Xen: register panic notifier to take crashes of xen guests on panic
Register a panic notifier so that when the guest crashes it can shut
down the domain and indicate it was a crash to the host.
Signed-off-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 90a3e80..d99522e 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1040,6 +1040,26 @@
xen_reboot(SHUTDOWN_crash);
}
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ struct sched_shutdown r = { .reason = SHUTDOWN_crash};
+
+ if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
+ BUG();
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block xen_panic_block = {
+ .notifier_call= xen_panic_event,
+};
+
+int xen_panic_handler_init(void)
+{
+ atomic_notifier_chain_register(&panic_notifier_list, &xen_panic_block);
+ return 0;
+}
+
static const struct machine_ops __initdata xen_machine_ops = {
.restart = xen_restart,
.halt = xen_machine_halt,