tests/qtest/arm-cpu-features.c

   1 /*
   2  * Arm CPU feature test cases
   3  *
   4  * Copyright (c) 2019 Red Hat Inc.
   5  * Authors:
   6  *  Andrew Jones <drjones@redhat.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9  * See the COPYING file in the top-level directory.
  10  */
  11 #include "qemu/osdep.h"
  12 #include "qemu/bitops.h"
  13 #include "libqtest.h"
  14 #include "qapi/qmp/qdict.h"
  15 #include "qapi/qmp/qjson.h"
  16
  17 /*
  18  * We expect the SVE max-vq to be 16. Also it must be <= 64
  19  * for our test code, otherwise 'vls' can't just be a uint64_t.
  20  */
  21 #define SVE_MAX_VQ 16
  22
  23 #define MACHINE     "-machine virt,gic-version=max -accel tcg "
  24 #define MACHINE_KVM "-machine virt,gic-version=max -accel kvm -accel tcg "
  25 #define QUERY_HEAD  "{ 'execute': 'query-cpu-model-expansion', " \
  26                     "  'arguments': { 'type': 'full', "
  27 #define QUERY_TAIL  "}}"
  28
  29 static QDict *do_query_no_props(QTestState *qts, const char *cpu_type)
  30 {
  31     return qtest_qmp(qts, QUERY_HEAD "'model': { 'name': %s }"
  32                           QUERY_TAIL, cpu_type);
  33 }
  34
  35 static QDict *do_query(QTestState *qts, const char *cpu_type,
  36                        const char *fmt, ...)
  37 {
  38     QDict *resp;
  39
  40     if (fmt) {
  41         QDict *args;
  42         va_list ap;
  43
  44         va_start(ap, fmt);
  45         args = qdict_from_vjsonf_nofail(fmt, ap);
  46         va_end(ap);
  47
  48         resp = qtest_qmp(qts, QUERY_HEAD "'model': { 'name': %s, "
  49                                                     "'props': %p }"
  50                               QUERY_TAIL, cpu_type, args);
  51     } else {
  52         resp = do_query_no_props(qts, cpu_type);
  53     }
  54
  55     return resp;
  56 }
  57
  58 static const char *resp_get_error(QDict *resp)
  59 {
  60     QDict *qdict;
  61
  62     g_assert(resp);
  63
  64     qdict = qdict_get_qdict(resp, "error");
  65     if (qdict) {
  66         return qdict_get_str(qdict, "desc");
  67     }
  68
  69     return NULL;
  70 }
  71
  72 #define assert_error(qts, cpu_type, expected_error, fmt, ...)          \
  73 ({                                                                     \
  74     QDict *_resp;                                                      \
  75     const char *_error;                                                \
  76                                                                        \
  77     _resp = do_query(qts, cpu_type, fmt, ##__VA_ARGS__);               \
  78     g_assert(_resp);                                                   \
  79     _error = resp_get_error(_resp);                                    \
  80     g_assert(_error);                                                  \
  81     g_assert(g_str_equal(_error, expected_error));                     \
  82     qobject_unref(_resp);                                              \
  83 })
  84
  85 static bool resp_has_props(QDict *resp)
  86 {
  87     QDict *qdict;
  88
  89     g_assert(resp);
  90
  91     if (!qdict_haskey(resp, "return")) {
  92         return false;
  93     }
  94     qdict = qdict_get_qdict(resp, "return");
  95
  96     if (!qdict_haskey(qdict, "model")) {
  97         return false;
  98     }
  99     qdict = qdict_get_qdict(qdict, "model");
 100
 101     return qdict_haskey(qdict, "props");
 102 }
 103
 104 static QDict *resp_get_props(QDict *resp)
 105 {
 106     QDict *qdict;
 107
 108     g_assert(resp);
 109     g_assert(resp_has_props(resp));
 110
 111     qdict = qdict_get_qdict(resp, "return");
 112     qdict = qdict_get_qdict(qdict, "model");
 113     qdict = qdict_get_qdict(qdict, "props");
 114
 115     return qdict;
 116 }
 117
 118 static bool resp_get_feature(QDict *resp, const char *feature)
 119 {
 120     QDict *props;
 121
 122     g_assert(resp);
 123     g_assert(resp_has_props(resp));
 124     props = resp_get_props(resp);
 125     g_assert(qdict_get(props, feature));
 126     return qdict_get_bool(props, feature);
 127 }
 128
 129 #define assert_has_feature(qts, cpu_type, feature)                     \
