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[Xen-users] VT-d success - passing PCI TV tuner to Windows DomU

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Darren Foo <darrenfoo@xxxxxxxxx>
  • Date: Sat, 24 May 2008 12:36:27 -0700 (PDT)
  • Delivery-date: Sat, 24 May 2008 12:36:59 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi all,

Thought I'd share my success with VT-d. I picked up an Asus P5E-VM DO 
motherboard as it was relatively cheap and had an extra PCI slot compared to 
the Intel Q35 board. The people on #xen IRC were very helpful. I wasted 2 days 
trying to get things working on Ubuntu and OpenSUSE with forward patched 
versions of Xen for newer kernels. Ended up using CentOS 5.1 which has the 
requred 2.6.18 kernel and compiled from the mercurial source. I iniitially 
tried compiling Xen in the prepackaged Centos installer Dom0, but the resulting 
xend would show ACM errors even though ACM was turned off in the compile 
options. I ended up blowing the install away and installing vanillia CentOS 5.1 
without the prepackage Xen and the compile worked fine. 

Wasted a few hours because the VT-d wiki was missing the vtd=1 kernel option. I 
updated the wiki to include vtd=1 it as well as added the Asus mobo as a 
supported mobo.  Hope it saves others some time. I'm surprised how well it's 
working, I'm passing a TV tuner card to my Windows XP SP3 DomU and it works 
just as well as my old native Windows install. I'm currently having some issues 
with the GPLPV drivers but I have outlined my issues in James Harper's release 


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