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Re: [Xen-users] driver domains / PCI passthru on amd64

  • To: "Hans-Christian Armingeon" <johnny@xxxxxxxxxx>
  • From: "David Goodlad" <dgoodlad@xxxxxxxxx>
  • Date: Tue, 21 Mar 2006 23:16:06 -0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 22 Mar 2006 07:17:32 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi Johnny

I am running an x86_64 system here and pci passthrough does seem to
work for paravirtualized guests.  You won't notice any effect in your
dom0 (ie: it will still show up in lspci).  However, if you check your
dmesg, you will notice a message like 'pciback: grabbing device
nn:nn.n'.  This means that the pci backend driver has claimed
ownership of your device, denying other drivers access, and ensuring
that it can be passed off to a domU when needed.

Hope that helps!

On 3/21/06, Hans-Christian Armingeon <johnny@xxxxxxxxxx> wrote:
> Hi,
> are driver domains supported with xen on amd64? I read some weeks ago, that 
> it is marked x86 specific, even if it would work on amd64, too.
> When I append pciback.hide=, it doesn't have any effect.
> Can somebody tell me, what's going on?
> Johnny
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

Dave Goodlad
dgoodlad@xxxxxxxxx or dave@xxxxxxxxxx

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