Hi Mike, I love your patch! Yet something to improve: [auto build test ERROR on hnaz-linux-mm/master] url: https://github.com/0day-ci/linux/commits/Mike-Kravetz/mm-hugetlb-fix-dissolve_free_huge_page-use-of-tail-head-page/20210528-071337 base: https://github.com/hnaz/linux-mm master config: m68k-randconfig-c023-20210528 (attached as .config) compiler: m68k-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 # https://github.com/0day-ci/linux/commit/b26b543d785ced93e7db05483ddc20e8fa45059e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mike-Kravetz/mm-hugetlb-fix-dissolve_free_huge_page-use-of-tail-head-page/20210528-071337 git checkout b26b543d785ced93e7db05483ddc20e8fa45059e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): arch/m68k/math-emu/fp_arith.c:310:1: warning: no previous prototype for 'fp_fsglmul' [-Wmissing-prototypes] 310 | fp_fsglmul(struct fp_ext *dest, struct fp_ext *src) | ^~~~~~~~~~ arch/m68k/math-emu/fp_arith.c:367:1: warning: no previous prototype for 'fp_fsgldiv' [-Wmissing-prototypes] 367 | fp_fsgldiv(struct fp_ext *dest, struct fp_ext *src) | ^~~~~~~~~~ {standard input}: Assembler messages: {standard input}:333: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `sub.b %d2,%d3' ignored {standard input}:465: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `add.b %d3,%d2' ignored {standard input}:511: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `sub.b %d3,%d2' ignored {standard input}:670: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a4){%d3,#8},%d3' ignored {standard input}:712: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d2,#8},%d2' ignored >> {standard input}:862: Error: operands mismatch -- statement `mulu.l 4(%a3),%d4:%d0' ignored >> {standard input}:862: Error: operands mismatch -- statement `mulu.l 8(%a3),%d1:%d3' ignored {standard input}:862: Error: operands mismatch -- statement `mulu.l 4(%a3),%d6:%d5' ignored {standard input}:868: Error: operands mismatch -- statement `mulu.l 8(%a3),%d7:%d5' ignored {standard input}:876: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `roxl.l #1,%d0' ignored {standard input}:879: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `roxl.l #1,%d4' ignored {standard input}:979: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d0{#0,#32},%d1' ignored {standard input}:996: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d1{#0,#32},%d0' ignored {standard input}:1083: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d3{#0,#32},%d0' ignored {standard input}:1093: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d3{#0,#32},%d1' ignored {standard input}:1167: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d0,#8},%d0' ignored >> {standard input}:1317: Error: operands mismatch -- statement `divu.l %d0,%d4:%d3' ignored {standard input}:1326: Error: operands mismatch -- statement `divu.l %d2,%d4:%d1' ignored {standard input}:1330: Error: operands mismatch -- statement `mulu.l %d1,%d3:%d0' ignored >> {standard input}:1333: Error: operands mismatch -- statement `mulu.l %d3,%d7:%d2' ignored {standard input}:1338: Error: operands mismatch -- statement `mulu.l 4(%a4),%d0:%d1' ignored {standard input}:1373: Error: operands mismatch -- statement `divu.l %d2,%d4:%d1' ignored {standard input}:1373: Error: operands mismatch -- statement `mulu.l %d1,%d3:%d0' ignored {standard input}:1379: Error: operands mismatch -- statement `mulu.l %d3,%d7:%d2' ignored {standard input}:1379: Error: operands mismatch -- statement `mulu.l 4(%a4),%d0:%d1' ignored {standard input}:1496: Error: operands mismatch -- statement `divu.l %d0,%d4:%d3' ignored {standard input}:1504: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d1{#0,#32},%d2' ignored {standard input}:1522: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d0{#0,#32},%d1' ignored {standard input}:1577: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `roxr.l #1,%d1' ignored {standard input}:1581: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `roxr.l #1,%d2' ignored {standard input}:1586: Error: invalid instruction for this architecture; needs 68000 or higher (68000 [68ec000, 68hc000, 68hc001, 68008, 68302, 68306, 68307, 68322, 68356], 68010, 68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060], cpu32 [68330, 68331, 68332, 68333, 68334, 68336, 68340, 68341, 68349, 68360], fidoa [fido]) -- statement `roxr.l #1,%d0' ignored {standard input}:1599: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d2{#0,#32},%d1' ignored {standard input}:1609: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfffo %d0{#0,#32},%d2' ignored {standard input}:1684: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d0,#8},%d0' ignored {standard input}:1859: Error: operands mismatch -- statement `mulu.l %d3,%d3:%d0' ignored {standard input}:2070: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d0,#8},%d0' ignored {standard input}:2200: Error: operands mismatch -- statement `divu.l 4(%a4),%d0:%d2' ignored {standard input}:2283: Error: operands mismatch -- statement `divu.l %d2,%d0:%d3' ignored {standard input}:2378: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d0,#8},%d0' ignored {standard input}:2705: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `bfextu 4(%a3){%d1,#8},%d1' ignored --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org