Hi Huacai, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v6.0-rc2 next-20220822] [cannot apply to soc/for-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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Huacai-Chen/LoongArch-Use-TLB-for-ioremap/20220823-110829 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 072e51356cd5a4a1c12c1020bc054c99b98333df config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20220823/202208231528.Lgm9hRwt-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/80f55a8feb23743d963d113c803bf54b1287244d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Huacai-Chen/LoongArch-Use-TLB-for-ioremap/20220823-110829 git checkout 80f55a8feb23743d963d113c803bf54b1287244d # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash arch/loongarch/ drivers/net/ fs// kernel/ lib// mm// If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/linux/pgtable.h:14, from include/asm-generic/io.h:1048, from arch/loongarch/include/asm/io.h:94, from arch/loongarch/include/asm/pgtable.h:62, from arch/loongarch/include/asm/uaccess.h:17, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/ptrace.h:7, from arch/loongarch/kernel/cpu-probe.c:9: include/asm-generic/pgtable_uffd.h:10:40: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 10 | static __always_inline int pmd_uffd_wp(pmd_t pmd) | ^~~~~ | pud_t include/asm-generic/pgtable_uffd.h:20:24: error: unknown type name 'pmd_t' 20 | static __always_inline pmd_t pmd_mkuffd_wp(pmd_t pmd) | ^~~~~ include/asm-generic/pgtable_uffd.h:20:44: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 20 | static __always_inline pmd_t pmd_mkuffd_wp(pmd_t pmd) | ^~~~~ | pud_t include/asm-generic/pgtable_uffd.h:30:24: error: unknown type name 'pmd_t' 30 | static __always_inline pmd_t pmd_clear_uffd_wp(pmd_t pmd) | ^~~~~ include/asm-generic/pgtable_uffd.h:30:48: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 30 | static __always_inline pmd_t pmd_clear_uffd_wp(pmd_t pmd) | ^~~~~ | pud_t include/asm-generic/pgtable_uffd.h:50:15: error: unknown type name 'pmd_t' 50 | static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd) | ^~~~~ include/asm-generic/pgtable_uffd.h:50:39: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 50 | static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd) | ^~~~~ | pud_t include/asm-generic/pgtable_uffd.h:55:35: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 55 | static inline int pmd_swp_uffd_wp(pmd_t pmd) | ^~~~~ | pud_t include/asm-generic/pgtable_uffd.h:60:15: error: unknown type name 'pmd_t' 60 | static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd) | ^~~~~ include/asm-generic/pgtable_uffd.h:60:43: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 60 | static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd) | ^~~~~ | pud_t In file included from include/linux/pgtable.h:15: include/linux/page_table_check.h:132:67: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 132 | unsigned long addr, pmd_t pmd) | ^~~~~ | pud_t include/linux/page_table_check.h:148:65: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 148 | unsigned long addr, pmd_t *pmdp, | ^~~~~ | pud_t include/linux/page_table_check.h:149:45: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 149 | pmd_t pmd) | ^~~~~ | pud_t include/linux/page_table_check.h:161:53: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 161 | pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:90:40: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 90 | static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address) | ^~~~~ | pud_t include/linux/pgtable.h:109:15: error: unknown type name 'pmd_t' 109 | static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) | ^~~~~ include/linux/pgtable.h: In function 'pmd_offset': include/linux/pgtable.h:111:16: error: implicit declaration of function 'pud_pgtable'; did you mean 'pmd_pgtable'? [-Werror=implicit-function-declaration] 111 | return pud_pgtable(*pud) + pmd_index(address); | ^~~~~~~~~~~ | pmd_pgtable >> include/linux/pgtable.h:111:34: warning: returning 'long unsigned int' from a function