| 1 | /** @file
|
|---|
| 2 | * GMM - The Global Memory Manager.
|
|---|
| 3 | */
|
|---|
| 4 |
|
|---|
| 5 | /*
|
|---|
| 6 | * Copyright (C) 2007 InnoTek Systemberatung GmbH
|
|---|
| 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 as published by the Free Software Foundation,
|
|---|
| 12 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
|
|---|
| 13 | * distribution. VirtualBox OSE is distributed in the hope that it will
|
|---|
| 14 | * be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 15 | *
|
|---|
| 16 | */
|
|---|
| 17 |
|
|---|
| 18 | #ifndef ___VBox_gmm_h
|
|---|
| 19 | #define ___VBox_gmm_h
|
|---|
| 20 |
|
|---|
| 21 | #include <VBox/types.h>
|
|---|
| 22 | #include <VBox/gvmm.h>
|
|---|
| 23 | #include <VBox/sup.h>
|
|---|
| 24 |
|
|---|
| 25 | __BEGIN_DECLS
|
|---|
| 26 |
|
|---|
| 27 | /** @defgroup grp_gmm GMM - The Global Memory Manager
|
|---|
| 28 | * @{
|
|---|
| 29 | */
|
|---|
| 30 |
|
|---|
| 31 | /** @def IN_GMM_R0
|
|---|
| 32 | * Used to indicate whether we're inside the same link module as the ring 0
|
|---|
| 33 | * part of the Global Memory Manager or not.
|
|---|
| 34 | */
|
|---|
| 35 | /** @def GMMR0DECL
|
|---|
| 36 | * Ring 0 GMM export or import declaration.
|
|---|
| 37 | * @param type The return type of the function declaration.
|
|---|
| 38 | */
|
|---|
| 39 | #ifdef IN_GMM_R0
|
|---|
| 40 | # define GMMR0DECL(type) DECLEXPORT(type) VBOXCALL
|
|---|
| 41 | #else
|
|---|
| 42 | # define GMMR0DECL(type) DECLIMPORT(type) VBOXCALL
|
|---|
| 43 | #endif
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | /** The chunk shift. (2^20 = 1 MB) */
|
|---|
| 47 | #define GMM_CHUNK_SHIFT 20
|
|---|
| 48 | /** The allocation chunk size. */
|
|---|
| 49 | #define GMM_CHUNK_SIZE (1U << GMM_CHUNK_SHIFT)
|
|---|
| 50 | /** The shift factor for converting a page id into a chunk id. */
|
|---|
| 51 | #define GMM_CHUNKID_SHIFT (GMM_CHUNK_SHIFT - PAGE_SHIFT)
|
|---|
| 52 | /** The last valid Chunk ID value. */
|
|---|
| 53 | #define GMM_CHUNK_LAST (GMM_PAGEID_LAST >> GMM_CHUNKID_SHIFT)
|
|---|
| 54 | /** The last valid Page ID value.
|
|---|
| 55 | * The current limit is 2^28 - 1, or almost 1TB if you like.
|
|---|
| 56 | * The constraints are currently dictated by PGMPAGE. */
|
|---|
| 57 | #define GMM_PAGEID_LAST (RT_BIT_32(28) - 1)
|
|---|
| 58 | /** The NIL Chunk ID value. */
|
|---|
| 59 | #define NIL_GMM_CHUNKID 0
|
|---|
| 60 | /** The NIL Page ID value. */
|
|---|
| 61 | #define NIL_GMM_PAGEID 0
|
|---|
| 62 |
|
|---|
| 63 | #if 0 /* wrong - these are guest page pfns and not page ids! */
|
|---|
| 64 | /** Special Page ID used by unassigned pages. */
|
|---|
| 65 | #define GMM_PAGEID_UNASSIGNED 0x0fffffffU
|
|---|
| 66 | /** Special Page ID used by unsharable pages.
