Hi Jani, kernel test robot noticed the following build errors: [auto build test ERROR on drm/drm-next] [also build test ERROR on next-20240826] [cannot apply to drm-misc/drm-misc-next linus/master v6.11-rc5] [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/Jani-Nikula/drm-ensure-drm-headers-are-self-contained-and-pass-kernel-doc/20240826-134953 base: git://anongit.freedesktop.org/drm/drm drm-next patch link: https://lore.kernel.org/r/20240823141110.3431423-2-jani.nikula%40intel.com patch subject: [PATCH 2/2] drm: ensure drm headers are self-contained and pass kernel-doc config: arc-allmodconfig (https://download.01.org/0day-ci/archive/20240827/202408270538.dEV4dXpq-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408270538.dEV4dXpq-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408270538.dEV4dXpq-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): | ^~~~~~~ arch/arc/include/asm/pgtable-levels.h:160:34: note: in expansion of macro 'pmd_val' 160 | #define pmd_page_vaddr(pmd) (pmd_val(pmd) & PAGE_MASK) | ^~~~~~~ include/linux/pgtable.h:96:25: note: in expansion of macro 'pmd_page_vaddr' 96 | return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address); | ^~~~~~~~~~~~~~ include/linux/pgtable.h: In function 'pmd_off': include/linux/pgtable.h:165:38: error: implicit declaration of function 'p4d_offset'; did you mean 'pmd_offset'? [-Werror=implicit-function-declaration] 165 | return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va); | ^~~~~~~~~~ | pmd_offset include/linux/pgtable.h:165:38: warning: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion] 165 | return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | int include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int' 42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) | ~~~~~~~^~~ include/linux/pgtable.h: In function 'pmd_off_k': include/linux/pgtable.h:170:38: warning: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion] 170 | return pmd_offset(pud_offset(p4d_offset(pgd_offset_k(va), va), va), va); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | int include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int' 42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) | ~~~~~~~^~~ include/linux/pgtable.h: In function 'virt_to_kpte': arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union 41 | #define pgd_val(x) ((x).pgd) | ^ include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val' 40 | #define p4d_val(x) (pgd_val((x).pgd)) | ^~~~~~~ include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val' 48 | #define pud_val(x) (p4d_val((x).p4d)) | ^~~~~~~ include/asm-generic/pgtable-nopmd.h:52:50: note: in expansion of macro 'pud_val' 52 | #define pmd_val(x) (pud_val((x).pud)) | ^~~~~~~ arch/arc/include/asm/pgtable-levels.h:156:35: note: in expansion of macro 'pmd_val' 156 | #define pmd_none(x) (!pmd_val(x)) | ^~~~~~~ include/linux/pgtable.h:177:16: note: in expansion of macro 'pmd_none' 177 | return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); | ^~~~~~~~ include/linux/pgtable.h: In function 'ptep_test_and_clear_young': include/linux/pgtable.h:359:55: error: implicit declaration of function 'pte_mkold'; did you mean 'pmd_mkold'? [-Werror=implicit-function-declaration] 359 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~ include/linux/pgtable.h:280:66: note: in definition of macro 'set_pte_at' 280 | #define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) | ^~~ include/linux/pgtable.h:359:55: error: incompatible type for argument 4 of 'set_ptes' 359 | set_pte_at(vma->vm_mm, address, ptep, pte_mkold(pte)); | ^~~~~~~~~~~~~~ | | | int include/linux/pgtable.h:280:66: note: in definition of macro 'set_pte_at' 280 | #define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) | ^~~ include/linux/pgtable.h:265:36: note: expected 'pte_t' but argument is of type 'int' 265 | pte_t *ptep, pte_t pte, unsigned int nr) | ~~~~~~^~~ include/linux/pgtable.h: In function 'pmdp_test_and_clear_young': arch/arc/include/asm/page.h:74:29: error: request for member 'pte' in something not a structure or union 74 | #define pte_val(x) ((x).pte) | ^ arch/arc/include/asm/pgtable-bits-arcv2.h:82:34: note: in expansion of macro 'pte_val' 82 | #define pte_young(pte) (pte_val(pte) & _PAGE_ACCESSED) | ^~~~~~~ arch/arc/include/asm/hugepage.h:40:33: note: in expansion of macro 'pte_young' 40 | #define pmd_young(pmd) pte_young(pmd_pte(pmd)) | ^~~~~~~~~ include/linux/pgtable.h:372:14: note: in expansion of macro 'pmd_young' 372 | if (!pmd_young(pmd)) | ^~~~~~~~~ arch/arc/include/asm/hugepage.h:33:33: error: implicit declaration of function 'pte_pmd'; did you mean 'pfn_pmd'? [-Werror=implicit-function-declaration] 33 | #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) | ^~~~~~~ include/linux/pgtable.h:375:55: note: in expansion of macro 'pmd_mkold' 375 | set_pmd_at(vma->vm_mm, address, pmdp, pmd_mkold(pmd)); | ^~~~~~~~~ arch/arc/include/asm/hugepage.h:33:33: error: incompatible type for argument 4 of 'set_pmd_at' 33 | #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/pgtable.h:375:55: note: in expansion of macro 'pmd_mkold' 375 | set_pmd_at(vma->vm_mm, address, pmdp, pmd_mkold(pmd)); | ^~~~~~~~~ arch/arc/include/asm/hugepage.h:59:50: note: expected 'pmd_t' but argument is of type 'int' 59 | pmd_t *pmdp, pmd_t