diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index ab5e5257dbf4a2eecb10b5e1571f69700f9bd39c..b3bccd17680b9bcad1af85e3449a7a42d192b6f1 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -2756,6 +2756,28 @@ virCPUx86DataSetVendor(virCPUDataPtr cpuData,
 }
 
 
+int
+virCPUx86DataAddFeature(virCPUDataPtr cpuData,
+                        const char *name)
+{
+    virCPUx86FeaturePtr feature;
+    virCPUx86MapPtr map;
+
+    if (!(map = virCPUx86GetMap()))
+        return -1;
+
+    /* ignore unknown features */
+    if (!(feature = x86FeatureFind(map, name)) &&
+        !(feature = x86FeatureFindInternal(name)))
+        return 0;
+
+    if (x86DataAdd(&cpuData->data.x86, &feature->data) < 0)
+        return -1;
+
+    return 0;
+}
+
+
 struct cpuArchDriver cpuDriverX86 = {
     .name = "x86",
     .arch = archs,
diff --git a/src/cpu/cpu_x86.h b/src/cpu/cpu_x86.h
index ab539491498011514a72ea63f201904cb69bdf59..91ec43fea982c1cc4fc6db76e9b9b473344052b3 100644
--- a/src/cpu/cpu_x86.h
+++ b/src/cpu/cpu_x86.h
@@ -39,4 +39,7 @@ int virCPUx86DataSetSignature(virCPUDataPtr cpuData,
 int virCPUx86DataSetVendor(virCPUDataPtr cpuData,
                            const char *vendor);
 
+int virCPUx86DataAddFeature(virCPUDataPtr cpuData,
+                            const char *name);
+
 #endif /* __VIR_CPU_X86_H__ */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 0dda65a2bce59614e15829a5ded67cac7775cde7..bce0487ab309d6b338057269dab8a5a4d7a225c6 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1003,6 +1003,7 @@ virCPUUpdate;
 
 # cpu/cpu_x86.h
 virCPUx86DataAddCPUID;
+virCPUx86DataAddFeature;
 virCPUx86DataSetSignature;
 virCPUx86DataSetVendor;