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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [anv] vkCmdCopyBuffer() and vkCmdCopyQueryPoolResults() write-after-write hazard"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=108894#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [anv] vkCmdCopyBuffer() and vkCmdCopyQueryPoolResults() write-after-write hazard"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=108894">bug 108894</a>
              from <span class="vcard"><a class="email" href="mailto:lionel.g.landwerlin@linux.intel.com" title="Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>"> <span class="fn">Lionel Landwerlin</span></a>
</span></b>
        <pre>Got it.

Yes, I think you need to put barriers because in Anv we're using the 3d
pipeline to copy buffers, whereas timestamps are copied using the command
streamer.
Those being 2 different pieces of hardware, there is no guarantee about which
one is going to write to memory first/last.</pre>
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