From: Logan Gunthorpe <logang@deltatee.com>
To: Serguei Sagalovitch <serguei.sagalovitch@amd.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Haggai Eran <haggaie@mellanox.com>
Cc: "Christian König" <christian.koenig@amd.com>,
"Dan Williams" <dan.j.williams@intel.com>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@ml01.01.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"Kuehling, Felix" <Felix.Kuehling@amd.com>,
"Bridgman, John" <John.Bridgman@amd.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"Sander, Ben" <ben.sander@amd.com>,
"Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>,
"Blinzer, Paul" <Paul.Blinzer@amd.com>,
"Linux-media@vger.kernel.org" <Linux-media@vger.kernel.org>,
"Max Gurtovoy" <maxg@mellanox.com>
Subject: Re: Enabling peer to peer device transactions for PCIe devices
Date: Mon, 28 Nov 2016 14:36:49 -0700 [thread overview]
Message-ID: <c8c25265-9f59-f3d6-6249-07500e73930e@deltatee.com> (raw)
In-Reply-To: <0d3d56e2-4d2b-85b7-9487-b7ae2aaea610@amd.com>
On 28/11/16 12:35 PM, Serguei Sagalovitch wrote:
> As soon as PeerDirect mapping is called then GPU must not "move" the
> such memory. It is by PeerDirect design. It is similar how it is works
> with system memory and RDMA MR: when "get_user_pages" is called then the
> memory is pinned.
We haven't touch this in a long time and perhaps it changed, but there
definitely was a call back in the PeerDirect API to allow the GPU to
invalidate the mapping. That's what we don't want.
Logan
next prev parent reply other threads:[~2016-11-28 21:37 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-21 20:36 Enabling peer to peer device transactions for PCIe devices Deucher, Alexander
2016-11-22 18:11 ` Dan Williams
[not found] ` <75a1f44f-c495-7d1e-7e1c-17e89555edba@amd.com>
2016-11-22 20:01 ` Dan Williams
2016-11-22 20:10 ` Daniel Vetter
2016-11-22 20:24 ` Dan Williams
2016-11-22 20:35 ` Serguei Sagalovitch
2016-11-22 21:03 ` Daniel Vetter
2016-11-22 21:21 ` Dan Williams
2016-11-22 22:21 ` Sagalovitch, Serguei
2016-11-23 7:49 ` Daniel Vetter
2016-11-23 8:51 ` Christian König
2016-11-23 19:27 ` Serguei Sagalovitch
2016-11-23 17:03 ` Dave Hansen
2016-11-23 17:13 ` Logan Gunthorpe
2016-11-23 17:27 ` Bart Van Assche
2016-11-23 18:40 ` Dan Williams
2016-11-23 19:12 ` Jason Gunthorpe
2016-11-23 19:24 ` Serguei Sagalovitch
2016-11-23 19:06 ` Serguei Sagalovitch
2016-11-23 19:05 ` Jason Gunthorpe
2016-11-23 19:14 ` Serguei Sagalovitch
2016-11-23 19:32 ` Jason Gunthorpe
[not found] ` <c2c88376-5ba7-37d1-4d3e-592383ebb00a@amd.com>
2016-11-23 20:33 ` Jason Gunthorpe
2016-11-23 21:11 ` Logan Gunthorpe
2016-11-23 21:55 ` Jason Gunthorpe
2016-11-23 22:42 ` Dan Williams
2016-11-23 23:25 ` Jason Gunthorpe
2016-11-24 9:45 ` Christian König
2016-11-24 16:26 ` Jason Gunthorpe
2016-11-24 17:00 ` Serguei Sagalovitch
2016-11-24 17:55 ` Logan Gunthorpe
2016-11-25 13:06 ` Christian König
2016-11-25 16:45 ` Logan Gunthorpe
2016-11-25 17:20 ` Serguei Sagalovitch
2016-11-25 20:26 ` Felix Kuehling
2016-11-25 20:48 ` Serguei Sagalovitch
2016-11-24 0:40 ` Sagalovitch, Serguei
2016-11-24 16:24 ` Jason Gunthorpe
