[Qemu-devel] [PATCH 03/10] target-i386: cpu: move xcc->kvm_required check to realize time

[Igor Mammedov <imammedo@redhat.com>]

it will allow to drop custom cpu_x86_init() and use
cpu_generic_init() insteadi, reducing cpu_x86_create()
to a simple 3-liner.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Eduardo Habkost <ehabkost@redhat.com>
---
v1:
  - use x86_cpu_class_get_model_name() for getting cpu model name
---
 target-i386/cpu.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 79a9b61..ae67a15 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -677,6 +677,14 @@ static ObjectClass *x86_cpu_class_by_name(const char *cpu_model)
     return oc;
 }
 
+static char *x86_cpu_class_get_model_name(X86CPUClass *cc)
+{
+    const char *class_name = object_class_get_name(OBJECT_CLASS(cc));
+    assert(g_str_has_suffix(class_name, X86_CPU_TYPE_SUFFIX));
+    return g_strndup(class_name,
+                     strlen(class_name) - strlen(X86_CPU_TYPE_SUFFIX));
+}
+
 struct X86CPUDefinition {
     const char *name;
     uint32_t level;
@@ -2169,7 +2177,6 @@ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp)
 X86CPU *cpu_x86_create(const char *cpu_model, Error **errp)
 {
     X86CPU *cpu = NULL;
-    X86CPUClass *xcc;
     ObjectClass *oc;
     gchar **model_pieces;
     char *name, *features;
@@ -2188,12 +2195,6 @@ X86CPU *cpu_x86_create(const char *cpu_model, Error **errp)
         error_setg(&error, "Unable to find CPU definition: %s", name);
         goto out;
     }
-    xcc = X86_CPU_CLASS(oc);
-
-    if (xcc->kvm_required && !kvm_enabled()) {
-        error_setg(&error, "CPU model '%s' requires KVM", name);
-        goto out;
-    }
 
     cpu = X86_CPU(object_new(object_class_get_name(oc)));
 
@@ -2870,6 +2871,13 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
     static bool ht_warned;
     FeatureWord w;
 
+    if (xcc->kvm_required && !kvm_enabled()) {
+        char *name = x86_cpu_class_get_model_name(xcc);
+        error_setg(&local_err, "CPU model '%s' requires KVM", name);
+        g_free(name);
+        goto out;
+    }
+
     if (cpu->apic_id < 0) {
         error_setg(errp, "apic-id property was not initialized properly");
         return;
-- 
1.8.3.1