41 static void do_test_write_sigsegv(char *mem)  in do_test_write_sigsegv()  argument
43 	char orig = *mem;  in do_test_write_sigsegv()
53 		*mem = orig + 1;  in do_test_write_sigsegv()
58 	ksft_test_result(ret == 1 && *mem == orig,  in do_test_write_sigsegv()
65 	char *mem, *mmap_mem;  in mmap_thp_range()  local
73 	mem = (char *)(((uintptr_t)mmap_mem + thpsize) & ~(thpsize - 1));  in mmap_thp_range()
75 	if (madvise(mem, thpsize, MADV_HUGEPAGE)) {  in mmap_thp_range()
83 	return mem;  in mmap_thp_range()
89 	char *mem;  in test_ptrace_write()  local
94 	mem = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE|MAP_ANON, -1, 0);  in test_ptrace_write()
95 	if (mem == MAP_FAILED) {  in test_ptrace_write()
101 	if (*mem != 0) {  in test_ptrace_write()
110 	lseek(mem_fd, (uintptr_t) mem, SEEK_SET);  in test_ptrace_write()
112 	if (ret != 1 || *mem != data) {  in test_ptrace_write()
117 	do_test_write_sigsegv(mem);  in test_ptrace_write()
119 	munmap(mem, pagesize);  in test_ptrace_write()
124 	char *mem, *mmap_mem;  in test_ptrace_write_thp()  local
131 	mem = mmap_thp_range(PROT_READ, &mmap_mem, &mmap_size);  in test_ptrace_write_thp()
132 	if (mem == MAP_FAILED)  in test_ptrace_write_thp()
140 	lseek(mem_fd, (uintptr_t) mem, SEEK_SET);  in test_ptrace_write_thp()
142 	if (ret != 1 || *mem != data) {  in test_ptrace_write_thp()
148 	if (!pagemap_is_populated(pagemap_fd, mem + thpsize - pagesize)) {  in test_ptrace_write_thp()
153 	do_test_write_sigsegv(mem);  in test_ptrace_write_thp()
160 	char *mem;  in test_page_migration()  local
164 	mem = mmap(NULL, pagesize, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON,  in test_page_migration()
166 	if (mem == MAP_FAILED) {  in test_page_migration()
172 	memset(mem, 1, pagesize);  in test_page_migration()
173 	if (mprotect(mem, pagesize, PROT_READ)) {  in test_page_migration()
179 	if (syscall(__NR_mbind, mem, pagesize, MPOL_LOCAL, NULL, 0x7fful,  in test_page_migration()
185 	do_test_write_sigsegv(mem);  in test_page_migration()
187 	munmap(mem, pagesize);  in test_page_migration()
192 	char *mem, *mmap_mem;  in test_page_migration_thp()  local
197 	mem = mmap_thp_range(PROT_READ|PROT_WRITE, &mmap_mem, &mmap_size);  in test_page_migration_thp()
198 	if (mem == MAP_FAILED)  in test_page_migration_thp()
205 	memset(mem, 1, pagesize);  in test_page_migration_thp()
206 	if (mprotect(mem, thpsize, PROT_READ)) {  in test_page_migration_thp()
212 	if (!pagemap_is_populated(pagemap_fd, mem + thpsize - pagesize)) {  in test_page_migration_thp()
218 	if (syscall(__NR_mbind, mem, thpsize, MPOL_LOCAL, NULL, 0x7fful,  in test_page_migration_thp()
224 	do_test_write_sigsegv(mem);  in test_page_migration_thp()
231 	char *mem, *mmap_mem;  in test_pte_mapped_thp()  local
236 	mem = mmap_thp_range(PROT_READ|PROT_WRITE, &mmap_mem, &mmap_size);  in test_pte_mapped_thp()
237 	if (mem == MAP_FAILED)  in test_pte_mapped_thp()
244 	memset(mem, 1, pagesize);  in test_pte_mapped_thp()
245 	if (mprotect(mem, thpsize, PROT_READ)) {  in test_pte_mapped_thp()
251 	if (!pagemap_is_populated(pagemap_fd, mem + thpsize - pagesize)) {  in test_pte_mapped_thp()
257 	if (mprotect(mem + thpsize - pagesize, pagesize,  in test_pte_mapped_thp()
263 	do_test_write_sigsegv(mem);  in test_pte_mapped_thp()