 130 ({                                                                     \
 131     QDict *_resp = do_query_no_props(qts, cpu_type);                   \
 132     g_assert(_resp);                                                   \
 133     g_assert(resp_has_props(_resp));                                   \
 134     g_assert(qdict_get(resp_get_props(_resp), feature));               \
 135     qobject_unref(_resp);                                              \
 136 })
 137
 138 #define assert_has_not_feature(qts, cpu_type, feature)                 \
 139 ({                                                                     \
 140     QDict *_resp = do_query_no_props(qts, cpu_type);                   \
 141     g_assert(_resp);                                                   \
 142     g_assert(!resp_has_props(_resp) ||                                 \
 143              !qdict_get(resp_get_props(_resp), feature));              \
 144     qobject_unref(_resp);                                              \
 145 })
 146
 147 #define resp_assert_feature(resp, feature, expected_value)             \
 148 ({                                                                     \
 149     QDict *_props;                                                     \
 150                                                                        \
 151     g_assert(_resp);                                                   \
 152     g_assert(resp_has_props(_resp));                                   \
 153     _props = resp_get_props(_resp);                                    \
 154     g_assert(qdict_get(_props, feature));                              \
 155     g_assert(qdict_get_bool(_props, feature) == (expected_value));     \
 156 })
 157
 158 #define assert_feature(qts, cpu_type, feature, expected_value)         \
 159 ({                                                                     \
 160     QDict *_resp;                                                      \
 161                                                                        \
 162     _resp = do_query_no_props(qts, cpu_type);                          \
 163     g_assert(_resp);                                                   \
 164     resp_assert_feature(_resp, feature, expected_value);               \
 165     qobject_unref(_resp);                                              \
 166 })
 167
 168 #define assert_set_feature(qts, cpu_type, feature, value)              \
 169 ({                                                                     \
 170     const char *_fmt = (value) ? "{ %s: true }" : "{ %s: false }";     \
 171     QDict *_resp;                                                      \
 172                                                                        \
 173     _resp = do_query(qts, cpu_type, _fmt, feature);                    \
 174     g_assert(_resp);                                                   \
 175     resp_assert_feature(_resp, feature, value);                        \
 176     qobject_unref(_resp);                                              \
 177 })
 178
 179 #define assert_has_feature_enabled(qts, cpu_type, feature)             \
 180     assert_feature(qts, cpu_type, feature, true)
 181
 182 #define assert_has_feature_disabled(qts, cpu_type, feature)            \
 183     assert_feature(qts, cpu_type, feature, false)
 184
 185 static void assert_type_full(QTestState *qts)
 186 {
 187     const char *error;
 188     QDict *resp;
 189
 190     resp = qtest_qmp(qts, "{ 'execute': 'query-cpu-model-expansion', "
 191                             "'arguments': { 'type': 'static', "
 192                                            "'model': { 'name': 'foo' }}}");
 193     g_assert(resp);
 194     error = resp_get_error(resp);
 195     g_assert(error);
 196     g_assert(g_str_equal(error,
 197                          "The requested expansion type is not supported"));
 198     qobject_unref(resp);
 199 }
 200
 201 static void assert_bad_props(QTestState *qts, const char *cpu_type)
 202 {
 203     const char *error;
 204     QDict *resp;
 205
