Re: [Xen-devel] FreeBSD Dom0 IOMMU issues (resent)

[Michael Dexter <editor@xxxxxxxxxxxxxxxxxx>]

On 5/7/15 7:59 PM, Chen, Tiejun wrote:
> Are you running IGD passthrough with guest OS?
Only as far as the PVH Xen kernel is passing through all hardware to 
Dom0. Roger can elaborate as needed.
> What is your CPU? BDW? HSW? And what is your FreeBSD Linux version on
> Dom0 side? I just think you can directly try the latest upstream Linux
> as Dom0, because I see so many messages indicating GPU hang.
My output has dmesg information for this purpose. Most output is from:

CPU: Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz (2790.93-MHz K8-class CPU)
Lenovo ThinkPad T420

The second system is:

CPU: Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz (2500.02-MHz K8-class CPU)
Intel DQ67EP Mini-ITX board

Both systems are recent FreeBSD 11 snapshots, the Dom0:

FreeBSD 11.0-CURRENT #0 r282110: Mon Apr 27 20:49:15 UTC 2015

The DomU:

FreeBSD 11.0-CURRENT #0 r280862: Mon Mar 30 20:15:11 UTC 2015

I have not tried GNU/Linux but could if you like. Is there a preferred 
distribution for use with Xen?
> So maybe you need to upgrade DRM/I915 driver firstly.
Any and all help from Intel at keeping the FreeBSD graphics drivers up 
to date is appreciated. FreeBSD 11 HEAD represents the latest drivers. I 
believe I have tried this under NVidia with similar results. I can run a 
test if you like.
All the best,

Michael Dexter


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