KVM: SEV: introduce to_kvm_sev_info

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-10-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm/sev.c

@@ -96,7 +96,7 @@ static int sev_flush_asids(unsigned int min_asid, unsigned int max_asid)
 
 static inline bool is_mirroring_enc_context(struct kvm *kvm)
 {
-	return !!to_kvm_svm(kvm)->sev_info.enc_context_owner;
+	return !!to_kvm_sev_info(kvm)->enc_context_owner;
 }
 
 static bool sev_vcpu_has_debug_swap(struct vcpu_svm *svm)
@@ -653,7 +653,7 @@ static int __sev_launch_update_vmsa(struct kvm *kvm, struct kvm_vcpu *vcpu,
 	clflush_cache_range(svm->sev_es.vmsa, PAGE_SIZE);
 
 	vmsa.reserved = 0;
-	vmsa.handle = to_kvm_svm(kvm)->sev_info.handle;
+	vmsa.handle = to_kvm_sev_info(kvm)->handle;
 	vmsa.address = __sme_pa(svm->sev_es.vmsa);
 	vmsa.len = PAGE_SIZE;
 	ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_VMSA, &vmsa, error);

arch/x86/kvm/svm/svm.h

@@ -319,6 +319,11 @@ static __always_inline struct kvm_svm *to_kvm_svm(struct kvm *kvm)
 	return container_of(kvm, struct kvm_svm, kvm);
 }
 
+static __always_inline struct kvm_sev_info *to_kvm_sev_info(struct kvm *kvm)
+{
+	return &to_kvm_svm(kvm)->sev_info;
+}
+
 static __always_inline bool sev_guest(struct kvm *kvm)
 {
 #ifdef CONFIG_KVM_AMD_SEV