pmd) | ~~~~~~^~~ include/linux/pgtable.h: In function 'clear_young_dirty_ptes': include/linux/pgtable.h:493:39: error: incompatible types when assigning to type 'pte_t' from type 'int' 493 | pte = pte_mkold(pte); | ^~~~~~~~~ >> include/linux/pgtable.h:495:39: error: implicit declaration of function 'pte_mkclean'; did you mean 'pmd_mkclean'? [-Werror=implicit-function-declaration] 495 | pte = pte_mkclean(pte); | ^~~~~~~~~~~ | pmd_mkclean include/linux/pgtable.h:495:39: error: incompatible types when assigning to type 'pte_t' from type 'int' include/linux/pgtable.h: In function 'pmdp_huge_get_and_clear': arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union 41 | #define pgd_val(x) ((x).pgd) | ^ include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val' 40 | #define p4d_val(x) (pgd_val((x).pgd)) | ^~~~~~~ include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val' 48 | #define pud_val(x) (p4d_val((x).p4d)) | ^~~~~~~ include/asm-generic/pgtable-nopmd.h:52:50: note: in expansion of macro 'pud_val' 52 | #define pmd_val(x) (pud_val((x).pud)) | ^~~~~~~ arch/arc/include/asm/pgtable-levels.h:159:38: note: in expansion of macro 'pmd_val' 159 | #define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0) | ^~~~~~~ include/linux/pgtable.h:603:9: note: in expansion of macro 'pmd_clear' 603 | pmd_clear(pmdp); | ^~~~~~~~~ include/linux/pgtable.h: In function 'get_and_clear_full_ptes': >> include/linux/pgtable.h:684:31: error: implicit declaration of function 'pte_mkdirty'; did you mean 'pte_dirty'? [-Werror=implicit-function-declaration] 684 | pte = pte_mkdirty(pte); | ^~~~~~~~~~~ | pte_dirty include/linux/pgtable.h:684:31: error: incompatible types when assigning to type 'pte_t' from type 'int' >> include/linux/pgtable.h:686:31: error: implicit declaration of function 'pte_mkyoung'; did you mean 'pte_young'? [-Werror=implicit-function-declaration] 686 | pte = pte_mkyoung(pte); | ^~~~~~~~~~~ | pte_young include/linux/pgtable.h:686:31: error: incompatible types when assigning to type 'pte_t' from type 'int' include/linux/pgtable.h: In function 'pte_mkwrite': include/linux/pgtable.h:807:16: error: implicit declaration of function 'pte_mkwrite_novma'; did you mean 'pmd_mkwrite_novma'? [-Werror=implicit-function-declaration] 807 | return pte_mkwrite_novma(pte); | ^~~~~~~~~~~~~~~~~ | pmd_mkwrite_novma include/linux/pgtable.h:807:16: error: incompatible types when returning type 'int' but 'pte_t' was expected 807 | return pte_mkwrite_novma(pte); | ^~~~~~~~~~~~~~~~~~~~~~ include/linux/pgtable.h: In function 'pmd_mkwrite': arch/arc/include/asm/hugepage.h:31:33: error: incompatible types when returning type 'int' but 'pmd_t' was expected 31 | #define pmd_mkwrite_novma(pmd) pte_pmd(pte_mkwrite_novma(pmd_pte(pmd))) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pgtable.h:814:16: note: in expansion of macro 'pmd_mkwrite_novma' 814 | return pmd_mkwrite_novma(pmd); | ^~~~~~~~~~~~~~~~~ include/linux/pgtable.h: In function 'ptep_set_wrprotect': include/linux/pgtable.h:823:39: error: implicit declaration of function 'pte_wrprotect'; did you mean 'pmd_wrprotect'? [-Werror=implicit-function-declaration] 823 | set_pte_at(mm, address, ptep, pte_wrprotect(old_pte)); | ^~~~~~~~~~~~~ include/linux/pgtable.h:280:66: note: in definition of macro 'set_pte_at' 280 | #define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) | ^~~ include/linux/pgtable.h:823:39: error: incompatible type for argument 4 of 'set_ptes' 823 | set_pte_at(mm, address, ptep, pte_wrprotect(old_pte)); | ^~~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/pgtable.h:280:66: note: in definition of macro 'set_pte_at' 280 | #define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) | ^~~ include/linux/pgtable.h:265:36: note: expected 'pte_t' but argument is of type 'int' 265 | pte_t *ptep, pte_t pte, unsigned int nr) | ~~~~~~^~~ include/linux/pgtable.h: In function 'pmdp_set_wrprotect': arch/arc/include/asm/hugepage.h:30:33: error: incompatible type for argument 4 of 'set_pmd_at' 30 | #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | int include/linux/pgtable.h:880:39: note: in expansion of macro 'pmd_wrprotect' 880 | set_pmd_at(mm, address, pmdp, pmd_wrprotect(old_pmd)); | ^~~~~~~~~~~~~ arch/arc/include/asm/hugepage.h:59:50: note: expected 'pmd_t' but argument is of type 'int' 59 | pmd_t *pmdp, pmd_t pmd) | ~~~~~~^~~ include/linux/pgtable.h: In function 'pmd_same': arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union 41 | #define pgd_val(x) ((x).pgd) | ^ include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val' 40 | #define p4d_val(x) (pgd_val((x).pgd)) | ^~~~~~~ include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val' 48 | #define pud_val(x) (p4d_val((x).p4d)) | ^~~~~~~ include/asm-generic/pgtable-nopmd.h:52:50: note: in expansion of macro 'pud_val' 52 | #define pmd_val(x) (pud_val((x).pud)) | ^~~~~~~ include/linux/pgtable.h:1027:16: note: in expansion of macro 'pmd_val' 1027 | return pmd_val(pmd_a) == pmd_val(pmd_b); | ^~~~~~~ arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union 41 | #define pgd_val(x) ((x).pgd) | ^ include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val' 40 | #define p4d_val(x) (pgd_val((x).pgd)) | ^~~~~~~ include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val' 48 | #define pud_val(x) (p4d_val((x).p4d)) | ^~~~~~~ include/asm-generic/pgtable-nopmd.h:52:50: note: in expansion of macro 'pud_val' 52 | #define pmd_val(x) (pud_val((x).pud)) | ^~~~~~~ include/linux/pgtable.h:1027:34: note: in expansion of macro 'pmd_val' 1027 | return pmd_val(pmd_a) == pmd_val(pmd_b); | ^~~~~~~ include/linux/pgtable.h:1025:34: warning: parameter 'pmd_a' set but not used [-Wunused-but-set-parameter] 1025 | static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) | ~~~~~~^~~~~ include/linux/pgtable.h:1025:47: warning: parameter 'pmd_b' set but not used [-Wunused-but-set-parameter] 1025 | static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) | ~~~~~~^~~~~ include/linux/pgtable.h: In function 'pud_same': arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union 41 | #define pgd_val(x) ((x).pgd) | ^ include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val' 40 | #define p4d_val(x) (pgd_val((x).pgd)) | ^~~~~~~ include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val' 48 | #define pud_val(x) (p4d_val((x).p4d)) | ^~~~~~~ include/linux/pgtable.h:1034:16: note: in expansion of macro 'pud_val' 1034 | return pud_val(pud_a) == pud_val(pud_b); | ^~~~~~~ arch/arc/include/asm/page.h:41:29: error: request for member 'pgd' in something not a structure or union vim +495 include/linux/pgtable.h e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 461 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 462 #ifndef clear_young_dirty_ptes 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 463 /** 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 464 * clear_young_dirty_ptes - Mark PTEs that map consecutive pages of the 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 465 * same folio as old/clean. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 466 * @mm: Address space the pages are mapped into. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 467 * @addr: Address the first page is mapped at. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 468 * @ptep: Page table pointer for the first entry. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 469 * @nr: Number of entries to mark old/clean. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 470 * @flags: Flags to modify the PTE batch semantics. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 471 * 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 472 * May be overridden by the architecture; otherwise, implemented by 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 473 * get_and_clear/modify/set for each pte in the range. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 474 * 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 475 * Note that PTE bits in the PTE range besides the PFN can differ. For example, 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 476 * some PTEs might be write-protected. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 477 * 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 478 * Context: The caller holds the page table lock. The PTEs map consecutive 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 479 * pages that belong to the same folio. The PTEs are all in the same PMD. 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 480 */ 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 481 static inline void clear_young_dirty_ptes(struct vm_area_struct *vma, 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 482 unsigned long addr, pte_t *ptep, 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 483 unsigned int nr, cydp_t flags) 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 484 { 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 485 pte_t pte; 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 486 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 487 for (;;) { 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 488 if (flags == CYDP_CLEAR_YOUNG) 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 489 ptep_test_and_clear_young(vma, addr, ptep); 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 490 else { 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 491 pte = ptep_get_and_clear(vma->vm_mm, addr, ptep); 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 492 if (flags & CYDP_CLEAR_YOUNG) 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 493 pte = pte_mkold(pte); 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 494 if (flags & CYDP_CLEAR_DIRTY) 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 @495 pte = pte_mkclean(pte); 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 496 set_pte_at(vma->vm_mm, addr, ptep, pte); 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 497 } 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 498 if (--nr == 0) 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 499 break; 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 500 ptep++; 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 501 addr += PAGE_SIZE; 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 502 } 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 503 } 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 504 #endif 1b68112c40395b include/linux/pgtable.h Lance Yang 2024-04-18 505 de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 506 static inline void ptep_clear(struct mm_struct *mm, unsigned long