exec: move cpu_exec_init() calls to realize functions

Modify all CPUs to call it from XXX_cpu_realizefn() function.

Remove all the cannot_destroy_with_object_finalize_yet as
unsafe references have been moved to cpu_exec_realizefn().
(tested with QOM command provided by commit 4c315c27)

for arm:

Setting of cpu->mp_affinity is moved from arm_cpu_initfn()
to arm_cpu_realizefn() as setting of cpu_index is now done
in cpu_exec_realizefn(). To avoid to overwrite an user defined
value, we set it to an invalid value by default, and update
it in realize function only if the value is still invalid.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

22 files changed, 133 insertions, 149 deletions

diff --git a/exec.c b/exec.c
index 902dac597b..9c97a0a4a2 100644
--- a/exec.c
+++ b/exec.c
@@ -634,7 +634,7 @@ void cpu_exec_initfn(CPUState *cpu)
 #endif
 }
 
-void cpu_exec_init(CPUState *cpu, Error **errp)
+void cpu_exec_realizefn(CPUState *cpu, Error **errp)
 {
     CPUClass *cc ATTRIBUTE_UNUSED = CPU_GET_CLASS(cpu);
 
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 336a57cde6..9797d556e8 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -57,7 +57,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
                               uint32_t flags,
                               int cflags);
 
-void cpu_exec_init(CPUState *cpu, Error **errp);
 void QEMU_NORETURN cpu_loop_exit(CPUState *cpu);
 void QEMU_NORETURN cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc);
 
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index d7648a9333..5520c6c3c1 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -947,6 +947,7 @@ AddressSpace *cpu_get_address_space(CPUState *cpu, int asidx);
 void QEMU_NORETURN cpu_abort(CPUState *cpu, const char *fmt, ...)
     GCC_FMT_ATTR(2, 3);
 void cpu_exec_initfn(CPUState *cpu);
+void cpu_exec_realizefn(CPUState *cpu, Error **errp);
 void cpu_exec_exit(CPUState *cpu);
 
 #ifdef CONFIG_SOFTMMU
diff --git a/target-alpha/cpu.c b/target-alpha/cpu.c
index 6d01d7f75e..30d77ce71c 100644
--- a/target-alpha/cpu.c
+++ b/target-alpha/cpu.c
@@ -59,6 +59,13 @@ static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     qemu_init_vcpu(cs);
 
@@ -266,7 +273,6 @@ static void alpha_cpu_initfn(Object *obj)
     CPUAlphaState *env = &cpu->env;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
     tlb_flush(cs, 1);
 
     alpha_translate_init();
@@ -309,13 +315,6 @@ static void alpha_cpu_class_init(ObjectClass *oc, void *data)
     cc->disas_set_info = alpha_cpu_disas_set_info;
 
     cc->gdb_num_core_regs = 67;
-
-    /*
-     * Reason: alpha_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo alpha_cpu_type_info = {
diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h
index 3991173d47..a42495bac9 100644
--- a/target-arm/cpu-qom.h
+++ b/target-arm/cpu-qom.h
@@ -80,9 +80,11 @@ void arm_gt_stimer_cb(void *opaque);
 #define ARM_AFF2_MASK  (0xFFULL << ARM_AFF2_SHIFT)
 #define ARM_AFF3_SHIFT 32
 #define ARM_AFF3_MASK  (0xFFULL << ARM_AFF3_SHIFT)
+#define ARM_DEFAULT_CPUS_PER_CLUSTER 8
 
 #define ARM32_AFFINITY_MASK (ARM_AFF0_MASK|ARM_AFF1_MASK|ARM_AFF2_MASK)
 #define ARM64_AFFINITY_MASK \
     (ARM_AFF0_MASK|ARM_AFF1_MASK|ARM_AFF2_MASK|ARM_AFF3_MASK)
+#define ARM64_AFFINITY_INVALID (~ARM64_AFFINITY_MASK)
 
 #endif
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 1b9540e085..fb272a86c1 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -434,29 +434,16 @@ static void arm_disas_set_info(CPUState *cpu, disassemble_info *info)
     }
 }
 
