Re: [PATCH bpf-next v5 5/9] bpf: selftests: Add verifier tests for CO-RE bitfield writes

From: Daniel Xu
Date: Wed Dec 13 2023 - 19:20:59 EST


On Wed, Dec 13, 2023 at 03:58:39PM -0800, Martin KaFai Lau wrote:
> On 12/11/23 12:20 PM, Daniel Xu wrote:
> > Add some tests that exercise BPF_CORE_WRITE_BITFIELD() macro. Since some
> > non-trivial bit fiddling is going on, make sure various edge cases (such
> > as adjacent bitfields and bitfields at the edge of structs) are
> > exercised.
>
> Hi DanielXu, I have pushed the libbpf changes (adding
> BPF_CORE_WRITE_BITFIELD) and verifier test in patch 3-5 which is useful by
> itself. e.g. Another patchset can start using it also:
> https://lore.kernel.org/bpf/8fccb066-6d17-4fa8-ba67-287042046ea4@xxxxxxxxx/
>
> Thanks.

Sounds good. I'll rebase my patchset on top of bpf-next.

Thanks,
Daniel