linux-kernel - [PATCH 3/7] alpha: Put allocated ELF notes in read-only data segment

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Message-Id: <20070711190026.699744D0555@magilla.localdomain>
Date:	Wed, 11 Jul 2007 12:00:26 -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, Richard Henderson <rth@...ddle.net>
Subject: [PATCH 3/7] alpha: Put allocated ELF notes in read-only data segment


This changes the alpha 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/alpha/kernel/vmlinux.lds.S |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S
index 449e76f..34a5ac9 100644
--- a/arch/alpha/kernel/vmlinux.lds.S
+++ b/arch/alpha/kernel/vmlinux.lds.S
@@ -3,7 +3,7 @@
 OUTPUT_FORMAT("elf64-alpha")
 OUTPUT_ARCH(alpha)
 ENTRY(__start)
-PHDRS { kernel PT_LOAD ; }
+PHDRS { kernel PT_LOAD; note PT_NOTE; }
 jiffies = jiffies_64;
 SECTIONS
 {
@@ -28,6 +28,9 @@ SECTIONS
   __ex_table : { *(__ex_table) }
   __stop___ex_table = .;
 
+  NOTES :kernel :note
+  .dummy : { *(.dummy) } :kernel
+
   RODATA
 
   /* Will be freed after init */
-
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