From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C488255E3E; Tue, 25 Mar 2025 14:41:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742913720; cv=none; b=gNCdmFBXFVsl8OZonK2wuS6RgRsxa6vAx7FdyOTHhVxMssmNV7EMGCob6CEfrH+tHxs2vX29HI8Ft0RM9bs9HZVxDUyAJSJFhkI9dV5Az24XcuaUHI8J2Hl3lfsFKG0YkwuVgPz8a07ADh0n1lNjqB00/8sQW4lfb1IYLH2VB3Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742913720; c=relaxed/simple; bh=oJti1ermRV1uUgJ8pfTRGamayM8FuQAkNzrsrS5yAe8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rtX2ageJq/CIzSSHFqI49j3MngkvaXPlGdGnBk6Vitsem0gtLW1fFsun7ikSHz+z5fLu0AflJgkLTjnOeS1FdKFWmc1yj4w1I0lkB52nMoeZsmrgJO1b9QdhDTHUC3A4s52PDh/AOUX5C07dIEJh4+YCAoQECGjFUevCZvaBUpw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ngMssWMX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ngMssWMX" 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> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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