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version 1.21, 2021/04/11 20:06:47 version 1.22, 2021/04/11 20:11:09
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         <li>Excluded the first page and added a guard page between I/O          <li>Excluded the first page and added a guard page between I/O
                 virtual address space allocations on arm64.                  virtual address space allocations on arm64.
   </ul>    </ul>
   
 <li>SMP Improvements  <li>SMP Improvements
   <ul>    <ul>
         <li>Introduced "if_cloners_lock" rwlock and used it to serialize if_clone_{create,destroy}(), avoiding multiple race conditions.          <li>Introduced "if_cloners_lock" rwlock and used it to serialize if_clone_{create,destroy}(), avoiding multiple race conditions.
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         <li>Unlocked <a href="https://man.openbsd.org/sendsyslog.2">sendsyslog(2)</a>.          <li>Unlocked <a href="https://man.openbsd.org/sendsyslog.2">sendsyslog(2)</a>.
         <li>Used per-CPU counter for fault and stats counters reached in uvm_fault().          <li>Used per-CPU counter for fault and stats counters reached in uvm_fault().
   </ul>    </ul>
   
 <li>Direct Rendering Manager  <li>Direct Rendering Manager
   <ul>    <ul>
         <li>Implemented linux interval tree functions for <a href="https://man.openbsd.org/drm.4">drm(4)</a>.          <li>Implemented linux interval tree functions for <a href="https://man.openbsd.org/drm.4">drm(4)</a>.
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         <li>Fixed DRI3 support on <a href="https://man.openbsd.org/amdgpu.4">amdgpu(4)</a> and <a href="https://man.openbsd.org/ati.4">ati(4)</a>.          <li>Fixed DRI3 support on <a href="https://man.openbsd.org/amdgpu.4">amdgpu(4)</a> and <a href="https://man.openbsd.org/ati.4">ati(4)</a>.
         <li>Created /dev/ drm nodes with the same names as linux to simplify libdrm and negate the need for certain ports patches.          <li>Created /dev/ drm nodes with the same names as linux to simplify libdrm and negate the need for certain ports patches.
   </ul>    </ul>
   
 <li>VMM/VMD improvements  <li>VMM/VMD improvements
   <ul>    <ul>
         <li>Prevented memory corruption or improper page access in <a          <li>Prevented memory corruption or improper page access in <a
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         <li>Enable <a          <li>Enable <a
                 href="https://man.openbsd.org/man4/arm64/apm.4">apm(4)</a> on arm64 to                  href="https://man.openbsd.org/man4/arm64/apm.4">apm(4)</a> on arm64 to
                 display meaningful information about battery use and capacity.                  display meaningful information about battery use and capacity.
   
   
   
   </ul>    </ul>
   
 <li>Various bugfixes and tweaks in userland:  <li>Various bugfixes and tweaks in userland:
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                 is read-only. Made the active buffer indicator more visible by                  is read-only. Made the active buffer indicator more visible by
                 changing it to ">".                  changing it to ">".
   
   
   
         <li>Fixed <a href="https://man.openbsd.org/ksh.1">ksh(1)</a>          <li>Fixed <a href="https://man.openbsd.org/ksh.1">ksh(1)</a>
                 redrawing of a multiline PS1 prompt in vi mode and added support for                  redrawing of a multiline PS1 prompt in vi mode and added support for
                 ^R (redraw) in insert mode.                  ^R (redraw) in insert mode.
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                 the socket in process after calling <a                  the socket in process after calling <a
                 href="https://man.openbsd.org/unveil.2">unveil(2)</a> would cause a                  href="https://man.openbsd.org/unveil.2">unveil(2)</a> would cause a
                 unveil restriction violation,                  unveil restriction violation,
   
   
   
   </ul>    </ul>
   
 <li>Improved hardware support and driver bugfixes, including:  <li>Improved hardware support and driver bugfixes, including:
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 <section id=upgrade>  <section id=upgrade>
 <h3>How to upgrade</h3>  <h3>How to upgrade</h3>
 <p>  <p>
 If you already have an OpenBSD 6.7 system, and do not want to reinstall,  If you already have an OpenBSD 6.8 system, and do not want to reinstall,
 upgrade instructions and advice can be found in the  upgrade instructions and advice can be found in the
 <a href="faq/upgrade69.html">Upgrade Guide</a>.  <a href="faq/upgrade69.html">Upgrade Guide</a>.
 </section>  </section>
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