1 /* 2 * CPU models for s390x 3 * 4 * Copyright 2016 IBM Corp. 5 * 6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "cpu.h" 15 #include "internal.h" 16 #include "kvm_s390x.h" 17 #include "sysemu/kvm.h" 18 #include "sysemu/tcg.h" 19 #include "qapi/error.h" 20 #include "qapi/visitor.h" 21 #include "qemu/error-report.h" 22 #include "qemu/module.h" 23 #include "qemu/qemu-print.h" 24 #include "qapi/qmp/qerror.h" 25 #include "qapi/qobject-input-visitor.h" 26 #include "qapi/qmp/qdict.h" 27 #ifndef CONFIG_USER_ONLY 28 #include "sysemu/arch_init.h" 29 #include "hw/pci/pci.h" 30 #endif 31 #include "qapi/qapi-commands-machine-target.h" 32 33 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 34 { \ 35 .name = _name, \ 36 .type = _type, \ 37 .gen = _gen, \ 38 .ec_ga = _ec_ga, \ 39 .mha_pow = _mha_pow, \ 40 .hmfai = _hmfai, \ 41 .desc = _desc, \ 42 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 43 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 44 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 45 } 46 47 /* 48 * CPU definition list in order of release. Up to generation 14 base features 49 * of a following release have been a superset of the previous release. With 50 * generation 15 one base feature and one optional feature have been deprecated. 51 */ 52 static S390CPUDef s390_cpu_defs[] = { 53 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 54 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 55 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 56 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 57 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 58 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 59 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 60 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 61 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 62 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 63 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 64 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 65 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 66 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 67 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 68 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 69 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 70 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 71 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 72 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 73 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 74 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 75 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 76 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 77 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 78 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 79 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 80 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 81 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 82 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 83 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 84 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 85 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 86 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 87 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 GA1"), 88 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), 89 }; 90 91 #define QEMU_MAX_CPU_TYPE 0x2964 92 #define QEMU_MAX_CPU_GEN 13 93 #define QEMU_MAX_CPU_EC_GA 2 94 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 95 static S390FeatBitmap qemu_max_cpu_feat; 96 97 /* features part of a base model but not relevant for finding a base model */ 98 S390FeatBitmap ignored_base_feat; 99 100 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 101 { 102 const S390CPUDef *def; 103 104 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 105 clear_bit(feat, (unsigned long *)&def->default_feat); 106 } 107 108 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 109 { 110 int i; 111 112 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 113 const S390CPUDef *def = &s390_cpu_defs[i]; 114 115 if (def->gen < gen) { 116 continue; 117 } 118 if (def->gen == gen && def->ec_ga < ec_ga) { 119 continue; 120 } 121 122 clear_bit(feat, (unsigned long *)&def->default_feat); 123 } 124 } 125 126 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 127 S390FeatGroup group) 128 { 129 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 130 S390FeatBitmap group_def_off; 131 int i; 132 133 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 134 135 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 136 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 137 138 if (cpu_def->gen < gen) { 139 continue; 140 } 141 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 142 continue; 143 } 144 145 bitmap_and((unsigned long *)&cpu_def->default_feat, 146 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 147 } 148 } 149 150 uint32_t s390_get_hmfai(void) 151 { 152 static S390CPU *cpu; 153 154 if (!cpu) { 155 cpu = S390_CPU(qemu_get_cpu(0)); 156 } 157 158 if (!cpu || !cpu->model) { 159 return 0; 160 } 161 return cpu->model->def->hmfai; 162 } 163 164 uint8_t s390_get_mha_pow(void) 165 { 166 static S390CPU *cpu; 167 168 if (!cpu) { 169 cpu = S390_CPU(qemu_get_cpu(0)); 170 } 171 172 if (!cpu || !cpu->model) { 173 return 0; 