tools/testing/selftests/kvm/Makefile.kvm - linux - Git at Google


            
            # SPDX-License-Identifier: GPL-2.0-only

            
            include ../../../build/Build.include


            all:


            LIBKVM += lib/assert.c

            
            LIBKVM += lib/elf.c

            
            LIBKVM += lib/guest_modes.c

            
            LIBKVM += lib/io.c

            
            LIBKVM += lib/kvm_util.c

            
            LIBKVM += lib/lru_gen_util.c

            
            LIBKVM += lib/memstress.c

            
            LIBKVM += lib/guest_sprintf.c

            
            LIBKVM += lib/rbtree.c

            
            LIBKVM += lib/sparsebit.c

            
            LIBKVM += lib/test_util.c

            
            LIBKVM += lib/ucall_common.c

            
            LIBKVM += lib/userfaultfd_util.c


            LIBKVM_STRING += lib/string_override.c


            LIBKVM_x86 += lib/x86/apic.c

            
            LIBKVM_x86 += lib/x86/handlers.S

            
            LIBKVM_x86 += lib/x86/hyperv.c

            
            LIBKVM_x86 += lib/x86/memstress.c

            
            LIBKVM_x86 += lib/x86/pmu.c

            
            LIBKVM_x86 += lib/x86/processor.c

            
            LIBKVM_x86 += lib/x86/sev.c

            
            LIBKVM_x86 += lib/x86/svm.c

            
            LIBKVM_x86 += lib/x86/ucall.c

            
            LIBKVM_x86 += lib/x86/vmx.c


            LIBKVM_arm64 += lib/arm64/gic.c

            
            LIBKVM_arm64 += lib/arm64/gic_v3.c

            
            LIBKVM_arm64 += lib/arm64/gic_v3_its.c

            
            LIBKVM_arm64 += lib/arm64/handlers.S

            
            LIBKVM_arm64 += lib/arm64/processor.c

            
            LIBKVM_arm64 += lib/arm64/spinlock.c

            
            LIBKVM_arm64 += lib/arm64/ucall.c

            
            LIBKVM_arm64 += lib/arm64/vgic.c


            LIBKVM_s390 += lib/s390/diag318_test_handler.c

            
            LIBKVM_s390 += lib/s390/processor.c

            
            LIBKVM_s390 += lib/s390/ucall.c

            
            LIBKVM_s390 += lib/s390/facility.c


            LIBKVM_riscv += lib/riscv/handlers.S

            
            LIBKVM_riscv += lib/riscv/processor.c

            
            LIBKVM_riscv += lib/riscv/ucall.c


            LIBKVM_loongarch += lib/loongarch/processor.c

            
            LIBKVM_loongarch += lib/loongarch/ucall.c

            
            LIBKVM_loongarch += lib/loongarch/exception.S


            # Non-compiled test targets

            
            TEST_PROGS_x86 += x86/nx_huge_pages_test.sh


            # Compiled test targets valid on all architectures with libkvm support

            
            TEST_GEN_PROGS_COMMON = demand_paging_test

            
            TEST_GEN_PROGS_COMMON += dirty_log_test

            
            TEST_GEN_PROGS_COMMON += guest_print_test

            
            TEST_GEN_PROGS_COMMON += irqfd_test

            
            TEST_GEN_PROGS_COMMON += kvm_binary_stats_test

            
            TEST_GEN_PROGS_COMMON += kvm_create_max_vcpus

            
            TEST_GEN_PROGS_COMMON += kvm_page_table_test

            
            TEST_GEN_PROGS_COMMON += set_memory_region_test

            
            TEST_GEN_PROGS_COMMON += memslot_modification_stress_test

            
            TEST_GEN_PROGS_COMMON += memslot_perf_test


            # Compiled test targets

            
            TEST_GEN_PROGS_x86 = $(TEST_GEN_PROGS_COMMON)