 206     resp = qtest_qmp(qts, "{ 'execute': 'query-cpu-model-expansion', "
 207                             "'arguments': { 'type': 'full', "
 208                                            "'model': { 'name': %s, "
 209                                                       "'props': false }}}",
 210                      cpu_type);
 211     g_assert(resp);
 212     error = resp_get_error(resp);
 213     g_assert(error);
 214     g_assert(g_str_equal(error,
 215                          "Invalid parameter type for 'props', expected: dict"));
 216     qobject_unref(resp);
 217 }
 218
 219 static uint64_t resp_get_sve_vls(QDict *resp)
 220 {
 221     QDict *props;
 222     const QDictEntry *e;
 223     uint64_t vls = 0;
 224     int n = 0;
 225
 226     g_assert(resp);
 227     g_assert(resp_has_props(resp));
 228
 229     props = resp_get_props(resp);
 230
 231     for (e = qdict_first(props); e; e = qdict_next(props, e)) {
 232         if (strlen(e->key) > 3 && !strncmp(e->key, "sve", 3) &&
 233             g_ascii_isdigit(e->key[3])) {
 234             char *endptr;
 235             int bits;
 236
 237             bits = g_ascii_strtoll(&e->key[3], &endptr, 10);
 238             if (!bits || *endptr != '\0') {
 239                 continue;
 240             }
 241
 242             if (qdict_get_bool(props, e->key)) {
 243                 vls |= BIT_ULL((bits / 128) - 1);
 244             }
 245             ++n;
 246         }
 247     }
 248
 249     g_assert(n == SVE_MAX_VQ);
 250
 251     return vls;
 252 }
 253
 254 #define assert_sve_vls(qts, cpu_type, expected_vls, fmt, ...)          \
 255 ({                                                                     \
 256     QDict *_resp = do_query(qts, cpu_type, fmt, ##__VA_ARGS__);        \
 257     g_assert(_resp);                                                   \
 258     g_assert(resp_has_props(_resp));                                   \
 259     g_assert(resp_get_sve_vls(_resp) == expected_vls);                 \
 260     qobject_unref(_resp);                                              \
 261 })
 262
 263 static void sve_tests_default(QTestState *qts, const char *cpu_type)
 264 {
 265     /*
 266      * With no sve-max-vq or sve<N> properties on the command line
 267      * the default is to have all vector lengths enabled. This also
 268      * tests that 'sve' is 'on' by default.
 269      */
 270     assert_sve_vls(qts, cpu_type, BIT_ULL(SVE_MAX_VQ) - 1, NULL);
 271
 272     /* With SVE off, all vector lengths should also be off. */
 273     assert_sve_vls(qts, cpu_type, 0, "{ 'sve': false }");
 274
 275     /* With SVE on, we must have at least one vector length enabled. */
 276     assert_error(qts, cpu_type, "cannot disable sve128", "{ 'sve128': false }");
 277
 278     /* Basic enable/disable tests. */
 279     assert_sve_vls(qts, cpu_type, 0x7, "{ 'sve384': true }");
 280     assert_sve_vls(qts, cpu_type, ((BIT_ULL(SVE_MAX_VQ) - 1) & ~BIT_ULL(2)),
 281                    "{ 'sve384': false }");
 282
 283     /*
 284      * ---------------------------------------------------------------------
 285      *               power-of-two(vq)   all-power-            can      can
 286      *                                  of-two(< vq)        enable   disable
 287      * ---------------------------------------------------------------------
 288      * vq < max_vq      no                MUST*              yes      yes
 289      * vq < max_vq      yes               MUST*              yes      no
 290      * ---------------------------------------------------------------------
 291      * vq == max_vq     n/a               MUST*              yes**    yes**
 292      * ---------------------------------------------------------------------
 293      * vq > max_vq      n/a               no                 no       yes
 294      * vq > max_vq      n/a               yes                yes      yes
 295      * ---------------------------------------------------------------------
 296      *
 297      * [*] "MUST" means this requirement must already be satisfied,
 298      *     otherwise 'max_vq' couldn't itself be enabled.
