Re: [PATCH v2 1/5] x86/topology: Export helper to get CPU number from APIC ID

[Thomas Gleixner <tglx@linutronix.de>]

On Mon, Jun 24 2024 at 16:20, Yazen Ghannam wrote:

> The need to look up a CPU number from an APIC ID is done in at least one
> other place outside of APIC/topology code:
> apei_smca_report_x86_error().

The need .... is done?

>  #ifdef CONFIG_X86_LOCAL_APIC
>  int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level);
> +int topology_get_cpunr(u32 apic_id);
>  #else
>  static inline int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level)
>  {
>  	return 0;
>  }
> +
> +static inline int topology_get_cpunr(u32 apic_id)
> +{
> +	return -ENODEV;

Why ENODEV and not 0?

> +}
>  #endif

Thanks,

        tglx