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Subject[PATCH v2 0/4] compat vdso cleanups
Four fixes for compat vdso, the first three are related, the fourth is

The first three fix a warning observed for `mrproper` targets when
$(CROSS_COMPILE_COMPAT)gcc is not in the $PATH.

The fourth makes is so that CROSS_COMPILE_COMPAT is not necessary to
select COMPAT_VDSO when using clang+lld.

Based on arm64/linux.git/for-next/misc.

Changes v1 -> v2:
* Fix binutils version numbers in 1/4 as per Christian.
* Add new patch 2/4 as per Arnd.
* Rewrite 3/4 to use redirection of stderr to /dev/null, as per
* Add parens and update commit message of 4/4 as per Nathan.

Nick Desaulniers (4):
arm64: vdso32: drop the test for dmb ishld
arm64: vdso32: drop test for -march=armv8-a
arm64: vdso32: suppress error message for 'make mrproper'
arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd

arch/arm64/Kconfig | 3 +-
arch/arm64/include/asm/vdso/compat_barrier.h | 7 ----
arch/arm64/kernel/vdso32/Makefile | 36 +++++---------------
3 files changed, 10 insertions(+), 36 deletions(-)

base-commit: de56379f21c70196ff18c48790e8e43865893869

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