+
+static int
+bus_handle_sigbus(const struct rte_bus *bus,
+ const void *failure_addr)
+{
+ int ret;
+
+ if (!bus->sigbus_handler)
+ return -1;
+
+ ret = bus->sigbus_handler(failure_addr);
+
+ /* find bus but handle failed, keep the errno be set. */
+ if (ret < 0 && rte_errno == 0)
+ rte_errno = ENOTSUP;
+
+ return ret > 0;
+}
+
+int
+rte_bus_sigbus_handler(const void *failure_addr)
+{
+ struct rte_bus *bus;
+
+ int ret = 0;
+ int old_errno = rte_errno;
+
+ rte_errno = 0;
+
+ bus = rte_bus_find(NULL, bus_handle_sigbus, failure_addr);
+ /* can not find bus. */
+ if (!bus)
+ return 1;
+ /* find bus but handle failed, pass on the new errno. */
+ else if (rte_errno != 0)
+ return -1;
+
+ /* restore the old errno. */
+ rte_errno = old_errno;
+
+ return ret;
+}