 299      *
 300      * [**] Not testable with the QMP interface, only with the command line.
 301      */
 302
 303     /* max_vq := 8 */
 304     assert_sve_vls(qts, cpu_type, 0x8b, "{ 'sve1024': true }");
 305
 306     /* max_vq := 8, vq < max_vq, !power-of-two(vq) */
 307     assert_sve_vls(qts, cpu_type, 0x8f,
 308                    "{ 'sve1024': true, 'sve384': true }");
 309     assert_sve_vls(qts, cpu_type, 0x8b,
 310                    "{ 'sve1024': true, 'sve384': false }");
 311
 312     /* max_vq := 8, vq < max_vq, power-of-two(vq) */
 313     assert_sve_vls(qts, cpu_type, 0x8b,
 314                    "{ 'sve1024': true, 'sve256': true }");
 315     assert_error(qts, cpu_type, "cannot disable sve256",
 316                  "{ 'sve1024': true, 'sve256': false }");
 317
 318     /* max_vq := 3, vq > max_vq, !all-power-of-two(< vq) */
 319     assert_error(qts, cpu_type, "cannot disable sve512",
 320                  "{ 'sve384': true, 'sve512': false, 'sve640': true }");
 321
 322     /*
 323      * We can disable power-of-two vector lengths when all larger lengths
 324      * are also disabled. We only need to disable the power-of-two length,
 325      * as all non-enabled larger lengths will then be auto-disabled.
 326      */
 327     assert_sve_vls(qts, cpu_type, 0x7, "{ 'sve512': false }");
 328
 329     /* max_vq := 3, vq > max_vq, all-power-of-two(< vq) */
 330     assert_sve_vls(qts, cpu_type, 0x1f,
 331                    "{ 'sve384': true, 'sve512': true, 'sve640': true }");
 332     assert_sve_vls(qts, cpu_type, 0xf,
 333                    "{ 'sve384': true, 'sve512': true, 'sve640': false }");
 334 }
 335
 336 static void sve_tests_sve_max_vq_8(const void *data)
 337 {
 338     QTestState *qts;
 339
 340     qts = qtest_init(MACHINE "-cpu max,sve-max-vq=8");
 341
 342     assert_sve_vls(qts, "max", BIT_ULL(8) - 1, NULL);
 343
 344     /*
 345      * Disabling the max-vq set by sve-max-vq is not allowed, but
 346      * of course enabling it is OK.
 347      */
 348     assert_error(qts, "max", "cannot disable sve1024", "{ 'sve1024': false }");
 349     assert_sve_vls(qts, "max", 0xff, "{ 'sve1024': true }");
 350
 351     /*
 352      * Enabling anything larger than max-vq set by sve-max-vq is not
 353      * allowed, but of course disabling everything larger is OK.
 354      */
 355     assert_error(qts, "max", "cannot enable sve1152", "{ 'sve1152': true }");
 356     assert_sve_vls(qts, "max", 0xff, "{ 'sve1152': false }");
 357
 358     /*
 359      * We can enable/disable non power-of-two lengths smaller than the
 360      * max-vq set by sve-max-vq, but, while we can enable power-of-two
 361      * lengths, we can't disable them.
