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

Dimitri John Ledkov 1890612 at bugs.launchpad.net
Thu Nov 19 12:05:44 UTC 2020


linux-meta-aws patch is submitted at https://lists.ubuntu.com/archives
/kernel-team/2020-November/114920.html

** Also affects: linux-meta-aws (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

+ Now that micorocode-initrd is in focal, linux-meta-aws should start
+ depending on it in focal too.
+ 
+ --
+ 
  [Impact]
  
-  * New package to provide micorocode-only initrd for application of
+  * 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)
+  * 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.
+  * 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:
+ 
+  * 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.

** Changed in: linux-meta-aws (Ubuntu)
       Status: New => Fix Released

** Changed in: linux-meta-aws (Ubuntu Focal)
       Status: New => Triaged

-- 
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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 linux-meta-aws package in Ubuntu:
  Fix Released
Status in microcode-initrd package in Ubuntu:
  Fix Released
Status in linux-meta-aws source package in Focal:
  Triaged
Status in microcode-initrd source package in Focal:
  Fix Released

Bug description:
  Now that micorocode-initrd is in focal, linux-meta-aws should start
  depending on it in focal too.

  --

  [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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