From 5c5f645773b6d147bf68c350674dc3ef4f8de83d Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 14 Apr 2015 17:35:14 +0200
Subject: [PATCH] drm/i915: Unify aliasing ppgtt handling

With the dynamic pagetable alloc code aliasing ppgtt special-cases
where again mixed in all over the place with the low-level init code.

Extract the va preallocation and clearing again into the common code
where aliasing ppgtt gets set up.

Note that with this we don't set the size of the aliasing ppgtt to the
size of the parent ggtt address space. Which isn't required at all
since except for the ppgtt setup/cleanup code no one ever looks at
this.

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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