linux-kernel - Re: [PATCH v2 0/2 net] bitfield.h cleanups

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Message-ID: <CAKwvOdmXtFo8YoNd7pgBnTQEwTZw0nGx-LypDiFKRR_HzZm9aA@mail.gmail.com>
Date:   Tue, 14 Jul 2020 11:23:11 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>, oss-drivers@...ronome.com,
        Network Development <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>, Alex Elder <elder@...aro.org>
Subject: Re: [PATCH v2 0/2 net] bitfield.h cleanups

On Wed, Jul 8, 2020 at 4:04 PM Nick Desaulniers <ndesaulniers@...gle.com> wrote:
>
> Two patches, one that removes a BUILD_BUG_ON for a case that is not a
> compile time bug (exposed by compiler optimization).
>
> The second is a general cleanup in the area.
>
> I decided to leave the BUILD_BUG_ON case first, as I hope it will
> simplify being able to backport it to stable, and because I don't think
> there's any type promotion+conversion bugs there.
>
> Though it would be nice to use consistent types widths and signedness,
> equality against literal zero is not an issue.
>
> Jakub Kicinski (1):
>   bitfield.h: don't compile-time validate _val in FIELD_FIT
>
> Nick Desaulniers (1):
>   bitfield.h: split up __BF_FIELD_CHECK macro
>
>  .../netronome/nfp/nfpcore/nfp_nsp_eth.c       | 11 ++++----
>  include/linux/bitfield.h                      | 26 +++++++++++++------
>  2 files changed, 24 insertions(+), 13 deletions(-)
>
> --
> 2.27.0.383.g050319c2ae-goog
>

Hey David, when you have a chance, could you please consider picking
up this series?
-- 
Thanks,
~Nick Desaulniers