[Intel-gfx] [RFC v1] drm/i915: Add Exec param to control data port coherency.

[Chris Wilson]

Quoting Tomasz Lis (2018-03-19 12:37:35)
> The patch adds a parameter to control the data port coherency functionality
> on a per-exec call basis. When data port coherency flag value is different
> than what it was in previous call for the context, a command to switch data
> port coherency state is added before the buffer to be executed.

So this is part of the context? Why do it at exec level? If exec level
is desired, why not whitelist it?
-Chris