	/** The account to charge the allocation to. */
482	GMMACCOUNT enmAccount;
483	/** The number of pages to allocate. */
484	uint32_t cPages;
485	/** Array of page descriptors. */
486	GMMPAGEDESC aPages[1];
487	} GMMALLOCATEPAGESREQ;
488	/** Pointer to a GMMR0AllocatePagesReq / VMMR0_DO_GMM_ALLOCATE_PAGES request buffer. */
489	typedef GMMALLOCATEPAGESREQ *PGMMALLOCATEPAGESREQ;
490
491	GMMR0DECL(int) GMMR0AllocatePagesReq(PGVM pGVM, VMCPUID idCpu, PGMMALLOCATEPAGESREQ pReq);
492
493
494	/**
495	* Request buffer for GMMR0FreePagesReq / VMMR0_DO_GMM_FREE_PAGES.
496	* @see GMMR0FreePages.
497	*/
498	typedef struct GMMFREEPAGESREQ
499	{
500	/** The header. */
501	SUPVMMR0REQHDR Hdr;
502	/** The account this relates to. */
503	GMMACCOUNT enmAccount;
504	/** The number of pages to free. */
505	uint32_t cPages;
506	/** Array of free page descriptors. */
507	GMMFREEPAGEDESC aPages[1];
508	} GMMFREEPAGESREQ;
509	/** Pointer to a GMMR0FreePagesReq / VMMR0_DO_GMM_FREE_PAGES request buffer. */
510	typedef GMMFREEPAGESREQ *PGMMFREEPAGESREQ;
511
512	GMMR0DECL(int) GMMR0FreePagesReq(PGVM pGVM, VMCPUID idCpu, PGMMFREEPAGESREQ pReq);
513
514	/**
515	* Request buffer for GMMR0BalloonedPagesReq / VMMR0_DO_GMM_BALLOONED_PAGES.
516	* @see GMMR0BalloonedPages.
517	*/
518	typedef struct GMMBALLOONEDPAGESREQ
519	{
520	/** The header. */
521	SUPVMMR0REQHDR Hdr;
522	/** The number of ballooned pages. */
523	uint32_t cBalloonedPages;
524	/** Inflate or deflate the balloon. */
525	GMMBALLOONACTION enmAction;
526	} GMMBALLOONEDPAGESREQ;
527	/** Pointer to a GMMR0BalloonedPagesReq / VMMR0_DO_GMM_BALLOONED_PAGES request buffer. */
528	typedef GMMBALLOONEDPAGESREQ *PGMMBALLOONEDPAGESREQ;
529
530	GMMR0DECL(int) GMMR0BalloonedPagesReq(PGVM pGVM, VMCPUID idCpu, PGMMBALLOONEDPAGESREQ pReq);
531
532
533	/**
534	* Request buffer for GMMR0QueryHypervisorMemoryStatsReq / VMMR0_DO_GMM_QUERY_VMM_MEM_STATS.
535	* @see GMMR0QueryHypervisorMemoryStatsReq.
536	*/
537	typedef struct GMMMEMSTATSREQ
538	{
539	/** The header. */
540	SUPVMMR0REQHDR Hdr;
541	/** The number of allocated pages (out). */
542	uint64_t cAllocPages;
543	/** The number of free pages (out). */
544	uint64_t cFreePages;
545	/** The number of ballooned pages (out). */
546	uint64_t cBalloonedPages;
547	/** The number of shared pages (out). */
548	uint64_t cSharedPages;
549	/** Maximum nr of pages (out). */
550	uint64_t cMaxPages;
551	} GMMMEMSTATSREQ;
552	/** Pointer to a GMMR0QueryHypervisorMemoryStatsReq / VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS request buffer. */
553	typedef GMMMEMSTATSREQ *PGMMMEMSTATSREQ;
554
555	GMMR0DECL(int) GMMR0QueryHypervisorMemoryStatsReq(PGMMMEMSTATSREQ pReq);
556	GMMR0DECL(int) GMMR0QueryMemoryStatsReq(PGVM pGVM, VMCPUID idCpu, PGMMMEMSTATSREQ pReq);
557
558	/**
559	* Request buffer for GMMR0MapUnmapChunkReq / VMMR0_DO_GMM_MAP_UNMAP_CHUNK.
560	* @see GMMR0MapUnmapChunk
561	*/
562	typedef struct GMMMAPUNMAPCHUNKREQ
563	{
564	/** The header. */
565	SUPVMMR0REQHDR Hdr;
566	/** The chunk to map, NIL_GMM_CHUNKID if unmap only. (IN) */
567	uint32_t idChunkMap;
568	/** The chunk to unmap, NIL_GMM_CHUNKID if map only. (IN) */
569	uint32_t idChunkUnmap;
570	/** Where the mapping address is returned. (OUT) */
571	RTR3PTR pvR3;
572	} GMMMAPUNMAPCHUNKREQ;
573	/** Pointer to a GMMR0MapUnmapChunkReq / VMMR0_DO_GMM_MAP_UNMAP_CHUNK request buffer. */
574	typedef GMMMAPUNMAPCHUNKREQ *PGMMMAPUNMAPCHUNKREQ;
575
576	GMMR0DECL(int) GMMR0MapUnmapChunkReq(PGVM pGVM, PGMMMAPUNMAPCHUNKREQ pReq);
577
578
579	/**
580	* Request buffer for GMMR0FreeLargePageReq / VMMR0_DO_GMM_FREE_LARGE_PAGE.
581	* @see GMMR0FreeLargePage.
582	*/
583	typedef struct GMMFREELARGEPAGEREQ
584	{
585	/** The header. */
586	SUPVMMR0REQHDR Hdr;
587	/** The Page ID. */
588	uint32_t idPage;
589	} GMMFREELARGEPAGEREQ;
590	/** Pointer to a GMMR0FreePagesReq / VMMR0_DO_GMM_FREE_PAGES request buffer. */
591	typedef GMMFREELARGEPAGEREQ *PGMMFREELARGEPAGEREQ;
592
593	GMMR0DECL(int) GMMR0FreeLargePageReq(PGVM pGVM, VMCPUID idCpu, PGMMFREELARGEPAGEREQ pReq);
594
595	/** Maximum length of the shared module name string, terminator included. */
596	#define GMM_SHARED_MODULE_MAX_NAME_STRING 128
597	/** Maximum length of the shared module version string, terminator included. */
598	#define GMM_SHARED_MODULE_MAX_VERSION_STRING 16
599
600	/**
601	* Request buffer for GMMR0RegisterSharedModuleReq / VMMR0_DO_GMM_REGISTER_SHARED_MODULE.
602	* @see GMMR0RegisterSharedModule.
603	*/
604	typedef struct GMMREGISTERSHAREDMODULEREQ
605	{
606	/** The header. */
607	SUPVMMR0REQHDR Hdr;
608	/** Shared module size. */
609	uint32_t cbModule;
610	/** Number of included region descriptors */
611	uint32_t cRegions;
612	/** Base address of the shared module. */
613	RTGCPTR64 GCBaseAddr;
614	/** Guest OS type. */
615	VBOXOSFAMILY enmGuestOS;
616	/** return code. */
617	uint32_t rc;
618	/** Module name */
619	char szName[GMM_SHARED_MODULE_MAX_NAME_STRING];
620	/** Module version */
621	char szVersion[GMM_SHARED_MODULE_MAX_VERSION_STRING];
622	/** Shared region descriptor(s). */
623	VMMDEVSHAREDREGIONDESC aRegions[1];
624	} GMMREGISTERSHAREDMODULEREQ;
625	/** Pointer to a GMMR0RegisterSharedModuleReq / VMMR0_DO_GMM_REGISTER_SHARED_MODULE request buffer. */
626	typedef GMMREGISTERSHAREDMODULEREQ *PGMMREGISTERSHAREDMODULEREQ;
627
628	GMMR0DECL(int) GMMR0RegisterSharedModuleReq(PGVM pGVM, VMCPUID idCpu, PGMMREGISTERSHAREDMODULEREQ pReq);
629
630	/**
631	* Shared region descriptor
632	*/
633	typedef struct GMMSHAREDREGIONDESC
634	{
635	/** The page offset where the region starts. */
636	uint32_t off;
637	/** Region size - adjusted by the region offset and rounded up to a
638	* page. */
639	uint32_t cb;
640	/** Pointer to physical GMM page ID array. */
641	uint32_t *paidPages;
642	} GMMSHAREDREGIONDESC;
643	/** Pointer to a GMMSHAREDREGIONDESC. */
644	typedef GMMSHAREDREGIONDESC *PGMMSHAREDREGIONDESC;
645
646
647	/**
648	* Shared module registration info (global)
649	*/
650	typedef struct GMMSHAREDMODULE
651	{
652	/** Tree node (keyed by a hash of name & version). */
653	AVLLU32NODECORE Core;
654	/** Shared module size. */
655	uint32_t cbModule;
656	/** Number of included region descriptors */
657	uint32_t cRegions;
658	/** Number of users (VMs). */
659	uint32_t cUsers;
660	/** Guest OS family type. */
661	VBOXOSFAMILY enmGuestOS;
662	/** Module name */
663	char szName[GMM_SHARED_MODULE_MAX_NAME_STRING];
664	/** Module version */
665	char szVersion[GMM_SHARED_MODULE_MAX_VERSION_STRING];
666	/** Shared region descriptor(s). */
667	GMMSHAREDREGIONDESC aRegions[1];
668	} GMMSHAREDMODULE;
669	/** Pointer to a GMMSHAREDMODULE. */
670	typedef GMMSHAREDMODULE *PGMMSHAREDMODULE;
671
672	/**
673	* Page descriptor for GMMR0SharedModuleCheckRange
674	*/
675	typedef struct GMMSHAREDPAGEDESC
676	{
677	/** HC Physical address (in/out) */
678	RTHCPHYS HCPhys;
679	/** GC Physical address (in) */
680	RTGCPHYS GCPhys;
681	/** GMM page id. (in/out) */
682	uint32_t idPage;
683	/** CRC32 of the page in strict builds (0 if page not available).
