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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW xf86-video-intel] 2D acceleration slows to a crawl from 4.4.6 -> 4.5"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94980#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW xf86-video-intel] 2D acceleration slows to a crawl from 4.4.6 -> 4.5"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94980">bug 94980</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>Suggestion by Maarten:

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 36e7e29ea266..385095f725a8 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13160,6 +13160,9 @@ static int intel_atomic_prepare_commit(struct
drm_device *dev,
        }

        for_each_crtc_in_state(state, crtc, crtc_state, i) {
+               if (state->legacy_cursor_update)
+                       continue;
+
                ret = intel_crtc_wait_for_pending_flips(crtc);
                if (ret)
                        return ret;</pre>
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