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ARM: 8588/1: localise objcopy flags

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We currently define OBJCOPYFLAGS in the top-level arm Makefile, and thus
these flags will be passed to all uses of objcopy, kernel-wide, for
which they are not explicitly overridden. The flags we set are intended
for converting a few ELF files into raw binaries, and thus the flags
chosen are problematic for some other uses which do not expect a raw
binary result, e.g. the upcoming lkdtm rodata test:

  http://www.openwall.com/lists/kernel-hardening/2016/06/08/2

This patch localises the objcopy flags such that they are only used for
the cases we require them for today.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Mark Rutland 2016-07-19 11:23:37 +01:00 committed by Russell King
parent bf31c5e07d
commit 3cb59581a8
2 changed files with 2 additions and 1 deletions
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1
arch/arm/Makefile
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@ -23,7 +23,6 @@ ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds
endif
OBJCOPYFLAGS :=-O binary -R .comment -S
GZFLAGS :=-9
#KBUILD_CFLAGS +=-pipe

2
arch/arm/boot/Makefile
View File

@ -11,6 +11,8 @@
# Copyright (C) 1995-2002 Russell King
#
OBJCOPYFLAGS :=-O binary -R .comment -S
ifneq ($(MACHINE),)
include $(MACHINE)/Makefile.boot
endif