Re: [PATCH bpf-next v1 12/14] resolve_btfids: Drop KF_ARENA_ARG flag support

[Ihor Solodrai <ihor.solodrai@linux.dev>]

On 2026-08-21 4:35 p.m., Kumar Kartikeya Dwivedi wrote:
> Arena argument suffixes now describe the address-space contract at any
> parameter position, while the kernel no longer publishes KF_ARENA_ARG1
> or KF_ARENA_ARG2. Keeping private copies in resolve_btfids would leave an
> obsolete second annotation mechanism and silently accept flags the
> kernel no longer understands.
> 
> Derive arena arguments exclusively from their suffixes and retain
> KF_ARENA_RET for functions returning arena pointers. Update the resolver
> selftest to distinguish return-only flags, unannotated pointer arguments,
> and suffix-annotated arguments.
> 
> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

Assuming Eduard's point re selftest is going to be addressed:

Acked-by: Ihor Solodrai <ihor.solodrai@linux.dev>

> ---
>   tools/bpf/resolve_btfids/main.c               | 22 ++-----------------
>   .../selftests/bpf/prog_tests/resolve_btfids.c | 22 ++++++-------------
>   2 files changed, 9 insertions(+), 35 deletions(-)
> 
> [...]