linux-kernel - [PATCH v16 107/116] KVM: TDX: Ignore setting up mce

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Message-Id: <2f26eae805dea844d5ba513e2c1bb9b9a7c6554b.1697471314.git.isaku.yamahata@intel.com>
Date:   Mon, 16 Oct 2023 09:14:59 -0700
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>,
        David Matlack <dmatlack@...gle.com>,
        Kai Huang <kai.huang@...el.com>,
        Zhi Wang <zhi.wang.linux@...il.com>, chen.bo@...el.com,
        hang.yuan@...el.com, tina.zhang@...el.com
Subject: [PATCH v16 107/116] 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 d5ee4069f684..df84a12aa232 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -908,6 +908,14 @@ 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))
@@ -1063,7 +1071,7 @@ 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