[PATCH 06/20] arm64: ensure the kernel is compiled for LP64
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STALE3520d
REVIEWED: 1 (0M)
From: Yury Norov <hidden>
Date: 2017-01-09 11:32:01
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Revision v7 of 15 in this series; 1 review trailer.
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From: Andrew Pinski <redacted> The kernel needs to be compiled as a LP64 binary for ARM64, even when using a compiler that defaults to code-generation for the ILP32 ABI. Consequently, we need to explicitly pass '-mabi=lp64' (supported on gcc-4.9 and newer). Signed-off-by: Andrew Pinski <redacted> Signed-off-by: Philipp Tomsich <redacted> Signed-off-by: Christoph Muellner <redacted> Signed-off-by: Yury Norov <redacted> Reviewed-by: David Daney <redacted> --- arch/arm64/Makefile | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index b9a4a93..c89734d 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile@@ -48,15 +48,20 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) KBUILD_AFLAGS += $(lseinstr) $(brokengasinst) +KBUILD_CFLAGS += $(call cc-option,-mabi=lp64) +KBUILD_AFLAGS += $(call cc-option,-mabi=lp64) + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian AS += -EB LD += -EB +LDFLAGS += -maarch64linuxb UTS_MACHINE := aarch64_be else KBUILD_CPPFLAGS += -mlittle-endian AS += -EL LD += -EL +LDFLAGS += -maarch64linux UTS_MACHINE := aarch64 endif
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2.7.4