Hi Mark, I love your patch! Yet something to improve: [auto build test ERROR on 8694e5e6388695195a32bd5746635ca166a8df56] url: https://github.com/0day-ci/linux/commits/Mark-Brown/arm64-sme-Initial-support-for-the-Scalable-Matrix-Extension/20211001-021749 base: 8694e5e6388695195a32bd5746635ca166a8df56 config: arc-randconfig-r043-20210930 (attached as .config) compiler: arc-elf-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/f3b1bea56a1628668cc399d8eaae7ea4cacd8186 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mark-Brown/arm64-sme-Initial-support-for-the-Scalable-Matrix-Extension/20211001-021749 git checkout f3b1bea56a1628668cc399d8eaae7ea4cacd8186 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): kernel/sys.c: In function '__do_sys_prctl': >> kernel/sys.c:2467:25: error: implicit declaration of function 'SME_SET_VL'; did you mean 'SVE_SET_VL'? [-Werror=implicit-function-declaration] 2467 | error = SME_SET_VL(arg2); | ^~~~~~~~~~ | SVE_SET_VL >> kernel/sys.c:2470:25: error: implicit declaration of function 'SME_GET_VL'; did you mean 'SVE_GET_VL'? [-Werror=implicit-function-declaration] 2470 | error = SME_GET_VL(); | ^~~~~~~~~~ | SVE_GET_VL In file included from include/linux/perf_event.h:25, from kernel/sys.c:17: At top level: arch/arc/include/asm/perf_event.h:126:27: warning: 'arc_pmu_cache_map' defined but not used [-Wunused-const-variable=] 126 | static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { | ^~~~~~~~~~~~~~~~~ arch/arc/include/asm/perf_event.h:91:27: warning: 'arc_pmu_ev_hw_map' defined but not used [-Wunused-const-variable=] 91 | static const char * const arc_pmu_ev_hw_map[] = { | ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +2467 kernel/sys.c 2263 2264 SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, 2265 unsigned long, arg4, unsigned long, arg5) 2266 { 2267 struct task_struct *me = current; 2268 unsigned char comm[sizeof(me->comm)]; 2269 long error; 2270 2271 error = security_task_prctl(option, arg2, arg3, arg4, arg5); 2272 if (error != -ENOSYS) 2273 return error; 2274 2275 error = 0; 2276 switch (option) { 2277 case PR_SET_PDEATHSIG: 2278 if (!valid_signal(arg2)) { 2279 error = -EINVAL; 2280 break; 2281 } 2282 me->pdeath_signal = arg2; 2283 break; 2284 case PR_GET_PDEATHSIG: 2285 error = put_user(me->pdeath_signal, (int __user *)arg2); 2286 break; 2287 case PR_GET_DUMPABLE: 2288 error = get_dumpable(me->mm); 2289 break; 2290 case PR_SET_DUMPABLE: 2291 if (arg2 != SUID_DUMP_DISABLE && arg2 != SUID_DUMP_USER) { 2292 error = -EINVAL; 2293 break; 2294 } 2295 set_dumpable(me->mm, arg2); 2296 break; 2297 2298 case PR_SET_UNALIGN: 2299 error = SET_UNALIGN_CTL(me, arg2); 2300 break; 2301 case PR_GET_UNALIGN: 2302 error = GET_UNALIGN_CTL(me, arg2); 2303 break; 2304 case PR_SET_FPEMU: 2305 error = SET_FPEMU_CTL(me, arg2); 2306 break; 2307 case PR_GET_FPEMU: 2308 error = GET_FPEMU_CTL(me, arg2); 2309 break; 2310 case PR_SET_FPEXC: 2311 error = SET_FPEXC_CTL(me, arg2); 2312 break; 2313 case PR_GET_FPEXC: 2314 error = GET_FPEXC_CTL(me, arg2); 2315 break; 2316 case PR_GET_TIMING: 2317 error = PR_TIMING_STATISTICAL; 2318 break; 2319 case PR_SET_TIMING: 2320 if (arg2 != PR_TIMING_STATISTICAL) 2321 error = -EINVAL; 2322 break; 2323 case PR_SET_NAME: 2324 comm[sizeof(me->comm) - 1] = 0; 2325 if (strncpy_from_user(comm, (char __user *)arg2, 2326 sizeof(me->comm) - 1) < 0) 2327 return -EFAULT; 2328 set_task_comm(me, comm); 2329 proc_comm_connector(me); 2330 break; 2331 case PR_GET_NAME: 2332 get_task_comm(comm, me); 2333 if (copy_to_user((char __user *)arg2, comm, sizeof(comm))) 2334 return -EFAULT; 2335 break; 2336 case PR_GET_ENDIAN: 2337 error = GET_ENDIAN(me, arg2); 2338 break; 2339 case PR_SET_ENDIAN: 2340 error = SET_ENDIAN(me, arg2); 2341 break; 2342 case PR_GET_SECCOMP: 2343 error = prctl_get_seccomp(); 2344 break; 2345 case PR_SET_SECCOMP: 2346 error = prctl_set_seccomp(arg2, (char __user *)arg3); 2347 break; 2348 case PR_GET_TSC: 2349 error = GET_TSC_CTL(arg2); 2350 break; 2351 case PR_SET_TSC: 2352 error = SET_TSC_CTL(arg2); 2353 break; 2354 case PR_TASK_PERF_EVENTS_DISABLE: 2355 error = perf_event_task_disable(); 2356 break; 2357 case PR_TASK_PERF_EVENTS_ENABLE: 2358 error = perf_event_task_enable(); 2359 break; 2360 case PR_GET_TIMERSLACK: 2361 if (current->timer_slack_ns > ULONG_MAX) 2362 error = ULONG_MAX; 2363 else 2364 error = current->timer_slack_ns; 2365 break; 2366 case PR_SET_TIMERSLACK: 2367 if (arg2 <= 0) 2368 current->timer_slack_ns = 2369 current->default_timer_slack_ns; 2370 else 2371 current->timer_slack_ns = arg2; 2372 break; 2373 case PR_MCE_KILL: 2374 if (arg4 | arg5) 2375 return -EINVAL; 2376 switch (arg2) { 2377 case PR_MCE_KILL_CLEAR: 2378 if (arg3 != 0) 2379 return -EINVAL; 2380 current->flags &= ~PF_MCE_PROCESS; 2381 break; 2382 case PR_MCE_KILL_SET: 2383 current->flags |= PF_MCE_PROCESS; 2384 if (arg3 == PR_MCE_KILL_EARLY) 2385 current->flags |= PF_MCE_EARLY; 2386 else if (arg3 == PR_MCE_KILL_LATE) 2387 current->flags &= ~PF_MCE_EARLY; 2388 else if (arg3 == PR_MCE_KILL_DEFAULT) 2389 current->flags &= 2390 ~(PF_MCE_EARLY|PF_MCE_PROCESS); 2391 else 2392 return -EINVAL; 2393 break; 2394 default: 2395 return -EINVAL; 2396 } 2397 break; 2398 case PR_MCE_KILL_GET: 2399 if (arg2 | arg3 | arg4 | arg5) 2400 return -EINVAL; 2401 if (current->flags & PF_MCE_PROCESS) 2402 error = (current->flags & PF_MCE_EARLY) ? 2403 PR_MCE_KILL_EARLY : PR_MCE_KILL_LATE; 2404 else 2405 error = PR_MCE_KILL_DEFAULT; 2406 break; 2407 case PR_SET_MM: 2408 error = prctl_set_mm(arg2, arg3, arg4, arg5); 2409 break; 2410 case PR_GET_TID_ADDRESS: 2411 error = prctl_get_tid_address(me, (int __user * __user *)arg2); 2412 break; 2413 case PR_SET_CHILD_SUBREAPER: 2414 me->signal->is_child_subreaper = !!arg2; 2415 if (!arg2) 2416 break; 2417 2418 walk_process_tree(me, propagate_has_child_subreaper, NULL); 2419 break; 2420 case PR_GET_CHILD_SUBREAPER: 2421 error = put_user(me->signal->is_child_subreaper, 2422 (int __user *)arg2); 2423 break; 2424 case PR_SET_NO_NEW_PRIVS: 2425 if (arg2 != 1 || arg3 || arg4 || arg5) 2426 return -EINVAL; 2427 2428 task_set_no_new_privs(current); 2429 break; 2430 case PR_GET_NO_NEW_PRIVS: 2431 if (arg2 || arg3 || arg4 || arg5) 2432 return -EINVAL; 2433 return task_no_new_privs(current) ? 