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 8PcQGctv 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 11/15/25 11:51, Andrew Morton wrote: > On Sat, 15 Nov 2025 11:28:35 +1100 Balbir Singh wrote: > >> Follow the pattern used in remove_migration_pte() in >> remove_migration_pmd(). Process the migration entries and if the entry >> type is device private, override the pmde with a device private entry >> and set the soft dirty and uffd_wp bits with the pmd_swp_mksoft_dirty >> and pmd_swp_mkuffd_wp >> >> ... >> >> This fixup should be squashed into the patch "mm/rmap: extend rmap and >> migration support" of mm/mm-unstable >> > > OK. After fixing up > mm-replace-pmd_to_swp_entry-with-softleaf_from_pmd.patch, mm.git's > mm/huge_memory.c has the below. Please double-check. > > > void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new) > { > struct folio *folio = page_folio(new); > struct vm_area_struct *vma = pvmw->vma; > struct mm_struct *mm = vma->vm_mm; > unsigned long address = pvmw->address; > unsigned long haddr = address & HPAGE_PMD_MASK; > pmd_t pmde; > softleaf_t entry; > > if (!(pvmw->pmd && !pvmw->pte)) > return; > > entry = softleaf_from_pmd(*pvmw->pmd); > folio_get(folio); > pmde = folio_mk_pmd(folio, READ_ONCE(vma->vm_page_prot)); > > if (pmd_swp_soft_dirty(*pvmw->pmd)) > pmde = pmd_mksoft_dirty(pmde); > if (softleaf_is_migration_write(entry)) > pmde = pmd_mkwrite(pmde, vma); > if (pmd_swp_uffd_wp(*pvmw->pmd)) > pmde = pmd_mkuffd_wp(pmde); > if (!softleaf_is_migration_young(entry)) > pmde = pmd_mkold(pmde); > /* NOTE: this may contain setting soft-dirty on some archs */ > if (folio_test_dirty(folio) && softleaf_is_migration_dirty(entry)) > pmde = pmd_mkdirty(pmde); > > if (folio_is_device_private(folio)) { > swp_entry_t entry; > > if (pmd_write(pmde)) > entry = make_writable_device_private_entry( > page_to_pfn(new)); > else > entry = make_readable_device_private_entry( > page_to_pfn(new)); > pmde = swp_entry_to_pmd(entry); > > if (pmd_swp_soft_dirty(*pvmw->pmd)) > pmde = pmd_swp_mksoft_dirty(pmde); > if (pmd_swp_uffd_wp(*pvmw->pmd)) > pmde = pmd_swp_mkuffd_wp(pmde); > } > > if (folio_test_anon(folio)) { > rmap_t rmap_flags = RMAP_NONE; > > if (!softleaf_is_migration_read(entry)) > rmap_flags |= RMAP_EXCLUSIVE; > > folio_add_anon_rmap_pmd(folio, new, vma, haddr, rmap_flags); > } else { > folio_add_file_rmap_pmd(folio, new, vma); > } > VM_BUG_ON(pmd_write(pmde) && folio_test_anon(folio) && !PageAnonExclusive(new)); > set_pmd_at(mm, haddr, pvmw->pmd, pmde); > > /* No need to invalidate - it was non-present before */ > update_mmu_cache_pmd(vma, address, pvmw->pmd); > trace_remove_migration_pmd(address, pmd_val(pmde)); > } Thanks, Andrew! Looks good! Balbir