search for: pmd_migration_entry_wait

...pfns; unsigned long addr = start, i; pte_t *ptep; pmd_t pmd; - again: pmd = READ_ONCE(*pmdp); if (pmd_none(pmd)) @@ -648,7 +644,7 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp, 0, &fault, &write_fault); if (fault || write_fault) { hmm_vma_walk->last = addr; - pmd_migration_entry_wait(vma->vm_mm, pmdp); + pmd_migration_entry_wait(walk->mm, pmdp); return -EBUSY; } return 0; @@ -657,11 +653,11 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp, if (pmd_devmap(pmd) || pmd_trans_huge(pmd)) { /* - * No need to take pmd_lock here, even if some other threads + * No...

...grate.c | 19 ++++++++++++------- > > 1 file changed, 12 insertions(+), 7 deletions(-) > > > > diff --git a/mm/migrate.c b/mm/migrate.c > > index 2975f0c4d7cf..2e2f41572066 100644 > > --- a/mm/migrate.c > > +++ b/mm/migrate.c > > @@ -336,13 +336,18 @@ void pmd_migration_entry_wait(struct mm_struct *mm, pmd_t *pmd) > > } > > #endif > > > > -static int expected_page_refs(struct address_space *mapping, struct page *page) > > +static int folio_expected_refs(struct address_space *mapping, > > + struct folio *folio) > > { > > -...

...grate.c | 19 ++++++++++++------- > > 1 file changed, 12 insertions(+), 7 deletions(-) > > > > diff --git a/mm/migrate.c b/mm/migrate.c > > index 2975f0c4d7cf..2e2f41572066 100644 > > --- a/mm/migrate.c > > +++ b/mm/migrate.c > > @@ -336,13 +336,18 @@ void pmd_migration_entry_wait(struct mm_struct *mm, pmd_t *pmd) > > } > > #endif > > > > -static int expected_page_refs(struct address_space *mapping, struct page *page) > > +static int folio_expected_refs(struct address_space *mapping, > > + struct folio *folio) > > { > > -...

...ge(entry); + return vmf.page->pgmap->ops->migrate_to_ram(&vmf); + } VM_BUG_ON(thp_migration_supported() && - !is_pmd_migration_entry(orig_pmd)); - if (is_pmd_migration_entry(orig_pmd)) + !is_migration_entry(entry)); + if (is_migration_entry(entry)) pmd_migration_entry_wait(mm, vmf.pmd); return 0; } diff --git a/mm/memremap.c b/mm/memremap.c index 03e38b7a38f1..4231054188b4 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -132,8 +132,13 @@ void memunmap_pages(struct dev_pagemap *pgmap) int nid; dev_pagemap_kill(pgmap); - for_each_device_pfn(pfn, pgmap) -...

Here are seven more patches for things I found to clean up. This was based on top of Christoph's seven patches: "hmm_range_fault related fixes and legacy API removal v3". I assume this will go into Jason's tree since there will likely be more HMM changes in this cycle. Changes from v1 to v2: Added AMD GPU to hmm_update removal. Added 2 patches from Christoph. Added 2 patches as

...;pgmap->ops->migrate_to_ram(&vmf); > + } > VM_BUG_ON(thp_migration_supported() && > - !is_pmd_migration_entry(orig_pmd)); > - if (is_pmd_migration_entry(orig_pmd)) > + !is_migration_entry(entry)); > + if (is_migration_entry(entry)) > pmd_migration_entry_wait(mm, vmf.pmd); > return 0; > } > diff --git a/mm/memremap.c b/mm/memremap.c > index 03e38b7a38f1..4231054188b4 100644 > --- a/mm/memremap.c > +++ b/mm/memremap.c > @@ -132,8 +132,13 @@ void memunmap_pages(struct dev_pagemap *pgmap) > int nid; > > dev_pagemap_...

...ge(entry); + return vmf.page->pgmap->ops->migrate_to_ram(&vmf); + } VM_BUG_ON(thp_migration_supported() && - !is_pmd_migration_entry(orig_pmd)); - if (is_pmd_migration_entry(orig_pmd)) + !is_migration_entry(entry)); + if (is_migration_entry(entry)) pmd_migration_entry_wait(mm, vmf.pmd); return 0; } diff --git a/mm/memremap.c b/mm/memremap.c index d72ce30da94e..8b4e6f12e58f 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -92,7 +92,7 @@ static unsigned long pfn_next(unsigned long pfn) { if (pfn % 1024 == 0) cond_resched(); - return pfn + 1; + return pfn...

...*pmdp, return hmm_vma_walk_hole(start, end, -1, walk); if (thp_migration_supported() && is_pmd_migration_entry(pmd)) { - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) { + if (hmm_range_need_fault(hmm_vma_walk, hmm_pfns, npages, 0)) { hmm_vma_walk->last = addr; pmd_migration_entry_wait(walk->mm, pmdp); return -EBUSY; } - return hmm_pfns_fill(start, end, range, HMM_PFN_NONE); + return hmm_pfns_fill(start, end, range, 0); } if (!pmd_present(pmd)) { - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) + if (hmm_range_need_fault(hmm_vma_walk, hmm_pfns, npage...

...*pmdp, return hmm_vma_walk_hole(start, end, -1, walk); if (thp_migration_supported() && is_pmd_migration_entry(pmd)) { - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) { + if (hmm_range_need_fault(hmm_vma_walk, hmm_pfns, npages, 0)) { hmm_vma_walk->last = addr; pmd_migration_entry_wait(walk->mm, pmdp); return -EBUSY; } - return hmm_pfns_fill(start, end, range, HMM_PFN_NONE); + return hmm_pfns_fill(start, end, range, 0); } if (!pmd_present(pmd)) { - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) + if (hmm_range_need_fault(hmm_vma_walk, hmm_pfns, npage...

...hole(start, end, -1, walk); > > if (thp_migration_supported() && is_pmd_migration_entry(pmd)) { > - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) { > + if (hmm_range_need_fault(hmm_vma_walk, hmm_pfns, npages, 0)) { > hmm_vma_walk->last = addr; > pmd_migration_entry_wait(walk->mm, pmdp); > return -EBUSY; > } > - return hmm_pfns_fill(start, end, range, HMM_PFN_NONE); > + return hmm_pfns_fill(start, end, range, 0); > } > > if (!pmd_present(pmd)) { > - if (hmm_range_need_fault(hmm_vma_walk, pfns, npages, 0)) > + if (hmm_r...

From: Jason Gunthorpe <jgg at mellanox.com> The API is a bit complicated for the uses we actually have, and disucssions for simplifying have come up a number of times. This small series removes the customizable pfn format and simplifies the return code of hmm_range_fault() All the drivers are adjusted to process in the simplified format. I would appreciated tested-by's for the two

These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM self tests. Patch 7-8 prepare nouveau for the meat of this series which adds support and testing for compound page mapping of system memory (patches 9-11) and compound page migration to device private memory (patches 12-16). Since these changes are split

From: Jason Gunthorpe <jgg at mellanox.com> The API is a bit complicated for the uses we actually have, and disucssions for simplifying have come up a number of times. This small series removes the customizable pfn format and simplifies the return code of hmm_range_fault() All the drivers are adjusted to process in the simplified format. I would appreciated tested-by's for the two

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan