Re: vt-d p7p55d evo

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Mark Hurenkamp wrote:
> 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.
>

I'm still pretty new to Xen so it could very well be that I've 
misunderstood the requirements for certain capabilities.   I thought one 
of the wiki's had stated that to pass through to an hvm guest you have 
to have VT-d though.   Is there something specific that I which can 
indicate its status after boot?

bios: 1207
cpu: i7 860
grub2: http://pastebin.ca/1856369
xm dmesg: http://pastebin.ca/1856370
xm info: http://pastebin.ca/1856372
hvm cfg: http://pastebin.ca/1856376
I think I compiled the linux kernel at xen/stable git commit 221c4dbf86 
given the timestamp in xm info (all done same time frame)