*/
CPUState *qemu_get_cpu(int index);
+/**
+ * cpu_exists:
+ * @id: Guest-exposed CPU ID to lookup.
+ *
+ * Search for CPU with specified ID.
+ *
+ * Returns: %true - CPU is found, %false - CPU isn't found.
+ */
+bool cpu_exists(int64_t id);
+
#ifndef CONFIG_USER_ONLY
typedef void (*CPUInterruptHandler)(CPUState *, int);
#include "qemu/notify.h"
#include "sysemu/sysemu.h"
+typedef struct CPUExistsArgs {
+ int64_t id;
+ bool found;
+} CPUExistsArgs;
+
+static void cpu_exist_cb(CPUState *cpu, void *data)
+{
+ CPUClass *klass = CPU_GET_CLASS(cpu);
+ CPUExistsArgs *arg = data;
+
+ if (klass->get_arch_id(cpu) == arg->id) {
+ arg->found = true;
+ }
+}
+
+bool cpu_exists(int64_t id)
+{
+ CPUExistsArgs data = {
+ .id = id,
+ .found = false,
+ };
+
+ qemu_for_each_cpu(cpu_exist_cb, &data);
+ return data.found;
+}
+
/* CPU hot-plug notifiers */
static NotifierList cpu_added_notifiers =
NOTIFIER_LIST_INITIALIZER(cpu_add_notifiers);