/* * CPU models for s390x * * Copyright 2016 IBM Corp. * * Author(s): David Hildenbrand * * This work is licensed under the terms of the GNU GPL, version 2 or (at * your option) any later version. See the COPYING file in the top-level * directory. */ #include "qemu/osdep.h" #include "cpu.h" #include "internal.h" #include "kvm_s390x.h" #include "sysemu/kvm.h" #include "sysemu/tcg.h" #include "qapi/error.h" #include "qapi/visitor.h" #include "qemu/error-report.h" #include "qemu/qemu-print.h" #include "qapi/qmp/qerror.h" #include "qapi/qobject-input-visitor.h" #include "qapi/qmp/qdict.h" #ifndef CONFIG_USER_ONLY #include "sysemu/arch_init.h" #include "hw/pci/pci.h" #endif #include "qapi/qapi-commands-target.h" #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ { \ .name = _name, \ .type = _type, \ .gen = _gen, \ .ec_ga = _ec_ga, \ .mha_pow = _mha_pow, \ .hmfai = _hmfai, \ .desc = _desc, \ .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ } /* * CPU definition list in order of release. Up to generation 14 base features * of a following release have been a superset of the previous release. With * generation 15 one base feature and one optional feature have been deprecated. */ static S390CPUDef s390_cpu_defs[] = { CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM 8561 GA1"), CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), }; #define QEMU_MAX_CPU_TYPE 0x2964 #define QEMU_MAX_CPU_GEN 13 #define QEMU_MAX_CPU_EC_GA 2 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; static S390FeatBitmap qemu_max_cpu_feat; /* features part of a base model but not relevant for finding a base model */ S390FeatBitmap ignored_base_feat; void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) { const S390CPUDef *def; def = s390_find_cpu_def(0, gen, ec_ga, NULL); clear_bit(feat, (unsigned long *)&def->default_feat); } void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) { int i; for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { const S390CPUDef *def = &s390_cpu_defs[i]; if (def->gen < gen) { continue; } if (def->gen == gen && def->ec_ga < ec_ga) { continue; } clear_bit(feat, (unsigned long *)&def->default_feat); } } void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, S390FeatGroup group) { const S390FeatGroupDef *group_def = s390_feat_group_def(group); S390FeatBitmap group_def_off; int i; bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { const S390CPUDef *cpu_def = &s390_cpu_defs[i]; if (cpu_def->gen < gen) { continue; } if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { continue; } bitmap_and((unsigned long *)&cpu_def->default_feat, cpu_def->default_feat, group_def_off, S390_FEAT_MAX); } } uint32_t s390_get_hmfai(void) { static S390CPU *cpu; if (!cpu) { cpu = S390_CPU(qemu_get_cpu(0)); } if (!cpu || !cpu->model) { return 0; } return cpu->model->def->hmfai; } uint8_t s390_get_mha_pow(void) { static S390CPU *cpu; if (!cpu) { cpu = S390_CPU(qemu_get_cpu(0)); } if (!cpu || !cpu->model) { return 0; } return cpu->model->def->mha_pow; } uint32_t s390_get_ibc_val(void) { uint16_t unblocked_ibc, lowest_ibc; static S390CPU *cpu; if (!cpu) { cpu = S390_CPU(qemu_get_cpu(0)); } if (!cpu || !cpu->model) { return 0; } unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); lowest_ibc = cpu->model->lowest_ibc; /* the lowest_ibc always has to be <= unblocked_ibc */ if (!lowest_ibc || lowest_ibc > unblocked_ibc) { return 0; } return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; } void s390_get_feat_block(S390FeatType type, uint8_t *data) { static S390CPU *cpu; if (!cpu) { cpu = S390_CPU(qemu_get_cpu(0)); } if (!cpu || !cpu->model) { return; } s390_fill_feat_block(cpu->model->features, type, data); } bool s390_has_feat(S390Feat feat) { static S390CPU *cpu; if (!cpu) { cpu = S390_CPU(qemu_get_cpu(0)); } if (!cpu || !cpu->model) { #ifdef CONFIG_KVM if (kvm_enabled()) { if (feat == S390_FEAT_VECTOR) { return kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS); } if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { return kvm_s390_get_ri(); } if (feat == S390_FEAT_MSA_EXT_3) { return true; } } #endif if (feat == S390_FEAT_ZPCI) { return true; } return 0; } return test_bit(feat, cpu->model->features); } uint8_t s390_get_gen_for_cpu_type(uint16_t type) { int i; for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { if (s390_cpu_defs[i].type == type) { return s390_cpu_defs[i].gen; } } return 0; } const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, S390FeatBitmap features) { const S390CPUDef *last_compatible = NULL; const S390CPUDef *matching_cpu_type = NULL; int