684	* In non-strict build this serves as structure alignment. */
685	uint32_t u32StrictChecksum;
686	} GMMSHAREDPAGEDESC;
687	/** Pointer to a GMMSHAREDPAGEDESC. */
688	typedef GMMSHAREDPAGEDESC *PGMMSHAREDPAGEDESC;
689
690	GMMR0DECL(int) GMMR0SharedModuleCheckPage(PGVM pGVM, PGMMSHAREDMODULE pModule, uint32_t idxRegion, uint32_t idxPage,
691	PGMMSHAREDPAGEDESC pPageDesc);
692
693	/**
694	* Request buffer for GMMR0UnregisterSharedModuleReq / VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE.
695	* @see GMMR0UnregisterSharedModule.
696	*/
697	typedef struct GMMUNREGISTERSHAREDMODULEREQ
698	{
699	/** The header. */
700	SUPVMMR0REQHDR Hdr;
701	/** Shared module size. */
702	uint32_t cbModule;
703	/** Align at 8 byte boundary. */
704	uint32_t u32Alignment;
705	/** Base address of the shared module. */
706	RTGCPTR64 GCBaseAddr;
707	/** Module name */
708	char szName[GMM_SHARED_MODULE_MAX_NAME_STRING];
709	/** Module version */
710	char szVersion[GMM_SHARED_MODULE_MAX_VERSION_STRING];
711	} GMMUNREGISTERSHAREDMODULEREQ;
712	/** Pointer to a GMMR0UnregisterSharedModuleReq / VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE request buffer. */
713	typedef GMMUNREGISTERSHAREDMODULEREQ *PGMMUNREGISTERSHAREDMODULEREQ;
714
715	GMMR0DECL(int) GMMR0UnregisterSharedModuleReq(PGVM pGVM, VMCPUID idCpu, PGMMUNREGISTERSHAREDMODULEREQ pReq);
716
717	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
718	/**
719	* Request buffer for GMMR0FindDuplicatePageReq / VMMR0_DO_GMM_FIND_DUPLICATE_PAGE.
720	* @see GMMR0FindDuplicatePage.
721	*/
722	typedef struct GMMFINDDUPLICATEPAGEREQ
723	{
724	/** The header. */
725	SUPVMMR0REQHDR Hdr;
726	/** Page id. */
727	uint32_t idPage;
728	/** Duplicate flag (out) */
729	bool fDuplicate;
730	} GMMFINDDUPLICATEPAGEREQ;
731	/** Pointer to a GMMR0FindDuplicatePageReq / VMMR0_DO_GMM_FIND_DUPLICATE_PAGE request buffer. */
732	typedef GMMFINDDUPLICATEPAGEREQ *PGMMFINDDUPLICATEPAGEREQ;
733
734	GMMR0DECL(int) GMMR0FindDuplicatePageReq(PGVM pGVM, PGMMFINDDUPLICATEPAGEREQ pReq);
735	#endif /* VBOX_STRICT && HC_ARCH_BITS == 64 */
736
737
738	/**
739	* Request buffer for GMMR0QueryStatisticsReq / VMMR0_DO_GMM_QUERY_STATISTICS.
740	* @see GMMR0QueryStatistics.
741	*/
742	typedef struct GMMQUERYSTATISTICSSREQ
743	{
744	/** The header. */
745	SUPVMMR0REQHDR Hdr;
746	/** The support driver session. */
747	PSUPDRVSESSION pSession;
748	/** The statistics. */
749	GMMSTATS Stats;
750	} GMMQUERYSTATISTICSSREQ;
751	/** Pointer to a GMMR0QueryStatisticsReq / VMMR0_DO_GMM_QUERY_STATISTICS
752	* request buffer. */
753	typedef GMMQUERYSTATISTICSSREQ *PGMMQUERYSTATISTICSSREQ;
754
755	GMMR0DECL(int) GMMR0QueryStatisticsReq(PGVM pGVM, PGMMQUERYSTATISTICSSREQ pReq);
756
757
758	/**
759	* Request buffer for GMMR0ResetStatisticsReq / VMMR0_DO_GMM_RESET_STATISTICS.
