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

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Message-ID: <c3d9ad69-4a49-19de-1680-84f7d5afeb81@zhaoxin.com>
Date:   Thu, 5 Mar 2020 11:40:02 +0800
From:   Tony W Wang-oc <TonyWWang-oc@...oxin.com>
To:     Sean Christopherson <sean.j.christopherson@...el.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 05/03/2020 01:13, Sean Christopherson wrote:
> 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...

Sorry for this. Some Centaur family 7 CPUs also support the UMIP
feature, so will resend this patch as a patch series.

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