+static int vdpa_check_handler(__rte_unused const char *key,
+ const char *value, __rte_unused void *opaque)
+{
+ if (strcmp(value, "1"))
+ return -1;
+
+ return 0;
+}
+
+static int
+vdpa_mode_selected(struct rte_devargs *devargs)
+{
+ struct rte_kvargs *kvlist;
+ const char *key = "vdpa";
+ int ret = 0;
+
+ if (devargs == NULL)
+ return 0;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (kvlist == NULL)
+ return 0;
+
+ if (!rte_kvargs_count(kvlist, key))
+ goto exit;
+
+ /* vdpa mode selected when there's a key-value pair: vdpa=1 */
+ if (rte_kvargs_process(kvlist, key,
+ vdpa_check_handler, NULL) < 0) {
+ goto exit;
+ }
+ ret = 1;
+
+exit:
+ rte_kvargs_free(kvlist);
+ return ret;
+}
+