1# SPDX-License-Identifier: GPL-2.0 2# 3# Makefile for the linux kernel. 4# 5 6CFLAGS_armv8_deprecated.o := -I$(src) 7 8CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) 9CFLAGS_REMOVE_insn.o = $(CC_FLAGS_FTRACE) 10CFLAGS_REMOVE_return_address.o = $(CC_FLAGS_FTRACE) 11 12# Remove stack protector to avoid triggering unneeded stack canary 13# checks due to randomize_kstack_offset. 14CFLAGS_REMOVE_syscall.o = -fstack-protector -fstack-protector-strong 15CFLAGS_syscall.o += -fno-stack-protector 16 17# When KASAN is enabled, a stack trace is recorded for every alloc/free, which 18# can significantly impact performance. Avoid instrumenting the stack trace 19# collection code to minimize this impact. 20KASAN_SANITIZE_stacktrace.o := n 21 22# It's not safe to invoke KCOV when portions of the kernel environment aren't 23# available or are out-of-sync with HW state. Since `noinstr` doesn't always 24# inhibit KCOV instrumentation, disable it for the entire compilation unit. 25KCOV_INSTRUMENT_entry-common.o := n 26KCOV_INSTRUMENT_idle.o := n 27 28# Object file lists. 29obj-y := debug-monitors.o entry.o irq.o fpsimd.o \ 30 entry-common.o entry-fpsimd.o process.o ptrace.o \ 31 setup.o signal.o sys.o stacktrace.o time.o traps.o \ 32 io.o vdso.o hyp-stub.o psci.o cpu_ops.o \ 33 return_address.o cpuinfo.o cpu_errata.o \ 34 cpufeature.o alternative.o cacheinfo.o \ 35 smp.o smp_spin_table.o topology.o smccc-call.o \ 36 syscall.o proton-pack.o idreg-override.o idle.o \ 37 patching.o 38 39obj-$(CONFIG_COMPAT) += sys32.o signal32.o \ 40 sys_compat.o 41obj-$(CONFIG_COMPAT) += sigreturn32.o 42obj-$(CONFIG_COMPAT_ALIGNMENT_FIXUPS) += compat_alignment.o 43obj-$(CONFIG_KUSER_HELPERS) += kuser32.o 44obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o 45obj-$(CONFIG_MODULES) += module.o module-plts.o 46obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o 47obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_hld.o 48obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o 49obj-$(CONFIG_CPU_PM) += sleep.o suspend.o 50obj-$(CONFIG_CPU_IDLE) += cpuidle.o 51obj-$(CONFIG_JUMP_LABEL) += jump_label.o 52obj-$(CONFIG_KGDB) += kgdb.o 53obj-$(CONFIG_EFI) += efi.o efi-rt-wrapper.o 54obj-$(CONFIG_PCI) += pci.o 55obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o 56obj-$(CONFIG_ACPI) += acpi.o 57obj-$(CONFIG_ACPI_NUMA) += acpi_numa.o 58obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o 59obj-$(CONFIG_PARAVIRT) += paravirt.o 60obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o pi/ 61obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o 62obj-$(CONFIG_ELF_CORE) += elfcore.o 63obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \ 64 cpu-reset.o 65obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o 66obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o 67arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o 68obj-$(CONFIG_CRASH_DUMP) += crash_dump.o 69obj-$(CONFIG_CRASH_CORE) += crash_core.o 70obj-$(CONFIG_ARM_SDE_INTERFACE) += sdei.o 71obj-$(CONFIG_ARM64_PTR_AUTH) += pointer_auth.o 72obj-$(CONFIG_ARM64_MTE) += mte.o 73obj-y += vdso-wrap.o 74obj-$(CONFIG_COMPAT_VDSO) += vdso32-wrap.o 75obj-$(CONFIG_UNWIND_PATCH_PAC_INTO_SCS) += patch-scs.o 76CFLAGS_patch-scs.o += -mbranch-protection=none 77 78# Force dependency (vdso*-wrap.S includes vdso.so through incbin) 79$(obj)/vdso-wrap.o: $(obj)/vdso/vdso.so 80$(obj)/vdso32-wrap.o: $(obj)/vdso32/vdso.so 81 82obj-y += probes/ 83obj-y += head.o 84extra-y += vmlinux.lds 85 86ifeq ($(CONFIG_DEBUG_EFI),y) 87AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\"" 88endif 89 90# for cleaning 91subdir- += vdso vdso32 92