linux-kernel - Re: [PATCH v2] x86/kvm/Kconfig: Ensure CRYPTO_DEV_CCP_DD state at minimum matches KVM

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Date:   Sun, 15 Jul 2018 17:36:34 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Brijesh Singh <brijesh.singh@....com>,
        Janakarajan Natarajan <Janakarajan.Natarajan@....com>,
        x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Radim Krcmar <rkrcmar@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH v2] x86/kvm/Kconfig: Ensure CRYPTO_DEV_CCP_DD state at
 minimum matches KVM_AMD

On 02/07/2018 18:34, Brijesh Singh wrote:
> 
> 
> On 06/27/2018 11:30 AM, Janakarajan Natarajan wrote:
>> Prevent a config where KVM_AMD=y and CRYPTO_DEV_CCP_DD=m thereby ensuring
>> that AMD Secure Processor device driver will be built-in when KVM_AMD is
>> also built-in.
>>
>> v1->v2:
>> * Removed usage of 'imply' Kconfig option.
>> * Change patch commit message.
>>
>> Fixes: 505c9e94d832 ("KVM: x86: prefer "depends on" to "select" for SEV")
>>
>> Cc: <stable@...r.kernel.org> # 4.16.x
>> Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@....com>
>> ---
> 
> Reviewed-by: Brijesh Singh <brijesh.singh@....com>
> 
> 
>>   arch/x86/kvm/Kconfig | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
>> index 92fd433..1bbec38 100644
>> --- a/arch/x86/kvm/Kconfig
>> +++ b/arch/x86/kvm/Kconfig
>> @@ -85,7 +85,7 @@ config KVM_AMD_SEV
>>       def_bool y
>>       bool "AMD Secure Encrypted Virtualization (SEV) support"
>>       depends on KVM_AMD && X86_64
>> -    depends on CRYPTO_DEV_CCP && CRYPTO_DEV_CCP_DD && CRYPTO_DEV_SP_PSP
>> +    depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
>>       ---help---
>>       Provides support for launching Encrypted VMs on AMD processors.
>>  

Queued, thanks.

Paolo