[Intel-gfx] dg1 flag for userspace to allocate contig resources

[Matthew Auld]

On 11/09/2020 06:42, Dave Airlie wrote:
> I've just been looking at the current DG1 uapi, and I can't see any
> flag to allow userspace to upfront say it was a contiguous vram BO.
> 
> I think you'd really want this for scanout, since otherwise you'll
> have to migrate any non-contig to contig when it transitions to
> scanout, and cause an extra set of copies.

Hmm, why do we need physically contiguous memory for scanout? From hw 
pov it's seen through the GTT.

> 
> Dave.
>