            
            TEST_GEN_PROGS_x86 += x86/cpuid_test

            
            TEST_GEN_PROGS_x86 += x86/cr4_cpuid_sync_test

            
            TEST_GEN_PROGS_x86 += x86/dirty_log_page_splitting_test

            
            TEST_GEN_PROGS_x86 += x86/feature_msrs_test

            
            TEST_GEN_PROGS_x86 += x86/evmcs_smm_controls_test

            
            TEST_GEN_PROGS_x86 += x86/exit_on_emulation_failure_test

            
            TEST_GEN_PROGS_x86 += x86/fastops_test

            
            TEST_GEN_PROGS_x86 += x86/fix_hypercall_test

            
            TEST_GEN_PROGS_x86 += x86/hwcr_msr_test

            
            TEST_GEN_PROGS_x86 += x86/hyperv_clock

            
            TEST_GEN_PROGS_x86 += x86/hyperv_cpuid

            
            TEST_GEN_PROGS_x86 += x86/hyperv_evmcs

            
            TEST_GEN_PROGS_x86 += x86/hyperv_extended_hypercalls

            
            TEST_GEN_PROGS_x86 += x86/hyperv_features

            
            TEST_GEN_PROGS_x86 += x86/hyperv_ipi

            
            TEST_GEN_PROGS_x86 += x86/hyperv_svm_test

            
            TEST_GEN_PROGS_x86 += x86/hyperv_tlb_flush

            
            TEST_GEN_PROGS_x86 += x86/kvm_clock_test

            
            TEST_GEN_PROGS_x86 += x86/kvm_pv_test

            
            TEST_GEN_PROGS_x86 += x86/kvm_buslock_test

            
            TEST_GEN_PROGS_x86 += x86/monitor_mwait_test

            
            TEST_GEN_PROGS_x86 += x86/msrs_test

            
            TEST_GEN_PROGS_x86 += x86/nested_close_kvm_test

            
            TEST_GEN_PROGS_x86 += x86/nested_dirty_log_test

            
            TEST_GEN_PROGS_x86 += x86/nested_emulation_test

            
            TEST_GEN_PROGS_x86 += x86/nested_exceptions_test

            
            TEST_GEN_PROGS_x86 += x86/nested_invalid_cr3_test

            
            TEST_GEN_PROGS_x86 += x86/nested_set_state_test

            
            TEST_GEN_PROGS_x86 += x86/nested_tdp_fault_test

            
            TEST_GEN_PROGS_x86 += x86/nested_tsc_adjust_test

            
            TEST_GEN_PROGS_x86 += x86/nested_tsc_scaling_test

            
            TEST_GEN_PROGS_x86 += x86/nested_vmsave_vmload_test

            
            TEST_GEN_PROGS_x86 += x86/platform_info_test

            
            TEST_GEN_PROGS_x86 += x86/pmu_counters_test

            
            TEST_GEN_PROGS_x86 += x86/pmu_event_filter_test

            
            TEST_GEN_PROGS_x86 += x86/private_mem_conversions_test

            
            TEST_GEN_PROGS_x86 += x86/private_mem_kvm_exits_test

            
            TEST_GEN_PROGS_x86 += x86/set_boot_cpu_id

            
            TEST_GEN_PROGS_x86 += x86/set_sregs_test

            
            TEST_GEN_PROGS_x86 += x86/smaller_maxphyaddr_emulation_test

            
            TEST_GEN_PROGS_x86 += x86/smm_test

            
            TEST_GEN_PROGS_x86 += x86/state_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_preemption_timer_test

            
            TEST_GEN_PROGS_x86 += x86/svm_vmcall_test

            
            TEST_GEN_PROGS_x86 += x86/svm_int_ctl_test

            
            TEST_GEN_PROGS_x86 += x86/svm_nested_clear_efer_svme

            
            TEST_GEN_PROGS_x86 += x86/svm_nested_shutdown_test

            
            TEST_GEN_PROGS_x86 += x86/svm_nested_soft_inject_test

            
            TEST_GEN_PROGS_x86 += x86/svm_nested_vmcb12_gpa

            
            TEST_GEN_PROGS_x86 += x86/svm_nested_pat_test

            
            TEST_GEN_PROGS_x86 += x86/svm_lbr_nested_state

            
            TEST_GEN_PROGS_x86 += x86/tsc_scaling_sync

            
            TEST_GEN_PROGS_x86 += x86/sync_regs_test

            
            TEST_GEN_PROGS_x86 += x86/ucna_injection_test

            
            TEST_GEN_PROGS_x86 += x86/userspace_io_test

            
            TEST_GEN_PROGS_x86 += x86/userspace_msr_exit_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_apic_access_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_apicv_updates_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_exception_with_invalid_guest_state

            
            TEST_GEN_PROGS_x86 += x86/vmx_msrs_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_invalid_nested_guest_state

            
            TEST_GEN_PROGS_x86 += x86/vmx_nested_la57_state_test

            
            TEST_GEN_PROGS_x86 += x86/apic_bus_clock_test

            
            TEST_GEN_PROGS_x86 += x86/xapic_ipi_test

            
            TEST_GEN_PROGS_x86 += x86/xapic_state_test

            
            TEST_GEN_PROGS_x86 += x86/xapic_tpr_test

            
            TEST_GEN_PROGS_x86 += x86/xcr0_cpuid_test

            
            TEST_GEN_PROGS_x86 += x86/xss_msr_test

            
            TEST_GEN_PROGS_x86 += x86/debug_regs

            
            TEST_GEN_PROGS_x86 += x86/tsc_msrs_test

            
            TEST_GEN_PROGS_x86 += x86/vmx_pmu_caps_test

            
            TEST_GEN_PROGS_x86 += x86/xen_shinfo_test

            
            TEST_GEN_PROGS_x86 += x86/xen_vmcall_test

            
            TEST_GEN_PROGS_x86 += x86/sev_dbg_test

            
            TEST_GEN_PROGS_x86 += x86/sev_init2_tests

            
            TEST_GEN_PROGS_x86 += x86/sev_migrate_tests

            
            TEST_GEN_PROGS_x86 += x86/sev_smoke_test

            
            TEST_GEN_PROGS_x86 += x86/amx_test

            
            TEST_GEN_PROGS_x86 += x86/max_vcpuid_cap_test

            
            TEST_GEN_PROGS_x86 += x86/triple_fault_event_test

            
            TEST_GEN_PROGS_x86 += x86/recalc_apic_map_test

            
            TEST_GEN_PROGS_x86 += x86/aperfmperf_test

            
            TEST_GEN_PROGS_x86 += access_tracking_perf_test

            
            TEST_GEN_PROGS_x86 += coalesced_io_test

            
            TEST_GEN_PROGS_x86 += dirty_log_perf_test

            
            TEST_GEN_PROGS_x86 += guest_memfd_test

            
            TEST_GEN_PROGS_x86 += hardware_disable_test

            
            TEST_GEN_PROGS_x86 += mmu_stress_test

            
            TEST_GEN_PROGS_x86 += rseq_test

            
            TEST_GEN_PROGS_x86 += steal_time

            
            TEST_GEN_PROGS_x86 += system_counter_offset_test

            
            TEST_GEN_PROGS_x86 += pre_fault_memory_test


            # Compiled outputs used by test targets

            
            TEST_GEN_PROGS_EXTENDED_x86 += x86/nx_huge_pages_test


            TEST_GEN_PROGS_arm64 = $(TEST_GEN_PROGS_COMMON)

