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 definition list in order of release. Up to generation 14 base features
  47  * of a following release have been a superset of the previous release. With
  48  * generation 15 one base feature and one optional feature have been deprecated.
  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     CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM 8561 GA1"),
  86     CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"),
  87 };
  88
  89 #define QEMU_MAX_CPU_TYPE 0x2827
  90 #define QEMU_MAX_CPU_GEN 12
  91 #define QEMU_MAX_CPU_EC_GA 2
  92 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
  93 static S390FeatBitmap qemu_max_cpu_feat;
  94
  95 /* features part of a base model but not relevant for finding a base model */
  96 S390FeatBitmap ignored_base_feat;
  97
  98 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  99 {
 100     const S390CPUDef *def;
 101
 102     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
 103     clear_bit(feat, (unsigned long *)&def->default_feat);
 104 }
 105
 106 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 107 {
 108     int i;
 109
 110     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 111         const S390CPUDef *def = &s390_cpu_defs[i];
 112
 113         if (def->gen < gen) {
 114             continue;
 115         }
 116         if (def->gen == gen && def->ec_ga < ec_ga) {
 117             continue;
 118         }
 119
 120         clear_bit(feat, (unsigned long *)&def->default_feat);
 121     }
 122 }
 123
 124 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
 125                                        S390FeatGroup group)
 126 {
 127     const S390FeatGroupDef *group_def = s390_feat_group_def(group);
 128     S390FeatBitmap group_def_off;
 129     int i;
 130
 131     bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
 132
 133     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 134         const S390CPUDef *cpu_def = &s390_cpu_defs[i];
 135
 136         if (cpu_def->gen < gen) {
 137             continue;
 138         }
 139         if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
 140             continue;
 141         }
 142
 143         bitmap_and((unsigned long *)&cpu_def->default_feat,
 144                    cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
 145     }
 146 }
 147
 148 uint32_t s390_get_hmfai(void)
 149 {
 150     static S390CPU *cpu;
 151
 152     if (!cpu) {
 153         cpu = S390_CPU(qemu_get_cpu(0));
 154     }
 155
 156     if (!cpu || !cpu->model) {
 157         return 0;
 158     }
 159     return cpu->model->def->hmfai;
 160 }
 161
 162 uint8_t s390_get_mha_pow(void)
 163 {
 164     static S390CPU *cpu;
 165
 166     if (!cpu) {
 167         cpu = S390_CPU(qemu_get_cpu(0));
 168     }
 169
 170     if (!cpu || !cpu->model) {
 171         return 0;
 172     }
 173     return cpu->model->def->mha_pow;
 174 }
 175
 176 uint32_t s390_get_ibc_val(void)
 177 {
 178     uint16_t unblocked_ibc, lowest_ibc;
 179     static S390CPU *cpu;
 180
 181     if (!cpu) {
 182         cpu = S390_CPU(qemu_get_cpu(0));
 183     }
 184
 185     if (!cpu || !cpu->model) {
 186         return 0;
 187     }
 188     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 189     lowest_ibc = cpu->model->lowest_ibc;
 190     /* the lowest_ibc always has to be <= unblocked_ibc */
 191     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 192         return 0;
 193     }
 194     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 195 }
 196
 197 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 198 {
 199     static S390CPU *cpu;
 200
 201     if (!cpu) {
 202         cpu = S390_CPU(qemu_get_cpu(0));
 203     }
 204
 205     if (!cpu || !cpu->model) {
 206         return;
 207     }
 208     s390_fill_feat_block(cpu->model->features, type, data);
 209 }
 210
 211 bool s390_has_feat(S390Feat feat)
 212 {
 213     static S390CPU *cpu;
 214
 215     if (!cpu) {
 216         cpu = S390_CPU(qemu_get_cpu(0));
 217     }
 218
 219     if (!cpu || !cpu->model) {
 220 #ifdef CONFIG_KVM
 221         if (kvm_enabled()) {
 222             if (feat == S390_FEAT_VECTOR) {
 223                 return kvm_check_extension(kvm_state,
 224                                            KVM_CAP_S390_VECTOR_REGISTERS);
 225             }
 226             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 227                 return kvm_s390_get_ri();
 228             }
 229             if (feat == S390_FEAT_MSA_EXT_3) {
 230                 return true;
 231             }
 232         }
 233 #endif
 234         if (feat == S390_FEAT_ZPCI) {
 235             return true;
 236         }
 237         return 0;
 238     }
 239     return test_bit(feat, cpu->model->features);
 240 }
 241
 242 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 243 {
 244     int i;
 245
 246     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 247         if (s390_cpu_defs[i].type == type) {
 248             return s390_cpu_defs[i].gen;
 249         }
 250     }
 251     return 0;
 252 }
 253
 254 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 255                                     S390FeatBitmap features)
 256 {
 257     const S390CPUDef *last_compatible = NULL;
 258     const S390CPUDef *matching_cpu_type = NULL;
 259     int i;
 260
 261     if (!gen) {
 262         ec_ga = 0;
 263     }
 264     if (!gen && type) {
 265         gen = s390_get_gen_for_cpu_type(type);
 266     }
 267
 268     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 269         const S390CPUDef *def = &s390_cpu_defs[i];
 270         S390FeatBitmap missing;
 271
 272         /* don't even try newer generations if we know the generation */
 273         if (gen) {
 274             if (def->gen > gen) {
 275                 break;
 276             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 277                 break;
 278             }
 279         }
 280
 281         if (features) {
 282             /* see if the model satisfies the minimum features */
 283             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 284             /*
 285              * Ignore certain features that are in the base model, but not
 286              * relevant for the search (esp. MSA subfunctions).
