search for: migrate_pfn_valid

...ret; } diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 7f04754c7f2b..093d67fcf6dd 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -182,107 +182,27 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } -/* - * struct migrate_vma_ops - migrate operation callback - * - * @alloc_and_copy: alloc destination memory and copy source memory to it - * @finalize_and_map: allow caller to map the successfully migrated pages - * - * - * The alloc_and_copy() callback happens once all source pages have be...

...ret; } diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 7f04754c7f2b..18156d379ebf 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -182,107 +182,27 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } -/* - * struct migrate_vma_ops - migrate operation callback - * - * @alloc_and_copy: alloc destination memory and copy source memory to it - * @finalize_and_map: allow caller to map the successfully migrated pages - * - * - * The alloc_and_copy() callback happens once all source pages have be...

...clude/linux/migrate.h b/include/linux/migrate.h > index 7f04754c7f2b..093d67fcf6dd 100644 > --- a/include/linux/migrate.h > +++ b/include/linux/migrate.h > @@ -182,107 +182,27 @@ static inline unsigned long migrate_pfn(unsigned long pfn) > return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; > } > > -/* > - * struct migrate_vma_ops - migrate operation callback > - * > - * @alloc_and_copy: alloc destination memory and copy source memory to it > - * @finalize_and_map: allow caller to map the successfully migrated pages > - * > - * > - * The alloc_and_c...

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

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

...de/linux/migrate.h b/include/linux/migrate.h > > > index 3e546cbf03dd..620f2235d7d4 100644 > > > +++ b/include/linux/migrate.h > > > @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) > > > return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; > > > } > > > +enum migrate_vma_direction { > > > + MIGRATE_VMA_FROM_SYSTEM, > > > + MIGRATE_VMA_FROM_DEVICE_PRIVATE, > > > +}; > > > > I would have guessed this is more natural as _FROM_DEVICE_ and > > TO_DEVICE_ ? > > The c...

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

...> u64 *pfns; > diff --git a/include/linux/migrate.h b/include/linux/migrate.h > index 3e546cbf03dd..620f2235d7d4 100644 > +++ b/include/linux/migrate.h > @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) > return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; > } > > +enum migrate_vma_direction { > + MIGRATE_VMA_FROM_SYSTEM, > + MIGRATE_VMA_FROM_DEVICE_PRIVATE, > +}; I would have guessed this is more natural as _FROM_DEVICE_ and TO_DEVICE_ ? All the callers of this API are device drivers managing their DEVICE_PRIVATE, right? Jas...

...t; > diff --git 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 --g...

...e.h > > > > > index 3e546cbf03dd..620f2235d7d4 100644 > > > > > +++ b/include/linux/migrate.h > > > > > @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) > > > > > return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; > > > > > } > > > > > +enum migrate_vma_direction { > > > > > + MIGRATE_VMA_FROM_SYSTEM, > > > > > + MIGRATE_VMA_FROM_DEVICE_PRIVATE, > > > > > +}; > > > > > > > > I would have guessed this is mo...

..., 5 insertions(+), 5 deletions(-) diff --git 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 7...

...migrate.h b/include/linux/migrate.h >>>> index 3e546cbf03dd..620f2235d7d4 100644 >>>> +++ b/include/linux/migrate.h >>>> @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) >>>> return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; >>>> } >>>> +enum migrate_vma_direction { >>>> + MIGRATE_VMA_FROM_SYSTEM, >>>> + MIGRATE_VMA_FROM_DEVICE_PRIVATE, >>>> +}; >>> >>> I would have guessed this is more natural as _FROM_DEVICE_ and >>> TO_DEVICE_...

...;> diff --git a/include/linux/migrate.h b/include/linux/migrate.h >> index 3e546cbf03dd..620f2235d7d4 100644 >> +++ b/include/linux/migrate.h >> @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) >> return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; >> } >> >> +enum migrate_vma_direction { >> + MIGRATE_VMA_FROM_SYSTEM, >> + MIGRATE_VMA_FROM_DEVICE_PRIVATE, >> +}; > > I would have guessed this is more natural as _FROM_DEVICE_ and > TO_DEVICE_ ? The caller controls where the destination memory...

...u64 *pfns; diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e546cbf03dd..620f2235d7d4 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } +enum migrate_vma_direction { + MIGRATE_VMA_FROM_SYSTEM, + MIGRATE_VMA_FROM_DEVICE_PRIVATE, +}; + struct migrate_vma { struct vm_area_struct *vma; /* @@ -199,11 +204,12 @@ struct migrate_vma { /* * Set to the owner value also stored in page->pgmap->owner for - * migrating o...

....h >>>>>> index 3e546cbf03dd..620f2235d7d4 100644 >>>>>> +++ b/include/linux/migrate.h >>>>>> @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) >>>>>> return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; >>>>>> } >>>>>> +enum migrate_vma_direction { >>>>>> + MIGRATE_VMA_FROM_SYSTEM, >>>>>> + MIGRATE_VMA_FROM_DEVICE_PRIVATE, >>>>>> +}; >>>>> >>>>> I would have guessed this is...

...u64 *pfns; diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e546cbf03dd..620f2235d7d4 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } +enum migrate_vma_direction { + MIGRATE_VMA_FROM_SYSTEM, + MIGRATE_VMA_FROM_DEVICE_PRIVATE, +}; + struct migrate_vma { struct vm_area_struct *vma; /* @@ -199,11 +204,12 @@ struct migrate_vma { /* * Set to the owner value also stored in page->pgmap->owner for - * migrating o...

...gt; > diff --git 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/...

...u64 *pfns; diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e546cbf03dd..aafec0ca7b41 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } +enum migrate_vma_direction { + MIGRATE_VMA_SELECT_SYSTEM = (1UL << 0), + MIGRATE_VMA_SELECT_DEVICE_PRIVATE = (1UL << 1), +}; + struct migrate_vma { struct vm_area_struct *vma; /* @@ -199,11 +204,11 @@ struct migrate_vma { /* * Set to the owner value also store...

...u64 *pfns; diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 3e546cbf03dd..aafec0ca7b41 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -180,6 +180,11 @@ static inline unsigned long migrate_pfn(unsigned long pfn) return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID; } +enum migrate_vma_direction { + MIGRATE_VMA_SELECT_SYSTEM = (1UL << 0), + MIGRATE_VMA_SELECT_DEVICE_PRIVATE = (1UL << 1), +}; + struct migrate_vma { struct vm_area_struct *vma; /* @@ -199,11 +204,11 @@ struct migrate_vma { /* * Set to the owner value also store...

The goal for this series is to avoid device private memory TLB invalidations when migrating a range of addresses from system memory to device private memory and some of those pages have already been migrated. The approach taken is to introduce a new mmu notifier invalidation event type and use that in the device driver to skip invalidation callbacks from migrate_vma_setup(). The device driver is