target/s390x/cpu_models.c

   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 "gen-features.h"
  19 #include "qapi/error.h"
  20 #include "qapi/visitor.h"
  21 #include "qemu/error-report.h"
  22 #include "qapi/qmp/qerror.h"
  23 #include "qapi/qobject-input-visitor.h"
  24 #include "qapi/qmp/qbool.h"
  25 #ifndef CONFIG_USER_ONLY
  26 #include "sysemu/arch_init.h"
  27 #endif
  28
  29 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
  30     {                                                                    \
  31         .name = _name,                                                   \
  32         .type = _type,                                                   \
  33         .gen = _gen,                                                     \
  34         .ec_ga = _ec_ga,                                                 \
  35         .mha_pow = _mha_pow,                                             \
  36         .hmfai = _hmfai,                                                 \
  37         .desc = _desc,                                                   \
  38         .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE },  \
  39         .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT },  \
  40         .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL },  \
  41     }
  42
  43 /*
  44  * CPU definiton list in order of release. For now, base features of a
  45  * following release are always a subset of base features of the previous
  46  * release. Same is correct for the other feature sets.
  47  * A BC release always follows the corresponding EC release.
  48  */
  49 static S390CPUDef s390_cpu_defs[] = {
  50     CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
  51     CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
  52     CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
  53     CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
  54     CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
  55     CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
  56     CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
  57     CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
  58     CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
  59     CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
  60     CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
  61     CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
  62     CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
  63     CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
  64     CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
  65     CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
  66     CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
  67     CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
  68     CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
  69     CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
  70     CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
  71     CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
  72     CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
  73     CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
  74     CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
  75     CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
  76     CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
  77     CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
  78     CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
  79     CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
  80     CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
  81     CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
  82 };
  83
  84 /* features part of a base model but not relevant for finding a base model */
  85 S390FeatBitmap ignored_base_feat;
  86
  87 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  88 {
  89     const S390CPUDef *def;
  90
  91     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
  92     clear_bit(feat, (unsigned long *)&def->default_feat);
  93 }
  94
  95 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  96 {
  97     int i;
  98
  99     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 100         const S390CPUDef *def = &s390_cpu_defs[i];
 101
 102         if (def->gen < gen) {
 103             continue;
 104         }
 105         if (def->gen == gen && def->ec_ga < ec_ga) {
 106             continue;
 107         }
 108
 109         clear_bit(feat, (unsigned long *)&def->default_feat);
 110     }
 111 }
 112
 113 uint32_t s390_get_hmfai(void)
 114 {
 115     static S390CPU *cpu;
 116
 117     if (!cpu) {
 118         cpu = S390_CPU(qemu_get_cpu(0));
 119     }
 120
 121     if (!cpu || !cpu->model) {
 122         return 0;
 123     }
 124     return cpu->model->def->hmfai;
 125 }
 126
 127 uint8_t s390_get_mha_pow(void)
 128 {
 129     static S390CPU *cpu;
 130
 131     if (!cpu) {
 132         cpu = S390_CPU(qemu_get_cpu(0));
 133     }
 134
 135     if (!cpu || !cpu->model) {
 136         return 0;
 137     }
 138     return cpu->model->def->mha_pow;
 139 }
 140
 141 uint32_t s390_get_ibc_val(void)
 142 {
 143     uint16_t unblocked_ibc, lowest_ibc;
 144     static S390CPU *cpu;
 145
 146     if (!cpu) {
 147         cpu = S390_CPU(qemu_get_cpu(0));
 148     }
 149
 150     if (!cpu || !cpu->model) {
 151         return 0;
 152     }
 153     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 154     lowest_ibc = cpu->model->lowest_ibc;
 155     /* the lowest_ibc always has to be <= unblocked_ibc */
 156     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 157         return 0;
 158     }
 159     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 160 }
 161
 162 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 163 {
 164     static S390CPU *cpu;
 165
 166     if (!cpu) {
 167         cpu = S390_CPU(qemu_get_cpu(0));
 168     }
 169
 170     if (!cpu || !cpu->model) {
 171         return;
 172     }
 173     s390_fill_feat_block(cpu->model->features, type, data);
 174 }
 175
 176 bool s390_has_feat(S390Feat feat)
 177 {
 178     static S390CPU *cpu;
 179
 180     if (!cpu) {
 181         cpu = S390_CPU(qemu_get_cpu(0));
 182     }
 183
 184     if (!cpu || !cpu->model) {
 185 #ifdef CONFIG_KVM
 186         if (kvm_enabled()) {
 187             if (feat == S390_FEAT_VECTOR) {
 188                 return kvm_check_extension(kvm_state,
 189                                            KVM_CAP_S390_VECTOR_REGISTERS);
 190             }
 191             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 192                 return kvm_s390_get_ri();
 193             }
 194             if (feat == S390_FEAT_MSA_EXT_3) {
 195                 return true;
 196             }
 197         }
 198 #endif
 199         if (feat == S390_FEAT_ZPCI) {
 200             return true;
 201         }
 202         return 0;
 203     }
 204     return test_bit(feat, cpu->model->features);
 205 }
 206
 207 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 208 {
 209     int i;
 210
 211     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 212         if (s390_cpu_defs[i].type == type) {
 213             return s390_cpu_defs[i].gen;
 214         }
 215     }
 216     return 0;
 217 }
 218
 219 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 220                                     S390FeatBitmap features)
 221 {
 222     const S390CPUDef *last_compatible = NULL;
 223     const S390CPUDef *matching_cpu_type = NULL;
 224     int i;
 225
 226     if (!gen) {
 227         ec_ga = 0;
 228     }
 229     if (!gen && type) {
 230         gen = s390_get_gen_for_cpu_type(type);
 231     }
 232
 233     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 234         const S390CPUDef *def = &s390_cpu_defs[i];
 235         S390FeatBitmap missing;
 236
 237         /* don't even try newer generations if we know the generation */
 238         if (gen) {
 239             if (def->gen > gen) {
 240                 break;
 241             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 242                 break;
 243             }
 244         }
 245
 246         if (features) {
 247             /* see if the model satisfies the minimum features */
 248             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 249             /*
 250              * Ignore certain features that are in the base model, but not
 251              * relevant for the search (esp. MSA subfunctions).
