linux-kernel - Re: [PATCH 13/18] mlx5: use netmem descriptor and APIs for page pool

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Message-ID: <CAHS8izOMkgiWnkixFLhJ1+7OWFbYv+N0am83jV_2cgBecj-jxw@mail.gmail.com>
Date: Mon, 26 May 2025 11:00:30 -0700
From: Mina Almasry <almasrymina@...gle.com>
To: Byungchul Park <byungchul@...com>
Cc: willy@...radead.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, kernel_team@...ynix.com, kuba@...nel.org, 
	ilias.apalodimas@...aro.org, harry.yoo@...cle.com, hawk@...nel.org, 
	akpm@...ux-foundation.org, davem@...emloft.net, john.fastabend@...il.com, 
	andrew+netdev@...n.ch, asml.silence@...il.com, toke@...hat.com, 
	tariqt@...dia.com, edumazet@...gle.com, pabeni@...hat.com, saeedm@...dia.com, 
	leon@...nel.org, ast@...nel.org, daniel@...earbox.net, david@...hat.com, 
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	rppt@...nel.org, surenb@...gle.com, mhocko@...e.com, horms@...nel.org, 
	linux-rdma@...r.kernel.org, bpf@...r.kernel.org, vishal.moola@...il.com
Subject: Re: [PATCH 13/18] mlx5: use netmem descriptor and APIs for page pool

On Mon, May 26, 2025 at 1:12 AM Byungchul Park <byungchul@...com> wrote:
>
> On Mon, May 26, 2025 at 12:08:58PM +0900, Byungchul Park wrote:
> > On Fri, May 23, 2025 at 10:13:27AM -0700, Mina Almasry wrote:
> > > On Thu, May 22, 2025 at 8:26 PM Byungchul Park <byungchul@...com> wrote:
> > > >
> > > > To simplify struct page, the effort to seperate its own descriptor from
> > > > struct page is required and the work for page pool is on going.
> > > >
> > > > Use netmem descriptor and APIs for page pool in mlx5 code.
> > > >
> > > > Signed-off-by: Byungchul Park <byungchul@...com>
> > >
> > > Just FYI, you're racing with Nvidia adding netmem support to mlx5 as
> > > well. Probably they prefer to take their patch. So try to rebase on
> > > top of that maybe? Up to you.
> > >
> > > https://lore.kernel.org/netdev/1747950086-1246773-9-git-send-email-tariqt@nvidia.com/
> > >
> > > I also wonder if you should send this through the net-next tree, since
> > > it seem to race with changes that are going to land in net-next soon.
> > > Up to you, I don't have any strong preference. But if you do send to
> > > net-next, there are a bunch of extra rules to keep in mind:
> > >
> > > https://docs.kernel.org/process/maintainer-netdev.html
>
> It looks like I have to wait for net-next to reopen, maybe until the
> next -rc1 released..  Right?  However, I can see some patches posted now.
> Hm..
>

We try to stick to 15 patches, but I've seen up to 20 sometimes get reviewed.

net-next just closed unfortunately, so yes you'll need to wait until
it reopens. RFCs are welcome in the meantime, and if you want to stick
to mm-unstable that's fine by me too, FWIW.

-- 
Thanks,
Mina