Need help to understand why kdump is for 64 bit PPC only

[Josh Boyer]

On Tue, 16 Dec 2008 07:33:04 +1100
Michael Ellerman <michael at ellerman.id.au> wrote:

> On Mon, 2008-12-15 at 13:35 -0600, Kumar Gala wrote:
> > On Dec 15, 2008, at 12:58 PM, Frank Fan wrote:
> > 
> > > Hello,
> > >
> > > I am working on a freescale MPC8572 CPU board and use 32 bit  
> > > Linux2.6.28.  When I enable 64 bit, it shows "kdump" in "kernel  
> > > options". Otherwise, "kdump" is disabled.
> > > Can someone give me some hint why kdump is for 64 bit PPC only?
> > 
> > Probably because no one has implemented or tested it on ppc32/8572.
> 
> Pretty much, the 32-bit version of default_machine_kexec() is pretty
> naïve, but you never know it might work.

You forgot the obligatory: "Or it could crash and cause your board to
catch on fire."

josh