Function vmx_exit_process

freebsd/amd64/vmm/intel/vmx.c:2327–2821

}

static int
vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
{
	int error, errcode, errcode_valid, handled, in;
	struct vmxctx *vmxctx;
	struct vlapic *vlapic;
	struct vm_inout_str *vis;
	struct vm_task_switch *ts;
	uint32_t eax, ecx, edx, idtvec_info, idtvec_err, intr_info, inst_info;
	uint32_t intr_type, intr_vec, reason;
	uint64_t exitintinfo, qual, gpa;
	bool retu;

	CTASSERT((PINBASED_CTLS_ONE_SETTING & PINBASED_VIRTUAL_NMI) != 0);
	CTASSERT((PINBASED_CTLS_ONE_SETTING & PINBASED_NMI_EXITING) != 0);

	handled = UNHANDLED;
	vmxctx = &vmx->ctx[vcpu];

	qual = vmexit->u.vmx.exit_qualification;
	reason = vmexit->u.vmx.exit_reason;
	vmexit->exitcode = VM_EXITCODE_BOGUS;

	vmm_stat_incr(vmx->vm, vcpu, VMEXIT_COUNT, 1);
	SDT_PROBE3(vmm, vmx, exit, entry, vmx, vcpu, vmexit);

	/*
	 * VM-entry failures during or after loading guest state.
	 *
	 * These VM-exits are uncommon but must be handled specially
	 * as most VM-exit fields are not populated as usual.
	 */
	if (__predict_false(reason == EXIT_REASON_MCE_DURING_ENTRY)) {
		VCPU_CTR0(vmx->vm, vcpu, "Handling MCE during VM-entry");
		__asm __volatile("int $18");
		return (1);
	}

	/*
	 * VM exits that can be triggered during event delivery need to
	 * be handled specially by re-injecting the event if the IDT
	 * vectoring information field's valid bit is set.
	 *
	 * See "Information for VM Exits During Event Delivery" in Intel SDM
	 * for details.
	 */
	idtvec_info = vmcs_idt_vectoring_info();
	if (idtvec_info & VMCS_IDT_VEC_VALID) {
		idtvec_info &= ~(1 << 12); /* clear undefined bit */
		exitintinfo = idtvec_info;
		if (idtvec_info & VMCS_IDT_VEC_ERRCODE_VALID) {
			idtvec_err = vmcs_idt_vectoring_err();
			exitintinfo |= (uint64_t)idtvec_err << 32;
		}
		error = vm_exit_intinfo(vmx->vm, vcpu, exitintinfo);
		KASSERT(error == 0, ("%s: vm_set_intinfo error %d",
		    __func__, error));