174 } 175 return cpu->model->def->mha_pow; 176 } 177 178 uint32_t s390_get_ibc_val(void) 179 { 180 uint16_t unblocked_ibc, lowest_ibc; 181 static S390CPU *cpu; 182 183 if (!cpu) { 184 cpu = S390_CPU(qemu_get_cpu(0)); 185 } 186 187 if (!cpu || !cpu->model) { 188 return 0; 189 } 190 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 191 lowest_ibc = cpu->model->lowest_ibc; 192 /* the lowest_ibc always has to be <= unblocked_ibc */ 193 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 194 return 0; 195 } 196 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 197 } 198 199 void s390_get_feat_block(S390FeatType type, uint8_t *data) 200 { 201 static S390CPU *cpu; 202 203 if (!cpu) { 204 cpu = S390_CPU(qemu_get_cpu(0)); 205 } 206 207 if (!cpu || !cpu->model) { 208 return; 209 } 210 s390_fill_feat_block(cpu->model->features, type, data); 211 } 212 213 bool s390_has_feat(S390Feat feat) 214 { 215 static S390CPU *cpu; 216 217 if (!cpu) { 218 cpu = S390_CPU(qemu_get_cpu(0)); 219 } 220 221 if (!cpu || !cpu->model) { 222 #ifdef CONFIG_KVM 223 if (kvm_enabled()) { 224 if (feat == S390_FEAT_VECTOR) { 225 return kvm_check_extension(kvm_state, 226 KVM_CAP_S390_VECTOR_REGISTERS); 227 } 228 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 229 return kvm_s390_get_ri(); 230 } 231 if (feat == S390_FEAT_MSA_EXT_3) { 232 return true; 233 } 234 } 235 #endif 236 if (feat == S390_FEAT_ZPCI) { 237 return true; 238 } 239 return 0; 240 } 241 return test_bit(feat, cpu->model->features); 242 } 243 244 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 245 { 246 int i; 247 248 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 249 if (s390_cpu_defs[i].type == type) { 250 return s390_cpu_defs[i].gen; 251 } 252 } 253 return 0; 254 } 255 256 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 257 S390FeatBitmap features) 258 { 259 const S390CPUDef *last_compatible = NULL; 260 const S390CPUDef *matching_cpu_type = NULL; 261 int i; 262 263 if (!gen) { 264 ec_ga = 0; 265 } 266 if (!gen && type) { 267 gen = s390_get_gen_for_cpu_type(type); 268 } 269 270 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 271 const S390CPUDef *def = &s390_cpu_defs[i]; 272 S390FeatBitmap missing; 273 274 /* don't even try newer generations if we know the generation */ 275 if (gen) { 276 if (def->gen > gen) { 277 break; 278 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 279 break; 280 } 281 } 282 283 if (features) { 284 /* see if the model satisfies the minimum features */ 285 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 286 /* 287 * Ignore certain features that are in the base model, but not 288 * relevant for the search (esp. MSA subfunctions). 289 */ 290 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 291 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 292 break; 293 } 294 } 295 296 /* stop the search if we found the exact model */ 297 if (def->type == type && def->ec_ga == ec_ga) { 298 return def; 299 } 300 /* remember if we've at least seen one with the same cpu type */ 301 if (def->type == type) { 302 matching_cpu_type = def; 303 } 304 last_compatible = def; 305 } 306 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 307 if (matching_cpu_type) { 308 return matching_cpu_type; 309 } 310 return last_compatible; 311 } 312 313 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 314 { 315 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 316 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 317 const char *details = ""; 318 319 if (scc->is_static) { 320 details = "(static, migration-safe)"; 321 } else if (scc->is_migration_safe) { 322 details = "(migration-safe)"; 323 } 324 325 /* strip off the -s390x-cpu */ 326 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 327 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 328 g_free(name); 329 } 330 331 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 332 { 333 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 334 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 335 const char *name_a = object_class_get_name((ObjectClass *)a); 336 const char *name_b = object_class_get_name((ObjectClass *)b); 337 338 /* 339 * Move qemu, host and max to the top of the list, qemu first, host second, 340 * max third. 341 */ 342 if (name_a[0] == 'q') { 343 return -1; 344 } else if (name_b[0] == 'q') { 345 return 1; 346 } else if (name_a[0] == 'h') { 347 return -1; 348 } else if (name_b[0] == 'h') { 349 return 1; 350 } else if (name_a[0] == 'm') { 351 return -1; 352 } else if (name_b[0] == 'm') { 353 return 1; 354 } 355 356 /* keep the same order we have in our table (sorted by release date) */ 357 if (cc_a->cpu_def != cc_b->cpu_def) { 358 return cc_a->cpu_def - cc_b->cpu_def; 359 } 360 361 /* exact same definition - list base model first */ 362 return cc_a->is_static ? -1 : 1; 363 } 364 365 void s390_cpu_list(void) 366 { 367 S390FeatGroup group; 368 S390Feat feat; 369 GSList *list; 370 371 list = object_class_get_list(TYPE_S390_CPU, false); 372 list = g_slist_sort(list, s390_cpu_list_compare); 373 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 374 g_slist_free(list); 375 376 qemu_printf("\nRecognized feature flags:\n"); 377 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 378 const S390FeatDef *def = s390_feat_def(feat); 379 380 qemu_printf("%-20s %-50s\n", def->name, def->desc); 381 } 382 383 qemu_printf("\nRecognized