Re: linux-next: build warnings after merge of the tip tree

Stephen Rothwell
2023-12-04T04:09:28Z

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Hi Uros,

On Fri, 1 Dec 2023 13:09:45 +0100 Uros Bizjak <ubizjak@gmail.com> wrote:
>
> On Fri, Dec 1, 2023 at 1:29 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> >
> After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> > 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!
>
> 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?

The patch does not help. I am just doing an X86_64 allmodconfig build
with CONFIG_WERROR=n. 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.

--
Cheers,
Stephen Rothwell

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