Test with VT-d patches

DISCUSSION [email protected] 3 participants 3 messages Sep 2, 2008 KVM

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[email protected]

author

2008-09-02 08:44 UTC #0 lore raw

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?)

Regards,

Gregor Glomm

Yang, Sheng

2008-09-02 11:31 UTC #1 lore raw

Quoted 18 lines · On Tuesday 02 September 2008 16:44:18 [email protected] 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.

Quoted 7 lines

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

Quoted 8 lines

Regards,
Gregor Glomm
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Han, Weidong

2008-09-02 13:37 UTC #2 lore raw

Hi Gregor,

You'd better set the loglevel=8 to print debug information. Can you also try linux guest?

Randy (Weidong)

Quoted 45 lines · Sheng

Quoted 19 lines · On Tuesday 02 September 2008 16:44:18 [email protected] 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.
Quoted 7 lines
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
Quoted 8 lines
Regards,
Gregor Glomm
--
To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html