From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: 'Christoph Hellwig' <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: Sagi Grimberg
<sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
Tom Talpey <tom-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>,
Steve Wise
<swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>,
dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
roid-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
eli-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
Oren Duer <oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: kernel memory registration (was: RDMA/core: Transport-independent access flags)
Date: Mon, 13 Jul 2015 10:46:52 -0600 [thread overview]
Message-ID: <20150713164652.GC23832@obsidianresearch.com> (raw)
In-Reply-To: <20150711103153.GC14741-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
On Sat, Jul 11, 2015 at 03:31:53AM -0700, 'Christoph Hellwig' wrote:
> I'm not too excited about moving the code in the drivers. The RDMA
> subsystem actually has a lot more hardware drivers than ULDs, so moving
> logic into them seems like a major step backwards. From my journeys
> into the drivers it rather seems like they are doing too much work
> already.
Yes, that is true..
> Having a few schemes availabe in the core code that the driver can chose
> from seems like a much more sensible option.
I think that makes sense, but several of the schemes we are working
with are effectively single-vendor schemes. Indirect MR and DIX are
good examples of things that only one vendor implements, and are not
standardized.
In those cases it is hard to argue the core should provide support for
them.
Jason
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next prev parent reply other threads:[~2015-07-13 16:46 UTC|newest]
Thread overview: 138+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-05 23:21 [PATCH V3 0/5] Transport-independent MRs Steve Wise
2015-07-05 23:22 ` [PATCH V3 1/5] RDMA/core: Transport-independent access flags Steve Wise
2015-07-06 5:25 ` Christoph Hellwig
2015-07-06 14:23 ` Steve Wise
2015-07-07 8:58 ` 'Christoph Hellwig'
[not found] ` <20150705232158.12029.25472.stgit-PBeJgSbIpn97NCTnQtmixQ@public.gmane.org>
2015-07-06 7:09 ` Haggai Eran
[not found] ` <559A2991.3040304-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-07-06 14:29 ` Steve Wise
2015-07-07 14:17 ` Steve Wise
2015-07-07 14:34 ` Haggai Eran
2015-07-07 14:46 ` Steve Wise
2015-07-07 15:07 ` Haggai Eran
2015-07-06 7:53 ` Sagi Grimberg
2015-07-06 14:37 ` Steve Wise
2015-07-06 16:17 ` Sagi Grimberg
2015-07-06 16:55 ` Steve Wise
2015-07-07 9:00 ` Christoph Hellwig
[not found] ` <20150707090001.GB11736-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-07 9:14 ` Sagi Grimberg
[not found] ` <559B9891.8060907-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-07 14:05 ` Steve Wise
2015-07-07 16:17 ` Jason Gunthorpe
[not found] ` <20150707161751.GA623-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-07 16:27 ` Sagi Grimberg
[not found] ` <559BFE03.4020709-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-07 21:36 ` Jason Gunthorpe
2015-07-08 7:29 ` Sagi Grimberg
[not found] ` <559CD174.4040901-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-08 8:13 ` 'Christoph Hellwig'
[not found] ` <20150708081320.GB24203-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-08 10:05 ` Sagi Grimberg
[not found] ` <559CF5E8.6080000-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-08 10:20 ` 'Christoph Hellwig'
[not found] ` <20150708102035.GA28421-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-08 11:08 ` Sagi Grimberg
[not found] ` <559D0498.9050809-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-08 17:14 ` Hefty, Sean
2015-07-09 8:46 ` Sagi Grimberg
2015-07-09 13:52 ` Chuck Lever
