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 "qapi/error.h"
  19 #include "qapi/visitor.h"
  20 #include "qemu/error-report.h"
  21 #include "qapi/qmp/qerror.h"
  22 #include "qapi/qobject-input-visitor.h"
  23 #include "qapi/qmp/qdict.h"
  24 #ifndef CONFIG_USER_ONLY
  25 #include "sysemu/arch_init.h"
  26 #include "hw/pci/pci.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     CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
  83 };
  84
  85 #define QEMU_MAX_CPU_TYPE 0x2827
  86 #define QEMU_MAX_CPU_GEN 12
  87 #define QEMU_MAX_CPU_EC_GA 2
  88 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
  89 static S390FeatBitmap qemu_max_cpu_feat;
  90
  91 /* features part of a base model but not relevant for finding a base model */
  92 S390FeatBitmap ignored_base_feat;
  93
  94 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  95 {
  96     const S390CPUDef *def;
  97
  98     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
  99     clear_bit(feat, (unsigned long *)&def->default_feat);
 100 }
 101
 102 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 103 {
 104     int i;
 105
 106     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 107         const S390CPUDef *def = &s390_cpu_defs[i];
 108
 109         if (def->gen < gen) {
 110             continue;
 111         }
 112         if (def->gen == gen && def->ec_ga < ec_ga) {
 113             continue;
 114         }
 115
 116         clear_bit(feat, (unsigned long *)&def->default_feat);
 117     }
 118 }
 119
 120 uint32_t s390_get_hmfai(void)
 121 {
 122     static S390CPU *cpu;
 123
 124     if (!cpu) {
 125         cpu = S390_CPU(qemu_get_cpu(0));
 126     }
 127
 128     if (!cpu || !cpu->model) {
 129         return 0;
 130     }
 131     return cpu->model->def->hmfai;
 132 }
 133
 134 uint8_t s390_get_mha_pow(void)
 135 {
 136     static S390CPU *cpu;
 137
 138     if (!cpu) {
 139         cpu = S390_CPU(qemu_get_cpu(0));
 140     }
 141
 142     if (!cpu || !cpu->model) {
 143         return 0;
 144     }
 145     return cpu->model->def->mha_pow;
 146 }
 147
 148 uint32_t s390_get_ibc_val(void)
 149 {
 150     uint16_t unblocked_ibc, lowest_ibc;
 151     static S390CPU *cpu;
 152
 153     if (!cpu) {
 154         cpu = S390_CPU(qemu_get_cpu(0));
 155     }
 156
 157     if (!cpu || !cpu->model) {
 158         return 0;
 159     }
 160     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 161     lowest_ibc = cpu->model->lowest_ibc;
 162     /* the lowest_ibc always has to be <= unblocked_ibc */
 163     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 164         return 0;
 165     }
 166     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 167 }
 168
 169 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 170 {
 171     static S390CPU *cpu;
 172
 173     if (!cpu) {
 174         cpu = S390_CPU(qemu_get_cpu(0));
 175     }
 176
 177     if (!cpu || !cpu->model) {
 178         return;
 179     }
 180     s390_fill_feat_block(cpu->model->features, type, data);
 181 }
 182
 183 bool s390_has_feat(S390Feat feat)
 184 {
 185     static S390CPU *cpu;
 186
 187     if (!cpu) {
 188         cpu = S390_CPU(qemu_get_cpu(0));
 189     }
 190
 191     if (!cpu || !cpu->model) {
 192 #ifdef CONFIG_KVM
 193         if (kvm_enabled()) {
 194             if (feat == S390_FEAT_VECTOR) {
 195                 return kvm_check_extension(kvm_state,
 196                                            KVM_CAP_S390_VECTOR_REGISTERS);
 197             }
 198             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 199                 return kvm_s390_get_ri();
 200             }
 201             if (feat == S390_FEAT_MSA_EXT_3) {
 202                 return true;
 203             }
 204         }
 205 #endif
 206         if (feat == S390_FEAT_ZPCI) {
 207             return true;
 208         }
 209         return 0;
 210     }
 211     return test_bit(feat, cpu->model->features);
 212 }
 213
 214 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 215 {
 216     int i;
 217
 218     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 219         if (s390_cpu_defs[i].type == type) {
 220             return s390_cpu_defs[i].gen;
 221         }
 222     }
 223     return 0;
 224 }
 225
 226 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 227                                     S390FeatBitmap features)
 228 {
 229     const S390CPUDef *last_compatible = NULL;
 230     const S390CPUDef *matching_cpu_type = NULL;
 231     int i;
 232
 233     if (!gen) {
 234         ec_ga = 0;
 235     }
 236     if (!gen && type) {
 237         gen = s390_get_gen_for_cpu_type(type);
 238     }
 239
 240     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 241         const S390CPUDef *def = &s390_cpu_defs[i];
 242         S390FeatBitmap missing;
 243
 244         /* don't even try newer generations if we know the generation */
 245         if (gen) {
 246             if (def->gen > gen) {
 247                 break;
 248             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 249                 break;
 250             }
 251         }
 252
 253         if (features) {
 254             /* see if the model satisfies the minimum features */
 255             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 256             /*
 257              * Ignore certain features that are in the base model, but not
 258              * relevant for the search (esp. MSA subfunctions).
