Re: [PATCH 03/62] drm/i915/bdw: Disable PPGTT for now

Chris Wilson
2013-11-04T14:44:25Z

On Sat, Nov 02, 2013 at 09:07:01PM -0700, Ben Widawsky wrote:
> From: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> This will be changed once the gen8 code is fully implemented.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
> drivers/gpu/drm/i915/i915_gem_gtt.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index c4c42e7..77b3c74 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -410,6 +410,8 @@ static int i915_gem_init_aliasing_ppgtt(struct drm_device *dev)
>
> if (INTEL_INFO(dev)->gen < 8)
> ret = gen6_ppgtt_init(ppgtt);
> + else if (IS_GEN8(dev))
> + ret = -ENXIO;

Later on we use ENOSYS for disabling PPGTT before it is ready. Pick one.
-Chris

--
Chris Wilson, Intel Open Source Technology Centre