feature groups:\n"); 384 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 385 const S390FeatGroupDef *def = s390_feat_group_def(group); 386 387 qemu_printf("%-20s %-50s\n", def->name, def->desc); 388 } 389 } 390 391 static S390CPUModel *get_max_cpu_model(Error **errp); 392 393 #ifndef CONFIG_USER_ONLY 394 static void list_add_feat(const char *name, void *opaque); 395 396 static void check_unavailable_features(const S390CPUModel *max_model, 397 const S390CPUModel *model, 398 strList **unavailable) 399 { 400 S390FeatBitmap missing; 401 402 /* check general model compatibility */ 403 if (max_model->def->gen < model->def->gen || 404 (max_model->def->gen == model->def->gen && 405 max_model->def->ec_ga < model->def->ec_ga)) { 406 list_add_feat("type", unavailable); 407 } 408 409 /* detect missing features if any to properly report them */ 410 bitmap_andnot(missing, model->features, max_model->features, 411 S390_FEAT_MAX); 412 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 413 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 414 } 415 } 416 417 struct CpuDefinitionInfoListData { 418 CpuDefinitionInfoList *list; 419 S390CPUModel *model; 420 }; 421 422 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 423 { 424 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 425 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 426 CpuDefinitionInfoList *entry; 427 CpuDefinitionInfo *info; 428 char *name = g_strdup(object_class_get_name(klass)); 429 S390CPUClass *scc = S390_CPU_CLASS(klass); 430 431 /* strip off the -s390x-cpu */ 432 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 433 info = g_new0(CpuDefinitionInfo, 1); 434 info->name = name; 435 info->has_migration_safe = true; 436 info->migration_safe = scc->is_migration_safe; 437 info->q_static = scc->is_static; 438 info->q_typename = g_strdup(object_class_get_name(klass)); 439 /* check for unavailable features */ 440 if (cpu_list_data->model) { 441 Object *obj; 442 S390CPU *sc; 443 obj = object_new_with_class(klass); 444 sc = S390_CPU(obj); 445 if (sc->model) { 446 info->has_unavailable_features = true; 447 check_unavailable_features(cpu_list_data->model, sc->model, 448 &info->unavailable_features); 449 } 450 object_unref(obj); 451 } 452 453 entry = g_new0(CpuDefinitionInfoList, 1); 454 entry->value = info; 455 entry->next = *cpu_list; 456 *cpu_list = entry; 457 } 458 459 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 460 { 461 struct CpuDefinitionInfoListData list_data = { 462 .list = NULL, 463 }; 464 465 list_data.model = get_max_cpu_model(NULL); 466 467 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 468 &list_data); 469 470 return list_data.list; 471 } 472 473 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 474 Error **errp) 475 { 476 Error *err = NULL; 477 const QDict *qdict = NULL; 478 const QDictEntry *e; 479 Visitor *visitor; 480 ObjectClass *oc; 481 S390CPU *cpu; 482 Object *obj; 483 484 if (info->props) { 485 qdict = qobject_to(QDict, info->props); 486 if (!qdict) { 487 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 488 return; 489 } 490 } 491 492 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 493 if (!oc) { 494 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 495 return; 496 } 497 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 498 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 499 return; 500 } 501 obj = object_new_with_class(oc); 502 cpu = S390_CPU(obj); 503 504 if (!cpu->model) { 505 error_setg(errp, "Details about the host CPU model are not available, " 506 "it cannot be used."); 507 object_unref(obj); 508 return; 509 } 510 511 if (qdict) { 512 visitor = qobject_input_visitor_new(info->props); 513 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 514 visit_free(visitor); 515 object_unref(obj); 516 return; 517 } 518 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 519 if (!object_property_set(obj, e->key, visitor, &err)) { 520 break; 521 } 522 } 523 if (!err) { 524 visit_check_struct(visitor, &err); 525 } 526 visit_end_struct(visitor, NULL); 527 visit_free(visitor); 528 if (err) { 529 error_propagate(errp, err); 530 object_unref(obj); 531 return; 532 } 533 } 534 535 /* copy the model and throw the cpu away */ 536 memcpy(model, cpu->model, sizeof(*model)); 537 object_unref(obj); 538 } 539 540 static void qdict_add_disabled_feat(const char *name, void *opaque) 541 { 542 qdict_put_bool(opaque, name, false); 543 } 544 545 static void qdict_add_enabled_feat(const char *name, void *opaque) 546 { 547 qdict_put_bool(opaque, name, true); 548 } 549 550 /* convert S390CPUDef into a static CpuModelInfo */ 551 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 552 bool delta_changes) 553 { 554 QDict *qdict = qdict_new(); 555 S390FeatBitmap bitmap; 556 557 /* always fallback to the static base model */ 558 info->name = g_strdup_printf("%s-base", model->def->name); 559 560 if (delta_changes) { 561 /* features deleted from the base feature set */ 562 bitmap_andnot(bitmap, model->def->base_feat, model->features, 563 S390_FEAT_MAX); 564 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 565 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 566 } 567 568 /* features added to the base feature set */ 569 bitmap_andnot(bitmap, model->features, model->def->base_feat, 570 S390_FEAT_MAX); 571 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 