The latest Linux kernel cryptographic subsystem performance work carried out by Google engineer Eric Biggers is migrating x86/x86_64 and RISC-V optimized implementations of different AES modes into the lib/crypto kernel crypto library to enjoy faster performance there.
Merged for the Linux 7.4 kernel, Biggers migrated the x86/x86_64 and RISC-V optimized implementations of AES modes ECB, CBC, CBC-CTS, CTR, XCTR, XTS into the kernel crypto library space. In turn the library APIs are now properly accelerated on those architectures while also still accelerating crypto_skcipher usage too. On Intel/AMD x86_64 CPUs this means making use of AVX optimized code as well as AES-NI instructions.
The Linux kernel crypto expert explained that…
