Re: [PATCH v3 bpf-next 04/18] libbpf: mark BPF subprogs with hidden visibility as static for BPF verifier
From: Yonghong Song <hidden>
Date: 2021-04-23 18:24:09
Also in:
bpf
On 4/23/21 11:13 AM, Andrii Nakryiko wrote:
Define __hidden helper macro in bpf_helpers.h, which is a short-hand for
__attribute__((visibility("hidden"))). Add libbpf support to mark BPF
subprograms marked with __hidden as static in BTF information to enforce BPF
verifier's static function validation algorithm, which takes more information
(caller's context) into account during a subprogram validation.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>Acked-by: Yonghong Song <redacted>