[PATCH 2/3] drm/i915/hdcp: Pin the hdcp gsc message high in ggtt

Ville Syrjala ville.syrjala at linux.intel.com
Fri Dec 15 11:09:32 UTC 2023


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

AFAICS there is no hardware restriction on where in ggtt
the hdcp gsc message object needs to be bound. And as it's
a regular shmem object we don't need it be in the mappabe
range either. So pin it high to make avoid needlessly
wasting the precious mappable range for it.

Cc: Suraj Kandpal <suraj.kandpal at intel.com>
Cc: Alan Previn <alan.previn.teres.alexis at intel.com>
Cc: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
index 18117b789b16..302bff75b06c 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
@@ -65,7 +65,7 @@ static int intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915,
 		goto out_unmap;
 	}
 
-	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
+	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (err)
 		goto out_unmap;
 
-- 
2.41.0



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