Re: [PATCH 4/5] xen/cpupool: Create different cpupools at boot time

[Juergen Gross <jgross@xxxxxxxx>]

On 15.02.22 18:56, Luca Fancellu wrote:
> > On 15 Feb 2022, at 10:48, Juergen Gross <jgross@xxxxxxxx> wrote:
> >
> > On 15.02.22 11:15, Luca Fancellu wrote:
> > > Introduce an architecture specific 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.
> > > Documentation is created to explain the feature.
> > > Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
> > IIRC I suggested to have the core functionality in common code in order
> > to allow using boot time cpupool creation e.g. via commandline for x86,
> > too.
> Yes, however I think the parser to handle everything by command line would
> be huge due to input sanitisation and not easy enough as the DT, however
> I see Hyperlaunch has plans to use DT on x86 so I guess it would be ok to make
> this feature common once the DT is available also on x86.
Everything not being explicitly specific to Arm should be in common
code. Think of the work in progress for Risc-V.


Juergen

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