Hi Chintan, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.16-rc5 next-20180316] [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/Chintan-Pandya/Fix-issues-with-huge-mapping-in-ioremap/20180316-132223 config: powerpc-ppc64_defconfig (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 make.cross ARCH=powerpc All errors (new ones prefixed by >>): In file included from arch/powerpc/include/asm/tlb.h:36:0, from arch/powerpc/mm/mem.c:50: >> include/asm-generic/tlb.h:299:20: error: conflicting types for 'flush_tlb_pgtable' static inline void flush_tlb_pgtable(struct mm_struct *mm, ^~~~~~~~~~~~~~~~~ In file included from arch/powerpc/include/asm/tlbflush.h:81:0, from arch/powerpc/include/asm/pgtable.h:24, from include/linux/memremap.h:8, from include/linux/mm.h:27, from arch/powerpc/mm/mem.c:27: arch/powerpc/include/asm/book3s/64/tlbflush.h:143:20: note: previous definition of 'flush_tlb_pgtable' was here static inline void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address) ^~~~~~~~~~~~~~~~~ vim +/flush_tlb_pgtable +299 include/asm-generic/tlb.h 297 298 #ifndef CONFIG_ARM64 > 299 static inline void flush_tlb_pgtable(struct mm_struct *mm, --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation