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 <[email protected]>
---
arch/i386/kernel/vmlinux.lds.S | 6 +++---
include/asm-generic/vmlinux.lds.h | 6 +++++-
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S
index aa87b06..f5b1db5 100644
--- a/arch/i386/kernel/vmlinux.lds.S
+++ b/arch/i386/kernel/vmlinux.lds.S
@@ -60,7 +60,9 @@ SECTIONS
__stop___ex_table = .;
}
- BUG_TABLE
+ NOTES :text :note
+
+ BUG_TABLE :text
. = ALIGN(4);
.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
@@ -206,6 +208,4 @@ SECTIONS
STABS_DEBUG
DWARF_DEBUG
-
- NOTES
}
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 84155eb..d86c929 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -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) \
-
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