linux-kernel - [PATCH v11 079/113] KVM: TDX: Implements vcpu request_immediate

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Message-Id: <6b50d1e7b8555d3f6baf6b41e2c2e25caccf835f.1673539699.git.isaku.yamahata@intel.com>
Date:   Thu, 12 Jan 2023 08:32:27 -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>,
        David Matlack <dmatlack@...gle.com>
Subject: [PATCH v11 079/113] 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 | 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 d5a838e87fb5..7962f03e222d 100644
--- a/arch/x86/kvm/vmx/main.c
+++ b/arch/x86/kvm/vmx/main.c
@@ -307,6 +307,14 @@ 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))
+		return __kvm_request_immediate_exit(vcpu);
+
+	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))
@@ -443,7 +451,7 @@ 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