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!
