linux-kernel - [PATCH 0/3] compat vdso cleanups

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Date:   Tue, 12 Oct 2021 16:46:03 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     llvm@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [PATCH 0/3] compat vdso cleanups

Three fixes for compat vdso, the first two are related, the third is
standalone.

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

The third 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.

Nick Desaulniers (3):
  arm64: vdso32: drop the test for dmb ishld
  arm64: vdso32: lazily invoke COMPAT_CC
  arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd

 arch/arm64/Kconfig                           |  3 +-
 arch/arm64/include/asm/vdso/compat_barrier.h |  2 +-
 arch/arm64/kernel/vdso32/Makefile            | 33 ++++++--------------
 3 files changed, 12 insertions(+), 26 deletions(-)


base-commit: de56379f21c70196ff18c48790e8e43865893869
-- 
2.33.0.882.g93a45727a2-goog