From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B670C369D7 for ; Wed, 23 Apr 2025 18:38:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=wWxVg46eMCFdiWQ6X6K5wh7BwyllE/TFgcnWyILw7vo=; b=K99/ftzt81kpq/3Lq35j/X0l7A icUWA4ESGntS3r4tv99L4dAF2lFI22ygISij4Wuba8MMaqbLHqZQmAlFe/RQmnPZ9FTZUTOSJiNHV GelXZa/ueUfBpqYui9qBj3cWqCD0WbD/e/DbX9xSXYVTIkYbXhL8gcxazfBemUDxIxpcZ4PIc6/Mm JIz4Ql1i5mPyleuKe2H2LCqTqS7XvVNHyXrE+ywBuaGeqNRzdjWWU/LCT8Lyt+rrd4U3GQVE9Y959 15CYISx2GiFGnl87LwHZu0q8WYWnq3al2FS7dSlmcu5uujb+bOV6tNncFSWB3VSVSvgAsQdkGECdU aMycVVjg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7ezd-0000000BbUz-03ks; Wed, 23 Apr 2025 18:38:45 +0000 Received: from mail-qt1-x830.google.com ([2607:f8b0:4864:20::830]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7dSQ-0000000BCn4-44Fk for linux-nvme@lists.infradead.org; Wed, 23 Apr 2025 17:00:24 +0000 Received: by mail-qt1-x830.google.com with SMTP id d75a77b69052e-4766cb762b6so1237361cf.0 for ; Wed, 23 Apr 2025 10:00:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; t=1745427621; x=1746032421; darn=lists.infradead.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=wWxVg46eMCFdiWQ6X6K5wh7BwyllE/TFgcnWyILw7vo=; b=mgYHez6XbGTzxHGdGw/LqrinWtdbKFLH/qRsJHyxM12sZjldaibRsCzA3aLM8nBowV 70e5Q1aEBYAOOpqGeWpOkx2UljOGYCfRrDuOBnQTF+C5FkgFY7KsfvQK4sor/fsp0aPN KVqkAk6ULvptzFhihImcb/SsNbkSBsKHTxhdseM9wuJjx8aOZqmDVA9FKC/1yBcKC+z9 /RT4+OKlH92ctUTCwanI3LzIqzhYYW5P4FuQZfxUxP6/sR0rEshPkcGigq108XZxok8j Zh0AmQiYw620I1AnWXSVNf5pBWdbqYsM2T7qa8e9+sJ880+sBIr0su7ooRkocmw132dT TB8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745427621; x=1746032421; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=wWxVg46eMCFdiWQ6X6K5wh7BwyllE/TFgcnWyILw7vo=; b=fW19MGlWrhR6cMc3ExNFuh8QHUHw6ABwdmwInB3WXTFi/r5ab6wFc6VO7aBgbXFYbK XkdatGBI7TBV7stw0/Q2fYNwUGCcmECjrCXIOVqko6IgFpXWSguClJsksdarvWeeKsm2 6gobYefvZiohIXikDYpbGR/xrGTwLZ2xuG3957o1nrNKjf5pWdMkQizPwAIvHpv4KeOX vgSbnJ8QOaoBn1jcdJPODXgb6i16XB/jwUDd2s9dCvmqPBnQPvdymtoy0EzY2SWaQwn+ nJxZ/cLTlUCHn7CHhdOxOJCQbeZnntunYAPOZpfnaty7UYShxug4kkbYjeevSJRQN4c6 jQ5w== X-Forwarded-Encrypted: i=1; AJvYcCUiY6HG/dliJ6lhRWmqIzZcFl0vDHPq1aqetwCQOrumECPRahQ4SAdKf5XfiwrDCmybg2SGHRb35lys@lists.infradead.org X-Gm-Message-State: AOJu0YwPdO3SKurowU7mnqQyGp1W/PwKSsofywH/c6sCbNjh67nMo22P ITfIq3ygdlFGu4hpMiJ6qtSg3e4lMgDeSDpXuaTU26E7sCfYolo6DHmbeM7kmMQ= X-Gm-Gg: ASbGncu8JEWvZxAYL3s/+PCZ9AxTHXV0Cfko0NcO2fd5TAES0BoEGdyBiiUejjk+IKi vir6tkFXDJ/JyVg1dtyOfmqY/fGgHYE6OyhMR6mlg7vY3YJX49mxtsyT7JS/Hbr4355h8Dvep3Y Po4sNeTGqspxzu86u6rvGGrBu2FT+XRnpXKh30m4e+9tzYGGF6hQmXOGo38I7Bs8AQORihftK/F q5A5ad2cOqzvTsxYW6iaKTJVcm/gB28VugQK8FQ2s9FG6gNJn5/n8Jw30G80gx5GtC0K/4raXxU Q8TLkAPPsmrLVV4Zt4BDwFMbYPiXtXLm7zuxcaLyLLa2K/R2iQs/c/p1lVLvGPBLBxwAO8KrShM JnOwAcWgmU22rcJNwRd54iRWdKopkJw== X-Google-Smtp-Source: AGHT+IHksHmB8zXVAbJv0K8R7XmlcjQan86yStXGt3YpvcZVpCrvagDTNNdOsaaJ2R0ZGC6sR1O+4g== X-Received: by 2002:a05:622a:118f:b0:47e:641:9665 with SMTP id d75a77b69052e-47e0641979dmr20773641cf.5.1745427621264; Wed, 23 Apr 2025 10:00:21 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-142-167-219-86.