* Re: [PATCH v8 11/15] s390: Distinguish hardware and software PTEs
[not found] <c22ed0a2d9ff0f4fff69a17332a377c460d993dc.1791365932.git.agordeev@linux.ibm.com>
@ 2026-10-08 10:32 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-10-08 10:32 UTC (permalink / raw)
To: Alexander Gordeev, Gerald Schaefer, Heiko Carstens,
Christian Borntraeger, Vasily Gorbik, Claudio Imbrenda,
Andrey Ryabinin
Cc: llvm, oe-kbuild-all, Muhammad Usama Anjum, linux-s390, linux-mm,
linux-kernel, kasan-dev
Hi Alexander,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v7.3-rc6]
[cannot apply to akpm-mm/mm-everything s390/features kvms390/next next-20261006]
[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/Alexander-Gordeev/mm-introduce-hw_pte_t-for-PTE-table-storage/20261007-134144
base: linus/master
patch link: https://lore.kernel.org/r/c22ed0a2d9ff0f4fff69a17332a377c460d993dc.1791365932.git.agordeev%40linux.ibm.com
patch subject: [PATCH v8 11/15] s390: Distinguish hardware and software PTEs
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20261008/202610081806.wcWlNqQf-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 80cd965b6323b208519f8ab1d5ee86e4ea9862f4)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261008/202610081806.wcWlNqQf-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/202610081806.wcWlNqQf-lkp@intel.com/
All errors (new ones prefixed by >>):
>> mm/damon/vaddr.c:303:45: error: incompatible pointer types passing 'pte_t *' to parameter of type 'hw_pte_t *' (aka 'struct __hw_pte_t *') [-Wincompatible-pointer-types]
303 | *entry = huge_ptep_get_and_clear(mm, addr, pte, psize);
| ^~~
arch/s390/include/asm/hugetlb.h:34:40: note: passing argument to parameter 'ptep' here
34 | unsigned long addr, hw_pte_t *ptep,
| ^
mm/damon/vaddr.c:305:28: error: incompatible pointer types passing 'pte_t *' to parameter of type 'hw_pte_t *' (aka 'struct __hw_pte_t *') [-Wincompatible-pointer-types]
305 | set_huge_pte_at(mm, addr, pte, *entry, psize);
| ^~~
arch/s390/include/asm/hugetlb.h:22:18: note: passing argument to parameter 'ptep' here
22 | hw_pte_t *ptep, pte_t pte, unsigned long sz);
| ^
>> mm/damon/vaddr.c:318:40: error: incompatible pointer types passing 'hw_pte_t *' (aka 'struct __hw_pte_t *') to parameter of type 'pte_t *' [-Wincompatible-pointer-types]
318 | referenced = damon_hugetlb_ptep_mkold(pte, mm, vma, addr, &entry);
| ^~~
mm/damon/vaddr.c:296:45: note: passing argument to parameter 'pte' here
296 | static bool damon_hugetlb_ptep_mkold(pte_t *pte, struct mm_struct *mm,
| ^
3 errors generated.
vim +303 mm/damon/vaddr.c
3f49584b262cf8 SeongJae Park 2021-09-07 294
49f4203aae06ba Baolin Wang 2022-01-14 295 #ifdef CONFIG_HUGETLB_PAGE
39c0ceedd54557 SJ Park 2026-09-07 296 static bool damon_hugetlb_ptep_mkold(pte_t *pte, struct mm_struct *mm,
39c0ceedd54557 SJ Park 2026-09-07 297 struct vm_area_struct *vma, unsigned long addr, pte_t *entry)
39c0ceedd54557 SJ Park 2026-09-07 298 {
39c0ceedd54557 SJ Park 2026-09-07 299 unsigned long psize = huge_page_size(hstate_vma(vma));
39c0ceedd54557 SJ Park 2026-09-07 300
39c0ceedd54557 SJ Park 2026-09-07 301 if (!pte_young(*entry))
39c0ceedd54557 SJ Park 2026-09-07 302 return false;
39c0ceedd54557 SJ Park 2026-09-07 @303 *entry = huge_ptep_get_and_clear(mm, addr, pte, psize);
39c0ceedd54557 SJ Park 2026-09-07 304 *entry = pte_mkold(*entry);
39c0ceedd54557 SJ Park 2026-09-07 305 set_huge_pte_at(mm, addr, pte, *entry, psize);
39c0ceedd54557 SJ Park 2026-09-07 306 return true;
39c0ceedd54557 SJ Park 2026-09-07 307 }
39c0ceedd54557 SJ Park 2026-09-07 308
6ecdfd6e16f5f4 Muhammad Usama Anjum 2026-10-07 309 static void damon_hugetlb_mkold(hw_pte_t *pte, struct mm_struct *mm,
49f4203aae06ba Baolin Wang 2022-01-14 310 struct vm_area_struct *vma, unsigned long addr)
49f4203aae06ba Baolin Wang 2022-01-14 311 {
49f4203aae06ba Baolin Wang 2022-01-14 312 bool referenced = false;
e6c0c03245b14d Christophe Leroy 2024-07-02 313 pte_t entry = huge_ptep_get(mm, addr, pte);
6b7cea90c82e10 Kefeng Wang 2022-12-30 314 struct folio *folio = pfn_folio(pte_pfn(entry));
49f4203aae06ba Baolin Wang 2022-01-14 315
6b7cea90c82e10 Kefeng Wang 2022-12-30 316 folio_get(folio);
49f4203aae06ba Baolin Wang 2022-01-14 317
39c0ceedd54557 SJ Park 2026-09-07 @318 referenced = damon_hugetlb_ptep_mkold(pte, mm, vma, addr, &entry);
49f4203aae06ba Baolin Wang 2022-01-14 319 if (mmu_notifier_clear_young(mm, addr,
49f4203aae06ba Baolin Wang 2022-01-14 320 addr + huge_page_size(hstate_vma(vma))))
49f4203aae06ba Baolin Wang 2022-01-14 321 referenced = true;
49f4203aae06ba Baolin Wang 2022-01-14 322
49f4203aae06ba Baolin Wang 2022-01-14 323 if (referenced)
6b7cea90c82e10 Kefeng Wang 2022-12-30 324 folio_set_young(folio);
49f4203aae06ba Baolin Wang 2022-01-14 325
6b7cea90c82e10 Kefeng Wang 2022-12-30 326 folio_set_idle(folio);
6b7cea90c82e10 Kefeng Wang 2022-12-30 327 folio_put(folio);
49f4203aae06ba Baolin Wang 2022-01-14 328 }
49f4203aae06ba Baolin Wang 2022-01-14 329
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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