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 9A542C3600B for ; Tue, 25 Mar 2025 16:53:44 +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=v6NsHOMRWFTrliJNfIkuFn1sRc8cJTevfMV6ugxpisw=; b=sWIWO7nCJGT9Sztbvxgk1rPDXY wNxprDWGzrKd1lk25+DewOh+IypC7ktqFmsz3MviORoNmLFJwIqxa9gkSTBSBv91Rpq+eSYP8FDgM cUfJ/lUc8XU/Gj47VFwdaWPAL+IwX+2FJ6BWI7vGCyh0+0wMfYeGcd/DCpKGJJVEtAovlZoFjhoro MWQ/wGfch+OeJDk1n3YaQZb0s6Ty2VXfZBGKq25UH1tfrFMJ0U99JRodydOS2UX7pTvdXUQBYCOeA /mb8/tk419x2/mnli6eWr81IxXmyj9mAPfiJAHtmqcfC71yghYxwZ5q4J01rqCEExsZDvLlnraOQ5 lGTWPhUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1tx7X4-00000006XmX-0rtB; Tue, 25 Mar 2025 16:53:42 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1tx5Tc-00000006EEG-43mG for linux-nvme@lists.infradead.org; Tue, 25 Mar 2025 14:42:02 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id C3543A4A725; Tue, 25 Mar 2025 14:36:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4707DC4CEE4; Tue, 25 Mar 2025 14:41:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742913719; bh=oJti1ermRV1uUgJ8pfTRGamayM8FuQAkNzrsrS5yAe8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ngMssWMXx+k8rjAGS+vZ41iCzKScU7HoG1cd+9tapyfHg4Qil/6pMj9dymbkVElx5 TfHngtwSqwgeCOEiqbXqQ4/7oBQ6SpuELO5d0Z0v98cKHmN60spAJqrYnwqcgIJW1+ UtswMpNtmAeS8qCW2H67yx2jhZcTg572DF8E9cBIAxzdFzZ3+mVBzlyHDnnNJBcFCL gNTmqwJCFUNMIOFG6/sUjHCBzGjZJBgpvg5a0VChAjAUm9ScR+R+ztSQpZuWPxEtVj O6j5iJZbrcFhxtdioLYqFkmCn9tQL1ros4DiQlqru1txpE0J4bVQ7RUSEc9TwwB944 SJiTsVHoVSSgg== Date: Tue, 25 Mar 2025 16:41:58 +0200 From: Leon Romanovsky To: Jason Gunthorpe Cc: Robin Murphy , Christoph Hellwig , Jens Axboe , Joerg Roedel , Will Deacon , Sagi Grimberg , Keith Busch , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?iso-8859-1?B?Suly9G1l?= Glisse , Andrew Morton , Jonathan Corbet , 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, Randy Dunlap Subject: Re: [PATCH v7 00/17] Provide a new two step DMA mapping API Message-ID: <20250325144158.GA4558@unreal> References: <20250220124827.GR53094@unreal> <1166a5f5-23cc-4cce-ba40-5e10ad2606de@arm.com> <20250302085717.GO53094@unreal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250325_074201_075564_2474ADD4 X-CRM114-Status: GOOD ( 11.14 ) 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 Tue, Mar 25, 2025 at 09:36:37AM -0300, Jason Gunthorpe wrote: > On Fri, Mar 21, 2025 at 04:05:22PM +0000, Robin Murphy wrote: <...> > > So what is it now, a layering violation in a hat with still no clear path to > > support SWIOTLB? > > I was under the impression Leon had been testing SWIOTLB? Yes, SWIOTLB works and Christoph said it more than once that he tested NVMe conversion patches and they worked. Thanks