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 5.15-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-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 55dc3566efbf127f0df6a35650359dbec058ff8d 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