Patch "powerpc/boot: Fix zImage TOC alignment" has been added to the 4.9-stable tree

Patch "powerpc/boot: Fix zImage TOC alignment" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    powerpc/boot: Fix zImage TOC alignment

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     powerpc-boot-fix-zimage-toc-alignment.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 97ee351b50a49717543533cfb85b4bf9d88c9680 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <mpe@ellerman.id.au>
Date: Tue, 7 Mar 2017 16:14:49 +1100
Subject: powerpc/boot: Fix zImage TOC alignment

From: Michael Ellerman <mpe@ellerman.id.au>

commit 97ee351b50a49717543533cfb85b4bf9d88c9680 upstream.

Recent toolchains force the TOC to be 256 byte aligned. We need to
enforce this alignment in the zImage linker script, otherwise pointers
to our TOC variables (__toc_start) could be incorrect. If the actual
start of the TOC and __toc_start don't have the same value we crash
early in the zImage wrapper.

Suggested-by: Alan Modra <amodra@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/boot/zImage.lds.S |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/powerpc/boot/zImage.lds.S
+++ b/arch/powerpc/boot/zImage.lds.S
@@ -68,6 +68,7 @@ SECTIONS
   }
 
 #ifdef CONFIG_PPC64_BOOT_WRAPPER
+  . = ALIGN(256);
   .got :
   {
     __toc_start = .;


Patches currently in stable-queue which might be from mpe@ellerman.id.au are

queue-4.9/powerpc-boot-fix-zimage-toc-alignment.patch