Re: [PATCH v4] xen/dom0less: support for vcpu affinity

[Julien Grall <julien@xxxxxxx>]

Hi Stefano,

On 20/02/2025 02:18, Stefano Stabellini wrote:
> From: Xenia Ragiadakou <xenia.ragiadakou@xxxxxxx>
>
> Add vcpu affinity to the dom0less bindings. Example:
>
>      dom1 {
>              ...
>              cpus = <4>;
>              vcpu0 {
>                     compatible = "xen,vcpu";
>                     id = <0>;
>                     hard-affinity = "4-7";
>              };
>              vcpu1 {
>                     compatible = "xen,vcpu";
>                     id = <1>;
>                     hard-affinity = "0-3,5";
>              };
>              vcpu2 {
>                     compatible = "xen,vcpu";
>                     id = <2>;
>                     hard-affinity = "1,6";
>              };
>              ...
>
> Note that the property hard-affinity is optional. It is possible to add
> other properties in the future not only to specify soft affinity, but
> also to provide more precise methods for configuring affinity. For
> instance, on ARM the MPIDR could be use to specify the pCPU. For now, it
> is left to the future.
>
> Signed-off-by: Xenia Ragiadakou <xenia.ragiadakou@xxxxxxx>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall