Re: [Xen-devel] [PATCH v7 09/12] xen: add per-platform defaults for NR_CPUS

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 07/07/18 00:14, Stefano Stabellini wrote:
> Add specific per-platform defaults for NR_CPUS. Note that the order of
> the defaults matter: they need to go first, otherwise the generic
> defaults will be applied.
>
> This is done so that Xen builds customized for a specific hardware
> platform can have the right NR_CPUS number.
>
> Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>

Cheers,

> CC: JBeulich@xxxxxxxx
> CC: andrew.cooper3@xxxxxxxxxx
>
> ---
>
> Changes in v6:
> - remove useless additional default for ALL
> ---
>   xen/arch/Kconfig | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig
> index cf0acb7..1954d1c 100644
> --- a/xen/arch/Kconfig
> +++ b/xen/arch/Kconfig
> @@ -3,6 +3,9 @@ config NR_CPUS
>         int "Maximum number of physical CPUs"
>         range 1 4095
>         default "256" if X86
> +       default "8" if ARM && RCAR3
> +       default "4" if ARM && QEMU
> +       default "4" if ARM && MPSOC
>         default "128" if ARM
>         ---help---
>           Specifies the maximum number of physical CPUs which Xen will support.
--
Julien Grall

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