From a294aa724a1e932fb6017383e08532bfcc914df0 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 23 Oct 2007 17:54:07 +1000 Subject: i915: require mfence before submitting batchbuffer --- shared-core/i915_dma.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'shared-core') diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c index d0d65f8c..f0fd6037 100644 --- a/shared-core/i915_dma.c +++ b/shared-core/i915_dma.c @@ -1044,6 +1044,9 @@ static int i915_execbuffer(struct drm_device *dev, void *data, if (ret) goto out_free; + /* make sure all previous memory operations have passed */ + asm volatile("mfence":::"memory"); + /* submit buffer */ batch->start = buffers[num_buffers-1]->offset; -- cgit v1.2.3