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Re: [Xen-devel] Re: Back end domains : input desired


  • To: mark.williamson@xxxxxxxxxxxx
  • From: Andrew Warfield <andrew.warfield@xxxxxxxxx>
  • Date: Mon, 24 Jan 2005 17:17:45 +0000
  • Cc: bgb@xxxxxxxxx, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 24 Jan 2005 17:18:31 +0000
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> > > So does this have any connections to the physical network cards at all?
> >
> > No. Could I possibly use the "dummy" driver to handle this requirement?
> 
> Don't think so.  The main problem is that this domain needs to have privileges
> to access other domains memory (otherwise the backend driver doesn't work).
> I don't know of a way to specify this in a domain config.

this can currently be achieved (in a really sleazy way) by adding a
pci= line in the non-0 domain's config, and just handing it a device
that it doesn't have drivers for and so won't touch.

this is clearly not the, um, ideal approach to elevating privilege,
but it may get you going until the tools catch up. ;)

hth,
a.


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