Re: [RFC PATCHv2 0/3] dma_buf import support for vgem

On Wed, Apr 26, 2017 at 02:12:27PM -0700, Laura Abbott wrote:

Hi,

This is v2 of my proposal to add dma_buf import functions for vgem. Big changes from v1:

• A device is required for dma_buf attach to work. The existing vgem driver

intentionally does not use one as it provides a good way to test the DRM framework. This approach instead puts a dummy platform device in the existing drm_device->platformdev field and uses that for attaching.

• Native vgem buffers can still be faulted in a page at a time without

requiring the entire buffer be resident in memory.

I'm still marking this as RFC as I haven't had a chance to finish a userspace test that can be integrated into igt.

Note, that it will be good to cc:intel-gfx@ so that our CI does run it over the existing vgem tests. -Chris