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Subject: Re: [PATCH] x86: pat: Do not compile stubbed functions when X86_PAT
 is off
To:     Thomas Gleixner <tglx@linutronix.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>
Cc:     x86 <x86@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
References: <198c94a8-12ea-88e7-6f08-b3456473e5c3@siemens.com>
 <87r1z6xxh5.fsf@nanos.tec.linutronix.de>
From:   Jan Kiszka <jan.kiszka@siemens.com>
Message-ID: <a2788ff7-c524-52de-3f45-82613410f872@siemens.com>
Date:   Fri, 7 Feb 2020 16:02:08 +0100
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On 07.02.20 15:50, Thomas Gleixner wrote:
> Jan Kiszka <jan.kiszka@siemens.com> writes:
> 
>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>
>> Those are already provided by linux/io.h as stubs.
>>
>> The conflict remains invisible until someone would pull {linux,asm}/io.h
>> into memtype.c.
> 
> Err. memtype.c includes asm/io.h already. So it's just the PAT=n case
> which is broken.

Ah, right, my comment must read "until someone would pull linux/io.h"
because only that header carries the stubs.

Jan

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