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Re: [Xen-devel] [PATCH v3 13/24] xen/arm: Implement hypercall PHYSDEVOP_{, un}map_pirq

On Mon, 2015-02-23 at 15:51 +0000, Julien Grall wrote:
> On 20/02/15 16:53, Ian Campbell wrote:

> > Are we absolutely 100% sure that we will never ever want to map hardware
> > IRQs to guests on ARMs using pirq-type event channels? Because that is
> > what we are essentially ruling out here.
> That would happen if we decide to implement an interrupt controller
> which doesn't support virtualization.

Good point. It's pretty unlikely but not absolutely impossible. So we
should avoid reusing the pirq evtchn type for this. Jan suggested
XENDOMCTL_bind_pt_irq which is looking better and better...


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