1 /* 2 * QEMU migration/snapshot declarations 3 * 4 * Copyright (c) 2009-2011 Red Hat, Inc. 5 * 6 * Original author: Juan Quintela <quintela@redhat.com> 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 */ 26 27 #ifndef QEMU_VMSTATE_H 28 #define QEMU_VMSTATE_H 29 30 #ifndef CONFIG_USER_ONLY 31 #include "migration/qemu-file.h" 32 #endif 33 #include "migration/qjson.h" 34 35 typedef void SaveStateHandler(QEMUFile *f, void *opaque); 36 typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id); 37 38 typedef struct SaveVMHandlers { 39 /* This runs inside the iothread lock. */ 40 void (*set_params)(const MigrationParams *params, void * opaque); 41 SaveStateHandler *save_state; 42 43 void (*cleanup)(void *opaque); 44 int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque); 45 int (*save_live_complete_precopy)(QEMUFile *f, void *opaque); 46 47 /* This runs both outside and inside the iothread lock. */ 48 bool (*is_active)(void *opaque); 49 50 /* This runs outside the iothread lock in the migration case, and 51 * within the lock in the savevm case. The callback had better only 52 * use data that is local to the migration thread or protected 53 * by other locks. 54 */ 55 int (*save_live_iterate)(QEMUFile *f, void *opaque); 56 57 /* This runs outside the iothread lock! */ 58 int (*save_live_setup)(QEMUFile *f, void *opaque); 59 void (*save_live_pending)(QEMUFile *f, void *opaque, 60 uint64_t threshold_size, 61 uint64_t *non_postcopiable_pending, 62 uint64_t *postcopiable_pending); 63 LoadStateHandler *load_state; 64 } SaveVMHandlers; 65 66 int register_savevm(DeviceState *dev, 67 const char *idstr, 68 int instance_id, 69 int version_id, 70 SaveStateHandler *save_state, 71 LoadStateHandler *load_state, 72 void *opaque); 73 74 int register_savevm_live(DeviceState *dev, 75 const char *idstr, 76 int instance_id, 77 int version_id, 78 SaveVMHandlers *ops, 79 void *opaque); 80 81 void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque); 82 83 typedef struct VMStateInfo VMStateInfo; 84 typedef struct VMStateDescription VMStateDescription; 85 typedef struct VMStateField VMStateField; 86 87 /* VMStateInfo allows customized migration of objects that don't fit in 88 * any category in VMStateFlags. Additional information is always passed 89 * into get and put in terms of field and vmdesc parameters. However 90 * these two parameters should only be used in cases when customized 91 * handling is needed, such as QTAILQ. For primitive data types such as 92 * integer, field and vmdesc parameters should be ignored inside get/put. 93 */ 94 struct VMStateInfo { 95 const char *name; 96 int (*get)(QEMUFile *f, void *pv, size_t size, VMStateField *field); 97 int (*put)(QEMUFile *f, void *pv, size_t size, VMStateField *field, 98 QJSON *vmdesc); 99 }; 100 101 enum VMStateFlags { 102 /* Ignored */ 103 VMS_SINGLE = 0x001, 104 105 /* The struct member at opaque + VMStateField.offset is a pointer 106 * to the actual field (e.g. struct a { uint8_t *b; 107 * }). Dereference the pointer before using it as basis for 108 * further pointer arithmetic (see e.g. VMS_ARRAY). Does not 109 * affect the meaning of VMStateField.num_offset or 110 * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for 111 * those. */ 112 VMS_POINTER = 0x002, 113 114 /* The field is an array of fixed size. VMStateField.num contains 115 * the number of entries in the array. The size of each entry is 116 * given by VMStateField.size and / or opaque + 117 * VMStateField.size_offset; see VMS_VBUFFER and 118 * VMS_MULTIPLY. Each array entry will be processed individually 119 * (VMStateField.info.get()/put() if VMS_STRUCT is not set, 120 * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not 121 * be combined with VMS_VARRAY*. */ 122 VMS_ARRAY = 0x004, 123 124 /* The field is itself a struct, containing one or more 125 * fields. Recurse into VMStateField.vmsd. Most useful in 126 * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each 127 * array entry. */ 128 VMS_STRUCT = 0x008, 129 130 /* The field is an array of variable size. The int32_t at opaque + 131 * VMStateField.num_offset contains the number of entries in the 132 * array. See the VMS_ARRAY description regarding array handling 133 * in general. May not be combined with VMS_ARRAY or any other 134 * VMS_VARRAY*. */ 135 VMS_VARRAY_INT32 = 0x010, 136 137 /* Ignored */ 138 VMS_BUFFER = 0x020, 139 140 /* The field is a (fixed-size or variable-size) array of pointers 141 * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry 142 * before using it. Note: Does not imply any one of VMS_ARRAY / 143 * VMS_VARRAY*; these need to be set explicitly. */ 144 VMS_ARRAY_OF_POINTER = 0x040, 145 146 /* The field is an array of variable size. The uint16_t at opaque 147 * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) 148 * contains the number of entries in the array. See the VMS_ARRAY 149 * description regarding array handling in general. May not be 150 * combined with VMS_ARRAY or any other VMS_VARRAY*. */ 151 VMS_VARRAY_UINT16 = 0x080, 152 153 /* The size of the individual entries (a single array entry if 154 * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if 155 * neither is set) is variable (i.e. not known at compile-time), 156 * but the same for all entries. Use the int32_t at opaque + 157 * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine 158 * the size of each (and every) entry. */ 159 VMS_VBUFFER = 0x100, 160 161 /* Multiply the entry size given by the int32_t at opaque + 162 * VMStateField.size_offset (see VMS_VBUFFER description) with 163 * VMStateField.size to determine the number of bytes to be 164 * allocated. Only valid in combination with VMS_VBUFFER. */ 165 VMS_MULTIPLY = 0x200, 166 167 /* The field is an array of variable size. The uint8_t at opaque + 168 * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) 169 * contains the number of entries in the array. See the VMS_ARRAY 170 * description regarding array handling in general. May not be 171 * combined with VMS_ARRAY or any other VMS_VARRAY*. */ 172 VMS_VARRAY_UINT8 = 0x400, 173 174 /* The field is an array of variable size. The uint32_t at opaque 175 * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) 176 * contains the number of entries in the array. See the VMS_ARRAY 177 * description regarding array handling in general. May not be 178 * combined with VMS_ARRAY or any other VMS_VARRAY*. */ 179 VMS_VARRAY_UINT32 = 0x800, 180 181 /* Fail loading the serialised VM state if this field is missing 182 * from the input. */ 183 VMS_MUST_EXIST = 0x1000, 184 185 /* When loading serialised VM state, allocate memory for the 186 * (entire) field. Only valid in combination with 187 * VMS_POINTER. Note: Not all combinations with other flags are 188 * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't 189 * cause the individual entries to be allocated. */ 190 VMS_ALLOC = 0x2000, 191 192 /* Multiply the number of entries given by the integer at opaque + 193 * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num 194 * to determine the number of entries in the array. Only valid in 195 * combination with one of VMS_VARRAY*. */ 196 VMS_MULTIPLY_ELEMENTS = 0x4000, 197 }; 198 199 typedef enum { 200 MIG_PRI_DEFAULT = 0, 201 MIG_PRI_IOMMU, /* Must happen before PCI devices */ 202 MIG_PRI_MAX, 203 } MigrationPriority; 204 205 struct VMStateField { 206 const char *name; 207 size_t offset; 208 size_t size; 209 size_t start; 210 int num; 211 size_t num_offset; 212 size_t size_offset; 213 const VMStateInfo *info; 214 enum VMStateFlags flags; 215 const VMStateDescription *vmsd; 216 int version_id; 217 bool (*field_exists)(void *opaque, int version_id); 218 }; 219 220 struct VMStateDescription { 221 const char *name; 222 int unmigratable; 223 int version_id; 224 int minimum_version_id; 225 int minimum_version_id_old; 226 MigrationPriority priority; 227 LoadStateHandler *load_state_old; 228 int (*pre_load)(void *opaque); 229 int (*post_load)(void *opaque, int version_id); 230 void (*pre_save)(void *opaque); 231 bool (*needed)(void *opaque); 232 VMStateField *fields; 233 const VMStateDescription **subsections; 234 }; 235 236 extern const VMStateDescription vmstate_dummy; 237 238 extern const VMStateInfo vmstate_info_bool; 239 240 extern const VMStateInfo vmstate_info_int8; 241 extern const VMStateInfo vmstate_info_int16; 242 extern const VMStateInfo vmstate_info_int32; 243 extern const VMStateInfo vmstate_info_int64; 244 245 extern const VMStateInfo vmstate_info_uint8_equal; 246 extern const VMStateInfo vmstate_info_uint16_equal; 247 extern const VMStateInfo vmstate_info_int32_equal; 248 extern const VMStateInfo vmstate_info_uint32_equal; 249 extern const VMStateInfo vmstate_info_uint64_equal; 250 extern const VMStateInfo vmstate_info_int32_le; 251 252 extern const VMStateInfo vmstate_info_uint8; 253 extern const VMStateInfo vmstate_info_uint16; 254 extern const VMStateInfo vmstate_info_uint32; 255 extern const VMStateInfo vmstate_info_uint64; 256 257 /** Put this in the stream when migrating a null pointer.