linux-kernel - [PATCH v18 082/121] KVM: TDX: Implements vcpu request_immediate

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Message-Id: <e675c1a2755f0db31ff4e5affe5dde840c97077a.1705965635.git.isaku.yamahata@intel.com>
Date: Mon, 22 Jan 2024 15:53:58 -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 v18 082/121] KVM: TDX: Implements vcpu request_immediate_exit

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

Now we are able to inject interrupts into TDX vcpu, it's ready to block TDX
vcpu.  Wire up kvm x86 methods for blocking/unblocking vcpu for TDX.  To
unblock on pending events, request immediate exit methods is also needed.

Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
Reviewed-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/vmx/main.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c
index 619c5da771ee..aef78aa393ad 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -385,6 +385,16 @@ static void vt_enable_irq_window(struct kvm_vcpu *vcpu)
 	vmx_enable_irq_window(vcpu);
 }
 
+static void vt_request_immediate_exit(struct kvm_vcpu *vcpu)
+{
+	if (is_td_vcpu(vcpu)) {
+		__kvm_request_immediate_exit(vcpu);
+		return;
+	}
+
+	vmx_request_immediate_exit(vcpu);
+}
+
 static u8 vt_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
 {
 	if (is_td_vcpu(vcpu))
@@ -531,7 +541,7 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 	.check_intercept = vmx_check_intercept,
 	.handle_exit_irqoff = vmx_handle_exit_irqoff,
 
-	.request_immediate_exit = vmx_request_immediate_exit,
+	.request_immediate_exit = vt_request_immediate_exit,
 
 	.sched_in = vt_sched_in,
 
-- 
2.25.1