            
            TEST_GEN_PROGS_arm64 += arm64/aarch32_id_regs

            
            TEST_GEN_PROGS_arm64 += arm64/arch_timer_edge_cases

            
            TEST_GEN_PROGS_arm64 += arm64/at

            
            TEST_GEN_PROGS_arm64 += arm64/debug-exceptions

            
            TEST_GEN_PROGS_arm64 += arm64/hello_el2

            
            TEST_GEN_PROGS_arm64 += arm64/host_sve

            
            TEST_GEN_PROGS_arm64 += arm64/hypercalls

            
            TEST_GEN_PROGS_arm64 += arm64/external_aborts

            
            TEST_GEN_PROGS_arm64 += arm64/mmio_sign_ext

            
            TEST_GEN_PROGS_arm64 += arm64/page_fault_test

            
            TEST_GEN_PROGS_arm64 += arm64/psci_test

            
            TEST_GEN_PROGS_arm64 += arm64/sea_to_user

            
            TEST_GEN_PROGS_arm64 += arm64/set_id_regs

            
            TEST_GEN_PROGS_arm64 += arm64/smccc_filter

            
            TEST_GEN_PROGS_arm64 += arm64/stage2_block_transitions

            
            TEST_GEN_PROGS_arm64 += arm64/vcpu_width_config

            
            TEST_GEN_PROGS_arm64 += arm64/vgic_init

            
            TEST_GEN_PROGS_arm64 += arm64/vgic_irq

            
            TEST_GEN_PROGS_arm64 += arm64/vgic_lpi_stress

            
            TEST_GEN_PROGS_arm64 += arm64/vgic_v5

            
            TEST_GEN_PROGS_arm64 += arm64/vpmu_counter_access

            
            TEST_GEN_PROGS_arm64 += arm64/no-vgic

            
            TEST_GEN_PROGS_arm64 += arm64/idreg-idst

            
            TEST_GEN_PROGS_arm64 += arm64/kvm-uuid

            
            TEST_GEN_PROGS_arm64 += access_tracking_perf_test

            
            TEST_GEN_PROGS_arm64 += arch_timer

            
            TEST_GEN_PROGS_arm64 += coalesced_io_test

            
            TEST_GEN_PROGS_arm64 += dirty_log_perf_test

            
            TEST_GEN_PROGS_arm64 += get-reg-list

            
            TEST_GEN_PROGS_arm64 += guest_memfd_test

            
            TEST_GEN_PROGS_arm64 += mmu_stress_test

            
            TEST_GEN_PROGS_arm64 += rseq_test

            
            TEST_GEN_PROGS_arm64 += steal_time


            TEST_GEN_PROGS_s390 = $(TEST_GEN_PROGS_COMMON)

            
            TEST_GEN_PROGS_s390 += s390/memop

            
            TEST_GEN_PROGS_s390 += s390/resets

            
            TEST_GEN_PROGS_s390 += s390/sync_regs_test

            
            TEST_GEN_PROGS_s390 += s390/tprot

            
            TEST_GEN_PROGS_s390 += s390/cmma_test

            
            TEST_GEN_PROGS_s390 += s390/debug_test

            
            TEST_GEN_PROGS_s390 += s390/cpumodel_subfuncs_test

            
            TEST_GEN_PROGS_s390 += s390/shared_zeropage_test

            
            TEST_GEN_PROGS_s390 += s390/ucontrol_test

            
            TEST_GEN_PROGS_s390 += s390/user_operexec

            
            TEST_GEN_PROGS_s390 += s390/keyop

            
            TEST_GEN_PROGS_s390 += rseq_test

            
            TEST_GEN_PROGS_s390 += s390/irq_routing

            
            TEST_GEN_PROGS_s390 += mmu_stress_test

            
            TEST_GEN_PROGS_s390 += pre_fault_memory_test


            TEST_GEN_PROGS_riscv = $(TEST_GEN_PROGS_COMMON)

            
            TEST_GEN_PROGS_riscv += riscv/sbi_pmu_test

            
            TEST_GEN_PROGS_riscv += riscv/ebreak_test

            
            TEST_GEN_PROGS_riscv += access_tracking_perf_test

            
            TEST_GEN_PROGS_riscv += arch_timer

            
            TEST_GEN_PROGS_riscv += coalesced_io_test

            
            TEST_GEN_PROGS_riscv += dirty_log_perf_test

            
            TEST_GEN_PROGS_riscv += get-reg-list

            
            TEST_GEN_PROGS_riscv += mmu_stress_test

            
            TEST_GEN_PROGS_riscv += rseq_test

            
            TEST_GEN_PROGS_riscv += steal_time


            TEST_GEN_PROGS_loongarch = loongarch/pmu_test

            
            TEST_GEN_PROGS_loongarch += arch_timer

            
            TEST_GEN_PROGS_loongarch += coalesced_io_test

            
            TEST_GEN_PROGS_loongarch += demand_paging_test

            
            TEST_GEN_PROGS_loongarch += dirty_log_perf_test

            
            TEST_GEN_PROGS_loongarch += dirty_log_test

            
            TEST_GEN_PROGS_loongarch += guest_print_test

            
            TEST_GEN_PROGS_loongarch += hardware_disable_test

            
            TEST_GEN_PROGS_loongarch += kvm_binary_stats_test

            
            TEST_GEN_PROGS_loongarch += kvm_create_max_vcpus

            
            TEST_GEN_PROGS_loongarch += kvm_page_table_test

            
            TEST_GEN_PROGS_loongarch += memslot_modification_stress_test

            
            TEST_GEN_PROGS_loongarch += memslot_perf_test

            
            TEST_GEN_PROGS_loongarch += set_memory_region_test

            
            TEST_GEN_PROGS_loongarch += steal_time


            SPLIT_TESTS += arch_timer

            
            SPLIT_TESTS += get-reg-list


            TEST_PROGS += $(TEST_PROGS_$(ARCH))

            
            TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(ARCH))

            
            TEST_GEN_PROGS_EXTENDED += $(TEST_GEN_PROGS_EXTENDED_$(ARCH))

            
            LIBKVM += $(LIBKVM_$(ARCH))


