This is a note to let you know that I've just added the patch titled
s390/vdso: Drop '-shared' from KBUILD_CFLAGS_64
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
s390-vdso-drop-shared-from-kbuild_cflags_64.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4e08db7f5d104a4c255df4284b1d52b7ccd2601e
Author: Nathan Chancellor <nathan@xxxxxxxxxx>
Date: Wed Jan 11 20:05:07 2023 -0700
s390/vdso: Drop '-shared' from KBUILD_CFLAGS_64
[ Upstream commit fd8589dce8107e2ce62e92f76089654462dd67b4 ]
When clang's -Qunused-arguments is dropped from KBUILD_CPPFLAGS, it
points out that there is a linking phase flag added to CFLAGS, which
will only be used for compiling
clang-16: error: argument unused during compilation: '-shared' [-Werror,-Wunused-command-line-argument]
'-shared' is already present in ldflags-y so it can just be dropped.
Fixes: 2b2a25845d53 ("s390/vdso: Use $(LD) instead of $(CC) to link vDSO")
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Acked-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Reviewed-by: Sven Schnelle <svens@xxxxxxxxxxxxx>
Tested-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
Tested-by: Anders Roxell <anders.roxell@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index 9e2b95a222a98..1605ba45ac4c0 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -25,7 +25,7 @@ KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS))
KBUILD_AFLAGS_64 += -m64 -s
KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
-KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin
+KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin
ldflags-y := -fPIC -shared -soname=linux-vdso64.so.1 \
--hash-style=both --build-id=sha1 -T