 287              */
 288             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 289             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 290                 break;
 291             }
 292         }
 293
 294         /* stop the search if we found the exact model */
 295         if (def->type == type && def->ec_ga == ec_ga) {
 296             return def;
 297         }
 298         /* remember if we've at least seen one with the same cpu type */
 299         if (def->type == type) {
 300             matching_cpu_type = def;
 301         }
 302         last_compatible = def;
 303     }
 304     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 305     if (matching_cpu_type) {
 306         return matching_cpu_type;
 307     }
 308     return last_compatible;
 309 }
 310
 311 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 312 {
 313     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 314     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 315     const char *details = "";
 316
 317     if (scc->is_static) {
 318         details = "(static, migration-safe)";
 319     } else if (scc->is_migration_safe) {
 320         details = "(migration-safe)";
 321     }
 322
 323     /* strip off the -s390x-cpu */
 324     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 325     qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, 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(void)
 364 {
 365     S390FeatGroup group;
 366     S390Feat feat;
 367     GSList *list;
 368
 369     list = object_class_get_list(TYPE_S390_CPU, false);
 370     list = g_slist_sort(list, s390_cpu_list_compare);
 371     g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
 372     g_slist_free(list);
 373
 374     qemu_printf("\nRecognized feature flags:\n");
 375     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 376         const S390FeatDef *def = s390_feat_def(feat);
 377
 378         qemu_printf("%-20s %-50s\n", def->name, def->desc);
 379     }
 380
 381     qemu_printf("\nRecognized feature groups:\n");
 382     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 383         const S390FeatGroupDef *def = s390_feat_group_def(group);
 384
 385         qemu_printf("%-20s %-50s\n", def->name, def->desc);
 386     }
 387 }
 388
 389 static S390CPUModel *get_max_cpu_model(Error **errp);
 390
 391 #ifndef CONFIG_USER_ONLY
 392 static void list_add_feat(const char *name, void *opaque);
 393
 394 static void check_unavailable_features(const S390CPUModel *max_model,
 395                                        const S390CPUModel *model,
 396                                        strList **unavailable)
 397 {
 398     S390FeatBitmap missing;
 399
 400     /* check general model compatibility */
 401     if (max_model->def->gen < model->def->gen ||
 402         (max_model->def->gen == model->def->gen &&
 403          max_model->def->ec_ga < model->def->ec_ga)) {
 404         list_add_feat("type", unavailable);
 405     }
 406
 407     /* detect missing features if any to properly report them */
 408     bitmap_andnot(missing, model->features, max_model->features,
 409                   S390_FEAT_MAX);
 410     if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 411         s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
 412     }
 413 }
 414
 415 struct CpuDefinitionInfoListData {
 416     CpuDefinitionInfoList *list;
 417     S390CPUModel *model;
 418 };
 419
 420 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
 421 {
 422     struct CpuDefinitionInfoListData *cpu_list_data = opaque;
 423     CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
 424     CpuDefinitionInfoList *entry;
 425     CpuDefinitionInfo *info;
 426     char *name = g_strdup(object_class_get_name(klass));
 427     S390CPUClass *scc = S390_CPU_CLASS(klass);
 428
 429     /* strip off the -s390x-cpu */
 430     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 431     info = g_new0(CpuDefinitionInfo, 1);
 432     info->name = name;
 433     info->has_migration_safe = true;
 434     info->migration_safe = scc->is_migration_safe;
 435     info->q_static = scc->is_static;
 436     info->q_typename = g_strdup(object_class_get_name(klass));
 437     /* check for unavailable features */
 438     if (cpu_list_data->model) {
 439         Object *obj;
 440         S390CPU *sc;
 441         obj = object_new(object_class_get_name(klass));
 442         sc = S390_CPU(obj);
 443         if (sc->model) {
 444             info->has_unavailable_features = true;
 445             check_unavailable_features(cpu_list_data->model, sc->model,
 446                                        &info->unavailable_features);
 447         }
 448         object_unref(obj);
 449     }
 450
 451     entry = g_new0(CpuDefinitionInfoList, 1);
 452     entry->value = info;
 453     entry->next = *cpu_list;
 454     *cpu_list = entry;
 455 }
 456
 457 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 458 {
 459     struct CpuDefinitionInfoListData list_data = {
 460         .list = NULL,
 461     };
 462
 463     list_data.model = get_max_cpu_model(errp);
 464     if (*errp) {
 465         error_free(*errp);
 466         *errp = NULL;
 467     }
 468
 469     object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
 470                          &list_data);
 471
 472     return list_data.list;
 473 }
 474
 475 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 476                                 Error **errp)
 477 {
 478     const QDict *qdict = NULL;
 479     const QDictEntry *e;
 480     Visitor *visitor;
 481     ObjectClass *oc;
 482     S390CPU *cpu;
