Re: [Xen-devel] [PATCH] xen: arm: use physical processor ID (MPIDR) when calling psci CPU_ON

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 07/14/2014 05:21 PM, Ian Campbell wrote:
> Xen's logical CPU map can differ from the underlying layout.
> 
> Also add an emacs magic block to this file.
> 
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>

Any plan to backport this patch for Xen 4.4? I suspect we have the same
issue on the Versatile Express when PSCI and A7 are used.

> ---
>  xen/arch/arm/psci.c |   12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/xen/arch/arm/psci.c b/xen/arch/arm/psci.c
> index 25a8697..b6360d5 100644
> --- a/xen/arch/arm/psci.c
> +++ b/xen/arch/arm/psci.c
> @@ -54,7 +54,8 @@ static uint32_t psci_cpu_on_nr;
>  
>  int call_psci_cpu_on(int cpu)
>  {
> -    return __invoke_psci_fn_smc(psci_cpu_on_nr, cpu, __pa(init_secondary), 
> 0);
> +    return __invoke_psci_fn_smc(psci_cpu_on_nr,
> +                                cpu_logical_map(cpu), __pa(init_secondary), 
> 0);
>  }
>  
>  int __init psci_init(void)
> @@ -96,3 +97,12 @@ int __init psci_init(void)
>  
>      return 0;
>  }
> +
> +/*
> + * Local variables:
> + * mode: C
> + * c-file-style: "BSD"
> + * c-basic-offset: 4
> + * indent-tabs-mode: nil
> + * End:
> + */
> 

Regards,

-- 
Julien Grall

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