tree: https://github.com/hnaz/linux-mm master head: 82f0963cec9bc87571b9666fee12a6a2e47d1193 commit: aecd6390e2fec5d15dea7c20a8d44d3a00ace96e [432/544] mm: consolidate pgd_index() and pgd_offset{_k}() definitions config: powerpc-randconfig-r035-20200607 (attached as .config) compiler: powerpc-linux-gcc (GCC) 9.3.0 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 git checkout aecd6390e2fec5d15dea7c20a8d44d3a00ace96e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from arch/powerpc/include/asm/nohash/pgtable.h:8, from arch/powerpc/include/asm/pgtable.h:20, from include/linux/pgtable.h:6, from arch/powerpc/include/asm/kup.h:42, from arch/powerpc/include/asm/uaccess.h:9, from include/linux/uaccess.h:11, from include/linux/crypto.h:21, from include/crypto/hash.h:11, from include/linux/uio.h:10, from include/linux/socket.h:8, from include/linux/compat.h:15, from arch/powerpc/kernel/asm-offsets.c:14: arch/powerpc/include/asm/nohash/32/pgtable.h: In function 'pte_update': << from arch/powerpc/include/asm/nohash/32/pgtable.h:5, >> arch/powerpc/include/asm/nohash/32/pgtable.h:237:37: error: implicit declaration of function 'pgd_offset'; did you mean 'pmd_offset'? [-Werror=implicit-function-declaration] 237 | pmd_t *pmd = pmd_offset(pud_offset(pgd_offset(mm, addr), addr), addr); | ^~~~~~~~~~ | pmd_offset << from arch/powerpc/include/asm/nohash/32/pgtable.h:5, >> arch/powerpc/include/asm/nohash/32/pgtable.h:237:37: warning: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion] 237 | pmd_t *pmd = pmd_offset(pud_offset(pgd_offset(mm, addr), addr), addr); | ^~~~~~~~~~~~~~~~~~~~ | | | int In file included from include/asm-generic/pgtable-nopmd.h:7, from arch/powerpc/include/asm/nohash/32/pgtable.h:5, from arch/powerpc/include/asm/nohash/pgtable.h:8, from arch/powerpc/include/asm/pgtable.h:20, from include/linux/pgtable.h:6, from arch/powerpc/include/asm/kup.h:42, from arch/powerpc/include/asm/uaccess.h:9, from include/linux/uaccess.h:11, from include/linux/crypto.h:21, from include/crypto/hash.h:11, from include/linux/uio.h:10, from include/linux/socket.h:8, from include/linux/compat.h:15, from arch/powerpc/kernel/asm-offsets.c:14: include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' {aka 'struct <anonymous> *'} but argument is of type 'int' 42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) | ~~~~~~~^~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:114: arch/powerpc/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1168: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 vim +237 arch/powerpc/include/asm/nohash/32/pgtable.h f281b5d50c87ec arch/powerpc/include/asm/pgtable-ppc32.h Aneesh Kumar K.V 2015-12-01 207 f281b5d50c87ec arch/powerpc/include/asm/pgtable-ppc32.h Aneesh Kumar K.V 2015-12-01 208 f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 209 /* c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 210 * PTE updates. This function is called whenever an existing c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 211 * valid PTE is updated. This does -not- include set_pte_at() c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 212 * which nowadays only sets a new PTE. c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 213 * c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 214 * Depending on the type of MMU, we may need to use atomic updates c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 215 * and the PTE may be either 32 or 64 bit wide. In the later case, c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 216 * when using atomic updates, only the low part of the PTE is c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 217 * accessed atomically. f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 218 * c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 219 * In addition, on 44x, we also maintain a global flag indicating c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 220 * that an executable user mapping was modified, which is needed c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 221 * to properly flush the virtually tagged instruction cache of c605782b1c3f1c arch/powerpc/include/asm/pgtable-ppc32.h Benjamin Herrenschmidt 2009-03-10 222 * those implementations. 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 223 * 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 224 * On the 8xx, the page tables are a bit special. For 16k pages, we have 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 225 * 4 identical entries. For 512k pages, we have 128 entries as if it was 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 226 * 4k pages, but they are flagged as 512k pages for the hardware. 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 227 * For other page sizes, we have a single entry in the table. f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 228 */ 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 229 #ifdef CONFIG_PPC_8xx 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 230 static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p, 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 231 unsigned long clr, unsigned long set, int huge) f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 232 { 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 233 pte_basic_t *entry = &p->pte; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 234 pte_basic_t old = pte_val(*p); 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 235 pte_basic_t new = (old & ~(pte_basic_t)clr) | set; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 236 int num, i; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 @237 pmd_t *pmd = pmd_offset(pud_offset(pgd_offset(mm, addr), addr), addr); 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 238 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 239 if (!huge) 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 240 num = PAGE_SIZE / SZ_4K; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 241 else if ((pmd_val(*pmd) & _PMD_PAGE_MASK) != _PMD_PAGE_8M) 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 242 num = SZ_512K / SZ_4K; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 243 else 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 244 num = 1; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 245 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 246 for (i = 0; i < num; i++, entry++, new += SZ_4K) 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 247 *entry = new; 1bc54c03117b90 include/asm-powerpc/pgtable-ppc32.h Benjamin Herrenschmidt 2008-07-08 248 f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 249 return old; f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 250 } 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 251 #else 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 252 static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p, 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 253 unsigned long clr, unsigned long set, int huge) f88df14b1f15cd include/asm-powerpc/pgtable-ppc32.h David Gibson 2007-04-30 254 { 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 255 pte_basic_t old = pte_val(*p); 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 256 pte_basic_t new = (old & ~(pte_basic_t)clr) | set; 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 257 1158b8c9d53efa arch/powerpc/include/asm/nohash/32/pgtable.h Andrew Morton 2020-06-04 258 *p = __pte(new); 1bc54c03117b90 include/asm-powerpc/pgtable-ppc32.h Benjamin Herrenschmidt 2008-07-08 259 :::::: The code at line 237 was first introduced by commit :::::: 1158b8c9d53efaf6059d77ccc8cf9b9bcdab8437 linux-next :::::: TO: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> :::::: CC: Johannes Weiner <hannes@xxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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