4 * Copyright 2016 IBM Corp.
6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
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
13 #include "qemu/osdep.h"
16 #include "kvm_s390x.h"
17 #include "sysemu/kvm.h"
18 #include "qapi/error.h"
19 #include "qapi/visitor.h"
20 #include "qemu/error-report.h"
21 #include "qapi/qmp/qerror.h"
22 #include "qapi/qobject-input-visitor.h"
23 #include "qapi/qmp/qdict.h"
24 #ifndef CONFIG_USER_ONLY
25 #include "sysemu/arch_init.h"
26 #include "hw/pci/pci.h"
29 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
35 .mha_pow = _mha_pow, \
38 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \
39 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \
40 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \
44 * CPU definiton list in order of release. For now, base features of a
45 * following release are always a subset of base features of the previous
46 * release. Same is correct for the other feature sets.
47 * A BC release always follows the corresponding EC release.
49 static S390CPUDef s390_cpu_defs
[] = {
50 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U
, "z900", "IBM zSeries 900 GA1"),
51 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U
, "z900.2", "IBM zSeries 900 GA2"),
52 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U
, "z900.3", "IBM zSeries 900 GA3"),
53 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U
, "z800", "IBM zSeries 800 GA1"),
54 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U
, "z990", "IBM zSeries 990 GA1"),
55 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U
, "z990.2", "IBM zSeries 990 GA2"),
56 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U
, "z990.3", "IBM zSeries 990 GA3"),
57 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U
, "z890", "IBM zSeries 880 GA1"),
58 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U
, "z990.4", "IBM zSeries 990 GA4"),
59 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U
, "z890.2", "IBM zSeries 880 GA2"),
60 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U
, "z990.5", "IBM zSeries 990 GA5"),
61 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U
, "z890.3", "IBM zSeries 880 GA3"),
62 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U
, "z9EC", "IBM System z9 EC GA1"),
63 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U
, "z9EC.2", "IBM System z9 EC GA2"),
64 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U
, "z9BC", "IBM System z9 BC GA1"),
65 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U
, "z9EC.3", "IBM System z9 EC GA3"),
66 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U
, "z9BC.2", "IBM System z9 BC GA2"),
67 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U
, "z10EC", "IBM System z10 EC GA1"),
68 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U
, "z10EC.2", "IBM System z10 EC GA2"),
69 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U
, "z10BC", "IBM System z10 BC GA1"),
70 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U
, "z10EC.3", "IBM System z10 EC GA3"),
71 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U
, "z10BC.2", "IBM System z10 BC GA2"),
72 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U
, "z196", "IBM zEnterprise 196 GA1"),
73 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U
, "z196.2", "IBM zEnterprise 196 GA2"),
74 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U
, "z114", "IBM zEnterprise 114 GA1"),
75 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U
, "zEC12", "IBM zEnterprise EC12 GA1"),
76 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U
, "zEC12.2", "IBM zEnterprise EC12 GA2"),
77 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U
, "zBC12", "IBM zEnterprise BC12 GA1"),
78 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U
, "z13", "IBM z13 GA1"),
79 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U
, "z13.2", "IBM z13 GA2"),
80 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U
, "z13s", "IBM z13s GA1"),
81 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U
, "z14", "IBM z14 GA1"),
84 #define QEMU_MAX_CPU_TYPE 0x2827
85 #define QEMU_MAX_CPU_GEN 12
86 #define QEMU_MAX_CPU_EC_GA 2
87 static const S390FeatInit qemu_max_cpu_feat_init
= { S390_FEAT_LIST_QEMU_MAX
};
88 static S390FeatBitmap qemu_max_cpu_feat
;
90 /* features part of a base model but not relevant for finding a base model */
91 S390FeatBitmap ignored_base_feat
;
93 void s390_cpudef_featoff(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
)
95 const S390CPUDef
*def
;
97 def
= s390_find_cpu_def(0, gen
, ec_ga
, NULL
);
98 clear_bit(feat
, (unsigned long *)&def
->default_feat
);
101 void s390_cpudef_featoff_greater(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
)
105 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
106 const S390CPUDef
*def
= &s390_cpu_defs
