Re: [PATCH] x86/Xen: streamline (and fix) PV CPU enumeration

[Boris Ostrovsky]

On 3/27/19 11:12 AM, Jan Beulich wrote:
> -
> -static void __init xen_filter_cpu_maps(void)
> +static void __init _get_smp_config(unsigned int early)
>  {
>  	int i, rc;
>  	unsigned int subtract = 0;
>  
> -	if (!xen_initial_domain())
> +	if (early)
>  		return;
>  
>  	num_processors = 0;


Is there a reason to set_cpu_possible() here (not in the diff, but in
this routine)? This will be called from setup_arch() before
prefill_possible_map(), which will clear and then re-initialize
__cpu_possible_mask.



-boris