 259              */
 260             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 261             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 262                 break;
 263             }
 264         }
 265
 266         /* stop the search if we found the exact model */
 267         if (def->type == type && def->ec_ga == ec_ga) {
 268             return def;
 269         }
 270         /* remember if we've at least seen one with the same cpu type */
 271         if (def->type == type) {
 272             matching_cpu_type = def;
 273         }
 274         last_compatible = def;
 275     }
 276     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 277     if (matching_cpu_type) {
 278         return matching_cpu_type;
 279     }
 280     return last_compatible;
 281 }
 282
 283 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 284 {
 285     CPUListState *s = user_data;
 286     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 287     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 288     const char *details = "";
 289
 290     if (scc->is_static) {
 291         details = "(static, migration-safe)";
 292     } else if (scc->is_migration_safe) {
 293         details = "(migration-safe)";
 294     }
 295
 296     /* strip off the -s390x-cpu */
 297     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 298     (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc,
 299                       details);
 300     g_free(name);
 301 }
 302
 303 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 304 {
 305     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 306     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 307     const char *name_a = object_class_get_name((ObjectClass *)a);
 308     const char *name_b = object_class_get_name((ObjectClass *)b);
 309
 310     /* move qemu and host to the top of the list, qemu first, host second */
 311     if (name_a[0] == 'q') {
 312         return -1;
 313     } else if (name_b[0] == 'q') {
 314         return 1;
 315     } else if (name_a[0] == 'h') {
 316         return -1;
 317     } else if (name_b[0] == 'h') {
 318         return 1;
 319     }
 320
 321     /* keep the same order we have in our table (sorted by release date) */
 322     if (cc_a->cpu_def != cc_b->cpu_def) {
 323         return cc_a->cpu_def - cc_b->cpu_def;
 324     }
 325
 326     /* exact same definition - list base model first */
 327     return cc_a->is_static ? -1 : 1;
 328 }
 329
 330 void s390_cpu_list(FILE *f, fprintf_function print)
 331 {
 332     CPUListState s = {
 333         .file = f,
 334         .cpu_fprintf = print,
 335     };
 336     S390FeatGroup group;
 337     S390Feat feat;
 338     GSList *list;
 339
 340     list = object_class_get_list(TYPE_S390_CPU, false);
 341     list = g_slist_sort(list, s390_cpu_list_compare);
 342     g_slist_foreach(list, s390_print_cpu_model_list_entry, &s);
 343     g_slist_free(list);
 344
 345     (*print)(f, "\nRecognized feature flags:\n");
 346     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 347         const S390FeatDef *def = s390_feat_def(feat);
 348
 349         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 350     }
 351
 352     (*print)(f, "\nRecognized feature groups:\n");
 353     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 354         const S390FeatGroupDef *def = s390_feat_group_def(group);
 355
 356         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 357     }
 358 }
 359
 360 static S390CPUModel *get_max_cpu_model(Error **errp);
 361
 362 #ifndef CONFIG_USER_ONLY
 363 static void list_add_feat(const char *name, void *opaque);
 364
 365 static void check_unavailable_features(const S390CPUModel *max_model,
 366                                        const S390CPUModel *model,
 367                                        strList **unavailable)
 368 {
 369     S390FeatBitmap missing;
 370
 371     /* check general model compatibility */
 372     if (max_model->def->gen < model->def->gen ||
 373         (max_model->def->gen == model->def->gen &&
 374          max_model->def->ec_ga < model->def->ec_ga)) {
 375         list_add_feat("type", unavailable);
 376     }
 377
 378     /* detect missing features if any to properly report them */
 379     bitmap_andnot(missing, model->features, max_model->features,
 380                   S390_FEAT_MAX);
 381     if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 382         s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
 383     }
 384 }
 385
 386 struct CpuDefinitionInfoListData {
 387     CpuDefinitionInfoList *list;
 388     S390CPUModel *model;
 389 };
 390
 391 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
 392 {
 393     struct CpuDefinitionInfoListData *cpu_list_data = opaque;
 394     CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
 395     CpuDefinitionInfoList *entry;
 396     CpuDefinitionInfo *info;
 397     char *name = g_strdup(object_class_get_name(klass));
 398     S390CPUClass *scc = S390_CPU_CLASS(klass);
 399
 400     /* strip off the -s390x-cpu */
 401     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 402     info = g_new0(CpuDefinitionInfo, 1);
 403     info->name = name;
 404     info->has_migration_safe = true;
 405     info->migration_safe = scc->is_migration_safe;
 406     info->q_static = scc->is_static;
 407     info->q_typename = g_strdup(object_class_get_name(klass));
 408     /* check for unavailable features */
 409     if (cpu_list_data->model) {
 410         Object *obj;
 411         S390CPU *sc;
 412         obj = object_new(object_class_get_name(klass));
 413         sc = S390_CPU(obj);
 414         if (sc->model) {
 415             info->has_unavailable_features = true;