 483     Object *obj;
 484
 485     if (info->props) {
 486         qdict = qobject_to(QDict, info->props);
 487         if (!qdict) {
 488             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 489             return;
 490         }
 491     }
 492
 493     oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
 494     if (!oc) {
 495         error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
 496         return;
 497     }
 498     if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
 499         error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
 500         return;
 501     }
 502     obj = object_new(object_class_get_name(oc));
 503     cpu = S390_CPU(obj);
 504
 505     if (!cpu->model) {
 506         error_setg(errp, "Details about the host CPU model are not available, "
 507                          "it cannot be used.");
 508         object_unref(obj);
 509         return;
 510     }
 511
 512     if (qdict) {
 513         visitor = qobject_input_visitor_new(info->props);
 514         visit_start_struct(visitor, NULL, NULL, 0, errp);
 515         if (*errp) {
 516             object_unref(obj);
 517             return;
 518         }
 519         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
 520             object_property_set(obj, visitor, e->key, errp);
 521             if (*errp) {
 522                 break;
 523             }
 524         }
 525         if (!*errp) {
 526             visit_check_struct(visitor, errp);
 527         }
 528         visit_end_struct(visitor, NULL);
 529         visit_free(visitor);
 530         if (*errp) {
 531             object_unref(obj);
 532             return;
 533         }
 534     }
 535
 536     /* copy the model and throw the cpu away */
 537     memcpy(model, cpu->model, sizeof(*model));
 538     object_unref(obj);
 539 }
 540
 541 static void qdict_add_disabled_feat(const char *name, void *opaque)
 542 {
 543     qdict_put_bool(opaque, name, false);
 544 }
 545
 546 static void qdict_add_enabled_feat(const char *name, void *opaque)
 547 {
 548     qdict_put_bool(opaque, name, true);
 549 }
 550
 551 /* convert S390CPUDef into a static CpuModelInfo */
 552 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
 553                                 bool delta_changes)
 554 {
 555     QDict *qdict = qdict_new();
 556     S390FeatBitmap bitmap;
 557
 558     /* always fallback to the static base model */
 559     info->name = g_strdup_printf("%s-base", model->def->name);
 560
 561     if (delta_changes) {
 562         /* features deleted from the base feature set */
 563         bitmap_andnot(bitmap, model->def->base_feat, model->features,
 564                       S390_FEAT_MAX);
 565         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 566             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 567         }
 568
 569         /* features added to the base feature set */
 570         bitmap_andnot(bitmap, model->features, model->def->base_feat,
 571                       S390_FEAT_MAX);
 572         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 573             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
 574         }
 575     } else {
 576         /* expand all features */
 577         s390_feat_bitmap_to_ascii(model->features, qdict,
 578                                   qdict_add_enabled_feat);
 579         bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
 580         s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 581     }
 582
 583     if (!qdict_size(qdict)) {
 584         qobject_unref(qdict);
 585     } else {
 586         info->props = QOBJECT(qdict);
 587         info->has_props = true;
 588     }
 589 }
 590
 591 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 592                                                       CpuModelInfo *model,
 593                                                       Error **errp)
 594 {
 595     CpuModelExpansionInfo *expansion_info = NULL;
 596     S390CPUModel s390_model;
 597     bool delta_changes = false;
 598
 599     /* convert it to our internal representation */
 600     cpu_model_from_info(&s390_model, model, errp);
 601     if (*errp) {
 602         return NULL;
 603     }
 604
 605     if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
 606         delta_changes = true;
 607     } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 608         error_setg(errp, "The requested expansion type is not supported.");
 609         return NULL;
 610     }
 611
 612     /* convert it back to a static representation */
 613     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 614     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 615     cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
 616     return expansion_info;
 617 }
 618
 619 static void list_add_feat(const char *name, void *opaque)
 620 {
 621     strList **last = (strList **) opaque;
 622     strList *entry;
 623
 624     entry = g_new0(strList, 1);
 625     entry->value = g_strdup(name);
 626     entry->next = *last;
 627     *last = entry;
 628 }
 629
 630 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa,
 631                                                      CpuModelInfo *infob,
 632                                                      Error **errp)
 633 {
 634     CpuModelCompareResult feat_result, gen_result;
 635     CpuModelCompareInfo *compare_info;
 636     S390FeatBitmap missing, added;
 637     S390CPUModel modela, modelb;
 638
 639     /* convert both models to our internal representation */
 640     cpu_model_from_info(&modela, infoa, errp);
