Re: [PATCH bpf 0/2] bpf, arm: Small JIT optimizations
On 5/1/20 4:02 AM, Luke Nelson wrote: As Daniel suggested to us, we ran our formal verification tool, Serval, over the arm JIT. The bugs we found have been patched and applied to the bpf tree [1, 2]. This patch series introduces two small optimizations that simplify the JIT and use fewer instructions. [1] https://lore.kernel.org/bpf/20200408181229.10909-1-luke.r.n...@gmail.com/ [2] https://lore.kernel.org/bpf/20200409221752.28448-1-luke.r.n...@gmail.com/ Luke Nelson (2): bpf, arm: Optimize emit_a32_arsh_r64 using conditional instruction bpf, arm: Optimize ALU ARSH K using asr immediate instruction arch/arm/net/bpf_jit_32.c | 14 +- arch/arm/net/bpf_jit_32.h | 2 ++ 2 files changed, 11 insertions(+), 5 deletions(-) Applied, thanks!
[PATCH bpf 0/2] bpf, arm: Small JIT optimizations
As Daniel suggested to us, we ran our formal verification tool, Serval, over the arm JIT. The bugs we found have been patched and applied to the bpf tree [1, 2]. This patch series introduces two small optimizations that simplify the JIT and use fewer instructions. [1] https://lore.kernel.org/bpf/20200408181229.10909-1-luke.r.n...@gmail.com/ [2] https://lore.kernel.org/bpf/20200409221752.28448-1-luke.r.n...@gmail.com/ Luke Nelson (2): bpf, arm: Optimize emit_a32_arsh_r64 using conditional instruction bpf, arm: Optimize ALU ARSH K using asr immediate instruction arch/arm/net/bpf_jit_32.c | 14 +- arch/arm/net/bpf_jit_32.h | 2 ++ 2 files changed, 11 insertions(+), 5 deletions(-) -- 2.17.1
