[PATCH v3 18/29] arm64: Move EXCEPTION_TABLE to RO_DATA segment
From: Kees Cook <hidden>
Date: 2019-10-29 21:18:58
Also in:
linux-alpha, linux-arch, linux-arm-kernel, linux-s390
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA. Also removes the redundant ALIGN, which is already present at the end of the RO_DATA macro. Signed-off-by: Kees Cook <redacted> Acked-by: Will Deacon <will@kernel.org> --- arch/arm64/kernel/vmlinux.lds.S | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index a4b3e6c0680c..9128a26eb45b 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_EXCEPTION_TABLE_ALIGN 8 + #include <asm-generic/vmlinux.lds.h> #include <asm/cache.h> #include <asm/kernel-pgtable.h>
@@ -135,10 +137,9 @@ 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 = .; . += IDMAP_DIR_SIZE;
--
2.17.1