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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 18464C8303F for ; Thu, 28 Aug 2025 13:39:11 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 660708E001C; Thu, 28 Aug 2025 09:39:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6112D8E0006; Thu, 28 Aug 2025 09:39:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4B1F98E001C; Thu, 28 Aug 2025 09:39:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 3842C8E0006 for ; Thu, 28 Aug 2025 09:39:10 -0400 (EDT) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id D72F7138FE2 for ; Thu, 28 Aug 2025 13:39:09 +0000 (UTC) X-FDA: 83826272418.07.D316B94 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2057.outbound.protection.outlook.com [40.107.223.57]) by imf07.hostedemail.com (Postfix) with ESMTP id 00D7B40008 for ; Thu, 28 Aug 2025 13:39:06 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b="Z70A6z/H"; arc=pass ("microsoft.com:s=arcselector10001:i=1"); spf=pass (imf07.hostedemail.com: domain of jgg@nvidia.com designates 40.107.223.57 as permitted sender) smtp.mailfrom=jgg@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1756388347; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=m7AfCSXAadbxG/aew2Ojhvg4gXP7xfhklC/4unfqPHY=; b=7A5c/tqviUAl/0gTYIMesQL7KpwneNQ9Z2+J/v5099cMlWSkoVg8mR5CQ+G9GGVKLxo+KO +Zzp4ppizWQtDeBiYGfIGe7iXNVaRMjpdgLe1wS3Y8ybd/XsDqyfpITwmZhAkFApGdk2V0 N3G9EXi/wm2xCYi5yMXVf/35Tn6iRus= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1756388347; a=rsa-sha256; cv=pass; b=Avi/Y8pgzwkpv77XBT7v7yGUDqXw7PaS9R7VmJ4S3jPoedUxnz1MWKaCU+Jdu/e3wzUrQU FqSNOEbLSM6bJGKYJaKvKLjdMON4NxHIerL7dCsJWUW6N9yOOYIQiQVLtd6trGG1AuivSL 5aErgXqp/zn7c8tNt+60z/TDwF0Oah8= ARC-Authentication-Results: i=2; imf07.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b="Z70A6z/H"; arc=pass ("microsoft.com:s=arcselector10001:i=1"); spf=pass (imf07.hostedemail.com: domain of jgg@nvidia.com designates 40.107.223.57 as permitted sender) smtp.mailfrom=jgg@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ev398O6wquh2AiQLxZk9PGdgprIHSlw2lsyFHLwb8nR93kzHtQZuQjIhav3rK6dmuK+bOLOqy0ukJ1OnAlJ4cy5IZGUemxjraE+fuHpFjSuNnZJ8FYrK4sASgJFkq3RNpqN2CTSlED8YXFqEg2hoSenJH2X1OrvVCkhRMF8o/0s/AehzD/K4E7ThGw9dtNdqRxYFLi7Pfo9ihRkKv87znCJ6vKKeHt7u2D3zG8bzu4MExZ8bgOQRq2+n8wAbBMauwOc/t28UazzoyB5Wn4mA7PEnDfnshvaZsCuC+t1gYX0beVcKJpCC/AzyQESl2j4H8I4u2Jkdw5gjp1tGwxbGeQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=m7AfCSXAadbxG/aew2Ojhvg4gXP7xfhklC/4unfqPHY=; b=trC59ke2qYBVJmiClsvssbtB4mDyban4Dp7fytHOzQbqaTwWpNik8VtUa5hGssGBz1H8pdGcjCqbf1yLkTUFE7oC3leFJYR2PUbRfG9W915s4zvgoTIG6E4nutsD0WOBhjFeyxWtkpegIgwwkqFlvI9+CAiAb70URSIpHVaAEkr50sfPu6H1l1QOJN1E4O2oOFy0VTpWGl9s4/F8Mzs0WWP9isJnzsyzUYD2Ly0YR2lfclMP0bIAa/DBU/lw+YHayHNOY/i8R0mJ/mcB6EgJeejiG8fekLB/NLiL+xerwIZRV7TA26h10kAijuibmqadbcVPhwgrdCfyY9HWhAjjHA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=m7AfCSXAadbxG/aew2Ojhvg4gXP7xfhklC/4unfqPHY=; b=Z70A6z/HNNeICWuf/sdzNklCgd/Cy5uQNbSeQnPp5JpQC1te/AofkwsM8juU4YC/aq6sBNNeSX5IrYYN6Adxg94dYkFurzEPmtsODMjsXIH8okOsQ/AVYfo1Di0XW8bbLJARRB/nKmSpO2XVC6OT8eiWvUeeZHUC3TB9ZBhyQasKuUu3BHLJAhsurx5Ii+gT2pNrErfzzed3JEEtiM/squA8YA7jl7gdQMA5uVPppL+xInuUmWL3xQdvzRzLm+p2anjhW4+DPWq+LTQffgLi3NUt1aVe7xtBQJH1AaTgEyM1KIq3/LcPSG9uRtfWaaHtbMlzWv07Puf5Lx6a/GW4sw== Received: