linux-kernel - Re: [PATCH 1/2] arch/x86: Rename config X86_INTEL_MEMORY_PROTECTION

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Date:   Wed, 6 May 2020 16:36:05 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Dave Hansen <dave.hansen@...el.com>,
        Babu Moger <babu.moger@....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,
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        anshuman.khandual@....com, jan.kiszka@...mens.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 1/2] arch/x86: Rename config
 X86_INTEL_MEMORY_PROTECTION_KEYS to generic x86



On 2020-05-06 4:21 p.m., Dave Hansen wrote:
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index 1197b5596d5a..8630b9fa06f5 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -1886,11 +1886,11 @@ config X86_UMIP
>>  	  specific cases in protected and virtual-8086 modes. Emulated
>>  	  results are dummy.
>>  
>> -config X86_INTEL_MEMORY_PROTECTION_KEYS
>> -	prompt "Intel Memory Protection Keys"
>> +config X86_MEMORY_PROTECTION_KEYS
>> +	prompt "Memory Protection Keys"
>>  	def_bool y
>>  	# Note: only available in 64-bit mode
>> -	depends on CPU_SUP_INTEL && X86_64
>> +	depends on X86_64 && (CPU_SUP_INTEL || CPU_SUP_AMD)
>>  	select ARCH_USES_HIGH_VMA_FLAGS
>>  	select ARCH_HAS_PKEYS
>>  	---help---
> 
> It's a bit of a bummer that we're going to prompt everybody doing
> oldconfig's for this new option.  But, I don't know any way for Kconfig
> to suppress it if the name is changed.  Also, I guess the def_bool=y
> means that menuconfig and olddefconfig will tend to do the right thing.
> 
> Do we *really* need to change the Kconfig name?  The text prompt, sure.
>  End users see that and having Intel in there is massively confusing.
> 
> If I have to put up with seeing 'amd64' all over my Debian package
> names, you can put up with a Kconfig name. :P

Lol, isn't that just Intel's penance for Itanium?

Logan