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s390/boot: vmlinux.lds.S: handle commonly discarded sections

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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>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240207-s390-lld-and-orphan-warn-v1-9-8a665b3346ab@kernel.org
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Nathan Chancellor 2024-02-07 17:15:01 -07:00 committed by Heiko Carstens
parent 6a4d37c886
commit c0f98ea0e7
1 changed files with 1 additions and 0 deletions
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arch/s390/boot/vmlinux.lds.S
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@ -144,6 +144,7 @@ SECTIONS
/* Sections to be discarded */
/DISCARD/ : {
COMMON_DISCARDS
*(.eh_frame)
*(__ex_table)
*(*__ksymtab*)