[TESTING ON ARM64 HARDWARE]

$ cat /etc/issue
Ubuntu 16.04.1 LTS \n \l

$ sudo apt-add-repository ppa:manjo/kexec-tools
$ sudo apt update 
$ sudo apt install kexec-tools
$ kexec --version
kexec-tools 2.0.10 released 26 January 2017

$ ls /boot          
abi-4.7.0-2-generic     grub                        System.map-4.7.0-2-generic
config-4.7.0-2-generic  initrd.img                  vmlinuz
efi                     initrd.img-4.7.0-2-generic  vmlinuz-4.7.0-2-generic

$ cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-4.7.0-2-generic 
root=UUID=4f520e6e-6b21-460e-9c2b-332b188e393b ro splash quiet vt.handoff=7

$ sudo kexec -l /boot/vmlinuz-4.7.0-2-generic
--initrd=/boot/initrd.img-4.7.0-2-generic --command-line="root=UUID
=4f520e6e-6b21-460e-9c2b-332b188e393b ro vt.handoff=7"

$ sudo kexec -e 
[  76.658975] kexec_core: Starting new kernel
[    0.000000] Booting Linux on physical CPU 0x200
[    0.000000] Linux version 4.7.0-2-generic (buildd@bos01-arm64-008) (gcc 
version 5.4.0 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) ) 
#5~pdaw1.1+<redacted>.2-Ubuntu SMP Fri Jan 13 18:38:31 UTC 2017 (Ubuntu 
4.7.0-2.5~pdaw1.1+<redacted>.2-generic 4.7.0)
[    0.000000] Boot CPU: AArch64 Processor [510f8000]

$ uname -a 
Linux pdaw1 4.7.0-2-generic #5~pdaw1.1+<redacted>.2-Ubuntu SMP Fri Jan 13 
18:38:31 UTC 2017 aarch64 aarch64 aarch64 GNU/Linux

$ cat /proc/cmdline 
root=UUID=4f520e6e-6b21-460e-9c2b-332b188e393b ro vt.handoff=7

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

Title:
  Enable ARM64 support in kexec-tools

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