|
|---|
| 67 | * Like MMIO2, shadow and heap. This is for later, obviously. */
|
|---|
| 68 | #define GMM_PAGEID_UNSHARABLE 0x0ffffffeU
|
|---|
| 69 | /** The end of the valid Page IDs. This is the first special one. */
|
|---|
| 70 | #define GMM_PAGEID_END 0x0ffffff0U
|
|---|
| 71 | #endif
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | /**
|
|---|
| 75 | * Over-commitment policy.
|
|---|
| 76 | */
|
|---|
| 77 | typedef enum GMMOCPOLICY
|
|---|
| 78 | {
|
|---|
| 79 | /** The usual invalid 0 value. */
|
|---|
| 80 | GMMOCPOLICY_INVALID = 0,
|
|---|
| 81 | /** No over-commitment, fully backed.
|
|---|
| 82 | * The GMM guarantees that it will be able to allocate all of the
|
|---|
| 83 | * guest RAM for a VM with OC policy. */
|
|---|
| 84 | GMMOCPOLICY_NO_OC,
|
|---|
| 85 | /** to-be-determined. */
|
|---|
| 86 | GMMOCPOLICY_TBD,
|
|---|
| 87 | /** The end of the valid policy range. */
|
|---|
| 88 | GMMOCPOLICY_END,
|
|---|
| 89 | /** The usual 32-bit hack. */
|
|---|
| 90 | GMMOCPOLICY_32BIT_HACK = 0x7fffffff
|
|---|
| 91 | } GMMOCPOLICY;
|
|---|
| 92 |
|
|---|
| 93 | /**
|
|---|
| 94 | * VM / Memory priority.
|
|---|
| 95 | */
|
|---|
| 96 | typedef enum GMMPRIORITY
|
|---|
| 97 | {
|
|---|
| 98 | /** The usual invalid 0 value. */
|
|---|
| 99 | GMMPRIORITY_INVALID = 0,
|
|---|
| 100 | /** High.
|
|---|
| 101 | * When ballooning, ask these VMs last.
|
|---|
| 102 | * When running out of memory, try not to interrupt these VMs. */
|
|---|
| 103 | GMMPRIORITY_HIGH,
|
|---|
| 104 | /** Normal.
|
|---|
| 105 | * When ballooning, don't wait to ask these.
|
|---|
| 106 | * When running out of memory, pause, save and/or kill these VMs. */
|
|---|
| 107 | GMMPRIORITY_NORMAL,
|
|---|
| 108 | /** Low.
|
|---|
| 109 | * When ballooning, maximize these first.
|
|---|
| 110 | * When running out of memory, save or kill these VMs. */
|
|---|
| 111 | GMMPRIORITY_LOW,
|
|---|
| 112 | /** The end of the valid priority range. */
|
|---|
| 113 | GMMPRIORITY_END = 0,
|
|---|
| 114 | /** The custom 32-bit type blowup. */
|
|---|
| 115 | GMMPRIORITY_32BIT_HACK = 0x7fffffff
|
|---|
| 116 | } GMMPRIORITY;
|
|---|
| 117 |
|
|---|
| 118 |
|
|---|
| 119 | /**
|
|---|
| 120 | * GMM Memory Accounts.
|
|---|
| 121 | */
|
|---|
| 122 | typedef enum GMMACCOUNT
|
|---|
| 123 | {
|
|---|
| 124 | /** The customary invalid zero entry. */
|
|---|
| 125 | GMMACCOUNT_INVALID = 0,
|
|---|
| 126 | /** Account with the base allocations. */
|
|---|
| 127 | GMMACCOUNT_BASE,
|
|---|
| 128 | /** Account with the shadow allocations. */
|
|---|
| 129 | GMMACCOUNT_SHADOW,
|
|---|
| 130 | /** Account with the fixed allocations. */
|
|---|
| 131 | GMMACCOUNT_FIXED,
|
|---|
| 132 | /** The end of the valid values. */
|
|---|
| 133 | GMMACCOUNT_END,
|
|---|
| 134 | /** The usual 32-bit value to finish it off. */
|
|---|
| 135 | GMMACCOUNT_32BIT_HACK = 0x7fffffff
|
|---|
| 136 | } GMMACCOUNT;
|
|---|
| 137 |
|
|---|
| 138 |
|
|---|
| 139 | /**
|
|---|
| 140 | * A page descriptor for use when freeing pages.
