linux-kernel - Re: [PATCH v3 05/25] x86/sgx: Introduce virtual EPC for use by KVM guests

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Message-ID: <20210405090151.GA19485@zn.tnic>
Date:   Mon, 5 Apr 2021 11:01:51 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Kai Huang <kai.huang@...el.com>
Cc:     kvm@...r.kernel.org, x86@...nel.org, linux-sgx@...r.kernel.org,
        linux-kernel@...r.kernel.org, seanjc@...gle.com, jarkko@...nel.org,
        luto@...nel.org, dave.hansen@...el.com, rick.p.edgecombe@...el.com,
        haitao.huang@...el.com, pbonzini@...hat.com, tglx@...utronix.de,
        mingo@...hat.com, hpa@...or.com
Subject: Re: [PATCH v3 05/25] x86/sgx: Introduce virtual EPC for use by KVM
 guests

On Fri, Mar 19, 2021 at 08:22:21PM +1300, Kai Huang wrote:
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 35391e94bd22..007912f67a06 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1942,6 +1942,18 @@ config X86_SGX
>  
>  	  If unsure, say N.
>  
> +config X86_SGX_KVM
> +	bool "Software Guard eXtensions (SGX) Virtualization"
> +	depends on X86_SGX && KVM_INTEL
> +	help

It seems to me this would fit better under "Virtualization" because even
if I want to enable it, I have to go enable KVM_INTEL first and then
return back here to turn it on too.

And under "Virtualization" is where we enable all kinds of aspects which
belong to it.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette