Re: [PATCH for-stable-5.3 1/2] ACPI/PPTT: Add support for ACPI 6.3 thread flag

[Sasha Levin]

On Mon, Oct 14, 2019 at 07:56:01PM +0800, John Garry wrote:
> From: Jeremy Linton <jeremy.linton@xxxxxxx>
>
> Commit bbd1b70639f785a970d998f35155c713f975e3ac upstream.
>
> ACPI 6.3 adds a flag to the CPU node to indicate whether
> the given PE is a thread. Add a function to return that
> information for a given linux logical CPU.
>
> Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx>
> Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx>
> Reviewed-by: Robert Richter <rrichter@xxxxxxxxxxx>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> Signed-off-by: Will Deacon <will@xxxxxxxxxx>
> Signed-off-by: John Garry <john.garry@xxxxxxxxxx>

How far back should these patches be backported?

--
Thanks,
Sasha