linux-kernel - [RFC PATCH 25/73] KVM: x86/PVM: Implement APIC emulation related callbacks

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Date: Mon, 26 Feb 2024 22:35:42 +0800
From: Lai Jiangshan <jiangshanlai@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Lai Jiangshan <jiangshan.ljs@...group.com>,
	Hou Wenlong <houwenlong.hwl@...group.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Sean Christopherson <seanjc@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Ingo Molnar <mingo@...hat.com>,
	kvm@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	x86@...nel.org,
	Kees Cook <keescook@...omium.org>,
	Juergen Gross <jgross@...e.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [RFC PATCH 25/73] KVM: x86/PVM: Implement APIC emulation related callbacks

From: Lai Jiangshan <jiangshan.ljs@...group.com>

For PVM, APIC virtualization for the guest is supported by reusing APIC
emulation.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@...group.com>
Signed-off-by: Hou Wenlong <houwenlong.hwl@...group.com>
---
 arch/x86/kvm/pvm/pvm.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/x86/kvm/pvm/pvm.c b/arch/x86/kvm/pvm/pvm.c
index 3735baee1d5f..ce047d211657 100644
--- a/arch/x86/kvm/pvm/pvm.c
+++ b/arch/x86/kvm/pvm/pvm.c
@@ -566,6 +566,25 @@ static int pvm_get_cpl(struct kvm_vcpu *vcpu)
 	return 3;
 }
 
+static void pvm_deliver_interrupt(struct kvm_lapic *apic, int delivery_mode,
+				  int trig_mode, int vector)
+{
+	struct kvm_vcpu *vcpu = apic->vcpu;
+
+	kvm_lapic_set_irr(vector, apic);
+	kvm_make_request(KVM_REQ_EVENT, vcpu);
+	kvm_vcpu_kick(vcpu);
+}
+
+static void pvm_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
+{
+}
+
+static bool pvm_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
+{
+	return false;
+}
+
 static void pvm_setup_mce(struct kvm_vcpu *vcpu)
 {
 }
@@ -1083,19 +1102,25 @@ static struct kvm_x86_ops pvm_x86_ops __initdata = {
 	.vcpu_pre_run = pvm_vcpu_pre_run,
 	.vcpu_run = pvm_vcpu_run,
 	.handle_exit = pvm_handle_exit,
+	.refresh_apicv_exec_ctrl = pvm_refresh_apicv_exec_ctrl,
+	.deliver_interrupt = pvm_deliver_interrupt,
 
 	.vcpu_after_set_cpuid = pvm_vcpu_after_set_cpuid,
 
 	.handle_exit_irqoff = pvm_handle_exit_irqoff,
 
+	.request_immediate_exit = __kvm_request_immediate_exit,
+
 	.sched_in = pvm_sched_in,
 
 	.nested_ops = &pvm_nested_ops,
 
 	.setup_mce = pvm_setup_mce,
 
+	.apic_init_signal_blocked = pvm_apic_init_signal_blocked,
 	.msr_filter_changed = pvm_msr_filter_changed,
 	.complete_emulated_msr = kvm_complete_insn_gp,
+	.vcpu_deliver_sipi_vector = kvm_vcpu_deliver_sipi_vector,
 };
 
 static struct kvm_x86_init_ops pvm_init_ops __initdata = {
-- 
2.19.1.6.gb485710b