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[Xen-devel] RE: information leaking between domains via granted pages?

  • To: "Santos, Jose Renato G" <joserenato.santos@xxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Tue, 4 Mar 2008 19:21:07 +1100
  • Delivery-date: Tue, 04 Mar 2008 00:21:39 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Ach9qLXF4BxOPME/Qtm5dC52XyjJVwAEJdzAAAXR+1A=
  • Thread-topic: information leaking between domains via granted pages?
>   This is not a problem today as DomU is not granted access to any
Dom0
> page. DomU is the one which grants access to dom0 both for TX and RX.
>   On the other hand dom0 can access any data in granted domU pages but
> this is OK as we trust dom0.

Maybe I'm mistaken about the way 'page flipping' on the rx path works
then... care to enlighten me?

James

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