1 : 0; 2434 case PR_GET_THP_DISABLE: 2435 if (arg2 || arg3 || arg4 || arg5) 2436 return -EINVAL; 2437 error = !!test_bit(MMF_DISABLE_THP, &me->mm->flags); 2438 break; 2439 case PR_SET_THP_DISABLE: 2440 if (arg3 || arg4 || arg5) 2441 return -EINVAL; 2442 if (mmap_write_lock_killable(me->mm)) 2443 return -EINTR; 2444 if (arg2) 2445 set_bit(MMF_DISABLE_THP, &me->mm->flags); 2446 else 2447 clear_bit(MMF_DISABLE_THP, &me->mm->flags); 2448 mmap_write_unlock(me->mm); 2449 break; 2450 case PR_MPX_ENABLE_MANAGEMENT: 2451 case PR_MPX_DISABLE_MANAGEMENT: 2452 /* No longer implemented: */ 2453 return -EINVAL; 2454 case PR_SET_FP_MODE: 2455 error = SET_FP_MODE(me, arg2); 2456 break; 2457 case PR_GET_FP_MODE: 2458 error = GET_FP_MODE(me); 2459 break; 2460 case PR_SVE_SET_VL: 2461 error = SVE_SET_VL(arg2); 2462 break; 2463 case PR_SVE_GET_VL: 2464 error = SVE_GET_VL(); 2465 break; 2466 case PR_SME_SET_VL: > 2467 error = SME_SET_VL(arg2); 2468 break; 2469 case PR_SME_GET_VL: > 2470 error = SME_GET_VL(); 2471 break; 2472 case PR_GET_SPECULATION_CTRL: 2473 if (arg3 || arg4 || arg5) 2474 return -EINVAL; 2475 error = arch_prctl_spec_ctrl_get(me, arg2); 2476 break; 2477 case PR_SET_SPECULATION_CTRL: 2478 if (arg4 || arg5) 2479 return -EINVAL; 2480 error = arch_prctl_spec_ctrl_set(me, arg2, arg3); 2481 break; 2482 case PR_PAC_RESET_KEYS: 2483 if (arg3 || arg4 || arg5) 2484 return -EINVAL; 2485 error = PAC_RESET_KEYS(me, arg2); 2486 break; 2487 case PR_PAC_SET_ENABLED_KEYS: 2488 if (arg4 || arg5) 2489 return -EINVAL; 2490 error = PAC_SET_ENABLED_KEYS(me, arg2, arg3); 2491 break; 2492 case PR_PAC_GET_ENABLED_KEYS: 2493 if (arg2 || arg3 || arg4 || arg5) 2494 return -EINVAL; 2495 error = PAC_GET_ENABLED_KEYS(me); 2496 break; 2497 case PR_SET_TAGGED_ADDR_CTRL: 2498 if (arg3 || arg4 || arg5) 2499 return -EINVAL; 2500 error = SET_TAGGED_ADDR_CTRL(arg2); 2501 break; 2502 case PR_GET_TAGGED_ADDR_CTRL: 2503 if (arg2 || arg3 || arg4 || arg5) 2504 return -EINVAL; 2505 error = GET_TAGGED_ADDR_CTRL(); 2506 break; 2507 case PR_SET_IO_FLUSHER: 2508 if (!capable(CAP_SYS_RESOURCE)) 2509 return -EPERM; 2510 2511 if (arg3 || arg4 || arg5) 2512 return -EINVAL; 2513 2514 if (arg2 == 1) 2515 current->flags |= PR_IO_FLUSHER; 2516 else if (!arg2) 2517 current->flags &= ~PR_IO_FLUSHER; 2518 else 2519 return -EINVAL; 2520 break; 2521 case PR_GET_IO_FLUSHER: 2522 if (!capable(CAP_SYS_RESOURCE)) 2523 return -EPERM; 2524 2525 if (arg2 || arg3 || arg4 || arg5) 2526 return -EINVAL; 2527 2528 error = (current->flags & PR_IO_FLUSHER) == PR_IO_FLUSHER; 2529 break; 2530 case PR_SET_SYSCALL_USER_DISPATCH: 2531 error = set_syscall_user_dispatch(arg2, arg3, arg4, 2532 (char __user *) arg5); 2533 break; 2534 #ifdef CONFIG_SCHED_CORE 2535 case PR_SCHED_CORE: 2536 error = sched_core_share_pid(arg2, arg3, arg4, arg5); 2537 break; 2538 #endif 2539 default: 2540 error = -EINVAL; 2541 break; 2542 } 2543 return error; 2544 } 2545 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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