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

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Mark Hurenkamp wrote:
> > 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)
> From your earlier mail, it was not clear wether you were indeed using 
> hvm, and that xen enabled vt-d properly.
> From your xm dmesg, and xm info, it is clear that iommu is indeed 
> enabled for you, something which i've not been able to achieve with my 
> board.
> Could the CPU make a difference here? I'm on a i5 750, and notice you 
> are using an i7 860....
> I'll see if i can do some more experiments with my setup, perhaps 
> switching back a few changesets to 4.0-rc8.
> I'm not sure if the kernel makes a difference, but i'll see if i can 
> match your configuration as close as possible.
> Thanks for your input!
>
>
> Mark.
according to this chart (and thread) the i5 doesn't support VT-d, 
http://i683.photobucket.com/albums/vv199/OvrClkr/i5_chart.png
link source: http://www.tomshardware.com/forum/274342-28-tomshardware




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