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On 23.02.2012 18:32, Jerome Glisse wrote:
<blockquote
cite="mid:CAH3drwaayhHk0cyK67mTdJNTC3Ox1GTPsELjGK9fqRtO9ODG2A@mail.gmail.com"
type="cite">
<div class="gmail_quote">2012/2/23 Mathias Fröhlich <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:Mathias.Froehlich@gmx.net">Mathias.Froehlich@gmx.net</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Christian,<br>
<div class="im"><br>
On Thursday, February 23, 2012 15:18:42 Christian König
wrote:<br>
> The function radeon_bo_list_validate can cause a<br>
> bo to move, resulting in a different sync_obj<br>
> and a dependency to wait for this move to finish.<br>
><br>
> Signed-off-by: Christian König <<a
moz-do-not-send="true"
href="mailto:deathsimple@vodafone.de">deathsimple@vodafone.de</a>><br>
> Reviewed-by: Alex Deucher <<a moz-do-not-send="true"
href="mailto:alexander.deucher@amd.com">alexander.deucher@amd.com</a>><br>
<br>
</div>
I am not sure, but to me this looks like this could fix these
kind of gpu<br>
lockups that I experience since some time every now and then.<br>
The usual symptom is that I get the<br>
<br>
radeon 0000:01:00.0: GPU lockup CP stall for more than
10000msec<br>
GPU lockup (waiting for 0x00682AC3 last fence id 0x00682AC2)<br>
[...]<br>
<br>
kernel message. Each time with the fence being off by one like
in the example<br>
above.<br>
<br>
If this change has the potential to fix this issue I think
this particular<br>
patch should be considered for the current upstream kernel
release.<br>
<span class="HOEnZb"><font color="#888888"><br>
Mathias</font></span><br>
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<br>
No this patch doesn't. This patch is all about getting proper sync
btw different rings.<br>
</blockquote>
That's unfortunately true, since we wasn't able to release any code
that makes direct use of the different rings (yet) it shouldn't
really matter in practice. I Just wanted to have that fix upstream
since it is an obvious bug.<br>
<br>
Christian.<br>
<blockquote
cite="mid:CAH3drwaayhHk0cyK67mTdJNTC3Ox1GTPsELjGK9fqRtO9ODG2A@mail.gmail.com"
type="cite"><br>
Sorry for the deception.<br>
<br>
Cheers,<br>
Jerome<br>
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