[i
];
108 if (def
->gen
< gen
) {
111 if (def
->gen
== gen
&& def
->ec_ga
< ec_ga
) {
115 clear_bit(feat
, (unsigned long *)&def
->default_feat
);
119 uint32_t s390_get_hmfai(void)
124 cpu
= S390_CPU(qemu_get_cpu(0));
127 if (!cpu
|| !cpu
->model
) {
130 return cpu
->model
->def
->hmfai
;
133 uint8_t s390_get_mha_pow(void)
138 cpu
= S390_CPU(qemu_get_cpu(0));
141 if (!cpu
|| !cpu
->model
) {
144 return cpu
->model
->def
->mha_pow
;
147 uint32_t s390_get_ibc_val(void)
149 uint16_t unblocked_ibc
, lowest_ibc
;
153 cpu
= S390_CPU(qemu_get_cpu(0));
156 if (!cpu
|| !cpu
->model
) {
159 unblocked_ibc
= s390_ibc_from_cpu_model(cpu
->model
);
160 lowest_ibc
= cpu
->model
->lowest_ibc
;
161 /* the lowest_ibc always has to be <= unblocked_ibc */
162 if (!lowest_ibc
|| lowest_ibc
> unblocked_ibc
) {
165 return ((uint32_t) lowest_ibc
<< 16) | unblocked_ibc
;
168 void s390_get_feat_block(S390FeatType type
, uint8_t *data
)
173 cpu
= S390_CPU(qemu_get_cpu(0));
176 if (!cpu
|| !cpu
->model
) {
179 s390_fill_feat_block(cpu
->model
->features
, type
, data
);
182 bool s390_has_feat(S390Feat feat
)
187 cpu
= S390_CPU(qemu_get_cpu(0));
190 if (!cpu
|| !cpu
->model
) {
193 if (feat
== S390_FEAT_VECTOR
) {
194 return kvm_check_extension(kvm_state
,
195 KVM_CAP_S390_VECTOR_REGISTERS
);
197 if (feat
== S390_FEAT_RUNTIME_INSTRUMENTATION
) {
198 return kvm_s390_get_ri();
200 if (feat
== S390_FEAT_MSA_EXT_3
) {
205 if (feat
== S390_FEAT_ZPCI
) {
210 return test_bit(feat
, cpu
->model
->features
);
213 uint8_t s390_get_gen_for_cpu_type(uint16_t type
)
217 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
218 if (s390_cpu_defs
[i
].type
== type
) {
219 return s390_cpu_defs
[i
].gen
;
225 const S390CPUDef
*s390_find_cpu_def(uint16_t type
, uint8_t gen
, uint8_t ec_ga
,
226 S390FeatBitmap features
)
228 const S390CPUDef
*last_compatible
= NULL
;
229 const S390CPUDef
*matching_cpu_type
= NULL
;
236 gen
= s390_get_gen_for_cpu_type(type
);
239 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
240 const S390CPUDef
*def
= &s390_cpu_defs
[i
];
241 S390FeatBitmap missing
;
243 /* don't even try newer generations if we know the generation */
245 if (def
->gen
> gen
) {
247 } else if (def
->gen
== gen
&& ec_ga
&& def
->ec_ga
> ec_ga
) {
253 /* see if the model satisfies the minimum features */
254 bitmap_andnot(missing
, def
->base_feat
, features
, S390_FEAT_MAX
);
256 * Ignore certain features that are in the base model, but not
257 * relevant for the search (esp. MSA subfunctions).
259 bitmap_andnot(missing
, missing
, ignored_base_feat
, S390_FEAT_MAX
);
260 if (!bitmap_empty(missing
, S390_FEAT_MAX
)) {
265 /* stop the search if we found the exact model */
266 if (def
->type
== type
&& def
->ec_ga
== ec_ga
) {
269 /* remember if we've at least seen one with the same cpu type */
270 if (def
->type
== type
) {
271 matching_cpu_type
= def
;
273 last_compatible
= def
;
275 /* prefer the model with the same cpu type, esp. don't take the BC for EC */
276 if (matching_cpu_type
) {
277 return matching_cpu_type
;
279 return last_compatible
;
282 static void s390_print_cpu_model_list_entry(gpointer data
, gpointer user_data
)
284 CPUListState
*s
= user_data
;
285 const S390CPUClass
*scc
= S390_CPU_CLASS((ObjectClass
*)data
);
286 char *name
= g_strdup(object_class_get_name((ObjectClass
*)data
));
287 const char *details
= "";
289 if (scc
->is_static
) {
290 details
= "(static, migration-safe)";
291 } else if (scc
->is_migration_safe
) {
292 details
= "(migration-safe)";
295 /* strip off the -s390x-cpu */
296 g_strrstr(name
, "-" TYPE_S390_CPU
)[0] = 0;
297 (*s
->cpu_fprintf
)(s
->file
, "s390 %-15s %-35s %s\n", name
, scc
->desc
,
302 static gint
s390_cpu_list_compare(gconstpointer a
, gconstpointer b
)
304 const S390CPUClass
*cc_a
= S390_CPU_CLASS((ObjectClass
*)a
);
305 const S390CPUClass
*cc_b
= S390_CPU_CLASS((ObjectClass
*)b
);
306 const char *name_a
= object_class_get_name((ObjectClass
*)a
);
307 const char *name_b
= object_class_get_name((ObjectClass
*)b
);
309 /* move qemu and host to the top of the list, qemu first, host second */
310 if (name_a
[0] == 'q') {
312 } else if (name_b
[0] == 'q') {
314 } else if (name_a
[0] == 'h') {
316 } else if (name_b
[0] == 'h') {
320 /* keep the same order we have in our table (sorted by release date) */
321 if (cc_a
->cpu_def
!= cc_b
->cpu_def
) {
322 return cc_a
->cpu_def
- cc_b
->cpu_def
;
325 /* exact same definition - list base model first */
326 return cc_a
->is_static
? -1 : 1;
329 void s390_cpu_list(FILE *f
, fprintf_function print
)
333 .cpu_fprintf
= print
,
339 list
= object_class_get_list(TYPE_S390_CPU
, false);
340 list
= g_slist_sort(list
, s390_cpu_list_compare
);
341 g_slist_foreach(list
, s390_print_cpu_model_list_entry
, &s
);
344 (*print
)(f
, "\nRecognized feature flags:\n");
345 for (feat
