On Tue, Jul 6, 2021 at 6:18 AM Huacai Chen <chenhuacai@xxxxxxxxxxx> wrote:
> +const struct plat_smp_ops loongson3_smp_ops = {
> + .send_ipi_single = loongson3_send_ipi_single,
> + .send_ipi_mask = loongson3_send_ipi_mask,
> + .smp_setup = loongson3_smp_setup,
> + .prepare_cpus = loongson3_prepare_cpus,
> + .boot_secondary = loongson3_boot_secondary,
> + .init_secondary = loongson3_init_secondary,
> + .smp_finish = loongson3_smp_finish,
> +#ifdef CONFIG_HOTPLUG_CPU
> + .cpu_disable = loongson3_cpu_disable,
> + .cpu_die = loongson3_cpu_die,
> +#endif
> +};
I would hope that these functions can be used across platforms without
an abstraction
layer in-between. Are these not all part of the either the CPU
architecture definition or
the firmware interface?
Do you even expect to see non-SMP systems deployed widely enough that
SMP support
must be optional? On arch/arm64 we ended up always building SMP support into
the kernel because practically everyone wants it.
Arnd
