[Intel-gfx] [PATCH v5] drm/i915: Remove i915.enable_ppgtt override

[Chris Wilson]

Quoting Joonas Lahtinen (2018-09-27 09:20:06)
> Quoting Chris Wilson (2018-09-26 23:12:22)
> > Now that we are confident in providing full-ppgtt where supported,
> > remove the ability to override the context isolation.
> > 
> > v2: Remove faked aliasing-ppgtt for testing as it no longer is accepted.
> > v3: s/USES/HAS/ to match usage and reject attempts to load the module on
> > old GVT-g setups that do not provide support for full-ppgtt.
> > v4: Insulate ABI ppGTT values from our internal enum (later plans
> > involve moving ppGTT depth out of the enum, thus potentially breaking
> > ABI unless we document the current values).
> > 
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> > Cc: Matthew Auld <matthew.auld at intel.com>
> > Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com> #v3
> 
> + Jani for awareness when handling dinq, this solidifies existing uAPI
> And drops the reporting of 48-bit ppGTT through this getparam as we
> already have context specific I915_CONTEXT_PARAM_GTT_SIZE for that and
> no known abusers for the unintended reporting outside 0,1,2 set.

Are we past the 4.20 cutoff? I'd rather have this in 4.21 so that we
have a cycle in front of users before sealing the transition.
-Chris