Hi Stanislav, kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master] [also build test ERROR on v6.18-rc1 next-20251015] [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/Stanislav-Kinsburskii/Drivers-hv-Refactor-and-rename-memory-region-handling-functions/20251016-082944 base: linus/master patch link: https://lore.kernel.org/r/176057443695.74314.10584965103467299030.stgit%40skinsburskii-cloud-desktop.internal.cloudapp.net patch subject: [PATCH v5 5/5] Drivers: hv: Add support for movable memory regions config: x86_64-buildonly-randconfig-002-20251016 (https://download.01.org/0day-ci/archive/20251016/[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/20251016/[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 errors (new ones prefixed by >>): mm/hmm.c: In function 'hmm_range_fault': >> mm/hmm.c:667:21: error: implicit declaration of function >> 'mmu_interval_check_retry' [-Wimplicit-function-declaration] 667 | if (mmu_interval_check_retry(range->notifier, | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/mmu_interval_check_retry +667 mm/hmm.c 7b86ac3371b70c Christoph Hellwig 2019-08-28 634 9a4903e49e495b Christoph Hellwig 2019-07-25 635 /** 9a4903e49e495b Christoph Hellwig 2019-07-25 636 * hmm_range_fault - try to fault some address in a virtual address range f970b977e068aa Jason Gunthorpe 2020-03-27 637 * @range: argument structure 9a4903e49e495b Christoph Hellwig 2019-07-25 638 * be957c886d92aa Jason Gunthorpe 2020-05-01 639 * Returns 0 on success or one of the following error codes: 73231612dc7c90 Jérôme Glisse 2019-05-13 640 * 9a4903e49e495b Christoph Hellwig 2019-07-25 641 * -EINVAL: Invalid arguments or mm or virtual address is in an invalid vma 9a4903e49e495b Christoph Hellwig 2019-07-25 642 * (e.g., device file vma). 73231612dc7c90 Jérôme Glisse 2019-05-13 643 * -ENOMEM: Out of memory. 9a4903e49e495b Christoph Hellwig 2019-07-25 644 * -EPERM: Invalid permission (e.g., asking for write and range is read 9a4903e49e495b Christoph Hellwig 2019-07-25 645 * only). 9a4903e49e495b Christoph Hellwig 2019-07-25 646 * -EBUSY: The range has been invalidated and the caller needs to wait for 9a4903e49e495b Christoph Hellwig 2019-07-25 647 * the invalidation to finish. f970b977e068aa Jason Gunthorpe 2020-03-27 648 * -EFAULT: A page was requested to be valid and could not be made valid f970b977e068aa Jason Gunthorpe 2020-03-27 649 * ie it has no backing VMA or it is illegal to access 74eee180b935fc Jérôme Glisse 2017-09-08 650 * f970b977e068aa Jason Gunthorpe 2020-03-27 651 * This is similar to get_user_pages(), except that it can read the page tables f970b977e068aa Jason Gunthorpe 2020-03-27 652 * without mutating them (ie causing faults). 74eee180b935fc Jérôme Glisse 2017-09-08 653 */ be957c886d92aa Jason Gunthorpe 2020-05-01 654 int hmm_range_fault(struct hmm_range *range) 74eee180b935fc Jérôme Glisse 2017-09-08 655 { d28c2c9a487708 Ralph Campbell 2019-11-04 656 struct hmm_vma_walk hmm_vma_walk = { d28c2c9a487708 Ralph Campbell 2019-11-04 657 .range = range, d28c2c9a487708 Ralph Campbell 2019-11-04 658 .last = range->start, d28c2c9a487708 Ralph Campbell 2019-11-04 659 }; a22dd506400d0f Jason Gunthorpe 2019-11-12 660 struct mm_struct *mm = range->notifier->mm; 74eee180b935fc Jérôme Glisse 2017-09-08 661 int ret; 74eee180b935fc Jérôme Glisse 2017-09-08 662 42fc541404f249 Michel Lespinasse 2020-06-08 663 mmap_assert_locked(mm); 74eee180b935fc Jérôme Glisse 2017-09-08 664 a3e0d41c2b1f86 Jérôme Glisse 2019-05-13 665 do { a3e0d41c2b1f86 Jérôme Glisse 2019-05-13 666 /* If range is no longer valid force retry. */ a22dd506400d0f Jason Gunthorpe 2019-11-12 @667 if (mmu_interval_check_retry(range->notifier, a22dd506400d0f Jason Gunthorpe 2019-11-12 668 range->notifier_seq)) 2bcbeaefde2f03 Christoph Hellwig 2019-07-24 669 return -EBUSY; d28c2c9a487708 Ralph Campbell 2019-11-04 670 ret = walk_page_range(mm, hmm_vma_walk.last, range->end, 7b86ac3371b70c Christoph Hellwig 2019-08-28 671 &hmm_walk_ops, &hmm_vma_walk); be957c886d92aa Jason Gunthorpe 2020-05-01 672 /* be957c886d92aa Jason Gunthorpe 2020-05-01 673 * When -EBUSY is returned the loop restarts with be957c886d92aa Jason Gunthorpe 2020-05-01 674 * hmm_vma_walk.last set to an address that has not been stored be957c886d92aa Jason Gunthorpe 2020-05-01 675 * in pfns. All entries < last in the pfn array are set to their be957c886d92aa Jason Gunthorpe 2020-05-01 676 * output, and all >= are still at their input values. be957c886d92aa Jason Gunthorpe 2020-05-01 677 */ d28c2c9a487708 Ralph Campbell 2019-11-04 678 } while (ret == -EBUSY); 73231612dc7c90 Jérôme Glisse 2019-05-13 679 return ret; 74eee180b935fc Jérôme Glisse 2017-09-08 680 } 73231612dc7c90 Jérôme Glisse 2019-05-13 681 EXPORT_SYMBOL(hmm_range_fault); 8cad4713056612 Leon Romanovsky 2025-04-28 682 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
