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-rw-r--r--target-s390x/cpu-qom.h3
-rw-r--r--target-s390x/cpu.c96
-rw-r--r--target-s390x/cpu.h2
-rw-r--r--target-s390x/helper.c41
4 files changed, 134 insertions, 8 deletions
diff --git a/target-s390x/cpu-qom.h b/target-s390x/cpu-qom.h
index 029a44af24..1c90933965 100644
--- a/target-s390x/cpu-qom.h
+++ b/target-s390x/cpu-qom.h
@@ -47,6 +47,8 @@ typedef struct S390CPUClass {
CPUClass parent_class;
/*< public >*/
+ int64_t next_cpu_id;
+
DeviceRealize parent_realize;
void (*parent_reset)(CPUState *cpu);
void (*load_normal)(CPUState *cpu);
@@ -66,6 +68,7 @@ typedef struct S390CPU {
/*< public >*/
CPUS390XState env;
+ int64_t id;
/* needed for live migration */
void *irqstate;
uint32_t irqstate_saved_size;
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index 73a910d2fa..1cbf70355d 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -30,8 +30,11 @@
#include "qemu/error-report.h"
#include "hw/hw.h"
#include "trace.h"
+#include "qapi/visitor.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/arch_init.h"
+#include "sysemu/sysemu.h"
+#include "hw/s390x/sclp.h"
#endif
#define CR0_RESET 0xE0UL
@@ -195,7 +198,39 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
+ S390CPU *cpu = S390_CPU(dev);
+ CPUS390XState *env = &cpu->env;
+ Error *err = NULL;
+
+#if !defined(CONFIG_USER_ONLY)
+ if (cpu->id >= max_cpus) {
+ error_setg(&err, "Unable to add CPU: %" PRIi64
+ ", max allowed: %d", cpu->id, max_cpus - 1);
+ goto out;
+ }
+#endif
+ if (cpu_exists(cpu->id)) {
+ error_setg(&err, "Unable to add CPU: %" PRIi64
+ ", it already exists", cpu->id);
+ goto out;
+ }
+ if (cpu->id != scc->next_cpu_id) {
+ error_setg(&err, "Unable to add CPU: %" PRIi64
+ ", The next available id is %" PRIi64, cpu->id,
+ scc->next_cpu_id);
+ goto out;
+ }
+
+ cpu_exec_init(cs, &err);
+ if (err != NULL) {
+ goto out;
+ }
+ scc->next_cpu_id++;
+#if !defined(CONFIG_USER_ONLY)
+ qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
+#endif
+ env->cpu_num = cpu->id;
s390_cpu_gdb_init(cs);
qemu_init_vcpu(cs);
#if !defined(CONFIG_USER_ONLY)
@@ -204,7 +239,55 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
cpu_reset(cs);
#endif
- scc->parent_realize(dev, errp);
+ scc->parent_realize(dev, &err);
+
+#if !defined(CONFIG_USER_ONLY)
+ if (dev->hotplugged) {
+ raise_irq_cpu_hotplug();
+ }
+#endif
+
+out:
+ error_propagate(errp, err);
+}
+
+static void s390x_cpu_get_id(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ S390CPU *cpu = S390_CPU(obj);
+ int64_t value = cpu->id;
+
+ visit_type_int(v, name, &value, errp);
+}
+
+static void s390x_cpu_set_id(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ S390CPU *cpu = S390_CPU(obj);
+ DeviceState *dev = DEVICE(obj);
+ const int64_t min = 0;
+ const int64_t max = UINT32_MAX;
+ Error *err = NULL;
+ int64_t value;
+
+ if (dev->realized) {
+ error_setg(errp, "Attempt to set property '%s' on '%s' after "
+ "it was realized", name, object_get_typename(obj));
+ return;
+ }
+
+ visit_type_int(v, name, &value, &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ if (value < min || value > max) {
+ error_setg(errp, "Property %s.%s doesn't take value %" PRId64
+ " (minimum: %" PRId64 ", maximum: %" PRId64 ")" ,
+ object_get_typename(obj), name, value, min, max);
+ return;
+ }
+ cpu->id = value;
}
static void s390_cpu_initfn(Object *obj)
@@ -213,15 +296,16 @@ static void s390_cpu_initfn(Object *obj)
S390CPU *cpu = S390_CPU(obj);
CPUS390XState *env = &cpu->env;
static bool inited;
- static int cpu_num = 0;
#if !defined(CONFIG_USER_ONLY)
struct tm tm;
#endif
cs->env_ptr = env;
- cpu_exec_init(cs, &error_abort);
+ cs->halted = 1;
+ cs->exception_index = EXCP_HLT;
+ object_property_add(OBJECT(cpu), "id", "int64_t", s390x_cpu_get_id,
+ s390x_cpu_set_id, NULL, NULL, NULL);
#if !defined(CONFIG_USER_ONLY)
- qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
qemu_get_timedate(&tm, 0);
env->tod_offset = TOD_UNIX_EPOCH +
(time2tod(mktimegm(&tm)) * 1000000000ULL);
@@ -230,7 +314,6 @@ static void s390_cpu_initfn(Object *obj)
env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
#endif
- env->cpu_num = cpu_num++;
if (tcg_enabled() && !inited) {
inited = true;
@@ -337,6 +420,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
CPUClass *cc = CPU_CLASS(scc);
DeviceClass *dc = DEVICE_CLASS(oc);
+ scc->next_cpu_id = 0;
scc->parent_realize = dc->realize;
dc->realize = s390_cpu_realizefn;
@@ -369,7 +453,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
cc->gdb_arch_name = s390_gdb_arch_name;
/*
- * Reason: s390_cpu_initfn() calls cpu_exec_init(), which saves
+ * Reason: s390_cpu_realizefn() calls cpu_exec_init(), which saves
* the object in cpus -> dangling pointer after final
* object_unref().
*/
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 49c84155be..6d97c089a4 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -413,6 +413,8 @@ void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen);
#endif
S390CPU *cpu_s390x_init(const char *cpu_model);
+S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
+S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp);
void s390x_translate_init(void);
int cpu_s390x_exec(CPUState *cpu);
diff --git a/target-s390x/helper.c b/target-s390x/helper.c
index 838bdd9e9e..76d5fbebe8 100644
--- a/target-s390x/helper.c
+++ b/target-s390x/helper.c
@@ -65,14 +65,51 @@ void s390x_cpu_timer(void *opaque)
}
#endif
-S390CPU *cpu_s390x_init(const char *cpu_model)
+S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp)
{
S390CPU *cpu;
cpu = S390_CPU(object_new(TYPE_S390_CPU));
- object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+ return cpu;
+}
+
+S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp)
+{
+ S390CPU *cpu;
+ Error *err = NULL;
+
+ cpu = cpu_s390x_create(cpu_model, &err);
+ if (err != NULL) {
+ goto out;
+ }
+
+ object_property_set_int(OBJECT(cpu), id, "id", &err);
+ if (err != NULL) {
+ goto out;
+ }
+ object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+out:
+ if (err) {
+ error_propagate(errp, err);
+ object_unref(OBJECT(cpu));
+ cpu = NULL;
+ }
+ return cpu;
+}
+
+S390CPU *cpu_s390x_init(const char *cpu_model)
+{
+ Error *err = NULL;
+ S390CPU *cpu;
+ /* Use to track CPU ID for linux-user only */
+ static int64_t next_cpu_id;
+
+ cpu = s390x_new_cpu(cpu_model, next_cpu_id++, &err);
+ if (err) {
+ error_report_err(err);
+ }
return cpu;
}
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-05 11:03:14 +0000