 416             check_unavailable_features(cpu_list_data->model, sc->model,
 417                                        &info->unavailable_features);
 418         }
 419         object_unref(obj);
 420     }
 421
 422     entry = g_new0(CpuDefinitionInfoList, 1);
 423     entry->value = info;
 424     entry->next = *cpu_list;
 425     *cpu_list = entry;
 426 }
 427
 428 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
 429 {
 430     struct CpuDefinitionInfoListData list_data = {
 431         .list = NULL,
 432     };
 433
 434     list_data.model = get_max_cpu_model(errp);
 435     if (*errp) {
 436         error_free(*errp);
 437         *errp = NULL;
 438     }
 439
 440     object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
 441                          &list_data);
 442
 443     return list_data.list;
 444 }
 445
 446 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 447                                 Error **errp)
 448 {
 449     const QDict *qdict = NULL;
 450     const QDictEntry *e;
 451     Visitor *visitor;
 452     ObjectClass *oc;
 453     S390CPU *cpu;
 454     Object *obj;
 455
 456     if (info->props) {
 457         qdict = qobject_to(QDict, info->props);
 458         if (!qdict) {
 459             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 460             return;
 461         }
 462     }
 463
 464     oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
 465     if (!oc) {
 466         error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
 467         return;
 468     }
 469     if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
 470         error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
 471         return;
 472     }
 473     obj = object_new(object_class_get_name(oc));
 474     cpu = S390_CPU(obj);
 475
 476     if (!cpu->model) {
 477         error_setg(errp, "Details about the host CPU model are not available, "
 478                          "it cannot be used.");
 479         object_unref(obj);
 480         return;
 481     }
 482
 483     if (qdict) {
 484         visitor = qobject_input_visitor_new(info->props);
 485         visit_start_struct(visitor, NULL, NULL, 0, errp);
 486         if (*errp) {
 487             object_unref(obj);
 488             return;
 489         }
 490         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
 491             object_property_set(obj, visitor, e->key, errp);
 492             if (*errp) {
 493                 break;
 494             }
 495         }
 496         if (!*errp) {
 497             visit_check_struct(visitor, errp);
 498         }
 499         visit_end_struct(visitor, NULL);
 500         visit_free(visitor);
 501         if (*errp) {
 502             object_unref(obj);
 503             return;
 504         }
 505     }
 506
 507     /* copy the model and throw the cpu away */
 508     memcpy(model, cpu->model, sizeof(*model));
 509     object_unref(obj);
 510 }
 511
 512 static void qdict_add_disabled_feat(const char *name, void *opaque)
 513 {
 514     qdict_put_bool(opaque, name, false);
 515 }
 516
 517 static void qdict_add_enabled_feat(const char *name, void *opaque)
 518 {
 519     qdict_put_bool(opaque, name, true);
 520 }
 521
 522 /* convert S390CPUDef into a static CpuModelInfo */
 523 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
 524                                 bool delta_changes)
 525 {
 526     QDict *qdict = qdict_new();
 527     S390FeatBitmap bitmap;
 528
 529     /* always fallback to the static base model */
 530     info->name = g_strdup_printf("%s-base", model->def->name);
 531
 532     if (delta_changes) {
 533         /* features deleted from the base feature set */
 534         bitmap_andnot(bitmap, model->def->base_feat, model->features,
 535                       S390_FEAT_MAX);
 536         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 537             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 538         }
 539
 540         /* features added to the base feature set */
 541         bitmap_andnot(bitmap, model->features, model->def->base_feat,
 542                       S390_FEAT_MAX);
 543         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 544             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
 545         }
 546     } else {
 547         /* expand all features */
 548         s390_feat_bitmap_to_ascii(model->features, qdict,
 549                                   qdict_add_enabled_feat);
 550         bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
 551         s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 552     }
 553
 554     if (!qdict_size(qdict)) {
 555         qobject_unref(qdict);
 556     } else {
 557         info->props = QOBJECT(qdict);
 558         info->has_props = true;
 559     }
 560 }
 561
 562 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type,
 563                                                       CpuModelInfo *model,
 564                                                       Error **errp)
 565 {
 566     CpuModelExpansionInfo *expansion_info = NULL;
 567     S390CPUModel s390_model;
 568     bool delta_changes = false;
 569
 570     /* convert it to our internal representation */
 571     cpu_model_from_info(&s390_model, model, errp);
 572     if (*errp) {
 573         return NULL;
 574     }
 575
 576     if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
 577         delta_changes = true;
 578     } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 579         error_setg(errp, "The requested expansion type is not supported.");
 580         return NULL;
 581     }
 582
 583     /* convert it back to a static representation */
