Re: [Xen-devel] [PATCH v2] xen/acpi: upload _PSD info for non Dom0 CPUs too

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 03/08/2018 05:57 AM, Joao Martins wrote:

> @@ -372,6 +376,15 @@ read_acpi_id(acpi_handle handle, u32 lvl, void *context, 
> void **rv)
>   
>   	pr_debug("ACPI CPU%u w/ PBLK:0x%lx\n", acpi_id, (unsigned long)pblk);
>   
> +	/* It has P-state dependencies */
> +       if (!acpi_processor_get_psd(handle, &acpi_psd[acpi_id])) {
> +               __set_bit(acpi_id, acpi_id_psd_present);
> +
> +               pr_debug("ACPI CPU%u w/ PST:coord_type = %llu domain = %llu\n",
> +                        acpi_id, acpi_psd[acpi_id].coord_type,
> +                        acpi_psd[acpi_id].domain);
> +       }

I should have noticed this earlier, but do you really need 
acpi_id_psd_present? Can you just go by acpi_psd[i] != NULL?
Sorry for missing it in the first patch.

-boris


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