linux-kernel - [PATCH v13 078/113] KVM: TDX: Implements vcpu request_immediate

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Message-Id: <6828ee177dca50ba8287da89c3dd1c8a61fcb2b3.1678643052.git.isaku.yamahata@intel.com>
Date:   Sun, 12 Mar 2023 10:56:42 -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>
Subject: [PATCH v13 078/113] 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 b3c2be3e78ef..a54b97203e5c 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -382,6 +382,16 @@ 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))
@@ -529,7 +539,7 @@ 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