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Re: [PATCH 1/3] xen/device-tree: Parse 'cpu-map' node for CPU topology exploration
- To: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 12 Jun 2026 08:49:59 +0200
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- Cc: "Mykyta_Poturai@xxxxxxxx" <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Fri, 12 Jun 2026 06:50:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12.06.2026 04:29, Hirokazu Takahashi wrote:
>>> --- /dev/null
>>
>
>> The name of the new file does not in any way
>
>> ... express this is all about DT stuff. Is this intentional? Else it
>> may want adjusting.
>
> To address the immediate concern, I agree with renaming the file
> to 'dt-cpu-topology.h' in v2, since the current implementation is
> purely Device Tree-based.
>
> However, my original intention behind the generic name was to
> accommodate future enhancements. Since ARM Xen supports both Device
> Tree and ACPI-based boots determined at runtime, I hoped to allow
> ACPI boots to populate and share the same underlying topology data
> structure. I think this can be achieved by scanning the ACPI PPTT
> (Processor Properties Topology Table).
If that's the plan, then keeping the name is fine (at least with me)
as long as that plan is mentioned in the description.
Jan
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