linux-kernel - Re: [PATCH] modpost: Skip .llvm.call-graph-profile section check

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Message-ID: <CADDJ8CXD05H22G=NsUcZy-uG5+4xQRpCd-UPVL1Z1a0Lybx9+Q@mail.gmail.com>
Date:   Tue, 22 Aug 2023 10:21:37 -0700
From:   Denis Nikitin <denik@...omium.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>, Tom Rix <trix@...hat.com>,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Fangrui Song <maskray@...gle.com>
Subject: Re: [PATCH] modpost: Skip .llvm.call-graph-profile section check

On Tue, Aug 22, 2023 at 8:47 AM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> On Mon, Aug 21, 2023 at 11:54 PM Denis Nikitin <denik@...omium.org> wrote:
> >
> > .llvm.call-graph-profile section is added when the kernel is built with
> > profiles (e.g. -fprofile-sample-use=<llvm.profile>). The section holds
> > metadata for symbols beloning to other sections and hence doesn't need
> > modpost checks.
> >
> > This change fixes the kernel build with sample profiles which fails
> > with:
> > "FATAL: modpost: Please add code to calculate addend for this architecture"
> >
> > Signed-off-by: Denis Nikitin <denik@...omium.org>
>
> Thanks for the patch. If you send a v2 with Fangrui's suggested
> changes+additions, feel free to carry forward my reviewed by tag.
>
> Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
>

Thanks! Will do shortly.

- Denis