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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 A011EC433F5 for ; Tue, 14 Sep 2021 15:49:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84BDC61183 for ; Tue, 14 Sep 2021 15:49:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235315AbhINPvE (ORCPT ); Tue, 14 Sep 2021 11:51:04 -0400 Received: from mail-oln040093003011.outbound.protection.outlook.com ([40.93.3.11]:58808 "EHLO na01-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S235069AbhINPuw (ORCPT ); Tue, 14 Sep 2021 11:50:52 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=IVpYj/cHMGnqw3aZqz3CXub/GCyOE2J+snAOvN13PN21RYy+XKkUABQQgY9faJh3oIhurbFh8GVXyzWq7ysq5bSFE9jIss4vYw2r6IzDbjZaOCRmYe7yvbk4OHX52wTdxmh4bwj4XbTZTGdvL2T0jQ3crvPcSOjlbuivofTA+DTNvpD1LfHoeBCX2600QIis1DsonUDjwfRdcMa3V73EQRF7DgmaSNWFt9H4xYo5lkdoSEpz3a4FdgV6jDYMTbh1IoBz8PVDyBGsd0dme6CS2BlSj1UjNRZZ0y57AKMx2onrgR0irV/nzAJkOfEkdABExuPLrqETpa5pzMBDxGyYQg== 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; bh=F1OIXYjt1pXx+hzAgzU8rYjUG5YvunZwpM+CWxD9qNA=; b=A0gw6NlIUkBR2crB4hPIXSukhrZZo5gTUw8lReDD40jzWxeecOlQuElVzasG0f0PenKOn+KqekhvQ3r69AMCqiQ0Czuw2QZMqYrnY7A8KnDvdeajn3qlw0FeES2RlFy0cs/JJGHUMMYJ1mqkqZNYvVC1nI6d28ihqX7JqXWj7aP6pzakKe0BPhG0hyDPF94EVsgiDOXg80Vp2VvGmekkqYZqeT2OCNun9It1AEAgf6vCFEqGPonmHN/zr+kiO0NmykBfMsmqTyhWRZt4YdwiQYz+ZBqJOudCkidmjJiZ3gDPpl6vqL6PL5bJrho8b4nc+UpmeKNWBqLpO4VVWhEmUA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microsoft.com; dmarc=pass action=none header.from=microsoft.com; dkim=pass header.d=microsoft.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=F1OIXYjt1pXx+hzAgzU8rYjUG5YvunZwpM+CWxD9qNA=; b=aHx6tePt+bfF9MDFHVxp06gNV+r5+IlTaCjIuaEUdLR9q15DKvn/c91O5froQl2Bz+UOQkts25lPvRjEOj8peFlNIrDPpKWTdiFa4qDxJAFUq3LTN4YxvnXS6HCdmBP4veQPtsX2Lw3XQpwMHezvtHrl4DdPSzt7F9eTpjKY2wo= Received: from MN2PR21MB1295.namprd21.prod.outlook.com (2603:10b6:208:3e::25) by MN2PR21MB1167.namprd21.prod.outlook.com (2603:10b6:208:fe::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4544.1; Tue, 14 Sep 2021 15:49:29 +0000 Received: from MN2PR21MB1295.namprd21.prod.outlook.com ([fe80::d804:7493:8e3d:68d3]) by MN2PR21MB1295.namprd21.prod.outlook.com ([fe80::d804:7493:8e3d:68d3%9]) with mapi id 15.20.4478.015; Tue, 14 Sep 2021 15:49:29 +0000 From: Haiyang Zhang To: Tianyu Lan , KY Srinivasan , Stephen Hemminger , "wei.liu@kernel.org" , Dexuan Cui , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "x86@kernel.org" , "hpa@zytor.com" , "dave.hansen@linux.intel.com" , "luto@kernel.org" , "peterz@infradead.org" , "konrad.wilk@oracle.com" , "boris.ostrovsky@oracle.com" , "jgross@suse.com" , "sstabellini@kernel.org" , "joro@8bytes.org" , "will@kernel.org" , "davem@davemloft.net" , "kuba@kernel.org" , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "gregkh@linuxfoundation.org" , "arnd@arndb.de" , "hch@lst.de" , "m.szyprowski@samsung.com" , "robin.murphy@arm.com" , "brijesh.singh@amd.com" , Tianyu Lan , "thomas.lendacky@amd.com" , "pgonda@google.com" , "akpm@linux-foundation.org" , "kirill.shutemov@linux.intel.com" , "rppt@kernel.org" , "sfr@canb.auug.org.au" , "aneesh.kumar@linux.ibm.com" , "saravanand@fb.com" , "krish.sadhukhan@oracle.com" , "xen-devel@lists.xenproject.org" , "tj@kernel.org" , "rientjes@google.com" , Michael Kelley CC: "iommu@lists.linux-foundation.org" , "linux-arch@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "netdev@vger.kernel.org" , vkuznets , "parri.andrea@gmail.com" , "dave.hansen@intel.com" Subject: RE: [PATCH V5 12/12] net: netvsc: Add Isolation VM support for netvsc driver Thread-Topic: [PATCH V5 12/12] net: netvsc: Add Isolation VM support for netvsc driver Thread-Index: AQHXqW4FQ8MnKzPhAECYP0JKGb2C7qujrPRw Date: Tue, 14 Sep 2021 15:49:29 +0000 Message-ID: References: <20210914133916.1440931-1-ltykernel@gmail.com> <20210914133916.1440931-13-ltykernel@gmail.com> In-Reply-To: <20210914133916.1440931-13-ltykernel@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ActionId=ec0b8299-6ace-4e10-940d-c2bfa0583e06;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ContentBits=0;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=true;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Method=Standard;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=Internal;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2021-09-14T15:48:05Z;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microsoft.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 31614527-6ad5-46a5-dfcc-08d977973cd4 x-ms-traffictypediagnostic: MN2PR21MB1167: x-ms-exchange-transport-forked: True x-ld-processed: 72f988bf-86f1-41af-91ab-2d7cd011db47,ExtAddr x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5797; 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:MN2PR21MB1295.namprd21.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(33656002)(55016002)(9686003)(6506007)(508600001)(53546011)(26005)(921005)(54906003)(38100700002)(76116006)(122000001)(71200400001)(5660300002)(4326008)(186003)(82950400001)(66476007)(86362001)(110136005)(82960400001)(52536014)(8936002)(38070700005)(2906002)(8990500004)(316002)(83380400001)(7406005)(7416002)(64756008)(66556008)(66446008)(10290500003)(66946007)(7696005)(6636002)(8676002);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?VbT88gCNa2ZyW6pwzrLrtQuTO6cYgL+U6HzYbJCr1dL0GDoiBcGMdjEUJ2Vy?= =?us-ascii?Q?agTdnqM44iiB49YKumLaafY7Na7ZqkUYBBog+poLzvFVKmHGELz0ThYDVxUA?= =?us-ascii?Q?1OLzRK1z84a369F0ynOtDUsXFixwMKvIQAlPLCqvcfR29ElpahU0ZzAEkArD?= =?us-ascii?Q?z6nYGmqR3AED/WU/eS2ITwXIbUI76iS0bVWk0j0wv0chfiof3s+w1YRu4oai?= =?us-ascii?Q?UTaWt/MKmPBsYQS9pS+kShafgw9N1HUOU0cvHZOceelBOV+naLz8TmRE3EjP?= =?us-ascii?Q?YFW21N/d1ECqhu0jCzr50Aec0sdl0DLmsDqDHt6UukRSramMmR0zYiKLW11X?= =?us-ascii?Q?DAaF2oZyb4Q1sFIR8TW/fd66c7XAwgejZiSU9bEPIho1n7eN7BkcDrx2pZy7?= =?us-ascii?Q?NUwvIhzVYnYMn0mYH/HfUCMZ8PBtRZnO6fFEoTJ3SKeYPY3ySbKYhY0qW2XC?= =?us-ascii?Q?QmV/K7+3eBf5JAZY6T4FvplEzu3RlOL0MO0bbwLifI+wsBpTxnI+JDm5lae/?= =?us-ascii?Q?dy/LA54thkcXlnQcZwd/woHuhjXcyCKoaMDk5oxKba3E579urw1bVTBFDteN?= =?us-ascii?Q?Elc0EAGxtIUT/5M17mlVQo8DXc8kPToL3ShQuw/oXi1mWsPVUw4MRgIQtth7?= =?us-ascii?Q?eGTAhP4R+xLDAIb0GPbyK6S4fI/4k4Vg0rxpsnEDjhQnoBp9OcKMFWM1e0md?= =?us-ascii?Q?5fN2aEIbTv9oTRm3Wcnxdsn4rXJRZsukGJiK1yIuubdLREIF1WfQ2oPgj7D3?= =?us-ascii?Q?7oGWz/lsw2/pcKKQja3ZdNVoYm3DEwl3razbo+1IO0u7lPys6A9EMIoTd7L2?= =?us-ascii?Q?qZOmMFCu69PAmRuBtONteSDKCzJFcnGb+2DEseIukuSCKb3egenv5T4cVYz1?= =?us-ascii?Q?MQ5ULFcnLRaS1lKI+8qqL3j5e5vSY3VFKRVbtPoph5OfihjsS5QsiIx1pCN7?= =?us-ascii?Q?c+g36cdxL/wEv4PYNe9SM37lV5ufw7iUTaDL9C5CvNRRAvMp+JzxkCillp3Z?= =?us-ascii?Q?FGoo7m9dZ3ysfxtl27vazGUUl8HkadesHKQYdb6iCR31WTqPbthp7kgRkeZY?= =?us-ascii?Q?BwWeNCswSLWfJ66vAIDGmc3WR3gm23tmFQcnX7pWbY+inINiOnYISzC4DYja?