 252              */
 253             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 254             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 255                 break;
 256             }
 257         }
 258
 259         /* stop the search if we found the exact model */
 260         if (def->type == type && def->ec_ga == ec_ga) {
 261             return def;
 262         }
 263         /* remember if we've at least seen one with the same cpu type */
 264         if (def->type == type) {
 265             matching_cpu_type = def;
 266         }
 267         last_compatible = def;
 268     }
 269     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 270     if (matching_cpu_type) {
 271         return matching_cpu_type;
 272     }
 273     return last_compatible;
 274 }
 275
 276 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 277 {
 278     CPUListState *s = user_data;
 279     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 280     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 281     const char *details = "";
 282
 283     if (scc->is_static) {
 284         details = "(static, migration-safe)";
 285     } else if (scc->is_migration_safe) {
 286         details = "(migration-safe)";
 287     }
 288
 289     /* strip off the -s390x-cpu */
 290     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 291     (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc,
 292                       details);
 293     g_free(name);
 294 }
 295
 296 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 297 {
 298     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 299     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 300     const char *name_a = object_class_get_name((ObjectClass *)a);
 301     const char *name_b = object_class_get_name((ObjectClass *)b);
 302
 303     /* move qemu and host to the top of the list, qemu first, host second */
 304     if (name_a[0] == 'q') {
 305         return -1;
 306     } else if (name_b[0] == 'q') {
 307         return 1;
 308     } else if (name_a[0] == 'h') {
 309         return -1;
 310     } else if (name_b[0] == 'h') {
 311         return 1;
 312     }
 313
 314     /* keep the same order we have in our table (sorted by release date) */
 315     if (cc_a->cpu_def != cc_b->cpu_def) {
 316         return cc_a->cpu_def - cc_b->cpu_def;
 317     }
 318
 319     /* exact same definition - list base model first */
 320     return cc_a->is_static ? -1 : 1;
 321 }
 322
 323 void s390_cpu_list(FILE *f, fprintf_function print)
 324 {
 325     CPUListState s = {
 326         .file = f,
 327         .cpu_fprintf = print,
 328     };
 329     S390FeatGroup group;
 330     S390Feat feat;
 331     GSList *list;
 332
 333     list = object_class_get_list(TYPE_S390_CPU, false);
 334     list = g_slist_sort(list, s390_cpu_list_compare);
 335     g_slist_foreach(list, s390_print_cpu_model_list_entry, &s);
 336     g_slist_free(list);
 337
 338     (*print)(f, "\nRecognized feature flags:\n");
 339     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 340         const S390FeatDef *def = s390_feat_def(feat);
 341
 342         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 343     }
 344
 345     (*print)(f, "\nRecognized feature groups:\n");
 346     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 347         const S390FeatGroupDef *def = s390_feat_group_def(group);
 348
 349         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 350     }
 351 }
 352
 353 static S390CPUModel *get_max_cpu_model(Error **errp);
 354
 355 #ifndef CONFIG_USER_ONLY
 356 static void list_add_feat(const char *name, void *opaque);
 357
 358 static void check_unavailable_features(const S390CPUModel *max_model,
 359                                        const S390CPUModel *model,
 360                                        strList **unavailable)
 361 {
 362     S390FeatBitmap missing;
 363
 364     /* check general model compatibility */
 365     if (max_model->def->gen < model->def->gen ||
 366         (max_model->def->gen == model->def->gen &&
 367          max_model->def->ec_ga < model->def->ec_ga)) {
 368         list_add_feat("type", unavailable);
 369     }
 370
 371     /* detect missing features if any to properly report them */
 372     bitmap_andnot(missing, model->features, max_model->features,
 373                   S390_FEAT_MAX);
 374     if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 375         s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
 376     }
 377 }
 378
 379 struct CpuDefinitionInfoListData {
 380     CpuDefinitionInfoList *list;
 381     S390CPUModel *model;
 382 };
 383
 384 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
 385 {
 386     struct CpuDefinitionInfoListData *cpu_list_data = opaque;
 387     CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
 388     CpuDefinitionInfoList *entry;
 389     CpuDefinitionInfo *info;
 390     char *name = g_strdup(object_class_get_name(klass));
 391     S390CPUClass *scc = S390_CPU_CLASS(klass);
 392
 393     /* strip off the -s390x-cpu */
 394     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 395     info = g_new0(CpuDefinitionInfo, 1);
 396     info->name = name;
 397     info->has_migration_safe = true;
 398     info->migration_safe = scc->is_migration_safe;
 399     info->q_static = scc->is_static;
 400     info->q_typename = g_strdup(object_class_get_name(klass));
 401     /* check for unavailable features */
 402     if (cpu_list_data->model) {
 403         Object *obj;
 404         S390CPU *sc;
 405         obj = object_new(object_class_get_name(klass));
 406         sc = S390_CPU(obj);
 407         if (sc->model) {
 408             info->has_unavailable_features = true;
 409             check_unavailable_features(cpu_list_data->model, sc->model,
 410                                        &info->unavailable_features);
 411         }
 412         object_unref(obj);
 413     }
 414
 415     entry = g_new0(CpuDefinitionInfoList, 1);
 416     entry->value = info;
 417     entry->next = *cpu_list;
 418     *cpu_list = entry;
 419 }
 420
