netdev - Re: [RFC PATCH net-next v1 4/4] net: page_pool: use netmem

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Message-ID: <20231215021114.ipvdx2bwtxckrfdg@google.com>
Date: Fri, 15 Dec 2023 02:11:14 +0000
From: Shakeel Butt <shakeelb@...gle.com>
To: Mina Almasry <almasrymina@...gle.com>
Cc: Yunsheng Lin <linyunsheng@...wei.com>, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org, bpf@...r.kernel.org, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
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Subject: Re: [RFC PATCH net-next v1 4/4] net: page_pool: use netmem_t instead
 of struct page in API

On Thu, Dec 14, 2023 at 08:27:55AM -0800, Mina Almasry wrote:
> On Thu, Dec 14, 2023 at 4:05 AM Yunsheng Lin <linyunsheng@...wei.com> wrote:
> >
[...]
> > I perfer the second one personally, as devmem means that it is not
> > readable from cpu.
> 
> From my POV it has to be the first one. We want to abstract the memory
> type from the drivers as much as possible, not introduce N new memory
> types and ask the driver to implement new code for each of them
> separately.
> 

Agree with Mina's point. Let's aim to decouple memory types from
drivers.