addr, de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 507 pte_t *ptep) de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 508 { de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 509 ptep_get_and_clear(mm, addr, ptep); de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 510 } de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 511 6ca297d4784625 include/linux/pgtable.h Peter Zijlstra 2022-10-21 512 #ifdef CONFIG_GUP_GET_PXX_LOW_HIGH 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 513 /* 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 514 * For walking the pagetables without holding any locks. Some architectures 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 515 * (eg x86-32 PAE) cannot load the entries atomically without using expensive 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 516 * instructions. We are guaranteed that a PTE will only either go from not 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 517 * present to present, or present to not present -- it will not switch to a 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 518 * completely different present page without a TLB flush inbetween; which we 93b3037a148275 include/linux/pgtable.h Peter Zijlstra 2020-11-26 519 * are blocking by holding interrupts off. 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 520 * 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 521 * Setting ptes from not present to present goes: 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 522 * 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 523 * ptep->pte_high = h; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 524 * smp_wmb(); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 525 * ptep->pte_low = l; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 526 * 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 527 * And present to not present goes: 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 528 * 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 529 * ptep->pte_low = 0; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 530 * smp_wmb(); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 531 * ptep->pte_high = 0; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 532 * 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 533 * We must ensure here that the load of pte_low sees 'l' IFF pte_high sees 'h'. 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 534 * We load pte_high *after* loading pte_low, which ensures we don't see an older 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 535 * value of pte_high. *Then* we recheck pte_low, which ensures that we haven't 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 536 * picked up a changed pte high. We might have gotten rubbish values from 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 537 * pte_low and pte_high, but we are guaranteed that pte_low will not have the 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 538 * present bit set *unless* it is 'l'. Because get_user_pages_fast() only 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 539 * operates on present ptes we're safe. 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 540 */ 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 541 static inline pte_t ptep_get_lockless(pte_t *ptep) 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 542 { 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 543 pte_t pte; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 544 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 545 do { 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 546 pte.pte_low = ptep->pte_low; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 547 smp_rmb(); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 548 pte.pte_high = ptep->pte_high; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 549 smp_rmb(); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 550 } while (unlikely(pte.pte_low != ptep->pte_low)); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 551 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 552 return pte; 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 553 } 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 554 #define ptep_get_lockless ptep_get_lockless 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 555 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 556 #if CONFIG_PGTABLE_LEVELS > 2 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 557 static inline pmd_t pmdp_get_lockless(pmd_t *pmdp) 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 558 { 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 559 pmd_t pmd; 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 560 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 561 do { 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 562 pmd.pmd_low = pmdp->pmd_low; 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 563 smp_rmb(); 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 564 pmd.pmd_high = pmdp->pmd_high; 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 565 smp_rmb(); 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 566 } while (unlikely(pmd.pmd_low != pmdp->pmd_low)); 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 567 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 568 return pmd; 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 569 } 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 570 #define pmdp_get_lockless pmdp_get_lockless 146b42e07494e4 include/linux/pgtable.h Hugh Dickins 2023-07-11 571 #define pmdp_get_lockless_sync() tlb_remove_table_sync_one() 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 572 #endif /* CONFIG_PGTABLE_LEVELS > 2 */ 6ca297d4784625 include/linux/pgtable.h Peter Zijlstra 2022-10-21 573 #endif /* CONFIG_GUP_GET_PXX_LOW_HIGH */ 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 574 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 575 /* 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 576 * We require that the PTE can be read atomically. 