 421 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
 422 {
 423     struct CpuDefinitionInfoListData list_data = {
 424         .list = NULL,
 425     };
 426
 427     list_data.model = get_max_cpu_model(errp);
 428     if (*errp) {
 429         error_free(*errp);
 430         *errp = NULL;
 431     }
 432
 433     object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
 434                          &list_data);
 435
 436     return list_data.list;
 437 }
 438
 439 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 440                                 Error **errp)
 441 {
 442     const QDict *qdict = NULL;
 443     const QDictEntry *e;
 444     Visitor *visitor;
 445     ObjectClass *oc;
 446     S390CPU *cpu;
 447     Object *obj;
 448
 449     if (info->props) {
 450         qdict = qobject_to_qdict(info->props);
 451         if (!qdict) {
 452             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 453             return;
 454         }
 455     }
 456
 457     oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
 458     if (!oc) {
 459         error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
 460         return;
 461     }
 462     if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
 463         error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
 464         return;
 465     }
 466     obj = object_new(object_class_get_name(oc));
 467     cpu = S390_CPU(obj);
 468
 469     if (!cpu->model) {
 470         error_setg(errp, "Details about the host CPU model are not available, "
 471                          "it cannot be used.");
 472         object_unref(obj);
 473         return;
 474     }
 475
 476     if (qdict) {
 477         visitor = qobject_input_visitor_new(info->props);
 478         visit_start_struct(visitor, NULL, NULL, 0, errp);
 479         if (*errp) {
 480             object_unref(obj);
 481             return;
 482         }
 483         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
 484             object_property_set(obj, visitor, e->key, errp);
 485             if (*errp) {
 486                 break;
 487             }
 488         }
 489         if (!*errp) {
 490             visit_check_struct(visitor, errp);
 491         }
 492         visit_end_struct(visitor, NULL);
 493         visit_free(visitor);
 494         if (*errp) {
 495             object_unref(obj);
 496             return;
 497         }
 498     }
 499
 500     /* copy the model and throw the cpu away */
 501     memcpy(model, cpu->model, sizeof(*model));
 502     object_unref(obj);
 503 }
 504
 505 static void qdict_add_disabled_feat(const char *name, void *opaque)
 506 {
 507     qdict_put_bool(opaque, name, false);
 508 }
 509
 510 static void qdict_add_enabled_feat(const char *name, void *opaque)
 511 {
 512     qdict_put_bool(opaque, name, true);
 513 }
 514
 515 /* convert S390CPUDef into a static CpuModelInfo */
 516 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
 517                                 bool delta_changes)
 518 {
 519     QDict *qdict = qdict_new();
 520     S390FeatBitmap bitmap;
 521
 522     /* always fallback to the static base model */
 523     info->name = g_strdup_printf("%s-base", model->def->name);
 524
 525     if (delta_changes) {
 526         /* features deleted from the base feature set */
 527         bitmap_andnot(bitmap, model->def->base_feat, model->features,
 528                       S390_FEAT_MAX);
 529         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 530             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 531         }
 532
 533         /* features added to the base feature set */
 534         bitmap_andnot(bitmap, model->features, model->def->base_feat,
 535                       S390_FEAT_MAX);
 536         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 537             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
 538         }
 539     } else {
 540         /* expand all features */
 541         s390_feat_bitmap_to_ascii(model->features, qdict,
 542                                   qdict_add_enabled_feat);
 543         bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
 544         s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 545     }
 546
 547     if (!qdict_size(qdict)) {
 548         QDECREF(qdict);
 549     } else {
 550         info->props = QOBJECT(qdict);
 551         info->has_props = true;
 552     }
 553 }
 554
 555 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type,
 556                                                       CpuModelInfo *model,
 557                                                       Error **errp)
 558 {
 559     CpuModelExpansionInfo *expansion_info = NULL;
 560     S390CPUModel s390_model;
 561     bool delta_changes = false;
 562
 563     /* convert it to our internal representation */
 564     cpu_model_from_info(&s390_model, model, errp);
 565     if (*errp) {
 566         return NULL;
 567     }
 568
 569     if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
 570         delta_changes = true;
 571     } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 572         error_setg(errp, "The requested expansion type is not supported.");
 573         return NULL;
 574     }
 575
 576     /* convert it back to a static representation */
 577     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 578     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 579     cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
 580     return expansion_info;
 581 }
 582
 583 static void list_add_feat(const char *name, void *opaque)
 584 {
 585     strList **last = (strList **) opaque;
 586     strList *entry;
 587
 588     entry = g_new0(strList, 1);
 589     entry->value = g_strdup(name);
 590     entry->next = *last;
 591     *last = entry;
 592 }
 593
 594 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa,
 595                                                      CpuModelInfo *infob,
 596                                                      Error **errp)
 597 {
 598     CpuModelCompareResult feat_result, gen_result;
 599     CpuModelCompareInfo *compare_info;
