[Bug 1890612] Re: [Source NEW SRU FOCAL] ITP: Please support loading microcode early, whilst otherwise booting without initrd

[Łukasz Zemczak]

Hello Dimitri, or anyone else affected,

Accepted microcode-initrd into focal-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/microcode-
initrd/2~20.04.0 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: microcode-initrd (Ubuntu Focal)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-focal

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https://bugs.launchpad.net/bugs/1890612

Title:
  [Source NEW SRU FOCAL] ITP: Please support loading microcode early,
  whilst otherwise booting without initrd

Status in cloud-images:
  Fix Committed
Status in microcode-initrd package in Ubuntu:
  Fix Released
Status in microcode-initrd source package in Focal:
  Fix Committed

Bug description:
  [Impact]

   * New package to provide micorocode-only initrd for application of
  microcode on boot, when otherwise no initrd is in use.

  [Test Case]

   * install microcode-initrd in AWS cloud x86 metal instance
   * reboot, observe that microcode has been applied, and yet the boot was without initrd (observe journalctl -b -k to see that initrd was not used for boot)

  [Regression Potential]

   * This is a brand new package, that will be used by AWS images.
  Otherwise this package will not be automatically installed anywhere.
  Re spinning & promoting AWS images are tested and gated by the CPC
  team.

  [Other Info]
   
   * Original bug report for groovy:

  Normally Ubuntu boots using initrd that has three archives: early
  amd64 microcode, early intel microcode, and compressed main initrd.

  When booting without initrd, simply kernel is loaded without any
  initrd and thus without microcode.

  However, grub supports booting with multiple initrds and one can
  specify a standalone early initrd which contains microcode only, and
  separate main initrd.

  As an added bonus one can also specify just eary microcode initrd
  without a main one, to allow kernel to load microcode early, but
  otherwise boot without an initrd.

  To achieve that I need to introduce a microcode-initrd package will
  will only provide early initrd which only has microcode.

  The intention is to seed microcode-initrd to targets that boot on
  baremental without initrd.

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