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by yjftsjthsd-h 833 days ago
> the kernel API is very slow to change and can’t meet everyone’s needs

Better yet - eBPF provides a stable ABI:) It makes things that were formerly kernel-internal possible to work with from a stable ~userspace interface.
2 comments
dilyevsky 833 days ago
bpf tooling generally provides no stability guarantees when you interact with kernel primitives. See [0], for example. Tho things have improved somewhat with CO-RE

[0] - https://lore.kernel.org/lkml/93a20759600c05b6d9e4359a1517c88...

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stefan_ 832 days ago
I'm curious what this guarantee includes - the bytecode? Because the actual in-kernel eBPF API is famously unstable, with eBPF-based applications usually requiring a cutting-edge kernel version (for industry anyway). And of course the eBPF programs themselves rely on accessing structures for which no stability guarantees are made whatsoever.
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