linux-kernel - Re: [PATCH] x86/Kconfig: Make X86

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Date:   Wed, 4 Mar 2020 09:13:36 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Tony W Wang-oc <TonyWWang-oc@...oxin.com>
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        DavidWang@...oxin.com, CooperYan@...oxin.com,
        QiyuanWang@...oxin.com, HerryYang@...oxin.com
Subject: Re: [PATCH] x86/Kconfig: Make X86_UMIP to cover Zhaoxin CPUs too

On Wed, Mar 04, 2020 at 10:18:05AM +0800, Tony W Wang-oc wrote:
> New Zhaoxin family 7 CPUs support the UMIP (User-Mode Instruction
> Prevention) feature. So, modify X86_UMIP depends on Zhaoxin CPUs too.
> 
> Signed-off-by: Tony W Wang-oc <TonyWWang-oc@...oxin.com>
> ---
>  arch/x86/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 16a4b39..ca4beb8 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1877,7 +1877,7 @@ config X86_SMAP
>  
>  config X86_UMIP
>  	def_bool y
> -	depends on CPU_SUP_INTEL || CPU_SUP_AMD
> +	depends on CPU_SUP_INTEL || CPU_SUP_AMD || CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN

The changelog only mentions Zhaoxin, but this also adds Centaur...

>  	prompt "User Mode Instruction Prevention" if EXPERT
>  	---help---
>  	  User Mode Instruction Prevention (UMIP) is a security feature in
> -- 
> 2.7.4
>