Re: [Xen-users] VT-Support error

[Net Warrior <netwarrior863@xxxxxxxxx>]

On 07/12/10 15:00, Daniel Kao wrote:
>  On 7/12/2010 10:54 AM, Net Warrior wrote:
>> Hi there..
>> I've got the folowing error while trying to assign the video card from
>> Dom0 to DomU
>>
>> Using config file "/etc/xen/winkk".
>> Error: failed to assign device: maybe the platform doesn't support VT-d,
>> or VT-d isn't enabled properly?
>>
>> What Am I missing? obviously I've got VT support enable, cuz I was able
>> to create the Windows DomU.
>>
>> Config file
>> pci=[ '01:05.0' ]
>>
>> lspci
>> 01:05.0 VGA compatible controller: ATI Technologies Inc Device 9710
>>
>> grub config
>>
>> module /boot/vmlinuz-2.6.31.13 ro root=/dev/sda1
>> xen-pciback.hide=(01:05.0)
>>
>> Anyway xm pci-list-assignable-devices show nothing, what's wrong?
>>
>>
>> Thanks is advance
>> Regards
>
> VT-d support (PCI passthrough) is a subset of VT-x support.  Not all
> chipsets support VT-d nor is it required for full-virtualization of
> guests. (i.e. Windows)
>
> Cheers,
> Daniel
>
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I do not understad, what does it mean? that I shoud not be getting that
error and should be able to pass-throught the decive to my DomU?
Reading this -  http://wiki.xensource.com/xenwiki/VTdHowTo, also added
iommy=1 to grub, but no luck, still do not get
why xm pci-list-assignable-devices show nothing, at least should show
01:05.0, in xen pci backend mode also used Virtual PCI just to test,
same behavior.


I'm using
2.6.31.13 #7 SMP Mon Jul 12 15:33:25 ART 2010 x86_64 AMD Athlon(tm) II
X4 630 Processor AuthenticAMD GNU/Linux

All xen options compiled embeded, not modules/initramfs used.

Regards


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