diff --git a/arch/x86/configs/lakitu_defconfig b/arch/x86/configs/lakitu_defconfig
index bf99ba2..3f37704 100644
--- a/arch/x86/configs/lakitu_defconfig
+++ b/arch/x86/configs/lakitu_defconfig
@@ -2791,7 +2791,24 @@
 CONFIG_MAILBOX=y
 CONFIG_PCC=y
 # CONFIG_ALTERA_MBOX is not set
-# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_IOMMU_API=y
+CONFIG_IOMMU_SUPPORT=y
+
+#
+# Generic IOMMU Pagetable Support
+#
+# end of Generic IOMMU Pagetable Support
+
+# CONFIG_IOMMU_DEBUGFS is not set
+# CONFIG_IOMMU_DEFAULT_DMA_STRICT is not set
+CONFIG_IOMMU_DEFAULT_DMA_LAZY=y
+# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
+# CONFIG_AMD_IOMMU is not set
+CONFIG_DMAR_TABLE=y
+# CONFIG_INTEL_IOMMU is not set
+CONFIG_IRQ_REMAP=y
+CONFIG_HYPERV_IOMMU=y
+# CONFIG_VIRTIO_IOMMU is not set
 
 #
 # Remoteproc drivers