69 static int child(struct shared_info *info)  in child()  argument
77 	ret = wait_parent(&info->child_sync);  in child()
85 		CHILD_FAIL_IF(pkey1 < 0, &info->child_sync);  in child()
91 	CHILD_FAIL_IF(pkey2 < 0, &info->child_sync);  in child()
94 	CHILD_FAIL_IF(pkey3 < 0, &info->child_sync);  in child()
96 	info->amr1 |= 3ul << pkeyshift(pkey1);  in child()
97 	info->amr2 |= 3ul << pkeyshift(pkey2);  in child()
102 	info->invalid_amr = info->amr2 | (~0x0UL & ~info->expected_uamor);  in child()
108 		info->expected_iamr |= 1ul << pkeyshift(pkey1);  in child()
110 		info->expected_iamr &= ~(1ul << pkeyshift(pkey1));  in child()
115 	info->expected_iamr &= ~(1ul << pkeyshift(pkey2));  in child()
116 	info->expected_iamr &= ~(1ul << pkeyshift(pkey3));  in child()
122 	info->invalid_iamr = info->expected_iamr | (1ul << pkeyshift(pkey1) | 1ul << pkeyshift(pkey2));  in child()
123 	info->invalid_uamor = info->expected_uamor & ~(0x3ul << pkeyshift(pkey1));  in child()
126 	       user_write, info->amr1, pkey1, pkey2, pkey3);  in child()
128 	set_amr(info->amr1);  in child()
131 	ret = prod_parent(&info->child_sync);  in child()
132 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
134 	ret = wait_parent(&info->child_sync);  in child()
142 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
147 	ret = prod_parent(&info->child_sync);  in child()
148 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
150 	ret = wait_parent(&info->child_sync);  in child()
158 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
164 	ret = prod_parent(&info->child_sync);  in child()
165 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
167 	ret = wait_parent(&info->child_sync);  in child()
175 	CHILD_FAIL_IF(reg != info->amr2, &info->child_sync);  in child()
179 	ret = prod_parent(&info->child_sync);  in child()
180 	CHILD_FAIL_IF(ret, &info->child_sync);  in child()
185 static int parent(struct shared_info *info, pid_t pid)  in parent()  argument
195 	PARENT_SKIP_IF_UNSUPPORTED(ret, &info->child_sync, "PKEYs not supported");  in parent()
196 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
198 	info->amr1 = info->amr2 = regs[0];  in parent()
199 	info->expected_iamr = regs[1];  in parent()
200 	info->expected_uamor = regs[2];  in parent()
203 	ret = prod_child(&info->child_sync);  in parent()
204 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
206 	ret = wait_child(&info->child_sync);  in parent()
212 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
217 	PARENT_FAIL_IF(regs[0] != info->amr1, &info->child_sync);  in parent()
218 	PARENT_FAIL_IF(regs[1] != info->expected_iamr, &info->child_sync);  in parent()
219 	PARENT_FAIL_IF(regs[2] != info->expected_uamor, &info->child_sync);  in parent()
222 	ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->amr2, 1);  in parent()
223 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
225 	printf("%-30s AMR: %016lx\n", ptrace_write_running, info->amr2);  in parent()
228 	ret = prod_child(&info->child_sync);  in parent()
229 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
231 	ret = wait_child(&info->child_sync);  in parent()
236 	ret = ptrace_write_regs(pid, NT_PPC_PKEY, &info->invalid_amr, 1);  in parent()
237 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
239 	printf("%-30s AMR: %016lx\n", ptrace_write_running, info->invalid_amr);  in parent()
242 	ret = prod_child(&info->child_sync);  in parent()
243 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
245 	ret = wait_child(&info->child_sync);  in parent()
250 	regs[0] = info->amr1;  in parent()
251 	regs[1] = info->invalid_iamr;  in parent()
253 	PARENT_FAIL_IF(!ret, &info->child_sync);  in parent()
259 	regs[2] = info->invalid_uamor;  in parent()
261 	PARENT_FAIL_IF(!ret, &info->child_sync);  in parent()
268 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
273 	PARENT_FAIL_IF(regs[0] != info->amr2, &info->child_sync);  in parent()
274 	PARENT_FAIL_IF(regs[1] != info->expected_iamr, &info->child_sync);  in parent()
275 	PARENT_FAIL_IF(regs[2] != info->expected_uamor, &info->child_sync);  in parent()
278 	ret = prod_child(&info->child_sync);  in parent()
279 	PARENT_FAIL_IF(ret, &info->child_sync);  in parent()
296 	struct shared_info *info;  in ptrace_pkey()  local
301 	shm_id = shmget(IPC_PRIVATE, sizeof(*info), 0777 | IPC_CREAT);  in ptrace_pkey()
302 	info = shmat(shm_id, NULL, 0);  in ptrace_pkey()
304 	ret = init_child_sync(&info->child_sync);  in ptrace_pkey()
313 		ret = child(info);  in ptrace_pkey()
315 		ret = parent(info, pid);  in ptrace_pkey()
317 	shmdt(info);  in ptrace_pkey()
320 		destroy_child_sync(&info->child_sync);  in ptrace_pkey()