From: Dennis Dalessandro <dennis.dalessandro@intel.com>
To: Jason Gunthorpe <jgg@mellanox.com>
Cc: Max Gurtovoy <maxg@mellanox.com>,
bvanassche@acm.org, linux-rdma@vger.kernel.org,
dledford@redhat.com, leon@kernel.org, sagi@grimberg.me,
israelr@mellanox.com, shlomin@mellanox.com, "Marciniszyn,
Mike" <mike.marciniszyn@intel.com>
Subject: Re: [PATCH 0/8 v1] Remove FMR support from RDMA drivers
Date: Tue, 19 May 2020 09:43:14 -0400 [thread overview]
Message-ID: <03238a7d-d3f3-7859-deb9-dd0a04fbe9ed@intel.com> (raw)
In-Reply-To: <20200518181035.GM24561@mellanox.com>
On 5/18/2020 2:10 PM, Jason Gunthorpe wrote:
> On Mon, May 18, 2020 at 11:20:04AM -0400, Dennis Dalessandro wrote:
>> On 5/14/2020 8:02 AM, Max Gurtovoy wrote:
>>> This series removes the support for FMR mode to register memory. This ancient
>>> mode is unsafe and not maintained/tested in the last few years. It also doesn't
>>> have any reasonable advantage over other memory registration methods such as
>>> FRWR (that is implemented in all the recent RDMA adapters). This series should
>>> be reviewed and approved by the maintainer of the effected drivers and I
>>> suggest to test it as well.
>>>
>>> The tests that I made for this series (fio benchmarks and fio verify data):
>>> 1. iSER initiator on ConnectX-4
>>> 2. iSER initiator on ConnectX-3
>>> 3. SRP initiator on ConnectX-4 (loopback to SRP target)
>>> 4. SRP initiator on ConnectX-3
>>>
>>> Not tested:
>>> 1. RDS
>>> 2. mthca
>>> 3. rdmavt
>>
>> This will effectively kill qib which uses rdmavt. It's gonna have to be a
>> NAK from me.
>
> Are you objecting the SRP and iSER changes too?
No, just want to keep basic verbs support at least. NFS already dropped,
similarly we are ok with dropping it from SRP/iSER as a next step.
-Denny
next prev parent reply other threads:[~2020-05-19 13:43 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-14 12:02 [PATCH 0/8 v1] Remove FMR support from RDMA drivers Max Gurtovoy
2020-05-14 12:02 ` [PATCH 1/8] RDMA/mlx4: remove FMR support for memory registration Max Gurtovoy
2020-05-14 12:02 ` [PATCH 2/8] RDMA/rds: " Max Gurtovoy
2020-05-14 12:03 ` [PATCH 3/8] RDMA/mthca: " Max Gurtovoy
2020-05-14 12:03 ` [PATCH 4/8] RDMA/rdmavt: remove FMR " Max Gurtovoy
2020-05-14 12:03 ` [PATCH 5/8] RDMA/iser: Remove support for " Max Gurtovoy
2020-05-14 12:03 ` [PATCH 6/8] RDMA/srp: remove " Max Gurtovoy
2020-05-14 14:02 ` Bart Van Assche
2020-05-14 12:03 ` [PATCH 7/8] RDMA/core: remove FMR pool API Max Gurtovoy
2020-05-14 12:03 ` [PATCH 8/8] RDMA/core: remove FMR device ops Max Gurtovoy
2020-05-14 15:13 ` [PATCH 0/8 v1] Remove FMR support from RDMA drivers Aron Silverton
2020-05-14 18:18 ` santosh.shilimkar
2020-05-14 19:42 ` Max Gurtovoy
2020-05-14 22:23 ` Sagi Grimberg
2020-05-14 23:41 ` santosh.shilimkar
2020-05-15 16:52 ` Tom Talpey
2020-05-15 18:59 ` Sagi Grimberg
2020-05-17 10:51 ` Max Gurtovoy
2020-05-18 16:34 ` santosh.shilimkar
2020-05-15 0:37 ` Max Gurtovoy
2020-05-14 16:00 ` Gal Pressman
2020-05-17 10:37 ` Max Gurtovoy
2020-05-18 15:20 ` Dennis Dalessandro
2020-05-18 18:10 ` Jason Gunthorpe
2020-05-19 13:43 ` Dennis Dalessandro [this message]
2020-05-19 13:53 ` Jason Gunthorpe
2020-05-19 14:19 ` Leon Romanovsky
2020-05-19 14:26 ` Dennis Dalessandro
2020-05-19 14:30 ` Jason Gunthorpe
2020-05-19 14:37 ` Dennis Dalessandro
2020-05-23 22:08 ` Jason Gunthorpe
2020-05-24 1:27 ` Tom Talpey
2020-05-26 15:38 ` Dennis Dalessandro
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