linux-kernel - [PATCH v19 123/130] KVM: TDX: Ignore setting up mce

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Message-Id: <52df2fcce3f44911ee736f0abfc62c1ab05c8620.1708933498.git.isaku.yamahata@intel.com>
Date: Mon, 26 Feb 2024 00:27:05 -0800
From: isaku.yamahata@...el.com
To: kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: isaku.yamahata@...el.com,
	isaku.yamahata@...il.com,
	Paolo Bonzini <pbonzini@...hat.com>,
	erdemaktas@...gle.com,
	Sean Christopherson <seanjc@...gle.com>,
	Sagi Shahar <sagis@...gle.com>,
	Kai Huang <kai.huang@...el.com>,
	chen.bo@...el.com,
	hang.yuan@...el.com,
	tina.zhang@...el.com
Subject: [PATCH v19 123/130] KVM: TDX: Ignore setting up mce

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

Because vmx_set_mce function is VMX specific and it cannot be used for TDX.
Add vt stub to ignore setting up mce for TDX.

Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
---
 arch/x86/kvm/vmx/main.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c
index 9fcd71999bba..7c47b02d88d8 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -899,6 +899,14 @@ static void vt_cancel_hv_timer(struct kvm_vcpu *vcpu)
 }
 #endif
 
+static void vt_setup_mce(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu))
+		return;
+
+	vmx_setup_mce(vcpu);
+}
+
 static int vt_mem_enc_ioctl(struct kvm *kvm, void __user *argp)
 {
 	if (!is_td(kvm))
@@ -1085,7 +1093,7 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.cancel_hv_timer = vt_cancel_hv_timer,
 #endif
 
-	.setup_mce = vmx_setup_mce,
+	.setup_mce = vt_setup_mce,
 
 #ifdef CONFIG_KVM_SMM
 	.smi_allowed = vt_smi_allowed,
-- 
2.25.1