 584     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 585     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 586     cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
 587     return expansion_info;
 588 }
 589
 590 static void list_add_feat(const char *name, void *opaque)
 591 {
 592     strList **last = (strList **) opaque;
 593     strList *entry;
 594
 595     entry = g_new0(strList, 1);
 596     entry->value = g_strdup(name);
 597     entry->next = *last;
 598     *last = entry;
 599 }
 600
 601 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa,
 602                                                      CpuModelInfo *infob,
 603                                                      Error **errp)
 604 {
 605     CpuModelCompareResult feat_result, gen_result;
 606     CpuModelCompareInfo *compare_info;
 607     S390FeatBitmap missing, added;
 608     S390CPUModel modela, modelb;
 609
 610     /* convert both models to our internal representation */
 611     cpu_model_from_info(&modela, infoa, errp);
 612     if (*errp) {
 613         return NULL;
 614     }
 615     cpu_model_from_info(&modelb, infob, errp);
 616     if (*errp) {
 617         return NULL;
 618     }
 619     compare_info = g_new0(CpuModelCompareInfo, 1);
 620
 621     /* check the cpu generation and ga level */
 622     if (modela.def->gen == modelb.def->gen) {
 623         if (modela.def->ec_ga == modelb.def->ec_ga) {
 624             /* ec and corresponding bc are identical */
 625             gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 626         } else if (modela.def->ec_ga < modelb.def->ec_ga) {
 627             gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 628         } else {
 629             gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 630         }
 631     } else if (modela.def->gen < modelb.def->gen) {
 632         gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 633     } else {
 634         gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 635     }
 636     if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 637         /* both models cannot be made identical */
 638         list_add_feat("type", &compare_info->responsible_properties);
 639     }
 640
 641     /* check the feature set */
 642     if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
 643         feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 644     } else {
 645         bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
 646         s390_feat_bitmap_to_ascii(missing,
 647                                   &compare_info->responsible_properties,
 648                                   list_add_feat);
 649         bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
 650         s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
 651                                   list_add_feat);
 652         if (bitmap_empty(missing, S390_FEAT_MAX)) {
 653             feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 654         } else if (bitmap_empty(added, S390_FEAT_MAX)) {
 655             feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 656         } else {
 657             feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 658         }
 659     }
 660
 661     /* combine the results */
 662     if (gen_result == feat_result) {
 663         compare_info->result = gen_result;
 664     } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 665         compare_info->result = gen_result;
 666     } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 667         compare_info->result = feat_result;
 668     } else {
 669         compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 670     }
 671     return compare_info;
 672 }
 673
 674 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa,
 675                                                     CpuModelInfo *infob,
 676                                                     Error **errp)
 677 {
 678     CpuModelBaselineInfo *baseline_info;
 679     S390CPUModel modela, modelb, model;
 680     uint16_t cpu_type;
 681     uint8_t max_gen_ga;
 682     uint8_t max_gen;
 683
 684     /* convert both models to our internal representation */
 685     cpu_model_from_info(&modela, infoa, errp);
 686     if (*errp) {
 687         return NULL;
 688     }
 689
 690     cpu_model_from_info(&modelb, infob, errp);
 691     if (*errp) {
 692         return NULL;
 693     }
 694
 695     /* features both models support */
 696     bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
 697
 698     /* detect the maximum model not regarding features */
 699     if (modela.def->gen == modelb.def->gen) {
 700         if (modela.def->type == modelb.def->type) {
 701             cpu_type = modela.def->type;
 702         } else {
 703             cpu_type = 0;
 704         }
 705         max_gen = modela.def->gen;
 706         max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
 707     } else if (modela.def->gen > modelb.def->gen) {
 708         cpu_type = modelb.def->type;
 709         max_gen = modelb.def->gen;
 710         max_gen_ga = modelb.def->ec_ga;
 711     } else {
 712         cpu_type = modela.def->type;
 713         max_gen = modela.def->gen;
 714         max_gen_ga = modela.def->ec_ga;
 715     }
 716
 717     model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
 718                                   model.features);
 719     /* strip off features not part of the max model */
 720     bitmap_and(model.features, model.features, model.def->full_feat,
 721                S390_FEAT_MAX);
 722
 723     baseline_info = g_new0(CpuModelBaselineInfo, 1);
 724     baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
