On Wed, 6 May 2020 at 02:03, Luke Nelson <lukenels@xxxxxxxxxxxxxxxxx> wrote: > > 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 and Xi, Thanks a lot for working on this! Very nice series! For the series: Reviewed-by: Björn Töpel <bjorn.topel@xxxxxxxxx> Acked-by: Björn Töpel <bjorn.topel@xxxxxxxxx> > 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@xxxxxxxxx> > > -- > 2.17.1 >
