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 X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58B67C64E7B for ; Mon, 30 Nov 2020 14:36:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E5D6E20684 for ; Mon, 30 Nov 2020 14:36:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="jj6htOtf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726904AbgK3Ofp (ORCPT ); Mon, 30 Nov 2020 09:35:45 -0500 Received: from mail-co1nam11on2074.outbound.protection.outlook.com ([40.107.220.74]:50296 "EHLO NAM11-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725933AbgK3Ofp (ORCPT ); Mon, 30 Nov 2020 09:35:45 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=M7MZL2y2Nx4iboytIP39F1seVpFUMbC0TrMD4rw/Vlusaibkg8SS7/Qw7EIwe9kfv9JvZ4ygOrUOIQlXzAGRFc0DEitrGQCx5FplRQYMSS1b1AuhR2XjDykZqBBXzuhWNaLDh5PxX+TOSyFDgkawZTro4Jdbl9yE+P1x9HyRehu4H7nq0jBOHKexO6uyElLwqBhlfesb1ye1mOOd5l5U762cshF9evefkYjES8FpbLHF/N466sluXrI9XFvXyL4qO9x9XtrRygr7DPuOmYR0pir7OXRAxPejnm/jnsKJROFdjX828hB3lev8IT81No0fVuVUfCjo+eCIcabZYyIOSw== 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-SenderADCheck; bh=/zEsFB6Wr0Kxu3CoN+H1sv7oV2ERgSlSUpQoYNhnSG4=; b=awXJLhL9q0pvbYeo8+oj8CFaeSnMyDOsBTjgde3MoPd94v7eL7ZadVQj9XWNx27Eju22wXyAWpJoFn3IjBZlDD/H1gVLaEnk9sYPzfWbGhJ7IpD7p/NXdQfOz/F4voanCIHETMUGcNMTLfu99J1KCfRZO1UqoQUUE7hfx7mvX1EZste6FbSE/tZzeN/SR4VfZpL9dG+/YzX7eG4P15auhaUUxAouCbyuuJVU7+d6dovBAQc9dWVdESJbcOdwtiHJN0JkvRSoNnQKkymdUKUvpmtwxoXbGTEywli4DFLQVyAqemT1okgFI7gIcvjBGzHMGIDtOGMvayMpKDM6BjA4GQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector2-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/zEsFB6Wr0Kxu3CoN+H1sv7oV2ERgSlSUpQoYNhnSG4=; b=jj6htOtfYXg5i0xhOz8mJbra/hETiLoKtXlkp4Nts/sugG4OpJqBuJKUoWSApdOsy38gxMy3FRMtwDBvq/0CCV9JmoL2sP/3DeIXV1lle+jj/QGJKp41UK2v6V2iPBL3njaW7W+sCaiQlQtSRg9c227G5jRpcddN0qZIbNJlO3U= Authentication-Results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=amd.com; Received: from DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) by DM5PR12MB1866.namprd12.prod.outlook.com (2603:10b6:3:10c::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3611.20; Mon, 30 Nov 2020 14:34:53 +0000 Received: from DM5PR12MB1355.namprd12.prod.outlook.com ([fe80::d95e:b9d:1d6a:e845]) by DM5PR12MB1355.namprd12.prod.outlook.com ([fe80::d95e:b9d:1d6a:e845%12]) with mapi id 15.20.3611.025; Mon, 30 Nov 2020 14:34:53 +0000 Subject: Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory To: Jason Gunthorpe , Peter Xu Cc: Cornelia Huck , kvm@vger.kernel.org, Alex Williamson References: <0-v1-331b76591255+552-vfio_sme_jgg@nvidia.com> <20201105233949.GA138364@xz-x1> <20201116155341.GL917484@nvidia.com> <02bd74bb-b672-da91-aae7-6364c4bf555f@amd.com> <20201116232033.GR917484@nvidia.com> <20201117155757.GA13873@xz-x1> <57f51f08-1dec-e3d6-b636-71c8a00142fb@amd.com> <20201117181754.GC13873@xz-x1> <20201126201339.GA552508@nvidia.com> From: Tom Lendacky Message-ID: Date: Mon, 30 Nov 2020 08:34:51 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <20201126201339.GA552508@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: SA9PR13CA0147.namprd13.prod.outlook.com (2603:10b6:806:27::32) To DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [10.236.30.118] (165.204.77.1) by SA9PR13CA0147.namprd13.prod.outlook.com (2603:10b6:806:27::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3632.9 via Frontend Transport; Mon, 30 Nov 2020 14:34:52 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 06ef3abf-6ca1-4cb9-3040-08d8953d19d4 X-MS-TrafficTypeDiagnostic: DM5PR12MB1866: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8273; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: PhnqiCPAyyNFSBwzVJmfIxncByz33jDqRCGmSKUq9JApMgXQkryMCyK2faFPrQdui02pJvdtbVy3f/uUExE6iUzKimlR+Xxd41q7OAkcrlpamtsPttWPc7jcc9puU2oX28m84tjjreqNgXlkr/sKGb+fYQQKAuSjj6ym8ih+8mHPqDDDZOghWdU+Il/cmcEdLESCbukob5Hfl+mAVVeDTPfAOMkoyFXgF9iAtrUB7aVHGFzabYmfsjE4kgTqIcphMWPO4ZvRYQFV9w/O5ObMpaIS4JK6s1el0bYWBZtZ2IVFTIlfD5ze/bU+pbhpwE2X7WPVyAh5kFNjl/sjPc79z+Fy0hGRbMNUP7tGnMa/purezb1IkKuLyvk0Jcppwml3 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM5PR12MB1355.