with return type 'int *' makes pointer from integer without a cast [-Wint-conversion] 111 | return pud_pgtable(*pud) + pmd_index(address); | ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ include/linux/pgtable.h: At top level: include/linux/pgtable.h:151:15: error: unknown type name 'pmd_t' 151 | static inline pmd_t *pmd_off(struct mm_struct *mm, unsigned long va) | ^~~~~ include/linux/pgtable.h:156:15: error: unknown type name 'pmd_t' 156 | static inline pmd_t *pmd_off_k(unsigned long va) | ^~~~~ include/linux/pgtable.h: In function 'virt_to_kpte': include/linux/pgtable.h:163:9: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 163 | pmd_t *pmd = pmd_off_k(vaddr); | ^~~~~ | pud_t include/linux/pgtable.h:165:16: error: implicit declaration of function 'pmd_none'; did you mean 'p4d_none'? [-Werror=implicit-function-declaration] 165 | return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); | ^~~~~~~~ | p4d_none include/linux/pgtable.h:94:27: error: implicit declaration of function 'pte_offset_kernel' [-Werror=implicit-function-declaration] 94 | #define pte_offset_kernel pte_offset_kernel | ^~~~~~~~~~~~~~~~~ include/linux/pgtable.h:165:40: note: in expansion of macro 'pte_offset_kernel' 165 | return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); | ^~~~~~~~~~~~~~~~~ >> include/linux/pgtable.h:165:38: warning: pointer/integer type mismatch in conditional expression 165 | return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); | ^ include/linux/pgtable.h: At top level: include/linux/pgtable.h:177:57: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 177 | unsigned long address, pmd_t *pmdp, | ^~~~~ | pud_t include/linux/pgtable.h:178:34: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 178 | pmd_t entry, int dirty); | ^~~~~ | pud_t include/linux/pgtable.h: In function 'ptep_test_and_clear_young': include/linux/pgtable.h:207:14: error: implicit declaration of function 'pte_young' [-Werror=implicit-function-declaration] 207 | if (!pte_young(pte)) | ^~~~~~~~~ include/linux/pgtable.h:210:17: error: implicit declaration of function 'set_pte_at' [-Werror=implicit-function-declaration] 210 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~~ include/linux/pgtable.h:210:55: error: implicit declaration of function 'pte_mkold' [-Werror=implicit-function-declaration] 210 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~ include/linux/pgtable.h: At top level: include/linux/pgtable.h:219:45: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 219 | pmd_t *pmdp) | ^~~~~ | pud_t include/linux/pgtable.h:248:58: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 248 | unsigned long address, pmd_t *pmdp); | ^~~~~ | pud_t include/linux/pgtable.h: In function 'ptep_get_and_clear': include/linux/pgtable.h:269:9: error: implicit declaration of function 'pte_clear'; did you mean 'p4d_clear'? [-Werror=implicit-function-declaration] 269 | pte_clear(mm, address, ptep); | ^~~~~~~~~ | p4d_clear include/linux/pgtable.h: At top level: include/linux/pgtable.h:345:15: error: unknown type name 'pmd_t' 345 | static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, | ^~~~~ include/linux/pgtable.h:347:45: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 347 | pmd_t *pmdp) | ^~~~~ | pud_t include/linux/pgtable.h: In function 'pudp_huge_get_and_clear': include/linux/pgtable.h:364:9: error: implicit declaration of function 'pud_clear'; did you mean 'p4d_clear'? [-Werror=implicit-function-declaration] 364 | pud_clear(pudp); | ^~~~~~~~~ | p4d_clear include/linux/pgtable.h: At top level: include/linux/pgtable.h:374:15: error: unknown type name 'pmd_t' 374 | static inline pmd_t pmdp_huge_get_and_clear_full(struct vm_area_struct *vma, | ^~~~~ include/linux/pgtable.h:375:68: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 375 | unsigned long address, pmd_t *pmdp, | ^~~~~ | pud_t include/linux/pgtable.h:442:8: error: unknown type name 'pmd_t' 442 | extern pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, | ^~~~~ include/linux/pgtable.h:444:31: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 444 | pmd_t *pmdp); | ^~~~~ | pud_t include/linux/pgtable.h: In function 'ptep_set_wrprotect': include/linux/pgtable.h:455:39: error: implicit declaration of function 'pte_wrprotect'; did you mean 'ptep_set_wrprotect'? [-Werror=implicit-function-declaration] 455 | set_pte_at(mm, address, ptep, pte_wrprotect(old_pte)); | ^~~~~~~~~~~~~ | ptep_set_wrprotect include/linux/pgtable.h: At top level: include/linux/pgtable.h:502:62: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 502 | unsigned long address, pmd_t *pmdp) | ^~~~~ | pud_t include/linux/pgtable.h:535:8: error: unknown type name 'pmd_t' 535 | extern pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, | ^~~~~ include/linux/pgtable.h:536:57: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 536 | unsigned long address, pmd_t *pmdp); | ^~~~~ | pud_t include/linux/pgtable.h:550:62: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 550 | extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, | ^~~~~ | pud_t include/linux/pgtable.h:555:68: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 555 | extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); | ^~~~~ | pud_t include/linux/pgtable.h:564:15: error: unknown type name 'pmd_t' 564 | static inline pmd_t generic_pmdp_establish(struct vm_area_struct *vma, | ^~~~~ include/linux/pgtable.h:565:40: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 565 | unsigned long address, pmd_t *pmdp, pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:565:53: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 565 | unsigned long address, pmd_t *pmdp, pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:574:8: error: unknown type name 'pmd_t' -- | p4d_none In file included from include/linux/init.h:5, from arch/loongarch/kernel/cpu-probe.c:7: include/linux/pgtable.h:866:22: error: implicit declaration of function 'pud_bad'; did you mean 'p4d_bad'? [-Werror=implicit-function-declaration] 866 | if (unlikely(pud_bad(*pud))) { | ^~~~~~~ include/linux/compiler.h:78:45: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/pgtable.h: At top level: include/linux/pgtable.h:873:41: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 873 | static inline int pmd_none_or_clear_bad(pmd_t *pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1083:34: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1083 | static inline int pmd_soft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1093:15: error: unknown type name 'pmd_t' 1093 | static inline pmd_t pmd_mksoft_dirty(pmd_t pmd) | ^~~~~ include/linux/pgtable.h:1093:38: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1093 | static inline pmd_t pmd_mksoft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1103:15: error: unknown type name 'pmd_t' 1103 | static inline pmd_t pmd_clear_soft_dirty(pmd_t pmd) | ^~~~~ include/linux/pgtable.h:1103:42: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1103 | static inline pmd_t pmd_clear_soft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1123:15: error: unknown type name 'pmd_t' 1123 | static inline pmd_t pmd_swp_mksoft_dirty(pmd_t pmd) | ^~~~~ include/linux/pgtable.h:1123:42: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1123 | static inline pmd_t pmd_swp_mksoft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1128:38: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1128 | static inline int pmd_swp_soft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1133:15: error: unknown type name 'pmd_t' 1133 | static inline pmd_t pmd_swp_clear_soft_dirty(pmd_t pmd) | ^~~~~ include/linux/pgtable.h:1133:46: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1133 | static inline pmd_t pmd_swp_clear_soft_dirty(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1264:30: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1264 | static inline int pmd_devmap(pmd_t pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1313:15: error: unknown type name 'pmd_t' 1313 | static inline pmd_t pmd_read_atomic(pmd_t *pmdp) | ^~~~~ include/linux/pgtable.h:1313:37: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1313 | static inline pmd_t pmd_read_atomic(pmd_t *pmdp) | ^~~~~ | pud_t include/linux/pgtable.h:1348:55: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1348 | static inline int pmd_none_or_trans_huge_or_clear_bad(pmd_t *pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1405:38: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1405 | static inline int pmd_trans_unstable(pmd_t *pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1420:45: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1420 | static inline int pmd_devmap_trans_unstable(pmd_t *pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1476:32: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1476 | static inline int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot) | ^~~~~ | pud_t include/linux/pgtable.h:1485:34: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1485 | static inline int pmd_clear_huge(pmd_t *pmd) | ^~~~~ | pud_t include/linux/pgtable.h:1497:37: error: unknown type name 'pmd_t'; did you mean 'pud_t'? 1497 | static inline int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) | ^~~~~ | pud_t arch/loongarch/include/asm/pgtable.h:164:19: error: static declaration of 'pud_none' follows non-static declaration 164 | static inline int pud_none(pud_t pud) | ^~~~~~~~ include/linux/pgtable.h:864:13: note: previous implicit declaration of 'pud_none' with type 'int()' 864 | if (pud_none(*pud)) | ^~~~~~~~ arch/loongarch/include/asm/pgtable.h:169:19: error: static declaration of 'pud_bad' follows non-static declaration 169 | static inline int pud_bad(pud_t pud) | ^~~~~~~ include/linux/pgtable.h:866:22: note: previous implicit declaration of 'pud_bad' with type 'int()' 866 | if (unlikely(pud_bad(*pud))) { | ^~~~~~~ include/linux/compiler.h:78:45: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ >> arch/loongarch/include/asm/pgtable.h:179:20: warning: conflicting types for 'pud_clear'; have 'void(pud_t *)' 179 | static inline void pud_clear(pud_t *pudp) | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:179:20: error: static declaration of 'pud_clear' follows non-static declaration include/linux/pgtable.h:364:9: note: previous implicit declaration of 'pud_clear' with type 'void(pud_t *)' 364 | pud_clear(pudp); | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:184:22: error: conflicting types for 'pud_pgtable'; have 'pmd_t *(pud_t)' 184 | static inline pmd_t *pud_pgtable(pud_t pud) | ^~~~~~~~~~~ include/linux/pgtable.h:111:16: note: previous implicit declaration of 'pud_pgtable' with type 'int()' 111 | return pud_pgtable(*pud) + pmd_index(address); | ^~~~~~~~~~~ arch/loongarch/include/asm/pgtable.h:199:19: error: static declaration of 'pmd_none' follows non-static declaration 199 | static inline int pmd_none(pmd_t pmd) | ^~~~~~~~ include/linux/pgtable.h:165:16: note: previous implicit declaration of 'pmd_none' with type 'int()' 165 | return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); | ^~~~~~~~ >> arch/loongarch/include/asm/pgtable.h:303:20: warning: conflicting types for 'set_pte_at'; have 'void(struct mm_struct *, long unsigned int, pte_t *, pte_t)' 303 | static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, | ^~~~~~~~~~ arch/loongarch/include/asm/pgtable.h:303:20: error: static declaration of 'set_pte_at' follows non-static declaration include/linux/pgtable.h:210:17: note: previous implicit declaration of 'set_pte_at' with type 'void(struct mm_struct *, long unsigned int, pte_t *, pte_t)' 210 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~~ >> arch/loongarch/include/asm/pgtable.h:309:20: warning: conflicting types for 'pte_clear'; have 'void(struct mm_struct *, long unsigned int, pte_t *)' 309 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:309:20: error: static declaration of 'pte_clear' follows non-static declaration include/linux/pgtable.h:269:9: note: previous implicit declaration of 'pte_clear' with type 'void(struct mm_struct *, long unsigned int, pte_t *)' 269 | pte_clear(mm, address, ptep); | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:330:19: error: static declaration of 