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

[Julien Grall <julien.grall@xxxxxxx>]

On 4/8/19 11:15 AM, Julien Grall wrote:
> 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>
Now pushed.

Cheers,

--
Julien Grall

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