-#define ARM_CPUS_PER_CLUSTER 8
-
 static void arm_cpu_initfn(Object *obj)
 {
     CPUState *cs = CPU(obj);
     ARMCPU *cpu = ARM_CPU(obj);
     static bool inited;
-    uint32_t Aff1, Aff0;
 
     cs->env_ptr = &cpu->env;
-    cpu_exec_init(cs, &error_abort);
     cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
                                          g_free, g_free);
 
-    /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it.
-     * We don't support setting cluster ID ([16..23]) (known as Aff2
-     * in later ARM ARM versions), or any of the higher affinity level fields,
-     * so these bits always RAZ.
-     */
-    Aff1 = cs->cpu_index / ARM_CPUS_PER_CLUSTER;
-    Aff0 = cs->cpu_index % ARM_CPUS_PER_CLUSTER;
-    cpu->mp_affinity = (Aff1 << ARM_AFF1_SHIFT) | Aff0;
-
 #ifndef CONFIG_USER_ONLY
     /* Our inbound IRQ and FIQ lines */
     if (kvm_enabled()) {
@@ -576,6 +563,13 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
     ARMCPU *cpu = ARM_CPU(dev);
     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
     CPUARMState *env = &cpu->env;
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     /* Some features automatically imply others: */
     if (arm_feature(env, ARM_FEATURE_V8)) {
@@ -631,6 +625,17 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
         set_feature(env, ARM_FEATURE_THUMB_DSP);
     }
 
+    /* This cpu-id-to-MPIDR affinity is used only for TCG; KVM will override it.
+     * We don't support setting cluster ID ([16..23]) (known as Aff2
+     * in later ARM ARM versions), or any of the higher affinity level fields,
+     * so these bits always RAZ.
+     */
+    if (cpu->mp_affinity == ARM64_AFFINITY_INVALID) {
+        uint32_t Aff1 = cs->cpu_index / ARM_DEFAULT_CPUS_PER_CLUSTER;
+        uint32_t Aff0 = cs->cpu_index % ARM_DEFAULT_CPUS_PER_CLUSTER;
+        cpu->mp_affinity = (Aff1 << ARM_AFF1_SHIFT) | Aff0;
+    }
+
     if (cpu->reset_hivecs) {
             cpu->reset_sctlr |= (1 << 13);
     }
@@ -1461,7 +1466,8 @@ static Property arm_cpu_properties[] = {
     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
     DEFINE_PROP_UINT32("psci-conduit", ARMCPU, psci_conduit, 0),
     DEFINE_PROP_UINT32("midr", ARMCPU, midr, 0),
-    DEFINE_PROP_UINT64("mp-affinity", ARMCPU, mp_affinity, 0),
+    DEFINE_PROP_UINT64("mp-affinity", ARMCPU,
+                        mp_affinity, ARM64_AFFINITY_INVALID),
     DEFINE_PROP_END_OF_LIST()
 };
 
@@ -1533,17 +1539,6 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
     cc->debug_check_watchpoint = arm_debug_check_watchpoint;
 
     cc->disas_set_info = arm_disas_set_info;
-
-    /*
-     * Reason: arm_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     *
-     * Once this is fixed, the devices that create ARM CPUs should be
-     * updated not to set cannot_destroy_with_object_finalize_yet,
-     * unless they still screw up something else.
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void cpu_register(const ARMCPUInfo *info)
diff --git a/target-cris/cpu.c b/target-cris/cpu.c
index d680cfb52b..2e9ab9700e 100644
--- a/target-cris/cpu.c
+++ b/target-cris/cpu.c
@@ -142,6 +142,13 @@ static void cris_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cpu_reset(cs);
     qemu_init_vcpu(cs);
@@ -187,7 +194,6 @@ static void cris_cpu_initfn(Object *obj)
     static bool tcg_initialized;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     env->pregs[PR_VR] = ccc->vr;
 
