KVM: SVM: Skip intercepted PAUSE instructions after emulation

Skip PAUSE after interception to avoid unnecessarily re-executing the
instruction in the guest, e.g. after regaining control post-yield.
This is a benign bug as KVM disables PAUSE interception if filtering is
off, including the case where pause_filter_count is set to zero.
Signed-off-by: NSean Christopherson <seanjc@google.com>
Message-Id: <20210205005750.3841462-10-seanjc@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm/svm.c

@@ -2980,7 +2980,7 @@ static int pause_interception(struct kvm_vcpu *vcpu)
 		grow_ple_window(vcpu);
 
 	kvm_vcpu_on_spin(vcpu, in_kernel);
-	return 1;
+	return kvm_skip_emulated_instruction(vcpu);
 }
 
 static int invpcid_interception(struct kvm_vcpu *vcpu)