[PATCH 8/8] ARM: vexpress/dcscb: select multi-cluster SMP operations

[Jon Medhurst (Tixy)]

On Fri, 2013-05-24 at 01:45 -0400, Nicolas Pitre wrote:
> When the DCSCB code is successfully probed and initialized, then the
> generic MCPM SPM ops should be used as those operations need to be
> arbitrated through the MCPM layer.
> 
> Signed-off-by: Nicolas Pitre <nicolas.pitre at linaro.org>
> ---
>  arch/arm/mach-vexpress/dcscb.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c
> index 1acc975360..ce3118dc05 100644
> --- a/arch/arm/mach-vexpress/dcscb.c
> +++ b/arch/arm/mach-vexpress/dcscb.c
> @@ -239,6 +239,8 @@ static int __init dcscb_init(void)
>  		return ret;
>  	}
>  
> +	mcpm_smp_set_ops();
> +

This is going to change the platform's smp_ops after setup_arch() has
already set them, is that OK and not too late?

I ask, because for me, RTSM doesn't boot the secondary CPUs if we rely
on this change to set the smp_ops, but having a hook in setup_arch() to
select instead of the standard vexpress ops does work.

I haven't investigated this more fully yet.
 
-- 
Tixy