= 0; feat
< S390_FEAT_MAX
; feat
++) {
346 const S390FeatDef
*def
= s390_feat_def(feat
);
348 (*print
)(f
, "%-20s %-50s\n", def
->name
, def
->desc
);
351 (*print
)(f
, "\nRecognized feature groups:\n");
352 for (group
= 0; group
< S390_FEAT_GROUP_MAX
; group
++) {
353 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
355 (*print
)(f
, "%-20s %-50s\n", def
->name
, def
->desc
);
359 static S390CPUModel
*get_max_cpu_model(Error
**errp
);
361 #ifndef CONFIG_USER_ONLY
362 static void list_add_feat(const char *name
, void *opaque
);
364 static void check_unavailable_features(const S390CPUModel
*max_model
,
365 const S390CPUModel
*model
,
366 strList
**unavailable
)
368 S390FeatBitmap missing
;
370 /* check general model compatibility */
371 if (max_model
->def
->gen
< model
->def
->gen
||
372 (max_model
->def
->gen
== model
->def
->gen
&&
373 max_model
->def
->ec_ga
< model
->def
->ec_ga
)) {
374 list_add_feat("type", unavailable
);
377 /* detect missing features if any to properly report them */
378 bitmap_andnot(missing
, model
->features
, max_model
->features
,
380 if (!bitmap_empty(missing
, S390_FEAT_MAX
)) {
381 s390_feat_bitmap_to_ascii(missing
, unavailable
, list_add_feat
);
385 struct CpuDefinitionInfoListData
{
386 CpuDefinitionInfoList
*list
;
390 static void create_cpu_model_list(ObjectClass
*klass
, void *opaque
)
392 struct CpuDefinitionInfoListData
*cpu_list_data
= opaque
;
393 CpuDefinitionInfoList
**cpu_list
= &cpu_list_data
->list
;
394 CpuDefinitionInfoList
*entry
;
395 CpuDefinitionInfo
*info
;
396 char *name
= g_strdup(object_class_get_name(klass
));
397 S390CPUClass
*scc
= S390_CPU_CLASS(klass
);
399 /* strip off the -s390x-cpu */
400 g_strrstr(name
, "-" TYPE_S390_CPU
)[0] = 0;
401 info
= g_new0(CpuDefinitionInfo
, 1);
403 info
->has_migration_safe
= true;
404 info
->migration_safe
= scc
->is_migration_safe
;
405 info
->q_static
= scc
->is_static
;
406 info
->q_typename
= g_strdup(object_class_get_name(klass
));
407 /* check for unavailable features */
408 if (cpu_list_data
->model
) {
411 obj
= object_new(object_class_get_name(klass
));
414 info
->has_unavailable_features
= true;
415 check_unavailable_features(cpu_list_data
->model
, sc
->model
,
416 &info
->unavailable_features
);
421 entry
= g_new0(CpuDefinitionInfoList
, 1);
423 entry
->next
= *cpu_list
;
427 CpuDefinitionInfoList
*arch_query_cpu_definitions(Error
**errp
)
429 struct CpuDefinitionInfoListData list_data
= {
433 list_data
.model
= get_max_cpu_model(errp
);
439 object_class_foreach(create_cpu_model_list
, TYPE_S390_CPU
, false,
442 return list_data
.list
;
445 static void cpu_model_from_info(S390CPUModel
*model
, const CpuModelInfo
*info
,
448 const QDict
*qdict
= NULL
;
456 qdict
= qobject_to(QDict
, info
->props
);
458 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, "props", "dict");
463 oc
= cpu_class_by_name(TYPE_S390_CPU
, info
->name
);
465 error_setg(errp
, "The CPU definition \'%s\' is unknown.", info
->name
);
468 if (S390_CPU_CLASS(oc
)->kvm_required
&& !kvm_enabled()) {
469 error_setg(errp
, "The CPU definition '%s' requires KVM", info
->name
);
472 obj
= object_new(object_class_get_name(oc
));
476 error_setg(errp
, "Details about the host CPU model are not available, "
477 "it cannot be used.");
483 visitor
= qobject_input_visitor_new(info
->props
);
484 visit_start_struct(visitor
, NULL
, NULL
, 0, errp
);
489 for (e
= qdict_first(qdict
); e
; e
= qdict_next(qdict
, e
)) {
490 object_property_set(obj
, visitor
, e
->key
, errp
);
496 visit_check_struct(visitor
, errp
);
498 visit_end_struct(visitor
, NULL
);
506 /* copy the model and throw the cpu away */
507 memcpy(model
, cpu
->model
, sizeof(*model
));
511 static void qdict_add_disabled_feat(const char *name
, void *opaque
)
513 qdict_put_bool(opaque
, name
, false);
516 static void qdict_add_enabled_feat(const char *name
, void *opaque
)
518 qdict_put_bool(opaque
, name
, true);
521 /* convert S390CPUDef into a static CpuModelInfo */
522 static void cpu_info_from_model(CpuModelInfo
*info
, const S390CPUModel
*model
,
525 QDict
*qdict
= qdict_new();
526 S390FeatBitmap bitmap
;
528 /* always fallback to the static base model */
529 info
->name
= g_strdup_printf("%s-base", model
->def
->name
);
532 /* features deleted from the base feature set */
533 bitmap_andnot(bitmap
, model
->def
->base_feat
, model
->features
,
535 if (!bitmap_empty(bitmap
, S390_FEAT_MAX
)) {
536 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_disabled_feat
);
539 /* features added to the base feature set */
540 bitmap_andnot(bitmap
, model
->features
, model
->def
->base_feat
,
542 if (!bitmap_empty(bitmap
, S390_FEAT_MAX
)) {
543 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_enabled_feat
);
546 /* expand all features */
547 s390_feat_bitmap_to_ascii(model
->features
, qdict
,