572 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 573 } 574 } else { 575 /* expand all features */ 576 s390_feat_bitmap_to_ascii(model->features, qdict, 577 qdict_add_enabled_feat); 578 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 579 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 580 } 581 582 if (!qdict_size(qdict)) { 583 qobject_unref(qdict); 584 } else { 585 info->props = QOBJECT(qdict); 586 info->has_props = true; 587 } 588 } 589 590 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 591 CpuModelInfo *model, 592 Error **errp) 593 { 594 Error *err = NULL; 595 CpuModelExpansionInfo *expansion_info = NULL; 596 S390CPUModel s390_model; 597 bool delta_changes = false; 598 599 /* convert it to our internal representation */ 600 cpu_model_from_info(&s390_model, model, &err); 601 if (err) { 602 error_propagate(errp, err); 603 return NULL; 604 } 605 606 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 607 delta_changes = true; 608 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 609 error_setg(errp, "The requested expansion type is not supported."); 610 return NULL; 611 } 612 613 /* convert it back to a static representation */ 614 expansion_info = g_new0(CpuModelExpansionInfo, 1); 615 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 616 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 617 return expansion_info; 618 } 619 620 static void list_add_feat(const char *name, void *opaque) 621 { 622 strList **last = (strList **) opaque; 623 strList *entry; 624 625 entry = g_new0(strList, 1); 626 entry->value = g_strdup(name); 627 entry->next = *last; 628 *last = entry; 629 } 630 631 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 632 CpuModelInfo *infob, 633 Error **errp) 634 { 635 Error *err = NULL; 636 CpuModelCompareResult feat_result, gen_result; 637 CpuModelCompareInfo *compare_info; 638 S390FeatBitmap missing, added; 639 S390CPUModel modela, modelb; 640 641 /* convert both models to our internal representation */ 642 cpu_model_from_info(&modela, infoa, &err); 643 if (err) { 644 error_propagate(errp, err); 645 return NULL; 646 } 647 cpu_model_from_info(&modelb, infob, &err); 648 if (err) { 649 error_propagate(errp, err); 650 return NULL; 651 } 652 compare_info = g_new0(CpuModelCompareInfo, 1); 653 654 /* check the cpu generation and ga level */ 655 if (modela.def->gen == modelb.def->gen) { 656 if (modela.def->ec_ga == modelb.def->ec_ga) { 657 /* ec and corresponding bc are identical */ 658 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 659 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 660 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 661 } else { 662 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 663 } 664 } else if (modela.def->gen < modelb.def->gen) { 665 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 666 } else { 667 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 668 } 669 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 670 /* both models cannot be made identical */ 671 list_add_feat("type", &compare_info->responsible_properties); 672 } 673 674 /* check the feature set */ 675 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 676 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 677 } else { 678 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 679 s390_feat_bitmap_to_ascii(missing, 680 &compare_info->responsible_properties, 681 list_add_feat); 682 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 683 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 684 list_add_feat); 685 if (bitmap_empty(missing, S390_FEAT_MAX)) { 686 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 687 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 688 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 689 } else { 690 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 691 } 692 } 693 694 /* combine the results */ 695 if (gen_result == feat_result) { 696 compare_info->result = gen_result; 697 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 698 compare_info->result = gen_result; 699 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 700 compare_info->result = feat_result; 701 } else { 702 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 703 } 704 return compare_info; 705 } 706 707 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 708 CpuModelInfo *infob, 709 Error **errp) 710 { 711 Error *err = NULL; 712 CpuModelBaselineInfo *baseline_info; 713 S390CPUModel modela, modelb, model; 714 uint16_t cpu_type; 715 uint8_t max_gen_ga; 716 uint8_t max_gen; 717 718 /* convert both models to our internal representation */ 719 cpu_model_from_info(&modela, infoa, &err); 720 if (err) { 721 error_propagate(errp, err); 722 return NULL; 723 } 724 725 cpu_model_from_info(&modelb, infob, &err); 726 if (err) { 727 error_propagate(errp, err); 728 return NULL; 729 } 730 731 /* features both models support */ 732 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 733 734 /* detect the maximum model not regarding features */ 735 if (modela.def->gen == modelb.def->gen) { 736 if (modela.def->type == modelb.def->type) { 737 cpu_type = modela.def->type; 738 } else { 739 cpu_type = 0; 740 } 741 max_gen = modela.def->gen; 742 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 743 } else if (modela.def->gen > modelb.def->gen) { 744 cpu_type = modelb.def->type; 