Commit 1591192d authored by Chris Wilson's avatar Chris Wilson

drm/i915: Disable GPU semaphores on SandyBridge mobile

Hopefully, this is a temporary measure whilst the root cause is
understood. At the moment, we experience a hard hang whilst looping
urbanterror that has been identified as a result of the use of
semaphores, but so far only on SNB mobile.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32752
Tested-by: mengmeng.meng@intel.com
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 595dad76
......@@ -772,7 +772,8 @@ i915_gem_execbuffer_sync_rings(struct drm_i915_gem_object *obj,
if (from == NULL || to == from)
return 0;
if (INTEL_INFO(obj->base.dev)->gen < 6)
/* XXX gpu semaphores are currently causing hard hangs on SNB mobile */
if (INTEL_INFO(obj->base.dev)->gen < 6 || IS_MOBILE(obj->base.dev))
return i915_gem_object_wait_rendering(obj, true);
idx = intel_ring_sync_index(from, to);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment