[RFC PATCH v2 01/69] KVM: TDX: introduce config for KVM TDX support

[isaku . yamahata]

From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>

Add new config KVM_INTEL_TDX for KVM TDX support.  This patch introduce
a config only.  Later patch will implement feature depends on it.

Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
---
 arch/x86/kvm/Kconfig | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index f6b93a35ce14..66622901bf7d 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -96,6 +96,17 @@ config X86_SGX_KVM
 
 	  If unsure, say N.
 
+config KVM_INTEL_TDX
+	bool "Trusted Domain eXtensions(TDX) Host support"
+	depends on KVM_INTEL && X86_64
+	select FW_LOADER
+
+	help
+	  Extends KVM on Intel processors to support Trusted Domain Extensions.
+	  Intel Trust Domain eXtensions(TDX) is an architecture based on CPU
+	  instructions and TDX module to deploy hardware-isolated virtual
+	  machines(VMs) which is called Trust Domains(TDs).
+
 config KVM_AMD
 	tristate "KVM for AMD processors support"
 	depends on KVM
-- 
2.25.1