Displaying 20 results from an estimated 36 matches for "mpfn".
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2019 Jul 29
1
[PATCH 9/9] mm: remove the MIGRATE_PFN_WRITE flag
...e 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/migrate.c
> +++ b/mm/migrate.c
> @@ -2212,6 +2212,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
> unsigned long mpfn, pfn;
> struct page *page;
> swp_entry_t e...
2019 Jul 29
0
[PATCH 9/9] mm: remove the MIGRATE_PFN_WRITE flag
..._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/migrate.c
+++ b/mm/migrate.c
@@ -2212,6 +2212,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
unsigned long mpfn, pfn;
struct page *page;
swp_entry_t entry;
+ bool writable = false;
pte_t pt...
2019 Jul 29
2
[PATCH 9/9] mm: remove the MIGRATE_PFN_WRITE flag
...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/migrate.c
> +++ b/mm/migrate.c
> @@ -2212,6 +2212,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
> unsigned long mpfn, pfn;
> struct page *page;
> swp_entry_t entr...
2020 Mar 16
0
[PATCH 2/4] mm: handle multiple owners of device private pages in migrate_vma
...*args);
diff --git a/mm/migrate.c b/mm/migrate.c
index b1092876e537..7605d2c23433 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2241,7 +2241,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
arch_enter_lazy_mmu_mode();
for (; addr < end; addr += PAGE_SIZE, ptep++) {
- unsigned long mpfn, pfn;
+ unsigned long mpfn = 0, pfn;
struct page *page;
swp_entry_t entry;
pte_t pte;
@@ -2255,8 +2255,6 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
}
if (!pte_present(pte)) {
- mpfn = 0;
-
/*
* Only care about unaddressable device page special
* page table...
2020 Nov 06
0
[PATCH v3 3/6] mm: support THP migration to device private memory
...ge(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 = 1 << 0,
MIGRATE_VMA_SELECT_DEVICE_PRIVATE = 1 << 1,
+ MIGRATE_VMA_SELECT_COMPOUND = 1 << 2,
};
struct migrate_vma {
diff --git a/mm/hug...
2019 Jul 29
0
[PATCH 8/9] mm: remove the unused MIGRATE_PFN_DEVICE flag
...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 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- mpfn = migrate_pfn(page_to_pfn(page))|...
2019 Aug 14
0
[PATCH 09/10] mm: remove the unused MIGRATE_PFN_DEVICE flag
...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 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- mpfn = migrate_pfn(page_to_pfn(page))|...
2020 Mar 16
14
ensure device private pages have an owner v2
When acting on device private mappings a driver needs to know if the
device (or other entity in case of kvmppc) actually owns this private
mapping. This series adds an owner field and converts the migrate_vma
code over to check it. I looked into doing the same for
hmm_range_fault, but as far as I can tell that code has never been
wired up to actually work for device private memory, so instead of
2019 Jul 29
24
turn the hmm migrate_vma upside down
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
2020 Nov 06
12
[PATCH v3 0/6] mm/hmm/nouveau: add THP migration to migrate_vma_*
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
2020 Sep 02
10
[PATCH v2 0/7] mm/hmm/nouveau: add THP migration to migrate_vma_*
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
2020 Jun 19
0
[PATCH 15/16] mm/hmm/test: add self tests for THP migration
...e migrated pages into the device's page tables. */
mutex_lock(&dmirror->mutex);
- for (pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); pfn++,
- src++, dst++) {
+ for (pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); ) {
+ unsigned long mpfn;
struct page *dpage;
+ struct page *rpage;
void *entry;
if (!(*src & MIGRATE_PFN_MIGRATE))
- continue;
+ goto next;
- dpage = migrate_pfn_to_page(*dst);
+ mpfn = *dst;
+ dpage = migrate_pfn_to_page(mpfn);
if (!dpage)
- continue;
+ goto next;
/*
* Store the p...
2020 Jun 19
0
[PATCH 01/16] mm: fix migrate_vma_setup() src_owner and normal pages
...;
---
mm/migrate.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index f37729673558..24535281cea3 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2295,8 +2295,6 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
- goto next;
pfn = pte_pfn(pte);
if (is_zero_pfn(pfn)) {
mpfn = MIGRATE_PFN_MIGRATE;
--
2.20.1
2020 Jul 06
0
[PATCH 2/5] mm/migrate: add a direction parameter to migrate_vma
...te_vma_collect_pmd(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- if (page->pgmap->owner != migrate->src_owner)
+ if (migrate->dir != MIGRATE_VMA_FROM_DEVICE_PRIVATE ||
+ page->pgmap->owner != migrate->src_owner)
goto next;
mpfn = migrate_pfn(page_to_pfn(page)) |
@@ -2295,7 +2296,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
+ if (migrate->dir != MIGRATE_VMA_FROM_SYSTEM)
goto next;
p...
2020 Jul 13
0
[PATCH v2 2/5] mm/migrate: add a direction parameter to migrate_vma
...te_vma_collect_pmd(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- if (page->pgmap->owner != migrate->src_owner)
+ if (migrate->dir != MIGRATE_VMA_FROM_DEVICE_PRIVATE ||
+ page->pgmap->owner != migrate->src_owner)
goto next;
mpfn = migrate_pfn(page_to_pfn(page)) |
@@ -2295,7 +2296,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
+ if (migrate->dir != MIGRATE_VMA_FROM_SYSTEM)
goto next;
p...
2020 Jul 21
0
[PATCH v3 2/5] mm/migrate: add a flags parameter to migrate_vma
...d(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- if (page->pgmap->owner != migrate->src_owner)
+ if (!(migrate->flags &
+ MIGRATE_VMA_SELECT_DEVICE_PRIVATE) ||
+ page->pgmap->owner != migrate->pgmap_owner)
goto next;
mpfn = migrate_pfn(page_to_pfn(page)) |
@@ -2295,7 +2297,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
+ if (!(migrate->flags & MIGRATE_VMA_SELECT_SYSTEM))
goto n...
2020 Jun 21
2
[PATCH 13/16] mm: support THP migration to device private memory
...efine 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/linux/mm.h
> @@ -932,6 +932,7 @@ static inline unsigned int page_shift(struct page *page)
> }
>
> void free_compound_page(struct pag...
2020 Jul 23
0
[PATCH v4 2/6] mm/migrate: add a flags parameter to migrate_vma
...d(pmd_t *pmdp,
goto next;
page = device_private_entry_to_page(entry);
- if (page->pgmap->owner != migrate->src_owner)
+ if (!(migrate->flags &
+ MIGRATE_VMA_SELECT_DEVICE_PRIVATE) ||
+ page->pgmap->owner != migrate->pgmap_owner)
goto next;
mpfn = migrate_pfn(page_to_pfn(page)) |
@@ -2295,7 +2297,7 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
if (is_write_device_private_entry(entry))
mpfn |= MIGRATE_PFN_WRITE;
} else {
- if (migrate->src_owner)
+ if (!(migrate->flags & MIGRATE_VMA_SELECT_SYSTEM))
goto n...
2020 Jun 19
0
[PATCH 13/16] mm: support THP migration to device private memory
...ge(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/linux/mm.h
@@ -932,6 +932,7 @@ static inline unsigned int page_shift(struct page *page)
}
void free_compound_page(struct page *page);
+void prep_compound_page(str...
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...gt; #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/linux/mm.h
>>> @@ -932,6 +932,7 @@ static inline unsigned int page_shift(struct page *page)
>>>...