[Intel-gfx] [PATCH v3 1/2] drm/i915: introduce a mechanism to extend execbuf2

[Chris Wilson]

Quoting Lionel Landwerlin (2019-07-31 15:07:32)
> +/*
> + * Setting I915_EXEC_EXT implies that drm_i915_gem_execbuffer2.cliprects_ptr
> + * is treated as a pointer to an linked list of i915_user_extension. Each
> + * i915_user_extension node is the base of a larger structure. The list of
> + * supported structures are listed in the drm_i915_gem_execbuffer_ext
> + * enum.
> + */
> +#define I915_EXEC_EXT          (1 << 21)

On reflection, I think I915_EXEC_USE_EXTENSIONS to match
I915_CONTEXT_CREATE_USE_EXTENSIONS, and establish a pattern for the future.
-Chris