Tom Saeger c1c551bebf sh: define RUNTIME_DISCARD_EXIT ... sh vmlinux fails to link with GNU ld < 2.40 (likely < 2.36) since commit 99cb0d917f ("arch: fix broken BuildID for arm64 and riscv"). This is similar to fixes for powerpc and s390: commit 4b9880dbf3 ("powerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT"). commit a494398bde ("s390: define RUNTIME_DISCARD_EXIT to fix link error with GNU ld < 2.36"). $ sh4-linux-gnu-ld --version | head -n1 GNU ld (GNU Binutils for Debian) 2.35.2 $ make ARCH=sh CROSS_COMPILE=sh4-linux-gnu- microdev_defconfig $ make ARCH=sh CROSS_COMPILE=sh4-linux-gnu- `.exit.text' referenced in section `__bug_table' of crypto/algboss.o: defined in discarded section `.exit.text' of crypto/algboss.o `.exit.text' referenced in section `__bug_table' of drivers/char/hw_random/core.o: defined in discarded section `.exit.text' of drivers/char/hw_random/core.o make[2]: *** [scripts/Makefile.vmlinux:34: vmlinux] Error 1 make[1]: *** [Makefile:1252: vmlinux] Error 2 arch/sh/kernel/vmlinux.lds.S keeps EXIT_TEXT: /* * .exit.text is discarded at runtime, not link time, to deal with * references from __bug_table */ .exit.text : AT(ADDR(.exit.text)) { EXIT_TEXT } However, EXIT_TEXT is thrown away by DISCARD(include/asm-generic/vmlinux.lds.h) because sh does not define RUNTIME_DISCARD_EXIT. GNU ld 2.40 does not have this issue and builds fine. This corresponds with Masahiro's comments in a494398bde: "Nathan [Chancellor] also found that binutils commit 21401fc7bf67 ("Duplicate output sections in scripts") cured this issue, so we cannot reproduce it with binutils 2.36+, but it is better to not rely on it." Link: https://lkml.kernel.org/r/9166a8abdc0f979e50377e61780a4bba1dfa2f52.1674518464.git.tom.saeger@oracle.com Fixes: 99cb0d917f ("arch: fix broken BuildID for arm64 and riscv") Link: https://lore.kernel.org/all/Y7Jal56f6UBh1abE@dev-arch.thelio-3990X/ Link: https://lore.kernel.org/all/20230123194218.47ssfzhrpnv3xfez@oracle.com/ Signed-off-by: Tom Saeger <tom.saeger@oracle.com> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Dennis Gilmore <dennis@ausil.us> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Naresh Kamboju <naresh.kamboju@linaro.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-01-31 16:44:09 -08:00
..
alpha
arc
arm	ARM: renumber bits related to _TIF_WORK_MASK	2023-01-04 07:55:02 -07:00
arm64	ARM:	2023-01-13 14:41:50 -06:00
csky
hexagon
ia64	ia64: fix build error due to switch case label appearing next to declaration	2023-01-31 16:44:08 -08:00
loongarch
m68k
microblaze
mips	of/fdt: run soc memory setup when early_init_dt_scan_memory fails	2023-01-03 18:41:01 -06:00
nios2
openrisc
parisc
powerpc	powerpc fixes for 6.2 #3	2023-01-15 07:09:41 -06:00
riscv	riscv: uaccess: fix type of 0 variable on error in get_user()	2023-01-05 12:30:41 -08:00
s390	s390: update defconfigs	2023-01-11 21:26:40 +01:00
sh	sh: define RUNTIME_DISCARD_EXIT	2023-01-31 16:44:09 -08:00
sparc
um
x86	- Make sure the poking PGD is pinned for Xen PV as it requires it this way	2023-01-15 07:17:44 -06:00
xtensa	xtensa: drop unused members of struct thread_struct	2023-01-06 23:33:11 -08:00
.gitignore
Kconfig