From: Yuval Shaia <yuval.shaia@oracle.com>
To: Ira Weiny <ira.weiny@intel.com>
Cc: dledford@redhat.com, jgg@ziepe.ca, leon@kernel.org,
monis@mellanox.com, parav@mellanox.com, danielj@mellanox.com,
kamalheib1@gmail.com, markz@mellanox.com,
swise@opengridcomputing.com, johannes.berg@intel.com,
willy@infradead.org, michaelgur@mellanox.com, markb@mellanox.com,
dan.carpenter@oracle.com, bvanassche@acm.org, maxg@mellanox.com,
israelr@mellanox.com, galpress@amazon.com, denisd@mellanox.com,
yuvalav@mellanox.com, dennis.dalessandro@intel.com,
will@kernel.org, ereza@mellanox.com, jgg@mellanox.com,
linux-rdma@vger.kernel.org,
Shamir Rabinovitch <srabinov7@gmail.com>
Subject: Re: [PATCH v1 00/24] Shared PD and MR
Date: Mon, 26 Aug 2019 12:51:26 +0300 [thread overview]
Message-ID: <20190826095126.GC3698@lap1> (raw)
In-Reply-To: <20190822165841.GA17588@iweiny-DESK2.sc.intel.com>
> >
> > >
> > > What is the "key" that allows a MR to be shared among 2 processes? Do you
> > > introduce some PD identifier? And then some {PDID, lkey} tuple is used to ID
> > > the MR?
> > >
> > > I assume you have to share the PD first and then any MR in the shared PD can be
> > > shared? If so how does the MR get shared?
> >
> > Sorry, i'm not following.
> > I think the term 'share' is somehow mistake, it is actually a process
> > 'imports' objects into it's context. And yes, the workflow is first to
> > import the PD and then import the MR.
>
> Ok fair enough but the title of the thread is "Sharing PD and MR" so I used the
You are right, my bad, will change the cover letter and some commit
messages accordingly.
> term Share. And I expect that any random process can't import objects to which
> the owning process does not allow them to right?
>
> I mean you can't just have any process grab a PD and MR and start using it. So
> I assume there is some "sharing" by the originating process.
Any process that connects to the socket that the SCM_RIGHT message is
relayed on. I guess that if this mechanism exist then importing the actual
objects is just a supplemental service.
>
> >
next prev parent reply other threads:[~2019-08-26 9:52 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 14:21 [PATCH v1 00/24] Shared PD and MR Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 01/24] RDMA/uverbs: uobj_get_obj_read should return the ib_uobject Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 02/24] RDMA/uverbs: Delete the macro uobj_put_obj_read Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 03/24] RDMA/nldev: ib_pd can be pointed by multiple ib_ucontext Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 04/24] IB/{core,hw}: ib_pd should not have ib_uobject pointer Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 05/24] IB/core: ib_uobject need HW object reference count Yuval Shaia
2019-08-21 14:53 ` Jason Gunthorpe
2019-08-27 16:28 ` Yuval Shaia
2019-08-27 18:18 ` Jason Gunthorpe
2019-08-21 14:21 ` [PATCH v1 06/24] IB/uverbs: Helper function to initialize ufile member of uverbs_attr_bundle Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 07/24] IB/uverbs: Add context import lock/unlock helper Yuval Shaia
2019-08-21 14:57 ` Jason Gunthorpe
2019-08-21 14:21 ` [PATCH v1 08/24] IB/verbs: Prototype of HW object clone callback Yuval Shaia
2019-08-21 14:59 ` Jason Gunthorpe
2019-08-21 14:21 ` [PATCH v1 09/24] IB/core: Install clone ib_pd in device ops Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 10/24] IB/mlx4: Add implementation of clone_pd callback Yuval Shaia
2019-08-21 14:59 ` Jason Gunthorpe
2019-08-21 14:21 ` [PATCH v1 11/24] IB/mlx5: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 12/24] RDMA/rxe: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 13/24] IB/uverbs: Add clone reference counting to ib_pd Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 14/24] IB/uverbs: Add PD import verb Yuval Shaia
2019-08-21 15:00 ` Jason Gunthorpe
2019-08-21 14:21 ` [PATCH v1 15/24] IB/mlx4: Enable import from FD verb Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 16/24] IB/mlx5: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 17/24] RDMA/rxe: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 18/24] IB/core: ib_mr should not have ib_uobject pointer Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 19/24] IB/core: Install clone ib_mr in device ops Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 20/24] IB/mlx4: Add implementation of clone_pd callback Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 21/24] IB/mlx5: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 22/24] RDMA/rxe: " Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 23/24] IB/uverbs: Add clone reference counting to ib_mr Yuval Shaia
2019-08-21 14:21 ` [PATCH v1 24/24] IB/uverbs: Add MR import verb Yuval Shaia
2019-08-21 14:50 ` [PATCH v1 00/24] Shared PD and MR Jason Gunthorpe
2019-08-22 8:50 ` Yuval Shaia
2019-08-21 23:37 ` Ira Weiny
2019-08-22 8:41 ` Yuval Shaia
2019-08-22 14:15 ` Doug Ledford
2019-08-26 9:35 ` Yuval Shaia
2019-08-22 16:58 ` Ira Weiny
2019-08-22 17:03 ` Jason Gunthorpe
2019-08-22 20:10 ` Weiny, Ira
2019-08-23 11:57 ` Jason Gunthorpe
2019-08-23 21:33 ` Weiny, Ira
2019-08-26 10:58 ` Yuval Shaia
2019-08-26 10:29 ` Yuval Shaia
2019-08-26 12:26 ` Jason Gunthorpe
2019-08-26 9:51 ` Yuval Shaia [this message]
2019-08-26 10:04 ` Yuval Shaia
2019-08-26 10:10 ` Yuval Shaia
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