@@ -326,13 +332,6 @@ static void cris_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_stop_before_watchpoint = true;
 
     cc->disas_set_info = cris_disas_set_info;
-
-    /*
-     * Reason: cris_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo cris_cpu_type_info = {
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 7dc6f6286b..ae9024653c 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -3271,7 +3271,11 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
             cpu->phys_bits = 32;
         }
     }
-    cpu_exec_init(cs, &error_abort);
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     if (tcg_enabled()) {
         tcg_x86_init();
diff --git a/target-lm32/cpu.c b/target-lm32/cpu.c
index a783d461dd..8d939a7779 100644
--- a/target-lm32/cpu.c
+++ b/target-lm32/cpu.c
@@ -144,6 +144,13 @@ static void lm32_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     LM32CPUClass *lcc = LM32_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cpu_reset(cs);
 
@@ -160,7 +167,6 @@ static void lm32_cpu_initfn(Object *obj)
     static bool tcg_initialized;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     env->flags = 0;
 
@@ -285,13 +291,6 @@ static void lm32_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_stop_before_watchpoint = true;
     cc->debug_excp_handler = lm32_debug_excp_handler;
     cc->disas_set_info = lm32_cpu_disas_set_info;
-
-    /*
-     * Reason: lm32_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void lm32_register_cpu_type(const LM32CPUInfo *info)
diff --git a/target-m68k/cpu.c b/target-m68k/cpu.c
index 116b784e63..17e4be2934 100644
--- a/target-m68k/cpu.c
+++ b/target-m68k/cpu.c
@@ -159,6 +159,13 @@ static void m68k_cpu_realizefn(DeviceState *dev, Error **errp)
     CPUState *cs = CPU(dev);
     M68kCPU *cpu = M68K_CPU(dev);
     M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     m68k_cpu_init_gdb(cpu);
 
@@ -176,7 +183,6 @@ static void m68k_cpu_initfn(Object *obj)
     static bool inited;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled() && !inited) {
         inited = true;
@@ -222,13 +228,6 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
     cc->gdb_core_xml_file = "cf-core.xml";
 
     dc->vmsd = &vmstate_m68k_cpu;
-
-    /*
-     * Reason: m68k_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void register_cpu_type(const M68kCPUInfo *info)
diff --git a/target-microblaze/cpu.c b/target-microblaze/cpu.c
index 8edc00a796..389c7b691e 100644
--- a/target-microblaze/cpu.c
+++ b/target-microblaze/cpu.c
@@ -138,6 +138,13 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
     CPUMBState *env = &cpu->env;
     uint8_t version_code = 0;
     int i = 0;
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     qemu_init_vcpu(cs);
 
@@ -199,7 +206,6 @@ static void mb_cpu_initfn(Object *obj)
     static bool tcg_initialized;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
 
@@ -267,12 +273,6 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_num_core_regs = 32 + 5;
 
     cc->disas_set_info = mb_disas_set_info;
-
-    /*
-     * Reason: mb_cpu_initfn() calls cpu_exec_init(), which saves the
-     * object in cpus -> dangling pointer after final object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo mb_cpu_type_info = {
diff --git a/target-mips/cpu.c b/target-mips/cpu.c
index 64ad112f4d..65ca607f88 100644
--- a/target-mips/cpu.c
+++ b/target-mips/cpu.c
@@ -124,6 +124,13 @@ static void mips_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cpu_reset(cs);
     qemu_init_vcpu(cs);
@@ -138,7 +145,6 @@ static void mips_cpu_initfn(Object *obj)
     CPUMIPSState *env = &cpu->env;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled()) {
         mips_tcg_init();
@@ -177,13 +183,6 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
 
     cc->gdb_num_core_regs = 73;
     cc->gdb_stop_before_watchpoint = true;
-
-    /*
-     * Reason: mips_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo mips_cpu_type_info = {
diff --git a/target-moxie/cpu.c b/target-moxie/cpu.c
index 50a0899471..b0be4a7551 100644
--- a/target-moxie/cpu.c
+++ b/target-moxie/cpu.c
@@ -61,6 +61,13 @@ static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     qemu_init_vcpu(cs);
     cpu_reset(cs);
@@ -75,7 +82,6 @@ static void moxie_cpu_initfn(Object *obj)
     static int inited;
 
