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<body><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> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BDW/BSW userptr] Rendercheck dcoords causes X crash"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79053">bug 79053</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BDW/BSW userptr] Rendercheck dcoords causes X crash"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79053#c76">Comment # 76</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BDW/BSW userptr] Rendercheck dcoords causes X crash"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79053">bug 79053</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>commit 3a22b6f6d55a5b1e0a1c0a3d597996268ed439ad
Author: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
Date: Wed Nov 19 15:10:05 2014 +0200
sna: gen8 BLT broken when address has bit 4 set
With bit 4 set in address, the gen8 blitter fails and blits errorneously
into the cacheline preceeding the destination and similarly when reading
fro
the source, corrupting memory.
v2: Update the destination base offset pattern as revealed
by igt/tests/gem_userptr_blits/destination-bo-align
v3: Check base address as well
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BDW/BSW userptr] Rendercheck dcoords causes X crash"
href="show_bug.cgi?id=79053">https://bugs.freedesktop.org/show_bug.cgi?id=79053</a>
Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Tested-by: <a href="mailto:xunx.fang@intel.com">xunx.fang@intel.com</a> [v2]
Signed-off-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
commit 8dee52997891108eec8e4df12dd02f3a060d9cb8
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Wed Nov 19 13:38:20 2014 +0000
sna: Add more checks and asserts for BLT capable bo
Before we use the BLT for core acceleration, double check that we can.
This should catch the case where we attempt to operate on SHM pixmaps
which do not meet the restrictions.
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
commit a90cc3b3889fafbd91c11c42d068a9d6474e218b
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Tue Nov 18 08:37:25 2014 +0000
sna: Tweak alignment constraints on gen8 to allow BLT
The previous commits prevent us from using the BLT if the destination
address is misaligned. Honour that restriction when creating buffers as
well, so that they are always usuable by the BLT.
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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