search for: migrate_pfn_migr

...clude/linux/migrate.h > index 8b46cfdb1a0e..ba74ef5a7702 100644 > --- a/include/linux/migrate.h > +++ b/include/linux/migrate.h > @@ -165,7 +165,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, > #define MIGRATE_PFN_VALID (1UL << 0) > #define MIGRATE_PFN_MIGRATE (1UL << 1) > #define MIGRATE_PFN_LOCKED (1UL << 2) > -#define MIGRATE_PFN_WRITE (1UL << 3) > #define MIGRATE_PFN_SHIFT 6 > > static inline struct page *migrate_pfn_to_page(unsigned long mpfn) > diff --git a/mm/migrate.c b/mm/migrate.c > index 74735...

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

...pages - * - * - * The alloc_and_copy() callback happens once all source pages have been locked, - * unmapped and checked (checked whether pinned or not). All pages that can be - * migrated will have an entry in the src array set with the pfn value of the - * page and with the MIGRATE_PFN_VALID and MIGRATE_PFN_MIGRATE flag set (other - * flags might be set but should be ignored by the callback). - * - * The alloc_and_copy() callback can then allocate destination memory and copy - * source memory to it for all those entries (ie with MIGRATE_PFN_VALID and - * MIGRATE_PFN_MIGRATE flag set). Once these are alloca...

...pages - * - * - * The alloc_and_copy() callback happens once all source pages have been locked, - * unmapped and checked (checked whether pinned or not). All pages that can be - * migrated will have an entry in the src array set with the pfn value of the - * page and with the MIGRATE_PFN_VALID and MIGRATE_PFN_MIGRATE flag set (other - * flags might be set but should be ignored by the callback). - * - * The alloc_and_copy() callback can then allocate destination memory and copy - * source memory to it for all those entries (ie with MIGRATE_PFN_VALID and - * MIGRATE_PFN_MIGRATE flag set). Once these are alloca...

...- * The alloc_and_copy() callback happens once all source pages have been locked, > - * unmapped and checked (checked whether pinned or not). All pages that can be > - * migrated will have an entry in the src array set with the pfn value of the > - * page and with the MIGRATE_PFN_VALID and MIGRATE_PFN_MIGRATE flag set (other > - * flags might be set but should be ignored by the callback). > - * > - * The alloc_and_copy() callback can then allocate destination memory and copy > - * source memory to it for all those entries (ie with MIGRATE_PFN_VALID and > - * MIGRATE_PFN_MIGRATE flag se...

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: 7 files changed, 282 insertions(+), 614 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git

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: 5 files changed, 281 insertions(+), 607 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git

...t a/include/linux/migrate.h b/include/linux/migrate.h index 8b46cfdb1a0e..ba74ef5a7702 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -165,7 +165,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_VALID (1UL << 0) #define MIGRATE_PFN_MIGRATE (1UL << 1) #define MIGRATE_PFN_LOCKED (1UL << 2) -#define MIGRATE_PFN_WRITE (1UL << 3) #define MIGRATE_PFN_SHIFT 6 static inline struct page *migrate_pfn_to_page(unsigned long mpfn) diff --git a/mm/migrate.c b/mm/migrate.c index 74735256e260..724f92dcc31b 100644 --- a/mm/m...

...PGMAP_ALTMAP_VALID (1 << 0) diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 0f8d1583fa8e..92179bf360d1 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -144,6 +144,7 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_MIGRATE (1UL << 1) #define MIGRATE_PFN_LOCKED (1UL << 2) #define MIGRATE_PFN_WRITE (1UL << 3) +#define MIGRATE_PFN_COMPOUND (1UL << 4) #define MIGRATE_PFN_SHIFT 6 static inline struct page *migrate_pfn_to_page(unsigned long mpfn) @@ -161,6 +162,7 @@ static inline unsigned l...

...include/linux/migrate.h > index 8b46cfdb1a0e..ba74ef5a7702 100644 > --- a/include/linux/migrate.h > +++ b/include/linux/migrate.h > @@ -165,7 +165,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, > #define MIGRATE_PFN_VALID (1UL << 0) > #define MIGRATE_PFN_MIGRATE (1UL << 1) > #define MIGRATE_PFN_LOCKED (1UL << 2) > -#define MIGRATE_PFN_WRITE (1UL << 3) > #define MIGRATE_PFN_SHIFT 6 > > static inline struct page *migrate_pfn_to_page(unsigned long mpfn) > diff --git a/mm/migrate.c b/mm/migrate.c > index 74735256e...

...dr, PAGE_SIZE, DMA_BIDIRECTIONAL); diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 229153c2c496..8b46cfdb1a0e 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -166,7 +166,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_MIGRATE (1UL << 1) #define MIGRATE_PFN_LOCKED (1UL << 2) #define MIGRATE_PFN_WRITE (1UL << 3) -#define MIGRATE_PFN_DEVICE (1UL << 4) #define MIGRATE_PFN_SHIFT 6 static inline struct page *migrate_pfn_to_page(unsigned long mpfn) diff --git a/mm/migrate.c b/mm/migrate.c index...

