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From: Andy Lutomirski <luto@amacapital.net>
Date: Wed, 8 Mar 2017 08:08:37 -0800
Message-ID: <CALCETrUOUXeB4B01t4AJNHCRBUGFGvfM9TPjH97ROQfnNuTFpQ@mail.gmail.com>
Subject: Re: [v6 PATCH 15/21] x86/mm: Relocate page fault error codes to traps.h
To: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        "H. Peter Anvin" <hpa@zytor.com>, Andy Lutomirski <luto@kernel.org>,
        Borislav Petkov <bp@suse.de>, Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Brian Gerst <brgerst@gmail.com>, Chris Metcalf <cmetcalf@mellanox.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Paolo Bonzini <pbonzini@redhat.com>, Liang Z Li <liang.z.li@intel.com>,
        Masami Hiramatsu <mhiramat@kernel.org>, Huang Rui <ray.huang@amd.com>,
        Jiri Slaby <jslaby@suse.cz>, Jonathan Corbet <corbet@lwn.net>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Paul Gortmaker <paul.gortmaker@windriver.com>,
        Vlastimil Babka <vbabka@suse.cz>, Chen Yucong <slaoub@gmail.com>,
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        Fenghua Yu <fenghua.yu@intel.com>,
        "Ravi V. Shankar" <ravi.v.shankar@intel.com>,
        Shuah Khan <shuah@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        X86 ML <x86@kernel.org>, linux-msdos@vger.kernel.org,
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        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>
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On Tue, Mar 7, 2017 at 4:32 PM, Ricardo Neri
<ricardo.neri-calderon@linux.intel.com> wrote:
> Up to this point, only fault.c used the definitions of the page fault error
> codes. Thus, it made sense to keep them within such file. Other portions of
> code might be interested in those definitions too. For instance, the User-
> Mode Instruction Prevention emulation code will use such definitions to
> emulate a page fault when it is unable to successfully copy the results
> of the emulated instructions to user space.
>
> While relocating the error code enumeration, the prefix X86_ is used to
> make it consistent with the rest of the definitions in traps.h. Of course,
> code using the enumeration had to be updated as well. No functional changes
> were performed.
>

Reviewed-by: Andy Lutomirski <luto@kernel.org>