On Wed, 2013-02-20 at 21:43 +0100, Phileas Fogg wrote:

I found the single commit which brakes kexec stuff for FreeBSD loader or other 
custom ELF kernels on the PS3 console.


 From 7230c5644188cd9e3fb380cc97dde00c464a3ba7 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 6 Mar 2012 18:27:59 +1100
Subject: [PATCH] powerpc: Rework lazy-interrupt handling

Odd... That rework had its own issues and so several patches went in
subsequently to address them. It's possible that the PS3 does more
horrid stuff we missed here but I don't quite see how to relate that to
your specific memory corruption problem...

Do you see any "pattern" to the corruption ? Does it looks like
something known ? IE., exception frame, ASCII data, MSR values, ...

Ben.