From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Subject: Re: Enabling peer to peer device transactions for PCIe devices
Date: Fri, 25 Nov 2016 12:34:10 -0700
Message-ID: <20161125193410.GD16504@obsidianresearch.com>
References: <7bc38037-b6ab-943f-59db-6280e16901ab@amd.com>
 <20161123193228.GC12146@obsidianresearch.com>
 <c2c88376-5ba7-37d1-4d3e-592383ebb00a@amd.com>
 <20161123203332.GA15062@obsidianresearch.com>
 <dd60bca8-0a35-7a3a-d3ab-b95bc3d9b973@deltatee.com>
 <20161123215510.GA16311@obsidianresearch.com>
 <91d28749-bc64-622f-56a1-26c00e6b462a@deltatee.com>
 <20161124164249.GD20818@obsidianresearch.com>
 <3f2d2db3-fb75-2422-2a18-a8497fd5d70e@amd.com>
 <7ff3cf70-b0c3-028e-fea8-c370a1185b65@amd.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>
Content-Disposition: inline
In-Reply-To: <7ff3cf70-b0c3-028e-fea8-c370a1185b65-5C7GfCeVMHo@public.gmane.org>
List-Unsubscribe: <https://lists.01.org/mailman/options/linux-nvdimm>,
 <mailto:linux-nvdimm-request-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org?subject=unsubscribe>
List-Archive: <http://lists.01.org/pipermail/linux-nvdimm/>
List-Post: <mailto:linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>
List-Help: <mailto:linux-nvdimm-request-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org?subject=help>
List-Subscribe: <https://lists.01.org/mailman/listinfo/linux-nvdimm>,
 <mailto:linux-nvdimm-request-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org?subject=subscribe>
Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org
Sender: "Linux-nvdimm" <linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>
To: Serguei Sagalovitch <serguei.sagalovitch-5C7GfCeVMHo@public.gmane.org>
Cc: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, "Bridgman,
 John" <John.Bridgman-5C7GfCeVMHo@public.gmane.org>, "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org" <linux-nvdimm-y27Ovi1pjclAfugRpC6u6w@public.gmane.org>, "Kuehling,
 Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>, "Blinzer, Paul" <Paul.Blinzer-5C7GfCeVMHo@public.gmane.org>, "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" <dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>, "Sander,
 Ben" <ben.sander-5C7GfCeVMHo@public.gmane.org>, "Suthikulpanit,
 Suravee" <Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>, "linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "Deucher,
 Alexander" <Alexander.Deucher-5C7GfCeVMHo@public.gmane.org>, Christian =?iso-8859-1?Q?K=F6nig?= <christian.koenig-5C7GfCeVMHo@public.gmane.org>, "Linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <Linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
List-Id: dri-devel@lists.freedesktop.org

On Fri, Nov 25, 2016 at 12:16:30PM -0500, Serguei Sagalovitch wrote:

> b) Allocation may not  have CPU address  at all - only GPU one.

But you don't expect RDMA to work in the case, right?

GPU people need to stop doing this windowed memory stuff :)

Jason