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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226#c33">Comment # 33</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226">bug 54226</a>
from <span class="vcard"><a class="email" href="mailto:mikhail.v.gavrilov@gmail.com" title="mikhail.v.gavrilov@gmail.com">mikhail.v.gavrilov@gmail.com</a>
</span></b>
<pre>Which patch I need applied for fix this issue?
I see that patches from <a href="show_bug.cgi?id=54226#c26">comment 26</a> and 32 have similar logic...
@@ -596,6 +606,16 @@ gen6_add_request(struct intel_ring_buffer *ring)
intel_ring_emit(ring, MI_USER_INTERRUPT);
intel_ring_advance(ring);
+ if (IS_GEN6(ring->dev)) {
+ ret = intel_ring_begin(ring, 6);
+ if (ret)
+ return ret;
+
+ read_mboxes(ring, mbox1_reg, 1024);
+ read_mboxes(ring, mbox2_reg, 1028);
+ intel_ring_advance(ring);
+ }
+
return 0;
}
@@ -598,6 +598,19 @@ gen6_add_request(struct intel_ring_buffer *ring)
intel_ring_emit(ring, MI_USER_INTERRUPT);
intel_ring_advance(ring);
+ if (IS_GEN6(ring->dev)) {
+ ret = intel_ring_begin(ring, 6);
+ if (ret)
+ return ret;
+
+ mbox1_reg = ring->signal_mbox[0];
+ mbox2_reg = ring->signal_mbox[1];
+
+ update_mboxes(ring, mbox1_reg);
+ update_mboxes(ring, mbox2_reg);
+ intel_ring_advance(ring);
+ }
+
return 0;
}</pre>
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