linux-kernel - Re: [PATCH v3 1/3] arch/x86: Rename config X86_INTEL_MEMORY_PROTECTION

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Date:   Tue, 12 May 2020 10:45:14 -0500
From:   Babu Moger <babu.moger@....com>
To:     Dave Hansen <dave.hansen@...el.com>, corbet@....net,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        pbonzini@...hat.com, sean.j.christopherson@...el.com
Cc:     x86@...nel.org, vkuznets@...hat.com, wanpengli@...cent.com,
        jmattson@...gle.com, joro@...tes.org, dave.hansen@...ux.intel.com,
        luto@...nel.org, peterz@...radead.org, mchehab+samsung@...nel.org,
        changbin.du@...el.com, namit@...are.com, bigeasy@...utronix.de,
        yang.shi@...ux.alibaba.com, asteinhauser@...gle.com,
        anshuman.khandual@....com, jan.kiszka@...mens.com,
        akpm@...ux-foundation.org, steven.price@....com,
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        jgross@...e.com, andrew.cooper3@...rix.com,
        pawan.kumar.gupta@...ux.intel.com, fenghua.yu@...el.com,
        vineela.tummalapalli@...el.com, yamada.masahiro@...ionext.com,
        sam@...nborg.org, acme@...hat.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v3 1/3] arch/x86: Rename config
 X86_INTEL_MEMORY_PROTECTION_KEYS to generic x86



On 5/12/20 10:19 AM, Dave Hansen wrote:
> On 5/12/20 7:57 AM, Babu Moger wrote:
>>> I was hoping to see at least *some* justification in this changelog.  Do
>>> you think having "INTEL_" will confuse users?  Is there some technical
>>> merit to this change?
>>>
>>> The naming churn is an obviously bad, not technically necessary change.
>> Yes. Technically not necessary. But can cause some confusion on non-intel
>> platforms.
> 
> Seriously, guys, this is buried deep in kernel code.  Who is this confusing?
> 
> To me, this is like anything else we rename in the kernel.  It causes
> churn, which makes patches harder to backport for instance.  That's why
> we don't rename things willy-nilly when we just don't like the names.
> 
> The naming has to cause some practical, real-world problem that we *FIX*
> with the rename.
> 
> I'm just asking for a concrete, practical problem statement in the
> changelog.  If there isn't one, then please don't do the rename.  The
> Kconfig magic is still fine since it fixes a practical problem for end
> users.
> 

Alright. Alright. I will just keep Kconfig magic and update the
documentation(protection-keys.rst). Thanks