 362      */
 363     assert_sve_vls(qts, "max", 0xff, "{ 'sve384': true }");
 364     assert_sve_vls(qts, "max", 0xfb, "{ 'sve384': false }");
 365     assert_sve_vls(qts, "max", 0xff, "{ 'sve256': true }");
 366     assert_error(qts, "max", "cannot disable sve256", "{ 'sve256': false }");
 367
 368     qtest_quit(qts);
 369 }
 370
 371 static void sve_tests_sve_off(const void *data)
 372 {
 373     QTestState *qts;
 374
 375     qts = qtest_init(MACHINE "-cpu max,sve=off");
 376
 377     /* SVE is off, so the map should be empty. */
 378     assert_sve_vls(qts, "max", 0, NULL);
 379
 380     /* The map stays empty even if we turn lengths off. */
 381     assert_sve_vls(qts, "max", 0, "{ 'sve128': false }");
 382
 383     /* It's an error to enable lengths when SVE is off. */
 384     assert_error(qts, "max", "cannot enable sve128", "{ 'sve128': true }");
 385
 386     /* With SVE re-enabled we should get all vector lengths enabled. */
 387     assert_sve_vls(qts, "max", BIT_ULL(SVE_MAX_VQ) - 1, "{ 'sve': true }");
 388
 389     /* Or enable SVE with just specific vector lengths. */
 390     assert_sve_vls(qts, "max", 0x3,
 391                    "{ 'sve': true, 'sve128': true, 'sve256': true }");
 392
 393     qtest_quit(qts);
 394 }
 395
 396 static void sve_tests_sve_off_kvm(const void *data)
 397 {
 398     QTestState *qts;
 399
 400     qts = qtest_init(MACHINE_KVM "-cpu max,sve=off");
 401
 402     /*
 403      * We don't know if this host supports SVE so we don't
 404      * attempt to test enabling anything. We only test that
 405      * everything is disabled (as it should be with sve=off)
 406      * and that using sve<N>=off to explicitly disable vector
 407      * lengths is OK too.
 408      */
 409     assert_sve_vls(qts, "max", 0, NULL);
 410     assert_sve_vls(qts, "max", 0, "{ 'sve128': false }");
 411
 412     qtest_quit(qts);
 413 }
 414
 415 static void pauth_tests_default(QTestState *qts, const char *cpu_type)
 416 {
 417     assert_has_feature_enabled(qts, cpu_type, "pauth");
 418     assert_has_feature_disabled(qts, cpu_type, "pauth-impdef");
 419     assert_set_feature(qts, cpu_type, "pauth", false);
 420     assert_set_feature(qts, cpu_type, "pauth", true);
 421     assert_set_feature(qts, cpu_type, "pauth-impdef", true);
 422     assert_set_feature(qts, cpu_type, "pauth-impdef", false);
 423     assert_error(qts, cpu_type, "cannot enable pauth-impdef without pauth",
 424                  "{ 'pauth': false, 'pauth-impdef': true }");
 425 }
 426
 427 static void test_query_cpu_model_expansion(const void *data)
 428 {
 429     QTestState *qts;
 430
 431     qts = qtest_init(MACHINE "-cpu max");
 432
 433     /* Test common query-cpu-model-expansion input validation */
 434     assert_type_full(qts);
 435     assert_bad_props(qts, "max");
 436     assert_error(qts, "foo", "The CPU type 'foo' is not a recognized "
 437                  "ARM CPU type", NULL);
 438     assert_error(qts, "max", "Parameter 'not-a-prop' is unexpected",
 439                  "{ 'not-a-prop': false }");
 440     assert_error(qts, "host", "The CPU type 'host' requires KVM", NULL);
 441
 442     /* Test expected feature presence/absence for some cpu types */
 443     assert_has_feature_enabled(qts, "cortex-a15", "pmu");
 444     assert_has_not_feature(qts, "cortex-a15", "aarch64");
 445
 446     /* Enabling and disabling pmu should always work. */
 447     assert_has_feature_enabled(qts, "max", "pmu");
 448     assert_set_feature(qts, "max", "pmu", false);
 449     assert_set_feature(qts, "max", "pmu", true);
 450
 451     assert_has_not_feature(qts, "max", "kvm-no-adjvtime");
 452     assert_has_not_feature(qts, "max", "kvm-steal-time");
 453
 454     if (g_str_equal(qtest_get_arch(), "aarch64")) {
 455         assert_has_feature_enabled(qts, "max", "aarch64");
 456         assert_has_feature_enabled(qts, "max", "sve");
 457         assert_has_feature_enabled(qts, "max", "sve128");
 458         assert_has_feature_enabled(qts, "cortex-a57", "pmu");
 459         assert_has_feature_enabled(qts, "cortex-a57", "aarch64");
 460
 461         assert_has_feature_enabled(qts, "a64fx", "pmu");
 462         assert_has_feature_enabled(qts, "a64fx", "aarch64");
 463         /*
 464          * A64FX does not support any other vector lengths besides those
 465          * that are enabled by default(128bit, 256bits, 512bit).
