On 22.12.2016 20:56, Andy Lutomirski wrote: > It's also not quite clear to me why userspace needs to be able to > calculate the digest on its own. A bpf(BPF_CALC_PROGRAM_DIGEST) > command that takes a BPF program as input and hashes it would seem to > serve the same purpose, and that would allow the kernel to key the > digest and change the algorithm down the road without breaking things.
I think that people expect digests of BPF programs to be stable over time and reboots.
