https://bugs.gentoo.org/389953

--- vboxpci/linux/VBoxPci-linux.c
+++ vboxpci/linux/VBoxPci-linux.c
@@ -33,14 +33,22 @@
 #include "VBoxPciInternal.h"
 
 #ifdef VBOX_WITH_IOMMU
-#include <linux/dmar.h>
-#include <linux/intel-iommu.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)
-# include <asm/amd_iommu.h>
-#else
-# include <linux/amd-iommu.h>
-#endif
-#endif
+# include <linux/dmar.h> 
+# include <linux/intel-iommu.h> 
+# include <linux/pci.h> 
+# if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0) 
+#  include <asm/amd_iommu.h> 
+# else 
+#  include <linux/amd-iommu.h> 
+# endif 
+# if LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0) 
+#  define IOMMU_PRESENT()      iommu_found() 
+#  define IOMMU_DOMAIN_ALLOC() iommu_domain_alloc() 
+# else 
+#  define IOMMU_PRESENT()      iommu_present(&pci_bus_type) 
+#  define IOMMU_DOMAIN_ALLOC() iommu_domain_alloc(&pci_bus_type) 
+# endif 
+#endif /* VBOX_WITH_IOMMU */ 
 
 
 /*******************************************************************************
@@ -146,7 +154,7 @@
 #endif
 
 #ifdef VBOX_WITH_IOMMU
-    if (iommu_found())
+    if (IOMMU_PRESENT())
         printk(KERN_INFO "vboxpci: IOMMU found\n");
     else
         printk(KERN_INFO "vboxpci: IOMMU not found (not registered)\n");
@@ -984,9 +992,9 @@
     printk(KERN_DEBUG "vboxPciOsInitVm: %p\n", pThis);
 #endif
 #ifdef VBOX_WITH_IOMMU
-    if (iommu_found())
+    if (IOMMU_PRESENT())
     {
-        pThis->pIommuDomain = iommu_domain_alloc();
+        pThis->pIommuDomain = IOMMU_DOMAIN_ALLOC();
         if (!pThis->pIommuDomain)
         {
             printk(KERN_DEBUG "cannot allocate IOMMU domain\n");