74 static int child(struct shared_info *info)  in child()  argument
82 	ret = wait_parent(&info->child_sync);  in child()
90 		CHILD_FAIL_IF(pkey1 < 0, &info->child_sync);  in child()
96 	CHILD_FAIL_IF(pkey2 < 0, &info->child_sync);  in child()
99 	CHILD_FAIL_IF(pkey3 < 0, &info->child_sync);  in child()
101 	info->amr1 |= 3ul << pkeyshift(pkey1);  in child()
102 	info->amr2 |= 3ul << pkeyshift(pkey2);  in child()
103 	info->amr3 |= info->amr2 | 3ul << pkeyshift(pkey3);  in child()
106 		info->expected_iamr |= 1ul << pkeyshift(pkey1);  in child()
108 		info->expected_iamr &= ~(1ul << pkeyshift(pkey1));  in child()
110 	info->expected_iamr &= ~(1ul << pkeyshift(pkey2) | 1ul << pkeyshift(pkey3));  in child()
112 	info->expected_uamor |= 3ul << pkeyshift(pkey1) |  in child()
114 	info->new_iamr |= 1ul << pkeyshift(pkey1) | 1ul << pkeyshift(pkey2);  in child()
115 	info->new_uamor |= 3ul << pkeyshift(pkey1);  in child()
127 	       user_write, info->amr1, pkey1, pkey2, pkey3);  in child()
129 	mtspr(SPRN_AMR, info->amr1);  in child()
132 	ret = prod_parent(&info->child_sync);  in child()
133 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
135 	ret = wait_parent(&info->child_sync);  in child()
143 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
148 	ret = prod_parent(&info->child_sync);  in child()
149 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
151 	ret = wait_parent(&info->child_sync);  in child()
159 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
165 	ret = prod_parent(&info->child_sync);  in child()
166 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
168 	ret = wait_parent(&info->child_sync);  in child()
176 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
180 	ret = prod_parent(&info->child_sync);  in child()
181 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
186 static int parent(struct shared_info *info, pid_t pid)  in parent()  argument
196 	PARENT_SKIP_IF_UNSUPPORTED(ret, &info->child_sync);  in parent()
197 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
199 	info->amr1 = info->amr2 = info->amr3 = regs[0];  in parent()
200 	info->expected_iamr = info->new_iamr = regs[1];  in parent()
201 	info->expected_uamor = info->new_uamor = regs[2];  in parent()
204 	ret = prod_child(&info->child_sync);  in parent()
205 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
207 	ret = wait_child(&info->child_sync);  in parent()
213 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
218 	PARENT_FAIL_IF(regs[0] != info->amr1, &info->child_sync);  in parent()
219 	PARENT_FAIL_IF(regs[1] != info->expected_iamr, &info->child_sync);  in parent()
220 	PARENT_FAIL_IF(regs[2] != info->expected_uamor, &info->child_sync);  in parent()
223 	ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->amr2, 1);  in parent()
224 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
226 	printf("%-30s AMR: %016lx\n", ptrace_write_running, info->amr2);  in parent()
229 	ret = prod_child(&info->child_sync);  in parent()
230 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
232 	ret = wait_child(&info->child_sync);  in parent()
237 	ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->amr3, 1);  in parent()
238 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
240 	printf("%-30s AMR: %016lx\n", ptrace_write_running, info->amr3);  in parent()
243 	ret = prod_child(&info->child_sync);  in parent()
244 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
246 	ret = wait_child(&info->child_sync);  in parent()
251 	regs[0] = info->amr1;  in parent()
252 	regs[1] = info->new_iamr;  in parent()
254 	PARENT_FAIL_IF(!ret, &info->child_sync);  in parent()
260 	regs[2] = info->new_uamor;  in parent()
262 	PARENT_FAIL_IF(!ret, &info->child_sync);  in parent()
269 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
274 	PARENT_FAIL_IF(regs[0] != info->amr2, &info->child_sync);  in parent()
275 	PARENT_FAIL_IF(regs[1] != info->expected_iamr, &info->child_sync);  in parent()
276 	PARENT_FAIL_IF(regs[2] != info->expected_uamor, &info->child_sync);  in parent()
279 	ret = prod_child(&info->child_sync);  in parent()
280 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
297 	struct shared_info *info;  in ptrace_pkey()  local
302 	shm_id = shmget(IPC_PRIVATE, sizeof(*info), 0777 | IPC_CREAT);  in ptrace_pkey()
303 	info = shmat(shm_id, NULL, 0);  in ptrace_pkey()
305 	ret = init_child_sync(&info->child_sync);  in ptrace_pkey()
314 		ret = child(info);  in ptrace_pkey()
316 		ret = parent(info, pid);  in ptrace_pkey()
318 	shmdt(info);  in ptrace_pkey()
321 		destroy_child_sync(&info->child_sync);  in ptrace_pkey()