*/ 258 #define VMS_NULLPTR_MARKER (0x30U) /* '0' */ 259 extern const VMStateInfo vmstate_info_nullptr; 260 261 extern const VMStateInfo vmstate_info_float64; 262 extern const VMStateInfo vmstate_info_cpudouble; 263 264 extern const VMStateInfo vmstate_info_timer; 265 extern const VMStateInfo vmstate_info_buffer; 266 extern const VMStateInfo vmstate_info_unused_buffer; 267 extern const VMStateInfo vmstate_info_tmp; 268 extern const VMStateInfo vmstate_info_bitmap; 269 extern const VMStateInfo vmstate_info_qtailq; 270 271 #define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0) 272 #define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0) 273 #define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0) 274 275 #define vmstate_offset_value(_state, _field, _type) \ 276 (offsetof(_state, _field) + \ 277 type_check(_type, typeof_field(_state, _field))) 278 279 #define vmstate_offset_pointer(_state, _field, _type) \ 280 (offsetof(_state, _field) + \ 281 type_check_pointer(_type, typeof_field(_state, _field))) 282 283 #define vmstate_offset_array(_state, _field, _type, _num) \ 284 (offsetof(_state, _field) + \ 285 type_check_array(_type, typeof_field(_state, _field), _num)) 286 287 #define vmstate_offset_2darray(_state, _field, _type, _n1, _n2) \ 288 (offsetof(_state, _field) + \ 289 type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2)) 290 291 #define vmstate_offset_sub_array(_state, _field, _type, _start) \ 292 vmstate_offset_value(_state, _field[_start], _type) 293 294 #define vmstate_offset_buffer(_state, _field) \ 295 vmstate_offset_array(_state, _field, uint8_t, \ 296 sizeof(typeof_field(_state, _field))) 297 298 #define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \ 299 .name = (stringify(_field)), \ 300 .version_id = (_version), \ 301 .field_exists = (_test), \ 302 .size = sizeof(_type), \ 303 .info = &(_info), \ 304 .flags = VMS_SINGLE, \ 305 .offset = vmstate_offset_value(_state, _field, _type), \ 306 } 307 308 /* Validate state using a boolean predicate. */ 309 #define VMSTATE_VALIDATE(_name, _test) { \ 310 .name = (_name), \ 311 .field_exists = (_test), \ 312 .flags = VMS_ARRAY | VMS_MUST_EXIST, \ 313 .num = 0, /* 0 elements: no data, only run _test */ \ 314 } 315 316 #define VMSTATE_POINTER(_field, _state, _version, _info, _type) { \ 317 .name = (stringify(_field)), \ 318 .version_id = (_version), \ 319 .info = &(_info), \ 320 .size = sizeof(_type), \ 321 .flags = VMS_SINGLE|VMS_POINTER, \ 322 .offset = vmstate_offset_value(_state, _field, _type), \ 323 } 324 325 #define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) { \ 326 .name = (stringify(_field)), \ 327 .info = &(_info), \ 328 .field_exists = (_test), \ 329 .size = sizeof(_type), \ 330 .flags = VMS_SINGLE|VMS_POINTER, \ 331 .offset = vmstate_offset_value(_state, _field, _type), \ 332 } 333 334 #define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\ 335 .name = (stringify(_field)), \ 336 .version_id = (_version), \ 337 .num = (_num), \ 338 .info = &(_info), \ 339 .size = sizeof(_type), \ 340 .flags = VMS_ARRAY, \ 341 .offset = vmstate_offset_array(_state, _field, _type, _num), \ 342 } 343 344 #define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \ 345 .name = (stringify(_field)), \ 346 .version_id = (_version), \ 347 .num = (_n1) * (_n2), \ 348 .info = &(_info), \ 349 .size = sizeof(_type), \ 350 .flags = VMS_ARRAY, \ 351 .offset = vmstate_offset_2darray(_state, _field, _type, _n1, _n2), \ 352 } 353 354 #define VMSTATE_VARRAY_MULTIPLY(_field, _state, _field_num, _multiply, _info, _type) { \ 355 .name = (stringify(_field)), \ 356 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ 357 .num = (_multiply), \ 358 .info = &(_info), \ 359 .size = sizeof(_type), \ 360 .flags = VMS_VARRAY_UINT32|VMS_MULTIPLY_ELEMENTS, \ 361 .offset = offsetof(_state, _field), \ 362 } 363 364 #define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\ 365 .name = (stringify(_field)), \ 366 .field_exists = (_test), \ 367 .num = (_num), \ 368 .info = &(_info), \ 369 .size = sizeof(_type), \ 370 .flags = VMS_ARRAY, \ 371 .offset = vmstate_offset_array(_state, _field, _type, _num),\ 372 } 373 374 #define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \ 375 .name = (stringify(_field)), \ 376 .version_id = (_version), \ 377 .num = (_num), \ 378 .info = &(_info), \ 379 .size = sizeof(_type), \ 380 .flags = VMS_ARRAY, \ 381 .offset = vmstate_offset_sub_array(_state, _field, _type, _start), \ 382 } 383 384 #define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\ 385 .name = (stringify(_field)), \ 386 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \ 387 .info = &(_info), \ 388 .size = sizeof(_type), \ 389 .flags = VMS_VARRAY_INT32, \ 390 .offset = offsetof(_state, _field), \ 391 } 392 393 #define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\ 394 .name = (stringify(_field)), \ 395 .version_id = (_version), \ 396 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \ 397 .info = &(_info), \ 398 .size = sizeof(_type), \ 399 .flags = VMS_VARRAY_INT32|VMS_POINTER, \ 400 .offset = vmstate_offset_pointer(_state, _field, _type), \ 401 } 402 403 #define VMSTATE_VARRAY_UINT32(_field, _state, _field_num, _version, _info, _type) {\ 404 .name = (stringify(_field)), \ 405 .version_id = (_version), \ 406 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ 407 .info = &(_info), \ 408 .size = sizeof(_type), \ 409 .flags = VMS_VARRAY_UINT32|VMS_POINTER, \ 410 .offset = vmstate_offset_pointer(_state, _field, _type), \ 411 } 412 413 #define VMSTATE_VARRAY_UINT32_ALLOC(_field, _state, _field_num, _version, _info, _type) {\ 414 .name = (stringify(_field)), \ 415 .version_id = (_version), \ 416 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ 417 .info = &(_info), \ 418 .size = sizeof(_type), \ 419 .flags = VMS_VARRAY_UINT32|VMS_POINTER|VMS_ALLOC, \ 420 .offset = vmstate_offset_pointer(_state, _field, _type), \ 421 } 422 423 #define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\ 424 .name = (stringify(_field)), \ 425 .version_id = (_version), \ 426 .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\ 427 .info = &(_info), \ 428 .size = sizeof(_type), \ 429 .flags = VMS_VARRAY_UINT16, \ 430 .offset = offsetof(_state, _field), \ 431 } 432 433 #define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \ 434 .name = (stringify(_field)), \ 435 .version_id = (_version), \ 436 .field_exists = (_test), \ 437 .vmsd = &(_vmsd), \ 438 .size = sizeof(_type), \ 439 .flags = VMS_STRUCT, \ 440 .offset = vmstate_offset_value(_state, _field, _type), \ 441 } 442 443 #define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \ 444 .name = (stringify(_field)), \ 445 .version_id = (_version), \ 446 .vmsd = &(_vmsd), \ 447 .size = sizeof(_type *), \ 448 .flags = VMS_STRUCT|VMS_POINTER, \ 449 .offset = vmstate_offset_pointer(_state, _field, _type), \ 450 } 451 452 #define VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, _version, _vmsd, _type) { \ 453 .name = (stringify(_field)), \ 454 .version_id = (_version), \ 455 .field_exists = (_test), \ 456 .vmsd = &(_vmsd), \ 457 .size = sizeof(_type *), \ 458 .flags = VMS_STRUCT|VMS_POINTER, \ 459 .offset = vmstate_offset_pointer(_state, _field, _type), \ 460 } 461 462 #define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\ 463 .name = (stringify(_field)), \ 464 .version_id = (_version), \ 465 .num = (_num), \ 466 .info = &(_info), \ 467 .size = sizeof(_type), \ 468 .flags = VMS_ARRAY|VMS_ARRAY_OF_POINTER, \ 469 .offset = vmstate_offset_array(_state, _field, _type, _num), \ 470 } 471 472 #define VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, _v, _vmsd, _type) { \ 473 .name = (stringify(_f)), \ 474 .version_id = (_v), \ 475 .num = (_n), \ 476 .vmsd = &(_vmsd), \ 477 .size = sizeof(_type *), \ 478 .flags = VMS_ARRAY|VMS_STRUCT|VMS_ARRAY_OF_POINTER, \ 479 .offset = vmstate_offset_array(_s, _f, _type*, _n), \ 480 } 481 482 #define VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, _num, _version, _vmsd, _type) { \ 483 .name = (stringify(_field)), \ 484 .version_id = (_version), \ 485 .num = (_num), \ 486 .vmsd = &(_vmsd), \ 487 .size = sizeof(_type), \ 488 .flags = VMS_STRUCT|VMS_ARRAY, \ 489 .offset = vmstate_offset_sub_array(_state, _field, _type, _start), \ 490 } 491 492 #define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \ 493 .name = (stringify(_field)), \ 494 .num = (_num), \ 495 .field_exists = (_test), \ 496 .version_id = (_version), \ 497 .vmsd = &(_vmsd), \ 498 .size = sizeof(_type), \ 499 .flags = VMS_STRUCT|VMS_ARRAY, \ 500 .offset = vmstate_offset_array(_state, _field, _type, _num),\ 501 } 502 503 #define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \ 504 .name = (stringify(_field)), \ 505 .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \ 506 .version_id = (_version), \ 507 .vmsd = &(_vmsd), \ 508 .size = sizeof(_type), \ 509 .flags = VMS_STRUCT|VMS_VARRAY_UINT8, \ 510 .offset = offsetof(_state, _field), \ 511 } 512 513 /* a variable length array (i.e. _type *_field) but we know the 514 * length 515 */ 516 #define VMSTATE_STRUCT_VARRAY_POINTER_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \ 517 .name = (stringify(_field)), \ 518 .num = (_num), \ 519 .version_id = (_version), \ 520 .vmsd = &(_vmsd), \ 521 .size = sizeof(_type), \ 522 .flags = VMS_STRUCT|VMS_ARRAY|VMS_POINTER, \ 523 .offset = offsetof(_state, _field), \ 524 } 525 526 #define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \ 527 .name = (stringify(_field)), \ 528 .version_id = 0, \ 529 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \ 530 .size = sizeof(_type), \ 531 .vmsd = &(_vmsd), \ 532 .flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \ 533 .offset = vmstate_offset_pointer(_state, _field, _type), \ 534 } 535 536 #define VMSTATE_STRUCT_VARRAY_POINTER_UINT32(_field, _state, _field_num, _vmsd, _type) { \ 537 .name = (stringify(_field)), \ 538 .version_id = 0, \ 539 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ 540 .size = sizeof(_type), \ 541 .vmsd = &(_vmsd), \ 542 .flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \ 543 .offset = vmstate_offset_pointer(_state, _field, _type), \ 544 } 545 546 #define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \ 547 .name = (stringify(_field)), \ 548 .version_id = 0, \ 549 .