Re: [PATCH] x86/sev: Add AMD_SEV_ES_GUEST Kconfig for including SEV-ES support

From: Borislav Petkov
Date: Tue Jan 19 2021 - 12:12:30 EST


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.

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