     cs->env_ptr = &cpu->env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled() && !inited) {
         inited = 1;
@@ -124,13 +130,6 @@ static void moxie_cpu_class_init(ObjectClass *oc, void *data)
     cc->vmsd = &vmstate_moxie_cpu;
 #endif
     cc->disas_set_info = moxie_cpu_disas_set_info;
-
-    /*
-     * Reason: moxie_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void moxielite_initfn(Object *obj)
diff --git a/target-openrisc/cpu.c b/target-openrisc/cpu.c
index 155913f107..698e87bb25 100644
--- a/target-openrisc/cpu.c
+++ b/target-openrisc/cpu.c
@@ -81,6 +81,13 @@ static void openrisc_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     qemu_init_vcpu(cs);
     cpu_reset(cs);
@@ -95,7 +102,6 @@ static void openrisc_cpu_initfn(Object *obj)
     static int inited;
 
     cs->env_ptr = &cpu->env;
-    cpu_exec_init(cs, &error_abort);
 
 #ifndef CONFIG_USER_ONLY
     cpu_openrisc_mmu_init(cpu);
@@ -180,13 +186,6 @@ static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
     dc->vmsd = &vmstate_openrisc_cpu;
 #endif
     cc->gdb_num_core_regs = 32 + 3;
-
-    /*
-     * Reason: openrisc_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void cpu_register(const OpenRISCCPUInfo *info)
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index b66b40b82f..40dae70fb2 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -9678,7 +9678,7 @@ static void ppc_cpu_realizefn(DeviceState *dev, Error **errp)
     }
 #endif
 
-    cpu_exec_init(cs, &local_err);
+    cpu_exec_realizefn(cs, &local_err);
     if (local_err != NULL) {
         error_propagate(errp, local_err);
         return;
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index 35ae2cec4b..9e2f239cf1 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -207,7 +207,7 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
         goto out;
     }
 
-    cpu_exec_init(cs, &err);
+    cpu_exec_realizefn(cs, &err);
     if (err != NULL) {
         goto out;
     }
@@ -440,12 +440,6 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_core_xml_file = "s390x-core64.xml";
     cc->gdb_arch_name = s390_gdb_arch_name;
 
-    /*
-     * Reason: s390_cpu_realizefn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
     s390_cpu_model_class_register_props(oc);
 }
 
diff --git a/target-sh4/cpu.c b/target-sh4/cpu.c
index f589532e18..a38f6a6ded 100644
--- a/target-sh4/cpu.c
+++ b/target-sh4/cpu.c
@@ -244,6 +244,13 @@ static void superh_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cpu_reset(cs);
     qemu_init_vcpu(cs);
@@ -258,7 +265,6 @@ static void superh_cpu_initfn(Object *obj)
     CPUSH4State *env = &cpu->env;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     env->movcal_backup_tail = &(env->movcal_backup);
 
@@ -303,13 +309,6 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_num_core_regs = 59;
 
     dc->vmsd = &vmstate_sh_cpu;
-
-    /*
-     * Reason: superh_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo superh_cpu_type_info = {
diff --git a/target-sparc/cpu.c b/target-sparc/cpu.c
index 800a25aa57..4e07b92fbd 100644
--- a/target-sparc/cpu.c
+++ b/target-sparc/cpu.c
@@ -792,7 +792,9 @@ static bool sparc_cpu_has_work(CPUState *cs)
 
 static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     SPARCCPUClass *scc = SPARC_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
 #if defined(CONFIG_USER_ONLY)
     SPARCCPU *cpu = SPARC_CPU(dev);
     CPUSPARCState *env = &cpu->env;
@@ -802,7 +804,13 @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
     }
 #endif
 
-    qemu_init_vcpu(CPU(dev));
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    qemu_init_vcpu(cs);
 