= =?us-ascii?Q?m2n1OCrnDtp+NJBlj6B8qBpF/yeJqMWngWZiWU9WupLX/kHPeGsL3oX9e1kn?= =?us-ascii?Q?x3lnupCzCVLG0jkuuDVKqwb1zm24UMg8ubTgpdNjkBLskqEb4/CpJTJpNnpj?= =?us-ascii?Q?9kKrEpO/WfJ8eqaJo4J6GVPbrh+saoO1pZr/P/AfzxHaruq6Ww1OJBdK+4UU?= =?us-ascii?Q?k4x/jMEmn2EKUOgrHt4g7hxR?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR21MB1295.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 31614527-6ad5-46a5-dfcc-08d977973cd4 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Sep 2021 15:49:29.1987 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 7/zdvCskn8y0eguwZA7zusKyl7sZe+BazC1uD+5HblPJjRGcyQGn6dxnrXQ9O2+us+43B83NY99FRAlb///ZXg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR21MB1167 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org > -----Original Message----- > From: Tianyu Lan > Sent: Tuesday, September 14, 2021 9:39 AM > To: KY Srinivasan ; Haiyang Zhang > ; Stephen Hemminger ; > wei.liu@kernel.org; Dexuan Cui ; tglx@linutronix.de; > mingo@redhat.com; bp@alien8.de; x86@kernel.org; hpa@zytor.com; > dave.hansen@linux.intel.com; luto@kernel.org; peterz@infradead.org; > konrad.wilk@oracle.com; boris.ostrovsky@oracle.com; jgross@suse.com; > sstabellini@kernel.org; joro@8bytes.org; will@kernel.org; > davem@davemloft.net; kuba@kernel.org; jejb@linux.ibm.com; > martin.petersen@oracle.com; gregkh@linuxfoundation.org; arnd@arndb.de; > hch@lst.de; m.szyprowski@samsung.com; robin.murphy@arm.com; > brijesh.singh@amd.com; Tianyu Lan ; > thomas.lendacky@amd.com; pgonda@google.com; akpm@linux-foundation.org; > kirill.shutemov@linux.intel.com; rppt@kernel.org; sfr@canb.auug.org.au; > aneesh.kumar@linux.ibm.com; saravanand@fb.com; > krish.sadhukhan@oracle.com; xen-devel@lists.xenproject.org; > tj@kernel.org; rientjes@google.com; Michael Kelley > > Cc: iommu@lists.linux-foundation.org; linux-arch@vger.kernel.org; linux- > hyperv@vger.kernel.org; linux-kernel@vger.kernel.org; linux- > scsi@vger.kernel.org; netdev@vger.kernel.org; vkuznets > ; parri.andrea@gmail.com; dave.hansen@intel.com > Subject: [PATCH V5 12/12] net: netvsc: Add Isolation VM support for > netvsc driver >=20 > From: Tianyu Lan >=20 > In Isolation VM, all shared memory with host needs to mark visible > to host via hvcall. vmbus_establish_gpadl() has already done it for > netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_ > pagebuffer() stills need to be handled. Use DMA API to map/umap > these memory during sending/receiving packet and Hyper-V swiotlb > bounce buffer dma address will be returned. The swiotlb bounce buffer > has been masked to be visible to host during boot up. >=20 > Allocate rx/tx ring buffer via alloc_pages() in Isolation VM and map > these pages via vmap(). After calling vmbus_establish_gpadl() which > marks these pages visible to host, unmap these pages to release the > virtual address mapped with physical address below shared_gpa_boundary > and map them in the extra address space via vmap_pfn(). >=20 > Signed-off-by: Tianyu Lan > --- > Change since v4: > * Allocate rx/tx ring buffer via alloc_pages() in Isolation VM > * Map pages after calling vmbus_establish_gpadl(). > * set dma_set_min_align_mask for netvsc driver. >=20 > Change since v3: > * Add comment to explain why not to use dma_map_sg() > * Fix some error handle. > --- Reviewed-by: Haiyang Zhang Thank you!