Re: [Xen-devel] [PATCH] xen/arm: route irqs to cpu0

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi all,

Ping? It would be nice to have this patch for Xen 4.4 as IPI priority
patch won't be pushed before the release.

The patch is a minor change and won't impact normal use. When dom0 is
built, Xen always do it on CPU 0.

Regards,

On 02/04/2014 04:20 PM, Stefano Stabellini wrote:
> gic_route_irq_to_guest routes all IRQs to
> cpumask_of(smp_processor_id()), but actually it always called on cpu0.
> To avoid confusion and possible issues in case someone modified the code
> and reassigned a particular irq to a cpu other than cpu0, hardcode
> cpumask_of(0).
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> 
> diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
> index e6257a7..8854800 100644
> --- a/xen/arch/arm/gic.c
> +++ b/xen/arch/arm/gic.c
> @@ -776,8 +776,8 @@ int gic_route_irq_to_guest(struct domain *d, const struct 
> dt_irq *irq,
>  
>      level = dt_irq_is_level_triggered(irq);
>  
> -    gic_set_irq_properties(irq->irq, level, cpumask_of(smp_processor_id()),
> -                           0xa0);
> +    /* TODO: handle routing irqs to cpus != cpu0 */
> +    gic_set_irq_properties(irq->irq, level, cpumask_of(0), 0xa0);
>  
>      retval = __setup_irq(desc, irq->irq, action);
>      if (retval) {
> 




-- 
Julien Grall

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