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