 641     if (*errp) {
 642         return NULL;
 643     }
 644     cpu_model_from_info(&modelb, infob, errp);
 645     if (*errp) {
 646         return NULL;
 647     }
 648     compare_info = g_new0(CpuModelCompareInfo, 1);
 649
 650     /* check the cpu generation and ga level */
 651     if (modela.def->gen == modelb.def->gen) {
 652         if (modela.def->ec_ga == modelb.def->ec_ga) {
 653             /* ec and corresponding bc are identical */
 654             gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 655         } else if (modela.def->ec_ga < modelb.def->ec_ga) {
 656             gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 657         } else {
 658             gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 659         }
 660     } else if (modela.def->gen < modelb.def->gen) {
 661         gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 662     } else {
 663         gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 664     }
 665     if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 666         /* both models cannot be made identical */
 667         list_add_feat("type", &compare_info->responsible_properties);
 668     }
 669
 670     /* check the feature set */
 671     if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
 672         feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 673     } else {
 674         bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
 675         s390_feat_bitmap_to_ascii(missing,
 676                                   &compare_info->responsible_properties,
 677                                   list_add_feat);
 678         bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
 679         s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
 680                                   list_add_feat);
 681         if (bitmap_empty(missing, S390_FEAT_MAX)) {
 682             feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 683         } else if (bitmap_empty(added, S390_FEAT_MAX)) {
 684             feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 685         } else {
 686             feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 687         }
 688     }
 689
 690     /* combine the results */
 691     if (gen_result == feat_result) {
 692         compare_info->result = gen_result;
 693     } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 694         compare_info->result = gen_result;
 695     } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 696         compare_info->result = feat_result;
 697     } else {
 698         compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 699     }
 700     return compare_info;
 701 }
 702
 703 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa,
 704                                                     CpuModelInfo *infob,
 705                                                     Error **errp)
 706 {
 707     CpuModelBaselineInfo *baseline_info;
 708     S390CPUModel modela, modelb, model;
 709     uint16_t cpu_type;
 710     uint8_t max_gen_ga;
 711     uint8_t max_gen;
 712
 713     /* convert both models to our internal representation */
 714     cpu_model_from_info(&modela, infoa, errp);
 715     if (*errp) {
 716         return NULL;
 717     }
 718
 719     cpu_model_from_info(&modelb, infob, errp);
 720     if (*errp) {
 721         return NULL;
 722     }
 723
 724     /* features both models support */
 725     bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
 726
 727     /* detect the maximum model not regarding features */
 728     if (modela.def->gen == modelb.def->gen) {
 729         if (modela.def->type == modelb.def->type) {
 730             cpu_type = modela.def->type;
 731         } else {
 732             cpu_type = 0;
 733         }
 734         max_gen = modela.def->gen;
 735         max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
 736     } else if (modela.def->gen > modelb.def->gen) {
 737         cpu_type = modelb.def->type;
 738         max_gen = modelb.def->gen;
 739         max_gen_ga = modelb.def->ec_ga;
 740     } else {
 741         cpu_type = modela.def->type;
 742         max_gen = modela.def->gen;
 743         max_gen_ga = modela.def->ec_ga;
 744     }
 745
 746     model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
 747                                   model.features);
 748
 749     /* models without early base features (esan3) are bad */
 750     if (!model.def) {
 751         error_setg(errp, "No compatible CPU model could be created as"
 752                    " important base features are disabled");
 753         return NULL;
 754     }
 755
 756     /* strip off features not part of the max model */
 757     bitmap_and(model.features, model.features, model.def->full_feat,
 758                S390_FEAT_MAX);
 759
 760     baseline_info = g_new0(CpuModelBaselineInfo, 1);
 761     baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
 762     cpu_info_from_model(baseline_info->model, &model, true);
 763     return baseline_info;
 764 }
 765 #endif
 766
 767 static void check_consistency(const S390CPUModel *model)
 768 {
 769     static int dep[][2] = {