|
|---|
| 141 | * See GMMR0FreePages, GMMR0BalloonedPages.
|
|---|
| 142 | */
|
|---|
| 143 | typedef struct GMMFREEPAGEDESC
|
|---|
| 144 | {
|
|---|
| 145 | /** The Page ID of the page to be freed. */
|
|---|
| 146 | uint32_t idPage;
|
|---|
| 147 | } GMMFREEPAGEDESC;
|
|---|
| 148 | /** Pointer to a page descriptor for freeing pages. */
|
|---|
| 149 | typedef GMMFREEPAGEDESC *PGMMFREEPAGEDESC;
|
|---|
| 150 |
|
|---|
| 151 |
|
|---|
| 152 | /**
|
|---|
| 153 | * A page descriptor for use when updating and allocating pages.
|
|---|
| 154 | *
|
|---|
| 155 | * This is a bit complicated because we want to do as much as possible
|
|---|
| 156 | * with the same structure.
|
|---|
| 157 | */
|
|---|
| 158 | typedef struct GMMPAGEDESC
|
|---|
| 159 | {
|
|---|
| 160 | /** The physical address of the page.
|
|---|
| 161 | *
|
|---|
| 162 | * @input GMMR0AllocateHandyPages expects the guest physical address
|
|---|
| 163 | * to update the GMMPAGE structure with. Pass GMM_GCPHYS_UNSHARABLE
|
|---|
| 164 | * when appropriate and NIL_RTHCPHYS when the page wasn't used
|
|---|
| 165 | * for any specific guest address.
|
|---|
| 166 | *
|
|---|
| 167 | * GMMR0AllocatePage expects the guest physical address to put in
|
|---|
| 168 | * the GMMPAGE structure for the page it allocates for this entry.
|
|---|
| 169 | * Pass NIL_RTHCPHYS and GMM_GCPHYS_UNSHARABLE as above.
|
|---|
| 170 | *
|
|---|
| 171 | * @output The host physical address of the allocated page.
|
|---|
| 172 | * NIL_RTHCPHYS on allocation failure.
|
|---|
| 173 | *
|
|---|
| 174 | * ASSUMES: sizeof(RTHCPHYS) >= sizeof(RTGCPHYS).
|
|---|
| 175 | */
|
|---|
| 176 | RTHCPHYS HCPhysGCPhys;
|
|---|
| 177 |
|
|---|
| 178 | /** The Page ID.
|
|---|
| 179 | *
|
|---|
| 180 | * @intput GMMR0AllocateHandyPages expects the Page ID of the page to
|
|---|
| 181 | * update here. NIL_GMM_PAGEID means no page should be updated.
|
|---|
| 182 | *
|
|---|
| 183 | * GMMR0AllocatePages requires this to be initialized to
|
|---|
| 184 | * NIL_GMM_PAGEID currently.
|
|---|
| 185 | *
|
|---|
| 186 | * @output The ID of the page, NIL_GMM_PAGEID if the allocation failed.
|
|---|
| 187 | */
|
|---|
| 188 | uint32_t idPage;
|
|---|
| 189 |
|
|---|
| 190 | /** The Page ID of the shared page was replaced by this page.
|
|---|
| 191 | *
|
|---|
| 192 | * @input GMMR0AllocateHandyPages expects this to indicate a shared
|
|---|
| 193 | * page that has been replaced by this page and should have its
|
|---|
| 194 | * reference counter decremented and perhaps be freed up. Use
|
|---|
| 195 | * NIL_GMM_PAGEID if no shared page was involved.
|
|---|
| 196 | *
|
|---|
| 197 | * All other APIs expects NIL_GMM_PAGEID here.
|
|---|
| 198 | *
|
|---|
| 199 | * @output All APIs sets this to NIL_GMM_PAGEID.
