The last few days i played some more with the vt-d feature enabled on
I'm now able to passthrough an usb controller to a windows xp hvm.
When i plug
a usb drive into a slot controlled by that controller, windows behaves
Passing through a hda-intel device (from my graphics card) seems to at
recognised properly by windows, and windows is able to install the
verify that it is actually playing audio, since the graphics card
itself can't be passed
through yet, and thus the connected monitor is in standby).
So as far as i can tell, vt-d is working fine now on this system.
Passthrough of the secondary graphics card to windows, doesn't seem to
(well, i guess that's to be expected at this stage, since i've only
it through as a normal pci card, and i think it needs an extra flag
set in the config
and some patches in xen, as well as passing along a bios file).
Strange thing i noticed though, when i try to boot windows with the
card listed in its pci section, my primary X session will reset, and
i'm presented the gdm
login screen... (primary & secondary graphics card are both hd4350).
Another strange thing i noticed, is that when i kill windows using xm
it won't boot with the graphics card listed), i am not able to start
it again later, not even
after removing the pci devices from the config.
Only after a machine reboot, things will work normal again.
Next on my list: try passthrough of the primary graphics card...
On Apr 9, 2010, at 1:57 AM, Mark Hurenkamp wrote:
I replaced the i5 with an i7 CPU, and now xen seems to enable vtd
i have yet to test the feature with my board, but xm info now shows
host : coruscant
release : 184.108.40.206mh18
version : #10 SMP PREEMPT Wed Apr 7 23:57:39 CEST 2010
machine : x86_64
nr_cpus : 8
nr_nodes : 1
cores_per_socket : 4
threads_per_core : 2
cpu_mhz : 3660
virt_caps : hvm hvm_directio
total_memory : 7975
free_memory : 2425
node_to_cpu : node0:0-7
node_to_memory : node0:2425
node_to_dma32_mem : node0:1310
max_node_id : 0
xen_major : 4
xen_minor : 0
xen_extra : .0
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : Wed Apr 07 12:38:28 2010 +0100
xen_commandline : console_to_ring com1=115200,8n1 console=com1
cc_compiler : gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9)
cc_compile_by : root
cc_compile_domain : karpeer.net
cc_compile_date : Wed Apr 7 23:16:01 CEST 2010
xend_config_format : 4
On Monday 05 April 2010 11:24:36 pm Sander Eikelenboom wrote:
I guess that's your problem, your cpu doesn't seem to support VT-D,
Both CPU, chipset and bios most support it ...
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