netdev - Re: [PATCH rdma-next 2/3] IB/mlx5: Create UMR QP just before first reg

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Message-ID: <09aab0b6-ed3f-4569-992b-ea5bfc1c2c32@linux.dev>
Date: Fri, 14 Jun 2024 03:12:59 +0800
From: Zhu Yanjun <yanjun.zhu@...ux.dev>
To: Leon Romanovsky <leon@...nel.org>, Jason Gunthorpe <jgg@...dia.com>
Cc: Jianbo Liu <jianbol@...dia.com>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
 Paolo Abeni <pabeni@...hat.com>, Saeed Mahameed <saeedm@...dia.com>,
 Tariq Toukan <tariqt@...dia.com>
Subject: Re: [PATCH rdma-next 2/3] IB/mlx5: Create UMR QP just before first
 reg_mr occurs

在 2024/6/14 2:06, Leon Romanovsky 写道:
> On Fri, Jun 07, 2024 at 02:30:03PM -0300, Jason Gunthorpe wrote:
>> On Mon, Jun 03, 2024 at 01:26:38PM +0300, Leon Romanovsky wrote:
>>> From: Jianbo Liu <jianbol@...dia.com>
>>>
>>> UMR QP is not used in some cases, so move QP and its CQ creations from
>>> driver load flow to the time first reg_mr occurs, that is when MR
>>> interfaces are first called.
>>
>> We use UMR for kernel MRs too, don't we?
> 
> Strange, I know that I answered to this email, but I don't see it in the ML.
> 
> As far as I checked, we are not. Did I miss something?

I have also found this problem. IMO, 2 reasons:
1. Delay in maillist. That is, there is a delay between a mail sent out 
and this mail appearing in maillist. We will find this mail in the 
maillist after some time.

2. sometimes, we forget to include maillist.^_^

Zhu Yanjun
> 
> Thanks
> 
>>
>> Jason