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diff --git a/Makefile b/Makefile
index 554683d..087e0c0 100644
--- a/Makefile
+++ b/Makefile
@@ -535,6 +535,9 @@ else
KBUILD_CFLAGS += -O2
endif
+# conserve stack if available
+KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
+
include $(srctree)/arch/$(SRCARCH)/Makefile
ifneq ($(CONFIG_FRAME_WARN),0)
@@ -579,9 +582,6 @@ KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
# disable invalid "can't wrap" optimizations for signed / pointers
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
-# conserve stack if available
-KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
-
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
# But warn user when we do so
warn-assign = \
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 767874d..89afaea 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -93,6 +93,11 @@ ifeq ($(CONFIG_ARM_UNWIND),y)
CFLAGS_ABI +=-funwind-tables
endif
+ifeq ($(CONFIG_ALIGNMENT_TRAP),y)
+CFLAGS_ABI +=$(call cc-option,-mno-unaligned-access,)
+endif
+KBUILD_CFLAGS += $(call cc-option,-fno-conserve-stack,)
+
ifeq ($(CONFIG_THUMB2_KERNEL),y)
AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
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