...dr, PAGE_SIZE, DMA_BIDIRECTIONAL); diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 1e67dcfd318f..72120061b7d4 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -166,7 +166,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_MIGRATE (1UL << 1) #define MIGRATE_PFN_LOCKED (1UL << 2) #define MIGRATE_PFN_WRITE (1UL << 3) -#define MIGRATE_PFN_DEVICE (1UL << 4) #define MIGRATE_PFN_SHIFT 6 static inline struct page *migrate_pfn_to_page(unsigned long mpfn) diff --git a/mm/migrate.c b/mm/migrate.c index...

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

...; - int ret; > - > - > - /* First allocate new memory */ > - for (addr = start, i = 0; addr < end; addr += PAGE_SIZE, i++) { > - struct page *dpage, *spage; > - > - dst_pfns[i] = 0; > - spage = migrate_pfn_to_page(src_pfns[i]); > - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) > - continue; > + struct page *dpage, *spage; > > - dpage = alloc_page_vma(GFP_HIGHUSER, vma, addr); > - if (!dpage) { > - dst_pfns[i] = MIGRATE_PFN_ERROR; > - continue; > - } > - lock_page(dpage); > - > - dst_pfns[i] = migrate_pfn(page_to_pfn(dpag...

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

...ct page *dpage, *spage; + vm_fault_t ret = VM_FAULT_SIGBUS; - /* First allocate new memory */ - for (addr = start, i = 0; addr < end; addr += PAGE_SIZE, i++) { - struct page *dpage, *spage; - - dst_pfns[i] = 0; - spage = migrate_pfn_to_page(src_pfns[i]); - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) - continue; - - dpage = alloc_page_vma(GFP_HIGHUSER, vma, addr); - if (!dpage) { - dst_pfns[i] = MIGRATE_PFN_ERROR; - continue; - } - lock_page(dpage); - - dst_pfns[i] = migrate_pfn(page_to_pfn(dpage)) | - MIGRATE_PFN_LOCKED; - npages++; - } + spage = migrate_pfn_to_page(ar...

...i, npages = 0; - nouveau_migrate_copy_t copy; - int ret; - - - /* First allocate new memory */ - for (addr = start, i = 0; addr < end; addr += PAGE_SIZE, i++) { - struct page *dpage, *spage; - - dst_pfns[i] = 0; - spage = migrate_pfn_to_page(src_pfns[i]); - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) - continue; + struct page *dpage, *spage; - dpage = alloc_page_vma(GFP_HIGHUSER, vma, addr); - if (!dpage) { - dst_pfns[i] = MIGRATE_PFN_ERROR; - continue; - } - lock_page(dpage); - - dst_pfns[i] = migrate_pfn(page_to_pfn(dpage)) | - MIGRATE_PFN_LOCKED; - npages++; - } +...

...error path below. > > - /* First allocate new memory */ > - for (addr = start, i = 0; addr < end; addr += PAGE_SIZE, i++) { > - struct page *dpage, *spage; > - > - dst_pfns[i] = 0; > - spage = migrate_pfn_to_page(src_pfns[i]); > - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) > - continue; > - > - dpage = alloc_page_vma(GFP_HIGHUSER, vma, addr); > - if (!dpage) { > - dst_pfns[i] = MIGRATE_PFN_ERROR; > - continue; > - } > - lock_page(dpage); > - > - dst_pfns[i] = migrate_pfn(page_to_pfn(dpage)) | > - MIGRATE_PFN_LO...

...r, i, npages = 0; - nouveau_migrate_copy_t copy; - int ret; - - /* First allocate new memory */ - for (addr = start, i = 0; addr < end; addr += PAGE_SIZE, i++) { - struct page *dpage, *spage; - - dst_pfns[i] = 0; - spage = migrate_pfn_to_page(src_pfns[i]); - if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE)) - continue; - - dpage = nouveau_dmem_page_alloc_locked(drm); - if (!dpage) - continue; - - dst_pfns[i] = migrate_pfn(page_to_pfn(dpage)) | - MIGRATE_PFN_LOCKED | - MIGRATE_PFN_DEVICE; - npages++; - } - - if (!npages) - return; - - /* Allocate storage for DMA addresses,...

...g addr, i; - bool notified = false; for (i = 0, addr = start; i < npages; addr += PAGE_SIZE, i++) { struct page *newpage = migrate_pfn_to_page(migrate->dst[i]); @@ -2895,16 +2893,6 @@ void migrate_vma_pages(struct migrate_vma *migrate) if (!page) { if (!(migrate->src[i] & MIGRATE_PFN_MIGRATE)) continue; - if (!notified) { - notified = true; - - mmu_notifier_range_init(&range, - MMU_NOTIFY_CLEAR, 0, - NULL, - migrate->vma->vm_mm, - addr, migrate->end); - mmu_notifier_invalidate_range_start(&range); - } migrate_vma_insert_...