i; if (!gen) { ec_ga = 0; } if (!gen && type) { gen = s390_get_gen_for_cpu_type(type); } for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { const S390CPUDef *def = &s390_cpu_defs[i]; S390FeatBitmap missing; /* don't even try newer generations if we know the generation */ if (gen) { if (def->gen > gen) { break; } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { break; } } if (features) { /* see if the model satisfies the minimum features */ bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); /* * Ignore certain features that are in the base model, but not * relevant for the search (esp. MSA subfunctions). */ bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); if (!bitmap_empty(missing, S390_FEAT_MAX)) { break; } } /* stop the search if we found the exact model */ if (def->type == type && def->ec_ga == ec_ga) { return def; } /* remember if we've at least seen one with the same cpu type */ if (def->type == type) { matching_cpu_type = def; } last_compatible = def; } /* prefer the model with the same cpu type, esp. don't take the BC for EC */ if (matching_cpu_type) { return matching_cpu_type; } return last_compatible; } static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) { const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); char *name = g_strdup(object_class_get_name((ObjectClass *)data)); const char *details = ""; if (scc->is_static) { details = "(static, migration-safe)"; } else if (scc->is_migration_safe) { details = "(migration-safe)"; } /* strip off the -s390x-cpu */ g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); g_free(name); } static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) { const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); const char *name_a = object_class_get_name((ObjectClass *)a); const char *name_b = object_class_get_name((ObjectClass *)b); /* * Move qemu, host and max to the top of the list, qemu first, host second, * max third. */ if (name_a[0] == 'q') { return -1; } else if (name_b[0] == 'q') { return 1; } else if (name_a[0] == 'h') { return -1; } else if (name_b[0] == 'h') { return 1; } else if (name_a[0] == 'm') { return -1; } else if (name_b[0] == 'm') { return 1; } /* keep the same order we have in our table (sorted by release date) */ if (cc_a->cpu_def != cc_b->cpu_def) { return cc_a->cpu_def - cc_b->cpu_def; } /* exact same definition - list base model first */ return cc_a->is_static ? -1 : 1; } void s390_cpu_list(void) { S390FeatGroup group; S390Feat feat; GSList *list; list = object_class_get_list(TYPE_S390_CPU, false); list = g_slist_sort(list, s390_cpu_list_compare); g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); g_slist_free(list); qemu_printf("\nRecognized feature flags:\n"); for (feat = 0; feat < S390_FEAT_MAX; feat++) { const S390FeatDef *def = s390_feat_def(feat); qemu_printf("%-20s %-50s\n", def->name, def->desc); } qemu_printf("\nRecognized feature groups:\n"); for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { const S390FeatGroupDef *def = s390_feat_group_def(group); qemu_printf("%-20s %-50s\n", def->name, def->desc); } } static S390CPUModel *get_max_cpu_model(Error **errp); #ifndef CONFIG_USER_ONLY static void list_add_feat(const char *name, void *opaque); static void check_unavailable_features(const S390CPUModel *max_model, const S390CPUModel *model, strList **unavailable) { S390FeatBitmap missing; /* check general model compatibility */ if (max_model->def->gen < model->def->gen || (max_model->def->gen == model->def->gen && max_model->def->ec_ga < model->def->ec_ga)) { list_add_feat("type", unavailable); } /* detect missing features if any to properly report them */ bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); if (!bitmap_empty(missing, S390_FEAT_MAX)) { s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); } } struct CpuDefinitionInfoListData { CpuDefinitionInfoList *list; S390CPUModel *model; }; static void create_cpu_model_list(ObjectClass *klass, void *opaque) { struct CpuDefinitionInfoListData *cpu_list_data = opaque; CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; CpuDefinitionInfoList *entry; CpuDefinitionInfo *info; char *name = g_strdup(object_class_get_name(klass)); S390CPUClass *scc = S390_CPU_CLASS(klass); /* strip off the -s390x-cpu */ g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; info = g_new0(CpuDefinitionInfo, 1); info->name = name; info->has_migration_safe = true; info->migration_safe = scc->is_migration_safe; info->q_static = scc->is_static; info->q_typename = g_strdup(object_class_get_name(klass)); /* check for unavailable