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// skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> kernel/resource.c:1874:43: error: use of undeclared identifier 'MAX_PHYSMEM_BITS' 1874 | end = min_t(resource_size_t, base->end, PHYSMEM_END); | ^ include/linux/mm.h:101:32: note: expanded from macro 'PHYSMEM_END' 101 | # define PHYSMEM_END ((1ULL << MAX_PHYSMEM_BITS) - 1) | ^ kernel/resource.c:1891:51: error: use of undeclared identifier 'MAX_PHYSMEM_BITS' 1891 | addr <= min_t(resource_size_t, base->end, PHYSMEM_END); | ^ include/linux/mm.h:101:32: note: expanded from macro 'PHYSMEM_END' 101 | # define PHYSMEM_END ((1ULL << MAX_PHYSMEM_BITS) - 1) | ^ 1 warning and 2 errors generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [y]: - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y] vim +/MAX_PHYSMEM_BITS +1874 kernel/resource.c 14b80582c43e4f Dan Williams 2022-05-20 1867 14b80582c43e4f Dan Williams 2022-05-20 1868 static resource_size_t gfr_start(struct resource *base, resource_size_t size, 14b80582c43e4f Dan Williams 2022-05-20 1869 resource_size_t align, unsigned long flags) 14b80582c43e4f Dan Williams 2022-05-20 1870 { 14b80582c43e4f Dan Williams 2022-05-20 1871 if (flags & GFR_DESCENDING) { 14b80582c43e4f Dan Williams 2022-05-20 1872 resource_size_t end; 14b80582c43e4f Dan Williams 2022-05-20 1873 ea72ce5da22806 Thomas Gleixner 2024-08-14 @1874 end = min_t(resource_size_t, base->end, PHYSMEM_END); 14b80582c43e4f Dan Williams 2022-05-20 1875 return end - size + 1; 14b80582c43e4f Dan Williams 2022-05-20 1876 } 14b80582c43e4f Dan Williams 2022-05-20 1877 9d844a11c912c3 Huang Ying 2024-09-06 1878 return ALIGN(max(base->start, align), align); 14b80582c43e4f Dan Williams 2022-05-20 1879 } 14b80582c43e4f Dan Williams 2022-05-20 1880 :::::: The code at line 1874 was first introduced by commit :::::: ea72ce5da22806d5713f3ffb39a6d5ae73841f93 x86/kaslr: Expose and use the end of the physical memory address space :::::: TO: Thomas Gleixner :::::: CC: Thomas Gleixner -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki