Displaying 14 results from an estimated 14 matches for "migrate_pfn_compound".
2020 Nov 06
0
[PATCH v3 3/6] mm: support THP migration to device private memory
Support transparent huge page migration to ZONE_DEVICE private memory.
A new selection flag (MIGRATE_VMA_SELECT_COMPOUND) is added to request
THP migration. Otherwise, THPs are split when filling in the source PFN
array. A new flag (MIGRATE_PFN_COMPOUND) is added to the source PFN array
to indicate a huge page can be migrated. If the device driver can allocate
a huge page, it sets the MIGRATE_PFN_COMPOUND flag in the destination PFN
array. migrate_vma_pages() will fallback to PAGE_SIZE pages if
MIGRATE_PFN_COMPOUND is not set in both source and de...
2020 Jun 21
2
[PATCH 13/16] mm: support THP migration to device private memory
On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
> Support transparent huge page migration to ZONE_DEVICE private memory.
> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> indicate the huge page was fully mapped by the CPU.
> Export prep_compound_page() so that device drivers can create huge
> device private pages after calling memremap_pages().
>
> Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
>...
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
On 22 Jun 2020, at 15:36, Ralph Campbell wrote:
> On 6/21/20 4:20 PM, Zi Yan wrote:
>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
>>
>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>> indicate the huge page was fully mapped by the CPU.
>>> Export prep_compound_page() so that device drivers can create huge
>>> device private pages after calling memremap_pages().
>>>
>>> Signed-off-by: Ralph Campb...
2020 Jun 19
0
[PATCH 13/16] mm: support THP migration to device private memory
Support transparent huge page migration to ZONE_DEVICE private memory.
A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
indicate the huge page was fully mapped by the CPU.
Export prep_compound_page() so that device drivers can create huge
device private pages after calling memremap_pages().
Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
---
include/linux/migrate.h...
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 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...020, at 15:36, Ralph Campbell wrote:
>>
>>> On 6/21/20 4:20 PM, Zi Yan wrote:
>>>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
>>>>
>>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>>>> indicate the huge page was fully mapped by the CPU.
>>>>> Export prep_compound_page() so that device drivers can create huge
>>>>> device private pages after calling memremap_pages().
>>>>>
>>...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
On 6/21/20 4:20 PM, Zi Yan wrote:
> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
>
>> Support transparent huge page migration to ZONE_DEVICE private memory.
>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>> indicate the huge page was fully mapped by the CPU.
>> Export prep_compound_page() so that device drivers can create huge
>> device private pages after calling memremap_pages().
>>
>> Signed-off-by: Ralph Campbell <rcampbell at...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
...wrote:
> On 22 Jun 2020, at 15:36, Ralph Campbell wrote:
>
>> On 6/21/20 4:20 PM, Zi Yan wrote:
>>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
>>>
>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
>>>> indicate the huge page was fully mapped by the CPU.
>>>> Export prep_compound_page() so that device drivers can create huge
>>>> device private pages after calling memremap_pages().
>>>>
>>>> Signed...
2020 Jun 22
0
[PATCH 13/16] mm: support THP migration to device private memory
...wrote:
> >>
> >>> On 6/21/20 4:20 PM, Zi Yan wrote:
> >>>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
> >>>>
> >>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
> >>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> >>>>> indicate the huge page was fully mapped by the CPU.
> >>>>> Export prep_compound_page() so that device drivers can create huge
> >>>>> device private pages after calling memremap_pages().
> >>...
2020 Jun 19
0
[PATCH 15/16] mm/hmm/test: add self tests for THP migration
...(entry, DPT_XA_TAG_WRITE);
xa_store(&dmirror->pt, pfn, entry, GFP_ATOMIC);
mutex_unlock(&dmirror->mutex);
- continue;
+ goto next;
}
- dpage = dmirror_devmem_alloc_page(mdevice);
+ /* This flag is only set if a whole huge page is migrated. */
+ is_huge = *src & MIGRATE_PFN_COMPOUND;
+ dpage = dmirror_devmem_alloc_page(mdevice, is_huge);
if (!dpage)
- continue;
-
- rpage = dpage->zone_device_data;
- if (spage)
- copy_highpage(rpage, spage);
- else
- clear_highpage(rpage);
+ goto next;
/*
* Normally, a device would use the page->zone_device_data to...
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
2020 Jun 22
2
[PATCH 13/16] mm: support THP migration to device private memory
...> >>> On 6/21/20 4:20 PM, Zi Yan wrote:
> > >>>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote:
> > >>>>
> > >>>>> Support transparent huge page migration to ZONE_DEVICE private memory.
> > >>>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to
> > >>>>> indicate the huge page was fully mapped by the CPU.
> > >>>>> Export prep_compound_page() so that device drivers can create huge
> > >>>>> device private pages after calling memremap_pages()...
2020 Nov 06
1
[PATCH v3 1/6] mm/thp: add prep_transhuge_device_private_page()
On Thu, Nov 05, 2020 at 04:51:42PM -0800, Ralph Campbell wrote:
> Add a helper function to allow device drivers to create device private
> transparent huge pages. This is intended to help support device private
> THP migrations.
I think you'd be better off with these calling conventions:
-void prep_transhuge_page(struct page *page)
+struct page *thp_prep(struct page *page)
{
+