|
|---|
| 200 | */
|
|---|
| 201 | uint32_t idSharedPage;
|
|---|
| 202 | } GMMPAGEDESC;
|
|---|
| 203 | AssertCompileSize(GMMPAGEDESC, 16);
|
|---|
| 204 | /** Pointer to a page allocation. */
|
|---|
| 205 | typedef GMMPAGEDESC *PGMMPAGEDESC;
|
|---|
| 206 |
|
|---|
| 207 | /** GMMPAGEDESC::HCPhysGCPhys value that indicates that the page is shared. */
|
|---|
| 208 | #define GMM_GCPHYS_UNSHARABLE (RTHCPHYS)(0xfffffff0)
|
|---|
| 209 |
|
|---|
| 210 | GMMR0DECL(int) GMMR0Init(void);
|
|---|
| 211 | GMMR0DECL(void) GMMR0Term(void);
|
|---|
| 212 | GMMR0DECL(void) GMMR0InitPerVMData(PGVM pGVM);
|
|---|
| 213 | GMMR0DECL(void) GMMR0CleanupVM(PGVM pGVM);
|
|---|
| 214 | GMMR0DECL(int) GMMR0InitialReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages,
|
|---|
| 215 | GMMOCPOLICY enmPolicy, GMMPRIORITY enmPriority);
|
|---|
| 216 | GMMR0DECL(int) GMMR0UpdateReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages);
|
|---|
| 217 | GMMR0DECL(int) GMMR0AllocateHandyPages(PVM pVM, uint32_t cPagesToUpdate, uint32_t cPagesToAlloc, PGMMPAGEDESC paPages);
|
|---|
| 218 | GMMR0DECL(int) GMMR0AllocatePages(PVM pVM, uint32_t cPages, PGMMPAGEDESC paPages, GMMACCOUNT enmAccount);
|
|---|
| 219 | GMMR0DECL(int) GMMR0FreePages(PVM pVM, uint32_t cPages, PGMMFREEPAGEDESC paPages, GMMACCOUNT enmAccount);
|
|---|
| 220 | GMMR0DECL(int) GMMR0BalloonedPages(PVM pVM, uint32_t cBalloonedPages, uint32_t cPagesToFree, PGMMFREEPAGEDESC paPages);
|
|---|
| 221 | GMMR0DECL(int) GMMR0FreeMapUnmapChunk(PVM pVM, uint32_t idChunkMap, uint32_t idChunkUnmap, PRTR3PTR pvR3);
|
|---|
| 222 | GMMR0DECL(int) GMMR0SeedChunk(PVM pVM, RTR3PTR pvR3);
|
|---|
| 223 |
|
|---|
| 224 |
|
|---|
| 225 | /**
|
|---|
| 226 | * Request buffer for GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION.
|
|---|
| 227 | * @see GMMR0InitialReservation
|
|---|
| 228 | */
|
|---|
| 229 | typedef struct GMMINITIALRESERVATIONREQ
|
|---|
| 230 | {
|
|---|
| 231 | /** The header. */
|
|---|
| 232 | SUPVMMR0REQHDR Hdr;
|
|---|
| 233 | uint64_t cBasePages; /**< @see GMMR0InitialReservation */
|
|---|
| 234 | uint32_t cShadowPages; /**< @see GMMR0InitialReservation */
|
|---|
| 235 | uint32_t cFixedPages; /**< @see GMMR0InitialReservation */
|
|---|
| 236 | GMMOCPOLICY enmPolicy; /**< @see GMMR0InitialReservation */
|
|---|
| 237 | GMMPRIORITY enmPriority; /**< @see GMMR0InitialReservation */
|
|---|
| 238 | } GMMINITIALRESERVATIONREQ;
|
|---|
| 239 | /** Pointer to a GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION request buffer. */
|
|---|
| 240 | typedef GMMINITIALRESERVATIONREQ *PGMMINITIALRESERVATIONREQ;
|
|---|
| 241 |
|
|---|
| 242 | GMMR0DECL(int) GMMR0InitialReservationReq(PVM pVM, PGMMINITIALRESERVATIONREQ pReq);
|
|---|
| 243 |
|
|---|
| 244 |
|
|---|
| 245 | /**
|
|---|
| 246 | * Request buffer for GMMR0UpdateReservationReq / VMMR0_DO_GMM_UPDATE_RESERVATION.
