[Intel-gfx] [PATCH v11 1/1] vfio: ABI for mdev display dma-buf operation

[Zhenyu Wang]

On 2017.07.19 00:55:19 +0000, Zhang, Tina wrote:
> > 
> > Of course we need that modifier for complete format info. Don't just think for
> > i915 usage, there's possible modifier for other vendor driver, and it's required
> > for e.g ADDFB2 in drm kms. Pls add it back in next version.
> We definitely can add it back if it is thought to be useful. Just some curious, as we don't produce the content in the GEM buffer (a.k.a we just expose it here), why we need to know the tile mode. In addition, DRM API can support the functionality to get the tile mode ot GEM buffer. 
> 

That's vendor driver specific ioctl API instead of DRM API.
And besides tiling there could be other vendor's modifiers
which need to be kept for complete info.

-- 
Open Source Technology Center, Intel ltd.

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