 770         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 771         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 772         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 773         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 774         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 775         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 776         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 777         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 778         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 779         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 780         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 781         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 782         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 783         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 784         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 785         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 786         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
 787         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
 788         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 789         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 790         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 791         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 792         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 793         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 794         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 795         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 796         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 797         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 798         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 799         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 800         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 801         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 802         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 803         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 804         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 805         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 806         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 807         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 808         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 809         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 810         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 811         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 812         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 813         { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
 814         { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
 815         { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
 816         { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
 817         { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
 818         { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
 819     };
 820     int i;
 821
 822     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 823         if (test_bit(dep[i][0], model->features) &&
 824             !test_bit(dep[i][1], model->features)) {
 825             warn_report("\'%s\' requires \'%s\'.",
 826                         s390_feat_def(dep[i][0])->name,
 827                         s390_feat_def(dep[i][1])->name);
 828         }
 829     }
 830 }
 831
 832 static void error_prepend_missing_feat(const char *name, void *opaque)
 833 {
 834     error_prepend((Error **) opaque, "%s ", name);
 835 }
 836
 837 static void check_compatibility(const S390CPUModel *max_model,
 838                                 const S390CPUModel *model, Error **errp)
 839 {
 840     S390FeatBitmap missing;
 841
 842     if (model->def->gen > max_model->def->gen) {
 843         error_setg(errp, "Selected CPU generation is too new. Maximum "
 844                    "supported model in the configuration: \'%s\'",
 845                    max_model->def->name);
 846         return;
 847     } else if (model->def->gen == max_model->def->gen &&
 848                model->def->ec_ga > max_model->def->ec_ga) {
 849         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 850                    "supported model in the configuration: \'%s\'",
 851                    max_model->def->name);
 852         return;
 853     }
 854
 855     /* detect the missing features to properly report them */
 856     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 857     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 858         return;
 859     }
 860
 861     error_setg(errp, " ");
 862     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 863     error_prepend(errp, "Some features requested in the CPU model are not "
 864                   "available in the configuration: ");
 865 }
 866
 867 static S390CPUModel *get_max_cpu_model(Error **errp)
 868 {
 869     static S390CPUModel max_model;
 870     static bool cached;
 871
 872     if (cached) {
 873         return &max_model;
 874     }
 875
 876     if (kvm_enabled()) {
 877         kvm_s390_get_host_cpu_model(&max_model, errp);
 878     } else {
 879         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 880                                           QEMU_MAX_CPU_EC_GA, NULL);
 881         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 882    }
 883     if (!*errp) {
 884         cached = true;
 885         return &max_model;
 886     }
 887     return NULL;
 888 }
 889
 890 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
 891 {
 892 #ifndef CONFIG_USER_ONLY
 893     static S390CPUModel applied_model;
 894     static bool applied;
 895
 896     /*
 897      * We have the same model for all VCPUs. KVM can only be configured before
 898      * any VCPUs are defined in KVM.
