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-rw-r--r--target-ppc/translate_init.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 954195f5e4..a003c1029d 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -9231,6 +9231,14 @@ static void ppc_cpu_realizefn(DeviceState *dev, Error **errp)
#if !defined(CONFIG_USER_ONLY)
cpu->cpu_dt_id = (cs->cpu_index / smp_threads) * max_smt
+ (cs->cpu_index % smp_threads);
+
+ if (kvm_enabled() && !kvm_vcpu_id_is_valid(cpu->cpu_dt_id)) {
+ error_setg(errp, "Can't create CPU with id %d in KVM", cpu->cpu_dt_id);
+ error_append_hint(errp, "Adjust the number of cpus to %d "
+ "or try to raise the number of threads per core\n",
+ cpu->cpu_dt_id * smp_threads / max_smt);
+ return;
+ }
#endif
if (tcg_enabled()) {