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| author |   Will Deacon <will@kernel.org> | 2019-08-27 15:54:56 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-08-27 17:37:05 +0100 |
| commit | ebef746543fd1aa162216b0e484eb9062b65741d (patch) | |
| tree | 507feaa5b91fb00abfba642341fec367c3b4bc86 /arch/arm64 | |
| parent | arm64: smp: Don't enter kernel with NULL stack pointer or task struct (diff) | |
| download | linux-dev-ebef746543fd1aa162216b0e484eb9062b65741d.tar.xz linux-dev-ebef746543fd1aa162216b0e484eb9062b65741d.zip | |
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>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 1f8aeb77cba5..dc9fe879c279 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -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)) { |