            OVERRIDE_TARGETS = 1


            # lib.mak defines $(OUTPUT), prepends $(OUTPUT)/ to $(TEST_GEN_PROGS), and most

            
            # importantly defines, i.e. overwrites, $(CC) (unless `make -e` or `make CC=`,

            
            # which causes the environment variable to override the makefile).

            
            include ../lib.mk

            
            include ../cgroup/lib/libcgroup.mk


            INSTALL_HDR_PATH = $(top_srcdir)/usr

            
            LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/

            
            LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include

            
            LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include

            
            CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \

            
            	-Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \

            
            	-U_FORTIFY_SOURCE \

            
            	-fno-builtin-memcmp -fno-builtin-memcpy \

            
            	-fno-builtin-memset -fno-builtin-strnlen \

            
            	-fno-stack-protector -fno-PIE -fno-strict-aliasing \

            
            	-I$(LINUX_TOOL_INCLUDE) -I$(LINUX_TOOL_ARCH_INCLUDE) \

            
            	-I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(ARCH) \

            
            	-I ../rseq -I.. $(EXTRA_CFLAGS) $(KHDR_INCLUDES)

            
            ifeq ($(ARCH),s390)

            
            	CFLAGS += -march=z10

            
            endif

            
            ifeq ($(ARCH),x86)

            
            ifeq ($(shell echo "void foo(void) { }" | $(CC) -march=x86-64-v2 -x c - -c -o /dev/null 2>/dev/null; echo "$$?"),0)

            
            	CFLAGS += -march=x86-64-v2

            
            endif

            
            endif

            
            ifeq ($(ARCH),arm64)

            
            tools_dir := $(top_srcdir)/tools

            
            arm64_tools_dir := $(tools_dir)/arch/arm64/tools/


            ifneq ($(abs_objdir),)

            
            arm64_hdr_outdir := $(abs_objdir)/tools/

            
            else

            
            arm64_hdr_outdir := $(tools_dir)/

            
            endif


            GEN_HDRS := $(arm64_hdr_outdir)arch/arm64/include/generated/

            
            CFLAGS += -I$(GEN_HDRS)


            $(GEN_HDRS): $(wildcard $(arm64_tools_dir)/*)

            
            	$(MAKE) -C $(arm64_tools_dir) OUTPUT=$(arm64_hdr_outdir)

            
            endif


            no-pie-option := $(call try-run, echo 'int main(void) { return 0; }' | \

            
                    $(CC) -Werror $(CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)


            # On s390, build the testcases KVM-enabled

            
            pgste-option = $(call try-run, echo 'int main(void) { return 0; }' | \

            
            	$(CC) -Werror -Wl$(comma)--s390-pgste -x c - -o "$$TMP",-Wl$(comma)--s390-pgste)


            LDLIBS += -ldl

            
            LDFLAGS += -pthread $(no-pie-option) $(pgste-option)


            LIBKVM_C := $(filter %.c,$(LIBKVM))

            
            LIBKVM_S := $(filter %.S,$(LIBKVM))

            
            LIBKVM_C_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_C))

            
            LIBKVM_S_OBJ := $(patsubst %.S, $(OUTPUT)/%.o, $(LIBKVM_S))

            
            LIBKVM_STRING_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_STRING))

            
            LIBKVM_OBJS = $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ) $(LIBKVM_STRING_OBJ) $(LIBCGROUP_O)

            
            SPLIT_TEST_GEN_PROGS := $(patsubst %, $(OUTPUT)/%, $(SPLIT_TESTS))

            
            SPLIT_TEST_GEN_OBJ := $(patsubst %, $(OUTPUT)/$(ARCH)/%.o, $(SPLIT_TESTS))


            TEST_GEN_OBJ = $(patsubst %, %.o, $(TEST_GEN_PROGS))

            
            TEST_GEN_OBJ += $(patsubst %, %.o, $(TEST_GEN_PROGS_EXTENDED))

            
            TEST_DEP_FILES = $(patsubst %.o, %.d, $(TEST_GEN_OBJ))

            
            TEST_DEP_FILES += $(patsubst %.o, %.d, $(LIBKVM_OBJS))

            
            TEST_DEP_FILES += $(patsubst %.o, %.d, $(SPLIT_TEST_GEN_OBJ))

            
            -include $(TEST_DEP_FILES)


            $(shell mkdir -p $(sort $(OUTPUT)/$(ARCH) $(dir $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ))))


            $(filter-out $(SPLIT_TEST_GEN_PROGS), $(TEST_GEN_PROGS)) \

            
            $(TEST_GEN_PROGS_EXTENDED): %: %.o

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $< $(LIBKVM_OBJS) $(LDLIBS) -o $@

            
            $(TEST_GEN_OBJ): $(OUTPUT)/%.o: %.c

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@


            $(SPLIT_TEST_GEN_PROGS): $(OUTPUT)/%: $(OUTPUT)/%.o $(OUTPUT)/$(ARCH)/%.o

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@

            
            $(SPLIT_TEST_GEN_OBJ): $(OUTPUT)/$(ARCH)/%.o: $(ARCH)/%.c

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@


            EXTRA_CLEAN += $(GEN_HDRS) \

            
            	       $(LIBKVM_OBJS) \

            
            	       $(SPLIT_TEST_GEN_OBJ) \

            
            	       $(TEST_DEP_FILES) \

            
            	       $(TEST_GEN_OBJ) \

            
            	       cscope.*


            $(LIBKVM_C_OBJ): $(OUTPUT)/%.o: %.c $(GEN_HDRS)

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@


            $(LIBKVM_S_OBJ): $(OUTPUT)/%.o: %.S $(GEN_HDRS)

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@


            # Compile the string overrides as freestanding to prevent the compiler from

            
            # generating self-referential code, e.g. without "freestanding" the compiler may

            
            # "optimize" memcmp() by invoking memcmp(), thus causing infinite recursion.

            
            $(LIBKVM_STRING_OBJ): $(OUTPUT)/%.o: %.c

            
            	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -ffreestanding $< -o $@


            $(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS))))

            
            $(SPLIT_TEST_GEN_OBJ): $(GEN_HDRS)

            
            $(TEST_GEN_PROGS): $(LIBKVM_OBJS)

            
            $(TEST_GEN_PROGS_EXTENDED): $(LIBKVM_OBJS)

            
            $(TEST_GEN_OBJ): $(GEN_HDRS)


            cscope: include_paths = $(LINUX_TOOL_INCLUDE) $(LINUX_HDR_PATH) include lib ..

