From 1df06b75f0235c6c4f836e5c03fb499ba70a54bd Mon Sep 17 00:00:00 2001
From: Thomas Daniel <thomas.daniel@intel.com>
Date: Wed, 29 Oct 2014 09:52:51 +0000
Subject: [PATCH] drm/i915/bdw: Setup global hardware status page in execlists
 mode

Write HWS_PGA address even in execlists mode as the global hardware status
page is still required.  This address was previously uninitialized and
HWSP writes would clobber whatever buffer happened to reside at GGTT
address 0.

v2: Break out hardware status page setup into a separate function.

Issue: VIZ-2020
Signed-off-by: Thomas Daniel <thomas.daniel@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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