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Message-ID: <70a09ec0b0704398b2bbfb3153ce3d7cb8a381be.1743136205.git.jpoimboe@kernel.org>
Date: Thu, 27 Mar 2025 22:04:22 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 2/3] objtool: Fix STACK_FRAME_NON_STANDARD for cold subfunctions
The recent STACK_FRAME_NON_STANDARD refactoring forgot about .cold
subfunctions. They must also be ignored.
Fixes the following warning:
drivers/gpu/drm/vmwgfx/vmwgfx_msg.o: warning: objtool: vmw_recv_msg.cold+0x0: unreachable instruction
Fixes: c84301d706c5 ("objtool: Ignore entire functions rather than instructions")
Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
tools/objtool/check.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 29de1709ea00..fff9d7a2947a 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1014,6 +1014,8 @@ static int add_ignores(struct objtool_file *file)
}
func->ignore = true;
+ if (func->cfunc)
+ func->cfunc->ignore = true;
}
return 0;
--
2.48.1
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