Re: [Xen-devel] [XenARM] XEN tools for ARM with Virtualization Extensions

["Eric Trudeau" <etrudeau@xxxxxxxxxxxx>]

> > >> > What functions should I call to implement  XEN_DOMCTL_bind_pt_irq on
> > >> ARM?
> > >>
> > >> There's a function like route_irq_to_guest which we use to route IRQs to
> > >> dom0 during boot. In principal that could also be used to reroute an IRQ
> > >> to a guest, but I'm not sure how it will interact with the reassignment,
> > >> since in your case the IRQ starts off bound to dom0. Hopefully it's just
> > >> a small change to make it work for this case.
> > >>

I have IRQs for devices being passed to ARM DomU guests now.  Thanks for your
help.

The IRQ mapping needs to be unmapped when the domU is destroyed and it is not
happening presently.  I don't see a call to PHYSDEVOP_unmap_pirq or anything.
Should the mapped IRQs for a guest be unmapped when Xen destroys the domain
based on the IRQ rangeset?  Where do you suggest doing this?
Or should the tools call an xc_physdev_unmap_pirq() when destroying the domain?
I would think it should be implicit in Hypervisor code to relinquish all 
resources of a
domain upon destruction...

Thanks,
Eric
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