Messages in this thread | | | From | Luke Nelson <> | Subject | [PATCH bpf-next 0/4] RV64 BPF JIT Optimizations | Date | Tue, 5 May 2020 17:03:16 -0700 |
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This patch series introduces a set of optimizations to the BPF JIT on RV64. The optimizations are related to the verifier zero-extension optimization and BPF_JMP BPF_K.
We tested the optimizations on a QEMU riscv64 virt machine, using lib/test_bpf and test_verifier, and formally verified their correctness using Serval.
Luke Nelson (4): bpf, riscv: Enable missing verifier_zext optimizations on RV64 bpf, riscv: Optimize FROM_LE using verifier_zext on RV64 bpf, riscv: Optimize BPF_JMP BPF_K when imm == 0 on RV64 bpf, riscv: Optimize BPF_JSET BPF_K using andi on RV64
arch/riscv/net/bpf_jit_comp64.c | 64 ++++++++++++++++++++++----------- 1 file changed, 44 insertions(+), 20 deletions(-)
Cc: Xi Wang <xi.wang@gmail.com>
-- 2.17.1
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