 725     cpu_info_from_model(baseline_info->model, &model, true);
 726     return baseline_info;
 727 }
 728 #endif
 729
 730 static void check_consistency(const S390CPUModel *model)
 731 {
 732     static int dep[][2] = {
 733         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 734         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 735         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 736         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 737         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 738         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 739         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 740         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 741         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 742         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 743         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 744         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 745         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 746         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 747         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 748         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 749         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 750         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 751         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 752         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 753         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 754         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 755         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 756         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 757         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 758         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 759         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 760         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 761         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 762         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 763         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 764         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 765         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 766         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 767         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 768         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 769         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 770         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 771         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 772         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 773         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 774     };
 775     int i;
 776
 777     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 778         if (test_bit(dep[i][0], model->features) &&
 779             !test_bit(dep[i][1], model->features)) {
 780             warn_report("\'%s\' requires \'%s\'.",
 781                         s390_feat_def(dep[i][0])->name,
 782                         s390_feat_def(dep[i][1])->name);
 783         }
 784     }
 785 }
 786
 787 static void error_prepend_missing_feat(const char *name, void *opaque)
 788 {
 789     error_prepend((Error **) opaque, "%s ", name);
 790 }
 791
 792 static void check_compatibility(const S390CPUModel *max_model,
 793                                 const S390CPUModel *model, Error **errp)
 794 {
 795     S390FeatBitmap missing;
 796
 797     if (model->def->gen > max_model->def->gen) {
 798         error_setg(errp, "Selected CPU generation is too new. Maximum "
 799                    "supported model in the configuration: \'%s\'",
 800                    max_model->def->name);
 801         return;
 802     } else if (model->def->gen == max_model->def->gen &&
 803                model->def->ec_ga > max_model->def->ec_ga) {
 804         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 805                    "supported model in the configuration: \'%s\'",
 806                    max_model->def->name);
 807         return;
 808     }
 809
 810     /* detect the missing features to properly report them */
 811     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 812     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 813         return;
 814     }
 815
 816     error_setg(errp, " ");
 817     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 818     error_prepend(errp, "Some features requested in the CPU model are not "
 819                   "available in the configuration: ");
 820 }
 821
 822 static S390CPUModel *get_max_cpu_model(Error **errp)
 823 {
 824     static S390CPUModel max_model;
 825     static bool cached;
 826
 827     if (cached) {
 828         return &max_model;
 829     }
 830
 831     if (kvm_enabled()) {
 832         kvm_s390_get_host_cpu_model(&max_model, errp);
 833     } else {
 834         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 835                                           QEMU_MAX_CPU_EC_GA, NULL);
 836         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 837    }
 838     if (!*errp) {
 839         cached = true;
 840         return &max_model;
 841     }
 842     return NULL;
 843 }
 844
 845 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
 846 {
 847 #ifndef CONFIG_USER_ONLY
 848     static S390CPUModel applied_model;
 849     static bool applied;
 850
 851     /*
 852      * We have the same model for all VCPUs. KVM can only be configured before
 853      * any VCPUs are defined in KVM.
