KVM: x86: Drop vendor specific functions for APICv/AVIC enablement

Now that APICv/AVIC enablement is kept in common 'enable_apicv' variable,
there's no need to call kvm_apicv_init() from vendor specific code.

No functional change intended.
Reviewed-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210609150911.1471882c-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -1672,7 +1672,6 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
 				struct x86_exception *exception);
 
 bool kvm_apicv_activated(struct kvm *kvm);
-void kvm_apicv_init(struct kvm *kvm, bool enable);
 void kvm_vcpu_update_apicv(struct kvm_vcpu *vcpu);
 void kvm_request_apicv_update(struct kvm *kvm, bool activate,
 			      unsigned long bit);

arch/x86/kvm/svm/svm.c

@@ -4442,7 +4442,6 @@ static int svm_vm_init(struct kvm *kvm)
 			return ret;
 	}
 
-	kvm_apicv_init(kvm, enable_apicv);
 	return 0;
 }
 

arch/x86/kvm/vmx/vmx.c

@@ -7004,7 +7004,6 @@ static int vmx_vm_init(struct kvm *kvm)
 			break;
 		}
 	}
-	kvm_apicv_init(kvm, enable_apicv);
 	return 0;
 }
 

arch/x86/kvm/x86.c

@@ -8471,16 +8471,15 @@ bool kvm_apicv_activated(struct kvm *kvm)
 }
 EXPORT_SYMBOL_GPL(kvm_apicv_activated);
 
-void kvm_apicv_init(struct kvm *kvm, bool enable)
+static void kvm_apicv_init(struct kvm *kvm)
 {
-	if (enable)
+	if (enable_apicv)
 		clear_bit(APICV_INHIBIT_REASON_DISABLE,
 			  &kvm->arch.apicv_inhibit_reasons);
 	else
 		set_bit(APICV_INHIBIT_REASON_DISABLE,
 			&kvm->arch.apicv_inhibit_reasons);
 }
-EXPORT_SYMBOL_GPL(kvm_apicv_init);
 
 static void kvm_sched_yield(struct kvm_vcpu *vcpu, unsigned long dest_id)
 {
@@ -10885,6 +10884,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 	INIT_DELAYED_WORK(&kvm->arch.kvmclock_update_work, kvmclock_update_fn);
 	INIT_DELAYED_WORK(&kvm->arch.kvmclock_sync_work, kvmclock_sync_fn);
 
+	kvm_apicv_init(kvm);
 	kvm_hv_init_vm(kvm);
 	kvm_page_track_init(kvm);
 	kvm_mmu_init_vm(kvm);