netdev - Re: [PATCH net-next v2 5/5] netmem: add netmem

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Message-ID: <20241111183549.48497b86@kernel.org>
Date: Mon, 11 Nov 2024 18:35:49 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>
Cc: netdev@...r.kernel.org, Pavel Begunkov <asml.silence@...il.com>, Willem
 de Bruijn <willemb@...gle.com>, Kaiyuan Zhang <kaiyuanz@...gle.com>,
 Samiullah Khawaja <skhawaja@...gle.com>, linux-kernel@...r.kernel.org,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon Horman
 <horms@...nel.org>, Jesper Dangaard Brouer <hawk@...nel.org>, Ilias
 Apalodimas <ilias.apalodimas@...aro.org>
Subject: Re: [PATCH net-next v2 5/5] netmem: add netmem_prefetch

On Thu,  7 Nov 2024 21:23:09 +0000 Mina Almasry wrote:
> prefect(page) is a common thing to be called from drivers. Add
> netmem_prefetch that can be called on generic netmem. Skips the prefetch
> for net_iovs.

Why would you ever need to prefetch a payload buffer?
Looks wrong..