Robert Dunkley
2009-Nov-02 08:37 UTC
[Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d
Hi Everyone, Sorry to bother the Dev list for this but no one seemed to know on the User list. When using this card in PCI passthrough can you pass individual ports to different VMs? Or do you have to pass 2 or the entire 4 ports at a time when using PCI passthrough? Thanks, Rob The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ SAQ is the trading name of SEMTEC Limited. Registered in England & Wales Company Number: 06481952 http://www.saqnet.co.uk AS29219 SAQ Group Delivers high quality, honestly priced communication and I.T. services to UK Business. Broadband : Domains : Email : Hosting : CoLo : Servers : Racks : Transit : Backups : Managed Networks : Remote Support. ISPA Member _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Simon Horman
2009-Nov-02 09:21 UTC
Re: [Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d
On Mon, Nov 02, 2009 at 08:37:03AM -0000, Robert Dunkley wrote:> Hi Everyone, > > > Sorry to bother the Dev list for this but no one seemed to know on the > User list. When using this card in PCI passthrough can you pass > individual ports to different VMs? Or do you have to pass 2 or the > entire 4 ports at a time when using PCI passthrough?Hi Robert, you should certainly be able to pass through only one of the ports, and I expect you should be able to pass through different ports to different VMs. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Robert Dunkley
2009-Nov-02 09:41 UTC
RE: [Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d
Hi Simon, Thanks for the informative response. A kind of related question.... Does anyone know the minimum required kernel and Xen versions for PCI pass through to work on the new AMD chipsets? Thanks, Rob -----Original Message----- From: Simon Horman [mailto:horms@verge.net.au] Sent: 02 November 2009 09:22 To: Robert Dunkley Cc: xen-devel@lists.xensource.com Subject: Re: [Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d On Mon, Nov 02, 2009 at 08:37:03AM -0000, Robert Dunkley wrote:> Hi Everyone, > > > Sorry to bother the Dev list for this but no one seemed to know on the > User list. When using this card in PCI passthrough can you pass > individual ports to different VMs? Or do you have to pass 2 or the > entire 4 ports at a time when using PCI passthrough?Hi Robert, you should certainly be able to pass through only one of the ports, and I expect you should be able to pass through different ports to different VMs. The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ SAQ is the trading name of SEMTEC Limited. Registered in England & Wales Company Number: 06481952 http://www.saqnet.co.uk AS29219 SAQ Group Delivers high quality, honestly priced communication and I.T. services to UK Business. Broadband : Domains : Email : Hosting : CoLo : Servers : Racks : Transit : Backups : Managed Networks : Remote Support. ISPA Member _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Simon Horman
2009-Nov-02 10:05 UTC
Re: [Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d
On Mon, Nov 02, 2009 at 09:41:45AM -0000, Robert Dunkley wrote:> Hi Simon, > > > Thanks for the informative response. > > A kind of related question.... > > Does anyone know the minimum required kernel and Xen versions for PCI > pass through to work on the new AMD chipsets?Hi Rob, I would try Xen 3.4.1 + the 2.6.18 (ancient, I know) kernel. Failing that you are probably in xen-unstable territory as there have been a lot of changes to pass-through since the last stable release. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Konrad Rzeszutek Wilk
2009-Nov-02 14:27 UTC
Re: [Xen-devel] Intel ET Quad Port NIC - PCI Passthrough / VT-d
On Mon, Nov 02, 2009 at 08:21:38PM +1100, Simon Horman wrote:> On Mon, Nov 02, 2009 at 08:37:03AM -0000, Robert Dunkley wrote: > > Hi Everyone, > > > > > > Sorry to bother the Dev list for this but no one seemed to know on the > > User list. When using this card in PCI passthrough can you pass > > individual ports to different VMs? Or do you have to pass 2 or the > > entire 4 ports at a time when using PCI passthrough? > > Hi Robert, > > you should certainly be able to pass through only one of the ports, > and I expect you should be able to pass through different ports to > different VMs.It depends also if you machine does MSI/MSIx. If you do, then yes - each port to each guest. If you can''t do MSI/MSIx then you need to pass the PCI devices that share the same IRQ to the guest. Which in most cases means you need to share two ports per guest.> > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel