From: Andrew Morton <akpm@linux-foundation.org>
To: "Jérôme Glisse" <jglisse@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
John Hubbard <jhubbard@nvidia.com>,
Dan Williams <dan.j.williams@intel.com>,
David Nellans <dnellans@nvidia.com>,
Balbir Singh <bsingharora@gmail.com>
Subject: Re: [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY
Date: Thu, 17 Aug 2017 14:12:45 -0700 [thread overview]
Message-ID: <20170817141245.93cfb315cfc598ff86928639@linux-foundation.org> (raw)
In-Reply-To: <20170817000548.32038-14-jglisse@redhat.com>
On Wed, 16 Aug 2017 20:05:42 -0400 J__r__me Glisse <jglisse@redhat.com> wrote:
> Introduce a new migration mode that allow to offload the copy to
> a device DMA engine. This changes the workflow of migration and
> not all address_space migratepage callback can support this. So
> it needs to be tested in those cases.
Can you please expand on this? What additional testing must be
performed before we are able to merge this into mainline?
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: "Jérôme Glisse" <jglisse@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
John Hubbard <jhubbard@nvidia.com>,
Dan Williams <dan.j.williams@intel.com>,
David Nellans <dnellans@nvidia.com>,
Balbir Singh <bsingharora@gmail.com>
Subject: Re: [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY
Date: Thu, 17 Aug 2017 14:12:45 -0700 [thread overview]
Message-ID: <20170817141245.93cfb315cfc598ff86928639@linux-foundation.org> (raw)
In-Reply-To: <20170817000548.32038-14-jglisse@redhat.com>
On Wed, 16 Aug 2017 20:05:42 -0400 J__r__me Glisse <jglisse@redhat.com> wrote:
> Introduce a new migration mode that allow to offload the copy to
> a device DMA engine. This changes the workflow of migration and
> not all address_space migratepage callback can support this. So
> it needs to be tested in those cases.
Can you please expand on this? What additional testing must be
performed before we are able to merge this into mainline?
--
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next prev parent reply other threads:[~2017-08-17 21:12 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-17 0:05 [HMM-v25 00/19] HMM (Heterogeneous Memory Management) v25 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 01/19] hmm: heterogeneous memory management documentation v3 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 02/19] mm/hmm: heterogeneous memory management (HMM for short) v5 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 03/19] mm/hmm/mirror: mirror process address space on device with HMM helpers v3 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 04/19] mm/hmm/mirror: helper to snapshot CPU page table v4 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 05/19] mm/hmm/mirror: device page fault handler Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 06/19] mm/memory_hotplug: introduce add_pages Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 07/19] mm/ZONE_DEVICE: new type of ZONE_DEVICE for unaddressable memory v5 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2018-12-20 8:33 ` Dan Williams
2018-12-20 16:15 ` Jerome Glisse
2018-12-20 16:15 ` Jerome Glisse
2018-12-20 16:47 ` Dan Williams
2018-12-20 16:47 ` Dan Williams
2018-12-20 16:57 ` Jerome Glisse
2018-12-20 16:57 ` Jerome Glisse
2017-08-17 0:05 ` [HMM-v25 08/19] mm/ZONE_DEVICE: special case put_page() for device private pages v4 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 09/19] mm/memcontrol: allow to uncharge page without using page->lru field Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 10/19] mm/memcontrol: support MEMORY_DEVICE_PRIVATE v4 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-09-05 17:13 ` Laurent Dufour
