ARM: KVM: abstract (and fix) external abort detection away

Bit 8 is cache maintenance, bit 9 is external abort.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>

arch/arm/include/asm/kvm_emulate.h

@@ -110,4 +110,9 @@ static inline int kvm_vcpu_dabt_get_rd(struct kvm_vcpu *vcpu)
 	return (kvm_vcpu_get_hsr(vcpu) & HSR_SRT_MASK) >> HSR_SRT_SHIFT;
 }
 
+static inline bool kvm_vcpu_dabt_isextabt(struct kvm_vcpu *vcpu)
+{
+	return kvm_vcpu_get_hsr(vcpu) & HSR_DABT_EA;
+}
+
 #endif /* __ARM_KVM_EMULATE_H__ */