 600     S390FeatBitmap missing, added;
 601     S390CPUModel modela, modelb;
 602
 603     /* convert both models to our internal representation */
 604     cpu_model_from_info(&modela, infoa, errp);
 605     if (*errp) {
 606         return NULL;
 607     }
 608     cpu_model_from_info(&modelb, infob, errp);
 609     if (*errp) {
 610         return NULL;
 611     }
 612     compare_info = g_new0(CpuModelCompareInfo, 1);
 613
 614     /* check the cpu generation and ga level */
 615     if (modela.def->gen == modelb.def->gen) {
 616         if (modela.def->ec_ga == modelb.def->ec_ga) {
 617             /* ec and corresponding bc are identical */
 618             gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 619         } else if (modela.def->ec_ga < modelb.def->ec_ga) {
 620             gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 621         } else {
 622             gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 623         }
 624     } else if (modela.def->gen < modelb.def->gen) {
 625         gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 626     } else {
 627         gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 628     }
 629     if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 630         /* both models cannot be made identical */
 631         list_add_feat("type", &compare_info->responsible_properties);
 632     }
 633
 634     /* check the feature set */
 635     if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
 636         feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 637     } else {
 638         bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
 639         s390_feat_bitmap_to_ascii(missing,
 640                                   &compare_info->responsible_properties,
 641                                   list_add_feat);
 642         bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
 643         s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
 644                                   list_add_feat);
 645         if (bitmap_empty(missing, S390_FEAT_MAX)) {
 646             feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 647         } else if (bitmap_empty(added, S390_FEAT_MAX)) {
 648             feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 649         } else {
 650             feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 651         }
 652     }
 653
 654     /* combine the results */
 655     if (gen_result == feat_result) {
 656         compare_info->result = gen_result;
 657     } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 658         compare_info->result = gen_result;
 659     } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 660         compare_info->result = feat_result;
 661     } else {
 662         compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 663     }
 664     return compare_info;
 665 }
 666
 667 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa,
 668                                                     CpuModelInfo *infob,
 669                                                     Error **errp)
 670 {
 671     CpuModelBaselineInfo *baseline_info;
 672     S390CPUModel modela, modelb, model;
 673     uint16_t cpu_type;
 674     uint8_t max_gen_ga;
 675     uint8_t max_gen;
 676
 677     /* convert both models to our internal representation */
 678     cpu_model_from_info(&modela, infoa, errp);
 679     if (*errp) {
 680         return NULL;
 681     }
 682
 683     cpu_model_from_info(&modelb, infob, errp);
 684     if (*errp) {
 685         return NULL;
 686     }
 687
 688     /* features both models support */
 689     bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
 690
 691     /* detect the maximum model not regarding features */
 692     if (modela.def->gen == modelb.def->gen) {
 693         if (modela.def->type == modelb.def->type) {
 694             cpu_type = modela.def->type;
 695         } else {
 696             cpu_type = 0;
 697         }
 698         max_gen = modela.def->gen;
 699         max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
 700     } else if (modela.def->gen > modelb.def->gen) {
 701         cpu_type = modelb.def->type;
 702         max_gen = modelb.def->gen;
 703         max_gen_ga = modelb.def->ec_ga;
 704     } else {
 705         cpu_type = modela.def->type;
 706         max_gen = modela.def->gen;
 707         max_gen_ga = modela.def->ec_ga;
 708     }
 709
 710     model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
 711                                   model.features);
 712     /* strip off features not part of the max model */
 713     bitmap_and(model.features, model.features, model.def->full_feat,
 714                S390_FEAT_MAX);
 715
 716     baseline_info = g_new0(CpuModelBaselineInfo, 1);
 717     baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
 718     cpu_info_from_model(baseline_info->model, &model, true);
 719     return baseline_info;
 720 }
 721 #endif
 722
 723 static void check_consistency(const S390CPUModel *model)
 724 {
 725     static int dep[][2] = {
 726         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 727         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 728         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 729         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 730         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 731         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 732         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 733         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 734         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 735         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 736         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 737         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 738         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 739         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 740         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 741         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 