Hi zhijun.han", Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/zhijun-han/mm-swap-the-definition-of-CONFIG_SPARSEMEM_VMEMMAP-and-CONFIG_SPARSEMEM/20221104-113343 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20221104032808.24565-1-hanzj.it%40gmail.com patch subject: [PATCH] mm: swap the definition of CONFIG_SPARSEMEM_VMEMMAP and CONFIG_SPARSEMEM config: x86_64-randconfig-a013 compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/04bf0fed9ff385e0baa59523172d54a9d91519f9 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review zhijun-han/mm-swap-the-definition-of-CONFIG_SPARSEMEM_VMEMMAP-and-CONFIG_SPARSEMEM/20221104-113343 git checkout 04bf0fed9ff385e0baa59523172d54a9d91519f9 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 prepare If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): make[5]: *** No rule to make target 'tools/include/uapi/linux/stddef.h', needed by 'tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o'. Stop. make[4]: *** [Makefile:157: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2 make[3]: *** [Makefile:55: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2 make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2 make[1]: *** [Makefile:1423: tools/bpf/resolve_btfids] Error 2 In file included from arch/x86/include/asm/page.h:86, from arch/x86/include/asm/thread_info.h:12, from include/linux/thread_info.h:60, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/spinlock.h:56, from include/linux/mmzone.h:8, from include/linux/gfp.h:7, from include/linux/slab.h:15, from include/linux/crypto.h:20, from arch/x86/kernel/asm-offsets.c:9: include/linux/mm.h: In function 'folio_pfn': >> include/asm-generic/memory_model.h:29:21: error: implicit declaration of function 'page_to_section'; did you mean 'present_section'? [-Werror=implicit-function-declaration] 29 | int __sec = page_to_section(__pg); \ | ^~~~~~~~~~~~~~~ include/asm-generic/memory_model.h:52:21: note: in expansion of macro '__page_to_pfn' 52 | #define page_to_pfn __page_to_pfn | ^~~~~~~~~~~~~ include/linux/mm.h:1495:16: note: in expansion of macro 'page_to_pfn' 1495 | return page_to_pfn(&folio->page); | ^~~~~~~~~~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:118: arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:1270: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:231: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +29 include/asm-generic/memory_model.h a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 17 67de648211fa04 Andy Whitcroft 2006-06-23 18 #define __pfn_to_page(pfn) (mem_map + ((pfn) - ARCH_PFN_OFFSET)) 67de648211fa04 Andy Whitcroft 2006-06-23 19 #define __page_to_pfn(page) ((unsigned long)((page) - mem_map) + \ a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 20 ARCH_PFN_OFFSET) a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 21 a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 22 #elif defined(CONFIG_SPARSEMEM) a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 23 /* 1a49123b343461 Zhang Yanfei 2013-10-03 24 * Note: section's mem_map is encoded to reflect its start_pfn. a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 25 * section[i].section_mem_map == mem_map's address - start_pfn; a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 26 */ 67de648211fa04 Andy Whitcroft 2006-06-23 27 #define __page_to_pfn(pg) \ aa462abe8aaf21 Ian Campbell 2011-08-17 28 ({ const struct page *__pg = (pg); \ a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 @29 int __sec = page_to_section(__pg); \ f05b6284ee5d3b Randy Dunlap 2007-02-10 30 (unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \ a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 31 }) a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 32 -- 0-DAY CI Kernel Test Service https://01.org/lkp