From patchwork Wed Jan 18 18:00:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13106785 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6DE8C38147 for ; Wed, 18 Jan 2023 18:01:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230331AbjARSA5 (ORCPT ); Wed, 18 Jan 2023 13:00:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230181AbjARSAv (ORCPT ); Wed, 18 Jan 2023 13:00:51 -0500 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2062.outbound.protection.outlook.com [40.107.243.62]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BC68552AA; Wed, 18 Jan 2023 10:00:50 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=M0wBWJ5PLq7u65SEgYt76cVl9XecEOjRo5m+JyAiD1lpJ/3L+nBQuTzGn0U5tehiqFbwP9WCK0VmPFnFTmmDg5taSBf6gZCqUT2ypCpNPEFo2mZJXn5IUT9wFsZrXYKxaDqH/ENe4ODpIzkPVxEz2tpl5qu72nxbeih170IWToqNSgokjHCG7wLXsgKW26WjryCMRlTr4UySgtOqCIi5fVYRSGIRurJjPqbSP2OMQa6rc9IvtuQO7Z9DlfxDFEkiOgbYzgn7FwCAZ91lYFq5NHKE6eT2ptjVAyUGXBZnElBFujZ7GKFtjrU3QRitK5yAU72EvoWW9rNcgwmNNJOnyg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=hW/5mujLMwqrzVEZt7wBA4VSpYB7Lob2U3kTzSD4quE=; b=mYNdaHQSWoNrNpq41kqgmJvWo+v/BX19qun3XweTQCVUq6Yey1GpebsiBQgF+XsWmPNbbmOTtwjdSYIgQLP5O5VA62aW7SpMSLghstgnCFrzbTDb8lQ5Kec4Tu4HQkop2KnRBtR0oMUY7/zKJyhZ5TFaHnyKSZ8MmU2xfzxcUYXyGi4RC5wlO4B+jOeeyMkau3V7WHlMDkLRiJrxSKX5PGyaF4YqyqMo9/rLsuvKicP7freGhyYXtZQ3tm3/wf3tmrITZ0VI1/Qqe5JDmq7KAEe9j1rLiN27DxaGgMj4Q0MUDrQwq3gPQW24vnjQdkJxBDbKMkB6gnUSCaZY9zqV8Q== 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=hW/5mujLMwqrzVEZt7wBA4VSpYB7Lob2U3kTzSD4quE=; b=IIS52DBDnuzB6GfbVJQb6RssA1TqQPqIywi8Emj3mrgbbWu3HmLg0AUD0Mc2NfvgOraj9jEhtP9LPhE5F7+Rmwv2gV4yriBSTropqB1oaD68ZKFPLiHwyFWi9lPR8dpUfFRM48P2x4tSNlMg9BKsKVE/OSos08v10r2WqfRZcvQFKBGd10gDwJ5I08KtB2uNNOKJ+d4ojThvIAXkVVzj3pJqOM7Gt0M3UwAFyxe76jVH/CJIs10OWkJ4RIds8i5MueImrQp+uqgB6VebWZANxB39ZfmURxUY/1bF6g5bexdvKfYUVJ5JDhNLIpuC3sRl/ZozlvkM77tf/XJxB5E/nQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by IA1PR12MB7614.namprd12.prod.outlook.com (2603:10b6:208:429::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6002.13; Wed, 18 Jan 2023 18:00:47 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f8b0:df13:5f8d:12a]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f8b0:df13:5f8d:12a%9]) with mapi id 15.20.6002.013; Wed, 18 Jan 2023 18:00:47 +0000 From: Jason Gunthorpe To: Lu Baolu , Joerg Roedel , Kevin Tian , Matthew Rosato , Robin Murphy Cc: Alex Williamson , ath10k@lists.infradead.org, ath11k@lists.infradead.org, Christian Borntraeger , dri-devel@lists.freedesktop.org, iommu@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, linux-rdma@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-tegra@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, nouveau@lists.freedesktop.org, Niklas Schnelle , virtualization@lists.linux-foundation.org Subject: [PATCH v2 05/10] iommufd: Use GFP_KERNEL_ACCOUNT for iommu_map() Date: Wed, 18 Jan 2023 14:00:39 -0400 Message-Id: <5-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com> In-Reply-To: <0-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com> References: X-ClientProxiedBy: BLAPR03CA0072.namprd03.prod.outlook.com (2603:10b6:208:329::17) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|IA1PR12MB7614:EE_ X-MS-Office365-Filtering-Correlation-Id: 9212b8d5-7b00-4766-3780-08daf97dec20 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV2PR12MB5869.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(346002)(39860400002)(396003)(136003)(366004)(376002)(451199015)(6506007)(186003)(26005)(478600001)(6512007)(6486002)(6666004)(54906003)(316002)(110136005)(4326008)(66946007)(66556008)(8676002)(66476007)(36756003)(2616005)(41300700001)(8936002)(83380400001)(2906002)(7416002)(5660300002)(38100700002)(86362001)(4216001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9212b8d5-7b00-4766-3780-08daf97dec20 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jan 2023 18:00:45.6308 (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: 55MBwQPcT8/1g4nIe30PL0YyKmHQHK4QDIV6WRiXYMhdJmqH/hRVQGW0CN50XO91 X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7614 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org iommufd follows the same design as KVM and uses memory cgroups to limit the amount of kernel memory a iommufd file descriptor can pin down. The various internal data structures already use GFP_KERNEL_ACCOUNT. However, one of the biggest consumers of kernel memory is the IOPTEs stored under the iommu_domain. Many drivers will allocate these at iommu_map() time and will trivially do the right thing if we pass in GFP_KERNEL_ACCOUNT. Signed-off-by: Jason Gunthorpe Reviewed-by: Kevin Tian --- drivers/iommu/iommufd/pages.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c index 22cc3bb0c6c55a..f8d92c9bb65b60 100644 --- a/drivers/iommu/iommufd/pages.c +++ b/drivers/iommu/iommufd/pages.c @@ -457,7 +457,7 @@ static int batch_iommu_map_small(struct iommu_domain *domain, while (size) { rc = iommu_map(domain, iova, paddr, PAGE_SIZE, prot, - GFP_KERNEL); + GFP_KERNEL_ACCOUNT); if (rc) goto err_unmap; iova += PAGE_SIZE; @@ -502,7 +502,7 @@ static int batch_to_domain(struct pfn_batch *batch, struct iommu_domain *domain, rc = iommu_map(domain, iova, PFN_PHYS(batch->pfns[cur]) + page_offset, next_iova - iova, area->iommu_prot, - GFP_KERNEL); + GFP_KERNEL_ACCOUNT); if (rc) goto err_unmap; iova = next_iova;