features */ if (cpu_list_data->model) { Object *obj; S390CPU *sc; obj = object_new(object_class_get_name(klass)); sc = S390_CPU(obj); if (sc->model) { info->has_unavailable_features = true; check_unavailable_features(cpu_list_data->model, sc->model, &info->unavailable_features); } object_unref(obj); } entry = g_new0(CpuDefinitionInfoList, 1); entry->value = info; entry->next = *cpu_list; *cpu_list = entry; } CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) { struct CpuDefinitionInfoListData list_data = { .list = NULL, }; list_data.model = get_max_cpu_model(errp); if (*errp) { error_free(*errp); *errp = NULL; } object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, &list_data); return list_data.list; } static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, Error **errp) { const QDict *qdict = NULL; const QDictEntry *e; Visitor *visitor; ObjectClass *oc; S390CPU *cpu; Object *obj; if (info->props) { qdict = qobject_to(QDict, info->props); if (!qdict) { error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); return; } } oc = cpu_class_by_name(TYPE_S390_CPU, info->name); if (!oc) { error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); return; } if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { error_setg(errp, "The CPU definition '%s' requires KVM", info->name); return; } obj = object_new(object_class_get_name(oc)); cpu = S390_CPU(obj); if (!cpu->model) { error_setg(errp, "Details about the host CPU model are not available, " "it cannot be used."); object_unref(obj); return; } if (qdict) { visitor = qobject_input_visitor_new(info->props); visit_start_struct(visitor, NULL, NULL, 0, errp); if (*errp) { object_unref(obj); return; } for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { object_property_set(obj, visitor, e->key, errp); if (*errp) { break; } } if (!*errp) { visit_check_struct(visitor, errp); } visit_end_struct(visitor, NULL); visit_free(visitor); if (*errp) { object_unref(obj); return; } } /* copy the model and throw the cpu away */ memcpy(model, cpu->model, sizeof(*model)); object_unref(obj); } static void qdict_add_disabled_feat(const char *name, void *opaque) { qdict_put_bool(opaque, name, false); } static void qdict_add_enabled_feat(const char *name, void *opaque) { qdict_put_bool(opaque, name, true); } /* convert S390CPUDef into a static CpuModelInfo */ static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, bool delta_changes) { QDict *qdict = qdict_new(); S390FeatBitmap bitmap; /* always fallback to the static base model */ info->name = g_strdup_printf("%s-base", model->def->name); if (delta_changes) { /* features deleted from the base feature set */ bitmap_andnot(bitmap, model->def->base_feat, model->features, S390_FEAT_MAX); if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); } /* features added to the base feature set */ bitmap_andnot(bitmap, model->features, model->def->base_feat, S390_FEAT_MAX); if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); } } else { /* expand all features */ s390_feat_bitmap_to_ascii(model->features, qdict, qdict_add_enabled_feat); bitmap_complement(bitmap, model->features, S390_FEAT_MAX); s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); } if (!qdict_size(qdict)) { qobject_unref(qdict); } else { info->props = QOBJECT(qdict); info->has_props = true; } } CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, CpuModelInfo *model, Error **errp) { CpuModelExpansionInfo *expansion_info = NULL; S390CPUModel s390_model; bool delta_changes = false; /* convert it to our internal representation */ cpu_model_from_info(&s390_model, model, errp); if (*errp) { return NULL; } if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { delta_changes = true; } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { error_setg(errp, "The requested expansion type is not supported."); return NULL; } /* convert it back to a static representation */ expansion_info = g_new0(CpuModelExpansionInfo, 1); expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); return expansion_info; } static void list_add_feat(const char *name, void *opaque) { strList **last = (strList **) opaque; strList *entry; entry = g_new0(strList, 1); entry->value = g_strdup(name); entry->next = *last; *last = entry; } CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, CpuModelInfo *infob, Error **errp) { CpuModelCompareResult feat_result, gen_result; CpuModelCompareInfo *compare_info; S390FeatBitmap missing, added; S390CPUModel modela, modelb; /* convert both models to our internal representation */ cpu_model_from_info(&modela, infoa, errp); if (*errp) { return NULL; } cpu_model_from_info(&modelb, infob, errp); if (*errp) { return NULL; } compare_info = g_new0(CpuModelCompareInfo, 1); /* check the cpu generation and ga level */ if (modela.def->gen == modelb.def->gen) { if (modela.def->ec_ga == modelb.def->ec_ga) { /* ec and corresponding bc are identical */ gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; } else if (modela.def->ec_ga < modelb.def->ec_ga) { gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; } else { gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; } } else if (modela.def->gen < modelb.def->gen) { gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; } else { gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; } if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { /* both models cannot be made identical */ list_add_feat("type", &compare_info->responsible_properties); } /* check the feature set */ if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; } else { bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); s390_feat_bitmap_to_ascii(missing, &compare_info->responsible_properties, list_add_feat); bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, list_add_feat); if (bitmap_empty(missing, S390_FEAT_MAX)) { feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; } else if (bitmap_empty(added, S390_FEAT_MAX)) { feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; } else { feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; } } /* combine the results */ if (gen_result == feat_result) { compare_info->result = gen_result; } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { compare_info->result = gen_result; } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { compare_info->result = feat_result; } else { compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; } return compare_info; } CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, CpuModelInfo *infob, Error **errp) { CpuModelBaselineInfo *baseline_info; S390CPUModel modela, modelb, model; uint16_t cpu_type; uint8_t max_gen_ga; uint8_t max_gen; /* convert both models to our internal representation */ cpu_model_from_info(&modela, infoa, errp); if (*errp) { return NULL; } cpu_model_from_info(&modelb, infob, errp); if (*errp) { return NULL; } /* features both models support */ bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); /* detect the maximum model not regarding features */ if (modela.def->gen == modelb.def->gen) { if (modela.def->type == modelb.def->type) { cpu_type = modela.def->type; } else { cpu_type = 0; } max_gen = modela.def->gen; max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); } else if (modela.def->gen > modelb.def->gen) { cpu_type = modelb.def->type; max_gen = modelb.def->gen; max_gen_ga = modelb.def->ec_ga; } else { cpu_type = modela.def->type; max_gen = modela.def->gen; max_gen_ga = modela.def->ec_ga; } model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, model.features); /* models without early base features (esan3) are bad */ if (!model.def) { error_setg(errp, "No compatible CPU model could be created as" " important base features are disabled"); return NULL; } /* strip off features not part of the max model */ bitmap_and(model.features, model.features, model.def->full_feat, S390_FEAT_MAX); baseline_info = g_new0(CpuModelBaselineInfo, 1); baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); cpu_info_from_model(baseline_info->model, &model, true); return baseline_info; } #endif static void check_consistency(const S390CPUModel *model) { static int dep[][2] = { { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, { S390_FEAT_CMM_NT, S390_FEAT_CMM }, { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, }; int i; for (i = 0; i < ARRAY_SIZE(dep); i++) { if (test_bit(dep[i][0], model->features) && !test_bit(dep[i][1], model->features)) { warn_report("\'%s\' requires \'%s\'.", s390_feat_def(dep[i][0])->name, s390_feat_def(dep[i][1])->name); } } } static void error_prepend_missing_feat(const char *name, void *opaque) { error_prepend((Error **) opaque, "%s ", name); } static void check_compatibility(const S390CPUModel *max_model, const S390CPUModel *model, Error **errp) { S390FeatBitmap missing; if (model->def->gen > max_model->def->gen) { error_setg(errp, "Selected CPU generation is too new. Maximum " "supported model in the configuration: \'%s\'", max_model->def->name); return; } else if (model->def->gen == max_model->def->gen && model->def->ec_ga > max_model->def->ec_ga) { error_setg(errp, "Selected CPU GA level is too new. Maximum " "supported model in the