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