Re: [PATCH] compiler.h: Avoid the usage of __typeof_unqual__() when __GENKSYMS__ is defined

From: Masahiro Yamada
Date: Fri Apr 04 2025 - 10:06:57 EST


On Fri, Apr 4, 2025 at 10:11 PM Uros Bizjak <ubizjak@xxxxxxxxx> wrote:
>
> On Fri, Apr 4, 2025 at 2:56 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote:
> >
> > On Fri, Apr 4, 2025 at 7:25 PM Uros Bizjak <ubizjak@xxxxxxxxx> wrote:
> > >
> > > Current version of genksyms doesn't know anything about __typeof_unqual__()
> > > operator. Avoid the usage of __typeof_unqual__() with genksyms to prevent
> > > errors when symbols are versioned.
> > >
> > > There were no problems with gendwarfksyms.
> > >
> > > Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>
> > > Fixes: ac053946f5c40 ("compiler.h: introduce TYPEOF_UNQUAL() macro")
> > > Reported-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
> > > Closes: https://lore.kernel.org/lkml/81a25a60-de78-43fb-b56a-131151e1c035@xxxxxxxxxxxxx/
> > > Cc: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
> > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> > > ---
> >
> >
> > Why don't you add it to the genksyms keyword table?
>
> It doesn't work, even if I patch it with an even more elaborate patch
> (attached).
>
> I guess some more surgery will be needed, but for now a fallback works
> as expected.
>
> Uros.

The attached patch looks good to me.



--
Best Regards
Masahiro Yamada