[Qemu-devel] [PATCH 09/16] target-i386: cpu: convert 'model-id' to static property

[Igor Mammedov <imammedo@redhat.com>]

* check "if (model_id == NULL)" looks unnecessary now, since all
builtin model-ids are not NULL and user shouldn't be able to set
it NULL (cpumodel string parsing code takes care of it, if feature
is specified as "model-id=" on command line, its parsing will
result in an empty string as value).

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v4:
 - fix invalid use of error_is_set(errp) if errp == NULL
v3:
 - cpu_x86_properties changed to x86_cpu_properties
   upstream, rebase on top of it.
v2:
  - afaerber: inline property definition inside of
              property array.
---
 target-i386/cpu.c | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 1ad1087..4389ffa 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1454,7 +1454,8 @@ static PropertyInfo qdev_prop_vendor = {
     .set   = x86_cpuid_set_vendor,
 };
 
-static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
+static void x86_cpuid_get_model_id(Object *obj, Visitor *v, void *opaque,
+                                   const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
     CPUX86State *env = &cpu->env;
@@ -1466,18 +1467,23 @@ static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
         value[i] = env->cpuid_model[i >> 2] >> (8 * (i & 3));
     }
     value[48] = '\0';
-    return value;
+    visit_type_str(v, &value, name, errp);
+    g_free(value);
 }
 
-static void x86_cpuid_set_model_id(Object *obj, const char *model_id,
-                                   Error **errp)
+static void x86_cpuid_set_model_id(Object *obj, Visitor *v, void *opaque,
+                                   const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
     CPUX86State *env = &cpu->env;
+    Error *err = NULL;
     int c, len, i;
+    char *model_id;
 
-    if (model_id == NULL) {
-        model_id = "";
+    visit_type_str(v, &model_id, name, &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
     }
     len = strlen(model_id);
     memset(env->cpuid_model, 0, 48);
@@ -1489,8 +1495,15 @@ static void x86_cpuid_set_model_id(Object *obj, const char *model_id,
         }
         env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
     }
+    g_free(model_id);
 }
 
+static PropertyInfo qdev_prop_model_id = {
+    .name  = "string",
+    .get   = x86_cpuid_get_model_id,
+    .set   = x86_cpuid_set_model_id,
+};
+
 static void x86_cpuid_get_tsc_freq(Object *obj, Visitor *v, void *opaque,
                                    const char *name, Error **errp)
 {
@@ -2670,9 +2683,6 @@ static void x86_cpu_initfn(Object *obj)
     cs->env_ptr = env;
     cpu_exec_init(env);
 
-    object_property_add_str(obj, "model-id",
-                            x86_cpuid_get_model_id,
-                            x86_cpuid_set_model_id, NULL);
     object_property_add(obj, "tsc-frequency", "int",
                         x86_cpuid_get_tsc_freq,
                         x86_cpuid_set_tsc_freq, NULL, NULL, NULL);
@@ -2741,6 +2751,7 @@ static Property x86_cpu_properties[] = {
     { .name = "model", .info = &qdev_prop_model },
     { .name = "stepping", .info = &qdev_prop_stepping },
     { .name = "vendor", .info  = &qdev_prop_vendor },
+    { .name  = "model-id", .info  = &qdev_prop_model_id },
     DEFINE_PROP_END_OF_LIST()
 };
 
-- 
1.8.3.1