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Re: [Xen-devel][Xense-devel][PATCH][XSM][1/4] Xen Security Modules Patch

> Why is there mediation in evtchn_reset [.evtchn_reset]? It looks like
> the code tries to only close an event channel if necessary. I suppose
> that once you have been allowed to open an event channel you should be
> able to reset (close) it.  
To deprivilege the hypercall, because it can be called by an
unprivileged domain on itself and by a privileged domain on another

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