/* Only true if all IOMMUs support device IOTLBs */
extern bool amd_iommu_iotlb_sup;
+#define MAX_IRQS_PER_TABLE 256
+#define IRQ_TABLE_ALIGNMENT 128
+
+/* Interrupt remapping feature used? */
+extern bool amd_iommu_irq_remap;
+
+/* kmem_cache to get tables with 128 byte alignement */
+extern struct kmem_cache *amd_iommu_irq_cache;
+
/*
* Make iterating over all IOMMUs easier
*/