Hi Syed, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on 444fc5cde64330661bf59944c43844e7d4c2ccd8] url: https://github.com/0day-ci/linux/commits/Syed-Nayyar-Waris/Introduce-the-for_each_set_clump-macro/20200615-205729 base: 444fc5cde64330661bf59944c43844e7d4c2ccd8 config: sparc64-randconfig-s032-20200615 (attached as .config) compiler: sparc64-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-3-g55607964-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=sparc64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type >> unsigned long >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type >> unsigned long include/linux/bitmap.h:594:63: sparse: sparse: shift too big (64) for type unsigned long >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type >> unsigned long >> include/linux/bitmap.h:638:17: sparse: sparse: invalid access past the end >> of 'old' (8 8) vim +639 include/linux/bitmap.h 169c474fb22d8a William Breathitt Gray 2019-12-04 613 803024b6c8a375 Syed Nayyar Waris 2020-06-15 614 /** 803024b6c8a375 Syed Nayyar Waris 2020-06-15 615 * bitmap_set_value - set n-bit value within a memory region 803024b6c8a375 Syed Nayyar Waris 2020-06-15 616 * @map: address to the bitmap memory region 803024b6c8a375 Syed Nayyar Waris 2020-06-15 617 * @value: value of nbits 803024b6c8a375 Syed Nayyar Waris 2020-06-15 618 * @start: bit offset of the n-bit value 803024b6c8a375 Syed Nayyar Waris 2020-06-15 619 * @nbits: size of value in bits 803024b6c8a375 Syed Nayyar Waris 2020-06-15 620 */ 803024b6c8a375 Syed Nayyar Waris 2020-06-15 621 static inline void bitmap_set_value(unsigned long *map, 803024b6c8a375 Syed Nayyar Waris 2020-06-15 622 unsigned long value, 803024b6c8a375 Syed Nayyar Waris 2020-06-15 623 unsigned long start, unsigned long nbits) 803024b6c8a375 Syed Nayyar Waris 2020-06-15 624 { 803024b6c8a375 Syed Nayyar Waris 2020-06-15 625 const size_t index = BIT_WORD(start); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 626 const unsigned long offset = start % BITS_PER_LONG; 803024b6c8a375 Syed Nayyar Waris 2020-06-15 627 const unsigned long ceiling = roundup(start + 1, BITS_PER_LONG); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 628 const unsigned long space = ceiling - start; 803024b6c8a375 Syed Nayyar Waris 2020-06-15 629 803024b6c8a375 Syed Nayyar Waris 2020-06-15 630 value &= GENMASK(nbits - 1, 0); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 631 803024b6c8a375 Syed Nayyar Waris 2020-06-15 632 if (space >= nbits) { 803024b6c8a375 Syed Nayyar Waris 2020-06-15 633 map[index] &= ~(GENMASK(nbits + offset - 1, offset)); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 634 map[index] |= value << offset; 803024b6c8a375 Syed Nayyar Waris 2020-06-15 635 } else { 803024b6c8a375 Syed Nayyar Waris 2020-06-15 636 map[index] &= ~BITMAP_FIRST_WORD_MASK(start); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 637 map[index] |= value << offset; 803024b6c8a375 Syed Nayyar Waris 2020-06-15 @638 map[index + 1] &= ~BITMAP_LAST_WORD_MASK(start + nbits); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 @639 map[index + 1] |= (value >> space); 803024b6c8a375 Syed Nayyar Waris 2020-06-15 640 } 803024b6c8a375 Syed Nayyar Waris 2020-06-15 641 } 803024b6c8a375 Syed Nayyar Waris 2020-06-15 642 :::::: The code at line 639 was first introduced by commit :::::: 803024b6c8a375ba9e9e9467595d7d52d4f6a38e bitops: Introduce the for_each_set_clump macro :::::: TO: Syed Nayyar Waris <syednwa...@gmail.com> :::::: CC: 0day robot <l...@intel.com> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
