[PATCH -mm 1/2] kexec jump -v12: kexec jump

[Andrew Morton]

On Tue, 8 Jul 2008 10:50:51 -0400 Vivek Goyal <vgoyal at redhat.com> wrote:

> On Mon, Jul 07, 2008 at 11:25:22AM +0800, Huang Ying wrote:
> > This patch provides an enhancement to kexec/kdump. It implements
> > the following features:
> > 
> > - Backup/restore memory used by the original kernel before/after
> >   kexec.
> > 
> > - Save/restore CPU state before/after kexec.
> > 
> 
> Hi Huang,
> 
> In general this patch set looks good enough to live in -mm and
> get some testing going.
> 
> To me, adding capability to return back to original kernel looks
> like a logical extension to kexec functionality.

Exciting ;)  It's much less code than I expected.

I don't think I understand the feature any more.  Once upon a time we
thought that this might become a new and better (or at least
better-code-sharing) way of doing suspend-to-disk.  How far are we from
that?

What are the prospects of supporting other architectures?

Who maintains kexec-tools, and are they OK with merging up the
corresponding changes?

Thanks.