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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_NEW "
   title="NEW --- - [hsw hiz] Cycling between GL/X rendering causes a hard hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63914">bug 63914</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;">Assignee</td>
           <td>chris@chris-wilson.co.uk
           </td>
           <td>idr@freedesktop.org
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">QA Contact</td>
           <td>intel-gfx-bugs@lists.freedesktop.org
           </td>
           <td>
                
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Summary</td>
           <td>[hsw] Cycling between GL/X rendering causes a hard hang
           </td>
           <td>[hsw hiz] Cycling between GL/X rendering causes a hard hang
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Product</td>
           <td>xorg
           </td>
           <td>Mesa
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Component</td>
           <td>Driver/intel
           </td>
           <td>Drivers/DRI/i965
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [hsw hiz] Cycling between GL/X rendering causes a hard hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63914#c21">Comment # 21</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [hsw hiz] Cycling between GL/X rendering causes a hard hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63914">bug 63914</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>Drumroll please...

=0 haswell:/opt/xorg/src/mesa/mesa (master)$ git diff
diff --git a/src/mesa/drivers/dri/intel/intel_context.c
b/src/mesa/drivers/dri/i
index 0a1dd75..65f8738 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -704,7 +704,7 @@ intelInitContext(struct intel_context *intel,

    intel->has_separate_stencil = intel->intelScreen->hw_has_separate_stencil;
    intel->must_use_separate_stencil =
intel->intelScreen->hw_must_use_separate_
-   intel->has_hiz = intel->gen >= 6;
+   intel->has_hiz = intel->gen >= 6 && 0;
    intel->has_llc = intel->intelScreen->hw_has_llc;
    intel->has_swizzling = intel->intelScreen->hw_has_swizzling;</pre>
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