Changes and New Features
SR-IOV - Virtual Functions (VF) per Port - The maximum Virtual Functions (VF) per port is 127. For further information, see Known Issues.
It is recommended to enable the "above 4G decoding" BIOS setting for features that require a large amount of PCIe resources (e.g., SR-IOV with numerous VFs, PCIe Emulated Switch, Large BAR Requests).
Security Hardening Enhancements: This release contains important reliability improvements and security hardening enhancements. NVIDIA recommends upgrading your devices' firmware to this release to improve the devices’ firmware security and reliability.
| Feature/Change | Description | 
| 22.42.1000 | |
| Memory Slow Release | Added a new command interface "Memory slow release" to enable/disable holding memory pages for a defined period of time. Once the timer expires, the firmware will return the pages to the driver. | 
| Kernel Lockdown | Added support for MVTS register via a miscellaneous driver using the access_register PRM command. | 
| Steering SF Traffic to a Specific PF MSI-X | MSI-X on SF can be received now through the PF's MSI-X vector. | 
| Bug Fixes | See Bug Fixes in this Firmware Version section. | 
Unsupported Features
The following advanced feature are unsupported in the current firmware version:
- The following service types: - SyncUMR 
- Mellanox transport 
- RAW IPv6 
 
- INT-A not supported for EQs only MSI-X 
- PCI VPD write flow (RO flow supported) 
- Streaming Receive Queue (STRQ) and collapsed CQ 
- Subnet Manager (SM) on VFs 
- RoCE LAG in Multi-Host/Socket-Direct 
Unsupported Commands
- QUERY_MAD_DEMUX 
- SET_MAD_DEMUX 
- CREATE_RQ - MEMORY_RQ_RMP 
- MODIFY_LAG_ASYNC_EVENT