configuration: \'%s\'", max_model->def->name); return; } /* detect the missing features to properly report them */ bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); if (bitmap_empty(missing, S390_FEAT_MAX)) { return; } error_setg(errp, " "); s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); error_prepend(errp, "Some features requested in the CPU model are not " "available in the configuration: "); } static S390CPUModel *get_max_cpu_model(Error **errp) { static S390CPUModel max_model; static bool cached; if (cached) { return &max_model; } if (kvm_enabled()) { kvm_s390_get_host_cpu_model(&max_model, errp); } else { max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, QEMU_MAX_CPU_EC_GA, NULL); bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); } if (!*errp) { cached = true; return &max_model; } return NULL; } static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) { #ifndef CONFIG_USER_ONLY static S390CPUModel applied_model; static bool applied; /* * We have the same model for all VCPUs. KVM can only be configured before * any VCPUs are defined in KVM. */ if (applied) { if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { error_setg(errp, "Mixed CPU models are not supported on s390x."); } return; } if (kvm_enabled()) { kvm_s390_apply_cpu_model(model, errp); } if (!*errp) { applied = true; if (model) { applied_model = *model; } } #endif } void s390_realize_cpu_model(CPUState *cs, Error **errp) { S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); S390CPU *cpu = S390_CPU(cs); const S390CPUModel *max_model; if (xcc->kvm_required && !kvm_enabled()) { error_setg(errp, "CPU definition requires KVM"); return; } if (!cpu->model) { /* no host model support -> perform compatibility stuff */ apply_cpu_model(NULL, errp); return; } max_model = get_max_cpu_model(errp); if (*errp) { error_prepend(errp, "CPU models are not available: "); return; } /* copy over properties that can vary */ cpu->model->lowest_ibc = max_model->lowest_ibc; cpu->model->cpu_id = max_model->cpu_id; cpu->model->cpu_id_format = max_model->cpu_id_format; cpu->model->cpu_ver = max_model->cpu_ver; check_consistency(cpu->model); check_compatibility(max_model, cpu->model, errp); if (*errp) { return; } apply_cpu_model(cpu->model, errp); #if !defined(CONFIG_USER_ONLY) cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); if (tcg_enabled()) { /* basic mode, write the cpu address into the first 4 bit of the ID */ cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); } #endif } static void get_feature(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { S390Feat feat = (S390Feat) opaque; S390CPU *cpu = S390_CPU(obj); bool value; if (!cpu->model) { error_setg(errp, "Details about the host CPU model are not available, " "features cannot be queried."); return; } value = test_bit(feat, cpu->model->features); visit_type_bool(v, name, &value, errp); } static void set_feature(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { S390Feat feat = (S390Feat) opaque; DeviceState *dev = DEVICE(obj); S390CPU *cpu = S390_CPU(obj); bool value; if (dev->realized) { error_setg(errp, "Attempt to set property '%s' on '%s' after " "it was realized", name, object_get_typename(obj)); return; } else if (!cpu->model) { error_setg(errp, "Details about the host CPU model are not available, " "features cannot be changed."); return; } visit_type_bool(v, name, &value, errp); if (*errp) { return; } if (value) { if (!test_bit(feat, cpu->model->def->full_feat)) { error_setg(errp, "Feature '%s' is not available for CPU model '%s'," " it was introduced with later models.", name, cpu->model->def->name); return; } set_bit(feat, cpu->model->features); } else { clear_bit(feat, cpu->model->features); } } static void get_feature_group(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { S390FeatGroup group = (S390FeatGroup) opaque; const S390FeatGroupDef *def = s390_feat_group_def(group); S390CPU *cpu = S390_CPU(obj); S390FeatBitmap tmp; bool value; if (!cpu->model) { error_setg(errp, "Details about the host CPU model are not available, " "features cannot be queried."); return; } /* a group is enabled if all features are enabled */ bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); visit_type_bool(v, name, &value, errp); } static void set_feature_group(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { S390FeatGroup group = (S390FeatGroup) opaque; const S390FeatGroupDef *def = s390_feat_group_def(group); DeviceState *dev = DEVICE(obj); S390CPU *cpu = S390_CPU(obj); bool value; if (dev->realized) { error_setg(errp, "Attempt to set property '%s' on '%s' after " "it was realized", name, object_get_typename(obj)); return; } else if (!cpu->model) { error_setg(errp, "Details about the host CPU model are not available, " "features cannot be changed."); return; } visit_type_bool(v, name, &value, errp); if (*errp) { return; } if (value) { /* groups are added in one shot, so an intersect is sufficient */ if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, S390_FEAT_MAX)) { error_setg(errp, "Group '%s' is not available for CPU model '%s'," " it was introduced with later models.", name, cpu->model->def->name); return; } bitmap_or(cpu->model->features, cpu->model->features, def->feat, S390_FEAT_MAX); } else { bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, S390_FEAT_MAX); } } void s390_cpu_model_register_props(Object *obj) { S390FeatGroup group; S390Feat feat; for (feat = 0; feat < S390_FEAT_MAX; feat++) { const S390FeatDef *def = s390_feat_def(feat); object_property_add(obj, def->name, "bool", get_feature, set_feature, NULL, (void *) feat, NULL); object_property_set_description(obj, def->name, def->desc , NULL); } for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { const S390FeatGroupDef *def = s390_feat_group_def(group); object_property_add(obj, def->name, "bool", get_feature_group, set_feature_group, NULL, (void *) group, NULL); object_property_set_description(obj, def->name, def->desc , NULL); } } static void s390_cpu_model_initfn(Object *obj) { S390CPU *cpu = S390_CPU(obj); S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); cpu->model = g_malloc0(sizeof(*cpu->model)); /* copy the model, so we can modify it */ cpu->model->def = xcc->cpu_def; if (xcc->is_static) { /* base model - features will never change */ bitmap_copy(cpu->model->features, cpu->model->def->base_feat, S390_FEAT_MAX); } else { /* latest model - features can change */ bitmap_copy(cpu->model->features, cpu->model->def->default_feat, S390_FEAT_MAX); } } static S390CPUDef s390_qemu_cpu_def; static S390CPUModel s390_qemu_cpu_model; /* Set the qemu CPU model (on machine initialization). Must not be called * once CPUs have been created. */ void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, const S390FeatInit feat_init) { const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); g_assert(def); g_assert(QTAILQ_EMPTY_RCU(&cpus)); /* TCG emulates some features that can usually not be enabled with * the emulated machine generation. Make sure they can be enabled * when using the QEMU model by adding them to full_feat. We have * to copy the definition to do that. */ memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, qemu_max_cpu_feat, S390_FEAT_MAX); /* build the CPU model */ s390_qemu_cpu_model.def = &s390_qemu_cpu_def; bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); } static void s390_qemu_cpu_model_initfn(Object *obj) { S390CPU *cpu = S390_CPU(obj); cpu->model = g_malloc0(sizeof(*cpu->model)); /* copy the CPU model so we can modify it */ memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); } static void s390_max_cpu_model_initfn(Object *obj) { const S390CPUModel *max_model; S390CPU *cpu = S390_CPU(obj); Error *local_err = NULL; if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { /* "max" and "host" always work, even without CPU model support */ return; } max_model = get_max_cpu_model(&local_err); if (local_err) { /* we expect errors only under KVM, when actually querying the kernel */ g_assert(kvm_enabled()); error_report_err(local_err); /* fallback to unsupported CPU models */ return; } cpu->model = g_new(S390CPUModel, 1); /* copy the CPU model so we can modify it */ memcpy(cpu->model, max_model, sizeof(*cpu->model)); } static void s390_cpu_model_finalize(Object *obj) { S390CPU *cpu = S390_CPU(obj); g_free(cpu->model); cpu->model = NULL; } static bool get_is_migration_safe(Object *obj, Error **errp) { return S390_CPU_GET_CLASS(obj)->is_migration_safe; } static bool get_is_static(Object *obj, Error **errp) { return S390_CPU_GET_CLASS(obj)->is_static; } static char *get_description(Object *obj, Error **errp) { return g_strdup(S390_CPU_GET_CLASS(obj)->desc); } void s390_cpu_model_class_register_props(ObjectClass *oc) { object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, NULL, NULL); object_class_property_add_bool(oc, "static", get_is_static, NULL, NULL); object_class_property_add_str(oc, "description", get_description, NULL, NULL); } #ifdef CONFIG_KVM static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) { S390CPUClass *xcc = S390_CPU_CLASS(oc); xcc->kvm_required = true; xcc->desc = "KVM only: All recognized