Re: [Xen-devel] [PATCH v4 14/17] xen/arm: ITS: Add domain specific ITS initialization

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Fri, 2015-07-10 at 13:12 +0530, vijay.kilari@xxxxxxxxx wrote:
> +void vgic_its_init(void)
> +{
> +    if ( gic_lpi_supported() )
> +        its_lpi_init(gic_nr_id_bits());

Ah, here is some code which tries to only enable this stuff when it is
needed.

I think for the time being this also needs to be gated on dom0, which in
practice means is_hardware_domain(d).

When PCI passthrough lands then this will be changed to gate on
is_hardware_domain(d) || some_option instead.

> +}
> +
>  /*
>   * Local variables:
>   * mode: C
> diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c
> index 4e14439..79dbfc4 100644
> --- a/xen/arch/arm/vgic-v3.c
> +++ b/xen/arch/arm/vgic-v3.c
> @@ -1217,6 +1217,9 @@ static int vgic_v3_domain_init(struct domain *d)
>  
>      d->arch.vgic.ctlr = VGICD_CTLR_DEFAULT;
>  
> +    if ( gic_lpi_supported() )
> +        vits_domain_init(d);


and here as well. I suspect there will be other places too.

Ian.



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