Comment 59 for bug 1700373

The changelog entry is there to match the artful changelog entry *(it applies completely correctly for zesty).

As for the dat files. I guess my changelog entry would have been more explicit had I said sync instead of backport.

" * Backport of new upstream microcode release to address Hyper Threading
    bug. This is mostly a sync of the dat files from debian version
    3.20170707.1 (LP: #1700373) "

It should be noted that these dat files are never exposed via the bin package to the user.

As for the rest of the changelog entry, I thought about not including the debian changelog entry in the x upload, but I like to error on the side of more information, and this vvvvvv part of the changelog entry matches identically to zesty and artful.
" * 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  * source: remove superseded upstream data file: 20170511
"

If you deem it crucially important, we could change that last line to
" * source: synced data files with debian version 20170707.1
"