+ /*
+ * If the CSD lock is still stuck after 5 minutes, it is unlikely
+ * to become unstuck. Use a signed comparison to avoid triggering
+ * on underflows when the TSC is out of sync between sockets.
+ */
+ BUG_ON(panic_on_ipistall > 0 && (s64)ts_delta > ((s64)panic_on_ipistall * NSEC_PER_MSEC));