On 5/6/20 9:08 AM, Björn Töpel 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: 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>
Applied, thanks everyone!
