Re: [Xen-users] turning nvidia gts 450 into quadro 2000

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 02/07/2014 06:57 PM, Imre Oolberg wrote:
> Hi!
>
> Gordan, big thanks, i can also confirm this technique works :)
Good. Thus far all the reports (including all of my own) are that 
GTS450, GTX470 and GTX480 mods work, as well as some other models.
> # lspci | grep 2000
> 04:00.0 VGA compatible controller: NVIDIA Corporation GF106GL [Quadro
> 2000] (rev a1)
>
> Only couple more things
>
> 1. My domU config is like this (using Ubuntu 13.10 and its Xen 4.3 with
> xl toolstack, all from package management)
>
> # cat /etc/xen/vga-win7-32.auul.cfg
> builder = "hvm"
> name = "vga-win7-32"
> memory = "3072"
> vcpus = 4
> vif = ['mac=00:16:3e:44:00:02,bridge=xenbr0,model=ne2k_pci']
> disk = ['phy:/dev/system/vga_win7_32_ss,hda,w']
> gfx_passthru=1
> pci = [ '04:00.0', '04:00.1', '00:1a.0', '00:1d.0', '00:1b.0',
> '07:00.0']
> device_model_version = "qemu-xen-traditional"
>
> where
>
> '04:00.*' - 450 -> 2000 nvidia - works
> '00:1a.0', '00:1d.0', '07:00.0' - usb devices, e.g. usb mouse works
> '00:1b.0' - audio, works
>
> Do you suggest to change something there?
Consider it works? No. :)

> (And into win7 32 bit domU i
> installed nvidia's own graphic driver + singed gplpv drivers + synergy,
> do you suggest to install something in addition?)
That should cover everything from the virtualization aspect, although I 
must say I am surprised anyone still bothers with a 32-bit OS.
> 2. when starting up windwos domU it says on the xterm
>
> libxl: error: libxl_pci.c:990:libxl__device_pci_reset: The kernel
> doesn't support reset from sysfs for PCI device 0000:04:00.0
> libxl: error: libxl_pci.c:990:libxl__device_pci_reset: The kernel
> doesn't support reset from sysfs for PCI device 0000:04:00.1
That's normal.

> I thought that it practically means that domU cant be rebooted but it
> actually works after domU stop-start too. (Strangely ubuntu domU works
> on first boot cant be booted afterwards, only after full phycial dom0
> reboot is works again, maybe its because of ubuntu domU's nouveaux
> driver, i must investigate it more.)
The driver handles the card state. The reset is only necessary if the 
driver doesn't handle the card in an undefined state. If you think about 
it properly, all you need to do to reset the device is blow away the 
contents of all of its registers. Nvidia drivers seem to be pretty good 
at handling this.
Does your Ubuntu domU run Nvidia's binary drivers or nouveau?

Gordan

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