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\ 550 .size = sizeof(_type), \ 551 .vmsd = &(_vmsd), \ 552 .flags = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT, \ 553 .offset = vmstate_offset_pointer(_state, _field, _type), \ 554 } 555 556 #define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \ 557 .name = (stringify(_field)), \ 558 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \ 559 .version_id = (_version), \ 560 .vmsd = &(_vmsd), \ 561 .size = sizeof(_type), \ 562 .flags = VMS_STRUCT|VMS_VARRAY_INT32, \ 563 .offset = offsetof(_state, _field), \ 564 } 565 566 #define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \ 567 .name = (stringify(_field)), \ 568 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \ 569 .version_id = (_version), \ 570 .vmsd = &(_vmsd), \ 571 .size = sizeof(_type), \ 572 .flags = VMS_STRUCT|VMS_VARRAY_UINT32, \ 573 .offset = offsetof(_state, _field), \ 574 } 575 576 #define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\ 577 .name = (stringify(_field)), \ 578 .version_id = (_version), \ 579 .vmsd = &(_vmsd), \ 580 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \ 581 .size = sizeof(_type), \ 582 .flags = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \ 583 .offset = vmstate_offset_pointer(_state, _field, _type), \ 584 } 585 586 #define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \ 587 .name = (stringify(_field)), \ 588 .version_id = (_version), \ 589 .field_exists = (_test), \ 590 .size = (_size - _start), \ 591 .info = &vmstate_info_buffer, \ 592 .flags = VMS_BUFFER, \ 593 .offset = vmstate_offset_buffer(_state, _field) + _start, \ 594 } 595 596 #define VMSTATE_VBUFFER_MULTIPLY(_field, _state, _version, _test, \ 597 _field_size, _multiply) { \ 598 .name = (stringify(_field)), \ 599 .version_id = (_version), \ 600 .field_exists = (_test), \ 601 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\ 602 .size = (_multiply), \ 603 .info = &vmstate_info_buffer, \ 604 .flags = VMS_VBUFFER|VMS_POINTER|VMS_MULTIPLY, \ 605 .offset = offsetof(_state, _field), \ 606 } 607 608 #define VMSTATE_VBUFFER(_field, _state, _version, _test, _field_size) { \ 609 .name = (stringify(_field)), \ 610 .version_id = (_version), \ 611 .field_exists = (_test), \ 612 .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\ 613 .info = &vmstate_info_buffer, \ 614 .flags = VMS_VBUFFER|VMS_POINTER, \ 615 .offset = offsetof(_state, _field), \ 616 } 617 618 #define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _field_size) { \ 619 .name = (stringify(_field)), \ 620 .version_id = (_version), \ 621 .field_exists = (_test), \ 622 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\ 623 .info = &vmstate_info_buffer, \ 624 .flags = VMS_VBUFFER|VMS_POINTER, \ 625 .offset = offsetof(_state, _field), \ 626 } 627 628 #define VMSTATE_VBUFFER_ALLOC_UINT32(_field, _state, _version, \ 629 _test, _field_size) { \ 630 .name = (stringify(_field)), \ 631 .version_id = (_version), \ 632 .field_exists = (_test), \ 633 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\ 634 .info = &vmstate_info_buffer, \ 635 .flags = VMS_VBUFFER|VMS_POINTER|VMS_ALLOC, \ 636 .offset = offsetof(_state, _field), \ 637 } 638 639 #define VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, _test, _version, _info, _size) { \ 640 .name = (stringify(_field)), \ 641 .version_id = (_version), \ 642 .field_exists = (_test), \ 643 .size = (_size), \ 644 .info = &(_info), \ 645 .flags = VMS_BUFFER, \ 646 .offset = offsetof(_state, _field), \ 647 } 648 649 #define VMSTATE_BUFFER_POINTER_UNSAFE(_field, _state, _version, _size) { \ 650 .name = (stringify(_field)), \ 651 .version_id = (_version), \ 652 .size = (_size), \ 653 .info = &vmstate_info_buffer, \ 654 .flags = VMS_BUFFER|VMS_POINTER, \ 655 .offset = offsetof(_state, _field), \ 656 } 657 658 /* Allocate a temporary of type 'tmp_type', set tmp->parent to _state 659 * and execute the vmsd on the temporary. Note that we're working with 660 * the whole of _state here, not a field within it. 661 * We compile time check that: 662 * That _tmp_type contains a 'parent' member that's a pointer to the 663 * '_state' type 664 * That the pointer is right at the start of _tmp_type. 665 */ 666 #define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \ 667 .name = "tmp", \ 668 .size = sizeof(_tmp_type) + \ 669 QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \ 670 type_check_pointer(_state, \ 671 typeof_field(_tmp_type, parent)), \ 