Re: [Xen-devel] [PATCH 5/6] libxl: events: Deregister evtchn fd when not needed

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-12-09 at 15:54 +0000, Ian Jackson wrote:
> We want to have no fd events registered when we are idle.
> In this patch, deal with the evtchn fd:
> 
>  * Defer setup of the evtchn handle to the first use.
>  * Defer registration of the evtchn fd; register as needed on use.
>  * When cancelling an evtchn wait, or when wait setup fails, check
>    whether there are now no evtchn waits and if so deregister the fd.
>  * On libxl teardown, the evtchn fd should therefore be unregistered.
>    assert that this is the case.
> 
> Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> Release-Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>



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