Hi Yury, [auto build test WARNING on linus/master] [also build test WARNING on v4.9-rc8] [cannot apply to mmotm/master next-20161209] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Yury-Norov/mm-move-argument-checkers-of-mmap_pgoff-to-separated-routine/20161211-211314 config: i386-tinyconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): arch/x86/mm/pgtable.c: In function 'pgd_set_mm': >> arch/x86/mm/pgtable.c:108:29: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] virt_to_page(pgd)->index = (pgoff_t)mm; ^ arch/x86/mm/pgtable.c: In function 'pgd_page_get_mm': >> arch/x86/mm/pgtable.c:113:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] return (struct mm_struct *)page->index; ^ -- mm/percpu.c: In function 'pcpu_get_page_chunk': >> mm/percpu.c:240:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] return (struct pcpu_chunk *)page->index; ^ vim +108 arch/x86/mm/pgtable.c 68db065c Jeremy Fitzhardinge 2008-03-17 102 (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) 4f76cd38 Jeremy Fitzhardinge 2008-03-17 103 617d34d9 Jeremy Fitzhardinge 2010-09-21 104 617d34d9 Jeremy Fitzhardinge 2010-09-21 105 static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm) 617d34d9 Jeremy Fitzhardinge 2010-09-21 106 { 617d34d9 Jeremy Fitzhardinge 2010-09-21 107 BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm)); 617d34d9 Jeremy Fitzhardinge 2010-09-21 @108 virt_to_page(pgd)->index = (pgoff_t)mm; 617d34d9 Jeremy Fitzhardinge 2010-09-21 109 } 617d34d9 Jeremy Fitzhardinge 2010-09-21 110 617d34d9 Jeremy Fitzhardinge 2010-09-21 111 struct mm_struct *pgd_page_get_mm(struct page *page) 617d34d9 Jeremy Fitzhardinge 2010-09-21 112 { 617d34d9 Jeremy Fitzhardinge 2010-09-21 @113 return (struct mm_struct *)page->index; 617d34d9 Jeremy Fitzhardinge 2010-09-21 114 } 617d34d9 Jeremy Fitzhardinge 2010-09-21 115 617d34d9 Jeremy Fitzhardinge 2010-09-21 116 static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) :::::: The code at line 108 was first introduced by commit :::::: 617d34d9e5d8326ec8f188c616aa06ac59d083fe x86, mm: Hold mm->page_table_lock while doing vmalloc_sync :::::: TO: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx> :::::: CC: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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