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| author | Andrew Pinski <apinski@cavium.com> | 2017-09-18 11:20:20 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-09-18 11:20:20 +0100 |
| commit | 3d6a7b99e3fa29b92d6288487e057e0a596bd2b0 (patch) | |
| tree | 954a9bf1e95bac58a2b2145589d79f509474181d /arch/arm64/Makefile | |
| parent | c73cc120a33e12e4e254b4b42bc613204ccb923b (diff) | |
| download | lwn-3d6a7b99e3fa29b92d6288487e057e0a596bd2b0.tar.gz lwn-3d6a7b99e3fa29b92d6288487e057e0a596bd2b0.zip | |
arm64: ensure the kernel is compiled for LP64
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 <Andrew.Pinski@caviumnetworks.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/Makefile')
| -rw-r--r-- | arch/arm64/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 9b41f1e3b1a0..939b310913cf 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -50,17 +50,22 @@ 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 CHECKFLAGS += -D__AARCH64EB__ AS += -EB LD += -EB +LDFLAGS += -maarch64linuxb UTS_MACHINE := aarch64_be else KBUILD_CPPFLAGS += -mlittle-endian CHECKFLAGS += -D__AARCH64EL__ AS += -EL LD += -EL +LDFLAGS += -maarch64linux UTS_MACHINE := aarch64 endif |