Re: [PATCH v2 bpf 1/5] libbpf: feature-detect arg:ctx tag support in kernel

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On Thu, 2024-01-18 at 16:43 -0800, Andrii Nakryiko wrote:
> On Thu, Jan 18, 2024 at 11:50 AM Eduard Zingerman <eddyz87@xxxxxxxxx> wrote:
[...]
> > Question:
> >   suppose this is an old kernel and decl tags are not supported,
> >   should negative result be cached as 0 in such case?
> 
> yep, it should, and it will be eventually when
> probe_kern_arg_ctx_tag() will be plugged back into kernel_supports()
> framework. For now this small inefficiency seems fine, given it's
> temporary.

Understood, thank you.





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