'pte_young' follows non-static declaration 330 | static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } | ^~~~~~~~~ include/linux/pgtable.h:207:14: note: previous implicit declaration of 'pte_young' with type 'int()' 207 | if (!pte_young(pte)) | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:333:21: error: conflicting types for 'pte_mkold'; have 'pte_t(pte_t)' 333 | static inline pte_t pte_mkold(pte_t pte) | ^~~~~~~~~ include/linux/pgtable.h:210:55: note: previous implicit declaration of 'pte_mkold' with type 'int()' 210 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~ arch/loongarch/include/asm/pgtable.h:363:21: error: conflicting types for 'pte_wrprotect'; have 'pte_t(pte_t)' 363 | static inline pte_t pte_wrprotect(pte_t pte) | ^~~~~~~~~~~~~ include/linux/pgtable.h:455:39: note: previous implicit declaration of 'pte_wrprotect' with type 'int()' 455 | set_pte_at(mm, address, ptep, pte_wrprotect(old_pte)); | ^~~~~~~~~~~~~ >> arch/loongarch/include/asm/pgtable.h:382: warning: "pte_accessible" redefined 382 | #define pte_accessible pte_accessible | include/linux/pgtable.h:780: note: this is the location of the previous definition 780 | # define pte_accessible(mm, pte) ((void)(pte), 1) | In file included from include/linux/mm.h:703, from include/linux/pid_namespace.h:7, from include/linux/ptrace.h:10: include/linux/huge_mm.h: In function 'pmd_trans_huge_lock': include/linux/huge_mm.h:236:58: error: implicit declaration of function 'pmd_devmap'; did you mean 'pgd_devmap'? [-Werror=implicit-function-declaration] 236 | if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) | ^~~~~~~~~~ | pgd_devmap include/linux/mm.h: In function 'pmd_alloc': include/linux/mm.h:2205:21: error: returning 'int *' from a function with incompatible return type 'pmd_t *' [-Werror=incompatible-pointer-types] 2204 | return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))? | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2205 | NULL: pmd_offset(pud, address); | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors .. vim +179 arch/loongarch/include/asm/pgtable.h 09cfefb7fa70c3 Huacai Chen 2022-05-31 168 09cfefb7fa70c3 Huacai Chen 2022-05-31 @169 static inline int pud_bad(pud_t pud) 09cfefb7fa70c3 Huacai Chen 2022-05-31 170 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 171 return pud_val(pud) & ~PAGE_MASK; 09cfefb7fa70c3 Huacai Chen 2022-05-31 172 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 173 09cfefb7fa70c3 Huacai Chen 2022-05-31 174 static inline int pud_present(pud_t pud) 09cfefb7fa70c3 Huacai Chen 2022-05-31 175 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 176 return pud_val(pud) != (unsigned long)invalid_pmd_table; 09cfefb7fa70c3 Huacai Chen 2022-05-31 177 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 178 09cfefb7fa70c3 Huacai Chen 2022-05-31 @179 static inline void pud_clear(pud_t *pudp) 09cfefb7fa70c3 Huacai Chen 2022-05-31 180 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 181 pud_val(*pudp) = ((unsigned long)invalid_pmd_table); 09cfefb7fa70c3 Huacai Chen 2022-05-31 182 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 183 09cfefb7fa70c3 Huacai Chen 2022-05-31 184 static inline pmd_t *pud_pgtable(pud_t pud) 09cfefb7fa70c3 Huacai Chen 2022-05-31 185 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 186 return (pmd_t *)pud_val(pud); 09cfefb7fa70c3 Huacai Chen 2022-05-31 187 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 188 09cfefb7fa70c3 Huacai Chen 2022-05-31 189 #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while (0) 09cfefb7fa70c3 Huacai Chen 2022-05-31 190 09cfefb7fa70c3 Huacai Chen 2022-05-31 191 #define pud_phys(pud) virt_to_phys((void *)pud_val(pud)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 192 #define pud_page(pud) (pfn_to_page(pud_phys(pud) >> PAGE_SHIFT)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 193 09cfefb7fa70c3 Huacai Chen 2022-05-31 194 #endif 09cfefb7fa70c3 Huacai Chen 2022-05-31 195 09cfefb7fa70c3 Huacai Chen 2022-05-31 196 /* 09cfefb7fa70c3 Huacai Chen 2022-05-31 197 * Empty pmd entries point to the invalid_pte_table. 