search for: pte_soft_dirty

...t_and_clear(mm, addr, ptep); > > /* Setup special migration page table entry */ > - entry = make_migration_entry(page, mpfn & > - MIGRATE_PFN_WRITE); > + entry = make_migration_entry(page, writable); > swp_pte = swp_entry_to_pte(entry); > if (pte_soft_dirty(pte)) > swp_pte = pte_swp_mksoft_dirty(swp_pte); > MIGRATE_PFN_WRITE may mot being used but that seems like a bug to me. If a page is migrated to device memory, it could be mapped at the same time to avoid a device page fault but it would need the flag to know whether to map it RW or...

...ma_collect_pmd(pmd_t *pmdp, ptep_get_and_clear(mm, addr, ptep); /* Setup special migration page table entry */ - entry = make_migration_entry(page, mpfn & - MIGRATE_PFN_WRITE); + entry = make_migration_entry(page, writable); swp_pte = swp_entry_to_pte(entry); if (pte_soft_dirty(pte)) swp_pte = pte_swp_mksoft_dirty(swp_pte); -- 2.20.1

...p_get_and_clear(mm, addr, ptep); > > /* Setup special migration page table entry */ > - entry = make_migration_entry(page, mpfn & > - MIGRATE_PFN_WRITE); > + entry = make_migration_entry(page, writable); > swp_pte = swp_entry_to_pte(entry); > if (pte_soft_dirty(pte)) > swp_pte = pte_swp_mksoft_dirty(swp_pte); > -- > 2.20.1 >

Hi Jérôme, Ben and Jason, below is a series against the hmm tree which starts revamping the migrate_vma functionality. The prime idea is to export three slightly lower level functions and thus avoid the need for migrate_vma_ops callbacks. Diffstat: 4 files changed, 285 insertions(+), 602 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git