742         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 743         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 744         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 745         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 746         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 747         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 748         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 749         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 750         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 751         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 752         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 753         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 754         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 755         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 756         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 757         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 758         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 759         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 760         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 761         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 762         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 763         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 764         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 765         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 766         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 767     };
 768     int i;
 769
 770     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 771         if (test_bit(dep[i][0], model->features) &&
 772             !test_bit(dep[i][1], model->features)) {
 773             warn_report("\'%s\' requires \'%s\'.",
 774                         s390_feat_def(dep[i][0])->name,
 775                         s390_feat_def(dep[i][1])->name);
 776         }
 777     }
 778 }
 779
 780 static void error_prepend_missing_feat(const char *name, void *opaque)
 781 {
 782     error_prepend((Error **) opaque, "%s ", name);
 783 }
 784
 785 static void check_compatibility(const S390CPUModel *max_model,
 786                                 const S390CPUModel *model, Error **errp)
 787 {
 788     S390FeatBitmap missing;
 789
 790     if (model->def->gen > max_model->def->gen) {
 791         error_setg(errp, "Selected CPU generation is too new. Maximum "
 792                    "supported model in the configuration: \'%s\'",
 793                    max_model->def->name);
 794         return;
 795     } else if (model->def->gen == max_model->def->gen &&
 796                model->def->ec_ga > max_model->def->ec_ga) {
 797         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 798                    "supported model in the configuration: \'%s\'",
 799                    max_model->def->name);
 800         return;
 801     }
 802
 803     /* detect the missing features to properly report them */
 804     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 805     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 806         return;
 807     }
 808
 809     error_setg(errp, " ");
 810     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 811     error_prepend(errp, "Some features requested in the CPU model are not "
 812                   "available in the configuration: ");
 813 }
 814
 815 /**
 816  * The base TCG CPU model "qemu" is based on the z900. However, we already
 817  * can also emulate some additional features of later CPU generations, so
 818  * we add these additional feature bits here.
 819  */
 820 static void add_qemu_cpu_model_features(S390FeatBitmap fbm)
 821 {
 822     static const int feats[] = {
 823         S390_FEAT_DAT_ENH,
 824         S390_FEAT_IDTE_SEGMENT,
 825         S390_FEAT_STFLE,
 826         S390_FEAT_SENSE_RUNNING_STATUS,
 827         S390_FEAT_EXTENDED_IMMEDIATE,
 828         S390_FEAT_EXTENDED_TRANSLATION_2,
 829         S390_FEAT_MSA,
 830         S390_FEAT_EXTENDED_TRANSLATION_3,
 831         S390_FEAT_LONG_DISPLACEMENT,
 832         S390_FEAT_LONG_DISPLACEMENT_FAST,
 833         S390_FEAT_ETF2_ENH,
 834         S390_FEAT_STORE_CLOCK_FAST,
 835         S390_FEAT_MOVE_WITH_OPTIONAL_SPEC,
 836         S390_FEAT_ETF3_ENH,
 837         S390_FEAT_COMPARE_AND_SWAP_AND_STORE,
 838         S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2,
 839         S390_FEAT_GENERAL_INSTRUCTIONS_EXT,
 840         S390_FEAT_EXECUTE_EXT,
 841         S390_FEAT_FLOATING_POINT_SUPPPORT_ENH,
 842         S390_FEAT_STFLE_45,
 843         S390_FEAT_STFLE_49,
 844         S390_FEAT_LOCAL_TLB_CLEARING,
 845         S390_FEAT_STFLE_53,
 846         S390_FEAT_MSA_EXT_5,
 847         S390_FEAT_MSA_EXT_3,
 848         S390_FEAT_MSA_EXT_4,
 849     };
 850     int i;
 851
 852     for (i = 0; i < ARRAY_SIZE(feats); i++) {
 853         set_bit(feats[i], fbm);
 854     }
 855 }
 856
 857 static S390CPUModel *get_max_cpu_model(Error **errp)
 858 {
 859     static S390CPUModel max_model;
 860     static bool cached;
 861
 862     if (cached) {
 863         return &max_model;
 864     }
 865
 866     if (kvm_enabled()) {
 867         kvm_s390_get_host_cpu_model(&max_model, errp);
 868     } else {
 869         /* TCG emulates a z900 (with some optional additional features) */
 870         max_model.def = &s390_cpu_defs[0];
 871         bitmap_copy(max_model.features, max_model.def->default_feat,
 872                     S390_FEAT_MAX);
 873         add_qemu_cpu_model_features(max_model.features);
 874     }
 875     if (!*errp) {
 876         cached = true;
 877         return &max_model;
 878     }
 879     return NULL;
 880 }
 881
 882 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
 883 {
 884 #ifndef CONFIG_USER_ONLY
 885     static S390CPUModel applied_model;
 886     static bool applied;
 887
 888     /*
 889      * We have the same model for all VCPUs. KVM can only be configured before
 890      * any VCPUs are defined in KVM.
