KVM: PPC: Add emulation for dcba

Mac OS X uses the dcba instruction. According to the specification it doesn't
guarantee any functionality, so let's just emulate it as nop.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/book3s_64_emulate.c b/arch/powerpc/kvm/book3s_64_emulate.c
index bbd15906900d..8f50776a9a1d 100644
--- a/arch/powerpc/kvm/book3s_64_emulate.c
+++ b/arch/powerpc/kvm/book3s_64_emulate.c
@@ -37,6 +37,7 @@
 #define OP_31_XOP_SLBIA         498
 #define OP_31_XOP_MFSR          595
 #define OP_31_XOP_MFSRIN        659
+#define OP_31_XOP_DCBA          758
 #define OP_31_XOP_SLBMFEV       851
 #define OP_31_XOP_EIOIO         854
 #define OP_31_XOP_SLBMFEE       915
@@ -183,6 +184,9 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
                                 kvmppc_set_gpr(vcpu, get_rt(inst), t);
                         }
                         break;
+                case OP_31_XOP_DCBA:
+                        /* Gets treated as NOP */
+                        break;
                 case OP_31_XOP_DCBZ:
                 {
                         ulong rb = kvmppc_get_gpr(vcpu, get_rb(inst));