+ if (amd_iommu_irq_remap)
+ amd_iommu_irq_remap = check_ioapic_information();
+
+ if (amd_iommu_irq_remap) {
+ /*
+ * Interrupt remapping enabled, create kmem_cache for the
+ * remapping tables.
+ */
+ amd_iommu_irq_cache = kmem_cache_create("irq_remap_cache",
+ MAX_IRQS_PER_TABLE * sizeof(u32),
+ IRQ_TABLE_ALIGNMENT,
+ 0, NULL);
+ if (!amd_iommu_irq_cache)
+ goto out;
+
+ irq_lookup_table = (void *)__get_free_pages(
+ GFP_KERNEL | __GFP_ZERO,
+ get_order(rlookup_table_size));
+ if (!irq_lookup_table)
+ goto out;
+ }
+