Re: [PATCH bpf-next 0/4] RV64 BPF JIT Optimizations

[Daniel Borkmann]

On 5/6/20 9:08 AM, BjÃrn TÃpel wrote:
> 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: BjÃrn TÃpel <bjorn.topel@xxxxxxxxx>
> Acked-by: BjÃrn TÃpel <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>

Applied, thanks everyone!