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Commit 855bfe0d authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc: hard disable irqs in smp_send_stop loop 



The hard lockup watchdog can fire under local_irq_disable
on platforms with irq soft masking.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 6bed3237

arch/powerpc/kernel/smp.c

+3 −2
Original line number Diff line number Diff line
@@ -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)