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Date:   Wed, 23 Sep 2020 11:49:09 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc:     Lorenz Bauer <lmb@...udflare.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        kernel-team <kernel-team@...udflare.com>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: explicitly size compatible_reg_types

On Wed, Sep 23, 2020 at 9:05 AM Andrii Nakryiko
<andrii.nakryiko@...il.com> wrote:
>
> On Wed, Sep 23, 2020 at 9:03 AM Lorenz Bauer <lmb@...udflare.com> wrote:
> >
> > Arrays with designated initializers have an implicit length of the highest
> > initialized value plus one. I used this to ensure that newly added entries
> > in enum bpf_reg_type get a NULL entry in compatible_reg_types.
> >
> > This is difficult to understand since it requires knowledge of the
> > peculiarities of designated initializers. Use __BPF_ARG_TYPE_MAX to size
> > the array instead.
> >
> > Signed-off-by: Lorenz Bauer <lmb@...udflare.com>
> > Suggested-by: Alexei Starovoitov <ast@...nel.org>
> > ---
>
> I like this more as well.
>
> Acked-by: Andrii Nakryiko <andriin@...com>

Applied. Thanks

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