[tip: x86/build] alpha: Move EXCEPTION_TABLE to RO_DATA segment

[tip-bot2 for Kees Cook]

The following commit has been merged into the x86/build branch of tip:

Commit-ID:     172c8b85dccf331826deda9ef6d7e75fa4f2b3e2
Gitweb:        https://git.kernel.org/tip/172c8b85dccf331826deda9ef6d7e75fa4f2b3e2
Author:        Kees Cook <keescook@xxxxxxxxxxxx>
AuthorDate:    Tue, 29 Oct 2019 14:13:39 -07:00
Committer:     Borislav Petkov <bp@xxxxxxx>
CommitterDate: Mon, 04 Nov 2019 17:57:56 +01:00

alpha: Move EXCEPTION_TABLE to RO_DATA segment

Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: linux-alpha@xxxxxxxxxxxxxxx
Cc: linux-arch@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-c6x-dev@xxxxxxxxxxxxx
Cc: linux-ia64@xxxxxxxxxxxxxxx
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-s390@xxxxxxxxxxxxxxx
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>
Cc: Segher Boessenkool <segher@xxxxxxxxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191029211351.13243-18-keescook@xxxxxxxxxxxx
---
 arch/alpha/kernel/vmlinux.lds.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S
index edc45f4..bc6f727 100644
--- a/arch/alpha/kernel/vmlinux.lds.S
+++ b/arch/alpha/kernel/vmlinux.lds.S
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 
 #define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	16
 
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/thread_info.h>
@@ -35,7 +36,6 @@ SECTIONS
 	_etext = .;	/* End of text section */
 
 	RO_DATA(4096)
-	EXCEPTION_TABLE(16)
 
 	/* Will be freed after init */
 	__init_begin = ALIGN(PAGE_SIZE);