linux-kernel - [PATCH v7 1/8] s390: vmlinux.lds.S: Reorder sections

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Message-ID: <5530b1cff44cb47c57462874b192e4e9fbceea91.1755535876.git.legion@kernel.org>
Date: Mon, 18 Aug 2025 18:54:55 +0200
From: Alexey Gladkov <legion@...nel.org>
To: Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas.schier@...ux.dev>,
	Petr Pavlu <petr.pavlu@...e.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Daniel Gomez <da.gomez@...sung.com>
Cc: linux-kernel@...r.kernel.org,
	linux-modules@...r.kernel.org,
	linux-kbuild@...r.kernel.org,
	Alexey Gladkov <legion@...nel.org>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	linux-s390@...r.kernel.org,
	kernel test robot <lkp@...el.com>
Subject: [PATCH v7 1/8] s390: vmlinux.lds.S: Reorder sections

In the upcoming changes, the ELF_DETAILS macro will be extended with
the ".modinfo" section, which will cause an error:

>> s390x-linux-ld: .tmp_vmlinux1: warning: allocated section `.modinfo' not in segment
>> s390x-linux-ld: .tmp_vmlinux2: warning: allocated section `.modinfo' not in segment
>> s390x-linux-ld: vmlinux.unstripped: warning: allocated section `.modinfo' not in segment

This happens because the .vmlinux.info use :NONE to override the default
segment and tell the linker to not put the section in any segment at all.

To avoid this, we need to change the sections order that will be placed
in the default segment.

Cc: Heiko Carstens <hca@...ux.ibm.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>
Cc: Alexander Gordeev <agordeev@...ux.ibm.com>
Cc: linux-s390@...r.kernel.org
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202506062053.zbkFBEnJ-lkp@intel.com/
Signed-off-by: Alexey Gladkov <legion@...nel.org>
Acked-by: Heiko Carstens <hca@...ux.ibm.com>
---
 arch/s390/kernel/vmlinux.lds.S | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 1c606dfa595d8..feecf1a6ddb44 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -209,6 +209,11 @@ SECTIONS
 	. = ALIGN(PAGE_SIZE);
 	_end = . ;
 
+	/* Debugging sections.	*/
+	STABS_DEBUG
+	DWARF_DEBUG
+	ELF_DETAILS
+
 	/*
 	 * uncompressed image info used by the decompressor
 	 * it should match struct vmlinux_info
@@ -239,11 +244,6 @@ SECTIONS
 #endif
 	} :NONE
 
-	/* Debugging sections.	*/
-	STABS_DEBUG
-	DWARF_DEBUG
-	ELF_DETAILS
-
 	/*
 	 * Make sure that the .got.plt is either completely empty or it
 	 * contains only the three reserved double words.
-- 
2.50.1