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From: Nathan Chancellor <nathan@kernel.org>
To: hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com
Cc: borntraeger@linux.ibm.com, svens@linux.ibm.com,
	maskray@google.com,  ndesaulniers@google.com,
	linux-s390@vger.kernel.org,  linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev, patches@lists.linux.dev,
	 Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH 09/11] s390/boot: vmlinux.lds.S: Handle commonly discarded sections
Date: Wed, 07 Feb 2024 17:15:01 -0700	[thread overview]
Message-ID: <20240207-s390-lld-and-orphan-warn-v1-9-8a665b3346ab@kernel.org> (raw)
In-Reply-To: <20240207-s390-lld-and-orphan-warn-v1-0-8a665b3346ab@kernel.org>

When building with CONFIG_LD_ORPHAN_WARN after selecting
CONFIG_ARCH_HAS_LD_ORPHAN_WARN, there are several series of warnings
from the various discardable sections that the kernel adds for build
purposes that are not needed at runtime:

  s390-linux-ld: warning: orphan section `.export_symbol' from `arch/s390/boot/decompressor.o' being placed in section `.export_symbol'
  s390-linux-ld: warning: orphan section `.discard.addressable' from `arch/s390/boot/decompressor.o' being placed in section `.discard.addressable'
  s390-linux-ld: warning: orphan section `.modinfo' from `arch/s390/boot/decompressor.o' being placed in section `.modinfo'

include/asm-generic/vmlinux.lds.h has a macro for easily discarding
these sections across the kernel named COMMON_DISCARDS, use it to clear
up the warnings.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 arch/s390/boot/vmlinux.lds.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/s390/boot/vmlinux.lds.S b/arch/s390/boot/vmlinux.lds.S
index 2bef450e84e9..806bca35e3f1 100644
--- a/arch/s390/boot/vmlinux.lds.S
+++ b/arch/s390/boot/vmlinux.lds.S
@@ -147,6 +147,7 @@ SECTIONS
 
 	/* Sections to be discarded */
 	/DISCARD/ : {
+		COMMON_DISCARDS
 		*(.eh_frame)
 		*(__ex_table)
 		*(*__ksymtab*)

-- 
2.43.0


  parent reply	other threads:[~2024-02-08  0:15 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-08  0:14 [PATCH 00/11] s390: Support linking with ld.lld Nathan Chancellor
2024-02-08  0:14 ` [PATCH 01/11] s390: boot: Add support for CONFIG_LD_ORPHAN_WARN Nathan Chancellor
2024-02-08  0:14 ` [PATCH 02/11] s390: vmlinux.lds.S: Handle '.data.rel' sections explicitly Nathan Chancellor
2024-02-08  0:14 ` [PATCH 03/11] s390: vmlinux.lds.S: Explicitly handle '.got' and '.plt' sections Nathan Chancellor
2024-02-13  5:31   ` Fangrui Song
2024-02-14 12:20     ` Heiko Carstens
2024-02-14 19:48       ` Nathan Chancellor
2024-02-08  0:14 ` [PATCH 04/11] s390: vmlinux.lds.S: Discard unnecessary sections Nathan Chancellor
2024-02-12 13:55   ` Heiko Carstens
2024-02-12 15:19     ` Heiko Carstens
2024-02-13  0:15     ` Nathan Chancellor
2024-02-08  0:14 ` [PATCH 05/11] s390/boot: vmlinux.lds.S: Handle '.init.text' Nathan Chancellor
2024-02-08  0:14 ` [PATCH 06/11] s390/boot: vmlinux.lds.S: Handle '.rela' sections Nathan Chancellor
2024-02-13  5:18   ` Fangrui Song
2024-02-14 12:17     ` Heiko Carstens
2024-02-14 21:32       ` Fangrui Song
2024-02-08  0:14 ` [PATCH 07/11] s390/boot: vmlinux.lds.S: Handle DWARF debug sections Nathan Chancellor
2024-02-13  5:33   ` Fangrui Song
2024-02-08  0:15 ` [PATCH 08/11] s390/boot: vmlinux.lds.S: Handle ELF required sections Nathan Chancellor
2024-02-08  0:15 ` Nathan Chancellor [this message]
2024-02-08  0:15 ` [PATCH 10/11] s390: Select CONFIG_ARCH_WANT_LD_ORPHAN_WARN Nathan Chancellor
2024-02-08  0:15 ` [PATCH 11/11] s390: Link vmlinux with '-z notext' Nathan Chancellor
2024-02-13  5:20   ` Fangrui Song
2024-02-08 23:14 ` [PATCH 00/11] s390: Support linking with ld.lld Justin Stitt
2024-02-09 11:20 ` Heiko Carstens
2024-02-09 15:08   ` Nathan Chancellor
2024-02-14 13:43 ` Heiko Carstens
2024-02-14 19:57   ` Nathan Chancellor

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