1 files changed, 22 insertions, 1 deletions

diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 313c7b2..a090d79 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -888,14 +888,35 @@ static inline uint32_t mfpvr(void)
     return pvr;
 }
 
+static void alter_insns(uint64_t *word, uint64_t flags, bool on)
+{
+    if (on) {
+        *word |= flags;
+    } else {
+        *word &= ~flags;
+    }
+}
+
 const ppc_def_t *kvmppc_host_cpu_def(void)
 {
     uint32_t host_pvr = mfpvr();
     const ppc_def_t *base_spec;
+    ppc_def_t *spec;
+    uint32_t vmx = kvmppc_get_vmx();
+    uint32_t dfp = kvmppc_get_dfp();
 
     base_spec = ppc_find_by_pvr(host_pvr);
 
-    return base_spec;
+    spec = g_malloc0(sizeof(*spec));
+    memcpy(spec, base_spec, sizeof(*spec));
+
+    /* Now fix up the spec with information we can query from the host */
+
+    alter_insns(&spec->insns_flags, PPC_ALTIVEC, vmx > 0);
+    alter_insns(&spec->insns_flags2, PPC2_VSX, vmx > 1);
+    alter_insns(&spec->insns_flags2, PPC2_DFP, dfp);
+
+    return spec;
 }
 
 bool kvm_arch_stop_on_emulation_error(CPUState *env)