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[PATCH v6 02/21] arm64: ensure the kernel is compiled for LP64

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From: Andrew Pinski <apinski@cavium.com>

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>
---
 arch/arm64/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index cd822d8..d6668a8 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -29,14 +29,19 @@ endif
 KBUILD_CFLAGS	+= -mgeneral-regs-only $(lseinstr)
 KBUILD_AFLAGS	+= $(lseinstr)
 
+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
 else
 KBUILD_CPPFLAGS	+= -mlittle-endian
 AS		+= -EL
 LD		+= -EL
+LDFLAGS		+= -maarch64linux
 endif
 
 CHECKFLAGS	+= -D__aarch64__
-- 
2.5.0

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[RFC5 PATCH v6 00/21] ILP32 for ARM64 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 16/21] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 09/21] arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 05/21] arm64: compat: change config dependences to aarch32 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 19/21] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 15/21] arm64: signal: share lp64 signal routines to ilp32 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 08/21] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 18/21] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 13/21] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 02/21] arm64: ensure the kernel is compiled for LP64 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 04/21] arm64: change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0 instead Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 07/21] thread: move thread bits accessors to separated file Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 10/21] arm64: introduce binfmt_elf32.c Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 17/21] arm64: ilp32: introduce ilp32-specific handlers for sigframe Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 12/21] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  [PATCH v6 11/21] arm64: ilp32: introduce binfmt_ilp32.c Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 18:30 +0100
  Re: [PATCH v6 20/21] all: s390: make compat wrappers the generic  solution Yury Norov <ynorov@caviumnetworks.com> - 2016-01-14 19:20 +0100
  Re: [PATCH v6 20/21] all: s390: make compat wrappers the generic  solution Heiko Carstens <heiko.carstens@de.ibm.com> - 2016-01-15 13:50 +0100
    Re: [PATCH v6 20/21] all: s390: make compat wrappers the generic  solution Heiko Carstens <heiko.carstens@de.ibm.com> - 2016-01-20 09:20 +0100
      Re: [PATCH v6 20/21] all: s390: make compat wrappers the generic  solution Yury Norov <ynorov@caviumnetworks.com> - 2016-01-20 13:20 +0100
  Re: [RFC5 PATCH v6 00/21] ILP32 for ARM64 "Zhangjian (Bamvor)" <bamvor.zhangjian@huawei.com> - 2016-01-18 14:20 +0100
    Re: [RFC5 PATCH v6 00/21] ILP32 for ARM64 Andreas Schwab <schwab@suse.de> - 2016-01-18 14:30 +0100
      Re: [RFC5 PATCH v6 00/21] ILP32 for ARM64 Bamvor Zhang Jian <bamvor.zhangjian@linaro.org> - 2016-01-18 14:50 +0100

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