int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
		    int reason, bool has_error_code, u32 error_code)
{
	struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
	int ret;

	init_emulate_ctxt(vcpu);

	ret = emulator_task_switch(ctxt, tss_selector, idt_index, reason,
				   has_error_code, error_code);

	if (ret)
		return EMULATE_FAIL;

	memcpy(vcpu->arch.regs, ctxt->regs, sizeof ctxt->regs);
	kvm_rip_write(vcpu, ctxt->eip);
	kvm_set_rflags(vcpu, ctxt->eflags);
	kvm_make_request(KVM_REQ_EVENT, vcpu);
	return EMULATE_DONE;
}
int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
		    int reason, bool has_error_code, u32 error_code)
{
	struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
	int ret;

	init_emulate_ctxt(vcpu);

	ret = emulator_task_switch(ctxt, tss_selector, idt_index, reason,
				   has_error_code, error_code);

	if (ret)
		return EMULATE_FAIL;

	memcpy(vcpu->arch.regs, ctxt->regs, sizeof ctxt->regs);
	kvm_rip_write(vcpu, ctxt->eip);
	kvm_set_rflags(vcpu, ctxt->eflags);
	kvm_make_request(KVM_REQ_EVENT, vcpu);
	return EMULATE_DONE;
}