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<body><span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW] GPU HANG: ecode 7:0:0x85dffffc, in glxspheres64 [4492], reason: Hang on render ring, action: reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99001">bug 99001</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Assignee</td>
<td>yann.argotti@intel.com
</td>
<td>chris@chris-wilson.co.uk
</td>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW] GPU HANG: ecode 7:0:0x85dffffc, in glxspheres64 [4492], reason: Hang on render ring, action: reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99001#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW] GPU HANG: ecode 7:0:0x85dffffc, in glxspheres64 [4492], reason: Hang on render ring, action: reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99001">bug 99001</a>
from <span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span></b>
<pre>(In reply to Jari Tahvanainen from <a href="show_bug.cgi?id=99001#c14">comment #14</a>)
<span class="quote">> Yann, use five minutes and check out if new crash log give any new
> indication about the reason for hang.
> I also removed bisected keyword since assumable that is not the case.</span >
According to mesa engineers, mesa only emits 3DSTATE_VERTEX_ELEMENTS on-demand
right before 3DPRIMITIVE.
Chris has changed SNA to emit a dummy primitive between VertexElements in
4acd4a7d3d2f41227022fa7581cfb85a0b124eae in xf86-video-intel (thanks to
<a href="https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=4acd4a7d3d2f41227022fa7581cfb85a0b124eae">https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=4acd4a7d3d2f41227022fa7581cfb85a0b124eae</a>)
but this is for gen9. Here we are dealing with gen7, do we need such mechanism
as well in gen7_emit_vertex_elements?
An alternate solution is to use Glamor/modesetting.
*Details:
- Kernel: 4.9.0-rc8inteldri+
- Platform: Haswell (PCI ID: 0x0416, PCI Revision: 0x06, PCI Subsystem:
1462:10e0)
- Mesa: 13.0.2-2
- xf86-video-intel: 2.99.917.740.g9ac7a33-1
0x008a0540: 0x78090001: 3DSTATE_VERTEX_ELEMENTS
0x008a0544: 0x02850000: buffer 0: valid, type 0x0085, src offset 0x0000
bytes
0x008a0548: 0x11230000: (X, Y, 0.0, 1.0), dst offset 0x00 bytes
0x008a054c: 0x7b000005: 3DPRIMITIVE:
0x008a0550: 0x00000006: tri fan sequential
0x008a0554: 0x00000004: vertex count
0x008a0558: 0x00000000: start vertex
0x008a055c: 0x00000001: instance count
0x008a0560: 0x00000000: start instance
0x008a0564: 0x00000000: index bias
0x008a0568: 0x7a000003: PIPE_CONTROL
0x008a056c: 0x00101001: no write, cs stall, render target cache flush,
depth cache flush,
0x008a0570: 0x00000000: destination address
0x008a0574: 0x00000000: immediate dword low
0x008a0578: 0x00000000: immediate dword high
0x008a057c: 0x7a000003: PIPE_CONTROL
0x008a0580: 0x00000c10: no write, instruction cache invalidate, texture
cache invalidate, vf fetch invalidate,
0x008a0584: 0x00000000: destination address
0x008a0588: 0x00000000: immediate dword low
0x008a058c: 0x00000000: immediate dword high</pre>
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