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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW] GPU hang on ctx load"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83677#c47">Comment # 47</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW] GPU hang on ctx load"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83677">bug 83677</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Small, but it forces the invalidate after the ctx load:
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 1a0611bb576b..9676bc729f13 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1082,11 +1082,11 @@ i915_gem_ringbuffer_submission(struct drm_device *dev,
struct drm_file *file,
}
}
- ret = i915_gem_execbuffer_move_to_gpu(ring, vmas);
+ ret = i915_switch_context(ring, ctx);
if (ret)
goto error;
- ret = i915_switch_context(ring, ctx);
+ ret = i915_gem_execbuffer_move_to_gpu(ring, vmas);
if (ret)
goto error;</pre>
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