 899      */
 900     if (applied) {
 901         if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
 902             error_setg(errp, "Mixed CPU models are not supported on s390x.");
 903         }
 904         return;
 905     }
 906
 907     if (kvm_enabled()) {
 908         kvm_s390_apply_cpu_model(model, errp);
 909     }
 910
 911     if (!*errp) {
 912         applied = true;
 913         if (model) {
 914             applied_model = *model;
 915         }
 916     }
 917 #endif
 918 }
 919
 920 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 921 {
 922     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 923     S390CPU *cpu = S390_CPU(cs);
 924     const S390CPUModel *max_model;
 925
 926     if (xcc->kvm_required && !kvm_enabled()) {
 927         error_setg(errp, "CPU definition requires KVM");
 928         return;
 929     }
 930
 931     if (!cpu->model) {
 932         /* no host model support -> perform compatibility stuff */
 933         apply_cpu_model(NULL, errp);
 934         return;
 935     }
 936
 937     max_model = get_max_cpu_model(errp);
 938     if (*errp) {
 939         error_prepend(errp, "CPU models are not available: ");
 940         return;
 941     }
 942
 943     /* copy over properties that can vary */
 944     cpu->model->lowest_ibc = max_model->lowest_ibc;
 945     cpu->model->cpu_id = max_model->cpu_id;
 946     cpu->model->cpu_id_format = max_model->cpu_id_format;
 947     cpu->model->cpu_ver = max_model->cpu_ver;
 948
 949     check_consistency(cpu->model);
 950     check_compatibility(max_model, cpu->model, errp);
 951     if (*errp) {
 952         return;
 953     }
 954
 955     apply_cpu_model(cpu->model, errp);
 956
 957 #if !defined(CONFIG_USER_ONLY)
 958     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 959     if (tcg_enabled()) {
 960         /* basic mode, write the cpu address into the first 4 bit of the ID */
 961         cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
 962     }
 963 #endif
 964 }
 965
 966 static void get_feature(Object *obj, Visitor *v, const char *name,
 967                         void *opaque, Error **errp)
 968 {
 969     S390Feat feat = (S390Feat) opaque;
 970     S390CPU *cpu = S390_CPU(obj);
 971     bool value;
 972
 973     if (!cpu->model) {
 974         error_setg(errp, "Details about the host CPU model are not available, "
 975                          "features cannot be queried.");
 976         return;
 977     }
 978
 979     value = test_bit(feat, cpu->model->features);
 980     visit_type_bool(v, name, &value, errp);
 981 }
 982
 983 static void set_feature(Object *obj, Visitor *v, const char *name,
 984                         void *opaque, Error **errp)
 985 {
 986     S390Feat feat = (S390Feat) opaque;
 987     DeviceState *dev = DEVICE(obj);
 988     S390CPU *cpu = S390_CPU(obj);
 989     bool value;
 990
 991     if (dev->realized) {
 992         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 993                    "it was realized", name, object_get_typename(obj));
 994         return;
 995     } else if (!cpu->model) {
 996         error_setg(errp, "Details about the host CPU model are not available, "
 997                          "features cannot be changed.");
 998         return;
 999     }
1000
1001     visit_type_bool(v, name, &value, errp);
1002     if (*errp) {
1003         return;
1004     }
1005     if (value) {
1006         if (!test_bit(feat, cpu->model->def->full_feat)) {
1007             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1008                        " it was introduced with later models.",
1009                        name, cpu->model->def->name);
1010             return;
1011         }
1012         set_bit(feat, cpu->model->features);
1013     } else {
1014         clear_bit(feat, cpu->model->features);
1015     }
1016 }
1017
1018 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1019                               void *opaque, Error **errp)
1020 {
1021     S390FeatGroup group = (S390FeatGroup) opaque;
1022     const S390FeatGroupDef *def = s390_feat_group_def(group);
1023     S390CPU *cpu = S390_CPU(obj);
1024     S390FeatBitmap tmp;
1025     bool value;
1026
1027     if (!cpu->model) {
1028         error_setg(errp, "Details about the host CPU model are not available, "
1029                          "features cannot be queried.");
1030         return;
1031     }
1032
1033     /* a group is enabled if all features are enabled */
1034     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1035     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1036     visit_type_bool(v, name, &value, errp);
1037 }
1038
1039 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1040                               void *opaque, Error **errp)
1041 {
1042     S390FeatGroup group = (S390FeatGroup) opaque;
1043     const S390FeatGroupDef *def = s390_feat_group_def(group);
1044     DeviceState *dev = DEVICE(obj);
1045     S390CPU *cpu = S390_CPU(obj);
1046     bool value;
1047
1048     if (dev->realized) {
1049         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1050                    "it was realized", name, object_get_typename(obj));
