** Changed in: linux-hwe-edge (Ubuntu Xenial)
       Status: New => Fix Released

** Changed in: linux-hwe-edge (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1384955

Title:
  support compressed kernels on arm64

Status in debian-installer package in Ubuntu:
  Fix Released
Status in flash-kernel package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux-hwe-edge package in Ubuntu:
  Fix Released
Status in debian-installer source package in Xenial:
  Fix Released
Status in flash-kernel source package in Xenial:
  Fix Released
Status in linux-hwe-edge source package in Xenial:
  Fix Released
Status in flash-kernel package in Debian:
  New

Bug description:
  [Impact]
  Ubuntu kernels >= hwe-y (4.8) will no longer boot on xgene/uboot systems. The 
image size appears to have outgrown the defined firmware region, and u-boot 
will error out with a checksum mismatch error. A solution for this is to start 
shipping a compressed kernel (Image.gz target). flash-kernel needs updating to 
detect a compressed kernel and set the appropriate uImage compression flag. 
Similarly, d-i needs updating because it does it's own uImage generation.

  [Test Case]
  Boot an hwe-y kernel on an xgene/uboot system (APM Mustang, HP ProLiant m400).

  [Regression Risk]
  The necessary code is in place and in-use for yakkety, and no issues have 
been discovered there. The SRU involves clean cherry-picks of that code for d-i 
& f-k. The kernel side needs to be modified to pull in the correct version of 
flash-kernel for xenial.

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