745 max_gen = modelb.def->gen; 746 max_gen_ga = modelb.def->ec_ga; 747 } else { 748 cpu_type = modela.def->type; 749 max_gen = modela.def->gen; 750 max_gen_ga = modela.def->ec_ga; 751 } 752 753 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 754 model.features); 755 756 /* models without early base features (esan3) are bad */ 757 if (!model.def) { 758 error_setg(errp, "No compatible CPU model could be created as" 759 " important base features are disabled"); 760 return NULL; 761 } 762 763 /* strip off features not part of the max model */ 764 bitmap_and(model.features, model.features, model.def->full_feat, 765 S390_FEAT_MAX); 766 767 baseline_info = g_new0(CpuModelBaselineInfo, 1); 768 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 769 cpu_info_from_model(baseline_info->model, &model, true); 770 return baseline_info; 771 } 772 #endif 773 774 static void check_consistency(const S390CPUModel *model) 775 { 776 static int dep[][2] = { 777 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 778 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 779 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 780 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 781 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 782 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 783 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 784 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 785 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 786 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 787 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 788 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 789 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 790 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 791 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 792 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 793 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 794 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 795 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 796 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 797 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 798 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 799 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 800 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 801 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 802 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 803 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 804 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 805 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 806 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 807 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 808 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 809 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 810 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 811 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 812 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 813 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 814 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 815 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 816 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 817 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 818 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 819 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 820 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 821 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 822 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 823 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 824 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 825 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 826 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 827 }; 828 int i; 829 830 for (i = 0; i < ARRAY_SIZE(dep); i++) { 831 if (test_bit(dep[i][0], model->features) && 832 !test_bit(dep[i][1], model->features)) { 833 warn_report("\'%s\' requires \'%s\'.", 834 s390_feat_def(dep[i][0])->name, 835 s390_feat_def(dep[i][1])->name); 836 } 837 } 838 } 839 840 static void error_prepend_missing_feat(const char *name, void *opaque) 841 { 842 error_prepend((Error **) opaque, "%s ", name); 843 } 844 845 static void check_compatibility(const S390CPUModel *max_model, 846 const S390CPUModel *model, Error **errp) 847 { 848 S390FeatBitmap missing; 849 850 if (model->def->gen > max_model->def->gen) { 851 error_setg(errp, "Selected CPU generation is too new. Maximum " 852 "supported model in the configuration: \'%s\'", 853 max_model->def->name); 854 return; 855 } else if (model->def->gen == max_model->def->gen && 856 model->def->ec_ga > max_model->def->ec_ga) { 857 error_setg(errp, "Selected CPU GA level is too new. Maximum " 858 "supported model in the configuration: \'%s\'", 859 max_model->def->name); 860 return; 861 } 862 863 /* detect the missing features to properly report them */ 864 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 865 if (bitmap_empty(missing, S390_FEAT_MAX)) { 866 return; 867 } 868 869 error_setg(errp, " "); 870 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 871 error_prepend(errp, "Some features requested in the CPU model are not " 872 "available in the configuration: "); 873 } 874 875 static S390CPUModel *get_max_cpu_model(Error **errp) 876 { 877 Error *err = NULL; 878 static S390CPUModel max_model; 879 static bool cached; 880 881 if (cached) { 882 return &max_model; 883 } 884 885 if (kvm_enabled()) { 886 kvm_s390_get_host_cpu_model(&max_model, &err); 887 } else { 888 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 889 QEMU_MAX_CPU_EC_GA, NULL); 890 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 891 } 892 if (err) { 893 error_propagate(errp, err); 894 return NULL; 895 } 896 cached = true; 897 return &max_model; 898 } 899 900 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 901 { 902 #ifndef CONFIG_USER_ONLY 903 Error *err = NULL; 904 static S390CPUModel applied_model; 905 static bool applied; 906 907 /* 908 * We have the same model for all VCPUs. KVM can only be configured before 909 * any VCPUs are defined in KVM. 910 */ 911 if (applied) { 912 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 913 error_setg(errp, "Mixed CPU models are not supported on s390x."); 914 } 915 return; 916 } 917 918 if (kvm_enabled()) { 919 kvm_s390_apply_cpu_model(model, &err); 920 if (err) { 921 error_propagate(errp, err); 922 return; 923 } 924 } 925 926 applied = true; 927 if (model) { 928 applied_model = *model; 929 } 930 #endif 931 } 932 933 void s390_realize_cpu_model(CPUState *cs, Error **errp) 934 { 935 Error *err = NULL; 936 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 937 S390CPU *cpu = S390_CPU(cs); 938 const S390CPUModel *max_model; 939 940 if (xcc->kvm_required && !kvm_enabled()) { 941 error_setg(errp, "CPU definition requires KVM"); 942 return; 943 } 944 945 if (!cpu->model) { 946 /* no host model support -> perform compatibility stuff */ 947 apply_cpu_model(NULL, errp); 948 return; 949 } 950 951 max_model = get_max_cpu_model(errp); 952 if (!max_model) { 953 error_prepend(errp, "CPU models are not available: "); 954 return; 955 } 956 957 /* copy over properties that can vary */ 958 cpu->model->lowest_ibc = max_model->lowest_ibc; 959 cpu->model->cpu_id = max_model->cpu_id; 960 cpu->model->cpu_id_format = max_model->cpu_id_format; 961 cpu->model->cpu_ver = max_model->cpu_ver; 962 963 check_consistency(cpu->model); 964 check_compatibility(max_model, cpu->model, &err); 965 if (err) { 966 error_propagate(errp, err); 967 return; 968 } 969 970 apply_cpu_model(cpu->model, errp); 971 972 #if !defined(CONFIG_USER_ONLY) 973 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 974 if (tcg_enabled()) { 975 /* basic mode, write the cpu address into the first 4 bit of the ID */ 976 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 977 } 978 #endif 979 } 980 981 static void get_feature(Object *obj, Visitor *v, const char *name, 982 void *opaque, Error **errp) 983 { 984 S390Feat feat = (S390Feat) opaque; 985 S390CPU *cpu = S390_CPU(obj); 986 bool value; 987 988 if (!cpu->model) { 989 error_setg(errp, "Details about the host CPU model are not available, " 990 "features cannot be queried."); 991 return; 992 } 993 994 value = test_bit(feat, cpu->model->features); 995 visit_type_bool(v, name, &value, errp); 996 } 997 998 static void set_feature(Object *obj, Visitor *v, const char *name, 999 void *opaque, Error **errp) 1000 { 1001 S390Feat feat = (S390Feat) opaque; 1002 DeviceState *dev = DEVICE(obj); 1003 S390CPU *cpu = S390_CPU(obj); 1004 bool value; 1005 1006 if (dev->realized) { 1007 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1008 "it was realized", name, object_get_typename(obj)); 1009 return; 1010 } else if (!cpu->model) { 1011 error_setg(errp, "Details about the host CPU model are not available, " 1012 "features cannot be changed."); 1013 return; 1014 } 1015 1016 if (!visit_type_bool(v, name, &value, errp)) { 1017 return; 1018 } 1019 if (value) { 1020 if (!test_bit(feat, cpu->model->def->full_feat)) { 1021 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1022 " it was introduced with later models.", 1023 name, cpu->model->def->name); 1024 return; 1025 } 1026 set_bit(feat, cpu->model->features); 1027 } else { 1028 clear_bit(feat, cpu->model->features); 1029 } 1030 } 1031 1032 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1033 void *opaque, Error **errp) 1034 { 1035 S390FeatGroup group = (S390FeatGroup) opaque; 1036 const S390FeatGroupDef *def = s390_feat_group_def(group); 1037 S390CPU *cpu = S390_CPU(obj); 1038 S390FeatBitmap tmp; 1039 bool value; 1040 1041 if (!cpu->model) { 1042 error_setg(errp, "Details about the host CPU model are not available, " 1043 "features cannot be queried."); 1044 return; 1045 } 1046 1047 /* a group is enabled if all features are enabled */ 1048 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1049 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1050 visit_type_bool(v, name, &value, errp); 1051 } 1052 1053 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1054 void *opaque, Error **errp) 1055 { 1056 S390FeatGroup group = (S390FeatGroup) opaque; 1057 const S390FeatGroupDef *def = s390_feat_group_def(group); 1058 DeviceState *dev = DEVICE(obj); 1059 S390CPU *cpu = S390_CPU(obj); 1060 bool value; 1061 1062 if (dev->realized) { 1063 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1064 "it was realized", name, object_get_typename(obj)); 1065 return; 1066 } else if (!cpu->model) { 1067 error_setg(errp, "Details about the host CPU model are not available, " 1068 "features cannot be changed."); 1069 return; 1070 } 