The hard lockup watchdog can fire under local_irq_disable on platforms with irq soft masking.
Signed-off-by: Nicholas Piggin <[email protected]> --- arch/powerpc/kernel/smp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index db88660bf6bd..e16ec7b3b427 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -574,9 +574,10 @@ static void stop_this_cpu(void *dummy) /* Remove this CPU */ set_cpu_online(smp_processor_id(), false); - local_irq_disable(); + hard_irq_disable(); + spin_begin(); while (1) - ; + spin_cpu_relax(); } void smp_send_stop(void) -- 2.16.3