from CH3PR12MB8659.namprd12.prod.outlook.com (2603:10b6:610:17c::13) by PH8PR12MB7327.namprd12.prod.outlook.com (2603:10b6:510:215::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9052.15; Thu, 28 Aug 2025 13:38:59 +0000 Received: from CH3PR12MB8659.namprd12.prod.outlook.com ([fe80::6eb6:7d37:7b4b:1732]) by CH3PR12MB8659.namprd12.prod.outlook.com ([fe80::6eb6:7d37:7b4b:1732%4]) with mapi id 15.20.9073.010; Thu, 28 Aug 2025 13:38:59 +0000 Date: Thu, 28 Aug 2025 10:38:57 -0300 From: Jason Gunthorpe To: Leon Romanovsky Cc: Marek Szyprowski , Leon Romanovsky , Abdiel Janulgue , Alexander Potapenko , Alex Gaynor , Andrew Morton , Christoph Hellwig , Danilo Krummrich , iommu@lists.linux.dev, Jason Wang , Jens Axboe , Joerg Roedel , Jonathan Corbet , Juergen Gross , kasan-dev@googlegroups.com, Keith Busch , linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nvme@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-trace-kernel@vger.kernel.org, Madhavan Srinivasan , Masami Hiramatsu , Michael Ellerman , "Michael S. Tsirkin" , Miguel Ojeda , Robin Murphy , rust-for-linux@vger.kernel.org, Sagi Grimberg , Stefano Stabellini , Steven Rostedt , virtualization@lists.linux.dev, Will Deacon , xen-devel@lists.xenproject.org Subject: Re: [PATCH v4 05/16] iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys Message-ID: <20250828133857.GD9469@nvidia.com> References: <66e7cc6854e4e40278b598b38e0c4d49d7fcec91.1755624249.git.leon@kernel.org> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <66e7cc6854e4e40278b598b38e0c4d49d7fcec91.1755624249.git.leon@kernel.org> X-ClientProxiedBy: YT4PR01CA0354.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:fc::14) To CH3PR12MB8659.namprd12.prod.outlook.com (2603:10b6:610:17c::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR12MB8659:EE_|PH8PR12MB7327:EE_ X-MS-Office365-Filtering-Correlation-Id: 327bde10-38f8-4ed1-1028-08dde6383df7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?qyX7RmTJFt/trf+nELkaslku7hVi97mGwRrTyOzTuAD7y7pUkhh0J2DdclFx?= =?us-ascii?Q?UoI6wLfE+X/fHqopVxXxaRGcrv5lq8PB2XN6qW+u6bZR3qopEDG+in5UY7+m?= =?us-ascii?Q?2E0NT4a01/viv0z/nVT8CLjWigxAA6NQj4LXaHRUFlxSiTVveWX+pb2TCW/n?= =?us-ascii?Q?IiVC5E47ShiLZKE7oY/GKFJqGUl7d1cTKxWgTgrwnltQClVlH1OvB0zV6/sd?= =?us-ascii?Q?jVrdQzdMQH52Ex+g7HiAVYckVQZMICHWGcWzK27Ijp53lW3SMNgwwidibE+z?= =?us-ascii?Q?M5ua2KznnyItj+1wsPHLmcU4J8Uk8nxhPY3RhiBd3fRMJvqaEDmUeQs4yi1n?= =?us-ascii?Q?QT07c8qV7ZMKCNKFdI72Iw43pjlKLG7TRaOutiQxJBeEvvZRMvZlhhNGksdN?= =?us-ascii?Q?Fp+fqB+TuqMtiuJL6mZFqHc0DkMK69v4fd5TBqmDUpUfm0kid2bEcc+uxkK+?= =?us-ascii?Q?YMYpmXFbi8BNMlJnegsCg/IxZS6sty/ZD+3IatIJ1S9UVajVFjOnE01/7mKV?= =?us-ascii?Q?fXKLoLRXQXDYSVmw/nk2SK7qMEnxSP8AUL0We8VexlzxcL3B0o1GmdSX5jcE?= =?us-ascii?Q?xgjuYc/hUoqhAtPxwsbTVnEpHie3BjoHkrcC2jP/BbzVsJKO8mcdmiNZGu3l?