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-rw-r--r--arch/powerpc/kvm/e500_emulate.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 69cd665..d48ae39 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;