features"; } #endif static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) { S390CPUClass *xcc = S390_CPU_CLASS(oc); /* all base models are migration safe */ xcc->cpu_def = (const S390CPUDef *) data; xcc->is_migration_safe = true; xcc->is_static = true; xcc->desc = xcc->cpu_def->desc; } static void s390_cpu_model_class_init(ObjectClass *oc, void *data) { S390CPUClass *xcc = S390_CPU_CLASS(oc); /* model that can change between QEMU versions */ xcc->cpu_def = (const S390CPUDef *) data; xcc->is_migration_safe = true; xcc->desc = xcc->cpu_def->desc; } static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) { S390CPUClass *xcc = S390_CPU_CLASS(oc); xcc->is_migration_safe = true; xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", qemu_hw_version()); } static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) { S390CPUClass *xcc = S390_CPU_CLASS(oc); /* * The "max" model is neither static nor migration safe. Under KVM * it represents the "host" model. Under TCG it represents some kind of * "qemu" CPU model without compat handling and maybe with some additional * CPU features that are not yet unlocked in the "qemu" model. */ xcc->desc = "Enables all features supported by the accelerator in the current host"; } /* Generate type name for a cpu model. Caller has to free the string. */ static char *s390_cpu_type_name(const char *model_name) { return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); } /* Generate type name for a base cpu model. Caller has to free the string. */ static char *s390_base_cpu_type_name(const char *model_name) { return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); } ObjectClass *s390_cpu_class_by_name(const char *name) { char *typename = s390_cpu_type_name(name); ObjectClass *oc; oc = object_class_by_name(typename); g_free(typename); return oc; } static const TypeInfo qemu_s390_cpu_type_info = { .name = S390_CPU_TYPE_NAME("qemu"), .parent = TYPE_S390_CPU, .instance_init = s390_qemu_cpu_model_initfn, .instance_finalize = s390_cpu_model_finalize, .class_init = s390_qemu_cpu_model_class_init, }; static const TypeInfo max_s390_cpu_type_info = { .name = S390_CPU_TYPE_NAME("max"), .parent = TYPE_S390_CPU, .instance_init = s390_max_cpu_model_initfn, .instance_finalize = s390_cpu_model_finalize, .class_init = s390_max_cpu_model_class_init, }; #ifdef CONFIG_KVM static const TypeInfo host_s390_cpu_type_info = { .name = S390_CPU_TYPE_NAME("host"), .parent = S390_CPU_TYPE_NAME("max"), .class_init = s390_host_cpu_model_class_init, }; #endif static void init_ignored_base_feat(void) { static const int feats[] = { /* MSA subfunctions that could not be available on certain machines */ S390_FEAT_KMAC_DEA, S390_FEAT_KMAC_TDEA_128, S390_FEAT_KMAC_TDEA_192, S390_FEAT_KMC_DEA, S390_FEAT_KMC_TDEA_128, S390_FEAT_KMC_TDEA_192, S390_FEAT_KM_DEA, S390_FEAT_KM_TDEA_128, S390_FEAT_KM_TDEA_192, S390_FEAT_KIMD_SHA_1, S390_FEAT_KLMD_SHA_1, /* CSSKE is deprecated on newer generations */ S390_FEAT_CONDITIONAL_SSKE, }; int i; for (i = 0; i < ARRAY_SIZE(feats); i++) { set_bit(feats[i], ignored_base_feat); } } static void register_types(void) { static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; int i; init_ignored_base_feat(); /* init all bitmaps from gnerated data initially */ s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { s390_init_feat_bitmap(s390_cpu_defs[i].base_init, s390_cpu_defs[i].base_feat); s390_init_feat_bitmap(s390_cpu_defs[i].default_init, s390_cpu_defs[i].default_feat); s390_init_feat_bitmap(s390_cpu_defs[i].full_init, s390_cpu_defs[i].full_feat); } /* initialize the qemu model with latest definition */ s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, QEMU_MAX_CPU_EC_GA, qemu_latest_init); for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); TypeInfo ti_base = { .name = base_name, .parent = TYPE_S390_CPU, .instance_init = s390_cpu_model_initfn, .instance_finalize = s390_cpu_model_finalize, .class_init = s390_base_cpu_model_class_init, .class_data = (void *) &s390_cpu_defs[i], }; char *name = s390_cpu_type_name(s390_cpu_defs[i].name); TypeInfo ti = { .name = name, .parent = TYPE_S390_CPU, .instance_init = s390_cpu_model_initfn, .instance_finalize = s390_cpu_model_finalize, .class_init = s390_cpu_model_class_init, .class_data = (void *) &s390_cpu_defs[i], }; type_register_static(&ti_base); type_register_static(&ti); g_free(base_name); g_free(name); } type_register_static(&qemu_s390_cpu_type_info); type_register_static(&max_s390_cpu_type_info); #ifdef CONFIG_KVM type_register_static(&host_s390_cpu_type_info); #endif } type_init(register_types)