116 static bool install_valid_mode(const struct user_desc *desc, uint32_t ar,  in install_valid_mode()  argument
120 			  desc, sizeof(*desc));  in install_valid_mode()
124 		uint32_t limit = desc->limit;  in install_valid_mode()
125 		if (desc->limit_in_pages)  in install_valid_mode()
127 		check_valid_segment(desc->entry_number, 1, ar, limit, true);  in install_valid_mode()
133 		if (desc->seg_32bit) {  in install_valid_mode()
145 static bool install_valid(const struct user_desc *desc, uint32_t ar)  in install_valid()  argument
147 	return install_valid_mode(desc, ar, false);  in install_valid()
150 static void install_invalid(const struct user_desc *desc, bool oldmode)  in install_invalid()  argument
153 			  desc, sizeof(*desc));  in install_invalid()
157 		check_invalid_segment(desc->entry_number, 1);  in install_invalid()
161 		if (desc->seg_32bit) {  in install_invalid()
180 static void fail_install(struct user_desc *desc)  in fail_install()  argument
182 	if (safe_modify_ldt(0x11, desc, sizeof(*desc)) == 0) {  in fail_install()
194 	struct user_desc desc = {  in do_simple_tests()  local
205 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE | AR_S | AR_P | AR_DB);  in do_simple_tests()
207 	desc.limit_in_pages = 1;  in do_simple_tests()
208 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
213 	desc.entry_number = 2;  in do_simple_tests()
214 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
219 	desc.base_addr = 0xf0000000;  in do_simple_tests()
220 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
223 	desc.useable = 1;  in do_simple_tests()
224 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
227 	desc.seg_not_present = 1;  in do_simple_tests()
228 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
231 	desc.seg_32bit = 0;  in do_simple_tests()
232 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
235 	desc.seg_32bit = 1;  in do_simple_tests()
236 	desc.contents = 0;  in do_simple_tests()
237 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA |  in do_simple_tests()
240 	desc.read_exec_only = 1;  in do_simple_tests()
241 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA |  in do_simple_tests()
244 	desc.contents = 1;  in do_simple_tests()
245 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA_EXPDOWN |  in do_simple_tests()
248 	desc.read_exec_only = 0;  in do_simple_tests()
249 	desc.limit_in_pages = 0;  in do_simple_tests()
250 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA_EXPDOWN |  in do_simple_tests()
253 	desc.contents = 3;  in do_simple_tests()
254 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE_CONF |  in do_simple_tests()
257 	desc.read_exec_only = 1;  in do_simple_tests()
258 	install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE_CONF |  in do_simple_tests()
261 	desc.read_exec_only = 0;  in do_simple_tests()
262 	desc.contents = 2;  in do_simple_tests()
263 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE |  in do_simple_tests()
266 	desc.read_exec_only = 1;  in do_simple_tests()
269 	desc.lm = 1;  in do_simple_tests()
270 	install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE |  in do_simple_tests()
272 	desc.lm = 0;  in do_simple_tests()
275 	bool entry1_okay = install_valid(&desc, AR_DPL3 | AR_TYPE_XOCODE |  in do_simple_tests()
283 			check_valid_segment(desc.entry_number, 1,  in do_simple_tests()
285 					    AR_S | AR_DB | AR_AVL, desc.limit,  in do_simple_tests()
306 			desc.entry_number = i;  in do_simple_tests()
307 			desc.limit = i;  in do_simple_tests()
308 			if (safe_modify_ldt(0x11, &desc, sizeof(desc)) != 0) {  in do_simple_tests()
324 	desc.entry_number = 8192;  in do_simple_tests()
325 	fail_install(&desc);  in do_simple_tests()
328 	memset(&desc, 0, sizeof(desc));  in do_simple_tests()
329 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S | AR_P);  in do_simple_tests()
331 	desc.seg_not_present = 1;  in do_simple_tests()
332 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S);  in do_simple_tests()
334 	desc.seg_not_present = 0;  in do_simple_tests()
335 	desc.read_exec_only = 1;  in do_simple_tests()
336 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S | AR_P);  in do_simple_tests()
338 	desc.read_exec_only = 0;  in do_simple_tests()
339 	desc.seg_not_present = 1;  in do_simple_tests()
340 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S);  in do_simple_tests()
342 	desc.read_exec_only = 1;  in do_simple_tests()
343 	desc.limit = 1;  in do_simple_tests()
344 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S);  in do_simple_tests()
346 	desc.limit = 0;  in do_simple_tests()
347 	desc.base_addr = 1;  in do_simple_tests()
348 	install_valid(&desc, AR_DPL3 | AR_TYPE_RODATA | AR_S);  in do_simple_tests()
350 	desc.base_addr = 0;  in do_simple_tests()
351 	install_invalid(&desc, false);  in do_simple_tests()
353 	desc.seg_not_present = 0;  in do_simple_tests()
354 	desc.read_exec_only = 0;  in do_simple_tests()
355 	desc.seg_32bit = 1;  in do_simple_tests()
356 	install_valid(&desc, AR_DPL3 | AR_TYPE_RWDATA | AR_S | AR_P | AR_DB);  in do_simple_tests()
357 	install_invalid(&desc, true);  in do_simple_tests()
384 		const struct user_desc desc = {};  in threadproc()  local
385 		if (syscall(SYS_modify_ldt, 1, &desc, sizeof(desc)) != 0)  in threadproc()
459 		struct user_desc desc = {  in do_multicpu_tests()  local
471 		if (safe_modify_ldt(0x11, &desc, sizeof(desc)) != 0) {  in do_multicpu_tests()
531 	struct user_desc desc = {  in do_exec_test()  local
542 	install_valid(&desc, AR_DPL3 | AR_TYPE_XRCODE | AR_S | AR_P | AR_DB);  in do_exec_test()