This patchset adds a VAES and AVX512 / AVX10 implementation of AES-GCM (Galois/Counter Mode), which improves AES-GCM performance by up to 162%. In addition, it replaces the old AES-NI GCM code from Intel with new code that is slightly faster and fixes a number of issues including the massive binary size of over 250 KB. See the patches for details. The end state of the x86_64 AES-GCM assembly code is that we end up with two assembly files, one that generates AES-NI code with or without AVX, and one that generates VAES code with AVX512 / AVX10 with 256-bit or 512-bit vectors. There's no support for VAES alone (without AVX512 / AVX10). This differs slightly from what I did with AES-XTS where one file generates both AVX and AVX512 / AVX10 code including code using VAES alone (without AVX512 / AVX10), and another file generates non-AVX code only. For now this seems like the right choice for each particular algorithm, though, based on how much being limited to 16 SIMD registers and 128-bit vectors resulted in some significantly different design choices for AES-GCM, but not quite as much for AES-XTS. CPUs shipping with VAES alone also seems to be a temporary thing, so we perhaps shouldn't go too much out of our way to support that combination. Changed in v5: - Fixed sparse warnings in gcm_setkey() - Fixed some comments in aes-gcm-aesni-x86_64.S Changed in v4: - Added AES-NI rewrite patch. - Adjusted the VAES-AVX10 patch slightly to make it possible to cleanly add the AES-NI support on top of it. Changed in v3: - Optimized the finalization code slightly. - Fixed a minor issue in my userspace benchmark program (guard page after key struct made "AVX512_Cloudflare" extra slow on some input lengths) and regenerated tables 3-4. Also upgraded to Emerald Rapids. - Eliminated an instruction from _aes_gcm_precompute. Changed in v2: - Additional assembly optimizations - Improved some comments - Aligned key struct to 64 bytes - Added comparison with Cloudflare's implementation of AES-GCM - Other cleanups Eric Biggers (2): crypto: x86/aes-gcm - add VAES and AVX512 / AVX10 optimized AES-GCM crypto: x86/aes-gcm - rewrite the AES-NI optimized AES-GCM arch/x86/crypto/Kconfig | 1 + arch/x86/crypto/Makefile | 8 +- arch/x86/crypto/aes-gcm-aesni-x86_64.S | 1128 +++++++++ arch/x86/crypto/aes-gcm-avx10-x86_64.S | 1222 ++++++++++ arch/x86/crypto/aesni-intel_asm.S | 1503 +----------- arch/x86/crypto/aesni-intel_avx-x86_64.S | 2804 ---------------------- arch/x86/crypto/aesni-intel_glue.c | 1269 ++++++---- 7 files changed, 3125 insertions(+), 4810 deletions(-) create mode 100644 arch/x86/crypto/aes-gcm-aesni-x86_64.S create mode 100644 arch/x86/crypto/aes-gcm-avx10-x86_64.S delete mode 100644 arch/x86/crypto/aesni-intel_avx-x86_64.S base-commit: aabbf2135f9a9526991f17cb0c78cf1ec878f1c2 -- 2.45.1
