KVM: nSVM: Use common GPA helper to check for illegal CR3

Replace an open coded check for an invalid CR3 with its equivalent
helper.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210204000117.3303214-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 6918889..1055b7d 100644 (file)
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -345,7 +345,7 @@ static inline bool nested_npt_enabled(struct vcpu_svm *svm)
 static int nested_svm_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3,
                               bool nested_npt)
 {
-       if (cr3 & rsvd_bits(cpuid_maxphyaddr(vcpu), 63))
+       if (kvm_vcpu_is_illegal_gpa(vcpu, cr3))
                return -EINVAL;
 
        if (!nested_npt && is_pae_paging(vcpu) &&