1 /* 2 * QMP commands related to machines and CPUs 3 * 4 * Copyright (C) 2014 Red Hat Inc 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "hw/boards.h" 12 #include "qapi/error.h" 13 #include "qapi/qapi-builtin-visit.h" 14 #include "qapi/qapi-commands-machine.h" 15 #include "qapi/qmp/qerror.h" 16 #include "qapi/qmp/qobject.h" 17 #include "qapi/qobject-input-visitor.h" 18 #include "qemu/main-loop.h" 19 #include "qom/qom-qobject.h" 20 #include "sysemu/hostmem.h" 21 #include "sysemu/hw_accel.h" 22 #include "sysemu/numa.h" 23 #include "sysemu/runstate.h" 24 25 static void cpustate_to_cpuinfo_s390(CpuInfoS390 *info, const CPUState *cpu) 26 { 27 #ifdef TARGET_S390X 28 S390CPU *s390_cpu = S390_CPU(cpu); 29 CPUS390XState *env = &s390_cpu->env; 30 31 info->cpu_state = env->cpu_state; 32 #else 33 abort(); 34 #endif 35 } 36 37 /* 38 * fast means: we NEVER interrupt vCPU threads to retrieve 39 * information from KVM. 40 */ 41 CpuInfoFastList *qmp_query_cpus_fast(Error **errp) 42 { 43 MachineState *ms = MACHINE(qdev_get_machine()); 44 MachineClass *mc = MACHINE_GET_CLASS(ms); 45 CpuInfoFastList *head = NULL, **tail = &head; 46 SysEmuTarget target = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, 47 -1, &error_abort); 48 CPUState *cpu; 49 50 CPU_FOREACH(cpu) { 51 CpuInfoFast *value = g_malloc0(sizeof(*value)); 52 53 value->cpu_index = cpu->cpu_index; 54 value->qom_path = object_get_canonical_path(OBJECT(cpu)); 55 value->thread_id = cpu->thread_id; 56 57 value->has_props = !!mc->cpu_index_to_instance_props; 58 if (value->has_props) { 59 CpuInstanceProperties *props; 60 props = g_malloc0(sizeof(*props)); 61 *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index); 62 value->props = props; 63 } 64 65 value->target = target; 66 if (target == SYS_EMU_TARGET_S390X) { 67 cpustate_to_cpuinfo_s390(&value->u.s390x, cpu); 68 } 69 70 QAPI_LIST_APPEND(tail, value); 71 } 72 73 return head; 74 } 75 76 MachineInfoList *qmp_query_machines(Error **errp) 77 { 78 GSList *el, *machines = object_class_get_list(TYPE_MACHINE, false); 79 MachineInfoList *mach_list = NULL; 80 81 for (el = machines; el; el = el->next) { 82 MachineClass *mc = el->data; 83 MachineInfo *info; 84 85 info = g_malloc0(sizeof(*info)); 86 if (mc->is_default) { 87 info->has_is_default = true; 88 info->is_default = true; 89 } 90 91 if (mc->alias) { 92 info->has_alias = true; 93 info->alias = g_strdup(mc->alias); 94 } 95 96 info->name = g_strdup(mc->name); 97 info->cpu_max = !mc->max_cpus ? 1 : mc->max_cpus; 98 info->hotpluggable_cpus = mc->has_hotpluggable_cpus; 99 info->numa_mem_supported = mc->numa_mem_supported; 100 info->deprecated = !!mc->deprecation_reason; 101 if (mc->default_cpu_type) { 102 info->default_cpu_type = g_strdup(mc->default_cpu_type); 103 info->has_default_cpu_type = true; 104 } 105 if (mc->default_ram_id) { 106 info->default_ram_id = g_strdup(mc->default_ram_id); 107 info->has_default_ram_id = true; 108 } 109 110 QAPI_LIST_PREPEND(mach_list, info); 111 } 112 113 g_slist_free(machines); 114 return mach_list; 115 } 116 117 CurrentMachineParams *qmp_query_current_machine(Error **errp) 118 { 119 CurrentMachineParams *params = g_malloc0(sizeof(*params)); 120 params->wakeup_suspend_support = qemu_wakeup_suspend_enabled(); 121 122 return params; 123 } 124 125 TargetInfo *qmp_query_target(Error **errp) 126 { 127 TargetInfo *info = g_malloc0(sizeof(*info)); 128 129 info->arch = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, -1, 130 &error_abort); 131 132 return info; 133 } 134 135 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp) 136 { 137 MachineState *ms = MACHINE(qdev_get_machine()); 138 MachineClass *mc = MACHINE_GET_CLASS(ms); 139 140 if (!mc->has_hotpluggable_cpus) { 141 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus"); 142 return NULL; 143 } 144 145 return machine_query_hotpluggable_cpus(ms); 146 } 147 148 void qmp_set_numa_node(NumaOptions *cmd, Error **errp) 149 { 150 if (phase_check(PHASE_MACHINE_INITIALIZED)) { 151 error_setg(errp, "The command is permitted only before the machine has been created"); 152 return; 153 } 154 155 set_numa_options(MACHINE(qdev_get_machine()), cmd, errp); 156 } 157 158 static int query_memdev(Object *obj, void *opaque) 159 { 160 Error *err = NULL; 161 MemdevList **list = opaque; 162 Memdev *m; 163 QObject *host_nodes; 164 Visitor *v; 165 166 if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) { 167 m = g_malloc0(sizeof(*m)); 168 169 m->id = g_strdup(object_get_canonical_path_component(obj)); 170 m->has_id = !!m->id; 171 172 m->size = object_property_get_uint(obj, "size", &error_abort); 173 m->merge = object_property_get_bool(obj, "merge", &error_abort); 174 m->dump = object_property_get_bool(obj, "dump", &error_abort); 175 m->prealloc = object_property_get_bool(obj, "prealloc", &error_abort); 176 m->share = object_property_get_bool(obj, "share", &error_abort); 177 m->reserve = object_property_get_bool(obj, "reserve", &err); 178 if (err) { 179 error_free_or_abort(&err); 180 } else { 181 m->has_reserve = true; 182 } 183 m->policy = object_property_get_enum(obj, "policy", "HostMemPolicy", 184 &error_abort); 185 host_nodes = object_property_get_qobject(obj, 186 "host-nodes", 187 &error_abort); 188 v = qobject_input_visitor_new(host_nodes); 189 visit_type_uint16List(v, NULL, &m->host_nodes, &error_abort); 190 visit_free(v); 191 qobject_unref(host_nodes); 192 193 QAPI_LIST_PREPEND(*list, m); 194 } 195 196 return 0; 197 } 198 199 MemdevList *qmp_query_memdev(Error **errp) 200 { 201 Object *obj = object_get_objects_root(); 202 MemdevList *list = NULL; 203 204 object_child_foreach(obj, query_memdev, &list); 205 return list; 206 } 207