1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
index 3e5e4194ef86..519aac12b365 100644
--- a/arch/arm/kvm/coproc.c
+++ b/arch/arm/kvm/coproc.c
@@ -40,6 +40,24 @@
  * Co-processor emulation
  *****************************************************************************/
 
+static bool write_to_read_only(struct kvm_vcpu *vcpu,
+			       const struct coproc_params *params)
+{
+	WARN_ONCE(1, "CP15 write to read-only register\n");
+	print_cp_instr(params);
+	kvm_inject_undefined(vcpu);
+	return false;
+}
+
+static bool read_from_write_only(struct kvm_vcpu *vcpu,
+				 const struct coproc_params *params)
+{
+	WARN_ONCE(1, "CP15 read to write-only register\n");
+	print_cp_instr(params);
+	kvm_inject_undefined(vcpu);
+	return false;
+}
+
 /* 3 bits per cache level, as per CLIDR, but non-existent caches always 0 */
 static u32 cache_levels;