On Fri, 9 Feb 2024 at 05:06, Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> From: Alexei Starovoitov <ast@xxxxxxxxxx>
>
> In global bpf functions recognize btf_decl_tag("arg:arena") as PTR_TO_ARENA.
>
> Note, when the verifier sees:
>
> __weak void foo(struct bar *p)
>
> it recognizes 'p' as PTR_TO_MEM and 'struct bar' has to be a struct with scalars.
> Hence the only way to use arena pointers in global functions is to tag them with "arg:arena".
>
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
> ---
Acked-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
