Re: [patch 1/2 v2] x86/cpu: Init AP exception handling from cpu_init_secondary()

[Peter Zijlstra]

On Mon, May 10, 2021 at 11:29:25PM +0200, Thomas Gleixner wrote:
> +#ifdef CONFIG_SMP
> +void cpu_init_secondary(void)
> +{
	/*
	 * Relies on the BP having set-up the IDT tables, which
	 * are loaded on this CPU in the below
	 * cpu_init_exception_handling().
	 */
> +	cpu_init_exception_handling();
> +	cpu_init();
> +}
> +#endif

Or something along those lines? It took me a little to figure out why
start_secondary() didn't have idt_setup_traps(), hopefully something
like this will avoid a little future confusion.