diff --git a/qemu/target-i386/cpu-qom.h b/qemu/target-i386/cpu-qom.h
index e9f48663..c0d66c5c 100644
--- a/qemu/target-i386/cpu-qom.h
+++ b/qemu/target-i386/cpu-qom.h
@@ -63,6 +63,10 @@ typedef struct X86CPUClass {
 
     bool kvm_required;
 
+    /* Optional description of CPU model.
+     * If unavailable, cpu_def->model_id is used */
+    const char *model_description;
+
     DeviceRealize parent_realize;
     void (*parent_reset)(CPUState *cpu);
 } X86CPUClass;