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Date:   Wed, 21 Feb 2018 17:08:15 +0100
From:   Jonathan =?utf-8?Q?Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>
To:     kbuild test robot <lkp@intel.com>
Cc:     Jonathan =?utf-8?Q?Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>,
        kbuild-all@01.org, linuxppc-dev@lists.ozlabs.org,
        linux-kernel@vger.kernel.org,
        Michael Ellerman <mpe@ellerman.id.au>, linux-mm@kvack.org,
        Joel Stanley <joel@jms.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Philippe Ombredanne <pombredanne@nexb.com>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Nathan Fontenot <nfont@linux.vnet.ibm.com>,
        Michael Bringmann <mwb@linux.vnet.ibm.com>,
        Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>,
        Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH 5/6] powerpc: Implement DISCONTIGMEM and allow selection
 on PPC32
Message-ID: <20180221160815.dxhpsejt74zeqqjd@latitude>
References: <20180220161424.5421-6-j.neuschaefer@gmx.net>
 <201802210756.OZokd64C%fengguang.wu@intel.com>
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On Wed, Feb 21, 2018 at 07:46:28AM +0800, kbuild test robot wrote:
[...]
> >> include/linux/mmzone.h:1239:19: error: conflicting types for 'pfn_valid'
>     static inline int pfn_valid(unsigned long pfn)
>                       ^~~~~~~~~
>    In file included from include/linux/mmzone.h:912:0,
>                     from include/linux/gfp.h:6,
>                     from include/linux/mm.h:10,
>                     from include/linux/mman.h:5,
>                     from arch/powerpc/kernel/asm-offsets.c:22:
>    arch/powerpc/include/asm/mmzone.h:40:19: note: previous definition of 'pfn_valid' was here
>     static inline int pfn_valid(int pfn)
>                       ^~~~~~~~~
>    make[2]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
>    make[2]: Target '__build' not remade because of errors.
>    make[1]: *** [prepare0] Error 2
>    make[1]: Target 'prepare' not remade because of errors.
>    make: *** [sub-make] Error 2

Oops, I'll fix this in the next version (and compile-test on ppc64...).

Weirdly enough, x86-32 and parisc define pfn_valid with an int
parameter, too (both of them since the Beginning Of Time, aka.
v2.6.12-rc2).

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