Revert "drm/i915/bdw: Limit GTT to 2GB"

This reverts commit eb9d2c4792146ca6f404537e260514d0a5f3e546.

Now that the code is fixed to use smaller allocations, it should be safe
to let the full GGTT be used on BDW.

The testcase for this is anything which uses more than half of the GTT,
thus eclipsing the old limit.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 862ae371697a6ea1746c0c5abc2b1f13a8d1b90d..faa0319b8e46524688da8dcc62b0bb64fc8532bf 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1725,11 +1725,6 @@ static inline unsigned int gen8_get_total_gtt_size(u16 bdw_gmch_ctl)
        bdw_gmch_ctl &= BDW_GMCH_GGMS_MASK;
        if (bdw_gmch_ctl)
                bdw_gmch_ctl = 1 << bdw_gmch_ctl;
-       if (bdw_gmch_ctl > 4) {
-               WARN_ON(!i915.preliminary_hw_support);
-               return 4<<20;
-       }
-
        return bdw_gmch_ctl << 20;
 }