1 // SPDX-License-Identifier: GPL-2.0
44 	if (sinfo->si_code != SEGV_PKUERR) {  in segv_handler()
50 	if (sinfo->si_addr != (void *) fault_addr) {  in segv_handler()
68 	pgstart = (void *) ((unsigned long) fault_addr & ~(pgsize - 1));  in segv_handler()
72 	 * reassociate the page with the exec-only pkey since execute  in segv_handler()
77 	 * read-write rights, change the AMR permission bits for the  in segv_handler()
97 static void *protect(void *p)  in protect()  function
105 	base = ((struct region *) p)->base;  in protect()
106 	size = ((struct region *) p)->size;  in protect()
119 	 * Repeatedly try to protect the common region with a permissive  in protect()
147 	base = ((struct region *) p)->base;  in protect_access()
148 	size = ((struct region *) p)->size;  in protect_access()
149 	rights = ((struct region *) p)->rights;  in protect_access()
164 	 * Repeatedly try to protect the common region with a restrictive  in protect_access()
257 		      MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);  in test()
261 	 * Fill the region with no-ops with a branch at the end  in test()
265 	for (i = 0; i < numinsns - 1; i++)  in test()
287 	 * the one from the protect-and-access thread since the other  in test()
294 	/* Setup barrier for protect and protect-and-access threads */  in test()
298 	/* Setup and start protect and protect-and-read threads */  in test()
299 	puts("starting thread pair (protect, protect-and-read)");  in test()
301 	FAIL_IF(pthread_create(&prot_thread, &attr, &protect, &r) != 0);  in test()
306 	/* Setup and start protect and protect-and-write threads */  in test()
307 	puts("starting thread pair (protect, protect-and-write)");  in test()
309 	FAIL_IF(pthread_create(&prot_thread, &attr, &protect, &r) != 0);  in test()
314 	/* Setup and start protect and protect-and-execute threads */  in test()
315 	puts("starting thread pair (protect, protect-and-execute)");  in test()
317 	FAIL_IF(pthread_create(&prot_thread, &attr, &protect, &r) != 0);  in test()