3 files changed, 15 insertions, 2 deletions
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index c063e1ff96b2..24fbe803a0d3 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -68,6 +68,7 @@ const struct option check_options[] = {
 	OPT_BOOLEAN('n', "noinstr", &opts.noinstr, "validate noinstr rules"),
 	OPT_BOOLEAN('o', "orc", &opts.orc, "generate ORC metadata"),
 	OPT_BOOLEAN('r', "retpoline", &opts.retpoline, "validate and annotate retpoline usage"),
+	OPT_BOOLEAN(0,   "rethunk", &opts.rethunk, "validate and annotate rethunk usage"),
 	OPT_BOOLEAN(0,   "unret", &opts.unret, "validate entry unret placement"),
 	OPT_BOOLEAN('l', "sls", &opts.sls, "validate straight-line-speculation mitigations"),
 	OPT_BOOLEAN('s', "stackval", &opts.stackval, "validate frame pointer rules"),
@@ -124,6 +125,7 @@ static bool opts_valid(void)
 	    opts.noinstr		||
 	    opts.orc			||
 	    opts.retpoline		||
+	    opts.rethunk		||
 	    opts.sls			||
 	    opts.stackval		||
 	    opts.static_call		||
@@ -136,6 +138,11 @@ static bool opts_valid(void)
 		return true;
 	}
 
+	if (opts.unret && !opts.rethunk) {
+		ERROR("--unret requires --rethunk");
+		return false;
+	}
+
 	if (opts.dump_orc)
 		return true;
 
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index ddfdd138cc2a..7bebdb8867cd 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -3732,8 +3732,11 @@ static int validate_retpoline(struct objtool_file *file)
 			continue;
 
 		if (insn->type == INSN_RETURN) {
-			WARN_FUNC("'naked' return found in RETPOLINE build",
-				  insn->sec, insn->offset);
+			if (opts.rethunk) {
+				WARN_FUNC("'naked' return found in RETHUNK build",
+					  insn->sec, insn->offset);
+			} else
+				continue;
 		} else {
 			WARN_FUNC("indirect %s found in RETPOLINE build",
 				  insn->sec, insn->offset,
@@ -4264,7 +4267,9 @@ int check(struct objtool_file *file)
 		if (ret < 0)
 			goto out;
 		warnings += ret;
+	}
 
+	if (opts.rethunk) {
 		ret = create_return_sites_sections(file);
 		if (ret < 0)
 			goto out;
diff --git a/tools/objtool/include/objtool/builtin.h b/tools/objtool/include/objtool/builtin.h
index 0c476b0b40a3..42a52f1a0add 100644
--- a/tools/objtool/include/objtool/builtin.h
+++ b/tools/objtool/include/objtool/builtin.h
@@ -19,6 +19,7 @@ struct opts {
 	bool noinstr;
 	bool orc;
 	bool retpoline;
+	bool rethunk;
 	bool unret;
 	bool sls;
 	bool stackval;