[Xen-devel] Re: Nvidia 9500GT Xen VGA passthru

[Anish Patel <anish.mailing.list@xxxxxxxxx>]

Hi All,
    I will post the full patch set soon there are still a couple of 
bugs i need to work out.
System -
Phenom x6 2.8
16 gig DDR3
BIOSTAR 890FX board with latest bios.
Dom 0 config
    4 cores, ATI 5450 with open source drivers.

Dom U
 WinXP HVM, 5770 passed through to Dom, 2 cores, 2 gigs memory.

Please give me a couple days and i will post a full write up

I can probably get this to work with the nvidia card as well, but need 
to figure out the pBAR/vBAR stuffs.
Thanks
Anish

On 02/01/11 14:55, Pasi Kärkkäinen wrote:
> On Tue, Feb 01, 2011 at 02:26:33PM -0500, Anish Patel wrote:
> > Hi All,
> >      I have managed to get the 2nd vga passed though.  I had to use
> > AMD/ATI card to get this done.
> Nice!
>
> Please post the details:
>
> - VGA card model
> - Xen version
> - Dom0 kernel version
> - DomU OS/version/kernel
> - Any custom/additional patches used
>
>
> -- Pasi
>
> > Thanks
> > Anish
> >
> > On 01/31/11 14:26, Pasi Kärkkäinen wrote:
> > > On Mon, Jan 31, 2011 at 11:39:51AM -0500, Anish Patel wrote:
> > > > I have this almost working now,   I think the only thing that i need to
> > > > change is to add a gfx_passthru=2 option to let xen know not to read
> > > > from /dev/mem then an option to tell it what VGA rom to use.   Are there
> > > > any patches for 4.01 for this?
> > > I think gfx_passthru can only use 0 or 1 nowadays.
> > >
> > > Patches probably need to be forward-ported to current Xen..
> > > most of them are for xen-unstable from the Xen 3.5 days..
> > >
> > > -- Pasi
> > >
> > > > Thanks
> > > > Anish
> > > > On 01/31/11 06:50, Pasi Kärkkäinen wrote:
> > > > > On Sun, Jan 30, 2011 at 12:42:56AM -0500, Peter van der Maas wrote:
> > > > > > I really have not played with too much after the proof of concept.  I do recall 
> > > > > > something eventually breaking the config, perhaps a Xen update.  I've since put 
> > > > > > the hardware to better use, although I am still intrigued by Xen.  At the time, 
> > > > > > I was working with a team that was giving serious consideration to virtualizing 
> > > > > > their platform, and what better way to learn than dig in and get my hands dirty.
> > > > > >
> > > > > > I tried to include as much detail at the time, with the plethora of different 
> > > > > > Xen builds, BIOS's updates, etc.
> > > > > >
> > > > > > If someone has something specific I can try to help, but doubtful I will be of 
> > > > > > any use.  For example, I did not realize Xen 4.x was even released.  Recent 
> > > > > > projects I've been working on do not lend themselves well to virtualization; 
> > > > > > however, I might have to give Xen 4.0 shot - just to play, of course.  There 
> > > > > > were some serious changes happening with Xen, the Linux kernel, and KVM when I 
> > > > > > stopped playing.
> > > > > Ok.
> > > > >
> > > > > I mainly meant if you remember what custom patches did you have to use/create?
> > > > > Most probably you had to do some vBar=pBar hacking, right?
> > > > >
> > > > > I guess I'll have to try this myself one day and document the process
> > > > > with current Xen versions..
> > > > >
> > > > > -- Pasi
> > > > >
> > > > >
> > > > > > Sorry I could not be of more help.
> > > > > >
> > > > > > Peter van der Maas
> > > > > > peter&pjv-c.com
> > > > > >
> > > > > > -----Original Message-----
> > > > > > From: Pasi Kärkkäinen [mailto:pasik@xxxxxx]
> > > > > > Sent: Saturday, January 29, 2011 2:04 PM
> > > > > > To: Peter van der Maas
> > > > > > Cc: xen-users@xxxxxxxxxxxxxxxxxxx; anish.mailing.list@xxxxxxxxx; 
> > > > > > xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > > > Subject: Nvidia 9500GT Xen VGA passthru
> > > > > >
> > > > > >
> > > > > > Hello Peter,
> > > > > >
> > > > > > Some people have been asking for tips about Nvidia Xen VGA passthru,
> > > > > > so maybe you could help?
> > > > > >
> > > > > > Could you post the exact steps you did?
> > > > > >
> > > > > > Have you tried with Xen 4.0.x after your initial experiments in 2009?
> > > > > >
> > > > > > Thanks!
> > > > > >
> > > > > > -- Pasi
> > > > > >
> > > > > > On Mon, Jan 26, 2009 at 02:16:32PM -0500, Peter J. van der Maas wrote:
> > > > > > >       I am happy to announce that I have successfully (and finally!) been able
> > > > > > >       to pass a PCIe graphics card via VT-d to a Windows XP HVM DomU.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       About time!
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       Config:
> > > > > > >
> > > > > > >       -Intel Q6600 Core 2 Quad-Core, G0 stepping (I think)
> > > > > > >
> > > > > > >       -Intel DQ35JO Motherboard, Q35 Chipset, BIOS v.991 (1/9/09), VT and VT-d
> > > > > > >       enabled
> > > > > > >
> > > > > > >       -nVidia 9500GT (for VT-d passthrough - DomU)
> > > > > > >
> > > > > > >       -nVidia GeForce2 MX200 (Dom0 console)
> > > > > > >
> > > > > > >       -Xen (build: xen-unstable, recent as of ~ 1/25/09 1:00AM-EST)
> > > > > > >
> > > > > > >       -Dom0: Linux-2.6.18.8-xen (via xen-unstable.hg)
> > > > > > >
> > > > > > >       -DomU: Windows XP (pro, sp3, 32-bit)
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       Once the VT-d bugs were recently corrected (thank you, xen-devel!),
> > > > > > >       everything went fairly smoothly.  Still very buggy yet (its
> > > > > > >       xen-unstable!), but overall it works.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       Make sure support for the PCI-backend is compiled into the kernel (not
> > > > > > >       just a module) and that you have your pciback.hide options in grub
> > > > > > >       (late-binding may work, but I haven't tried).
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       Good luck!
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >       -Peter van der Maas
> > > > > > > _______________________________________________
> > > > > > > Xen-users mailing list
> > > > > > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > > > > > http://lists.xensource.com/xen-users

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