kvm: x86: svm: Add support to (de)activate posted interrupts (8937d762) · Commits · 戴 / test

arch/x86/kvm/svm.c

+36 −1

Original line number	Diff line number	Diff line
		@@ -5155,17 +5155,52 @@ static void svm_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
		{
		}

		static int svm_set_pi_irte_mode(struct kvm_vcpu *vcpu, bool activate)
		{
		int ret = 0;
		unsigned long flags;
		struct amd_svm_iommu_ir *ir;
		struct vcpu_svm *svm = to_svm(vcpu);

		if (!kvm_arch_has_assigned_device(vcpu->kvm))
		return 0;

		/*
		* Here, we go through the per-vcpu ir_list to update all existing
		* interrupt remapping table entry targeting this vcpu.
		*/
		spin_lock_irqsave(&svm->ir_list_lock, flags);

		if (list_empty(&svm->ir_list))
		goto out;

		list_for_each_entry(ir, &svm->ir_list, node) {
		if (activate)
		ret = amd_iommu_activate_guest_mode(ir->data);
		else
		ret = amd_iommu_deactivate_guest_mode(ir->data);
		if (ret)
		break;
		}
		out:
		spin_unlock_irqrestore(&svm->ir_list_lock, flags);
		return ret;
		}

		/* Note: Currently only used by Hyper-V. */
		static void svm_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
		{
		struct vcpu_svm *svm = to_svm(vcpu);
		struct vmcb *vmcb = svm->vmcb;
		bool activated = kvm_vcpu_apicv_active(vcpu);

		if (kvm_vcpu_apicv_active(vcpu))
		if (activated)
		vmcb->control.int_ctl \|= AVIC_ENABLE_MASK;
		else
		vmcb->control.int_ctl &= ~AVIC_ENABLE_MASK;
		mark_dirty(vmcb, VMCB_AVIC);

		svm_set_pi_irte_mode(vcpu, activated);
		}

		static void svm_load_eoi_exitmap(struct kvm_vcpu vcpu, u64 eoi_exit_bitmap)