[Intel-gfx] [PATCH] drm/i915/selftests: Check that registers are preserved between virtual engines

[Chris Wilson]

Quoting Chris Wilson (2019-10-10 11:36:57)
> Make sure that we copy across the registers from one engine to the next,
> as we hop around a virtual engine.

Looking at Broadwell's HW context image, there are no GPR registers for
xcs. Weird.
-Chris