Displaying 15 results from an estimated 15 matches for "dmirror_devmem_fault_alloc_and_copi".
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dmirror_devmem_fault_alloc_and_copy
2020 Jul 23
0
[PATCH v4 5/6] mm/hmm/test: use the new migration invalidation
Use the new MMU_NOTIFY_MIGRATE event to skip MMU invalidations of device
private memory and handle the invalidation in the driver as part of
migrating device private memory.
Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
---
lib/test_hmm.c | 30 +++++++++++++++-----------
tools/testing/selftests/vm/hmm-tests.c | 18 ++++++++++++----
2 files changed, 31
2020 Jul 06
8
[PATCH 0/5] mm/migrate: avoid device private invalidations
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
2020 Jul 21
6
[PATCH v3 0/5] mm/migrate: avoid device private invalidations
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
2020 Jul 13
9
[PATCH v2 0/5] mm/migrate: avoid device private invalidations
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
2020 Jul 23
9
[PATCH v4 0/6] mm/migrate: avoid device private invalidations
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
2020 Mar 20
0
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
On Thu, Mar 19, 2020 at 03:56:50PM -0700, Ralph Campbell wrote:
> Adding linux-kselftest at vger.kernel.org for the test config question.
>
> On 3/19/20 11:17 AM, Jason Gunthorpe wrote:
> > On Tue, Mar 17, 2020 at 04:14:31PM -0700, Ralph Campbell wrote:
> > >
> > > On 3/17/20 5:59 AM, Christoph Hellwig wrote:
> > > > On Tue, Mar 17, 2020 at 09:47:55AM
2020 Jun 19
0
[PATCH 15/16] mm/hmm/test: add self tests for THP migration
Add some basic stand alone self tests for migrating system memory to device
private memory and back.
Signed-off-by: Ralph Campbell <rcampbell at nvidia.com>
---
lib/test_hmm.c | 323 ++++++++++++++++++++-----
tools/testing/selftests/vm/hmm-tests.c | 292 ++++++++++++++++++++++
2 files changed, 560 insertions(+), 55 deletions(-)
diff --git a/lib/test_hmm.c
2020 Mar 19
2
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
Adding linux-kselftest at vger.kernel.org for the test config question.
On 3/19/20 11:17 AM, Jason Gunthorpe wrote:
> On Tue, Mar 17, 2020 at 04:14:31PM -0700, Ralph Campbell wrote:
>>
>> On 3/17/20 5:59 AM, Christoph Hellwig wrote:
>>> On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote:
>>>> I've been using v7 of Ralph's tester and it is
2020 Mar 19
0
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
On Tue, Mar 17, 2020 at 04:14:31PM -0700, Ralph Campbell wrote:
>
> On 3/17/20 5:59 AM, Christoph Hellwig wrote:
> > On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote:
> > > I've been using v7 of Ralph's tester and it is working well - it has
> > > DEVICE_PRIVATE support so I think it can test this flow too. Ralph are
> > > you able?
2020 Mar 17
4
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
On 3/17/20 5:59 AM, Christoph Hellwig wrote:
> On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote:
>> I've been using v7 of Ralph's tester and it is working well - it has
>> DEVICE_PRIVATE support so I think it can test this flow too. Ralph are
>> you able?
>>
>> This hunk seems trivial enough to me, can we include it now?
>
> I can send
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
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
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
2020 Jan 13
9
[PATCH v6 0/6] mm/hmm/test: add self tests for HMM
This series adds new functions to the mmu interval notifier API to
allow device drivers with MMUs to dynamically mirror a process' page
tables based on device faults and invalidation callbacks. The Nouveau
driver is updated to use the extended API and a set of stand alone self
tests is added to help validate and maintain correctness.
The patches are based on linux-5.5.0-rc6 and are for