netdev - Re: [PATCH net-next] page_pool: add DMA_ATTR_WEAK

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Message-ID: <20230419112411.52dc99c8@kernel.org>
Date:   Wed, 19 Apr 2023 11:24:11 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Alexander Lobakin <aleksander.lobakin@...el.com>
Cc:     <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <edumazet@...gle.com>, <pabeni@...hat.com>,
        <michael.chan@...adcom.com>, <hawk@...nel.org>,
        <ilias.apalodimas@...aro.org>
Subject: Re: [PATCH net-next] page_pool: add DMA_ATTR_WEAK_ORDERING on all
 mappings

On Wed, 19 Apr 2023 15:49:17 +0200 Alexander Lobakin wrote:
> And you do that 2 days before I send this: [0] :D
> Just jokin' :p

Ha! It's karma for not posting the netlink int stuff, yet :P

> Unconditional weak ordering seems reasonable to me as well. BTW, I've
> seen one driver converted to PP already, which manages DMA mappings on
> its own *solely* because it needs to map stuff with weak ordering =\
> It could be switched to PP builtin map handling thanks to this change
> (-100 locs).

Neat!  I hope it will unblock a number of conversions.