Displaying 11 results from an estimated 11 matches for "hmm_pfns_fill".
2019 Sep 12
1
[PATCH 1/4] mm/hmm: make full use of walk_page_range()
> +static int hmm_pfns_fill(unsigned long addr,
> + unsigned long end,
> + struct hmm_range *range,
> + enum hmm_pfn_value_e value)
Nit: can we use the space a little more efficient, e.g.:
static int hmm_pfns_fill(unsigned long addr, unsigned long end,
struct hmm_range *range, enum hmm_pfn_value_e value)...
2019 Sep 11
0
[PATCH 1/4] mm/hmm: make full use of walk_page_range()
...mm/hmm.c
index 902f5fa6bf93..06041d4399ff 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -252,18 +252,17 @@ static int hmm_vma_do_fault(struct mm_walk *walk, unsigned long addr,
return -EFAULT;
}
-static int hmm_pfns_bad(unsigned long addr,
- unsigned long end,
- struct mm_walk *walk)
+static int hmm_pfns_fill(unsigned long addr,
+ unsigned long end,
+ struct hmm_range *range,
+ enum hmm_pfn_value_e value)
{
- struct hmm_vma_walk *hmm_vma_walk = walk->private;
- struct hmm_range *range = hmm_vma_walk->range;
uint64_t *pfns = range->pfns;
unsigned long i;
i = (addr - range->s...
2020 Apr 22
0
[PATCH hmm 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...@pfn: pfn value for which to create the device entry
- * Return: valid device entry for the pfn
- */
-static uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range,
- unsigned long pfn)
-{
- return (pfn << range->pfn_shift) | range->flags[HMM_PFN_VALID];
-}
-
static int hmm_pfns_fill(unsigned long addr, unsigned long end,
- struct hmm_range *range, enum hmm_pfn_value_e value)
+ struct hmm_range *range, unsigned long cpu_flags)
{
- uint64_t *pfns = range->pfns;
- unsigned long i;
+ unsigned long i = (addr - range->start) >> PAGE_SHIFT;
- i = (addr - range->...
2020 May 01
0
[PATCH hmm v2 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...@pfn: pfn value for which to create the device entry
- * Return: valid device entry for the pfn
- */
-static uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range,
- unsigned long pfn)
-{
- return (pfn << range->pfn_shift) | range->flags[HMM_PFN_VALID];
-}
-
static int hmm_pfns_fill(unsigned long addr, unsigned long end,
- struct hmm_range *range, enum hmm_pfn_value_e value)
+ struct hmm_range *range, unsigned long cpu_flags)
{
- uint64_t *pfns = range->pfns;
- unsigned long i;
+ unsigned long i = (addr - range->start) >> PAGE_SHIFT;
- i = (addr - range->...
2020 Apr 22
1
[PATCH hmm 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
...e entry
> - * Return: valid device entry for the pfn
> - */
> -static uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range,
> - unsigned long pfn)
> -{
> - return (pfn << range->pfn_shift) | range->flags[HMM_PFN_VALID];
> -}
> -
> static int hmm_pfns_fill(unsigned long addr, unsigned long end,
> - struct hmm_range *range, enum hmm_pfn_value_e value)
> + struct hmm_range *range, unsigned long cpu_flags)
> {
> - uint64_t *pfns = range->pfns;
> - unsigned long i;
> + unsigned long i = (addr - range->start) >> PAGE_SHI...
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 Apr 22
0
[PATCH hmm 2/5] mm/hmm: make hmm_range_fault return 0 or -1
...c b/mm/hmm.c
index 280585833adfc1..4c7c396655b528 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -174,7 +174,6 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end,
}
if (required_fault)
return hmm_vma_fault(addr, end, required_fault, walk);
- hmm_vma_walk->last = addr;
return hmm_pfns_fill(addr, end, range, HMM_PFN_NONE);
}
@@ -207,7 +206,6 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr,
pfn = pmd_pfn(pmd) + ((addr & ~PMD_MASK) >> PAGE_SHIFT);
for (i = 0; addr < end; addr += PAGE_SIZE, i++, pfn++)
pfns[i] = hmm_device_entry_from_pfn(r...
2020 May 01
0
[PATCH hmm v2 2/5] mm/hmm: make hmm_range_fault return 0 or -1
...c b/mm/hmm.c
index 280585833adfc1..f06bcac948a79b 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -174,7 +174,6 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end,
}
if (required_fault)
return hmm_vma_fault(addr, end, required_fault, walk);
- hmm_vma_walk->last = addr;
return hmm_pfns_fill(addr, end, range, HMM_PFN_NONE);
}
@@ -207,7 +206,6 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr,
pfn = pmd_pfn(pmd) + ((addr & ~PMD_MASK) >> PAGE_SHIFT);
for (i = 0; addr < end; addr += PAGE_SIZE, i++, pfn++)
pfns[i] = hmm_device_entry_from_pfn(r...
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 May 05
1
[PATCH hmm v2 5/5] mm/hmm: remove the customizable pfn format from hmm_range_fault
..._PFN_ERROR = 1UL << (BITS_PER_LONG - 3),
> +
/* Input flags: */
...
> @@ -174,44 +162,44 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end,
> }
> if (required_fault)
> return hmm_vma_fault(addr, end, required_fault, walk);
> - return hmm_pfns_fill(addr, end, range, HMM_PFN_NONE);
> + return hmm_pfns_fill(addr, end, range, 0);
> }
>
> -static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd)
> +static inline unsigned long pmd_to_hmm_pfn_flags(struct hmm_range *range,
> + pmd_t pmd)
> {...
2019 Sep 11
6
[PATCH 0/4] HMM tests and minor fixes
These changes are based on Jason's latest hmm branch.
Patch 1 was previously posted here [1] but was dropped from the orginal
series. Hopefully, the tests will reduce concerns about edge conditions.
I'm sure more tests could be usefully added but I thought this was a good
starting point.
[1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/
Ralph Campbell