KVM: SVM: Refactor AVIC vcpu initialization into avic_init_vcpu()

Preparing the base code for subsequent changes. This does not change
existing logic.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index af54327..cab020a 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1600,6 +1600,23 @@ static void svm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
                avic_update_vapic_bar(svm, APIC_DEFAULT_PHYS_BASE);
 }
 
+static int avic_init_vcpu(struct vcpu_svm *svm)
+{
+       int ret;
+
+       if (!avic)
+               return 0;
+
+       ret = avic_init_backing_page(&svm->vcpu);
+       if (ret)
+               return ret;
+
+       INIT_LIST_HEAD(&svm->ir_list);
+       spin_lock_init(&svm->ir_list_lock);
+
+       return ret;
+}
+
 static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
 {
        struct vcpu_svm *svm;
@@ -1636,14 +1653,9 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
        if (!hsave_page)
                goto free_page3;
 
-       if (avic) {
-               err = avic_init_backing_page(&svm->vcpu);
-               if (err)
-                       goto free_page4;
-
-               INIT_LIST_HEAD(&svm->ir_list);
-               spin_lock_init(&svm->ir_list_lock);
-       }
+       err = avic_init_vcpu(svm);
+       if (err)
+               goto free_page4;
 
        /* We initialize this flag to true to make sure that the is_running
         * bit would be set the first time the vcpu is loaded.