 891      */
 892     if (applied) {
 893         if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
 894             error_setg(errp, "Mixed CPU models are not supported on s390x.");
 895         }
 896         return;
 897     }
 898
 899     if (kvm_enabled()) {
 900         kvm_s390_apply_cpu_model(model, errp);
 901     }
 902
 903     if (!*errp) {
 904         applied = true;
 905         if (model) {
 906             applied_model = *model;
 907         }
 908     }
 909 #endif
 910 }
 911
 912 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 913 {
 914     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 915     S390CPU *cpu = S390_CPU(cs);
 916     const S390CPUModel *max_model;
 917
 918     if (xcc->kvm_required && !kvm_enabled()) {
 919         error_setg(errp, "CPU definition requires KVM");
 920         return;
 921     }
 922
 923     if (!cpu->model) {
 924         /* no host model support -> perform compatibility stuff */
 925         apply_cpu_model(NULL, errp);
 926         return;
 927     }
 928
 929     max_model = get_max_cpu_model(errp);
 930     if (*errp) {
 931         error_prepend(errp, "CPU models are not available: ");
 932         return;
 933     }
 934
 935     /* copy over properties that can vary */
 936     cpu->model->lowest_ibc = max_model->lowest_ibc;
 937     cpu->model->cpu_id = max_model->cpu_id;
 938     cpu->model->cpu_id_format = max_model->cpu_id_format;
 939     cpu->model->cpu_ver = max_model->cpu_ver;
 940
 941     check_consistency(cpu->model);
 942     check_compatibility(max_model, cpu->model, errp);
 943     if (*errp) {
 944         return;
 945     }
 946
 947     apply_cpu_model(cpu->model, errp);
 948
 949 #if !defined(CONFIG_USER_ONLY)
 950     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 951     if (tcg_enabled()) {
 952         /* basic mode, write the cpu address into the first 4 bit of the ID */
 953         cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
 954     }
 955 #endif
 956 }
 957
 958 static void get_feature(Object *obj, Visitor *v, const char *name,
 959                         void *opaque, Error **errp)
 960 {
 961     S390Feat feat = (S390Feat) opaque;
 962     S390CPU *cpu = S390_CPU(obj);
 963     bool value;
 964
 965     if (!cpu->model) {
 966         error_setg(errp, "Details about the host CPU model are not available, "
 967                          "features cannot be queried.");
 968         return;
 969     }
 970
 971     value = test_bit(feat, cpu->model->features);
 972     visit_type_bool(v, name, &value, errp);
 973 }
 974
 975 static void set_feature(Object *obj, Visitor *v, const char *name,
 976                         void *opaque, Error **errp)
 977 {
 978     S390Feat feat = (S390Feat) opaque;
 979     DeviceState *dev = DEVICE(obj);
 980     S390CPU *cpu = S390_CPU(obj);
 981     bool value;
 982
 983     if (dev->realized) {
 984         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 985                    "it was realized", name, object_get_typename(obj));
 986         return;
 987     } else if (!cpu->model) {
 988         error_setg(errp, "Details about the host CPU model are not available, "
 989                          "features cannot be changed.");
 990         return;
 991     }
 992
 993     visit_type_bool(v, name, &value, errp);
 994     if (*errp) {
 995         return;
 996     }
 997     if (value) {
 998         if (!test_bit(feat, cpu->model->def->full_feat)) {
 999             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1000                        " it was introduced with later models.",
1001                        name, cpu->model->def->name);
1002             return;
1003         }
1004         set_bit(feat, cpu->model->features);
1005     } else {
1006         clear_bit(feat, cpu->model->features);
1007     }
1008 }
1009
1010 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1011                               void *opaque, Error **errp)
1012 {
1013     S390FeatGroup group = (S390FeatGroup) opaque;
1014     const S390FeatGroupDef *def = s390_feat_group_def(group);
1015     S390CPU *cpu = S390_CPU(obj);
1016     S390FeatBitmap tmp;
1017     bool value;
1018
1019     if (!cpu->model) {
1020         error_setg(errp, "Details about the host CPU model are not available, "
1021                          "features cannot be queried.");
1022         return;
1023     }
1024
1025     /* a group is enabled if all features are enabled */
1026     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1027     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1028     visit_type_bool(v, name, &value, errp);
1029 }
1030
1031 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1032                               void *opaque, Error **errp)
1033 {
1034     S390FeatGroup group = (S390FeatGroup) opaque;
1035     const S390FeatGroupDef *def = s390_feat_group_def(group);
1036     DeviceState *dev = DEVICE(obj);
1037     S390CPU *cpu = S390_CPU(obj);
1038     bool value;
1039
1040     if (dev->realized) {
