powerpc/mm/pkey_exec_prot.c

69 			sigsafe_err("got a fault for an unexpected pkey\n");
79 			 * Reassociate the exec-only pkey with the region
106 	int pkey, ret, i;
153 	/* Allocate a pkey that restricts execution */
155 	pkey = sys_pkey_alloc(0, rights);
156 	FAIL_IF(pkey < 0);
170 	 * are not set i.e. the pkey permits both read and write
174 	 * implies PROT_READ on GNU systems. The pkey currently
179 	FAIL_IF(sys_pkey_mprotect(insns, pgsize, PROT_EXEC, pkey) != 0);
180 	printf("read from %p, pkey permissions are %s\n", fault_addr,
187 	 * are not set i.e. the pkey permits both read and write
191 	 * PROT_EXEC also restricts writes. The pkey currently
196 	FAIL_IF(sys_pkey_mprotect(insns, pgsize, PROT_EXEC, pkey) != 0);
197 	printf("write to %p, pkey permissions are %s\n", fault_addr,
205 	fault_pkey = pkey;
209 	 * are set i.e. the pkey permits neither read nor write
212 	 * This should generate a pkey fault based on AMR bits only
216 	FAIL_IF(sys_pkey_mprotect(insns, pgsize, PROT_EXEC, pkey) != 0);
217 	pkey_set_rights(pkey, rights);
218 	printf("read from %p, pkey permissions are %s\n", fault_addr,
225 	 * are set i.e. the pkey permits neither read nor write
228 	 * This should generate two faults. First, a pkey fault
233 	FAIL_IF(sys_pkey_mprotect(insns, pgsize, PROT_EXEC, pkey) != 0);
234 	pkey_set_rights(pkey, rights);
235 	printf("write to %p, pkey permissions are %s\n", fault_addr,
240 	/* Free the current pkey */
241 	sys_pkey_free(pkey);
249 		pkey = sys_pkey_alloc(0, rights);
250 		FAIL_IF(pkey < 0);
256 		 * This should generate pkey faults based on IAMR bits which
262 		fault_pkey = pkey;
270 		FAIL_IF(sys_pkey_mprotect(insns, pgsize, PROT_EXEC, pkey) != 0);
271 		printf("execute at %p, pkey permissions are %s\n", fault_addr,
278 		/* Free the current pkey */
279 		sys_pkey_free(pkey);
281 		/* Find next valid combination of pkey rights */