linux-kernel - Re: [PATCH 1/3] x86/mpx: tweak header name

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Message-ID: <398c06e7-2d3e-1930-f1ec-58e36ccf9898@intel.com>
Date:   Fri, 8 Feb 2019 13:50:46 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>,
        Borislav Petkov <bp@...en8.de>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH 1/3] x86/mpx: tweak header name

On 2/8/19 1:43 PM, Michael S. Tsirkin wrote:
> On Fri, Feb 08, 2019 at 04:42:39PM +0100, Borislav Petkov wrote:
>> On Fri, Feb 08, 2019 at 01:02:53AM -0500, Michael S. Tsirkin wrote:
>>> Use linux/mman.h to make sure we get all mmap flags we need.
>> Why, asm/mman.h is not enough or is this fixing a build issue or what is that
>> patch supposed to address?
> Coding style violation: if a linux/foo.h exists then it must
> be included in preference to asm/foo.h

Huh, I don't see that one in Documentation/process/coding-style.rst

> And the specific issue is that a follow-up patch moves code from
> asm/mman.h to linux/mman.h so if any one was indirectly using
> this header it will now miss the symbols that are being moved.

Fair enough.  But, if this is the real reason, it belongs in the changelog.