1041         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1042                    "it was realized", name, object_get_typename(obj));
1043         return;
1044     } else if (!cpu->model) {
1045         error_setg(errp, "Details about the host CPU model are not available, "
1046                          "features cannot be changed.");
1047         return;
1048     }
1049
1050     visit_type_bool(v, name, &value, errp);
1051     if (*errp) {
1052         return;
1053     }
1054     if (value) {
1055         /* groups are added in one shot, so an intersect is sufficient */
1056         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1057                                S390_FEAT_MAX)) {
1058             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1059                        " it was introduced with later models.",
1060                        name, cpu->model->def->name);
1061             return;
1062         }
1063         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1064                   S390_FEAT_MAX);
1065     } else {
1066         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1067                       S390_FEAT_MAX);
1068     }
1069 }
1070
1071 void s390_cpu_model_register_props(Object *obj)
1072 {
1073     S390FeatGroup group;
1074     S390Feat feat;
1075
1076     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1077         const S390FeatDef *def = s390_feat_def(feat);
1078         object_property_add(obj, def->name, "bool", get_feature,
1079                             set_feature, NULL, (void *) feat, NULL);
1080         object_property_set_description(obj, def->name, def->desc , NULL);
1081     }
1082     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1083         const S390FeatGroupDef *def = s390_feat_group_def(group);
1084         object_property_add(obj, def->name, "bool", get_feature_group,
1085                             set_feature_group, NULL, (void *) group, NULL);
1086         object_property_set_description(obj, def->name, def->desc , NULL);
1087     }
1088 }
1089
1090 static void s390_cpu_model_initfn(Object *obj)
1091 {
1092     S390CPU *cpu = S390_CPU(obj);
1093     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1094
1095     cpu->model = g_malloc0(sizeof(*cpu->model));
1096     /* copy the model, so we can modify it */
1097     cpu->model->def = xcc->cpu_def;
1098     if (xcc->is_static) {
1099         /* base model - features will never change */
1100         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1101                     S390_FEAT_MAX);
1102     } else {
1103         /* latest model - features can change */
1104         bitmap_copy(cpu->model->features,
1105                     cpu->model->def->default_feat, S390_FEAT_MAX);
1106     }
1107 }
1108
1109 #ifdef CONFIG_KVM
1110 static void s390_host_cpu_model_initfn(Object *obj)
1111 {
1112     S390CPU *cpu = S390_CPU(obj);
1113     Error *err = NULL;
1114
1115     if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1116         return;
1117     }
1118
1119     cpu->model = g_malloc0(sizeof(*cpu->model));
1120     kvm_s390_get_host_cpu_model(cpu->model, &err);
1121     if (err) {
1122         error_report_err(err);
1123         g_free(cpu->model);
1124         /* fallback to unsupported cpu models */
1125         cpu->model = NULL;
1126     }
1127 }
1128 #endif
1129
1130 static void s390_qemu_cpu_model_initfn(Object *obj)
1131 {
1132     static S390CPUDef s390_qemu_cpu_defs;
1133     S390CPU *cpu = S390_CPU(obj);
1134
1135     cpu->model = g_malloc0(sizeof(*cpu->model));
1136     /* TCG emulates a z900 (with some optional additional features) */
1137     memcpy(&s390_qemu_cpu_defs, &s390_cpu_defs[0], sizeof(s390_qemu_cpu_defs));
1138     add_qemu_cpu_model_features(s390_qemu_cpu_defs.full_feat);
1139     cpu->model->def = &s390_qemu_cpu_defs;
1140     bitmap_copy(cpu->model->features, cpu->model->def->default_feat,
1141                 S390_FEAT_MAX);
1142 }
1143
1144 static void s390_cpu_model_finalize(Object *obj)
1145 {
1146     S390CPU *cpu = S390_CPU(obj);
1147
1148     g_free(cpu->model);
1149     cpu->model = NULL;
1150 }
1151
1152 static bool get_is_migration_safe(Object *obj, Error **errp)
1153 {
1154     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1155 }
1156
1157 static bool get_is_static(Object *obj, Error **errp)
1158 {
1159     return S390_CPU_GET_CLASS(obj)->is_static;
1160 }
1161
1162 static char *get_description(Object *obj, Error **errp)
1163 {
1164     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1165 }
1166
1167 void s390_cpu_model_class_register_props(ObjectClass *oc)
1168 {
1169     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1170                                    NULL, NULL);
1171     object_class_property_add_bool(oc, "static", get_is_static,
1172                                    NULL, NULL);
1173     object_class_property_add_str(oc, "description", get_description, NULL,
1174                                   NULL);
1175 }
1176
1177 #ifdef CONFIG_KVM
1178 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1179 {
1180     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1181
