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List:       xense-devel
Subject:    [Xense-devel] Re: [Xen-devel] [PATCH] Allow programatic iomem
From:       Derek Murray <derek.murray () cl ! cam ! ac ! uk>
Date:       2007-07-13 14:13:18
Message-ID: D81862AF-58D5-465B-A5B0-DBEE25DBF0A8 () cl ! cam ! ac ! uk
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Hi Kieran,

On 13 Jul 2007, at 12:05, Kieran Mansley wrote:
...
> Any thoughts on the above?
>
> I'm happy to do some work to rectify this situation but don't want to
> expend effort on something that won't get accepted.  Any background on
> the reasons for the restriction (i.e. what the TLB flushing issues  
> are)
> would also be of help.

If it's as straightforward as Keir has suggested elsewhere in this  
thread, then it would seem possible to get rid of this check  
altogether. The xsm_map_grantref hook would suffice to implement  
security policy, and could be used to prohibit certain domains from  
mapping any grants at all.

Regards,

Derek Murray.

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