            
            cscope:

            
            	$(RM) cscope.*

            
            	(find $(include_paths) -name '*.h' \

            
            		-exec realpath --relative-base=$(PWD) {} \;; \

            
            	find . -name '*.c' \

            
            		-exec realpath --relative-base=$(PWD) {} \;) | sort -u > cscope.files

            
            	cscope -b
	# SPDX-License-Identifier: GPL-2.0-only
	include ../../../build/Build.include

	all:

	LIBKVM += lib/assert.c
	LIBKVM += lib/elf.c
	LIBKVM += lib/guest_modes.c
	LIBKVM += lib/io.c
	LIBKVM += lib/kvm_util.c
	LIBKVM += lib/lru_gen_util.c
	LIBKVM += lib/memstress.c
	LIBKVM += lib/guest_sprintf.c
	LIBKVM += lib/rbtree.c
	LIBKVM += lib/sparsebit.c
	LIBKVM += lib/test_util.c
	LIBKVM += lib/ucall_common.c
	LIBKVM += lib/userfaultfd_util.c

	LIBKVM_STRING += lib/string_override.c

	LIBKVM_x86 += lib/x86/apic.c
	LIBKVM_x86 += lib/x86/handlers.S
	LIBKVM_x86 += lib/x86/hyperv.c
	LIBKVM_x86 += lib/x86/memstress.c
	LIBKVM_x86 += lib/x86/pmu.c
	LIBKVM_x86 += lib/x86/processor.c
	LIBKVM_x86 += lib/x86/sev.c
	LIBKVM_x86 += lib/x86/svm.c
	LIBKVM_x86 += lib/x86/ucall.c
	LIBKVM_x86 += lib/x86/vmx.c

	LIBKVM_arm64 += lib/arm64/gic.c
	LIBKVM_arm64 += lib/arm64/gic_v3.c
	LIBKVM_arm64 += lib/arm64/gic_v3_its.c
	LIBKVM_arm64 += lib/arm64/handlers.S
	LIBKVM_arm64 += lib/arm64/processor.c
	LIBKVM_arm64 += lib/arm64/spinlock.c
	LIBKVM_arm64 += lib/arm64/ucall.c
	LIBKVM_arm64 += lib/arm64/vgic.c

	LIBKVM_s390 += lib/s390/diag318_test_handler.c
	LIBKVM_s390 += lib/s390/processor.c
	LIBKVM_s390 += lib/s390/ucall.c
	LIBKVM_s390 += lib/s390/facility.c

	LIBKVM_riscv += lib/riscv/handlers.S
	LIBKVM_riscv += lib/riscv/processor.c
	LIBKVM_riscv += lib/riscv/ucall.c

	LIBKVM_loongarch += lib/loongarch/processor.c
	LIBKVM_loongarch += lib/loongarch/ucall.c
	LIBKVM_loongarch += lib/loongarch/exception.S

	# Non-compiled test targets
	TEST_PROGS_x86 += x86/nx_huge_pages_test.sh

	# Compiled test targets valid on all architectures with libkvm support
	TEST_GEN_PROGS_COMMON = demand_paging_test
	TEST_GEN_PROGS_COMMON += dirty_log_test
	TEST_GEN_PROGS_COMMON += guest_print_test
	TEST_GEN_PROGS_COMMON += irqfd_test
	TEST_GEN_PROGS_COMMON += kvm_binary_stats_test
	TEST_GEN_PROGS_COMMON += kvm_create_max_vcpus
	TEST_GEN_PROGS_COMMON += kvm_page_table_test
	TEST_GEN_PROGS_COMMON += set_memory_region_test
	TEST_GEN_PROGS_COMMON += memslot_modification_stress_test
	TEST_GEN_PROGS_COMMON += memslot_perf_test

