Commit ebef7465 authored Aug 27, 2019 by Will Deacon

arm64: smp: Treat unknown boot failures as being 'stuck in kernel'



When we fail to bring a secondary CPU online and it fails in an unknown
state, we should assume the worst and increment 'cpus_stuck_in_kernel'
so that things like kexec() are disabled.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

parent 5b1cfe3a

arch/arm64/kernel/smp.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -147,6 +147,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
		default:
		pr_err("CPU%u: failed in unknown state : 0x%lx\n",
		cpu, status);
		cpus_stuck_in_kernel++;
		break;
		case CPU_KILL_ME:
		if (!op_cpu_kill(cpu)) {

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