[Xen-API] Fwd: VGA Passthrough with Linux guests

[Steven Seed <steven.seed@xxxxxxxxxxxxxxxxxxx>]

I sent this to xen-users, but someone suggested this list might have more info on my question...

I've been doing some research and have seen the success by David Techer and Teo En Ming in getting a Windows guest to work with VGA passthrough under Xen but I'm wondering if anyone has been able to get it working with a Linux guest. Specifically, I'm trying to run a RHEL 6.4 guest with a Nvidia Quadro graphics card. At the moment, I'm running XCP 6.1 which  is xen 4.1.3-1.6.10 under the covers. I'm not sure if this will work or not. I've got a hvm guest running and I've been able to assign the GPU to it. I'm at the point where the Nvidia driver loads and I can see a card in the guest with lspci, however the GPU isn't functional and I get a black screen. I think the issue may be vgabios related because if I cat /proc/driver/nvidia/gpus/0/information I get this:

Model: Quadro K5000

IRQ:   40

GPU UUID: GPU-????????-????-????-????-????????????

Video BIOS: ??.??.??.??.??

Bus Type: PCI-E

DMA Size: 32 bits

DMA Mask: 0xffffffff

Bus Location: 0000:00.06.0

If there are patches I need to make this work, I'd appreciate a pointer. I tried following Teo En Ming's document from here: 

http://wiki.xen.org/wiki/Xen_VGA_Passthrough#Status_of_VGA_graphics_passthru_in_Xen

But unfortunately, at least over the last few days, I can't get the patches referenced at http://www.davidgis.fr/download because the site is down. 

Does anyone have these patches and do you know if they can be applied to XCP 1.6?

--
-

Steven Seed

Sr Systems Engineer

Walt Disney Animation Studios

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