lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231215190126.1040fa12@kernel.org>
Date: Fri, 15 Dec 2023 19:01:26 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Shakeel Butt <shakeelb@...gle.com>
Cc: Mina Almasry <almasrymina@...gle.com>, 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>, Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
 Sumit Semwal <sumit.semwal@...aro.org>, "Christian König"
 <christian.koenig@....com>, Michael Chan <michael.chan@...adcom.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Alexei Starovoitov
 <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Jesper Dangaard
 Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, Wei
 Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, Clark Wang
 <xiaoning.wang@....com>, NXP Linux Team <linux-imx@....com>, Jeroen de
 Borst <jeroendb@...gle.com>, Praveen Kaligineedi <pkaligineedi@...gle.com>,
 Shailend Chand <shailend@...gle.com>, Yisen Zhuang
 <yisen.zhuang@...wei.com>, Salil Mehta <salil.mehta@...wei.com>, Jesse
 Brandeburg <jesse.brandeburg@...el.com>, Tony Nguyen
 <anthony.l.nguyen@...el.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, Marcin Wojtas <mw@...ihalf.com>, Russell
 King <linux@...linux.org.uk>, Sunil Goutham <sgoutham@...vell.com>, Geetha
 sowjanya <gakula@...vell.com>, Subbaraya Sundeep <sbhatta@...vell.com>,
 hariprasad <hkelam@...vell.com>, Felix Fietkau <nbd@....name>, John Crispin
 <john@...ozen.org>, Sean Wang <sean.wang@...iatek.com>, Mark Lee
 <Mark-MC.Lee@...iatek.com>, Lorenzo Bianconi <lorenzo@...nel.org>, Matthias
 Brugger <matthias.bgg@...il.com>, AngeloGioacchino Del Regno
 <angelogioacchino.delregno@...labora.com>, Saeed Mahameed
 <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, Horatiu Vultur
 <horatiu.vultur@...rochip.com>, UNGLinuxDriver@...rochip.com, "K. Y.
 Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>,
 Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>, Jassi Brar
 <jaswinder.singh@...aro.org>, Ilias Apalodimas
 <ilias.apalodimas@...aro.org>, Alexandre Torgue
 <alexandre.torgue@...s.st.com>, Jose Abreu <joabreu@...opsys.com>, Maxime
 Coquelin <mcoquelin.stm32@...il.com>, Siddharth Vadapalli
 <s-vadapalli@...com>, Ravi Gunasekaran <r-gunasekaran@...com>, Roger
 Quadros <rogerq@...nel.org>, Jiawen Wu <jiawenwu@...stnetic.com>, Mengyuan
 Lou <mengyuanlou@...-swift.com>, Ronak Doshi <doshir@...are.com>, VMware
 PV-Drivers Reviewers <pv-drivers@...are.com>, Ryder Lee
 <ryder.lee@...iatek.com>, Shayne Chen <shayne.chen@...iatek.com>, Kalle
 Valo <kvalo@...nel.org>, Juergen Gross <jgross@...e.com>, Stefano
 Stabellini <sstabellini@...nel.org>, Oleksandr Tyshchenko
 <oleksandr_tyshchenko@...m.com>, Andrii Nakryiko <andrii@...nel.org>,
 Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>,
 Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, Jiri Olsa
 <jolsa@...nel.org>, Stefan Hajnoczi <stefanha@...hat.com>, Stefano
 Garzarella <sgarzare@...hat.com>, Shuah Khan <shuah@...nel.org>, "
 Mickaël Salaün" <mic@...ikod.net>, Nathan Chancellor
 <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Bill
 Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, Jason
 Gunthorpe <jgg@...dia.com>, Willem de Bruijn
 <willemdebruijn.kernel@...il.com>
Subject: Re: [RFC PATCH net-next v1 4/4] net: page_pool: use netmem_t
 instead of struct page in API

On Fri, 15 Dec 2023 02:11:14 +0000 Shakeel Butt wrote:
> > 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.

What does "decouple" mean? Drivers should never convert netmem 
to pages. Either a path in the driver can deal with netmem,
i.e. never touch the payload, or it needs pages.

Perhaps we should aim to not export netmem_to_page(),
prevent modules from accessing it directly.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