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 ws5-mx01.kavi.com (ws5-mx01.kavi.com [34.193.7.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1CD42C77B6E for ; Wed, 12 Apr 2023 05:06:14 +0000 (UTC) Received: from lists.oasis-open.org (oasis.ws5.connectedcommunity.org [10.110.1.242]) by ws5-mx01.kavi.com (Postfix) with ESMTP id 864D82B362 for ; Wed, 12 Apr 2023 05:06:12 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 8066F9865B3 for ; Wed, 12 Apr 2023 05:06:12 +0000 (UTC) Received: from host09.ws5.connectedcommunity.org (host09.ws5.connectedcommunity.org [10.110.1.97]) by lists.oasis-open.org (Postfix) with QMQP id 73AB9986509; Wed, 12 Apr 2023 05:06:12 +0000 (UTC) Mailing-List: contact virtio-dev-help@lists.oasis-open.org; run by ezmlm List-ID: Sender: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 6279698650E; Wed, 12 Apr 2023 05:06:11 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=CnaxLqZ4Til/FwwIyIkfAf3XT2lDV/3iFNXdjBgdlQtIZglpgOTPPAI75CggDmgQ/6I6Cvnz90DHFOxOHCzabcxL4WVIkHe80Lg0DtDBmNANBKYNAbRPGCYSbkyuaCfXycZEKfzcc79lTsBaQ7dZCuvNeYbnqdUxBWv1YC2IlGH8juHMFjqrZmvGKPy5DHPFxIIjyyR3ScbleOePZQuJXebIUYneG4xm8nLmxd8Azuc/EX/Y4MeEtpLqm+D7caXC2XIGdeoAPdOKsHQ8xV5F5a9OhLOer9vKKBb/pRI2otv7ONpfahBJkWjNKweEL4XvKeU8Z+DKwZ3n93xbyuWcuw== 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=xhGNPU5lQBrX0twQUtL11rh5bEHucAcZvKTyXzoTwIg=; b=auBW9yjzoBX3C+gIOswhqs3JkOJehwxom0XObi7IL/x5g+SOsCKzHmF7th25W8TVNmOIk18W/lR2G3QqZejgDHXXO277LR6tUBo2fN8ajiTtxKlI6fjWN0QpVSVAiQc+W/PtIxvRBG4hOOJhBJZiTUJZK3Qf8uTm0aqdJ+KTGobSlQKx1TmBFecXi62tB+zAHxOfZyJ6mZ5n7RUSNLMfutN1EP4oKVaTr4shFDynKZ5/TKuYdET0SG2vk9mQ1S9zL72xKvWMV2+ekdyrKj6WDZllE2LTR8rxrjhqBnAMveUkZR9/ybdZXF+gpxsvhmC5OPKvQmCtgH8cC+NE1HwQaQ== 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 From: Parav Pandit To: "Michael S. Tsirkin" CC: "virtio-dev@lists.oasis-open.org" , "cohuck@redhat.com" , "virtio-comment@lists.oasis-open.org" , Shahaf Shuler , Satananda Burla Thread-Topic: [virtio-comment] Re: [PATCH 10/11] transport-pci: Use driver notification PCI capability Thread-Index: AQHZY1tLBn6tX00VoEql9uT0hRsw3K8nKIQAgAAAVNCAAAL9AIAAAFBggAAFNICAAAAt8A== Date: Wed, 12 Apr 2023 05:06:09 +0000 Message-ID: References: <20230330225834.506969-1-parav@nvidia.com> <20230330225834.506969-11-parav@nvidia.com> <20230412003006-mutt-send-email-mst@kernel.org> <20230412004152-mutt-send-email-mst@kernel.org> <20230412010224-mutt-send-email-mst@kernel.org> In-Reply-To: <20230412010224-mutt-send-email-mst@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: PH0PR12MB5481:EE_|DM8PR12MB5398:EE_ x-ms-office365-filtering-correlation-id: 6276c3df-a002-4947-dfa0-08db3b13a0c5 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:PH0PR12MB5481.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(346002)(366004)(39860400002)(376002)(396003)(136003)(451199021)(6916009)(4326008)(64756008)(66446008)(66476007)(66556008)(76116006)(66946007)(8676002)(15650500001)(4744005)(2906002)(41300700001)(52536014)(8936002)(316002)(5660300002)(478600001)(54906003)(83380400001)(71200400001)(7696005)(9686003)(55016003)(6506007)(33656002)(186003)(38100700002)(38070700005)(86362001)(122000001);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?Bgq6L5OkOnlV9bHEsFOktmMm+fkWTgoNpjoHwZpq45TliVf5UcjfqudPPOKC?