From: Christoph Hellwig <hch@infradead.org>
To: Pavel Begunkov <asml.silence@gmail.com>
Cc: "Christoph Hellwig" <hch@infradead.org>,
"David Wei" <dw@davidwei.uk>,
io-uring@vger.kernel.org, netdev@vger.kernel.org,
"Jens Axboe" <axboe@kernel.dk>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"David Ahern" <dsahern@kernel.org>,
"Mina Almasry" <almasrymina@google.com>,
"Stanislav Fomichev" <stfomichev@gmail.com>,
"Joe Damato" <jdamato@fastly.com>,
"Pedro Tammela" <pctammela@mojatatu.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
linaro-mm-sig@lists.linaro.org
Subject: Re: [PATCH v6 02/15] net: generalise net_iov chunk owners
Date: Wed, 30 Oct 2024 07:57:53 -0700 [thread overview]
Message-ID: <ZyJJcfQ-ldDtsfLN@infradead.org> (raw)
In-Reply-To: <9a14e132-6a13-4077-973d-b1eca417e563@gmail.com>
On Tue, Oct 29, 2024 at 04:35:16PM +0000, Pavel Begunkov wrote:
> I see, the reply is about your phrase about additional memory
> abstractions:
>
> "... don't really need to build memory buffer abstraction over
> memory buffer abstraction."
Yes, over the exsting memory buffer abstraction (dma_buf).
> If you mean internals, making up a dmabuf that has never existed in the
> picture in the first place is not cleaner or easier in any way. If that
> changes, e.g. there is more code to reuse in the future, we can unify it
> then.
I'm not sure what "making up" means here, they are all made up :)
> > with pre-registering the memry with the iommu to get good performance
> > in IOMMU-enabled setups.
>
> The page pool already does that just like it handles the normal
> path without providers.
In which case is basically is a dma-buf. If you'd expose it as such
we could actually use to communicate between subsystems in the
kernel.
next prev parent reply other threads:[~2024-10-30 14:57 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 18:52 [PATCH v6 00/15] io_uring zero copy rx David Wei
2024-10-16 18:52 ` [PATCH v6 01/15] net: prefix devmem specific helpers David Wei
2024-10-16 18:52 ` [PATCH v6 02/15] net: generalise net_iov chunk owners David Wei
2024-10-23 7:20 ` Christoph Hellwig
2024-10-23 14:34 ` Pavel Begunkov
2024-10-24 9:23 ` Christoph Hellwig
2024-10-24 14:23 ` Pavel Begunkov
2024-10-24 16:06 ` Christoph Hellwig
2024-10-24 16:40 ` Pavel Begunkov
2024-10-28 12:11 ` Christoph Hellwig
2024-10-29 16:35 ` Pavel Begunkov
2024-10-30 14:57 ` Christoph Hellwig [this message]
2024-10-16 18:52 ` [PATCH v6 03/15] net: page_pool: create hooks for custom page providers David Wei
2024-10-16 18:52 ` [PATCH v6 04/15] net: prepare for non devmem TCP memory providers David Wei
2024-10-16 18:52 ` [PATCH v6 05/15] net: page_pool: add ->scrub mem provider callback David Wei
2024-10-16 18:52 ` [PATCH v6 06/15] net: page pool: add helper creating area from pages David Wei
2024-10-16 18:52 ` [PATCH v6 07/15] net: page_pool: introduce page_pool_mp_return_in_cache David Wei
2024-10-16 18:52 ` [PATCH v6 08/15] net: add helper executing custom callback from napi David Wei
2024-10-21 14:25 ` Paolo Abeni
2024-10-21 15:49 ` Jens Axboe
2024-10-21 16:34 ` Pavel Begunkov
2024-10-21 17:16 ` Pavel Begunkov
2024-10-22 7:47 ` Paolo Abeni
2024-10-22 15:36 ` Pavel Begunkov
2024-10-16 18:52 ` [PATCH v6 09/15] io_uring/zcrx: add interface queue and refill queue David Wei
2024-10-21 15:33 ` Jens Axboe
2024-10-16 18:52 ` [PATCH v6 10/15] io_uring/zcrx: add io_zcrx_area David Wei
2024-10-21 15:35 ` Jens Axboe
2024-10-21 16:28 ` Pavel Begunkov
2024-10-21 16:29 ` Jens Axboe
2024-10-21 16:39 ` Pavel Begunkov
2024-10-16 18:52 ` [PATCH v6 11/15] io_uring/zcrx: implement zerocopy receive pp memory provider David Wei
2024-10-21 15:46 ` Jens Axboe
2024-10-16 18:52 ` [PATCH v6 12/15] io_uring/zcrx: add io_recvzc request David Wei
2024-10-21 16:05 ` Jens Axboe
2024-10-16 18:52 ` [PATCH v6 13/15] io_uring/zcrx: set pp memory provider for an rx queue David Wei
2024-10-21 16:30 ` Jens Axboe
2024-10-16 18:52 ` [PATCH v6 14/15] io_uring/zcrx: add copy fallback David Wei
2024-10-21 14:40 ` Paolo Abeni
2024-10-21 18:31 ` David Wei
2024-10-22 7:48 ` Paolo Abeni
2024-10-16 18:52 ` [PATCH v6 15/15] io_uring/zcrx: throttle receive requests David Wei
2024-10-21 16:36 ` Jens Axboe
2024-10-21 15:27 ` [PATCH v6 00/15] io_uring zero copy rx Jens Axboe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZyJJcfQ-ldDtsfLN@infradead.org \
--to=hch@infradead.org \
--cc=almasrymina@google.com \
--cc=asml.silence@gmail.com \
--cc=axboe@kernel.dk \
--cc=christian.koenig@amd.com \
--cc=davem@davemloft.net \
--cc=dri-devel@lists.freedesktop.org \
--cc=dsahern@kernel.org \
--cc=dw@davidwei.uk \
--cc=edumazet@google.com \
--cc=hawk@kernel.org \
--cc=io-uring@vger.kernel.org \
--cc=jdamato@fastly.com \
--cc=kuba@kernel.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-media@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pctammela@mojatatu.com \
--cc=stfomichev@gmail.com \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.