Displaying 16 results from an estimated 16 matches for "pud_writ".
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pud_write
2019 Jul 30
0
[PATCH 10/13] mm: only define hmm_vma_walk_pud if needed
...a/mm/hmm.c
+++ b/mm/hmm.c
@@ -455,15 +455,6 @@ static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd)
range->flags[HMM_PFN_VALID];
}
-static inline uint64_t pud_to_hmm_pfn_flags(struct hmm_range *range, pud_t pud)
-{
- if (!pud_present(pud))
- return 0;
- return pud_write(pud) ? range->flags[HMM_PFN_VALID] |
- range->flags[HMM_PFN_WRITE] :
- range->flags[HMM_PFN_VALID];
-}
-
static int hmm_vma_handle_pmd(struct mm_walk *walk,
unsigned long addr,
unsigned long end,
@@ -700,10 +691,19 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
r...
2020 May 08
0
[PATCH 4/6] mm/hmm: add output flag for compound page mapping
...pmd_write(pmd) ?
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -389,7 +391,9 @@ static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
+ return pud_write(pud) ?
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND);
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
@@ -484,7 +488,7 @@ static int h...
2020 Jun 19
0
[PATCH 09/16] mm/hmm: add output flag for compound page mapping
...pmd_write(pmd) ?
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -389,7 +391,9 @@ static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
+ return pud_write(pud) ?
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_COMPOUND);
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
@@ -484,7 +488,7 @@ static int h...
2020 Jun 30
0
[PATCH v2 2/5] mm/hmm: add output flags for PMD/PUD page mapping
...;
+ return pmd_write(pmd) ?
+ (HMM_PFN_VALID | HMM_PFN_PMD | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_PMD);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -389,7 +391,9 @@ static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
+ return pud_write(pud) ?
+ (HMM_PFN_VALID | HMM_PFN_PUD | HMM_PFN_WRITE) :
+ (HMM_PFN_VALID | HMM_PFN_PUD);
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
@@ -468,6 +472,7 @@ static int hmm_vma_wal...
2020 Jul 01
0
[PATCH v3 2/5] mm/hmm: add hmm_mapping order
...T) <<
+ HMM_PFN_ORDER_SHIFT) |
+ pmd_write(pmd) ? (HMM_PFN_VALID | HMM_PFN_WRITE) :
+ HMM_PFN_VALID;
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -389,7 +392,10 @@ static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
+ return ((unsigned long)(PUD_SHIFT - PAGE_SHIFT) <<
+ HMM_PFN_ORDER_SHIFT) |
+ pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) :
+ HMM_PFN_VALID;
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long...
2020 Jun 30
6
[PATCH v2 0/5] mm/hmm/nouveau: add PMD system memory mapping
The goal for this series is to introduce the hmm_range_fault() output
array flags HMM_PFN_PMD and HMM_PFN_PUD. This allows a device driver to
know that a given 4K PFN is actually mapped by the CPU using either a
PMD sized or PUD sized CPU page table entry and therefore the device
driver can safely map system memory using larger device MMU PTEs.
The series is based on 5.8.0-rc3 and is intended for
2020 Apr 22
0
[PATCH hmm 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...VMAP) && \
defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
-static inline uint64_t pud_to_hmm_pfn_flags(struct hmm_range *range, pud_t pud)
+static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
+ pud_t pud)
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? range->flags[HMM_PFN_VALID] |
- range->flags[HMM_PFN_WRITE] :
- range->flags[HMM_PFN_VALID];
+ return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
@@ -427,7 +417,8 @@ s...
2020 May 01
0
[PATCH hmm v2 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...VMAP) && \
defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
-static inline uint64_t pud_to_hmm_pfn_flags(struct hmm_range *range, pud_t pud)
+static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
+ pud_t pud)
{
if (!pud_present(pud))
return 0;
- return pud_write(pud) ? range->flags[HMM_PFN_VALID] |
- range->flags[HMM_PFN_WRITE] :
- range->flags[HMM_PFN_VALID];
+ return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
}
static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
@@ -427,7 +417,8 @@ s...
2020 Apr 22
1
[PATCH hmm 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...FIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
> -static inline uint64_t pud_to_hmm_pfn_flags(struct hmm_range *range, pud_t pud)
> +static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
> + pud_t pud)
> {
> if (!pud_present(pud))
> return 0;
> - return pud_write(pud) ? range->flags[HMM_PFN_VALID] |
> - range->flags[HMM_PFN_WRITE] :
> - range->flags[HMM_PFN_VALID];
> + return pud_write(pud) ? (HMM_PFN_VALID | HMM_PFN_WRITE) : HMM_PFN_VALID;
> }
>
> static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned l...
2020 Jul 01
8
[PATCH v3 0/5] mm/hmm/nouveau: add PMD system memory mapping
The goal for this series is to introduce the hmm_pfn_to_map_order()
function. This allows a device driver to know that a given 4K PFN is
actually mapped by the CPU using a larger sized CPU page table entry and
therefore the device driver can safely map system memory using larger
device MMU PTEs.
The series is based on 5.8.0-rc3 and is intended for Jason Gunthorpe's
hmm tree. These were
2020 Apr 22
11
[PATCH hmm 0/5] Adjust hmm_range_fault() API
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
2020 May 08
11
[PATCH 0/6] nouveau/hmm: add support for mapping large pages
hmm_range_fault() returns an array of page frame numbers and flags for
how the pages are mapped in the requested process' page tables. The PFN
can be used to get the struct page with hmm_pfn_to_page() and the page size
order can be determined with compound_order(page) but if the page is larger
than order 0 (PAGE_SIZE), there is no indication that the page is mapped
using a larger page size. To
2019 Aug 06
24
hmm cleanups, v2
Hi Jérôme, Ben, Felix and Jason,
below is a series against the hmm tree which cleans up various minor
bits and allows HMM_MIRROR to be built on all architectures.
Diffstat:
11 files changed, 94 insertions(+), 210 deletions(-)
A git tree is also available at:
git://git.infradead.org/users/hch/misc.git hmm-cleanups.2
Gitweb:
2019 Jul 30
29
hmm_range_fault related fixes and legacy API removal v3
Hi Jérôme, Ben, Felxi and Jason,
below is a series against the hmm tree which cleans up various minor
bits and allows HMM_MIRROR to be built on all architectures.
Diffstat:
7 files changed, 81 insertions(+), 171 deletions(-)
A git tree is also available at:
git://git.infradead.org/users/hch/misc.git hmm-cleanups
Gitweb:
2020 May 01
13
[PATCH hmm v2 0/5] Adjust hmm_range_fault() API
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
2020 Jun 19
22
[PATCH 00/16] mm/hmm/nouveau: THP mapping and migration
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