|
|---|
| 247 | * @see GMMR0UpdateReservation
|
|---|
| 248 | */
|
|---|
| 249 | typedef struct GMMUPDATERESERVATIONREQ
|
|---|
| 250 | {
|
|---|
| 251 | /** The header. */
|
|---|
| 252 | SUPVMMR0REQHDR Hdr;
|
|---|
| 253 | uint64_t cBasePages; /**< @see GMMR0UpdateReservation */
|
|---|
| 254 | uint32_t cShadowPages; /**< @see GMMR0UpdateReservation */
|
|---|
| 255 | uint32_t cFixedPages; /**< @see GMMR0UpdateReservation */
|
|---|
| 256 | } GMMUPDATERESERVATIONREQ;
|
|---|
| 257 | /** Pointer to a GMMR0InitialReservationReq / VMMR0_DO_GMM_INITIAL_RESERVATION request buffer. */
|
|---|
| 258 | typedef GMMUPDATERESERVATIONREQ *PGMMUPDATERESERVATIONREQ;
|
|---|
| 259 |
|
|---|
| 260 | GMMR0DECL(int) GMMR0UpdateReservationReq(PVM pVM, PGMMUPDATERESERVATIONREQ pReq);
|
|---|
| 261 |
|
|---|
| 262 |
|
|---|
| 263 | /**
|
|---|
| 264 | * Request buffer for GMMR0AllocatePagesReq / VMMR0_DO_GMM_ALLOCATE_PAGES.
|
|---|
| 265 | * @see GMMR0AllocatePages.
|
|---|
| 266 | */
|
|---|
| 267 | typedef struct GMMALLOCATEPAGESREQ
|
|---|
| 268 | {
|
|---|
| 269 | /** The header. */
|
|---|
| 270 | SUPVMMR0REQHDR Hdr;
|
|---|
| 271 | /** The account to charge the allocation to. */
|
|---|
| 272 | GMMACCOUNT enmAccount;
|
|---|
| 273 | /** The number of pages to allocate. */
|
|---|
| 274 | uint32_t cPages;
|
|---|
| 275 | /** Array of page descriptors. */
|
|---|
| 276 | GMMPAGEDESC aPages[1];
|
|---|
| 277 | } GMMALLOCATEPAGESREQ;
|
|---|
| 278 | /** Pointer to a GMMR0AllocatePagesReq / VMMR0_DO_GMM_ALLOCATE_PAGES request buffer. */
|
|---|
| 279 | typedef GMMALLOCATEPAGESREQ *PGMMALLOCATEPAGESREQ;
|
|---|
| 280 |
|
|---|
| 281 | GMMR0DECL(int) GMMR0AllocatePagesReq(PVM pVM, PGMMALLOCATEPAGESREQ pReq);
|
|---|
| 282 |
|
|---|
| 283 |
|
|---|
| 284 | /**
|
|---|
| 285 | * Request buffer for GMMR0FreePagesReq / VMMR0_DO_GMM_FREE_PAGES.
|
|---|
| 286 | * @see GMMR0FreePages.
