On Tue, Jul 6, 2021 at 6:18 AM Huacai Chen <chenhuacai@xxxxxxxxxxx> wrote:
> +void arch_cpu_idle(void)
> +{
> + local_irq_enable();
> + __arch_cpu_idle();
> +}
This looks racy: What happens if an interrupt is pending and hits before
entering __arch_cpu_idle()?
Usually CPU idle instructions are designed to be called with interrupts disabled
and wait until an interrupt happens, including one that was already pending.
Arnd