	# Compiled test targets
	TEST_GEN_PROGS_x86 = $(TEST_GEN_PROGS_COMMON)
	TEST_GEN_PROGS_x86 += x86/cpuid_test
	TEST_GEN_PROGS_x86 += x86/cr4_cpuid_sync_test
	TEST_GEN_PROGS_x86 += x86/dirty_log_page_splitting_test
	TEST_GEN_PROGS_x86 += x86/feature_msrs_test
	TEST_GEN_PROGS_x86 += x86/evmcs_smm_controls_test
	TEST_GEN_PROGS_x86 += x86/exit_on_emulation_failure_test
	TEST_GEN_PROGS_x86 += x86/fastops_test
	TEST_GEN_PROGS_x86 += x86/fix_hypercall_test
	TEST_GEN_PROGS_x86 += x86/hwcr_msr_test
	TEST_GEN_PROGS_x86 += x86/hyperv_clock
	TEST_GEN_PROGS_x86 += x86/hyperv_cpuid
	TEST_GEN_PROGS_x86 += x86/hyperv_evmcs
	TEST_GEN_PROGS_x86 += x86/hyperv_extended_hypercalls
	TEST_GEN_PROGS_x86 += x86/hyperv_features
	TEST_GEN_PROGS_x86 += x86/hyperv_ipi
	TEST_GEN_PROGS_x86 += x86/hyperv_svm_test
	TEST_GEN_PROGS_x86 += x86/hyperv_tlb_flush
	TEST_GEN_PROGS_x86 += x86/kvm_clock_test
	TEST_GEN_PROGS_x86 += x86/kvm_pv_test
	TEST_GEN_PROGS_x86 += x86/kvm_buslock_test
	TEST_GEN_PROGS_x86 += x86/monitor_mwait_test
	TEST_GEN_PROGS_x86 += x86/msrs_test
	TEST_GEN_PROGS_x86 += x86/nested_close_kvm_test
	TEST_GEN_PROGS_x86 += x86/nested_dirty_log_test
	TEST_GEN_PROGS_x86 += x86/nested_emulation_test
	TEST_GEN_PROGS_x86 += x86/nested_exceptions_test
	TEST_GEN_PROGS_x86 += x86/nested_invalid_cr3_test
	TEST_GEN_PROGS_x86 += x86/nested_set_state_test
	TEST_GEN_PROGS_x86 += x86/nested_tdp_fault_test
	TEST_GEN_PROGS_x86 += x86/nested_tsc_adjust_test
	TEST_GEN_PROGS_x86 += x86/nested_tsc_scaling_test
	TEST_GEN_PROGS_x86 += x86/nested_vmsave_vmload_test
	TEST_GEN_PROGS_x86 += x86/platform_info_test
	TEST_GEN_PROGS_x86 += x86/pmu_counters_test
	TEST_GEN_PROGS_x86 += x86/pmu_event_filter_test
	TEST_GEN_PROGS_x86 += x86/private_mem_conversions_test
	TEST_GEN_PROGS_x86 += x86/private_mem_kvm_exits_test
	TEST_GEN_PROGS_x86 += x86/set_boot_cpu_id
	TEST_GEN_PROGS_x86 += x86/set_sregs_test
	TEST_GEN_PROGS_x86 += x86/smaller_maxphyaddr_emulation_test
	TEST_GEN_PROGS_x86 += x86/smm_test
	TEST_GEN_PROGS_x86 += x86/state_test
	TEST_GEN_PROGS_x86 += x86/vmx_preemption_timer_test
	TEST_GEN_PROGS_x86 += x86/svm_vmcall_test
	TEST_GEN_PROGS_x86 += x86/svm_int_ctl_test
	TEST_GEN_PROGS_x86 += x86/svm_nested_clear_efer_svme
	TEST_GEN_PROGS_x86 += x86/svm_nested_shutdown_test
	TEST_GEN_PROGS_x86 += x86/svm_nested_soft_inject_test
	TEST_GEN_PROGS_x86 += x86/svm_nested_vmcb12_gpa
	TEST_GEN_PROGS_x86 += x86/svm_nested_pat_test
	TEST_GEN_PROGS_x86 += x86/svm_lbr_nested_state
	TEST_GEN_PROGS_x86 += x86/tsc_scaling_sync
	TEST_GEN_PROGS_x86 += x86/sync_regs_test
	TEST_GEN_PROGS_x86 += x86/ucna_injection_test
	TEST_GEN_PROGS_x86 += x86/userspace_io_test
	TEST_GEN_PROGS_x86 += x86/userspace_msr_exit_test
	TEST_GEN_PROGS_x86 += x86/vmx_apic_access_test
	TEST_GEN_PROGS_x86 += x86/vmx_apicv_updates_test
	TEST_GEN_PROGS_x86 += x86/vmx_exception_with_invalid_guest_state
	TEST_GEN_PROGS_x86 += x86/vmx_msrs_test
	TEST_GEN_PROGS_x86 += x86/vmx_invalid_nested_guest_state
	TEST_GEN_PROGS_x86 += x86/vmx_nested_la57_state_test
	TEST_GEN_PROGS_x86 += x86/apic_bus_clock_test
	TEST_GEN_PROGS_x86 += x86/xapic_ipi_test
	TEST_GEN_PROGS_x86 += x86/xapic_state_test
	TEST_GEN_PROGS_x86 += x86/xapic_tpr_test
	TEST_GEN_PROGS_x86 += x86/xcr0_cpuid_test
	TEST_GEN_PROGS_x86 += x86/xss_msr_test
	TEST_GEN_PROGS_x86 += x86/debug_regs
	TEST_GEN_PROGS_x86 += x86/tsc_msrs_test
	TEST_GEN_PROGS_x86 += x86/vmx_pmu_caps_test
	TEST_GEN_PROGS_x86 += x86/xen_shinfo_test
	TEST_GEN_PROGS_x86 += x86/xen_vmcall_test
	TEST_GEN_PROGS_x86 += x86/sev_dbg_test
	TEST_GEN_PROGS_x86 += x86/sev_init2_tests
	TEST_GEN_PROGS_x86 += x86/sev_migrate_tests
	TEST_GEN_PROGS_x86 += x86/sev_smoke_test
	TEST_GEN_PROGS_x86 += x86/amx_test
	TEST_GEN_PROGS_x86 += x86/max_vcpuid_cap_test
	TEST_GEN_PROGS_x86 += x86/triple_fault_event_test
	TEST_GEN_PROGS_x86 += x86/recalc_apic_map_test
	TEST_GEN_PROGS_x86 += x86/aperfmperf_test
	TEST_GEN_PROGS_x86 += access_tracking_perf_test
	TEST_GEN_PROGS_x86 += coalesced_io_test
	TEST_GEN_PROGS_x86 += dirty_log_perf_test
	TEST_GEN_PROGS_x86 += guest_memfd_test
	TEST_GEN_PROGS_x86 += hardware_disable_test
	TEST_GEN_PROGS_x86 += mmu_stress_test
	TEST_GEN_PROGS_x86 += rseq_test
	TEST_GEN_PROGS_x86 += steal_time
	TEST_GEN_PROGS_x86 += system_counter_offset_test
	TEST_GEN_PROGS_x86 += pre_fault_memory_test

