1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 69cd665a0caf..d48ae396f41e 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -81,8 +81,12 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
                 kvmppc_set_pid(vcpu, spr_val);
                 break;
         case SPRN_PID1:
+                if (spr_val != 0)
+                        return EMULATE_FAIL;
                 vcpu_e500->pid[1] = spr_val; break;
         case SPRN_PID2:
+                if (spr_val != 0)
+                        return EMULATE_FAIL;
                 vcpu_e500->pid[2] = spr_val; break;
         case SPRN_MAS0:
                 vcpu_e500->mas0 = spr_val; break;