KVM: Move cr0/cr4/efer related helpers to x86.h

They have more general scope than the mmu.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

arch/x86/kvm/x86.h

@@ -41,4 +41,28 @@ static inline bool is_protmode(struct kvm_vcpu *vcpu)
 	return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
 }
 
+static inline int is_long_mode(struct kvm_vcpu *vcpu)
+{
+#ifdef CONFIG_X86_64
+	return vcpu->arch.shadow_efer & EFER_LMA;
+#else
+	return 0;
+#endif
+}
+
+static inline int is_pae(struct kvm_vcpu *vcpu)
+{
+	return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
+}
+
+static inline int is_pse(struct kvm_vcpu *vcpu)
+{
+	return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
+}
+
+static inline int is_paging(struct kvm_vcpu *vcpu)
+{
+	return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
+}
+
 #endif