 854      */
 855     if (applied) {
 856         if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
 857             error_setg(errp, "Mixed CPU models are not supported on s390x.");
 858         }
 859         return;
 860     }
 861
 862     if (kvm_enabled()) {
 863         kvm_s390_apply_cpu_model(model, errp);
 864     }
 865
 866     if (!*errp) {
 867         applied = true;
 868         if (model) {
 869             applied_model = *model;
 870         }
 871     }
 872 #endif
 873 }
 874
 875 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 876 {
 877     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 878     S390CPU *cpu = S390_CPU(cs);
 879     const S390CPUModel *max_model;
 880
 881     if (xcc->kvm_required && !kvm_enabled()) {
 882         error_setg(errp, "CPU definition requires KVM");
 883         return;
 884     }
 885
 886     if (!cpu->model) {
 887         /* no host model support -> perform compatibility stuff */
 888         apply_cpu_model(NULL, errp);
 889         return;
 890     }
 891
 892     max_model = get_max_cpu_model(errp);
 893     if (*errp) {
 894         error_prepend(errp, "CPU models are not available: ");
 895         return;
 896     }
 897
 898     /* copy over properties that can vary */
 899     cpu->model->lowest_ibc = max_model->lowest_ibc;
 900     cpu->model->cpu_id = max_model->cpu_id;
 901     cpu->model->cpu_id_format = max_model->cpu_id_format;
 902     cpu->model->cpu_ver = max_model->cpu_ver;
 903
 904     check_consistency(cpu->model);
 905     check_compatibility(max_model, cpu->model, errp);
 906     if (*errp) {
 907         return;
 908     }
 909
 910     apply_cpu_model(cpu->model, errp);
 911
 912 #if !defined(CONFIG_USER_ONLY)
 913     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 914     if (tcg_enabled()) {
 915         /* basic mode, write the cpu address into the first 4 bit of the ID */
 916         cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
 917     }
 918 #endif
 919 }
 920
 921 static void get_feature(Object *obj, Visitor *v, const char *name,
 922                         void *opaque, Error **errp)
 923 {
 924     S390Feat feat = (S390Feat) opaque;
 925     S390CPU *cpu = S390_CPU(obj);
 926     bool value;
 927
 928     if (!cpu->model) {
 929         error_setg(errp, "Details about the host CPU model are not available, "
 930                          "features cannot be queried.");
 931         return;
 932     }
 933
 934     value = test_bit(feat, cpu->model->features);
 935     visit_type_bool(v, name, &value, errp);
 936 }
 937
 938 static void set_feature(Object *obj, Visitor *v, const char *name,
 939                         void *opaque, Error **errp)
 940 {
 941     S390Feat feat = (S390Feat) opaque;
 942     DeviceState *dev = DEVICE(obj);
 943     S390CPU *cpu = S390_CPU(obj);
 944     bool value;
 945
 946     if (dev->realized) {
 947         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 948                    "it was realized", name, object_get_typename(obj));
 949         return;
 950     } else if (!cpu->model) {
 951         error_setg(errp, "Details about the host CPU model are not available, "
 952                          "features cannot be changed.");
 953         return;
 954     }
 955
 956     visit_type_bool(v, name, &value, errp);
 957     if (*errp) {
 958         return;
 959     }
 960     if (value) {
 961         if (!test_bit(feat, cpu->model->def->full_feat)) {
 962             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
 963                        " it was introduced with later models.",
 964                        name, cpu->model->def->name);
 965             return;
 966         }
 967         set_bit(feat, cpu->model->features);
 968     } else {
 969         clear_bit(feat, cpu->model->features);
 970     }
 971 }
 972
 973 static void get_feature_group(Object *obj, Visitor *v, const char *name,
 974                               void *opaque, Error **errp)
 975 {
 976     S390FeatGroup group = (S390FeatGroup) opaque;
 977     const S390FeatGroupDef *def = s390_feat_group_def(group);
 978     S390CPU *cpu = S390_CPU(obj);
 979     S390FeatBitmap tmp;
 980     bool value;
 981
 982     if (!cpu->model) {
 983         error_setg(errp, "Details about the host CPU model are not available, "
 984                          "features cannot be queried.");
 985         return;
 986     }
 987
 988     /* a group is enabled if all features are enabled */
 989     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
 990     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
 991     visit_type_bool(v, name, &value, errp);
 992 }
 993
 994 static void set_feature_group(Object *obj, Visitor *v, const char *name,
 995                               void *opaque, Error **errp)
 996 {
 997     S390FeatGroup group = (S390FeatGroup) opaque;
 998     const S390FeatGroupDef *def = s390_feat_group_def(group);
 999     DeviceState *dev = DEVICE(obj);
1000     S390CPU *cpu = S390_CPU(obj);
1001     bool value;
1002
1003     if (dev->realized) {
1004         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1005                    "it was realized", name, object_get_typename(obj));
1006         return;
1007     } else if (!cpu->model) {
1008         error_setg(errp, "Details about the host CPU model are not available, "
1009                          "features cannot be changed.");
1010         return;
1011     }
1012
1013     visit_type_bool(v, name, &value, errp);
1014     if (*errp) {
