Re: [PATCH v2] x86/Kconfig: Rename UMIP config parameter

[Borislav Petkov]

On Mon, Nov 04, 2019 at 08:50:51PM +0000, Moger, Babu wrote:
> AMD 2nd generation EPYC processors support the UMIP (User-Mode
> Instruction Prevention) feature. So, rename X86_INTEL_UMIP to
> generic X86_UMIP and modify the text to cover both Intel and AMD.
> 
> Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
> ---
> v2:
>   Learned that for the hardware that support UMIP, we dont need to
>   emulate. Removed the emulation related code and just submitting
>   the config changes.
> 
>  arch/x86/Kconfig                         |    8 ++++----
>  arch/x86/include/asm/disabled-features.h |    2 +-
>  arch/x86/include/asm/umip.h              |    4 ++--
>  arch/x86/kernel/Makefile                 |    2 +-
>  4 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index d6e1faa28c58..821b7cebff31 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1880,13 +1880,13 @@ config X86_SMAP
>  
>  	  If unsure, say Y.
>  
> -config X86_INTEL_UMIP
> +config X86_UMIP
>  	def_bool y
> -	depends on CPU_SUP_INTEL
> -	prompt "Intel User Mode Instruction Prevention" if EXPERT
> +	depends on X86 && (CPU_SUP_INTEL || CPU_SUP_AMD)
		   ^^^

What's the dependency on X86 for?

Aren't the CPU_SUP_* things enough?

-- 
Regards/Gruss,
    Boris.

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