Re: [RFC bpf-next 3/9] selftests/bpf: add selftests for new insn_set map

[Eduard Zingerman <eddyz87@gmail.com>]

On Sun, 2025-06-15 at 08:59 +0000, Anton Protopopov wrote:
> Tests are split in two parts.
> 
> The `bpf_insn_set_ops` test checks that the map is managed properly:
> 
>   * Incorrect instruction indexes are rejected
>   * Non-sorted and non-unique indexes are rejected
>   * Unfrozen maps are not accepted
>   * Two programs can't use the same map
>   * BPF progs can't operate the map
> 
> The `bpf_insn_set_reloc` part validates, as best as it can do it from user
> space, that instructions are relocated properly:
> 
>   * no relocations => map is the same
>   * expected relocations when instructions are added
>   * expected relocations when instructions are deleted
>   * expected relocations when multiple functions are present
> 
> Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
> ---

Nit: term "relocation" is ambiguous, in BPF context first thing that
     comes to mind are ELF relocations that allow CO-RE to work.

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