linux-kernel - [PATCH 06/13] objtool: Remove --unret dependency on --rethunk

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Message-ID: <c6f5635784a28ed4b10ac4307b1858e015e6eff0.1741975349.git.jpoimboe@kernel.org>
Date: Fri, 14 Mar 2025 12:29:04 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Brendan Jackman <jackmanb@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH 06/13] objtool: Remove --unret dependency on --rethunk

With unret validation enabled and IBT/LTO disabled, objtool runs on TUs
with --rethunk and on vmlinux.o with --unret.  So this dependency isn't
valid as they don't always run on the same object.

This error never triggered before because --unret is always coupled with
--noinstr, so the first conditional in opts_valid() returns early due to
opts.noinstr being true.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 tools/objtool/builtin-check.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index 387d56a7f5fb..c7275cf7641b 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -151,11 +151,6 @@ static bool opts_valid(void)
 		return true;
 	}
 
-	if (opts.unret && !opts.rethunk) {
-		ERROR("--unret requires --rethunk");
-		return false;
-	}
-
 	if (opts.dump_orc)
 		return true;
 
-- 
2.48.1