Linux 6.5 Crypto adds new AMD CCP hardware, StarFive RISC-V bits

[ad_1]

Herbert Xu submitted the crypto subsystem updates for the current Linux 6.5 merge window with new hardware support and some crypto API improvements.

The Linux kernel cryptographic subsystem continues to have extensive hardware support. Most notable with this v6.5 pull request is the addition of support for some new AMD CCP hardware. Although the patches do not specify which AMD processors will have this new cryptographic co-processor, it is simply PCI devices 0x156E and 0x17E0 for CCP devices. As a result, there are only a few minor changes made to AMD CCP. Although given the developer involved, it’s possible that this new AMD CCP hardware is for recent or upcoming Ryzen client processors rather than server-side EPYC. In any case, Linux 6.5 supports some new AMD CCP hardware.

The AMD Crypto co-processor typically allows various cryptographic algorithms, random number generation (RNG), and Zlib compression/decompression to be offloaded to this companion IP block on AMD processors.

Linux 6.5 in the crypto driver world also enabled hashing and HMAC support for the StarFive RISC-V SoC driver. Support for the RSA algorithm is also implemented.

The crypto pull also has a new interface to allow the collection of raw entropy in jitter for debugging/profiling purposes. Other changes are mostly fixes and minor work on the crypto API and supported algorithms.

[ad_2]