Re: [PATCH] xen/arm: Allow setting the number of CPUs to activate at runtime

[Julien Grall <julien@xxxxxxx>]

Hi,

On 30/05/2022 10:09, Bertrand Marquis wrote:
> > On 23 May 2022, at 10:13, Michal Orzel <Michal.Orzel@xxxxxxx> wrote:
> >
> > Introduce a command line parameter "maxcpus" on Arm to allow adjusting
> > the number of CPUs to activate. Currently the limit is defined by the
> > config option CONFIG_NR_CPUS. Such parameter already exists on x86.
> >
> > Define a parameter "maxcpus" and a corresponding static variable
> > max_cpus in Arm smpboot.c. Modify function smp_get_max_cpus to take
> > max_cpus as a limit and to return proper unsigned int instead of int.
> >
> > Take the opportunity to remove redundant variable cpus from start_xen
> > function and to directly assign the return value from smp_get_max_cpus
> > to nr_cpu_ids (global variable in Xen used to store the number of CPUs
> > actually activated).
> >
> > Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
> With the warning added in the documentation (which is ok to do on commit):
>
> Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
I have committed it with the update in the documentation.

Cheers,

--
Julien Grall