Re: [sj:damon/next 106/145] mm/damon/core.c:3434:(.text.damon_set_region_system_rams_default+0x138): undefined reference to `__udivdi3'

Re: [sj:damon/next 106/145] mm/damon/core.c:3434:(.text.damon_set_region_system_rams_default+0x138): undefined reference to `__udivdi3'

[SeongJae Park]

On Wed, 25 Feb 2026 16:41:28 +0800 kernel test robot <lkp@intel.com> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
> head:   2f2b1e72c03fda4cb12c7027c47840d955d77820
> commit: 38a56aedfeccddd0f844633d1b4c55e2e12c4258 [106/145] mm/damon/lru_sort: cover all system rams
> config: powerpc-randconfig-001-20260225 (https://download.01.org/0day-ci/archive/20260225/202602251636.PpfZGJU3-lkp@intel.com/config)
> compiler: powerpc-linux-gcc (GCC) 12.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260225/202602251636.PpfZGJU3-lkp@intel.com/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 <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202602251636.PpfZGJU3-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    powerpc-linux-ld: mm/damon/core.o: in function `damon_find_system_ram_range':
> >> mm/damon/core.c:3434:(.text.damon_set_region_system_rams_default+0x138): undefined reference to `__udivdi3'
> >> powerpc-linux-ld: mm/damon/core.c:3435:(.text.damon_set_region_system_rams_default+0x164): undefined reference to `__udivdi3'

Thank you for this report!  I just pushed a fix to damon/next.  I'm currently
in travel with limited testing environment, so I was unable to reproduce the
issue, though.  Please let me know if the issue is not yet fixed and bother
you by any chance!


Thanks,
SJ

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