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Re: [Xen-devel] [Xen-users] Xen VGA PassThrough - GTX 860 card - big size for VGA BIOS

  • To: David TECHER <davidtecher@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
  • From: David TECHER <davidtecher@xxxxxxxx>
  • Date: Sun, 15 Jul 2012 12:00:31 +0100 (BST)
  • Cc: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
  • Delivery-date: Sun, 15 Jul 2012 11:01:12 +0000
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I will reply to myself.

Gigabyte GTX 680 OC is the only one graphic card provided with a vga bios size of 64k. The other cards vga bios size is 184k.

Even if it is possible to do that...There is an issue with all NVIDIA drivers

- On Linux(32) driver will compil and install - GPU is OK-

- On Linux(32) the X server will  crash with the following error "GPU ...... is not supported"

De : David TECHER <davidtecher@xxxxxxxx>
À : "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
Cc : "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
Envoyé le : Samedi 14 juillet 2012 4h52
Objet : [Xen-users] Xen VGA PassThrough - GTX 860 card - big size for VGA BIOS


Last patches for Nvidia and Xen 4.2 unstable could be found at http://www.davidgis.fr/download/xen-4.2_rev25240_gfx-passthrough-patchs.tar.bz2

It works for GTX 560 Ti.

Due to changeset 25525, don't forget to add this parameter to your configuration file
pci_msitranslate = 1

I plan to test GTX 680.

On Internet I discovered that all EEPROM - related to GTX 680 - for all GTX 680 cards  have a size of 184KB whereas for my GTX 560Ti the size is 64 KB.
Exception is for Gigabyte GX 680 OC (first bios version).

What are the expected changes to do in Xen sources so that Xen could handle a size of 184KB for a GTX 680 card?

Kind regards.


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