kvm: x86: Modify kvm_x86_ops.get_enable_apicv() to use struct kvm parameter

Generally, APICv for all vcpus in the VM are enable/disable in the same
manner. So, get_enable_apicv() should represent APICv status of the VM
instead of each VCPU.

Modify kvm_x86_ops.get_enable_apicv() to take struct kvm as parameter
instead of struct kvm_vcpu.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -1081,7 +1081,7 @@ struct kvm_x86_ops {
 	void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
 	void (*enable_irq_window)(struct kvm_vcpu *vcpu);
 	void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
-	bool (*get_enable_apicv)(struct kvm_vcpu *vcpu);
+	bool (*get_enable_apicv)(struct kvm *kvm);
 	void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
 	void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
 	void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, int isr);

arch/x86/kvm/svm.c

@@ -5112,9 +5112,9 @@ static void svm_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
 	return;
 }
 
-static bool svm_get_enable_apicv(struct kvm_vcpu *vcpu)
+static bool svm_get_enable_apicv(struct kvm *kvm)
 {
-	return avic && irqchip_split(vcpu->kvm);
+	return avic && irqchip_split(kvm);
 }
 
 static void svm_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)

arch/x86/kvm/vmx/vmx.c

@@ -3757,7 +3757,7 @@ void pt_update_intercept_for_msr(struct vcpu_vmx *vmx)
 	}
 }
 
-static bool vmx_get_enable_apicv(struct kvm_vcpu *vcpu)
+static bool vmx_get_enable_apicv(struct kvm *kvm)
 {
 	return enable_apicv;
 }

arch/x86/kvm/x86.c

@@ -9340,7 +9340,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 		goto fail_free_pio_data;
 
 	if (irqchip_in_kernel(vcpu->kvm)) {
-		vcpu->arch.apicv_active = kvm_x86_ops->get_enable_apicv(vcpu);
+		vcpu->arch.apicv_active = kvm_x86_ops->get_enable_apicv(vcpu->kvm);
 		r = kvm_create_lapic(vcpu, lapic_timer_advance_ns);
 		if (r < 0)
 			goto fail_mmu_destroy;