Re: [RFC PATCH 09/16] xen/evtchn: support evtchn in xenhost_t

[Juergen Gross]

On 09.05.19 19:25, Ankur Arora wrote:
> Largely mechanical patch that adds a new param, xenhost_t * to the
> evtchn interfaces. The evtchn port instead of being domain unique, is
> now scoped to xenhost_t.
>
> As part of upcall handling we now look at all the xenhosts and, for
> evtchn_2l, the xenhost's shared_info and vcpu_info. Other than this
> event handling is largley unchanged.
>
> Note that the IPI, timer, VIRQ, FUNCTION, PMU etc vectors remain
> attached to xh_default. Only interdomain evtchns are allowable as
> xh_remote.

I'd do only the interface changes for now (including evtchn FIFO).

The main difference will be how to call the hypervisor for sending an
event (either direct or via a passthrough-hypercall).


Juergen