Hi Aneesh, I love your patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on v4.20-rc5 next-20181207] [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/Aneesh-Kumar-K-V/arch-powerpc-mm-hugetlb-NestMMU-workaround-for-hugetlb-mprotect-RW-upgrade/20181207-025514 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=powerpc All errors (new ones prefixed by >>): arch/powerpc/mm/hugetlbpage-radix.c: In function 'radix__huge_ptep_modify_prot_commit': >> arch/powerpc/mm/hugetlbpage-radix.c:104:6: error: implicit declaration of function 'is_pte_rw_upgrade' [-Werror=implicit-function-declaration] if (is_pte_rw_upgrade(pte_val(old_pte), pte_val(pte)) && ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/is_pte_rw_upgrade +104 arch/powerpc/mm/hugetlbpage-radix.c 93 94 void radix__huge_ptep_modify_prot_commit(struct vm_area_struct *vma, 95 unsigned long addr, pte_t *ptep, 96 pte_t old_pte, pte_t pte) 97 { 98 struct mm_struct *mm = vma->vm_mm; 99 100 /* 101 * To avoid NMMU hang while relaxing access we need to flush the tlb before 102 * we set the new value. 103 */ > 104 if (is_pte_rw_upgrade(pte_val(old_pte), pte_val(pte)) && --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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