1051         return;
1052     } else if (!cpu->model) {
1053         error_setg(errp, "Details about the host CPU model are not available, "
1054                          "features cannot be changed.");
1055         return;
1056     }
1057
1058     visit_type_bool(v, name, &value, errp);
1059     if (*errp) {
1060         return;
1061     }
1062     if (value) {
1063         /* groups are added in one shot, so an intersect is sufficient */
1064         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1065                                S390_FEAT_MAX)) {
1066             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1067                        " it was introduced with later models.",
1068                        name, cpu->model->def->name);
1069             return;
1070         }
1071         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1072                   S390_FEAT_MAX);
1073     } else {
1074         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1075                       S390_FEAT_MAX);
1076     }
1077 }
1078
1079 void s390_cpu_model_register_props(Object *obj)
1080 {
1081     S390FeatGroup group;
1082     S390Feat feat;
1083
1084     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1085         const S390FeatDef *def = s390_feat_def(feat);
1086         object_property_add(obj, def->name, "bool", get_feature,
1087                             set_feature, NULL, (void *) feat, NULL);
1088         object_property_set_description(obj, def->name, def->desc , NULL);
1089     }
1090     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1091         const S390FeatGroupDef *def = s390_feat_group_def(group);
1092         object_property_add(obj, def->name, "bool", get_feature_group,
1093                             set_feature_group, NULL, (void *) group, NULL);
1094         object_property_set_description(obj, def->name, def->desc , NULL);
1095     }
1096 }
1097
1098 static void s390_cpu_model_initfn(Object *obj)
1099 {
1100     S390CPU *cpu = S390_CPU(obj);
1101     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1102
1103     cpu->model = g_malloc0(sizeof(*cpu->model));
1104     /* copy the model, so we can modify it */
1105     cpu->model->def = xcc->cpu_def;
1106     if (xcc->is_static) {
1107         /* base model - features will never change */
1108         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1109                     S390_FEAT_MAX);
1110     } else {
1111         /* latest model - features can change */
1112         bitmap_copy(cpu->model->features,
1113                     cpu->model->def->default_feat, S390_FEAT_MAX);
1114     }
1115 }
1116
1117 static S390CPUDef s390_qemu_cpu_def;
1118 static S390CPUModel s390_qemu_cpu_model;
1119
1120 /* Set the qemu CPU model (on machine initialization). Must not be called
1121  * once CPUs have been created.
1122  */
1123 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
1124                              const S390FeatInit feat_init)
1125 {
1126     const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
1127
1128     g_assert(def);
1129     g_assert(QTAILQ_EMPTY_RCU(&cpus));
1130
1131     /* TCG emulates some features that can usually not be enabled with
1132      * the emulated machine generation. Make sure they can be enabled
1133      * when using the QEMU model by adding them to full_feat. We have
1134      * to copy the definition to do that.
1135      */
1136     memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def));
1137     bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat,
1138               qemu_max_cpu_feat, S390_FEAT_MAX);
1139
1140     /* build the CPU model */
1141     s390_qemu_cpu_model.def = &s390_qemu_cpu_def;
1142     bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
1143     s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
1144 }
1145
1146 static void s390_qemu_cpu_model_initfn(Object *obj)
1147 {
1148     S390CPU *cpu = S390_CPU(obj);
1149
1150     cpu->model = g_malloc0(sizeof(*cpu->model));
1151     /* copy the CPU model so we can modify it */
1152     memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
1153 }
1154
1155 static void s390_max_cpu_model_initfn(Object *obj)
1156 {
1157     const S390CPUModel *max_model;
1158     S390CPU *cpu = S390_CPU(obj);
1159     Error *local_err = NULL;
1160
1161     if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
1162         /* "max" and "host" always work, even without CPU model support */
1163         return;
1164     }
1165
1166     max_model = get_max_cpu_model(&local_err);
1167     if (local_err) {
1168         /* we expect errors only under KVM, when actually querying the kernel */
1169         g_assert(kvm_enabled());
1170         error_report_err(local_err);
1171         /* fallback to unsupported CPU models */
1172         return;
1173     }
1174
1175     cpu->model = g_new(S390CPUModel, 1);
1176     /* copy the CPU model so we can modify it */
1177     memcpy(cpu->model, max_model, sizeof(*cpu->model));
1178 }
1179
1180 static void s390_cpu_model_finalize(Object *obj)
1181 {
