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

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

On 2015/1/22 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?

Thanks
Tiejun