1 files changed, 21 insertions, 3 deletions

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index d9a9da597e79..a69cc0f52042 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -801,6 +801,21 @@ static int __init init_memory_definitions(struct acpi_table_header *table)
 }
 
 /*
+ * Init the device table to not allow DMA access for devices and
+ * suppress all page faults
+ */
+static void init_device_table(void)
+{
+        u16 devid;
+
+        for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) {
+                set_dev_entry_bit(devid, DEV_ENTRY_VALID);
+                set_dev_entry_bit(devid, DEV_ENTRY_TRANSLATION);
+                set_dev_entry_bit(devid, DEV_ENTRY_NO_PAGE_FAULT);
+        }
+}
+
+/*
  * This function finally enables all IOMMUs found in the system after
  * they have been initialized
  */
@@ -931,6 +946,9 @@ int __init amd_iommu_init(void)
         if (amd_iommu_pd_alloc_bitmap == NULL)
                 goto free;
 
+        /* init the device table */
+        init_device_table();
+
         /*
          * let all alias entries point to itself
          */
@@ -954,15 +972,15 @@ int __init amd_iommu_init(void)
         if (acpi_table_parse("IVRS", init_memory_definitions) != 0)
                 goto free;
 
-        ret = amd_iommu_init_dma_ops();
+        ret = sysdev_class_register(&amd_iommu_sysdev_class);
         if (ret)
                 goto free;
 
-        ret = sysdev_class_register(&amd_iommu_sysdev_class);
+        ret = sysdev_register(&device_amd_iommu);
         if (ret)
                 goto free;
 
-        ret = sysdev_register(&device_amd_iommu);
+        ret = amd_iommu_init_dma_ops();
         if (ret)
                 goto free;