1182     S390CPU *cpu = S390_CPU(obj);
1183
1184     g_free(cpu->model);
1185     cpu->model = NULL;
1186 }
1187
1188 static bool get_is_migration_safe(Object *obj, Error **errp)
1189 {
1190     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1191 }
1192
1193 static bool get_is_static(Object *obj, Error **errp)
1194 {
1195     return S390_CPU_GET_CLASS(obj)->is_static;
1196 }
1197
1198 static char *get_description(Object *obj, Error **errp)
1199 {
1200     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1201 }
1202
1203 void s390_cpu_model_class_register_props(ObjectClass *oc)
1204 {
1205     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1206                                    NULL, NULL);
1207     object_class_property_add_bool(oc, "static", get_is_static,
1208                                    NULL, NULL);
1209     object_class_property_add_str(oc, "description", get_description, NULL,
1210                                   NULL);
1211 }
1212
1213 #ifdef CONFIG_KVM
1214 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1215 {
1216     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1217
1218     xcc->kvm_required = true;
1219     xcc->desc = "KVM only: All recognized features";
1220 }
1221 #endif
1222
1223 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1224 {
1225     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1226
1227     /* all base models are migration safe */
1228     xcc->cpu_def = (const S390CPUDef *) data;
1229     xcc->is_migration_safe = true;
1230     xcc->is_static = true;
1231     xcc->desc = xcc->cpu_def->desc;
1232 }
1233
1234 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1235 {
1236     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1237
1238     /* model that can change between QEMU versions */
1239     xcc->cpu_def = (const S390CPUDef *) data;
1240     xcc->is_migration_safe = true;
1241     xcc->desc = xcc->cpu_def->desc;
1242 }
1243
1244 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1245 {
1246     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1247
1248     xcc->is_migration_safe = true;
1249     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1250                                 qemu_hw_version());
1251 }
1252
1253 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
1254 {
1255     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1256
1257     /*
1258      * The "max" model is neither static nor migration safe. Under KVM
1259      * it represents the "host" model. Under TCG it represents some kind of
1260      * "qemu" CPU model without compat handling and maybe with some additional
1261      * CPU features that are not yet unlocked in the "qemu" model.
1262      */
1263     xcc->desc =
1264         "Enables all features supported by the accelerator in the current host";
1265 }
1266
1267 /* Generate type name for a cpu model. Caller has to free the string. */
1268 static char *s390_cpu_type_name(const char *model_name)
1269 {
1270     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1271 }
1272
1273 /* Generate type name for a base cpu model. Caller has to free the string. */
1274 static char *s390_base_cpu_type_name(const char *model_name)
1275 {
1276     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1277 }
1278
1279 ObjectClass *s390_cpu_class_by_name(const char *name)
1280 {
1281     char *typename = s390_cpu_type_name(name);
1282     ObjectClass *oc;
1283
1284     oc = object_class_by_name(typename);
1285     g_free(typename);
1286     return oc;
1287 }
1288
1289 static const TypeInfo qemu_s390_cpu_type_info = {
1290     .name = S390_CPU_TYPE_NAME("qemu"),
1291     .parent = TYPE_S390_CPU,
1292     .instance_init = s390_qemu_cpu_model_initfn,
1293     .instance_finalize = s390_cpu_model_finalize,
1294     .class_init = s390_qemu_cpu_model_class_init,
1295 };
1296
1297 static const TypeInfo max_s390_cpu_type_info = {
1298     .name = S390_CPU_TYPE_NAME("max"),
1299     .parent = TYPE_S390_CPU,
1300     .instance_init = s390_max_cpu_model_initfn,
1301     .instance_finalize = s390_cpu_model_finalize,
1302     .class_init = s390_max_cpu_model_class_init,
1303 };
1304
1305 #ifdef CONFIG_KVM
1306 static const TypeInfo host_s390_cpu_type_info = {
1307     .name = S390_CPU_TYPE_NAME("host"),
1308     .parent = S390_CPU_TYPE_NAME("max"),
1309     .class_init = s390_host_cpu_model_class_init,
1310 };
1311 #endif
1312
1313 static void init_ignored_base_feat(void)
1314 {
1315     static const int feats[] = {
1316          /* MSA subfunctions that could not be available on certain machines */
1317          S390_FEAT_KMAC_DEA,
1318          S390_FEAT_KMAC_TDEA_128,
1319          S390_FEAT_KMAC_TDEA_192,
1320          S390_FEAT_KMC_DEA,
1321          S390_FEAT_KMC_TDEA_128,
1322          S390_FEAT_KMC_TDEA_192,
1323          S390_FEAT_KM_DEA,
1324          S390_FEAT_KM_TDEA_128,
1325          S390_FEAT_KM_TDEA_192,
1326          S390_FEAT_KIMD_SHA_1,
1327          S390_FEAT_KLMD_SHA_1,
1328          /* CSSKE is deprecated on newer generations */
1329          S390_FEAT_CONDITIONAL_SSKE,
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)