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authorMark Rutland <mark.rutland@arm.com>2016-07-12 16:28:01 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2016-07-19 15:30:23 +0100
commitf8fa70f392fab8697b6358bb7e4f8c3e8429ec7b (patch)
tree4465e46c9ec93dedf7c88a63cf9d4b4b50fc2f66 /arch
parent9df53ff2bb89bd9c60e655baaf78251c49c72578 (diff)
downloadlinux-f8fa70f392fab8697b6358bb7e4f8c3e8429ec7b.tar.bz2
arm64: localise Image objcopy flags
We currently define OBJCOPYFLAGS in the top-level arm64 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 vmlinux (and ELF) into Image (a raw binary), 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 vmlinux -> Image conversion. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Acked-by: Kees Cook <keescook@chromium.org> Tested-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/Makefile1
-rw-r--r--arch/arm64/boot/Makefile2
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 4b6f84bf2ab9..393103b8abe4 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -12,7 +12,6 @@
LDFLAGS_vmlinux :=-p --no-undefined -X
CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
-OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
GZFLAGS :=-9
ifneq ($(CONFIG_RELOCATABLE),)
diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile
index 305c552b5ec1..1f012c506434 100644
--- a/arch/arm64/boot/Makefile
+++ b/arch/arm64/boot/Makefile
@@ -14,6 +14,8 @@
# Based on the ia64 boot/Makefile.
#
+OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
+
targets := Image Image.gz
$(obj)/Image: vmlinux FORCE