linux-kernel - [tip: objtool/core] objtool: Unify STACK_FRAME_NON

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Message-ID: <176060834061.709179.10804798631118756137.tip-bot2@tip-bot2>
Date: Thu, 16 Oct 2025 09:52:20 -0000
From: "tip-bot2 for Josh Poimboeuf" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Petr Mladek <pmladek@...e.com>, Joe Lawrence <joe.lawrence@...hat.com>,
 Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: objtool/core] objtool: Unify STACK_FRAME_NON_STANDARD entry sizes

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     f6b740ef5f4724f95363ac0d664e88d221343fa1
Gitweb:        https://git.kernel.org/tip/f6b740ef5f4724f95363ac0d664e88d221343fa1
Author:        Josh Poimboeuf <jpoimboe@...nel.org>
AuthorDate:    Wed, 17 Sep 2025 09:03:56 -07:00
Committer:     Josh Poimboeuf <jpoimboe@...nel.org>
CommitterDate: Tue, 14 Oct 2025 14:50:17 -07:00

objtool: Unify STACK_FRAME_NON_STANDARD entry sizes

The C implementation of STACK_FRAME_NON_STANDARD emits 8-byte entries,
whereas the asm version's entries are only 4 bytes.

Make them consistent by converting the asm version to 8-byte entries.

This is much easier than converting the C version to 4-bytes, which
would require awkwardly putting inline asm in a dummy function in order
to pass the 'func' pointer to the asm.

Acked-by: Petr Mladek <pmladek@...e.com>
Tested-by: Joe Lawrence <joe.lawrence@...hat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 include/linux/objtool.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/objtool.h b/include/linux/objtool.h
index 4fea6a0..b18ab53 100644
--- a/include/linux/objtool.h
+++ b/include/linux/objtool.h
@@ -92,7 +92,7 @@
 
 .macro STACK_FRAME_NON_STANDARD func:req
 	.pushsection .discard.func_stack_frame_non_standard, "aw"
-	.long \func - .
+	.quad \func
 	.popsection
 .endm