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

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Message-Id: <2f265006e5cee03a5a48448c51c3632391e58ec7.1625186503.git.isaku.yamahata@intel.com>
Date:   Fri,  2 Jul 2021 15:04:07 -0700
From:   isaku.yamahata@...el.com
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, erdemaktas@...gle.com,
        Connor Kuehl <ckuehl@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     isaku.yamahata@...el.com, isaku.yamahata@...il.com
Subject: [RFC PATCH v2 01/69] KVM: TDX: introduce config for KVM TDX support

From: Isaku Yamahata <isaku.yamahata@...el.com>

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@...el.com>
---
 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