Re: [Xen-users] Xen VGA Passthrough - GTX 480 successfully quadrified to quadro 6000 (softmod) - more than 4GB of RAM for Win XP 64 Bits

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 09/17/2013 01:11 AM, David TECHER wrote:

Good to see somebody else has this working. :)

> Finally I succeeded in
>
> - quadrifying my GTX 480  into a Quadro 6000 ( softmod).
>
> - overpassing the 3-4GB of RAM on Windows XP 64 bits (domU) by applying
> a well known patch for Xen.
Can you elaborate? Are you referring to the 64-bit IOMEM remap or 
something else?
> Using nvlfash I had to alter my (OR mask 1) so I could install the
> latest driver for Quadro 6000
> (320.86-quadro-tesla-grid-desktop-winxp-64bit-international-whql.exe).
>
> I noticed that I had to do that else my domU may freez while launching
> Crysis 2.
You mean you needed the latest driver? That's odd - I have used all the 
drivers from 320.00 onward and they all worked forme. Or are you saying 
you could boot the VM with the card as a GTX480, but the game would lock 
up when starting?
I tried getting the GeForce cards to work with VGA passthrough but I 
couldn't get it working without quadrifying them. After that everything 
has "just worked" as expected.
> Everything works perfectly for the moment.
>
> I was very happy when my domU started without to apply my annoying
> patches for NVIDIA :)
I'm working on making some of those more dynamic for implementing 
e820_host for HVMs. Once that is completed it should also ensure 
vBAR=pBAR - with a bit of luck this will make GeForce cards work without 
quadrifying them.
> I will have a try for a Linux domU tomorrow (Xen PVonHVM + NVIDIA +
> Wine). This is what I want :)
Please, do report back how you get on - I don't think anyone has tried 
that before. :)
Gordan


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