     scc->parent_realize(dev, errp);
 }
@@ -814,7 +822,6 @@ static void sparc_cpu_initfn(Object *obj)
     CPUSPARCState *env = &cpu->env;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled()) {
         gen_intermediate_code_init(env);
@@ -867,13 +874,6 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
 #else
     cc->gdb_num_core_regs = 72;
 #endif
-
-    /*
-     * Reason: sparc_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo sparc_cpu_type_info = {
diff --git a/target-tilegx/cpu.c b/target-tilegx/cpu.c
index 7017cb6e1a..454793f94a 100644
--- a/target-tilegx/cpu.c
+++ b/target-tilegx/cpu.c
@@ -92,6 +92,13 @@ static void tilegx_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     TileGXCPUClass *tcc = TILEGX_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cpu_reset(cs);
     qemu_init_vcpu(cs);
@@ -107,7 +114,6 @@ static void tilegx_cpu_initfn(Object *obj)
     static bool tcg_initialized;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled() && !tcg_initialized) {
         tcg_initialized = true;
@@ -162,13 +168,6 @@ static void tilegx_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = tilegx_cpu_set_pc;
     cc->handle_mmu_fault = tilegx_cpu_handle_mmu_fault;
     cc->gdb_num_core_regs = 0;
-
-    /*
-     * Reason: tilegx_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo tilegx_cpu_type_info = {
diff --git a/target-tricore/cpu.c b/target-tricore/cpu.c
index 35d4ee4dea..785b76bd3a 100644
--- a/target-tricore/cpu.c
+++ b/target-tricore/cpu.c
@@ -69,6 +69,13 @@ static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
     TriCoreCPU *cpu = TRICORE_CPU(dev);
     TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev);
     CPUTriCoreState *env = &cpu->env;
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     /* Some features automatically imply others */
     if (tricore_feature(env, TRICORE_FEATURE_161)) {
@@ -95,7 +102,6 @@ static void tricore_cpu_initfn(Object *obj)
     CPUTriCoreState *env = &cpu->env;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled()) {
         tricore_tcg_init();
@@ -172,13 +178,6 @@ static void tricore_cpu_class_init(ObjectClass *c, void *data)
     cc->dump_state = tricore_cpu_dump_state;
     cc->set_pc = tricore_cpu_set_pc;
     cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb;
-
-    /*
-     * Reason: tricore_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void cpu_register(const TriCoreCPUInfo *info)
diff --git a/target-unicore32/cpu.c b/target-unicore32/cpu.c
index e7a4984260..c169972b59 100644
--- a/target-unicore32/cpu.c
+++ b/target-unicore32/cpu.c
@@ -101,9 +101,17 @@ static const UniCore32CPUInfo uc32_cpus[] = {
 
 static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
 
-    qemu_init_vcpu(CPU(dev));
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    qemu_init_vcpu(cs);
 
     ucc->parent_realize(dev, errp);
 }
@@ -116,7 +124,6 @@ static void uc32_cpu_initfn(Object *obj)
     static bool inited;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
 #ifdef CONFIG_USER_ONLY
     env->uncached_asr = ASR_MODE_USER;
@@ -160,13 +167,6 @@ static void uc32_cpu_class_init(ObjectClass *oc, void *data)
     cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
 #endif
     dc->vmsd = &vmstate_uc32_cpu;
-
-    /*
-     * Reason: uc32_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static void uc32_register_cpu_type(const UniCore32CPUInfo *info)
diff --git a/target-xtensa/cpu.c b/target-xtensa/cpu.c
index 5ad08a2799..e8e9f9175b 100644
--- a/target-xtensa/cpu.c
+++ b/target-xtensa/cpu.c
@@ -99,6 +99,13 @@ static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cs = CPU(dev);
     XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev);
+    Error *local_err = NULL;
+
+    cpu_exec_realizefn(cs, &local_err);
+    if (local_err != NULL) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs;
 
@@ -117,7 +124,6 @@ static void xtensa_cpu_initfn(Object *obj)
 
     cs->env_ptr = env;
     env->config = xcc->config;
-    cpu_exec_init(cs, &error_abort);
 
     if (tcg_enabled() && !tcg_inited) {
         tcg_inited = true;
@@ -158,13 +164,6 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
 #endif
     cc->debug_excp_handler = xtensa_breakpoint_handler;
     dc->vmsd = &vmstate_xtensa_cpu;
-
-    /*
-     * Reason: xtensa_cpu_initfn() calls cpu_exec_init(), which saves
-     * the object in cpus -> dangling pointer after final
-     * object_unref().
-     */
-    dc->cannot_destroy_with_object_finalize_yet = true;
 }
 
 static const TypeInfo xtensa_cpu_type_info = {