Hi Mike, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.18 next-20180821] [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/Mike-Kravetz/huge_pmd_unshare-migration-and-flushing/20180822-050255 config: sparc64-allyesconfig (attached as .config) compiler: sparc64-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=sparc64 All errors (new ones prefixed by >>): mm/rmap.o: In function `try_to_unmap_one': rmap.c:(.text+0x2708): undefined reference to `huge_pmd_sharing_possible' mm/hugetlb.o: In function `__unmap_hugepage_range': >> hugetlb.c:(.text+0x5530): undefined reference to `huge_pmd_sharing_possible' mm/hugetlb.o: In function `unmap_hugepage_range': hugetlb.c:(.text+0x57bc): undefined reference to `huge_pmd_sharing_possible' mm/hugetlb.o: In function `hugetlb_change_protection': hugetlb.c:(.text+0x7714): undefined reference to `huge_pmd_sharing_possible' `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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