Message ID | 20200501020210.32294-1-luke.r.nels@gmail.com |
---|---|
Headers | show |
Series | bpf, arm: Small JIT optimizations | expand |
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@gmail.com/ > [2] https://lore.kernel.org/bpf/20200409221752.28448-1-luke.r.nels@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!