From: Nick Desaulniers <ndesaulniers@google.com>
To: Arnd Bergmann <arnd@arndb.de>, Ard@google.com, Biesheuvel@google.com
Cc: Russell King <rmk+kernel@armlinux.org.uk>,
Masahiro Yamada <masahiroy@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
Nick Desaulniers <ndesaulniers@google.com>
Subject: [PATCH v3 3/4] ARM: only use -mtp=cp15 for the compiler
Date: Mon, 16 May 2022 14:09:53 -0700 [thread overview]
Message-ID: <20220516210954.1660716-4-ndesaulniers@google.com> (raw)
In-Reply-To: <20220516210954.1660716-1-ndesaulniers@google.com>
Avoids an error from the assembler for CONFIG_THUMB2 kernels:
clang-15: error: hardware TLS register is not supported for the thumbv4t
sub-architecture
This flag only makes sense to pass to the compiler, not the assembler.
Perhaps CFLAGS_ABI can be renamed to CPPFLAGS_ABI to reflect that they
will be passed to both the compiler and assembler for sources that
require pre-processing.
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
arch/arm/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 99a7ed7e9f09..1029c2503aef 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -108,7 +108,7 @@ CFLAGS_ABI += -meabi gnu
endif
ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
-CFLAGS_ABI += -mtp=cp15
+KBUILD_CFLAGS += -mtp=cp15
endif
# Accept old syntax despite ".syntax unified"
--
2.36.0.550.gb090851708-goog
next prev parent reply other threads:[~2022-05-16 21:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 21:09 [PATCH v3 0/4] pass -march= only to compiler Nick Desaulniers
2022-05-16 21:09 ` [PATCH v3 1/4] ARM: remove lazy evaluation in Makefile Nick Desaulniers
2022-05-16 21:15 ` Nick Desaulniers
2022-05-16 21:09 ` [PATCH v3 2/4] ARM: use .arch directives instead of assembler command line flags Nick Desaulniers
2022-05-16 21:15 ` Nick Desaulniers
2022-05-16 21:09 ` Nick Desaulniers [this message]
2022-05-16 21:15 ` [PATCH v3 3/4] ARM: only use -mtp=cp15 for the compiler Nick Desaulniers
2022-05-16 21:09 ` [PATCH v3 4/4] ARM: pass -march= only to compiler Nick Desaulniers
2022-05-16 21:16 ` Nick Desaulniers
2022-05-18 1:25 ` kernel test robot
2022-05-18 22:38 ` Nick Desaulniers
2022-05-19 9:38 ` Russell King (Oracle)
2022-05-16 21:14 ` [PATCH v3 0/4] " Nick Desaulniers
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