Subject: Re: some questions
To: Manuel Bouyer <>
From: Thor Lancelot Simon <>
List: port-xen
Date: 01/05/2006 12:18:59
On Thu, Jan 05, 2006 at 01:43:25PM +0100, Manuel Bouyer wrote:
> On Thu, Jan 05, 2006 at 10:15:52AM +0200, Mihai CHELARU wrote:
> > 3) if the server will have 2 PCI SCSI controllers is it possible
> to use each one for single machine (shortly, domU1 should see and
> use only the first controller and use it's attached disks, and domU2
> the second..) ? physdev_dom0_hide should do the trick, right ?
> Yes, that what's it's for. You'll have to build custom kernels with
> PCI support for the domUs

It's very important to understand that if you allow any "unprivileged"
domain to access a device that does DMA, the domain is no longer
unprivileged in any meaningful way.