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Mon, 9 Apr 2018 00:30:31 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.9 146/293] arm64: pass endianness info to sparse Thread-Topic: [PATCH AUTOSEL for 4.9 146/293] arm64: pass endianness info to sparse Thread-Index: AQHTz5kqEJjZeBYDU0+UFEjK1aG7Yg== Date: Mon, 9 Apr 2018 00:24:47 +0000 Message-ID: <20180409002239.163177-146-alexander.levin@microsoft.com> References: <20180409002239.163177-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002239.163177-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; DM5PR2101MB0807; 7:xFMDZmlRVAzDZFurWDWW552ohq88Lcqhq/i/pu67W45ufWCks53sg8ekptnKf712Hbdd914QQUXSrVicyyDoIWukZQV+bo5ONcwLDXznLYMz/Hg7tqXMKq/DCQctYmS6wKF+cubvkVIdPeZoesJ6SbdTvAejQWBXd6vt966o41Ebt58nJqpgO/W9wpuMkAQwITb5bmq2Zgzma/KD99lKQf6qSEbULQ+9j1CHvK0NCZXDz4BBVqA12DqO3ENHtyRl; 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This macro is predefined by the compiler but sparse knows nothing about it and thus may pre-process files differently from what gcc would. Fix this by passing '-D__AARCH64EL__' or '-D__AARCH64EB__' to sparse depending of the endianness of the kernel, like defined by GCC. Note: In most case it won't change anything since most arm64 use little-endian (but an allyesconfig would use big-endian!). CC: Catalin Marinas CC: Will Deacon CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Luc Van Oostenryck Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index bc66f4b6a1cb..b0babc09577d 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -48,11 +48,13 @@ KBUILD_AFLAGS += $(lseinstr) ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian +CHECKFLAGS += -D__AARCH64EB__ AS += -EB LD += -EB UTS_MACHINE := aarch64_be else KBUILD_CPPFLAGS += -mlittle-endian +CHECKFLAGS += -D__AARCH64EL__ AS += -EL LD += -EL UTS_MACHINE := aarch64