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Date: Wed, 14 Feb 2018 07:53:06 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Cc: stable@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>
Subject: Re: Linux 4.9.81
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 <1518547656@msgid.manchmal.in-ulm.de>
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On Tue, Feb 13, 2018 at 07:49:30PM +0100, Christoph Biedl wrote:
> Christoph Biedl wrote...
> 
> > This seems to help:
> (...)
> 
> Not enough, additionally CONFIG_LOCKUP_DETECTOR has to be set, else the linker will fail:
> 
>   LD      init/built-in.o
> arch/powerpc/platforms/built-in.o: In function `.pnv_setup_arch':
> setup.c:(.init.text+0x37ec): undefined reference to `.setup_rfi_flush'
> Makefile:976: recipe for target 'vmlinux' failed
> make[3]: *** [vmlinux] Error 1

Yes, I knew powerpc had build issues, due to patches the powerpc
developers had sent me to apply.  So I was hoping someone would build it
and say what I needed to do to fix it :)

thanks,

greg k-h