Hi Nicolin, kernel test robot noticed the following build warnings:
[auto build test WARNING on shuah-kselftest/next] [also build test WARNING on shuah-kselftest/fixes linus/master v6.18-rc1 next-20251014] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Nicolin-Chen/iommufd-device-Move-sw_msi_start-from-igroup-to-idev/20251015-083453 base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next patch link: https://lore.kernel.org/r/6c36de14b00a3f06df3a602f18baf6b51fde429f.1760487869.git.nicolinc%40nvidia.com patch subject: [PATCH v2 4/7] iommufd: Add IOMMU_OPTION_SW_MSI_START/SIZE ioctls config: i386-buildonly-randconfig-002-20251015 (https://download.01.org/0day-ci/archive/20251015/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251015/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): In file included from include/linux/overflow.h:6, from include/linux/string.h:13, from include/linux/scatterlist.h:5, from include/linux/iommu.h:10, from drivers/iommu/iommufd/io_pagetable.c:13: drivers/iommu/iommufd/io_pagetable.c: In function 'iopt_table_enforce_dev_resv_regions': >> include/linux/limits.h:11:25: warning: conversion from 'long long unsigned >> int' to 'long unsigned int' changes value from '18446744073709551615' to >> '4294967295' [-Woverflow] 11 | #define PHYS_ADDR_MAX (~(phys_addr_t)0) | ^ drivers/iommu/iommufd/io_pagetable.c:1461:39: note: in expansion of macro 'PHYS_ADDR_MAX' 1461 | unsigned long start = PHYS_ADDR_MAX, last = 0; | ^~~~~~~~~~~~~ vim +11 include/linux/limits.h 54d50897d544c8 Masahiro Yamada 2019-03-07 8 54d50897d544c8 Masahiro Yamada 2019-03-07 9 #define SIZE_MAX (~(size_t)0) dabba87229411a Pasha Tatashin 2022-05-27 10 #define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 @11 #define PHYS_ADDR_MAX (~(phys_addr_t)0) 54d50897d544c8 Masahiro Yamada 2019-03-07 12 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