1071 1072 if (!visit_type_bool(v, name, &value, errp)) { 1073 return; 1074 } 1075 if (value) { 1076 /* groups are added in one shot, so an intersect is sufficient */ 1077 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1078 S390_FEAT_MAX)) { 1079 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1080 " it was introduced with later models.", 1081 name, cpu->model->def->name); 1082 return; 1083 } 1084 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1085 S390_FEAT_MAX); 1086 } else { 1087 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1088 S390_FEAT_MAX); 1089 } 1090 } 1091 1092 void s390_cpu_model_register_props(Object *obj) 1093 { 1094 S390FeatGroup group; 1095 S390Feat feat; 1096 1097 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1098 const S390FeatDef *def = s390_feat_def(feat); 1099 object_property_add(obj, def->name, "bool", get_feature, 1100 set_feature, NULL, (void *) feat); 1101 object_property_set_description(obj, def->name, def->desc); 1102 } 1103 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1104 const S390FeatGroupDef *def = s390_feat_group_def(group); 1105 object_property_add(obj, def->name, "bool", get_feature_group, 1106 set_feature_group, NULL, (void *) group); 1107 object_property_set_description(obj, def->name, def->desc); 1108 } 1109 } 1110 1111 static void s390_cpu_model_initfn(Object *obj) 1112 { 1113 S390CPU *cpu = S390_CPU(obj); 1114 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1115 1116 cpu->model = g_malloc0(sizeof(*cpu->model)); 1117 /* copy the model, so we can modify it */ 1118 cpu->model->def = xcc->cpu_def; 1119 if (xcc->is_static) { 1120 /* base model - features will never change */ 1121 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1122 S390_FEAT_MAX); 1123 } else { 1124 /* latest model - features can change */ 1125 bitmap_copy(cpu->model->features, 1126 cpu->model->def->default_feat, S390_FEAT_MAX); 1127 } 1128 } 1129 1130 static S390CPUDef s390_qemu_cpu_def; 1131 static S390CPUModel s390_qemu_cpu_model; 1132 1133 /* Set the qemu CPU model (on machine initialization). Must not be called 1134 * once CPUs have been created. 1135 */ 1136 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1137 const S390FeatInit feat_init) 1138 { 1139 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1140 1141 g_assert(def); 1142 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1143 1144 /* TCG emulates some features that can usually not be enabled with 1145 * the emulated machine generation. Make sure they can be enabled 1146 * when using the QEMU model by adding them to full_feat. We have 1147 * to copy the definition to do that. 1148 */ 1149 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1150 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1151 qemu_max_cpu_feat, S390_FEAT_MAX); 1152 1153 /* build the CPU model */ 1154 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1155 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1156 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1157 } 1158 1159 static void s390_qemu_cpu_model_initfn(Object *obj) 1160 { 1161 S390CPU *cpu = S390_CPU(obj); 1162 1163 cpu->model = g_malloc0(sizeof(*cpu->model)); 1164 /* copy the CPU model so we can modify it */ 1165 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1166 } 1167 1168 static void s390_max_cpu_model_initfn(Object *obj) 1169 { 1170 const S390CPUModel *max_model; 1171 S390CPU *cpu = S390_CPU(obj); 1172 Error *local_err = NULL; 1173 1174 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1175 /* "max" and "host" always work, even without CPU model support */ 1176 return; 1177 } 1178 1179 max_model = get_max_cpu_model(&local_err); 1180 if (local_err) { 1181 /* we expect errors only under KVM, when actually querying the kernel */ 1182 g_assert(kvm_enabled()); 1183 error_report_err(local_err); 1184 /* fallback to unsupported CPU models */ 1185 return; 1186 } 1187 1188 cpu->model = g_new(S390CPUModel, 1); 1189 /* copy the CPU model so we can modify it */ 1190 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1191 } 1192 1193 static void s390_cpu_model_finalize(Object *obj) 1194 { 1195 S390CPU *cpu = S390_CPU(obj); 1196 1197 g_free(cpu->model); 1198 cpu->model = NULL; 1199 } 1200 1201 static bool get_is_migration_safe(Object *obj, Error **errp) 1202 { 1203 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1204 } 1205 1206 static bool get_is_static(Object *obj, Error **errp) 1207 { 1208 return S390_CPU_GET_CLASS(obj)->is_static; 1209 } 1210 1211 static char *get_description(Object *obj, Error **errp) 1212 { 1213 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1214 } 1215 1216 void s390_cpu_model_class_register_props(ObjectClass *oc) 1217 { 1218 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1219 NULL); 1220 object_class_property_add_bool(oc, "static", get_is_static, 1221 NULL); 1222 object_class_property_add_str(oc, "description", get_description, NULL); 1223 } 1224 1225 #ifdef CONFIG_KVM 1226 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1227 { 1228 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1229 1230 xcc->kvm_required = true; 1231 xcc->desc = "KVM only: All recognized features"; 1232 } 1233 #endif 1234 1235 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1236 { 1237 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1238 1239 /* all base models are