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Fri, 28 Jun 2024 14:29:48 -0700 Date: Fri, 28 Jun 2024 14:29:47 -0700 From: Nicolin Chen To: Pavel Machek CC: , , , , , , , , , , Subject: Re: [PATCH v9 0/6] Add Tegra241 (Grace) CMDQV Support (part 1/2) Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B076:EE_|SA1PR12MB7245:EE_ X-MS-Office365-Filtering-Correlation-Id: fb21e57a-48a9-44f7-64c2-08dc97b97a68 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|36860700013|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?C7Bh2XsDgynxbBlo6X2kBu9UfwCSMl9V2Wyl9VOeN7t7cOq+1g5DRLMfRUXG?= =?us-ascii?Q?zJ5Jm53yiPrGC5HXCdmPrBPiZZhEnAbqE2Bzosq7WvdS0L7hHUzNh/DGX/oY?= =?us-ascii?Q?tqE20K5of5NvBY64cX7u8522koug0/hTBb272KyiUYeyCgmvai27AVXhBmQS?= =?us-ascii?Q?0Kbda4M73tq6UckhIjfAMrZNvS5UmlaeChIw3OU7pvJ+mSu3tQuKC1cZuK5P?= =?us-ascii?Q?J7pMH7E4DnTTrw37wYwncMdID60cYOa80YBfVFCP3xdfT5HZ+Pxy2CKU9Wq7?= =?us-ascii?Q?GizEBstoZc/iJTZVMVdVSHQT5cwdQS+a0QLrwL/Bv3ByyC53KbhvjAIbFgt9?= =?us-ascii?Q?7Kzjqq3/SsLQX/t8TltbUE3QFs1ih0TtB+PHBhsBlHgNzlVufnR1qKSc6K17?= =?us-ascii?Q?6/urTQX7hNlz0QT2iaAb3UxKvdW2LkvyC4exHLxvwwr6Eocu78DIlSnb7O4F?= =?us-ascii?Q?PXRZHqicRMnBqSSQ4EuONeE0EoPuq88NOwzvrMpvQLRUJY9p2elbibjzFJDn?= =?us-ascii?Q?OLQItsuxt5BJl6Uzj4TL1al8dzerUP0dBl4tyGM4grzLDDr4wdNoKNbDOjPN?= =?us-ascii?Q?IrE4gVzoMhAjRw7ezR/zXaxZUE0VMqlxPRETQOhGJy+RacYE6HBYfl2d0VpL?= =?us-ascii?Q?8GbgWoKiPoAlbVvaiTXIbcScI2BKlEYC0QxEqV+pCvJ7QDXiWPM0jnn24ckC?= =?us-ascii?Q?lZtEoqvark3QpBpw+Dz8aqIYl2KD8ieSjz+jPnjXwCt6dVVgjXHHcSR+0cCP?= =?us-ascii?Q?JTgNCnQgxO3SpaC60dzxkctmHR96psDR17Sdf2zVe/2SWjVeu1VLj5dy1KV4?= =?us-ascii?Q?MQiLFoICgqf0CD/s/ylxDWPi68SuW92QeA6pRLGwufC+rxhYwhkglChMdlHc?= =?us-ascii?Q?DaYt11faGCS0KjFyZYk4SvcAbOsOWMG8pf/7ccCGWpQx8cEiYsndP+CL4WZR?= =?us-ascii?Q?uXh2+qFdAxc6iVbpQA6atCH6/ZSG29pXUjBf1UoHUCzTVxCm2TgjgvLOIfRJ?= =?us-ascii?Q?Dcirat+PZWGjIxsdG3pFPDV/W4j671DhuHTgpGfPvM1NWA03Fn5eMgc4FRtM?= =?us-ascii?Q?Ac6k4I+az1l4f9aWd0hxCg2xONEnVntexN9bk/IHOn1S6hkh1KvzXyZooUh3?= =?us-ascii?Q?axK1XURNnlaSzWzffcjR7064J3Snes+YwqvcbvkEsxFcqo7hx4gh6CQZ/xAr?= =?us-ascii?Q?zHuJwcL40swsiH+XY6xor386UMc+P1kyGrjKhfGmFgELu+X74AyEe3WcGAqk?= =?us-ascii?Q?TILzT3ZGZIIqSqBzLQOLghG97ANIIi76Hd3u64d0TW7ETwp+VbGm89fP0vCG?= =?us-ascii?Q?F5BtbUYc4Lh0AQg30Wk9ZNcgvDUlyDOpIbjt8EoAfampAQoNclihZiWqYZmx?= =?us-ascii?Q?emszyq61PnnJDPk171p9PD20Cs7rN2ZERh4kqS4ioPzpAVhSglK/FphtdxOn?= =?us-ascii?Q?jgU41ZF16u3LofTomAUi7Y8OPztr7nSF?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(1800799024)(36860700013)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jun 2024 21:30:05.6298 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fb21e57a-48a9-44f7-64c2-08dc97b97a68 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B076.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7245 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240628_144611_844451_A816798B X-CRM114-Status: GOOD ( 12.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jun 28, 2024 at 09:26:00PM +0200, Pavel Machek wrote: > Hi! > > > NVIDIA's Tegra241 (Grace) SoC has a CMDQ-Virtualization (CMDQV) hardware > > that extends standard ARM SMMUv3 to support multiple command queues with > > virtualization capabilities. Though this is similar to the ECMDQ in SMMU > > v3.3, CMDQV provides additional Virtual Interfaces (VINTFs) allowing VMs > > to have their own VINTFs and Virtual Command Queues (VCMDQs). The VCMDQs > > can only execute a limited set of commands, mainly invalidation commands > > when exclusively used by the VMs, compared to the standard SMMUv3 CMDQ. > > Text is block-aligned without duplicated spaces. How did you do > that...? By OCD? Nothing fancy :) Thanks Nicolin