On Mon, Oct 16, 2023 at 08:27:49AM -0500, Michael Roth wrote:
> SEV-SNP relies on the restricted/protected memory support to run guests,
> so make sure to enable that support with the
> CONFIG_KVM_SW_PROTECTED_VM build option.
>
> Signed-off-by: Michael Roth <michael.roth@xxxxxxx>
> ---
> arch/x86/kvm/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
> index 8452ed0228cb..71dc506aa3fb 100644
> --- a/arch/x86/kvm/Kconfig
> +++ b/arch/x86/kvm/Kconfig
> @@ -126,6 +126,7 @@ config KVM_AMD_SEV
> bool "AMD Secure Encrypted Virtualization (SEV) support"
> depends on KVM_AMD && X86_64
> depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
> + select KVM_SW_PROTECTED_VM
> help
> Provides support for launching Encrypted VMs (SEV) and Encrypted VMs
> with Encrypted State (SEV-ES) on AMD processors.
> --
Kconfig doesn't like this one:
WARNING: unmet direct dependencies detected for KVM_SW_PROTECTED_VM
Depends on [n]: VIRTUALIZATION [=y] && EXPERT [=n] && X86_64 [=y]
Selected by [m]:
- KVM_AMD_SEV [=y] && VIRTUALIZATION [=y] && KVM_AMD [=m] && X86_64 [=y] && CRYPTO_DEV_SP_PSP [=y] && (KVM_AMD [=m]!=y || CRYPTO_DEV_CCP_DD [=m]!=m)
WARNING: unmet direct dependencies detected for KVM_SW_PROTECTED_VM
Depends on [n]: VIRTUALIZATION [=y] && EXPERT [=n] && X86_64 [=y]
Selected by [m]:
- KVM_AMD_SEV [=y] && VIRTUALIZATION [=y] && KVM_AMD [=m] && X86_64 [=y] && CRYPTO_DEV_SP_PSP [=y] && (KVM_AMD [=m]!=y || CRYPTO_DEV_CCP_DD [=m]!=m)
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
