[PATCH 009/131] drm/i915: Mark unmappable GGTT entries as PIN_HIGH

Chris Wilson chris at chris-wilson.co.uk
Sat Aug 6 07:35:36 UTC 2016


We allocate a few objects into the GGTT that we never need to access via
the mappable aperture (such as contexts, status pages). We can request
that these are bound high in the VM to increase the amount of mappable
aperture available. However, anything that may be frequently pinned
(such as logical contexts) we want to use the fast search & insert.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 16b726fe33eb..09f01c641c14 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2093,7 +2093,7 @@ static int intel_ring_context_pin(struct i915_gem_context *ctx,
 
 	if (ce->state) {
 		ret = i915_gem_object_ggtt_pin(ce->state, NULL, 0,
-					       ctx->ggtt_alignment, 0);
+					       ctx->ggtt_alignment, PIN_HIGH);
 		if (ret)
 			goto error;
 	}
@@ -2629,7 +2629,8 @@ static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv,
 			i915.semaphores = 0;
 		} else {
 			i915_gem_object_set_cache_level(obj, I915_CACHE_LLC);
-			ret = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+			ret = i915_gem_object_ggtt_pin(obj, NULL,
+						       0, 0, PIN_HIGH);
 			if (ret != 0) {
 				i915_gem_object_put(obj);
 				DRM_ERROR("Failed to pin semaphore bo. Disabling semaphores\n");
-- 
2.8.1



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