Re: [RFC PATCH] mm: Add a new page type to mark unavailable pages

[kbuild test robot <lkp@intel.com>]

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Hi Baoquan,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on tip/x86/core]
[also build test ERROR on linus/master v5.7 next-20200529]
[cannot apply to mmotm/master linux/master]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Baoquan-He/mm-Add-a-new-page-type-to-mark-unavailable-pages/20200601-213615
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 9cb1fd0efd195590b828b9b865421ad345a4a145
config: x86_64-randconfig-r015-20200601 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

In file included from arch/x86/kernel/asm-offsets.c:9:
In file included from include/linux/crypto.h:19:
In file included from include/linux/slab.h:15:
In file included from include/linux/gfp.h:6:
>> include/linux/mmzone.h:1322:45: error: expected ';' after return statement
return valid_section(__pfn_to_section(pfn))
^
;
>> include/linux/mmzone.h:1333:24: error: use of undeclared identifier 'ms'
return (early_section(ms) && PageUnavail(pfn_to_page(pfn))) ||
^
>> include/linux/mmzone.h:1333:43: error: use of undeclared identifier 'vmemmap'; did you mean 'mem_map'?
return (early_section(ms) && PageUnavail(pfn_to_page(pfn))) ||
^
include/asm-generic/memory_model.h:82:21: note: expanded from macro 'pfn_to_page'
#define pfn_to_page __pfn_to_page
^
include/asm-generic/memory_model.h:54:29: note: expanded from macro '__pfn_to_page'
#define __pfn_to_page(pfn)      (vmemmap + (pfn))
^
include/linux/mmzone.h:648:21: note: 'mem_map' declared here
extern struct page *mem_map;
^
include/linux/mmzone.h:1334:27: error: use of undeclared identifier 'ms'
pfn_section_valid(ms, pfn);
^
4 errors generated.
make[2]: *** [scripts/Makefile.build:100: arch/x86/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1148: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:180: sub-make] Error 2

vim +1322 include/linux/mmzone.h

  1316	
  1317	#ifndef CONFIG_HAVE_ARCH_PFN_VALID
  1318	static inline int early_pfn_valid(unsigned long pfn)
  1319	{
  1320		if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
  1321			return 0;
> 1322		return valid_section(__pfn_to_section(pfn))
  1323	}
  1324	
  1325	static inline int pfn_valid(unsigned long pfn)
  1326	{
  1327		if (!early_pfn_valid(pfn))
  1328			return 0;
  1329		/*
  1330		 * Traditionally early sections always returned pfn_valid() for
  1331		 * the entire section-sized span.
  1332		 */
> 1333		return (early_section(ms) && PageUnavail(pfn_to_page(pfn))) ||
  1334		       pfn_section_valid(ms, pfn);
  1335	}
  1336	#endif
  1337	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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