Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 11 Jul 2023 07:04:45 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Jakub Kicinski <kuba@kernel.org>
Cc:     Christoph Hellwig <hch@lst.de>, Jason Gunthorpe <jgg@ziepe.ca>,
        Mina Almasry <almasrymina@google.com>,
        John Hubbard <jhubbard@nvidia.com>,
        Dan Williams <dan.j.williams@intel.com>,
        David Ahern <dsahern@kernel.org>,
        Jesper Dangaard Brouer <jbrouer@redhat.com>,
        brouer@redhat.com, Alexander Duyck <alexander.duyck@gmail.com>,
        Yunsheng Lin <linyunsheng@huawei.com>, davem@davemloft.net,
        pabeni@redhat.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Lorenzo Bianconi <lorenzo@kernel.org>,
        Yisen Zhuang <yisen.zhuang@huawei.com>,
        Salil Mehta <salil.mehta@huawei.com>,
        Eric Dumazet <edumazet@google.com>,
        Sunil Goutham <sgoutham@marvell.com>,
        Geetha sowjanya <gakula@marvell.com>,
        Subbaraya Sundeep <sbhatta@marvell.com>,
        hariprasad <hkelam@marvell.com>,
        Saeed Mahameed <saeedm@nvidia.com>,
        Leon Romanovsky <leon@kernel.org>,
        Felix Fietkau <nbd@nbd.name>,
        Ryder Lee <ryder.lee@mediatek.com>,
        Shayne Chen <shayne.chen@mediatek.com>,
        Sean Wang <sean.wang@mediatek.com>,
        Kalle Valo <kvalo@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Jesper Dangaard Brouer <hawk@kernel.org>,
        Ilias Apalodimas <ilias.apalodimas@linaro.org>,
        linux-rdma@vger.kernel.org, linux-wireless@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org,
        Jonathan Lemon <jonathan.lemon@gmail.com>
Subject: Re: Memory providers multiplexing (Was: [PATCH net-next v4 4/5]
 page_pool: remove PP_FLAG_PAGE_FRAG flag)
Message-ID: <20230711050445.GA19323@lst.de>
References: <CAHS8izOySGEcXmMg3Gbb5DS-D9-B165gNpwf5a+ObJ7WigLmHg@mail.gmail.com> <5e0ac5bb-2cfa-3b58-9503-1e161f3c9bd5@kernel.org> <CAHS8izP2fPS56uXKMCnbKnPNn=xhTd0SZ1NRUgnAvyuSeSSjGA@mail.gmail.com> <ZKNA9Pkg2vMJjHds@ziepe.ca> <CAHS8izNB0qNaU8OTcwDYmeVPtCrEjTTOhwCHtVsLiyhXmPLsXQ@mail.gmail.com> <ZKxDZfVAbVHgNgIM@ziepe.ca> <CAHS8izO3h3yh=CLJgzhLwCVM4SLgf64nnmBtGrXs=vxuJQHnMQ@mail.gmail.com> <ZKyZBbKEpmkFkpWV@ziepe.ca> <20230711042708.GA18658@lst.de> <20230710215906.49514550@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230710215906.49514550@kernel.org>
User-Agent: Mutt/1.5.17 (2007-11-01)
Precedence: bulk

On Mon, Jul 10, 2023 at 09:59:06PM -0700, Jakub Kicinski wrote:
> On Tue, 11 Jul 2023 06:27:08 +0200 Christoph Hellwig wrote:
> > Not going to comment on the rest of this as it seems bat shit crazy
> > hacks for out of tree junk.  Why is anyone even wasting time on this?
> 
> Noob question - how does RDMA integrate with the out of tree junk?
> AFAIU it's possible to run the "in-tree" RDMA stack and get "GPU
> direct".

I don't care and it has absolutel no business being discussed here.

FYI at leat iWarp is a totally open standard.