linux-kernel - [PATCH v4 11/15] objtool: .rodata.cst{2/4/8/16} are not switch tables

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Message-ID: <7814504bb8c4fc2b5dc46149c2167f561b956746.1689091394.git.christophe.leroy@csgroup.eu>
Date:   Tue, 11 Jul 2023 18:08:37 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Sathvika Vasireddy <sv@...ux.ibm.com>,
        Naveen N Rao <naveen@...nel.org>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v4 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 ea0945f2195f..d2a0dfec5909 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2565,7 +2565,8 @@ 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;
 		}
-- 
2.41.0