diff mbox series

[16/29] x86: Move EXCEPTION_TABLE to RO_DATA segment

Message ID 20190926175602.33098-17-keescook@chromium.org (mailing list archive)
State Not Applicable
Headers show
Series vmlinux.lds.h: Refactor EXCEPTION_TABLE and NOTES | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch next (6edfc6487b474fe01857dc3f1a9cd701bb9b21c8)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 15 lines checked

Commit Message

Kees Cook Sept. 26, 2019, 5:55 p.m. UTC 
The exception table was needlessly marked executable. In preparation
for execute-only memory, this moves the table into the RO_DATA segment
via a new macro that can be used by any architectures that want to make
a similar consolidation.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 arch/x86/kernel/vmlinux.lds.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index a1a758e25b2b..a5c8571e4967 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -22,6 +22,7 @@ 
 #endif
 
 #define EMITS_PT_NOTE
+#define RO_DATA_EXCEPTION_TABLE_ALIGN	16
 
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/asm-offsets.h>
@@ -145,8 +146,6 @@  SECTIONS
 #endif
 	} :text = 0x9090
 
-	EXCEPTION_TABLE(16)
-
 	/* End of text section, which should occupy whole number of pages */
 	_etext = .;
 	. = ALIGN(PAGE_SIZE);