From: Luc Van Oostenryck luc.vanoostenryck@gmail.com
[ Upstream commit bcde519e8c325f3cc1fcf443eb6466e6bb3a3aca ]
ARM64 depends on the macro __AARCH64EB__ being defined or not to correctly select or define endian-specific macros, structures or pieces of code.
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 catalin.marinas@arm.com CC: Will Deacon will.deacon@arm.com CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Luc Van Oostenryck luc.vanoostenryck@gmail.com Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- 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