 466          */
 467         assert_has_feature_enabled(qts, "a64fx", "sve");
 468         assert_sve_vls(qts, "a64fx", 0xb, NULL);
 469         assert_error(qts, "a64fx", "cannot enable sve384",
 470                      "{ 'sve384': true }");
 471         assert_error(qts, "a64fx", "cannot enable sve640",
 472                      "{ 'sve640': true }");
 473
 474         sve_tests_default(qts, "max");
 475         pauth_tests_default(qts, "max");
 476
 477         /* Test that features that depend on KVM generate errors without. */
 478         assert_error(qts, "max",
 479                      "'aarch64' feature cannot be disabled "
 480                      "unless KVM is enabled and 32-bit EL1 "
 481                      "is supported",
 482                      "{ 'aarch64': false }");
 483     }
 484
 485     qtest_quit(qts);
 486 }
 487
 488 static void test_query_cpu_model_expansion_kvm(const void *data)
 489 {
 490     QTestState *qts;
 491
 492     qts = qtest_init(MACHINE_KVM "-cpu max");
 493
 494     /* Enabling and disabling kvm-no-adjvtime should always work. */
 495     assert_has_feature_disabled(qts, "host", "kvm-no-adjvtime");
 496     assert_set_feature(qts, "host", "kvm-no-adjvtime", true);
 497     assert_set_feature(qts, "host", "kvm-no-adjvtime", false);
 498
 499     if (g_str_equal(qtest_get_arch(), "aarch64")) {
 500         bool kvm_supports_steal_time;
 501         bool kvm_supports_sve;
 502         char max_name[8], name[8];
 503         uint32_t max_vq, vq;
 504         uint64_t vls;
 505         QDict *resp;
 506         char *error;
 507
 508         assert_error(qts, "cortex-a15",
 509             "We cannot guarantee the CPU type 'cortex-a15' works "
 510             "with KVM on this host", NULL);
 511
 512         assert_has_feature_enabled(qts, "host", "aarch64");
 513
 514         /* Enabling and disabling pmu should always work. */
 515         assert_has_feature_enabled(qts, "host", "pmu");
 516         assert_set_feature(qts, "host", "pmu", false);
 517         assert_set_feature(qts, "host", "pmu", true);
 518
 519         /*
 520          * Some features would be enabled by default, but they're disabled
 521          * because this instance of KVM doesn't support them. Test that the
 522          * features are present, and, when enabled, issue further tests.
 523          */
 524         assert_has_feature(qts, "host", "kvm-steal-time");
 525         assert_has_feature(qts, "host", "sve");
 526
 527         resp = do_query_no_props(qts, "host");
 528         kvm_supports_steal_time = resp_get_feature(resp, "kvm-steal-time");
 529         kvm_supports_sve = resp_get_feature(resp, "sve");
 530         vls = resp_get_sve_vls(resp);
 531         qobject_unref(resp);
 532
 533         if (kvm_supports_steal_time) {
 534             /* If we have steal-time then we should be able to toggle it. */
 535             assert_set_feature(qts, "host", "kvm-steal-time", false);
 536             assert_set_feature(qts, "host", "kvm-steal-time", true);
 537         }
 538
 539         if (kvm_supports_sve) {
 540             g_assert(vls != 0);
 541             max_vq = 64 - __builtin_clzll(vls);
 542             sprintf(max_name, "sve%u", max_vq * 128);
 543
 544             /* Enabling a supported length is of course fine. */
 545             assert_sve_vls(qts, "host", vls, "{ %s: true }", max_name);
 546
 547             /* Get the next supported length smaller than max-vq. */
 548             vq = 64 - __builtin_clzll(vls & ~BIT_ULL(max_vq - 1));
 549             if (vq) {
 550                 /*
 551                  * We have at least one length smaller than max-vq,
 552                  * so we can disable max-vq.