|
|---|
| 287 | */
|
|---|
| 288 | typedef struct GMMFREEPAGESREQ
|
|---|
| 289 | {
|
|---|
| 290 | /** The header. */
|
|---|
| 291 | SUPVMMR0REQHDR Hdr;
|
|---|
| 292 | /** The account this relates to. */
|
|---|
| 293 | GMMACCOUNT enmAccount;
|
|---|
| 294 | /** The number of pages to free. */
|
|---|
| 295 | uint32_t cPages;
|
|---|
| 296 | /** Array of free page descriptors. */
|
|---|
| 297 | GMMFREEPAGEDESC aPages[1];
|
|---|
| 298 | } GMMFREEPAGESREQ;
|
|---|
| 299 | /** Pointer to a GMMR0FreePagesReq / VMMR0_DO_GMM_FREE_PAGES request buffer. */
|
|---|
| 300 | typedef GMMFREEPAGESREQ *PGMMFREEPAGESREQ;
|
|---|
| 301 |
|
|---|
| 302 | GMMR0DECL(int) GMMR0FreePagesReq(PVM pVM, PGMMFREEPAGESREQ pReq);
|
|---|
| 303 |
|
|---|
| 304 |
|
|---|
| 305 | /**
|
|---|
| 306 | * Request buffer for GMMR0BalloonedPagesReq / VMMR0_DO_GMM_BALLOONED_PAGES.
|
|---|
| 307 | * @see GMMR0BalloonedPages.
|
|---|
| 308 | */
|
|---|
| 309 | typedef struct GMMBALLOONEDPAGESREQ
|
|---|
| 310 | {
|
|---|
| 311 | /** The header. */
|
|---|
| 312 | SUPVMMR0REQHDR Hdr;
|
|---|
| 313 | /** The number of ballooned pages. */
|
|---|
| 314 | uint32_t cBalloonedPages;
|
|---|
| 315 | /** The number of pages to free. */
|
|---|
| 316 | uint32_t cPagesToFree;
|
|---|
| 317 | /** Array of free page descriptors. */
|
|---|
| 318 | GMMFREEPAGEDESC aPages[1];
|
|---|
| 319 | } GMMBALLOONEDPAGESREQ;
|
|---|
| 320 | /** Pointer to a GMMR0BalloonedPagesReq / VMMR0_DO_GMM_BALLOONED_PAGES request buffer. */
|
|---|
| 321 | typedef GMMBALLOONEDPAGESREQ *PGMMBALLOONEDPAGESREQ;
|
|---|
| 322 |
|
|---|
| 323 | GMMR0DECL(int) GMMR0BalloonedPagesReq(PVM pVM, PGMMBALLOONEDPAGESREQ pReq);
|
|---|
| 324 |
|
|---|
| 325 |
|
|---|
| 326 | /**
|
|---|
| 327 | * Request buffer for GMMR0FreeMapUnmapChunkReq / VMMR0_DO_GMM_MAP_UNMAP_CHUNK.
|
|---|
| 328 | * @see GMMR0FreeMapUnmapChunk
|
|---|
| 329 | */
|
|---|
| 330 | typedef struct GMMMAPUNMAPCHUNKREQ
|
|---|
| 331 | {
|
|---|
| 332 | /** The header. */
|
|---|
| 333 | SUPVMMR0REQHDR Hdr;
|
|---|
| 334 | /** The chunk to map, UINT32_MAX if unmap only. (IN) */
|
|---|
| 335 | uint32_t idChunkMap;
|
|---|
| 336 | /** The chunk to unmap, UINT32_MAX if map only. (IN) */
|
|---|
| 337 | uint32_t idChunkUnmap;
|
|---|
| 338 | /** Where the mapping address is returned. (OUT) */
|
|---|
| 339 | RTR3PTR pvR3;
|
|---|
| 340 | } GMMMAPUNMAPCHUNKREQ;
|
|---|
| 341 | /** Pointer to a GMMR0FreeMapUnmapChunkReq / VMMR0_DO_GMM_MAP_UNMAP_CHUNK request buffer. */
|
|---|
| 342 | typedef GMMMAPUNMAPCHUNKREQ *PGMMMAPUNMAPCHUNKREQ;
|
|---|
| 343 |
|
|---|
| 344 | GMMR0DECL(int) GMMR0FreeMapUnmapChunkReq(PVM pVM, PGMMMAPUNMAPCHUNKREQ pReq);
|
|---|
| 345 |
|
|---|
| 346 |
|
|---|
| 347 | /** @} */
|
|---|
| 348 |
|
|---|
| 349 | __END_DECLS
|
|---|
| 350 |
|
|---|
| 351 | #endif
|
|---|
| 352 |
|
|---|
