[Qemu-devel] [PATCH v2 4/4] target-i386: Call cpu_exec_init() on realize

[Eduardo Habkost <ehabkost@redhat.com>]

QOM instance_init functions are not supposed to have any side-effects,
as new objects may be created at any moment for querying property
information (see qmp_device_list_properties()).

Calling cpu_exec_init() also affects QEMU's ability to handle errors
during CPU creation, as some actions done by cpu_exec_init() can't be
reverted.

Move cpu_exec_init() call to realize so a simple object_new() won't
trigger it, and so that it is called after some basic validation of CPU
parameters.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Changes v1 -> v2:
 * Call cpu_exec_init() after basic parameter validation
---
 target-i386/cpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 2e5a303..19d1525 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -2832,6 +2832,8 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
         goto out;
     }
 
+    cpu_exec_init(cs, &error_abort);
+
     if (tcg_enabled()) {
         tcg_x86_init();
     }
@@ -3027,7 +3029,6 @@ static void x86_cpu_initfn(Object *obj)
     FeatureWord w;
 
     cs->env_ptr = env;
-    cpu_exec_init(cs, &error_abort);
 
     object_property_add(obj, "family", "int",
                         x86_cpuid_version_get_family,
-- 
2.1.0