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

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Message-ID: <20240613192423.GK4966@unreal>
Date: Thu, 13 Jun 2024 22:24:23 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Zhu Yanjun <yanjun.zhu@...ux.dev>
Cc: Jason Gunthorpe <jgg@...dia.com>, 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

On Fri, Jun 14, 2024 at 03:12:59AM +0800, Zhu Yanjun wrote:
> 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.^_^

I replied on Jun, 7th.

Thanks

> 
> Zhu Yanjun
> > 
> > Thanks
> > 
> > > 
> > > Jason
> 
>