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intel-microcode 3.20170511.1がリリースされました

2017年7月10日に、以前紹介したハイパースレッディングに絡む不具合に対応した「intel-microcode 3.20170511.1」が「Ubuntu 17.04」向けにリリースされました。


「intel-microcode  3.20170511.1~ubuntu17.04.0」パッケージの変更点は、以下のようになっています。

intel-microcode (3.20170511.1~ubuntu17.04.0) zesty; urgency=medium

  * Backport of new upstream microde release to address Hyper Threading
    bug. LP: #1700373.

intel-microcode (3.20170511.1) unstable; urgency=medium

  * New upstream microcode datafile 20170511
    + Updated Microcodes:
      sig 0x000306c3, pf_mask 0x32, 2017-01-27, rev 0x0022, size 22528
      sig 0x000306d4, pf_mask 0xc0, 2017-01-27, rev 0x0025, size 17408
      sig 0x000306f2, pf_mask 0x6f, 2017-01-30, rev 0x003a, size 32768
      sig 0x000306f4, pf_mask 0x80, 2017-01-30, rev 0x000f, size 16384
      sig 0x00040651, pf_mask 0x72, 2017-01-27, rev 0x0020, size 20480
      sig 0x00040661, pf_mask 0x32, 2017-01-27, rev 0x0017, size 24576
      sig 0x00040671, pf_mask 0x22, 2017-01-27, rev 0x0017, size 11264
      sig 0x000406e3, pf_mask 0xc0, 2017-04-09, rev 0x00ba, size 98304
      sig 0x000406f1, pf_mask 0xef, 2017-03-01, rev 0xb000021, size 26624
      sig 0x000506e3, pf_mask 0x36, 2017-04-09, rev 0x00ba, size 98304
    + This release fixes undisclosed errata on the desktop, mobile and
      server processor models from the Haswell, Broadwell, and Skylake
      families, including even the high-end multi-socket server Xeons
    + Likely fix the TSC-Deadline LAPIC errata (BDF89, SKL142 and
      similar) on several processor families
    + Fix erratum BDF90 on Xeon E7v4, E5v4(?) (closes: #862606)
    + Likely fix serious or critical Skylake errata: SKL138/144,
      SKL137/145, SLK149
    * Likely fix nightmare-level Skylake erratum SKL150.  Fortunately,
      either this erratum is very-low-hitting, or gcc/clang/icc/msvc
      won't usually issue the affected opcode pattern and it ends up
      being rare.
      SKL150 - Short loops using both the AH/BH/CH/DH registers and
      the corresponding wide register *may* result in unpredictable
      system behavior.  Requires both logical processors of the same
      core (i.e. sibling hyperthreads) to be active to trigger, as
      well as a "complex set of micro-architectural conditions"
  * source: remove unneeded intel-ucode/ directory
    Since release 20170511, upstream ships the microcodes both in .dat
    format, and as Linux-style split /lib/firmware/intel-ucode files.
    It is simpler to just use the .dat format file for now, so remove
    the intel-ucode/ directory. Note: before removal, it was verified
    that there were no discrepancies between the two microcode sets
    (.dat and intel-ucode/)
  * source: remove superseded upstream data file: 20161104

Ubuntu 17.10では

ちなみに現在「Ubuntu 17.10」では、「intel-microcode 3.20170707.1」がリリースされています。

intel-microcode (3.20170707.1) unstable; urgency=high

  * New upstream microcode datafile 20170707
    + New Microcodes:
      sig 0x00050654, pf_mask 0x97, 2017-06-01, rev 0x2000022, size 25600
      sig 0x000806e9, pf_mask 0xc0, 2017-04-27, rev 0x0062, size 97280
      sig 0x000806ea, pf_mask 0xc0, 2017-05-23, rev 0x0066, size 95232
      sig 0x000906e9, pf_mask 0x2a, 2017-04-06, rev 0x005e, size 97280
    + This release fixes the nightmare-level errata SKZ7/SKW144/SKL150/
      SKX150 (Skylake) KBL095/KBW095 (Kaby Lake) for all affected Kaby
      Lake and Skylake processors: Skylake D0/R0 were fixed since the
      previous upstream release (20170511).  This new release adds the
      fixes for Kaby Lake Y0/B0/H0 and Skylake H0 (Skylake-E/X).
    + Fix undisclosed errata in Skylake H0 (0x50654), Kaby Lake Y0
      (0x806ea), Kaby Lake H0 (0x806e9), Kaby Lake B0 (0x906e9)
  * source: remove unneeded intel-ucode/ directory
  * source: remove superseded upstream data file: 20170511