Comment 15 for bug 1659618

The attached patch has the complete set of patches needed for kexec support on ARM64.
* Enable ARM64 support in kexec-tools (LP: #1659618)
* Enable support for compressed kernels on ARM64 (LP: #1661363)
* kexec: Increase the upper limit for RAM segments (LP: #1663400)

This patch applies cleanly on Yakkety kexec-tools: https://pastebin.ubuntu.com/23968404/

Testing for lp 1663400 is posted to the SRU request description. Testing results for arm64 support yielded the same results as previously.

ubuntu@yk:/tmp$ dpkg -l | grep kexec-tools
ii kexec-tools 1:2.0.10-2ubuntu1.1 arm64 tools to support fast kexec reboots
ubuntu@yk:/tmp$

ubuntu@yk:/tmp$ sudo kexec -l /boot/vmlinuz-4.8.0-38-generic --initrd=/boot/initrd.img-4.8.0-38-generic --append="root=UUID=d80e6bcf-a747-43fd-97fe-e47574637b2b ro vt.handoff=7"
ubuntu@yk:/tmp$

ubuntu@yk:/tmp$ sudo kexec -e
Ubuntu 16.10 yk ttyAMA0

yk login: [ 1902.177836] kexec_core: Starting new kernel
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.8.0-38-generic (manjo@tangerine) (gcc version 6.2.0 20161005 (Ubuntu 6.2.0-5ubuntu12) ) #40ubuntu1 SMP Mon Feb 6 21:55:35 UTC 2017 (Ubuntu 4.8.0-38.40ubuntu1-generic 4.8.17)
[ 0.000000] Boot CPU: AArch64 Processor [510f8000]
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: EFI v2.50 by EDK II
[ 0.000000] efi: SMBIOS=0x5bdb0000 SMBIOS 3.0=0x58660000 PROP=0x5f714518 ACPI=0x58690000 ACPI 2.0=0x58690014
[ 0.000000] No NUMA configuration found