From: Anton Blanchard <anton@samba.org>
Date: Thu, 24 Nov 2011 19:39:36 +0000 (+0000)
Subject: powerpc/xics: Harden xics hypervisor backend
X-Git-Tag: v3.2.30~96
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d676c891354e871351e741eedf6a909ebffd265;p=pandora-kernel.git

powerpc/xics: Harden xics hypervisor backend

commit 3ce21cdfe93efffa4ffba9cf3ca2576d3d60d6dc upstream.

During kdump stress testing I sometimes see the kdump kernel panic
with:

  Interrupt 0x306 (real) is invalid, disabling it.
  Kernel panic - not syncing: bad return code EOI - rc = -4, value=ff000306

Instead of panicing print the error message, dump the stack the first
time it happens and continue on. Add some more information to the
debug messages as well.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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