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SubjectRe: [PATCH v5 00/12] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h)
On Thu, May 12, 2022 at 5:04 AM Nathan Chancellor <nathan@kernel.org> wrote:
>
> Hi Masahiro,
>
> On Thu, May 12, 2022 at 01:45:02AM +0900, Masahiro Yamada wrote:
> >
> > This is the third batch of cleanups in this development cycle.
> >
> > Major changes in v5:
> > - Fix build errors
> > - More cleanups
> >
> > Major changes in v4:
> > - Move static EXPORT_SYMBOL check to a script
> > - Some refactoring
> >
> > Major changes in v3:
> >
> > - Generate symbol CRCs as C code, and remove CONFIG_MODULE_REL_CRCS.
> >
> > Major changes in v2:
> >
> > - V1 did not work with CONFIG_MODULE_REL_CRCS.
> > I fixed this for v2.
> >
> > - Reflect some review comments in v1
> >
> > - Refactor the code more
> >
> > - Avoid too long argument error
> >
> >
> >
> > Masahiro Yamada (12):
> > modpost: split the section mismatch checks into section-check.c
> > modpost: add sym_find_with_module() helper
> > modpost: extract symbol versions from *.cmd files
> > kbuild: link symbol CRCs at final link, removing
> > CONFIG_MODULE_REL_CRCS
> > kbuild: stop merging *.symversions
> > genksyms: adjust the output format to modpost
> > kbuild: do not create *.prelink.o for Clang LTO or IBT
> > kbuild: check static EXPORT_SYMBOL* by script instead of modpost
> > kbuild: make built-in.a rule robust against too long argument error
> > kbuild: make *.mod rule robust against too long argument error
> > kbuild: add cmd_and_savecmd macro
> > kbuild: rebuild multi-object modules when objtool is updated
>
> I applied this series to your latest kbuild branch, built an Arch
> Linux x86_64 config and Fedora aarch64 config with
> CONFIG_LTO_CLANG_FULL=y then CONFIG_LTO_CLANG_THIN=y, and boot tested
> each kernel in QEMU with a full userspace. I did not notice any new
> warnings/errors and everything appears to work fine.
>
> Tested-by: Nathan Chancellor <nathan@kernel.org>
>
> Cheers,
> Nathan


Thanks for your testing.

I ended up with v6 due to a build issue
of CONFIG_TRIM_UNUSED_KSYMS,
but this patch set is getting in good shape.

Thanks.


--
Best Regards
Masahiro Yamada

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