[Xen-devel] Re: vt-d p7p55d evo

[Mark Hurenkamp <mark.hurenkamp@xxxxxxxxx>]

Hi,


> I'm not a subscriber to xen-devel yet, but did see your post about  
> the evo and iommu not working.   Within the last week I have  
> installed a xen 4.0rc8 and xen/stable clone kernel 2.6.32.10 and  
> boot ok with iommu=1 and have also successfully passed through a tv  
> tuner card tonight which modules did load for.  I did have one weird  
> quirk though.  I haven't tested the card in the domu yet.  Anyway if  
> you want to discuss this further then reply back.
Are you sure you are using VT-d here (are you using hvm loader)? I'd  
be very interested to know what Bios version you are using, what your  
'xm dmesg' and 'xm info' output is (after boot), and the xen  
configuration file for your VM.
Cause although my system can boot fine with enabled iommu now, it is  
simply switched off by xen at boottime... Did you do something special  
to force it to on? Do you have any patches installed?
Btw, passthrough of a tuner device to a pvm domU is not a problem  
here, but that does not require VT-d (nor VT-x).
Did you manage to passthrough a device to Windows?
My ultimate goal is to passthrough a (secondary) usb card, and a  
(secondary) graphics card, to a Windows hvm.
Mark.


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