linux-kernel - [PATCH 2/7] x86_64: Put allocated ELF notes in read-only data segment

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Message-Id: <20070711185902.A82A44D0555@magilla.localdomain>
Date:	Wed, 11 Jul 2007 11:59:02 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: [PATCH 2/7] x86_64: Put allocated ELF notes in read-only data segment


This changes the x86_64 linker script to use the asm-generic NOTES macro so
that ELF note sections with SHF_ALLOC set are linked into the kernel image
along with other read-only data.  The PT_NOTE also points to their location.

This paves the way for putting useful build-time information into ELF notes
that can be found easily later in a kernel memory dump.

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 arch/x86_64/kernel/vmlinux.lds.S |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S
index dbccfda..287e525 100644
--- a/arch/x86_64/kernel/vmlinux.lds.S
+++ b/arch/x86_64/kernel/vmlinux.lds.S
@@ -48,7 +48,9 @@ SECTIONS
   __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
   __stop___ex_table = .;
 
-  BUG_TABLE
+  NOTES :text :note
+
+  BUG_TABLE :text
 
   RODATA
 
-
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