From: Jason Gunthorpe <jgg@ziepe.ca>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: "Mina Almasry" <almasrymina@google.com>,
linux-arch@vger.kernel.org,
"Willem de Bruijn" <willemdebruijn.kernel@gmail.com>,
linux-kselftest@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, "David Ahern" <dsahern@kernel.org>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
"Christian König" <christian.koenig@amd.com>,
linaro-mm-sig@lists.linaro.org,
"Eric Dumazet" <edumazet@google.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Shuah Khan" <shuah@kernel.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
linux-media@vger.kernel.org
Subject: Re: [RFC PATCH 00/10] Device Memory TCP
Date: Wed, 19 Jul 2023 20:24:51 -0300 [thread overview]
Message-ID: <ZLhww+P+7zhTTUk7@ziepe.ca> (raw)
In-Reply-To: <20230719105711.448f8cad@hermes.local>
On Wed, Jul 19, 2023 at 10:57:11AM -0700, Stephen Hemminger wrote:
> Naive idea.
> Would it be possible for process to use mmap() on the GPU memory and then
> do zero copy TCP receive some how? Or is this what is being proposed.
It could be possible, but currently there is no API to recover the
underlying dmabuf from the VMA backing the mmap.
Also you can't just take arbitary struct pages from any old VMA and
make them "netmem"
Jason
next prev parent reply other threads:[~2023-07-19 23:24 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-10 22:32 [RFC PATCH 00/10] Device Memory TCP Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 01/10] dma-buf: add support for paged attachment mappings Mina Almasry
2023-07-11 7:59 ` Christian König
2023-07-11 11:44 ` Mina Almasry
2023-07-11 12:13 ` Christian König
2023-07-10 22:32 ` [RFC PATCH 02/10] dma-buf: add support for NET_RX pages Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 03/10] dma-buf: add support for NET_TX pages Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 04/10] net: add support for skbs with unreadable frags Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 05/10] tcp: implement recvmsg() RX path for devmem TCP Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 06/10] net: add SO_DEVMEM_DONTNEED setsockopt to release RX pages Mina Almasry
2023-07-16 23:57 ` Andy Lutomirski
2023-07-17 2:06 ` Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 07/10] tcp: implement sendmsg() TX path for for devmem tcp Mina Almasry
2023-07-10 22:32 ` [RFC PATCH 08/10] selftests: add ncdevmem, netcat for devmem TCP Mina Almasry
2023-07-10 22:33 ` [RFC PATCH 09/10] memory-provider: updates core provider API " Mina Almasry
2023-07-10 22:33 ` [RFC PATCH 10/10] memory-provider: add dmabuf devmem provider Mina Almasry
2023-07-17 2:41 ` [RFC PATCH 00/10] Device Memory TCP Andy Lutomirski
2023-07-18 17:32 ` Jakub Kicinski
2023-07-18 17:36 ` Mina Almasry
2023-07-18 18:06 ` Jason Gunthorpe
2023-07-18 18:15 ` Jakub Kicinski
2023-07-18 18:20 ` David Ahern
2023-07-18 18:29 ` Jakub Kicinski
2023-07-18 22:35 ` David Ahern
2023-07-18 22:45 ` Jakub Kicinski
2023-07-19 15:10 ` Mina Almasry
2023-07-19 17:57 ` Stephen Hemminger
2023-07-19 23:24 ` Jason Gunthorpe [this message]
2023-07-27 11:40 ` [Linaro-mm-sig] " Christian König
2023-07-19 20:36 ` Jakub Kicinski
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