On Wed, Jan 16, 2019 at 08:50:13AM +0100, Juergen Gross wrote: > @@ -1650,13 +1650,14 @@ void xen_callback_vector(void) > xen_have_vector_callback = 0; > return; > } > - pr_info("Xen HVM callback vector for event delivery is > enabled\n"); > + if (!silent) > + pr_info("Xen HVM callback vector for event > delivery is enabled\n"); How about replacing pr_info() with pr_info_once()? -boris