2015-07-10 19:34 ` Christoph Hellwig
2015-07-12 7:49 ` Sagi Grimberg
2015-07-13 16:50 ` Jason Gunthorpe
2015-07-14 8:06 ` Sagi Grimberg
[not found] ` <55A4C2FA.9060707-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-14 12:24 ` Tom Talpey
[not found] ` <55A4FF93.4090406-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-07-14 13:21 ` Sagi Grimberg
2015-07-23 0:43 ` Hefty, Sean
2015-07-08 19:08 ` Jason Gunthorpe
[not found] ` <20150708190842.GB11740-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-08 20:32 ` 'Christoph Hellwig'
2015-07-09 0:03 ` Jason Gunthorpe
[not found] ` <20150709000337.GE16812-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-09 8:00 ` 'Christoph Hellwig'
2015-07-09 8:58 ` Sagi Grimberg
2015-07-09 22:18 ` Doug Ledford
2015-07-09 22:53 ` Jason Gunthorpe
2015-07-10 13:22 ` Tom Talpey
[not found] ` <559FC710.1050307-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-07-10 16:11 ` Jason Gunthorpe
2015-07-10 17:56 ` Doug Ledford
2015-07-10 18:34 ` Chuck Lever
2015-07-10 18:42 ` Tom Talpey
[not found] ` <55A01225.9000000-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-07-10 19:54 ` Jason Gunthorpe
2015-07-10 20:48 ` Jason Gunthorpe
[not found] ` <20150710195420.GA31500-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-10 22:33 ` Doug Ledford
2015-07-11 10:17 ` 'Christoph Hellwig'
[not found] ` <20150711101736.GA14741-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-13 16:57 ` Jason Gunthorpe
2015-07-14 7:25 ` 'Christoph Hellwig'
2015-07-14 9:05 ` Sagi Grimberg
2015-07-14 15:35 ` 'Christoph Hellwig'
2015-07-14 17:26 ` Jason Gunthorpe
[not found] ` <20150714172655.GB24403-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-15 7:10 ` Sagi Grimberg
2015-07-10 22:30 ` Doug Ledford
2015-07-10 20:57 ` Jason Gunthorpe
[not found] ` <20150710205706.GA7883-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-10 22:27 ` Doug Ledford
[not found] ` <20150710233417.GA8919@obsidianresearch.com>
[not found] ` <20150710233417.GA8919-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-11 3:10 ` Doug Ledford
[not found] ` <55A0891F.4050105-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-07-13 17:18 ` Jason Gunthorpe
2015-07-13 22:23 ` Tom Talpey
2015-07-11 16:37 ` Steve Wise
[not found] ` <CCB6E837-88FF-4DBB-976D-4CF56396A1A1-/Yg/VP3ZvrM@public.gmane.org>
2015-07-12 10:46 ` Sagi Grimberg
[not found] ` <55A24571.60902-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-14 19:25 ` Steve Wise
2015-07-14 19:29 ` Jason Gunthorpe
[not found] ` <20150714192941.GA26292-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 19:32 ` Steve Wise
2015-07-14 19:37 ` Jason Gunthorpe
2015-07-14 19:55 ` 'Christoph Hellwig'
2015-07-14 20:10 ` Steve Wise
[not found] ` <20150714195511.GB7716-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-14 20:29 ` Jason Gunthorpe
2015-07-15 6:50 ` 'Christoph Hellwig'
[not found] ` <20150715065057.GA22113-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-15 19:12 ` Jason Gunthorpe
[not found] ` <20150715191257.GF23588-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-16 6:41 ` Jason Gunthorpe
2015-07-16 8:04 ` 'Christoph Hellwig'
[not found] ` <20150716080402.GC9093-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-16 16:13 ` Jason Gunthorpe
[not found] ` <20150714202943.GB26927-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 20:40 ` Steve Wise
2015-07-14 20:44 ` Jason Gunthorpe
[not found] ` <20150714204442.GD26927-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 20:54 ` Steve Wise
2015-07-14 20:59 ` Jason Gunthorpe
2015-07-14 20:50 ` Tom Talpey
2015-07-15 8:47 ` Sagi Grimberg
[not found] ` <55A61E38.20201-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-15 12:19 ` 'Christoph Hellwig'
[not found] ` <20150715121926.GB14993-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-15 19:17 ` Jason Gunthorpe
