[Intel-gfx] [PATCH v2 2/2] drm/i915/tgl: Gen12 csb support

[Chris Wilson]

Quoting Mika Kuoppala (2019-08-06 15:06:09)
> I remember doing a patch where we read full 64bit at a time,
> as we use upper part in tracing as well on gen < 12.
> Could be that Chris didn't like it. But now with doing a csb
> parsing function pointer for each gen range, it could fly.

Tracing doesn't exist in production, but if you can show me gcc prefers
one way or another, I'm easily convinced.

* reminder to self, get retpolines and see what happens
-Chris