search for: migrate_pfn_write

On 7/29/19 7:28 AM, Christoph Hellwig wrote: > The MIGRATE_PFN_WRITE is only used locally in migrate_vma_collect_pmd, > where it can be replaced with a simple boolean local variable. > > Signed-off-by: Christoph Hellwig <hch at lst.de> Reviewed-by: Ralph Campbell <rcampbell at nvidia.com> > --- > include/linux/migrate.h | 1 - > m...

On Mon, Jul 29, 2019 at 05:28:43PM +0300, Christoph Hellwig wrote: > The MIGRATE_PFN_WRITE is only used locally in migrate_vma_collect_pmd, > where it can be replaced with a simple boolean local variable. > > Signed-off-by: Christoph Hellwig <hch at lst.de> NAK that flag is useful, for instance a anonymous vma might have some of its page read only even if the vma has wri...

The MIGRATE_PFN_WRITE is only used locally in migrate_vma_collect_pmd, where it can be replaced with a simple boolean local variable. Signed-off-by: Christoph Hellwig <hch at lst.de> --- include/linux/migrate.h | 1 - mm/migrate.c | 9 +++++---- 2 files changed, 5 insertions(+), 5 deletions(-) diff -...

On Mon, Jul 29, 2019 at 07:30:44PM -0400, Jerome Glisse wrote: > On Mon, Jul 29, 2019 at 05:28:43PM +0300, Christoph Hellwig wrote: > > The MIGRATE_PFN_WRITE is only used locally in migrate_vma_collect_pmd, > > where it can be replaced with a simple boolean local variable. > > > > Signed-off-by: Christoph Hellwig <hch at lst.de> > > NAK that flag is useful, for instance a anonymous vma might have > some of its page rea...

...mory and that page holds the pointer * to the mirror. */ + rpage = dpage->zone_device_data; rpage->zone_device_data = dmirror; *dst = migrate_pfn(page_to_pfn(dpage)) | @@ -630,6 +676,37 @@ static void dmirror_migrate_alloc_and_copy(struct migrate_vma *args, if ((*src & MIGRATE_PFN_WRITE) || (!spage && args->vma->vm_flags & VM_WRITE)) *dst |= MIGRATE_PFN_WRITE; + + if (is_huge) { + struct page **tpage; + unsigned int order = compound_order(dpage); + unsigned long endp = pfn + (1UL << order); + + *dst |= MIGRATE_PFN_COMPOUND; + tpage = k...

...rate.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 dc4e60a496f2..74735256e260 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2237,8 +2237,8...

...rate.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 e2565374d330..33e063c28c1b 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2237,8 +2237,8...

...64965c8bd 100644 > --- a/include/linux/migrate.h > +++ b/include/linux/migrate.h > @@ -166,6 +166,7 @@ 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) > diff --git a/include/linux/mm.h b/include/linux/mm.h > index dc7b87310c10..020b9dd3cddb 100644 > --- a/incl...

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

...rate.h index 3e546cbf03dd..f6a64965c8bd 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -166,6 +166,7 @@ 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) diff --git a/include/linux/mm.h b/include/linux/mm.h index dc7b87310c10..020b9dd3cddb 100644 --- a/include/linux/mm.h +++ b/include/linu...

...t.com> Cc: Ben Skeggs <bskeggs at redhat.com> --- This patch is based on top of Christoph Hellwig's 9 patch series https://lore.kernel.org/linux-mm/20190729234611.GC7171 at redhat.com/T/#u "turn the hmm migrate_vma upside down" but without patch 9 "mm: remove the unused MIGRATE_PFN_WRITE" and adds a use for the flag. drivers/gpu/drm/nouveau/nouveau_dmem.c | 45 +++++++++----- drivers/gpu/drm/nouveau/nouveau_svm.c | 86 ++++++++++++++++++++++++++ drivers/gpu/drm/nouveau/nouveau_svm.h | 19 ++++++ 3 files changed, 133 insertions(+), 17 deletions(-) diff --git a/drivers/gpu...

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

...tatic unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, > goto out_free_page; > } > > +done: > *pfn = NVIF_VMM_PFNMAP_V0_V | NVIF_VMM_PFNMAP_V0_VRAM | > ((paddr >> PAGE_SHIFT) << NVIF_VMM_PFNMAP_V0_ADDR_SHIFT); > if (src & MIGRATE_PFN_WRITE) > @@ -615,6 +622,7 @@ nouveau_dmem_migrate_vma(struct nouveau_drm *drm, > struct migrate_vma args = { > .vma = vma, > .start = start, > + .src_owner = drm->dev, Hi Ralph, This .src_owner setting does look like a required fix, but it seems like a completely separat...

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

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

...rate.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 long migrate_pfn(unsigned long pfn) enum migrate_vma_direction { MIGRATE_VMA_SELECT_SYSTEM...

...igrate.h >>> +++ b/include/linux/migrate.h >>> @@ -166,6 +166,7 @@ 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) >>> diff --git a/include/linux/mm.h b/include/linux/mm.h >>> index...

...ce notify event. > --- > > This patch is based on top of Christoph Hellwig's 9 patch series > https://lore.kernel.org/linux-mm/20190729234611.GC7171 at redhat.com/T/#u > "turn the hmm migrate_vma upside down" but without patch 9 > "mm: remove the unused MIGRATE_PFN_WRITE" and adds a use for the flag. > > > drivers/gpu/drm/nouveau/nouveau_dmem.c | 45 +++++++++----- > drivers/gpu/drm/nouveau/nouveau_svm.c | 86 ++++++++++++++++++++++++++ > drivers/gpu/drm/nouveau/nouveau_svm.h | 19 ++++++ > 3 files changed, 133 insertions(+), 17 deletion...

.../linux/migrate.h >>>>> @@ -166,6 +166,7 @@ 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) >>>>> diff --git a/include/linux/mm...

...a/include/linux/migrate.h b/include/linux/migrate.h index 093d67fcf6dd..229153c2c496 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -167,7 +167,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_LOCKED (1UL << 2) #define MIGRATE_PFN_WRITE (1UL << 3) #define MIGRATE_PFN_DEVICE (1UL << 4) -#define MIGRATE_PFN_ERROR (1UL << 5) #define MIGRATE_PFN_SHIFT 6 static inline struct page *migrate_pfn_to_page(unsigned long mpfn) -- 2.20.1