Hi Ben, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.11-rc3 next-20210112] [cannot apply to kvm/linux-next kvmarm/next] [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/Ben-Gardon/Allow-parallel-page-f... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a0d54b4f5b219fb31f0776e9f53aa137e78ae431 config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 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/4ddbcf67981a02819efa9a80934ba0f71... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ben-Gardon/Allow-parallel-page-faults-with-TDP-MMU/20210113-021817 git checkout 4ddbcf67981a02819efa9a80934ba0f71bed9d54 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: 17 | #define queued_spin_unlock queued_spin_unlock | ^~~~~~~~~~~~~~~~~~ arch/mips/include/asm/spinlock.h:22:20: note: in expansion of macro 'queued_spin_unlock' 22 | static inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ In file included from include/asm-generic/qrwlock.h:17, from ./arch/mips/include/generated/asm/qrwlock.h:1, from arch/mips/include/asm/spinlock.h:13, from include/linux/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: include/asm-generic/qspinlock.h:94:29: note: previous definition of 'queued_spin_unlock' was here 94 | static __always_inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 93 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 110 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 138 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 181 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:220:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 220 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 255 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:322:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 322 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:334:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 334 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 348 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:392:6: warning: no previous prototype for 'output_cps_defines' [-Wmissing-prototypes] 392 | void output_cps_defines(void) | ^~~~~~~~~~~~~~~~~~ -- In file included from include/linux/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: 17 | #define queued_spin_unlock queued_spin_unlock | ^~~~~~~~~~~~~~~~~~ arch/mips/include/asm/spinlock.h:22:20: note: in expansion of macro 'queued_spin_unlock' 22 | static inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ In file included from include/asm-generic/qrwlock.h:17, from ./arch/mips/include/generated/asm/qrwlock.h:1, from arch/mips/include/asm/spinlock.h:13, from include/linux/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: include/asm-generic/qspinlock.h:94:29: note: previous definition of 'queued_spin_unlock' was here 94 | static __always_inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 93 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 110 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 138 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 181 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:220:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 220 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 255 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:322:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 322 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:334:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 334 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 348 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:392:6: warning: no previous prototype for 'output_cps_defines' [-Wmissing-prototypes] 392 | void output_cps_defines(void) | ^~~~~~~~~~~~~~~~~~ make[2]: *** [scripts/Makefile.build:117: arch/mips/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1206: prepare0] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- In file included from include/linux/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: 17 | #define queued_spin_unlock queued_spin_unlock | ^~~~~~~~~~~~~~~~~~ arch/mips/include/asm/spinlock.h:22:20: note: in expansion of macro 'queued_spin_unlock' 22 | static inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ In file included from include/asm-generic/qrwlock.h:17, from ./arch/mips/include/generated/asm/qrwlock.h:1, from arch/mips/include/asm/spinlock.h:13, from include/linux/spinlock.h:90, from include/linux/ipc.h:5, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/compat.h:14, from arch/mips/kernel/asm-offsets.c:12: include/asm-generic/qspinlock.h:94:29: note: previous definition of 'queued_spin_unlock' was here 94 | static __always_inline void queued_spin_unlock(struct qspinlock *lock) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 93 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 110 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 138 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 181 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:220:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 220 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 255 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:322:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 322 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:334:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 334 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 348 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:392:6: warning: no previous prototype for 'output_cps_defines' [-Wmissing-prototypes] 392 | void output_cps_defines(void) | ^~~~~~~~~~~~~~~~~~ make[2]: *** [scripts/Makefile.build:117: arch/mips/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1206: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/queued_spin_unlock +17 arch/mips/include/asm/spinlock.h 346e91ee090b07da Will Deacon 2019-02-22 16 346e91ee090b07da Will Deacon 2019-02-22 @17 #define queued_spin_unlock queued_spin_unlock 346e91ee090b07da Will Deacon 2019-02-22 18 /** 346e91ee090b07da Will Deacon 2019-02-22 19 * queued_spin_unlock - release a queued spinlock 346e91ee090b07da Will Deacon 2019-02-22 20 * @lock : Pointer to queued spinlock structure 346e91ee090b07da Will Deacon 2019-02-22 21 */ 346e91ee090b07da Will Deacon 2019-02-22 22 static inline void queued_spin_unlock(struct qspinlock *lock) 346e91ee090b07da Will Deacon 2019-02-22 23 { 346e91ee090b07da Will Deacon 2019-02-22 24 /* This could be optimised with ARCH_HAS_MMIOWB */ 346e91ee090b07da Will Deacon 2019-02-22 25 mmiowb(); 346e91ee090b07da Will Deacon 2019-02-22 26 smp_store_release(&lock->locked, 0); 346e91ee090b07da Will Deacon 2019-02-22 27 } 346e91ee090b07da Will Deacon 2019-02-22 28 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org