2017-09-05 17:13 ` Laurent Dufour
2017-09-05 17:13 ` Laurent Dufour
2017-09-05 17:21 ` Jerome Glisse
2017-09-05 17:21 ` Jerome Glisse
2017-08-17 0:05 ` [HMM-v25 11/19] mm/hmm/devmem: device memory hotplug using ZONE_DEVICE v7 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 12/19] mm/hmm/devmem: dummy HMM device for ZONE_DEVICE memory v3 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 21:12 ` Andrew Morton [this message]
2017-08-17 21:12 ` Andrew Morton
2017-08-17 21:44 ` Jerome Glisse
2017-08-17 21:44 ` Jerome Glisse
2017-08-17 0:05 ` [HMM-v25 14/19] mm/migrate: new memory migration helper for use with device memory v5 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 15/19] mm/migrate: migrate_vma() unmap page from vma while collecting pages Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 16/19] mm/migrate: support un-addressable ZONE_DEVICE page in migration v3 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 17/19] mm/migrate: allow migrate_vma() to alloc new page on empty entry v4 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 18/19] mm/device-public-memory: device memory cache coherent with CPU v5 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-08-17 0:05 ` [HMM-v25 19/19] mm/hmm: add new helper to hotplug CDM memory region v3 Jérôme Glisse
2017-08-17 0:05 ` Jérôme Glisse
2017-09-04 3:09 ` Bob Liu
2017-09-04 3:09 ` Bob Liu
2017-09-04 15:51 ` Jerome Glisse
2017-09-04 15:51 ` Jerome Glisse
2017-09-05 1:13 ` Bob Liu
2017-09-05 1:13 ` Bob Liu
2017-09-05 2:38 ` Jerome Glisse
2017-09-05 2:38 ` Jerome Glisse
2017-09-05 3:50 ` Bob Liu
2017-09-05 3:50 ` Bob Liu
2017-09-05 13:50 ` Jerome Glisse
2017-09-05 13:50 ` Jerome Glisse
2017-09-05 16:18 ` Dan Williams
2017-09-05 16:18 ` Dan Williams
2017-09-05 19:00 ` Ross Zwisler
2017-09-05 19:00 ` Ross Zwisler
2017-09-05 19:20 ` Jerome Glisse
2017-09-05 19:20 ` Jerome Glisse
2017-09-08 19:43 ` Ross Zwisler
2017-09-08 19:43 ` Ross Zwisler
2017-09-08 20:29 ` Jerome Glisse
2017-09-08 20:29 ` Jerome Glisse
2017-09-05 18:54 ` Ross Zwisler
2017-09-05 18:54 ` Ross Zwisler
2017-09-06 1:25 ` Bob Liu
2017-09-06 1:25 ` Bob Liu
2017-09-06 2:12 ` Jerome Glisse
2017-09-06 2:12 ` Jerome Glisse
2017-09-07 2:06 ` Bob Liu
2017-09-07 2:06 ` Bob Liu
2017-09-07 17:00 ` Jerome Glisse
2017-09-07 17:00 ` Jerome Glisse
2017-09-07 17:27 ` Jerome Glisse
2017-09-07 17:27 ` Jerome Glisse
2017-09-08 1:59 ` Bob Liu
2017-09-08 1:59 ` Bob Liu
2017-09-08 20:43 ` Dan Williams
2017-09-08 20:43 ` Dan Williams
2017-11-17 3:47 ` chetan L
2017-11-17 3:47 ` chetan L
2017-09-05 3:36 ` Balbir Singh
2017-09-05 3:36 ` Balbir Singh
2017-08-17 21:39 ` [HMM-v25 00/19] HMM (Heterogeneous Memory Management) v25 Andrew Morton
2017-08-17 21:39 ` Andrew Morton
2017-08-17 21:55 ` Jerome Glisse
2017-08-17 21:55 ` Jerome Glisse
2017-08-17 21:59 ` Dan Williams
2017-08-17 21:59 ` Dan Williams
2017-08-17 22:02 ` Jerome Glisse
2017-08-17 22:02 ` Jerome Glisse
2017-08-17 22:06 ` Dan Williams
2017-08-17 22:06 ` Dan Williams
2017-08-17 22:16 ` Andrew Morton
2017-08-17 22:16 ` Andrew Morton
2017-12-13 12:10 ` Figo.zhang
2017-12-13 16:12 ` Jerome Glisse
2017-12-14 2:48 ` Figo.zhang
2017-12-14 3:16 ` Jerome Glisse
2017-12-14 3:53 ` Figo.zhang
2017-12-14 4:16 ` Jerome Glisse
2017-12-14 7:05 ` Figo.zhang
2017-12-14 15:28 ` Jerome Glisse
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