This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1675046

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1675046

Title:
  [ARM64] Support systems where the physical memory footprint exceeds
  the size of the linear mapping.

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [Impact]
  Kernel might fail booting on systems where the physical memory footprint 
exceeds the size of the linear mapping. The following patches addresses this 
issue:

  [v2,1/2] efi: arm-stub: Correct FDT and initrd allocation rules for arm64
  https://patchwork.kernel.org/patch/9565537/

  [v2,2/2] efi: arm-stub: Round up FDT allocation to mapping size
  https://patchwork.kernel.org/patch/9565539

  [Testing]
  These patches were regression tested. Patches were applied to Zesty latest 
and boots on a KVM instance and on QDF2400 ARM64 Qualcomm server. At this time 
do not have systems with high memory to test with.

  [Regression Potential]
  Changes are confined to ARM architecture, patches apply cleanly to 
Ubuntu-4.10.0-13.15. Potential for any regression is low.

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