Re: [Qemu-devel] [RFC][PATCH 1/1] libxl: add one machine property to support IGD GFX passthrough

["Chen, Tiejun" <tiejun.chen@intel.com>]

On 2015/1/23 8:43, Chen, Tiejun wrote:
> On 2015/1/22 8:51, Chen, Tiejun wrote:
>> On 2015/1/21 21:48, Gerd Hoffmann wrote:
>>> On Mi, 2015-01-21 at 11:37 +0000, Ian Jackson wrote:
>>>> Tiejun Chen writes ("[RFC][PATCH 1/1] libxl: add one machine property
>>>> to support IGD GFX passthrough"):
>>>>> When we're working to support IGD GFX passthrough with qemu
>>>>> upstream, instead of "-gfx_passthru" we'd like to make that
>>>>> a machine option, "-machine xxx,gfx_passthru=on". This need
>>>>> to bring several changes on tool side.
>>>>
>>>> Has the corresponding patch to qemu-upstream been accepted yet ?
>>>>
>>>> I'd like to see a confirmation from the qemu side that this is going
>>>> into their tree and that the command-line option syntax has been
>>>> agreed.
>>>
>>> Suggested at patch review, not merged (guess thats why it is tagged
>>> 'rfc', to get both qemu+xen on the same page).
>>
>> Yeah, this is exactly what I intended to do here :)
>>
>>>
>>> While being at it:  Should we name this 'igd-passthru' instead of
>>> 'gfx-passthru'?  The hostbridge / isabridge quirks needed are actually
>>> specific to igd and are not needed for -- say -- nvidia gfx cards.
>>>
>>
>> At this point I just concern here if we still use 'gfx_passthrou', at
>> least it may look like a backward compatibility with older versions of
>> qemu in Xen side, qemu-xen-traditional. But I'd like to follow your
>> final option.
>>
>
> Any feedback to this option I should follow here?
>

Ping...

Thanks
Tiejun