1182     xcc->kvm_required = true;
1183     xcc->desc = "KVM only: All recognized features";
1184 }
1185 #endif
1186
1187 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1188 {
1189     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1190
1191     /* all base models are migration safe */
1192     xcc->cpu_def = (const S390CPUDef *) data;
1193     xcc->is_migration_safe = true;
1194     xcc->is_static = true;
1195     xcc->desc = xcc->cpu_def->desc;
1196 }
1197
1198 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1199 {
1200     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1201
1202     /* model that can change between QEMU versions */
1203     xcc->cpu_def = (const S390CPUDef *) data;
1204     xcc->is_migration_safe = true;
1205     xcc->desc = xcc->cpu_def->desc;
1206 }
1207
1208 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1209 {
1210     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1211
1212     xcc->is_migration_safe = true;
1213     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1214                                 qemu_hw_version());
1215 }
1216
1217 /* Generate type name for a cpu model. Caller has to free the string. */
1218 static char *s390_cpu_type_name(const char *model_name)
1219 {
1220     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1221 }
1222
1223 /* Generate type name for a base cpu model. Caller has to free the string. */
1224 static char *s390_base_cpu_type_name(const char *model_name)
1225 {
1226     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1227 }
1228
1229 ObjectClass *s390_cpu_class_by_name(const char *name)
1230 {
1231     char *typename = s390_cpu_type_name(name);
1232     ObjectClass *oc;
1233
1234     oc = object_class_by_name(typename);
1235     g_free(typename);
1236     return oc;
1237 }
1238
1239 static const TypeInfo qemu_s390_cpu_type_info = {
1240     .name = S390_CPU_TYPE_NAME("qemu"),
1241     .parent = TYPE_S390_CPU,
1242     .instance_init = s390_qemu_cpu_model_initfn,
1243     .instance_finalize = s390_cpu_model_finalize,
1244     .class_init = s390_qemu_cpu_model_class_init,
1245 };
1246
1247 #ifdef CONFIG_KVM
1248 static const TypeInfo host_s390_cpu_type_info = {
1249     .name = S390_CPU_TYPE_NAME("host"),
1250     .parent = TYPE_S390_CPU,
1251     .instance_init = s390_host_cpu_model_initfn,
1252     .instance_finalize = s390_cpu_model_finalize,
1253     .class_init = s390_host_cpu_model_class_init,
1254 };
1255 #endif
1256
1257 static void init_ignored_base_feat(void)
1258 {
1259     static const int feats[] = {
1260          /* MSA subfunctions that could not be available on certain machines */
1261          S390_FEAT_KMAC_DEA,
1262          S390_FEAT_KMAC_TDEA_128,
1263          S390_FEAT_KMAC_TDEA_192,
1264          S390_FEAT_KMC_DEA,
1265          S390_FEAT_KMC_TDEA_128,
1266          S390_FEAT_KMC_TDEA_192,
1267          S390_FEAT_KM_DEA,
1268          S390_FEAT_KM_TDEA_128,
1269          S390_FEAT_KM_TDEA_192,
1270          S390_FEAT_KIMD_SHA_1,
1271          S390_FEAT_KLMD_SHA_1,
1272     };
1273     int i;
1274
1275     for (i = 0; i < ARRAY_SIZE(feats); i++) {
1276         set_bit(feats[i], ignored_base_feat);
1277     }
1278 }
1279
1280 static void register_types(void)
1281 {
1282     int i;
1283
1284     init_ignored_base_feat();
1285
1286     /* init all bitmaps from gnerated data initially */
1287     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1288         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1289                               s390_cpu_defs[i].base_feat);
1290         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1291                               s390_cpu_defs[i].default_feat);
1292         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1293                               s390_cpu_defs[i].full_feat);
1294     }
1295
1296     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1297         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1298         TypeInfo ti_base = {
1299             .name = base_name,
1300             .parent = TYPE_S390_CPU,
1301             .instance_init = s390_cpu_model_initfn,
1302             .instance_finalize = s390_cpu_model_finalize,
1303             .class_init = s390_base_cpu_model_class_init,
1304             .class_data = (void *) &s390_cpu_defs[i],
1305         };
1306         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1307         TypeInfo ti = {
1308             .name = name,
1309             .parent = TYPE_S390_CPU,
1310             .instance_init = s390_cpu_model_initfn,
1311             .instance_finalize = s390_cpu_model_finalize,
1312             .class_init = s390_cpu_model_class_init,
1313             .class_data = (void *) &s390_cpu_defs[i],
1314         };
1315
1316         type_register_static(&ti_base);
1317         type_register_static(&ti);
1318         g_free(base_name);
1319         g_free(name);
1320     }
1321
1322     type_register_static(&qemu_s390_cpu_type_info);
1323 #ifdef CONFIG_KVM
1324     type_register_static(&host_s390_cpu_type_info);
1325 #endif
1326 }
1327
1328 type_init(register_types)