[Xen-users] VGA passthrough problem

[Tanaka Toshimitsu <t_tanaka@xxxxxxxxxxxxxxxx>]

Hi,

I installed Xen 4.0 on Dell Optplex 755(Intel Q35 chipset).
The NIC passthrough succeeded.
Next, I tried VGA passthrough of Intel IGD graphics. 

00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express Integrated 
Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82Q35 Express Integrated Graphics 
Controller (rev 02)

However, when gfx_passthru is enabed, the xm create command reports error. 

$ sudo xm create /etc/xen/xp.hvm 
Using config file "/etc/xen/xp.hvm".
Error: (22, 'Invalid argument')

Any ideas?

Domein-0 : Ubuntu 9.04(64-bit), 2.6.31.13 kernel
Guest : Windows XP(32-bit)

/boot/grub/menu.list:
title           Xen
uuid          a97f93fe-e4f9-4c4c-b287-5b2bac738165
kernel       /boot/xen.gz iommu=1 dom0_mem=2048M
module     /boot/vmlinuz-2.6.31.13 
root=UUID=a97f93fe-e4f9-4c4c-b287-5b2bac738165  ro nomodeset  
xen-pciback.hide=(00:02.0)(00:02.1)
module     /boot/initrd.img-2.6.31.13

/etc/xen/xp.hvm:
gfx_passthru=1
pci=[ '00:02.0','00:02.1' ]


Thanks,
---
Toshimistu Tanaka
t_tanaka@xxxxxxxxxxxxxxxx
http://toshi3.cocolog-nifty.com/blog/



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