migration safe */ 1240 xcc->cpu_def = (const S390CPUDef *) data; 1241 xcc->is_migration_safe = true; 1242 xcc->is_static = true; 1243 xcc->desc = xcc->cpu_def->desc; 1244 } 1245 1246 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1247 { 1248 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1249 1250 /* model that can change between QEMU versions */ 1251 xcc->cpu_def = (const S390CPUDef *) data; 1252 xcc->is_migration_safe = true; 1253 xcc->desc = xcc->cpu_def->desc; 1254 } 1255 1256 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1257 { 1258 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1259 1260 xcc->is_migration_safe = true; 1261 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1262 qemu_hw_version()); 1263 } 1264 1265 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1266 { 1267 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1268 1269 /* 1270 * The "max" model is neither static nor migration safe. Under KVM 1271 * it represents the "host" model. Under TCG it represents some kind of 1272 * "qemu" CPU model without compat handling and maybe with some additional 1273 * CPU features that are not yet unlocked in the "qemu" model. 1274 */ 1275 xcc->desc = 1276 "Enables all features supported by the accelerator in the current host"; 1277 } 1278 1279 /* Generate type name for a cpu model. Caller has to free the string. */ 1280 static char *s390_cpu_type_name(const char *model_name) 1281 { 1282 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1283 } 1284 1285 /* Generate type name for a base cpu model. Caller has to free the string. */ 1286 static char *s390_base_cpu_type_name(const char *model_name) 1287 { 1288 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1289 } 1290 1291 ObjectClass *s390_cpu_class_by_name(const char *name) 1292 { 1293 char *typename = s390_cpu_type_name(name); 1294 ObjectClass *oc; 1295 1296 oc = object_class_by_name(typename); 1297 g_free(typename); 1298 return oc; 1299 } 1300 1301 static const TypeInfo qemu_s390_cpu_type_info = { 1302 .name = S390_CPU_TYPE_NAME("qemu"), 1303 .parent = TYPE_S390_CPU, 1304 .instance_init = s390_qemu_cpu_model_initfn, 1305 .instance_finalize = s390_cpu_model_finalize, 1306 .class_init = s390_qemu_cpu_model_class_init, 1307 }; 1308 1309 static const TypeInfo max_s390_cpu_type_info = { 1310 .name = S390_CPU_TYPE_NAME("max"), 1311 .parent = TYPE_S390_CPU, 1312 .instance_init = s390_max_cpu_model_initfn, 1313 .instance_finalize = s390_cpu_model_finalize, 1314 .class_init = s390_max_cpu_model_class_init, 1315 }; 1316 1317 #ifdef CONFIG_KVM 1318 static const TypeInfo host_s390_cpu_type_info = { 1319 .name = S390_CPU_TYPE_NAME("host"), 1320 .parent = S390_CPU_TYPE_NAME("max"), 1321 .class_init = s390_host_cpu_model_class_init, 1322 }; 1323 #endif 1324 1325 static void init_ignored_base_feat(void) 1326 { 1327 static const int feats[] = { 1328 /* MSA subfunctions that could not be available on certain machines */ 1329 S390_FEAT_KMAC_DEA, 1330 S390_FEAT_KMAC_TDEA_128, 1331 S390_FEAT_KMAC_TDEA_192, 1332 S390_FEAT_KMC_DEA, 1333 S390_FEAT_KMC_TDEA_128, 1334 S390_FEAT_KMC_TDEA_192, 1335 S390_FEAT_KM_DEA, 1336 S390_FEAT_KM_TDEA_128, 1337 S390_FEAT_KM_TDEA_192, 1338 S390_FEAT_KIMD_SHA_1, 1339 S390_FEAT_KLMD_SHA_1, 1340 /* CSSKE is deprecated on newer generations */ 1341 S390_FEAT_CONDITIONAL_SSKE, 1342 }; 1343 int i; 1344 1345 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1346 set_bit(feats[i], ignored_base_feat); 1347 } 1348 } 1349 1350 static void register_types(void) 1351 { 1352 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1353 int i; 1354 1355 init_ignored_base_feat(); 1356 1357 /* init all bitmaps from gnerated data initially */ 1358 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1359 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1360 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1361 s390_cpu_defs[i].base_feat); 1362 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1363 s390_cpu_defs[i].default_feat); 1364 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1365 s390_cpu_defs[i].full_feat); 1366 } 1367 1368 /* initialize the qemu model with latest definition */ 1369 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1370 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1371 1372 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1373 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1374 TypeInfo ti_base = { 1375 .name = base_name, 1376 .parent = TYPE_S390_CPU, 1377 .instance_init = s390_cpu_model_initfn, 1378 .instance_finalize = s390_cpu_model_finalize, 1379 .class_init = s390_base_cpu_model_class_init, 1380 .class_data = (void *) &s390_cpu_defs[i], 1381 }; 1382 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1383 TypeInfo ti = { 1384 .name = name, 1385 .parent = TYPE_S390_CPU, 1386 .instance_init = s390_cpu_model_initfn, 1387 .instance_finalize = s390_cpu_model_finalize, 1388 .class_init = s390_cpu_model_class_init, 1389 .class_data = (void *) &s390_cpu_defs[i], 1390 }; 1391 1392 type_register_static(&ti_base); 1393 type_register_static(&ti); 1394 g_free(base_name); 1395 g_free(name); 1396 } 1397 1398 type_register_static(&qemu_s390_cpu_type_info); 1399 type_register_static(&max_s390_cpu_type_info); 1400 #ifdef CONFIG_KVM 1401 type_register_static(&host_s390_cpu_type_info); 1402 #endif 1403 } 1404 1405 type_init(register_types) 1406