Re: [PATCH v3 3/7] xen/evtchn: restrict the maximum number of evtchn supported for domUs

[Julien Grall <julien@xxxxxxx>]

Hi,

On 01/09/2022 14:53, Michal Orzel wrote:
> On 01/09/2022 11:13, Rahul Singh wrote:
> > Restrict the maximum number of evtchn supported for domUs to avoid
> > allocating a large amount of memory in Xen.
> >
> > Set the default value of max_evtchn_port to 1023. The value of 1023
> > should be sufficient for domUs guests because on ARM we don't bind
> > physical interrupts to event channels. The only use of the evtchn port
> > is inter-domain communications.
> Following the previous discussion, I think the only missing piece is
> an explanation that 1023 was chose to follow the default behavior of libxl.
+1. The current explanation only justify why we haven't added a 
device-tree property to change the default value.
> Apart from that:
> Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
Cheers,

--
Julien Grall