KVM: PPC: Book3S PR: Ignore PMU SPRs

When we expose a POWER8 CPU into the guest, it will start accessing PMU SPRs
that we don't emulate. Just ignore accesses to them.

Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 45d0a80..52448ef 100644 (file)
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -455,6 +455,13 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
        case SPRN_WPAR_GEKKO:
        case SPRN_MSSSR0:
        case SPRN_DABR:
+#ifdef CONFIG_PPC_BOOK3S_64
+       case SPRN_MMCRS:
+       case SPRN_MMCRA:
+       case SPRN_MMCR0:
+       case SPRN_MMCR1:
+       case SPRN_MMCR2:
+#endif
                break;
 unprivileged:
        default:
@@ -553,6 +560,13 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
        case SPRN_WPAR_GEKKO:
        case SPRN_MSSSR0:
        case SPRN_DABR:
+#ifdef CONFIG_PPC_BOOK3S_64
+       case SPRN_MMCRS:
+       case SPRN_MMCRA:
+       case SPRN_MMCR0:
+       case SPRN_MMCR1:
+       case SPRN_MMCR2:
+#endif
                *spr_val = 0;
                break;
        default: