linux-kernel - [PATCH v3 3/7] Revert "arm64: bti: Require clang >= 10.0.1 for in-kernel BTI support"

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Message-Id: <20200902225911.209899-4-ndesaulniers@google.com>
Date:   Wed,  2 Sep 2020 15:59:07 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Marco Elver <elver@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        clang-built-linux@...glegroups.com,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Will Deacon <will@...nel.org>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [PATCH v3 3/7] Revert "arm64: bti: Require clang >= 10.0.1 for
 in-kernel BTI support"

This reverts commit b9249cba25a5dce5de87e5404503a5e11832c2dd.

The minimum supported version of clang is now 10.0.1.

Suggested-by: Nathan Chancellor <natechancellor@...il.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.com>
Reviewed-by: Kees Cook <keescook@...omium.org>
Reviewed-by: Nathan Chancellor <natechancellor@...il.com>
---
 arch/arm64/Kconfig | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 6d232837cbee..2a70b85b1a61 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1630,8 +1630,6 @@ config ARM64_BTI_KERNEL
 	depends on CC_HAS_BRANCH_PROT_PAC_RET_BTI
 	# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94697
 	depends on !CC_IS_GCC || GCC_VERSION >= 100100
-	# https://reviews.llvm.org/rGb8ae3fdfa579dbf366b1bb1cbfdbf8c51db7fa55
-	depends on !CC_IS_CLANG || CLANG_VERSION >= 100001
 	depends on !(CC_IS_CLANG && GCOV_KERNEL)
 	depends on (!FUNCTION_GRAPH_TRACER || DYNAMIC_FTRACE_WITH_REGS)
 	help
-- 
2.28.0.402.g5ffc5be6b7-goog