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 577 */ 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 578 #ifndef ptep_get_lockless 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 579 static inline pte_t ptep_get_lockless(pte_t *ptep) 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 580 { 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 581 return ptep_get(ptep); 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 582 } 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 583 #endif 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 584 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 585 #ifndef pmdp_get_lockless 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 586 static inline pmd_t pmdp_get_lockless(pmd_t *pmdp) 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 587 { 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 588 return pmdp_get(pmdp); 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 589 } 146b42e07494e4 include/linux/pgtable.h Hugh Dickins 2023-07-11 590 static inline void pmdp_get_lockless_sync(void) 146b42e07494e4 include/linux/pgtable.h Hugh Dickins 2023-07-11 591 { 146b42e07494e4 include/linux/pgtable.h Hugh Dickins 2023-07-11 592 } 024d232ae4fcd7 include/linux/pgtable.h Peter Zijlstra 2020-11-26 593 #endif 2a4a06da8a4b93 include/linux/pgtable.h Peter Zijlstra 2020-11-13 594 e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 595 #ifdef CONFIG_TRANSPARENT_HUGEPAGE a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 596 #ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR 8809aa2d28d741 include/asm-generic/pgtable.h Aneesh Kumar K.V 2015-06-24 597 static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 598 unsigned long address, e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 599 pmd_t *pmdp) e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 600 { e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 601 pmd_t pmd = *pmdp; de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 602 2d28a2275c21d0 include/asm-generic/pgtable.h Catalin Marinas 2012-10-08 603 pmd_clear(pmdp); 1831414cd729a3 include/linux/pgtable.h Kemeng Shi 2023-07-14 604 page_table_check_pmd_clear(mm, pmd); de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 605 e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 606 return pmd; 49b24d6b41c576 include/asm-generic/pgtable.h Nicolas Kaiser 2011-06-15 607 } a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 608 #endif /* __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR */ a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 609 #ifndef __HAVE_ARCH_PUDP_HUGE_GET_AND_CLEAR a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 610 static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm, a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 611 unsigned long address, a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 612 pud_t *pudp) a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 613 { a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 614 pud_t pud = *pudp; a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 615 a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 616 pud_clear(pudp); 931c38e16499a0 include/linux/pgtable.h Kemeng Shi 2023-07-14 617 page_table_check_pud_clear(mm, pud); de8c8e52836d00 include/linux/pgtable.h Tong Tiangen 2022-05-12 618 a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 619 return pud; a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 620 } a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 621 #endif /* __HAVE_ARCH_PUDP_HUGE_GET_AND_CLEAR */ e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 622 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ ^1da177e4c3f41 include/asm-generic/pgtable.h Linus Torvalds 2005-04-16 623 fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 624 #ifdef CONFIG_TRANSPARENT_HUGEPAGE a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 625 #ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL 93a98695f2f9f9 include/asm-generic/pgtable.h Aneesh Kumar K.V 2020-05-05 626 static inline pmd_t pmdp_huge_get_and_clear_full(struct vm_area_struct *vma, fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 627 unsigned long address, pmd_t *pmdp, fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 628 int full) fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 629 { 93a98695f2f9f9 include/asm-generic/pgtable.h Aneesh Kumar K.V 2020-05-05 630 return pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp); fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 631 } fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 632 #endif fcbe08d66f57c3 include/asm-generic/pgtable.h Martin Schwidefsky 2014-10-24 633 a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 634 #ifndef __HAVE_ARCH_PUDP_HUGE_GET_AND_CLEAR_FULL f32928ab6fe5ab include/linux/pgtable.h Aneesh Kumar K.V 2023-07-25 635 static inline pud_t pudp_huge_get_and_clear_full(struct vm_area_struct *vma, a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 636 unsigned long address, pud_t *pudp, a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 637 int full) a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 638 { f32928ab6fe5ab include/linux/pgtable.h Aneesh Kumar K.V 2023-07-25 639 return pudp_huge_get_and_clear(vma->vm_mm, address, pudp); a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 640 } a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 641 #endif a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 642 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ a00cc7d9dd93d6 include/asm-generic/pgtable.h Matthew Wilcox 2017-02-24 643 a600388d284193 include/asm-generic/pgtable.h Zachary Amsden 2005-09-03 644 #ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 645 static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 646 unsigned long address, pte_t *ptep, e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 647 int full) e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 648 { d3a89233583bf8 include/linux/pgtable.h zhang songyi 2022-11-28 649 return ptep_get_and_clear(mm, address, ptep); e2cda322648122 include/asm-generic/pgtable.h Andrea Arcangeli 2011-01-13 650 } a600388d284193 include/asm-generic/pgtable.h Zachary Amsden 2005-09-03 651 #endif a600388d284193 include/asm-generic/pgtable.h Zachary Amsden 2005-09-03 652 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 653 #ifndef get_and_clear_full_ptes 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 654 /** 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 655 * get_and_clear_full_ptes - Clear present PTEs that map consecutive pages of 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 656 * the same folio, collecting dirty/accessed bits. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 657 * @mm: Address space the pages are mapped into. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 658 * @addr: Address the first page is mapped at. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 659 * @ptep: Page table pointer for the first entry. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 660 * @nr: Number of entries to clear. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 661 * @full: Whether we are clearing a full mm. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 662 * 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 663 * May be overridden by the architecture; otherwise, implemented as a simple 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 664 * loop over ptep_get_and_clear_full(), merging dirty/accessed bits into the 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 665 * returned PTE. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 666 * 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 667 * Note that PTE bits in the PTE range besides the PFN can differ. For example, 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 668 * some PTEs might be write-protected. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 669 * 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 670 * Context: The caller holds the page table lock. The PTEs map consecutive 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 671 * pages that belong to the same folio. The PTEs are all in the same PMD. 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 672 */ 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 673 static inline pte_t get_and_clear_full_ptes(struct mm_struct *mm, 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 674 unsigned long addr, pte_t *ptep, unsigned int nr, int full) 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 675 { 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 676 pte_t pte, tmp_pte; 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 677 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 678 pte = ptep_get_and_clear_full(mm, addr, ptep, full); 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 679 while (--nr) { 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 680 ptep++; 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 681 addr += PAGE_SIZE; 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 682 tmp_pte = ptep_get_and_clear_full(mm, addr, ptep, full); 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 683 if (pte_dirty(tmp_pte)) 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 @684 pte = pte_mkdirty(pte); 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 685 if (pte_young(tmp_pte)) 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 @686 pte = pte_mkyoung(pte); 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 687 } 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 688 return pte; 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 689 } 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 690 #endif 10ebac4f95e7a9 include/linux/pgtable.h David Hildenbrand 2024-02-14 691 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
