WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] watches not working from domU userspace


On 7 Jan 2006, at 01:54, Cihula, Joseph wrote:

This is a bigger change than I was expecting, but sometimes (often ;-)
doing the right thing is harder than doing the easy thing.  I'll start
working on this approach.

This also facilitates a useful follow-on change: modify XS_INTRODUCE to
take a grant reference instead of an mfn and use that as the command
(instead of XS_NEW_CONNECTION) to establish communication with the
userspace clients.  This would have the additional benefit of not
requiring xenstored's domain to be privileged just to map pages for its
clients.  Of course, it would mean altering the domain builder code to
create a grant reference for the xenbus page.

We definitely want that change anyway (and also for the console page). We already reserve the first 8 entries in every grant table to allow us to implement this in future.

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel