Commit cbe87121 authored Jul 19, 2007 by Roland McGrath Committed by Linus Torvalds Jul 19, 2007

i386: Put allocated ELF notes in read-only data segment



This changes the i386 linker script and the asm-generic macro it uses 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@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent b38bd33a

arch/i386/kernel/vmlinux.lds.S

+3 −3

Original line number	Diff line number	Diff line
		@@ -60,7 +60,9 @@ SECTIONS
		__stop___ex_table = .;
		}

		BUG_TABLE
		NOTES :text :note

		BUG_TABLE :text

		. = ALIGN(4);
		.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
		@@ -208,6 +210,4 @@ SECTIONS
		STABS_DEBUG

		DWARF_DEBUG

		NOTES
		}

include/asm-generic/vmlinux.lds.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -224,7 +224,11 @@
		}

		#define NOTES \
		.notes : { (.note.) } :note
		.notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
		VMLINUX_SYMBOL(__start_notes) = .; \
		(.note.) \
		VMLINUX_SYMBOL(__stop_notes) = .; \
		}

		#define INITCALLS \
		*(.initcall0.init) \