[Qemu-devel] [RFC PATCH v0 2/8] cpu: Don't realize CPU from cpu_generic_init()

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

Don't do CPU realization from cpu_generic_init(). With this
cpu_generic_init() will be used to just create CPU threads and they
should be realized separately from realizefn call.

Convert the existing callers to do explicit realization.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
---
 qom/cpu.c                   |  6 ------
 target-arm/helper.c         | 16 +++++++++++++++-
 target-cris/cpu.c           | 16 +++++++++++++++-
 target-lm32/helper.c        | 16 +++++++++++++++-
 target-moxie/cpu.c          | 16 +++++++++++++++-
 target-openrisc/cpu.c       | 16 +++++++++++++++-
 target-ppc/translate_init.c | 16 +++++++++++++++-
 target-sh4/cpu.c            | 16 +++++++++++++++-
 target-tricore/helper.c     | 16 +++++++++++++++-
 target-unicore32/helper.c   | 16 +++++++++++++++-
 10 files changed, 135 insertions(+), 15 deletions(-)

diff --git a/qom/cpu.c b/qom/cpu.c
index 38dc713..c0211fa 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -64,13 +64,7 @@ CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
     featurestr = strtok(NULL, ",");
     cc->parse_features(cpu, featurestr, &err);
     g_free(str);
-    if (err != NULL) {
-        goto out;
-    }
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
 
-out:
     if (err != NULL) {
         error_report_err(err);
         object_unref(OBJECT(cpu));
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 5ea507f..d76c55c 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -4564,7 +4564,21 @@ void register_cp_regs_for_features(ARMCPU *cpu)
 
 ARMCPU *cpu_arm_init(const char *cpu_model)
 {
-    return ARM_CPU(cpu_generic_init(TYPE_ARM_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_ARM_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return ARM_CPU(cpu);
+    }
 }
 
 void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
diff --git a/target-cris/cpu.c b/target-cris/cpu.c
index b2c8624..82f0ce5 100644
--- a/target-cris/cpu.c
+++ b/target-cris/cpu.c
@@ -90,7 +90,21 @@ static ObjectClass *cris_cpu_class_by_name(const char *cpu_model)
 
 CRISCPU *cpu_cris_init(const char *cpu_model)
 {
-    return CRIS_CPU(cpu_generic_init(TYPE_CRIS_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_CRIS_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return CRIS_CPU(cpu);
+    }
 }
 
 /* Sort alphabetically by VR. */
diff --git a/target-lm32/helper.c b/target-lm32/helper.c
index 655248f..4080496 100644
--- a/target-lm32/helper.c
+++ b/target-lm32/helper.c
@@ -220,7 +220,21 @@ bool lm32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 
 LM32CPU *cpu_lm32_init(const char *cpu_model)
 {
-    return LM32_CPU(cpu_generic_init(TYPE_LM32_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_LM32_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return LM32_CPU(cpu);
+    }
 }
 
 /* Some soc ignores the MSB on the address bus. Thus creating a shadow memory
diff --git a/target-moxie/cpu.c b/target-moxie/cpu.c
index b33c2b3..95fc3d0 100644
--- a/target-moxie/cpu.c
+++ b/target-moxie/cpu.c
@@ -153,7 +153,21 @@ static const MoxieCPUInfo moxie_cpus[] = {
 
 MoxieCPU *cpu_moxie_init(const char *cpu_model)
 {
-    return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_MOXIE_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return MOXIE_CPU(cpu);
+    }
 }
 
 static void cpu_register(const MoxieCPUInfo *info)
diff --git a/target-openrisc/cpu.c b/target-openrisc/cpu.c
index cafc07f..e82bcfc 100644
--- a/target-openrisc/cpu.c
+++ b/target-openrisc/cpu.c
@@ -223,7 +223,21 @@ static void openrisc_cpu_register_types(void)
 
 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model)
 {
-    return OPENRISC_CPU(cpu_generic_init(TYPE_OPENRISC_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_OPENRISC_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return OPENRISC_CPU(cpu);
+    }
 }
 
 /* Sort alphabetically by type name, except for "any". */
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index cdd18ac..a577bec 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -9458,7 +9458,21 @@ static ObjectClass *ppc_cpu_class_by_name(const char *name)
 
 PowerPCCPU *cpu_ppc_init(const char *cpu_model)
 {
-    return POWERPC_CPU(cpu_generic_init(TYPE_POWERPC_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_POWERPC_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return POWERPC_CPU(cpu);
+    }
 }
 
 /* Sort by PVR, ordering special case "host" last. */
diff --git a/target-sh4/cpu.c b/target-sh4/cpu.c
index 8621d70..db02ac2 100644
--- a/target-sh4/cpu.c
+++ b/target-sh4/cpu.c
@@ -156,7 +156,21 @@ static ObjectClass *superh_cpu_class_by_name(const char *cpu_model)
 
 SuperHCPU *cpu_sh4_init(const char *cpu_model)
 {
-    return SUPERH_CPU(cpu_generic_init(TYPE_SUPERH_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_SUPERH_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return SUPERH_CPU(cpu);
+    }
 }
 
 static void sh7750r_cpu_initfn(Object *obj)
diff --git a/target-tricore/helper.c b/target-tricore/helper.c
index a8fd418..b9aa497 100644
--- a/target-tricore/helper.c
+++ b/target-tricore/helper.c
@@ -79,7 +79,21 @@ int cpu_tricore_handle_mmu_fault(CPUState *cs, target_ulong address,
 
 TriCoreCPU *cpu_tricore_init(const char *cpu_model)
 {
-    return TRICORE_CPU(cpu_generic_init(TYPE_TRICORE_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_TRICORE_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return TRICORE_CPU(cpu);
+    }
 }
 
 static void tricore_cpu_list_entry(gpointer data, gpointer user_data)
diff --git a/target-unicore32/helper.c b/target-unicore32/helper.c
index 21f5f35..f0209b7 100644
--- a/target-unicore32/helper.c
+++ b/target-unicore32/helper.c
@@ -28,7 +28,21 @@
 
 UniCore32CPU *uc32_cpu_init(const char *cpu_model)
 {
-    return UNICORE32_CPU(cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model));
+    CPUState *cpu = cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model);
+    Error *err = NULL;
+
+    if (!cpu) {
+        return NULL;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+    if (err != NULL) {
+        error_report_err(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    } else {
+        return UNICORE32_CPU(cpu);
+    }
 }
 
 uint32_t HELPER(clo)(uint32_t x)
-- 
2.1.0