tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git arm64-ro-page-tables-pkvm head: 013c3cfada2933235858e3db49db939379e7003f commit: 013c3cfada2933235858e3db49db939379e7003f [63/63] mm: HACK provide target address when migrating a PMD entry config: powerpc64-randconfig-r005-20210309 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 820f508b08d7c94b2dd7847e9710d2bc36d3dd45) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id... git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git git fetch --no-tags ardb arm64-ro-page-tables-pkvm git checkout 013c3cfada2933235858e3db49db939379e7003f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 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 >>): set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE)); ^~~~~~~ arch/powerpc/include/asm/pgtable-be-types.h:24:41: note: expanded from macro '__pmd' #define __pmd(x) ((pmd_t) { cpu_to_be64(x) }) ^ include/uapi/linux/byteorder/big_endian.h:37:51: note: expanded from macro '__cpu_to_be64' #define __cpu_to_be64(x) ((__force __be64)(__u64)(x)) ^ arch/powerpc/include/asm/io.h:938:53: note: passing argument to parameter 'page' here static inline phys_addr_t page_to_phys(struct page *page) ^ mm/huge_memory.c:2031:59: error: use of undeclared identifier 'PMD_TYPE_TABLE' set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE)); ^ mm/huge_memory.c:2198:48: error: incompatible pointer types passing 'pgtable_t' (aka 'pte_t *') to parameter of type 'struct page *' [-Werror,-Wincompatible-pointer-types] set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE)); ^~~~~~~ arch/powerpc/include/asm/pgtable-be-types.h:24:41: note: expanded from macro '__pmd' #define __pmd(x) ((pmd_t) { cpu_to_be64(x) }) ^ include/uapi/linux/byteorder/big_endian.h:37:51: note: expanded from macro '__cpu_to_be64' #define __cpu_to_be64(x) ((__force __be64)(__u64)(x)) ^ arch/powerpc/include/asm/io.h:938:53: note: passing argument to parameter 'page' here static inline phys_addr_t page_to_phys(struct page *page) ^ mm/huge_memory.c:2198:59: error: use of undeclared identifier 'PMD_TYPE_TABLE' set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE)); ^ 4 errors generated. vim +2031 mm/huge_memory.c 1998 1999 static void __split_huge_zero_page_pmd(struct vm_area_struct *vma, 2000 unsigned long haddr, pmd_t *pmd) 2001 { 2002 struct mm_struct *mm = vma->vm_mm; 2003 pgtable_t pgtable; 2004 pmd_t _pmd; 2005 int i; 2006 2007 /* 2008 * Leave pmd empty until pte is filled note that it is fine to delay 2009 * notification until mmu_notifier_invalidate_range_end() as we are 2010 * replacing a zero pmd write protected page with a zero pte write 2011 * protected page. 2012 * 2013 * See Documentation/vm/mmu_notifier.rst 2014 */ 2015 pmdp_huge_clear_flush(vma, haddr, pmd); 2016 2017 pgtable = pgtable_trans_huge_withdraw(mm, pmd); 2018 pmd_populate(mm, &_pmd, pgtable); 2019 2020 for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) { 2021 pte_t *pte, entry; 2022 entry = pfn_pte(my_zero_pfn(haddr), vma->vm_page_prot); 2023 entry = pte_mkspecial(entry); 2024 pte = pte_offset_map(&_pmd, haddr); 2025 VM_BUG_ON(!pte_none(*pte)); 2026 set_pte_at(mm, haddr, pte, entry); 2027 pte_unmap(pte); 2028 } 2029 smp_wmb(); /* make pte visible before pmd */ 2030 //pmd_populate(mm, pmd, pgtable); 2032 } 2033 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org