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.167.219.86]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6f2c2bfcfd0sm72347416d6.82.2025.04.23.10.00.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Apr 2025 10:00:20 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1u7dSO-00000007LHo-0vIz; Wed, 23 Apr 2025 14:00:20 -0300 Date: Wed, 23 Apr 2025 14:00:20 -0300 From: Jason Gunthorpe To: Christoph Hellwig Cc: Leon Romanovsky , Keith Busch , Marek Szyprowski , Jens Axboe , Jake Edge , Jonathan Corbet , Zhu Yanjun , Robin Murphy , Joerg Roedel , Will Deacon , Sagi Grimberg , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , =?utf-8?B?SsOpcsO0bWU=?= Glisse , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, Niklas Schnelle , Chuck Lever , Luis Chamberlain , Matthew Wilcox , Dan Williams , Kanchan Joshi , Chaitanya Kulkarni , Nitesh Shetty Subject: Re: [PATCH v9 23/24] nvme-pci: convert to blk_rq_dma_map Message-ID: <20250423170020.GI1213339@ziepe.ca> References: <7c5c5267cba2c03f6650444d4879ba0d13004584.1745394536.git.leon@kernel.org> <20250423092437.GA1895@lst.de> <20250423100314.GH48485@unreal> <20250423154712.GA32009@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250423154712.GA32009@lst.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250423_100023_009085_4EC701D1 X-CRM114-Status: GOOD ( 17.94 ) X-Mailman-Approved-At: Wed, 23 Apr 2025 11:34:49 -0700 X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Wed, Apr 23, 2025 at 05:47:12PM +0200, Christoph Hellwig wrote: > On Wed, Apr 23, 2025 at 01:03:14PM +0300, Leon Romanovsky wrote: > > On Wed, Apr 23, 2025 at 11:24:37AM +0200, Christoph Hellwig wrote: > > > I don't think the meta SGL handling is quite right yet, and the > > > single segment data handling also regressed. Totally untested > > > patch below, I'll try to allocate some testing time later today. > > > > Christoph, > > > > Can we please progress with the DMA patches and leave NVMe for later? > > NVMe is one the users for new DMA API, let's merge API first. > > We'll need to merge the block/nvme patches through the block tree > anyway to avoid merges from hell, so yes. RDMA has been having conflicts on the ODP patches too, so yeah we need a shared branch and this thing into each trees. I'd rely on Marek to make the shared branch and I'll take the RDMA parts on top. Thanks, Jason