1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index f8a222b0ac3f..8a7f1971d633 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1381,7 +1381,7 @@ 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)
+static void init_device_table_dma(void)
 {
         u32 devid;
 
@@ -1391,6 +1391,17 @@ static void init_device_table(void)
         }
 }
 
+static void init_device_table(void)
+{
+        u32 devid;
+
+        if (!amd_iommu_irq_remap)
+                return;
+
+        for (devid = 0; devid <= amd_iommu_last_bdf; ++devid)
+                set_dev_entry_bit(devid, DEV_ENTRY_IRQ_TBL_EN);
+}
+
 static void iommu_init_flags(struct amd_iommu *iommu)
 {
         iommu->acpi_flags & IVHD_FLAG_HT_TUN_EN_MASK ?
@@ -1781,8 +1792,14 @@ static bool detect_ivrs(void)
 
 static int amd_iommu_init_dma(void)
 {
+        struct amd_iommu *iommu;
         int ret;
 
+        init_device_table_dma();
+
+        for_each_iommu(iommu)
+                iommu_flush_all_caches(iommu);
+
         if (iommu_pass_through)
                 ret = amd_iommu_init_passthrough();
         else