xen/x86: Don't BUG on CPU0 offlining

CONFIG_BOOTPARAM_HOTPLUG_CPU0 allows to offline CPU0 but Xen HVM guests BUG() in xen_teardown_timer(). Remove the BUG_ON(), this is probably a leftover from ancient times when CPU0 hotplug was impossible, it works just fine for HVM. Signed-off-by: Vitaly Kuznetsov <[email protected]> Acked-by: Juergen Gross <[email protected]> Signed-off-by: Juergen Gross <[email protected]>
josf · Jul 23, 2017 · 0e4d394 · 0e4d394
1 parent 4b162c5
commit 0e4d394
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
@@ -309,7 +309,6 @@ static irqreturn_t xen_timer_interrupt(int irq, void *dev_id)
 void xen_teardown_timer(int cpu)
 {
 	struct clock_event_device *evt;
-	BUG_ON(cpu == 0);
 	evt = &per_cpu(xen_clock_events, cpu).evt;
 
 	if (evt->irq >= 0) {