142 	struct user_desc desc = *d;  in install_valid_mode()  local
152 		desc.entry_number = gdt_entry_num;  in install_valid_mode()
154 		ret = syscall(SYS_set_thread_area, &desc);  in install_valid_mode()
157 			      &desc, sizeof(desc));  in install_valid_mode()
169 		uint32_t limit = desc.limit;  in install_valid_mode()
170 		if (desc.limit_in_pages)  in install_valid_mode()
172 		check_valid_segment(desc.entry_number, ldt, ar, limit, true);  in install_valid_mode()
175 		if (desc.seg_32bit) {  in install_valid_mode()
189 static bool install_valid(const struct user_desc *desc, uint32_t ar)  in install_valid()  argument
191 	bool ret = install_valid_mode(desc, ar, false, true);  in install_valid()
193 	if (desc->contents <= 1 && desc->seg_32bit &&  in install_valid()
194 	    !desc->seg_not_present) {  in install_valid()
196 		install_valid_mode(desc, ar, false, false);  in install_valid()
202 static void install_invalid(const struct user_desc *desc, bool oldmode)  in install_invalid()  argument
205 			  desc, sizeof(*desc));  in install_invalid()
209 		check_invalid_segment(desc->entry_number, 1);  in install_invalid()
213 		if (desc->seg_32bit) {  in install_invalid()
232 static void fail_install(struct user_desc *desc)  in fail_install()  argument
234 	if (safe_modify_ldt(0x11, desc, sizeof(*desc)) == 0) {  in fail_install()
246 	struct user_desc desc = {  in do_simple_tests()  local
257 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE | AR_S | AR_P | AR_DB);  in do_simple_tests()
259 	desc.limit_in_pages = 1;  in do_simple_tests()
260 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
265 	desc.entry_number = 2;  in do_simple_tests()
266 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
271 	desc.base_addr = 0xf0000000;  in do_simple_tests()
272 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
275 	desc.useable = 1;  in do_simple_tests()
276 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
279 	desc.seg_not_present = 1;  in do_simple_tests()
280 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
283 	desc.seg_32bit = 0;  in do_simple_tests()
284 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
287 	desc.seg_32bit = 1;  in do_simple_tests()
288 	desc.contents = 0;  in do_simple_tests()
289 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA |  in do_simple_tests()
292 	desc.read_exec_only = 1;  in do_simple_tests()
293 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA |  in do_simple_tests()
296 	desc.contents = 1;  in do_simple_tests()
297 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA_EXPDOWN |  in do_simple_tests()
300 	desc.read_exec_only = 0;  in do_simple_tests()
301 	desc.limit_in_pages = 0;  in do_simple_tests()
302 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA_EXPDOWN |  in do_simple_tests()
305 	desc.contents = 3;  in do_simple_tests()
306 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE_CONF |  in do_simple_tests()
309 	desc.read_exec_only = 1;  in do_simple_tests()
310 	install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE_CONF |  in do_simple_tests()
313 	desc.read_exec_only = 0;  in do_simple_tests()
314 	desc.contents = 2;  in do_simple_tests()
315 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
318 	desc.read_exec_only = 1;  in do_simple_tests()
321 	desc.lm = 1;  in do_simple_tests()
322 	install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE |  in do_simple_tests()
324 	desc.lm = 0;  in do_simple_tests()
327 	bool entry1_okay = install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE |  in do_simple_tests()
335 			check_valid_segment(desc.entry_number, 1,  in do_simple_tests()
337 					    AR_S | AR_DB | AR_AVL, desc.limit,  in do_simple_tests()
358 			desc.entry_number = i;  in do_simple_tests()
359 			desc.limit = i;  in do_simple_tests()
360 			if (safe_modify_ldt(0x11, &desc, sizeof(desc)) != 0) {  in do_simple_tests()
376 	desc.entry_number = 8192;  in do_simple_tests()
377 	fail_install(&desc);  in do_simple_tests()
380 	memset(&desc, 0, sizeof(desc));  in do_simple_tests()
381 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S | AR_P);  in do_simple_tests()
383 	desc.seg_not_present = 1;  in do_simple_tests()
384 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S);  in do_simple_tests()
386 	desc.seg_not_present = 0;  in do_simple_tests()
387 	desc.read_exec_only = 1;  in do_simple_tests()
388 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S | AR_P);  in do_simple_tests()
390 	desc.read_exec_only = 0;  in do_simple_tests()
391 	desc.seg_not_present = 1;  in do_simple_tests()
392 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S);  in do_simple_tests()
394 	desc.read_exec_only = 1;  in do_simple_tests()
395 	desc.limit = 1;  in do_simple_tests()
396 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S);  in do_simple_tests()
398 	desc.limit = 0;  in do_simple_tests()
399 	desc.base_addr = 1;  in do_simple_tests()
400 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S);  in do_simple_tests()
402 	desc.base_addr = 0;  in do_simple_tests()
403 	install_invalid(&desc, false);  in do_simple_tests()
405 	desc.seg_not_present = 0;  in do_simple_tests()
406 	desc.seg_32bit = 1;  in do_simple_tests()
407 	desc.read_exec_only = 0;  in do_simple_tests()
408 	desc.limit = 0xfffff;  in do_simple_tests()
410 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S | AR_P | AR_DB);  in do_simple_tests()
412 	desc.limit_in_pages = 1;  in do_simple_tests()
414 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S | AR_P | AR_DB | AR_G);  in do_simple_tests()
415 	desc.read_exec_only = 1;  in do_simple_tests()
416 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S | AR_P | AR_DB | AR_G);  in do_simple_tests()
417 	desc.contents = 1;  in do_simple_tests()
418 	desc.read_exec_only = 0;  in do_simple_tests()
419 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA_EXPDOWN | AR_S | AR_P | AR_DB | AR_G);  in do_simple_tests()
420 	desc.read_exec_only = 1;  in do_simple_tests()
421 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA_EXPDOWN | AR_S | AR_P | AR_DB | AR_G);  in do_simple_tests()
423 	desc.limit = 0;  in do_simple_tests()
424 	install_invalid(&desc, true);  in do_simple_tests()
451 		const struct user_desc desc = {};  in threadproc()  local
452 		if (syscall(SYS_modify_ldt, 1, &desc, sizeof(desc)) != 0)  in threadproc()
572 		struct user_desc desc = {  in do_multicpu_tests()  local
584 		if (safe_modify_ldt(0x11, &desc, sizeof(desc)) != 0) {  in do_multicpu_tests()
641 	struct user_desc desc = {  in do_exec_test()  local
652 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE | AR_S | AR_P | AR_DB);  in do_exec_test()