1015         return;
1016     }
1017     if (value) {
1018         /* groups are added in one shot, so an intersect is sufficient */
1019         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1020                                S390_FEAT_MAX)) {
1021             error_setg(errp, "Group '%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         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1027                   S390_FEAT_MAX);
1028     } else {
1029         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1030                       S390_FEAT_MAX);
1031     }
1032 }
1033
1034 void s390_cpu_model_register_props(Object *obj)
1035 {
1036     S390FeatGroup group;
1037     S390Feat feat;
1038
1039     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1040         const S390FeatDef *def = s390_feat_def(feat);
1041         object_property_add(obj, def->name, "bool", get_feature,
1042                             set_feature, NULL, (void *) feat, NULL);
1043         object_property_set_description(obj, def->name, def->desc , NULL);
1044     }
1045     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1046         const S390FeatGroupDef *def = s390_feat_group_def(group);
1047         object_property_add(obj, def->name, "bool", get_feature_group,
1048                             set_feature_group, NULL, (void *) group, NULL);
1049         object_property_set_description(obj, def->name, def->desc , NULL);
1050     }
1051 }
1052
1053 static void s390_cpu_model_initfn(Object *obj)
1054 {
1055     S390CPU *cpu = S390_CPU(obj);
1056     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1057
1058     cpu->model = g_malloc0(sizeof(*cpu->model));
1059     /* copy the model, so we can modify it */
1060     cpu->model->def = xcc->cpu_def;
1061     if (xcc->is_static) {
1062         /* base model - features will never change */
1063         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1064                     S390_FEAT_MAX);
1065     } else {
1066         /* latest model - features can change */
1067         bitmap_copy(cpu->model->features,
1068                     cpu->model->def->default_feat, S390_FEAT_MAX);
1069     }
1070 }
1071
1072 #ifdef CONFIG_KVM
1073 static void s390_host_cpu_model_initfn(Object *obj)
1074 {
1075     S390CPU *cpu = S390_CPU(obj);
1076     Error *err = NULL;
1077
1078     if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1079         return;
1080     }
1081
1082     cpu->model = g_malloc0(sizeof(*cpu->model));
1083     kvm_s390_get_host_cpu_model(cpu->model, &err);
1084     if (err) {
1085         error_report_err(err);
1086         g_free(cpu->model);
1087         /* fallback to unsupported cpu models */
1088         cpu->model = NULL;
1089     }
1090 }
1091 #endif
1092
1093 static S390CPUDef s390_qemu_cpu_def;
1094 static S390CPUModel s390_qemu_cpu_model;
1095
1096 /* Set the qemu CPU model (on machine initialization). Must not be called
1097  * once CPUs have been created.
1098  */
1099 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
1100                              const S390FeatInit feat_init)
1101 {
1102     const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
1103
1104     g_assert(def);
1105     g_assert(QTAILQ_EMPTY(&cpus));
1106
1107     /* TCG emulates some features that can usually not be enabled with
1108      * the emulated machine generation. Make sure they can be enabled
1109      * when using the QEMU model by adding them to full_feat. We have
1110      * to copy the definition to do that.
1111      */
1112     memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def));
1113     bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat,
1114               qemu_max_cpu_feat, S390_FEAT_MAX);
1115
1116     /* build the CPU model */
1117     s390_qemu_cpu_model.def = &s390_qemu_cpu_def;
1118     bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
1119     s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
1120 }
1121
1122 static void s390_qemu_cpu_model_initfn(Object *obj)
1123 {
1124     S390CPU *cpu = S390_CPU(obj);
1125
1126     cpu->model = g_malloc0(sizeof(*cpu->model));
1127     /* copy the CPU model so we can modify it */
1128     memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
1129 }
1130
1131 static void s390_cpu_model_finalize(Object *obj)
1132 {
1133     S390CPU *cpu = S390_CPU(obj);
1134
1135     g_free(cpu->model);
1136     cpu->model = NULL;
1137 }
1138
1139 static bool get_is_migration_safe(Object *obj, Error **errp)
1140 {
1141     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1142 }
1143
1144 static bool get_is_static(Object *obj, Error **errp)
1145 {
1146     return S390_CPU_GET_CLASS(obj)->is_static;
1147 }
1148
1149 static char *get_description(Object *obj, Error **errp)
1150 {
1151     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1152 }
1153
1154 void s390_cpu_model_class_register_props(ObjectClass *oc)
1155 {
1156     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1157                                    NULL, NULL);
1158     object_class_property_add_bool(oc, "static", get_is_static,
1159                                    NULL, NULL);
1160     object_class_property_add_str(oc, "description", get_description, NULL,
1161                                   NULL);
1162 }
1163
1164 #ifdef CONFIG_KVM
1165 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1166 {
1167     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1168
1169     xcc->kvm_required = true;
1170     xcc->desc = "KVM only: All recognized features";
