From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Liran Liss <liranl-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
OFVWG <ofvwg-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: Further thoughts on uAPI
Date: Tue, 26 Apr 2016 10:54:50 -0600 [thread overview]
Message-ID: <20160426165450.GA3962@obsidianresearch.com> (raw)
In-Reply-To: <571F9968.3080501-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Tue, Apr 26, 2016 at 12:38:00PM -0400, Doug Ledford wrote:
> We're talking about two different things. I had the actual user space
> API on my mind when I wrote what I wrote (aka, libibverbs).
This will become very confusing if we don't focus on one thing..
How to fix libibverbs's API is a totally different problem, only very
loosely related to fixing the uAPI. Whatever new uAPI we come up with
must support current libibverbs with no loss during translation.
Tackling a verbs 2.0 along with the uAPI project is too big, IMHO.
It is pretty obvious to me we don't want to retain the current near
1:1 mapping of libverbs calls and kernel calls.
> There are only a few options for how to expose these things to user
> space (using the example I gave as a further talking point):
AFAIK Mellanox is working on benchmarking these options, so perhaps we
will have some data someday.
Jason
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next prev parent reply other threads:[~2016-04-26 16:54 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-20 1:25 Further thoughts on uAPI Jason Gunthorpe
[not found] ` <20160420012526.GA25508-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-04-20 4:54 ` Hefty, Sean
2016-04-21 12:32 ` Hefty, Sean
2016-04-21 13:35 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB044043-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-04-21 13:54 ` Hefty, Sean
2016-04-21 14:03 ` Leon Romanovsky
[not found] ` <20160421140347.GI26951-2ukJVAZIZ/Y@public.gmane.org>
2016-04-21 14:35 ` Hefty, Sean
2016-04-21 17:24 ` Jason Gunthorpe
[not found] ` <20160421172428.GA5102-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-04-22 16:35 ` Hefty, Sean
2016-04-24 20:11 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB045101-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-04-25 18:19 ` Jason Gunthorpe
[not found] ` <20160425181953.GC7675-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-04-25 19:16 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB04548E-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-04-25 20:53 ` Jason Gunthorpe
2016-04-26 13:18 ` Doug Ledford
[not found] ` <571F6A8C.9080100-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-04-26 14:33 ` Jason Gunthorpe
2016-04-24 14:15 ` Liran Liss
[not found] ` <AM3PR05MB141161876D5CA05B1993D20CB1610-LOZWmgKjnYgmsg45OnKo/9qRiQSDpxhJvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2016-04-26 14:19 ` Doug Ledford
[not found] ` <571F78F9.8010401-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-04-26 14:58 ` Jason Gunthorpe
[not found] ` <20160426145813.GB24104-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-04-26 16:38 ` Doug Ledford
[not found] ` <571F9968.3080501-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-04-26 16:54 ` Jason Gunthorpe [this message]
2016-04-26 16:46 ` Hefty, Sean
2016-04-25 16:29 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB0453F5-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-04-25 18:32 ` Jason Gunthorpe
[not found] ` <20160425183243.GD7675-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-04-25 18:51 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB045460-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-04-25 20:22 ` Jason Gunthorpe
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