 553                  */
 554                 assert_sve_vls(qts, "host", (vls & ~BIT_ULL(max_vq - 1)),
 555                                "{ %s: false }", max_name);
 556
 557                 /*
 558                  * Smaller, supported vector lengths cannot be disabled
 559                  * unless all larger, supported vector lengths are also
 560                  * disabled.
 561                  */
 562                 sprintf(name, "sve%u", vq * 128);
 563                 error = g_strdup_printf("cannot disable %s", name);
 564                 assert_error(qts, "host", error,
 565                              "{ %s: true, %s: false }",
 566                              max_name, name);
 567                 g_free(error);
 568             }
 569
 570             /*
 571              * The smallest, supported vector length is required, because
 572              * we need at least one vector length enabled.
 573              */
 574             vq = __builtin_ffsll(vls);
 575             sprintf(name, "sve%u", vq * 128);
 576             error = g_strdup_printf("cannot disable %s", name);
 577             assert_error(qts, "host", error, "{ %s: false }", name);
 578             g_free(error);
 579
 580             /* Get an unsupported length. */
 581             for (vq = 1; vq <= max_vq; ++vq) {
 582                 if (!(vls & BIT_ULL(vq - 1))) {
 583                     break;
 584                 }
 585             }
 586             if (vq <= SVE_MAX_VQ) {
 587                 sprintf(name, "sve%u", vq * 128);
 588                 error = g_strdup_printf("cannot enable %s", name);
 589                 assert_error(qts, "host", error, "{ %s: true }", name);
 590                 g_free(error);
 591             }
 592         } else {
 593             g_assert(vls == 0);
 594         }
 595     } else {
 596         assert_has_not_feature(qts, "host", "aarch64");
 597         assert_has_not_feature(qts, "host", "pmu");
 598         assert_has_not_feature(qts, "host", "sve");
 599         assert_has_not_feature(qts, "host", "kvm-steal-time");
 600     }
 601
 602     qtest_quit(qts);
 603 }
 604
 605 int main(int argc, char **argv)
 606 {
 607     g_test_init(&argc, &argv, NULL);
 608
 609     qtest_add_data_func("/arm/query-cpu-model-expansion",
 610                         NULL, test_query_cpu_model_expansion);
 611
 612     /*
 613      * For now we only run KVM specific tests with AArch64 QEMU in
 614      * order avoid attempting to run an AArch32 QEMU with KVM on
 615      * AArch64 hosts. That won't work and isn't easy to detect.
 616      */
 617     if (g_str_equal(qtest_get_arch(), "aarch64") && qtest_has_accel("kvm")) {
 618         /*
 619          * This tests target the 'host' CPU type, so register it only if
 620          * KVM is available.
 621          */
 622         qtest_add_data_func("/arm/kvm/query-cpu-model-expansion",
 623                             NULL, test_query_cpu_model_expansion_kvm);
 624     }
 625
 626     if (g_str_equal(qtest_get_arch(), "aarch64")) {
 627         qtest_add_data_func("/arm/max/query-cpu-model-expansion/sve-max-vq-8",
 628                             NULL, sve_tests_sve_max_vq_8);
 629         qtest_add_data_func("/arm/max/query-cpu-model-expansion/sve-off",
 630                             NULL, sve_tests_sve_off);
 631         qtest_add_data_func("/arm/kvm/query-cpu-model-expansion/sve-off",
 632                             NULL, sve_tests_sve_off_kvm);
 633     }
 634
 635     return g_test_run();
 636 }