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Mon, 22 Jun 2020 00:32:17 +0200 Date: Mon, 22 Jun 2020 00:32:15 +0200 From: Federico Vaga To: Richard Weinberger CC: Vinod Koul , Dave Jiang , "Dan Williams" , , LKML Subject: Re: DMA Engine: Transfer From Userspace Message-ID: <20200621223215.xsbjqlhg6m2gz5im@cwe-513-vol689.cern.ch> References: <5614531.lOV4Wx5bFT@harkonnen> <20200621072457.GA2324254@vkoul-mobl> <20200621203634.y3tejmh6j4knf5iz@cwe-513-vol689.cern.ch> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Content-Disposition: inline In-Reply-To: X-Originating-IP: [2001:1458:d00:7::100:1c8] X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:188.184.36.46;CTRY:CH;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:cernmxgwlb4.cern.ch;PTR:cernmx13.cern.ch;CAT:NONE;SFTY:;SFS:(396003)(136003)(376002)(39860400002)(346002)(46966005)(5660300002)(4744005)(1076003)(8676002)(2906002)(70586007)(54906003)(70206006)(316002)(55016002)(86362001)(83380400001)(4326008)(7696005)(44832011)(186003)(426003)(82740400003)(16526019)(6916009)(47076004)(26005)(356005)(478600001)(336012)(7636003)(82310400002)(8936002);DIR:OUT;SFP:1101; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: be5c7f13-5af0-45dd-d8c3-08d81632f68d X-MS-TrafficTypeDiagnostic: VI1PR06MB3967: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5797; X-Forefront-PRVS: 04410E544A X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: CU0oXPxcWcpLQjepkwYDkdbTSasUCYA9WMGLg8kK/jgpnNNljY6P3rbdI8DqUfHiVHk2ozJZTWUKQ4AnFHAbsjxrG3v8LZdrzW+sSYN7r42xCvna9y//rlkDVKqMUl2+rCqL2bEFaU8cwntOZQFQfozgQ/kp+IMFsMpG5R6IxauAuP/svoEj9AbN+lPNadtjeBN85TD5C+acR1SeFJGMOYuIcP3i/xfQTNak2oS53Zt2GnslqoaKJiMOxLlFlUpdB72tn6HTi1TCkFykzN+jaFV/Zwu+GfcO0tBNj1fCF9ZcgDQLfF2cSbr11wBir52cmHv/2yj2TY3KJSd9ROgE+LkJ+uMPH+rvvOAZcE+egdsTwb5/9n0zI37vcsAIrAVyF3W4+v5wisbTb9Ss/Vsz6Q== X-OriginatorOrg: cern.ch X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jun 2020 22:32:21.1143 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: be5c7f13-5af0-45dd-d8c3-08d81632f68d X-MS-Exchange-CrossTenant-Id: c80d3499-4a40-4a8c-986e-abce017d6b19 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=c80d3499-4a40-4a8c-986e-abce017d6b19;Ip=[188.184.36.46];Helo=[cernmxgwlb4.cern.ch] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR06MB3967 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jun 21, 2020 at 10:45:04PM +0200, Richard Weinberger wrote: >On Sun, Jun 21, 2020 at 10:37 PM Federico Vaga wrote: >> >Federico, what use case do you have in mind? >> >> Userspace drivers > >Is using vfio an option? I do not know the subsystem. Could be, thanks for the suggestion I will have a look. >-- >Thanks, >//richard