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[Launchpad Bug Tracker <1659618@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package kexec-tools -
1:2.0.16-1ubuntu1~16.04.1

---------------
kexec-tools (1:2.0.16-1ubuntu1~16.04.1) xenial; urgency=low

  * Backport latest kexec-tools from bionic to xenial (LP: #1743529).

 -- Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>  Fri, 23 Feb
2018 12:11:36 -0300

** Changed in: kexec-tools (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1659618

Title:
  Enable ARM64 support in kexec-tools

Status in kexec-tools package in Ubuntu:
  Fix Released
Status in kexec-tools source package in Xenial:
  Fix Released
Status in kexec-tools source package in Yakkety:
  Fix Committed
Status in kexec-tools package in Debian:
  Fix Released

Bug description:
  [IMPACT]
   * kexec-tools in Xenial (16.04) currently does not support ARM64
     architecture.
   * Backport support for ARM64 arch from upstream
     https://github.com/horms/kexec-tools
   * Majority of the patches are contained in kexec/arch/arm64/ except for
     one patch that impacts purgatory and common device tree routines.

  [TEST CASE]
   * I built kexec-tools for ARM64 and tested it on HW using the following
     testcase:
     $ sudo kexec -l /boot/vmlinuz-<version>-generic
       --initrd=/boot/initrd.img-<version>-generic
       --command-line="root=UUID=<uuid> ro vt.handoff=7"
     $ sudo kexec -e
   * I was able to kexec the new kernel successfully.
   * [ 6702.357899] kexec_core: Starting new kernel
     [    0.000000] Booting Linux on physical CPU 0x200
     [    0.000000] Linux version <version>-generic (buildd@bos01-arm64-008)
     (gcc version 5.4.0 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) )
     [    0.000000] Boot CPU: AArch64 Processor [510f8000]

  [REGRESSION POTENTIAL]
   * Since patches are confined to arm[64] there is a low overall risk of
     regression.

  [OTHER INFO]
   * You can find a Xenial kexec-tools package built for AMD64, i386 and
     ARM64 in my PPA
     https://launchpad.net/~manjo/+archive/ubuntu/kexec-tools
   * This package is built using the Xenial source package for kexec-tools
     with ARM64 enablement patches applied.
   * Please pull the changes from my PPA package and integrate into Ubuntu
     Xenial kexec-tools after review.

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