From 8776f02b7c77f17dcf1dfab9954648874f264c89 Mon Sep 17 00:00:00 2001
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Tue, 30 Jun 2015 18:16:40 +0300
Subject: [PATCH] drm/i915/gtt: Per ppgtt scratch page

Previously we have pointed the page where the individual ppgtt
scratch structures refer to, to be the instance which GGTT setup have
allocated. So it has been shared.

To achieve full isolation between ppgtts also in this regard,
allocate per ppgtt scratch page.

Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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