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(39860400002)(346002)(376002)(396003)(136003)(2616005)(31696002)(86362001)(956004)(31686004)(83380400001)(316002)(66556008)(66476007)(26005)(52116002)(16576012)(66946007)(54906003)(110136005)(4744005)(53546011)(186003)(6486002)(2906002)(16526019)(36756003)(8676002)(5660300002)(8936002)(4326008)(478600001)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?utf-8?B?U0VPK0ROaWFVeERqdDdXRXJFT2kweGx0cCtva1lISzZXUmtKeFVTZm5hL0c5?= =?utf-8?B?Y3JDRjBFbjJpZ3dzY1VJMmNVbDhYdldwK092S2dKRVdwOXlEemhibVlzZ2xV?= =?utf-8?B?Tm9sOUZZNHdRQzJEOEdWWUJYS0tMZWwyUnVGT05lckxBNHBobGJKc052VTR4?= =?utf-8?B?d3YrWWVocUMrdnFDVElYbDFxVEJTOG5ZVS9jNDNOSzRvUDRicUl1Q3V4RDRD?= =?utf-8?B?cjd2OE9pL2lvRlB0L1pYVjhmQTZRRi9vZkNOVGJtMXpyWnNQeXErS0hoV3JE?= =?utf-8?B?SE93Wm5Hb3hjWnZERXcxRVZ2cWxIUU5Gc0tZcEZRWk1IZGNKZ2cza1Y4R01m?= =?utf-8?B?cFFPUnBleXdxVWtsQkFHczRRTzVqNnZzME5WT2s5Rlo5a3I4eElMMmlvSnlK?= =?utf-8?B?OWIvQy9rY3JUOWk4Zzh0Yk9LR3VheHVHUGdTYXFtSVFrMFg5NHU2VVIyWEpH?= =?utf-8?B?TndxMHluS1NJYzI2S1NvdndWNmJreFpUSlFKTDRxclhQMzRPTnVObjZ5V3BO?= =?utf-8?B?Q2xIZGpTSzR0MkNmMEJPbkZJckVCK0NLbkdJT2NsM0UyVzkvbXQvZWNsQ2dI?= =?utf-8?B?d2NrMlRVWkVyM1g0dlVFMXZIWnJ5WjFNcjBTSVpNdUh1M1Awdmg1VVhZZk9E?= =?utf-8?B?SWI2aVVzb0d2V09ZcE1aREJTOGFyN3lQK2gwUHd2MU9YYzBhWXpJbnRpVEQw?= =?utf-8?B?WWRtUmR2RFN5NWFBdUExSk92cmU3L1FXN3piemE5cnJTU3hCc3doL1gxWUxt?= =?utf-8?B?UDhFQmY0QjVaOTNPaXhoQ1kxeHlUQlE3ZnRQWWpJbDhyRStXY3F2N0w1WWc4?= =?utf-8?B?dGdYSVFnZTg5aHhGU3I4dnVVN3Fxd0hUbHZMUVVoQVNrYWRFaFNoUGpiREZn?= =?utf-8?B?OCtXdWh3SjE5amUzWUdHNVU3Mm1sU1QrOFJEYytIbG9QdDFZNXhTRmNXdlRQ?= =?utf-8?B?VlppNmVPaEU1TEk4c3FGQ2VyTnhnU2loaUdZRGhQM29ZUDNRdkUzNi9SYVBV?= =?utf-8?B?bHc5dEZjKzlTaXgzM2Q0U21zbUFEaU1qK2xqcTdlUDBDVWpIb2ZoeVdmZjZr?= =?utf-8?B?VDVSVzFRTm1CZ2xnK3FDVjY5ZDMxeThETEhQZW5OR0hhZi9mc0o5WkY4Q3hw?= =?utf-8?B?Z0I0VXFLalVuZk1kUDFhKzlYUmhUV2Y0alhscFhGTGpaL2JVelhjOUZYTnN3?= =?utf-8?B?aytFR1ZpZUYzVGhYVTJ1NTlWa01WM0ZkZ1Z0Z2FaVUhkcDh4SVNMNTdKRldT?= =?utf-8?B?MmN1SlpjVzcvNGRJVy9pY0RsZDFBbGJtbiswSjhzYWM2akhJS2FmTGdsTUZX?= =?utf-8?Q?25SRORyK+kRXY=3D?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 06ef3abf-6ca1-4cb9-3040-08d8953d19d4 X-MS-Exchange-CrossTenant-AuthSource: DM5PR12MB1355.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Nov 2020 14:34:53.3394 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: yrOrvDppmIp20qsu5ds5Mieh7q5AguooqPSwIjJVFVP+cJhA6VuNp2s9wA3AFTroSTPKuBG9eEjo5KQvPVH2kg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR12MB1866 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 11/26/20 2:13 PM, Jason Gunthorpe wrote: > On Tue, Nov 17, 2020 at 01:17:54PM -0500, Peter Xu wrote: > >> Logically this patch should fix that, just like the dpdk scenario where mmio >> regions were accessed from userspace (qemu). From that pov, I think this patch >> should help. >> >> Acked-by: Peter Xu > > Thanks Peter > > Is there more to do here? I just did a quick, limited passthrough test of a NIC device (non SRIOV) for a legacy and an SEV guest and it all appears to work. I don't have anything more (i.e. SRIOV, GPUs, etc.) with which to test device passthrough. Thanks, Tom > > Jason >