672 .vmsd = &(_vmsd), \ 673 .info = &vmstate_info_tmp, \ 674 } 675 676 #define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \ 677 .name = "unused", \ 678 .field_exists = (_test), \ 679 .version_id = (_version), \ 680 .size = (_size), \ 681 .info = &vmstate_info_unused_buffer, \ 682 .flags = VMS_BUFFER, \ 683 } 684 685 /* Discard size * field_num bytes, where field_num is a uint32 member */ 686 #define VMSTATE_UNUSED_VARRAY_UINT32(_state, _test, _version, _field_num, _size) {\ 687 .name = "unused", \ 688 .field_exists = (_test), \ 689 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\ 690 .version_id = (_version), \ 691 .size = (_size), \ 692 .info = &vmstate_info_unused_buffer, \ 693 .flags = VMS_VARRAY_UINT32 | VMS_BUFFER, \ 694 } 695 696 /* _field_size should be a int32_t field in the _state struct giving the 697 * size of the bitmap _field in bits. 698 */ 699 #define VMSTATE_BITMAP(_field, _state, _version, _field_size) { \ 700 .name = (stringify(_field)), \ 701 .version_id = (_version), \ 702 .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\ 703 .info = &vmstate_info_bitmap, \ 704 .flags = VMS_VBUFFER|VMS_POINTER, \ 705 .offset = offsetof(_state, _field), \ 706 } 707 708 /* For migrating a QTAILQ. 709 * Target QTAILQ needs be properly initialized. 710 * _type: type of QTAILQ element 711 * _next: name of QTAILQ entry field in QTAILQ element 712 * _vmsd: VMSD for QTAILQ element 713 * size: size of QTAILQ element 714 * start: offset of QTAILQ entry in QTAILQ element 715 */ 716 #define VMSTATE_QTAILQ_V(_field, _state, _version, _vmsd, _type, _next) \ 717 { \ 718 .name = (stringify(_field)), \ 719 .version_id = (_version), \ 720 .vmsd = &(_vmsd), \ 721 .size = sizeof(_type), \ 722 .info = &vmstate_info_qtailq, \ 723 .offset = offsetof(_state, _field), \ 724 .start = offsetof(_type, _next), \ 725 } 726 727 /* _f : field name 728 _f_n : num of elements field_name 729 _n : num of elements 730 _s : struct state name 731 _v : version 732 */ 733 734 #define VMSTATE_SINGLE(_field, _state, _version, _info, _type) \ 735 VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type) 736 737 #define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) \ 738 VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type) 739 740 #define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type) \ 741 VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type) 742 743 #define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type) \ 744 VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, 0, _vmsd, _type) 745 746 #define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \ 747 VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version, \ 748 _vmsd, _type) 749 750 #define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) \ 751 VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, NULL, _version, _info, \ 752 _size) 753 754 #define VMSTATE_BOOL_V(_f, _s, _v) \ 755 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool) 756 757 #define VMSTATE_INT8_V(_f, _s, _v) \ 758 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t) 759 #define VMSTATE_INT16_V(_f, _s, _v) \ 760 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t) 761 #define VMSTATE_INT32_V(_f, _s, _v) \ 762 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t) 763 #define VMSTATE_INT64_V(_f, _s, _v) \ 764 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t) 765 766 #define VMSTATE_UINT8_V(_f, _s, _v) \ 767 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t) 768 #define VMSTATE_UINT16_V(_f, _s, _v) \ 769 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t) 770 #define VMSTATE_UINT32_V(_f, _s, _v) \ 771 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t) 772 #define VMSTATE_UINT64_V(_f, _s, _v) \ 773 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t) 774 775 #define VMSTATE_BOOL(_f, _s) \ 776 VMSTATE_BOOL_V(_f, _s, 0) 777 778 #define VMSTATE_INT8(_f, _s) \ 779 VMSTATE_INT8_V(_f, _s, 0) 780 #define VMSTATE_INT16(_f, _s) \ 781 VMSTATE_INT16_V(_f, _s, 0) 782 #define VMSTATE_INT32(_f, _s) \ 783 VMSTATE_INT32_V(_f, _s, 0) 784 #define VMSTATE_INT64(_f, _s) \ 785 VMSTATE_INT64_V(_f, _s, 0) 786 787 #define VMSTATE_UINT8(_f, _s) \ 788 VMSTATE_UINT8_V(_f, _s, 0) 789 #define VMSTATE_UINT16(_f, _s) \ 790 VMSTATE_UINT16_V(_f, _s, 0) 791 #define VMSTATE_UINT32(_f, _s) \ 792 VMSTATE_UINT32_V(_f, _s, 0) 793 #define VMSTATE_UINT64(_f, _s) \ 794 VMSTATE_UINT64_V(_f, _s, 0) 795 796 #define VMSTATE_UINT8_EQUAL(_f, _s) \ 797 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint8_equal, uint8_t) 798 799 #define VMSTATE_UINT16_EQUAL(_f, _s) \ 800 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint16_equal, uint16_t) 801 802 #define VMSTATE_UINT16_EQUAL_V(_f, _s, _v) \ 803 