2016-11-24 1:25 ` Logan Gunthorpe
2016-11-24 16:42 ` Jason Gunthorpe
2016-11-24 18:11 ` Logan Gunthorpe
2016-11-25 7:58 ` Christoph Hellwig
2016-11-25 19:41 ` Jason Gunthorpe
2016-11-25 17:59 ` Serguei Sagalovitch
2016-11-25 13:22 ` Christian König
2016-11-25 17:16 ` Serguei Sagalovitch
2016-11-25 19:34 ` Jason Gunthorpe
2016-11-25 19:49 ` Serguei Sagalovitch
2016-11-25 20:19 ` Jason Gunthorpe
2016-11-25 23:41 ` Alex Deucher
2016-11-25 19:32 ` Jason Gunthorpe
2016-11-25 20:40 ` Christian König
2016-11-25 20:51 ` Felix Kuehling
2016-11-25 21:18 ` Jason Gunthorpe
2016-11-27 8:16 ` Haggai Eran
2016-11-27 14:02 ` Haggai Eran
2016-11-27 14:07 ` Christian König
2016-11-28 5:31 ` zhoucm1
2016-11-28 14:48 ` Serguei Sagalovitch
2016-11-28 18:36 ` Haggai Eran
2016-11-28 16:57 ` Jason Gunthorpe
2016-11-28 18:19 ` Haggai Eran
2016-11-28 19:02 ` Jason Gunthorpe
2016-11-30 10:45 ` Haggai Eran
2016-11-30 16:23 ` Jason Gunthorpe
2016-11-30 17:28 ` Serguei Sagalovitch
2016-12-04 7:33 ` Haggai Eran
2016-11-30 18:01 ` Logan Gunthorpe
2016-12-04 7:42 ` Haggai Eran
2016-12-04 13:06 ` Stephen Bates
2016-12-04 13:23 ` Stephen Bates
2016-12-05 17:18 ` Jason Gunthorpe
2016-12-05 17:40 ` Dan Williams
2016-12-05 18:02 ` Jason Gunthorpe
2016-12-05 18:08 ` Dan Williams
2016-12-05 18:39 ` Logan Gunthorpe
2016-12-05 18:48 ` Dan Williams
2016-12-05 19:14 ` Jason Gunthorpe
2016-12-05 19:27 ` Logan Gunthorpe
2016-12-05 19:46 ` Jason Gunthorpe
2016-12-05 19:59 ` Logan Gunthorpe
2016-12-05 20:06 ` Christoph Hellwig
2016-12-06 8:06 ` Stephen Bates
2016-12-06 16:38 ` Jason Gunthorpe
2016-12-06 16:51 ` Logan Gunthorpe
2016-12-06 17:28 ` Jason Gunthorpe
2016-12-06 21:47 ` Logan Gunthorpe
2016-12-06 22:02 ` Dan Williams
2016-12-06 17:12 ` Christoph Hellwig
2016-12-04 7:53 ` Haggai Eran
2016-11-30 17:10 ` Deucher, Alexander
2016-11-28 18:20 ` Logan Gunthorpe
2016-11-28 19:35 ` Serguei Sagalovitch
2016-11-28 21:36 ` Logan Gunthorpe [this message]
2016-11-28 21:55 ` Serguei Sagalovitch
2016-11-28 22:24 ` Jason Gunthorpe
2017-01-05 18:39 ` Jerome Glisse
2017-01-05 19:01 ` Jason Gunthorpe
2017-01-05 19:54 ` Jerome Glisse
2017-01-05 20:07 ` Jason Gunthorpe
2017-01-05 20:19 ` Jerome Glisse
2017-01-05 22:42 ` Jason Gunthorpe
2017-01-05 23:23 ` Jerome Glisse
2017-01-06 0:30 ` Jason Gunthorpe
2017-01-06 0:41 ` Serguei Sagalovitch
2017-01-06 1:58 ` Jerome Glisse
2017-01-06 16:56 ` Serguei Sagalovitch
2017-01-06 17:37 ` Jerome Glisse
2017-01-06 18:26 ` Jason Gunthorpe
2017-01-06 19:12 ` Deucher, Alexander
2017-01-06 22:10 ` Logan Gunthorpe
2017-01-12 4:54 ` Stephen Bates
2017-01-12 15:11 ` Jerome Glisse
2017-01-12 17:17 ` Jason Gunthorpe
2017-01-13 13:04 ` Christian König
2017-01-12 22:35 ` Logan Gunthorpe
2017-01-06 15:08 ` Henrique Almeida
2017-10-20 12:36 ` Ludwig Petrosyan
2017-10-20 15:48 ` Logan Gunthorpe
2017-10-22 6:13 ` Petrosyan, Ludwig
2017-10-22 17:19 ` Logan Gunthorpe
2017-10-23 16:08 ` David Laight
2017-10-23 22:04 ` Logan Gunthorpe
2017-10-24 5:58 ` Petrosyan, Ludwig
2017-10-24 14:58 ` David Laight
2017-10-26 13:28 ` Petrosyan, Ludwig
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