	# Compiled outputs used by test targets
	TEST_GEN_PROGS_EXTENDED_x86 += x86/nx_huge_pages_test

	TEST_GEN_PROGS_arm64 = $(TEST_GEN_PROGS_COMMON)
	TEST_GEN_PROGS_arm64 += arm64/aarch32_id_regs
	TEST_GEN_PROGS_arm64 += arm64/arch_timer_edge_cases
	TEST_GEN_PROGS_arm64 += arm64/at
	TEST_GEN_PROGS_arm64 += arm64/debug-exceptions
	TEST_GEN_PROGS_arm64 += arm64/hello_el2
	TEST_GEN_PROGS_arm64 += arm64/host_sve
	TEST_GEN_PROGS_arm64 += arm64/hypercalls
	TEST_GEN_PROGS_arm64 += arm64/external_aborts
	TEST_GEN_PROGS_arm64 += arm64/mmio_sign_ext
	TEST_GEN_PROGS_arm64 += arm64/page_fault_test
	TEST_GEN_PROGS_arm64 += arm64/psci_test
	TEST_GEN_PROGS_arm64 += arm64/sea_to_user
	TEST_GEN_PROGS_arm64 += arm64/set_id_regs
	TEST_GEN_PROGS_arm64 += arm64/smccc_filter
	TEST_GEN_PROGS_arm64 += arm64/stage2_block_transitions
	TEST_GEN_PROGS_arm64 += arm64/vcpu_width_config
	TEST_GEN_PROGS_arm64 += arm64/vgic_init
	TEST_GEN_PROGS_arm64 += arm64/vgic_irq
	TEST_GEN_PROGS_arm64 += arm64/vgic_lpi_stress
	TEST_GEN_PROGS_arm64 += arm64/vgic_v5
	TEST_GEN_PROGS_arm64 += arm64/vpmu_counter_access
	TEST_GEN_PROGS_arm64 += arm64/no-vgic
	TEST_GEN_PROGS_arm64 += arm64/idreg-idst
	TEST_GEN_PROGS_arm64 += arm64/kvm-uuid
	TEST_GEN_PROGS_arm64 += access_tracking_perf_test
	TEST_GEN_PROGS_arm64 += arch_timer
	TEST_GEN_PROGS_arm64 += coalesced_io_test
	TEST_GEN_PROGS_arm64 += dirty_log_perf_test
	TEST_GEN_PROGS_arm64 += get-reg-list
	TEST_GEN_PROGS_arm64 += guest_memfd_test
	TEST_GEN_PROGS_arm64 += mmu_stress_test
	TEST_GEN_PROGS_arm64 += rseq_test
	TEST_GEN_PROGS_arm64 += steal_time

	TEST_GEN_PROGS_s390 = $(TEST_GEN_PROGS_COMMON)
	TEST_GEN_PROGS_s390 += s390/memop
	TEST_GEN_PROGS_s390 += s390/resets
	TEST_GEN_PROGS_s390 += s390/sync_regs_test
	TEST_GEN_PROGS_s390 += s390/tprot
	TEST_GEN_PROGS_s390 += s390/cmma_test
	TEST_GEN_PROGS_s390 += s390/debug_test
	TEST_GEN_PROGS_s390 += s390/cpumodel_subfuncs_test
	TEST_GEN_PROGS_s390 += s390/shared_zeropage_test
	TEST_GEN_PROGS_s390 += s390/ucontrol_test
	TEST_GEN_PROGS_s390 += s390/user_operexec
	TEST_GEN_PROGS_s390 += s390/keyop
	TEST_GEN_PROGS_s390 += rseq_test
	TEST_GEN_PROGS_s390 += s390/irq_routing
	TEST_GEN_PROGS_s390 += mmu_stress_test
	TEST_GEN_PROGS_s390 += pre_fault_memory_test

	TEST_GEN_PROGS_riscv = $(TEST_GEN_PROGS_COMMON)
	TEST_GEN_PROGS_riscv += riscv/sbi_pmu_test
	TEST_GEN_PROGS_riscv += riscv/ebreak_test
	TEST_GEN_PROGS_riscv += access_tracking_perf_test
	TEST_GEN_PROGS_riscv += arch_timer
	TEST_GEN_PROGS_riscv += coalesced_io_test
	TEST_GEN_PROGS_riscv += dirty_log_perf_test
	TEST_GEN_PROGS_riscv += get-reg-list
	TEST_GEN_PROGS_riscv += mmu_stress_test
	TEST_GEN_PROGS_riscv += rseq_test
	TEST_GEN_PROGS_riscv += steal_time

	TEST_GEN_PROGS_loongarch = loongarch/pmu_test
	TEST_GEN_PROGS_loongarch += arch_timer
	TEST_GEN_PROGS_loongarch += coalesced_io_test
	TEST_GEN_PROGS_loongarch += demand_paging_test
	TEST_GEN_PROGS_loongarch += dirty_log_perf_test
	TEST_GEN_PROGS_loongarch += dirty_log_test
	TEST_GEN_PROGS_loongarch += guest_print_test
	TEST_GEN_PROGS_loongarch += hardware_disable_test
	TEST_GEN_PROGS_loongarch += kvm_binary_stats_test
	TEST_GEN_PROGS_loongarch += kvm_create_max_vcpus
	TEST_GEN_PROGS_loongarch += kvm_page_table_test
	TEST_GEN_PROGS_loongarch += memslot_modification_stress_test
	TEST_GEN_PROGS_loongarch += memslot_perf_test
	TEST_GEN_PROGS_loongarch += set_memory_region_test
	TEST_GEN_PROGS_loongarch += steal_time

	SPLIT_TESTS += arch_timer
	SPLIT_TESTS += get-reg-list

	TEST_PROGS += $(TEST_PROGS_$(ARCH))
	TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(ARCH))
	TEST_GEN_PROGS_EXTENDED += $(TEST_GEN_PROGS_EXTENDED_$(ARCH))
	LIBKVM += $(LIBKVM_$(ARCH))

	OVERRIDE_TARGETS = 1

	# lib.mak defines $(OUTPUT), prepends $(OUTPUT)/ to $(TEST_GEN_PROGS), and most
	# importantly defines, i.e. overwrites, $(CC) (unless `make -e` or `make CC=`,
	# which causes the environment variable to override the makefile).
	include ../lib.mk
	include ../cgroup/lib/libcgroup.mk