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16_equal, uint16_t) 804 805 #define VMSTATE_INT32_EQUAL(_f, _s) \ 806 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t) 807 808 #define VMSTATE_UINT32_EQUAL_V(_f, _s, _v) \ 809 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32_equal, uint32_t) 810 811 #define VMSTATE_UINT32_EQUAL(_f, _s) \ 812 VMSTATE_UINT32_EQUAL_V(_f, _s, 0) 813 814 #define VMSTATE_UINT64_EQUAL_V(_f, _s, _v) \ 815 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64_equal, uint64_t) 816 817 #define VMSTATE_UINT64_EQUAL(_f, _s) \ 818 VMSTATE_UINT64_EQUAL_V(_f, _s, 0) 819 820 #define VMSTATE_INT32_POSITIVE_LE(_f, _s) \ 821 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t) 822 823 #define VMSTATE_INT8_TEST(_f, _s, _t) \ 824 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int8, int8_t) 825 826 #define VMSTATE_INT16_TEST(_f, _s, _t) \ 827 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int16, int16_t) 828 829 #define VMSTATE_INT32_TEST(_f, _s, _t) \ 830 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int32, int32_t) 831 832 #define VMSTATE_INT64_TEST(_f, _s, _t) \ 833 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int64, int64_t) 834 835 #define VMSTATE_UINT8_TEST(_f, _s, _t) \ 836 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t) 837 838 #define VMSTATE_UINT16_TEST(_f, _s, _t) \ 839 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t) 840 841 #define VMSTATE_UINT32_TEST(_f, _s, _t) \ 842 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t) 843 844 #define VMSTATE_UINT64_TEST(_f, _s, _t) \ 845 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint64, uint64_t) 846 847 848 #define VMSTATE_FLOAT64_V(_f, _s, _v) \ 849 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_float64, float64) 850 851 #define VMSTATE_FLOAT64(_f, _s) \ 852 VMSTATE_FLOAT64_V(_f, _s, 0) 853 854 #define VMSTATE_TIMER_PTR_TEST(_f, _s, _test) \ 855 VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *) 856 857 #define VMSTATE_TIMER_PTR_V(_f, _s, _v) \ 858 VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *) 859 860 #define VMSTATE_TIMER_PTR(_f, _s) \ 861 VMSTATE_TIMER_PTR_V(_f, _s, 0) 862 863 #define VMSTATE_TIMER_PTR_ARRAY(_f, _s, _n) \ 864 VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *) 865 866 #define VMSTATE_TIMER_TEST(_f, _s, _test) \ 867 VMSTATE_SINGLE_TEST(_f, _s, _test, 0, vmstate_info_timer, QEMUTimer) 868 869 #define VMSTATE_TIMER_V(_f, _s, _v) \ 870 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_timer, QEMUTimer) 871 872 #define VMSTATE_TIMER(_f, _s) \ 873 VMSTATE_TIMER_V(_f, _s, 0) 874 875 #define VMSTATE_TIMER_ARRAY(_f, _s, _n) \ 876 VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer) 877 878 #define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v) \ 879 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool) 880 881 #define VMSTATE_BOOL_ARRAY(_f, _s, _n) \ 882 VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0) 883 884 #define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v) \ 885 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t) 886 887 #define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v) \ 888 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t) 889 890 #define VMSTATE_UINT16_ARRAY(_f, _s, _n) \ 891 VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0) 892 893 #define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2) \ 894 VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0) 895 896 #define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v) \ 897 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t) 898 899 #define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v) \ 900 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t) 901 902 #define VMSTATE_UINT8_ARRAY(_f, _s, _n) \ 903 VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0) 904 905 #define VMSTATE_UINT8_SUB_ARRAY(_f, _s, _start, _num) \ 906 VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint8, uint8_t) 907 908 #define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2) \ 909 VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0) 910 911 #define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v) \ 912 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t) 913 914 #define VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, _v) \ 915 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint32, uint32_t) 916 917 #define VMSTATE_UINT32_ARRAY(_f, _s, _n) \ 918 VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0) 919 920 #define VMSTATE_UINT32_2DARRAY(_f, _s, _n1, _n2) \ 921 VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, 0) 922 923 #define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v) \ 924 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t) 925 