1# SPDX-License-Identifier: GPL-2.0
2# Makefile for vm selftests
3
4include local_config.mk
5
6uname_M := $(shell uname -m 2>/dev/null || echo not)
7MACHINE ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/' -e 's/ppc64.*/ppc64/')
8
9# Without this, failed build products remain, with up-to-date timestamps,
10# thus tricking Make (and you!) into believing that All Is Well, in subsequent
11# make invocations:
12.DELETE_ON_ERROR:
13
14# Avoid accidental wrong builds, due to built-in rules working just a little
15# bit too well--but not quite as well as required for our situation here.
16#
17# In other words, "make userfaultfd" is supposed to fail to build at all,
18# because this Makefile only supports either "make" (all), or "make /full/path".
19# However,  the built-in rules, if not suppressed, will pick up CFLAGS and the
20# initial LDLIBS (but not the target-specific LDLIBS, because those are only
21# set for the full path target!). This causes it to get pretty far into building
22# things despite using incorrect values such as an *occasionally* incomplete
23# LDLIBS.
24MAKEFLAGS += --no-builtin-rules
25
26CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
27LDLIBS = -lrt -lpthread
28TEST_GEN_FILES = compaction_test
29TEST_GEN_FILES += gup_test
30TEST_GEN_FILES += hmm-tests
31TEST_GEN_FILES += hugepage-mmap
32TEST_GEN_FILES += hugepage-shm
33TEST_GEN_FILES += khugepaged
34TEST_GEN_FILES += madv_populate
35TEST_GEN_FILES += map_fixed_noreplace
36TEST_GEN_FILES += map_hugetlb
37TEST_GEN_FILES += map_populate
38TEST_GEN_FILES += memfd_secret
39TEST_GEN_FILES += mlock-random-test
40TEST_GEN_FILES += mlock2-tests
41TEST_GEN_FILES += mremap_dontunmap
42TEST_GEN_FILES += mremap_test
43TEST_GEN_FILES += on-fault-limit
44TEST_GEN_FILES += thuge-gen
45TEST_GEN_FILES += transhuge-stress
46TEST_GEN_FILES += userfaultfd
47TEST_GEN_FILES += split_huge_page_test
48TEST_GEN_FILES += ksm_tests
49
50ifeq ($(MACHINE),x86_64)
51CAN_BUILD_I386 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_32bit_program.c -m32)
52CAN_BUILD_X86_64 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_64bit_program.c)
53CAN_BUILD_WITH_NOPIE := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_program.c -no-pie)
54
55TARGETS := protection_keys
56BINARIES_32 := $(TARGETS:%=%_32)
57BINARIES_64 := $(TARGETS:%=%_64)
58
59ifeq ($(CAN_BUILD_WITH_NOPIE),1)
60CFLAGS += -no-pie
61endif
62
63ifeq ($(CAN_BUILD_I386),1)
64TEST_GEN_FILES += $(BINARIES_32)
65endif
66
67ifeq ($(CAN_BUILD_X86_64),1)
68TEST_GEN_FILES += $(BINARIES_64)
69endif
70else
71
72ifneq (,$(findstring $(MACHINE),ppc64))
73TEST_GEN_FILES += protection_keys
74endif
75
76endif
77
78ifneq (,$(filter $(MACHINE),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64))
79TEST_GEN_FILES += va_128TBswitch
80TEST_GEN_FILES += virtual_address_range
81TEST_GEN_FILES += write_to_hugetlbfs
82endif
83
84TEST_PROGS := run_vmtests.sh
85
86TEST_FILES := test_vmalloc.sh
87
88KSFT_KHDR_INSTALL := 1
89include ../lib.mk
90
91ifeq ($(MACHINE),x86_64)
92BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
93BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
94
95define gen-target-rule-32
96$(1) $(1)_32: $(OUTPUT)/$(1)_32
97.PHONY: $(1) $(1)_32
98endef
99
100define gen-target-rule-64
101$(1) $(1)_64: $(OUTPUT)/$(1)_64
102.PHONY: $(1) $(1)_64
103endef
104
105ifeq ($(CAN_BUILD_I386),1)
106$(BINARIES_32): CFLAGS += -m32 -mxsave
107$(BINARIES_32): LDLIBS += -lrt -ldl -lm
108$(BINARIES_32): $(OUTPUT)/%_32: %.c
109	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
110$(foreach t,$(TARGETS),$(eval $(call gen-target-rule-32,$(t))))
111endif
112
113ifeq ($(CAN_BUILD_X86_64),1)
114$(BINARIES_64): CFLAGS += -m64 -mxsave
115$(BINARIES_64): LDLIBS += -lrt -ldl
116$(BINARIES_64): $(OUTPUT)/%_64: %.c
117	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
118$(foreach t,$(TARGETS),$(eval $(call gen-target-rule-64,$(t))))
119endif
120
121# x86_64 users should be encouraged to install 32-bit libraries
122ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
123all: warn_32bit_failure
124
125warn_32bit_failure:
126	@echo "Warning: you seem to have a broken 32-bit build" 2>&1;		\
127	echo  "environment. This will reduce test coverage of 64-bit" 2>&1;	\
128	echo  "kernels. If you are using a Debian-like distribution," 2>&1;	\
129	echo  "try:"; 2>&1;							\
130	echo  "";								\
131	echo  "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386";	\
132	echo  "";								\
133	echo  "If you are using a Fedora-like distribution, try:";		\
134	echo  "";								\
135	echo  "  yum install glibc-devel.*i686";				\
136	exit 0;
137endif
138endif
139
140$(OUTPUT)/mlock-random-test $(OUTPUT)/memfd_secret: LDLIBS += -lcap
141
142$(OUTPUT)/gup_test: ../../../../mm/gup_test.h
143
144$(OUTPUT)/hmm-tests: local_config.h
145
146# HMM_EXTRA_LIBS may get set in local_config.mk, or it may be left empty.
147$(OUTPUT)/hmm-tests: LDLIBS += $(HMM_EXTRA_LIBS)
148
149$(OUTPUT)/ksm_tests: LDLIBS += -lnuma
150
151local_config.mk local_config.h: check_config.sh
152	/bin/sh ./check_config.sh $(CC)
153
154EXTRA_CLEAN += local_config.mk local_config.h
155
156ifeq ($(HMM_EXTRA_LIBS),)
157all: warn_missing_hugelibs
158
159warn_missing_hugelibs:
160	@echo ; \
161	echo "Warning: missing libhugetlbfs support. Some HMM tests will be skipped." ; \
162	echo
163endif
164