[kbuild-all] Re: [PATCH 11/12] riscv: extable: add a dedicated uaccess handler

Hi Jisheng, I love your patch! Yet something to improve: [auto build test ERROR on bpf-next/master] [also build test ERROR on bpf/master linus/master v5.16-rc1 next-20211118] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jisheng-Zhang/riscv-switch-to-re... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: riscv-rv32_defconfig (attached as .config) compiler: riscv32-linux-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/011a843af8007bfb9ff01a537e46e2ab6... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jisheng-Zhang/riscv-switch-to-relative-extable-and-other-improvements/20211118-193905 git checkout 011a843af8007bfb9ff01a537e46e2ab6967dd23 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/tty.h:5, from init/do_mounts.c:6: include/asm-generic/termios.h: In function 'user_termio_to_kernel_termios': 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:25:13: note: in expansion of macro 'get_user' 25 | if (get_user(tmp, &termio->c_iflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:29:13: note: in expansion of macro 'get_user' 29 | if (get_user(tmp, &termio->c_oflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:33:13: note: in expansion of macro 'get_user' 33 | if (get_user(tmp, &termio->c_cflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:37:13: note: in expansion of macro 'get_user' 37 | if (get_user(tmp, &termio->c_lflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:41:13: note: in expansion of macro 'get_user' 41 | if (get_user(termios->c_line, &termio->c_line) < 0) | ^~~~~~~~ include/asm-generic/termios.h: In function 'kernel_termios_to_user_termio': arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:59:13: note: in expansion of macro 'put_user' 59 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:60:13: note: in expansion of macro 'put_user' 60 | put_user(termios->c_oflag, &termio->c_oflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:61:13: note: in expansion of macro 'put_user' 61 | put_user(termios->c_cflag, &termio->c_cflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:62:13: note: in expansion of macro 'put_user' 62 | put_user(termios->c_lflag, &termio->c_lflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:63:13: note: in expansion of macro 'put_user' 63 | put_user(termios->c_line, &termio->c_line) < 0 || | ^~~~~~~~ -- In file included from include/linux/uaccess.h:11, from arch/riscv/kernel/signal.c:10: arch/riscv/kernel/signal.c: In function 'restore_fp_state': 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/kernel/signal.c:50:23: note: in expansion of macro '__get_user' 50 | err = __get_user(value, &sc_fpregs->q.reserved[i]); | ^~~~~~~~~~ arch/riscv/kernel/signal.c: In function 'save_fp_state': arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/kernel/signal.c:74:23: note: in expansion of macro '__put_user' 74 | err = __put_user(0, &sc_fpregs->q.reserved[i]); | ^~~~~~~~~~ arch/riscv/kernel/signal.c: In function 'setup_rt_frame': arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/kernel/signal.c:187:16: note: in expansion of macro '__put_user' 187 | err |= __put_user(0, &frame->uc.uc_flags); | ^~~~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/kernel/signal.c:188:16: note: in expansion of macro '__put_user' 188 | err |= __put_user(NULL, &frame->uc.uc_link); | ^~~~~~~~~~ arch/riscv/kernel/signal.c: At top level: arch/riscv/kernel/signal.c:309:27: warning: no previous prototype for 'do_notify_resume' [-Wmissing-prototypes] 309 | asmlinkage __visible void do_notify_resume(struct pt_regs *regs, | ^~~~~~~~~~~~~~~~ -- In file included from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from kernel/fork.c:23: include/asm-generic/termios.h: In function 'user_termio_to_kernel_termios': 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:25:13: note: in expansion of macro 'get_user' 25 | if (get_user(tmp, &termio->c_iflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:29:13: note: in expansion of macro 'get_user' 29 | if (get_user(tmp, &termio->c_oflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:33:13: note: in expansion of macro 'get_user' 33 | if (get_user(tmp, &termio->c_cflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:37:13: note: in expansion of macro 'get_user' 37 | if (get_user(tmp, &termio->c_lflag) < 0) | ^~~~~~~~ 113 | if (err) \ | ^~ arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8' 133 | __get_user_8((x), __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck' 168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user' 196 | __get_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:41:13: note: in expansion of macro 'get_user' 41 | if (get_user(termios->c_line, &termio->c_line) < 0) | ^~~~~~~~ include/asm-generic/termios.h: In function 'kernel_termios_to_user_termio': arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:59:13: note: in expansion of macro 'put_user' 59 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:60:13: note: in expansion of macro 'put_user' 60 | put_user(termios->c_oflag, &termio->c_oflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:61:13: note: in expansion of macro 'put_user' 61 | put_user(termios->c_cflag, &termio->c_cflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:62:13: note: in expansion of macro 'put_user' 62 | put_user(termios->c_lflag, &termio->c_lflag) < 0 || | ^~~~~~~~ arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable] 220 | uintptr_t __tmp; \ | ^~~~~ arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8' 249 | __put_user_8((x), __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck' 286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \ | ^~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user' 313 | __put_user((x), __p) : \ | ^~~~~~~~~~ include/asm-generic/termios.h:63:13: note: in expansion of macro 'put_user' 63 | put_user(termios->c_line, &termio->c_line) < 0 || | ^~~~~~~~ kernel/fork.c: At top level: kernel/fork.c:161:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes] 161 | void __weak arch_release_task_struct(struct task_struct *tsk) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/fork.c:763:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes] 763 | void __init __weak arch_task_cache_init(void) { } | ^~~~~~~~~~~~~~~~~~~~ In file included from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from kernel/fork.c:23: .. vim +113 arch/riscv/include/asm/uaccess.h 94 95 #ifdef CONFIG_64BIT 96 #define __get_user_8(x, ptr, err) \ 97 __get_user_asm("ld", x, ptr, err) 98 #else /* !CONFIG_64BIT */ 99 #define __get_user_8(x, ptr, err) \ 100 do { \ 101 u32 __user *__ptr = (u32 __user *)(ptr); \ 102 u32 __lo, __hi; \ 103 __asm__ __volatile__ ( \ 104 "1:\n" \ 105 " lw %1, %3\n" \ 106 "2:\n" \ 107 " lw %2, %4\n" \ 108 "3:\n" \ 109 _ASM_EXTABLE_UACCESS_ERR_ZERO(1b, 3b, %0, %1) \ 110 _ASM_EXTABLE_UACCESS_ERR_ZERO(2b, 3b, %0, %1) \ 111 : "+r" (err), "=&r" (__lo), "=r" (__hi) \ 112 : "m" (__ptr[__LSW]), "m" (__ptr[__MSW])) \ 114 __hi = 0; \ 115 (x) = (__typeof__(x))((__typeof__((x)-(x)))( \ 116 (((u64)__hi << 32) | __lo))); \ 117 } while (0) 118 #endif /* CONFIG_64BIT */ 119 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org