# SPDX-License-Identifier: GPL-2.0 KBUILD_AFLAGS += -D__DISABLE_EXPORTS KBUILD_CFLAGS += -D__DISABLE_EXPORTS -mcmodel=small -fPIC \ -Os -DDISABLE_BRANCH_PROFILING \ $(DISABLE_STACKLEAK_PLUGIN) \ $(DISABLE_LATENT_ENTROPY_PLUGIN) \ -fno-stack-protector -D__NO_FORTIFY \ -fno-jump-tables \ -include $(srctree)/include/linux/hidden.h # disable ftrace hooks and LTO KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO),$(KBUILD_CFLAGS)) KASAN_SANITIZE := n KCSAN_SANITIZE := n KMSAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n obj-$(CONFIG_X86_64) += gdt_idt.o map_kernel.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += sme.o sev-startup.o pi-objs := $(patsubst %.o,$(obj)/%.o,$(obj-y)) lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o # # Disable objtool validation for all library code, which is intended # to be linked into the decompressor or the EFI stub but not vmlinux # $(patsubst %.o,$(obj)/%.o,$(lib-y)): OBJECT_FILES_NON_STANDARD := y # # Invoke objtool for each object individually to check for absolute # relocations, even if other objtool actions are being deferred. # $(pi-objs): objtool-enabled = 1 $(pi-objs): objtool-args = $(if $(delay-objtool),,$(objtool-args-y)) --noabs # # Confine the startup code by prefixing all symbols with __pi_ (for position # independent). This ensures that startup code can only call other startup # code, or code that has explicitly been made accessible to it via a symbol # alias. # $(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ $(obj)/%.pi.o: $(obj)/%.o FORCE $(call if_changed,objcopy) targets += $(obj-y) obj-y := $(patsubst %.o,%.pi.o,$(obj-y))