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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT BSW] gem_ctx_param_basic/non-root-set-no-zeromap causes *ERROR* gpu hanging too fast"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94869">94869</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BAT BSW] gem_ctx_param_basic/non-root-set-no-zeromap causes *ERROR* gpu hanging too fast
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>tim.gore@intel.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>During BAT testing of a patch targeting gen9 only, several tests, of which
gem_ctx_param_basic/non-root-set-no-zeromap is one, cause "*ERROR* gpu hanging
too fast" in dmesg log on the bsw-nuc2 target, although the test reports
success.
This has also been seen in CI_DRM_1199 and CI_DRM_1175. Maybe related to <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BSW]igt/gem_exec_nop/render causes [drm:i915_context_is_banned [i915]] *ERROR* gpu hanging too fast, banning!"
   href="show_bug.cgi?id=89633">bug
89633</a>.

Patch being tested is <a href="https://patchwork.freedesktop.org/series/5367/">https://patchwork.freedesktop.org/series/5367/</a>
This introduces a workaround in gen9_init_workarounds, which is also
conditional on
 (IS_SKL_REVID(dev, SKL_REVID_C0, REVID_FOREVER) || IS_BROXTON(dev))
So this patch should not be able to affect a BSW target.

Regression build. CI_DRM_1200

================================================================
Stdout    
IGT-Version: 1.14-gfd7fef6 (x86_64) (Linux: 4.6.0-rc2-gfxbench+ x86_64)
Subtest non-root-set-no-zeromap: SUCCESS (0.012s)
Stderr    
Environment    
PIGLIT_SOURCE_DIR="/opt/igt/piglit" PIGLIT_PLATFORM="mixed_glx_egl"
Command    /opt/igt/tests/gem_ctx_param_basic --run-subtest
non-root-set-no-zeromap
dmesg    
[  577.819668] [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast,
banning!
[  577.824606] drm/i915: Resetting chip after gpu hang
[  583.813212] [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast,
banning!
[  583.817731] drm/i915: Resetting chip after gpu hang</pre>
        </div>
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