The spec says we just can't use it.

Signed-off-by: Paulo Zanoni <paulo.r.zan...@intel.com>
---
 drivers/gpu/drm/i915/i915_gem_stolen.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c 
b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 824334d..a292ea1 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -51,6 +51,9 @@ int i915_gem_stolen_insert_node_in_range(struct 
drm_i915_private *dev_priv,
        if (!drm_mm_initialized(&dev_priv->mm.stolen))
                return -ENODEV;
 
+       if (IS_BROADWELL(dev_priv) && start < 4096)
+               start = 4096;
+
        mutex_lock(&dev_priv->mm.stolen_lock);
        ret = drm_mm_insert_node_in_range(&dev_priv->mm.stolen, node, size,
                                          alignment, start, end,
-- 
2.4.6

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