[igt-dev] [PATCH i-g-t v2] lib/igt_fb: Don't use blitter for large buffers

[Chris Wilson]

Quoting Ville Syrjala (2018-09-11 15:29:23)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> The blitter stride is limited to <32k. Fall back to gtt mmap if we're
> about to exceed that.
> 
> This won't work for Yf as the fence doesn't know about Yf. So for that
> case we'd need to use cpu mmap and (de)tile manually. For now just
> pretend that there is no problem.
> 
> v2: Throw in some warnings for gtt mmap vs. yf tiling (Chris)

Lgtm,
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> #v1
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris