Customer Affecting Changes | NVIDIA BlueField BSP

Contents:

Changes in This Release

This section provides a list of changes that took place in the current version and break compatibility/interface or discontinue support for features or OS versions, etc.

Introduced in Version	Description	Customer Impact and Recommendation
4.15.0	CPPC CPU frequency monitoring is no longer supported. As a result, the `cppc_cpufreq` module will fail to bind ("No such device"), and standard tools (such as `lscpu` and the `cpufreq` sysfs tree) will not display CPU frequencies.	Do not load the `cppc_cpufreq` module. Instead, use the `bfcpu-freq` command to query the CPU core frequency.
4.15.0	The `mlxbf-ptm` driver is no longer supported.	PTM is a debug-only driver that allowed access to power and telemetry data. Use `mlxreg` to MVCR space instead.

Changes Planned for Future Releases

This section provides a list of changes that will take place in a future version of the product and will break compatibility/interface or discontinue support for features or OS versions, etc.

Planned for Version	Description
BSP 4.20 (July/2025)	NVIDIA® System Management (NSM) will be enabled by default on BlueField and ConnectX starting from July release (currently disabled). NSM is a protocol designed for telemetry and management interfaces, specifically introduced with NVIDIA Blackwell products. This proprietary protocol is constructed on the Management Component Transport Protocol (MCTP) and can enhance industry-standard protocols (e.g., PLDM) or operate as an independent management interface.

Planned for Version

Description

BSP 4.20 (July/2025)

NVIDIA® System Management (NSM) will be enabled by default on BlueField and ConnectX starting from July release (currently disabled). NSM is a protocol designed for telemetry and management interfaces, specifically introduced with NVIDIA Blackwell products.
This proprietary protocol is constructed on the Management Component Transport Protocol (MCTP) and can enhance industry-standard protocols (e.g., PLDM) or operate as an independent management interface.

Changes in Earlier Releases

The following is a list of changes that took place throughout the past two major releases that broke compatibility/interface or discontinued support for features or OS versions:

Introduced in Version	Description	Customer Impact and Recommendation
N/A	N/A	N/A

Discontinued Features

List of features which are supported in previous generations of hardware devices:

N/A for this release

Last updated: June 03, 2026