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From: Dennis Dalessandro <dennis.dalessandro@intel.com>
To: Max Gurtovoy <maxg@mellanox.com>,
	bvanassche@acm.org, jgg@mellanox.com, linux-rdma@vger.kernel.org,
	dledford@redhat.com, leon@kernel.org
Cc: 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: Mon, 18 May 2020 11:20:04 -0400	[thread overview]
Message-ID: <f2efe2df-14db-4e15-3807-f81b799cc0ec@intel.com> (raw)
In-Reply-To: <20200514120305.189738-1-maxg@mellanox.com>

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.

-Denny


  parent reply	other threads:[~2020-05-18 15:20 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 [this message]
2020-05-18 18:10   ` Jason Gunthorpe
2020-05-19 13:43     ` Dennis Dalessandro
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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