548 qdict_add_enabled_feat
);
549 bitmap_complement(bitmap
, model
->features
, S390_FEAT_MAX
);
550 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_disabled_feat
);
553 if (!qdict_size(qdict
)) {
554 qobject_unref(qdict
);
556 info
->props
= QOBJECT(qdict
);
557 info
->has_props
= true;
561 CpuModelExpansionInfo
*arch_query_cpu_model_expansion(CpuModelExpansionType type
,
565 CpuModelExpansionInfo
*expansion_info
= NULL
;
566 S390CPUModel s390_model
;
567 bool delta_changes
= false;
569 /* convert it to our internal representation */
570 cpu_model_from_info(&s390_model
, model
, errp
);
575 if (type
== CPU_MODEL_EXPANSION_TYPE_STATIC
) {
576 delta_changes
= true;
577 } else if (type
!= CPU_MODEL_EXPANSION_TYPE_FULL
) {
578 error_setg(errp
, "The requested expansion type is not supported.");
582 /* convert it back to a static representation */
583 expansion_info
= g_new0(CpuModelExpansionInfo
, 1);
584 expansion_info
->model
= g_malloc0(sizeof(*expansion_info
->model
));
585 cpu_info_from_model(expansion_info
->model
, &s390_model
, delta_changes
);
586 return expansion_info
;
589 static void list_add_feat(const char *name
, void *opaque
)
591 strList
**last
= (strList
**) opaque
;
594 entry
= g_new0(strList
, 1);
595 entry
->value
= g_strdup(name
);
600 CpuModelCompareInfo
*arch_query_cpu_model_comparison(CpuModelInfo
*infoa
,
604 CpuModelCompareResult feat_result
, gen_result
;
605 CpuModelCompareInfo
*compare_info
;
606 S390FeatBitmap missing
, added
;
607 S390CPUModel modela
, modelb
;
609 /* convert both models to our internal representation */
610 cpu_model_from_info(&modela
, infoa
, errp
);
614 cpu_model_from_info(&modelb
, infob
, errp
);
618 compare_info
= g_new0(CpuModelCompareInfo
, 1);
620 /* check the cpu generation and ga level */
621 if (modela
.def
->gen
== modelb
.def
->gen
) {
622 if (modela
.def
->ec_ga
== modelb
.def
->ec_ga
) {
623 /* ec and corresponding bc are identical */
624 gen_result
= CPU_MODEL_COMPARE_RESULT_IDENTICAL
;
625 } else if (modela
.def
->ec_ga
< modelb
.def
->ec_ga
) {
626 gen_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
628 gen_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
630 } else if (modela
.def
->gen
< modelb
.def
->gen
) {
631 gen_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
633 gen_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
635 if (gen_result
!= CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
636 /* both models cannot be made identical */
637 list_add_feat("type", &compare_info
->responsible_properties
);
640 /* check the feature set */
641 if (bitmap_equal(modela
.features
, modelb
.features
, S390_FEAT_MAX
)) {
642 feat_result
= CPU_MODEL_COMPARE_RESULT_IDENTICAL
;
644 bitmap_andnot(missing
, modela
.features
, modelb
.features
, S390_FEAT_MAX
);
645 s390_feat_bitmap_to_ascii(missing
,
646 &compare_info
->responsible_properties
,
648 bitmap_andnot(added
, modelb
.features
, modela
.features
, S390_FEAT_MAX
);
649 s390_feat_bitmap_to_ascii(added
, &compare_info
->responsible_properties
,
651 if (bitmap_empty(missing
, S390_FEAT_MAX
)) {
652 feat_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
653 } else if (bitmap_empty(added
, S390_FEAT_MAX
)) {
654 feat_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
656 feat_result
= CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE
;
660 /* combine the results */
661 if (gen_result
== feat_result
) {
662 compare_info
->result
= gen_result
;
663 } else if (feat_result
== CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
664 compare_info
->result
= gen_result
;
665 } else if (gen_result
== CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
666 compare_info
->result
= feat_result
;
668 compare_info
->result
= CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE
;
673 CpuModelBaselineInfo
*arch_query_cpu_model_baseline(CpuModelInfo
*infoa
,
677 CpuModelBaselineInfo
*baseline_info
;
678 S390CPUModel modela
, modelb
, model
;
683 /* convert both models to our internal representation */
684 cpu_model_from_info(&modela
, infoa
, errp
);
689 cpu_model_from_info(&modelb
, infob
, errp
);
694 /* features both models support */
695 bitmap_and(model
.features
, modela
.features
, modelb
.features
, S390_FEAT_MAX
);
697 /* detect the maximum model not regarding features */
698 if (modela
.def
->gen
== modelb
.def
->gen
) {
699 if (modela
.def
->type
== modelb
.def
->type
) {
700 cpu_type
= modela
.def
->type
;
704 max_gen
= modela
.def
->gen
;
705 max_gen_ga
= MIN(modela
.def
->ec_ga
, modelb
.def
->ec_ga
);
706 } else if (modela
.def
->gen
> modelb
.def
->gen
) {
707 cpu_type
= modelb
.def
->type
;
708 max_gen
= modelb
.def
->gen
;
709 max_gen_ga
= modelb
.def
->ec_ga
;
711 cpu_type
= modela
.def
->type
;
712 max_gen
= modela
.def
->gen
;
713 max_gen_ga
= modela
.def
->ec_ga
;
716 model
