Re: [Xen-devel] [Draft F] Xen on ARM vITS Handling

[Vijay Kilari <vijay.kilari@xxxxxxxxx>]

On Thu, Jun 11, 2015 at 3:10 PM, Ian Campbell <ian.campbell@xxxxxxxxxx> wrote:
> Draft F follows. Also at:
> http://xenbits.xen.org/people/ianc/vits/draftF.{pdf,html}
>
>
> ## Per-domain `struct pending_irq` for `vLPI`s
>
> Internally Xen uses a `struct pending_irq` to track the status of any
> pending virtual IRQ, including a virtual LPI.
>
> Upon domain creation an array of such `struct pending_irq`'s will be
> allocated to cover the range `8192..nr_lpis` (for the number of LPIs
> which the guest is configured with) and a pointer this array will be
> stored in the `struct domain`. The function `irq_to_pending` will be
> modified to lookup interupts in the LPI range in this array.
>.

nr_lpis can be large if more devices are assigned to domain.
As I was suggesting on #xenarm chat, is it ok to use RB-tree instead of array?

what should be value for nr_lpis?

Regards
Vijay

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