Does any know much about kexec-tools, is it enabled in the kernel?  Has anyone tried it out?

Name   : kexec-tools
Arch   : i386
Version: 1.101
Release: 5.1
Size   : 154 k
Repo   : installed
Summary: The kexec/kdump userspace component.

Description:
 kexec-tools provides /sbin/kexec binary that facilitates a new
kernel to boot using the kernel's kexec feature either on a
normal or a panic reboot. This package contains the /sbin/kexec
binary and ancillary utilities that together form the userspace
component of the kernel's kexec feature.