= =?us-ascii?Q?QnU99623FTBrw06pwvp+mQ2EruBFFo4P1ezXaGTBaD5sNK2mA3ue/7LC2mtf?= =?us-ascii?Q?dVj24FtAyFL6Y1O7aDrnk0ysOBrv0EUyCsWqsAXMkEG8XH700yZdYb7DZxvQ?= =?us-ascii?Q?7xBc75xC/L2jTMgqqpdhWyAjaWj4NPOZQ6EGDNA55k7nrDhIZrNAMqzMns5P?= =?us-ascii?Q?qwgGq29xja6R2S4+chFRryNp7vjVqnslN4f3pH/u6HMPdwmyFcr5x8Nlk/nb?= =?us-ascii?Q?ObYf+b9ZOjnCdRgxt5ANktUKu+3YCBqb0tXoOxtBnSUi/k30noh+8MSl2Jul?= =?us-ascii?Q?usSlhPZ+OmO5UoAeyub9zTorkc2I7mBamYicF09Xp0WqRs468KIr7xUjFgka?= =?us-ascii?Q?vFHU3b6BMo6PaGIjQsbh/432X7SAg2phxLvrey0SJ0H5LcOok3+Mnn6KWLcS?= =?us-ascii?Q?kfFEL/Ydfhr5jiSJU5n46DXZFcmESGPzCTVgGDkXvhX0eYDToPiYUci0+mWv?= =?us-ascii?Q?6Cr1nEGpyl4P0hgoZc/rV43Ge5oft7nbE1hj1BjHyn7dH+q9WdpjlHQlNjVK?= =?us-ascii?Q?Rg+F8OUQPFeagcs3UrRdSNj2aLvBR51AItvE7eAI4Iz6WzmeEbw0I5n7uN8o?= =?us-ascii?Q?wf5HUjZHS4GK9BuOikUkeCtk8iHKPeulp2eOJfGeW6OvRXuEzeM4UhURpYyr?= =?us-ascii?Q?hG1V7RiF0T0Q9NNsGkHrRAyKd4zRJfdsNBz7tEfHJe6vzEpg7mJTKJei54Ad?= =?us-ascii?Q?R2GB4jrsjdiszV6HvqUhOFWCrZdPKmj9xcCU4ua+lMWMDLEVQ/luBBjST6Wq?= =?us-ascii?Q?TW5gUJl5o3g=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH3PR12MB8659.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(1800799024)(7416014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?itLD+5DwcFtLqSk9sUyLawPtsxRiLXpuZEl99bkg/2+zesenK4WOIS5Uxp2S?= =?us-ascii?Q?9uskNBEKQ9g0Lcp9B/aD06akTvgAZLXkWoYZPMH295aoMV90TBaA8/qx5y5D?= =?us-ascii?Q?hbdsmHkfCaHoz/MiPyuWIbQKcwoRtF1aZJXKNEf5D08pastXzJ8kkEWo5hR1?= =?us-ascii?Q?JGTDlXYOhtuzgs+92Yph4ILubenz+ooIjdNsEhUQUp6NNxGTkxqq0Y39LtN+?= =?us-ascii?Q?bfmkdODMGTqo/PkPSZmaKe8rzH5USK/uVFXCRHYog1g48EVDAa8ETrp+vTVk?= =?us-ascii?Q?hPo+sfHsZ+2936Ra8tI3RHwdjP8wseThBVcFKDf+jJNN7X0zHsSzJwW+RCs9?= =?us-ascii?Q?rI5MXK/NxTdiA35QZPuCFlD0XvEi2RyO6JcW2oPvrsrI11x+nZCzvU1PMmYQ?= =?us-ascii?Q?VyoLmCQ/F2Ft5elp8i00RUPKOfxOyKFr8u/BXU7pw22Q63HqtpuV/6EViE//?= =?us-ascii?Q?FvxGKBVOvAG/8MuIcFcguLp3yl4lNoh5RU+TmKqwWx0nYFcqJ4wZC5j3asS3?= =?us-ascii?Q?Q5Px0T2aVAXmslrKAhwf4D5z2u+xExEL9XywmiohQ7h2C6aMLkRwPHvsUAg3?= =?us-ascii?Q?OYoX53IUo/DFls1qILwmuNJL0YQ0QYP1ghLzDq63WLbzC9qKTQDVAFOkq70M?= =?us-ascii?Q?Q8S7OzHKaEDNN7jfkzTgFBzZrM2EaTWGR6Cp6+R2CuCUcasfTvYGGEbD30CW?= =?us-ascii?Q?Gz6RxH0WX5H46pdV3qklBnL5esy1TGmhV/4Nr9vm1mCKZ+Ixyufo4grqve0Y?= =?us-ascii?Q?b+NUxqHtwl23Nl5usDMqM5JcTb2k/vpEiLjYwsUHvC57RP+ZTIRNqTF1VIaa?= =?us-ascii?Q?BBSfiN0tFOhQYn+gFVlw6nweL7LL/vDiQtYh/0vP9oTDzbnfW2gr+VRwEb7J?= =?us-ascii?Q?A8nedaqu30CcPzdfVQUlDQngfviV4PeWpjEbZOpK6PJaelTznhGIOWtvkrLS?= =?us-ascii?Q?2huLl4duSSDA+qZi5zM/mxo5/79aCI+aNCmimBgMFoK3lVr7WdSthv1gCvo+?= =?us-ascii?Q?Lsu0zqg9TuhoI31XtNsyAyutnPxMLpS0aU0nrOLFFl4S0XDS4rNsF6UqHmPL?= =?us-ascii?Q?DjLF7tESM8Hkc6uG0HnlGyFquu3mFiixMNfzaqK8Cnh0OCei7nxWCVLV9UKY?= =?us-ascii?Q?/UcVOhS4ZheTXWw1KVOPh+J5DGEAjGI3EFcUaRXPSifY1WUffLwxwVeFPblr?= =?us-ascii?Q?0ET3zvpDHsKI1qNq/mjDa3gC3zjHwXPyg+QUMRJqb3unk6EpeO4pYBaXmMs9?= =?us-ascii?Q?dRaN0qVLxlKmPgtaewwdKrLpHqNCSl5l9Huy6hXjzGOyrP+5Pif3GW4O2Ld3?= =?us-ascii?Q?J4pBGtD0KilojbWY7JEPPoaGzxtLMeHuxmejp4qO9IU16R8pRnbOnfWCgc1z?= =?us-ascii?Q?RpqatsPHmGIUt+oGcVcAFZOWRhpOlFzW/j6RtsYVyctbrnPTwXUoNiWhu+re?