Re: [PATCH v8 10/11] irqchip/sifive-plic: Initialize the plic handler when cpu comes online

[Thomas Gleixner]

Atish Patra <atish.patra@xxxxxxx> writes:
  
> +static void plic_handler_init(struct plic_handler *handler, u32 threshold)
> +{
> +	irq_hw_number_t hwirq;
> +
> +	/* priority must be > threshold to trigger an interrupt */
> +	writel(threshold, handler->hart_base + CONTEXT_THRESHOLD);
> +	for (hwirq = 1; hwirq < plic_irqdomain->hwirq_max; hwirq++)
> +		plic_toggle(handler, hwirq, 0);
> +}

> +
> +static int plic_starting_cpu(unsigned int cpu)
> +{
> +	u32 threshold = 0;

Pointless variable. Also you use PLIC_DISABLE_THRESHOLD down below, so
please add a proper define for enable as well.

> +	struct plic_handler *handler = per_cpu_ptr(&plic_handlers, cpu);

        this_cpu_ptr*&...)

The callback is guaranteed to run on the plugged in CPU.

> -			threshold = 0xffffffff;
> +			plic_handler_init(handler, PLIC_DISABLE_THRESHOLD);

Thanks,

        tglx