lkml.org 
[lkml]   [2019]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 18/29] arm64: Move EXCEPTION_TABLE to RO_DATA segment
Date
The EXCEPTION_TABLE is read-only, so collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/kernel/vmlinux.lds.S | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 81d94e371c95..c6ba2eee0ee8 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -5,6 +5,8 @@
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*/

+#define RO_DATA_EXCEPTION_TABLE_ALIGN 8
+
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
#include <asm/kernel-pgtable.h>
@@ -135,8 +137,8 @@ SECTIONS
. = ALIGN(SEGMENT_ALIGN);
_etext = .; /* End of text section */

- RO_DATA(PAGE_SIZE) /* everything from this point to */
- EXCEPTION_TABLE(8) /* __init_begin will be marked RO NX */
+ /* everything from this point to __init_begin will be marked RO NX */
+ RO_DATA(PAGE_SIZE)

. = ALIGN(PAGE_SIZE);
idmap_pg_dir = .;
--
2.17.1
\
 
 \ /
  Last update: 2019-09-26 19:57    [W:0.160 / U:1.916 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site