RE: [Xen-users] XCP: PCI pass through Howto

[Dave Scott <Dave.Scott@xxxxxxxxxxxxx>]

Hi James,

 

That should be it… but it is a bit experimental J

 

The device should be hidden from dom0 when the VM is started. I imagine this might fail if the device is in use.

 

I last tested it with HVM (SLES10 IIRC) on a VT-d system, after adding ioemmu=1 onto the xen commandline (it’s not the default). It ought to work with PV as-is.

 

Could you give more details about what you tried? You might find useful information in /var/log/xensource.log, especially if you grep for “PCI”.

 

Cheers,

Dave

 

From: James Troup [mailto:james@xxxxxxxxxxxxxxxxx]
Sent: 24 February 2010 12:58
To: Dave Scott
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] XCP: PCI pass through Howto

 

Hi Dave,
is there any more to it than that?

Do I have to hide the device from, dom0.

I tried as you suggested but I cannot see the device in domU

Am I missing something?

Does this rely on VT-d ?
Does it only apply to HVM?

Thanks,
James

----- Original Message -----
From: "Dave Scott" <Dave.Scott@xxxxxxxxxxxxx>
To: "James Troup" <james@xxxxxxxxxxxxxxxxx>
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, 24 February, 2010 8:33:22 PM
Subject: RE: [Xen-users] XCP: PCI pass through Howto

Hi,

 

The only documentation is currently in the code L

 

Try a command like:

 

xe vm-param-set uuid=<uuid> other-config:pci=0/0000:00:00:0

 

and then start the VM. (Change that PCI bus path to be the one you actually want to use)

 

http://xenbits.xen.org/xapi/xen-api.hg?file/a8decf9d3bee/ocaml/xapi/vmops.ml (line 483, pcidevs_of_vm)

 

Cheers,

Dave

 

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of James Troup
Sent: 24 February 2010 07:18
To: xen-users
Subject: [Xen-users] XCP: PCI pass through Howto

 

Hi,
where can I find out about the experimental PCI pass-through in XCP?

I do not seem to be able to find any documentation.

Thanks.

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