Re: Test with VT-d patches

["Yang, Sheng" <sheng.yang@intel.com>]

On Tuesday 02 September 2008 16:44:18 gg@seh.de wrote:
> Hi,
>
> i am interested in the use of the new VT-d hardware feature.
> My Dell-PC "OPTIPLEX" is capable for this.
> The Linux-System was an Ubuntu-8.10 (AMD64) with the current
> Linux-Kernel from the KVM-Kernel GIT repository. (2.6.27-rc4)
> To use VT-d i download kvm-74 and take the patches from "Amit Shah".
> 1) The KVM/userspace [PATCH1/1] was applied without errors.
> 2) The VTD [PATCH1/2] seems already be applied.
> 3) The VTD [PATCH2/2] was applied without errors.
>
> Now I use the command line option -pcidevice dev=00:03.19 to pass the
> Intel Pro Gigabit Network Device to my WindowsXP Guest-System.
>
> Qemu told me something like: "passing 00:03.19 as device 00:03.00 to the
> guest system". Windows starts normally fast. But then its slow rapidly
> down. My mouse stops for about 10sec and then goes again for 1sec.
>
> Windows remember the new hardware correctly. And after i install the new
> driver, the system seems to go a little bit faster.
>
> But the problem was, that no ping or other network packages was
> send/received.
>
> What can i do to find the problem? (Debugging?)

Hi Gregor

Can you have a look at your dmesg and post it here? I think we can got some 
clue. 

Thanks!
--
regards
Yang, Sheng
>
> Regards,
>
> Gregor Glomm
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