[PATCH 03/38] mb
Chris Wilson
chris at chris-wilson.co.uk
Wed Dec 5 10:29:05 UTC 2018
---
drivers/gpu/drm/i915/intel_lrc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 6bf9440be8f1..e9a96427e897 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1237,6 +1237,8 @@ static int emit_pdps(struct i915_request *rq)
* GPU hangs to forcewake errors and machine lockups!
*/
+ mb(); /* post all updates to the ppGTT */
+
err = engine->emit_flush(rq, EMIT_INVALIDATE);
if (err)
return err;
--
2.20.0.rc2
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