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Date: Thu, 22 Nov 2018 19:04:59 +0800 (CST)
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Hi Ingo,

> * Yi Wang <wang.yi59@zte.com.cn> wrote:
>
> > We may get -Wmissing-prototypes warnings when building
> > kernel with W=3D1, it's better to fix them as global function
> > signature can be changed and caller who use the old unchanged
> > prototypes will be hosed.
> >
> > This patch fixes most of -Wmissing-prototypes warnings which
> > are in the root directory of arch/x86/kernel, not including
> > the subdirectories.
> >
> > These are the warnings fixed in this patch:
> > arch/x86/kernel/signal.c:865:17: warning: no previous prototype for =E2=
=80=98sys32_x32_rt_sigreturn=E2=80=99 [-Wmissing-prototypes]

......

> >  include/linux/ftrace.h             | 3 +++
> >  include/linux/kexec.h              | 1 +
> >  include/linux/of_fdt.h             | 1 +
> >  include/linux/ptrace.h             | 1 +
> >  24 files changed, 55 insertions(+), 3 deletions(-)
>
> Breaks 32-bit compilation:
>
> ../arch/x86/include/asm/setup.h: Assembler messages:
> ../arch/x86/include/asm/setup.h:30: Error: no such instruction: `unsigned=
 long __startup_64(unsigned long physaddr,struct boot_params *bp)'
>
> I'll skip the setup.h bits - let's hope that's the only bug.

Sorry for the inconvenience, though I have checked carefully :-)

How do you produce this error? I tested this way but did not reproduce
that error:
# make allmodconfig
# make -j8

Thanks for your time again!


---
Best wishes
Yi Wang

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