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Date:   Mon, 11 Dec 2023 16:19:46 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Uros Bizjak <ubizjak@gmail.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: Re: linux-next: build warnings after merge of the tip tree
Message-ID: <20231211161946.2f151d13@canb.auug.org.au>
In-Reply-To: <CAFULd4Y4n4uGy-pTc0PD6+-OytzGZHeJTPZ_CPJDq7VM7ChRdA@mail.gmail.com>
References: <20231201112918.294b40b1@canb.auug.org.au>
        <CAFULd4Yfh0=TkhoevuJP1kghP5VLFj2zP9av68_s2pez3n2iog@mail.gmail.com>
        <20231204150807.600c2f09@canb.auug.org.au>
        <CAFULd4Y4n4uGy-pTc0PD6+-OytzGZHeJTPZ_CPJDq7VM7ChRdA@mail.gmail.com>
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Hi all,

On Mon, 4 Dec 2023 08:02:56 +0100 Uros Bizjak <ubizjak@gmail.com> wrote:
>
> On Mon, Dec 4, 2023 at 5:08=E2=80=AFAM Stephen Rothwell <sfr@canb.auug.or=
g.au> wrote:
> >
> > On Fri, 1 Dec 2023 13:09:45 +0100 Uros Bizjak <ubizjak@gmail.com> wrote=
: =20
> > >
> > > On Fri, Dec 1, 2023 at 1:29=E2=80=AFAM Stephen Rothwell <sfr@canb.auu=
g.org.au> wrote: =20
> > > > =20
> >  > After merging the tip tree, today's linux-next build (x86_64 allmodc=
onfig) =20
> > > > produced these warnings:
> > > >
> > > > WARNING: modpost: EXPORT symbol "const_pcpu_hot" [vmlinux] version =
generation failed, symbol will not be versioned.
> > > > Is "const_pcpu_hot" prototyped in <asm/asm-prototypes.h>?
> > > > WARNING: modpost: "const_pcpu_hot" [arch/x86/kernel/msr.ko] has no =
CRC!
> > > > WARNING: modpost: "const_pcpu_hot" [arch/x86/kvm/kvm.ko] has no CRC=
! =20
> > >
> > > My build doesn't produce any warnings. A defconfig + enabling kvm.ko =
as module:
> > >
> > > ...
> > >  AR      built-in.a
> > >  AR      vmlinux.a
> > >  LD      vmlinux.o
> > >  OBJCOPY modules.builtin.modinfo
> > >  GEN     modules.builtin
> > >  MODPOST Module.symvers
> > >  CC      .vmlinux.export.o
> > >  CC [M]  arch/x86/kvm/kvm.mod.o
> > >  CC [M]  fs/efivarfs/efivarfs.mod.o
> > > ...
> > >
> > > Does the attached patch help? Or is there anything else I should do to
> > > trigger the above problem? =20
> >
> > The patch does not help.  I am just doing an X86_64 allmodconfig build
> > with CONFIG_WERROR=3Dn. gcc is
> >
> > $ x86_64-linux-gnu-gcc --version
> > x86_64-linux-gnu-gcc (Debian 13.2.0-2) 13.2.0
> >
> > This is a cross build with a ppc64le host. =20
>=20
> The warning is triggered by CONFIG_MODVERSIONS=3Dy and will be fixed in
> a different way by the patch in [1].
>=20
> [1] https://lore.kernel.org/lkml/20231203232017.994963-1-ubizjak@gmail.co=
m/

I am still seeing the warnings ...

--=20
Cheers,
Stephen Rothwell

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