Re: [PATCH bpf 0/2] bpf, arm: Small JIT optimizations

[Daniel Borkmann]

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.nels@xxxxxxxxx/
> [2] https://lore.kernel.org/bpf/20200409221752.28448-1-luke.r.nels@xxxxxxxxx/
>
> 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!