	INSTALL_HDR_PATH = $(top_srcdir)/usr
	LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
	LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include
	LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include
	CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
	-Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \
	-U_FORTIFY_SOURCE \
	-fno-builtin-memcmp -fno-builtin-memcpy \
	-fno-builtin-memset -fno-builtin-strnlen \
	-fno-stack-protector -fno-PIE -fno-strict-aliasing \
	-I$(LINUX_TOOL_INCLUDE) -I$(LINUX_TOOL_ARCH_INCLUDE) \
	-I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(ARCH) \
	-I ../rseq -I.. $(EXTRA_CFLAGS) $(KHDR_INCLUDES)
	ifeq ($(ARCH),s390)
	CFLAGS += -march=z10
	endif
	ifeq ($(ARCH),x86)
	ifeq ($(shell echo "void foo(void) { }" \| $(CC) -march=x86-64-v2 -x c - -c -o /dev/null 2>/dev/null; echo "$$?"),0)
	CFLAGS += -march=x86-64-v2
	endif
	endif
	ifeq ($(ARCH),arm64)
	tools_dir := $(top_srcdir)/tools
	arm64_tools_dir := $(tools_dir)/arch/arm64/tools/

	ifneq ($(abs_objdir),)
	arm64_hdr_outdir := $(abs_objdir)/tools/
	else
	arm64_hdr_outdir := $(tools_dir)/
	endif

	GEN_HDRS := $(arm64_hdr_outdir)arch/arm64/include/generated/
	CFLAGS += -I$(GEN_HDRS)

	$(GEN_HDRS): $(wildcard $(arm64_tools_dir)/*)
	$(MAKE) -C $(arm64_tools_dir) OUTPUT=$(arm64_hdr_outdir)
	endif

	no-pie-option := $(call try-run, echo 'int main(void) { return 0; }' \| \
	$(CC) -Werror $(CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)

	# On s390, build the testcases KVM-enabled
	pgste-option = $(call try-run, echo 'int main(void) { return 0; }' \| \
	$(CC) -Werror -Wl$(comma)--s390-pgste -x c - -o "$$TMP",-Wl$(comma)--s390-pgste)

	LDLIBS += -ldl
	LDFLAGS += -pthread $(no-pie-option) $(pgste-option)

	LIBKVM_C := $(filter %.c,$(LIBKVM))
	LIBKVM_S := $(filter %.S,$(LIBKVM))
	LIBKVM_C_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_C))
	LIBKVM_S_OBJ := $(patsubst %.S, $(OUTPUT)/%.o, $(LIBKVM_S))
	LIBKVM_STRING_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_STRING))
	LIBKVM_OBJS = $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ) $(LIBKVM_STRING_OBJ) $(LIBCGROUP_O)
	SPLIT_TEST_GEN_PROGS := $(patsubst %, $(OUTPUT)/%, $(SPLIT_TESTS))
	SPLIT_TEST_GEN_OBJ := $(patsubst %, $(OUTPUT)/$(ARCH)/%.o, $(SPLIT_TESTS))

	TEST_GEN_OBJ = $(patsubst %, %.o, $(TEST_GEN_PROGS))
	TEST_GEN_OBJ += $(patsubst %, %.o, $(TEST_GEN_PROGS_EXTENDED))
	TEST_DEP_FILES = $(patsubst %.o, %.d, $(TEST_GEN_OBJ))
	TEST_DEP_FILES += $(patsubst %.o, %.d, $(LIBKVM_OBJS))
	TEST_DEP_FILES += $(patsubst %.o, %.d, $(SPLIT_TEST_GEN_OBJ))
	-include $(TEST_DEP_FILES)

	$(shell mkdir -p $(sort $(OUTPUT)/$(ARCH) $(dir $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ))))

	$(filter-out $(SPLIT_TEST_GEN_PROGS), $(TEST_GEN_PROGS)) \
	$(TEST_GEN_PROGS_EXTENDED): %: %.o
	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $< $(LIBKVM_OBJS) $(LDLIBS) -o $@
	$(TEST_GEN_OBJ): $(OUTPUT)/%.o: %.c
	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@

	$(SPLIT_TEST_GEN_PROGS): $(OUTPUT)/%: $(OUTPUT)/%.o $(OUTPUT)/$(ARCH)/%.o
	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
	$(SPLIT_TEST_GEN_OBJ): $(OUTPUT)/$(ARCH)/%.o: $(ARCH)/%.c
	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@

	EXTRA_CLEAN += $(GEN_HDRS) \
	$(LIBKVM_OBJS) \
	$(SPLIT_TEST_GEN_OBJ) \
	$(TEST_DEP_FILES) \
	$(TEST_GEN_OBJ) \
	cscope.*

	$(LIBKVM_C_OBJ): $(OUTPUT)/%.o: %.c $(GEN_HDRS)
	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@

	$(LIBKVM_S_OBJ): $(OUTPUT)/%.o: %.S $(GEN_HDRS)
	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@

	# Compile the string overrides as freestanding to prevent the compiler from
	# generating self-referential code, e.g. without "freestanding" the compiler may
	# "optimize" memcmp() by invoking memcmp(), thus causing infinite recursion.
	$(LIBKVM_STRING_OBJ): $(OUTPUT)/%.o: %.c
	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -ffreestanding $< -o $@

	$(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS))))
	$(SPLIT_TEST_GEN_OBJ): $(GEN_HDRS)
	$(TEST_GEN_PROGS): $(LIBKVM_OBJS)
	$(TEST_GEN_PROGS_EXTENDED): $(LIBKVM_OBJS)
	$(TEST_GEN_OBJ): $(GEN_HDRS)

	cscope: include_paths = $(LINUX_TOOL_INCLUDE) $(LINUX_HDR_PATH) include lib ..
	cscope:
	$(RM) cscope.*
	(find $(include_paths) -name '*.h' \
	-exec realpath --relative-base=$(PWD) {} \;; \
	find . -name '*.c' \
	-exec realpath --relative-base=$(PWD) {} \;) \| sort -u > cscope.files
	cscope -b