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

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Message-ID: <4d86b207-77af-dc5d-88a4-f092be0043f6@intel.com>
Date:   Wed, 6 May 2020 15:21:29 -0700
From:   Dave Hansen <dave.hansen@...el.com>
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Subject: Re: [PATCH 1/2] arch/x86: Rename config
 X86_INTEL_MEMORY_PROTECTION_KEYS to generic x86

> 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

I'm really just wondering what the point of the churn is.