On Mon, Jan 04, 2010 at 09:20:23PM -0800, Eric W. Biederman wrote: > Venkappa Mala <Venkappa.Mala at lntinfotech.com> writes: > > > > 2) As per kexec supports, kexec-tool is required and this allows you to load directly > > to a new kernel from the currently running one > > > > As from my side, i am not able to find arm implementation support in kexec-tools/crash sources. > > > > - is kexce-tool supported for ARM or not? > > It would be rather counterintuitive for the kernel to support kexec and the necessary userspace components not to. The MAINTAINERS file says: KEXEC M: Eric Biederman <ebiederm at xmission.com> W: http://ftp.kernel.org/pub/linux/kernel/people/horms/kexec-tools/ L: kexec at lists.infradead.org S: Maintained F: include/linux/kexec.h F: kernel/kexec.c While the above URL redirects to gitweb, resulting in: http://git.kernel.org/?p=linux/kernel/git/horms/kexec-tools.git;a=summary A peripheral grep of the kexec-tools source results in: $ git grep kdump | grep arm kexec/arch/arm/kexec-arm.c: return 0; /* kdump is not supported on this platform (yet) */ So one could infer that kexec is supported on ARM whilst kdump is not. Adding crashdump support requires both some kernel and kexec-tools glue, but is fairly straightforward, just look at the other ports.
