[PATCH v6 12/16] objtool: Read special sections with alts only when specific options are selected

From: Sathvika Vasireddy <sv@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: jpoimboe@redhat.com, peterz@infradead.org,
	linux-kernel@vger.kernel.org, aik@ozlabs.ru, mpe@ellerman.id.au,
	mingo@redhat.com, christophe.leroy@csgroup.eu,
	rostedt@goodmis.org, mbenes@suse.cz, npiggin@gmail.com,
	chenzhongjin@huawei.com, naveen.n.rao@linux.vnet.ibm.com,
	sv@linux.ibm.com
Subject: [PATCH v6 12/16] objtool: Read special sections with alts only when specific options are selected
Date: Mon, 14 Nov 2022 23:27:50 +0530	[thread overview]
Message-ID: <20221114175754.1131267-13-sv@linux.ibm.com> (raw)
In-Reply-To: <20221114175754.1131267-1-sv@linux.ibm.com>

Call add_special_section_alts() only when stackval or orc or uaccess or
noinstr options are passed to objtool.

Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
---
 tools/objtool/check.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 71cf4b4ba1da..752a6ffd5c4c 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2392,9 +2392,11 @@ static int decode_sections(struct objtool_file *file)
 	 * Must be before add_jump_destinations(), which depends on 'func'
 	 * being set for alternatives, to enable proper sibling call detection.
 	 */
-	ret = add_special_section_alts(file);
-	if (ret)
-		return ret;
+	if (opts.stackval || opts.orc || opts.uaccess || opts.noinstr) {
+		ret = add_special_section_alts(file);
+		if (ret)
+			return ret;
+	}
 
 	ret = add_jump_destinations(file);
 	if (ret)
-- 
2.31.1

