Re: [Xen-devel] Experimental results for VGA passthrough

[Jean Guyader <jean.guyader@xxxxxxxxx>]

We have a patch to the FLR support to pciback.
http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=blob_plain;f=master/pciback-flr;hb=HEAD

Jean

2009/6/6 Beng Heng, Ng <bengheng@xxxxxxxxxxxxxx>:
> Apologies, I missed your earlier point about the FLR. I'll try that out.
> Thanks.
>
> - Beng Heng
>
> Beng Heng, Ng wrote:
>> Hi Jean,
>>
>> For the linux guest, I tested using Ubuntu 64-bit. It doesn't seem to
>> work well, and hangs shortly after boot-up. I've attached a short clip
>> and hopefully that can explain my observations better. I've also
>> attached logs from the serial terminal and Qemu. I'd like to bring your
>> attention to the last lines of the Qemu log, which warns that the guest
>> is trying to write to unused BAR.
>>
>> On the other hand, things are much smoother with Vista 64-bit. I have
>> tried no less than three times, and all went smoothly. Even the
>> resolution, color and Aero feature are equivalent to native. The only
>> minor issue is that after shutdown, the screen becomes blank. But I
>> suppose this is better than XP which was "stuck" in the shutdown screen.
>> I have the logs and clip for Vista as well. As the clip is bigger, I'll
>> only send it to you if you want.
>>
>> Please let me know if there's any comments or suggestions which you'd
>> like me to try out. Thanks and have a great weekend.
>>
>> Warmest Regards,
>> Beng Heng
>>
>> Jean Guyader wrote:
>>> Could you tell me if it works with a Vista guest or a linux hvm guest?
>>>
>>> The page fault and the screen still stays on Windows issue are due to
>>> the lack of FLR in your kernel. Doing a FLR on the graphic card before
>>> booting and when the domain shutdown will fix those.
>>>
>>> Thanks,
>>> Jean
>>>
>
>

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