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Re: [PATCH v6 4/6] xen/cpupool: Create different cpupools at boot time
- To: Luca Fancellu <luca.fancellu@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 8 Apr 2022 10:56:07 +0200
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- Cc: bertrand.marquis@xxxxxxx, wei.chen@xxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 08 Apr 2022 08:56:23 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.04.2022 10:45, Luca Fancellu wrote:
> Introduce a way to create different cpupools at boot time, this is
> particularly useful on ARM big.LITTLE system where there might be the
> need to have different cpupools for each type of core, but also
> systems using NUMA can have different cpu pools for each node.
>
> The feature on arm relies on a specification of the cpupools from the
> device tree to build pools and assign cpus to them.
>
> ACPI is not supported for this feature.
>
> Documentation is created to explain the feature.
>
> Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
> Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
This looks to be not in line with ...
> ---
> Changes in v6:
> - Changed docs, return if booted with ACPI in btcpupools_dtb_parse,
> panic if /chosen does not exists. Changed commit message (Julien)
> - Add Juergen R-by for the xen/common/sched part that didn't change
... what you say here. What's the scope of Jürgen's R-b? If it has
restricted scope, you need to retain that restriction for committers
to know.
Jan
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