.def
= s390_find_cpu_def(cpu_type
, max_gen
, max_gen_ga
,
718 /* strip off features not part of the max model */
719 bitmap_and(model
.features
, model
.features
, model
.def
->full_feat
,
722 baseline_info
= g_new0(CpuModelBaselineInfo
, 1);
723 baseline_info
->model
= g_malloc0(sizeof(*baseline_info
->model
));
724 cpu_info_from_model(baseline_info
->model
, &model
, true);
725 return baseline_info
;
729 static void check_consistency(const S390CPUModel
*model
)
731 static int dep
[][2] = {
732 { S390_FEAT_IPTE_RANGE
, S390_FEAT_DAT_ENH
},
733 { S390_FEAT_IDTE_SEGMENT
, S390_FEAT_DAT_ENH
},
734 { S390_FEAT_IDTE_REGION
, S390_FEAT_DAT_ENH
},
735 { S390_FEAT_IDTE_REGION
, S390_FEAT_IDTE_SEGMENT
},
736 { S390_FEAT_LOCAL_TLB_CLEARING
, S390_FEAT_DAT_ENH
},
737 { S390_FEAT_LONG_DISPLACEMENT_FAST
, S390_FEAT_LONG_DISPLACEMENT
},
738 { S390_FEAT_DFP_FAST
, S390_FEAT_DFP
},
739 { S390_FEAT_TRANSACTIONAL_EXE
, S390_FEAT_STFLE_49
},
740 { S390_FEAT_EDAT_2
, S390_FEAT_EDAT
},
741 { S390_FEAT_MSA_EXT_5
, S390_FEAT_KIMD_SHA_512
},
742 { S390_FEAT_MSA_EXT_5
, S390_FEAT_KLMD_SHA_512
},
743 { S390_FEAT_MSA_EXT_4
, S390_FEAT_MSA_EXT_3
},
744 { S390_FEAT_SIE_CMMA
, S390_FEAT_CMM
},
745 { S390_FEAT_SIE_CMMA
, S390_FEAT_SIE_GSLS
},
746 { S390_FEAT_SIE_PFMFI
, S390_FEAT_EDAT
},
747 { S390_FEAT_MSA_EXT_8
, S390_FEAT_MSA_EXT_3
},
748 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_TOD_CLOCK_STEERING
},
749 { S390_FEAT_VECTOR_PACKED_DECIMAL
, S390_FEAT_VECTOR
},
750 { S390_FEAT_VECTOR_ENH
, S390_FEAT_VECTOR
},
751 { S390_FEAT_INSTRUCTION_EXEC_PROT
, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
},
752 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
, S390_FEAT_ESOP
},
753 { S390_FEAT_CMM_NT
, S390_FEAT_CMM
},
754 { S390_FEAT_GUARDED_STORAGE
, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
},
755 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_STORE_CLOCK_FAST
},
756 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_TOD_CLOCK_STEERING
},
757 { S390_FEAT_SEMAPHORE_ASSIST
, S390_FEAT_STFLE_49
},
758 { S390_FEAT_KIMD_SHA3_224
, S390_FEAT_MSA
},
759 { S390_FEAT_KIMD_SHA3_256
, S390_FEAT_MSA
},
760 { S390_FEAT_KIMD_SHA3_384
, S390_FEAT_MSA
},
761 { S390_FEAT_KIMD_SHA3_512
, S390_FEAT_MSA
},
762 { S390_FEAT_KIMD_SHAKE_128
, S390_FEAT_MSA
},
763 { S390_FEAT_KIMD_SHAKE_256
, S390_FEAT_MSA
},
764 { S390_FEAT_KLMD_SHA3_224
, S390_FEAT_MSA
},
765 { S390_FEAT_KLMD_SHA3_256
, S390_FEAT_MSA
},
766 { S390_FEAT_KLMD_SHA3_384
, S390_FEAT_MSA
},
767 { S390_FEAT_KLMD_SHA3_512
, S390_FEAT_MSA
},
768 { S390_FEAT_KLMD_SHAKE_128
, S390_FEAT_MSA
},
769 { S390_FEAT_KLMD_SHAKE_256
, S390_FEAT_MSA
},
770 { S390_FEAT_PRNO_TRNG_QRTCR
, S390_FEAT_MSA_EXT_5
},
771 { S390_FEAT_PRNO_TRNG
, S390_FEAT_MSA_EXT_5
},
772 { S390_FEAT_SIE_KSS
, S390_FEAT_SIE_F2
},
776 for (i
= 0; i
< ARRAY_SIZE(dep
); i
++) {
777 if (test_bit(dep
[i
][0], model
->features
) &&
778 !test_bit(dep
[i
][1], model
->features
)) {
779 warn_report("\'%s\' requires \'%s\'.",
780 s390_feat_def(dep
[i
][0])->name
,
781 s390_feat_def(dep
[i
][1])->name
);
786 static void error_prepend_missing_feat(const char *name
, void *opaque
)
788 error_prepend((Error
**) opaque
, "%s ", name
);
791 static void check_compatibility(const S390CPUModel
*max_model
,
792 const S390CPUModel
*model
, Error
**errp
)
794 S390FeatBitmap missing
;
796 if (model
->def
->gen
> max_model
->def
->gen
) {
797 error_setg(errp
, "Selected CPU generation is too new. Maximum "
798 "supported model in the configuration: \'%s\'",
799 max_model
->def
->name
);
801 } else if (model
->def
->gen
== max_model
->def
->gen
&&
802 model
->def
->ec_ga
> max_model
->def
->ec_ga
) {
803 error_setg(errp
, "Selected CPU GA level is too new. Maximum "
804 "supported model in the configuration: \'%s\'",
805 max_model
->def
->name
);
809 /* detect the missing features to properly report them */
810 bitmap_andnot(missing
, model
->features
, max_model
->features
, S390_FEAT_MAX
);
811 if (bitmap_empty(missing
, S390_FEAT_MAX
)) {
815 error_setg(errp
, " ");
816 s390_feat_bitmap_to_ascii(missing
, errp
, error_prepend_missing_feat
);
817 error_prepend(errp
, "Some features requested in the CPU model are not "
818 "available in the configuration: ");
821 static S390CPUModel
*get_max_cpu_model(Error
**errp
)
823 static S390CPUModel max_model
;
831 kvm_s390_get_host_cpu_model(&max_model
, errp
);
833 max_model
.def
= s390_find_cpu_def(QEMU_MAX_CPU_TYPE
, QEMU_MAX_CPU_GEN
,
834 QEMU_MAX_CPU_EC_GA
, NULL
);
835 bitmap_copy(max_model
.features
, qemu_max_cpu_feat
, S390_FEAT_MAX
);
844 static inline void apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
846 #ifndef CONFIG_USER_ONLY
847 static S390CPUModel applied_model
;
851 * We have the same model for all VCPUs. KVM can only be configured before
852 * any VCPUs are defined in KVM.
855 if (model
&& memcmp(&applied_model
, model
, sizeof(S390CPUModel
))) {
856 error_setg(errp
, "Mixed CPU models are not supported on s390x.");
862 kvm_s390_apply_cpu_model(model
, errp
);
868 applied_model
= *model
;
874 void s390_realize_cpu_model(CPUState
*cs
, Error
**errp
)
876 S390CPUClass
*xcc
= S390_CPU_GET_CLASS(cs
);
877 S390CPU
*cpu
= S390_CPU(cs
);
878 const S390CPUModel
*max_model
;
880 if (xcc
->kvm_required
&& !kvm_enabled()) {
881 error_setg(errp
, "CPU definition requires KVM");
886 /* no host model support -> perform compatibility stuff */
887 apply_cpu_model(NULL
, errp
);
891 max_model
= get_max_cpu_model(errp
);
893 error_prepend(errp
, "CPU models are not available: ");
897 /* copy over properties that can vary */
898 cpu
->model
->lowest_ibc
= max_model
->lowest_ibc
;
899 cpu
->model
->cpu_id
= max_model
->cpu_id
;
900 cpu
->model
->cpu_id_format
= max_model
->cpu_id_format
;
901 cpu
->model
->cpu_ver
= max_model
->cpu_ver
;
903 check_consistency(cpu
->model
);
904 check_compatibility(max_model
, cpu
->model
, errp
);
909 apply_cpu_model(cpu
->model
, errp
);
911 #if !defined(CONFIG_USER_ONLY)
912 cpu
->env
.cpuid
= s390_cpuid_from_cpu_model(cpu
->model
);
914 /* basic mode, write the cpu address into the first 4 bit of the ID */
915 cpu
->env
.cpuid
= deposit64(cpu
->env
.cpuid
, 54, 4, cpu
->env
.core_id
);
920 static void get_feature(Object
*obj
, Visitor
*v
, const char *name
,
921 void *opaque
, Error
**errp
)
923 S390Feat feat
= (S390Feat
) opaque
;
924 S390CPU
*cpu
= S390_CPU(obj
);
928 error_setg(errp
, "Details about the host CPU model are not available, "
929 "features cannot be queried.");
933 value
= test_bit(feat
, cpu
->model
->features
);
934 visit_type_bool(v
, name
, &value
, errp
);
937 static void set_feature(Object
*obj
, Visitor
*v
, const char *name
,
938 void *opaque
, Error
**errp
)
940 S390Feat feat
= (S390Feat
) opaque
;
941 DeviceState
*dev
= DEVICE(obj
);
942 S390CPU
*cpu
= S390_CPU(obj
);
946 error_setg(errp
, "Attempt to set property '%s' on '%s' after "
947 "it was realized", name
, object_get_typename(obj
));
949 } else if (!cpu
->model
) {
950 error_setg(errp
, "Details about the host CPU model are not available, "
951 "features cannot be changed.");
955 visit_type_bool(v
, name
, &value
, errp
);
960 if (!test_bit(feat
, cpu
->model
->def
->full_feat
)) {
961 error_setg(errp
, "Feature '%s' is not available for CPU model '%s',"
962 " it was introduced with later models.",
963 name
, cpu
->model
->def
->name
);
966 set_bit(feat
, cpu
->model
->features
);
968 clear_bit(feat
, cpu
->model
->features
);
972 static void get_feature_group(Object
*obj
, Visitor
*v
, const char *name
,
973 void *opaque
, Error
**errp
)
975 S390FeatGroup group
= (S390FeatGroup
) opaque
;
976 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
977 S390CPU
*cpu
= S390_CPU(obj
);
982 error_setg(errp
, "Details about the host CPU model are not available, "
983 "features cannot be queried.");
987 /* a group is enabled if all features are enabled */
988 bitmap_and(tmp
, cpu
->model
->features
, def
->feat
, S390_FEAT_MAX
);
989 value
= bitmap_equal(tmp
, def
->feat
, S390_FEAT_MAX
);
990 visit_type_bool(v
, name
, &value
, errp
);
993 static void set_feature_group(Object
*obj
, Visitor
*v
, const char *name
,
994 void *opaque
, Error
**errp
)
996 S390FeatGroup group
= (S390FeatGroup
) opaque
;
997 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
998 DeviceState
*dev
= DEVICE(obj
);
999 S390CPU
*cpu
= S390_CPU(obj
);
1002 if (dev
->realized
) {
1003 error_setg(errp
, "Attempt to set property '%s' on '%s' after "
1004 "it was realized", name
, object_get_typename(obj
));
1006 } else if (!cpu
->model
) {
1007 error_setg(errp
, "Details about the host CPU model are not available, "
1008 "features cannot be changed.");
1012 visit_type_bool(v
, name
, &value
, errp
);
1017 /* groups are added in one shot, so an intersect is sufficient */
1018 if (!bitmap_intersects(def
->feat
, cpu
->model
->def
->full_feat
,
1020 error_setg(errp
, "Group '%s' is not available for CPU model '%s',"
1021 " it was introduced with later models.",
1022 name
, cpu
->model
->def
->name
);
1025 bitmap_or(cpu
->model
->features
, cpu
->model
->features
, def
->feat
,
1028 bitmap_andnot(cpu
->model
->features
, cpu
->model
->features
, def
->feat
,
1033 void s390_cpu_model_register_props(Object
*obj
)
1035 S390FeatGroup group
;
1038 for (feat
= 0; feat
< S390_FEAT_MAX
; feat
++) {
1039 const S390FeatDef
*def
= s390_feat_def(feat
);
1040 object_property_add(obj
, def
->name
, "bool", get_feature
,
1041 set_feature
, NULL
, (void *) feat
, NULL
);
1042 object_property_set_description(obj
, def
->name
, def
->desc
, NULL
);
1044 for (group
= 0; group
< S390_FEAT_GROUP_MAX
; group
++) {
1045 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
1046 object_property_add(obj
, def
->name
, "bool", get_feature_group
,
1047 set_feature_group
, NULL
, (void *) group
, NULL
);
1048 object_property_set_description(obj
, def
->name
, def
->desc
, NULL
);
1052 static void s390_cpu_model_initfn(Object
*obj
)
1054 S390CPU
*cpu
= S390_CPU(obj
);
1055 S390CPUClass
*xcc
= S390_CPU_GET_CLASS(cpu
);
1057 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1058 /* copy the model, so we can modify it */
1059 cpu
->model
->def
= xcc
->cpu_def
;
1060 if (xcc
->is_static
) {
1061 /* base model - features will never change */
1062 bitmap_copy(cpu
->model
->features
, cpu
->model
->def
->base_feat
,
1065 /* latest model - features can change */
1066 bitmap_copy(cpu
->model
->features
,
1067 cpu
->model
->def
->default_feat
, S390_FEAT_MAX
);
1072 static void s390_host_cpu_model_initfn(Object
*obj
)
1074 S390CPU
*cpu
= S390_CPU(obj
);
1077 if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1081 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1082 kvm_s390_get_host_cpu_model(cpu
->model
, &err
);
1084 error_report_err(err
);
1086 /* fallback to unsupported cpu models */
1092 static S390CPUDef s390_qemu_cpu_def
;
1093 static S390CPUModel s390_qemu_cpu_model
;
1095 /* Set the qemu CPU model (on machine initialization). Must not be called
1096 * once CPUs have been created.
1098 void s390_set_qemu_cpu_model(uint16_t type
, uint8_t gen
, uint8_t ec_ga
,
1099 const S390FeatInit feat_init
)
1101 const S390CPUDef
*def
= s390_find_cpu_def(type
, gen
, ec_ga
, NULL
);
1104 g_assert(QTAILQ_EMPTY(&cpus
));
1106 /* TCG emulates some features that can usually not be enabled with
1107 * the emulated machine generation. Make sure they can be enabled
1108 * when using the QEMU model by adding them to full_feat. We have
1109 * to copy the definition to do that.
1111 memcpy(&s390_qemu_cpu_def
, def
, sizeof(s390_qemu_cpu_def
));
1112 bitmap_or(s390_qemu_cpu_def
.full_feat
, s390_qemu_cpu_def
.full_feat
,
1113 qemu_max_cpu_feat
, S390_FEAT_MAX
);
1115 /* build the CPU model */
1116 s390_qemu_cpu_model
.def
= &s390_qemu_cpu_def
;
1117 bitmap_zero(s390_qemu_cpu_model
.features
, S390_FEAT_MAX
);
1118 s390_init_feat_bitmap(feat_init
, s390_qemu_cpu_model
.features
);
1121 static void s390_qemu_cpu_model_initfn(Object
*obj
)
1123 S390CPU
*cpu
= S390_CPU(obj
);
1125 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1126 /* copy the CPU model so we can modify it */
1127 memcpy(cpu
->model
, &s390_qemu_cpu_model
, sizeof(*cpu
->model
));
1130 static void s390_cpu_model_finalize(Object
*obj
)
1132 S390CPU
*cpu
= S390_CPU(obj
);
1138 static bool get_is_migration_safe(Object
*obj
, Error
**errp
)
1140 return S390_CPU_GET_CLASS(obj
)->is_migration_safe
;
1143 static bool get_is_static(Object
*obj
, Error
**errp
)
1145 return S390_CPU_GET_CLASS(obj
)->is_static
;
1148 static char *get_description(Object
*obj
, Error
**errp
)
1150 return g_strdup(S390_CPU_GET_CLASS(obj
)->desc
);
1153 void s390_cpu_model_class_register_props(ObjectClass
*oc
)
1155 object_class_property_add_bool(oc
, "migration-safe", get_is_migration_safe
,
1157 object_class_property_add_bool(oc
, "static", get_is_static
,
1159 object_class_property_add_str(oc
, "description", get_description
, NULL
,
1164 static void s390_host_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1166 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1168 xcc
->kvm_required
= true;
1169 xcc
->desc
= "KVM only: All recognized features";
1173 static void s390_base_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1175 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1177 /* all base models are migration safe */