= =?us-ascii?Q?HOskqN7Bkrh7+4/JKGx730gAqPEfi47jTP3f82HrK2kXkJ2p5L6iMhBB+VqR?= =?us-ascii?Q?KYcnQiw2/6oYH/j2w66+5EioqdBwK/KBn8kurncSJUoxV79oDfhYzvmp5ZF7?= =?us-ascii?Q?KuKeTvSfTtAk/fU8j+I=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 327bde10-38f8-4ed1-1028-08dde6383df7 X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB8659.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2025 13:38:59.0983 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 6rfKa8rVYKwrh5cW7XkPc0kzZEP71J5rSBMbqytNTa/OLLKC3oOSgUlFk8Cj7ZoO X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7327 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 00D7B40008 X-Stat-Signature: ofdhatz7yos6mmo18msx6n9txu1u3ixe X-Rspam-User: X-HE-Tag: 1756388346-758548 X-HE-Meta: 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 XEHj5UnM 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Aug 19, 2025 at 08:36:49PM +0300, Leon Romanovsky wrote: > From: Leon Romanovsky > > Rename the IOMMU DMA mapping functions to better reflect their actual > calling convention. The functions iommu_dma_map_page() and > iommu_dma_unmap_page() are renamed to iommu_dma_map_phys() and > iommu_dma_unmap_phys() respectively, as they already operate on physical > addresses rather than page structures. > > The calling convention changes from accepting (struct page *page, > unsigned long offset) to (phys_addr_t phys), which eliminates the need > for page-to-physical address conversion within the functions. This > renaming prepares for the broader DMA API conversion from page-based > to physical address-based mapping throughout the kernel. > > All callers are updated to pass physical addresses directly, including > dma_map_page_attrs(), scatterlist mapping functions, and DMA page > allocation helpers. The change simplifies the code by removing the > page_to_phys() + offset calculation that was previously done inside > the IOMMU functions. > > Signed-off-by: Leon Romanovsky > --- > drivers/iommu/dma-iommu.c | 14 ++++++-------- > include/linux/iommu-dma.h | 7 +++---- > kernel/dma/mapping.c | 4 ++-- > kernel/dma/ops_helpers.c | 6 +++--- > 4 files changed, 14 insertions(+), 17 deletions(-) This looks fine Reviewed-by: Jason Gunthorpe But related to other patches.. iommu_dma_map_phys() ends up like this: if (dev_use_swiotlb(dev, size, dir) && iova_unaligned(iovad, phys, size)) { if (attrs & DMA_ATTR_MMIO) return DMA_MAPPING_ERROR; phys = iommu_dma_map_swiotlb(dev, phys, size, dir, attrs); But attrs is passed all the way down to swiotlb_tbl_map_single(), maybe the DMA_ATTR_MMIO check should be moved there? There are a few call chains with this redundancy: dma_iova_link() -> iommu_dma_iova_link_swiotlb -> iommu_dma_iova_bounce_and_link -> iommu_dma_map_swiotlb -> swiotlb_tbl_map_single() iommu_dma_map_phys() -> iommu_dma_map_swiotlb -> swiotlb_tbl_map_single() dma_direct_map_phys() -> swiotlb_map() -> swiotlb_tbl_map_single() It makes alot of sense to put the check for MMIO when slots[].orig_addr is stored because that is the point where we start to require a pfn_to_page(). Jason