[PATCH 25/29] xtensa: Move EXCEPTION_TABLE to RO_DATA segment
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- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- Subject: [PATCH 25/29] xtensa: Move EXCEPTION_TABLE to RO_DATA segment
- From: Kees Cook <keescook@xxxxxxxxxxxx>
- Date: Thu, 26 Sep 2019 10:55:58 -0700
- Cc: Kees Cook <keescook@xxxxxxxxxxxx>, Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, linux-arch@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-c6x-dev@xxxxxxxxxxxxx, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Michal Simek <monstr@xxxxxxxxx>, linux-parisc@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- In-reply-to: <20190926175602.33098-1-keescook@chromium.org>
- References: <20190926175602.33098-1-keescook@chromium.org>
The EXCEPTION_TABLE is read-only, so collapse it into RO_DATA.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
arch/xtensa/kernel/vmlinux.lds.S | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index bdbd7c4056c1..7341964722ae 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -14,6 +14,8 @@
* Joe Taylor <joe@xxxxxxxxxxxxx, joetylr@xxxxxxxxx>
*/
+#define RO_DATA_EXCEPTION_TABLE_ALIGN 16
+
#include <asm-generic/vmlinux.lds.h>
#include <asm/page.h>
#include <asm/thread_info.h>
@@ -130,7 +132,6 @@ SECTIONS
.fixup : { *(.fixup) }
- EXCEPTION_TABLE(16)
/* Data section */
_sdata = .;
--
2.17.1
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