Quoting Chris Wilson (2019-05-31 19:11:29)
> As the fence registers are not part of the engine powerwells, we do not
> need to fiddle with forcewake in order to update a fence. Avoid using
> the heavyweight debug checking normal mmio writes as the checking
> dominates the selftest runtime and is su
As the fence registers are not part of the engine powerwells, we do not
need to fiddle with forcewake in order to update a fence. Avoid using
the heavyweight debug checking normal mmio writes as the checking
dominates the selftest runtime and is superfluous!
In the process, retire the I915_WRITE()