09cfefb7fa70c3 Huacai Chen 2022-05-31 198 */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 @199 static inline int pmd_none(pmd_t pmd) 09cfefb7fa70c3 Huacai Chen 2022-05-31 200 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 201 return pmd_val(pmd) == (unsigned long)invalid_pte_table; 09cfefb7fa70c3 Huacai Chen 2022-05-31 202 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 203 09cfefb7fa70c3 Huacai Chen 2022-05-31 204 static inline int pmd_bad(pmd_t pmd) 09cfefb7fa70c3 Huacai Chen 2022-05-31 205 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 206 return (pmd_val(pmd) & ~PAGE_MASK); 09cfefb7fa70c3 Huacai Chen 2022-05-31 207 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 208 09cfefb7fa70c3 Huacai Chen 2022-05-31 209 static inline int pmd_present(pmd_t pmd) 09cfefb7fa70c3 Huacai Chen 2022-05-31 210 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 211 if (unlikely(pmd_val(pmd) & _PAGE_HUGE)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 212 return !!(pmd_val(pmd) & (_PAGE_PRESENT | _PAGE_PROTNONE)); 09cfefb7fa70c3 Huacai Chen 2022-05-31 213 09cfefb7fa70c3 Huacai Chen 2022-05-31 214 return pmd_val(pmd) != (unsigned long)invalid_pte_table; 09cfefb7fa70c3 Huacai Chen 2022-05-31 215 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 216 09cfefb7fa70c3 Huacai Chen 2022-05-31 217 static inline void pmd_clear(pmd_t *pmdp) 09cfefb7fa70c3 Huacai Chen 2022-05-31 218 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 219 pmd_val(*pmdp) = ((unsigned long)invalid_pte_table); 09cfefb7fa70c3 Huacai Chen 2022-05-31 220 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 221 09cfefb7fa70c3 Huacai Chen 2022-05-31 222 #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while (0) 09cfefb7fa70c3 Huacai Chen 2022-05-31 223 09cfefb7fa70c3 Huacai Chen 2022-05-31 224 #define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 225 09cfefb7fa70c3 Huacai Chen 2022-05-31 226 #ifndef CONFIG_TRANSPARENT_HUGEPAGE 09cfefb7fa70c3 Huacai Chen 2022-05-31 227 #define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 228 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 229 09cfefb7fa70c3 Huacai Chen 2022-05-31 230 #define pmd_page_vaddr(pmd) pmd_val(pmd) 09cfefb7fa70c3 Huacai Chen 2022-05-31 231 09cfefb7fa70c3 Huacai Chen 2022-05-31 232 extern pmd_t mk_pmd(struct page *page, pgprot_t prot); 09cfefb7fa70c3 Huacai Chen 2022-05-31 233 extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd); 09cfefb7fa70c3 Huacai Chen 2022-05-31 234 09cfefb7fa70c3 Huacai Chen 2022-05-31 235 #define pte_page(x) pfn_to_page(pte_pfn(x)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 236 #define pte_pfn(x) ((unsigned long)(((x).pte & _PFN_MASK) >> _PFN_SHIFT)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 237 #define pfn_pte(pfn, prot) __pte(((pfn) << _PFN_SHIFT) | pgprot_val(prot)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 238 #define pfn_pmd(pfn, prot) __pmd(((pfn) << _PFN_SHIFT) | pgprot_val(prot)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 239 09cfefb7fa70c3 Huacai Chen 2022-05-31 240 /* 09cfefb7fa70c3 Huacai Chen 2022-05-31 241 * Initialize a new pgd / pmd table with invalid pointers. 09cfefb7fa70c3 Huacai Chen 2022-05-31 242 */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 243 extern void pgd_init(unsigned long page); 09cfefb7fa70c3 Huacai Chen 2022-05-31 244 extern void pud_init(unsigned long page, unsigned long pagetable); 09cfefb7fa70c3 Huacai Chen 2022-05-31 245 extern void pmd_init(unsigned long page, unsigned long pagetable); 09cfefb7fa70c3 Huacai Chen 2022-05-31 246 09cfefb7fa70c3 Huacai Chen 2022-05-31 247 /* 09cfefb7fa70c3 Huacai Chen 2022-05-31 248 * Non-present pages: high 40 bits are offset, next 8 bits type, 09cfefb7fa70c3 Huacai Chen 2022-05-31 249 * low 16 bits zero. 09cfefb7fa70c3 Huacai Chen 2022-05-31 250 */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 251 static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) 09cfefb7fa70c3 Huacai Chen 2022-05-31 252 { pte_t pte; pte_val(pte) = (type << 16) | (offset << 24); return pte; } 09cfefb7fa70c3 Huacai Chen 2022-05-31 253 09cfefb7fa70c3 Huacai Chen 2022-05-31 254 #define __swp_type(x) (((x).val >> 16) & 0xff) 09cfefb7fa70c3 Huacai Chen 2022-05-31 255 #define __swp_offset(x) ((x).val >> 24) 09cfefb7fa70c3 Huacai Chen 2022-05-31 256 #define __swp_entry(type, offset) ((swp_entry_t) { pte_val(mk_swap_pte((type), (offset))) }) 09cfefb7fa70c3 Huacai Chen 2022-05-31 257 #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) 09cfefb7fa70c3 Huacai Chen 2022-05-31 258 #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) 09cfefb7fa70c3 Huacai Chen 2022-05-31 259 #define __pmd_to_swp_entry(pmd) ((swp_entry_t) { pmd_val(pmd) }) 09cfefb7fa70c3 Huacai Chen 2022-05-31 260 #define __swp_entry_to_pmd(x) ((pmd_t) { (x).val | _PAGE_HUGE }) 09cfefb7fa70c3 Huacai Chen 2022-05-31 261 09cfefb7fa70c3 Huacai Chen 2022-05-31 262 extern void paging_init(void); 09cfefb7fa70c3 Huacai Chen 2022-05-31 263 09cfefb7fa70c3 Huacai Chen 2022-05-31 264 #define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 265 #define pte_present(pte) (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROTNONE)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 266 #define pte_no_exec(pte) (pte_val(pte) & _PAGE_NO_EXEC) 09cfefb7fa70c3 Huacai Chen 2022-05-31 267 09cfefb7fa70c3 Huacai Chen 2022-05-31 268 static inline void set_pte(pte_t *ptep, pte_t pteval) 09cfefb7fa70c3 Huacai Chen 2022-05-31 269 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 270 *ptep = pteval; 09cfefb7fa70c3 Huacai Chen 2022-05-31 271 if (pte_val(pteval) & _PAGE_GLOBAL) { 09cfefb7fa70c3 Huacai Chen 2022-05-31 272 pte_t *buddy = ptep_buddy(ptep); 09cfefb7fa70c3 Huacai Chen 2022-05-31 273 /* 09cfefb7fa70c3 Huacai Chen 2022-05-31 274 * Make sure the buddy is global too (if it's !none, 09cfefb7fa70c3 Huacai Chen 2022-05-31 275 * it better already be global) 09cfefb7fa70c3 Huacai Chen 2022-05-31 276 */ 46859ac8af52ae Huacai Chen 2022-05-31 277 #ifdef CONFIG_SMP 46859ac8af52ae Huacai Chen 2022-05-31 278 /* 46859ac8af52ae Huacai Chen 2022-05-31 279 * For SMP, multiple CPUs can race, so we need to do 46859ac8af52ae Huacai Chen 2022-05-31 280 * this atomically. 46859ac8af52ae Huacai Chen 2022-05-31 281 */ 46859ac8af52ae Huacai Chen 2022-05-31 282 unsigned long page_global = _PAGE_GLOBAL; 46859ac8af52ae Huacai Chen 2022-05-31 283 unsigned long tmp; 46859ac8af52ae Huacai Chen 2022-05-31 284 46859ac8af52ae Huacai Chen 2022-05-31 285 __asm__ __volatile__ ( 46859ac8af52ae Huacai Chen 2022-05-31 286 "1:" __LL "%[tmp], %[buddy] \n" 46859ac8af52ae Huacai Chen 2022-05-31 287 " bnez %[tmp], 2f \n" 46859ac8af52ae Huacai Chen 2022-05-31 288 " or %[tmp], %[tmp], %[global] \n" 46859ac8af52ae Huacai Chen 2022-05-31 289 __SC "%[tmp], %[buddy] \n" 46859ac8af52ae Huacai Chen 2022-05-31 290 " beqz %[tmp], 1b \n" 46859ac8af52ae Huacai Chen 2022-05-31 291 " nop \n" 46859ac8af52ae Huacai Chen 2022-05-31 292 "2: \n" 46859ac8af52ae Huacai Chen 2022-05-31 293 __WEAK_LLSC_MB 46859ac8af52ae Huacai Chen 2022-05-31 294 : [buddy] "+m" (buddy->pte), [tmp] "=&r" (tmp) 46859ac8af52ae Huacai Chen 2022-05-31 295 : [global] "r" (page_global)); 46859ac8af52ae Huacai Chen 2022-05-31 296 #else /* !CONFIG_SMP */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 297 if (pte_none(*buddy)) 09cfefb7fa70c3 Huacai Chen 2022-05-31 298 pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL; 46859ac8af52ae Huacai Chen 2022-05-31 299 #endif /* CONFIG_SMP */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 300 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 301 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 302 09cfefb7fa70c3 Huacai Chen 2022-05-31 @303 static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, 09cfefb7fa70c3 Huacai Chen 2022-05-31 304 pte_t *ptep, pte_t pteval) 09cfefb7fa70c3 Huacai Chen 2022-05-31 305 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 306 set_pte(ptep, pteval); 09cfefb7fa70c3 Huacai Chen 2022-05-31 307 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 308 09cfefb7fa70c3 Huacai Chen 2022-05-31 @309 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) 09cfefb7fa70c3 Huacai