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Date:   Tue, 19 Jan 2021 18:09:42 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Sean Christopherson <seanjc@google.com>
Cc:     Paolo Bonzini <pbonzini@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, x86@kernel.org,
        Andy Lutomirski <luto@kernel.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, Tom Lendacky <thomas.lendacky@amd.com>,
        Brijesh Singh <brijesh.singh@amd.com>
Subject: Re: [PATCH] x86/sev: Add AMD_SEV_ES_GUEST Kconfig for including
 SEV-ES support
Message-ID: <20210119170942.GO27433@zn.tnic>
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On Tue, Jan 19, 2021 at 08:23:20AM -0800, Sean Christopherson wrote:
> It was the AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT dependency that tripped me up.  To
> get KVM to enable SEV/SEV-ES by default,

By default? What would be the use case for that?

> Agreed, I'll send a KVM patch to remove the
> AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT dependency.

Yah, AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT came out of the initial memory
enc. SME patchset where the use case was something along the lines of
booting a kernel and SME being enabled by default. But Tom doesn't
remember exactly either. I guess that thing doesn't belong in kvm code
anyway...

-- 
Regards/Gruss,
    Boris.

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