target/arm: Move definition of 'host' cpu type into cpu.c

Move the definition of the 'host' cpu type into cpu.c, where all the
other CPU types are defined.  We can do this now we've decoupled it
from the KVM-specific host feature probing.  This means we now create
the type unconditionally (assuming we were built with KVM support at
all), but if you try to use it without -enable-kvm this will end
up in the "host cpu probe failed and KVM not enabled" path in
arm_cpu_realizefn(), for an appropriate error message.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180308130626.12393-3-peter.maydell@linaro.org

target/arm/cpu.c

@@ -1864,6 +1864,26 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
 #endif
 }
 
+#ifdef CONFIG_KVM
+static void arm_host_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+
+    kvm_arm_set_cpu_features_from_host(cpu);
+}
+
+static const TypeInfo host_arm_cpu_type_info = {
+    .name = TYPE_ARM_HOST_CPU,
+#ifdef TARGET_AARCH64
+    .parent = TYPE_AARCH64_CPU,
+#else
+    .parent = TYPE_ARM_CPU,
+#endif
+    .instance_init = arm_host_initfn,
+};
+
+#endif
+
 static void cpu_register(const ARMCPUInfo *info)
 {
     TypeInfo type_info = {
@@ -1908,6 +1928,10 @@ static void arm_cpu_register_types(void)
         cpu_register(info);
         info++;
     }
+
+#ifdef CONFIG_KVM
+    type_register_static(&host_arm_cpu_type_info);
+#endif
 }
 
 type_init(arm_cpu_register_types)

target/arm/kvm.c

@@ -152,23 +152,6 @@ void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
     env->features = arm_host_cpu_features.features;
 }
 
-static void kvm_arm_host_cpu_initfn(Object *obj)
-{
-    ARMCPU *cpu = ARM_CPU(obj);
-
-    kvm_arm_set_cpu_features_from_host(cpu);
-}
-
-static const TypeInfo host_arm_cpu_type_info = {
-    .name = TYPE_ARM_HOST_CPU,
-#ifdef TARGET_AARCH64
-    .parent = TYPE_AARCH64_CPU,
-#else
-    .parent = TYPE_ARM_CPU,
-#endif
-    .instance_init = kvm_arm_host_cpu_initfn,
-};
-
 int kvm_arch_init(MachineState *ms, KVMState *s)
 {
     /* For ARM interrupt delivery is always asynchronous,
@@ -184,8 +167,6 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
 
     cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE);
 
-    type_register_static(&host_arm_cpu_type_info);
-
     return 0;
 }