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CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge2.nvidia.com; CAT:NONE; SFS:(13230040)(7416014)(82310400026)(376014)(36860700013)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Mar 2025 05:27:56.0056 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bd433334-65c5-480c-0b9f-08dd66a6cde8 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.233]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD7D.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB6450 Received-SPF: permerror client-ip=2a01:111:f403:2009::609; envelope-from=nicolinc@nvidia.com; helo=NAM10-BN7-obe.outbound.protection.outlook.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.332, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: /fP63yPmgHPi On Tue, Mar 18, 2025 at 09:31:35PM -0300, Jason Gunthorpe wrote: > On Tue, Mar 18, 2025 at 07:31:36PM +0100, Eric Auger wrote: > > Nevertheless I don't think anything prevents the acceleration granted > > device from also working with virtio/vhost devices for instance unless > > you unplug the existing infra. > > If the accel mode is using something like vcmdq then it is not > possible to work since the invalidations won't even be trapped. Yea, I totally forgot that.. All the invalidation commands that belong to emulated devices would be issued to VCMDQ (HW), while those vSIDs wouldn't be supported by the HW for CFGI_CD/ATC_INV, which will trigger errors/timeouts. Thanks Nicolin