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

To: Stefan Berger <stefanb@xxxxxxxxxx>
From: "George S. Coker, II" <gscoker@xxxxxxxxxxxxxx>
Date: Fri, 09 Mar 2007 17:07:27 -0500
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Keir Fraser <keir@xxxxxxxxxxxxx>, xense-devel@xxxxxxxxxxxxxxxxxxx, xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Delivery-date: Fri, 09 Mar 2007 14:07:00 -0800
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

> 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
domain.


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

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