Re: [PATCH v2 3/3] x86/resctrl: Add "*" shorthand to set minimum io_alloc CBM for all domains

From: Moger, Babu

Date: Thu Dec 18 2025 - 19:40:29 EST


Hi Aaron,

On 12/18/2025 6:31 PM, Aaron Tomlin wrote:
On Thu, Dec 18, 2025 at 03:56:24PM -0600, Moger, Babu wrote:
Why is io_alloc special? The same simple change could apply to
parse_line() to allow setting all domains in a resource to be set to
the same value:

Hi Tony, Babu,

Yes. I am fine with that approach. Treat "*" equivalent for all the
resources not just io_alloc.

No. While I appreciate the desire for a more uniform interface, I would
strongly suggest that this particular change remain applicable only to
io_alloc for the time being. If I recall correctly, the architectural
requirements for other resources differ enough that the suggested approach
may not be universally applicable or appropriate in every case, no?


Yes. That is correct. Lets do this only for io_alloc.

Reinette commented on the already.

https://lore.kernel.org/lkml/a76c2eee-2a64-42ab-b81c-90638321cd15@xxxxxxxxx/

Thanks
Babu