Chen 2022-05-31 310 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 311 /* Preserve global status for the pair */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 312 if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL) 09cfefb7fa70c3 Huacai Chen 2022-05-31 313 set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL)); 09cfefb7fa70c3 Huacai Chen 2022-05-31 314 else 09cfefb7fa70c3 Huacai Chen 2022-05-31 315 set_pte_at(mm, addr, ptep, __pte(0)); 09cfefb7fa70c3 Huacai Chen 2022-05-31 316 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 317 09cfefb7fa70c3 Huacai Chen 2022-05-31 318 #define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) 09cfefb7fa70c3 Huacai Chen 2022-05-31 319 #define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) 09cfefb7fa70c3 Huacai Chen 2022-05-31 320 #define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) 09cfefb7fa70c3 Huacai Chen 2022-05-31 321 09cfefb7fa70c3 Huacai Chen 2022-05-31 322 extern pgd_t swapper_pg_dir[]; 09cfefb7fa70c3 Huacai Chen 2022-05-31 323 extern pgd_t invalid_pg_dir[]; 09cfefb7fa70c3 Huacai Chen 2022-05-31 324 09cfefb7fa70c3 Huacai Chen 2022-05-31 325 /* 09cfefb7fa70c3 Huacai Chen 2022-05-31 326 * The following only work if pte_present() is true. 09cfefb7fa70c3 Huacai Chen 2022-05-31 327 * Undefined behaviour if not.. 09cfefb7fa70c3 Huacai Chen 2022-05-31 328 */ 09cfefb7fa70c3 Huacai Chen 2022-05-31 329 static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } 09cfefb7fa70c3 Huacai Chen 2022-05-31 330 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } 09cfefb7fa70c3 Huacai Chen 2022-05-31 331 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } 09cfefb7fa70c3 Huacai Chen 2022-05-31 332 09cfefb7fa70c3 Huacai Chen 2022-05-31 333 static inline pte_t pte_mkold(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 334 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 335 pte_val(pte) &= ~_PAGE_ACCESSED; 09cfefb7fa70c3 Huacai Chen 2022-05-31 336 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 337 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 338 09cfefb7fa70c3 Huacai Chen 2022-05-31 339 static inline pte_t pte_mkyoung(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 340 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 341 pte_val(pte) |= _PAGE_ACCESSED; 09cfefb7fa70c3 Huacai Chen 2022-05-31 342 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 343 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 344 09cfefb7fa70c3 Huacai Chen 2022-05-31 345 static inline pte_t pte_mkclean(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 346 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 347 pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_MODIFIED); 09cfefb7fa70c3 Huacai Chen 2022-05-31 348 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 349 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 350 09cfefb7fa70c3 Huacai Chen 2022-05-31 351 static inline pte_t pte_mkdirty(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 352 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 353 pte_val(pte) |= (_PAGE_DIRTY | _PAGE_MODIFIED); 09cfefb7fa70c3 Huacai Chen 2022-05-31 354 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 355 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 356 09cfefb7fa70c3 Huacai Chen 2022-05-31 357 static inline pte_t pte_mkwrite(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 358 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 359 pte_val(pte) |= (_PAGE_WRITE | _PAGE_DIRTY); 09cfefb7fa70c3 Huacai Chen 2022-05-31 360 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 361 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 362 09cfefb7fa70c3 Huacai Chen 2022-05-31 @363 static inline pte_t pte_wrprotect(pte_t pte) 09cfefb7fa70c3 Huacai Chen 2022-05-31 364 { 09cfefb7fa70c3 Huacai Chen 2022-05-31 365 pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_DIRTY); 09cfefb7fa70c3 Huacai Chen 2022-05-31 366 return pte; 09cfefb7fa70c3 Huacai Chen 2022-05-31 367 } 09cfefb7fa70c3 Huacai Chen 2022-05-31 368 -- 0-DAY CI Kernel Test Service https://01.org/lkp