1171 }
1172 #endif
1173
1174 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1175 {
1176     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1177
1178     /* all base models are migration safe */
1179     xcc->cpu_def = (const S390CPUDef *) data;
1180     xcc->is_migration_safe = true;
1181     xcc->is_static = true;
1182     xcc->desc = xcc->cpu_def->desc;
1183 }
1184
1185 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1186 {
1187     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1188
1189     /* model that can change between QEMU versions */
1190     xcc->cpu_def = (const S390CPUDef *) data;
1191     xcc->is_migration_safe = true;
1192     xcc->desc = xcc->cpu_def->desc;
1193 }
1194
1195 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1196 {
1197     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1198
1199     xcc->is_migration_safe = true;
1200     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1201                                 qemu_hw_version());
1202 }
1203
1204 /* Generate type name for a cpu model. Caller has to free the string. */
1205 static char *s390_cpu_type_name(const char *model_name)
1206 {
1207     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1208 }
1209
1210 /* Generate type name for a base cpu model. Caller has to free the string. */
1211 static char *s390_base_cpu_type_name(const char *model_name)
1212 {
1213     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1214 }
1215
1216 ObjectClass *s390_cpu_class_by_name(const char *name)
1217 {
1218     char *typename = s390_cpu_type_name(name);
1219     ObjectClass *oc;
1220
1221     oc = object_class_by_name(typename);
1222     g_free(typename);
1223     return oc;
1224 }
1225
1226 static const TypeInfo qemu_s390_cpu_type_info = {
1227     .name = S390_CPU_TYPE_NAME("qemu"),
1228     .parent = TYPE_S390_CPU,
1229     .instance_init = s390_qemu_cpu_model_initfn,
1230     .instance_finalize = s390_cpu_model_finalize,
1231     .class_init = s390_qemu_cpu_model_class_init,
1232 };
1233
1234 #ifdef CONFIG_KVM
1235 static const TypeInfo host_s390_cpu_type_info = {
1236     .name = S390_CPU_TYPE_NAME("host"),
1237     .parent = TYPE_S390_CPU,
1238     .instance_init = s390_host_cpu_model_initfn,
1239     .instance_finalize = s390_cpu_model_finalize,
1240     .class_init = s390_host_cpu_model_class_init,
1241 };
1242 #endif
1243
1244 static void init_ignored_base_feat(void)
1245 {
1246     static const int feats[] = {
1247          /* MSA subfunctions that could not be available on certain machines */
1248          S390_FEAT_KMAC_DEA,
1249          S390_FEAT_KMAC_TDEA_128,
1250          S390_FEAT_KMAC_TDEA_192,
1251          S390_FEAT_KMC_DEA,
1252          S390_FEAT_KMC_TDEA_128,
1253          S390_FEAT_KMC_TDEA_192,
1254          S390_FEAT_KM_DEA,
1255          S390_FEAT_KM_TDEA_128,
1256          S390_FEAT_KM_TDEA_192,
1257          S390_FEAT_KIMD_SHA_1,
1258          S390_FEAT_KLMD_SHA_1,
1259     };
1260     int i;
1261
1262     for (i = 0; i < ARRAY_SIZE(feats); i++) {
1263         set_bit(feats[i], ignored_base_feat);
1264     }
1265 }
1266
1267 static void register_types(void)
1268 {
1269     static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST };
1270     int i;
1271
1272     init_ignored_base_feat();
1273
1274     /* init all bitmaps from gnerated data initially */
1275     s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
1276 #ifndef CONFIG_USER_ONLY
1277     if (!pci_available) {
1278         clear_bit(S390_FEAT_ZPCI, qemu_max_cpu_feat);
1279     }
1280 #endif
1281     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1282         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1283                               s390_cpu_defs[i].base_feat);
1284         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1285                               s390_cpu_defs[i].default_feat);
1286         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1287                               s390_cpu_defs[i].full_feat);
1288     }
1289
1290     /* initialize the qemu model with latest definition */
1291     s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
1292                             QEMU_MAX_CPU_EC_GA, qemu_latest_init);
1293
1294     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1295         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1296         TypeInfo ti_base = {
1297             .name = base_name,
1298             .parent = TYPE_S390_CPU,
1299             .instance_init = s390_cpu_model_initfn,
1300             .instance_finalize = s390_cpu_model_finalize,
1301             .class_init = s390_base_cpu_model_class_init,
1302             .class_data = (void *) &s390_cpu_defs[i],
1303         };
1304         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1305         TypeInfo ti = {
1306             .name = name,
1307             .parent = TYPE_S390_CPU,
1308             .instance_init = s390_cpu_model_initfn,
1309             .instance_finalize = s390_cpu_model_finalize,
1310             .class_init = s390_cpu_model_class_init,
1311             .class_data = (void *) &s390_cpu_defs[i],
1312         };
1313
1314         type_register_static(&ti_base);
1315         type_register_static(&ti);
1316         g_free(base_name);
1317         g_free(name);
1318     }
1319
1320     type_register_static(&qemu_s390_cpu_type_info);
1321 #ifdef CONFIG_KVM
1322     type_register_static(&host_s390_cpu_type_info);
1323 #endif
1324 }
1325
1326 type_init(register_types)