2015-07-14 20:46 ` Tom Talpey
2015-07-14 19:45 ` 'Christoph Hellwig'
[not found] ` <20150714194512.GA25887-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-14 19:57 ` Jason Gunthorpe
2015-07-14 19:58 ` Steve Wise
2015-07-14 20:41 ` Jason Gunthorpe
[not found] ` <20150714204145.GC26927-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 20:51 ` Steve Wise
2015-07-14 21:01 ` Steve Wise
2015-07-14 21:14 ` Jason Gunthorpe
2015-07-23 18:53 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A901C9A5-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-07-23 19:03 ` Steve Wise
2015-07-23 23:30 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A901DB80-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-07-23 23:53 ` Jason Gunthorpe
[not found] ` <20150723235310.GA20537-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-24 0:18 ` Hefty, Sean
2015-07-24 4:46 ` Jason Gunthorpe
[not found] ` <20150708203205.GA21847-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-08 20:37 ` 'Christoph Hellwig'
2015-07-09 8:47 ` Sagi Grimberg
2015-07-08 21:38 ` Tom Talpey
2015-07-08 23:36 ` Jason Gunthorpe
2015-07-09 11:02 ` Sagi Grimberg
[not found] ` <559E54AB.2010905-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-09 17:01 ` Jason Gunthorpe
2015-07-09 20:00 ` Tom Talpey
2015-07-09 21:16 ` Jason Gunthorpe
[not found] ` <20150709170142.GA21921-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-10 8:55 ` kernel memory registration (was: RDMA/core: Transport-independent access flags) Sagi Grimberg
[not found] ` <559F8881.7070308-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-10 16:35 ` Jason Gunthorpe
2015-07-11 10:31 ` 'Christoph Hellwig'
[not found] ` <20150711103153.GC14741-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-13 16:46 ` Jason Gunthorpe [this message]
[not found] ` <20150713164652.GC23832-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 8:24 ` kernel memory registration Sagi Grimberg
[not found] ` <55A4C73A.7080001-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-14 17:24 ` Jason Gunthorpe
2015-07-11 10:25 ` [PATCH V3 1/5] RDMA/core: Transport-independent access flags 'Christoph Hellwig'
2015-07-13 16:35 ` Jason Gunthorpe
2015-07-13 19:36 ` Tom Talpey
2015-07-13 20:15 ` Jason Gunthorpe
[not found] ` <20150713201538.GA11681-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-07-14 9:10 ` Sagi Grimberg
[not found] ` <55A4D20C.2000904-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-14 15:36 ` 'Christoph Hellwig'
[not found] ` <20150714153619.GC11026-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-14 15:47 ` Tom Talpey
2015-07-14 16:22 ` Jason Gunthorpe
2015-07-14 7:37 ` 'Christoph Hellwig'
2015-07-14 9:22 ` Sagi Grimberg
[not found] ` <55A4D4C6.6040907-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-14 12:12 ` Tom Talpey
2015-07-14 13:23 ` Sagi Grimberg
2015-07-14 14:45 ` Steve Wise
2015-07-14 15:40 ` 'Christoph Hellwig'
2015-07-08 8:11 ` 'Christoph Hellwig'
2015-07-06 7:58 ` Sagi Grimberg
[not found] ` <559A3536.3020807-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-06 14:39 ` Steve Wise
2015-07-05 23:22 ` [PATCH V3 2/5] RDMA/iser: Use transport independent MR allocation Steve Wise
[not found] ` <20150705231831.12029.80307.stgit-PBeJgSbIpn97NCTnQtmixQ@public.gmane.org>
2015-07-05 23:22 ` [PATCH V3 3/5] RDMA/isert: " Steve Wise
2015-07-05 23:22 ` [PATCH V3 4/5] svcrdma: " Steve Wise
2015-07-05 23:22 ` [PATCH V3 5/5] xprtrdma: " Steve Wise
2015-07-06 5:25 ` [PATCH V3 0/5] Transport-independent MRs Christoph Hellwig
[not found] ` <20150706052542.GB1109-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-07-06 14:24 ` Steve Wise
2015-07-07 9:01 ` 'Christoph Hellwig'
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