760	* @see GMMR0ResetStatistics.
761	*/
762	typedef struct GMMRESETSTATISTICSSREQ
763	{
764	/** The header. */
765	SUPVMMR0REQHDR Hdr;
766	/** The support driver session. */
767	PSUPDRVSESSION pSession;
768	/** The statistics to reset.
769	* Any non-zero entry will be reset (if permitted). */
770	GMMSTATS Stats;
771	} GMMRESETSTATISTICSSREQ;
772	/** Pointer to a GMMR0ResetStatisticsReq / VMMR0_DO_GMM_RESET_STATISTICS
773	* request buffer. */
774	typedef GMMRESETSTATISTICSSREQ *PGMMRESETSTATISTICSSREQ;
775
776	GMMR0DECL(int) GMMR0ResetStatisticsReq(PGVM pGVM, PGMMRESETSTATISTICSSREQ pReq);
777
778
779
780	#ifdef IN_RING3
781	/** @defgroup grp_gmm_r3 The Global Memory Manager Ring-3 API Wrappers
782	* @{
783	*/
784	GMMR3DECL(int) GMMR3InitialReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages,
785	GMMOCPOLICY enmPolicy, GMMPRIORITY enmPriority);
786	GMMR3DECL(int) GMMR3UpdateReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages);
787	GMMR3DECL(int) GMMR3AllocatePagesPrepare(PVM pVM, PGMMALLOCATEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount);
788	GMMR3DECL(int) GMMR3AllocatePagesPerform(PVM pVM, PGMMALLOCATEPAGESREQ pReq);
789	GMMR3DECL(void) GMMR3AllocatePagesCleanup(PGMMALLOCATEPAGESREQ pReq);
790	GMMR3DECL(int) GMMR3FreePagesPrepare(PVM pVM, PGMMFREEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount);
791	GMMR3DECL(void) GMMR3FreePagesRePrep(PVM pVM, PGMMFREEPAGESREQ pReq, uint32_t cPages, GMMACCOUNT enmAccount);
792	GMMR3DECL(int) GMMR3FreePagesPerform(PVM pVM, PGMMFREEPAGESREQ pReq, uint32_t cActualPages);
793	GMMR3DECL(void) GMMR3FreePagesCleanup(PGMMFREEPAGESREQ pReq);
794	GMMR3DECL(void) GMMR3FreeAllocatedPages(PVM pVM, GMMALLOCATEPAGESREQ const *pAllocReq);
795	GMMR3DECL(int) GMMR3AllocateLargePage(PVM pVM, uint32_t cbPage);
796	GMMR3DECL(int) GMMR3FreeLargePage(PVM pVM, uint32_t idPage);
797	GMMR3DECL(int) GMMR3MapUnmapChunk(PVM pVM, uint32_t idChunkMap, uint32_t idChunkUnmap, PRTR3PTR ppvR3);
798	GMMR3DECL(int) GMMR3QueryHypervisorMemoryStats(PVM pVM, uint64_t pcTotalAllocPages, uint64_t pcTotalFreePages, uint64_t pcTotalBalloonPages, uint64_t puTotalBalloonSize);
799	GMMR3DECL(int) GMMR3QueryMemoryStats(PVM pVM, uint64_t pcAllocPages, uint64_t pcMaxPages, uint64_t *pcBalloonPages);
800	GMMR3DECL(int) GMMR3BalloonedPages(PVM pVM, GMMBALLOONACTION enmAction, uint32_t cBalloonedPages);
801	GMMR3DECL(int) GMMR3RegisterSharedModule(PVM pVM, PGMMREGISTERSHAREDMODULEREQ pReq);
802	GMMR3DECL(int) GMMR3UnregisterSharedModule(PVM pVM, PGMMUNREGISTERSHAREDMODULEREQ pReq);
803	GMMR3DECL(int) GMMR3CheckSharedModules(PVM pVM);
804	GMMR3DECL(int) GMMR3ResetSharedModules(PVM pVM);
805
806	# if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
807	GMMR3DECL(bool) GMMR3IsDuplicatePage(PVM pVM, uint32_t idPage);
808	# endif
809
810	/** @} */
811	#endif /* IN_RING3 */
812
813	/** @} */
814
815	RT_C_DECLS_END
816
817	#endif /* !VBOX_INCLUDED_vmm_gmm_h */
818

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source: vbox/trunk/include/VBox/vmm/gmm.h@ 93963

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