On 01/09/2025 11:09, David Hildenbrand wrote:
On 30.08.25 20:56, kernel test robot wrote:
Hi Nikita,
kernel test robot noticed the following build errors:
[auto build test ERROR on a6ad54137af92535cfe32e19e5f3bc1bb7dbd383]
url: https://github.com/intel-lab-lkp/linux/commits/Kalyazin-
Nikita/KVM-guest_memfd-add-generic-population-via-write/20250828-233437
base: a6ad54137af92535cfe32e19e5f3bc1bb7dbd383
patch link: https://lore.kernel.org/r/20250828153049.3922-2-
kalyazin%40amazon.com
patch subject: [PATCH v4 1/2] KVM: guest_memfd: add generic population
via write
config: x86_64-randconfig-001-20250830 (https://download.01.org/0day-
ci/archive/20250831/202508310252.e5ufh1hx-...@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project
87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/
archive/20250831/202508310252.e5ufh1hx-...@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 <l...@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508310252.E5uFh1hx-
l...@intel.com/
All errors (new ones prefixed by >>, old ones prefixed by <<):
ERROR: modpost: "filemap_remove_folio" [arch/x86/kvm/kvm.ko] undefined!
Right, that one is not exported.
Indeed. Having a look at other .write_end implementations, it looks
like the convention is zeroing the uncopied part instead of trying to
remove the folio from the cache. Will do it in the next version.
--
Cheers
David / dhildenb
