linux-kernel - [PATCH 3/5] x86/kvm/Kconfig: Have KVM_AMD_SEV select ARCH_HAS_CC

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Date: Wed, 27 Mar 2024 16:43:15 +0100
From: Borislav Petkov <bp@...en8.de>
To: X86 ML <x86@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	KVM <kvm@...r.kernel.org>,
	Ashish Kalra <ashish.kalra@....com>,
	Joerg Roedel <joro@...tes.org>,
	Michael Roth <michael.roth@....com>,
	Tom Lendacky <thomas.lendacky@....com>
Subject: [PATCH 3/5] x86/kvm/Kconfig: Have KVM_AMD_SEV select ARCH_HAS_CC_PLATFORM

From: "Borislav Petkov (AMD)" <bp@...en8.de>

The functionality to load SEV-SNP guests by the host will soon rely on
cc_platform* helpers because the cpu_feature* API with the early
patching is insufficient when SNP support needs to be disabled late.

Therefore, pull that functionality in.

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
---
 arch/x86/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 3aaf7e86a859..0ebdd088f28b 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -122,6 +122,7 @@ config KVM_AMD_SEV
 	default y
 	depends on KVM_AMD && X86_64
 	depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
+	select ARCH_HAS_CC_PLATFORM
 	help
 	  Provides support for launching Encrypted VMs (SEV) and Encrypted VMs
 	  with Encrypted State (SEV-ES) on AMD processors.
-- 
2.43.0