[Intel-gfx] [PATCH 1/2] drm/i915/gtt: Enable full-ppgtt by default everywhere

[Joonas Lahtinen]

Quoting Chris Wilson (2018-06-14 23:14:18)
> We should we have all the kinks worked out and full-ppgtt now works
> reliably on gen7 (Ivybridge, Valleyview/Baytrail and Haswell). If we can
> let userspace have full control over their own ppgtt, it makes softpinning
> far more effective, in turn making GPU dispatch far more efficient and
> more secure (due to better mm segregation). On the other hand, switching
> over to a different GTT for every client does incur noticeable overhead.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> Cc: Matthew Auld <matthew.william.auld at gmail.com>

I'd love to get Acks here from Mesa folks for documentation. But for the kernel
portions and by my understanding for userspace too this is ready to go, so from
me it is:

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas