Re: iommu: mapping reserved region failed - Q35 -VT-DIssue

[Stefan Bauer <stefan.bauer@cubewerk.de>]

Han, Weidong schrieb:
> Why it's so short? Can post complete output?

I expected also an even bigger output, but it shows debug=n even
though i enabled it with loglvl=all loglvl_guest=all

Please see the new complete output here:

www.plzk.de/CAPTURE.TXT

> I suspect your environment is not incorrect in somewhere. Pls list the following info: platform, BIOS, dom0 changeset, Xen changeset, did you add-on extra graphics card? did you follow steps listed in docs/misc/vtd.txt?

64BIT Debian stable (etch)
Lenovo Thinkcentre M57 - Typ 6075-BQG
Bios Version 2RKT54AUS
Bios Date 08/20/2008
Dom0 is 2.6.18.8-xen Kernel with Xen 3.4 xen-unstable.hg, plain
installation without any modifications at all

One HVM guest for testing, windows 2000 with pci = [ ' 01:00.0' ] line
in its configuration.

I add a pci graphic card for testing purpose to have vga output in
case i hide the pci-e card. that pci card is not used for passthrough.

I followed steps listed in
http://lxr.xensource.com/lxr/source/docs/misc/vtd.txt but came to the
conclusion that it might have something to do with Base Address Register?


> Actually, latest Xen VT-d is quite stable in our recent testing.
I wish here too.

Regards

-- 
Stefan