linux-kernel - [PATCH v5 11/15] objtool: .rodata.cst{2/4/8/16} are not switch tables

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Message-ID: <c7449575c94672ec0ba5091e03007e0b052c15dc.1736955567.git.christophe.leroy@csgroup.eu>
Date: Wed, 15 Jan 2025 23:42:51 +0100
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Julien Thierry <jthierry@...hat.com>,
	Miroslav Benes <mbenes@...e.cz>,
	Raphael Gault <raphael.gault@....com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Naveen N Rao <naveen@...nel.org>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
	linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	llvm@...ts.linux.dev
Subject: [PATCH v5 11/15] objtool: .rodata.cst{2/4/8/16} are not switch tables

Exclude sections named
  .rodata.cst2
  .rodata.cst4
  .rodata.cst8
  .rodata.cst16
as they won't contain switch tables.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 tools/objtool/check.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 87b81d8e01c0..91436f4b3622 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2506,7 +2506,8 @@ static void mark_rodata(struct objtool_file *file)
 	 */
 	for_each_sec(file, sec) {
 		if (!strncmp(sec->name, ".rodata", 7) &&
-		    !strstr(sec->name, ".str1.")) {
+		    !strstr(sec->name, ".str1.") &&
+		    !strstr(sec->name, ".cst")) {
 			sec->rodata = true;
 			found = true;
 		}
-- 
2.47.0