1178 xcc
->cpu_def
= (const S390CPUDef
*) data
;
1179 xcc
->is_migration_safe
= true;
1180 xcc
->is_static
= true;
1181 xcc
->desc
= xcc
->cpu_def
->desc
;
1184 static void s390_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1186 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1188 /* model that can change between QEMU versions */
1189 xcc
->cpu_def
= (const S390CPUDef
*) data
;
1190 xcc
->is_migration_safe
= true;
1191 xcc
->desc
= xcc
->cpu_def
->desc
;
1194 static void s390_qemu_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1196 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1198 xcc
->is_migration_safe
= true;
1199 xcc
->desc
= g_strdup_printf("QEMU Virtual CPU version %s",
1203 /* Generate type name for a cpu model. Caller has to free the string. */
1204 static char *s390_cpu_type_name(const char *model_name
)
1206 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name
);
1209 /* Generate type name for a base cpu model. Caller has to free the string. */
1210 static char *s390_base_cpu_type_name(const char *model_name
)
1212 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name
);
1215 ObjectClass
*s390_cpu_class_by_name(const char *name
)
1217 char *typename
= s390_cpu_type_name(name
);
1220 oc
= object_class_by_name(typename
);
1225 static const TypeInfo qemu_s390_cpu_type_info
= {
1226 .name
= S390_CPU_TYPE_NAME("qemu"),
1227 .parent
= TYPE_S390_CPU
,
1228 .instance_init
= s390_qemu_cpu_model_initfn
,
1229 .instance_finalize
= s390_cpu_model_finalize
,
1230 .class_init
= s390_qemu_cpu_model_class_init
,
1234 static const TypeInfo host_s390_cpu_type_info
= {
1235 .name
= S390_CPU_TYPE_NAME("host"),
1236 .parent
= TYPE_S390_CPU
,
1237 .instance_init
= s390_host_cpu_model_initfn
,
1238 .instance_finalize
= s390_cpu_model_finalize
,
1239 .class_init
= s390_host_cpu_model_class_init
,
1243 static void init_ignored_base_feat(void)
1245 static const int feats
[] = {
1246 /* MSA subfunctions that could not be available on certain machines */
1248 S390_FEAT_KMAC_TDEA_128
,
1249 S390_FEAT_KMAC_TDEA_192
,
1251 S390_FEAT_KMC_TDEA_128
,
1252 S390_FEAT_KMC_TDEA_192
,
1254 S390_FEAT_KM_TDEA_128
,
1255 S390_FEAT_KM_TDEA_192
,
1256 S390_FEAT_KIMD_SHA_1
,
1257 S390_FEAT_KLMD_SHA_1
,
1261 for (i
= 0; i
< ARRAY_SIZE(feats
); i
++) {
1262 set_bit(feats
[i
], ignored_base_feat
);
1266 static void register_types(void)
1268 static const S390FeatInit qemu_latest_init
= { S390_FEAT_LIST_QEMU_LATEST
};
1271 init_ignored_base_feat();
1273 /* init all bitmaps from gnerated data initially */
1274 s390_init_feat_bitmap(qemu_max_cpu_feat_init
, qemu_max_cpu_feat
);
1275 #ifndef CONFIG_USER_ONLY
1276 if (!pci_available
) {
1277 clear_bit(S390_FEAT_ZPCI
, qemu_max_cpu_feat
);
1280 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
1281 s390_init_feat_bitmap(s390_cpu_defs
[i
].base_init
,
1282 s390_cpu_defs
[i
].base_feat
);
1283 s390_init_feat_bitmap(s390_cpu_defs
[i
].default_init
,
1284 s390_cpu_defs
[i
].default_feat
);
1285 s390_init_feat_bitmap(s390_cpu_defs
[i
].full_init
,
1286 s390_cpu_defs
[i
].full_feat
);
1289 /* initialize the qemu model with latest definition */
1290 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE
, QEMU_MAX_CPU_GEN
,
1291 QEMU_MAX_CPU_EC_GA
, qemu_latest_init
);
1293 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
1294 char *base_name
= s390_base_cpu_type_name(s390_cpu_defs
[i
].name
);
1295 TypeInfo ti_base
= {
1297 .parent
= TYPE_S390_CPU
,
1298 .instance_init
= s390_cpu_model_initfn
,
1299 .instance_finalize
= s390_cpu_model_finalize
,
1300 .class_init
= s390_base_cpu_model_class_init
,
1301 .class_data
= (void *) &s390_cpu_defs
[i
],
1303 char *name
= s390_cpu_type_name(s390_cpu_defs
[i
].name
);
1306 .parent
= TYPE_S390_CPU
,
1307 .instance_init
= s390_cpu_model_initfn
,
1308 .instance_finalize
= s390_cpu_model_finalize
,
1309 .class_init
= s390_cpu_model_class_init
,
1310 .class_data
= (void *) &s390_cpu_defs
[i
],
1313 type_register_static(&ti_base
);
1314 type_register_static(&ti
);
1319 type_register_static(&qemu_s390_cpu_type_info
);
1321 type_register_static(&host_s390_cpu_type_info
);
1325 type_init(register_types
)