Function svm_vmexit

freebsd/amd64/vmm/amd/svm.c:1322–1583

}

static int
svm_vmexit(struct svm_softc *svm_sc, int vcpu, struct vm_exit *vmexit)
{
	struct vmcb *vmcb;
	struct vmcb_state *state;
	struct vmcb_ctrl *ctrl;
	struct svm_regctx *ctx;
	uint64_t code, info1, info2, val;
	uint32_t eax, ecx, edx;
	int error, errcode_valid, handled, idtvec, reflect;
	bool retu;

	ctx = svm_get_guest_regctx(svm_sc, vcpu);
	vmcb = svm_get_vmcb(svm_sc, vcpu);
	state = &vmcb->state;
	ctrl = &vmcb->ctrl;

	handled = 0;
	code = ctrl->exitcode;
	info1 = ctrl->exitinfo1;
	info2 = ctrl->exitinfo2;

	vmexit->exitcode = VM_EXITCODE_BOGUS;
	vmexit->rip = state->rip;
	vmexit->inst_length = nrip_valid(code) ? ctrl->nrip - state->rip : 0;

	vmm_stat_incr(svm_sc->vm, vcpu, VMEXIT_COUNT, 1);

	/*
	 * #VMEXIT(INVALID) needs to be handled early because the VMCB is
	 * in an inconsistent state and can trigger assertions that would
	 * never happen otherwise.
	 */
	if (code == VMCB_EXIT_INVALID) {
		vm_exit_svm(vmexit, code, info1, info2);
		return (0);
	}

	KASSERT((ctrl->eventinj & VMCB_EVENTINJ_VALID) == 0, ("%s: event "
	    "injection valid bit is set %#lx", __func__, ctrl->eventinj));

	KASSERT(vmexit->inst_length >= 0 && vmexit->inst_length <= 15,
	    ("invalid inst_length %d: code (%#lx), info1 (%#lx), info2 (%#lx)",
	    vmexit->inst_length, code, info1, info2));

	svm_update_virqinfo(svm_sc, vcpu);
	svm_save_intinfo(svm_sc, vcpu);

	switch (code) {
	case VMCB_EXIT_IRET:
		/*
		 * Restart execution at "iret" but with the intercept cleared.
		 */
		vmexit->inst_length = 0;
		clear_nmi_blocking(svm_sc, vcpu);
		handled = 1;
		break;
	case VMCB_EXIT_VINTR:	/* interrupt window exiting */