target/arm/kvm: Have kvm_arm_add_vcpu_properties take a ARMCPU argument

Unify the "kvm_arm.h" API: All functions related to ARM vCPUs
take a ARMCPU* argument. Use the CPU() QOM cast macro When
calling the generic vCPU API from "sysemu/kvm.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Message-id: 20231123183518.64569-4-philmd@linaro.org
[PMM: fix parameter name in doc comment too]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/cpu.c

@@ -1686,7 +1686,7 @@ void arm_cpu_post_init(Object *obj)
     }
 
     if (kvm_enabled()) {
-        kvm_arm_add_vcpu_properties(obj);
+        kvm_arm_add_vcpu_properties(cpu);
     }
 
 #ifndef CONFIG_USER_ONLY

target/arm/kvm.c

@@ -497,10 +497,10 @@ static void kvm_steal_time_set(Object *obj, bool value, Error **errp)
 }
 
 /* KVM VCPU properties should be prefixed with "kvm-". */
-void kvm_arm_add_vcpu_properties(Object *obj)
+void kvm_arm_add_vcpu_properties(ARMCPU *cpu)
 {
-    ARMCPU *cpu = ARM_CPU(obj);
     CPUARMState *env = &cpu->env;
+    Object *obj = OBJECT(cpu);
 
     if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) {
         cpu->kvm_adjvtime = true;

target/arm/kvm_arm.h

@@ -148,12 +148,12 @@ void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu);
 
 /**
  * kvm_arm_add_vcpu_properties:
- * @obj: The CPU object to add the properties to
+ * @cpu: The CPU object to add the properties to
  *
  * Add all KVM specific CPU properties to the CPU object. These
  * are the CPU properties with "kvm-" prefixed names.
  */
-void kvm_arm_add_vcpu_properties(Object *obj);
+void kvm_arm_add_vcpu_properties(ARMCPU *cpu);
 
 /**
  * kvm_arm_steal_time_finalize:
@@ -243,7 +243,7 @@ static inline void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
     g_assert_not_reached();
 }
 
-static inline void kvm_arm_add_vcpu_properties(Object *obj)
+static inline void kvm_arm_add_vcpu_properties(ARMCPU *cpu)
 {
     g_assert_not_reached();
 }