Re: [Xen-devel] [PATCH v2] xen/arm: Cap the number of interrupt lines for dom0

[Julien Grall <julien.grall@xxxxxxx>]

Hi Lukas,

On 4/5/19 2:54 PM, Lukas Juenger wrote:
> Dom0 vGIC will use the same number of interrupt lines as the hardware GIC.
> While the hardware GIC can support up to 1020 interrupt lines,
> the vGIC is only supporting up to 992 interrupt lines.
> This means that Xen will not be able to boot on platforms where the hardware
> GIC supports more than 992 interrupt lines.
> While it would make sense to increase the limits in the vGICs, this is not
> trivial because of the design choices.
> At the moment, only models seem to report the maximum of interrupt lines.
> They also do not have any interrupt wired above the 992 limit.
> So it should be fine to cap the number of interrupt lines for dom0 to 992 lines.
>
> Signed-off-by: Lukas Juenger <juenger@xxxxxxxxxxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>

Cheers,

--
Julien Grall

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