## arg 1:  the new package version
## arg 2:  the old package version
post_upgrade() {
  echo "Intel CPU ucode upgrades are no longer performed by the firmware loader."
  echo "If you want to update the Intel CPU ucode on boot, add the file"
  echo "Make sure you enable the 'microcode' hook in /etc/mkinitcpio.conf"
  echo "And regenerate kernel image with mkinitcpio"
  echo ""
  if [ "$(vercmp $2 20151106)" -lt 0 ]; then
    echo "If you're previously using grub, make sure you generate the new grub config file."
  fi
}