- iova_mode = phys_addrs ? RTE_IOVA_PA : RTE_IOVA_VA;
- RTE_LOG(DEBUG, EAL,
- "Buses did not request a specific IOVA mode, using '%s' based on physical addresses availability.\n",
- phys_addrs ? "PA" : "VA");
+ RTE_LOG(DEBUG, EAL, "Buses did not request a specific IOVA mode.\n");
+
+ if (!phys_addrs) {
+ /* if we have no access to physical addresses,
+ * pick IOVA as VA mode.
+ */
+ iova_mode = RTE_IOVA_VA;
+ RTE_LOG(DEBUG, EAL, "Physical addresses are unavailable, selecting IOVA as VA mode.\n");
+ } else if (is_iommu_enabled()) {
+ /* we have an IOMMU, pick IOVA as VA mode */
+ iova_mode = RTE_IOVA_VA;
+ RTE_LOG(DEBUG, EAL, "IOMMU is available, selecting IOVA as VA mode.\n");
+ } else {
+ /* physical addresses available, and no IOMMU
+ * found, so pick IOVA as PA.
+ */
+ iova_mode = RTE_IOVA_PA;
+ RTE_LOG(DEBUG, EAL, "IOMMU is not available, selecting IOVA as PA mode.\n");
+ }