926 #define VMSTATE_UINT64_ARRAY(_f, _s, _n) \ 927 VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0) 928 929 #define VMSTATE_UINT64_2DARRAY(_f, _s, _n1, _n2) \ 930 VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, 0) 931 932 #define VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, _v) \ 933 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint64, uint64_t) 934 935 #define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v) \ 936 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t) 937 938 #define VMSTATE_INT16_ARRAY(_f, _s, _n) \ 939 VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0) 940 941 #define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v) \ 942 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t) 943 944 #define VMSTATE_INT32_ARRAY(_f, _s, _n) \ 945 VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0) 946 947 #define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num) \ 948 VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t) 949 950 #define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v) \ 951 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t) 952 953 #define VMSTATE_INT64_ARRAY(_f, _s, _n) \ 954 VMSTATE_INT64_ARRAY_V(_f, _s, _n, 0) 955 956 #define VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, _v) \ 957 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_float64, float64) 958 959 #define VMSTATE_FLOAT64_ARRAY(_f, _s, _n) \ 960 VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, 0) 961 962 #define VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, _v) \ 963 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_cpudouble, CPU_DoubleU) 964 965 #define VMSTATE_CPUDOUBLE_ARRAY(_f, _s, _n) \ 966 VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, 0) 967 968 #define VMSTATE_BUFFER_V(_f, _s, _v) \ 969 VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f))) 970 971 #define VMSTATE_BUFFER(_f, _s) \ 972 VMSTATE_BUFFER_V(_f, _s, 0) 973 974 #define VMSTATE_PARTIAL_BUFFER(_f, _s, _size) \ 975 VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size) 976 977 #define VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, _v) \ 978 VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, _start, sizeof(typeof_field(_s, _f))) 979 980 #define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \ 981 VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, 0) 982 983 #define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size) \ 984 VMSTATE_VBUFFER(_f, _s, 0, NULL, _size) 985 986 #define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size) \ 987 VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, _size) 988 989 #define VMSTATE_BUFFER_TEST(_f, _s, _test) \ 990 VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f))) 991 992 #define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size) \ 993 VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size) 994 995 #define VMSTATE_UNUSED_V(_v, _size) \ 996 VMSTATE_UNUSED_BUFFER(NULL, _v, _size) 997 998 #define VMSTATE_UNUSED(_size) \ 999 VMSTATE_UNUSED_V(0, _size) 1000 1001 #define VMSTATE_UNUSED_TEST(_test, _size) \ 1002 VMSTATE_UNUSED_BUFFER(_test, 0, _size) 1003 1004 #define VMSTATE_END_OF_LIST() \ 1005 {} 1006 1007 #define SELF_ANNOUNCE_ROUNDS 5 1008 1009 void loadvm_free_handlers(MigrationIncomingState *mis); 1010 1011 int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, 1012 void *opaque, int version_id); 1013 void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, 1014 void *opaque, QJSON *vmdesc); 1015 1016 bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque); 1017 1018 /* Returns: 0 on success, -1 on failure */ 1019 int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, 1020 const VMStateDescription *vmsd, 1021 void *base, int alias_id, 1022 int required_for_version, 1023 Error **errp); 1024 1025 /* Returns: 0 on success, -1 on failure */ 1026 static inline int vmstate_register(DeviceState *dev, int instance_id, 1027 const VMStateDescription *vmsd, 1028 void *opaque) 1029 { 1030 return vmstate_register_with_alias_id(dev, instance_id, vmsd, 1031 opaque, -1, 0, NULL); 1032 } 1033 1034 void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, 1035 void *opaque); 1036 1037 struct MemoryRegion; 1038 void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev); 1039 void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev); 1040 void vmstate_register_ram_global(struct MemoryRegion *memory); 1041 1042 static inline 1043 int64_t self_announce_delay(int round) 1044 { 1045 assert(round < SELF_ANNOUNCE_ROUNDS && round > 0); 1046 /* delay 50ms, 150ms, 250ms, ... */ 1047 return 50 + (SELF_ANNOUNCE_ROUNDS - round - 1) * 100; 1048 } 1049 1050 void dump_vmstate_json_to_file(FILE *out_fp); 1051 1052 #endif 1053