= =?us-ascii?Q?gy9RlNV8R6rgUlmo3U/IVLDKSCd1bMROwmJkwdfTOmcH3USee1FyGRnjm/eP?= =?us-ascii?Q?kjUdk1GMQ+cAPl7IlhYdJURsF+vVgUVWJKn9fj9qRlOZ8d2AUHWaG+EhMjf5?= =?us-ascii?Q?dN0OlsCkO1NoiTNvrDayWYYyUCrDtOnKq9ztBoN0t9BxleYYZdLVpKVzUq6Q?= =?us-ascii?Q?IEkV2YM8qRkPDXmpZd6EUUHuSz//iYzgRPoNIkM3ieg/3WF+3j56ZwnBdDfU?= =?us-ascii?Q?EEyZCeMa1eQPlk2Nkpe+c6PVE10STnRE+/1FSyiD8qclbiKKqr0jrZEjy/8P?= =?us-ascii?Q?IyZ831YJIDvRX4JM8xeZ+/LIOwBqn44zrh7uCRVZjum34+ap43n1Gb4mmVNp?= =?us-ascii?Q?R++MMiSVHGP5ligcc++aUZuzc2A5s3dY0gyqRMaktmXLLeKIKE7OFBYM+UHY?= =?us-ascii?Q?htaXFUr/zqlQ13+gdlphXLuYIZNKCpUoLWfMD1AaQxox3dJ/QGfhGAlNkLP+?= =?us-ascii?Q?MeaXVUXGtoy05BHXEgWK2R6oVT9q81Zjnvr6VwFAe1iqC3jxGftIZJFRLZEh?= =?us-ascii?Q?URvet/dmyKUWq2mAZDCbp23YM1/b2A9aKDoqab/MAlXigkccYc9xJqXmmu9o?= =?us-ascii?Q?/Clv8hMcASgimgh74J7XfEt2Rn8cDKMjk4GJ4Zek+JCHgwUht95l4APrMeTh?= =?us-ascii?Q?+TSVo2mn4QBguHEnSaMEUx8qhh5fT1ymOb9WmA3176VZXt5eQ3fX1z8d9bz9?= =?us-ascii?Q?QnRMl1lAdEJyRE//EaZLmZUDRt0/ktyYGxTCZMgdR7ZEbdllRcN5mpND3oZ4?= =?us-ascii?Q?fEGvp+a04CQwmIBhe3e9GrUc33dsXLk0I+DYd9sawv0T+03WRHWpFwf583m4?= =?us-ascii?Q?4QmjPpcSWBFPm24QSrJB1qU+op9rPSgVZpG0F+JxkfMhyqtZHBS/LXcsphrq?= =?us-ascii?Q?KiZpIuqi+6N5jLj74JOqpMuZB7YIGrd8lOKsTBndexdHkph/Llx92cACASYi?= =?us-ascii?Q?Q+yVI5XuF/gFhXXuKaX8Ue8LIU6poWLuavqIhkbwUJiXJ/taBuyaBVmbJL7T?= =?us-ascii?Q?jqUGOvhke/HFvAJUBA5HO/fVGj4UTakFBrRjkTyBkXpZfbn4x8uLkmN150gP?= =?us-ascii?Q?y0nsDlC0AJD41pcHsx5hbyXTrdBMzIjertnNfM+O9TTcfeGFc6eJqaQqWTLX?= =?us-ascii?Q?wKvh2Tgl/O9trYb6+yvHZ6OLqLWuBqbnHSLjqw4Zva2VWybb3lljN3fYSt8v?= =?us-ascii?Q?hiXC86jDTK13Zs4dqec1SBp1BJ7apBTonrcBtYm0AGTc9BvUercbMPr0vCOb?= =?us-ascii?Q?tlAXQRAWFekvmTmzn7LkwNffw7YDv524HVJnGGQI6yGyb0W6LbD8r2ynFm2v?= =?us-ascii?Q?hNsea7+AJL7zY9mKUOtx/qisTkWo7w32E3ryMflCtQL4FAdKM0gRARMPPbo8?= =?us-ascii?Q?FTpGx3liOWMeyVjxdg6Qg2Zih8pTUI1jnD/WdhguVLqwVt/1Of2LPaS0ZwBz?= =?us-ascii?Q?ywx57ZhWnqVShZjF+o+V1ZzyKiaPhEr+tKuBS6T5BSfvCrxNH8ngWazg9OYX?= =?us-ascii?Q?x8bs3w2wzaTekAgyjZfxMD6sU7fHuejer9dXtDRbQYJvuYu3TJ4KL5wXaLN9?= =?us-ascii?Q?l/B1KHN2u5ZKhWk71ZI7BdE=3D?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PH0PR12MB5481.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6276c3df-a002-4947-dfa0-08db3b13a0c5 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2023 05:06:09.0499 (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: PJTcJjIGuolSuaFabr+aMrET7d5F2qZrFupGtb5PazE95Nb6EDMk1xdjUvHRho1l8J3nLugovcFF16YPwUjBQw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM8PR12MB5398 Subject: [virtio-dev] RE: [virtio-comment] Re: [PATCH 10/11] transport-pci: Use driver notification PCI capability > From: virtio-comment@lists.oasis-open.org open.org> On Behalf Of Michael S. Tsirkin > > On that occurrence, hypervisor driver forwards the q notification using= the q > notification region which is defined by struct virtio_pci_notify_cap. >=20 > What is wrong with forwarding it on the legacy window? Legacy window is configuration registers. One has sandwitched q notification register in middle of all the config reg= isters. Such registers do not start the VQ data path engines. 1.x spec has done the right thing to have dedicated notification region whi= ch something an actual pci hw can implement. --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org