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 <vkuzn...@redhat.com> --- - CPU0 hotplug is currently broken on x86, see https://lkml.org/lkml/2017/6/26/529 --- arch/x86/xen/time.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index a1895a8..1ecb05d 100644 --- 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) { -- 2.9.4 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
