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authorLaura Abbott <labbott@redhat.com>2018-07-30 11:31:18 -0700
committerWill Deacon <will.deacon@arm.com>2018-07-31 10:13:59 +0100
commitce279d374ff315264efcbcef75cc21b9fef8b36f (patch)
tree41c42990bcb86789bc6278ad3fe39cd5e1595c7d /drivers/firmware/efi
parentd26de6c9f458f702b778731b7cb578ccd83623c9 (diff)
download96b-common-ce279d374ff315264efcbcef75cc21b9fef8b36f.tar.gz
efi/libstub: Only disable stackleak plugin for arm64
arm64 uses the full KBUILD_CFLAGS for building libstub as opposed to x86 which doesn't. This means that x86 doesn't pick up the gcc-plugins. We need to disable the stackleak plugin but doing this unconditionally breaks x86 build since it doesn't have any plugins. Switch to disabling the stackleak plugin for arm64 only. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/firmware/efi')
-rw-r--r--drivers/firmware/efi/libstub/Makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 25dd2a14560d..88c322d7c71e 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -11,7 +11,10 @@ cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ -O2 \
-fPIC -fno-strict-aliasing -mno-red-zone \
-mno-mmx -mno-sse -fshort-wchar
-cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie
+# arm64 uses the full KBUILD_CFLAGS so it's necessary to explicitly
+# disable the stackleak plugin
+cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie \
+ $(DISABLE_STACKLEAK_PLUGIN)
cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \
-fno-builtin -fpic -mno-single-pic-base
@@ -21,7 +24,6 @@ KBUILD_CFLAGS := $(cflags-y) -DDISABLE_BRANCH_PROFILING \
-D__NO_FORTIFY \
$(call cc-option,-ffreestanding) \
$(call cc-option,-fno-stack-protector) \
- $(DISABLE_STACKLEAK_PLUGIN)
GCOV_PROFILE := n
KASAN_SANITIZE := n